Merge remote-tracking branch 'upstream/main' into haryr/aug25-rebase

# Conflicts:
#	resources/profiles/Custom.json
#	src/libslic3r/Brim.cpp
#	src/libslic3r/GCode.cpp
#	src/libslic3r/GCode.hpp
#	src/libslic3r/Preset.cpp
#	src/slic3r/GUI/3DScene.cpp
#	src/slic3r/GUI/ConfigManipulation.cpp
#	src/slic3r/GUI/GLCanvas3D.cpp
#	src/slic3r/GUI/Plater.cpp

src/slic3r/CMakeLists.txt

@@ -622,6 +622,8 @@ set(SLIC3R_GUI_SOURCES
     plugin/host/PluginHostSlicing.cpp
     plugin/host/PluginHostUi.cpp
     plugin/host/PluginHostUi.hpp
+    plugin/host/PluginPages.cpp
+    plugin/host/PluginPages.hpp
     plugin/CloudPluginService.cpp
     plugin/CloudPluginService.hpp
     plugin/PluginFsUtils.cpp
@@ -642,6 +644,9 @@ set(SLIC3R_GUI_SOURCES
     plugin/pluginTypes/printerAgent/PrinterAgentPluginCapability.hpp
     plugin/pluginTypes/printerAgent/PrinterAgentPluginCapability.cpp
     plugin/pluginTypes/printerAgent/PrinterAgentPluginCapabilityTrampoline.hpp
+    plugin/pluginTypes/pages/PagesPluginCapability.hpp
+    plugin/pluginTypes/pages/PagesPluginCapability.cpp
+    plugin/pluginTypes/pages/PagesPluginCapabilityTrampoline.hpp
     plugin/pluginTypes/script/ScriptPluginCapability.hpp
     plugin/pluginTypes/script/ScriptPluginCapability.cpp
     plugin/pluginTypes/script/ScriptPluginCapabilityTrampoline.hpp

src/slic3r/Config/Snapshot.cpp

@@ -432,14 +432,9 @@ const Snapshot&	SnapshotDB::take_snapshot(const AppConfig &app_config, Snapshot:
                 cfg.models_variants_installed.erase(it ++);
             else
                 ++ it;
-        // Read the active config bundle, parse the config version.
-        PresetBundle bundle;
-        //BBS: change directoties by design
-        //bundle.load_configbundle((data_dir / PRESET_SYSTEM_DIR / (cfg.name + ".ini")).string(), PresetBundle::LoadConfigBundleAttribute::LoadVendorOnly, ForwardCompatibilitySubstitutionRule::EnableSilent);
-        bundle.load_vendor_configs_from_json((data_dir/PRESET_SYSTEM_DIR).string(), cfg.name, PresetBundle::LoadConfigBundleAttribute::LoadVendorOnly, ForwardCompatibilitySubstitutionRule::EnableSilent);
-        for (const auto &vp : bundle.vendors)
-            if (vp.second.id == cfg.name)
-                cfg.version.config_version = vp.second.config_version;
+        // Orca: the version the vendor is installed at, read from its profile or —
+        // where the cache is the whole installation — from the cache's own stamp.
+        cfg.version.config_version = installed_vendor_version(cfg.name);
         snapshot.vendor_configs.emplace_back(std::move(cfg));
     }
 

src/slic3r/GUI/3DScene.cpp

@@ -70,6 +70,9 @@ float FullTransparentModdifiedToFixAlpha = 0.3f;
 // value like 0.18f could not because in C++ (int)(0.18f * 255) == 45 however in OpenGL it renders this as 46
 // which breaks the `SelectMachineDialog::record_edge_pixels_data()` function!
 float FULL_BLACK_THRESHOLD = 0.2f;
+// Keep depth_tex away from texture unit 0 to avoid sampler-type aliasing with
+// shadow/environment samplers when realistic view is disabled.
+static constexpr int OUTLINE_DEPTH_TEX_UNIT = 5;
 
 Slic3r::ColorRGBA adjust_color_for_rendering(const Slic3r::ColorRGBA &colors)
 {
@@ -518,6 +521,37 @@ void GLVolume::render_with_outline(const GUI::Size& cnv_size)
     glsafe(::glStencilMask(0xFF));
     glsafe(::glDisable(GL_STENCIL_TEST));
     // render the outline using depth buffer and discard the pixels that are not on the outline
+    // The silhouette is resolved per sample in the shader (see DetectSilho in gouraud.fs/phong.fs).
+    // That needs the GL 3.2 entry points and a shader that declares depth_tex as sampler2DMS, which
+    // only the 140 ones do and only under GL_ARB_texture_multisample - so ask the compiled program
+    // rather than the GL version, or a sampler2D ends up bound to a multisample texture.
+    // Only the Arb branch below allocates a multisample texture, so keep the target consistent with it.
+    const bool  use_msaa_outline = framebuffers_type == GUI::OpenGLManager::EFramebufferType::Arb &&
+                                   GUI::wxGetApp().is_gl_version_greater_or_equal_to(3, 2) &&
+                                   shader->get_uniform_location("msaa_samples") >= 0;
+    const GLenum depth_tex_target = use_msaa_outline ? GL_TEXTURE_2D_MULTISAMPLE : GL_TEXTURE_2D;
+    // Keep the depth texture off image unit 0. The object shaders leave shadow_map (and
+    // environment_tex) at the default sampler value 0 whenever the shadow pass is skipped - which is
+    // the case with realistic view off - and GL forbids two sampler types referring to the same image
+    // unit. A sampler2DMS on unit 0 then makes every draw fail with INVALID_OPERATION on drivers that
+    // enforce it (Mesa), i.e. the model disappears entirely. Unit 5 is unused (shadow_map takes 4).
+    const int depth_tex_unit = OUTLINE_DEPTH_TEX_UNIT;
+    int aa_samples = 1;
+    if (use_msaa_outline) {
+        if (const AppConfig* app_config = GUI::wxGetApp().app_config; app_config != nullptr) {
+            const std::string value = app_config->get(SETTING_OPENGL_AA_SAMPLES);
+            if (value == "2" || value == "4" || value == "8" || value == "16")
+                aa_samples = ::atoi(value.c_str());
+        }
+        // Never request more samples than the driver supports for depth textures (a 1-sample texture
+        // is used when MSAA is disabled, keeping a single code path for the sampler2DMS shader).
+        GLint max_samples = 1;
+        glsafe(::glGetIntegerv(GL_MAX_DEPTH_TEXTURE_SAMPLES, &max_samples));
+        if (aa_samples > max_samples)
+            aa_samples = max_samples < 1 ? 1 : max_samples;
+        if (aa_samples < 1)
+            aa_samples = 1;
+    }
     // 1st. render pass, render the model into a separate render target that has only depth buffer
     GLuint depth_fbo   = 0;
     GLuint depth_tex = 0;
@@ -525,21 +559,26 @@ void GLVolume::render_with_outline(const GUI::Size& cnv_size)
         glsafe(::glGenFramebuffers(1, &depth_fbo));
         glsafe(::glBindFramebuffer(GL_FRAMEBUFFER, depth_fbo));
 
-        glActiveTexture(GL_TEXTURE0);
+        glsafe(::glActiveTexture(GL_TEXTURE0 + depth_tex_unit));
         glsafe(::glGenTextures(1, &depth_tex));
-        glsafe(::glBindTexture(GL_TEXTURE_2D, depth_tex));
-        glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
-        glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
-        glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
-        glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
-        glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT32F, cnv_size.get_width(), cnv_size.get_height(), 0, GL_DEPTH_COMPONENT, GL_FLOAT, nullptr));
+        glsafe(::glBindTexture(depth_tex_target, depth_tex));
+        if (use_msaa_outline) {
+            // Multisample textures do not take filter/wrap parameters.
+            glsafe(::glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, aa_samples, GL_DEPTH_COMPONENT32F, cnv_size.get_width(), cnv_size.get_height(), GL_TRUE));
+        } else {
+            glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
+            glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
+            glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
+            glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
+            glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT32F, cnv_size.get_width(), cnv_size.get_height(), 0, GL_DEPTH_COMPONENT, GL_FLOAT, nullptr));
+        }
 
-        glsafe(::glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depth_tex, 0));
+        glsafe(::glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, depth_tex_target, depth_tex, 0));
     } else {
         glsafe(::glGenFramebuffersEXT(1, &depth_fbo));
         glsafe(::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, depth_fbo));
 
-        glActiveTexture(GL_TEXTURE0);
+        glsafe(::glActiveTexture(GL_TEXTURE0 + depth_tex_unit));
         glsafe(::glGenTextures(1, &depth_tex));
         glsafe(::glBindTexture(GL_TEXTURE_2D, depth_tex));
         glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
@@ -550,12 +589,15 @@ void GLVolume::render_with_outline(const GUI::Size& cnv_size)
 
         glsafe(::glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_2D, depth_tex, 0));
     }
+    // Unbind before drawing: the texture is this framebuffer's depth attachment, so leaving it bound
+    // to a sampled unit would be a feedback loop.
+    glsafe(::glBindTexture(depth_tex_target, 0));
+    glsafe(::glActiveTexture(GL_TEXTURE0));
     glsafe(::glClear(GL_DEPTH_BUFFER_BIT));
     if (tverts_range == std::make_pair<size_t, size_t>(0, -1))
         model.render(shader);
     else
         model.render(this->tverts_range, shader);
-    glsafe(::glBindTexture(GL_TEXTURE_2D, 0));
 
     // 2nd. render pass, just a normal render with the depth buffer passed as a texture
     if (framebuffers_type == GUI::OpenGLManager::EFramebufferType::Arb) {
@@ -565,13 +607,17 @@ void GLVolume::render_with_outline(const GUI::Size& cnv_size)
     }
     shader->set_uniform("is_outline", true);
     shader->set_uniform("screen_size", Vec2f{cnv_size.get_width(), cnv_size.get_height()});
-    glActiveTexture(GL_TEXTURE0);
-    glsafe(::glBindTexture(GL_TEXTURE_2D, depth_tex));
-    shader->set_uniform("depth_tex", 0);
+    shader->set_uniform("msaa_samples", aa_samples);
+    glsafe(::glActiveTexture(GL_TEXTURE0 + depth_tex_unit));
+    glsafe(::glBindTexture(depth_tex_target, depth_tex));
+    glsafe(::glActiveTexture(GL_TEXTURE0));
+    shader->set_uniform("depth_tex", depth_tex_unit);
     simple_render(shader, model_objects, colors);
 
     // Some clean up to do
-    glsafe(::glBindTexture(GL_TEXTURE_2D, 0));
+    glsafe(::glActiveTexture(GL_TEXTURE0 + depth_tex_unit));
+    glsafe(::glBindTexture(depth_tex_target, 0));
+    glsafe(::glActiveTexture(GL_TEXTURE0));
     shader->set_uniform("is_outline", false);
     if (framebuffers_type == GUI::OpenGLManager::EFramebufferType::Arb) {
         glsafe(::glBindFramebuffer(GL_FRAMEBUFFER, 0));
@@ -1075,6 +1121,10 @@ void GLVolumeCollection::render(GLVolumeCollection::ERenderType       type,
 
     const float support_normal_z = get_selection_support_normal_z();
 
+    // Prime depth_tex on every frame so non-outline draws do not keep the
+    // default sampler unit 0, which can conflict with other sampler types.
+    shader->set_uniform("depth_tex", OUTLINE_DEPTH_TEX_UNIT);
+
     // Compute up direction accounting for build plate tilt. This is frame-invariant
     // (config cannot change mid-render), so compute it once before the volume loop.
     Vec3f up_direction = Vec3f::UnitZ();

src/slic3r/GUI/AMSMaterialsSetting.cpp

@@ -4,6 +4,7 @@
 #include "GUI_App.hpp"
 #include "libslic3r/Preset.hpp"
 #include "I18N.hpp"
+#include <algorithm>
 #include <boost/log/trivial.hpp>
 #include <wx/colordlg.h>
 #include <wx/dcgraph.h>
@@ -1075,54 +1076,105 @@ void AMSMaterialsSetting::Popup(wxString filament, wxString sn, wxString temp_mi
 
     // Sort the filaments
     {
-        static std::unordered_map<wxString, int> sorted_names
-        {   {"Bambu PLA Basic",        0},
-            {"Bambu PLA Matte",        1},
-            {"Bambu PETG HF",          2},
-            {"Bambu ABS",              3},
-            {"Bambu PLA Silk",         4},
-            {"Bambu PLA-CF" ,          5},
-            {"Bambu PLA Galaxy",       6},
-            {"Bambu PLA Metal",        7},
-            {"Bambu PLA Marble",       8},
-            {"Bambu PETG-CF",          9},
-            {"Bambu PETG Translucent", 10},
-            {"Bambu ABS-GF",           11}
+        std::unordered_map<wxString, int> selected_filament_ranks;
+
+        // Helper lambda to find a filament Preset by name. We can call this multiple times to walk the inheritance chain and find the base filament.
+        auto find_filament_by_name = [](const std::string& wanted, const PresetCollection& filaments) -> const Preset* {
+            for (auto it = filaments.begin(); it != filaments.end(); ++it) {
+                if (it->name == wanted) {
+                    return &(*it);
+                }
+            }
+            return nullptr;
         };
 
-        static std::vector<wxString> sorted_vendors { "Bambu Lab", "Generic" };
-        static std::vector<wxString> sorted_types { "PLA", "PETG", "ABS", "TPU" };
-        auto _filament_sorter = [&query_filament_vendors, &query_filament_types](const wxString& left, const wxString& right) -> bool
-        {
-            { // Compare name order
-                const auto& iter1 = sorted_names.find(left);
-                int name_order1 = (iter1 != sorted_names.end()) ? iter1->second : INT_MAX;
+        // For each active filament preset, find its base filament alias and promote it in extruder order.
+        auto        bundle       = wxGetApp().preset_bundle;
+        const auto& preset_names = bundle->filament_presets;
+        for (size_t i = preset_names.size(); i-- > 0; ) {
+            std::string wanted = preset_names[i];
+            const int sort_rank = -static_cast<int>(preset_names.size() - i);
+            
+            const Preset* match = nullptr;
 
-                const auto& iter2 = sorted_names.find(right);
-                int name_order2 = (iter2 != sorted_names.end()) ? iter2->second : INT_MAX;
-                if (name_order1 != name_order2)
+            do {
+                auto find_result = find_filament_by_name(wanted, bundle->filaments);
+                if (!find_result) {
+                    BOOST_LOG_TRIVIAL(error) << __FUNCTION__ << " No available filament name matches " << wanted;
+                    break;
+                }
+
+                match = find_result;
+
+                BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " Found available filament matching current preset name " << wanted
+                                        << " - Name: " << match->name << " - Alias: " << match->alias
+                                        << " - Inherits: " << match->inherits();
+
+                if (match->inherits().length() == 0) {
+                    BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " No more inherits so we reached the base filament";
+                    break;
+                }
+
+                wanted = match->inherits();
+            } while (1); // Or loop while (match->alias.length() == 0) because existence of alias and inherits on a Preset seem to be exclusive
+
+            if (!match) {
+                continue;
+            }
+
+            BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " Update filament rank to " + std::to_string(sort_rank) + " for preset Name: "
+                                    << match->name << " - Alias: " << match->alias;
+            selected_filament_ranks.insert_or_assign(match->alias, sort_rank);
+        }
+        
+        static const std::vector<wxString> sorted_vendors { "Generic" };
+        static const std::vector<wxString> sorted_types { "PLA", "PETG", "ABS", "TPU" };
+        auto priority_rank = [](const std::vector<wxString>& priorities, const wxString& value) {
+            const auto iter = std::find_if(priorities.begin(), priorities.end(), [&value](const wxString& priority) {
+                return priority.CmpNoCase(value) == 0;
+            });
+            return iter - priorities.begin();
+        };
+        auto _filament_sorter = [&query_filament_vendors, &query_filament_types, &selected_filament_ranks, &priority_rank](const wxString& left, const wxString& right) -> bool
+        {
+            { // Compare selected filament order
+                const auto& iter1 = selected_filament_ranks.find(left);
+                int selected_order1 = (iter1 != selected_filament_ranks.end()) ? iter1->second : INT_MAX;
+
+                const auto& iter2 = selected_filament_ranks.find(right);
+                int selected_order2 = (iter2 != selected_filament_ranks.end()) ? iter2->second : INT_MAX;
+                if (selected_order1 != selected_order2)
                 {
-                    return name_order1 < name_order2;
+                    return selected_order1 < selected_order2;
                 }
             }
             { // Compare vendor
-                auto iter1 = std::find(sorted_vendors.begin(), sorted_vendors.end(), query_filament_vendors[left]);
-                auto iter2 = std::find(sorted_vendors.begin(), sorted_vendors.end(), query_filament_vendors[right]);
-                if (iter1 != iter2)
-                {
-                    return iter1 < iter2;
-                };
+                const wxString& vendor1 = query_filament_vendors.at(left);
+                const wxString& vendor2 = query_filament_vendors.at(right);
+                const auto      rank1   = priority_rank(sorted_vendors, vendor1);
+                const auto      rank2   = priority_rank(sorted_vendors, vendor2);
+                if (rank1 != rank2)
+                    return rank1 < rank2;
+
+                const int vendor_compare = vendor1.CmpNoCase(vendor2);
+                if (vendor_compare != 0)
+                    return vendor_compare < 0;
             }
             { // Compare type
-                auto iter1 = std::find(sorted_types.begin(), sorted_types.end(), query_filament_types[left]);
-                auto iter2 = std::find(sorted_types.begin(), sorted_types.end(), query_filament_types[right]);
-                if (iter1 != iter2)
-                {
-                    return iter1 < iter2;
-                }
+                const wxString& type1 = query_filament_types.at(left);
+                const wxString& type2 = query_filament_types.at(right);
+                const auto      rank1 = priority_rank(sorted_types, type1);
+                const auto      rank2 = priority_rank(sorted_types, type2);
+                if (rank1 != rank2)
+                    return rank1 < rank2;
+
+                const int type_compare = type1.CmpNoCase(type2);
+                if (type_compare != 0)
+                    return type_compare < 0;
             }
 
-            return left < right;
+            const int name_compare = left.CmpNoCase(right);
+            return name_compare != 0 ? name_compare < 0 : left < right;
         };
 
         std::sort(filament_items.begin(), filament_items.end(), _filament_sorter);

src/slic3r/GUI/Auxiliary.cpp

@@ -869,11 +869,11 @@ void AuxiliaryPanel::init_tabpanel()
     m_assembly_panel          = new AuFolderPanel(m_tabpanel, AuxiliaryFolderType::ASSEMBLY_GUIDE);
     m_others_panel            = new AuFolderPanel(m_tabpanel, AuxiliaryFolderType::OTHERS);
 
-    m_tabpanel->AddPage(m_designer_panel, _L("Basic Info"), "", true);
-    m_tabpanel->AddPage(m_pictures_panel, _L("Pictures"), "", false);
-    m_tabpanel->AddPage(m_bill_of_materials_panel, _L("Bill of Materials"), "", false);
-    m_tabpanel->AddPage(m_assembly_panel, _L("Assembly Guide"), "", false);
-    m_tabpanel->AddPage(m_others_panel, _L("Others"), "", false);
+    m_tabpanel->AddPage(m_designer_panel, _L("Basic Info"), true);
+    m_tabpanel->AddPage(m_pictures_panel, _L("Pictures"), false);
+    m_tabpanel->AddPage(m_bill_of_materials_panel, _L("Bill of Materials"), false);
+    m_tabpanel->AddPage(m_assembly_panel, _L("Assembly Guide"), false);
+    m_tabpanel->AddPage(m_others_panel, _L("Others"), false);
 }
 
 wxWindow *AuxiliaryPanel::create_side_tools()

src/slic3r/GUI/CalibrationPanel.cpp

@@ -488,7 +488,6 @@ void CalibrationPanel::init_tabpanel() {
             selected = true;
         m_tabpanel->AddPage(m_cali_panels[i],
             get_calibration_type_name(m_cali_panels[i]->get_calibration_mode()),
-            "",
             selected);
     }
 

src/slic3r/GUI/CalibrationWizardSavePage.hpp

@@ -193,7 +193,7 @@ public:
 
     void show_panels(CalibrationMethod method, const PrinterSeries printer_ser);
 
-    void on_device_connected(MachineObject* obj);
+    void on_device_connected(MachineObject* obj) override;
 
     void update(MachineObject* obj) override;
 

src/slic3r/GUI/CalibrationWizardStartPage.hpp

@@ -48,8 +48,8 @@ public:
 
     void create_page(wxWindow* parent);
 
-    void on_reset_page();
-    void on_device_connected(MachineObject* obj);
+    void on_reset_page() override;
+    void on_device_connected(MachineObject* obj) override;
     void msw_rescale() override;
 };
 
@@ -63,8 +63,8 @@ public:
         long style = wxTAB_TRAVERSAL);
 
     void create_page(wxWindow* parent);
-    void on_reset_page();
-    void on_device_connected(MachineObject* obj);
+    void on_reset_page() override;
+    void on_device_connected(MachineObject* obj) override;
     void msw_rescale() override;
 };
 

src/slic3r/GUI/ConfigManipulation.cpp

@@ -12,6 +12,7 @@
 #include "libslic3r/GCode/AdaptivePAProcessor.hpp"
 #include "Plater.hpp"
 
+#include <algorithm>
 #include <sstream>
 #include <wx/msgdlg.h>
 
@@ -70,6 +71,12 @@ void ConfigManipulation::toggle_line(const std::string& opt_key, const bool togg
         cb_toggle_line(opt_key, toggle, opt_index);
 }
 
+void ConfigManipulation::set_option_label(const std::string& opt_key, const wxString& label, int opt_index)
+{
+    if (cb_set_option_label)
+        cb_set_option_label(opt_key, label, opt_index);
+}
+
 void ConfigManipulation::check_nozzle_recommended_temperature_range(DynamicPrintConfig *config) {
     if (is_msg_dlg_already_exist)
         return;
@@ -244,6 +251,59 @@ void ConfigManipulation::check_chamber_minimal_temperature(DynamicPrintConfig* c
     }
 }
 
+void ConfigManipulation::layer_height_limits(double& min_layer_height, double& max_layer_height) const
+{
+    const DynamicPrintConfig& printer_config = GUI::wxGetApp().preset_bundle->printers.get_edited_preset().config;
+    const std::vector<double>& min_limits = printer_config.option<ConfigOptionFloats>("min_layer_height")->values;
+    const std::vector<double>& max_limits = printer_config.option<ConfigOptionFloats>("max_layer_height")->values;
+    min_layer_height = *std::min_element(min_limits.begin(), min_limits.end());
+    max_layer_height = *std::max_element(max_limits.begin(), max_limits.end());
+}
+
+bool ConfigManipulation::check_layer_height(DynamicPrintConfig* config)
+{
+    double min_layer_height = 0., max_layer_height = 0.;
+    layer_height_limits(min_layer_height, max_layer_height);
+    const double layer_height = config->opt_float("layer_height");
+
+    if (min_layer_height > EPSILON && layer_height < EPSILON) {
+        const wxString msg_text = wxString::Format(_L("Layer height is too small. It will be set to the minimum (%g mm)."), min_layer_height);
+        MessageDialog dialog(wxGetApp().plater(), msg_text, "", wxICON_WARNING | wxOK);
+        dialog.SetButtonLabel(wxID_OK, _L("OK"));
+        is_msg_dlg_already_exist = true;
+        dialog.ShowModal();
+        is_msg_dlg_already_exist = false;
+        DynamicPrintConfig new_conf = *config;
+        new_conf.set_key_value("layer_height", new ConfigOptionFloat(min_layer_height));
+        apply(config, &new_conf);
+        return true;
+    }
+    if (max_layer_height > EPSILON && layer_height > max_layer_height + EPSILON)
+        return layer_height_out_of_range_dialog(config, max_layer_height);
+    if (min_layer_height > EPSILON && layer_height < min_layer_height - EPSILON)
+        return layer_height_out_of_range_dialog(config, min_layer_height);
+    return false;
+}
+
+bool ConfigManipulation::layer_height_out_of_range_dialog(DynamicPrintConfig* config, double clamp_to)
+{
+    wxString msg_text = _(L("Layer height is outside the limits set in Printer Settings -> Extruder -> Layer height limits, "
+                            "this may cause printing quality issues."));
+    msg_text += "\n\n" + wxString::Format(_L("Adjust it to the limit (%g mm) automatically?"), clamp_to);
+    MessageDialog dialog(wxGetApp().plater(), msg_text, "", wxICON_WARNING | wxYES | wxNO);
+    dialog.SetButtonLabel(wxID_YES, _L("Adjust"));
+    dialog.SetButtonLabel(wxID_NO, _L("Ignore"));
+    is_msg_dlg_already_exist = true;
+    const bool adjust = dialog.ShowModal() == wxID_YES;
+    if (adjust) {
+        DynamicPrintConfig new_conf = *config;
+        new_conf.set_key_value("layer_height", new ConfigOptionFloat(clamp_to));
+        apply(config, &new_conf);
+    }
+    is_msg_dlg_already_exist = false;
+    return adjust;
+}
+
 void ConfigManipulation::update_print_fff_config(DynamicPrintConfig* config, const bool is_global_config, const bool is_plate_config)
 {
     // #ys_FIXME_to_delete
@@ -258,7 +318,6 @@ void ConfigManipulation::update_print_fff_config(DynamicPrintConfig* config, con
 
     // layer_height shouldn't be equal to zero
     auto layer_height = config->opt_float("layer_height");
-    auto gpreset = GUI::wxGetApp().preset_bundle->printers.get_edited_preset();
     if (layer_height < EPSILON)
     {
         const wxString msg_text = _(L("Layer height too small\nIt has been reset to 0.2"));
@@ -271,20 +330,6 @@ void ConfigManipulation::update_print_fff_config(DynamicPrintConfig* config, con
         is_msg_dlg_already_exist = false;
     }
 
-    //BBS: limite the max layer_herght
-    auto max_lh = gpreset.config.opt_float("max_layer_height",0);
-    if (max_lh > 0.2 && layer_height > max_lh+ EPSILON)
-    {
-        const wxString msg_text = wxString::Format(L"Too large layer height.\nReset to %0.3f.", max_lh);
-        MessageDialog dialog(nullptr, msg_text, "", wxICON_WARNING | wxOK);
-        DynamicPrintConfig new_conf = *config;
-        is_msg_dlg_already_exist = true;
-        dialog.ShowModal();
-        new_conf.set_key_value("layer_height", new ConfigOptionFloat(max_lh));
-        apply(config, &new_conf);
-        is_msg_dlg_already_exist = false;
-    }
-
     //BBS: ironing_spacing shouldn't be too small or equal to zero
     if (config->opt_float("ironing_spacing") < 0.05)
     {
@@ -729,6 +774,7 @@ void ConfigManipulation::toggle_print_fff_options(DynamicPrintConfig *config, in
     bool has_top_shell    = has_top_shell_layers && config->option<ConfigOptionPercent>("top_surface_density")->value > 0;
     bool has_bottom_shell = config->opt_int("bottom_shell_layers") > 0;
     bool has_solid_infill = has_top_shell_layers || has_bottom_shell;
+    toggle_line("sparse_infill_smooth_factor", is_smoothable_infill_pattern(pattern, config->opt_int("fill_multiline")));
     toggle_field("top_surface_pattern", has_top_shell);
     toggle_field("bottom_surface_pattern", has_bottom_shell);
     toggle_field("top_surface_density", has_top_shell_layers);
@@ -849,14 +895,19 @@ void ConfigManipulation::toggle_print_fff_options(DynamicPrintConfig *config, in
     toggle_field("outer_wall_filament_id", have_perimeters || have_brim);
     toggle_field("inner_wall_filament_id", have_perimeters || have_brim);
 
-    bool have_brim_ear = (config->opt_enum<BrimType>("brim_type") == btEar) && !is_belt_tilted;
+    const BrimType brim_type = config->opt_enum<BrimType>("brim_type");
+    const bool have_auto_brim_ear = brim_type == btEar && !is_belt_tilted;
+    const bool have_painted_brim_ear = brim_type == btPainted && !is_belt_tilted;
+    set_option_label("brim_width", have_auto_brim_ear ? _L("Brim ear radius") : _L("Brim width"));
     const auto brim_width = config->opt_float("brim_width");
-    // disable brim_ears_max_angle and brim_ears_detection_length if brim_width is 0
+    // Automatic brim ear settings require a non-zero brim width.
     toggle_field("brim_ears_max_angle", brim_width > 0.0f);
     toggle_field("brim_ears_detection_length", brim_width > 0.0f);
-    // hide brim_ears_max_angle and brim_ears_detection_length if brim_ear is not selected
-    toggle_line("brim_ears_max_angle", have_brim_ear);
-    toggle_line("brim_ears_detection_length", have_brim_ear);
+    // Painted ears carry their own radius and do not depend on brim_width.
+    toggle_field("brim_ears_outer_only", have_painted_brim_ear || brim_width > 0.0f);
+    toggle_line("brim_ears_max_angle", have_auto_brim_ear);
+    toggle_line("brim_ears_detection_length", have_auto_brim_ear);
+    toggle_line("brim_ears_outer_only", have_auto_brim_ear || have_painted_brim_ear);
 
     // Hide Elephant foot compensation layers if elefant_foot_compensation is not enabled
     toggle_line("elefant_foot_compensation_layers", config->opt_float("elefant_foot_compensation") > 0 || config->option<ConfigOptionPercent>("elefant_foot_layers_density")->get_abs_value(1.0f) < 1.0f);

src/slic3r/GUI/ConfigManipulation.hpp

@@ -29,6 +29,7 @@ class ConfigManipulation
     std::function<void()>                                       load_config = nullptr;
     std::function<void (const std::string&, bool toggle, int opt_index)>   cb_toggle_field = nullptr;
     std::function<void(const std::string &, bool toggle, int opt_index)> cb_toggle_line  = nullptr;
+    std::function<void(const std::string &, const wxString &, int opt_index)> cb_set_option_label = nullptr;
     // callback to propagation of changed value, if needed
     std::function<void(const std::string&, const boost::any&)>  cb_value_change = nullptr;
     //BBS: change local config to const DynamicPrintConfig
@@ -45,10 +46,12 @@ public:
         std::function<void(const std::string&, const boost::any&)>  cb_value_change,
         //BBS: change local config to DynamicPrintConfig
         const DynamicPrintConfig* local_config = nullptr,
-        wxWindow* msg_dlg_parent  = nullptr) :
+        wxWindow* msg_dlg_parent  = nullptr,
+        std::function<void(const std::string &, const wxString &, int opt_index)> cb_set_option_label = nullptr) :
         load_config(load_config),
         cb_toggle_field(cb_toggle_field),
         cb_toggle_line(cb_toggle_line),
+        cb_set_option_label(cb_set_option_label),
         cb_value_change(cb_value_change),
         m_msg_dlg_parent(msg_dlg_parent),
         local_config(local_config) {}
@@ -58,6 +61,7 @@ public:
         load_config = nullptr;
         cb_toggle_field = nullptr;
         cb_toggle_line = nullptr;
+        cb_set_option_label = nullptr;
         cb_value_change = nullptr;
     }
 
@@ -67,6 +71,7 @@ public:
     t_config_option_keys const &applying_keys() const;
     void    toggle_field(const std::string& field_key, const bool toggle, int opt_index = -1);
     void    toggle_line(const std::string& field_key, const bool toggle, int opt_index = -1);
+    void    set_option_label(const std::string& field_key, const wxString& label, int opt_index = -1);
 
     // FFF print
     void    update_print_fff_config(DynamicPrintConfig* config, const bool is_global_config = false, const bool is_plate_config = false);
@@ -81,6 +86,9 @@ public:
     void    check_filament_max_volumetric_speed(DynamicPrintConfig *config);
     void    check_chamber_temperature(DynamicPrintConfig* config);
     void    check_chamber_minimal_temperature(DynamicPrintConfig* config);
+    bool    check_layer_height(DynamicPrintConfig* config);
+    bool    layer_height_out_of_range_dialog(DynamicPrintConfig* config, double clamp_to);
+    void    layer_height_limits(double& min_layer_height, double& max_layer_height) const;
     void    set_is_BBL_Printer(bool is_bbl_printer) { is_BBL_Printer = is_bbl_printer; };
     bool    get_is_BBL_Printer() { return is_BBL_Printer; };
     // SLA print

src/slic3r/GUI/ConfigWizard.cpp

@@ -66,41 +66,41 @@ using Config::SnapshotDB;
 
 // Configuration data structures extensions needed for the wizard
 //BBS: set BBL as default
-bool Bundle::load(fs::path source_path, bool ais_in_resources, bool ais_bbl_bundle)
+bool Bundle::load(fs::path dir, const std::string &vendor_name, bool ais_in_resources, bool ais_bbl_bundle)
 {
     this->preset_bundle = std::make_unique<PresetBundle>();
     this->is_in_resources = ais_in_resources;
     this->is_bbl_bundle = ais_bbl_bundle;
 
-    std::string path_string = source_path.string();
-    std::string parent_path = source_path.parent_path().string();
     //BBS: add json logic for vendor bundles
-    std::string vendor_name = source_path.filename().string();
-    if (Slic3r::is_json_file(path_string)) {
-        // Remove the .json suffix.
-        vendor_name.erase(vendor_name.size() - 5);
-    }
-    else
+    // Orca: served from the vendor's preset cache where one covers it — which is
+    // how a shipped build carries its vendors — and parsed from the JSONs otherwise.
+    // A vendor that can be neither read nor parsed — a cache the build cannot use
+    // with the preset JSONs behind it pruned, say — is one the wizard cannot offer.
+    // Every other vendor still can be, so it is left out rather than thrown over.
+    size_t presets_loaded = 0;
+    try {
+        auto [config_substitutions, loaded] = preset_bundle->load_vendor_configs_from_json(
+            dir.string(), vendor_name, PresetBundle::LoadConfigBundleAttribute::LoadSystem, ForwardCompatibilitySubstitutionRule::Disable);
+        UNUSED(config_substitutions);
+        // No substitutions shall be reported when loading a system config bundle, no substitutions are allowed.
+        assert(config_substitutions.empty());
+        presets_loaded = loaded;
+    } catch (const std::exception &e) {
+        BOOST_LOG_TRIVIAL(fatal) << boost::format("Vendor bundle: `%1%`: cannot be loaded, leaving it out: %2%") % vendor_name % e.what();
         return false;
-
-    // Throw when parsing invalid configuration. Only valid configuration is supposed to be provided over the air.
-    //BBS: add json logic for vendor bundles
-    auto [config_substitutions, presets_loaded] = preset_bundle->load_vendor_configs_from_json(
-        parent_path, vendor_name, PresetBundle::LoadConfigBundleAttribute::LoadSystem, ForwardCompatibilitySubstitutionRule::Disable);
-    UNUSED(config_substitutions);
-    // No substitutions shall be reported when loading a system config bundle, no substitutions are allowed.
-    assert(config_substitutions.empty());
+    }
     auto first_vendor = preset_bundle->vendors.begin();
     if (first_vendor == preset_bundle->vendors.end()) {
-        BOOST_LOG_TRIVIAL(error) << boost::format("Vendor bundle: `%1%`: No vendor information defined, cannot install.") % path_string;
+        BOOST_LOG_TRIVIAL(error) << boost::format("Vendor bundle: `%1%`: No vendor information defined, cannot install.") % vendor_name;
         return false;
     }
     if (presets_loaded == 0) {
-        BOOST_LOG_TRIVIAL(error) << boost::format("Vendor bundle: `%1%`: No profile loaded.") % path_string;
+        BOOST_LOG_TRIVIAL(error) << boost::format("Vendor bundle: `%1%`: No profile loaded.") % vendor_name;
         return false;
-    } 
+    }
 
-    BOOST_LOG_TRIVIAL(trace) << boost::format("Vendor bundle: `%1%`: %2% profiles loaded.") % path_string % presets_loaded;
+    BOOST_LOG_TRIVIAL(trace) << boost::format("Vendor bundle: `%1%`: %2% profiles loaded.") % vendor_name % presets_loaded;
     this->vendor_profile = &first_vendor->second;
     return true;
 }
@@ -125,15 +125,10 @@ BundleMap BundleMap::load()
 
     //Orca: add custom as default
     //Orca: add json logic for vendor bundle
-    auto orca_bundle_path = (vendor_dir / PresetBundle::ORCA_DEFAULT_BUNDLE).replace_extension(".json");
-    auto orca_bundle_rsrc = false;
-    if (!boost::filesystem::exists(orca_bundle_path)) {
-        orca_bundle_path = (rsrc_vendor_dir / PresetBundle::ORCA_DEFAULT_BUNDLE).replace_extension(".json");
-        orca_bundle_rsrc = true;
-    }
     {
+        const bool from_rsrc = ! is_vendor_installed(PresetBundle::ORCA_DEFAULT_BUNDLE);
         Bundle bbl_bundle;
-        if (bbl_bundle.load(std::move(orca_bundle_path), orca_bundle_rsrc, true))
+        if (bbl_bundle.load(from_rsrc ? rsrc_vendor_dir : vendor_dir, PresetBundle::ORCA_DEFAULT_BUNDLE, from_rsrc, true))
             res.emplace(PresetBundle::ORCA_DEFAULT_BUNDLE, std::move(bbl_bundle));
     }
 
@@ -141,18 +136,13 @@ BundleMap BundleMap::load()
     // and then additionally from resources/profiles.
     bool is_in_resources = false;
     for (auto dir : { &vendor_dir, &rsrc_vendor_dir }) {
-        for (const auto &dir_entry : boost::filesystem::directory_iterator(*dir)) {
-            //BBS: add json logic for vendor bundle
-            if (Slic3r::is_json_file(dir_entry.path().string())) {
-                std::string id = dir_entry.path().stem().string();  // stem() = filename() without the trailing ".json" part
+        for (const std::string &id : vendor_names_in(*dir)) {
+            // Don't load this bundle if we've already loaded it.
+            if (res.find(id) != res.end()) { continue; }
 
-                // Don't load this bundle if we've already loaded it.
-                if (res.find(id) != res.end()) { continue; }
-
-                Bundle bundle;
-                if (bundle.load(dir_entry.path(), is_in_resources))
-                    res.emplace(std::move(id), std::move(bundle));
-            }
+            Bundle bundle;
+            if (bundle.load(*dir, id, is_in_resources))
+                res.emplace(id, std::move(bundle));
         }
 
         is_in_resources = true;

src/slic3r/GUI/ConfigWizard_private.hpp

@@ -71,9 +71,11 @@ struct Bundle
 	Bundle() = default;
 	Bundle(Bundle&& other);
 
+	// Load the vendor `vendor_name` as it is installed in `dir`, from its preset
+	// cache or its profile JSONs, whichever is usable.
 	// Returns false if not loaded. Reason for that is logged as boost::log error.
 	//BBS: set BBL as default
-	bool load(fs::path source_path, bool is_in_resources, bool is_bbl_bundle = false);
+	bool load(fs::path dir, const std::string &vendor_name, bool is_in_resources, bool is_bbl_bundle = false);
 
 	const std::string& vendor_id() const { return vendor_profile->id; }
 };

src/slic3r/GUI/ConnectPrinter.cpp

@@ -156,6 +156,8 @@ void ConnectPrinterDialog::on_input_enter(wxCommandEvent& evt)
 void ConnectPrinterDialog::on_button_confirm(wxCommandEvent &event)
 {
     wxString code = m_textCtrl_code->GetTextCtrl()->GetValue();
+    if (code.empty())
+        code = "88888888";
     for (char c : code) {
         if (!(('0' <= c && c <= '9') || ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))) {
             show_error(this, _L("Invalid input"));
@@ -163,7 +165,7 @@ void ConnectPrinterDialog::on_button_confirm(wxCommandEvent &event)
         }
     }
     if (m_obj) {
-        m_obj->set_user_access_code(code.ToStdString());
+        m_obj->set_access_code(code.ToStdString());
     }
     EndModal(wxID_OK);
 }

src/slic3r/GUI/CreatePresetsDialog.cpp

@@ -2201,25 +2201,14 @@ bool CreatePrinterPresetDialog::load_system_and_user_presets_with_curr_model(Pre
     } else {
         selected_vendor_id = m_printer_preset_vendor_selected.id;
 
-        if (boost::filesystem::exists(boost::filesystem::path(Slic3r::data_dir()) / PRESET_SYSTEM_DIR / selected_vendor_id)) {
-            preset_path = (boost::filesystem::path(Slic3r::data_dir()) / PRESET_SYSTEM_DIR).string();
-        } else if (boost::filesystem::exists(boost::filesystem::path(Slic3r::resources_dir()) / "profiles" / selected_vendor_id)) {
-            preset_path = (boost::filesystem::path(Slic3r::resources_dir()) / "profiles").string();
-        }
-
-        if (preset_path.empty()) {
-            BOOST_LOG_TRIVIAL(info) << "Preset path was not found";
-            MessageDialog dlg(this, _L("Preset path was not found; please reselect vendor."), wxString(SLIC3R_APP_FULL_NAME) + " - " + _L("Info"),
-                              wxYES_NO | wxYES_DEFAULT | wxCENTRE);
-            dlg.ShowModal();
-            return false;
-        }
-
         try {
             // Pass the app's preset bundle (which already holds OrcaFilamentLibrary) as the base
             // bundle so vendor filaments that inherit OFL bases resolve via the existing
             // cross-vendor inheritance path.
-            temp_preset_bundle.load_vendor_configs_from_json(preset_path, selected_vendor_id,
+            // Orca: served from the vendor's preset cache where one covers it — a shipped
+            // build carries that instead of the raw preset JSONs — and parsed otherwise.
+            temp_preset_bundle.load_vendor_configs_from_json((boost::filesystem::path(Slic3r::data_dir()) / PRESET_SYSTEM_DIR).string(),
+                                                             selected_vendor_id,
                                                              PresetBundle::LoadConfigBundleAttribute::LoadSystem,
                                                              ForwardCompatibilitySubstitutionRule::EnableSilent,
                                                              wxGetApp().preset_bundle);

src/slic3r/GUI/DeviceCore/DevManager.cpp

@@ -10,11 +10,39 @@
 #include "slic3r/GUI/I18N.hpp"
 #include "slic3r/GUI/GUI_App.hpp"
 #include "slic3r/GUI/Plater.hpp"
+#include "slic3r/Utils/NetworkAgentFactory.hpp"
 
 #include "libslic3r/Time.hpp"
 
 using namespace nlohmann;
 
+namespace {
+    // Orca: access_code lives on BBLocalMachine::access_code (keyed by dev_id via
+    // get_local_machines(), scoped by the record's own printer_agent_id field) - so binding a
+    // printer under one agent doesn't silently appear as already-bound under a different,
+    // independent agent. This only covers LAN devices (BBLocalMachine's own scope); access_code
+    // and user_access_code used to be the only, flat dev_id-only AppConfig keys before
+    // BBLocalMachine::access_code existed, and codes saved back then are still stored flat (no
+    // agent association at all). Since BBL was the only agent that existed at the time, honor
+    // those flat legacy keys as implicitly BBL's - but only for the BBL agent, so they aren't
+    // leaked to other agents that never bound the device themselves.
+    std::string get_access_code_with_legacy_fallback(Slic3r::AppConfig* config, const std::string& dev_id, const std::string& agent_id)
+    {
+        const auto& machines = config->get_local_machines();
+        auto        it       = machines.find(dev_id);
+        if (it != machines.end() && it->second.printer_agent_id == agent_id && !it->second.access_code.empty())
+            return it->second.access_code;
+
+        if (agent_id == Slic3r::BBL_PRINTER_AGENT_ID || agent_id.empty()) {
+            std::string code = config->get("access_code", dev_id);
+            if (code.empty())
+                code = config->get("user_access_code", dev_id);
+            return code;
+        }
+        return "";
+    }
+}
+
 namespace Slic3r
 {
     DeviceManager::DeviceManager(NetworkAgent* agent)
@@ -43,13 +71,13 @@ namespace Slic3r
                 continue;
             MachineObject* obj       = new MachineObject(this, m_agent, m.dev_name, m.dev_id, m.dev_ip);
             obj->printer_type        = m.printer_type;
+            obj->printer_agent_id    = m.printer_agent_id;
             obj->dev_connection_type = "lan";
             obj->bind_state          = "free";
             obj->bind_sec_link       = "secure";
             obj->m_is_online         = true;
             obj->last_alive          = Slic3r::Utils::get_current_time_utc();
-            obj->set_access_code(config->get("access_code", m.dev_id), false);
-            obj->set_user_access_code(config->get("user_access_code", m.dev_id), false);
+            obj->set_access_code(get_access_code_with_legacy_fallback(config, m.dev_id, obj->printer_agent_id), false);
             if (obj->has_access_right()) {
                 localMachineList.insert(std::make_pair(m.dev_id, obj));
             } else {
@@ -66,10 +94,12 @@ namespace Slic3r
             if (m.is_lan_mode_printer()) {
                 if (m.has_access_right()) {
                     BBLocalMachine local_machine;
-                    local_machine.dev_id       = m.get_dev_id();
-                    local_machine.dev_name     = m.get_dev_name();
-                    local_machine.dev_ip       = m.get_dev_ip();
-                    local_machine.printer_type = m.printer_type;
+                    local_machine.dev_id           = m.get_dev_id();
+                    local_machine.dev_name         = m.get_dev_name();
+                    local_machine.dev_ip           = m.get_dev_ip();
+                    local_machine.printer_type     = m.printer_type;
+                    local_machine.printer_agent_id = m.printer_agent_id;
+                    local_machine.access_code      = m.get_access_code();
                     config->update_local_machine(local_machine);
                 }
             } else {
@@ -132,6 +162,14 @@ namespace Slic3r
         }
     }
 
