gdk: add gdk_window_create_similar_image_surface

This lets us create image surfaces that render faster on specific windows.
It also supports creating scaled image surfaces.

1 files changed, 7 insertions, 0 deletions

diff --git a/gdk/gdkwindow.h b/gdk/gdkwindow.h
index 7840c6e096..0c394d8c4d 100644
--- a/gdk/gdkwindow.h
+++ b/gdk/gdkwindow.h
@@ -911,6 +911,13 @@ cairo_surface_t *
                                           cairo_content_t  content,
                                           int              width,
                                           int              height);
+GDK_AVAILABLE_IN_3_10
+cairo_surface_t *
+              gdk_window_create_similar_image_surface (GdkWindow *window,
+						       cairo_format_t format,
+						       int            width,
+						       int            height,
+						       int            scale);
 
 GDK_AVAILABLE_IN_ALL
 void          gdk_window_beep            (GdkWindow       *window);