2003-05-18 Michael Natterer <mitch@gimp.org>
Implemented "Flip Image". Fixes bug #23179:
* app/core/core-enums.[ch]: added GIMP_UNDO_GROUP_IMAGE_FLIP.
* app/core/Makefile.am
* app/core/gimpimage-flip.[ch]: new files implementing
gimp_image_flip().
* app/gui/image-menu.c
* app/gui/image-commands.[ch]: added it to the "Image" menu.
* themes/Default/images/Makefile.am
* themes/Default/images/stock-flip-horizontal-16.png
* themes/Default/images/stock-flip-vertical-16.png
* libgimpwidgets/gimpstock.[ch]: added icons for the new
menu items.
Bugs found while hacking the stuff above:
* app/core/gimpdrawable-transform.c (gimp_drawable_transform_paste):
only call gimp_layer_add_alpha() if the pasted tiles have alpha.
* app/core/gimpimage-undo-push.c (undo_pop_channel_mod): fixed to
do the right thing if the channel is the selection mask.
