Fix Windows paint on resize issue. Automatically resize to fit tabs and button content

src/slic3r/GUI/PublishSettingsDialog.cpp

@@ -17,6 +17,7 @@
 #include "libslic3r/PublishSettings.hpp"
 
 #include <boost/algorithm/string/trim.hpp>
+#include <wx/display.h>
 #include <set>
 #include <algorithm>
 
@@ -97,7 +98,7 @@ PublishSettingsDialog::PublishSettingsDialog(wxWindow* parent)
                 _L("Publish 3MF..."),
                 wxDefaultPosition,
                 wxDefaultSize,
-                wxCAPTION | wxCLOSE_BOX | wxRESIZE_BORDER)
+                wxCAPTION | wxCLOSE_BOX | wxRESIZE_BORDER | wxFULL_REPAINT_ON_RESIZE)
     , m_search(this, "search", 16)
     , m_menu(this, "filter", 16)
 {
@@ -193,11 +194,42 @@ PublishSettingsDialog::PublishSettingsDialog(wxWindow* parent)
     w_sizer->Add(dlg_btns, 0, wxEXPAND);
 
     SetSizerAndFit(w_sizer);
-    SetMinSize(FromDIP(wxSize(600, 500)));
+    fit_to_content(); // initial size only; the dialog is resizable
-    SetSize(FromDIP(wxSize(600, 500))); // initial size only; the dialog is resizable
     wxGetApp().UpdateDlgDarkUI(this);
 }
 
+// Size the window to its content: width follows the widest tab strip so no filament tab is
+// hidden (TabCtrl::relayout hides overflowing buttons), height scales proportionally. Both
+// are floored at the 600x500 base and capped at hard DIP limits - deliberately not the whole
+// display - with one last-resort clamp so the dialog can never open larger than the screen.
+// Also owns the resize floor: the window cannot be resized below what the tabs need, so
+// shrinking never re-hides a filament tab.
+void PublishSettingsDialog::fit_to_content()
+{
+    static const wxSize BASE{600, 500};
+    static const wxSize CAP{1300, 850};
+
+    int strip = m_outer_tabs->buttons_best_width();
+    for (const SectionGroup& section : m_sections)
+        strip = std::max(strip, section.tabs->buttons_best_width());
+
+    // Minimum width: whatever keeps every tab visible (never below the base). strip is device
+    // pixels (Button min sizes); BASE/CAP are DIP and converted over.
+    const int min_w = std::max(strip + 2 * FromDIP(10), FromDIP(BASE.x));
+
+    // Initial size: prefer proportional growth within the caps.
+    const int w    = std::clamp(min_w, FromDIP(BASE.x), FromDIP(CAP.x));
+    const double f = double(w) / FromDIP(BASE.x);
+    const int h    = std::clamp(int(FromDIP(BASE.y) * f), FromDIP(BASE.y), FromDIP(CAP.y));
+
+    const wxRect area = wxDisplay(this).GetClientArea();
+    const int max_w   = area.width * 9 / 10;
+    const int max_h   = area.height * 9 / 10;
+
+    SetMinSize(wxSize(std::min(min_w, max_w), std::min(FromDIP(BASE.y), max_h)));
+    SetSize(std::min(w, max_w), std::min(h, max_h));
+}
+
 PublishSettingsDialog::~PublishSettingsDialog() {}
 
 void PublishSettingsDialog::build_option_model()
@@ -1059,7 +1091,7 @@ void PublishSettingsDialog::on_dpi_changed(const wxRect& suggested_rect)
         }
     }
 
-    SetMinSize(FromDIP(wxSize(600, 500)));
+    fit_to_content(); // tab buttons' min widths grew with the DPI: re-fit (incl. resize floor)
     Refresh();
 }
 

src/slic3r/GUI/PublishSettingsDialog.hpp

@@ -48,6 +48,8 @@ protected:
     void on_dpi_changed(const wxRect& suggested_rect) override;
 
 private:
+    void fit_to_content();
+
     // Which part of the settings the row/category came from.
     enum class Section { Print, Printer, Material };
 

src/slic3r/GUI/Widgets/StaticBox.cpp

@@ -7,6 +7,7 @@ BEGIN_EVENT_TABLE(StaticBox, wxWindow)
 
 // catch paint events
 //EVT_ERASE_BACKGROUND(StaticBox::eraseEvent)
+EVT_SIZE(StaticBox::sizeEvent)
 EVT_PAINT(StaticBox::paintEvent)
 
 END_EVENT_TABLE()
@@ -140,6 +141,12 @@ void StaticBox::eraseEvent(wxEraseEvent& evt)
 #endif
 }
 
+void StaticBox::sizeEvent(wxSizeEvent& evt)
+{
+    Refresh();
+    evt.Skip();
+}
+
 void StaticBox::paintEvent(wxPaintEvent& evt)
 {
     // depending on your system you may need to look at double-buffered dcs

src/slic3r/GUI/Widgets/StaticBox.hpp

@@ -46,6 +46,8 @@ public:
 protected:
     void eraseEvent(wxEraseEvent& evt);
 
+    void sizeEvent(wxSizeEvent& evt);
+
     void paintEvent(wxPaintEvent& evt);
 
     void render(wxDC& dc);

src/slic3r/GUI/Widgets/TabCtrl.cpp

@@ -295,6 +295,15 @@ void TabCtrl::relayout()
     Layout();
 }
 
+int TabCtrl::buttons_best_width() const
+{
+    // Mirrors relayout(): a 10px leading spacer plus every button's min width and spacing.
+    int width = 10;
+    for (const Button *btn : btns)
+        width += btn->GetMinSize().x + TAB_BUTTON_SPACE * 2;
+    return width;
+}
+
 void TabCtrl::buttonClicked(wxCommandEvent &event)
 {
     SetFocus();

src/slic3r/GUI/Widgets/TabCtrl.hpp

@@ -73,6 +73,8 @@ private:
 
     void relayout();
 
+    int buttons_best_width() const;
+
     void buttonClicked(wxCommandEvent & event);
     void keyDown(wxKeyEvent &event);