mirror of https://github.com/GNOME/gimp.git
318 lines
11 KiB
C
318 lines
11 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 "paint-funcs/paint-funcs.h"
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#include "gimpchannel.h"
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#include "gimpdrawable-combine.h"
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#include "gimpdrawableundo.h"
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#include "gimpimage.h"
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#include "gimpimage-undo.h"
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void
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gimp_drawable_real_apply_region (GimpDrawable *drawable,
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PixelRegion *src2PR,
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gboolean push_undo,
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const gchar *undo_desc,
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gdouble opacity,
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GimpLayerModeEffects mode,
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TileManager *src1_tiles,
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PixelRegion *destPR,
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gint x,
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gint y)
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{
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GimpItem *item = GIMP_ITEM (drawable);
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GimpImage *image = gimp_item_get_image (item);
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GimpChannel *mask = gimp_image_get_mask (image);
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gint x1, y1, x2, y2;
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gint offset_x, offset_y;
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PixelRegion src1PR, my_destPR;
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CombinationMode operation;
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gboolean active_components[MAX_CHANNELS];
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/* don't apply the mask to itself and don't apply an empty mask */
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if (GIMP_DRAWABLE (mask) == drawable || gimp_channel_is_empty (mask))
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mask = NULL;
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/* configure the active channel array */
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gimp_drawable_get_active_components (drawable, active_components);
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/* determine what sort of operation is being attempted and
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* if it's actually legal...
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*/
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operation = gimp_image_get_combination_mode (gimp_drawable_type (drawable),
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src2PR->bytes);
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if (operation == -1)
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{
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g_warning ("%s: illegal parameters.", G_STRFUNC);
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return;
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}
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/* get the layer offsets */
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gimp_item_get_offset (item, &offset_x, &offset_y);
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/* make sure the image application coordinates are within drawable bounds */
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x1 = CLAMP (x, 0, gimp_item_get_width (item));
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y1 = CLAMP (y, 0, gimp_item_get_height (item));
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x2 = CLAMP (x + src2PR->w, 0, gimp_item_get_width (item));
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y2 = CLAMP (y + src2PR->h, 0, gimp_item_get_height (item));
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if (mask)
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{
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GimpItem *mask_item = GIMP_ITEM (mask);
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/* make sure coordinates are in mask bounds ...
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* we need to add the layer offset to transform coords
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* into the mask coordinate system
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*/
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x1 = CLAMP (x1, -offset_x, gimp_item_get_width (mask_item) - offset_x);
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y1 = CLAMP (y1, -offset_y, gimp_item_get_height (mask_item) - offset_y);
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x2 = CLAMP (x2, -offset_x, gimp_item_get_width (mask_item) - offset_x);
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y2 = CLAMP (y2, -offset_y, gimp_item_get_height (mask_item) - offset_y);
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}
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/* If the calling procedure specified an undo step... */
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if (push_undo)
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{
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GimpDrawableUndo *undo;
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gimp_drawable_push_undo (drawable, undo_desc,
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x1, y1,
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x2 - x1, y2 - y1,
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NULL, FALSE);
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undo = GIMP_DRAWABLE_UNDO (gimp_image_undo_get_fadeable (image));
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if (undo)
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{
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PixelRegion tmp_srcPR;
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PixelRegion tmp_destPR;
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undo->paint_mode = mode;
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undo->opacity = opacity;
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undo->src2_tiles = tile_manager_new (x2 - x1, y2 - y1,
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src2PR->bytes);
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tmp_srcPR = *src2PR;
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pixel_region_resize (&tmp_srcPR,
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src2PR->x + (x1 - x), src2PR->y + (y1 - y),
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x2 - x1, y2 - y1);
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pixel_region_init (&tmp_destPR, undo->src2_tiles,
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0, 0,
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x2 - x1, y2 - y1, TRUE);
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copy_region (&tmp_srcPR, &tmp_destPR);
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}
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}
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/* configure the pixel regions */
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/* check if an alternative to using the drawable's data as src1 was
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* provided...
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*/
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if (src1_tiles)
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{
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pixel_region_init (&src1PR, src1_tiles,
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x1, y1, x2 - x1, y2 - y1,
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FALSE);
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}
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else
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{
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pixel_region_init (&src1PR, gimp_drawable_get_tiles (drawable),
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x1, y1, x2 - x1, y2 - y1,
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FALSE);
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}
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/* check if an alternative to using the drawable's data as dest was
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* provided...
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*/
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if (!destPR)
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{
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pixel_region_init (&my_destPR, gimp_drawable_get_tiles (drawable),
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x1, y1, x2 - x1, y2 - y1,
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TRUE);
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destPR = &my_destPR;
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}
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pixel_region_resize (src2PR,
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src2PR->x + (x1 - x), src2PR->y + (y1 - y),
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x2 - x1, y2 - y1);
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if (mask)
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{
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PixelRegion maskPR;
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pixel_region_init (&maskPR,
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gimp_drawable_get_tiles (GIMP_DRAWABLE (mask)),
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x1 + offset_x,
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y1 + offset_y,
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x2 - x1, y2 - y1,
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FALSE);
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combine_regions (&src1PR, src2PR, destPR, &maskPR, NULL,
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opacity * 255.999,
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mode,
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active_components,
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operation);
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}
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else
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{
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combine_regions (&src1PR, src2PR, destPR, NULL, NULL,
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opacity * 255.999,
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mode,
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active_components,
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operation);
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}
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}
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/* Similar to gimp_drawable_apply_region but works in "replace" mode (i.e.
