2a96d598c3
Largely based on a patch by Ell, with the enum type renamed and various small changes. Adds another axis of configurability to the existing layer mode madness, and is WIP too.
112 lines
3.4 KiB
C
112 lines
3.4 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 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 <http://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 "gegl/gimp-gegl-utils.h"
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#include "gimpdrawable.h"
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#include "gimpdrawable-private.h"
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#include "gimpdrawable-shadow.h"
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GeglBuffer *
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gimp_drawable_get_shadow_buffer (GimpDrawable *drawable)
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{
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GimpItem *item;
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gint width;
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gint height;
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const Babl *format;
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g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
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item = GIMP_ITEM (drawable);
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width = gimp_item_get_width (item);
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height = gimp_item_get_height (item);
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format = gimp_drawable_get_format (drawable);
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if (drawable->private->shadow)
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{
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if ((width != gegl_buffer_get_width (drawable->private->shadow)) ||
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(height != gegl_buffer_get_height (drawable->private->shadow)) ||
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(format != gegl_buffer_get_format (drawable->private->shadow)))
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{
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gimp_drawable_free_shadow_buffer (drawable);
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}
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else
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{
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return drawable->private->shadow;
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}
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}
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drawable->private->shadow = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
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width, height),
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format);
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return drawable->private->shadow;
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}
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void
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gimp_drawable_free_shadow_buffer (GimpDrawable *drawable)
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{
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g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
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if (drawable->private->shadow)
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{
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g_object_unref (drawable->private->shadow);
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drawable->private->shadow = NULL;
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}
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}
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void
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gimp_drawable_merge_shadow_buffer (GimpDrawable *drawable,
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gboolean push_undo,
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const gchar *undo_desc)
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{
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gint x, y;
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gint width, height;
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g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
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g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
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g_return_if_fail (GEGL_IS_BUFFER (drawable->private->shadow));
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/* A useful optimization here is to limit the update to the
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* extents of the selection mask, as it cannot extend beyond
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* them.
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*/
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if (gimp_item_mask_intersect (GIMP_ITEM (drawable), &x, &y, &width, &height))
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{
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GeglBuffer *buffer = g_object_ref (drawable->private->shadow);
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gimp_drawable_apply_buffer (drawable, buffer,
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GEGL_RECTANGLE (x, y, width, height),
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push_undo, undo_desc,
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GIMP_OPACITY_OPAQUE,
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GIMP_LAYER_MODE_REPLACE,
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GIMP_LAYER_COMPOSITE_AUTO,
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NULL, x, y);
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g_object_unref (buffer);
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}
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}
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