gimp/app/core/gimpdrawable-invert.c
Michael Natterer cb48cef8be added gimp_drawable_mask_intersect() which returns the same bounding box
2004-10-20  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpdrawable.[ch]: added gimp_drawable_mask_intersect()
	which returns the same bounding box as gimp_drawable_mask_bounds(),
	but returns TRUE only if there is a non-empty intersection between
	the drawable and the selection, or no selection at all. It also
	returns the intersection as x,y,width,height instead of the
	eeky x1,y1,x2,y2.

	* app/core/gimp-edit.c
	* app/core/gimpdrawable-blend.c
	* app/core/gimpdrawable-bucket-fill.c
	* app/core/gimpdrawable-desaturate.c
	* app/core/gimpdrawable-equalize.c
	* app/core/gimpdrawable-histogram.c
	* app/core/gimpdrawable-invert.c
	* app/core/gimpdrawable-stroke.c
	* app/core/gimpimagemap.c
	* app/core/gimpselection.c
	* tools/pdbgen/pdb/color.pdb
	* tools/pdbgen/pdb/transform_tools.pdb: either switch from
	gimp_drawable_mask_bounds() to _intersect() or check the return
	values of _mask_bounds() manually to avoid operations on empty
	areas. Return successfully because it's a nop, not a failure.
	Fixes bug #155733 for the core.

	* app/pdb/color_cmds.c
	* app/pdb/transform_tools_cmds.c: regenerated.
2004-10-19 22:52:04 +00:00

62 lines
1.8 KiB
C

/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <glib-object.h>
#include "core-types.h"
#include "base/gimplut.h"
#include "base/lut-funcs.h"
#include "base/pixel-processor.h"
#include "base/pixel-region.h"
#include "gimpdrawable.h"
#include "gimpdrawable-invert.h"
#include "gimp-intl.h"
void
gimp_drawable_invert (GimpDrawable *drawable)
{
PixelRegion srcPR, destPR;
gint x, y, width, height;
GimpLut *lut;
if (! gimp_drawable_mask_intersect (drawable, &x, &y, &width, &height))
return;
lut = invert_lut_new (gimp_drawable_bytes (drawable));
pixel_region_init (&srcPR, gimp_drawable_data (drawable),
x, y, width, height, FALSE);
pixel_region_init (&destPR, gimp_drawable_shadow (drawable),
x, y, width, height, TRUE);
pixel_regions_process_parallel ((p_func)gimp_lut_process, lut,
2, &srcPR, &destPR);
gimp_lut_free (lut);
gimp_drawable_merge_shadow (drawable, TRUE, _("Invert"));
gimp_drawable_update (drawable, x, y, width, height);
}