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gimp/app/core/gimpdrawable-combine.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include "libgimpbase/gimpbase.h"
#include "core-types.h"
#include "gegl/gimp-babl-compat.h"
#include "gegl/gimp-gegl-loops.h"
#include "gegl/gimp-gegl-nodes.h"
#include "gegl/gimp-gegl-utils.h"
#include "gimp.h"
#include "gimp-apply-operation.h"
#include "gimpchannel.h"
#include "gimpdrawable-combine.h"
#include "gimpdrawableundo.h"
#include "gimpimage.h"
#include "gimpimage-undo.h"
#include "gimptempbuf.h"
void
gimp_drawable_real_apply_buffer (GimpDrawable *drawable,
GeglBuffer *buffer,
const GeglRectangle *buffer_region,
gboolean push_undo,
const gchar *undo_desc,
gdouble opacity,
GimpLayerModeEffects mode,
GeglBuffer *base_buffer,
gint base_x,
gint base_y)
{
GimpItem *item = GIMP_ITEM (drawable);
GimpImage *image = gimp_item_get_image (item);
GimpChannel *mask = gimp_image_get_mask (image);
GeglBuffer *mask_buffer = NULL;
GeglNode *apply;
GimpComponentMask affect;
gint x, y, width, height;
gint offset_x, offset_y;
/* don't apply the mask to itself and don't apply an empty mask */
if (GIMP_DRAWABLE (mask) == drawable || gimp_channel_is_empty (mask))
mask = NULL;
if (! base_buffer)
base_buffer = gimp_drawable_get_buffer (drawable);
/* get the layer offsets */
gimp_item_get_offset (item, &offset_x, &offset_y);
/* make sure the image application coordinates are within drawable bounds */
gimp_rectangle_intersect (base_x, base_y,
buffer_region->width, buffer_region->height,
0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item),
&x, &y, &width, &height);
if (mask)
{
GimpItem *mask_item = GIMP_ITEM (mask);
/* make sure coordinates are in mask bounds ...
* we need to add the layer offset to transform coords
* into the mask coordinate system
*/
gimp_rectangle_intersect (x, y, width, height,
-offset_x, -offset_y,
gimp_item_get_width (mask_item),
gimp_item_get_height (mask_item),
&x, &y, &width, &height);
}
if (push_undo)
{
GimpDrawableUndo *undo;
gimp_drawable_push_undo (drawable, undo_desc,
NULL, x, y, width, height);
undo = GIMP_DRAWABLE_UNDO (gimp_image_undo_get_fadeable (image));
if (undo)
{
undo->paint_mode = mode;
undo->opacity = opacity;
undo->applied_buffer =
gegl_buffer_new (GEGL_RECTANGLE (0, 0, width, height),
gegl_buffer_get_format (buffer));
gegl_buffer_copy (buffer,
GEGL_RECTANGLE (buffer_region->x + (x - base_x),
buffer_region->y + (y - base_y),
width, height),
undo->applied_buffer,
GEGL_RECTANGLE (0, 0, width, height));
}
}
if (mask)
mask_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
affect = gimp_drawable_get_active_mask (drawable);
apply = gimp_gegl_create_apply_buffer_node (buffer,
base_x - buffer_region->x,
base_y - buffer_region->y,
0,
0,
0,
0,
mask_buffer,
-offset_x,
-offset_y,
opacity,
mode,
affect);
gimp_apply_operation (base_buffer, NULL, NULL,
apply,
gimp_drawable_get_buffer (drawable),
GEGL_RECTANGLE (x, y, width, height));
g_object_unref (apply);
}
/* Similar to gimp_drawable_apply_region but works in "replace" mode (i.e.
* transparent pixels in src2 make the result transparent rather than
* opaque.
*
* Takes an additional mask pixel region as well.
*/
void
gimp_drawable_real_replace_buffer (GimpDrawable *drawable,
GeglBuffer *buffer,
const GeglRectangle *buffer_region,
gboolean push_undo,
const gchar *undo_desc,
gdouble opacity,
GeglBuffer *mask_buffer,
const GeglRectangle *mask_buffer_region,
gint dest_x,
gint dest_y)
{
GimpItem *item = GIMP_ITEM (drawable);
GimpImage *image = gimp_item_get_image (item);
GimpChannel *mask = gimp_image_get_mask (image);
GeglBuffer *drawable_buffer;
gint x, y, width, height;
gint offset_x, offset_y;
gboolean active_components[MAX_CHANNELS];
/* don't apply the mask to itself and don't apply an empty mask */
if (GIMP_DRAWABLE (mask) == drawable || gimp_channel_is_empty (mask))
mask = NULL;
/* configure the active channel array */
gimp_drawable_get_active_components (drawable, active_components);
/* get the layer offsets */
gimp_item_get_offset (item, &offset_x, &offset_y);
/* make sure the image application coordinates are within drawable bounds */
gimp_rectangle_intersect (dest_x, dest_y,
buffer_region->width, buffer_region->height,
0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item),
&x, &y, &width, &height);
if (mask)
{
GimpItem *mask_item = GIMP_ITEM (mask);
/* make sure coordinates are in mask bounds ...
* we need to add the layer offset to transform coords
* into the mask coordinate system
*/
gimp_rectangle_intersect (x, y, width, height,
-offset_x, -offset_y,
gimp_item_get_width (mask_item),
gimp_item_get_height (mask_item),
&x, &y, &width, &height);
}
/* If the calling procedure specified an undo step... */
if (push_undo)
gimp_drawable_push_undo (drawable, undo_desc,
NULL, x, y, width, height);
drawable_buffer = gimp_drawable_get_buffer (drawable);
if (mask)
{
GeglBuffer *src_buffer;
GeglBuffer *dest_buffer;
src_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
dest_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, width, height),
gegl_buffer_get_format (src_buffer));
gegl_buffer_copy (src_buffer,
GEGL_RECTANGLE (x + offset_x, y + offset_y,
width, height),
dest_buffer,
GEGL_RECTANGLE (0, 0, 0, 0));
gimp_gegl_combine_mask (mask_buffer, mask_buffer_region,
dest_buffer, GEGL_RECTANGLE (0, 0, width, height),
1.0);
gimp_gegl_replace (buffer, buffer_region,
drawable_buffer, GEGL_RECTANGLE (x, y, width, height),
dest_buffer, GEGL_RECTANGLE (0, 0, width, height),
drawable_buffer, GEGL_RECTANGLE (x, y, width, height),
opacity,
active_components);
g_object_unref (dest_buffer);
}
else
{
gimp_gegl_replace (buffer, buffer_region,
drawable_buffer, GEGL_RECTANGLE (x, y, width, height),
mask_buffer, mask_buffer_region,
drawable_buffer, GEGL_RECTANGLE (x, y, width, height),
opacity,
active_components);
}
}
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