WIP (NewUI with fonts): Next improvements for fonts.

* Fixed new font applying for TreeCtrl and DataViewCtrl
* Fixed update of the em_unit in respect to the new font size
+ MSW specific: Fixed re-scaling of the non-standard buttons

src/slic3r/GUI/ExtraRenderers.cpp

@@ -154,7 +154,14 @@ bool BitmapTextRenderer::Render(wxRect rect, wxDC *dc, int state)
         // workaround for Windows DarkMode : Don't respect to the state & wxDATAVIEW_CELL_SELECTED to avoid update of the text color
         RenderText(m_value.GetText(), xoffset, rect, dc, state & wxDATAVIEW_CELL_SELECTED ? 0 :state);
 #else
+    {
+        wxDataViewCtrl* const view = GetView();
+        if (GetAttr().HasFont())
+            dc->SetFont(GetAttr().GetEffectiveFont(view->GetFont()));
+        else
+            dc->SetFont(view->GetFont());
         RenderText(m_value.GetText(), xoffset, rect, dc, state);
+    }
 #endif
 
     return true;
@@ -165,22 +172,22 @@ wxSize BitmapTextRenderer::GetSize() const
     if (!m_value.GetText().empty())
     {
         wxSize size;
+        wxDataViewCtrl* const view = GetView();
+        wxClientDC dc(view);
+        if (GetAttr().HasFont())
+            dc.SetFont(GetAttr().GetEffectiveFont(view->GetFont()));
+        else
+            dc.SetFont(view->GetFont());
+
 #if defined(SUPPORTS_MARKUP) && defined(wxHAS_GENERIC_DATAVIEWCTRL)
         if (m_markupText)
-        {
-            wxDataViewCtrl* const view = GetView();
-            wxClientDC dc(view);
-            if (GetAttr().HasFont())
-                dc.SetFont(GetAttr().GetEffectiveFont(view->GetFont()));
-
             size = m_markupText->Measure(dc);
-
-            int lines = m_value.GetText().Freq('\n') + 1;
-            size.SetHeight(size.GetHeight() * lines);
-        }
         else
 #endif // SUPPORTS_MARKUP && wxHAS_GENERIC_DATAVIEWCTRL
-            size = GetTextExtent(m_value.GetText());
+            size = dc.GetTextExtent(m_value.GetText());
+
+        int lines = m_value.GetText().Freq('\n') + 1;
+        size.SetHeight(size.GetHeight() * lines);
 
         if (m_value.GetBitmap().IsOk())
             size.x += m_value.GetBitmap().GetWidth() + 4;

src/slic3r/GUI/GUI_Utils.hpp

@@ -94,17 +94,13 @@ public:
         m_prev_scale_factor = m_scale_factor;
 		m_normal_font = get_default_font_for_dpi(this, dpi);
 
-        if (font_point_size > 0) {
-            m_font_size = font_point_size;
+        if (font_point_size > 0)
             m_normal_font.SetPointSize(font_point_size);
-        }
 
         /* Because of default window font is a primary display font, 
          * We should set correct font for window before getting em_unit value.
          */
-#ifndef __WXOSX__ // Don't call SetFont under OSX to avoid name cutting in ObjectList 
         this->SetFont(m_normal_font);
-#endif
         this->CenterOnParent();
 #ifdef _WIN32
         update_dark_ui(this);
@@ -113,7 +109,13 @@ public:
         // 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/*m_font_size*/, int(m_scale_factor * m_font_size));
+#ifdef _WIN32
+        const double font_to_em_koef = 10./9.;// Default font point size on Windows is 9 pt
+#else // ifdef __WXOSX__
+        const double font_to_em_koef = 10./11.;// Default font point size on OSX is 11 pt
+#endif
+        m_em_unit_from_font_size = int(font_to_em_koef * m_normal_font.GetPointSize());
+        m_em_unit = std::max<int>(10, int(m_scale_factor * m_em_unit_from_font_size));
 #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);
@@ -198,7 +200,7 @@ protected:
 private:
     float m_scale_factor;
     int m_em_unit;
-    int m_font_size {10};
+    int m_em_unit_from_font_size {10};
 
     wxFont m_normal_font;
     float m_prev_scale_factor;
@@ -247,7 +249,7 @@ private:
         m_normal_font = this->GetFont();
 
         // update em_unit value for new window font
-        m_em_unit = std::max<int>(m_font_size, int(m_scale_factor * m_font_size));
+        m_em_unit = std::max<int>(10, int(m_scale_factor * m_em_unit_from_font_size));
 
         // rescale missed controls sizes and images
         on_dpi_changed(suggested_rect);

src/slic3r/GUI/MainFrame.cpp

@@ -2305,15 +2305,7 @@ SettingsDialog::SettingsDialog(MainFrame* mainframe)
     if (wxGetApp().is_gcode_viewer())
         return;
 
-#if defined(__WXMSW__)
-    // ys_FIXME! temporary workaround for correct font scaling
-    // Because of from wxWidgets 3.1.3 auto rescaling is implemented for the Fonts,
-    // From the very beginning set dialog font to the wxSYS_DEFAULT_GUI_FONT
-    this->SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
-#else
-    this->SetFont(wxGetApp().normal_font());
-//    this->SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
-#endif // __WXMSW__
+//    this->SetFont(wxGetApp().normal_font());
 