+    std::string DeviceManager::get_current_printer_agent_id() const
+    {
+        if (!m_agent)
+            return "";
+        auto printer_agent = m_agent->get_printer_agent();
+        return printer_agent ? printer_agent->get_agent_info().id : "";
+    }
+
     void DeviceManager::EnableMultiMachine(bool enable)
     {
         m_agent->enable_multi_machine(enable);
@@ -328,6 +366,7 @@ namespace Slic3r
                 /* insert a new machine */
                 obj = new MachineObject(this, m_agent, dev_name, dev_id, dev_ip);
                 obj->printer_type = _parse_printer_type(printer_type_str);
+                obj->printer_agent_id = get_current_printer_agent_id();
                 obj->wifi_signal = printer_signal;
                 obj->dev_connection_type = connect_type;
                 obj->bind_state     = bind_state;
@@ -339,8 +378,7 @@ namespace Slic3r
                 //load access code
                 AppConfig* config = Slic3r::GUI::wxGetApp().app_config;
                 if (config) {
-                    obj->set_access_code(Slic3r::GUI::wxGetApp().app_config->get("access_code", dev_id), false);
-                    obj->set_user_access_code(Slic3r::GUI::wxGetApp().app_config->get("user_access_code", dev_id), false);
+                    obj->set_access_code(get_access_code_with_legacy_fallback(config, dev_id, obj->printer_agent_id), false);
                 }
                 localMachineList.insert(std::make_pair(dev_id, obj));
 
@@ -369,6 +407,7 @@ namespace Slic3r
             obj = it->second;
         } else {
             obj = new MachineObject(this, m_agent, machine.dev_name, machine.dev_id, machine.dev_ip);
+            obj->printer_agent_id = get_current_printer_agent_id();
             localMachineList.insert(std::make_pair(machine.dev_id, obj));
         }
         if (machine.printer_type.empty())
@@ -382,7 +421,6 @@ namespace Slic3r
         obj->m_is_online = true;
         obj->last_alive = Slic3r::Utils::get_current_time_utc();
         obj->set_access_code(access_code, false);
-        obj->set_user_access_code(access_code, false);
 
         update_local_machine(*obj);
 
@@ -496,6 +534,36 @@ namespace Slic3r
         OnSelectedMachineChanged(previous_selected_machine, selected_machine);
     }
 
+    void DeviceManager::clear_other_devices(const std::string& target_agent_id)
+    {
+        // why: on agent swap, keep "My Devices" but drop the transient "Other Devices"
+        // Those belong to the previous agent's network scan; the new agent's start_discovery re-populates its own.
+        //
+        // Also drop "My Devices" stamped by a different agent than the one we're swapping to
+        // (target_agent_id, passed by the caller since the live agent hasn't been repointed yet
+        // at this point): otherwise a device first discovered under agent A survives every swap
+        // with a stale printer_agent_id, stays hidden from every agent's filtered list, and only
+        // gets re-tagged if something happens to delete and re-create it (e.g. account logout).
+        // Dropping it here instead lets the new agent's start_discovery re-insert and re-stamp it
+        // like any other fresh device.
+        const auto my = get_my_machine_list();
+        for (auto it = localMachineList.begin(); it != localMachineList.end();)
+        {
+            const bool is_my_device = my.find(it->first) != my.end();
+            const bool agent_mismatch = !target_agent_id.empty() && it->second &&
+                                         it->second->printer_agent_id != target_agent_id;
+            if (!is_my_device || agent_mismatch)
+            {
+                delete it->second;
+                it = localMachineList.erase(it);
+            }
+            else
+            {
+                ++it;
+            }
+        }
+    }
+
     bool DeviceManager::set_selected_machine(std::string dev_id)
     {
         BOOST_LOG_TRIVIAL(info) << "set_selected_machine=" << dev_id
@@ -558,7 +626,6 @@ namespace Slic3r
             }
             else
             {
-                Slic3r::GUI::wxGetApp().reset_unsigned_plugin_warning();
                 if (m_agent)
                 {
                     if (it->second->connection_type() != "lan" || it->second->connection_type().empty())
@@ -669,13 +736,16 @@ namespace Slic3r
             m_agent->add_subscribe(subscribe_list_cache);
     }
 
-    std::map<std::string, MachineObject*> DeviceManager::get_my_machine_list()
+    std::map<std::string, MachineObject*> DeviceManager::get_my_machine_list(const std::string& agent_id)
     {
         std::map<std::string, MachineObject*> result;
 
         for (auto it = userMachineList.begin(); it != userMachineList.end(); it++)
         {
-            if (it->second && !it->second->is_lan_mode_printer())
+            if (!it->second || (!agent_id.empty() && it->second->printer_agent_id != agent_id))
+                continue;
+
+            if (!it->second->is_lan_mode_printer())
             {
                 result.insert(std::make_pair(it->first, it->second));
             }
@@ -683,7 +753,10 @@ namespace Slic3r
 
         for (auto it = localMachineList.begin(); it != localMachineList.end(); it++)
         {
-            if (it->second && it->second->has_access_right() && it->second->is_avaliable() && it->second->is_lan_mode_printer())
+            if (!it->second || (!agent_id.empty() && it->second->printer_agent_id != agent_id))
+                continue;
+
+            if (it->second->has_access_right() && it->second->is_avaliable() && it->second->is_lan_mode_printer())
             {
                 // remove redundant in userMachineList
                 if (result.find(it->first) == result.end())
@@ -695,12 +768,15 @@ namespace Slic3r
         return result;
     }
 
-    std::map<std::string, MachineObject*> DeviceManager::get_my_cloud_machine_list()
+    std::map<std::string, MachineObject*> DeviceManager::get_my_cloud_machine_list(const std::string& agent_id)
     {
         std::map<std::string, MachineObject*> result;
         for (auto it = userMachineList.begin(); it != userMachineList.end(); it++)
         {
-            if (it->second && !it->second->is_lan_mode_printer()) { result.emplace(*it); }
+            if (!it->second || (!agent_id.empty() && it->second->printer_agent_id != agent_id))
+                continue;
+
+            if (!it->second->is_lan_mode_printer()) { result.emplace(*it); }
         }
         return result;
     }
@@ -773,6 +849,7 @@ namespace Slic3r
                     else
                     {
                         obj = new MachineObject(this, m_agent, "", "", "");
+                        obj->printer_agent_id = get_current_printer_agent_id();
                         if (m_agent)
                         {
                             obj->set_bind_status(m_agent->get_user_name(provider));
@@ -851,7 +928,9 @@ namespace Slic3r
         int result = m_agent->get_user_print_info(&http_code, &body, provider);
         if (result == 0)
         {
-            parse_user_print_info(body);
+            // parse_user_print_info and on_machine_alive (SSDP for discovery) both mutate the same userMachineList map.
+            // on_machine_alive mutates the map on the UI thread, do the same for parse_user_print_info.
+            Slic3r::GUI::wxGetApp().CallAfter([this, body]() { parse_user_print_info(body); });
         }
     }
 
@@ -878,17 +957,15 @@ namespace Slic3r
 
     void DeviceManager::load_last_machine()
     {
-        if (userMachineList.empty()) return;
-        else if (userMachineList.size() == 1) {
-            this->set_selected_machine(userMachineList.begin()->second->get_dev_id());
-        } else {
-            const auto& last_monitor_machine = get_user_last_machine();
-            if (userMachineList.find(last_monitor_machine) != userMachineList.end()) {
-                set_selected_machine(last_monitor_machine);
-            } else {
-                this->set_selected_machine(userMachineList.begin()->second->get_dev_id());
-            }
-        }
+        // Only reconnect the remembered cloud machine. Do not select an arbitrary
+        // first machine: agent swaps intentionally leave the selection empty until
+        // the new agent explicitly selects its configured printer.
+        if (userMachineList.empty())
+            return;
+
+        const auto& last_monitor_machine = get_user_last_machine();
+        if (userMachineList.find(last_monitor_machine) != userMachineList.end())
+            set_selected_machine(last_monitor_machine);
     }
 
     void DeviceManager::OnMachineBindStateChanged(MachineObject* obj, const std::string& new_state)

src/slic3r/GUI/DeviceCore/DevManager.h

@@ -48,6 +48,10 @@ public:
     MachineObject* get_selected_machine();
     bool set_selected_machine(std::string dev_id);
 
+    // why: clears stale sidebar sync-status / AMS visuals. Public so the printer-agent
+    // swap path can reuse it instead of duplicating the two sidebar calls.
+    void OnSelectedMachineLost();
+
     void record_user_last_machine(const std::string& dev_id);
     std::string get_user_last_machine() const;
 
@@ -70,6 +74,11 @@ public:
     void erase_user_machine(std::string dev_id) { userMachineList.erase(dev_id); }
     void clean_user_info(bool keep_local_selection = false);
 
+    // target_agent_id: id of the agent being swapped to (empty = no agent-mismatch check,
+    // just the original "drop Other Devices" behavior). Pass the incoming agent's id, not the
+    // live one - this runs before the live agent is repointed.
+    void clear_other_devices(const std::string& target_agent_id = "");
+
     void load_last_machine();
     void update_user_machine_list_info(const std::string& provider);
     void parse_user_print_info(std::string body);
@@ -84,10 +93,15 @@ public:
 
     /* my machine*/
     MachineObject* get_my_machine(std::string dev_id);
-    std::map<std::string, MachineObject*> get_my_machine_list();
-    std::map<std::string, MachineObject*> get_my_cloud_machine_list();
+    std::map<std::string, MachineObject*> get_my_machine_list(const std::string& agent_id = "");
+    std::map<std::string, MachineObject*> get_my_cloud_machine_list(const std::string& agent_id = "");
     void modify_device_name(std::string dev_id, std::string dev_name, const std::string& provider);
 
+    // id of the currently live IPrinterAgent (IPrinterAgent::get_agent_info().id), or empty if
+    // m_agent has no printer agent set yet. Pass to get_my_machine_list()/get_my_cloud_machine_list()
+    // to scope results to the active agent.
+    std::string get_current_printer_agent_id() const;
+
     /* create machine or update machine properties */
     void on_machine_alive(std::string json_str);
     int query_bind_status(std::string& msg, const std::string& provider);
@@ -110,7 +124,6 @@ private:
     void check_pushing();
 
     void OnMachineBindStateChanged(MachineObject* obj, const std::string& new_state);
-    void OnSelectedMachineLost();
     void OnSelectedMachineChanged(const std::string& pre_dev_id, const std::string& new_dev_id);
 
 

src/slic3r/GUI/DeviceCore/DevStatus.cpp

@@ -27,6 +27,7 @@ void DevStatus::ParseStatus(const nlohmann::json& print_jj)
 #else
         BOOST_LOG_TRIVIAL(error) << __FUNCTION__ << ": get exception=" << e.what();
 #endif
+        (void)e; // suppress C4101 when BBL_RELEASE_TO_PUBLIC
     }
 }
 

src/slic3r/GUI/DeviceManager.cpp

@@ -3,6 +3,7 @@
 #include "libslic3r/Time.hpp"
 #include "libslic3r/Thread.hpp"
 #include "slic3r/Utils/NetworkAgent.hpp"
+#include "slic3r/Utils/NetworkAgentFactory.hpp"
 #include "GuiColor.hpp"
 
 #include "GUI_App.hpp"
@@ -449,9 +450,7 @@ bool MachineObject::HasRecentLanMessage()
 
 std::string MachineObject::get_access_code() const
 {
-    if (get_user_access_code().empty())
-        return access_code;
-    return get_user_access_code();
+    return access_code;
 }
 
 void MachineObject::set_access_code(std::string code, bool only_refresh)
@@ -460,47 +459,46 @@ void MachineObject::set_access_code(std::string code, bool only_refresh)
     if (only_refresh) {
         AppConfig* config = GUI::wxGetApp().app_config;
         if (config) {
-            if (!code.empty()) {
-                GUI::wxGetApp().app_config->set_str("access_code", get_dev_id(), code);
-                DeviceManager::update_local_machine(*this);
+            if (is_lan_mode_printer()) {
+                // why: LAN codes are scoped via BBLocalMachine::access_code, keyed by dev_id and
+                // scoped by that record's own printer_agent_id field - see the matching comment
+                // on get_access_code_with_legacy_fallback() in DevManager.cpp - so binding this
+                // device under one printer agent doesn't silently read as already-bound under a
+                // different, independent one. Cloud devices (the else branch below) aren't
+                // scoped this way: they're never recalled from a stale local cache across a
+                // session boundary, since parse_user_print_info() always overwrites their code
+                // fresh from the cloud API's current response, so there's no cross-agent leakage
+                // risk to guard against there.
+                if (!code.empty()) {
+                    DeviceManager::update_local_machine(*this);
+                } else {
+                    // Only patch an existing record's code - don't persist a brand-new
+                    // never-bound entry just because set_access_code("") was called on it.
+                    const auto& machines = config->get_local_machines();
+                    auto        it       = machines.find(get_dev_id());
+                    if (it != machines.end()) {
+                        BBLocalMachine local_machine = it->second;
+                        local_machine.access_code    = "";
+                        config->update_local_machine(local_machine);
+                    }
+                    // Also clear the pre-scoping flat legacy key when unbinding under BBL, so an
+                    // old BBL-era code can't silently "re-bind" this device again via
+                    // get_access_code_with_legacy_fallback()'s legacy fallback.
+                    if (printer_agent_id == BBL_PRINTER_AGENT_ID || printer_agent_id.empty()) {
+                        config->erase("access_code", get_dev_id());
+                        config->erase("user_access_code", get_dev_id());
+                    }
+                }
             } else {
-                GUI::wxGetApp().app_config->erase("access_code", get_dev_id());
+                if (!code.empty())
+                    config->set_str("access_code", get_dev_id(), code);
+                else
+                    config->erase("access_code", get_dev_id());
             }
         }
     }
 }
 
-void MachineObject::erase_user_access_code()
-{
-    this->user_access_code = "";
-    AppConfig* config = GUI::wxGetApp().app_config;
-    if (config) {
-        GUI::wxGetApp().app_config->erase("user_access_code", get_dev_id());
-        //GUI::wxGetApp().app_config->save();
-    }
-}
-
-void MachineObject::set_user_access_code(std::string code, bool only_refresh)
-{
-    this->user_access_code = code;
-    if (only_refresh && !code.empty()) {
-        AppConfig* config = GUI::wxGetApp().app_config;
-        if (config && !code.empty()) {
-            GUI::wxGetApp().app_config->set_str("user_access_code", get_dev_id(), code);
-            DeviceManager::update_local_machine(*this);
-        }
-    }
-}
-
-std::string MachineObject::get_user_access_code() const
-{
-    AppConfig* config = GUI::wxGetApp().app_config;
-    if (config) {
-        return GUI::wxGetApp().app_config->get("user_access_code", get_dev_id());
-    }
-    return "";
-}
-
 std::string MachineObject::get_show_printer_type() const
 {
     std::string printer_type = this->printer_type;
@@ -2907,7 +2905,6 @@ int MachineObject::parse_json(std::string tunnel, std::string payload, bool key_
                         std::string access_code = j_pre["system"]["access_code"].get<std::string>();
                         if (!access_code.empty()) {
                             set_access_code(access_code);
-                            set_user_access_code(access_code);
                         }
                     }
                 }
@@ -4647,6 +4644,40 @@ void MachineObject::set_ctt_dlg( wxString text){
     }
 }
 
+void MachineObject::show_unsupported_dlg(int code)
+{
+    // why: a dead control invites repeat clicks, and the frame is modeless - without the guard
+    // every click stacks another one. Same shape as set_ctt_dlg above, including the reset on
+    // both hide and close so a dismissed dialog can reappear on the next attempt.
+    if (m_unsupported_dlg_shown) {
+        return;
+    }
+    m_unsupported_dlg_shown = true;
+
+    // why: two codes so the user learns which kind of dead end this is - the slicer having no
+    // translation for the command, or the printer's own config lacking the hardware to run it.
+    const wxString text = (code == ORCA_NETWORK_ERR_CAP_NOT_AVAILABLE) ?
+                              _L("This printer is not configured with the hardware this control needs.") :
+                              _L("This control is not supported on this printer.");
+
+    // note: constructed directly rather than through CallAfter because every publish_json caller
+    // is on the UI thread - clicks come from wx handlers, and the agent marshals its own push
+    // callbacks back to main before parse_json runs. set_ctt_dlg relies on the same property.
+    auto unsupported_dlg = new GUI::SecondaryCheckDialog(nullptr, wxID_ANY, _L("Warning"),
+                                                         GUI::SecondaryCheckDialog::VisibleButtons::ONLY_CONFIRM);
+    unsupported_dlg->update_text(text);
+    unsupported_dlg->Bind(wxEVT_SHOW, [this](auto& e) {
+        if (!e.IsShown()) {
+            m_unsupported_dlg_shown = false;
+        }
+        });
+    unsupported_dlg->Bind(wxEVT_CLOSE_WINDOW, [this](auto& e) {
+        e.Skip();
+        m_unsupported_dlg_shown = false;
+        });
+    unsupported_dlg->on_show();
+}
+
 int MachineObject::publish_gcode(std::string gcode_str)
 {
     json j;

src/slic3r/GUI/DeviceManager.hpp

@@ -113,7 +113,6 @@ private:
     std::string dev_name;
     std::string dev_ip;
     std::string access_code;
-    std::string user_access_code;
 
     // type, time stamp, delay
     std::vector<std::tuple<std::string, uint64_t, uint64_t>> message_delay;
@@ -228,13 +227,18 @@ public:
     std::string get_access_code() const;
     void set_access_code(std::string code, bool only_refresh = true);
 
-    /*user access code*/
-    void set_user_access_code(std::string code, bool only_refresh = true);
-    void erase_user_access_code();
-    std::string get_user_access_code() const;
-
     //PRINTER_TYPE printer_type = PRINTER_3DPrinter_UKNOWN;
     std::string printer_type;       /* model_id */
+
+    // id of the IPrinterAgent that was used to discover or bind this device (IPrinterAgent::get_agent_info().id,
+    // e.g. "bbl"), stamped at creation time — not derived from get_agent(), since m_agent is a single
+    // process-wide NetworkAgent shared by every MachineObject and gets repointed on agent swap
+    // (see DeviceManager::set_agent()), so it can't tell which agent originally found this device.
+    // We persist this as well so that when the printer agent is swapped, we don't show unrelated devices,
+    // e.g. if the current printer agent is elegoo, we shouldn't show printers connected by BBL printer agent
+    // under local machines.
+    std::string printer_agent_id;
+
     std::string   get_show_printer_type() const;
     PrinterSeries get_printer_series() const;
     PrinterArch get_printer_arch() const;
@@ -272,9 +276,11 @@ public:
     bool m_is_online;
     bool m_lan_mode_connection_state{false};
     bool m_set_ctt_dlg{ false };
+    bool m_unsupported_dlg_shown{ false };
     void set_lan_mode_connection_state(bool state) {m_lan_mode_connection_state = state;};
     bool get_lan_mode_connection_state() {return m_lan_mode_connection_state;};
     void set_ctt_dlg( wxString text);
+    void show_unsupported_dlg(int code);
     int  parse_msg_count = 0;
     int  keep_alive_count = 0;
     std::chrono::system_clock::time_point   last_update_time;   /* last received print data from machine */

src/slic3r/GUI/DeviceTab/uiAmsHumidityPopup.cpp

@@ -1,9 +1,9 @@
-//**********************************************************/
-/* File: uiAmsHumidityPopup.cpp
+/**********************************************************
+* File: uiAmsHumidityPopup.cpp
 *  Description: The popup with DevAms Humidity
 *
 * \n class uiAmsHumidityPopup
-//**********************************************************/
+**********************************************************/
 
 #include "uiAmsHumidityPopup.h"
 
@@ -191,4 +191,4 @@ void uiAmsPercentHumidityDryPopup::msw_rescale()
 
 } // namespace GUI
 
-} // namespace Slic3r
+} // namespace Slic3r

src/slic3r/GUI/DeviceTab/uiAmsHumidityPopup.h

@@ -1,9 +1,9 @@
-//**********************************************************/
-/* File: uiAmsHumidityPopup.h
+/**********************************************************
+* File: uiAmsHumidityPopup.h
 *  Description: The popup with DevAms Humidity
 *
 *  \n class uiAmsHumidityPopup
-//**********************************************************/
+**********************************************************/
 
 #pragma once
 #include "slic3r/GUI/Widgets/AMSItem.hpp"
@@ -68,7 +68,7 @@ private:
 
     wxStaticBitmap* m_dry_state_img;
     Label*          m_dry_state;
-    
+
     Label* m_humidity_header;
     Label* m_humidity_label;
 
@@ -81,4 +81,4 @@ private:
     wxSizer*       m_sizer;
 };
 
-}} // namespace Slic3r::GUI
+}} // namespace Slic3r::GUI

src/slic3r/GUI/DeviceTab/uiDeviceUpdateVersion.cpp

@@ -1,9 +1,9 @@
-//**********************************************************/
-/* File: uiDeviceUpdateVersion.cpp
+/**********************************************************
+* File: uiDeviceUpdateVersion.cpp
 *  Description: The panel with firmware info
 *
 * \n class uiDeviceUpdateVersion
-//**********************************************************/
+**********************************************************/
 
 #include "uiDeviceUpdateVersion.h"
 
@@ -114,4 +114,4 @@ void uiDeviceUpdateVersion::CreateWidgets()
     Layout();
 
     wxGetApp().UpdateDarkUIWin(this);
-}
+}

src/slic3r/GUI/DeviceTab/uiDeviceUpdateVersion.h

@@ -1,9 +1,9 @@
-//**********************************************************/
-/* File: uiDeviceUpdateVersion.h
+/**********************************************************
+* File: uiDeviceUpdateVersion.h
 *  Description: The panel with firmware info
 * 
 *  \n class uiDeviceUpdateVersion
-//**********************************************************/
+**********************************************************/
 
 #pragma once
 #include <wx/panel.h>
@@ -44,4 +44,4 @@ private:
     wxStaticText*   m_dev_version;
     wxStaticBitmap* m_dev_upgrade_indicator;
 };
-};// end of namespace Slic3r::GUI
+};// end of namespace Slic3r::GUI

src/slic3r/GUI/DownloadProgressDialog.cpp

@@ -26,8 +26,6 @@
 
 #include "Widgets/HyperLink.hpp" // ORCA
 
-#define DESIGN_INPUT_SIZE wxSize(FromDIP(100), -1)
-
 namespace Slic3r {
 namespace GUI {
 

src/slic3r/GUI/Downloader.cpp

@@ -134,7 +134,7 @@ void Downloader::start_download(const std::string& full_url)
     Plater* plater = wxGetApp().plater();
 
     mainframe->Freeze();
-    mainframe->select_tab((size_t)MainFrame::TabPosition::tp3DEditor);
+    mainframe->select_tab(TAB_ID_PREPARE);
     plater->select_view_3D("3D");
     plater->select_view("plate");
     plater->get_current_canvas3D()->zoom_to_bed();

src/slic3r/GUI/Field.cpp

@@ -35,6 +35,7 @@
 #include "Widgets/TextCtrl.h"
 
 #include "../Utils/ColorSpaceConvert.hpp"
+#include "../Utils/NetworkAgentFactory.hpp"
 #ifdef __WXOSX__
 #define wxOSX true
 #else
@@ -330,8 +331,10 @@ void Field::PostInitialize()
                 }
 			    default: break;
 			    }
-			    if (tab_id >= 0)
-					wxGetApp().mainframe->select_tab(tab_id);
+			    if (tab_id >= 0) {
+					static constexpr const char* kShortcutTabIds[] = {TAB_ID_HOME, TAB_ID_PREPARE, TAB_ID_PREVIEW, TAB_ID_MONITOR};
+					wxGetApp().mainframe->select_tab(kShortcutTabIds[tab_id]);
+				}
 				if (tab_id > 0)
 					// tab panel should be focused for correct navigation between tabs
 				    wxGetApp().tab_panel()->SetFocus();
@@ -1403,39 +1406,6 @@ using choice_ctrl = ::ComboBox; // BBS
 
 static std::map<std::string, DynamicList*> dynamic_lists;
 
-static bool is_plugin_printer_agent_key(const std::string& value)
-{
-    return value.rfind("plugin:", 0) == 0;
-}
-
-static int printer_agent_item_for_enum_index(const choice_ctrl* field, int enum_index)
-{
-    if (!field)
-        return -1;
-
-    const unsigned int count = field->GetCount();
-    for (unsigned int idx = 0; idx < count; ++idx) {
-        if (void* data = field->GetClientData(idx)) {
-            const int stored = static_cast<int>(reinterpret_cast<uintptr_t>(data)) - 1;
-            if (stored == enum_index)
-                return static_cast<int>(idx);
-        }
-    }
-
-    return -1;
-}
-
-static int printer_agent_enum_index_for_item(const choice_ctrl* field, int item_index, int fallback)
-{
-    if (!field || item_index < 0)
-        return fallback;
-
-    if (void* data = field->GetClientData(item_index))
-        return static_cast<int>(reinterpret_cast<uintptr_t>(data)) - 1;
-
-    return fallback;
-}
-
 void Choice::register_dynamic_list(std::string const &optname, DynamicList *list) { dynamic_lists.emplace(optname, list); }
 
 void DynamicList::update()
@@ -1518,33 +1488,7 @@ void Choice::BUILD()
 	window = dynamic_cast<wxWindow*>(temp);
 
 	if (! m_opt.enum_labels.empty() || ! m_opt.enum_values.empty()) {
-	    if (m_opt_id == "printer_agent") {
-	        const bool has_builtin_agents = std::any_of(m_opt.enum_values.begin(), m_opt.enum_values.end(),
-	            [](const std::string& value) { return !is_plugin_printer_agent_key(value); });
-	        const bool has_plugin_agents = std::any_of(m_opt.enum_values.begin(), m_opt.enum_values.end(),
-	            [](const std::string& value) { return is_plugin_printer_agent_key(value); });
-
-	        auto append_agent_rows = [this, temp](bool plugins) {
-	            for (size_t i = 0; i < m_opt.enum_values.size(); ++i) {
-	                const bool is_plugin = is_plugin_printer_agent_key(m_opt.enum_values[i]);
-	                if (is_plugin != plugins)
-	                    continue;
-
-	                const wxString label = i < m_opt.enum_labels.size() ? _(m_opt.enum_labels[i]) : wxString(m_opt.enum_values[i]);
-	                const int item = temp->Append(label);
-	                temp->SetClientData(item, reinterpret_cast<void*>(static_cast<uintptr_t>(i + 1)));
-	            }
-	        };
-
-	        if (has_builtin_agents) {
-	            temp->Append(_L("System agents"), wxNullBitmap, DD_ITEM_STYLE_SPLIT_ITEM | DD_ITEM_STYLE_DISABLED);
-	            append_agent_rows(false);
-	        }
-	        if (has_plugin_agents) {
-	            temp->Append(_L("Plugins"), wxNullBitmap, DD_ITEM_STYLE_SPLIT_ITEM | DD_ITEM_STYLE_DISABLED);
-	            append_agent_rows(true);
-	        }
-	    } else if (m_opt.enum_labels.empty()) {
+	    if (m_opt.enum_labels.empty()) {
 			// Append non-localized enum_values
 			for (auto el : m_opt.enum_values)
 				temp->Append(el);
@@ -1651,7 +1595,7 @@ void Choice::set_selection()
 	switch (m_opt.type) {
 	case coEnum:{
         const int val = m_opt.default_value->getInt();
-        field->SetSelection(m_opt_id == "printer_agent" ? printer_agent_item_for_enum_index(field, val) : val);
+        field->SetSelection(val);
 		break;
 	}
 	case coFloat:
@@ -1701,12 +1645,7 @@ void Choice::set_value(const std::string& value, bool change_event)  //! Redunda
 	}
 
 	choice_ctrl* field = dynamic_cast<choice_ctrl*>(window);
-	if (m_opt_id == "printer_agent") {
-		const int enum_index = idx == m_opt.enum_values.size() ?
-			(m_opt.default_value ? m_opt.default_value->getInt() : 0) :
-			static_cast<int>(idx);
-		field->SetSelection(printer_agent_item_for_enum_index(field, enum_index));
-	} else if (idx == m_opt.enum_values.size())
+	if (idx == m_opt.enum_values.size())
 		field->SetValue(value);
 	else
 		field->SetSelection(idx);
@@ -1772,33 +1711,11 @@ void Choice::set_value(const boost::any& value, bool change_event)
 	case coEnum:
     // BBS
 	case coEnums: {
-	    auto printer_agent_index_from_key = [this](const std::string& key) {
-	        auto it = std::find(m_opt.enum_values.begin(), m_opt.enum_values.end(), key);
-	        if (it != m_opt.enum_values.end())
-	            return static_cast<int>(it - m_opt.enum_values.begin());
-	        return m_opt.default_value ? m_opt.default_value->getInt() : 0;
-	    };
-
-	    int val = 0;
-	    if (m_opt_id == "printer_agent") {
-	        if (const int* int_value = boost::any_cast<int>(&value))
-	            val = *int_value;
-	        else if (const wxString* wx_value = boost::any_cast<wxString>(&value))
-	            val = printer_agent_index_from_key(into_u8(*wx_value));
-	        else if (const std::string* string_value = boost::any_cast<std::string>(&value))
-	            val = printer_agent_index_from_key(*string_value);
-	        else {
-	            m_disable_change_event = false;
-	            return;
-	        }
-	    } else
-	        val = boost::any_cast<int>(value);
+	    int val = boost::any_cast<int>(value);
 
 	    int selection = val;
 
-	    if (m_opt_id == "printer_agent") {
-	        selection = printer_agent_item_for_enum_index(field, val);
-	    } else if (m_opt_id == "input_shaping_type") {
+	    if (m_opt_id == "input_shaping_type") {
 	        if (field != nullptr) {
 	            const unsigned int count = field->GetCount();
 	            int match_index = -1;
@@ -1920,12 +1837,6 @@ boost::any& Choice::get_value()
     {
         if (m_opt.nullable && field->GetSelection() == -1)
             m_value = ConfigOptionEnumsGenericNullable::nil_value();
-        else if (m_opt_id == "printer_agent")
-        {
-            const int selection = field->GetSelection();
-            const int fallback = m_opt.default_value ? m_opt.default_value->getInt() : 0;
-            m_value = printer_agent_enum_index_for_item(field, selection, fallback);
-        }
         else if (m_opt_id == "input_shaping_type")
         {
             int selection = field->GetSelection();
@@ -2067,6 +1978,171 @@ void Choice::msw_rescale()
 }
 
 
+// PrinterAgentChoice
+
+void PrinterAgentChoice::reload_rows()
+{
+    auto* combo = dynamic_cast<choice_ctrl*>(window); // wxWidgets ComboBox
+    if (!combo)
+        return;
+
+    // clear ComboBox
+    combo->Clear();
+
+    // helpers
+    const auto agents = NetworkAgentFactory::get_registered_printer_agents();
+    const bool has_builtin_agents = std::any_of(agents.begin(), agents.end(),
+                                                [](const PrinterAgentInfo& a) { return !a.is_plugin(); });
+    const bool has_plugin_agents = std::any_of(agents.begin(), agents.end(),
+                                               [](const PrinterAgentInfo& a) { return a.is_plugin(); });
+
+    auto append_agent_rows = [combo](bool is_plugin)
+    {
+        const auto agents = NetworkAgentFactory::get_registered_printer_agents();
+        for (size_t i = 0; i < agents.size(); ++i)
+        {
+            if (agents[i].is_plugin() != is_plugin)
+                continue;
+            const int item = combo->Append(_(agents[i].display_name));
+            // why: carry the agent-id string on the row. alias is an owned wxString (auto-freed, never rendered)
+            combo->SetItemAlias(item, from_u8(agents[i].id));
+        }
+    };
+
+    // append rows
+    if (has_builtin_agents)
+    {
+        combo->Append(_L("System agents"), wxNullBitmap, DD_ITEM_STYLE_SPLIT_ITEM | DD_ITEM_STYLE_DISABLED);
+        append_agent_rows(false); // append rows for agents that are not plugins
+    }
+    if (has_plugin_agents)
+    {
+        combo->Append(_L("Plugins"), wxNullBitmap, DD_ITEM_STYLE_SPLIT_ITEM | DD_ITEM_STYLE_DISABLED);
+        append_agent_rows(true); // append rows for agents that are plugins
+    }
+}
+
+void PrinterAgentChoice::BUILD()
+{
+    wxSize size(def_width_wider() * m_em_unit, wxDefaultCoord);
+    if (m_opt.height >= 0) size.SetHeight(m_opt.height * m_em_unit);
+    if (m_opt.width >= 0) size.SetWidth(m_opt.width * m_em_unit);
+
+    static Builder<choice_ctrl> builder;
+    choice_ctrl* temp = builder.build(m_parent, wxID_ANY, wxString(""), wxDefaultPosition, size, 0, nullptr,
+                                      wxCB_READONLY);
+    temp->Clear();
+    temp->GetDropDown().SetUseContentWidth(true);
+    if (parent_is_custom_ctrl && m_opt.height < 0)
+        opt_height = (double)temp->GetTextCtrl()->GetSize().GetHeight() / m_em_unit;
+    temp->SetTextLabel(_L(m_opt.sidetext));
+    m_combine_side_text = true;
+#ifdef __WXGTK3__
+    wxSize best_sz = temp->GetBestSize();
+    if (best_sz.x > size.x) temp->SetSize(best_sz);
+#endif
+    if (!wxOSX) temp->SetBackgroundStyle(wxBG_STYLE_PAINT);
+
+    window = dynamic_cast<wxWindow*>(temp);
+
+    reload_rows();
+
+    temp->Bind(wxEVT_COMBOBOX, [this](wxCommandEvent&) { on_change_field(); }, temp->GetId());
+    temp->SetToolTip(get_tooltip_text(temp->GetValue()));
+}
+
+// Resolve CONFIG id string to a matching row in the live REGISTRY. "" uses the vendor default.
+// An unregistered id clears selection and shows "<id> (missing)" as free text.
+void PrinterAgentChoice::set_value(const std::string& value, bool change_event)
+{
+    m_disable_change_event = !change_event;
+
+    auto* field = dynamic_cast<choice_ctrl*>(window);
+
+    // check if any row's corresponding id matches the agent id we are attempting to set
+    const std::string effective_agent_id = wxGetApp().resolve_printer_agent_id(value);
+    const unsigned int count = field->GetCount();
+    int match = wxNOT_FOUND;
+    for (unsigned int i = 0; i < count; ++i)
+    {
+        if (into_u8(field->GetItemAlias(i)) == effective_agent_id) // if alias == id
+        {
+            match = static_cast<int>(i);
+            break;
+        }
+    }
+
+    // based on match or not, set selection and value
+    // - SetSelection and SetValue are UI to manipulate the display of the ComboBox
+    // - SetSelection automatically calls SetValue for the same value
+    // - we can also SetValue separately from SetSelection
+    if (match == wxNOT_FOUND)
+    {
+        field->SetSelection(wxNOT_FOUND); // nothing shows as selected in the dropdown
+        field->SetValue(from_u8(value + " (missing)")); // set a value not in the selection (upper display field)
+    }
+    else
+    {
+        // display name of agent shows both in upper display field and appears selected in dropdown
+        field->SetSelection(match);
+    }
+
+    m_disable_change_event = false;
+}
+
+// Accept boost::any values from callers (usually to OptionsGroup/Field parent classes) and normalize them to an agent id.
+// Then use PrinterAgentChoice::set_value(std::string& value, ...)
+void PrinterAgentChoice::set_value(const boost::any& value, bool change_event)
+{
+    m_disable_change_event = !change_event;
+
+    auto* field = dynamic_cast<choice_ctrl*>(window);
+    if (value.empty())
+    {
+        field->SetValue("");
+        m_value = value;
+        m_disable_change_event = false;
+        return;
+    }
+
+    std::string id;
+    if (const std::string* s = boost::any_cast<std::string>(&value))
+        id = *s;
+    else if (const wxString* w = boost::any_cast<wxString>(&value))
+        id = into_u8(*w);
+    set_value(id, change_event);
+}
+
+// A real row returns its alias, which is the agent id. Header rows, missing rows,
+// and no selection return empty boost::any so the custom writer leaves config unchanged.
+boost::any& PrinterAgentChoice::get_value()
+{
+    auto* field = dynamic_cast<choice_ctrl*>(window);
+    const int sel = field->GetSelection();
+    const std::string id = sel < 0 ? std::string{} : into_u8(field->GetItemAlias(sel));
+    if (id.empty())
+        m_value = boost::any{};
+    else
+        m_value = id;
+    return m_value;
+}
+
+void PrinterAgentChoice::enable() { dynamic_cast<choice_ctrl*>(window)->Enable(); }
+void PrinterAgentChoice::disable() { dynamic_cast<choice_ctrl*>(window)->Disable(); }
+
+void PrinterAgentChoice::msw_rescale()
+{
+    Field::msw_rescale();
+
+    auto* field = dynamic_cast<choice_ctrl*>(window)->GetTextCtrl();
+    wxSize size(wxDefaultSize);
+    size.SetWidth((m_opt.width > 0 ? m_opt.width : def_width_wider()) * m_em_unit);
+    field->SetMinSize(wxSize(-1, int(1.5f * field->GetFont().GetPixelSize().y + 0.5f)));
+    field->SetSize(size);
+
+    dynamic_cast<choice_ctrl*>(window)->Rescale();
+}
+
 void PluginField::BUILD()
 {
     auto* panel = new wxPanel(m_parent, wxID_ANY);

src/slic3r/GUI/Field.hpp

@@ -385,7 +385,7 @@ public:
 	wxWindow*		window{ nullptr };
 	void			BUILD() override;
     /// Propagate value from field to the OptionGroupe and Config after kill_focus/ENTER
-    void	        propagate_value() ;
+    void	        propagate_value() override;
 
     void			set_value(const std::string& value, bool change_event = false) {
 		m_disable_change_event = !change_event;
@@ -440,7 +440,7 @@ public:
 	wxWindow*		window{ nullptr };
 	void			BUILD() override;
 	// Propagate value from field to the OptionGroupe and Config after kill_focus/ENTER
-	void			propagate_value();
+	void			propagate_value() override;
 
     /* Under OSX: wxBitmapComboBox->GetWindowStyle() returns some weard value, 
      * so let use a flag, which has TRUE value for a control without wxCB_READONLY style
@@ -469,6 +469,44 @@ public:
     void            suppress_scroll();
 };
 
+// printer_agent is a coString whose choices come from the live agent registry.
+// PrinterAgentChoice uses a ComboBox directly because Choice expects static config enums.
+// Real rows carry the stored agent id in the row alias (SetItemAlias/GetItemAlias).
+class PrinterAgentChoice : public Field
+{
+	using Field::Field;
+
+public:
+	PrinterAgentChoice(const ConfigOptionDef& opt, const t_config_option_key& id) : Field(opt, id)
+	{
+	}
+
+	PrinterAgentChoice(wxWindow* parent, const ConfigOptionDef& opt, const t_config_option_key& id) : Field(
+		parent, opt, id)
+	{
+	}
+
+	~PrinterAgentChoice()
+	{
+	}
+
+	wxWindow* window{nullptr};
+
+	void BUILD() override;
+	// Clear and repopulate rows from the live registry (grouped System agents / Plugins).
+	// Does not change selection; the caller follows with set_value(stored id).
+	void reload_rows();
+
+	void set_value(const std::string& value, bool change_event = false);
+	void set_value(const boost::any& value, bool change_event = false) override;
+	boost::any& get_value() override;
+
+	void enable() override;
+	void disable() override;
+	void msw_rescale() override;
+	wxWindow* getWindow() override { return window; }
+};
+
 class PluginField : public Field {
     using Field::Field;
 public:

src/slic3r/GUI/GCodeViewer.cpp

@@ -422,7 +422,7 @@ void GCodeViewer::SequentialView::Marker::render_position_window(const libvgcode
         if (properties_shown) {
             float label_w = 0.0f;
             float value_w = 0.0f;
-            properties_rows.reserve(13);
+            properties_rows.reserve(14);
             auto add_row = [&properties_rows, &label_w, &value_w](std::string label, std::string value) {
                  label_w = std::max(label_w, ImGui::CalcTextSize(label.c_str()).x);
                  value_w = std::max(value_w, ImGui::CalcTextSize(value.c_str()).x);
@@ -435,6 +435,27 @@ void GCodeViewer::SequentialView::Marker::render_position_window(const libvgcode
             add_row(_u8L("Width"), buff);
             if (is_extrusion) sprintf(buff, ("%.3f " + _u8L("mm")).c_str(), vertex.height); else strcpy(buff, NA_CSTR);
             add_row(_u8L("Height"), buff);
+            // ORCA: Length of the move ending at the current vertex. Arc moves (G2/G3) are discretized
+            // into several vertices sharing the same gcode line id, so accumulate the whole run to report
+            // the arc length instead of the length of a single chord.
+            if (vertex_id > 0 && (is_extrusion || vertex.is_travel() || vertex.is_wipe())) {
+                const size_t vertices_count = viewer->get_vertices_count();
+                size_t first_id = vertex_id;
+                while (first_id > 0 && viewer->get_vertex_at(first_id - 1).gcode_id == vertex.gcode_id)
+                    --first_id;
+                size_t last_id = vertex_id;
+                while (last_id + 1 < vertices_count && viewer->get_vertex_at(last_id + 1).gcode_id == vertex.gcode_id)
+                    ++last_id;
+                float length = 0.0f;
+                for (size_t i = std::max<size_t>(first_id, 1); i <= last_id; ++i) {
+                    length += (libvgcode::convert(viewer->get_vertex_at(i).position) -
+                               libvgcode::convert(viewer->get_vertex_at(i - 1).position)).norm();
+                }
+                sprintf(buff, ("%.3f " + _u8L("mm")).c_str(), length);
+            }
+            else
+                strcpy(buff, NA_CSTR);
+            add_row(_u8L("Length"), buff);
             sprintf(buff, "%d", vertex.layer_id + 1);
             add_row(_u8L("Layer"), buff);
             sprintf(buff, ("%.1f " + _u8L("mm/s")).c_str(), vertex.feedrate);

src/slic3r/GUI/GLCanvas3D.cpp

@@ -1842,6 +1842,10 @@ void GLCanvas3D::enable_separator_toolbar(bool enable)
     m_separator_toolbar.set_enabled(enable);
 }
 
+bool GLCanvas3D::has_mouse_capture() const {
+    return m_canvas != nullptr && m_canvas->HasCapture();
+}
+
 void GLCanvas3D::zoom_to_bed()
 {
     BoundingBoxf3 box = m_bed.build_volume().bounding_volume();
@@ -2182,7 +2186,7 @@ void GLCanvas3D::render(bool only_init)
 
 	// Negative coordinate means out of the window, likely because the window was deactivated.
 	// In that case the tooltip should be hidden.
-    if (m_mouse.position.x() >= 0. && m_mouse.position.y() >= 0.) {
+    if (m_mouse.position.x() >= 0. && m_mouse.position.y() >= 0. || has_mouse_capture()) { // ORCA continue to capture mouse pos mid drag
         if (tooltip.empty())
             tooltip = m_layers_editing.get_tooltip(*this);
 
@@ -2873,6 +2877,9 @@ void GLCanvas3D::reload_scene(bool refresh_immediately, bool force_full_scene_re
             is_belt_printer = belt_opt->value;
 
         if (wt && !is_belt_printer && (need_wipe_tower || filaments_count > 1) && !wxGetApp().plater()->only_gcode_mode() && !wxGetApp().plater()->is_gcode_3mf()) {
+            // The tower size estimate reads printer- and filament-scope keys, which the print preset
+            // does not carry; built once here rather than per plate.
+            const DynamicPrintConfig full_config = wxGetApp().preset_bundle->full_config();
             for (int plate_id = 0; plate_id < n_plates; plate_id++) {
                 // If print ByObject and there is only one object in the plate, the wipe tower is allowed to be generated.
                 PartPlate* part_plate = ppl.get_plate(plate_id);
@@ -2886,7 +2893,7 @@ void GLCanvas3D::reload_scene(bool refresh_immediately, bool force_full_scene_re
                 float x = dynamic_cast<const ConfigOptionFloats*>(proj_cfg.option("wipe_tower_x"))->get_at(plate_id);
                 float y = dynamic_cast<const ConfigOptionFloats*>(proj_cfg.option("wipe_tower_y"))->get_at(plate_id);
                 float w = dynamic_cast<const ConfigOptionFloat*>(m_config->option("prime_tower_width"))->value;
-                float a = dynamic_cast<const ConfigOptionFloat*>(proj_cfg.option("wipe_tower_rotation_angle"))->value;
+                float a = dynamic_cast<const ConfigOptionFloat*>(m_config->option("wipe_tower_rotation_angle"))->value;
                 // BBS
                 float v = dynamic_cast<const ConfigOptionFloat*>(m_config->option("prime_volume"))->value;
                 Vec3d plate_origin = ppl.get_plate(plate_id)->get_origin();
@@ -2897,51 +2904,26 @@ void GLCanvas3D::reload_scene(bool refresh_immediately, bool force_full_scene_re
                 if (part_plate->get_objects_on_this_plate().empty()) continue;
 
                 float brim_width = print->wipe_tower_data(filaments_count).brim_width;
-                const DynamicPrintConfig &print_cfg   = wxGetApp().preset_bundle->prints.get_edited_preset().config;
                 int nozzle_nums = wxGetApp().preset_bundle->get_printer_extruder_count();
-                Vec3d wipe_tower_size = ppl.get_plate(plate_id)->estimate_wipe_tower_size(print_cfg, w, v, nozzle_nums, 0, false, dynamic_cast<const ConfigOptionBool*>(dconfig.option("enable_wrapping_detection"))->value);
+                Vec3d wipe_tower_size = ppl.get_plate(plate_id)->estimate_wipe_tower_size(full_config, w, v, nozzle_nums, 0, false, dynamic_cast<const ConfigOptionBool*>(dconfig.option("enable_wrapping_detection"))->value);
 
