#include "slic3r/GUI/CAD/DesignCanvas.hpp"

#include "slic3r/GUI/CAD/SketchInlineEditor.hpp"
#include "slic3r/GUI/CAD/DesignInteraction.hpp"
#include "slic3r/GUI/GLCanvas3D.hpp"
#include "slic3r/GUI/OpenGLManager.hpp"
#include "slic3r/GUI/3DBed.hpp"
#include "slic3r/GUI/Camera.hpp"   // N: look down the sketch plane normal
#include "slic3r/GUI/GUI_App.hpp"
#include "slic3r/GUI/Plater.hpp"
#include "libslic3r/Model.hpp"
#include "libslic3r/TriangleMesh.hpp"
#include "slic3r/GUI/3DScene.hpp"
#include "slic3r/GUI/MeshUtils.hpp"   // ClippingPlane (section view)
#include "libslic3r/Config.hpp"
#include <boost/algorithm/string/predicate.hpp>
#include <algorithm>
#include <cstdlib>

#include <wx/glcanvas.h>
#include <wx/stopwatch.h>   // wxGetLocalTimeMillis: the right-click vs right-hold budget
#include <wx/sizer.h>
#include <wx/frame.h>
#include <wx/stattext.h>
#include <wx/toplevel.h>

namespace Slic3r {
namespace GUI {

DesignCanvas::DesignCanvas(wxWindow* parent)
    : wxPanel()
{
    if (!Create(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, 0))
        return;

    m_canvas_widget = OpenGLManager::create_wxglcanvas(*this);
    if (m_canvas_widget == nullptr)
        return;

    m_canvas = new GLCanvas3D(m_canvas_widget, m_bed);
    m_canvas->set_context(wxGetApp().init_glcontext(*m_canvas_widget));
    m_canvas->allow_multisample(OpenGLManager::can_multisample());
    m_canvas->set_config(wxGetApp().plater()->config());
    m_canvas->set_model(&m_model);
    // Nothing to slice here, but GLCanvas3D derefs the process unguarded every frame, so it
    // cannot be null. Borrow the plater's, as the editor canvases do.
    m_canvas->set_process(&wxGetApp().plater()->background_process());
    m_canvas->set_type(GLCanvas3D::ECanvasType::CanvasView3D);

    // CAD navigation, this canvas only: left-drag sweeps a selection rubber band, so orbit
    // moves to middle-drag and pan to right-drag. Design is a different modality from
    // Prepare/Preview and every CAD the user already knows maps the mouse this way; the other
    // tabs are untouched.
    m_canvas->set_cad_navigation(true);

    m_canvas->enable_picking(false);   // viewport face/edge picking is custom (TODO)
    m_canvas->enable_moving(false);
    m_canvas->enable_gizmos(false);
    m_canvas->enable_selection(false); // stock volume selection unused; solid highlight is tree-driven
    m_canvas->enable_main_toolbar(false);
    m_canvas->enable_select_plate_toolbar(false);
    m_canvas->enable_assemble_view_toolbar(false);
    m_canvas->enable_separator_toolbar(false);
    m_canvas->enable_collapse_toolbar(false);
    m_canvas->enable_plate_chrome(false);
    m_canvas->enable_labels(false);
    m_canvas->set_axes_at_bed_center(true);   // triad at bed centre = modeling origin

    m_canvas->set_design_sketch_tool(&m_sketch_tool);
    m_sketch_tool.on_commit = [this](const SketchProfile& prof, const SketchPlane& pl) {
        if (m_on_sketch_commit) m_on_sketch_commit(prof, pl);
        if (m_canvas) m_canvas->set_as_dirty();
        if (m_canvas_widget) m_canvas_widget->Refresh();
    };
    m_sketch_tool.on_commit_entities = [this](const std::vector<SketchEntity>& ents,
                                              const std::vector<SketchEntityConstraintDef>& cons,
                                              const SketchPlane& pl) {
        if (m_on_sketch_entities_commit) m_on_sketch_entities_commit(ents, cons, pl);
        if (m_canvas) m_canvas->set_as_dirty();
        if (m_canvas_widget) m_canvas_widget->Refresh();
    };

    // Onshape-style in-canvas value editor, floating over the GL canvas. The tool hands
    // us a screen pixel (device px) + a commit/cancel pair; we convert to logical client
    // px and wrap the callbacks so each one re-solves and re-renders the viewport.
    m_inline_editor = std::make_unique<SketchInlineEditor>();
    // The tool draws it: it owns the frame's ImGui pass and the render scale. Handing it a raw
    // pointer rather than the unique_ptr keeps the ownership where it was.
    m_sketch_tool.inline_editor = m_inline_editor.get();
    m_inline_editor->request_frame = [this] { request_repaint(); };
    m_sketch_tool.on_inline_edit = [this](wxPoint screen_px, double current,
                                          const std::string& title,
                                          std::function<void(double)> commit,
                                          std::function<void()> cancel) {
        if (!m_inline_editor) { if (cancel) cancel(); return; }
        // The tool hands us canvas device px and the field is now drawn IN the canvas, so this
        // is already the coordinate space it wants — no conversion to screen coordinates, and no
        // window to place there.
        // Freeze the sketch tool while the field is open so a stray click/move on the GL
        // canvas can't draw under the field; released on commit or cancel.
        m_sketch_tool.set_inline_busy(true);
        // AND PUT THE KEYBOARD ON THE CANVAS. The field is drawn by ImGui, and ImGui is fed from
        // GLCanvas3D's own key handler, so a key only reaches it if the canvas is the focused
        // widget. That is a focus move WITHIN one window — the toolkit's business, not the window
        // manager's, which is the whole point of not being a window any more — but it still has
        // to be asked for: after a toolbar click or a tree selection the focus is elsewhere in
        // the panel, and the field would sit there taking nothing.
        if (m_canvas_widget) m_canvas_widget->SetFocus();
        m_inline_editor->open(screen_px, current, title,
            [this, commit](double v) {
                m_sketch_tool.set_inline_busy(false);
                if (commit) commit(v);
                request_repaint();
            },
            [this, cancel]() {
                m_sketch_tool.set_inline_busy(false);
                if (cancel) cancel();
                request_repaint();
            });
    };
    // Let the tool force-close the field (keep-as-drawn) — polyline right-click/double-click
    // ends the chain even while a per-segment value field is open.
    m_sketch_tool.on_inline_dismiss = [this]() {
        if (m_inline_editor) m_inline_editor->cancel();
    };
    m_sketch_tool.on_inline_commit = [this]() {
        if (m_inline_editor) m_inline_editor->commit();
    };

    // Bottom-right viewport HUD: a borderless, non-focusable float label showing the active
    // tool's current values. Top-level (a child widget is hidden by the GL surface, same as
    // the inline editor). Fed every frame by the tool's on_readout; empty text hides it.
    // NON-FOCUSABLE IS THE LOAD-BEARING WORD, and a wxFrame is not: see the header. The chip
    // outlives the gesture that drew it, and while it held the X input focus every sketch
    // shortcut was swallowed until the user clicked the canvas. Same window class as the status
    // chip below for the same reason. Do not "simplify" it back to a wxFrame.
    {
        wxWindow* top = wxGetTopLevelParent(m_canvas_widget);
        m_hud = new wxPopupWindow(top, wxBORDER_NONE);
        m_hud->SetBackgroundColour(wxColour(28, 30, 34));
        m_hud_label = new wxStaticText(m_hud, wxID_ANY, wxEmptyString);
        m_hud_label->SetForegroundColour(wxColour(0x46, 0xE0, 0xC8));   // teal, reads on dark bed
        wxFont f = m_hud_label->GetFont(); f.MakeBold(); m_hud_label->SetFont(f);
        auto* hs = new wxBoxSizer(wxHORIZONTAL);
        hs->Add(m_hud_label, 0, wxALL, 6);
        m_hud->SetSizerAndFit(hs);
        m_hud->Hide();
    }
    m_sketch_tool.on_readout = [this](const std::string& s) { set_readout(s); };

