mirror of https://github.com/GNOME/gimp.git
151 lines
4.7 KiB
C
151 lines
4.7 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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* gimplayer-project.h
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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 "paint-funcs/paint-funcs.h"
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#include "gimpimage.h"
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#include "gimplayer.h"
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#include "gimplayer-project.h"
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#include "gimplayermask.h"
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void
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gimp_layer_project_region (GimpDrawable *drawable,
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gint x,
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gint y,
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gint width,
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gint height,
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PixelRegion *projPR,
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gboolean combine)
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{
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GimpLayer *layer = GIMP_LAYER (drawable);
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GimpLayerMask *mask = gimp_layer_get_mask (layer);
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if (mask && gimp_layer_mask_get_show (mask))
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{
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/* If we're showing the layer mask instead of the layer... */
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PixelRegion srcPR;
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TileManager *temp_tiles;
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gimp_drawable_init_src_region (GIMP_DRAWABLE (mask), &srcPR,
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x, y, width, height,
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&temp_tiles);
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copy_gray_to_region (&srcPR, projPR);
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if (temp_tiles)
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tile_manager_unref (temp_tiles);
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}
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else
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{
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/* Otherwise, normal */
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GimpImage *image = gimp_item_get_image (GIMP_ITEM (layer));
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PixelRegion srcPR;
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PixelRegion maskPR;
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PixelRegion *mask_pr = NULL;
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const guchar *colormap = NULL;
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TileManager *temp_mask_tiles = NULL;
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TileManager *temp_layer_tiles = NULL;
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InitialMode initial_mode;
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CombinationMode combination_mode;
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gimp_drawable_init_src_region (drawable, &srcPR,
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x, y, width, height,
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&temp_layer_tiles);
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if (mask && gimp_layer_mask_get_apply (mask))
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{
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gimp_drawable_init_src_region (GIMP_DRAWABLE (mask), &maskPR,
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x, y, width, height,
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&temp_mask_tiles);
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mask_pr = &maskPR;
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}
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/* Based on the type of the layer, project the layer onto the
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* projection image...
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*/
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switch (gimp_drawable_type (drawable))
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{
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case GIMP_RGB_IMAGE:
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case GIMP_GRAY_IMAGE:
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initial_mode = INITIAL_INTENSITY;
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combination_mode = COMBINE_INTEN_A_INTEN;
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break;
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case GIMP_RGBA_IMAGE:
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case GIMP_GRAYA_IMAGE:
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initial_mode = INITIAL_INTENSITY_ALPHA;
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combination_mode = COMBINE_INTEN_A_INTEN_A;
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break;
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case GIMP_INDEXED_IMAGE:
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colormap = gimp_drawable_get_colormap (drawable),
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initial_mode = INITIAL_INDEXED;
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combination_mode = COMBINE_INTEN_A_INDEXED;
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break;
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case GIMP_INDEXEDA_IMAGE:
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colormap = gimp_drawable_get_colormap (drawable),
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initial_mode = INITIAL_INDEXED_ALPHA;
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combination_mode = COMBINE_INTEN_A_INDEXED_A;
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break;
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default:
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g_assert_not_reached ();
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break;
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}
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if (combine)
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{
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combine_regions (projPR, &srcPR, projPR, mask_pr,
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colormap,
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gimp_layer_get_opacity (layer) * 255.999,
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gimp_layer_get_mode (layer),
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image->visible,
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combination_mode);
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}
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else
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{
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initial_region (&srcPR, projPR, mask_pr,
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colormap,
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gimp_layer_get_opacity (layer) * 255.999,
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gimp_layer_get_mode (layer),
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image->visible,
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initial_mode);
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}
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if (temp_layer_tiles)
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tile_manager_unref (temp_layer_tiles);
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if (temp_mask_tiles)
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tile_manager_unref (temp_mask_tiles);
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}
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}
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