mirror of https://github.com/GNOME/gimp.git
105 lines
3.2 KiB
C
105 lines
3.2 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 <gegl.h>
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#include "core-types.h"
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#include "base/pixel-region.h"
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#include "base/tile-manager.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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TileManager *
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gimp_drawable_get_shadow_tiles (GimpDrawable *drawable)
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{
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GimpItem *item;
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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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if (drawable->private->shadow)
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{
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if ((gimp_item_get_width (item) != tile_manager_width (drawable->private->shadow)) ||
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(gimp_item_get_height (item) != tile_manager_height (drawable->private->shadow)) ||
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(drawable->bytes != tile_manager_bpp (drawable->private->shadow)))
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{
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gimp_drawable_free_shadow_tiles (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 = tile_manager_new (gimp_item_get_width (item),
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gimp_item_get_height (item),
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drawable->bytes);
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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_tiles (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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tile_manager_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_tiles (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 (drawable->private->shadow != NULL);
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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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TileManager *tiles = tile_manager_ref (drawable->private->shadow);
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PixelRegion shadowPR;
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pixel_region_init (&shadowPR, tiles, x, y, width, height, FALSE);
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gimp_drawable_apply_region (drawable, &shadowPR,
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push_undo, undo_desc,
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GIMP_OPACITY_OPAQUE, GIMP_REPLACE_MODE,
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NULL, NULL, x, y);
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tile_manager_unref (tiles);
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}
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}
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