    // Bottom-LEFT twin, carrying the status line. Top-level for the same reason as the readout
    // (a child widget is hidden by the GL surface) but a wxPopupWindow rather than a wxFrame,
    // because a popup cannot take keyboard focus. The readout gets away with a frame only
    // because it appears mid-gesture and the next input is the mouse; this one is up
    // permanently and is re-raised on every status change. As a frame it took the WM's focus
    // each time and the canvas stopped receiving keys at all — every sketch shortcut silently
    // dead, which reads as a broken tool. Do not "simplify" it back to a wxFrame.
    // Its colour is set per message — the panel decides whether a line is neutral or an error.
    {
        wxWindow* top = wxGetTopLevelParent(m_canvas_widget);
        m_status_hud = new wxPopupWindow(top, wxBORDER_NONE);
        m_status_hud->SetBackgroundColour(wxColour(28, 30, 34));
        m_status_hud_label = new wxStaticText(m_status_hud, wxID_ANY, wxEmptyString);
        auto* ss = new wxBoxSizer(wxHORIZONTAL);
        // The line never wraps — there is a whole window's width down here — so the chip is
        // ONE LINE tall. Spacers rather than a wxALL border because the two axes want
        // different numbers: roomy at the sides so it reads as a label, and just enough top
        // and bottom to clear the descenders. Zero vertical clips the glyphs; 6 (what the
        // readout chip uses) makes it look like a two-line box.
        ss->AddSpacer(10);
        ss->Add(m_status_hud_label, 0, wxTOP | wxBOTTOM, 3);
        ss->AddSpacer(10);
        m_status_hud->SetSizerAndFit(ss);
        m_status_hud->Hide();
    }
    // A floating frame does not follow its parent, so the anchor has to be recomputed whenever
    // the canvas changes size (that bind is below bind_event_handlers(), for the reason given
    // there). The readout HUD gets away without this because it is transient; the status line is
    // on screen almost permanently and would visibly detach.
    // ...and it does not follow the WINDOW either. A popup is override-redirect: the window
    // manager does not own it, so minimising the app leaves the chip sitting on the bare desktop
    // (seen on the rig: whole screen black, chip still there), and it stacks above other
    // applications rather than behind them. IsShownOnScreen does not catch this — an iconised
    // frame still counts as shown — so the frame has to say so itself. Deactivating the app is
    // the same case one step weaker: the chip belongs to a viewport the user is no longer
    // looking at. Showing it back is safe because a popup cannot take focus, so neither event
    // can be re-triggered by our own Show().
    // Members rather than lambdas so unbind_canvas_event_handlers() can Unbind them: these sit on
    // a frame that OUTLIVES this canvas, and a lambda cannot be unbound.
    if (wxWindow* top = wxGetTopLevelParent(m_canvas_widget)) {
        top->Bind(wxEVT_ICONIZE,  &DesignCanvas::on_frame_iconize,  this);
        top->Bind(wxEVT_ACTIVATE, &DesignCanvas::on_frame_activate, this);
        // The anchor is an ABSOLUTE SCREEN position (ClientToScreen below), so moving the window
        // moves the canvas out from under a chip that stays where it was. Dragging the frame by
        // its title bar left the chip stranded mid-viewport until the next size, status or tab
        // change happened to re-place it. Nothing on the canvas fires for a move that does not
        // also resize, so it has to come from the frame.
        top->Bind(wxEVT_MOVE,     &DesignCanvas::on_status_hud_reanchor, this);
    }

    refresh_bed();

    // The view this canvas opens on. Built lazily, on the way into the Design tab, so this
    // is the view the user is looking at right now.
    m_parked_camera = wxGetApp().plater()->get_camera();

    // Before any of this class's own Binds below: wx calls dynamically bound handlers in
    // reverse order of binding, and GLCanvas3D swallows several events without skipping them —
    // wxEVT_RIGHT_UP and wxEVT_ENTER_WINDOW in on_mouse, and wxEVT_SIZE in on_size, which is
    // just `m_dirty = true;`. For those, whatever is bound LAST is the only handler that runs.
    // The context menu, the focus-follows-mouse and the status-chip re-anchor all depend on
    // running first, which is only true while this call stays ahead of them.
    m_canvas->bind_event_handlers();

    // The status-chip re-anchor promised above, bound AFTER the call so it runs first — ahead of
    // it the handler never ran at all, leaving a stale anchor and wrap width after any resize
    // that did not also move the frame or change the text. Its e.Skip() is load-bearing the
    // other way: it falls through to on_size, which is what still marks the canvas dirty.
    m_canvas_widget->Bind(wxEVT_SIZE, &DesignCanvas::on_status_hud_reanchor, this);

    // The Design GL canvas only receives key events (Esc to exit/enter Select, Ctrl+Z undo)
    // while it holds keyboard focus. Clicking a side-panel button steals focus, after which
    // Esc/Ctrl+Z silently do nothing until the viewport is clicked again. Restore focus
    // whenever the pointer enters the viewport (focus-follows-mouse, standard CAD behaviour).
    m_canvas_widget->Bind(wxEVT_ENTER_WINDOW, [this](wxMouseEvent& e) {
        // …but NOT while an inline value field is open: the field floats over the canvas, so
        // the smallest pointer jiggle re-enters the viewport and would yank focus off the
        // field (the "no cursor focus on the number, click to focus" bug).
        if (m_canvas_widget && !m_sketch_tool.inline_busy()) m_canvas_widget->SetFocus();
        e.Skip();
    });


    auto* sizer = new wxBoxSizer(wxVERTICAL);
    sizer->Add(m_canvas_widget, 1, wxEXPAND);
    SetSizer(sizer);
    SetMinSize(wxSize(300, 300));
}

// Both are idempotent, and neither destroys anything: the destructor still owns that.
void DesignCanvas::unbind_canvas_event_handlers()
{
    if (wxWindow* top = wxGetTopLevelParent(m_canvas_widget)) {
        top->Unbind(wxEVT_ICONIZE,  &DesignCanvas::on_frame_iconize,      this);
        top->Unbind(wxEVT_ACTIVATE, &DesignCanvas::on_frame_activate,     this);
        top->Unbind(wxEVT_MOVE,     &DesignCanvas::on_status_hud_reanchor, this);
    }
    // Before the popups go down, or a resize still in flight re-places and re-shows the chip.
    if (m_canvas_widget)
        m_canvas_widget->Unbind(wxEVT_SIZE, &DesignCanvas::on_status_hud_reanchor, this);
    // A popup is override-redirect: it does not go down with the frame, so one left showing sits
    // on the bare desktop for however long the teardown takes.
    show_status_hud(false);
    if (m_hud) m_hud->Hide();
    if (m_canvas) m_canvas->unbind_event_handlers();
}

void DesignCanvas::reset_canvas_volumes()
{
    if (m_canvas) m_canvas->reset_volumes();
}

DesignCanvas::~DesignCanvas()
{
    if (m_hud) m_hud->Destroy();
    delete m_canvas;
    delete m_canvas_widget;
}

// Distinct per-body colours (Onshape-style). Body 0 keeps the familiar gold; the rest
// cycle through a small saturated palette so coexisting solids read as separate parts.
static ColorRGBA body_palette(int body_idx)
{
    static const ColorRGBA kPalette[] = {
        ColorRGBA(0.86f, 0.66f, 0.20f, 1.0f),  // gold
        ColorRGBA(0.30f, 0.62f, 0.90f, 1.0f),  // blue
        ColorRGBA(0.45f, 0.78f, 0.42f, 1.0f),  // green
        ColorRGBA(0.86f, 0.45f, 0.40f, 1.0f),  // coral
        ColorRGBA(0.70f, 0.52f, 0.86f, 1.0f),  // violet
        ColorRGBA(0.90f, 0.70f, 0.35f, 1.0f),  // amber
    };
    const int n = int(sizeof(kPalette) / sizeof(kPalette[0]));
    return kPalette[((body_idx % n) + n) % n];
}

void DesignCanvas::request_repaint()
{
    if (!m_canvas)
        return;
    m_canvas->set_as_dirty();