     // Load the icon either from the exe, or from the ico file.
 #if _WIN32

src/slic3r/GUI/Tab.cpp

@@ -3712,6 +3712,7 @@ void Tab::rebuild_page_tree()
             continue;
         auto itemId = m_treectrl->AppendItem(rootItem, translate_category(p->title(), m_type), p->iconID());
         m_treectrl->SetItemTextColour(itemId, p->get_item_colour());
+        m_treectrl->SetItemFont(itemId, wxGetApp().normal_font());
         if (translate_category(p->title(), m_type) == selected)
             item = itemId;
     }

src/slic3r/GUI/UnsavedChangesDialog.cpp

@@ -839,13 +839,7 @@ UnsavedChangesDialog::UnsavedChangesDialog(Preset::Type type, PresetCollection*
 
 void UnsavedChangesDialog::build(Preset::Type type, PresetCollection* dependent_presets, const std::string& new_selected_preset, const wxString& header)
 {
-#if defined(__WXMSW__)
-    // ys_FIXME! temporary workaround for correct font scaling
-    // Because of from wxWidgets 3.1.3 auto rescaling is implemented for the Fonts,
-    // From the very beginning set dialog font to the wxSYS_DEFAULT_GUI_FONT
-//    this->SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
     this->SetFont(wxGetApp().normal_font());
-#endif // __WXMSW__
 
     int border = 10;
     int em = em_unit();
@@ -1338,7 +1332,7 @@ void UnsavedChangesDialog::on_dpi_changed(const wxRect& suggested_rect)
 {
     int em = em_unit();
 
-    msw_buttons_rescale(this, em, { wxID_CANCEL, m_save_btn_id, m_move_btn_id, m_continue_btn_id });
+    msw_buttons_rescale(this, em, { wxID_CANCEL, m_save_btn_id, m_move_btn_id, m_continue_btn_id }, 1.5);
 
     const wxSize& size = wxSize(70 * em, 30 * em);
     SetMinSize(size);
@@ -1485,6 +1479,7 @@ void DiffPresetDialog::create_presets_sizer()
         auto add_preset_combobox = [collection, sizer, new_type, this](PresetComboBox** cb_, PresetBundle* preset_bundle) {
             *cb_ = new PresetComboBox(this, new_type, wxSize(em_unit() * 35, -1), preset_bundle);
             PresetComboBox*cb = (*cb_);
+            cb->SetFont(this->GetFont());
             cb->show_modif_preset_separately();
             cb->set_selection_changed_function([this, new_type, preset_bundle, cb](int selection) {
                 std::string preset_name = Preset::remove_suffix_modified(cb->GetString(selection).ToUTF8().data());
@@ -1549,6 +1544,7 @@ void DiffPresetDialog::create_info_lines()
 void DiffPresetDialog::create_tree()
 {
     m_tree = new DiffViewCtrl(this, wxSize(em_unit() * 65, em_unit() * 40));
+    m_tree->SetFont(this->GetFont());
     m_tree->AppendToggleColumn_(L"\u2714", DiffModel::colToggle, wxLinux ? 9 : 6);
     m_tree->AppendBmpTextColumn("",                      DiffModel::colIconText, 35);
     m_tree->AppendBmpTextColumn(_L("Left Preset Value"), DiffModel::colOldValue, 15);
@@ -1670,17 +1666,9 @@ void DiffPresetDialog::complete_dialog_creation()
 }
 
 DiffPresetDialog::DiffPresetDialog(MainFrame* mainframe)
-    : DPIDialog(mainframe, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER),
+    : DPIDialog(mainframe, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER, "diff_presets_dialog", mainframe->normal_font().GetPointSize()),
     m_pr_technology(wxGetApp().preset_bundle->printers.get_edited_preset().printer_technology())
 {    
-#if defined(__WXMSW__)
-    // ys_FIXME! temporary workaround for correct font scaling
-    // Because of from wxWidgets 3.1.3 auto rescaling is implemented for the Fonts,
-    // From the very beginning set dialog font to the wxSYS_DEFAULT_GUI_FONT
-//    this->SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
-    this->SetFont(mainframe->normal_font());
-#endif // __WXMSW__
-
     // Init bundles
 
     assert(wxGetApp().preset_bundle);

src/slic3r/GUI/wxExtensions.cpp

@@ -372,9 +372,9 @@ void edit_tooltip(wxString& tooltip)
 /* Function for rescale of buttons in Dialog under MSW if dpi is changed.
  * btn_ids - vector of buttons identifiers
  */
-void msw_buttons_rescale(wxDialog* dlg, const int em_unit, const std::vector<int>& btn_ids)
+void msw_buttons_rescale(wxDialog* dlg, const int em_unit, const std::vector<int>& btn_ids, double height_koef/* = 1.*/)
 {
-    const wxSize& btn_size = wxSize(-1, int(2.5f * em_unit + 0.5f));
+    const wxSize& btn_size = wxSize(-1, int(2.5 * em_unit * height_koef + 0.5f));
 
     for (int btn_id : btn_ids) {
         // There is a case [FirmwareDialog], when we have wxControl instead of wxButton

src/slic3r/GUI/wxExtensions.hpp

@@ -50,7 +50,7 @@ void enable_menu_item(wxUpdateUIEvent& evt, std::function<bool()> const cb_condi
 class wxDialog;
 
 void    edit_tooltip(wxString& tooltip);
-void    msw_buttons_rescale(wxDialog* dlg, const int em_unit, const std::vector<int>& btn_ids);
+void    msw_buttons_rescale(wxDialog* dlg, const int em_unit, const std::vector<int>& btn_ids, double height_koef = 1.);
 int     em_unit(wxWindow* win);
 int     mode_icon_px_size();