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Make sure Fill uses undo (but also intelligently)

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"Fill", as a new main-toolbar tool, was not recording snapshots
of the image for the "Undo" tool.  Mended.

However, also updated the tool so that it doesn't _bother_ recording
into the undo buffer if the fill action is a no-op (e.g., clicking
the same spot a second time, or otherwise attempting to fill an
area with a color that's identical to what's already on the canvas).
This commit is contained in:
Bill Kendrick 2019-09-14 11:16:46 -07:00
parent 8f9ea4cb69
commit a54dd570b4
4 changed files with 42 additions and 17 deletions
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src/fill.h
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@ -27,11 +27,12 @@
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
(See COPYING.txt)
Last updated: September 12, 2019
Last updated: September 14, 2019
$Id$
*/
#include "SDL.h"
int would_flood_fill(SDL_Surface * canvas, int x, int y, Uint32 cur_colr, Uint32 old_colr);
void do_flood_fill(SDL_Surface * canvas, int x, int y, Uint32 cur_colr, Uint32 old_colr, int * x1, int * y1, int * x2, int * y2);