2003-05-13  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpitem.[ch]: added "gboolean clip_result" to
	GimpItem::flip().

	* app/vectors/gimpvectors.c
	* app/tools/gimpfliptool.c: changed accordingly.

	* app/core/gimpdrawable.c: implement GimpItem::flip() and
	GimpItem::transform().

	* app/core/gimpchannel.c
	* app/core/gimplayer.c: chain up in flip() and transform() and do
	only the layer/channel specific stuff here.

	* app/core/gimpdrawable-transform.[ch]: fixed indentation.
	(gimp_drawable_transform_tiles_flip): added "gboolean clip_result"
	and warn that it is not yet implemented.
	(gimp_drawable_transform_tiles_affine): when transforming a
	channel set bg_color to transparent. Clip channels (but not layer
	masks) only if the passed tiles have bpp == 1 (the channel is
	unfloated).
	(gimp_drawable_transform_affine): clip all unfloated channels.

	* app/core/gimpitem-linked.[ch]: added gimp_item_linked_get_list()
	utility function to avoind iterating all layers/channels/vectors
	in all functions.

	* app/tools/gimptransformtool.c: clip all unfloated channels.

	The clipping fixes above together fix bug #112858.