Patch from Tomi Leppikangas <tomilepp@rak046.oulu.fi>.

Properly set the fonts of native widgets.

widget/src/gtk/nsButton.cpp

@@ -132,3 +132,23 @@ NS_METHOD nsButton::GetLabel(nsString& aBuffer)
   return (NS_OK);
 
 }
+
+//-------------------------------------------------------------------------
+//
+// set font for button
+//
+//-------------------------------------------------------------------------
+/* virtual */
+void nsButton::SetFontNative(GdkFont *aFont)
+{
+  GtkStyle *style = gtk_style_copy(GTK_BIN (mWidget)->child->style);
+  // gtk_style_copy ups the ref count of the font
+  gdk_font_unref (style->font);
+  
+  style->font = aFont;
+  gdk_font_ref(style->font);
+  
+  gtk_widget_set_style(GTK_BIN (mWidget)->child, style);
+  
+  gtk_style_unref(style);
+}

widget/src/gtk/nsButton.h

@@ -46,6 +46,8 @@ public:
   virtual PRBool OnPaint(nsPaintEvent & aEvent) { return PR_FALSE; }
   virtual PRBool OnResize(nsRect &aRect) { return PR_FALSE; }
 
+  virtual void SetFontNative(GdkFont *aFont);
+
 
 protected:
   NS_METHOD CreateNative(GtkWidget *parentWindow);

widget/src/gtk/nsComboBox.cpp

@@ -352,3 +352,23 @@ nsComboBox::OnUnmapSignal(GtkWidget * aWidget)
   InitEvent(event, NS_CONTROL_CHANGE, &point);
   DispatchWindowEvent(&event);
 }
+
+//-------------------------------------------------------------------------
+//
+// Get handle for style
+//
+//-------------------------------------------------------------------------
+/*virtual*/
+void nsComboBox::SetFontNative(GdkFont *aFont)
+{
+  GtkStyle *style = gtk_style_copy(GTK_WIDGET (g_list_nth_data(gtk_container_children(GTK_CONTAINER (mWidget)),0))->style);
+  // gtk_style_copy ups the ref count of the font
+  gdk_font_unref (style->font);
+  
+  style->font = aFont;
+  gdk_font_ref(style->font);
+  
+  gtk_widget_set_style(GTK_BIN (mWidget)->child, style);
+  
+  gtk_style_unref(style);
+}

widget/src/gtk/nsComboBox.h

@@ -59,6 +59,8 @@ public:
   PRInt32         GetSelectedCount();
   NS_IMETHOD      GetSelectedIndices(PRInt32 aIndices[], PRInt32 aSize);
 
+  virtual void SetFontNative(GdkFont *aFont);
+
 protected:
   NS_IMETHOD  CreateNative(GtkWidget *parentWindow);
   virtual void InitCallbacks(char * aName = nsnull);

widget/src/gtk/nsListBox.cpp

@@ -393,3 +393,23 @@ nsListBox::OnDestroySignal(GtkWidget* aGtkWidget)
     nsWidget::OnDestroySignal(aGtkWidget);
   }
 }
+
+//-------------------------------------------------------------------------
+//
+// set font for listbox
+//
+//-------------------------------------------------------------------------
+/*virtual*/
+void nsListBox::SetFontNative(GdkFont *aFont)
+{
+  GtkStyle *style = gtk_style_copy(GTK_WIDGET (g_list_nth_data(gtk_container_children(GTK_CONTAINER (mWidget)),0))->style);
+  // gtk_style_copy ups the ref count of the font
+  gdk_font_unref (style->font);
+  
+  style->font = aFont;
+  gdk_font_ref(style->font);
+  
+  gtk_widget_set_style(GTK_WIDGET (g_list_nth_data(gtk_container_children(GTK_CONTAINER (mWidget)),0)), style);
+  
+  gtk_style_unref(style);
+}

widget/src/gtk/nsListBox.h

@@ -59,6 +59,8 @@ public:
   NS_IMETHOD SelectItem(PRInt32 aPosition);
   NS_IMETHOD Deselect() ;
 
+  virtual void SetFontNative(GdkFont *aFont);
+
 protected:
   NS_IMETHOD CreateNative(GtkWidget *parentWindow);
   virtual void InitCallbacks(char * aName = nsnull);

widget/src/gtk/nsWidget.cpp

@@ -434,22 +434,8 @@ NS_METHOD nsWidget::SetFont(const nsFont &aFont)
             return NS_ERROR_FAILURE;
         }
 
-        if (mWidget) {
-            gtk_widget_ensure_style(mWidget);
-
-            GtkStyle *style = gtk_style_copy(mWidget->style);
-            // gtk_style_copy ups the ref count of the font
-            gdk_font_unref (style->font);
-
-            GdkFont *font = (GdkFont *)fontHandle;
-            style->font = font;
-            gdk_font_ref(style->font);
-
-            gtk_widget_set_style(mWidget, style);
-
-            gtk_style_unref(style);
-        }
-
+        if (mWidget) 
+          SetFontNative((GdkFont *)fontHandle);
     }
     NS_RELEASE(mFontMetrics);
     return NS_OK;
@@ -1807,3 +1793,21 @@ nsWidget::GetWindowForSetBackground()
 
   return gdk_window;
 }
+
+
+//////////////////////////////////////////////////////////////////////
+// default setfont for most widgets
+/*virtual*/
+void nsWidget::SetFontNative(GdkFont *aFont)
+{
+  GtkStyle *style = gtk_style_copy(mWidget->style);
+  // gtk_style_copy ups the ref count of the font
+  gdk_font_unref (style->font);
+  
+  style->font = aFont;
+  gdk_font_ref(style->font);
+  
+  gtk_widget_set_style(mWidget, style);
+  
+  gtk_style_unref(style);
+}

widget/src/gtk/nsWidget.h

@@ -154,6 +154,9 @@ class nsWidget : public nsBaseWidget
   // Return the Gdk window whose background should change
   virtual GdkWindow * GetWindowForSetBackground();
 
+  // Sets font for widgets
+  virtual void SetFontNative(GdkFont *aFont);
+
   //////////////////////////////////////////////////////////////////
   //
   // GTK signal installers