    // NOTHING may touch GL before the canvas has initialised it. The backend probe below calls
    // OpenGLManager::get_gl_info().get_renderer(), which runs GLInfo::detect() -> glGetString
    // with no context current and, before init_opengl(), no loaded function pointers — a
    // segfault at startup with no window and nothing in the log. Anything that asks for a
    // repaint while the panel is still being built lands here, so the guard belongs at the top
    // rather than around the render() call: the crash was in the PROBE, not in the paint.
    if (!m_canvas->is_initialized()) {
        if (m_canvas_widget)
            m_canvas_widget->Refresh();   // the first real paint draws the current state anyway
        return;
    }

    if (m_sw_gl < 0) {
        // Cache the backend once it's known; the renderer string is empty until
        // GL is initialised, so stay "unknown" and take the safe direct path till then.
        const std::string& r = OpenGLManager::get_gl_info().get_renderer();
        if (!r.empty())
            m_sw_gl = (boost::icontains(r, "llvmpipe") || boost::icontains(r, "softpipe") ||
                       boost::icontains(r, "swrast")   || boost::icontains(r, "software")) ? 1 : 0;
    }

    if (m_sw_gl == 0) {
        if (m_canvas_widget)
            m_canvas_widget->Refresh();   // hardware GL: paint cycle drives render()
    } else {
        m_canvas->render();               // software GL or backend not yet known
    }
}

void DesignCanvas::enter_viewport()
{
    if (!m_camera_swapped) swap_camera();
}

void DesignCanvas::leave_viewport()
{
    if (m_camera_swapped) swap_camera();
}

void DesignCanvas::swap_camera()
{
    Plater* plater = wxGetApp().plater();
    if (plater == nullptr) return;
    std::swap(plater->get_camera(), m_parked_camera);
    m_camera_swapped = !m_camera_swapped;
}

void DesignCanvas::force_repaint()
{
    if (m_canvas == nullptr || m_canvas_widget == nullptr)
        return;

    CallAfter([this]() {
        if (m_canvas == nullptr || m_canvas_widget == nullptr)
            return;
        m_canvas->set_as_dirty();
        m_canvas_widget->Refresh();
        m_canvas_widget->Update();   // synchronous: an expose may never come after a page show
    });
}

void DesignCanvas::repaint_now()
{
    if (m_canvas == nullptr || m_canvas_widget == nullptr)
        return;
    request_repaint();            // mark dirty + Refresh (hardware GL) or render (software GL)
    m_canvas_widget->Update();    // service the pending paint immediately (a modal popup owns the loop)
}

void DesignCanvas::reload(bool keep_view)
{
    m_canvas->reset_volumes();

    for (int i = 0; i < (int)m_model.objects.size(); ++i)
        m_canvas->load_object(m_model, i);

    const ColorRGBA sel_gold = design_selection_color();   // same colour as every other selection
    const ColorRGBA ghost(0.26f, 0.66f, 1.0f, 0.45f);

    const auto& volumes = m_canvas->get_volumes().volumes;
    for (auto* v : volumes) {
        int obj_idx = v->object_idx();
        if (obj_idx == 0) {
            // Object 0 holds one volume per body — colour each by its body index so
            // multiple coexisting solids are visually distinct (Onshape per-part colour).
            const int b = v->volume_idx();
            bool hidden = (b >= 0 && b < int(m_body_visible.size())) && !m_body_visible[b];
            // Preview-only mode (fillet/chamfer/draft, once a valid target is picked): hide
            // every base body so only the result ghost is on screen until Confirm.
            if (m_body_hidden) hidden = true;
            v->is_active = !hidden;   // per-body visibility toggle
            if (!hidden) {
                // An EXPLICIT colour outranks the selection tint. m_body_selected is a
                // document-wide flag raised whenever a non-Sketch feature row is selected —
                // the normal resting state after any modelling operation — so painting every
                // body gold on it made the Color tool look broken: the override was written,
                // carried across recompute and read back correctly, and then overpainted here
                // every single frame. A body the user deliberately coloured keeps its colour;
                // the rest still tint, which is all the tint was ever for.
                const bool overridden = m_color_bodies != nullptr && b >= 0
                                        && b < int(m_color_bodies->size())
                                        && (*m_color_bodies)[b].has_color;
                ColorRGBA c = (m_body_selected && !overridden) ? sel_gold : body_color(b);
                if (b == m_hl_body_target)    c = ColorRGBA(0.30f, 0.90f, 0.70f, 1.0f); // target = teal-green
                else if (b == m_hl_body_tool) c = ColorRGBA(1.00f, 0.55f, 0.15f, 1.0f); // tool = orange
                if (m_body_translucent) c.a(0.30f);
                else if (m_xray_focus >= 0 && b != m_xray_focus) c.a(0.25f);
                v->set_color(c);
            }
        } else if (obj_idx == 1) {
            // The ghost is normally a faint blue overlay on the visible body. In preview-only
            // mode it IS the result (base bodies hidden), so render it opaque so it reads as a
            // finished solid rather than a see-through hint.
            v->set_color(m_body_hidden ? ColorRGBA(0.40f, 0.82f, 1.0f, 1.0f) : ghost);
        }
    }

    if (!keep_view) {
        if (m_first_frame && !m_model.objects.empty()) {
            m_canvas->select_view("iso");
            m_canvas->zoom_to_volumes();
            m_first_frame = false;
        }
    }

    m_canvas->set_as_dirty();
    if (m_canvas_widget)
        m_canvas_widget->Refresh();
}

void DesignCanvas::set_mesh(const TriangleMesh& mesh)
{
    if (m_model.objects.empty()) {
        auto* obj = m_model.add_object();
        obj->add_volume(mesh);
        obj->add_instance();
    } else {
        ModelObject* obj = m_model.objects.front();
        obj->clear_volumes();
        obj->add_volume(mesh);
        if (obj->instances.empty())
            obj->add_instance();
    }

    reload(!m_first_frame);
}

void DesignCanvas::set_bodies(const std::vector<TriangleMesh>& body_meshes,
                              const std::vector<bool>& visible)
{
    // Object 0 carries one GLVolume per body so reload() can colour each distinctly.
    // Falls back to a single-volume object when there's only one body (identical look
    // to the old set_mesh path). Picking still uses the combined mesh via set_solid_pick.
    m_body_visible = visible;   // empty => all visible; reload() reads this per volume
    if (body_meshes.empty()) { clear_mesh(); return; }

    ModelObject* obj = m_model.objects.empty() ? m_model.add_object()
                                               : m_model.objects.front();
    obj->clear_volumes();
    for (const TriangleMesh& m : body_meshes)
        obj->add_volume(m);
    if (obj->instances.empty())
        obj->add_instance();

    reload(!m_first_frame);
}

void DesignCanvas::clear_mesh()
{
    if (!m_model.objects.empty()) {
        m_model.delete_object((size_t)0);
        reload(true);
    }
}

void DesignCanvas::set_preview_mesh(const TriangleMesh& mesh)
{
    // Remove existing ghost (object 1) if present
    if (m_model.objects.size() > 1)
        m_model.delete_object((size_t)1);

    auto* obj = m_model.add_object();
    obj->add_volume(mesh);
    obj->add_instance();

    reload(true);
}

void DesignCanvas::clear_preview()
{
    if (m_model.objects.size() > 1) {
        m_model.delete_object((size_t)1);
        reload(true);
    }
}

void DesignCanvas::fit_view()
{
    if (m_canvas && !m_model.objects.empty()) {
        m_canvas->zoom_to_volumes();
        m_canvas->set_as_dirty();
        if (m_canvas_widget)
            m_canvas_widget->Refresh();
    }
}

void DesignCanvas::set_view(const std::string& view_name)
{
    if (m_canvas) {
        m_canvas->select_view(view_name);
        m_canvas->zoom_to_volumes();
        m_canvas->set_as_dirty();
        if (m_canvas_widget)
            m_canvas_widget->Refresh();
    }
}

void DesignCanvas::begin_sketch(const SketchPlane& plane, DesignSketchTool::Mode mode)
{
    m_sketch_tool.begin(plane, mode);
    if (m_canvas) m_canvas->set_as_dirty();
    if (m_canvas_widget) m_canvas_widget->Refresh();
}

void DesignCanvas::set_sketch_plane(const SketchPlane& plane)
{
    m_sketch_tool.set_plane(plane);   // keeps the 2D entities; only the carrier plane changes
    if (m_canvas) m_canvas->set_as_dirty();
    if (m_canvas_widget) m_canvas_widget->Refresh();
}