-                {
-                    const float                 margin     = WIPE_TOWER_MARGIN + brim_width;
-                    BoundingBoxf3               plate_bbox = part_plate->get_bounding_box();
-                    BoundingBoxf                plate_bbox_2d(Vec2d(plate_bbox.min(0), plate_bbox.min(1)), Vec2d(plate_bbox.max(0), plate_bbox.max(1)));
-                    const std::vector<Pointfs> &extruder_areas = part_plate->get_extruder_areas();
-                    for (Pointfs points : extruder_areas) {
-                        BoundingBoxf bboxf(points);
-                        plate_bbox_2d.min = plate_bbox_2d.min(0) >= bboxf.min(0) ? plate_bbox_2d.min : bboxf.min;
-                        plate_bbox_2d.max = plate_bbox_2d.max(0) <= bboxf.max(0) ? plate_bbox_2d.max : bboxf.max;
-                    }
-
-                    coordf_t plate_bbox_x_min_local_coord = plate_bbox_2d.min(0) - plate_origin(0);
-                    coordf_t plate_bbox_x_max_local_coord = plate_bbox_2d.max(0) - plate_origin(0);
-                    coordf_t plate_bbox_y_max_local_coord = plate_bbox_2d.max(1) - plate_origin(1);
-
-                    if (!current_print->is_step_done(psWipeTower) || !current_print->wipe_tower_data().wipe_tower_mesh_data) {
-                        // update for wipe tower position
-                        {
-                            int volume_idx_wipe_tower_new = m_volumes.load_wipe_tower_preview(1000 + plate_id, x + plate_origin(0), y + plate_origin(1),
-                                                                                              (float) wipe_tower_size(0), (float) wipe_tower_size(1), (float) wipe_tower_size(2),
-                                                                                              a,
-                                                                                              /*!print->is_step_done(psWipeTower)*/ true, brim_width);
-                            int volume_idx_wipe_tower_old = volume_idxs_wipe_tower_old[plate_id];
-                            if (volume_idx_wipe_tower_old != -1) map_glvolume_old_to_new[volume_idx_wipe_tower_old] = volume_idx_wipe_tower_new;
-                        }
-                    } else {
-                        const float margin                    = 2.f;
-                        auto        tower_bottom = current_print->wipe_tower_data().wipe_tower_mesh_data->bottom;
-                        tower_bottom.translate(scaled(Vec2d{x, y}));
-                        tower_bottom.translate(scaled(Vec2d{plate_origin[0], plate_origin[1]}));
-                        auto tower_bottom_bbox = get_extents(tower_bottom);
-                        BoundingBoxf3 plate_bbox        = wxGetApp().plater()->get_partplate_list().get_plate(plate_id)->get_build_volume(true);
-                        BoundingBox   plate_bbox2d      = BoundingBox(scaled(Vec2f(plate_bbox.min[0], plate_bbox.min[1])), scaled(Vec2f(plate_bbox.max[0], plate_bbox.max[1])));
-                        Vec2f         offset            = WipeTower::move_box_inside_box(tower_bottom_bbox, plate_bbox2d, scaled(margin));
-                        int volume_idx_wipe_tower_new = m_volumes.load_real_wipe_tower_preview(1000 + plate_id, x + plate_origin(0), y + plate_origin(1),
-                                                                                               current_print->wipe_tower_data().wipe_tower_mesh_data->real_wipe_tower_mesh,
-                                                                                               current_print->wipe_tower_data().wipe_tower_mesh_data->real_brim_mesh,
-                                                                                            true,a,/*!print->is_step_done(psWipeTower)*/ true, m_initialized);
-                        int volume_idx_wipe_tower_old = volume_idxs_wipe_tower_old[plate_id];
-                        if (volume_idx_wipe_tower_old != -1) map_glvolume_old_to_new[volume_idx_wipe_tower_old] = volume_idx_wipe_tower_new;
-                    }
+                // The stored position is already clamped onto the bed, by
+                // set_default_wipe_tower_pos_for_plate and again on every drag.
+                if (!current_print->is_step_done(psWipeTower) || !current_print->wipe_tower_data().wipe_tower_mesh_data) {
+                    // update for wipe tower position
+                    int volume_idx_wipe_tower_new = m_volumes.load_wipe_tower_preview(1000 + plate_id, x + plate_origin(0), y + plate_origin(1),
+                                                                                      (float) wipe_tower_size(0), (float) wipe_tower_size(1), (float) wipe_tower_size(2),
+                                                                                      a,
+                                                                                      /*!print->is_step_done(psWipeTower)*/ true, brim_width);
+                    int volume_idx_wipe_tower_old = volume_idxs_wipe_tower_old[plate_id];
+                    if (volume_idx_wipe_tower_old != -1) map_glvolume_old_to_new[volume_idx_wipe_tower_old] = volume_idx_wipe_tower_new;
+                } else {
+                    int volume_idx_wipe_tower_new = m_volumes.load_real_wipe_tower_preview(1000 + plate_id, x + plate_origin(0), y + plate_origin(1),
+                                                                                           current_print->wipe_tower_data().wipe_tower_mesh_data->real_wipe_tower_mesh,
+                                                                                           current_print->wipe_tower_data().wipe_tower_mesh_data->real_brim_mesh,
+                                                                                        true,a,/*!print->is_step_done(psWipeTower)*/ true, m_initialized);
+                    int volume_idx_wipe_tower_old = volume_idxs_wipe_tower_old[plate_id];
+                    if (volume_idx_wipe_tower_old != -1) map_glvolume_old_to_new[volume_idx_wipe_tower_old] = volume_idx_wipe_tower_new;
                 }
             }
         }
@@ -4210,6 +4192,23 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
     // BBS: single snapshot
     Plater::SingleSnapshot single(wxGetApp().plater());
 
+#ifdef __WXMAC__
+    // On macOS, the mouse key state is only present for mouse btn related events such as wxEVT_LEFT_DOWN.
+    // For other events, all buttons are reported as non-pressed, such as window leaving event. This causes
+    // imgui stopped responding if cursor moved out of window, such as
+    // https://github.com/OrcaSlicer/OrcaSlicer/pull/14999#issuecomment-5151344759
+    // We solve this by correcting the state of the event from the actual mouse state querying with `wxGetMouseState()`
+    // so it works like on other platforms.
+    {
+        const auto state = wxGetMouseState();
+        evt.SetLeftDown(state.LeftIsDown());
+        evt.SetMiddleDown(state.MiddleIsDown());
+        evt.SetRightDown(state.RightIsDown());
+        evt.SetAux1Down(state.Aux1IsDown());
+        evt.SetAux2Down(state.Aux2IsDown());
+    }
+#endif
+
 #if ENABLE_RETINA_GL
     const float scale = m_retina_helper->get_scale_factor();
     evt.SetX(evt.GetX() * scale);
@@ -4223,11 +4222,27 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
         // ignore left up events coming from imgui windows and not processed by them
         m_mouse.ignore_left_up = true;
     m_tooltip.set_in_imgui(false);
-    if (imgui->update_mouse_data(evt)) {
+
+    // while a non-ImGui drag is already in progress (gizmo grabber, object move, rectangle selection, layer editing),
+    // don't let ImGui/ImGuizmo claim the event just because the cursor is hovering something like the navigator cube
+    // that incorrectly suppresses the active drag's tooltip and can interrupt its processing. The active drag always takes priority.
+    const bool other_drag_active = m_gizmos.is_dragging() || m_mouse.dragging || m_rectangle_selection.is_dragging() || m_layers_editing.state == LayersEditing::Editing;
+
+    if (imgui->update_mouse_data(evt) && !other_drag_active) {
         if ((evt.LeftDown() || (evt.Moving() && (evt.AltDown() || evt.ShiftDown()))) && m_canvas != nullptr)
             m_canvas->SetFocus();
         m_mouse.position = evt.Leaving() ? Vec2d(-1.0, -1.0) : pos.cast<double>();
         m_tooltip.set_in_imgui(true);
+
+        // ORCA keep tracking mouse position while drag active and cursor not in window bounds
+        const bool imgui_dragging_active = (GImGui != nullptr && ImGui::GetIO().MouseDown[0] && GImGui->ActiveId != 0) || m_navigator_dragging;
+        if (!has_mouse_capture() && imgui_dragging_active)
+            m_canvas->CaptureMouse();
+
+        // release capture as soon as the button goes up
+        if (evt.LeftUp() || evt.MiddleUp() || evt.RightUp())
+            mouse_up_cleanup();
+
         render();
 #ifdef SLIC3R_DEBUG_MOUSE_EVENTS
         printf((format_mouse_event_debug_message(evt) + " - Consumed by ImGUI\n").c_str());
@@ -4324,6 +4339,10 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
             m_main_toolbar.on_mouse(evt2, *this);
         }
 
+        // ORCA keep tracking mouse position while drag active and cursor not in window bounds
+        if (!has_mouse_capture() && evt.LeftIsDown() && m_gizmos.is_dragging())
+            m_canvas->CaptureMouse();
+
         if (evt.LeftUp() || evt.MiddleUp() || evt.RightUp())
             mouse_up_cleanup();
 
@@ -4429,6 +4448,9 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
             // Start editing the layer height.
             m_layers_editing.state = LayersEditing::Editing;
             _perform_layer_editing_action(&evt);
+
+            if (!has_mouse_capture()) // ORCA keep tracking mouse position while drag active and cursor not in window bounds
+                m_canvas->CaptureMouse();
         }
 
         else {
@@ -4442,6 +4464,10 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
                     && m_gizmos.get_current_type() != GLGizmosManager::MmSegmentation
                     && m_gizmos.get_current_type() != GLGizmosManager::FuzzySkin) {
                     m_rectangle_selection.start_dragging(m_mouse.position, evt.ShiftDown() ? GLSelectionRectangle::Select : GLSelectionRectangle::Deselect);
+
+                    if (!has_mouse_capture())  // ORCA keep tracking mouse position while drag active and cursor not in window bounds
+                        m_canvas->CaptureMouse();
+
                     m_dirty = true;
                 }
             }
@@ -4509,6 +4535,9 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
                             m_mouse.drag.start_position_3D = m_mouse.scene_position;
                             m_sequential_print_clearance_first_displacement = true;
                             m_moving = true;
+
+                            if (!has_mouse_capture()) // ORCA keep tracking mouse position while drag active and cursor not in window bounds
+                                m_canvas->CaptureMouse();
                         }
                     }
                 }
@@ -4517,6 +4546,10 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
     }
     else if (evt.Dragging() && evt.LeftIsDown() && m_mouse.drag.move_volume_idx != -1 && m_layers_editing.state == LayersEditing::Unknown) {
         if (m_canvas_type != ECanvasType::CanvasAssembleView) {
+
+            if (!has_mouse_capture()) // ORCA keep tracking mouse position while drag active and cursor not in window bounds
+                m_canvas->CaptureMouse();
+
             if (!m_mouse.drag.move_requires_threshold) {
                 m_mouse.dragging = true;
                 Vec3d cur_pos = m_mouse.drag.start_position_3D;
@@ -4568,6 +4601,10 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
     else if (evt.Dragging() && evt.LeftIsDown() && m_picking_enabled && m_rectangle_selection.is_dragging()) {
         //BBS not in assemble view
         if (m_canvas_type != ECanvasType::CanvasAssembleView) {
+
+            if (!has_mouse_capture()) // ORCA keep tracking mouse position while drag active and cursor not in window bounds
+                m_canvas->CaptureMouse();
+
             m_rectangle_selection.dragging(pos.cast<double>());
             m_dirty = true;
         }
@@ -4577,12 +4614,19 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
 
         if (m_layers_editing.state != LayersEditing::Unknown && layer_editing_object_idx != -1) {
             if (m_layers_editing.state == LayersEditing::Editing) {
+                if (!has_mouse_capture()) // ORCA keep tracking mouse position while drag active and cursor not in window bounds
+                    m_canvas->CaptureMouse();
+
                 _perform_layer_editing_action(&evt);
                 m_mouse.position = pos.cast<double>();
             }
         }
         // do not process the dragging if the left mouse was set down in another canvas
         else if (is_camera_rotate(evt, button_mappings)) {
+
+            if (!has_mouse_capture()) // ORCA keep tracking mouse position while drag active and cursor not in window bounds
+                m_canvas->CaptureMouse();
+
             // Orca: Sphere rotation for painting view
             // if dragging over blank area with left button or other button mapped to rotate, then rotate
             bool middle_or_right_button_used_as_rotate = (evt.MiddleIsDown() && button_mappings[MouseButton::Middle] == MouseAction::Rotation) ||
@@ -4662,6 +4706,10 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
             m_mouse.drag.start_position_3D = Vec3d((double)pos(0), (double)pos(1), 0.0);
         }
         else if (is_camera_pan(evt, button_mappings)) {
+
+            if (!has_mouse_capture()) // ORCA keep tracking mouse position while drag active and cursor not in window bounds
+                m_canvas->CaptureMouse();
+
             // if dragging with right button or if button functions swapped and dragging with left button over blank area then pan
             if (m_mouse.is_start_position_2D_defined()) {
                 // get point in model space at Z = 0
@@ -4726,7 +4774,9 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
                 deselect_all();
         }
         //BBS Select plate in this 3D canvas.
-        else if (evt.LeftUp() && !m_mouse.dragging && m_picking_enabled && !m_hover_plate_idxs.empty() && (m_canvas_type == CanvasView3D) && !is_layers_editing_enabled())
+        // The left up may come from an ImGui window (e.g. a drag started on the gizmo floating window and released over the bed),
+        // in which case it must not be treated as a click on the plate, otherwise the gizmo would be closed (see deselect_all below).
+        else if (evt.LeftUp() && !m_mouse.ignore_left_up && !m_mouse.dragging && m_picking_enabled && !m_hover_plate_idxs.empty() && (m_canvas_type == CanvasView3D) && !is_layers_editing_enabled())
         {
                 int hover_idx = m_hover_plate_idxs.front();
                 wxGetApp().plater()->select_plate_by_hover_id(hover_idx);
@@ -6073,9 +6123,18 @@ void GLCanvas3D::_render_3d_navigator()
 {
     if (!wxGetApp().show_3d_navigator()) {
         m_canvas_toolbar_pos[0] = 0;
+        m_navigator_dragging = false;
         return;
     }
 
+    // Fix stealing capture event from other drag events
+    const bool other_drag_active = !m_navigator_dragging && (m_moving || m_rectangle_selection.is_dragging() || m_gizmos.is_dragging() || m_layers_editing.state == LayersEditing::Editing);
+
+    ImGuiIO& io = ImGui::GetIO();
+    const bool saved_mouse_down0 = io.MouseDown[0];
+    if (other_drag_active)
+        io.MouseDown[0] = false;
+
     ImGuizmo::BeginFrame();
 
     auto& style                                = ImGuizmo::GetStyle();
@@ -6100,7 +6159,6 @@ void GLCanvas3D::_render_3d_navigator()
     sc *= (float) dpi / (float) DPI_DEFAULT;
 #endif // WIN32
 
-    const ImGuiIO& io              = ImGui::GetIO();
     const float viewManipulateLeft = 0;
     const float viewManipulateTop  = io.DisplaySize.y;
     const float camDistance        = 8.f;
@@ -6124,6 +6182,10 @@ void GLCanvas3D::_render_3d_navigator()
                                                  camDistance, ImVec2(viewManipulateLeft, viewManipulateTop - size), ImVec2(size, size),
                                                  0x00101010);
 
+    // Restore the real mouse-down state
+    if (other_drag_active)
+        io.MouseDown[0] = saved_mouse_down0;
+
     if (result.changed) {
         for (unsigned int c = 0; c < 4; ++c) {
             for (unsigned int r = 0; r < 4; ++r) {
@@ -6155,6 +6217,8 @@ void GLCanvas3D::_render_3d_navigator()
 
         request_extra_frame();
     }
+
+    m_navigator_dragging = result.dragging;
 }
 
 #define ENABLE_THUMBNAIL_GENERATOR_DEBUG_OUTPUT 0
@@ -6953,7 +7017,7 @@ void GLCanvas3D::_update_select_plate_toolbar_stats_item(bool force_selected) {
     else
         m_sel_plate_toolbar.show_stats_item = false;
 
-    if (force_selected && m_sel_plate_toolbar.show_stats_item)
+    if (force_selected && m_sel_plate_toolbar.show_stats_item && m_sel_plate_toolbar.m_all_plates_stats_item)
         m_sel_plate_toolbar.m_all_plates_stats_item->selected = true;
 }
 
@@ -9172,7 +9236,7 @@ void GLCanvas3D::_render_imgui_select_plate_toolbar()
                                     view3d_canvas->get_gizmos_manager().reset_all_states(); // close all gizmos
                                     view3d_canvas->reload_scene(true);
                                 }
-                                app.mainframe->select_tab((size_t)MainFrame::TabPosition::tp3DEditor);
+                                app.mainframe->select_tab(TAB_ID_PREPARE);
                             }
                         }
                     });
@@ -9266,8 +9330,12 @@ void GLCanvas3D::_render_imgui_select_plate_toolbar()
 
     //ORCA ImGui::IsWindowHovered() returns false when left_down events on buttons that causes scrollbar disappears for a short time
     auto win_pos = ImGui::GetWindowPos();
-    bool is_win_hovered = ImGui::IsMouseHoveringRect(win_pos, win_pos + ImVec2(window_width + (show_scroll ? scrollbar_size : 0), window_height), !show_scroll); // use non clipped rectangle to reserve clickable area for scrollbar track
-    m_sel_plate_toolbar.is_display_scrollbar = is_win_hovered;
+    bool is_win_hovered = ImGui::IsMouseHoveringRect(win_pos, win_pos + ImVec2(window_width + (show_scroll ? scrollbar_size : 0), window_height), !show_scroll);
+
+    // Also show scrollbar visible and continue to capture mouse position
+    const bool is_scrollbar_active_drag = GImGui != nullptr && ImGui::GetIO().MouseDown[0] && GImGui->ActiveId != 0 && GImGui->ActiveIdWindow == ImGui::GetCurrentWindow();
+
+    m_sel_plate_toolbar.is_display_scrollbar = is_win_hovered || is_scrollbar_active_drag;
 
     imgui.end();
 }
@@ -10593,9 +10661,8 @@ void GLCanvas3D::_set_warning_notification(EWarning warning, bool state)
                         wxString    region = L"en";
                         if (language.find("zh") == 0)
                         	region = L"zh";
-                        // Use the generic dual-nozzle PLA+PETG guide rather than the H2D-specific page
-                        // so the link is relevant for all dual-extrusion printers, not just Bambu H2D. (#12073)
-                        wxGetApp().open_browser_with_warning_dialog(wxString::Format(L"https://wiki.bambulab.com/%s/filament-acc/filament/pla-and-petg-dual-extrusion", region));
+                        // Although this link looks like it's only for the H2D, its guidance is generic.
+                        wxGetApp().open_browser_with_warning_dialog(wxString::Format(L"https://wiki.bambulab.com/%s/filament-acc/filament/h2d-pla-and-petg-mutual-support", region));
                         return false;
                     });
             }
@@ -10729,24 +10796,14 @@ bool GLCanvas3D::is_flushing_matrix_error() {
     if (!Sidebar::should_show_SEMM_buttons())
         return false;
 
+    std::vector<int> plate_extruders = wxGetApp().plater()->get_partplate_list().get_curr_plate()->get_extruders(true);
+    if (plate_extruders.size() < 2)
+        return false;
+
     const auto                &project_config = wxGetApp().preset_bundle->project_config;
     const std::vector<double> &config_matrix  = (project_config.option<ConfigOptionFloats>("flush_volumes_matrix"))->values;
     const std::vector<double> &config_multiplier = (project_config.option<ConfigOptionFloats>("flush_multiplier"))->values;
-
-    for (auto multiplier : config_multiplier) {
-        if (multiplier == 0) return true;
-    }
-
-    int  matrix_len = config_matrix.size() / config_multiplier.size();
-    int  row_len    = std::sqrt(matrix_len);
-    for (int i = 0; i < config_matrix.size(); i++)
-    {
-        int relative_id = i % matrix_len;
-        int row_id      = relative_id / row_len;
-        int col_id      = relative_id % row_len;
-        if (row_id != col_id && config_matrix[i] == 0) return true;
-    }
-    return false;
+    return has_zero_flush_volume_for_used_filaments(config_matrix, config_multiplier, plate_extruders);
 }
 
 bool GLCanvas3D::_is_any_volume_outside() const

src/slic3r/GUI/GLCanvas3D.hpp

@@ -589,6 +589,7 @@ private:
     bool m_toolpath_outside{ false };
     ECursorType m_cursor_type;
     GLSelectionRectangle m_rectangle_selection;
+    bool m_navigator_dragging{ false };
 
     //BBS:add plate related logic
     mutable std::vector<int> m_hover_volume_idxs;
@@ -916,6 +917,7 @@ public:
     void update_volumes_colors_by_extruder();
 
     bool is_dragging() const { return m_gizmos.is_dragging() || m_moving; }
+    bool has_mouse_capture() const;
 
     void render(bool only_init = false);
     bool is_rendering_enabled()
@@ -1117,6 +1119,10 @@ public:
 
     void set_mouse_as_dragging() { m_mouse.dragging = true; }
     bool is_mouse_dragging() const { return m_mouse.dragging; }
+    // True when the current left up event comes from an ImGui window and was not processed by it
+    // (e.g. a drag that started on a gizmo floating window and was released over the 3D scene).
+    // Such a release is the end of an ImGui interaction, not a click on the scene.
+    bool is_mouse_left_up_ignored() const { return m_mouse.ignore_left_up; }
 
     double get_size_proportional_to_max_bed_size(double factor) const;
 

src/slic3r/GUI/GUI.cpp

@@ -18,7 +18,9 @@
 #import <IOKit/pwr_mgt/IOPMLib.h>
 #elif _WIN32
 #define WIN32_LEAN_AND_MEAN
+#ifndef NOMINMAX
 #define NOMINMAX
+#endif
 #include <Windows.h>
 #include "boost/nowide/convert.hpp"
 #endif
@@ -256,18 +258,18 @@ void change_opt_value(DynamicPrintConfig& config, const t_config_option_key& opt
 	}
 }
 
-void show_error(wxWindow* parent, const wxString& message, bool monospaced_font)
+void show_error(wxWindow* parent, const wxString& message, bool has_code_excerpts)
 {
     wxGetApp().CallAfter([=] {
-        ErrorDialog msg(parent, message, monospaced_font);
+        ErrorDialog msg(parent, message, has_code_excerpts);
         msg.ShowModal();
     });
 }
 
-void show_error(wxWindow* parent, const char* message, bool monospaced_font)
+void show_error(wxWindow* parent, const char* message, bool has_code_excerpts)
 {
 	assert(message);
-	show_error(parent, wxString::FromUTF8(message), monospaced_font);
+	show_error(parent, wxString::FromUTF8(message), has_code_excerpts);
 }
 
 void show_error_id(int id, const std::string& message)

src/slic3r/GUI/GUI.hpp

@@ -40,11 +40,11 @@ extern void add_menus(wxMenuBar *menu, int event_preferences_changed, int event_
 // Change option value in config
 void change_opt_value(DynamicPrintConfig& config, const t_config_option_key& opt_key, const boost::any& value, int opt_index = 0);
 
-// If monospaced_font is true, the error message is displayed using html <code><pre></pre></code> tags,
-// so that the code formatting will be preserved. This is useful for reporting errors from the placeholder parser.
-void show_error(wxWindow* parent, const wxString& message, bool monospaced_font = false);
-void show_error(wxWindow* parent, const char* message, bool monospaced_font = false);
-inline void show_error(wxWindow* parent, const std::string& message, bool monospaced_font = false) { show_error(parent, message.c_str(), monospaced_font); }
+// If has_code_excerpts is true, code excerpts (a source line and the caret line below it) render
+// monospaced so the caret aligns. Used for placeholder-parser errors.
+void show_error(wxWindow* parent, const wxString& message, bool has_code_excerpts = false);
+void show_error(wxWindow* parent, const char* message, bool has_code_excerpts = false);
+inline void show_error(wxWindow* parent, const std::string& message, bool has_code_excerpts = false) { show_error(parent, message.c_str(), has_code_excerpts); }
 void show_error_id(int id, const std::string& message);   // For Perl
 void show_info(wxWindow* parent, const wxString& message, const wxString& title = wxString());
 void show_info(wxWindow* parent, const char* message, const char* title = nullptr);

src/slic3r/GUI/GUI_App.cpp

@@ -307,6 +307,20 @@ public:
 #endif // !__APPLE__
         )
     {
+		// Some desktop environments ignore splash screen typed window properties
+		// when running the app through Wayland,resulting in the titlebar being shown 
+		// on the splash screen. The code below creates a client-side window decoration
+		// when running on Wayland and then removes that decoration. This ensures every 
+		// environment correctly targets and removes the titlebar for this screen.
+		#if defined(__WXGTK__)
+	        if (Slic3r::GUI::is_running_on_wayland()) {
+	            GtkWidget *empty = gtk_fixed_new();
+	            gtk_widget_set_size_request(empty, 0, 0);
+	            gtk_window_set_titlebar(GTK_WINDOW(GetHandle()), empty);
+	            gtk_window_set_decorated(GTK_WINDOW(GetHandle()), false);
+	        }
+		#endif
+		
         this->SetPosition(pos);
         this->CenterOnScreen();
 
@@ -799,12 +813,12 @@ void GUI_App::post_init()
             m_open_method = "url";
         } else {
             if (this->init_params->input_gcode) {
-                mainframe->select_tab(size_t(MainFrame::tp3DEditor));
+                mainframe->select_tab(TAB_ID_PREPARE);
                 plater_->select_view_3D("3D");
                 this->plater()->load_gcode(from_u8(this->init_params->input_files.front()));
                 m_open_method = "gcode";
             } else {
-                mainframe->select_tab(size_t(MainFrame::tp3DEditor));
+                mainframe->select_tab(TAB_ID_PREPARE);
                 plater_->select_view_3D("3D");
                 wxArrayString input_files;
                 for (auto& file : this->init_params->input_files) {
@@ -838,7 +852,7 @@ void GUI_App::post_init()
         mainframe->Freeze();
 #endif
         plater_->canvas3D()->enable_render(false);
-        mainframe->select_tab(size_t(MainFrame::tp3DEditor));
+        mainframe->select_tab(TAB_ID_PREPARE);
         plater_->select_view_3D("3D");
         //BBS init the opengl resource here
         if (!plater_->canvas3D()->get_wxglcanvas()->IsShownOnScreen() ||
@@ -876,9 +890,9 @@ void GUI_App::post_init()
             }
         }
         if (is_editor())
-            mainframe->select_tab(size_t(0));
+            mainframe->select_tab(TAB_ID_HOME);
         if (app_config->get("default_page") == "1")
-            mainframe->select_tab(size_t(1));
+            mainframe->select_tab(TAB_ID_PREPARE);
 #ifndef __linux__
         mainframe->Thaw();
 #endif
@@ -1815,10 +1829,10 @@ bool GUI_App::hot_reload_network_plugin()
     wxWindowDisabler disabler;
 
     if (mainframe) {
-        int current_tab = mainframe->m_tabpanel->GetSelection();
-        if (current_tab == MainFrame::TabPosition::tpMonitor) {
+        wxString current_tab = mainframe->m_tabpanel->GetSelectedPageName();
+        if (current_tab == TAB_ID_MONITOR) {
             BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << ": navigating away from Monitor tab before unload";
-            mainframe->m_tabpanel->SetSelection(MainFrame::TabPosition::tp3DEditor);
+            mainframe->m_tabpanel->SelectPageByName(TAB_ID_PREPARE);
         }
     }
 
@@ -2152,7 +2166,6 @@ void GUI_App::init_networking_callbacks()
                     obj->is_tunnel_mqtt = tunnel;
                     obj->command_request_push_all(true);
                     obj->command_get_version();
-                    obj->erase_user_access_code();
                     obj->command_get_access_code();
                     if (m_agent)
                         m_agent->install_device_cert(obj->get_dev_id(), obj->is_lan_mode_printer());
@@ -2202,7 +2215,6 @@ void GUI_App::init_networking_callbacks()
                                 wxString text;
                                 if (msg == "5") {
                                     obj->set_access_code("");
-                                    obj->erase_user_access_code();
                                     text = wxString::Format(_L("Incorrect password"));
                                     wxGetApp().show_dialog(text);
                                 } else {
@@ -2795,16 +2807,68 @@ void GUI_App::init_plugin_gui_wiring()
         });
     };
 
+    // why: a newly loaded plugin only adds a selectable agent
+    // refresh the dropdown and leave the live agent alone
+    auto refresh_printer_agent_dropdown_after_load = [](const std::string&)
+    {
+        if (!wxTheApp)
+            return;
+
+        GUI_App* app = &GUI::wxGetApp();
+        if (app->is_closing())
+            return;
+
+        app->CallAfter([app]
+        {
+            if (!app->is_closing())
+                app->refresh_printer_agent_dropdown();
+        });
+    };
+
+    // why: the unloaded plugin may have been the provider of the live agent
+    // re-run selection, where a now-missing agent will be cleared
+    // refresh dropdown after
+    auto switch_printer_agent_after_unload = [](const std::string&)
+    {
+        if (!wxTheApp)
+            return;
+
+        GUI_App* app = &GUI::wxGetApp();
+        if (app->is_closing())
+            return;
+
+        app->CallAfter([app] {
+            if (app->is_closing())
+                return;
+
+            app->switch_printer_agent();
+            app->refresh_printer_agent_dropdown();
+        });
+    };
+
     plugin_mgr.subscribe_on_unload_callback(PluginHostUi::close_windows_for_plugin);
     plugin_mgr.subscribe_on_load_callback([refresh_plugins_dialog](const std::string&) { refresh_plugins_dialog(); });
     plugin_mgr.subscribe_on_unload_callback([refresh_plugins_dialog](const std::string&) { refresh_plugins_dialog(); });
     plugin_mgr.subscribe_on_load_callback(NetworkAgentFactory::register_python_plugin);
     plugin_mgr.subscribe_on_unload_callback(NetworkAgentFactory::deregister_python_plugin);
+    plugin_mgr.subscribe_on_load_callback([](const std::string& plugin_key) {
+        if (wxTheApp == nullptr || wxGetApp().is_closing() || wxGetApp().mainframe == nullptr)
+            return;
+        wxGetApp().mainframe->plugin_pages().on_plugin_register(plugin_key);
+    });
+    plugin_mgr.subscribe_on_unload_callback([](const std::string& plugin_key) {
+        if (wxTheApp == nullptr || wxGetApp().is_closing() || wxGetApp().mainframe == nullptr)
+            return;
+        wxGetApp().mainframe->plugin_pages().on_plugin_deregister(plugin_key);
+    });
+    plugin_mgr.subscribe_on_load_callback(refresh_printer_agent_dropdown_after_load);
+    plugin_mgr.subscribe_on_unload_callback(switch_printer_agent_after_unload);
     plugin_mgr.subscribe_on_capability_load_callback(
-        [refresh_plugins_dialog](const PluginCapabilityId& capability) {
+        [refresh_plugins_dialog, refresh_printer_agent_dropdown_after_load](const PluginCapabilityId& capability) {
             if (capability.type == PluginCapabilityType::PrinterConnection)
                 NetworkAgentFactory::register_python_printer_agent(capability.plugin_key, capability.name);
             refresh_plugins_dialog();
+            refresh_printer_agent_dropdown_after_load(capability.plugin_key);
             // A newly loaded capability may satisfy a missing-plugin notification; re-validate the
             // current plate (on the UI thread) so the notification clears once its plugin is available.
             if (wxTheApp && !wxGetApp().is_closing())
@@ -2812,12 +2876,17 @@ void GUI_App::init_plugin_gui_wiring()
                     if (Plater* plater = wxGetApp().plater())
                         plater->revalidate_current_plate_if_plugins_missing();
                 });
+            if (capability.type == PluginCapabilityType::Pages && wxTheApp && !wxGetApp().is_closing() && wxGetApp().mainframe)
+                wxGetApp().mainframe->plugin_pages().on_cap_register(capability);
         });
     plugin_mgr.subscribe_on_capability_unload_callback(
-        [refresh_plugins_dialog](const PluginCapabilityId& capability) {
+        [refresh_plugins_dialog, switch_printer_agent_after_unload](const PluginCapabilityId& capability) {
             if (capability.type == PluginCapabilityType::PrinterConnection)
                 NetworkAgentFactory::deregister_python_printer_agent(capability.plugin_key, capability.name);
+            if (capability.type == PluginCapabilityType::Pages && wxTheApp && !wxGetApp().is_closing() && wxGetApp().mainframe)
+                wxGetApp().mainframe->plugin_pages().on_cap_deregister(capability);
             refresh_plugins_dialog();
+            switch_printer_agent_after_unload(capability.plugin_key);
         });
 }
 
@@ -3218,15 +3287,12 @@ bool GUI_App::on_init_inner()
         }
     } */
 
-    copy_network_if_available();
 
     if (scrn) {
         scrn->SetText(_L("Loading Plugins") + dots, 20);
         wxYield();
     }
 
-    on_init_network();
-
     // Initialize plugins after network then register on_load callbacks so once the plugin loads finish, it gets registered automatically.
     // initialize() also installs the libslic3r hooks (capability resolver,
     // slicing-pipeline dispatcher) via plugin_hooks::install() -- no
@@ -3255,6 +3321,9 @@ bool GUI_App::on_init_inner()
         }
     }
 
+    copy_network_if_available();
+    on_init_network();
+
     if (m_agent)
         plugin_mgr.set_cloud_agent(std::dynamic_pointer_cast<OrcaCloudServiceAgent>(m_agent->get_cloud_agent()));
 
@@ -3327,7 +3396,7 @@ bool GUI_App::on_init_inner()
     mainframe = new MainFrame();
     // hide settings tabs after first Layout
     if (is_editor()) {
-        mainframe->select_tab(size_t(0));
+        mainframe->select_tab(TAB_ID_HOME);
     }
 
     sidebar().obj_list()->init();
@@ -3859,6 +3928,54 @@ unsigned GUI_App::get_colour_approx_luma(const wxColour &colour)
         ));
 }
 
+void GUI_App::refresh_printer_agent_dropdown()
+{
+    if (Tab* tab = get_tab(Preset::TYPE_PRINTER))
+    {
+        if (auto* printer_tab = dynamic_cast<TabPrinter*>(tab))
+            printer_tab->refresh_printer_agent_dropdown();
+    }
+}
+
+void GUI_App::set_live_printer_agent(std::shared_ptr<IPrinterAgent> agent)
+{
+    if (!m_agent)
+        return;
+
+    // why: tearing down the old machine selection is only ever the prefix of setting the live
+    // agent (to a new one, or to null when the selection is missing) - so it lives here, not as
+    // a standalone helper. Pass nullptr to clear the selection.
+    if (DeviceManager* dev = getDeviceManager())
+    {
+        dev->set_selected_machine(""); // why: empty id disconnects and deselects the current machine
+        m_agent->set_user_selected_machine("");
+        // note: belt-and-suspenders (precedent: DeviceManagerRefresher::on_timer)
+        dev->OnSelectedMachineLost(); // why: clear stale sidebar sync-status / AMS
+        // why: drop stale LAN discoveries; keep My Devices, but only those belonging to the
+        // agent we're about to swap to, so a device stamped by the outgoing agent doesn't
+        // linger hidden - the new agent's start_discovery re-inserts and re-stamps it fresh.
+        // agent is null when clearing the live agent entirely (e.g. plugin unload); there's no
+        // target to filter against then, so fall back to the original "keep all My Devices"
+        // behavior rather than guessing.
+        dev->clear_other_devices(agent ? agent->get_agent_info().id : std::string());
+    }
+
+    m_agent->set_printer_agent(agent);
+    sidebar().update_all_preset_comboboxes();
+}
+
+std::string GUI_App::resolve_printer_agent_id(const std::string& stored_id)
+{
+    if (!stored_id.empty())
+        return stored_id;
+    return (preset_bundle && preset_bundle->is_bbl_vendor()) ? BBL_PRINTER_AGENT_ID : ORCA_PRINTER_AGENT_ID;
+}
+
+std::string GUI_App::canonical_printer_agent_id(const std::string& picked_id)
+{
+    return picked_id == resolve_printer_agent_id("") ? std::string() : picked_id;
+}
+
 void GUI_App::switch_printer_agent()
 {
     if (!m_agent) {
@@ -3866,24 +3983,17 @@ void GUI_App::switch_printer_agent()
         return;
     }
 
-    // Read printer_agent from config, falling back to default
-    std::string effective_agent_id = ORCA_PRINTER_AGENT_ID;
-    if (preset_bundle->is_bbl_vendor())
-        effective_agent_id = BBL_PRINTER_AGENT_ID;
-
     const DynamicPrintConfig& config = preset_bundle->printers.get_edited_preset().config;
-    if (config.has("printer_agent")) {
-        const std::string& value = config.option<ConfigOptionString>("printer_agent")->value;
-        if (!value.empty())
-            effective_agent_id = value;
-    }
+    const std::string effective_agent_id = resolve_printer_agent_id(config.opt_string("printer_agent"));
 
     // Check if agent is registered
     const PrinterAgentInfo* agent_info_ptr = NetworkAgentFactory::get_printer_agent_info(effective_agent_id);
     if (!agent_info_ptr) {
-        BOOST_LOG_TRIVIAL(warning) << __FUNCTION__ << ": unregistered agent ID '" << effective_agent_id
-                                   << "', keeping current agent";
-        // Keep current agent, don't switch
+        // why: the selected agent's provider is gone (e.g. plugin unloaded); leaving the old
+        // live agent up would keep talking to a machine the user can no longer select.
+        BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << ": agent ID '" << effective_agent_id
+                                << "' is unregistered; clearing live printer agent";
+        set_live_printer_agent(nullptr);
         return;
     }
     const PrinterAgentInfo agent_info = *agent_info_ptr;
@@ -3897,7 +4007,9 @@ void GUI_App::switch_printer_agent()
         NetworkAgentFactory::create_printer_agent_by_id(effective_agent_id, cloud_agent, log_dir);
 
     if (!new_printer_agent) {
-        BOOST_LOG_TRIVIAL(warning) << __FUNCTION__ << ": failed to create agent '" << effective_agent_id << "', keeping current agent";
+        BOOST_LOG_TRIVIAL(warning) << __FUNCTION__ << ": failed to create agent '" << effective_agent_id
+                                   << "'; clearing live printer agent";
+        set_live_printer_agent(nullptr);
         return;
     }
 
@@ -3920,9 +4032,9 @@ void GUI_App::switch_printer_agent()
         return;
     }
 
-    // Swap the agent
-    m_agent->set_printer_agent(new_printer_agent);
-    sidebar().update_all_preset_comboboxes();
+    // Swap the agent; set_live_printer_agent resets the device selection so the new
+    // agent starts clean (#124).
+    set_live_printer_agent(new_printer_agent);
 
     BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << ": printer agent switched to " << effective_agent_id;
 
@@ -4498,7 +4610,7 @@ void GUI_App::recreate_GUI(const wxString &msg_name)
     mainframe = new MainFrame();
     if (is_editor())
         // hide settings tabs after first Layout
-        mainframe->select_tab(size_t(MainFrame::tp3DEditor));
+        mainframe->select_tab(TAB_ID_PREPARE);
     // Propagate model objects to object list.
     sidebar().obj_list()->init();
     //sidebar().aux_list()->init_auxiliary();
@@ -6705,6 +6817,12 @@ void GUI_App::add_pending_vendor_preset(const std::pair<std::string, std::map<st
 
     // Add the corresponding vendor
     std::string vendor_name = PresetBundle::find_preset_vendor(inherits_name, type);
+    if (vendor_name.empty()) {
+        // No vendor ships this preset's parent. An unnamed entry here becomes an
+        // unnamed bundle at install time, which nothing can install.
+        BOOST_LOG_TRIVIAL(warning) << __FUNCTION__ << ": no vendor carries " << inherits_name << ", skipping";
+        return;
+    }
     if (need_add_vendors.find(vendor_name) == need_add_vendors.end())
         need_add_vendors[vendor_name] = std::map<std::string, std::set<std::string>>();
 
@@ -8192,7 +8310,7 @@ bool GUI_App::show_modal_ip_address_enter_dialog(bool input_sn, wxString title)
                 wxGetApp().app_config->save();
 
                 obj->set_dev_ip(ip_address.ToStdString());
-                obj->set_user_access_code(access_code.ToStdString());
+                obj->set_access_code(access_code.ToStdString());
             }
         }
     });
@@ -9757,7 +9875,7 @@ bool GUI_App::check_url_association(std::wstring url_prefix, std::wstring& reg_b
 {
     reg_bin = L"";
 #ifdef WIN32
-    wxRegKey key_full(wxRegKey::HKCU, "Software\\Classes\\" + url_prefix + "\\shell\\open\\command");
+    wxRegKey key_full(wxRegKey::HKCU, L"Software\\Classes\\" + url_prefix + L"\\shell\\open\\command");
     if (!key_full.Exists()) {
         return false;
     }
@@ -9783,8 +9901,8 @@ void GUI_App::associate_url(std::wstring url_prefix)
 
     wxString key_string = "\"" + wbinary + "\" \"%1\"";
 
-    wxRegKey key_first(wxRegKey::HKCU, "Software\\Classes\\" + url_prefix);
-    wxRegKey key_full(wxRegKey::HKCU, "Software\\Classes\\" + url_prefix + "\\shell\\open\\command");
+    wxRegKey key_first(wxRegKey::HKCU, L"Software\\Classes\\" + url_prefix);
+    wxRegKey key_full(wxRegKey::HKCU, L"Software\\Classes\\" + url_prefix + L"\\shell\\open\\command");
     if (!key_first.Exists()) {
         key_first.Create(false);
     }
@@ -9804,7 +9922,7 @@ void GUI_App::disassociate_url(std::wstring url_prefix)
 #ifdef WIN32
     if (is_running_in_msix())
         return;
-    wxRegKey key_full(wxRegKey::HKCU, "Software\\Classes\\" + url_prefix + "\\shell\\open\\command");
+    wxRegKey key_full(wxRegKey::HKCU, L"Software\\Classes\\" + url_prefix + L"\\shell\\open\\command");
     if (!key_full.Exists()) {
         return;
     }

src/slic3r/GUI/GUI_App.hpp

@@ -365,9 +365,14 @@ public:
     HMSQuery* get_hms_query() { return hms_query; }
     NetworkAgent* getAgent() { return m_agent; }
 
-    // Dynamic printer agent switching
+    // Reconcile the live printer agent with the stored preset selection.
     void switch_printer_agent();
 
+    std::string resolve_printer_agent_id(const std::string& stored_id);
+    // ORCA TODO: in the future, bbl presets should specify "bbl" printer agent id
+    // then, all resolve and canonical would just be ORCA<->""
+    std::string canonical_printer_agent_id(const std::string& picked_id);
+
     FilamentColorCodeQuery* get_filament_color_code_query();
     bool is_editor() const { return m_app_mode == EAppMode::Editor; }
     bool is_gcode_viewer() const { return m_app_mode == EAppMode::GCodeViewer; }
@@ -798,6 +803,11 @@ private:
     void            window_pos_center(wxTopLevelWindow *window);
     bool            select_language();
 
+    // Dynamic printer agent selection - internal helpers for switch_printer_agent
+    // and the plugin load/unload callbacks (init_plugin_gui_wiring).
+    void refresh_printer_agent_dropdown();
+    void set_live_printer_agent(std::shared_ptr<IPrinterAgent> agent); // null clears the selection
+
     bool            config_wizard_startup();
 	void            check_updates(const bool verbose);
 

src/slic3r/GUI/GUI_Factories.cpp

@@ -125,6 +125,7 @@ std::map<std::string, std::vector<SimpleSettingData>> SettingsFactory::PART_CATE
        {"sparse_infill_density", "", 1},
        {"fill_multiline", "", 1},
        {"sparse_infill_pattern", "", 1},
+       {"sparse_infill_smooth_factor", "", 1},
        {"lateral_lattice_angle_1", "", 1},
        {"lateral_lattice_angle_2", "", 1},
        {"infill_overhang_angle", "", 1},

src/slic3r/GUI/GUI_ObjectList.cpp

@@ -3213,7 +3213,7 @@ void ObjectList::merge(bool to_multipart_object)
         //changed_object(obj_idx);
         //remove();
     }
-   /* wxGetApp().plater()->load_model_objects(objects);
+   // wxGetApp().plater()->load_model_objects(objects);
 
     Selection& selection = p->view3D->get_canvas3d()->get_selection();
     size_t last_obj_idx = p->model.objects.size() - 1;

src/slic3r/GUI/GUI_ObjectSettings.cpp

@@ -139,7 +139,7 @@ bool ObjectSettings::update_settings_list()
             optgroup->sidetext_width = 5;
 
             optgroup->m_on_change = [this, config](const t_config_option_key& opt_id, const boost::any& value) {
-                                    this->update_config_values(config);
+                                    this->update_config_values(config, opt_id);
                                     wxGetApp().obj_list()->changed_object(); };
 
             // call back for rescaling of the extracolumn control
@@ -325,7 +325,7 @@ bool ObjectSettings::add_missed_options(ModelConfig* config_to, const DynamicPri
     return is_added;
 }
 
-void ObjectSettings::update_config_values(ModelConfig* config)
+void ObjectSettings::update_config_values(ModelConfig* config, const std::string& changed_opt_key)
 {
     const auto objects_model        = wxGetApp().obj_list()->GetModel();
     const auto item                 = wxGetApp().obj_list()->GetSelection();
@@ -403,6 +403,10 @@ void ObjectSettings::update_config_values(ModelConfig* config)
     }
 
     main_config.apply(config->get(), true);
+
+    if (printer_technology == ptFFF && changed_opt_key == "layer_height")
+        config_manipulation.check_layer_height(&main_config);
+
     printer_technology == ptFFF  ?  config_manipulation.update_print_fff_config(&main_config) :
                                     config_manipulation.update_print_sla_config(&main_config) ;
 

src/slic3r/GUI/GUI_ObjectSettings.hpp

@@ -66,7 +66,7 @@ public:
      * we should add sparse_infill_pattern to avoid endless loop in update
      */
     bool        add_missed_options(ModelConfig *config_to, const DynamicPrintConfig &config_from);
-    void        update_config_values(ModelConfig *config);
+    void        update_config_values(ModelConfig *config, const std::string& changed_opt_key = "");
     void        UpdateAndShow(const bool show);
     void        msw_rescale();
     void        sys_color_changed();

src/slic3r/GUI/GUI_ObjectTableSettings.cpp

@@ -223,7 +223,7 @@ bool ObjectTableSettings::update_settings_list(bool is_object, bool is_multiple_
         std::weak_ptr<ConfigOptionsGroup> weak_optgroup(optgroup);
         optgroup->m_on_change = [this, is_object, object, config, group_category](const t_config_option_key &opt_id, const boost::any &value) {
                                     this->m_parent->Freeze();
-                                    this->update_config_values(is_object, object, config, group_category);
+                                    this->update_config_values(is_object, object, config, group_category, opt_id);
                                     wxGetApp().obj_list()->changed_object();
                                     this->m_parent->Thaw();
                                     //update_extra_column_visible_status(optgroup.get(), cat.second, config);
@@ -369,7 +369,7 @@ int ObjectTableSettings::update_extra_column_visible_status(ConfigOptionsGroup*
     return count;
 }
 
