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/* GIMP - The GNU 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 3 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, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "core-types.h"
#include "gimpdrawable.h"
#include "gimpdrawable-equalize.h"
#include "gimpdrawable-histogram.h"
#include "gimpdrawable-operation.h"
#include "gimphistogram.h"
#include "gimpimage.h"
#include "gimpselection.h"
#include "gimp-intl.h"
void
gimp_drawable_equalize (GimpDrawable *drawable,
gboolean mask_only)
{
GimpImage *image;
GimpChannel *selection;
GimpHistogram *histogram;
GeglNode *equalize;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
image = gimp_item_get_image (GIMP_ITEM (drawable));
selection = gimp_image_get_mask (image);
histogram = gimp_histogram_new (GIMP_TRC_NON_LINEAR);
gimp_drawable_calculate_histogram (drawable, histogram, FALSE);
equalize = gegl_node_new_child (NULL,
"operation", "gimp:equalize",
"histogram", histogram,
NULL);
if (! mask_only)
gimp_selection_suspend (GIMP_SELECTION (selection));
gimp_drawable_apply_operation (drawable, NULL,
C_("undo-type", "Equalize"),
equalize);
if (! mask_only)
gimp_selection_resume (GIMP_SELECTION (selection));
g_object_unref (equalize);
g_object_unref (histogram);
}
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