void DesignCanvas::edit_sketch(const std::vector<SketchEntity>& entities,
                               const std::vector<SketchEntityConstraintDef>& constraints,
                               const SketchPlane& plane)
{
    m_sketch_tool.begin_edit(entities, constraints, plane);
    if (m_canvas) m_canvas->set_as_dirty();
    if (m_canvas_widget) m_canvas_widget->Refresh();
}

void DesignCanvas::set_sketch_tool(DesignSketchTool::Mode mode)
{
    m_sketch_tool.set_tool(mode);
    if (m_canvas) m_canvas->set_as_dirty();
    if (m_canvas_widget) m_canvas_widget->Refresh();
}

void DesignCanvas::set_sketch_construction(bool c)
{
    m_sketch_tool.set_construction(c);
}

bool DesignCanvas::edit_sketch_selection_value()
{
    const bool ok = m_sketch_tool.open_selection_dimension_editor();
    if (ok) request_repaint();
    return ok;
}

int DesignCanvas::toggle_sketch_construction_selection()
{
    const int n = m_sketch_tool.toggle_selection_construction();
    if (n > 0) request_repaint();
    return n;
}

bool DesignCanvas::add_sketch_regions(
    const std::vector<std::vector<std::vector<Vec2d>>>& regions)
{
    const bool ok = m_sketch_tool.add_imported_regions(regions);
    if (ok) request_repaint();
    return ok;
}

void DesignCanvas::set_sketch_polygon_sides(int n)
{
    m_sketch_tool.set_polygon_sides(n);
}

void DesignCanvas::set_sketch_polygon_circumscribed(bool c)
{
    m_sketch_tool.set_polygon_circumscribed(c);
}

void DesignCanvas::finish_sketch()
{
    m_sketch_tool.finish();
    if (m_canvas) m_canvas->set_as_dirty();
    if (m_canvas_widget) m_canvas_widget->Refresh();
}

// Sync the Design bed to the CURRENT printer bed. Done on every tab activation, not just at
// construction: the panel is built early (before the active printer profile is fully applied),
// so a one-shot read picked up the 200x200 default while the real bed (e.g. 270x270) only
// loaded later — leaving the PartPlate grid spilling past the smaller bed quad.
void DesignCanvas::refresh_bed()
{
    const DynamicPrintConfig* config = wxGetApp().plater()->config();
    if (!config) return;
    const auto* bed_shape_opt = config->opt<ConfigOptionPoints>("printable_area");
    if (!bed_shape_opt) return;
    double printable_height = 100.0;
    const auto* ph_opt = config->opt<ConfigOptionFloat>("printable_height");
    if (ph_opt) printable_height = ph_opt->value;
    m_bed.set_shape(bed_shape_opt->values, printable_height, {}, {}, "", false);  // mainline added extruder_areas/heights params
}

void DesignCanvas::set_show_bed(bool b)
{
    if (!m_canvas) return;
    if (m_canvas->get_show_bed() == b) return;   // no repaint for a no-op toggle
    m_canvas->set_show_bed(b);
    request_repaint();
}

bool DesignCanvas::is_sketching() const { return m_sketch_tool.is_active(); }

void DesignCanvas::cancel_sketch()
{
    m_sketch_tool.cancel();
    if (m_canvas) m_canvas->set_as_dirty();
    if (m_canvas_widget) m_canvas_widget->Refresh();
}

void DesignCanvas::set_on_sketch_commit(std::function<void(const SketchProfile&, const SketchPlane&)> cb)
{
    m_on_sketch_commit = std::move(cb);
}

void DesignCanvas::set_on_sketch_entities_commit(
    std::function<void(const std::vector<SketchEntity>&,
                       const std::vector<SketchEntityConstraintDef>&,
                       const SketchPlane&)> cb)
{
    m_on_sketch_entities_commit = std::move(cb);
}

void DesignCanvas::set_on_segment_drawn(std::function<void(double, double)> cb)
{
    m_sketch_tool.on_segment_drawn = std::move(cb);
}

void DesignCanvas::set_on_cursor_metrics(std::function<void(double, double, bool)> cb)
{
    m_sketch_tool.on_cursor_metrics = std::move(cb);
}

void DesignCanvas::set_on_solve_state(std::function<void(int, bool, bool)> cb)
{
    m_sketch_tool.on_solve_state = std::move(cb);
}

void DesignCanvas::set_on_sketch_step(std::function<void(DesignSketchTool::Mode, int, int)> cb)
{
    m_sketch_tool.on_step_changed = std::move(cb);
}

void DesignCanvas::apply_segment_length(double len)
{
    m_sketch_tool.apply_segment_length(len);
    request_repaint();
}

void DesignCanvas::keep_segment_as_drawn()
{
    m_sketch_tool.keep_segment_as_drawn();
    request_repaint();
}

void DesignCanvas::set_on_sketch_selection_changed(std::function<void(int)> cb)
{
    m_sketch_tool.on_selection_changed = std::move(cb);
}

void DesignCanvas::set_on_sketch_face_selected(std::function<void(int)> cb)
{
    m_sketch_tool.on_face_selected = std::move(cb);
}

void DesignCanvas::set_on_display_sketch_selected(std::function<void(int, int, int)> cb)
{
    m_sketch_tool.on_display_sketch_selected = std::move(cb);
}

void DesignCanvas::set_on_display_sketch_activated(std::function<void(int)> cb)
{
    m_sketch_tool.on_display_sketch_activated = std::move(cb);
}

std::vector<SketchEntity> DesignCanvas::selected_loop_entities() const
{
    return m_sketch_tool.selected_loop_entities();
}

std::vector<std::vector<int>> DesignCanvas::region_entity_indices(const std::vector<SketchEntity>& ents) const
{
    return m_sketch_tool.region_entity_indices(ents);
}

std::vector<std::vector<int>> DesignCanvas::region_entity_indices_with_holes(const std::vector<SketchEntity>& ents) const
{
    return m_sketch_tool.region_entity_indices_with_holes(ents);
}

void DesignCanvas::clear_loop_pick()
{
    m_sketch_tool.clear_display_pick();
}

void DesignCanvas::set_loop_pick(int feature, int region)
{
    m_sketch_tool.set_display_pick(feature, region);
    request_repaint();
}

void DesignCanvas::set_escalate_on_repick(bool on)
{
    m_sketch_tool.set_escalate_on_repick(on);
}

void DesignCanvas::set_solid_pick(const std::vector<CadBody>* bodies, const TriangleMesh* mesh,
                                  const std::vector<int>* tri_face, const std::vector<int>* tri_body,
                                  const std::vector<bool>* visible,
                                  const std::vector<Transform3d>* xform)
{
    m_color_bodies = bodies;   // stable address (m_doc.bodies); reload() reads colour overrides
    m_sketch_tool.set_solid_pick(bodies, mesh, tri_face, tri_body, visible, xform);
}