-void ObjectTableSettings::update_config_values(bool is_object, ModelObject* object, ModelConfig* config, const std::string& category)
+void ObjectTableSettings::update_config_values(bool is_object, ModelObject* object, ModelConfig* config, const std::string& category, const std::string& changed_opt_key)
 {
     int different_count = 0;
     const auto printer_technology   = wxGetApp().plater()->printer_technology();
@@ -403,6 +403,9 @@ void ObjectTableSettings::update_config_values(bool is_object, ModelObject* obje
 
     config_manipulation.set_is_BBL_Printer(wxGetApp().preset_bundle->is_bbl_vendor());
 
+    if (printer_technology == ptFFF && changed_opt_key == "layer_height")
+        config_manipulation.check_layer_height(&main_config);
+
     printer_technology == ptFFF  ?  config_manipulation.update_print_fff_config(&main_config) :
                                     config_manipulation.update_print_sla_config(&main_config) ;
 

src/slic3r/GUI/GUI_ObjectTableSettings.hpp

@@ -70,7 +70,7 @@ public:
     bool        add_missed_options(ModelConfig *config_to, const DynamicPrintConfig &config_from);
     //return visible count
     int         update_extra_column_visible_status(ConfigOptionsGroup* option_group, const std::vector<SimpleSettingData>& option_keys, ModelConfig* config);
-    void        update_config_values(bool is_object, ModelObject* object, ModelConfig* config, const std::string& category);
+    void        update_config_values(bool is_object, ModelObject* object, ModelConfig* config, const std::string& category, const std::string& changed_opt_key = "");
     void        UpdateAndShow(int row, const bool show, bool is_object, bool is_multiple_selection, ModelObject* object, ModelConfig* config, const std::string& category);
     void        ValueChanged(int row, bool is_object, ModelObject* object, ModelConfig* config, const std::string& category, const std::string& key);
     void        resetAllValues(int row, bool is_object, ModelObject* object, ModelConfig* config, const std::string& category);

src/slic3r/GUI/GUI_Utils.cpp

@@ -548,7 +548,7 @@ void RemoveButtonBorder(wxWindow* win)
     GtkCssProvider* provider = gtk_css_provider_new();
 
     const char* css =
-        "button {"
+        "button, button:hover, button:active, button:focus {"
         "  border: none;"
         "  outline: none;"
         "  box-shadow: none;"
@@ -589,6 +589,58 @@ void RemoveButtonBorder(wxWindow* win)
     );
 #endif
 }
+
+void RemoveInputBorder(wxWindow* win)
+{
+    GtkWidget* widget = win->GetHandle();
+    if (!widget) return;
+
+#if GTK_CHECK_VERSION(3, 0, 0)
+    // GTK3+: use CSS provider
+    GtkCssProvider* provider = gtk_css_provider_new();
+
+    // Target 'entry' and its inner subnodes (like text selection areas)
+    const char* css =
+        "entry, entry text, entry undershoot {"
+        "  border: none;"
+        "  outline: none;"
+        "  box-shadow: none;"
+        "  padding: 0px;"
+        "  margin: 0px;"
+        "  min-height: 0px;"
+        "  min-width: 0px;"
+        "  background: none;"
+        "}";
+
+#if GTK_CHECK_VERSION(4, 0, 0)
+    // GTK4
+    gtk_css_provider_load_from_data(provider, css, -1);
+#else
+    // GTK3
+    gtk_css_provider_load_from_data(provider, css, -1, nullptr);
+#endif
+
+    GtkStyleContext* ctx = gtk_widget_get_style_context(widget);
+    gtk_style_context_add_provider(
+        ctx,
+        GTK_STYLE_PROVIDER(provider),
+        GTK_STYLE_PROVIDER_PRIORITY_USER
+    );
+    g_object_unref(provider);
+
+#else
+    // GTK2: Target the x/y thickness of the entry widget
+    gtk_rc_parse_string(
+        "style \"no-padding-entry\" {"
+        "  xthickness = 0"
+        "  ythickness = 0"
+        "  GtkEntry::inner-border = { 0, 0, 0, 0 }"
+        "  GtkEntry::focus-line-width = 0"
+        "}"
+        "class \"GtkEntry\" style \"no-padding-entry\""
+    );
+#endif
+}
 #endif // __WXGTK__
 
 #ifdef __linux__

src/slic3r/GUI/GUI_Utils.hpp

@@ -113,14 +113,7 @@ public:
         update_dark_ui(this);
 #endif
 
-        // Linux specific issue : get_dpi_for_window(this) still doesn't responce to the Display's scale in new wxWidgets(3.1.3).
-        // So, calculate the m_em_unit value from the font size, as before
-#if !defined(__WXGTK__)
-        m_em_unit = std::max<size_t>(10, 10.0f * m_scale_factor);
-#else
-        // initialize default width_unit according to the width of the one symbol ("m") of the currently active font of this window.
-        m_em_unit = std::max<size_t>(10, this->GetTextExtent("m").x - 1);
-#endif // __WXGTK__
+        update_em_unit();
 
 //        recalc_font();
 
@@ -235,6 +228,19 @@ private:
 //         m_em_unit = metrics.averageWidth;
 //    }
 
+    // update em_unit value for new window font
+    void update_em_unit()
+    {
+        // Linux specific issue : get_dpi_for_window(this) still doesn't responce to the Display's scale in new wxWidgets(3.1.3).
+        // So, calculate the m_em_unit value from the font size, as before
+#if !defined(__WXGTK__)
+        m_em_unit = std::max<size_t>(10, 10.0f * m_scale_factor);
+#else
+        // initialize default width_unit according to the width of the one symbol ("m") of the currently active font of this window.
+        m_em_unit = std::max<size_t>(10, this->GetTextExtent("m").x - 1);
+#endif // __WXGTK__
+    }
+
     // check if new scale is differ from previous
     bool    is_new_scale_factor() const { return fabs(m_scale_factor - m_prev_scale_factor) > 0.001; }
 
@@ -247,8 +253,7 @@ private:
         // set normal application font as a current window font
         m_normal_font = this->GetFont();
 
-        // update em_unit value for new window font
-        m_em_unit = std::max<int>(10, 10.0f * m_scale_factor);
+        update_em_unit();
 
         // rescale missed controls sizes and images
         on_dpi_changed(suggested_rect);
@@ -472,8 +477,9 @@ void dataview_remove_insets(wxDataViewCtrl* dv);
 void staticbox_remove_margin(wxStaticBox* sb);
 #endif
 
-#ifdef __WXGTK3__
-void RemoveButtonBorder(wxWindow* win);
+#ifdef __WXGTK__
+void RemoveButtonBorder(wxWindow* win);   // for wxButton/wxBitmapToggleButton based controls (SwitchButton, CheckBox)
+void RemoveInputBorder(wxWindow* win);    // for TextCtrl based controls (TextInput, ComboBox, SpinInput..)
 #endif
 
 #if defined(__WXOSX__) || defined(__linux__)

src/slic3r/GUI/Gizmos/GLGizmoBase.cpp

@@ -442,7 +442,7 @@ bool GLGizmoBase::use_grabbers(const wxMouseEvent &mouse_event) {
         }
     } else if (m_dragging) {
         // when mouse cursor leave window than finish actual dragging operation
-        bool is_leaving = mouse_event.Leaving();
+        bool is_leaving = mouse_event.Leaving() && !m_parent.has_mouse_capture(); // ORCA keep tracking mouse position while drag active and cursor not in window bounds
         if (mouse_event.Dragging()) {
             Point      mouse_coord(mouse_event.GetX(), mouse_event.GetY());
             auto       ray = m_parent.mouse_ray(mouse_coord);

src/slic3r/GUI/Gizmos/GLGizmoBrimEars.cpp

@@ -15,6 +15,8 @@ static const ColorRGBA DEF_COLOR   = {0.7f, 0.7f, 0.7f, 1.f};
 static const ColorRGBA SELECTED_COLOR = {0.0f, 0.5f, 0.5f, 1.0f};
 static const ColorRGBA ERR_COLOR = {1.0f, 0.3f, 0.3f, 0.5f};
 static const ColorRGBA HOVER_COLOR = {0.7f, 0.7f, 0.7f, 0.5f};
+static constexpr float BRIM_EAR_RADIUS_MIN = 0.1f;
+static constexpr float BRIM_EAR_RADIUS_MAX = 100.f;
 
 static ModelVolume *get_model_volume(const Selection &selection, Model &model)
 {
@@ -41,14 +43,14 @@ GLGizmoBrimEars::GLGizmoBrimEars(GLCanvas3D &parent, const std::string &icon_fil
 
 bool GLGizmoBrimEars::on_init()
 {
-    m_new_point_head_diameter = get_brim_default_radius();
+    m_new_point_head_radius = get_brim_default_radius();
 
     m_shortcut_key = WXK_CONTROL_E;
 
     const wxString ctrl = GUI::shortkey_ctrl_prefix();
     const wxString alt  = GUI::shortkey_alt_prefix();
 
-    m_desc["head_diameter"]         = _L("Head diameter");
+    m_desc["brim_ear_radius"]       = _L("Brim ear radius");
     m_desc["max_angle"]             = _L("Max angle");
     m_desc["detection_radius"]      = _L("Detection radius");
     m_desc["remove"]                = _L("Remove");
@@ -62,7 +64,7 @@ bool GLGizmoBrimEars::on_init()
     m_shortcuts = {
         {_L("Left mouse button"),   _L("Add or Select")},
         {_L("Right mouse button"),  _L("Remove")},
-        {ctrl + _L("Mouse wheel"),  m_desc["head_diameter"]},
+        {ctrl + _L("Mouse wheel"),  m_desc["brim_ear_radius"]},
         {alt + _L("Mouse wheel"),   m_desc["section_view"]},
     };
 
@@ -358,7 +360,7 @@ bool GLGizmoBrimEars::gizmo_event(SLAGizmoEventType action, const Vec2d &mouse_p
         Transform3d             inverse_trsf = volume->get_instance_transformation().get_matrix_no_offset().inverse();
         std::pair<Vec3f, Vec3f> pos_and_normal;
         if (unproject_on_mesh2(mouse_position, pos_and_normal)) {
-            render_hover_point = CacheEntry(BrimPoint(pos_and_normal.first, m_new_point_head_diameter / 2.f), false, (inverse_trsf * m_world_normal).cast<float>(), true);
+            render_hover_point = CacheEntry(BrimPoint(pos_and_normal.first, m_new_point_head_radius), false, (inverse_trsf * m_world_normal).cast<float>(), true);
         } else {
             render_hover_point.reset();
         }
@@ -397,7 +399,7 @@ bool GLGizmoBrimEars::gizmo_event(SLAGizmoEventType action, const Vec2d &mouse_p
                 Vec3d object_pos = trsf.inverse() * world_pos;
                 // brim ear always face up
                 Plater::TakeSnapshot snapshot(wxGetApp().plater(), "Add brim ear");
-                add_point_to_cache(object_pos.cast<float>(), m_new_point_head_diameter / 2.f, false, (inverse_trsf * m_world_normal).cast<float>());
+                add_point_to_cache(object_pos.cast<float>(), m_new_point_head_radius, false, (inverse_trsf * m_world_normal).cast<float>());
                 m_parent.set_as_dirty();
                 m_wait_for_up_event = true;
                 find_single();
@@ -490,9 +492,9 @@ bool GLGizmoBrimEars::gizmo_event(SLAGizmoEventType action, const Vec2d &mouse_p
     // mouse wheel up
     if (action == SLAGizmoEventType::MouseWheelUp) {
         if (control_down) {
-            float initial_value = m_new_point_head_diameter;
+            float initial_value = m_new_point_head_radius;
             begin_radius_change(initial_value);
-            m_new_point_head_diameter = std::min(20., initial_value + 0.1);
+            m_new_point_head_radius = std::min(BRIM_EAR_RADIUS_MAX, initial_value + 0.1f);
             update_cache_radius();
             return true;
         }
@@ -502,9 +504,9 @@ bool GLGizmoBrimEars::gizmo_event(SLAGizmoEventType action, const Vec2d &mouse_p
 
     if (action == SLAGizmoEventType::MouseWheelDown) {
         if (control_down) {
-            float initial_value = m_new_point_head_diameter;
+            float initial_value = m_new_point_head_radius;
             begin_radius_change(initial_value);
-            m_new_point_head_diameter = std::max(5., initial_value - 0.1);
+            m_new_point_head_radius = std::max(BRIM_EAR_RADIUS_MIN, initial_value - 0.1f);
             update_cache_radius();
             return true;
         }
@@ -597,18 +599,18 @@ std::vector<const ConfigOption *> GLGizmoBrimEars::get_config_options(const std:
 
 void GLGizmoBrimEars::begin_radius_change(float initial_value)
 {
-    if (m_old_point_head_diameter == 0.f)
-        m_old_point_head_diameter = initial_value;
+    if (m_old_point_head_radius == 0.f)
+        m_old_point_head_radius = initial_value;
 }
 
 void GLGizmoBrimEars::update_cache_radius()
 {
     if (render_hover_point)
-        render_hover_point->brim_point.head_front_radius = m_new_point_head_diameter / 2.f;
+        render_hover_point->brim_point.head_front_radius = m_new_point_head_radius;
 
     for (auto &cache_entry : m_editing_cache)
         if (cache_entry.selected) {
-            cache_entry.brim_point.head_front_radius = m_new_point_head_diameter / 2.f;
+            cache_entry.brim_point.head_front_radius = m_new_point_head_radius;
             find_single();
             update_model_object();
         }
@@ -617,18 +619,18 @@ void GLGizmoBrimEars::update_cache_radius()
 
 void GLGizmoBrimEars::apply_radius_change()
 {
-    if (m_old_point_head_diameter == 0.f) return;
+    if (m_old_point_head_radius == 0.f) return;
 
     // momentarily restore the old value to take snapshot
     for (auto& cache_entry : m_editing_cache)
         if (cache_entry.selected)
-            cache_entry.brim_point.head_front_radius = m_old_point_head_diameter / 2.f;
-    float backup              = m_new_point_head_diameter;
-    m_new_point_head_diameter = m_old_point_head_diameter;
-    Plater::TakeSnapshot snapshot(wxGetApp().plater(), "Change point head diameter");
-    m_new_point_head_diameter = backup;
+            cache_entry.brim_point.head_front_radius = m_old_point_head_radius;
+    float backup            = m_new_point_head_radius;
+    m_new_point_head_radius = m_old_point_head_radius;
+    Plater::TakeSnapshot snapshot(wxGetApp().plater(), "Change brim ear radius");
+    m_new_point_head_radius = backup;
     update_cache_radius();
-    m_old_point_head_diameter = 0.f;
+    m_old_point_head_radius = 0.f;
 }
 
 void GLGizmoBrimEars::on_render_input_window(float x, float y, float bottom_limit)
@@ -653,7 +655,7 @@ void GLGizmoBrimEars::on_render_input_window(float x, float y, float bottom_limi
                     ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoTitleBar);
 
     float                 space_size      = m_imgui->get_style_scaling() * 8;
-    std::vector<wxString> text_list       = {m_desc["head_diameter"], m_desc["max_angle"], m_desc["detection_radius"], m_desc["clipping_of_view"],
+    std::vector<wxString> text_list       = {m_desc["brim_ear_radius"], m_desc["max_angle"], m_desc["detection_radius"], m_desc["clipping_of_view"],
                                              m_desc["create"], m_desc["remove"]};
     float                 widest_text     = m_imgui->find_widest_text(text_list);
     float                 caption_size    = widest_text + space_size + ImGui::GetStyle().WindowPadding.x;
@@ -680,11 +682,11 @@ void GLGizmoBrimEars::on_render_input_window(float x, float y, float bottom_limi
     //  - keep updating the head radius during sliding so it is continuosly refreshed in 3D scene
     //  - take correct undo/redo snapshot after the user is done with moving the slider
     ImGui::AlignTextToFramePadding();
-    float initial_value = m_new_point_head_diameter;
-    m_imgui->text(m_desc["head_diameter"]);
+    float initial_value = m_new_point_head_radius;
+    m_imgui->text(m_desc["brim_ear_radius"]);
     ImGui::SameLine(caption_size);
     ImGui::PushItemWidth(slider_width);
-    m_imgui->bbl_slider_float_style("##head_diameter", &m_new_point_head_diameter, 5, 20, "%.1f", 1.0f, true);
+    m_imgui->bbl_slider_float_style("##brim_ear_radius", &m_new_point_head_radius, BRIM_EAR_RADIUS_MIN, BRIM_EAR_RADIUS_MAX, "%.1f", 1.0f, true);
     if (m_imgui->get_last_slider_status().clicked) {
         begin_radius_change(initial_value);
     }
@@ -695,7 +697,7 @@ void GLGizmoBrimEars::on_render_input_window(float x, float y, float bottom_limi
     }
     ImGui::SameLine(drag_left_width);
     ImGui::PushItemWidth(1.5 * slider_icon_width);
-    ImGui::BBLDragFloat("##head_diameter_input", &m_new_point_head_diameter, 0.05f, 0.0f, 0.0f, "%.1f");
+    ImGui::BBLDragFloat("##brim_ear_radius_input", &m_new_point_head_radius, 0.05f, BRIM_EAR_RADIUS_MIN, BRIM_EAR_RADIUS_MAX, "%.1f");
 
     ImGui::Separator();
 
@@ -910,9 +912,9 @@ void GLGizmoBrimEars::on_stop_dragging()
     m_point_before_drag = CacheEntry();
 }
 
-void GLGizmoBrimEars::on_load(cereal::BinaryInputArchive &ar) { ar(m_new_point_head_diameter, m_editing_cache, m_selection_empty); }
+void GLGizmoBrimEars::on_load(cereal::BinaryInputArchive &ar) { ar(m_new_point_head_radius, m_editing_cache, m_selection_empty); }
 
-void GLGizmoBrimEars::on_save(cereal::BinaryOutputArchive &ar) const { ar(m_new_point_head_diameter, m_editing_cache, m_selection_empty); }
+void GLGizmoBrimEars::on_save(cereal::BinaryOutputArchive &ar) const { ar(m_new_point_head_radius, m_editing_cache, m_selection_empty); }
 
 void GLGizmoBrimEars::select_point(int i)
 {
@@ -920,11 +922,11 @@ void GLGizmoBrimEars::select_point(int i)
         for (auto &point_and_selection : m_editing_cache) point_and_selection.selected = (i == AllPoints);
         m_selection_empty = (i == NoPoints);
 
-        if (i == AllPoints) m_new_point_head_diameter = m_editing_cache[0].brim_point.head_front_radius * 2.f;
+        if (i == AllPoints) m_new_point_head_radius = m_editing_cache[0].brim_point.head_front_radius;
     } else {
         m_editing_cache[i].selected = true;
         m_selection_empty           = false;
-        m_new_point_head_diameter   = m_editing_cache[i].brim_point.head_front_radius * 2.f;
+        m_new_point_head_radius     = m_editing_cache[i].brim_point.head_front_radius;
     }
 }
 
@@ -1011,8 +1013,7 @@ void GLGizmoBrimEars::auto_generate()
     auto             add_point = [this, &trsf, &normal](const Point &p) {
         Vec3d world_pos  = {float(p.x() * SCALING_FACTOR), float(p.y() * SCALING_FACTOR), -0.0001};
         Vec3d object_pos = trsf.inverse() * world_pos;
-        // m_editing_cache.emplace_back(BrimPoint(object_pos.cast<float>(), m_new_point_head_diameter / 2), false, normal);
-        add_point_to_cache(object_pos.cast<float>(), m_new_point_head_diameter / 2, false, normal);
+        add_point_to_cache(object_pos.cast<float>(), m_new_point_head_radius, false, normal);
     };
     for (const ExPolygon &ex_poly : m_first_layer) {
         Polygon  out_poly   = ex_poly.contour;
@@ -1158,8 +1159,11 @@ void GLGizmoBrimEars::reset_all_pick() { std::map<GLVolume *, std::shared_ptr<Pi
 float GLGizmoBrimEars::get_brim_default_radius() const
 {
     const double              nozzle_diameter = wxGetApp().preset_bundle->printers.get_edited_preset().config.option<ConfigOptionFloats>("nozzle_diameter")->get_at(0);
-    const DynamicPrintConfig &pring_cfg = wxGetApp().preset_bundle->prints.get_edited_preset().config;
-    return pring_cfg.get_abs_value("initial_layer_line_width", nozzle_diameter) * 16.0f;
+    const DynamicPrintConfig &print_cfg = wxGetApp().preset_bundle->prints.get_edited_preset().config;
+    return std::clamp(
+        float(print_cfg.get_abs_value("initial_layer_line_width", nozzle_diameter) * 8.0),
+        BRIM_EAR_RADIUS_MIN,
+        BRIM_EAR_RADIUS_MAX);
 }
 
 ExPolygon GLGizmoBrimEars::make_polygon(BrimPoint point, const Geometry::Transformation &trsf)

src/slic3r/GUI/Gizmos/GLGizmoBrimEars.hpp

@@ -85,7 +85,7 @@ public:
     void update_model_object();
     //ClippingPlane get_sla_clipping_plane() const;
 
-    bool is_selection_rectangle_dragging() const { return m_selection_rectangle.is_dragging(); }
+    bool is_selection_rectangle_dragging() const override { return m_selection_rectangle.is_dragging(); }
 
     bool wants_enter_leave_snapshots() const override { return true; }
     std::string get_gizmo_entering_text() const override { return _u8L("Entering Brim Ears"); }
@@ -98,12 +98,12 @@ private:
 
     void render_points(const Selection& selection);
 
-    float m_new_point_head_diameter;        // Size of a new point.
+    float m_new_point_head_radius;          // Radius of a new point.
     float m_max_angle = 125.f;
     float m_detection_radius = 1.f;
     double m_detection_radius_max = .0f;
     CacheEntry m_point_before_drag;         // undo/redo - so we know what state was edited
-    float m_old_point_head_diameter = 0.;   // the same
+    float m_old_point_head_radius = 0.;     // the same
     mutable std::vector<CacheEntry> m_editing_cache; // a support point and whether it is currently selectedchanges or undo/redo
     std::map<int, CacheEntry> m_single_brim;
     ObjectID m_old_mo_id;

src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp

@@ -566,8 +566,11 @@ bool GLGizmoEmboss::on_mouse_for_translate(const wxMouseEvent &mouse_event)
 
 void GLGizmoEmboss::on_mouse_change_selection(const wxMouseEvent &mouse_event)
 {
-    static bool was_dragging = true;  
-    if ((mouse_event.LeftUp() || mouse_event.RightUp()) && !was_dragging) {
+    static bool was_dragging = true;
+    // The left up may be the end of a drag that started on the gizmo floating window (e.g. selecting
+    // text in the input field). Such a release is not a click on the scene and must not close the gizmo.
+    // (The flag is only set for left up events, so right up behavior is unchanged.)
+    if ((mouse_event.LeftUp() || mouse_event.RightUp()) && !was_dragging && !m_parent.is_mouse_left_up_ignored()) {
         // is hovered volume closest hovered?
         int hovered_idx = m_parent.get_first_hover_volume_idx();
         if (hovered_idx < 0) 

src/slic3r/GUI/Gizmos/GLGizmoMeasure.cpp

@@ -597,7 +597,6 @@ void GLGizmoMeasure::on_render()
         }
     }
     Vec3d  position_on_model;
-    Vec3d  direction_on_model;
     size_t model_facet_idx = -1;
     double closest_hit_distance = std::numeric_limits<double>::max();
     {

src/slic3r/GUI/Gizmos/GLGizmoMeshBoolean.hpp

@@ -75,7 +75,7 @@ protected:
     virtual void on_render() override;
     virtual void on_set_state() override;
     virtual CommonGizmosDataID on_get_requirements() const override;
-    virtual void on_render_input_window(float x, float y, float bottom_limit);
+    virtual void on_render_input_window(float x, float y, float bottom_limit) override;
 
     void on_load(cereal::BinaryInputArchive &ar) override;
     void on_save(cereal::BinaryOutputArchive &ar) const override;

src/slic3r/GUI/Gizmos/GLGizmoMove.hpp

@@ -67,7 +67,7 @@ protected:
     void on_register_raycasters_for_picking() override;
     void on_unregister_raycasters_for_picking() override;
     //BBS: GUI refactor: add object manipulation
-    virtual void on_render_input_window(float x, float y, float bottom_limit);
+    virtual void on_render_input_window(float x, float y, float bottom_limit) override;
 
 private:
     double calc_projection(const UpdateData& data) const;

src/slic3r/GUI/Gizmos/GLGizmoScale.hpp

@@ -89,7 +89,7 @@ protected:
     virtual void on_register_raycasters_for_picking() override;
     virtual void on_unregister_raycasters_for_picking() override;
     //BBS: GUI refactor: add object manipulation
-    virtual void on_render_input_window(float x, float y, float bottom_limit);
+    virtual void on_render_input_window(float x, float y, float bottom_limit) override;
 
 private:
     void render_grabbers_connection(unsigned int id_1, unsigned int id_2, const ColorRGBA& color);

src/slic3r/GUI/HMS.cpp

@@ -1,6 +1,7 @@
 #include "HMS.hpp"
 
 #include "GUI.hpp"
+#include "GUI_App.hpp"
 #include "DeviceManager.hpp"
 #include "DeviceCore/DevManager.h"
 #include "DeviceCore/DevUtil.h"

src/slic3r/GUI/HMS.hpp

@@ -1,7 +1,6 @@
 #ifndef slic3r_HMS_hpp_
 #define slic3r_HMS_hpp_
 
-#include "GUI_App.hpp"
 #include "GUI.hpp"
 #include "I18N.hpp"
 #include "Widgets/Label.hpp"
@@ -11,7 +10,11 @@
 #include "slic3r/Utils/Http.hpp"
 #include "libslic3r/Thread.hpp"
 #include "nlohmann/json.hpp"
+#include <ctime>
 #include <mutex>
+#include <string>
+#include <unordered_map>
+#include <vector>
 
 namespace Slic3r {
 
@@ -26,12 +29,12 @@ namespace GUI {
 class HMSQuery {
 
 protected:
-    std::unordered_map<string, json> m_hms_info_jsons;  // key-> device id type, the first three digits of SN number
-    std::unordered_map<string, json> m_hms_action_jsons;// key-> device id type
+    std::unordered_map<std::string, nlohmann::json> m_hms_info_jsons;  // key-> device id type, the first three digits of SN number
+    std::unordered_map<std::string, nlohmann::json> m_hms_action_jsons;// key-> device id type
     std::unordered_map<wxString, wxImage> m_hms_local_images; // key-> image name
     mutable std::mutex m_hms_mutex;
 
-    std::unordered_map<string, time_t> m_cloud_hms_last_update_time;
+    std::unordered_map<std::string, std::time_t> m_cloud_hms_last_update_time;
 
 public:
     HMSQuery() { }
@@ -61,18 +64,18 @@ private:
     // load hms
     void init_hms_info(const std::string& dev_type_id);
     void copy_from_data_dir_to_local();
-    int  download_hms_related(const std::string& hms_type, const std::string& dev_id_type, json* receive_json);
-    int  load_from_local(const std::string& hms_type, const std::string& dev_id_type, json* receive_json, std::string& version_info);
-    int  save_to_local(std::string lang, std::string hms_type, std::string dev_id_type, json save_json);
+    int  download_hms_related(const std::string& hms_type, const std::string& dev_id_type, nlohmann::json* receive_json);
+    int  load_from_local(const std::string& hms_type, const std::string& dev_id_type, nlohmann::json* receive_json, std::string& version_info);
+    int  save_to_local(std::string lang, std::string hms_type, std::string dev_id_type, nlohmann::json save_json);
     std::string get_hms_file(std::string hms_type, std::string lang = std::string("en"), std::string dev_id_type = "");
 
     // internal query
-    string    get_dev_id_type(const MachineObject* obj) const;
-    wxString _query_hms_msg(const string& dev_id_type, const string& long_error_code, const string& lang_code = std::string("en"));
+    std::string get_dev_id_type(const MachineObject* obj) const;
+    wxString _query_hms_msg(const std::string& dev_id_type, const std::string& long_error_code, const std::string& lang_code = std::string("en"));
 
-    bool     _is_internal_error(const string &dev_id_type, const string &long_error_code, const string &lang_code = std::string("en"));
-    wxString _query_error_msg(const string& dev_id_type, const std::string& long_error_code, const std::string& lang_code = std::string("en"));
-    wxString _query_error_image_action(const string& dev_id_type, const std::string& long_error_code, std::vector<int>& button_action);
+    bool     _is_internal_error(const std::string &dev_id_type, const std::string &long_error_code, const std::string &lang_code = std::string("en"));
+    wxString _query_error_msg(const std::string& dev_id_type, const std::string& long_error_code, const std::string& lang_code = std::string("en"));
+    wxString _query_error_image_action(const std::string& dev_id_type, const std::string& long_error_code, std::vector<int>& button_action);
 };
 
 int get_hms_info_version(std::string &version);
@@ -85,4 +88,4 @@ std::string get_error_message(int error_code);
 }
 
 
-#endif
+#endif

src/slic3r/GUI/IMSlider.cpp

@@ -1733,7 +1733,7 @@ std::string IMSlider::get_label(int tick, LabelType label_type)
         ::sprintf(layer_height, "%.2f", m_values.empty() ? m_label_koef * value : m_values[value]);
         if (label_type == ltHeight) return std::string(layer_height);
         if (label_type == ltHeightWithLayer) {
-            char   buffer[64];
+            char   buffer[90];
             size_t layer_number;
             layer_number = m_draw_mode == dmSequentialFffPrint ? (m_values.empty() ? value : value + 1) : m_is_wipe_tower ? get_layer_number(value, label_type) + 1 : (m_values.empty() ? value : value + 1);
             ::sprintf(buffer, "%5s\n%5s", std::to_string(layer_number).c_str(), layer_height);

src/slic3r/GUI/ImGuiWrapper.cpp

@@ -2809,12 +2809,26 @@ void ImGuiWrapper::init_font(bool compress)
         }
     }
 
+    if (m_glyph_ranges == ImGui::GetIO().Fonts->GetGlyphRangesThai()) {
+        ImFontConfig fallback_cfg = cfg;
+        fallback_cfg.MergeMode = true;
+        static constexpr ImWchar celsius_range[] = { 0x2103, 0x2103, 0 };
+        io.Fonts->AddFontFromFileTTF((Slic3r::resources_dir() + "/fonts/HarmonyOS_Sans_SC_Regular.ttf").c_str(), m_font_size, &fallback_cfg, celsius_range);
+    }
+
     bold_font        = io.Fonts->AddFontFromFileTTF((Slic3r::resources_dir() + "/fonts/" + font_name_bold).c_str(), m_font_size, &cfg, ranges.Data);
     if (bold_font == nullptr) {
         bold_font = io.Fonts->AddFontDefault();
         if (bold_font == nullptr) { throw Slic3r::RuntimeError("ImGui: Could not load deafult font"); }
     }
 
+    if (m_glyph_ranges == ImGui::GetIO().Fonts->GetGlyphRangesThai()) {
+        ImFontConfig fallback_cfg = cfg;
+        fallback_cfg.MergeMode = true;
+        static constexpr ImWchar celsius_range[] = { 0x2103, 0x2103, 0 };
+        io.Fonts->AddFontFromFileTTF((Slic3r::resources_dir() + "/fonts/HarmonyOS_Sans_SC_Bold.ttf").c_str(), m_font_size, &fallback_cfg, celsius_range);
+    }
+
     if (m_glyph_ranges == ImGui::GetIO().Fonts->GetGlyphRangesThai()) {
         default_font->Scale *= 1.25f;
         bold_font->Scale *= 1.25f;
@@ -3318,8 +3332,9 @@ const char* ImGuiWrapper::clipboard_get(void* user_data)
             wxTextDataObject data;
             wxTheClipboard->GetData(data);
 
-            if (data.GetTextLength() > 0) {
-                self->m_clipboard_text = into_u8(data.GetText());
+            const wxString text = data.GetText();
+            if (text.Length() > 0) {
+                self->m_clipboard_text = into_u8(text);
                 res = self->m_clipboard_text.c_str();
             }
         }

src/slic3r/GUI/Jobs/CreateFontStyleImagesJob.cpp

@@ -45,24 +45,26 @@ void CreateFontStyleImagesJob::process(Ctl &ctl)
         for (const ExPolygon &shape : shapes)
             bounding_box.merge(BoundingBox(shape.contour.points));
         for (ExPolygon &shape : shapes) shape.translate(-bounding_box.min);
-        
-        // calculate conversion from FontPoint to screen pixels by size of font
-        double scale = get_text_shape_scale(item.prop, *item.font.font_file) * m_input.ppm;
-        scales[index] = scale;
 
-        //double scale = font_prop.size_in_mm * SCALING_FACTOR;
-        BoundingBoxf bb2(bounding_box.min.cast<double>(),
-                         bounding_box.max.cast<double>());
+        if (bounding_box.size().x() < 1 || bounding_box.size().y() < 1)
+            continue; // or however the font job's degenerate-box case is handled
+
+        // Normalize to fit max_size, exactly like CreateFontImageJob does against m_input.size.
+        // Fit by height (matches row height), then clamp width if needed.
+        constexpr float preview_padding_px = 2.f; // margin for AA sampling, tune to your AA kernel radius
+
+        double scale = m_input.max_size.y() / (double) bounding_box.size().y();
+        BoundingBoxf bb2(bounding_box.min.cast<double>(), bounding_box.max.cast<double>());
         bb2.scale(scale);
-        image.tex_size.x = std::ceil(bb2.max.x() - bb2.min.x());
-        image.tex_size.y = std::ceil(bb2.max.y() - bb2.min.y());
 
-        // crop image width
-        if (image.tex_size.x > m_input.max_size.x()) 
+        // crop width only if the (now height-normalized) text is too wide
+        image.tex_size.x = std::ceil(bb2.max.x() - bb2.min.x()) + 2 * preview_padding_px;
+        image.tex_size.y = std::ceil(bb2.max.y() - bb2.min.y()) + 2 * preview_padding_px;
+
+        if (image.tex_size.x > m_input.max_size.x())
             image.tex_size.x = m_input.max_size.x();
-        // crop image height
-        if (image.tex_size.y > m_input.max_size.y())
-            image.tex_size.y = m_input.max_size.y();
+
+        scales[index] = scale;
     }
 
     // arrange bounding boxes

src/slic3r/GUI/Jobs/OrientJob.cpp

@@ -149,6 +149,46 @@ void OrientJob::prepare()
     }
 }
 
+/// parameters to minimize support area
+static void setMinimalSupportAreaPrams(Slic3r::orientation::OrientParams &out)
+{
+    out.TAR_A               = 0.015f;
+    out.TAR_B               = 0.177f;
+    out.RELATIVE_F          = 20;
+    out.CONTOUR_F           = 0.5f;
+    out.BOTTOM_F            = 2.5f;
+    out.BOTTOM_HULL_F       = 0.1f;
+    out.TAR_C               = 0.1f;
+    out.TAR_D               = 1;
+    out.TAR_E               = 0.0115f;
+    out.FIRST_LAY_H         = 0.2f;      // 0.0475;
+    out.VECTOR_TOL          = -0.00083f;
+    out.NEGL_FACE_SIZE      = 0.01f;
+    out.ASCENT              = -0.5f;
+    out.PLAFOND_ADV         = 0.0599f;
+    out.CONTOUR_AMOUNT      = 0.0182427f;
+    out.OV_H                = 2.574f;
+    out.height_offset       = 2.3728f;
+    out.height_log          = 0.041375f;
+    out.height_log_k        = 1.9325457f;
+    out.LAF_MAX             = 0.999f;    // cos(1.4\degree) for low angle face 0.9997f
+    out.LAF_MIN             = 0.97f;     // cos(14\degree) 0.9703f
+    out.TAR_LAF             = 0.001f;    // 0.01f
+    out.TAR_PROJ_AREA       = 0.1f;
+    out.BOTTOM_MIN          = 0.1f;      // min bottom area. If lower than it the object may be unstable
+    out.BOTTOM_MAX          = 2000;      // max bottom area. If get to it the object is stable enough (further increase bottom area won't do more help)
+    out.height_to_bottom_hull_ratio_MIN = 1,
+    out.BOTTOM_HULL_MAX     = 2000;      // max bottom hull area
+    out.APPERANCE_FACE_SUPP = 3;         // penalty of generating supports on appearance face
+    out.overhang_angle      = 60.f;
+    out.use_low_angle_face  = true;
+    out.min_volume          = false;
+    out.fun_dir             = {};
+    out.parallel            = true;
+    out.progressind         = {};
+    out.stopcondition       = {};
+}
+
 void OrientJob::process(Ctl &ctl)
 {
     static const auto arrangestr = _u8L("Orienting...");
@@ -161,9 +201,8 @@ void OrientJob::process(Ctl &ctl)
     const GLCanvas3D::OrientSettings& settings = m_plater->canvas3D()->get_orient_settings();
 
     orientation::OrientParams params;
-    orientation::OrientParamsArea params_area;
     if (settings.min_area) {
-        memcpy(&params, &params_area, sizeof(params));
+        setMinimalSupportAreaPrams(params);
         params.min_volume = false;
     }
     else {

src/slic3r/GUI/MainFrame.cpp

@@ -493,9 +493,8 @@ DPIFrame(NULL, wxID_ANY, "", wxDefaultPosition, wxDefaultSize, BORDERLESS_FRAME_
     });
 
     //BBS
-    Bind(EVT_SELECT_TAB, [this](wxCommandEvent&evt) {
-        TabPosition pos = (TabPosition)evt.GetInt();
-        m_tabpanel->SetSelection(pos);
+    Bind(EVT_SELECT_TAB, [this](wxCommandEvent& evt) {
+        m_tabpanel->SelectPageByName(evt.GetString());
     });
 
     Bind(EVT_SYNC_CLOUD_PRESET, &MainFrame::on_select_default_preset, this);
@@ -702,13 +701,13 @@ DPIFrame(NULL, wxID_ANY, "", wxDefaultPosition, wxDefaultSize, BORDERLESS_FRAME_
             }
             return;}
 #endif
-        if (evt.CmdDown() && evt.GetKeyCode() == 'R') { if (m_slice_enable) { wxGetApp().plater()->update(true, true); wxPostEvent(m_plater, SimpleEvent(EVT_GLTOOLBAR_SLICE_PLATE)); this->m_tabpanel->SetSelection(tpPreview); } return; }
+        if (evt.CmdDown() && evt.GetKeyCode() == 'R') { if (m_slice_enable) { wxGetApp().plater()->update(true, true); wxPostEvent(m_plater, SimpleEvent(EVT_GLTOOLBAR_SLICE_PLATE)); this->m_tabpanel->SelectPageByName(TAB_ID_PREVIEW); } return; }
         if (evt.CmdDown() && evt.ShiftDown() && evt.GetKeyCode() == 'G') {
             m_plater->apply_background_progress();
             m_print_enable = get_enable_print_status();
             m_print_btn->Enable(m_print_enable);
             if (m_print_enable) {
-                if (wxGetApp().preset_bundle->use_bbl_network())
+                if (wxGetApp().preset_bundle->use_bbl_network() || wxGetApp().app_config->get_bool("use_printer_agents"))
                     wxPostEvent(m_plater, SimpleEvent(EVT_GLTOOLBAR_PRINT_PLATE));
                 else
                     wxPostEvent(m_plater, SimpleEvent(EVT_GLTOOLBAR_SEND_GCODE));
@@ -723,7 +722,7 @@ DPIFrame(NULL, wxID_ANY, "", wxDefaultPosition, wxDefaultSize, BORDERLESS_FRAME_
         if (evt.CmdDown() && evt.ShiftDown() && evt.GetKeyCode() == 'S') { if (can_save_as()) m_plater->save_project(true); return;}
         else if (evt.CmdDown() && evt.GetKeyCode() == 'S') { if (can_save()) m_plater->save_project(); return;}
         if (evt.CmdDown() && evt.GetKeyCode() == 'F') {
-            if (m_plater && (m_tabpanel->GetSelection() == TabPosition::tp3DEditor || m_tabpanel->GetSelection() == TabPosition::tpPreview)) {
+            if (m_plater && is_prepare_or_preview_tab()) {
                 m_plater->sidebar().can_search();
             }
         }
@@ -1007,8 +1006,8 @@ void MainFrame::update_layout()
     m_layout = layout;
 
     // From the very beginning the Print settings should be selected
-    //m_last_selected_tab = m_layout == ESettingsLayout::Dlg ? 0 : 1;
-    m_last_selected_tab = 1;
+    //m_last_selected_tab = m_layout == ESettingsLayout::Dlg ? TAB_ID_HOME : TAB_ID_PREPARE;
+    m_last_selected_tab = TAB_ID_PREPARE;
 
     // Set new settings
     switch (m_layout)
@@ -1016,14 +1015,18 @@ void MainFrame::update_layout()
     case ESettingsLayout::Old:
     {
         m_plater->Reparent(m_tabpanel);
-        m_tabpanel->InsertPage(tp3DEditor, m_plater, _L("Prepare"), std::string("tab_3d_active"), std::string("tab_3d_active"), false);
-        m_tabpanel->InsertPage(tpPreview, m_plater, _L("Preview"), std::string("tab_preview_active"), std::string("tab_preview_active"), false);
+        // Right after Home — or first, when there is no Home tab (PositionAfter() would
+        // append instead, and by now the other built-in tabs are already in place).
+        const int home_idx = m_tabpanel->FindPageByName(TAB_ID_HOME);
+        const size_t prepare_pos = (home_idx == wxNOT_FOUND) ? 0 : static_cast<size_t>(home_idx) + 1;
+        m_tabpanel->InsertPage(prepare_pos, TAB_ID_PREPARE, m_plater, _L("Prepare"), "tab_3d_active");
+        m_tabpanel->InsertPage(prepare_pos + 1, TAB_ID_PREVIEW, m_plater, _L("Preview"), "tab_preview_active");
         m_main_sizer->Add(m_tabpanel, 1, wxEXPAND | wxTOP, 0);
 
         m_tabpanel->Bind(wxCUSTOMEVT_NOTEBOOK_SEL_CHANGED, [this](wxCommandEvent& evt)
         {
             // jump to 3deditor under preview_only mode
-            if (evt.GetId() == tp3DEditor){
+            if (evt.GetId() == m_tabpanel->FindPageByName(TAB_ID_PREPARE)) {
                 Sidebar& sidebar = GUI::wxGetApp().sidebar();
                 if (sidebar.need_auto_sync_after_connect_printer()) {
                     sidebar.set_need_auto_sync_after_connect_printer(false);
@@ -1107,6 +1110,9 @@ void MainFrame::update_edge_panels()
 void MainFrame::shutdown()
 {
     BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << "MainFrame::shutdown enter";
+    if (m_project != nullptr)
+        m_project->shutdown();
+    m_plugin_pages.shutdown();
 #ifdef __WXGTK__
     // Edge panels are child windows — wxWidgets destroys them automatically.
     m_edge_bottom = nullptr;
@@ -1252,15 +1258,14 @@ void MainFrame::init_tabpanel() {
 #endif
         //BBS
         wxWindow* panel = m_tabpanel->GetCurrentPage();
-        int sel = m_tabpanel->GetSelection();
         //wxString page_text = m_tabpanel->GetPageText(sel);
-        m_last_selected_tab = m_tabpanel->GetSelection();
+        m_last_selected_tab = m_tabpanel->GetSelectedPageName();
         if (panel == m_plater) {
-            if (sel == tp3DEditor) {
+            if (m_last_selected_tab == TAB_ID_PREPARE) {
                 wxPostEvent(m_plater, SimpleEvent(EVT_GLVIEWTOOLBAR_3D));
                 m_param_panel->OnActivate();
             }
-            else if (sel == tpPreview) {
+            else if (m_last_selected_tab == TAB_ID_PREVIEW) {
                 m_plater->reset_check_status();
                 if (!m_plater->check_ams_status(m_slice_select == eSliceAll))
                     return;
@@ -1275,7 +1280,7 @@ void MainFrame::init_tabpanel() {
             //monitor
         }
 #ifndef __APPLE__
-        if (sel == tp3DEditor) {
+        if (m_last_selected_tab == TAB_ID_PREPARE) {
             m_topbar->EnableUndoRedoItems();
         }
         else {
@@ -1285,34 +1290,16 @@ void MainFrame::init_tabpanel() {
 
         if (panel)
             panel->SetFocus();
-
-        /*switch (sel) {
-        case TabPosition::tpHome:
-            show_option(false);
-            break;
-        case TabPosition::tp3DEditor:
-            show_option(true);
-            break;
-        case TabPosition::tpPreview:
-            show_option(true);
-            break;
-        case TabPosition::tpMonitor:
-            show_option(false);
-            break;
-        default:
-            show_option(false);
-            break;
-        }*/
     });
 
     if (wxGetApp().is_editor()) {
         m_webview         = new WebViewPanel(m_tabpanel);
         Bind(EVT_LOAD_URL, [this](wxCommandEvent &evt) {
             wxString url = evt.GetString();
-            select_tab(MainFrame::tpHome);
+            select_tab(TAB_ID_HOME);
             m_webview->load_url(url);
         });
-        m_tabpanel->AddPage(m_webview, "", "tab_home_active", "tab_home_active", false);
+        m_tabpanel->AddPage(TAB_ID_HOME, m_webview, "", "tab_home_active");
         m_param_panel = new ParamsPanel(m_tabpanel, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxBK_LEFT | wxTAB_TRAVERSAL);
     }
 
