Add gdk_drawable_set_cairo_target().

[~andy/gtk] / gdk / gdkwindow.c

diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 41e5e2ab97cc796918868134b83c2402102b1c4e..4a27988c6718ae470925a410434af7fb1bf6eabc 100644 (file)
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -157,6 +157,9 @@ static GdkImage* gdk_window_copy_to_image (GdkDrawable *drawable,
                                           gint         width,
                                           gint         height);
 
+static void gdk_window_set_cairo_target (GdkDrawable *drawable,
+                                        cairo_t     *cr);
+
 static void   gdk_window_real_get_size  (GdkDrawable     *drawable,
                                          gint            *width,
                                          gint            *height);
@@ -263,6 +266,7 @@ gdk_window_class_init (GdkWindowObjectClass *klass)
   drawable_class->get_colormap = gdk_window_real_get_colormap;
   drawable_class->get_visual = gdk_window_real_get_visual;
   drawable_class->_copy_to_image = gdk_window_copy_to_image;
+  drawable_class->set_cairo_target = gdk_window_set_cairo_target;
   drawable_class->get_clip_region = gdk_window_get_clip_region;
   drawable_class->get_visible_region = gdk_window_get_visible_region;
   drawable_class->get_composite_drawable = gdk_window_get_composite_drawable;
@@ -2091,6 +2095,26 @@ gdk_window_copy_to_image (GdkDrawable     *drawable,
                                     width, height);
 }
 
+static void
+gdk_window_set_cairo_target (GdkDrawable *drawable,
+                            cairo_t     *cr)
+{
+  GdkWindowObject *private = (GdkWindowObject*) drawable;
+  gint x_offset, y_offset;
+  
+  gdk_window_get_offsets (GDK_WINDOW (drawable), &x_offset, &y_offset);
+
+  if (private->paint_stack)
+    {
+      GdkWindowPaint *paint = private->paint_stack->data;
+      gdk_drawable_set_cairo_target (paint->pixmap, cr);
+    }
+  else
+    gdk_drawable_set_cairo_target (private->impl, cr);
+
+  cairo_translate (cr, - x_offset, - y_offset);
+}
+
 /* Code for dirty-region queueing
  */
 static GSList *update_windows = NULL;