2004-06-23  Michael Natterer  <mitch@gimp.org>

	* app/paint/gimpbrushcore.[ch]: added signal "set-brush" which is
	G_SIGNAL_RUN_LAST so we can connect before and after the default
	implementation. Moved the brush setting and outline invalidation
	stuff to its default implementation. Also remember the outline's
	width and height. Call gimp_brush_core_set_brush() from
	gimp_brush_core_invalidate_cache() so "set-brush" is emitted
	whenever a generated brush becomes dirty.

	* app/tools/gimppainttool.c (gimp_paint_tool_button_press): don't
	pause/resume but rather stop/start the draw_tool. Fixes straight
	line preview aretefacts.

	(gimp_paint_tool_oper_update): set the brush_core's brush before
	starting the draw_tool.

	(gimp_paint_tool_draw): never free the brush_core's cached brush
	outline because the brush_core does that by itself now.

	(gimp_paint_tool_set_brush)
	(gimp_paint_tool_set_brush_after): new callbacks which pause and
	resume the draw_tool. Fixes brush outline artefacts when modifying
	the current brush e.g. by using the mouse wheel.