@@ -1327,7 +1314,7 @@ void MainFrame::init_tabpanel() {
         //BBS add pages
     m_monitor = new MonitorPanel(m_tabpanel, wxID_ANY, wxDefaultPosition, wxDefaultSize);
     m_monitor->SetBackgroundColour(*wxWHITE);
-    m_tabpanel->AddPage(m_monitor, _L("Device"), std::string("tab_monitor_active"), std::string("tab_monitor_active"), false);
+    m_tabpanel->AddPage(TAB_ID_MONITOR, m_monitor, _L("Device"), "tab_monitor_active");
 
     m_printer_view = new PrinterWebView(m_tabpanel);
     Bind(EVT_LOAD_PRINTER_URL, [this](LoadPrinterViewEvent &evt) {
@@ -1342,16 +1329,20 @@ void MainFrame::init_tabpanel() {
         m_multi_machine = new MultiMachinePage(m_tabpanel, wxID_ANY, wxDefaultPosition, wxDefaultSize);
         m_multi_machine->SetBackgroundColour(*wxWHITE);
         // TODO: change the bitmap
-        m_tabpanel->AddPage(m_multi_machine, _L("Multi-device"), std::string("tab_multi_active"), std::string("tab_multi_active"), false);
+        m_tabpanel->AddPage(TAB_ID_MULTI_DEVICE, m_multi_machine, _L("Multi-device"), "tab_multi_active");
     }
 
     m_project = new ProjectPanel(m_tabpanel, wxID_ANY, wxDefaultPosition, wxDefaultSize);
     m_project->SetBackgroundColour(*wxWHITE);
-    m_tabpanel->AddPage(m_project, _L("Project"), std::string("tab_auxiliary_active"), std::string("tab_auxiliary_active"), false);
+    m_tabpanel->AddPage(TAB_ID_PROJECT, m_project, _L("Project"), "tab_auxiliary_active");
 
     m_calibration = new CalibrationPanel(m_tabpanel, wxID_ANY, wxDefaultPosition, wxDefaultSize);
     m_calibration->SetBackgroundColour(*wxWHITE);
-    m_tabpanel->AddPage(m_calibration, _L("Calibration"), std::string("tab_calibration_active"), std::string("tab_calibration_active"), false);
+    m_tabpanel->AddPage(TAB_ID_CALIBRATION, m_calibration, _L("Calibration"), "tab_calibration_active");
+
+    // Plugin pages are appended after the built-in tabs; their ids are namespaced
+    // (plugin.<plugin_key>.<name>) so they can't collide with the built-in TAB_ID_* constants.
+    m_plugin_pages.initialize(m_tabpanel);
 
     if (m_plater) {
         // load initial config
@@ -1368,9 +1359,97 @@ void MainFrame::init_tabpanel() {
 }
 
 // SoftFever
-void MainFrame::show_device(bool bBBLPrinter) {
+void MainFrame::show_device(bool should_use_native) {
     auto idx = -1;
-    if (bBBLPrinter) {
+
+    const bool use_printer_agents = wxGetApp().app_config->get_bool("use_printer_agents");
+
+    // The web Device page is the extra tab printer-agents mode shows alongside the native one.
+    // Printers that drive the native Bambu device tab have nothing to put in it, so they don't
+    // get it — otherwise a Bambu user sees two Device tabs, one of them permanently empty.
+    const bool want_web_device_tab = use_printer_agents && wxGetApp().preset_bundle != nullptr &&
+                                     !wxGetApp().preset_bundle->use_bbl_device_tab();
+
+    // Remove the extra page before switching to any layout that shouldn't have it.
+    if (!want_web_device_tab) {
+        if ((idx = m_tabpanel->FindPageByName(TAB_ID_MONITOR_WEB)) != wxNOT_FOUND) {
+            m_printer_view->Show(false);
+            m_tabpanel->RemovePage(idx);
+        }
+    }
+
+    if (use_printer_agents) {
+        if (!m_monitor) {
+            m_monitor = new MonitorPanel(m_tabpanel, wxID_ANY, wxDefaultPosition, wxDefaultSize);
+            m_monitor->SetBackgroundColour(*wxWHITE);
+        }
+
+        if (m_tabpanel->FindPage(m_monitor) == wxNOT_FOUND) {
+            if ((idx = m_tabpanel->FindPage(m_printer_view)) != wxNOT_FOUND) {
+                m_printer_view->Show(false);
+                m_tabpanel->RemovePage(idx);
+            }
+            m_monitor->Show(false);
+            m_tabpanel->InsertPage(m_tabpanel->PositionAfter({TAB_ID_PREVIEW}), TAB_ID_MONITOR, m_monitor,
+                                   _L("Device"), "tab_monitor_active");
+        }
+
+        if (m_printer_view == nullptr) {
+            m_printer_view = new PrinterWebView(m_tabpanel);
+            Bind(EVT_LOAD_PRINTER_URL, [this](LoadPrinterViewEvent& evt) {
+                wxString url = evt.GetString();
+                wxString key = evt.GetAPIkey();
+                // select_tab(MainFrame::tpMonitor);
+                m_printer_view->load_url(url, key);
+            });
+        }
+
+        if (wxGetApp().is_enable_multi_machine()) {
+            if (!m_multi_machine) {
+                m_multi_machine = new MultiMachinePage(m_tabpanel, wxID_ANY, wxDefaultPosition, wxDefaultSize);
+                m_multi_machine->SetBackgroundColour(*wxWHITE);
+            }
+            // TODO: change the bitmap
+            if (m_tabpanel->FindPage(m_multi_machine) == wxNOT_FOUND) {
+                m_multi_machine->Show(false);
+                // Past the web Device tab when it is already there, so enabling multi-machine
+                // later can't wedge this page between the two Device tabs.
+                m_tabpanel->InsertPage(m_tabpanel->PositionAfter({TAB_ID_MONITOR_WEB, TAB_ID_MONITOR}),
+                                       TAB_ID_MULTI_DEVICE, m_multi_machine, _L("Multi-device"), "tab_multi_active");
+            }
+        }
+        if (!m_calibration) {
+            m_calibration = new CalibrationPanel(m_tabpanel, wxID_ANY, wxDefaultPosition, wxDefaultSize);
+            m_calibration->SetBackgroundColour(*wxWHITE);
+        }
+        if (m_tabpanel->FindPage(m_calibration) == wxNOT_FOUND) {
+            m_calibration->Show(false);
+            m_tabpanel->InsertPage(m_tabpanel->PositionAfter({TAB_ID_PROJECT}), TAB_ID_CALIBRATION, m_calibration,
+                                   _L("Calibration"), "tab_calibration_active");
+        }
+
+        if (want_web_device_tab) {
+            if ((idx = m_tabpanel->FindPage(m_printer_view)) == wxNOT_FOUND) {
+                m_printer_view->Show(false);
+                // Immediately right of the native Device tab, not at the end of the tab bar.
+                m_tabpanel->InsertPage(m_tabpanel->PositionAfter({TAB_ID_MONITOR}), TAB_ID_MONITOR_WEB,
+                                       m_printer_view, _L("Device (Web)"), "tab_monitor_active");
+            } else {
+                m_tabpanel->SetPageText(idx, _L("Device (Web)"));
+            }
+        }
+
+#ifdef _MSW_DARK_MODE
+        wxGetApp().UpdateDarkUIWin(this);
+#endif // _MSW_DARK_MODE
+
+        fit_tab_labels(); // ORCA on printer change
+        m_plugin_pages.relayout(); // re-sync plugin tabs against the native tabs just mutated above
+
+        return;
+    }
+
+    if (should_use_native) {
         if (m_tabpanel->FindPage(m_monitor) != wxNOT_FOUND) {
             fit_tab_labels(); // ORCA on printer change - same button layout
             return;
@@ -1387,7 +1466,8 @@ void MainFrame::show_device(bool bBBLPrinter) {
             m_monitor->SetBackgroundColour(*wxWHITE);
         }
         m_monitor->Show(false);
-        m_tabpanel->InsertPage(tpMonitor, m_monitor, _L("Device"), std::string("tab_monitor_active"), std::string("tab_monitor_active"));
+        m_tabpanel->InsertPage(m_tabpanel->PositionAfter({TAB_ID_PREVIEW}), TAB_ID_MONITOR, m_monitor,
+                               _L("Device"), "tab_monitor_active");
 
         if (wxGetApp().is_enable_multi_machine()) {
             if (!m_multi_machine) {
@@ -1396,18 +1476,18 @@ void MainFrame::show_device(bool bBBLPrinter) {
             }
             // TODO: change the bitmap
             m_multi_machine->Show(false);
-            m_tabpanel->InsertPage(tpMultiDevice, m_multi_machine, _L("Multi-device"), std::string("tab_multi_active"),
-                                   std::string("tab_multi_active"), false);
+            m_tabpanel->InsertPage(m_tabpanel->PositionAfter({TAB_ID_MONITOR}), TAB_ID_MULTI_DEVICE, m_multi_machine,
+                                   _L("Multi-device"), "tab_multi_active");
         }
         if (!m_calibration) {
             m_calibration = new CalibrationPanel(m_tabpanel, wxID_ANY, wxDefaultPosition, wxDefaultSize);
             m_calibration->SetBackgroundColour(*wxWHITE);
         }
         m_calibration->Show(false);
-        // Calibration is always the last page, so don't use InsertPage here. Otherwise, if multi_machine page is not enabled,
-        // the calibration tab won't be properly added as well, due to the TabPosition::tpCalibration no longer matches the real tab position.
-        m_tabpanel->AddPage(m_calibration, _L("Calibration"), std::string("tab_calibration_active"),
-                               std::string("tab_calibration_active"), false);
+        // Last of the built-in tabs, but plugin tabs already sit past it — anchor rather than
+        // append, so its position doesn't depend on the relayout() below running afterwards.
+        m_tabpanel->InsertPage(m_tabpanel->PositionAfter({TAB_ID_PROJECT}), TAB_ID_CALIBRATION, m_calibration,
+                               _L("Calibration"), "tab_calibration_active");
 
 #ifdef _MSW_DARK_MODE
         wxGetApp().UpdateDarkUIWin(this);
@@ -1440,10 +1520,17 @@ void MainFrame::show_device(bool bBBLPrinter) {
             });
         }
         m_printer_view->Show(false);
-        m_tabpanel->InsertPage(tpMonitor, m_printer_view, _L("Device"), std::string("tab_monitor_active"),
-                               std::string("tab_monitor_active"));
+        m_tabpanel->InsertPage(m_tabpanel->PositionAfter({TAB_ID_PREVIEW}), TAB_ID_MONITOR, m_printer_view,
+                               _L("Device"), "tab_monitor_active");
     }
     fit_tab_labels(); // ORCA on printer change
+    m_plugin_pages.relayout(); // re-sync plugin tabs against the native tabs just mutated above
+}
+
+bool MainFrame::is_prepare_or_preview_tab() const
+{
+    const wxString tab = m_tabpanel->GetSelectedPageName();
+    return tab == TAB_ID_PREPARE || tab == TAB_ID_PREVIEW;
 }
 
 void MainFrame::fit_tab_labels()
@@ -1475,7 +1562,7 @@ void MainFrame::fit_tab_labels()
 bool MainFrame::preview_only_hint()
 {
     if (m_plater && (m_plater->only_gcode_mode() || (m_plater->using_exported_file()))) {
-        BOOST_LOG_TRIVIAL(info) << boost::format("skipped tab switch from %1% to %2% in preview mode")%m_tabpanel->GetSelection() %tp3DEditor;
+        BOOST_LOG_TRIVIAL(info) << boost::format("skipped tab switch from %1% to %2% in preview mode")%m_tabpanel->GetSelectedPageName() %wxString(TAB_ID_PREPARE);
 
         ConfirmBeforeSendDialog confirm_dlg(this, wxID_ANY, _L("Warning"));
         confirm_dlg.Bind(EVT_SECONDARY_CHECK_CONFIRM, [this](wxCommandEvent& e) {
@@ -1793,22 +1880,22 @@ bool MainFrame::can_clone() const {
 
 bool MainFrame::can_select() const
 {
-    return (m_plater != nullptr) && (m_tabpanel->GetSelection() == TabPosition::tp3DEditor) && !m_plater->model().objects.empty();
+    return (m_plater != nullptr) && (m_tabpanel->GetSelectedPageName() == TAB_ID_PREPARE) && !m_plater->model().objects.empty();
 }
 
 bool MainFrame::can_deselect() const
 {
-    return (m_plater != nullptr) && (m_tabpanel->GetSelection() == TabPosition::tp3DEditor) && !m_plater->is_selection_empty();
+    return (m_plater != nullptr) && (m_tabpanel->GetSelectedPageName() == TAB_ID_PREPARE) && !m_plater->is_selection_empty();
 }
 
 bool MainFrame::can_delete() const
 {
-    return (m_plater != nullptr) && (m_tabpanel->GetSelection() == TabPosition::tp3DEditor) && !m_plater->is_selection_empty();
+    return (m_plater != nullptr) && (m_tabpanel->GetSelectedPageName() == TAB_ID_PREPARE) && !m_plater->is_selection_empty();
 }
 
 bool MainFrame::can_delete_all() const
 {
-    return (m_plater != nullptr) && (m_tabpanel->GetSelection() == TabPosition::tp3DEditor) && !m_plater->model().objects.empty();
+    return (m_plater != nullptr) && (m_tabpanel->GetSelectedPageName() == TAB_ID_PREPARE) && !m_plater->model().objects.empty();
 }
 
 bool MainFrame::can_reslice() const
@@ -1917,7 +2004,7 @@ wxBoxSizer* MainFrame::create_side_tools()
                     wxPostEvent(m_plater, SimpleEvent(EVT_GLTOOLBAR_SLICE_ALL));
                 else
                     wxPostEvent(m_plater, SimpleEvent(EVT_GLTOOLBAR_SLICE_PLATE));
-                this->m_tabpanel->SetSelection(tpPreview);
+                this->m_tabpanel->SelectPageByName(TAB_ID_PREVIEW);
             }
         });
 
@@ -1999,7 +2086,8 @@ wxBoxSizer* MainFrame::create_side_tools()
             SidePopup* p = new SidePopup(this);
 
             if (wxGetApp().preset_bundle
-                && !wxGetApp().preset_bundle->is_bbl_vendor()) {
+                && !wxGetApp().preset_bundle->is_bbl_vendor()
+                && !wxGetApp().app_config->get_bool("use_printer_agents")) {
                 // ThirdParty Buttons
                 SideButton* export_gcode_btn = new SideButton(p, _L("Export G-code file"), "");
                 export_gcode_btn->SetCornerRadius(0);
@@ -2132,7 +2220,7 @@ wxBoxSizer* MainFrame::create_side_tools()
 
                 const auto preset_bundle = wxGetApp().preset_bundle;
                 if (preset_bundle) {
-                    if (preset_bundle->use_bbl_network()) {
+                    if (preset_bundle->use_bbl_network() || wxGetApp().app_config->get_bool("use_printer_agents")) {
                         // BBL network support everything
                     } else {
                         support_send = false; // All 3rd print hosts do not have the send options
@@ -3063,7 +3151,7 @@ void MainFrame::init_menubar_as_editor()
                 wxGetApp().app_config->set_bool("auto_perspective", !wxGetApp().app_config->get_bool("auto_perspective"));
                 m_plater->get_current_canvas3D()->post_event(SimpleEvent(wxEVT_PAINT));
             },
-            this, [this]() { return m_tabpanel->GetSelection() == TabPosition::tp3DEditor || m_tabpanel->GetSelection() == TabPosition::tpPreview; },
+            this, [this]() { return is_prepare_or_preview_tab(); },
             [this]() { return wxGetApp().app_config->get_bool("auto_perspective"); }, this);
 
         viewMenu->AppendSeparator();
@@ -3072,7 +3160,7 @@ void MainFrame::init_menubar_as_editor()
                 wxGetApp().toggle_show_gcode_window();
                 m_plater->get_current_canvas3D()->post_event(SimpleEvent(wxEVT_PAINT));
             },
-            this, [this]() { return m_tabpanel->GetSelection() == tpPreview; },
+            this, [this]() { return m_tabpanel->GetSelectedPageName() == TAB_ID_PREVIEW; },
             [this]() { return wxGetApp().show_gcode_window(); }, this);
 
         append_menu_check_item(
@@ -3081,7 +3169,7 @@ void MainFrame::init_menubar_as_editor()
                 wxGetApp().toggle_show_3d_navigator();
                 m_plater->get_current_canvas3D()->post_event(SimpleEvent(wxEVT_PAINT));
             },
-            this, [this]() { return m_tabpanel->GetSelection() == TabPosition::tp3DEditor || m_tabpanel->GetSelection() == TabPosition::tpPreview; },
+            this, [this]() { return is_prepare_or_preview_tab(); },
             [this]() { return wxGetApp().show_3d_navigator(); }, this);
 
         append_menu_check_item(viewMenu, wxID_ANY, _L("Show Gridlines"), _L("Show Gridlines on plate"),
@@ -3089,15 +3177,14 @@ void MainFrame::init_menubar_as_editor()
                 wxGetApp().toggle_show_plate_gridlines();
                 m_plater->get_current_canvas3D()->post_event(SimpleEvent(wxEVT_PAINT));
             }, this,
-            [this]() { return m_tabpanel->GetSelection() == TabPosition::tp3DEditor || m_tabpanel->GetSelection() == TabPosition::tpPreview; },
+            [this]() { return is_prepare_or_preview_tab(); },
             [this]() { return wxGetApp().show_plate_gridlines(); }, this);
 
         append_menu_item(
             viewMenu, wxID_ANY, _L("Reset Window Layout"), _L("Reset to default window layout"),
             [this](wxCommandEvent&) { m_plater->reset_window_layout(); }, "", this,
             [this]() {
-                return (m_tabpanel->GetSelection() == TabPosition::tp3DEditor || m_tabpanel->GetSelection() == TabPosition::tpPreview) &&
-                       m_plater->is_sidebar_enabled();
+                return is_prepare_or_preview_tab() && m_plater->is_sidebar_enabled();
             },
             this);
 
@@ -3119,7 +3206,7 @@ void MainFrame::init_menubar_as_editor()
                 wxGetApp().toggle_show_outline();
                 m_plater->get_current_canvas3D()->post_event(SimpleEvent(wxEVT_PAINT));
             },
-            this, [this]() { return m_tabpanel->GetSelection() == TabPosition::tp3DEditor; },
+            this, [this]() { return m_tabpanel->GetSelectedPageName() == TAB_ID_PREPARE; },
             [this]() { return wxGetApp().show_outline(); }, this);
 
         /*viewMenu->AppendSeparator();
@@ -3920,13 +4007,16 @@ void MainFrame::select_tab(wxPanel* panel)
         wxGetApp().params_dialog()->Popup();
         return;
     }
+    // Not panel->GetName(): Prepare and Preview share the single m_plater window, so the
+    // window has no one correct name. The slot -> id lookup is the only correct resolution.
     int page_idx = m_tabpanel->FindPage(panel);
-    if (page_idx == tp3DEditor && m_tabpanel->GetSelection() == tpPreview)
+    wxString page_name = (page_idx == wxNOT_FOUND) ? wxString() : m_tabpanel->GetPageName(static_cast<size_t>(page_idx));
+    if (page_name == TAB_ID_PREPARE && m_tabpanel->GetSelectedPageName() == TAB_ID_PREVIEW)
         return;
     //BBS GUI refactor: remove unused layout new/dlg
     /*if (page_idx != wxNOT_FOUND && m_layout == ESettingsLayout::Dlg)
         page_idx++;*/
-    select_tab(size_t(page_idx));
+    select_tab(page_name);
 }
 
 //BBS
@@ -3934,7 +4024,7 @@ void MainFrame::jump_to_monitor(std::string dev_id)
 {
     if(!m_monitor)
         return;
-    m_tabpanel->SetSelection(tpMonitor);
+    m_tabpanel->SelectPageByName(TAB_ID_MONITOR);
     if (!dev_id.empty()) {
         ((MonitorPanel*)m_monitor)->select_machine(dev_id);
     }
@@ -3944,26 +4034,26 @@ void MainFrame::jump_to_multipage()
 {
     if(!m_multi_machine)
         return;
-    m_tabpanel->SetSelection(tpMultiDevice);
+    m_tabpanel->SelectPageByName(TAB_ID_MULTI_DEVICE);
     ((MultiMachinePage*)m_multi_machine)->jump_to_send_page();
 }
 
 
 //BBS GUI refactor: remove unused layout new/dlg
-void MainFrame::select_tab(size_t tab/* = size_t(-1)*/)
+void MainFrame::select_tab(const wxString& id/* = wxString()*/)
 {
     //bool tabpanel_was_hidden = false;
 
     // Controls on page are created on active page of active tab now.
     // We should select/activate tab before its showing to avoid an UI-flickering
-    auto select = [this, tab](bool was_hidden) {
-        // when tab == -1, it means we should show the last selected tab
+    auto select = [this, id](bool was_hidden) {
+        // when id is empty, it means we should show the last selected tab
         //BBS GUI refactor: remove unused layout new/dlg
         //size_t new_selection = tab == (size_t)(-1) ? m_last_selected_tab : (m_layout == ESettingsLayout::Dlg && tab != 0) ? tab - 1 : tab;
-        size_t new_selection = tab == (size_t)(-1) ? m_last_selected_tab : tab;
+        wxString new_selection = id.empty() ? m_last_selected_tab : id;
 
-        if (m_tabpanel->GetSelection() != (int)new_selection)
-            m_tabpanel->SetSelection(new_selection);
+        if (m_tabpanel->GetSelectedPageName() != new_selection)
+            m_tabpanel->SelectPageByName(new_selection);
 #ifdef _MSW_DARK_MODE
         /*if (wxGetApp().tabs_as_menu()) {
             if (Tab* cur_tab = dynamic_cast<Tab*>(m_tabpanel->GetPage(new_selection)))
@@ -3972,10 +4062,12 @@ void MainFrame::select_tab(size_t tab/* = size_t(-1)*/)
                 m_plater->get_current_canvas3D()->render();
         }*/
 #endif
-        if (tab == MainFrame::tp3DEditor && m_layout == ESettingsLayout::Old)
+        // Intentionally `id`, not `new_selection`: the fallback-to-last-tab path must not
+        // trigger this render even when the last selected tab was Prepare.
+        if (id == TAB_ID_PREPARE && m_layout == ESettingsLayout::Old)
             m_plater->canvas3D()->render();
         else if (was_hidden) {
-            Tab* cur_tab = dynamic_cast<Tab*>(m_tabpanel->GetPage(new_selection));
+            Tab* cur_tab = dynamic_cast<Tab*>(m_tabpanel->GetPageByName(new_selection));
             if (cur_tab)
                 cur_tab->OnActivate();
         }
@@ -3984,10 +4076,10 @@ void MainFrame::select_tab(size_t tab/* = size_t(-1)*/)
     select(false);
 }
 
-void MainFrame::request_select_tab(TabPosition pos)
+void MainFrame::request_select_tab(const wxString& id)
 {
     wxCommandEvent* evt = new wxCommandEvent(EVT_SELECT_TAB);
-    evt->SetInt(pos);
+    evt->SetString(id);
     wxQueueEvent(this, evt);
 }
 
@@ -4253,21 +4345,33 @@ void MainFrame::load_printer_url(wxString url, wxString apikey)
 void MainFrame::load_printer_url()
 {
     PresetBundle &preset_bundle = *wxGetApp().preset_bundle;
-    if (preset_bundle.use_bbl_device_tab() || NetworkAgentFactory::is_current_printer_agent_plugin())
+    if (preset_bundle.use_bbl_device_tab() && !wxGetApp().app_config->get_bool("use_printer_agents"))
         return;
 
     auto     cfg = preset_bundle.printers.get_edited_preset().config;
+    if (cfg.opt_string("print_host").empty()) {
+        if (auto *device_manager = wxGetApp().getDeviceManager()) {
+            auto *machine = device_manager->get_selected_machine();
+            if (!machine) {
+                auto machines = device_manager->get_my_machine_list();
+                if (machines.size() == 1)
+                    machine = machines.begin()->second;
+            }
+            if (machine && !machine->get_dev_ip().empty())
+                cfg.opt_string("print_host") = machine->get_dev_ip();
+        }
+    }
     wxString url = from_u8(PrintHost::get_print_host_webui(&cfg));
     wxString apikey;
     const auto host_type = cfg.option<ConfigOptionEnum<PrintHostType>>("host_type")->value;
-    if (cfg.has("printhost_apikey") && (host_type == htPrusaLink || host_type == htPrusaConnect))
+    if (cfg.has("printhost_apikey") && host_type != htSimplyPrint)
         apikey = cfg.opt_string("printhost_apikey");
     if (!url.empty()) {
         load_printer_url(url, apikey);
     }
 }
 
-bool MainFrame::is_printer_view() const { return m_tabpanel->GetSelection() == TabPosition::tpMonitor; }
+bool MainFrame::is_printer_view() const { return m_tabpanel->GetSelectedPageName() == TAB_ID_MONITOR; }
 
 
 void MainFrame::refresh_plugin_tips()

src/slic3r/GUI/MainFrame.hpp

@@ -35,6 +35,21 @@
 #include "PrinterWebView.hpp"
 #include "calib_dlg.hpp"
 #include "MultiMachinePage.hpp"
+#include "slic3r/plugin/host/PluginPages.hpp"
+
+// Stable identifiers for MainFrame::m_tabpanel's built-in pages. These are
+// names rather than positional indices so optional pages cannot shift them.
+#define TAB_ID_HOME          "home"
+#define TAB_ID_PREPARE       "prepare"
+#define TAB_ID_PREVIEW       "preview"
+#define TAB_ID_MONITOR       "monitor"
+// Printer-agents mode shows the legacy web page alongside the native Device tab, so it needs an
+// id of its own: sharing TAB_ID_MONITOR makes every name lookup resolve to whichever of the two
+// comes first, which silently defeats PluginPages' selection round-trip across a tab relayout.
+#define TAB_ID_MONITOR_WEB   "monitor_web"
+#define TAB_ID_MULTI_DEVICE  "multi_device"
+#define TAB_ID_PROJECT       "project"
+#define TAB_ID_CALIBRATION   "calibration"
 
 #define ENABEL_PRINT_ALL 0
 
@@ -115,7 +130,7 @@ class MainFrame : public DPIFrame
     wxMenuItem* m_menu_item_reslice_now { nullptr };
     wxSizer*    m_main_sizer{ nullptr };
 
-    size_t      m_last_selected_tab;
+    wxString    m_last_selected_tab;
 
     std::string     get_base_name(const wxString &full_name, const char *extension = nullptr) const;
     std::string     get_dir_name(const wxString &full_name) const;
@@ -214,19 +229,6 @@ public:
 #ifdef __APPLE__
     bool get_mac_full_screen() { return m_mac_fullscreen; }
 #endif
-    //BBS GUI refactor
-    enum TabPosition
-    {
-        tpHome          = 0,
-        tp3DEditor      = 1,
-        tpPreview       = 2,
-        tpMonitor       = 3,
-        tpMultiDevice   = 4,
-        tpProject       = 5,
-        tpCalibration   = 6,
-        tpAuxiliary     = 7,
-        toDebugTool     = 8,
-    };
 
     //BBS: add slice&&print status update logic
     enum SlicePrintEventType
@@ -326,8 +328,8 @@ public:
     // When tab == -1, will be selected last selected tab
     //BBS: GUI refactor
     void        select_tab(wxPanel* panel);
-    void        select_tab(size_t tab = size_t(-1));
-    void        request_select_tab(TabPosition pos);
+    void        select_tab(const wxString& id = wxString());
+    void        request_select_tab(const wxString& id);
     int         get_calibration_curr_tab();
     void        select_view(const std::string& direction);
     // Propagate changed configuration from the Tab to the Plater and save changes to the AppConfig
@@ -358,8 +360,11 @@ public:
     void RunScript(wxString js);
 
     //SoftFever
-    void show_device(bool bBBLPrinter);
+    void show_device(bool should_use_native);
     void fit_tab_labels(); // ORCA
+    // True while either of the two tabs backed by m_plater is selected.
+    bool is_prepare_or_preview_tab() const;
+    PluginPages& plugin_pages() { return m_plugin_pages; }
 
     PA_Calibration_Dlg* m_pa_calib_dlg{ nullptr };
     FlowRateCalibrationDialog* m_flow_rate_calib_dlg{ nullptr };
@@ -385,6 +390,7 @@ public:
     CalibrationPanel*     m_calibration{ nullptr };
     WebViewPanel*         m_webview { nullptr };
     PrinterWebView*       m_printer_view{nullptr};
+    PluginPages           m_plugin_pages;
     wxLogWindow*          m_log_window { nullptr };
     // BBS
     //wxBookCtrlBase*       m_tabpanel { nullptr };

src/slic3r/GUI/Monitor.cpp

@@ -186,17 +186,17 @@ void MonitorPanel::init_tabpanel()
 
     //m_status_add_machine_panel = new AddMachinePanel(m_tabpanel);
     m_status_info_panel        = new StatusPanel(m_tabpanel);
-    m_tabpanel->AddPage(m_status_info_panel, _L("Status"), "", true);
+    m_tabpanel->AddPage(m_status_info_panel, _L("Status"), true);
 
     m_media_file_panel = new MediaFilePanel(m_tabpanel);
-    m_tabpanel->AddPage(m_media_file_panel, _L("Storage"), "", false);
-    //m_tabpanel->AddPage(m_media_file_panel, _L("Internal Storage"), "", false);
+    m_tabpanel->AddPage(m_media_file_panel, _L("Storage"), false);
+    //m_tabpanel->AddPage(m_media_file_panel, _L("Internal Storage"), false);
 
     m_upgrade_panel = new UpgradePanel(m_tabpanel);
-    m_tabpanel->AddPage(m_upgrade_panel, _L_CONTEXT(L_CONTEXT("Update", "Firmware"), "Firmware"), "", false);
+    m_tabpanel->AddPage(m_upgrade_panel, _L_CONTEXT(L_CONTEXT("Update", "Firmware"), "Firmware"), false);
 
     m_hms_panel = new HMSPanel(m_tabpanel);
-    m_tabpanel->AddPage(m_hms_panel, _L("Assistant(HMS)"),    "", false);
+    m_tabpanel->AddPage(m_hms_panel, _L("Assistant(HMS)"),    false);
 
     std::string network_ver = Slic3r::NetworkAgent::get_version();
     if (!network_ver.empty()) {
@@ -413,7 +413,10 @@ void MonitorPanel::update_hms_tag()
 bool MonitorPanel::Show(bool show)
 {
 #ifdef __APPLE__
-    wxGetApp().mainframe->SetMinSize(wxGetApp().plater()->GetMinSize());
+    // Notebook::InsertPage() hides every page it appends, so this also runs while MainFrame is
+    // still constructing, before GUI_App::mainframe is assigned. Same guard as Plater::Show().
+    if (wxGetApp().mainframe)
+        wxGetApp().mainframe->SetMinSize(wxGetApp().plater()->GetMinSize());
 #endif
 
     NetworkAgent* m_agent = wxGetApp().getAgent();

src/slic3r/GUI/MsgDialog.cpp

@@ -9,8 +9,13 @@
 #include <wx/clipbrd.h>
 #include <wx/checkbox.h>
 #include <wx/html/htmlwin.h>
+#include <wx/html/winpars.h>
+
+#include <algorithm>
 
 #include <boost/algorithm/string/replace.hpp>
+#include <boost/algorithm/string/split.hpp>
+#include <boost/algorithm/string/classification.hpp>
 
 #include "libslic3r/libslic3r.h"
 #include "libslic3r/Utils.hpp"
@@ -229,12 +234,82 @@ void MsgDialog::finalize()
 }
 
 
+// A placeholder-parser caret line, pointing at the column where parsing failed.
+static bool is_caret_line(const std::string &line)
+{
+    return std::count(line.begin(), line.end(), '^') == 1 &&
+           std::all_of(line.begin(), line.end(), [](char c) { return c == ' ' || c == '^'; });
+}
+
+// Tag each line as a code excerpt (a caret line or the source line above one) that must stay
+// monospaced for the '^' to align.
+static std::vector<std::pair<std::string, bool>> classify_code_lines(const std::string &msg)
+{
+    std::vector<std::string> lines;
+    boost::split(lines, msg, boost::is_any_of("\n"));
+    for (std::string &line : lines)
+        if (!line.empty() && line.back() == '\r')
+            line.pop_back();
+
+    std::vector<std::pair<std::string, bool>> tagged;
+    tagged.reserve(lines.size());
+    for (size_t i = 0; i < lines.size(); ++i) {
+        bool is_code = is_caret_line(lines[i]) || (i + 1 < lines.size() && is_caret_line(lines[i + 1]));
+        tagged.emplace_back(std::move(lines[i]), is_code);
+    }
+    return tagged;
+}
+
+// Keeps whitespace literal so the caret's leading spaces survive.
+// Used inside <code>, which supplies the fixed face. <pre> does both but adds a blank line above it.
+class CodeExcerptTagHandler : public wxHtmlWinTagHandler
+{
+public:
+    wxString GetSupportedTags() override { return wxT("EXCERPT"); }
+    bool     HandleTag(const wxHtmlTag &tag) override
+    {
+        const wxHtmlWinParser::WhitespaceMode ws = m_WParser->GetWhitespaceMode();
+        m_WParser->SetWhitespaceMode(wxHtmlWinParser::Whitespace_Pre);
+        ParseInner(tag);
+        m_WParser->SetWhitespaceMode(ws);
+        return true;
+    }
+};
+
+// Render the message as HTML, monospacing only the code excerpts.
+static std::string format_parser_error_html(const std::string &msg)
+{
+    std::string out;
+    for (const auto &[text, is_code] : classify_code_lines(msg)) {
+        if (!out.empty()) out += "<br>"; // join, not trail; a trailing <br> forces a scrollbar
+        std::string escaped = xml_escape(text);
+        if (is_code)
+            out += "<code><excerpt>" + escaped + "</excerpt></code>";
+        else
+            out += escaped;
+    }
+    return out;
+}
+
+// Measure each line in the font it will render in, so the dialog fits the longest line without slack.
+static wxSize measure_mixed_text(wxWindow *parent, const std::string &msg, const wxFont &prose_font, const wxFont &code_font)
+{
+    wxClientDC dc(parent);
+    int width = 0, height = 0;
+    for (const auto &[text, is_code] : classify_code_lines(msg)) {
+        dc.SetFont(is_code ? code_font : prose_font);
+        width   = std::max(width, dc.GetTextExtent(wxString::FromUTF8(text.c_str())).GetWidth());
+        height += dc.GetCharHeight();
+    }
+    return wxSize(width, height);
+}
+
 // Text shown as HTML, so that mouse selection and Ctrl-V to copy will work.
 static void add_msg_content(wxWindow   *parent,
                             wxBoxSizer *content_sizer,
                             wxString    msg,
-                            bool        monospaced_font = false,
-                            bool        is_marked_msg   = false,
+                            bool        has_code_excerpts = false,
+                            bool        is_marked_msg     = false,
                             const wxString &link_text = "",
                             std::function<void(const wxString &)> link_callback = nullptr)
 {
@@ -243,7 +318,7 @@ static void add_msg_content(wxWindow   *parent,
 
     // count lines in the message
     int msg_lines = 0;
-    if (!monospaced_font) {
+    if (!has_code_excerpts) {
         int line_len = 55;// count of symbols in one line
         int start_line = 0;
         for (auto i = msg.begin(); i != msg.end(); ++i) {
@@ -300,13 +375,23 @@ static void add_msg_content(wxWindow   *parent,
         page_size       = wxSize(info_width, page_height);
     }
     else {
-        wxClientDC dc(parent);
-        dc.SetFont(font); // ORCA without this it calculates bigger size
-        wxSize msg_sz = dc.GetMultiLineTextExtent(msg) + parent->FromDIP(wxSize(10,5)); // added extra spacing to prevent wrapping
+        wxSize msg_sz;
+        if (has_code_excerpts) {
+            msg_sz = measure_mixed_text(parent, msg.ToUTF8().data(), font, monospace);
+        } else {
+            wxClientDC dc(parent);
+            dc.SetFont(font); // ORCA without this it calculates bigger size
+            msg_sz = dc.GetMultiLineTextExtent(msg);
+        }
+        msg_sz += parent->FromDIP(wxSize(10,5)); // added extra spacing to prevent wrapping
 
-        page_size = wxSize(std::min(msg_sz.GetX(), info_width), std::min(msg_sz.GetY(), info_width));
+        int page_height = msg_sz.GetY();
+        // Reserve the horizontal scrollbar's height, or it clips the last line.
+        if (msg_sz.GetX() > info_width)
+            page_height += wxSystemSettings::GetMetric(wxSYS_HSCROLL_Y, parent);
+        page_size = wxSize(std::min(msg_sz.GetX(), info_width), std::min(page_height, info_width));
         // Extra line breaks in message dialog
-        if (link_text.IsEmpty() && !link_callback && is_marked_msg == false) {//for common text
+        if (link_text.IsEmpty() && !link_callback && is_marked_msg == false && !has_code_excerpts) {//for common text
             html->Destroy();
             if (msg_sz.GetX() < info_width) {//No need for line breaks
                 info_width = msg_sz.GetX();
@@ -337,12 +422,15 @@ static void add_msg_content(wxWindow   *parent,
     }
     html->SetMinSize(page_size);
 
-    std::string msg_escaped = xml_escape(msg.ToUTF8().data(), is_marked_msg);
-    boost::replace_all(msg_escaped, "\r\n", "<br>");
-    boost::replace_all(msg_escaped, "\n", "<br>");
-    if (monospaced_font)
-        // Code formatting will be preserved. This is useful for reporting errors from the placeholder parser.
-        msg_escaped = std::string("<pre><code>") + msg_escaped + "</code></pre>";
+    std::string msg_escaped;
+    if (has_code_excerpts) {
+        html->GetParser()->AddTagHandler(new CodeExcerptTagHandler());
+        msg_escaped = format_parser_error_html(msg.ToUTF8().data());
+    } else {
+        msg_escaped = xml_escape(msg.ToUTF8().data(), is_marked_msg);
+        boost::replace_all(msg_escaped, "\r\n", "<br>");
+        boost::replace_all(msg_escaped, "\n", "<br>");
+    }
 
     if (!link_text.IsEmpty() && link_callback) {
         msg_escaped += "<span><a href=\"#\" style=\"color:rgb(0, 150, 136); text-decoration:underline;\">" + std::string(link_text.ToUTF8().data()) + "</a></span>";
@@ -360,15 +448,15 @@ static void add_msg_content(wxWindow   *parent,
 
 // ErrorDialog
 
-ErrorDialog::ErrorDialog(wxWindow *parent, const wxString &temp_msg, bool monospaced_font)
+ErrorDialog::ErrorDialog(wxWindow *parent, const wxString &temp_msg, bool has_code_excerpts)
     : MsgDialog(parent, wxString::Format(_(L("%s error")), SLIC3R_APP_FULL_NAME),
                         wxString::Format(_(L("%s has encountered an error")), SLIC3R_APP_FULL_NAME), wxOK)
     , msg(temp_msg)
 {
-    add_msg_content(this, content_sizer, msg, monospaced_font);
+    add_msg_content(this, content_sizer, msg, has_code_excerpts);
 
-	// Use a small bitmap with monospaced font, as the error text will not be wrapped.
-	logo->SetBitmap(create_scaled_bitmap("OrcaSlicer_192px_grayscale.png", this, monospaced_font ? 48 : /*1*/64));
+	// Use a small bitmap for code excerpts, which cannot wrap and so need the width.
+	logo->SetBitmap(create_scaled_bitmap("OrcaSlicer_192px_grayscale.png", this, has_code_excerpts ? 48 : /*1*/64));
 
     SetMaxSize(MSG_DLG_MAX_SIZE);
 

src/slic3r/GUI/MsgDialog.hpp

@@ -106,9 +106,9 @@ protected:
 class ErrorDialog : public MsgDialog
 {
 public:
-	// If monospaced_font is true, the error message is displayed using html <code><pre></pre></code> tags,
-	// so that the code formatting will be preserved. This is useful for reporting errors from the placeholder parser.
-	ErrorDialog(wxWindow *parent, const wxString &temp_msg, bool courier_font);
+	// If has_code_excerpts is true, code excerpts (a source line and the caret line below it) render
+	// monospaced so the caret aligns. Used for placeholder-parser errors.
+	ErrorDialog(wxWindow *parent, const wxString &temp_msg, bool has_code_excerpts);
 	ErrorDialog(ErrorDialog &&) = delete;
 	ErrorDialog(const ErrorDialog &) = delete;
 	ErrorDialog &operator=(ErrorDialog &&) = delete;

src/slic3r/GUI/MultiMachinePage.cpp

@@ -86,9 +86,9 @@ void MultiMachinePage::init_tabpanel()
     m_cloud_task_manager = new CloudTaskManagerPage(m_tabpanel);
     m_machine_manager = new MultiMachineManagerPage(m_tabpanel);
 
-    m_tabpanel->AddPage(m_machine_manager, _L("Device"), "", true);
-    m_tabpanel->AddPage(m_local_task_manager, _L("Task Sending"), "", false);
-    m_tabpanel->AddPage(m_cloud_task_manager, _L("Task Sent"), "", false);
+    m_tabpanel->AddPage(m_machine_manager, _L("Device"), true);
+    m_tabpanel->AddPage(m_local_task_manager, _L("Task Sending"), false);
+    m_tabpanel->AddPage(m_cloud_task_manager, _L("Task Sent"), false);
 }
 
 void MultiMachinePage::init_timer()

src/slic3r/GUI/Notebook.cpp

@@ -120,11 +120,11 @@ void ButtonsListCtrl::Rescale()
 
 void ButtonsListCtrl::SetSelection(int sel)
 {
-    if (m_selection == sel)
+    if (m_selection == sel && sel >= 0 && sel < static_cast<int>(m_pageButtons.size()))
         return;
     // BBS: change button color
     wxColour selected_btn_bg("#009688");    // Gradient #009688
-    if (m_selection >= 0) {
+    if (m_selection >= 0 && m_selection < static_cast<int>(m_pageButtons.size())) {
         StateColor bg_color = StateColor(
         std::pair{wxColour(107, 107, 107), (int) StateColor::Hovered},
         std::pair{wxColour(59, 68, 70), (int) StateColor::Normal});
@@ -132,9 +132,15 @@ void ButtonsListCtrl::SetSelection(int sel)
         StateColor text_color = StateColor(
         std::pair{wxColour(254,254, 254), (int) StateColor::Normal}
         );
-        m_pageButtons[m_selection]->SetSelected(false);
         m_pageButtons[m_selection]->SetTextColor(text_color);
     }
+
+    if (sel < 0 || sel >= static_cast<int>(m_pageButtons.size())) {
+        m_selection = -1;
+        Refresh();
+        return;
+    }
+
     m_selection = sel;
 
     StateColor bg_color = StateColor(
@@ -145,17 +151,19 @@ void ButtonsListCtrl::SetSelection(int sel)
     StateColor text_color = StateColor(
         std::pair{wxColour(254, 254, 254), (int) StateColor::Normal}
         );
-    m_pageButtons[m_selection]->SetSelected(true);
     m_pageButtons[m_selection]->SetTextColor(text_color);
     
     Refresh();
 }
 
-bool ButtonsListCtrl::InsertPage(size_t n, const wxString &text, bool bSelect /* = false*/, const std::string &bmp_name /* = ""*/, const std::string &inactive_bmp_name)
+bool ButtonsListCtrl::InsertPage(size_t n, const wxString &text, bool bSelect /* = false*/, const std::string &bmp_name /* = ""*/, const wxBitmap &bmp /* = wxNullBitmap */)
 {
     Button * btn = new Button(this, text.empty() ? text : " " + text, bmp_name, wxNO_BORDER);
     btn->SetCornerRadius(0);
 
+    if (bmp_name.empty() && bmp.IsOk())
+        btn->SetIcon(bmp);
+
     int em = em_unit(this);
     //BBS set size for button
     btn->SetMinSize({(text.empty() ? 40 : 136) * em / 10, 36 * em / 10});
@@ -168,8 +176,6 @@ bool ButtonsListCtrl::InsertPage(size_t n, const wxString &text, bool bSelect /*
     StateColor text_color = StateColor(
         std::pair{wxColour(254,254, 254), (int) StateColor::Normal});
     btn->SetTextColor(text_color);
-    btn->SetInactiveIcon(inactive_bmp_name);
-    btn->SetSelected(false);
     btn->Bind(wxEVT_BUTTON, [this, btn](wxCommandEvent& event) {
         if (auto it = std::find(m_pageButtons.begin(), m_pageButtons.end(), btn); it != m_pageButtons.end()) {
             auto sel = it - m_pageButtons.begin();
@@ -192,6 +198,14 @@ bool ButtonsListCtrl::InsertPage(size_t n, const wxString &text, bool bSelect /*
 
 void ButtonsListCtrl::RemovePage(size_t n)
 {
+    if (n >= m_pageButtons.size())
+        return;
+
+    if (m_selection == static_cast<int>(n))
+        m_selection = -1;
+    else if (m_selection > static_cast<int>(n))
+        --m_selection;
+
     Button* btn = m_pageButtons[n];
     m_pageButtons.erase(m_pageButtons.begin() + n);
     m_pageLabels.erase(m_pageLabels.begin() + n); // ORCA
@@ -240,6 +254,24 @@ wxString ButtonsListCtrl::GetPageText(size_t n) const
     return btn->GetLabel();
 }
 
+// ORCA
+void ButtonsListCtrl::SetOverflowButton(wxWindow* button)
+{
+    if (m_overflow_button == button)
+        return;
+
+    if (m_overflow_button != nullptr)
+        m_sizer->Detach(m_overflow_button);
+
+    m_overflow_button = button;
+
+    if (m_overflow_button != nullptr)
+        // Right after the tab buttons (index 0), ahead of any stretch spacer / side_tools.
+        m_sizer->Insert(1, m_overflow_button, 0, wxALIGN_CENTER_VERTICAL | wxLEFT | wxBOTTOM, m_btn_margin);
+
+    m_sizer->Layout();
+}
+
 //#endif // _WIN32
 
 void Notebook::Init()
@@ -253,6 +285,8 @@ void Notebook::Init()
 
     m_showTimeout = m_hideTimeout = 0;
 
+    m_pageNames.clear();
+
     /* On Linux, Gstreamer wxMediaCtrl does not seem to get along well with
      * 32-bit X11 visuals (the overlay does not work).  Is this a wxWindows
      * bug?  Is this a Gstreamer bug?  No idea, but it is our problem ... 

src/slic3r/GUI/Notebook.hpp

@@ -3,7 +3,11 @@
 
 //#ifdef _WIN32
 
+#include <initializer_list>
+#include <string>
+#include <vector>
 #include <wx/bookctrl.h>
+#include <wx/bitmap.h>
 #include <wx/sizer.h>
 
 class ScalableButton;
@@ -23,13 +27,16 @@ public:
     void SetSelection(int sel);
     void UpdateMode();
     void Rescale();
-    bool InsertPage(size_t n, const wxString &text, bool bSelect = false, const std::string &bmp_name = "", const std::string &inactive_bmp_name = "");
+    bool InsertPage(size_t n, const wxString &text, bool bSelect = false, const std::string &bmp_name = "", const wxBitmap &bmp = wxNullBitmap);
     void RemovePage(size_t n);
     bool SetPageImage(size_t n, const std::string& bmp_name) const;
     void SetPageText(size_t n, const wxString& strText);
     void SetCompact(size_t n, bool compact); // ORCA
     wxString GetPageText(size_t n) const;
     wxFlexGridSizer* GetBtnsSizer(){return m_buttons_sizer;}; // ORCA
+    // ORCA: a companion widget shown right after the tab buttons (before any side_tools), e.g.
+    // an overflow indicator. Pass nullptr to remove it; ownership stays with the caller.
+    void SetOverflowButton(wxWindow* button);
 
 private:
     wxFlexGridSizer*                m_buttons_sizer;
@@ -40,9 +47,10 @@ private:
     int                             m_btn_margin;
     int                             m_line_margin;
     std::vector<wxString>           m_pageLabels; // ORCA
+    wxWindow*                       m_overflow_button{nullptr}; // ORCA
 };
 
-class Notebook: public wxBookCtrlBase
+class Notebook : public wxBookCtrlBase
 {
 public:
     Notebook(wxWindow * parent,
@@ -103,7 +111,7 @@ public:
     // by this control) and show it immediately.
     bool ShowNewPage(wxWindow * page)
     {
-        return AddPage(page, wxString(), "", "");
+        return AddPage(page, wxString(), false, NO_IMAGE);
     }
 
 
@@ -135,51 +143,56 @@ public:
 
     // Implement base class pure virtual methods.
 