// Effective display colour for a body: per-body override (Color tool) when set, else the
// auto body-index palette. body_palette() is the file-static helper defined above reload().
ColorRGBA DesignCanvas::body_color(int body) const
{
    if (m_color_bodies != nullptr && body >= 0 && body < int(m_color_bodies->size())
        && (*m_color_bodies)[body].has_color)
        return (*m_color_bodies)[body].color;
    return body_palette(body);
}

void DesignCanvas::begin_move_body(int body, const Vec3d& pivot, const Transform3d& base_xform,
                                   double body_radius)
{
    m_sketch_tool.set_move_gizmo(body, pivot, base_xform, body_radius);
    request_repaint();
}

void DesignCanvas::clear_move_gizmo()
{
    m_sketch_tool.clear_move_gizmo();
    request_repaint();
}

bool DesignCanvas::moving_body() const { return m_sketch_tool.moving_body(); }

void DesignCanvas::set_on_body_move_changed(std::function<void(int, const Transform3d&)> cb)
{
    m_sketch_tool.on_body_move_changed = std::move(cb);
}

bool DesignCanvas::begin_fillet_gizmo(const Vec3d& body_centroid, double radius)
{
    const bool ok = m_sketch_tool.set_fillet_gizmo(body_centroid, radius);
    request_repaint();
    return ok;
}

void DesignCanvas::clear_fillet_gizmo()
{
    m_sketch_tool.clear_fillet_gizmo();
    request_repaint();
}

bool DesignCanvas::filleting() const { return m_sketch_tool.filleting(); }

void DesignCanvas::set_on_fillet_radius_changed(std::function<void(double)> cb)
{
    m_sketch_tool.on_fillet_radius_changed = std::move(cb);
}

void DesignCanvas::begin_hole_gizmo(const SketchPlane& plane, double x, double y,
                                    double diameter, double depth, bool through)
{
    m_sketch_tool.set_hole_gizmo(plane, x, y, diameter, depth, through);
    request_repaint();
}

void DesignCanvas::set_hole_face_bounds(bool has, double umin, double umax, double vmin, double vmax)
{
    m_sketch_tool.set_hole_face_bounds(has, umin, umax, vmin, vmax);
}

void DesignCanvas::clear_hole_gizmo()
{
    m_sketch_tool.clear_hole_gizmo();
    request_repaint();
}

bool DesignCanvas::holing() const { return m_sketch_tool.holing(); }

void DesignCanvas::set_on_hole_changed(std::function<void(double, double, double, double)> cb)
{
    m_sketch_tool.on_hole_changed = std::move(cb);
}

void DesignCanvas::begin_thread_gizmo(const SketchPlane& plane, double x, double y,
                                      double radius, double height)
{
    m_sketch_tool.set_thread_gizmo(plane, x, y, radius, height);
    request_repaint();
}

void DesignCanvas::clear_thread_gizmo()
{
    m_sketch_tool.clear_thread_gizmo();
    request_repaint();
}

bool DesignCanvas::threading() const { return m_sketch_tool.threading(); }

void DesignCanvas::set_on_thread_changed(std::function<void(double, double, double, double)> cb)
{
    m_sketch_tool.on_thread_changed = std::move(cb);
}

void DesignCanvas::begin_shell_gizmo(const Vec3d& face_centroid, const Vec3d& inward_dir,
                                     double thickness)
{
    m_sketch_tool.set_shell_gizmo(face_centroid, inward_dir, thickness);
    request_repaint();
}

void DesignCanvas::clear_shell_gizmo()
{
    m_sketch_tool.clear_shell_gizmo();
    request_repaint();
}

bool DesignCanvas::shelling() const { return m_sketch_tool.shelling(); }

void DesignCanvas::set_on_shell_thickness_changed(std::function<void(double)> cb)
{
    m_sketch_tool.on_shell_thickness_changed = std::move(cb);
}

void DesignCanvas::begin_revolve_gizmo(const SketchPlane& plane, const Vec2d& centroid,
                                       int axis_sel, double angle, bool flip)
{
    m_sketch_tool.set_revolve_gizmo(plane, centroid, axis_sel, angle, flip);
    request_repaint();
}

void DesignCanvas::clear_revolve_gizmo()
{
    m_sketch_tool.clear_revolve_gizmo();
    request_repaint();
}

bool DesignCanvas::revolving() const { return m_sketch_tool.revolving(); }

void DesignCanvas::set_on_revolve_angle_changed(std::function<void(double)> cb)
{
    m_sketch_tool.on_revolve_angle_changed = std::move(cb);
}

void DesignCanvas::set_draft_gizmo(const Vec3d& face_centroid, const Vec3d& face_normal, double angle)
{
    m_sketch_tool.set_draft_gizmo(face_centroid, face_normal, angle);
    request_repaint();
}

void DesignCanvas::clear_draft_gizmo()
{
    m_sketch_tool.clear_draft_gizmo();
    request_repaint();
}

bool DesignCanvas::drafting() const { return m_sketch_tool.drafting(); }

void DesignCanvas::set_on_draft_angle_changed(std::function<void(double)> cb)
{
    m_sketch_tool.set_on_draft_angle_changed(std::move(cb));
}

void DesignCanvas::set_cut_gizmo(const SketchPlane& plane, double offset, const Vec3d& body_center, double half_extent)
{
    m_sketch_tool.set_cut_gizmo(plane, offset, body_center, half_extent);
    request_repaint();
}

void DesignCanvas::clear_cut_gizmo()
{
    m_sketch_tool.clear_cut_gizmo();
    request_repaint();
}

bool DesignCanvas::cutting() const { return m_sketch_tool.cutting(); }

void DesignCanvas::set_on_cut_offset_changed(std::function<void(double)> cb)
{
    m_sketch_tool.set_on_cut_offset_changed(std::move(cb));
}

void DesignCanvas::begin_pattern_gizmo(const SketchPlane& plane, const Vec3d& body_centroid,
                                       bool circular, int count, int dir, double spacing, double angle)
{
    m_sketch_tool.set_pattern_gizmo(plane, body_centroid, circular, count, dir, spacing, angle);
    request_repaint();
}

void DesignCanvas::clear_pattern_gizmo()
{
    m_sketch_tool.clear_pattern_gizmo();
    request_repaint();
}

bool DesignCanvas::patterning() const { return m_sketch_tool.patterning(); }

void DesignCanvas::set_on_pattern_changed(std::function<void(double)> cb)
{
    m_sketch_tool.on_pattern_changed = std::move(cb);
}

void DesignCanvas::set_on_solid_selection_changed(std::function<void(int, int, int, int)> cb)
{
    m_sketch_tool.on_solid_selection_changed = std::move(cb);
}

void DesignCanvas::set_on_place_on_face(std::function<bool()> cb)
{
    m_sketch_tool.on_place_on_face = std::move(cb);
}

void DesignCanvas::select_body(int body)
{
    m_sketch_tool.select_body(body);
    request_repaint();
}

void DesignCanvas::set_extrude_gizmo(const SketchPlane& plane, const Vec2d& centroid,
                                     double depth, double depth2, bool two_sided, bool flip)
{
    m_sketch_tool.set_extrude_gizmo(plane, centroid, depth, depth2, two_sided, flip);
    request_repaint();
}

void DesignCanvas::clear_extrude_gizmo()
{
    m_sketch_tool.clear_extrude_gizmo();
    request_repaint();
}

void DesignCanvas::set_on_extrude_depth_changed(std::function<void(double, bool)> cb)
{
    m_sketch_tool.on_extrude_depth_changed = std::move(cb);
}

void DesignCanvas::set_datum_gizmo(const SketchPlane& plane, double usize, double vsize,
                                   const Vec3d& base_origin, const Vec3d& base_normal,
                                   double offset, bool offset_on)
{
    m_sketch_tool.set_datum_gizmo(plane, usize, vsize, base_origin, base_normal, offset, offset_on);
    request_repaint();
}

void DesignCanvas::clear_datum_gizmo()
{
    m_sketch_tool.clear_datum_gizmo();
    request_repaint();
}

void DesignCanvas::set_on_datum_size_changed(std::function<void(double, double)> cb)
{
    m_sketch_tool.on_datum_size_changed = std::move(cb);
}

void DesignCanvas::set_on_datum_offset_changed(std::function<void(double)> cb)
{
    m_sketch_tool.on_datum_offset_changed = std::move(cb);
}

void DesignCanvas::set_helix_gizmo(const SketchPlane& plane, double radius, double pitch,
                                   double height, double taper, bool left_handed)
{
    m_sketch_tool.set_helix_gizmo(plane, radius, pitch, height, taper, left_handed);
    request_repaint();
}

void DesignCanvas::clear_helix_gizmo()
{
    m_sketch_tool.clear_helix_gizmo();
    request_repaint();
}

void DesignCanvas::set_on_helix_changed(std::function<void(double, double, double)> cb)
{
    m_sketch_tool.on_helix_changed = std::move(cb);
}

void DesignCanvas::set_rib_gizmo(const SketchPlane& plane, const Vec2d& p0, const Vec2d& p1,
                                 double thickness)
{
    m_sketch_tool.set_rib_gizmo(plane, p0, p1, thickness);
    request_repaint();
}

void DesignCanvas::clear_rib_gizmo()
{
    m_sketch_tool.clear_rib_gizmo();
    request_repaint();
}

