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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 <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <cairo.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "libgimpbase/gimpbase.h"
#include "core-types.h"
#include "gegl/gimpapplicator.h"
#include "gimp.h"
#include "gimpchannel.h"
#include "gimpchunkiterator.h"
#include "gimpdrawable-combine.h"
#include "gimpimage.h"
void
gimp_drawable_real_apply_buffer (GimpDrawable *drawable,
GeglBuffer *buffer,
const GeglRectangle *buffer_region,
gboolean push_undo,
const gchar *undo_desc,
gdouble opacity,
GimpLayerMode mode,
GimpLayerColorSpace blend_space,
GimpLayerColorSpace composite_space,
GimpLayerCompositeMode composite_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);
GimpApplicator *applicator;
GimpChunkIterator *iter;
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 */
if (! 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))
{
return;
}
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
*/
if (! 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))
{
return;
}
}
if (push_undo)
{
gimp_drawable_push_undo (drawable, undo_desc,
NULL, x, y, width, height);
}
applicator = gimp_applicator_new (NULL);
if (mask)
{
GeglBuffer *mask_buffer;
mask_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
gimp_applicator_set_mask_buffer (applicator, mask_buffer);
gimp_applicator_set_mask_offset (applicator, -offset_x, -offset_y);
}
gimp_applicator_set_src_buffer (applicator, base_buffer);
gimp_applicator_set_dest_buffer (applicator,
gimp_drawable_get_buffer (drawable));
gimp_applicator_set_apply_buffer (applicator, buffer);
gimp_applicator_set_apply_offset (applicator,
base_x - buffer_region->x,
base_y - buffer_region->y);
gimp_applicator_set_opacity (applicator, opacity);
gimp_applicator_set_mode (applicator, mode,
blend_space, composite_space, composite_mode);
gimp_applicator_set_affect (applicator,
gimp_drawable_get_active_mask (drawable));
iter = gimp_chunk_iterator_new (cairo_region_create_rectangle (
&(cairo_rectangle_int_t) {x, y, width, height}));
while (gimp_chunk_iterator_next (iter))
{
GeglRectangle rect;
while (gimp_chunk_iterator_get_rect (iter, &rect))
gimp_applicator_blit (applicator, &rect);
}
g_object_unref (applicator);
}
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