-    // adds a new page to the control
-    bool AddPage(wxWindow* page,
+    // Page management. Every insertion funnels through the InsertPage() below; `id` is the
+    // stable page name FindPageByName() resolves. Built-in tabs name a resource bitmap,
+    // plugin pages hand over a ready wxBitmap; wx's own imageId overloads carry neither.
+    bool AddPage(const wxString& id,
+                 wxWindow* page,
                  const wxString& text,
-                 const std::string& bmp_name,
-                 const std::string& inactive_bmp_name,
+                 const std::string& bmp_name = "",
                  bool bSelect = false)
     {
         DoInvalidateBestSize();
-        return InsertPage(GetPageCount(), page, text, bmp_name, inactive_bmp_name, bSelect);
+        return InsertPage(GetPageCount(), id, page, text, bmp_name, bSelect);
     }
 
-    // Page management
-    virtual bool InsertPage(size_t n,
-                            wxWindow * page,
-                            const wxString & text,
-                            bool bSelect = false,
-                            int imageId = NO_IMAGE) override
+    bool AddPage(wxWindow* page, const wxString& text, bool bSelect = false, int imageId = NO_IMAGE) override
     {
-        if (!wxBookCtrlBase::InsertPage(n, page, text, bSelect, imageId))
+        DoInvalidateBestSize();
+        return InsertPage(GetPageCount(), page, text, bSelect, imageId);
+    }
+
+    bool InsertPage(size_t n,
+                    const wxString& id,
+                    wxWindow * page,
+                    const wxString & text,
+                    const std::string& bmp_name = "",
+                    bool bSelect = false,
+                    const wxBitmap& bmp = wxNullBitmap)
+    {
+        if (!wxBookCtrlBase::InsertPage(n, page, text, bSelect))
             return false;
 
-        GetBtnsListCtrl()->InsertPage(n, text, bSelect);
+        m_pageNames.insert(m_pageNames.begin() + n, id);
+        GetBtnsListCtrl()->InsertPage(n, text, bSelect, bmp_name, bmp);
 
+        // wxBookCtrlBase::InsertPage() only inserts into the page list and sizes the new
+        // page to the current page's rect — it never touches visibility, and a freshly
+        // constructed page defaults to shown. Without this it renders on top of whatever
+        // page is currently selected until the next SetSelection() call hides it.
         if (!DoSetSelectionAfterInsertion(n, bSelect))
             page->Hide();
 
         return true;
     }
 
-    bool InsertPage(size_t n,
-                    wxWindow * page,
-                    const wxString & text,
-                    const std::string& bmp_name = "",
-                    const std::string& inactive_bmp_name = "",
-                    bool bSelect = false)
+    virtual bool InsertPage(size_t n,
+                            wxWindow * page,
+                            const wxString & text,
+                            bool bSelect = false,
+                            int WXUNUSED(imageId) = NO_IMAGE) override
     {
-        if (!wxBookCtrlBase::InsertPage(n, page, text, bSelect))
-            return false;
-
-        GetBtnsListCtrl()->InsertPage(n, text, bSelect, bmp_name, inactive_bmp_name);
-
-        if (bSelect)
-            SetSelection(n);
-
-        return true;
+        return InsertPage(n, wxString(), page, text, "", bSelect);
     }
 
     virtual int SetSelection(size_t n) override
@@ -211,8 +224,8 @@ public:
         return DoSetSelection(n);
     }
 
-    // Neither labels nor images are supported but we still store the labels
-    // just in case the user code attaches some importance to them.
+    // Labels are stored by the custom button list; wx's image-list API is unused — tab icons
+    // are set directly on the buttons, either from a resource name or a ready wxBitmap.
     virtual bool SetPageText(size_t n, const wxString & strText) override
     {
         wxCHECK_MSG(n < GetPageCount(), false, wxS("Invalid page"));
@@ -251,7 +264,64 @@ public:
             page->SetFocus();
     }
 
+    // The base clears its page list directly instead of calling DoRemovePage() per page,
+    // which would leave m_pageNames behind. No caller today; kept in sync regardless.
+    virtual bool DeleteAllPages() override
+    {
+        m_pageNames.clear();
+        return wxBookCtrlBase::DeleteAllPages();
+    }
+
     ButtonsListCtrl* GetBtnsListCtrl() const { return static_cast<ButtonsListCtrl*>(m_bookctrl); }
+    void SetOverflowButton(wxWindow* button) { GetBtnsListCtrl()->SetOverflowButton(button); }
+
+    // Insertion index just past the first of `ids` that is present, or the end of the bar
+    // if none is — lets call sites state tab order as "after X" instead of re-deriving it.
+    size_t PositionAfter(std::initializer_list<const char*> ids) const
+    {
+        for (const char* id : ids)
+            if (const int idx = FindPageByName(id); idx != wxNOT_FOUND)
+                return static_cast<size_t>(idx) + 1;
+        return GetPageCount();
+    }
+
+    int FindPageByName(const wxString& id) const
+    {
+        if (id.empty())
+            return wxNOT_FOUND;
+        for (size_t i = 0; i < m_pageNames.size(); ++i)
+            if (m_pageNames[i] == id)
+                return static_cast<int>(i);
+        return wxNOT_FOUND;
+    }
+
+    wxWindow* GetPageByName(const wxString& id) const
+    {
+        const int idx = FindPageByName(id);
+        return idx == wxNOT_FOUND ? nullptr : GetPage(static_cast<size_t>(idx));
+    }
+
+    bool SelectPageByName(const wxString& id)
+    {
+        const int idx = FindPageByName(id);
+        if (idx == wxNOT_FOUND)
+            return false;
+        SetSelection(static_cast<size_t>(idx));
+        return true;
+    }
+
+    // Inverse of FindPageByName: index -> id. Empty string for an out-of-range
+    // index or a page that was never given an id (e.g. settings Tab pages).
+    wxString GetPageName(size_t n) const
+    {
+        return n < m_pageNames.size() ? m_pageNames[n] : wxString();
+    }
+
+    wxString GetSelectedPageName() const
+    {
+        const int sel = GetSelection();
+        return sel < 0 ? wxString() : GetPageName(static_cast<size_t>(sel));
+    }
 
     void UpdateMode()
     {
@@ -369,6 +439,7 @@ protected:
         wxWindow* const win = wxBookCtrlBase::DoRemovePage(page);
         if (win)
         {
+            m_pageNames.erase(m_pageNames.begin() + page);
             GetBtnsListCtrl()->RemovePage(page);
             DoSetSelectionAfterRemoval(page);
         }
@@ -394,6 +465,8 @@ protected:
 private:
     void Init();
 
+    std::vector<wxString> m_pageNames; // index-parallel to wxBookCtrlBase::m_pages
+
     wxShowEffect m_showEffect,
                  m_hideEffect;
 

src/slic3r/GUI/NotificationManager.cpp

@@ -1918,7 +1918,7 @@ void NotificationManager::push_validate_error_notification(StringObjectException
 				wxGetApp().sidebar().jump_to_option(opt, Preset::TYPE_PRINT, L"");
 			}
 			else {
-				wxGetApp().mainframe->select_tab(MainFrame::tp3DEditor);
+				wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
 			}
 			return false;
 		};
@@ -1985,7 +1985,7 @@ void NotificationManager::push_validate_error_notification(StringObjectException
 				wxGetApp().sidebar().jump_to_option(opt, opt_type, L"");
 			}
 			else {
-				wxGetApp().mainframe->select_tab(MainFrame::tp3DEditor);
+				wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
 			}
 			return false;
 		};
@@ -2015,7 +2015,7 @@ void NotificationManager::push_slicing_error_notification(const std::string &tex
 				if (iter != objects.end()) { ovs.push_back({ *iter, nullptr }); }
 			}
 			if (!ovs.empty()) {
-				wxGetApp().mainframe->select_tab(MainFrame::tp3DEditor);
+				wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
 				wxGetApp().obj_list()->select_items(ovs);
 			}
 			return false;
@@ -2046,7 +2046,7 @@ void NotificationManager::push_slicing_warning_notification(const std::string& t
 			auto& objects = wxGetApp().model().objects;
 			auto iter = std::find_if(objects.begin(), objects.end(), [id](auto o) { return o->id() == id; });
 			if (iter != objects.end()) {
-				wxGetApp().mainframe->select_tab(MainFrame::tp3DEditor);
+				wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
 				wxGetApp().obj_list()->select_items({ {*iter, nullptr} });
 			}
 			return false;
@@ -2693,7 +2693,7 @@ void NotificationManager::push_slicing_serious_warning_notification(const std::s
 				if (iter != objects.end()) { ovs.push_back({ *iter, nullptr }); }
 			}
 			if (!ovs.empty()) {
-				wxGetApp().mainframe->select_tab(MainFrame::tp3DEditor);
+				wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
 				wxGetApp().obj_list()->select_items(ovs);
 				wxGetApp().obj_list()->update_selections_on_canvas();
 			}
@@ -2777,7 +2777,7 @@ void NotificationManager::push_slicing_serious_warning_notification(const std::s
                 }
             }
             
-            wxGetApp().mainframe->select_tab(MainFrame::tp3DEditor);
+            wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
             
             if (!sel_items.empty()) {
                 obj_list->select_items(sel_items);

src/slic3r/GUI/OptionsGroup.cpp

@@ -54,6 +54,9 @@ const t_field& OptionsGroup::build_field(const t_config_option_key& id, const Co
     case ConfigOptionDef::GUIType::one_string: m_fields.emplace(id, TextCtrl::Create<TextCtrl>(this->ctrl_parent(), opt, id)); break;
     case ConfigOptionDef::GUIType::plugin_picker: m_fields.emplace(id, PluginField::Create<PluginField>(this->ctrl_parent(), opt, id)); break;
     case ConfigOptionDef::GUIType::plugin_config: m_fields.emplace(id, PluginConfigField::Create<PluginConfigField>(this->ctrl_parent(), opt, id)); break;
+    case ConfigOptionDef::GUIType::printer_agent_select: m_fields.emplace(
+            id, PrinterAgentChoice::Create<PrinterAgentChoice>(this->ctrl_parent(), opt, id));
+        break;
     default:
         switch (opt.type) {
             case coFloatOrPercent:
@@ -386,6 +389,7 @@ void OptionsGroup::activate_line(Line& line)
             }
             if (label != nullptr && line.label_tooltip != "")
                 label->SetToolTip(line.label_tooltip);
+            line.label_widget = label;
         }
     }
 
@@ -574,6 +578,7 @@ void OptionsGroup::clear(bool destroy_custom_ctrl)
     for (Line& line : m_lines) {
         if (line.near_label_widget_win)
             line.near_label_widget_win = nullptr;
+        line.label_widget = nullptr;
 
         if (line.widget_sizer) {
             line.widget_sizer->Clear(true);
@@ -652,6 +657,16 @@ Option ConfigOptionsGroup::get_option(const std::string& opt_key, int opt_index
 
 void ConfigOptionsGroup::on_change_OG(const t_config_option_key& opt_id, const boost::any& value)
 {
+    if (opt_id == "printer_agent") {
+        // TODO: Replace this option-specific branch with a generic value adapter if
+        // more fields need custom field-value to config-value conversion.
+        if (const std::string* id = boost::any_cast<std::string>(&value))
+            this->change_opt_value("printer_agent", wxGetApp().canonical_printer_agent_id(*id));
+
+        OptionsGroup::on_change_OG(opt_id, value);
+        return;
+    }
+
     if (!m_opt_map.empty()) {
         auto it = m_opt_map.find(opt_id);
         if (it == m_opt_map.end()) {
@@ -770,6 +785,19 @@ void ConfigOptionsGroup::back_to_config_value(const DynamicPrintConfig& config,
         }
     }
 #endif
+    else if (opt_key == "printer_agent")
+    {
+        // why: printer_agent is a coString kept out of m_opt_map. The generic non-opt_map revert
+        // below restores the edited config from get_value(), but a deregistered/"(missing)" saved
+        // id has no selectable row, so the field yields no value and the edited config keeps the
+        // user's interim pick -> stuck dirty. Restore the SAVED id straight into the edited config
+        // (displayable or not; config is the saved or system baseline), then repaint and notify.
+        const std::string saved_id = config.opt_string("printer_agent");
+        set_value(opt_key, saved_id);
+        this->change_opt_value(opt_key, saved_id);
+        OptionsGroup::on_change_OG(opt_key, saved_id);
+        return;
+    }
     else if (m_opt_map.find(opt_key) == m_opt_map.end() ||
              // This option don't have corresponded field
              opt_key == "printable_area" || opt_key == "compatible_printers" || opt_key == "compatible_prints" || opt_key == "thumbnails" ||

src/slic3r/GUI/OptionsGroup.hpp

@@ -62,6 +62,7 @@ public:
     widget_t	widget {nullptr};
     std::function<wxWindow*(wxWindow*)>	near_label_widget{ nullptr };
 	wxWindow*	near_label_widget_win {nullptr};
+    wxStaticText* label_widget {nullptr};
     wxSizer*	widget_sizer {nullptr};
     wxSizer*	extra_widget_sizer {nullptr};
     //BBS: export the extra colume widget
@@ -81,6 +82,14 @@ public:
 		label(_(label)), label_tooltip(_(tooltip)) {}
 	Line() : m_is_separator(true) {}
 
+    void set_label(const wxString& new_label) {
+        label = new_label;
+        if (label_widget != nullptr) {
+            label_widget->SetLabel(label + (label.IsEmpty() ? "" : ": "));
+            label_widget->Refresh();
+        }
+    }
+
 	bool is_separator() const { return m_is_separator; }
 	bool has_only_option(const std::string& opt_key) const { return m_options.size() == 1 && m_options[0].opt_id == opt_key; }
 

src/slic3r/GUI/PartPlate.cpp

@@ -2262,6 +2262,12 @@ Vec3d PartPlate::estimate_wipe_tower_size(const DynamicPrintConfig & config, con
     }
     double volume = wipe_volume * (extruder_count == 2 ? plate_extruder_size : (plate_extruder_size - 1));
     if (extruder_count == 2) volume += filament_change_volume * (int) (plate_extruder_size / 2);
+    // Read from the passed plate config — m_print may not have been applied yet
+    // (fresh plates, CLI), in which case its PrintConfig still holds defaults.
+    const auto *purge_opt  = config.option<ConfigOptionBool>("purge_in_prime_tower");
+    const auto *semm_opt   = config.option<ConfigOptionBool>("single_extruder_multi_material");
+    const bool  semm_flush = purge_opt && purge_opt->value && semm_opt && semm_opt->value;
+    if (semm_flush) volume = WipeTower2::estimate_semm_flush_volume(config, plate_extruder_size);
     if (use_rib_wall) {
         depth = std::sqrt(volume / layer_height * extra_spacing);
         if (need_wipe_tower || plate_extruder_size > 1) {
@@ -2274,7 +2280,9 @@ Vec3d PartPlate::estimate_wipe_tower_size(const DynamicPrintConfig & config, con
         }
     }
     else {
-        depth  =  volume/ (layer_height * w) *extra_spacing;
+        depth = volume / (layer_height * w);
+        // The flush volumes already hold the spacing between wipes.
+        if (!semm_flush) depth *= extra_spacing;
         if (need_wipe_tower || depth > EPSILON) {
             float min_wipe_tower_depth = WipeTower::get_limit_depth_by_height(max_height);
             depth = std::max((double)min_wipe_tower_depth, depth);
@@ -3337,6 +3345,11 @@ BoundingBoxf3 PartPlate::get_build_volume(bool use_share)
     return plate_box;
 }
 
+Polygon PartPlate::get_shared_printable_polygon() const
+{
+	return m_extruder_areas.empty() ? Polygon::new_scale(m_shape) : get_shared_poly(m_extruder_areas);
+}
+
 bool PartPlate::contains(const Vec3d& point) const
 {
 	return m_bounding_box.contains(point);
@@ -4375,22 +4388,21 @@ void PartPlateList::set_default_wipe_tower_pos_for_plate(int plate_idx, bool ini
         f_volume_maps = wxGetApp().preset_bundle->get_default_nozzle_volume_types_for_filaments(filament_maps);
     }
     DynamicPrintConfig full_config = wxGetApp().preset_bundle->full_config(false, filament_maps, f_volume_maps);
-    const DynamicPrintConfig &print_cfg = wxGetApp().preset_bundle->prints.get_edited_preset().config;
-    float w = dynamic_cast<const ConfigOptionFloat *>(print_cfg.option("prime_tower_width"))->value;
+    float w = dynamic_cast<const ConfigOptionFloat *>(full_config.option("prime_tower_width"))->value;
     float v = dynamic_cast<const ConfigOptionFloat *>(full_config.option("prime_volume"))->value;
     bool enable_wrapping = false;
     const ConfigOptionBool *wrapping_opt = dynamic_cast<const ConfigOptionBool *>(full_config.option("enable_wrapping_detection"));
     if (wrapping_opt) enable_wrapping = wrapping_opt->value;
     int nozzle_nums = wxGetApp().preset_bundle->get_printer_extruder_count();
-    Vec3d wipe_tower_size = part_plate->estimate_wipe_tower_size(print_cfg, w, v, nozzle_nums, init_pos ? 2 : 0, false, enable_wrapping);
+    Vec3d wipe_tower_size = part_plate->estimate_wipe_tower_size(full_config, w, v, nozzle_nums, init_pos ? 2 : 0, false, enable_wrapping);
 
     if (!init_pos && (is_approx(wipe_tower_size(0), 0.0) || is_approx(wipe_tower_size(1), 0.0))) {
-        wipe_tower_size = part_plate->estimate_wipe_tower_size(print_cfg, w, v, nozzle_nums, 2, false, enable_wrapping);
+        wipe_tower_size = part_plate->estimate_wipe_tower_size(full_config, w, v, nozzle_nums, 2, false, enable_wrapping);
     }
 
     // Compute brim-aware margin: brim extends outward from tower position
     float brim_width = 0.f;
-    const ConfigOptionFloat *brim_opt = print_cfg.option<ConfigOptionFloat>("prime_tower_brim_width");
+    const ConfigOptionFloat *brim_opt = full_config.option<ConfigOptionFloat>("prime_tower_brim_width");
     if (brim_opt) {
         brim_width = brim_opt->value;
         if (brim_width < 0) brim_width = WipeTower::get_auto_brim_by_height((float) wipe_tower_size.z());
@@ -4412,6 +4424,18 @@ void PartPlateList::set_default_wipe_tower_pos_for_plate(int plate_idx, bool ini
         }
     }
 
+    // The bounding box above still allows a corner a delta or hexagonal bed does not have, and the
+    // prime tower is validated against the real outline — pull it onto the bed before storing.
+    {
+        Polygons bed{part_plate->get_shared_printable_polygon()};
+        bed.front().translate(Point(-scaled(plate_origin.x()), -scaled(plate_origin.y()))); // into the frame x/y live in
+        const BoundingBox tower(Point::new_scale(x, y),
+                                Point::new_scale(x + wipe_tower_size(0), y + wipe_tower_size(1)));
+        const Vec2f move = WipeTower::move_box_inside_polygon(tower, bed, scaled<coord_t>(margin));
+        x += move.x();
+        y += move.y();
+    }
+
     ConfigOptionFloat wt_x_opt(x);
     ConfigOptionFloat wt_y_opt(y);
     dynamic_cast<ConfigOptionFloats *>(proj_cfg.option("wipe_tower_x"))->set_at(&wt_x_opt, plate_idx, 0);
@@ -4421,8 +4445,6 @@ void PartPlateList::set_default_wipe_tower_pos_for_plate(int plate_idx, bool ini
 //this may be happened after machine changed
 void PartPlateList::reset_size(int width, int depth, int height, bool reload_objects, bool update_shapes)
 {
-	Vec3d origin1, origin2;
-
 	BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << boost::format(":before size: plate_width %1%, plate_depth %2%, plate_height %3%") % m_plate_width % m_plate_depth % m_plate_height;
 	BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << boost::format(":after size: plate_width %1%, plate_depth %2%, plate_height %3%") % width % depth % height;
 	if ((m_plate_width != width) || (m_plate_depth != depth) || (m_plate_height != height))

src/slic3r/GUI/PartPlate.hpp

@@ -425,6 +425,9 @@ public:
     const BoundingBox get_bounding_box_crd();
     BoundingBoxf3 get_plate_box() {return get_build_volume();}
     BoundingBoxf3 get_build_volume(bool use_share = false);
+    // Polygon counterpart of get_build_volume(true), in scaled world coordinates. The bounding box
+    // that one returns hides the corners a non-rectangular bed does not have.
+    Polygon get_shared_printable_polygon() const;
 
     const std::vector<BoundingBoxf3>& get_exclude_areas() { return m_exclude_bounding_box; }
 

src/slic3r/GUI/PhysicalPrinterDialog.cpp

@@ -25,7 +25,6 @@
 #include "GUI.hpp"
 #include "GUI_App.hpp"
 #include "MainFrame.hpp"
-#include "slic3r/Utils/NetworkAgentFactory.hpp"
 #include "format.hpp"
 #include "Tab.hpp"
 #include "wxExtensions.hpp"
@@ -128,22 +127,8 @@ PhysicalPrinterDialog::~PhysicalPrinterDialog()
 void PhysicalPrinterDialog::build_printhost_settings(ConfigOptionsGroup* m_optgroup)
 {
     m_optgroup->m_on_change = [this](t_config_option_key opt_key, boost::any value) {
-        // Special handling for printer_agent: convert fake enum index to string agent ID
-        if (opt_key == "printer_agent") {
-            try {
-                int selected_idx = boost::any_cast<int>(value);
-                auto agents = NetworkAgentFactory::get_registered_printer_agents();
-                if (selected_idx >= 0 && selected_idx < static_cast<int>(agents.size())) {
-                    m_config->set_key_value("printer_agent",
-                                          new ConfigOptionString(agents[selected_idx].id));
-                }
-            } catch (const boost::bad_any_cast&) {
-                // If value is not an int, ignore
-            }
+        if (opt_key == "host_type" || opt_key == "printhost_authorization_type")
             this->update();
-        } else if (opt_key == "host_type" || opt_key == "printhost_authorization_type") {
-            this->update();
-        }
         if (opt_key == "print_host")
             this->update_printhost_buttons();
         if (opt_key == "printhost_port")
@@ -154,47 +139,6 @@ void PhysicalPrinterDialog::build_printhost_settings(ConfigOptionsGroup* m_optgr
 
     m_optgroup->append_single_option_line("host_type");
 
-    // Build printer agent dropdown from registry (only if network agent is available)
-    if (wxGetApp().getAgent() != nullptr) {
-        auto agents = NetworkAgentFactory::get_registered_printer_agents();
-
-        if (!agents.empty()) {
-            // Create a fake enum option to force a Choice widget instead of TextCtrl
-            // (printer_agent is coString in config, but we need a dropdown)
-            ConfigOptionDef def;
-            def.type    = coEnum;
-            def.width   = Field::def_width_wider();
-            def.label   = L("Printer Agent");
-            def.tooltip = L("Select the network agent implementation for printer communication. "
-                            "Available agents are registered at startup.");
-            def.mode    = comAdvanced;
-
-            // Populate enum values and labels from registered agents
-            for (const auto& agent : agents) {
-                def.enum_values.push_back(agent.id);
-                def.enum_labels.push_back(agent.display_name);
-            }
-
-            // Resolve selected agent: use config value if valid, otherwise fall back to default
-            std::string selected_agent = m_config->opt_string("printer_agent");
-            auto it = std::find_if(agents.begin(), agents.end(), [&selected_agent](const auto& a) { return a.id == selected_agent; });
-            if (it == agents.end()) {
-                selected_agent = ORCA_PRINTER_AGENT_ID;
-                it = std::find_if(agents.begin(), agents.end(), [&selected_agent](const auto& a) { return a.id == selected_agent; });
-            }
-
-            if (it != agents.end()) {
-                size_t default_idx = std::distance(agents.begin(), it);
-                def.set_default_value(new ConfigOptionInt(static_cast<int>(default_idx)));
-            }
-
-            // Create and append the option line
-            auto agent_option = Option(def, "printer_agent");
-            Line agent_line   = m_optgroup->create_single_option_line(agent_option);
-            m_optgroup->append_line(agent_line);
-        }
-    }
-
     auto create_sizer_with_btn = [](wxWindow* parent, Button** btn, const std::string& icon_name, const wxString& label) {
         *btn = new Button(parent, label);
         (*btn)->SetStyle(ButtonStyle::Regular, ButtonType::Parameter);
@@ -725,7 +669,7 @@ void PhysicalPrinterDialog::update(bool printer_change)
                 }
 
                 // For bbl printers, show option to control the device tab
-                if (wxGetApp().preset_bundle->is_bbl_vendor()) {
+                if (wxGetApp().preset_bundle->is_bbl_vendor() || wxGetApp().app_config->get_bool("use_printer_agents")) {
                     m_optgroup->show_field("bbl_use_print_host_webui");
                     const bool use_print_host_webui = !current_webui.empty();
                     if (Field* printhost_webui_field = m_optgroup->get_field("bbl_use_print_host_webui"); printhost_webui_field) {
@@ -816,31 +760,6 @@ void PhysicalPrinterDialog::update_host_type(bool printer_change)
     }
 }
 
-void PhysicalPrinterDialog::update_printer_agent_type()
-{
-    if (m_config == nullptr)
-        return;
-
-    Field* agent_field = m_optgroup->get_field("printer_agent");
-    if (!agent_field)
-        return;
-
-    Choice* agent_choice = dynamic_cast<Choice*>(agent_field);
-    if (!agent_choice)
-        return;
-
-    // Sync selection with current config value
-    const std::string current_agent = m_config->opt_string("printer_agent");
-
-    auto agents = NetworkAgentFactory::get_registered_printer_agents();
-    for (size_t i = 0; i < agents.size(); ++i) {
-        if (agents[i].id == current_agent) {
-            agent_choice->set_value(i);
-            return;
-        }
-    }
-}
-
 void PhysicalPrinterDialog::update_printers()
 {
     wxBusyCursor wait;
@@ -894,11 +813,6 @@ void PhysicalPrinterDialog::OnOK(wxEvent& event)
 {
     wxGetApp().get_tab(Preset::TYPE_PRINTER)->save_preset("", false, false, true, m_preset_name);
     event.Skip();
-
-    // Defer printer agent switch to ensure preset save completes first
-    wxGetApp().CallAfter([] {
-        wxGetApp().switch_printer_agent();
-    });
 }
 
 }}    // namespace Slic3r::GUI

src/slic3r/GUI/PhysicalPrinterDialog.hpp

@@ -60,7 +60,6 @@ public:
 
     void        update(bool printer_change = false);
     void        update_host_type(bool printer_change);
-    void        update_printer_agent_type();
     void        update_preset_input();
     void        update_printhost_buttons();
     void        update_printers();

src/slic3r/GUI/Plater.cpp

@@ -3247,7 +3247,8 @@ void Sidebar::update_all_preset_comboboxes()
 
     auto p_mainframe = wxGetApp().mainframe;
     auto cfg = preset_bundle.printers.get_edited_preset().config;
-    const bool use_native_device_tab = preset_bundle.use_bbl_device_tab() || NetworkAgentFactory::is_current_printer_agent_plugin();
+    const bool use_printer_agents = wxGetApp().app_config->get_bool("use_printer_agents");
+    const bool use_native_device_tab = preset_bundle.use_bbl_device_tab() || use_printer_agents;
 
     if (preset_bundle.use_bbl_network()) {
         //only show connection button for not-BBL printer
@@ -3259,7 +3260,8 @@ void Sidebar::update_all_preset_comboboxes()
         p_mainframe->set_print_button_to_default(MainFrame::PrintSelectType::ePrintPlate);
     } else {
         //p->btn_connect_printer->Show();
-        p->m_printer_connect->Show();
+        // ORCA: hide the physical-printer connection button when printer agents are enabled
+        p->m_printer_connect->Show(!use_printer_agents);
 
         // ORCA: show/hide sync-ams button based on filament sync mode
         auto agent = wxGetApp().getAgent();
@@ -3281,10 +3283,14 @@ void Sidebar::update_all_preset_comboboxes()
             const auto host_type = cfg.option<ConfigOptionEnum<PrintHostType>>("host_type")->value;
             if (cfg.has("printhost_apikey") && (host_type != htSimplyPrint))
                 apikey = cfg.opt_string("printhost_apikey");
-            print_btn_type = preset_bundle.is_bbl_vendor() ? MainFrame::PrintSelectType::ePrintPlate : MainFrame::PrintSelectType::eSendGcode;
+            print_btn_type = (preset_bundle.is_bbl_vendor() || wxGetApp().app_config->get_bool("use_printer_agents"))
+                                 ? MainFrame::PrintSelectType::ePrintPlate
+                                 : MainFrame::PrintSelectType::eSendGcode;
         }
 
-        if (!use_native_device_tab)
+        if (use_printer_agents)
+            p_mainframe->load_printer_url();
+        else if (!use_native_device_tab)
             p_mainframe->load_printer_url(url, apikey);
 
 
@@ -3440,7 +3446,10 @@ void Sidebar::update_presets(Preset::Type preset_type)
 
         bool isBBL = preset_bundle.is_bbl_vendor();
         bool is_dual_extruder = extruder_variants->size() == 2;
-        p->layout_printer(preset_bundle.use_bbl_network(), isBBL && is_dual_extruder);
+        // why: agent mode drives the native device tab, so the sidebar lays out like BBL
+        // (no physical-printer connect button).
+        p->layout_printer(preset_bundle.use_bbl_network() || wxGetApp().app_config->get_bool("use_printer_agents"),
+                          isBBL && is_dual_extruder);
 
         // Update nozzle titles from printer config (e.g. "Main Nozzle" / "Auxiliary Nozzle" for N6)
         // UI left = DEPUTY_EXTRUDER_ID(1), UI right = MAIN_EXTRUDER_ID(0)
@@ -5631,6 +5640,7 @@ struct Plater::priv
     void on_action_slice_all(SimpleEvent&);
     void on_action_publish(wxCommandEvent &evt);
     void on_action_print_plate(SimpleEvent&);
+    void open_machine_select_dialog(int plate_idx, PrintFromType print_type = PrintFromType::FROM_NORMAL);
     void on_action_print_all(SimpleEvent&);
     void on_action_export_gcode(SimpleEvent&);
     void on_action_send_gcode(SimpleEvent&);
@@ -5779,6 +5789,8 @@ private:
     bool show_warning_dialog { false };
 };
 
+Plater::~Plater() = default;
+
 const std::regex Plater::priv::pattern_bundle(".*[.](amf|amf[.]xml|zip[.]amf|3mf)", std::regex::icase);
 const std::regex Plater::priv::pattern_3mf(".*3mf", std::regex::icase);
 const std::regex Plater::priv::pattern_zip_amf(".*[.]zip[.]amf", std::regex::icase);
@@ -5793,7 +5805,7 @@ bool PlaterDropTarget::OnDropFiles(wxCoord x, wxCoord y, const wxArrayString &fi
 #endif // WIN32
 
     m_mainframe.Raise();
-    m_mainframe.select_tab(size_t(MainFrame::tp3DEditor));
+    m_mainframe.select_tab(TAB_ID_PREPARE);
     if (wxGetApp().is_editor())
         m_plater.select_view_3D("3D");
 
@@ -6575,9 +6587,9 @@ void Plater::priv::select_next_view_3D()
 {
     
     if (current_panel == view3D)
-        wxGetApp().mainframe->select_tab(size_t(MainFrame::tpPreview));
+        wxGetApp().mainframe->select_tab(TAB_ID_PREVIEW);
     else if (current_panel == preview)
-        wxGetApp().mainframe->select_tab(size_t(MainFrame::tp3DEditor));
+        wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
 //    else if (current_panel == assemble_view)
 //        set_current_panel(view3D);
 }
@@ -7876,7 +7888,7 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
                 q->select_plate(first_plate_index);
                 //set to 3d tab
                 q->select_view_3D("Preview");
-                wxGetApp().mainframe->select_tab(MainFrame::tpPreview);
+                wxGetApp().mainframe->select_tab(TAB_ID_PREVIEW);
             }
             else {
                 //set to 3d tab
@@ -7895,7 +7907,7 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
     else {
         //always set to 3D after loading files
         q->select_view_3D("3D");
-        wxGetApp().mainframe->select_tab(MainFrame::tp3DEditor);
+        wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
     }
 
     if (load_model) {
@@ -8803,7 +8815,7 @@ void Plater::priv::process_validation_warning(StringObjectException const &warni
                           }
                       }
 
-                      wxGetApp().mainframe->select_tab(MainFrame::tp3DEditor);
+                      wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
 
                       if (inst_idx != -1) {
                          auto* model = wxGetApp().obj_list()->GetModel();
@@ -8832,7 +8844,7 @@ void Plater::priv::process_validation_warning(StringObjectException const &warni
             } else {
 		        auto iter = id.id ? std::find_if(objects.begin(), objects.end(), [id](auto o) { return o->id() == id; }) : objects.end();
                 if (iter != objects.end()) {
-                    wxGetApp().mainframe->select_tab(MainFrame::tp3DEditor);
+                    wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
 			        wxGetApp().obj_list()->select_items({{*iter, nullptr}});
                     wxGetApp().obj_list()->update_selections_on_canvas();
                 }
@@ -9513,7 +9525,7 @@ void Plater::priv::replace_all_with_stl()
         return;
     }
 
-    std::string status = _L("Replaced with 3D files from directory:\n").ToStdString() + out_path.string() + "\n\n";
+    wxString status = _L("Replaced with 3D files from directory:\n") + from_u8(out_path.string()) + "\n\n";
 
     for (unsigned int idx : volume_idxs) {
         const GLVolume* v = selection.get_volume(idx);
@@ -9533,13 +9545,13 @@ void Plater::priv::replace_all_with_stl()
         std::string volume_name = volume->name;
 
         if (new_path == input_path) {
-            status += boost::str(boost::format(_L("✖ Skipped %1%: same file.\n").ToStdString()) % volume_name);
+            status += wxString::Format(_L("✖ Skipped %s: same file.\n"), from_u8(volume_name));
             BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " skipping replace volume : same filename " << new_path;
             continue;
         }
 
         if (!fs::exists(new_path)) {
-            status += boost::str(boost::format(_L("✖ Skipped %1%: file does not exist.\n").ToStdString()) % volume_name);
+            status += wxString::Format(_L("✖ Skipped %s: file does not exist.\n"), from_u8(volume_name));
             BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " cannot replace volume : filen does not exist " << new_path;
             continue;
         }
@@ -9547,12 +9559,12 @@ void Plater::priv::replace_all_with_stl()
         BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " replacing volume : " << input_path << " with " << new_path;
 
         if (!replace_volume_with_stl(object_idx, volume_idx, new_path, _u8L("Replace with 3D file"))) {
-            status += boost::str(boost::format(_L("✖ Skipped %1%: failed to replace.\n").ToStdString()) % volume_name);
+            status += wxString::Format(_L("✖ Skipped %s: failed to replace.\n"), from_u8(volume_name));
             BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " cannot replace volume : failed to replace with " << new_path;
             continue;
         }
 
-        status += boost::str(boost::format(_L("✔ Replaced %1%.\n").ToStdString()) % volume_name);
+        status += wxString::Format(_L("✔ Replaced %s.\n"), from_u8(volume_name));
     }
 
     // update 3D scene
@@ -11186,18 +11198,23 @@ void Plater::priv::on_action_print_plate(SimpleEvent&)
     }
 
     PresetBundle& preset_bundle = *wxGetApp().preset_bundle;
-    if (preset_bundle.use_bbl_network()) {
-        // BBS
-        if (!m_select_machine_dlg)
-            m_select_machine_dlg = new SelectMachineDialog(q);
-        m_select_machine_dlg->set_print_type(PrintFromType::FROM_NORMAL);
-        m_select_machine_dlg->prepare(partplate_list.get_curr_plate_index());
-        m_select_machine_dlg->ShowModal();
+    if (preset_bundle.use_bbl_network() || wxGetApp().app_config->get_bool("use_printer_agents")) {
+        open_machine_select_dialog(partplate_list.get_curr_plate_index());
     } else {
         q->send_gcode_legacy(PLATE_CURRENT_IDX, nullptr);
     }
 }
 
+void Plater::priv::open_machine_select_dialog(int plate_idx, PrintFromType print_type)
+{
+    // BBS
+    if (!m_select_machine_dlg)
+        m_select_machine_dlg = new SelectMachineDialog(q);
+    m_select_machine_dlg->set_print_type(print_type);
+    m_select_machine_dlg->prepare(plate_idx);
+    m_select_machine_dlg->ShowModal();
+}
+
 void Plater::priv::on_action_send_to_multi_machine(SimpleEvent&)
 {
     if (!m_send_multi_dlg)
@@ -11213,10 +11230,7 @@ void Plater::priv::on_action_print_plate_from_sdcard(SimpleEvent&)
     }
 
     //BBS
-    if (!m_select_machine_dlg) m_select_machine_dlg = new SelectMachineDialog(q);
-    m_select_machine_dlg->set_print_type(PrintFromType::FROM_SDCARD_VIEW);
-    m_select_machine_dlg->prepare(0);
-    m_select_machine_dlg->ShowModal();
+    open_machine_select_dialog(0, PrintFromType::FROM_SDCARD_VIEW);
 }
 
 void Plater::priv::on_tab_selection_changing(wxBookCtrlEvent& e)
@@ -11228,16 +11242,22 @@ void Plater::priv::on_tab_selection_changing(wxBookCtrlEvent& e)
     }
 
     const int new_sel = e.GetSelection();
-    sidebar_layout.show = new_sel == MainFrame::tp3DEditor || new_sel == MainFrame::tpPreview;
+    if (new_sel == wxNOT_FOUND) {
+        // GetPage(new_sel) below needs a valid index.
+        e.Skip();
+        return;
+    }
+    const wxString new_name = main_frame->m_tabpanel->GetPageName(new_sel);
+    sidebar_layout.show = new_name == TAB_ID_PREPARE || new_name == TAB_ID_PREVIEW;
     update_sidebar();
     int old_sel = e.GetOldSelection();
-    const bool is_printer_agent_plugin = NetworkAgentFactory::is_current_printer_agent_plugin();
+    const bool use_printer_agents = wxGetApp().app_config->get_bool("use_printer_agents");
     const bool use_native_device_tab = wxGetApp().preset_bundle &&
-        (wxGetApp().preset_bundle->use_bbl_device_tab() || is_printer_agent_plugin);
-    if (use_native_device_tab && new_sel == MainFrame::tpMonitor) {
+        (wxGetApp().preset_bundle->use_bbl_device_tab() || use_printer_agents);
+    if (use_native_device_tab && new_name == TAB_ID_MONITOR) {
         // BBL network module is only required for BBL-vendor printers.
         // Non-BBL Python plugins (e.g. moonraker) drive the Device tab without it.
-        if (!is_printer_agent_plugin && wxGetApp().preset_bundle->is_bbl_vendor() && !Slic3r::NetworkAgent::is_network_module_loaded()) {
+        if (!use_printer_agents && wxGetApp().preset_bundle->is_bbl_vendor() && !Slic3r::NetworkAgent::is_network_module_loaded()) {
             e.Veto();
             BOOST_LOG_TRIVIAL(info) << boost::format("skipped tab switch from %1% to %2%, lack of network plugins") % old_sel % new_sel;
             if (q) {
@@ -11246,9 +11266,17 @@ void Plater::priv::on_tab_selection_changing(wxBookCtrlEvent& e)
             }
         }
     } else {
-        if (new_sel == MainFrame::tpMonitor && wxGetApp().preset_bundle != nullptr) {
+        // Pointer test, not a name lookup: in printer-agents mode this page is TAB_ID_MONITOR_WEB
+        // while the native Device tab holds TAB_ID_MONITOR, and in legacy-web mode it holds
+        // TAB_ID_MONITOR itself.
+        const bool selecting_web_device_tab = main_frame->m_printer_view &&
+            main_frame->m_tabpanel->GetPage(new_sel) == main_frame->m_printer_view;
+        if (selecting_web_device_tab) {
+            // Use the selected discovered machine when the preset has no host.
+            main_frame->load_printer_url();
+        } else if (new_name == TAB_ID_MONITOR && wxGetApp().preset_bundle != nullptr) {
             auto     cfg = wxGetApp().preset_bundle->printers.get_edited_preset().config;
-            wxString url = cfg.opt_string("print_host_webui").empty() ? cfg.opt_string("print_host") : cfg.opt_string("print_host_webui");
+            wxString url = from_u8(PrintHost::get_print_host_webui(&cfg));
             if (main_frame->m_printer_view && url.empty()) {
                 // It's missing_connection page, reload so that we can replay the gif image
                 main_frame->m_printer_view->reload();
@@ -11293,13 +11321,8 @@ void Plater::priv::on_action_print_all(SimpleEvent&)
     }
 
     PresetBundle& preset_bundle = *wxGetApp().preset_bundle;
-    if (preset_bundle.use_bbl_network()) {
-        // BBS
-        if (!m_select_machine_dlg)
-            m_select_machine_dlg = new SelectMachineDialog(q);
-        m_select_machine_dlg->set_print_type(PrintFromType::FROM_NORMAL);
-        m_select_machine_dlg->prepare(PLATE_ALL_IDX);
-        m_select_machine_dlg->ShowModal();
+    if (preset_bundle.use_bbl_network() || wxGetApp().app_config->get_bool("use_printer_agents")) {
+        open_machine_select_dialog(PLATE_ALL_IDX);
     } else {
         q->send_gcode_legacy(PLATE_ALL_IDX, nullptr);
     }
@@ -12114,7 +12137,7 @@ bool Plater::priv::check_ams_status_impl(bool is_slice_all)
                         wxPostEvent(q, SimpleEvent(EVT_GLTOOLBAR_SLICE_ALL));
                     else
                         wxPostEvent(q, SimpleEvent(EVT_GLTOOLBAR_SLICE_PLATE));
-                    wxGetApp().mainframe->m_tabpanel->SetSelection(MainFrame::TabPosition::tpPreview);
+                    wxGetApp().mainframe->m_tabpanel->SelectPageByName(TAB_ID_PREVIEW);
                 }
                 return false;
             }
@@ -12714,7 +12737,7 @@ void Plater::priv::take_snapshot(const std::string& snapshot_name, const UndoRed
             ModelWipeTower& tower = model.wipe_tower;
 
             tower.positions[plate_idx] = Vec2d(tower_x_opt->get_at(plate_idx), tower_y_opt->get_at(plate_idx));
-            tower.rotation = proj_cfg.opt_float("wipe_tower_rotation_angle");
+            tower.rotation = config.opt_float("wipe_tower_rotation_angle");
         }
     }
     const GLGizmosManager& gizmos = get_current_canvas3D()->get_canvas_type() == GLCanvas3D::CanvasAssembleView ? assemble_view->get_canvas3d()->get_gizmos_manager() : view3D->get_canvas3d()->get_gizmos_manager();
@@ -12824,7 +12847,7 @@ void Plater::priv::undo_redo_to(std::vector<UndoRedo::Snapshot>::const_iterator
             ModelWipeTower& tower = model.wipe_tower;
 
             tower.positions[plate_idx] = Vec2d(tower_x_opt->get_at(plate_idx), tower_y_opt->get_at(plate_idx));
-            tower.rotation = proj_cfg.opt_float("wipe_tower_rotation_angle");
+            tower.rotation = config.opt_float("wipe_tower_rotation_angle");
         }
     }
     const int layer_range_idx = it_snapshot->snapshot_data.layer_range_idx;
@@ -13103,7 +13126,7 @@ int Plater::new_project(bool skip_confirm, bool silent, const wxString& project_
     get_notification_manager()->clear_all();
 
     if (!silent)
-        wxGetApp().mainframe->select_tab(MainFrame::tp3DEditor);
+        wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
 
     //get_partplate_list().reinit();
     //get_partplate_list().update_slice_context_to_current_plate(p->background_process);
@@ -13252,7 +13275,7 @@ void Plater::load_project(wxString const& filename2,
     if (!m_exported_file) {
         p->select_view("topfront");
         p->camera.requires_zoom_to_plate = REQUIRES_ZOOM_TO_ALL_PLATE;
-        wxGetApp().mainframe->select_tab(MainFrame::tp3DEditor);
+        wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
     }
     else {
         p->partplate_list.select_plate_view();
@@ -13366,7 +13389,7 @@ void Plater::import_model_id(wxString download_info)
     const int max_retries = 3;
 
     /* jump to 3D eidtor */
-    wxGetApp().mainframe->select_tab((size_t)MainFrame::TabPosition::tp3DEditor);
+    wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
 
     /* prepare progress dialog */
     bool cont = true;
@@ -13848,7 +13871,7 @@ void Plater::calib_pa(const Calib_Params& params)
     }
     const auto calib_pa_name = wxString::Format(L"Pressure Advance Test");
     new_project(false, false, calib_pa_name);
-    wxGetApp().mainframe->select_tab(size_t(MainFrame::tp3DEditor));
+    wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
     auto print_config = &wxGetApp().preset_bundle->prints.get_edited_preset().config;
     auto printer_config = &wxGetApp().preset_bundle->printers.get_edited_preset().config;
     print_config->set_key_value("overhang_reverse", new ConfigOptionBool(false));
@@ -14330,7 +14353,7 @@ void Plater::calib_flowrate(bool is_linear, int pass, InfillPattern pattern) {
     if (new_project(false, false, calib_name) == wxID_CANCEL)
         return;
 
