2003-02-21  Michael Natterer  <mitch@gimp.org>

	Refactored the GimpDisplayShell update/draw code:

	* app/display/gimpdisplayshell.[ch]: removed the display_areas
	list which used to hold the GimpAreas to update. Instead, simply
	queue draws using gtk_widget_queue_draw[_area]() in
	gimp_display_shell_expose_area(), _expose_full() and
	_expose_guide(). Made all _draw() functions public because they
	are now called from the "expose_event" handler.  Removed rendering
	from gimp_display_shell_flush() because stuff is now flushed
	automatically by the gtk idle renderer.

	* app/display/gimpdisplayshell-callbacks.c
	(gimp_display_shell_canvas_expose): draw everything here (the code
	removed from gimp_display_shell_flush() without the GimpArea list).
	(gimp_display_shell_canvas_tool_events): return "return_val", not
	TRUE if gimp->busy is TRUE. Fixes unupdated (windowk bg color)
	display areas. Fixes bug #106595.

	* app/display/gimpdisplay.c
	* app/display/gimpdisplayshell-cursor.c
	* app/display/gimpdisplayshell-filter-dialog.c
	* app/display/gimpdisplayshell-handlers.c
	* app/display/gimpdisplayshell-selection.c
	* app/gui/view-commands.c: changed accordingly. Removed calls to
	gimp_display_shell_flush() all over the place.

	* app/display/gimpdisplayshell-scroll.c: replaced lots of code by
	a single call to gdk_window_scroll().