void DesignCanvas::set_on_rib_thickness_changed(std::function<void(double)> cb)
{
    m_sketch_tool.on_rib_thickness_changed = std::move(cb);
}

void DesignCanvas::set_base_pick(std::vector<SketchPlane> planes, std::vector<int> bases,
                                std::vector<std::string> labels)
{
    m_sketch_tool.set_base_pick(std::move(planes), std::move(bases), std::move(labels));
    request_repaint();
}

void DesignCanvas::clear_base_pick()
{
    m_sketch_tool.clear_base_pick();
    request_repaint();
}

void DesignCanvas::set_on_datum_base_picked(std::function<void(int)> cb)
{
    m_sketch_tool.on_datum_base_picked = std::move(cb);
}

void DesignCanvas::set_on_sketch_exit(std::function<void()> cb)
{
    m_sketch_tool.on_exit = std::move(cb);
}

void DesignCanvas::set_on_sketch_exit_refused(std::function<void()> cb)
{
    m_sketch_tool.on_exit_refused = std::move(cb);
}

void DesignCanvas::set_on_move_exit(std::function<void()> cb)
{
    m_sketch_tool.on_move_exit = std::move(cb);
}

void DesignCanvas::set_on_context_menu(std::function<void(const wxPoint&)> cb)
{
    m_on_context_menu = std::move(cb);
    if (!m_canvas_widget || m_ctx_bound)
        return;
    m_ctx_bound = true;
    // Bound AFTER GLCanvas3D's own handlers, so this runs first and can consume the event.
    // It only consumes when it actually opens the offer; every other right-click still falls
    // through to the polyline-chain end and the move gizmo, which were there first.
    // Right-drag pans. Without remembering where the press landed, every pan ended by popping
    // the offer over wherever the camera stopped — the menu appearing as the reward for moving
    // the view. The offer is the release of a STATIONARY right-click, at the same 8 px budget
    // the left-click pick uses.
    m_canvas_widget->Bind(wxEVT_RIGHT_DOWN, [this](wxMouseEvent& e) {
        m_ctx_press    = e.GetPosition();
        m_ctx_press_ms = wxGetLocalTimeMillis().GetValue();
        e.Skip();     // the canvas still needs the press to seed the orbit
    });
    m_canvas_widget->Bind(wxEVT_RIGHT_UP, [this](wxMouseEvent& e) {
        const wxPoint d  = e.GetPosition() - m_ctx_press;
        const long long dt = wxGetLocalTimeMillis().GetValue() - m_ctx_press_ms;
        // Always read-and-clear, even when another guard already rules the offer out, or a
        // terminator recorded under one condition would still be pending under the next.
        const bool terminated = m_sketch_tool.take_right_consumed();
        // Click, or navigation? Both budgets must hold: a press that travelled orbited, and a
        // press that was HELD was aiming to orbit even if the hand never quite moved. Two
        // independent budgets because the two failure modes are independent — the drift one
        // alone still popped a menu at the end of a slow, careful orbit.
        const bool is_click = std::max(std::abs(d.x), std::abs(d.y)) <= kCadRightClickDriftPx
                              && dt <= kCadRightClickMs;
        if (m_on_context_menu && !terminated && !inline_busy() && is_click) {
            // The menu belongs to what you POINTED AT — and pointing happened at the PRESS, not
            // at the release, so the raycast uses the press position. Within a 3 px budget the
            // two are the same pixel in practice; using the press is what makes that a
            // guarantee rather than a coincidence. Pick first, so a right-click on a line offers
            // that line's verbs instead of the empty-selection vocabulary. Selecting an entity
            // that is already selected is a no-op, so a multi-entity pick survives a
            // right-click on one of its members.
            if (m_canvas && m_sketch_tool.select_at_screen(*m_canvas, m_ctx_press.x, m_ctx_press.y))
                request_repaint();
            m_on_context_menu(m_canvas_widget->ClientToScreen(m_ctx_press));
            return;   // consumed
        }
        e.Skip();
    });
}

void DesignCanvas::set_on_undo_redo(std::function<void(bool)> cb)
{
    m_sketch_tool.on_undo_redo = std::move(cb);
}

void DesignCanvas::set_display_sketches(std::vector<DesignSketchTool::DisplaySketch> ds)
{
    m_sketch_tool.set_display_sketches(std::move(ds));
    // Overlay changed programmatically (no mouse event) — force a repaint.
    request_repaint();
}

void DesignCanvas::set_datum_planes(std::vector<SketchPlane> planes, std::vector<Vec2d> sizes)
{
    m_sketch_tool.set_datum_planes(std::move(planes), std::move(sizes));
    request_repaint();
}

void DesignCanvas::set_mate_connectors(std::vector<DesignSketchTool::MateConnectorGlyph> g)
{
    m_sketch_tool.set_mate_connectors(std::move(g));
    request_repaint();
}

void DesignCanvas::set_mate_links(std::vector<std::pair<Vec3d, Vec3d>> l)
{
    m_sketch_tool.set_mate_links(std::move(l));
    request_repaint();
}

bool DesignCanvas::toggle_planes()
{
    const bool on = m_sketch_tool.toggle_show_planes();
    request_repaint();
    return on;
}

bool DesignCanvas::toggle_axes()
{
    const bool on = m_sketch_tool.toggle_show_axes();
    request_repaint();
    return on;
}

void DesignCanvas::set_section_plane(bool on, double z, bool keep_upper)
{
    m_section_on = on;
    // The kept half must read as a SOLID part, never a see-through ghost: make sure no leftover
    // preview translucency is applied while the section is on. Guarded — a no-op if already opaque.
    if (on) { set_body_translucent(false); set_body_hidden(false); }
    if (m_canvas) {
        if (on) {
            // GLCanvas3D turns the two clipping planes into a Z-RANGE: set_z_range(-p0.offset,
            // p1.offset). keep_upper=false keeps the LOWER half (z in [-1e5, z]); keep_upper=true
            // keeps the OPPOSITE, UPPER half (z in [z, +1e5]). Only HIDES geometry — no bodies.
            if (keep_upper) {
                m_canvas->set_clipping_plane(0, ClippingPlane(Vec3d(0.0, 0.0, 1.0), -z));     // min_z = z
                m_canvas->set_clipping_plane(1, ClippingPlane(Vec3d(0.0, 0.0, 1.0), 1.0e5));  // max_z = +1e5
            } else {
                m_canvas->set_clipping_plane(0, ClippingPlane(Vec3d(0.0, 0.0, 1.0), 1.0e5));  // min_z = -1e5
                m_canvas->set_clipping_plane(1, ClippingPlane(Vec3d(0.0, 0.0, 1.0), z));      // max_z = z
            }
            m_canvas->set_use_clipping_planes(true);
        } else {
            m_canvas->set_use_clipping_planes(false);
        }
        m_canvas->set_as_dirty();
    }
    request_repaint();
}

double DesignCanvas::model_mid_z() const
{
    const BoundingBoxf3 bb = m_model.bounding_box_exact();
    return bb.defined ? bb.center().z() : 0.0;
}

void DesignCanvas::set_readout(const std::string& text)
{
    if (!m_hud || !m_hud_label || !m_canvas_widget) return;
    if (text == m_hud_last) return;                 // only touch the WM on a real change
    m_hud_last = text;
    if (text.empty()) { m_hud->Hide(); return; }
    m_hud_label->SetLabel(wxString::FromUTF8(text));
    place_readout_hud();
}

void DesignCanvas::place_readout_hud()
{
    if (!m_hud || !m_hud_label || !m_canvas_widget) return;
    if (m_hud_last.empty() || !m_canvas_widget->IsShownOnScreen()) { m_hud->Hide(); return; }
    m_hud->Fit();
    // Anchor to the canvas's bottom-right corner with a small margin (screen coords).
    const wxSize  cs = m_canvas_widget->GetClientSize();
    const wxSize  hs = m_hud->GetSize();
    const wxPoint br = m_canvas_widget->ClientToScreen(
        wxPoint(cs.GetWidth() - hs.GetWidth() - 12, cs.GetHeight() - hs.GetHeight() - 12));
    if (!m_hud->IsShown()) m_hud->Show();           // Show before Move (GTK ignores pre-map Move)
    m_hud->Move(br);
    m_hud->Raise();
}

