mirror of https://github.com/GNOME/gimp.git
109 lines
3.5 KiB
C
109 lines
3.5 KiB
C
/* GIMP - The GNU Image Manipulation Program
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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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <gegl.h>
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#include "core-types.h"
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#include "base/gimplut.h"
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#include "base/lut-funcs.h"
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#include "base/pixel-processor.h"
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#include "base/pixel-region.h"
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#include "gegl/gimpbrightnesscontrastconfig.h"
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/* temp */
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#include "gimp.h"
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#include "gimpimage.h"
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#include "gimpdrawable.h"
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#include "gimpdrawable-brightness-contrast.h"
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#include "gimpdrawable-operation.h"
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#include "gimp-intl.h"
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/* public functions */
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void
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gimp_drawable_brightness_contrast (GimpDrawable *drawable,
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GimpProgress *progress,
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gint brightness,
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gint contrast)
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{
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GimpBrightnessContrastConfig *config;
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g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
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g_return_if_fail (! gimp_drawable_is_indexed (drawable));
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g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
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config = g_object_new (GIMP_TYPE_BRIGHTNESS_CONTRAST_CONFIG,
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"brightness", brightness / 127.0,
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"contrast", contrast / 127.0,
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NULL);
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if (gimp_use_gegl (GIMP_ITEM (drawable)->image->gimp))
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{
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GeglNode *node;
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node = g_object_new (GEGL_TYPE_NODE,
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"operation", "brightness-contrast",
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NULL);
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gimp_brightness_contrast_config_set_node (config, node);
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gimp_drawable_apply_operation (drawable, node, TRUE,
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progress, _("Brightness_Contrast"));
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g_object_unref (node);
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}
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else
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{
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gint x, y, width, height;
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/* The application should occur only within selection bounds */
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if (gimp_drawable_mask_intersect (drawable, &x, &y, &width, &height))
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{
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GimpLut *lut;
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PixelRegion srcPR, destPR;
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lut = brightness_contrast_lut_new (config->brightness / 2.0,
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config->contrast,
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gimp_drawable_bytes (drawable));
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pixel_region_init (&srcPR, gimp_drawable_get_tiles (drawable),
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x, y, width, height, FALSE);
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pixel_region_init (&destPR, gimp_drawable_get_shadow_tiles (drawable),
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x, y, width, height, TRUE);
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pixel_regions_process_parallel ((PixelProcessorFunc)
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gimp_lut_process,
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lut, 2, &srcPR, &destPR);
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gimp_lut_free (lut);
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gimp_drawable_merge_shadow (drawable, TRUE,
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_("Brightness-Contrast"));
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gimp_drawable_update (drawable, x, y, width, height);
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}
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}
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g_object_unref (config);
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}
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