-    wxGetApp().mainframe->select_tab(size_t(MainFrame::tp3DEditor));
+    wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
 
     if (is_linear) {
         if (pass == 1)
@@ -14369,7 +14392,7 @@ void Plater::calib_temp(const Calib_Params& params) {
 
     const auto calib_temp_name = wxString::Format(L"Nozzle temperature test");
     new_project(false, false, calib_temp_name);
-    wxGetApp().mainframe->select_tab(size_t(MainFrame::tp3DEditor));
+    wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
     if (params.mode != CalibMode::Calib_Temp_Tower)
         return;
 
@@ -14645,7 +14668,7 @@ void Plater::calib_max_vol_speed(const Calib_Params& params)
 {
     const auto calib_vol_speed_name = wxString::Format(L"Max volumetric speed test");
     new_project(false, false, calib_vol_speed_name);
-    wxGetApp().mainframe->select_tab(size_t(MainFrame::tp3DEditor));
+    wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
     if (params.mode != CalibMode::Calib_Vol_speed_Tower)
         return;
     if (!add_model(false, Slic3r::resources_dir() + "/calib/volumetric_speed/SpeedTestStructure.drc"))
@@ -14726,7 +14749,7 @@ void Plater::calib_retraction(const Calib_Params& params)
 {
     const auto calib_retraction_name = wxString::Format(L"Retraction");
     new_project(false, false, calib_retraction_name);
-    wxGetApp().mainframe->select_tab(size_t(MainFrame::tp3DEditor));
+    wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
     if (params.mode != CalibMode::Calib_Retraction_tower)
         return;
 
@@ -14787,7 +14810,7 @@ void Plater::calib_VFA(const Calib_Params& params)
 {
     const auto calib_vfa_name = wxString::Format(L"VFA test");
     new_project(false, false, calib_vfa_name);
-    wxGetApp().mainframe->select_tab(size_t(MainFrame::tp3DEditor));
+    wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
     if (params.mode != CalibMode::Calib_VFA_Tower)
         return;
 
@@ -14871,7 +14894,7 @@ void Plater::calib_input_shaping_freq(const Calib_Params& params)
 {
     const auto calib_input_shaping_name = wxString::Format(L"Input shaping Frequency test");
     new_project(false, false, calib_input_shaping_name);
-    wxGetApp().mainframe->select_tab(size_t(MainFrame::tp3DEditor));
+    wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
     if (params.mode != CalibMode::Calib_Input_shaping_freq)
         return;
 
@@ -14940,7 +14963,7 @@ void Plater::calib_input_shaping_damp(const Calib_Params& params)
 {
     const auto calib_input_shaping_name = wxString::Format(L"Input shaping Damping test");
     new_project(false, false, calib_input_shaping_name);
-    wxGetApp().mainframe->select_tab(size_t(MainFrame::tp3DEditor));
+    wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
     if (params.mode != CalibMode::Calib_Input_shaping_damp)
         return;
 
@@ -15008,7 +15031,7 @@ void Plater::Calib_Cornering(const Calib_Params& params)
 {
     const auto Calib_Cornering = wxString::Format(L"Cornering test");
     new_project(false, false, Calib_Cornering);
-    wxGetApp().mainframe->select_tab(size_t(MainFrame::tp3DEditor));
+    wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
     if (params.mode != CalibMode::Calib_Cornering)
         return;
 
@@ -15144,7 +15167,7 @@ void Plater::load_gcode(const wxString& filename)
     //p->gcode_result.reset();
     //reset_gcode_toolpaths();
     p->preview->reload_print(m_only_gcode);
-    wxGetApp().mainframe->select_tab(MainFrame::tpPreview);
+    wxGetApp().mainframe->select_tab(TAB_ID_PREVIEW);
     p->set_current_panel(p->preview, true);
     p->get_current_canvas3D()->render();
     //p->notification_manager->bbl_show_plateinfo_notification(into_u8(_L("Preview only mode for gcode file.")));
@@ -15831,7 +15854,7 @@ LoadType determine_load_type(std::string filename, std::string override_setting)
             wxGetApp().app_config->set("import_project_action", std::to_string(choice));
 
             // BBS: jump to plater panel
-            wxGetApp().mainframe->select_tab(MainFrame::tp3DEditor);
+            wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
             return load_type;
         }
 
@@ -16060,7 +16083,7 @@ void Plater::reset_with_confirm()
                                             .ShowModal() == wxID_YES) {
         reset();
         // BBS: jump to plater panel
-        wxGetApp().mainframe->select_tab(size_t(0));
+        wxGetApp().mainframe->select_tab(TAB_ID_HOME);
     }
 }
 
@@ -17874,7 +17897,7 @@ int Plater::export_config_3mf(int plate_idx, Export3mfProgressFn proFn)
 //BBS
 void Plater::send_calibration_job_finished(wxCommandEvent & evt)
 {
-    p->main_frame->request_select_tab(MainFrame::TabPosition::tpCalibration);
+    p->main_frame->request_select_tab(TAB_ID_CALIBRATION);
     auto calibration_panel = p->main_frame->m_calibration;
     if (calibration_panel) {
         auto curr_wizard = static_cast<CalibrationWizard*>(calibration_panel->get_tabpanel()->GetPage(evt.GetInt()));
@@ -17906,7 +17929,7 @@ void Plater::print_job_finished(wxCommandEvent &evt)
     if (!dev) return;
 
     dev->set_selected_machine(evt.GetString().ToStdString());
-    p->main_frame->request_select_tab(MainFrame::TabPosition::tpMonitor);
+    p->main_frame->request_select_tab(TAB_ID_MONITOR);
     //jump to monitor and select device status panel
     MonitorPanel* curr_monitor = p->main_frame->m_monitor;
     if(curr_monitor)
@@ -17921,7 +17944,7 @@ void Plater::send_job_finished(wxCommandEvent& evt)
 
     send_gcode_finish(evt.GetString());
     p->hide_send_to_printer_dlg();
-    //p->main_frame->request_select_tab(MainFrame::TabPosition::tpMonitor);
+    //p->main_frame->request_select_tab(TAB_ID_MONITOR);
     ////jump to monitor and select device status panel
     //MonitorPanel* curr_monitor = p->main_frame->m_monitor;
     //if (curr_monitor)
@@ -18815,7 +18838,7 @@ void Plater::pop_warning_and_go_to_device_page(wxString printer_name, PrinterWar
     MessageDialog dlg(this, content, title, wxOK | wxFORWARD | wxICON_WARNING, _L("Device Page"));
     auto          result = dlg.ShowModal();
     if (result == wxFORWARD) {
-        wxGetApp().mainframe->select_tab(size_t(MainFrame::tpMonitor));
+        wxGetApp().mainframe->select_tab(TAB_ID_MONITOR);
     }
 }
 

src/slic3r/GUI/Plater.hpp

@@ -290,7 +290,7 @@ public:
     Plater(const Plater &) = delete;
     Plater &operator=(Plater &&) = delete;
     Plater &operator=(const Plater &) = delete;
-    ~Plater() = default;
+    ~Plater();
 
     bool Show(bool show = true);
 
@@ -1026,4 +1026,4 @@ wxArrayString get_all_camera_view_type();
 } // namespace GUI
 } // namespace Slic3r
 
-#endif
+#endif

src/slic3r/GUI/PluginWebDialog.cpp

@@ -15,39 +15,6 @@ namespace Slic3r { namespace GUI {
 
 namespace {
 
-// Low-specificity element defaults (no !important) for UNSTYLED plugin HTML, so a bare
-// plugin page looks native while any CSS the plugin ships still wins. Built on the
-// --orca-* variables the host injects (see WebViewHostDialog); document-start injected
-// AFTER the host contract so the variables are defined (shares the base injector's
-// WebView2 timing guard).
-std::string plugin_defaults_user_script()
-{
-    std::string css;
-    css += "<style id=\"orca-plugin-defaults\">";
-    css += "html,body{background:var(--orca-bg);color:var(--orca-fg);"
-           "font-family:var(--orca-font);font-size:13px;}";
-    css += "body{margin:0;}";
-    css += "h1,h2,h3,h4,h5,h6{color:var(--orca-fg);font-weight:600;}";
-    css += "a{color:var(--orca-accent);}";
-    css += "hr{border:0;border-top:1px solid var(--orca-border);}";
-    css += "button{font:inherit;color:var(--orca-accent-fg);background:var(--orca-accent);"
-           "border:1px solid var(--orca-accent);border-radius:4px;padding:5px 14px;cursor:pointer;}";
-    css += "button:hover{filter:brightness(1.1);}";
-    css += "button:disabled{opacity:.5;cursor:default;}";
-    css += "input,select,textarea{font:inherit;color:var(--orca-fg);"
-           "background:var(--orca-bg);border:1px solid var(--orca-border);"
-           "border-radius:4px;padding:4px 8px;}";
-    css += "input:focus,select:focus,textarea:focus{outline:none;border-color:var(--orca-accent);}";
-    css += "table{border-collapse:collapse;}";
-    css += "th,td{text-align:left;padding:6px 10px;border-bottom:1px solid var(--orca-border);}";
-    css += "th{color:var(--orca-muted);font-weight:600;}";
-    css += "::-webkit-scrollbar{width:12px;height:12px;}";
-    css += "::-webkit-scrollbar-thumb{background:var(--orca-border);border-radius:6px;}";
-    css += "::-webkit-scrollbar-track{background:transparent;}";
-    css += "</style>";
-    return WebViewHostDialog::document_start_injector(css, "orca-plugin-defaults", "beforeend");
-}
-
 // Injected into the top-level page at document start (before the plugin's own
 // scripts). Defines window.orca as the only host surface the page may use. It
 // references window.wx lazily (at call time) so it never races the backend's
@@ -129,7 +96,7 @@ PluginWebDialog::PluginWebDialog(wxWindow*          parent,
 void PluginWebDialog::add_user_scripts()
 {
     if (wxWebView* wv = browser()) {
-        wv->AddUserScript(wxString::FromUTF8(plugin_defaults_user_script()));
+        wv->AddUserScript(wxString::FromUTF8(WebViewHostDialog::plugin_defaults_user_script()));
         wv->AddUserScript(ORCA_BRIDGE_JS);
     }
 }

src/slic3r/GUI/Preferences.cpp

@@ -79,7 +79,7 @@ public:
         Bind(wxEVT_LEFT_DOWN,    &WikiLabel::OnLeftDown, this);
     }
 
-    void SetLabel(const wxString& label)
+    void SetLabel(const wxString& label) override
     {
         m_label = label;
         m_last_wrap_width = -1; // force re-wrap
@@ -1135,6 +1135,14 @@ wxBoxSizer *PreferencesDialog::create_item_checkbox(wxString title, wxString too
             wxGetApp().plater()->sidebar().update_presets(Preset::TYPE_FILAMENT);
         }
 
+        if (param == "use_printer_agents")
+        {
+            // Rebuild the Device tab so the native/web-UI choice reflects the new flag
+            // immediately, instead of only on the next printer-preset change or restart.
+            if (wxGetApp().plater())
+                wxGetApp().plater()->sidebar().update_all_preset_comboboxes();
+        }
+
         if (param == "enable_high_low_temp_mixed_printing") {
             if (checkbox->GetValue()) {
                 const wxString warning_title = _L("Bed Temperature Difference Warning");
@@ -1740,11 +1748,26 @@ void PreferencesDialog::create_items()
     g_sizer->Add(item_pop_up_filament_map_dialog);
 #endif
 
+    //// GENERAL > Plugins
+    g_sizer->Add(create_item_title(_L("Plugins")), 1, wxEXPAND);
+
+    auto item_plugin_pages_visible_count = create_item_spinctrl(
+        _L("Visible plugin pages"),
+        "",
+        _L("pages"),
+        _L("Number of plugin pages shown as fixed tabs before the remaining pages collapse into a dropdown on the last tab."),
+        SETTING_PLUGIN_PAGES_VISIBLE_COUNT,
+        PLUGIN_PAGES_VISIBLE_COUNT_MIN,
+        PLUGIN_PAGES_VISIBLE_COUNT_MAX,
+        [](int value) { wxGetApp().mainframe->plugin_pages().set_visible_page_count(value); }
+    );
+    g_sizer->Add(item_plugin_pages_visible_count);
+
     g_sizer->AddSpacer(FromDIP(10));
     sizer_page->Add(g_sizer, 0, wxEXPAND);
 
     //////////////////////////
-    //// CONTROL TAB 
+    //// CONTROL TAB
     /////////////////////////////////////
     m_pref_tabs->AppendItem(_L("Control"));
     f_sizers.push_back(new wxFlexGridSizer(1, 1, v_gap, 0));
@@ -2101,6 +2124,12 @@ void PreferencesDialog::create_items()
     auto item_show_unsupported = create_item_checkbox(_L("Show unsupported presets"), _L("Show incompatible/unsupported presets in the printer and filament dropdown lists. These presets cannot be selected."), "show_unsupported_presets");
     g_sizer->Add(item_show_unsupported);
 
+    auto item_plugin_printer_agents = create_item_checkbox(
+        _L("(Experimental) Use printer agents instead of print hosts"), _L(
+            "Route print jobs for non-Bambu printers through printer plug-in agents instead of the classic print-host upload flow.\nWhen disabled, OrcaSlicer uses the legacy print-host behavior."),
+        "use_printer_agents");
+    g_sizer->Add(item_plugin_printer_agents);
+
     //// DEVELOPER > Experimental Features
     g_sizer->Add(create_item_title(_L("Experimental Features")), 1, wxEXPAND);
 

src/slic3r/GUI/PresetComboBoxes.cpp

@@ -865,6 +865,9 @@ PlaterPresetComboBox::PlaterPresetComboBox(wxWindow *parent, Preset::Type preset
         clr_picker = new wxBitmapButton(parent, wxID_ANY, {}, wxDefaultPosition, wxSize(FromDIP(20), FromDIP(20)), wxBU_EXACTFIT | wxBU_AUTODRAW | wxBORDER_NONE);
         clr_picker->SetBackgroundColour(StateColor::darkModeColorFor(*wxWHITE));
         clr_picker->SetToolTip(_L("Click to select filament color"));
+#ifdef __WXGTK__
+        RemoveButtonBorder(clr_picker);
+#endif
         clr_picker->Bind(wxEVT_BUTTON, [this](wxCommandEvent& e) {
             // Check if it's an official filament
             auto fila_type = Preset::remove_suffix_modified(GetValue().ToUTF8().data());
@@ -1039,7 +1042,7 @@ bool PlaterPresetComboBox::switch_to_tab()
 
     //BBS  Select NoteBook Tab params
     if (tab->GetParent() == wxGetApp().params_panel())
-        wxGetApp().mainframe->select_tab(MainFrame::tp3DEditor);
+        wxGetApp().mainframe->select_tab(TAB_ID_PREPARE);
     else {
         wxGetApp().params_dialog()->Popup();
         tab->OnActivate();

src/slic3r/GUI/PresetComboBoxes.hpp

@@ -39,7 +39,7 @@ public:
     PresetComboBox(wxWindow* parent, Preset::Type preset_type, const wxSize& size = wxDefaultSize, PresetBundle* preset_bundle = nullptr);
     ~PresetComboBox();
 
-	enum LabelItemType {
+	enum LabelItemType : std::size_t {
 		LABEL_ITEM_PHYSICAL_PRINTER = 0xffffff01,
         LABEL_ITEM_PRINTER_MODELS,
 		LABEL_ITEM_DISABLED,

src/slic3r/GUI/PrintHostDialogs.hpp

@@ -163,7 +163,7 @@ public:
     BedType      bedType() const { return m_BedType; }
 
     virtual void                               init() override;
-    virtual std::map<std::string, std::string> extendedInfo() const
+    virtual std::map<std::string, std::string> extendedInfo() const override
     {
         return {{"bedType", std::to_string(static_cast<int>(m_BedType))},
                 {"timeLapse", std::to_string(m_timeLapse)},
@@ -200,7 +200,7 @@ public:
                                 PrintHost*                     printhost);
 
     virtual void                               init() override;
-    virtual std::map<std::string, std::string> extendedInfo() const;
+    virtual std::map<std::string, std::string> extendedInfo() const override;
 
 private:
     static constexpr const char* CONFIG_KEY_ENABLESELFTEST = "crealityprint_enable_self_test";

src/slic3r/GUI/Project.cpp

@@ -74,7 +74,18 @@ ProjectPanel::ProjectPanel(wxWindow *parent, wxWindowID id, const wxPoint &pos,
     Fit();
 }
 
-ProjectPanel::~ProjectPanel() {}
+ProjectPanel::~ProjectPanel()
+{
+    shutdown();
+}
+
+void ProjectPanel::shutdown()
+{
+    m_reload_cancel_token->store(true, std::memory_order_release);
+    if (m_reload_task && m_reload_task->joinable())
+        m_reload_task->join();
+    m_reload_task.reset();
+}
 
 // Helper to convert newlines to <br>
 static std::string convert_newlines_to_br(const std::string& text) {
@@ -101,7 +112,17 @@ void ProjectPanel::onWebNavigating(wxWebViewEvent& evt)
 
 void ProjectPanel::on_reload(wxCommandEvent& evt)
 {
-    boost::thread reload = boost::thread([this] {
+    if (wxTheApp == nullptr || wxGetApp().is_closing() ||
+        m_reload_cancel_token->load(std::memory_order_acquire))
+        return;
+
+    if (m_reload_task && m_reload_task->joinable())
+        m_reload_task->join();
+
+    const auto cancel_token = m_reload_cancel_token;
+    m_reload_task = std::make_unique<boost::thread>([this, cancel_token] {
+        if (cancel_token->load(std::memory_order_acquire) || wxTheApp == nullptr || wxGetApp().is_closing())
+            return;
         std::string update_type;
         std::string license;
         std::string model_name;
@@ -115,6 +136,9 @@ void ProjectPanel::on_reload(wxCommandEvent& evt)
 
         std::map<std::string, std::vector<json>> files;
 
+        if (wxGetApp().plater() == nullptr)
+            return;
+
         Model model = wxGetApp().plater()->model();
 
         auto model_info = model.model_info;
@@ -156,7 +180,14 @@ void ProjectPanel::on_reload(wxCommandEvent& evt)
         std::string file_path = encode_path(wxGetApp().plater()->model().get_auxiliary_file_temp_path().c_str());
         if (!file_path.empty()) {
             files = Reload(file_path);
-            wxGetApp().CallAfter([this, file_path, files] { m_auxiliary->Reload(file_path, files); });
+            if (cancel_token->load(std::memory_order_acquire) || wxTheApp == nullptr || wxGetApp().is_closing())
+                return;
+
+            wxGetApp().CallAfter([this, cancel_token, file_path, files] {
+                if (cancel_token->load(std::memory_order_acquire) || wxTheApp == nullptr || wxGetApp().is_closing())
+                    return;
+                m_auxiliary->Reload(file_path, files);
+            });
         } else {
             clear_model_info();
             return;
@@ -215,15 +246,18 @@ void ProjectPanel::on_reload(wxCommandEvent& evt)
 
         json m_Res = json::object();
         m_Res["command"] = "show_3mf_info";
-        m_Res["sequence_id"] = std::to_string(ProjectPanel::m_sequence_id++);
+        m_Res["sequence_id"] = std::to_string(ProjectPanel::m_sequence_id.fetch_add(1, std::memory_order_relaxed));
         m_Res["model"] = j;
 
         wxString strJS = wxString::Format("HandleStudio(%s)", m_Res.dump(-1, ' ', false, json::error_handler_t::ignore));
 
-        if (m_web_init_completed) {
-            wxGetApp().CallAfter([this, strJS] {
+        if (m_web_init_completed.load(std::memory_order_acquire) &&
+            !cancel_token->load(std::memory_order_acquire) && wxTheApp != nullptr && !wxGetApp().is_closing()) {
+            wxGetApp().CallAfter([this, cancel_token, strJS] {
+                if (cancel_token->load(std::memory_order_acquire) || wxTheApp == nullptr || wxGetApp().is_closing())
+                    return;
                 RunScript(strJS.ToStdString());
-                });
+            });
         }
     });
 }
@@ -264,7 +298,7 @@ void ProjectPanel::OnScriptMessage(wxWebViewEvent& evt)
             }
         }
         else if (strCmd == "request_3mf_info") {
-            m_web_init_completed = true;
+            m_web_init_completed.store(true, std::memory_order_release);
         }
         else if (strCmd == "edit_project_info") {
             show_info_editor(true);
@@ -307,13 +341,20 @@ void ProjectPanel::update_model_data()
 
 void ProjectPanel::clear_model_info()
 {
+    if (wxTheApp == nullptr || wxGetApp().is_closing() ||
+        m_reload_cancel_token->load(std::memory_order_acquire))
+        return;
+
     json m_Res = json::object();
     m_Res["command"] = "clear_3mf_info";
-    m_Res["sequence_id"] = std::to_string(ProjectPanel::m_sequence_id++);
+    m_Res["sequence_id"] = std::to_string(ProjectPanel::m_sequence_id.fetch_add(1, std::memory_order_relaxed));
 
     wxString strJS = wxString::Format("HandleStudio(%s)", m_Res.dump(-1, ' ', false, json::error_handler_t::ignore));
 
-    wxGetApp().CallAfter([this, strJS] {
+    const auto cancel_token = m_reload_cancel_token;
+    wxGetApp().CallAfter([this, cancel_token, strJS] {
+        if (cancel_token->load(std::memory_order_acquire) || wxTheApp == nullptr || wxGetApp().is_closing())
+            return;
         RunScript(strJS.ToStdString());
     });
 }

src/slic3r/GUI/Project.hpp

@@ -26,9 +26,11 @@
 #include "nlohmann/json.hpp"
 #include "slic3r/Utils/json_diff.hpp"
 
+#include <atomic>
 #include <map>
 #include <vector>
 #include <memory>
+#include <boost/thread.hpp>
 #include "Event.hpp"
 #include "libslic3r/ProjectTask.hpp"
 #include "wxExtensions.hpp"
@@ -60,14 +62,17 @@ struct project_file{
 class ProjectPanel : public wxPanel
 {
 private:
-    bool       m_web_init_completed = {false};
+    std::atomic<bool> m_web_init_completed{false};
     bool       m_reload_already = {false};
 
+    std::shared_ptr<std::atomic<bool>> m_reload_cancel_token{std::make_shared<std::atomic<bool>>(false)};
+    std::unique_ptr<boost::thread> m_reload_task;
+
     wxWebView* m_browser = {nullptr};
     AuxiliaryPanel*   m_auxiliary{nullptr};
     wxString   m_project_home_url;
     wxString   m_root_dir;
-    static inline int m_sequence_id = 8000;
+    static inline std::atomic<int> m_sequence_id{8000};
 
     void show_info_editor(bool show);
     
@@ -75,6 +80,7 @@ private:
 public:
     ProjectPanel(wxWindow *parent, wxWindowID id = wxID_ANY, const wxPoint &pos = wxDefaultPosition, const wxSize &size = wxDefaultSize, long style = wxTAB_TRAVERSAL);
     ~ProjectPanel();
+    void shutdown();
 
     
     void onWebNavigating(wxWebViewEvent& evt);

src/slic3r/GUI/ReleaseNote.cpp

@@ -1991,7 +1991,7 @@ void InputIpAddressDialog::workerThreadFunc(std::string str_ip, std::string str_
         if (w.expired()) return;
 
         if (m_obj) {
-            m_obj->set_user_access_code(str_access_code);
+            m_obj->set_access_code(str_access_code);
             wxGetApp().getDeviceManager()->set_selected_machine(m_obj->get_dev_id());
         }
 
@@ -2055,6 +2055,11 @@ void InputIpAddressDialog::on_text(wxCommandEvent &evt)
 {
     auto str_ip              = m_input_ip->GetTextCtrl()->GetValue();
     auto str_access_code     = m_input_access_code->GetTextCtrl()->GetValue();
+
+    if (str_access_code.empty()) {
+        str_access_code = "88888888";
+    }
+
     auto str_name            = m_input_printer_name->GetTextCtrl()->GetValue().Strip(wxString::both);
     auto str_sn              = m_input_sn->GetTextCtrl()->GetValue().Strip(wxString::both);
     bool invalid_access_code = true;
@@ -2062,7 +2067,7 @@ void InputIpAddressDialog::on_text(wxCommandEvent &evt)
     for (char c : str_access_code) {
         if (!(('0' <= c && c <= '9') || ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))) {
             invalid_access_code = false;
-            return;
+            break;
         }
     }
 

src/slic3r/GUI/SavePresetDialog.cpp

@@ -112,12 +112,56 @@ SavePresetDialog::Item::Item(Preset::Type type, const std::string &suffix, wxBox
     sizer->Add(m_radio_group, 0, wxEXPAND | wxTOP | wxLEFT, BORDER_W);
 
     if (parent->m_mode == comDevelop) {
-        m_detach_checkbox = new wxCheckBox(parent, wxID_ANY, _L("Detach from parent"));
-        sizer->Add(m_detach_checkbox, 0, wxALIGN_LEFT | wxALL, BORDER_W);
-        // Set initial state (unchecked by default)
-        m_detach_checkbox->SetValue(m_detach);
-        // Bind the checkbox event to update the detach state for this item
-        m_detach_checkbox->Bind(wxEVT_CHECKBOX, [this](wxCommandEvent&) { m_detach = m_detach_checkbox->GetValue(); });
+        // A new user copy of a system preset inherits from the selected system preset.
+        const std::string parent_name = sel_preset.is_system ? sel_preset.name : sel_preset.inherits();
+        const bool        can_detach  = !parent_name.empty();
+
+        wxBoxSizer *detach_sizer = new wxBoxSizer(wxHORIZONTAL);
+
+        auto detach_tooltip  = _L("Copies all inherited values from the parent into this preset and removes the parent relationship. Presets compatible only with the parent may become unsupported.");
+
+        auto detach_checkbox = new ::CheckBox(parent);
+        detach_checkbox->SetToolTip(detach_tooltip);
+
+        auto detach_label    = new wxStaticText(parent, wxID_ANY, _L("Detach from parent"));
+        detach_label->SetFont(::Label::Body_14);
+        detach_label->SetToolTip(detach_tooltip);
+
+        detach_sizer->Add(detach_checkbox, 0, wxALIGN_LEFT | wxLEFT, BORDER_W);
+        detach_sizer->Add(detach_label   , 0, wxALIGN_CENTRE_VERTICAL | wxLEFT, FromDIP(5));
+        sizer->Add(detach_sizer, 0, wxEXPAND | wxTOP, BORDER_W);
+        sizer->AddSpacer(FromDIP(5));
+
+        const wxString parent_text = can_detach ? from_u8(parent_name) : _L("Unique preset");
+        auto parent_label          = new wxStaticText(parent, wxID_ANY, parent_text);
+        parent_label->SetFont(::Label::Body_12);
+        parent_label->SetForegroundColour(wxColour("#6B6B6B"));
+        parent_label->SetToolTip(can_detach ? _L("Parent preset") : _L("This preset does not inherit from another preset."));
+        sizer->Add(parent_label, 0, wxEXPAND | wxLEFT, BORDER_W + FromDIP(24));
+
+        sizer->AddSpacer(FromDIP(5));
+
+        if (!can_detach) {
+            detach_checkbox->Disable();
+            detach_label->SetForegroundColour(wxColour("#6B6B6B"));
+        } 
+        else {
+            // Set initial state (unchecked by default)
+            detach_checkbox->SetValue(m_detach);
+            // Bind the checkbox event to update the detach state for this item
+            detach_checkbox->Bind(wxEVT_TOGGLEBUTTON, [this, detach_checkbox](wxCommandEvent&) { m_detach = detach_checkbox->GetValue(); });
+
+            detach_label->SetForegroundColour(wxColour("#363636"));
+
+            auto on_toggle = [this, detach_checkbox]() {
+                detach_checkbox->SetValue(!detach_checkbox->GetValue());
+                wxCommandEvent ev(wxEVT_TOGGLEBUTTON, detach_checkbox->GetId());
+                ev.SetEventObject(detach_checkbox);
+                detach_checkbox->GetEventHandler()->ProcessEvent(ev);
+            };
+            detach_label->Bind(wxEVT_LEFT_DOWN,   [on_toggle](wxMouseEvent& e) {if(!e.LeftDClick()) on_toggle();});
+            detach_label->Bind(wxEVT_LEFT_DCLICK, [on_toggle](wxMouseEvent& e) {on_toggle();});
+        }
     }
     
     m_radio_group->Bind(wxEVT_COMMAND_RADIOBOX_SELECTED, [this](wxCommandEvent &e) {

src/slic3r/GUI/SavePresetDialog.hpp

@@ -75,7 +75,6 @@ class SavePresetDialog : public DPIDialog
         bool                m_save_to_project {false};
         RadioGroup*         m_radio_group; // ORCA
         bool                m_detach{false};
-        wxCheckBox*         m_detach_checkbox{nullptr};
 
         void update();
     };

src/slic3r/GUI/SelectMachine.cpp

@@ -1088,8 +1088,8 @@ void SelectMachineDialog::sync_ams_mapping_result(std::vector<FilamentInfo> &res
         }
     }
     relayout_nozzle_cards();
-    auto tab_index = (MainFrame::TabPosition) dynamic_cast<Notebook *>(wxGetApp().tab_panel())->GetSelection();
-    if (tab_index == MainFrame::TabPosition::tp3DEditor || tab_index == MainFrame::TabPosition::tpPreview) {
+    wxString tab_name = wxGetApp().tab_panel()->GetSelectedPageName();
+    if (tab_name == TAB_ID_PREPARE || tab_name == TAB_ID_PREVIEW) {
         updata_thumbnail_data_after_connected_printer();
     }
 }
@@ -3629,7 +3629,7 @@ void SelectMachineDialog::on_send_print()
         BOOST_LOG_TRIVIAL(error) << "build_nozzle_info errors";
     }
 
-    m_print_job->sdcard_state = obj_->GetStorage()->get_sdcard_state();    
+    m_print_job->sdcard_state = obj_->GetStorage()->get_sdcard_state();
     m_print_job->has_sdcard =  wxGetApp().app_config->get("allow_abnormal_storage") == "true"
             ? (m_print_job->sdcard_state == DevStorage::SdcardState::HAS_SDCARD_NORMAL
                || m_print_job->sdcard_state == DevStorage::SdcardState::HAS_SDCARD_ABNORMAL)
@@ -3868,12 +3868,11 @@ _compare_obj_names(MachineObject* obj1, MachineObject* obj2)
 }
 
 /*******************************************************************
-*@note   _collect_machine_list
-*@param  dev_manager -- the device manager
-*@param  sorted_machine_objs -- return the sorted machine objects
-*@param  best_one -- return the best one
-*/
-/*******************************************************************/
+* @note   _collect_machine_list
+* @param  dev_manager -- the device manager
+* @param  sorted_machine_objs -- return the sorted machine objects
+* @param  best_one -- return the best one
+*******************************************************************/
 static void
 _collect_sorted_machines(Slic3r::DeviceManager* dev_manager,
                          std::vector<MachineObject*>& sorted_machine_objs)
@@ -3913,7 +3912,7 @@ _collect_sorted_machines(Slic3r::DeviceManager* dev_manager,
     };
 
     // collect from user machine list
-    const auto& user_machine_list = dev_manager->get_my_machine_list();// user machine list
+    const auto& user_machine_list = dev_manager->get_my_machine_list(dev_manager->get_current_printer_agent_id());// user machine list
     for (const auto& elem : user_machine_list)
     {
         MachineObject* mobj = elem.second;

src/slic3r/GUI/SelectMachine.hpp

@@ -522,7 +522,7 @@ public:
     bool is_timeout();
     int  update_print_required_data(Slic3r::DynamicPrintConfig config, Slic3r::Model model, Slic3r::PlateDataPtrs plate_data_list, std::string file_name, std::string file_path);
     void set_print_type(PrintFromType type) {m_print_type = type;};
-    bool Show(bool show);
+    bool Show(bool show) override;
     void show_init();
     bool do_ams_mapping(MachineObject *obj_,bool use_ams);
     bool get_ams_mapping_result(std::string& mapping_array_str, std::string& mapping_array_str2, std::string& ams_mapping_info) const;

src/slic3r/GUI/SelectMachinePop.cpp

@@ -501,6 +501,7 @@ void SelectMachinePopup::update_other_devices()
     DeviceManager* dev = wxGetApp().getDeviceManager();
     if (!dev) return;
     m_free_machine_list = dev->get_local_machinelist();
+    const std::string current_agent_id = dev->get_current_printer_agent_id();
 
     BOOST_LOG_TRIVIAL(trace) << "SelectMachinePopup update_other_devices start";
     this->Freeze();
@@ -512,6 +513,10 @@ void SelectMachinePopup::update_other_devices()
         /* do not show printer bind state is empty */
         if (!mobj->is_avaliable()) continue;
 
+        /* do not show devices discovered/bound by a different printer agent */
+        if (mobj->printer_agent_id != current_agent_id)
+            continue;
+
         if (!wxGetApp().is_user_login(wxGetApp().get_printer_cloud_provider()) && !mobj->is_lan_mode_printer())
             continue;
 
@@ -634,7 +639,7 @@ void SelectMachinePopup::update_user_devices()
     }
 
     m_bind_machine_list.clear();
-    m_bind_machine_list = dev->get_my_machine_list();
+    m_bind_machine_list = dev->get_my_machine_list(dev->get_current_printer_agent_id());
 
     //sort list
     std::vector<std::pair<std::string, MachineObject*>> user_machine_list;
@@ -704,7 +709,6 @@ void SelectMachinePopup::update_user_devices()
                     }
 
                     mobj->set_access_code("");
-                    mobj->erase_user_access_code();
                 }
 
                 if (GUI::wxGetApp().plater())

src/slic3r/GUI/Selection.cpp

@@ -1270,9 +1270,7 @@ void Selection::translate(const Vec3d &displacement, TransformationType transfor
         } else {
             if (v.is_wipe_tower) {//in world cs
                 int           plate_idx           = v.object_idx() - 1000;
-                BoundingBoxf3 plate_bbox = wxGetApp().plater()->get_partplate_list().get_plate(plate_idx)->get_build_volume(true);
-                BoundingBox   plate_bbox2d        = BoundingBox(scaled(Vec2f(plate_bbox.min[0], plate_bbox.min[1])), scaled(Vec2f(plate_bbox.max[0], plate_bbox.max[1])));
-                Vec3d         tower_size          = v.bounding_box().size();
+                const Polygons bed_polys{wxGetApp().plater()->get_partplate_list().get_plate(plate_idx)->get_shared_printable_polygon()};
                 Vec3d         tower_origin        = m_cache.volumes_data[i].get_volume_position();
                 Vec3d         actual_displacement = displacement;
                 bool show_read_wipe_tower = wxGetApp().plater()->get_partplate_list().get_plate(plate_idx)->fff_print()->is_step_done(psWipeTower);
@@ -1287,18 +1285,7 @@ void Selection::translate(const Vec3d &displacement, TransformationType transfor
                 BoundingBoxf3 tower_bbox = v.bounding_box();
                 tower_bbox.translate(actual_displacement + tower_origin);
                 BoundingBox   tower_bbox2d = BoundingBox(scaled(Vec2f(tower_bbox.min[0], tower_bbox.min[1])), scaled(Vec2f(tower_bbox.max[0], tower_bbox.max[1])));
-                Vec2f offset = WipeTower::move_box_inside_box(tower_bbox2d, plate_bbox2d,scaled(margin));
-                //if (tower_origin(0) + actual_displacement(0) - margin < plate_bbox.min(0)) {
-                //    actual_displacement(0) = plate_bbox.min(0) - tower_origin(0) + margin;
-                //} else if (tower_origin(0) + actual_displacement(0) + tower_size(0) + margin > plate_bbox.max(0)) {
-                //    actual_displacement(0) = plate_bbox.max(0) - tower_origin(0) - tower_size(0) - margin;
-                //}
-
-                //if (tower_origin(1) + actual_displacement(1) - margin < plate_bbox.min(1)) {
-                //    actual_displacement(1) = plate_bbox.min(1) - tower_origin(1) + margin;
-                //} else if (tower_origin(1) + actual_displacement(1) + tower_size(1) + margin > plate_bbox.max(1)) {
-                //    actual_displacement(1) = plate_bbox.max(1) - tower_origin(1) - tower_size(1) - margin;
-                //}
+                const Vec2f   offset       = WipeTower::move_box_inside_polygon(tower_bbox2d, bed_polys, scaled(margin));
                 actual_displacement += Vec3d(offset[0], offset[1],0);
                 v.set_volume_offset(m_cache.volumes_data[i].get_volume_position() + actual_displacement);
             }

src/slic3r/GUI/SendToPrinter.hpp

@@ -180,7 +180,7 @@ public:
     SendToPrinterDialog(Plater *plater = nullptr);
     ~SendToPrinterDialog();
 
-    bool Show(bool show);
+    bool Show(bool show) override;
     bool is_timeout();
     void on_rename_click(wxCommandEvent& event);
     void on_rename_enter();

src/slic3r/GUI/SyncAmsInfoDialog.cpp

@@ -1218,8 +1218,8 @@ void SyncAmsInfoDialog::sync_ams_mapping_result(std::vector<FilamentInfo> &resul
             iter++;
         }
     }
-    auto tab_index = (MainFrame::TabPosition) dynamic_cast<Notebook *>(wxGetApp().tab_panel())->GetSelection();
-    if (tab_index == MainFrame::TabPosition::tp3DEditor || tab_index == MainFrame::TabPosition::tpPreview) {
+    wxString tab_name = wxGetApp().tab_panel()->GetSelectedPageName();
+    if (tab_name == TAB_ID_PREPARE || tab_name == TAB_ID_PREVIEW) {
         updata_thumbnail_data_after_connected_printer();
     }
 }

src/slic3r/GUI/SyncAmsInfoDialog.hpp

@@ -371,7 +371,7 @@ public:
     };
     FinishSyncAmsDialog(InputInfo &input_info);
     ~FinishSyncAmsDialog() override;
-    void deal_ok();
+    void deal_ok() override;
     void update_info(InputInfo& info);
     bool Layout() override;
 

src/slic3r/GUI/SysInfoDialog.cpp

@@ -21,7 +21,9 @@
 #ifdef _WIN32
 	// The standard Windows includes.
 	#define WIN32_LEAN_AND_MEAN
+	#ifndef NOMINMAX
 	#define NOMINMAX
+	#endif
 	#include <Windows.h>
 	#include <psapi.h>
 #endif /* _WIN32 */

src/slic3r/GUI/Tab.cpp

@@ -34,6 +34,7 @@
 
 #include "GUI_App.hpp"
 #include "GUI_ObjectList.hpp"
+#include "slic3r/Utils/NetworkAgentFactory.hpp"
 #include "slic3r/Utils/PresetUpdater.hpp"
 #include "slic3r/plugin/PluginConfig.hpp"
 #include "Plater.hpp"
@@ -1746,6 +1747,13 @@ void Tab::toggle_line(const std::string &opt_key, bool toggle, int opt_index)
     if (line) line->toggle_visible = toggle;
 };
 
+void Tab::set_option_label(const std::string &opt_key, const wxString &label, int opt_index)
+{
+    if (!m_active_page) return;
+    Line *line = m_active_page->get_line(opt_key, opt_index);
+    if (line) line->set_label(label);
+}
+
 // To be called by custom widgets, load a value into a config,
 // update the preset selection boxes (the dirty flags)
 // If value is saved before calling this function, put saved_value = true,
@@ -2136,43 +2144,9 @@ void Tab::on_value_change(const std::string& opt_key, const boost::any& value)
         m_last_sparse_infill_rotate_template_value = m_config->opt_string("sparse_infill_rotate_template");
     }
 
-    if(opt_key=="layer_height"){
-        auto min_layer_height_from_nozzle=m_preset_bundle->full_config().option<ConfigOptionFloats>("min_layer_height")->values;
-        auto max_layer_height_from_nozzle=m_preset_bundle->full_config().option<ConfigOptionFloats>("max_layer_height")->values;
-        auto layer_height_floor = *std::min_element(min_layer_height_from_nozzle.begin(), min_layer_height_from_nozzle.end());
-        auto layer_height_ceil  = *std::max_element(max_layer_height_from_nozzle.begin(), max_layer_height_from_nozzle.end());
-        const auto lh = m_config->opt_float("layer_height");
-        bool exceed_minimum_flag = lh < layer_height_floor;
-        bool exceed_maximum_flag = lh > layer_height_ceil;
-
-        if (exceed_maximum_flag || exceed_minimum_flag) {
-            if (lh < EPSILON) {
-                auto          msg_text = _(L("Layer height is too small.\nIt will set to min_layer_height\n"));
-                MessageDialog dialog(wxGetApp().plater(), msg_text, "", wxICON_WARNING | wxOK);
-                dialog.SetButtonLabel(wxID_OK, _L("OK"));
-                dialog.ShowModal();
-                auto new_conf = *m_config;
-                new_conf.set_key_value("layer_height", new ConfigOptionFloat(layer_height_floor));
-                m_config_manipulation.apply(m_config, &new_conf);
-            } else {
-                wxString msg_text = _(L("Layer height exceeds the limit in Printer Settings -> Extruder -> Layer height limits, "
-                                        "this may cause printing quality issues."));
-                msg_text += "\n\n" + _(L("Adjust to the set range automatically?\n"));
-                MessageDialog dialog(wxGetApp().plater(), msg_text, "", wxICON_WARNING | wxYES | wxNO);
-                dialog.SetButtonLabel(wxID_YES, _L("Adjust"));
-                dialog.SetButtonLabel(wxID_NO, _L("Ignore"));
-                auto answer   = dialog.ShowModal();
-                auto new_conf = *m_config;
-                if (answer == wxID_YES) {
-                    if (exceed_maximum_flag)
-                        new_conf.set_key_value("layer_height", new ConfigOptionFloat(layer_height_ceil));
-                    if (exceed_minimum_flag)
-                        new_conf.set_key_value("layer_height", new ConfigOptionFloat(layer_height_floor));
-                    m_config_manipulation.apply(m_config, &new_conf);
-                }
-            }
+    if (opt_key == "layer_height") {
+        if (m_config_manipulation.check_layer_height(m_config))
             wxGetApp().plater()->update();
-        }
     }
 
     string opt_key_without_idx = opt_key.substr(0, opt_key.find('#'));
@@ -2824,6 +2798,7 @@ void TabPrint::build()
         optgroup->append_single_option_line("fill_multiline", "strength_settings_infill#fill-multiline");
         optgroup->append_single_option_line("sparse_infill_pattern", "strength_settings_infill#sparse-infill-pattern");
         optgroup->append_single_option_line("gyroid_optimized", "strength_settings_patterns#gyroid-optimized");
+        optgroup->append_single_option_line("sparse_infill_smooth_factor", "strength_settings_infill#sparse-infill-smooth-factor");
         optgroup->append_single_option_line("infill_direction", "strength_settings_infill#direction");
         optgroup->append_single_option_line("sparse_infill_rotate_template", "strength_settings_infill_rotation_template_metalanguage");
         optgroup->append_single_option_line("skin_infill_density", "strength_settings_patterns#locked-zag");
@@ -3080,6 +3055,7 @@ void TabPrint::build()
         optgroup->append_single_option_line("combine_brims", "others_settings_brim#combine-brims");
         optgroup->append_single_option_line("brim_ears_max_angle", "others_settings_brim#ear-max-angle");
         optgroup->append_single_option_line("brim_ears_detection_length", "others_settings_brim#ear-detection-radius");
+        optgroup->append_single_option_line("brim_ears_outer_only", "others_settings_brim#brim-ears-outer-only");
 
         optgroup = page->new_optgroup(L("Special mode"), L"param_special");
         optgroup->append_single_option_line("slicing_mode", "others_settings_special_mode#slicing-mode");
@@ -4043,13 +4019,12 @@ void TabFilament::add_filament_overrides_page()
 
     const int extruder_idx = 0; // #ys_FIXME
 
-    ConfigOptionsGroupShp retraction_optgroup = page->new_optgroup(L("Retraction"), L"param_retraction");
-    auto append_retraction_option = [this, retraction_optgroup](const std::string& opt_key, int opt_index)
+    auto append_retraction_option = [this](ConfigOptionsGroupShp optgroup, const std::string& opt_key, int opt_index)
     {
         Line line {"",""};
-        line = retraction_optgroup->create_single_option_line(retraction_optgroup->get_option(opt_key, opt_index));
+        line = optgroup->create_single_option_line(optgroup->get_option(opt_key, opt_index));
 
-        line.near_label_widget = [this, optgroup_wk = ConfigOptionsGroupWkp(retraction_optgroup), opt_key, opt_index](wxWindow* parent) {
+        line.near_label_widget = [this, optgroup_wk = ConfigOptionsGroupWkp(optgroup), opt_key, opt_index](wxWindow* parent) {
             auto check_box = new ::CheckBox(parent); // ORCA modernize checkboxes
             check_box->Bind(wxEVT_TOGGLEBUTTON, [this, optgroup_wk, opt_key, opt_index](wxCommandEvent& evt) {
                 const bool is_checked = evt.IsChecked();
@@ -4076,9 +4051,10 @@ void TabFilament::add_filament_overrides_page()
             return check_box;
         };
 
-        retraction_optgroup->append_line(line);
+        optgroup->append_line(line);
     };
 
+    ConfigOptionsGroupShp retraction_optgroup = page->new_optgroup(L("Retraction"), L"param_retraction");
     for (const std::string opt_key : {  "filament_retraction_length",
                                         "filament_z_hop",
                                         "filament_z_hop_types",
@@ -4102,7 +4078,13 @@ void TabFilament::add_filament_overrides_page()
                                         //SoftFever
                                         // "filament_seam_gap"
                                      })
-        append_retraction_option(opt_key, extruder_idx);
+        append_retraction_option(retraction_optgroup, opt_key, extruder_idx);
+
+    ConfigOptionsGroupShp toolchange_optgroup = page->new_optgroup(L("Retraction when switching material"), L"param_retraction_material_change");
+    for (const std::string opt_key : {  "filament_retract_length_toolchange",
+                                        "filament_retract_restart_extra_toolchange"
+                                     })
+        append_retraction_option(toolchange_optgroup, opt_key, extruder_idx);
 
