76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "core-types.h"
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#include "pikadrawable.h"
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#include "pikadrawable-equalize.h"
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#include "pikadrawable-histogram.h"
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#include "pikadrawable-operation.h"
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#include "pikahistogram.h"
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#include "pikaimage.h"
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#include "pikaselection.h"
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#include "pika-intl.h"
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void
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pika_drawable_equalize (PikaDrawable *drawable,
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gboolean mask_only)
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{
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PikaImage *image;
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PikaChannel *selection;
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PikaHistogram *histogram;
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GeglNode *equalize;
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g_return_if_fail (PIKA_IS_DRAWABLE (drawable));
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g_return_if_fail (pika_item_is_attached (PIKA_ITEM (drawable)));
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image = pika_item_get_image (PIKA_ITEM (drawable));
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selection = pika_image_get_mask (image);
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histogram = pika_histogram_new (FALSE);
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pika_drawable_calculate_histogram (drawable, histogram, FALSE);
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equalize = gegl_node_new_child (NULL,
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"operation", "pika:equalize",
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"histogram", histogram,
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NULL);
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if (! mask_only)
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pika_selection_suspend (PIKA_SELECTION (selection));
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pika_drawable_apply_operation (drawable, NULL,
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C_("undo-type", "Equalize"),
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equalize);
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if (! mask_only)
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pika_selection_resume (PIKA_SELECTION (selection));
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g_object_unref (equalize);
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g_object_unref (histogram);
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}
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