2003-11-11  Sven Neumann  <sven@gimp.org>

	* app/display/gimpcanvas.[ch]: added gimp_canvas_set_clip_region().

	* app/display/gimpdisplayshell-callbacks.c
	(gimp_display_shell_canvas_expose): if gimp_display_shell_pause()
	would cause a redraw, make sure that no XOR drawing happens on
	areas that have already been cleared by the windowing system.
	Fixes bug #115712.