// A popup is override-redirect: the window manager does not own it, so an iconised or
// deactivated app would leave the chip sitting on the bare desktop. The status chip already
// had to answer this; now that the readout is a popup too, it answers it the same way.
void DesignCanvas::show_readout_hud(bool on)
{
    if (!m_hud) return;
    if (on) place_readout_hud();
    else    m_hud->Hide();
}

// Clear of the view cube and the two round view buttons, which own the bottom-left corner.
// Shared by the placement and by the wrap width, which have to agree or the chip wraps to a
// width it is then not given.
static constexpr int kStatusHudLeftInsetDip = 190;

void DesignCanvas::set_status_text(const wxString& text, const wxColour& colour)
{
    if (!m_status_hud || !m_status_hud_label || !m_canvas_widget) return;
    if (text == m_status_hud_last && colour == m_status_hud_colour) return;
    m_status_hud_last   = text;
    m_status_hud_colour = colour;
    if (text.IsEmpty()) { m_status_hud->Hide(); return; }
    m_status_hud_label->SetForegroundColour(colour);
    apply_status_label();
    place_status_hud();
}

// SetLabel + Wrap + Fit, in that order and always together. Moving the status out of the panel
// removed the clipping of snaporca-8cc but not the underlying problem: the chip is a top-level
// popup that Fit()s to its text, so a long sentence simply grew past the right edge of the canvas
// and hung over the window. Wrapping to the room actually available is what makes the earlier
// promise — "a sentence can be a sentence" — true at every window width, including the charter's
// 1366 reach. Wrap() rewrites the label it is given, so it must follow a fresh SetLabel every
// time; that is the whole reason this is one function instead of three call sites.
void DesignCanvas::apply_status_label()
{
    if (!m_status_hud || !m_status_hud_label || !m_canvas_widget) return;
    m_status_hud_label->SetLabel(m_status_hud_last);
    const int avail = m_canvas_widget->GetClientSize().GetWidth()
                      - m_canvas_widget->FromDIP(kStatusHudLeftInsetDip)
                      - m_canvas_widget->FromDIP(24);
    if (avail > m_canvas_widget->FromDIP(120))   // a uselessly narrow canvas: leave it unwrapped
        m_status_hud_label->Wrap(avail);
    m_status_hud->Fit();
}

void DesignCanvas::place_status_hud()
{
    if (!m_status_hud || !m_canvas_widget || m_status_hud_last.IsEmpty()) return;
    // The canvas has a client size even while its page is hidden, and it is not the size the
    // page will have when shown — anchoring against it put the chip up on the tab bar, where it
    // then stayed until the next status change moved it. Nothing to anchor to: stay down.
    if (!m_canvas_widget->IsShownOnScreen()) { m_status_hud->Hide(); return; }
    const wxSize cs = m_canvas_widget->GetClientSize();
    // Re-wrap first: this also runs on resize, and a chip wrapped for the old width either
    // overhangs a narrowed canvas or wastes a widened one.
    apply_status_label();
    const wxSize hs = m_status_hud->GetSize();
    const int kLeftInset = m_canvas_widget->FromDIP(kStatusHudLeftInsetDip);
    const wxPoint bl = m_canvas_widget->ClientToScreen(
        wxPoint(kLeftInset, cs.GetHeight() - hs.GetHeight() - 12));
    // No Raise() and no focus juggling: a popup neither takes focus nor falls behind. This was
    // caught with SNAPORCA_KEYTRACE — shift+S logged a line, the following R logged nothing, and
    // the only thing between them was the first status update showing this window.
    if (!m_status_hud->IsShown()) m_status_hud->Show();   // Show before Move (GTK ignores pre-map Move)
    m_status_hud->Move(bl);
}

void DesignCanvas::on_frame_iconize(wxIconizeEvent& e)
{
    show_status_hud(!e.IsIconized());
    show_readout_hud(!e.IsIconized());
    e.Skip();
}

void DesignCanvas::on_frame_activate(wxActivateEvent& e)
{
    show_status_hud(e.GetActive());
    show_readout_hud(e.GetActive());
    e.Skip();
}

// wxEvent& so one handler serves both events that invalidate the anchor: the frame moving out
// from under the chip, and the canvas resizing under it.
void DesignCanvas::on_status_hud_reanchor(wxEvent& e)
{
    place_status_hud();
    e.Skip();
}

void DesignCanvas::show_status_hud(bool on)
{
    if (!m_status_hud) return;
    if (on) place_status_hud();      // re-anchors first: the page may have been resized while away
    else    m_status_hud->Hide();
}

void DesignCanvas::set_body_highlight(bool on)
{
    if (m_body_selected == on) return;
    m_body_selected = on;
    reload(true);   // recolours the body volume (selected = cyan tint)
}

void DesignCanvas::set_operand_bodies(int target_body, int tool_body)
{
    if (m_hl_body_target == target_body && m_hl_body_tool == tool_body) return;
    m_hl_body_target = target_body;
    m_hl_body_tool   = tool_body;
    reload(true);      // recolours the body volumes (same idiom set_body_highlight uses)
}

void DesignCanvas::set_highlight_sketches(std::vector<std::pair<int, ColorRGBA>> hl)
{
    m_sketch_tool.set_highlight_sketches(std::move(hl));
    request_repaint();
}

void DesignCanvas::set_body_translucent(bool on)
{
    if (m_body_translucent == on) return;
    m_body_translucent = on;
    reload(true);   // re-applies object-0 alpha so the solid fades for the fillet preview
}

void DesignCanvas::set_xray_focus(int body)
{
    if (m_xray_focus == body) return;
    m_xray_focus = body;
    m_sketch_tool.set_pick_only_body(body);
    reload(true);   // re-applies per-body alpha so the non-focused bodies fade
}

void DesignCanvas::set_body_hidden(bool on)
{
    if (m_body_hidden == on) return;
    m_body_hidden = on;
    reload(true);   // hides/show base bodies + flips the ghost opaque/faint for preview-only mode
}

void DesignCanvas::delete_selected_sketch_entities()
{
    m_sketch_tool.delete_selected();
    request_repaint();
}

bool DesignCanvas::inline_busy() const
{
    // Two sources, still: the TOOL's flag says a value is pending, the editor says a field is
    // drawn. They agree now that the field is not a window — the orphan state (logically closed,
    // still on screen, still eating keys) cannot be represented when there is nothing to leave
    // mapped — but the union costs nothing and is the honest question to ask.
    return m_sketch_tool.inline_busy()
           || (m_inline_editor && m_inline_editor->is_open());
}

bool DesignCanvas::inline_has_focus() const
{
    return m_inline_editor && m_inline_editor->has_focus();
}

bool DesignCanvas::inline_type_char(int key)
{
    return m_inline_editor && m_inline_editor->type_char(key);
}

void DesignCanvas::inline_commit()
{
    if (m_inline_editor) m_inline_editor->commit();
}

void DesignCanvas::inline_cancel()
{
    if (m_inline_editor) m_inline_editor->cancel();
}

void DesignCanvas::request_sketch_exit()
{
    m_sketch_tool.request_exit();
    request_repaint();
}

bool DesignCanvas::live_sketch_has_work() const
{
    return m_sketch_tool.live_sketch_has_work();
}

bool DesignCanvas::undo_last_sketch_entity()
{
    const bool did = m_sketch_tool.undo_last_entity();
    if (did) request_repaint();
    return did;
}

bool DesignCanvas::delete_selected_or_last_sketch_entity()
{
    const bool did = m_sketch_tool.delete_selected_or_last();
    if (did) request_repaint();
    return did;
}

void DesignCanvas::clear_sketch_selection()
{
    m_sketch_tool.clear_selection();
    request_repaint();
}

