Commit 9bfabba0 authored by Committed by Federico Mena QuinteroBrowse files
Work around https://bugs.freedesktop.org/show_bug.cgi?id=4320, which used
2006-02-03 Federico Mena Quintero <firstname.lastname@example.org> Work around https://bugs.freedesktop.org/show_bug.cgi?id=4320, which used to be our own http://bugzilla.gnome.org/show_bug.cgi?id=314616. If one uses a pixmap for a pattern in Cairo, and sets the pattern to CAIRO_EXTEND_REPEAT; and if the destination surface is also a pixmap, Cairo does a slow copy instead of using XCopyArea(). So, we use the same code that we used in GTK+ 2.6 (pre-cairo), by filling the double-buffer pixmap with a tiled GC and XFillRectangle(). * gdk/gdkwindow.c (BackingRectMethod): New structure with a cairo_t and a GdkGC field. Depending on which of these fields gets filled in, we'll use Cairo or GDK to clear the double-buffer pixmap when painting a window. (setup_backing_rect_method): Fill a BackingRectMethod as appropriate, depending on the window's configuration and our knowledge of whether Cairo is fast or slow when doing repeating patterns. (gdk_window_clear_backing_rect): Call setup_backing_rect_method(). Depending on what it returns, use Cairo to clear the double-buffer pixmap, or plain GDK.