CtrlCore: Fixed scaling of DnD drag icon

git-svn-id: svn://ultimatepp.org/upp/trunk@13894 f0d560ea-af0d-0410-9eb7-867de7ffcac7

uppsrc/CtrlCore/CtrlCore.h

@@ -1220,7 +1220,7 @@ public:
 	static Ctrl *GetDragAndDropTarget();
 	bool   IsDragAndDropSource()    { return this == GetDragAndDropSource(); }
 	bool   IsDragAndDropTarget()    { return this == GetDragAndDropTarget(); }
-	static Size  StdSampleSize()    { return Size(126, 106); }
+	static Size  StdSampleSize()    { return Size(DPI(126), DPI(106)); }
 
 public:
 	static void SetSkin(void (*skin)());

uppsrc/CtrlCore/GtkDnD.cpp

@@ -19,13 +19,19 @@ Ctrl *Ctrl::GetDragAndDropSource()
 	return dnd_source;
 }
 
+cairo_surface_t *CreateCairoSurface(const Image& img);
+
 void Ctrl::GtkDragBegin(GtkWidget *widget, GdkDragContext *context, gpointer user_data)
 {
 	if(IsNull(dnd_icon))
 		gtk_drag_set_icon_default(context);
 	else {
-		ImageGdk m(dnd_icon);
-		gtk_drag_set_icon_pixbuf(context, m, 0, 0);
+		cairo_surface_t *surface = CreateCairoSurface(dnd_icon);
+		double scale = SCL(1);
+		cairo_surface_set_device_scale(surface, scale, scale);
+		cairo_surface_set_device_offset(surface, DPI(8), DPI(8));
+		gtk_drag_set_icon_surface(context, surface);
+		cairo_surface_destroy(surface);
 	}
 	LLOG("GtkDragBegin");
 }

uppsrc/CtrlCore/gtk3-todo.txt

@@ -6,7 +6,6 @@
 - Disabled empty combobox (FileSel::SelectDir) does not look nice
 - ide menu in X11 ch
 - TrayIconGtk warnings
-- DnD Sample size UHD
 
 NTH:
 - spinbutton cosmetics
@@ -70,3 +69,4 @@ DONE:
 - OpenGL
 - GtkWnd warnings
 - GtkDnD warnings
+- DnD Sample size UHD