DesignSketchTool::DimType DesignCanvas::sketch_dimension_kind() const
{
    return m_sketch_tool.dimension_kind();
}

double DesignCanvas::sketch_dimension_current() const
{
    return m_sketch_tool.dimension_current();
}

void DesignCanvas::apply_sketch_dimension(double v)
{
    m_sketch_tool.apply_dimension(v);
    request_repaint();
}

void DesignCanvas::open_inline_value(double current, std::function<void(double)> commit,
                                     std::function<void()> cancel)
{
    if (!m_inline_editor || !m_canvas_widget) { if (cancel) cancel(); return; }
    // Host-driven value entry (committed-feature Constrain path): the trigger is a toolbar
    // button. Anchor the field OVER the picked geometry (same as the draw-then-edit tools) when
    // the tool can project it; else fall back to the middle of the canvas, where the sketch is
    // in view. Everything here is canvas DEVICE px, the space the field is drawn in.
    const wxSize  cs = m_canvas_widget->GetClientSize();
    const double  sf = m_canvas_widget->GetContentScaleFactor();
    wxPoint anchor(int(cs.GetWidth() * sf) / 2, int(cs.GetHeight() * sf) / 2);
    m_sketch_tool.constrain_value_anchor(anchor);          // device px in the canvas viewport
    m_sketch_tool.set_inline_busy(true);
    m_canvas_widget->SetFocus();   // same reason as the draw-then-edit path: ImGui reads the
                                   // canvas's key events, so the canvas must be the focused widget

    m_inline_editor->open(anchor, current, "",
        [this, commit](double v) {
            m_sketch_tool.set_inline_busy(false);
            if (commit) commit(v);
            request_repaint();
        },
        [this, cancel]() {
            m_sketch_tool.set_inline_busy(false);
            if (cancel) cancel();
            request_repaint();
        });
}

void DesignCanvas::set_on_dimension_pick_complete(std::function<void(double)> cb)
{
    m_sketch_tool.on_dimension_pick_complete = std::move(cb);
}

DesignSketchTool::DimType DesignCanvas::pending_dimension_type() const
{
    return m_sketch_tool.pending_dimension_type();
}

void DesignCanvas::set_sketch_dimension_value(double v)
{
    m_sketch_tool.set_dimension_value(v);
    request_repaint();
}

void DesignCanvas::cancel_sketch_dimension()
{
    m_sketch_tool.cancel_dimension_value();
    request_repaint();
}

void DesignCanvas::begin_constrain(const SketchProfile& prof, const SketchPlane& plane)
{
    m_sketch_tool.begin_constrain(prof, plane);
    // The overlay must appear immediately (no mouse move to trigger a repaint).
    request_repaint();
}

void DesignCanvas::begin_imported_transform(
        int feat, const std::vector<std::vector<std::vector<Vec2d>>>& base_regions,
        const SketchPlane& plane, const Vec2d& offset, double scale_x, double scale_y)
{
    m_sketch_tool.begin_imported_transform(feat, base_regions, plane, offset, scale_x, scale_y);
    request_repaint();
}

void DesignCanvas::set_on_imported_transform(std::function<void(int, Vec2d, double, double)> cb)
{
    m_sketch_tool.on_imported_transform = std::move(cb);
}

void DesignCanvas::end_constrain()
{
    // cancel() clears m_active + the picked-segment/entity indices, so the
    // constrain overlay (highlighted picks) disappears on the next render.
    m_sketch_tool.cancel();
    request_repaint();
}

bool DesignCanvas::is_constraining() const { return m_sketch_tool.is_constraining(); }

bool DesignCanvas::selected_segment(int& a, int& b) const
{
    return m_sketch_tool.selected_segment(a, b);
}

void DesignCanvas::update_constrain_profile(const std::vector<Vec2d>& pts)
{
    m_sketch_tool.set_profile_points(pts);
    request_repaint();
}

void DesignCanvas::begin_constrain_entities(const std::vector<SketchEntity>& ents,
                                            const SketchPlane& plane)
{
    m_sketch_tool.begin_constrain_entities(ents, plane);
    request_repaint();
}

bool DesignCanvas::is_constraining_entities() const
{
    return m_sketch_tool.is_constraining_entities();
}

int DesignCanvas::sketch_selection_count() const
{
    return int(m_sketch_tool.selection().size());
}

bool DesignCanvas::view_normal_to_sketch()
{
    if (m_canvas == nullptr) return false;
    const SketchPlane& pl = m_sketch_tool.plane();
    Camera& cam = wxGetApp().plater()->get_camera();
    // Keep the distance: this is an orientation change, not a zoom. The plane's own y axis is
    // the up vector, so "up" on screen is up in sketch coordinates — which is what makes a
    // dimension typed after pressing N land where the eye expects it.
    const double dist = cam.get_distance();
    cam.look_at(pl.origin + pl.normal * dist, pl.origin, pl.y_axis);
    request_repaint();
    return true;
}

bool DesignCanvas::sketch_abort_gesture()
{
    if (!m_sketch_tool.abort_gesture()) return false;
    request_repaint();     // the rubber band is gone; the canvas must stop drawing it
    return true;
}

bool DesignCanvas::sketch_disarm_tool()
{
    if (!m_sketch_tool.disarm_tool()) return false;
    request_repaint();
    return true;
}

bool DesignCanvas::drawing_in_progress() const
{
    return m_sketch_tool.pending_points() > 0;
}

bool DesignCanvas::has_any_selection() const
{
    return m_sketch_tool.has_solid_selection() || m_sketch_tool.sketch_has_selection();
}

bool DesignCanvas::clear_any_selection()
{
    if (!has_any_selection()) return false;
    // Both, unconditionally: which of the two is live depends on the mode, and Esc at idle means
    // "nothing is picked" in either of them. clear_selection() reports through the tool's own
    // on_selection_changed; the solid side has no such notification, so the panel refreshes what
    // depends on it (see DesignPanel::escape).
    m_sketch_tool.clear_selection();
    m_sketch_tool.clear_solid_selection();
    // clear_solid_selection() is silent by design (recomputes call it while ids are invalid), but
    // the panel mirrors the pick to aim Extrude and the dress-up tools. An Esc that cleared the
    // highlight without telling the panel would leave those aimed at a body nothing points to.
    if (m_sketch_tool.on_solid_selection_changed)
        m_sketch_tool.on_solid_selection_changed(0, -1, -1, -1);
    request_repaint();
    return true;
}

bool DesignCanvas::sketch_first_selected_type(SketchEntity::Type& out) const
{
    return m_sketch_tool.first_selected_type(out);
}

const std::vector<int>& DesignCanvas::sketch_selection() const
{
    return m_sketch_tool.selection();
}

const std::vector<SketchEntity>& DesignCanvas::sketch_entities() const
{
    return m_sketch_tool.entities();
}

int DesignCanvas::sketch_constraint_count() const
{
    return int(m_sketch_tool.constraints().size());
}

const std::vector<SketchEntityConstraintDef>& DesignCanvas::sketch_constraints() const
{
    return m_sketch_tool.constraints();
}

bool DesignCanvas::remove_sketch_constraint(int idx)
{
    const bool removed = m_sketch_tool.remove_constraint(idx);
    if (removed) request_repaint();
    return removed;
}

void DesignCanvas::set_on_sketch_constraints_changed(std::function<void()> cb)
{
    m_sketch_tool.on_constraints_changed = std::move(cb);
}

bool DesignCanvas::try_add_sketch_constraints(const std::vector<SketchEntityConstraintDef>& defs)
{
    return m_sketch_tool.try_add_constraints(defs);
}

bool DesignCanvas::selected_constrain_entities(int& e0, int& e1) const
{
    return m_sketch_tool.selected_constrain_entities(e0, e1);
}

int DesignCanvas::selected_constrain_axis() const
{
    return m_sketch_tool.pick2();
}

bool DesignCanvas::pick0_point(Vec2d& out) const
{
    return m_sketch_tool.pick0_point(out);
}

void DesignCanvas::update_constrain_entities(const std::vector<SketchEntity>& ents)
{
    m_sketch_tool.set_constrain_entities(ents);
    request_repaint();
}

void DesignCanvas::set_constraint_highlight(std::vector<int> entities)
{
    m_sketch_tool.set_constraint_highlight(std::move(entities));
    request_repaint();
}

void DesignCanvas::set_constraint_glyphs(std::vector<SketchEntityConstraintDef> cons)
{
    m_sketch_tool.set_constraint_glyphs(std::move(cons));
    request_repaint();
}

}} // namespace Slic3r::GUI