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* transparent pixels in src2 make the result transparent rather than
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* opaque.
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*
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* Takes an additional mask pixel region as well.
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*/
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void
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gimp_drawable_real_replace_region (GimpDrawable *drawable,
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PixelRegion *src2PR,
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gboolean push_undo,
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const gchar *undo_desc,
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gdouble opacity,
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PixelRegion *maskPR,
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gint x,
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gint y)
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{
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GimpItem *item = GIMP_ITEM (drawable);
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GimpImage *image = gimp_item_get_image (item);
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GimpChannel *mask = gimp_image_get_mask (image);
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gint x1, y1, x2, y2;
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gint offset_x, offset_y;
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PixelRegion src1PR, destPR;
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CombinationMode operation;
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gboolean active_components[MAX_CHANNELS];
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/* don't apply the mask to itself and don't apply an empty mask */
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if (GIMP_DRAWABLE (mask) == drawable || gimp_channel_is_empty (mask))
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mask = NULL;
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/* configure the active channel array */
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gimp_drawable_get_active_components (drawable, active_components);
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/* determine what sort of operation is being attempted and
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* if it's actually legal...
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*/
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operation = gimp_image_get_combination_mode (gimp_drawable_type (drawable),
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src2PR->bytes);
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if (operation == -1)
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{
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g_warning ("%s: illegal parameters.", G_STRFUNC);
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return;
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}
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/* get the layer offsets */
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gimp_item_get_offset (item, &offset_x, &offset_y);
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/* make sure the image application coordinates are within drawable bounds */
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x1 = CLAMP (x, 0, gimp_item_get_width (item));
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y1 = CLAMP (y, 0, gimp_item_get_height (item));
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x2 = CLAMP (x + src2PR->w, 0, gimp_item_get_width (item));
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y2 = CLAMP (y + src2PR->h, 0, gimp_item_get_height (item));
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if (mask)
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{
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GimpItem *mask_item = GIMP_ITEM (mask);
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/* make sure coordinates are in mask bounds ...
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* we need to add the layer offset to transform coords
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* into the mask coordinate system
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*/
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x1 = CLAMP (x1, -offset_x, gimp_item_get_width (mask_item) - offset_x);
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y1 = CLAMP (y1, -offset_y, gimp_item_get_height (mask_item) - offset_y);
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x2 = CLAMP (x2, -offset_x, gimp_item_get_width (mask_item) - offset_x);
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y2 = CLAMP (y2, -offset_y, gimp_item_get_height (mask_item) - offset_y);
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}
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/* If the calling procedure specified an undo step... */
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if (push_undo)
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gimp_drawable_push_undo (drawable, undo_desc,
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x1, y1,
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x2 - x1, y2 - y1,
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NULL, FALSE);
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/* configure the pixel regions */
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pixel_region_init (&src1PR, gimp_drawable_get_tiles (drawable),
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x1, y1, x2 - x1, y2 - y1,
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FALSE);
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pixel_region_init (&destPR, gimp_drawable_get_tiles (drawable),
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x1, y1, x2 - x1, y2 - y1,
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TRUE);
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pixel_region_resize (src2PR,
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src2PR->x + (x1 - x), src2PR->y + (y1 - y),
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x2 - x1, y2 - y1);
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if (mask)
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{
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PixelRegion mask2PR, tempPR;
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guchar *temp_data;
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pixel_region_init (&mask2PR,
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gimp_drawable_get_tiles (GIMP_DRAWABLE (mask)),
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x1 + offset_x,
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y1 + offset_y,
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x2 - x1, y2 - y1,
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FALSE);
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temp_data = g_malloc ((y2 - y1) * (x2 - x1));
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pixel_region_init_data (&tempPR, temp_data, 1, x2 - x1,
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0, 0, x2 - x1, y2 - y1);
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copy_region (&mask2PR, &tempPR);
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pixel_region_init_data (&tempPR, temp_data, 1, x2 - x1,
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0, 0, x2 - x1, y2 - y1);
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apply_mask_to_region (&tempPR, maskPR, OPAQUE_OPACITY);
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pixel_region_init_data (&tempPR, temp_data, 1, x2 - x1,
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0, 0, x2 - x1, y2 - y1);
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combine_regions_replace (&src1PR, src2PR, &destPR, &tempPR, NULL,
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opacity * 255.999,
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active_components,
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operation);
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g_free (temp_data);
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}
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else
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{
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combine_regions_replace (&src1PR, src2PR, &destPR, maskPR, NULL,
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opacity * 255.999,
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active_components,
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operation);
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}
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}
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