     ConfigOptionsGroupShp ironing_optgroup = page->new_optgroup(L("Ironing"), L"param_ironing");
     auto append_ironing_option = [this, ironing_optgroup](const std::string& opt_key, int opt_index)
@@ -4217,6 +4199,8 @@ void TabFilament::update_filament_overrides_page(const DynamicPrintConfig* print
                                             "filament_retraction_speed",
                                             "filament_deretraction_speed",
                                             "filament_retract_restart_extra",
+                                            "filament_retract_length_toolchange",
+                                            "filament_retract_restart_extra_toolchange",
                                             "filament_retraction_minimum_travel",
                                             "filament_retract_when_changing_layer",
                                             "filament_wipe",
@@ -4247,7 +4231,8 @@ void TabFilament::update_filament_overrides_page(const DynamicPrintConfig* print
         is_checked &= !dynamic_cast<ConfigOptionVectorBase*>(m_config->option(opt_key))->is_nil(extruder_idx);
         m_overrides_options[opt_key]->SetValue(is_checked);
 
-        Field* field = optgroup->get_fieldc(opt_key, 0);
+        // the toolchange overrides live in their own optgroup, so search the whole page
+        Field* field = page->get_field(opt_key, 0);
         if (field == nullptr) continue;
 
         if (opt_key == "filament_long_retractions_when_cut") {
@@ -5053,8 +5038,43 @@ void TabPrinter::build_fff()
 
         optgroup->append_single_option_line("printer_structure", "printer_basic_information_advanced#printer-structure");
         optgroup->append_single_option_line("gcode_flavor", "printer_basic_information_advanced#g-code-flavor");
+        optgroup->append_single_option_line("gcode_skip_config_block", "printer_basic_information_advanced#skip-g-code-config-block");
         optgroup->append_single_option_line("pellet_modded_printer", "printer_basic_information_advanced#pellet-modded-printer");
         optgroup->append_single_option_line("bbl_use_printhost", "printer_basic_information_advanced#use-3rd-party-print-host");
+
+        // "Printer Agent" dropdown - printer_agent is a coString; gui_type routes it to
+        // PrinterAgentChoice instead of a TextCtrl. Rows and values come from the live agent
+        // registry, and the value is stored as the agent-id string.
+        if (wxGetApp().getAgent() != nullptr)
+        {
+            auto registered_printer_agents = NetworkAgentFactory::get_registered_printer_agents();
+            if (!registered_printer_agents.empty())
+            {
+                ConfigOptionDef def;
+                def.type = coString;
+                def.gui_type = ConfigOptionDef::GUIType::printer_agent_select;
+                def.width = 3 * Field::def_width_wider() / 2;
+                def.label = L("Printer Agent");
+                def.tooltip = L("Select the network agent implementation for printer communication. "
+                    "Available agents are registered at startup.");
+                def.mode = comAdvanced;
+
+                // Create the field without get_option() so it is not registered in m_opt_map.
+                // ConfigOptionsGroup handles printer_agent before the generic mapped write path.
+                Line agent_line = optgroup->create_single_option_line(Option(def, "printer_agent"));
+                optgroup->append_line(agent_line);
+                if (Field* agent_field = get_field("printer_agent"))
+                {
+                    if (auto* choice = dynamic_cast<PrinterAgentChoice*>(agent_field); choice && choice->getWindow())
+                        choice->set_value(m_config->opt_string("printer_agent"), false);
+                }
+
+                // Register by hand so the UnsavedChanges dialog can render a row for it.
+                wxGetApp().sidebar().get_searcher().add_key("printer_agent", m_type, optgroup->title,
+                                                            optgroup->config_category());
+            }
+        }
+
         optgroup->append_single_option_line("use_3mf");
         optgroup->append_single_option_line("scan_first_layer" , "printer_basic_information_advanced#scan-first-layer");
         optgroup->append_single_option_line("enable_power_loss_recovery", "printer_basic_information_advanced#power-loss-recovery");
@@ -5698,6 +5718,7 @@ if (is_marlin_flavor)
         optgroup->append_single_option_line("purge_in_prime_tower", "printer_multimaterial_wipe_tower#purge-in-prime-tower");
         optgroup->append_single_option_line("enable_filament_ramming", "printer_multimaterial_wipe_tower#enable-filament-ramming");
         optgroup->append_single_option_line("tool_change_on_wipe_tower", "printer_multimaterial_wipe_tower#tool-change-on-wipe-tower");
+        optgroup->append_single_option_line("wait_for_temp_on_wipe_tower", "printer_multimaterial_wipe_tower#wait-for-temperature-on-wipe-tower");
 
         // Orca-Belt: belt printers replace the classic wipe tower with an
         // auto-generated purge prism; this is its enable (gated to belt printers
@@ -6018,6 +6039,16 @@ void TabPrinter::reload_config()
     // so update it implicitly
     if (m_active_page && m_active_page->title() == "Multimaterial")
         m_active_page->set_value("extruders_count", int(m_extruders_count));
+
+    // m_opt_map-driven reload does not cover printer_agent, so sync this custom field explicitly.
+    if (Field* agent_field = get_field("printer_agent"))
+    {
+        if (auto* choice = dynamic_cast<PrinterAgentChoice*>(agent_field); choice && choice->getWindow())
+        {
+            const std::string selected_agent = m_config->opt_string("printer_agent");
+            choice->set_value(selected_agent, false);
+        }
+    }
 }
 
 void TabPrinter::activate_selected_page(std::function<void()> throw_if_canceled)
@@ -6028,6 +6059,16 @@ void TabPrinter::activate_selected_page(std::function<void()> throw_if_canceled)
     // so update it implicitly
     if (m_active_page && m_active_page->title() == "Multimaterial")
         m_active_page->set_value("extruders_count", int(m_extruders_count));
+
+    // m_opt_map-driven reload does not cover printer_agent, so sync this custom field explicitly.
+    if (Field* agent_field = get_field("printer_agent"))
+    {
+        if (auto* choice = dynamic_cast<PrinterAgentChoice*>(agent_field); choice && choice->getWindow())
+        {
+            const std::string selected_agent = m_config->opt_string("printer_agent");
+            choice->set_value(selected_agent, false);
+        }
+    }
 }
 
 void TabPrinter::clear_pages()
@@ -6273,6 +6314,7 @@ void TabPrinter::toggle_options()
         // so the option is irrelevant there.
         const size_t extruders_count = m_config->option<ConfigOptionFloats>("nozzle_diameter")->size();
         toggle_option("tool_change_on_wipe_tower", !bSEMM && supports_wipe_tower_2 && extruders_count > 1);
+        toggle_option("wait_for_temp_on_wipe_tower", !bSEMM && supports_wipe_tower_2 && extruders_count > 1);
     }
     wxString extruder_number;
     long val = 1;
@@ -6637,7 +6679,7 @@ void Tab::load_current_preset()
                             std::string bmp_name = tab->type() == Slic3r::Preset::TYPE_FILAMENT      ? "spool" :
                                                    tab->type() == Slic3r::Preset::TYPE_SLA_MATERIAL  ? "" : "cog";
                             tab->Hide(); // #ys_WORKAROUND : Hide tab before inserting to avoid unwanted rendering of the tab
-                            dynamic_cast<Notebook*>(wxGetApp().tab_panel())->InsertPage(wxGetApp().tab_panel()->FindPage(this), tab, tab->title(), bmp_name);
+                            dynamic_cast<Notebook*>(wxGetApp().tab_panel())->InsertPage(wxGetApp().tab_panel()->FindPage(this), wxString(), tab, tab->title(), bmp_name);
                         }
                         else
 #endif
@@ -8064,6 +8106,24 @@ bool TabPrinter::apply_extruder_cnt_from_cache()
     return false;
 }
 
+void TabPrinter::refresh_printer_agent_dropdown() const
+{
+    auto* choice = dynamic_cast<PrinterAgentChoice*>(get_field("printer_agent"));
+    if (!choice || !choice->getWindow())
+        return;
+
+    const auto agents = NetworkAgentFactory::get_registered_printer_agents();
+    if (agents.empty())
+        return;
+
+    // why: rows live on PrinterAgentChoice now; rebuild them from the live registry and re-select the stored id.
+    const std::string selected_agent = wxGetApp().preset_bundle->printers.get_edited_preset()
+                                                 .config.opt_string("printer_agent");
+    choice->reload_rows();
+    choice->set_value(selected_agent, false);
+    this->GetParent()->Layout();
+}
+
 bool Tab::validate_custom_gcodes()
 {
     if (m_type != Preset::TYPE_FILAMENT &&
@@ -8698,8 +8758,12 @@ void Page::activate(ConfigOptionMode mode, std::function<void()> throw_if_cancel
 
 #ifdef __WXMSW__
     // BBS: fix field control position
-    wxTheApp->CallAfter([this]() {
-        for (auto group : m_optgroups) {
+    wxTheApp->CallAfter([wp = std::weak_ptr<Page>(shared_from_this())]() {
+        auto page = wp.lock();
+        if (!page)
+            return;
+
+        for (auto group : page->m_optgroups) {
             if (group->custom_ctrl)
                 group->custom_ctrl->fixup_items_positions();
         }
@@ -9155,11 +9219,15 @@ ConfigManipulation Tab::get_config_manipulation()
         return toggle_line(opt_key, toggle, opt_index >= 0 ? opt_index + 256 : opt_index);
     };
 
+    auto cb_set_option_label = [this](const t_config_option_key &opt_key, const wxString &label, int opt_index) {
+        return set_option_label(opt_key, label, opt_index >= 0 ? opt_index + 256 : opt_index);
+    };
+
     auto cb_value_change = [this](const std::string& opt_key, const boost::any& value) {
         return on_value_change(opt_key, value);
     };
 
-    return ConfigManipulation(load_config, cb_toggle_field, cb_toggle_line, cb_value_change, nullptr, this);
+    return ConfigManipulation(load_config, cb_toggle_field, cb_toggle_line, cb_value_change, nullptr, this, cb_set_option_label);
 }
 
 

src/slic3r/GUI/Tab.hpp

@@ -402,6 +402,7 @@ public:
     Field*          get_field(const t_config_option_key &opt_key, Page** selected_page, int opt_index = -1);
     void            toggle_option(const std::string &opt_key, bool toggle, int opt_index = -1);
     void            toggle_line(const std::string &opt_key, bool toggle, int opt_index = -1); // BBS: hide some line
+    void            set_option_label(const std::string &opt_key, const wxString &label, int opt_index = -1);
 	wxSizer*		description_line_widget(wxWindow* parent, ogStaticText** StaticText, wxString text = wxEmptyString);
 	bool			current_preset_is_dirty() const;
 	bool			saved_preset_is_dirty() const;
@@ -514,13 +515,13 @@ public:
 	bool has_key(std::string const &key);
 
 protected:
-	virtual void    activate_selected_page(std::function<void()> throw_if_canceled);
+	virtual void    activate_selected_page(std::function<void()> throw_if_canceled) override;
 
 	virtual void    on_value_change(const std::string& opt_key, const boost::any& value) override;
 
 	virtual void    notify_changed(ObjectBase * object) = 0;
 
-	virtual void	reload_config();
+	virtual void	reload_config() override;
 
 	virtual void	update_custom_dirty(std::vector<std::string> &dirty_options, std::vector<std::string> &nonsys_options) override;
 
@@ -681,6 +682,7 @@ public:
 	wxSizer*	create_bed_shape_widget(wxWindow* parent);
 	void		cache_extruder_cnt(const DynamicPrintConfig* config = nullptr);
 	bool		apply_extruder_cnt_from_cache();
+	void		refresh_printer_agent_dropdown() const;
 };
 
 class TabSLAMaterial : public Tab

src/slic3r/GUI/TabButton.hpp

@@ -40,7 +40,7 @@ public:
 
     void SetBitmap(ScalableBitmap &bitmap);
 
-    bool Enable(bool enable = true);
+    bool Enable(bool enable = true) override;
 
     void Rescale();
 

src/slic3r/GUI/Tabbook.hpp

@@ -108,7 +108,7 @@ public:
     // by this control) and show it immediately.
     bool ShowNewPage(wxWindow * page)
     {
-        return AddPage(page, wxString(), ""/*true *//* select it */);
+        return AddPage(page, wxString());
     }
 
     // Set effect to use for showing/hiding pages.
@@ -139,14 +139,13 @@ public:
 
     // Implement base class pure virtual methods.
 
-    // adds a new page to the control
     bool AddPage(wxWindow* page,
                  const wxString& text,
-                 const std::string& bmp_name,
-                 bool bSelect = false)
+                 bool bSelect = false,
+                 int imageId = NO_IMAGE) override
     {
         DoInvalidateBestSize();
-        return InsertNewPage(GetPageCount(), page, text, bmp_name, bSelect);
+        return InsertPage(GetPageCount(), page, text, bSelect, imageId);
     }
 
     //// Page management
@@ -167,24 +166,7 @@ public:
         return true;
     }
 
-    bool InsertNewPage(size_t n,
-                    wxWindow * page,
-                    const wxString & text,
-                    const std::string& bmp_name = "",
-                    bool bSelect = false)
-    {
-        if (!wxBookCtrlBase::InsertPage(n, page, text, bSelect))
-            return false;
-
-        GetBtnsListCtrl()->InsertPage(n, text, bSelect, bmp_name);
-
-        if (bSelect)
-            SetSelection(n);
-
-        return true;
-    }
-
-    bool RemovePage(size_t n)
+    bool RemovePage(size_t n) override
     {
         if (!wxBookCtrlBase::RemovePage(n))
             return false;

src/slic3r/GUI/UnsavedChangesDialog.hpp

@@ -343,7 +343,7 @@ public:
     UnsavedChangesDialog(const wxString &caption, const wxString &header, DynamicConfig *config, int from, int to, bool left_to_right, NozzleVolumeType nozzle);
     ~UnsavedChangesDialog() override = default;
 
-    int ShowModal();
+    int ShowModal() override;
 
     void        build(Preset::Type type, PresetCollection *dependent_presets, const std::string &new_selected_preset, const wxString &header = "");
     void update(Preset::Type type, PresetCollection* dependent_presets, const std::string& new_selected_preset, const wxString& header);

src/slic3r/GUI/WebGuideDialog.cpp

@@ -1,7 +1,9 @@
 #include "WebGuideDialog.hpp"
 #include "ConfigWizard.hpp"
 
+#include <boost/algorithm/string/join.hpp>
 #include <boost/filesystem/operations.hpp>
+#include <boost/nowide/fstream.hpp>
 #include <boost/filesystem/path.hpp>
 #include <boost/iostreams/detail/select.hpp>
 #include <boost/log/trivial.hpp>
@@ -9,7 +11,9 @@
 #include "I18N.hpp"
 #include "libslic3r/AppConfig.hpp"
 #include "libslic3r/Config.hpp"
+#include "libslic3r/Preset.hpp"
 #include "libslic3r/PresetBundle.hpp"
+#include "libslic3r/PresetCacheFormat.hpp"
 #include "slic3r/GUI/wxExtensions.hpp"
 #include "slic3r/GUI/GUI_App.hpp"
 #include "libslic3r_version.h"
@@ -41,8 +45,6 @@ using namespace nlohmann;
 
 namespace Slic3r { namespace GUI {
 
-json m_ProfileJson;
-
 static wxString update_custom_filaments()
 {
     json m_Res                                                                     = json::object();
@@ -190,12 +192,10 @@ GuideFrame::GuideFrame(GUI_App *pGUI, long style)
 
 GuideFrame::~GuideFrame()
 {
-    m_destroy = true;
-    if (m_load_task && m_load_task->joinable()) {
+    *m_cancel_token = true; // stop the loading thread and any queued CallAfter lambdas before join
+    if (m_load_task && m_load_task->joinable())
         m_load_task->join();
-        delete m_load_task;
-        m_load_task = nullptr;
-    }
+    m_load_task.reset();
     if (m_browser) {
         delete m_browser;
         m_browser = nullptr;
@@ -301,15 +301,71 @@ void GuideFrame::OnNavigationRequest(wxWebViewEvent &evt)
 /**
  * Callback invoked when a navigation request was accepted
  */
+// The empty shape every profile-loading path starts from or falls back to.
+void GuideFrame::reset_profile_json()
+{
+    m_ProfileJson["model"]    = json::array();
+    m_ProfileJson["machine"]  = json::object();
+    m_ProfileJson["filament"] = json::object();
+    m_ProfileJson["process"]  = json::array();
+}
+
+void GuideFrame::init_guide_paths()
+{
+    m_ProfileJson = json::parse("{}");
+    reset_profile_json();
+
+    vendor_dir      = (boost::filesystem::path(Slic3r::data_dir()) / PRESET_SYSTEM_DIR).make_preferred();
+    rsrc_vendor_dir = (boost::filesystem::path(resources_dir()) / "profiles").make_preferred();
+    orca_bundle_rsrc = true;
+
+    if (boost::filesystem::exists(vendor_dir)) {
+        for (const auto& entry : boost::filesystem::directory_iterator(vendor_dir)) {
+            if (!boost::filesystem::is_directory(entry) &&
+                boost::iequals(entry.path().extension().string(), ".json") &&
+                !boost::iequals(entry.path().stem().string(), PresetBundle::ORCA_FILAMENT_LIBRARY)) {
+                orca_bundle_rsrc = false;
+                break;
+            }
+        }
+    }
+
+    auto lib_json = boost::filesystem::path(PresetBundle::ORCA_FILAMENT_LIBRARY).replace_extension(".json");
+    m_OrcaFilaLibPath = boost::filesystem::exists(vendor_dir / lib_json)
+        ? (vendor_dir      / PresetBundle::ORCA_FILAMENT_LIBRARY).string()
+        : (rsrc_vendor_dir / PresetBundle::ORCA_FILAMENT_LIBRARY).string();
+}
+
+void GuideFrame::on_profile_loaded()
+{
+    // Must be called on the main thread.
+    SaveProfileData();
+    const std::string strAll = m_ProfileJson.dump(-1, ' ', false, json::error_handler_t::ignore);
+    BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << ", finished, json contents:\n" << strAll;
+    json res;
+    res["command"]     = "userguide_profile_load_finish";
+    res["sequence_id"] = "10001";
+    RunScript(wxString::Format("HandleStudio(%s)", res.dump(-1, ' ', true)));
+}
+
 void GuideFrame::OnNavigationComplete(wxWebViewEvent &evt)
 {
     //wxLogMessage("%s", "Navigation complete; url='" + evt.GetURL() + "'");
     if (!bFirstComplete) {
-        m_load_task = new boost::thread(boost::bind(&GuideFrame::LoadProfileData, this));
-       // boost::thread LoadProfileThread(boost::bind(&GuideFrame::LoadProfileData, this));
-        //LoadProfileThread.detach();
-
         bFirstComplete = true;
+        try {
+            init_guide_paths();
+            if (BuildProfileDataFromPresetBundle()) {
+                if (!*m_cancel_token)
+                    on_profile_loaded();
+            } else {
+                // Presets not yet in memory — delegate to background thread.
+                m_load_task = std::make_unique<boost::thread>(boost::bind(&GuideFrame::LoadProfileData, this));
+            }
+        } catch (const std::exception& e) {
+            BOOST_LOG_TRIVIAL(error) << __FUNCTION__ << ", init error: " << e.what();
+            m_load_task = std::make_unique<boost::thread>(boost::bind(&GuideFrame::LoadProfileData, this));
+        }
     }
 
     m_browser->Show();
@@ -762,11 +818,9 @@ bool GuideFrame::apply_config(AppConfig *app_config, PresetBundle *preset_bundle
     bool check_unsaved_preset_changes = false;
     std::vector<std::string> install_bundles;
     std::vector<std::string> remove_bundles;
-    const auto vendor_dir = (boost::filesystem::path(Slic3r::data_dir()) / PRESET_SYSTEM_DIR).make_preferred();
     for (const auto &it : enabled_vendors) {
         if (it.second.size() > 0) {
-            auto vendor_file = vendor_dir/(it.first + ".json");
-            if (!fs::exists(vendor_file)) {
+            if (!is_vendor_installed(it.first)) {
                 install_bundles.emplace_back(it.first);
             }
         }
@@ -777,8 +831,7 @@ bool GuideFrame::apply_config(AppConfig *app_config, PresetBundle *preset_bundle
         if (it.second.size() > 0) {
             if (enabled_vendors.find(it.first) != enabled_vendors.end())
                 continue;
-            auto vendor_file = vendor_dir/(it.first + ".json");
-            if (fs::exists(vendor_file)) {
+            if (is_vendor_installed(it.first)) {
                 remove_bundles.emplace_back(it.first);
             }
         }
@@ -1127,99 +1180,324 @@ int GuideFrame::GetFilamentInfo( std::string VendorDirectory, json & pFilaList,
     return status;
 }
 
-int GuideFrame::LoadProfileData()
+bool GuideFrame::BuildProfileJson(const PresetBundle& bundle, bool require_all_resource_vendors)
 {
     try {
-        m_ProfileJson             = json::parse("{}");
-        m_ProfileJson["model"]    = json::array();
-        m_ProfileJson["machine"]  = json::object();
-        m_ProfileJson["filament"] = json::object();
-        m_ProfileJson["process"]  = json::array();
+        // Models from vendor profiles
+        for (const auto& [vendor_id, vp] : bundle.vendors) {
+            for (const auto& model : vp.models) {
+                std::string nozzle_str;
+                for (const auto& v : model.variants) {
+                    if (!nozzle_str.empty()) nozzle_str += ";";
+                    nozzle_str += v.name;
+                }
+                const std::string materials_str = boost::algorithm::join(model.default_materials, ";");
+                boost::filesystem::path cover_path =
+                    (boost::filesystem::path(resources_dir()) / "profiles" / vp.id / (model.id + "_cover.png"))
+                        .make_preferred();
+                if (!boost::filesystem::exists(cover_path))
+                    cover_path =
+                        (boost::filesystem::path(resources_dir()) / "web/image/printer" / (model.id + "_cover.png"))
+                            .make_preferred();
 
-        vendor_dir      = (boost::filesystem::path(Slic3r::data_dir()) / PRESET_SYSTEM_DIR).make_preferred();
-        rsrc_vendor_dir = (boost::filesystem::path(resources_dir()) / "profiles").make_preferred();
-
-        // Orca: add custom as default
-        // Orca: add json logic for vendor bundle
-        orca_bundle_rsrc = true;
-
-        // search if there exists a .json file in vendor_dir folder, if exists, set orca_bundle_rsrc to false
-        for (const auto& entry : boost::filesystem::directory_iterator(vendor_dir)) {
-            if (!boost::filesystem::is_directory(entry) && boost::iequals(entry.path().extension().string(), ".json") && !boost::iequals(entry.path().stem().string(), PresetBundle::ORCA_FILAMENT_LIBRARY)) {
-                orca_bundle_rsrc = false;
-                break;
+                json entry;
+                entry["model"]           = model.id;
+                entry["name"]            = model.name;
+                entry["vendor"]          = vp.id;
+                entry["nozzle_diameter"] = nozzle_str;
+                entry["materials"]       = materials_str;
+                entry["cover"]           = cover_path.string();
+                entry["nozzle_selected"] = "";
+                entry["sub_path"]        = "";
+                m_ProfileJson["model"].push_back(entry);
             }
         }
 
-        // load the default filament library first
-        std::set<std::string> loaded_vendors;
-        auto filament_library_name = boost::filesystem::path(PresetBundle::ORCA_FILAMENT_LIBRARY).replace_extension(".json");
-        if (boost::filesystem::exists(vendor_dir / filament_library_name)) {
-            m_OrcaFilaLibPath = (vendor_dir / PresetBundle::ORCA_FILAMENT_LIBRARY).string();
-            LoadProfileFamily(PresetBundle::ORCA_FILAMENT_LIBRARY, (vendor_dir / filament_library_name).string());
-        } else {
-            m_OrcaFilaLibPath = (rsrc_vendor_dir / PresetBundle::ORCA_FILAMENT_LIBRARY).string();
-            LoadProfileFamily(PresetBundle::ORCA_FILAMENT_LIBRARY, (rsrc_vendor_dir / filament_library_name).string());
-        }
-        loaded_vendors.insert(PresetBundle::ORCA_FILAMENT_LIBRARY);
+        // Machine map: preset name -> {model, nozzle variant}
+        for (const Preset& p : bundle.printers()) {
+            if (!p.is_system || !p.vendor) continue;
+            const auto* printer_model   = p.config.option<ConfigOptionString>("printer_model");
+            const auto* printer_variant = p.config.option<ConfigOptionString>("printer_variant");
+            if (!printer_model || printer_model->value.empty() || !printer_variant) continue;
 
-        //load custom bundle from user data path
-        boost::filesystem::directory_iterator endIter;
-        for (boost::filesystem::directory_iterator iter(vendor_dir); iter != endIter; iter++) {
-            if (!boost::filesystem::is_directory(*iter)) {
-                wxString strVendor = from_u8(iter->path().string()).BeforeLast('.');
-                strVendor          = strVendor.AfterLast('\\');
-                strVendor          = strVendor.AfterLast('/');
-
-                wxString strExtension = from_u8(iter->path().string()).AfterLast('.').Lower();
-                if(strExtension.CmpNoCase("json") != 0 || loaded_vendors.find(w2s(strVendor)) != loaded_vendors.end())
-                    continue;
-
-                LoadProfileFamily(w2s(strVendor), iter->path().string());
-                loaded_vendors.insert(w2s(strVendor));
-            }
-            if (m_destroy)
-                return 0;
+            json mach;
+            mach["model"]  = printer_model->value;
+            mach["nozzle"] = printer_variant->value;
+            m_ProfileJson["machine"][p.name] = mach;
         }
 
-        boost::filesystem::directory_iterator others_endIter;
-        for (boost::filesystem::directory_iterator iter(rsrc_vendor_dir); iter != others_endIter; iter++) {
-            if (!boost::filesystem::is_directory(*iter)) {
-                wxString strVendor = from_u8(iter->path().string()).BeforeLast('.');
-                strVendor          = strVendor.AfterLast('\\');
-                strVendor          = strVendor.AfterLast('/');
-                wxString strExtension = from_u8(iter->path().string()).AfterLast('.').Lower();
-                if (strExtension.CmpNoCase("json") != 0 || loaded_vendors.find(w2s(strVendor)) != loaded_vendors.end())
-                    continue;
+        // Filament map from system filament presets (vendor/type already resolved in config)
+        const json& machines = m_ProfileJson["machine"];
+        for (const Preset& p : bundle.filaments()) {
+            if (!p.is_system || !p.vendor) continue;
+            const auto* fila_vendor     = p.config.option<ConfigOptionStrings>("filament_vendor");
+            const auto* fila_type       = p.config.option<ConfigOptionStrings>("filament_type");
+            const auto* compat_printers = p.config.option<ConfigOptionStrings>("compatible_printers");
 
-                LoadProfileFamily(w2s(strVendor), iter->path().string());
-                loaded_vendors.insert(w2s(strVendor));
+            std::string vendor = (fila_vendor && !fila_vendor->values.empty()) ? fila_vendor->values[0] : "";
+            std::string type   = (fila_type   && !fila_type->values.empty())   ? fila_type->values[0]   : "";
+
+            std::string model_list;
+            if (compat_printers) {
+                for (const std::string& pname : compat_printers->values) {
+                    auto it = machines.find(pname);
+                    if (it != machines.end()) {
+                        const std::string m = (*it)["model"];
+                        const std::string n = (*it)["nozzle"];
+                        model_list += "[" + m + "++" + n + "]";
+                    }
+                }
             }
-            if (m_destroy)
-                return 0;
+
+            json ff;
+            ff["name"]     = p.name;
+            ff["sub_path"] = p.file;
+            ff["vendor"]   = vendor;
+            ff["type"]     = type;
+            ff["models"]   = model_list;
+            ff["selected"] = 0;
+            m_ProfileJson["filament"][p.name] = ff;
         }
 
-        wxGetApp().CallAfter([this] {
-            if (!m_destroy) {
-                //sync to appconfig first to populate current selections
-                SaveProfileData();
+        // Process list from visible system print presets
+        for (const Preset& p : bundle.prints()) {
+            if (!p.is_system || !p.vendor || !p.is_visible) continue;
+            json entry;
+            entry["name"]     = p.name;
+            entry["sub_path"] = p.file;
+            m_ProfileJson["process"].push_back(entry);
+        }
 
-                //sync to web after selections are populated
-                std::string strAll = m_ProfileJson.dump(-1, ' ', false, json::error_handler_t::ignore);
+        if (require_all_resource_vendors) {
+            // If rsrc_vendor_dir has vendors (profile JSONs, or the preset caches a
+            // packaged build ships instead) not covered by the current bundle, the
+            // bundle is incomplete (e.g. dev env where data_dir/system only has
+            // OrcaFilamentLibrary+Custom). Fall back so the slow path reads both dirs.
+            try {
+                for (const std::string& name : vendor_names_in(rsrc_vendor_dir)) {
+                    if (bundle.vendors.find(name) == bundle.vendors.end()) {
+                        BOOST_LOG_TRIVIAL(info) << "GuideFrame: vendor '" << name
+                            << "' in resources but not in preset_bundle — falling back to JSON loading";
+                        reset_profile_json();
+                        return false;
+                    }
+                }
+            } catch (const std::exception&) {}
+        }
 
-                BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << ", finished, json contents: " << std::endl << strAll;
-                json m_Res           = json::object();
-                m_Res["command"]     = "userguide_profile_load_finish";
-                m_Res["sequence_id"] = "10001";
-                wxString strJS       = wxString::Format("HandleStudio(%s)", m_Res.dump(-1, ' ', true));
+        BOOST_LOG_TRIVIAL(info) << "GuideFrame: built profile data ("
+                                << m_ProfileJson["model"].size()    << " models, "
+                                << m_ProfileJson["machine"].size()  << " machines, "
+                                << m_ProfileJson["filament"].size() << " filaments)";
+        return !m_ProfileJson["machine"].empty();
+    } catch (const std::exception& e) {
+        BOOST_LOG_TRIVIAL(warning) << "GuideFrame::BuildProfileJson failed: " << e.what()
+                                   << " — falling back to JSON loading";
+        reset_profile_json();
+        return false;
+    }
+}
 
-                RunScript(strJS);
+bool GuideFrame::BuildProfileDataFromPresetBundle()
+{
+    PresetBundle* pb = wxGetApp().preset_bundle;
+    if (!pb || pb->vendors.empty())
+        return false;
+    return BuildProfileJson(*pb, /*require_all_resource_vendors=*/true);
+}
+
+bool GuideFrame::BuildProfileDataFromVendors()
+{
+    try {
+        // Same vendor set and precedence as the JSON scan in LoadProfileData: a
+        // vendor in the user's system dir shadows the bundled one of that name.
+        // vendor_names_in names a vendor by its profile or, where a build ships
+        // preset caches instead, by its cache alone.
+        std::map<std::string, boost::filesystem::path> vendor_sources;
+        for (const boost::filesystem::path& dir : { vendor_dir, rsrc_vendor_dir }) {
+            boost::system::error_code ec;
+            if (boost::filesystem::exists(dir, ec))
+                for (const std::string& name : vendor_names_in(dir))
+                    vendor_sources.emplace(name, dir);   // first dir wins
+        }
+
+        // The load order: the filament library first, because the others'
+        // filaments inherit from it, then every versioned vendor — each loaded
+        // from the directory it was found in, so a vendor that is not installed
+        // is served from the shipped profiles. Each is stamped by name and
+        // version alone: a profile change requires a version bump, so those two
+        // determine content wherever the vendor's copy sits.
+        struct VendorSource { std::string name; boost::filesystem::path dir; std::string version; };
+        std::vector<VendorSource> ordered;
+        auto add_vendor = [&ordered](const std::string& name, const boost::filesystem::path& dir) {
+            // The version a load from `dir` would serve: the profile's where one
+            // exists (a cache is only served while it covers the profile beside
+            // it), the cache's own stamp where the cache is the whole vendor.
+            // A profile without a version (blacklist.json) carries no presets
+            // and is passed over.
+            const boost::filesystem::path profile = dir / (name + ".json");
+            if (boost::filesystem::exists(profile)) {
+                const Semver v = get_version_from_json(profile.string());
+                if (v.valid())
+                    ordered.push_back({name, dir, v.to_string()});
+            } else {
+                ordered.push_back({name, dir,
+                    VendorCacheFile::peek_version((dir / (name + ".opc")).string(), name)});
             }
+        };
+        const std::string filament_library(PresetBundle::ORCA_FILAMENT_LIBRARY);
+        if (auto it = vendor_sources.find(filament_library); it != vendor_sources.end())
+            add_vendor(filament_library, it->second);
+        for (const auto& [name, dir] : vendor_sources)
+            if (name != filament_library)
+                add_vendor(name, dir);
+        if (ordered.empty())
+            return false;
+        json stamps = json::array();
+        for (const VendorSource& v : ordered)
+            stamps.push_back({v.name, v.version});
+
+        // What this function derives is a pure function of that stamped set, so
+        // the derived JSON is cached whole: a fresh cache makes an open one
+        // file read, with no bundle built and no preset installed. Stale or
+        // absent, the bundle is rebuilt below and the result written back.
+        const boost::filesystem::path cache_file =
+            boost::filesystem::path(Slic3r::data_dir()) / "cache" / "wizard_profile_data.json";
+        try {
+            // Slurped whole and parsed from the buffer — nlohmann's fastest
+            // input path; a stream adapter costs real time on a multi-MB file.
+            boost::nowide::ifstream ifs(cache_file.string(), std::ios::binary);
+            if (ifs.is_open()) {
+                const std::string text{std::istreambuf_iterator<char>(ifs), std::istreambuf_iterator<char>()};
+                json cached = json::parse(text);
+                if (cached.value("format", 0) == 1 && cached["vendors"] == stamps &&
+                    ! cached["profile"]["machine"].empty()) {
+                    for (const char* key : { "model", "machine", "filament", "process" })
+                        m_ProfileJson[key] = std::move(cached["profile"][key]);
+                    BOOST_LOG_TRIVIAL(info) << "GuideFrame: profile data served from " << cache_file;
+                    return true;
+                }
+            }
+        } catch (const std::exception& e) {
+            BOOST_LOG_TRIVIAL(info) << "GuideFrame: rejecting cached profile data: " << e.what();
+        }
+
+        // Each vendor comes from its preset cache where one covers it, which is
+        // what makes this worth doing instead of the scan below; loading into a
+        // bundle per vendor keeps the install order the startup path has.
+        PresetBundle bundle;
+        auto load_vendor = [](PresetBundle& into, const std::string& vendor,
+                              const boost::filesystem::path& dir, const PresetBundle* base) {
+            into.load_vendor_configs_from_json(dir.string(), vendor, PresetBundle::LoadSystem,
+                                               ForwardCompatibilitySubstitutionRule::EnableSilent, base);
+        };
+        for (const VendorSource& v : ordered) {
+            if (*m_cancel_token)
+                return false;   // as in the scan below: a vendor without a cache is parsed, and that takes time
+            if (v.name == filament_library) {
+                load_vendor(bundle, v.name, v.dir, nullptr);
+            } else {
+                PresetBundle tmp;
+                load_vendor(tmp, v.name, v.dir, &bundle);
+                bundle.merge_presets(std::move(tmp));
+            }
+        }
+        if (bundle.vendors.empty())
+            return false;
+        if (! BuildProfileJson(bundle, /*require_all_resource_vendors=*/false))
+            return false;
+
+        // Written through a temp file and moved into place, as the preset caches
+        // are: half a cache must never be readable, and the PID suffix keeps two
+        // instances from interleaving on one temp file.
+        const std::string tmp_path = cache_file.string() + "." + std::to_string(get_current_pid()) + ".tmp";
+        try {
+            json out;
+            out["format"]  = 1;
+            out["vendors"] = std::move(stamps);
+            json& profile  = out["profile"];
+            for (const char* key : { "model", "machine", "filament", "process" })
+                profile[key] = m_ProfileJson[key];
+            boost::filesystem::create_directories(cache_file.parent_path());
+            {
+                boost::nowide::ofstream ofs(tmp_path, std::ios::binary | std::ios::trunc);
+                ofs << out.dump(-1, ' ', false, json::error_handler_t::ignore);
+                ofs.close();
+                if (! ofs.good())
+                    throw std::runtime_error("write failed");
+            }
+            if (const std::error_code ec = rename_file(tmp_path, cache_file.string()))
+                throw std::runtime_error(ec.message());
+        } catch (const std::exception& e) {
+            boost::system::error_code rm;
+            boost::filesystem::remove(tmp_path, rm);
+            BOOST_LOG_TRIVIAL(warning) << "GuideFrame: could not write the profile data cache: " << e.what();
+        }
+        return true;
+    } catch (const std::exception& e) {
+        BOOST_LOG_TRIVIAL(error) << __FUNCTION__ << " failed: " << e.what();
+        reset_profile_json();
+        return false;
+    }
+}
+
+int GuideFrame::LoadProfileData()
+{
+    // Background thread: the fast path in OnNavigationComplete failed (presets not yet loaded).
+    // Loading order (fastest to slowest):
+    //   1. Load every vendor, from its preset cache wherever one covers it
+    //   2. Read all vendor JSONs by hand
+    try {
+        if (!BuildProfileDataFromVendors()) {
+            // Last resort — read all vendor JSONs
+            std::set<std::string> loaded_vendors;
+            auto filament_library_name = boost::filesystem::path(PresetBundle::ORCA_FILAMENT_LIBRARY).replace_extension(".json");
+            if (boost::filesystem::exists(vendor_dir / filament_library_name))
+                LoadProfileFamily(PresetBundle::ORCA_FILAMENT_LIBRARY, (vendor_dir / filament_library_name).string());
+            else
+                LoadProfileFamily(PresetBundle::ORCA_FILAMENT_LIBRARY, (rsrc_vendor_dir / filament_library_name).string());
+            loaded_vendors.insert(PresetBundle::ORCA_FILAMENT_LIBRARY);
+
+            boost::filesystem::directory_iterator endIter;
+            for (boost::filesystem::directory_iterator iter(vendor_dir); iter != endIter; iter++) {
+                if (!boost::filesystem::is_directory(*iter)) {
+                    wxString strVendor = from_u8(iter->path().string()).BeforeLast('.');
+                    strVendor          = strVendor.AfterLast('\\');
+                    strVendor          = strVendor.AfterLast('/');
+                    wxString strExtension = from_u8(iter->path().string()).AfterLast('.').Lower();
+                    if (strExtension.CmpNoCase("json") != 0 || loaded_vendors.find(w2s(strVendor)) != loaded_vendors.end())
+                        continue;
+                    LoadProfileFamily(w2s(strVendor), iter->path().string());
+                    loaded_vendors.insert(w2s(strVendor));
+                }
+                if (*m_cancel_token) return 0;
+            }
+
+            boost::filesystem::directory_iterator others_endIter;
+            for (boost::filesystem::directory_iterator iter(rsrc_vendor_dir); iter != others_endIter; iter++) {
+                if (!boost::filesystem::is_directory(*iter)) {
+                    wxString strVendor = from_u8(iter->path().string()).BeforeLast('.');
+                    strVendor          = strVendor.AfterLast('\\');
+                    strVendor          = strVendor.AfterLast('/');
+                    wxString strExtension = from_u8(iter->path().string()).AfterLast('.').Lower();
+                    if (strExtension.CmpNoCase("json") != 0 || loaded_vendors.find(w2s(strVendor)) != loaded_vendors.end())
+                        continue;
+                    LoadProfileFamily(w2s(strVendor), iter->path().string());
+                    loaded_vendors.insert(w2s(strVendor));
+                }
+                if (*m_cancel_token) return 0;
+            }
+        }
+
+        // Capture the cancel token by value (shared_ptr) so the lambda doesn't
+        // touch `this` if GuideFrame is destroyed before the event fires.
+        auto tok = m_cancel_token;
+        wxGetApp().CallAfter([this, tok] {
+            if (!*tok)
+                on_profile_loaded();
         });
-    } catch (std::exception& e) {
-        // wxLogMessage("GUIDE: load_profile_error  %s ", e.what());
-        //  wxMessageBox(e.what(), "", MB_OK);
-        BOOST_LOG_TRIVIAL(error) << __FUNCTION__ << ", error: " << e.what() << std::endl;
+    } catch (const std::exception& e) {
+        BOOST_LOG_TRIVIAL(error) << __FUNCTION__ << ", error: " << e.what();
     }
 
     filament_info_cache.clear();

src/slic3r/GUI/WebGuideDialog.hpp

@@ -30,10 +30,14 @@
 #include "libslic3r/PresetBundle.hpp"
 #include "slic3r/Utils/PresetUpdater.hpp"
 
+#include <atomic>
+#include <memory>
 #include <unordered_map>
 
 #include <nlohmann/json.hpp>
 
+#include <boost/thread.hpp>
+
 namespace Slic3r { namespace GUI {
 
 class GuideFrame : public DPIDialog
@@ -78,6 +82,12 @@ public:
     int LoadProfileData();
     int SaveProfileData();
     int LoadProfileFamily(std::string strVendor, std::string strFilePath);
+    void init_guide_paths();
+    void on_profile_loaded();
+    bool BuildProfileJson(const PresetBundle& bundle, bool require_all_resource_vendors);
+    bool BuildProfileDataFromPresetBundle();
+    bool BuildProfileDataFromVendors();
+    void reset_profile_json();
     int SaveProfile();
     int GetFilamentInfo( std::string VendorDirectory,json & pFilaList, std::string filepath, std::string &sVendor, std::string &sType);
 
@@ -112,8 +122,11 @@ private:
 
     //First Load
     bool bFirstComplete{false};
-    bool m_destroy{false};
-    boost::thread* m_load_task{ nullptr };
+    // Set once in the destructor. Read through `this` by the loading thread
+    // (joined before `this` dies) and captured as the shared_ptr by CallAfter
+    // lambdas so they don't touch `this` after the object is freed.
+    std::shared_ptr<std::atomic<bool>> m_cancel_token{std::make_shared<std::atomic<bool>>(false)};
+    std::unique_ptr<boost::thread> m_load_task;
 
     // User Config
     bool PrivacyUse;
@@ -123,6 +136,7 @@ private:
     bool InstallNetplugin;
     bool network_plugin_ready {false};
 
+    json m_ProfileJson;
     json m_OrcaFilaList;
     std::string m_OrcaFilaLibPath;
 

src/slic3r/GUI/Widgets/Button.cpp

@@ -95,14 +95,11 @@ void Button::SetIcon(const wxString& icon)
     }
 }
 
-void Button::SetInactiveIcon(const wxString &icon)
+void Button::SetIcon(const wxBitmap& icon)
 {
-    if (!icon.IsEmpty()) {
-        // BBS set button icon default size to 20
-        this->inactive_icon = ScalableBitmap(this, icon.ToStdString(), this->active_icon.px_cnt());
-    } else {
-        this->inactive_icon = ScalableBitmap();
-    }
+    this->active_icon = ScalableBitmap();
+    this->active_icon.bmp() = icon;
+    messureSize();
     Refresh();
 }
 
@@ -257,12 +254,10 @@ void Button::SetStyle(const ButtonStyle style, const ButtonType type)
 
 void Button::Rescale()
 {
-    if (this->active_icon.bmp().IsOk())
+    // Only a named icon can be re-rasterized; one set from a wxBitmap has no source file,
+    if (!this->active_icon.name().empty())
         this->active_icon.msw_rescale();
 
-    if (this->inactive_icon.bmp().IsOk())
-        this->inactive_icon.msw_rescale();
-
     messureSize();
 
     if(m_has_style)
@@ -293,11 +288,7 @@ void Button::render(wxDC& dc)
     wxSize szIcon;
     wxSize textSize = this->textSize.GetSize();
 
-    ScalableBitmap icon;
-    if (m_selected || ((states & (int)StateColor::State::Hovered) != 0))
-        icon = active_icon;
-    else
-        icon = inactive_icon;
+    const ScalableBitmap& icon = active_icon;
     wxSize padding = this->paddingSize;
     int spacing = 5;
     // Wrap text
@@ -512,8 +503,8 @@ void Button::OnParentMotion(wxMouseEvent& event)
     {
         if (!tipWindow)
         {
-            tipWindow = new wxTipWindow(this, tip);
-            tipWindow->Bind(wxEVT_DESTROY, [this](wxEvent& event) { this->tipWindow = nullptr;});
+            tipWindow = wxTipWindow::New(this, tip);
+            if (!tipWindow) return event.Skip();
             tipWindow->Enable(false);
         }
 
@@ -531,7 +522,8 @@ void Button::OnParentMotion(wxMouseEvent& event)
     {
         if (tipWindow)
         {
-            delete tipWindow;
+            tipWindow->Dismiss();
+            tipWindow->Destroy();
             tipWindow = nullptr;
         }
     }
@@ -552,7 +544,7 @@ void Button::OnParentLeave(wxMouseEvent& event)
         if (!screen_rect.Contains(pos))
         {
             tipWindow->Dismiss();
-            delete tipWindow;
+            tipWindow->Destroy();
             tipWindow = nullptr;
         }
     }

src/slic3r/GUI/Widgets/Button.hpp

@@ -3,6 +3,7 @@
 
 #include "../wxExtensions.hpp"
 #include "StaticBox.hpp"
+#include <wx/tipwin.h>
 
 class ButtonProps
 {
@@ -27,14 +28,13 @@ enum class ButtonType{
     Expanded , // Font14  Semi-Rounded  For full length buttons. ex. buttons in static box
 };
 
-class wxTipWindow;
 class Button : public StaticBox
 {
+    wxTipWindow::Ref tipWindow;
     wxRect textSize;
     wxSize minSize; // set by outer
     wxSize paddingSize;
     ScalableBitmap active_icon;
-    ScalableBitmap inactive_icon;
 
     StateColor   text_color;
 
@@ -44,8 +44,6 @@ class Button : public StaticBox
     bool isCenter    = true;
     bool vertical    = false;
 
-    wxTipWindow* tipWindow = nullptr;
-
     static const int buttonWidth = 200;
     static const int buttonHeight = 50;
 
@@ -61,8 +59,7 @@ public:
     bool SetFont(const wxFont& font) override;
 
     void SetIcon(const wxString& icon);
-
-    void SetInactiveIcon(const wxString& icon);
+    void SetIcon(const wxBitmap& icon);
 
     void SetMinSize(const wxSize& size) override;
     void SetMaxSize(const wxSize& size) override;