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gimp/app/core/gimpdrawable-bucket-fill.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 <string.h>
#include <cairo.h>
#include <gegl.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include "libgimpcolor/gimpcolor.h"
#include "core-types.h"
#include "gegl/gimp-gegl-apply-operation.h"
#include "gegl/gimp-gegl-mask.h"
#include "gegl/gimp-gegl-mask-combine.h"
#include "gegl/gimp-gegl-utils.h"
#include "gimp.h"
#include "gimp-utils.h"
#include "gimpchannel-combine.h"
#include "gimpcontext.h"
#include "gimpdrawable.h"
#include "gimpdrawable-bucket-fill.h"
#include "gimpimage.h"
#include "gimppattern.h"
#include "gimppickable.h"
#include "gimppickable-contiguous-region.h"
#include "gimp-intl.h"
static void gimp_drawable_bucket_fill_internal (GimpDrawable *drawable,
GimpFillType fill_type,
gint paint_mode,
gdouble opacity,
gboolean fill_transparent,
GimpSelectCriterion fill_criterion,
gdouble threshold,
gboolean sample_merged,
gdouble x,
gdouble y,
const GimpRGB *color,
GimpPattern *pattern);
/* public functions */
gboolean
gimp_drawable_bucket_fill (GimpDrawable *drawable,
GimpContext *context,
GimpFillType fill_type,
gint paint_mode,
gdouble opacity,
gboolean fill_transparent,
GimpSelectCriterion fill_criterion,
gdouble threshold,
gboolean sample_merged,
gdouble x,
gdouble y,
GError **error)
{
GimpRGB color;
GimpPattern *pattern;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), FALSE);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (! gimp_get_fill_params (context, fill_type, &color, &pattern, error))
return FALSE;
gimp_drawable_bucket_fill_internal (drawable,
fill_type,
paint_mode, opacity,
fill_transparent, fill_criterion,
threshold, sample_merged,
x, y,
&color, pattern);
return TRUE;
}
/* private functions */
static void
gimp_drawable_bucket_fill_internal (GimpDrawable *drawable,
GimpFillType fill_type,
gint paint_mode,
gdouble opacity,
gboolean fill_transparent,
GimpSelectCriterion fill_criterion,
gdouble threshold,
gboolean sample_merged,
gdouble x,
gdouble y,
const GimpRGB *color,
GimpPattern *pattern)
{
GimpImage *image;
GimpPickable *pickable;
GeglBuffer *buffer;
GeglBuffer *mask_buffer;
gint x1, y1, x2, y2;
gint mask_offset_x = 0;
gint mask_offset_y = 0;
gboolean selection;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
g_return_if_fail (fill_type != GIMP_FILL_PATTERN ||
GIMP_IS_PATTERN (pattern));
g_return_if_fail (fill_type == GIMP_FILL_PATTERN ||
color != NULL);
image = gimp_item_get_image (GIMP_ITEM (drawable));
selection = gimp_item_mask_bounds (GIMP_ITEM (drawable), &x1, &y1, &x2, &y2);
if ((x1 == x2) || (y1 == y2))
return;
gimp_set_busy (image->gimp);
if (sample_merged)
pickable = GIMP_PICKABLE (image);
else
pickable = GIMP_PICKABLE (drawable);
/* Do a seed bucket fill...To do this, calculate a new
* contiguous region. If there is a selection, calculate the
* intersection of this region with the existing selection.
*/
mask_buffer = gimp_pickable_contiguous_region_by_seed (pickable,
TRUE,
threshold,
fill_transparent,
fill_criterion,
(gint) x,
(gint) y);
if (selection)
{
GimpDrawable *sel;
gint off_x = 0;
gint off_y = 0;
if (! sample_merged)
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
sel = GIMP_DRAWABLE (gimp_image_get_mask (image));
gimp_gegl_mask_combine_buffer (mask_buffer,
gimp_drawable_get_buffer (sel),
GIMP_CHANNEL_OP_INTERSECT,
-off_x, -off_y);
}
gimp_gegl_mask_bounds (mask_buffer, &x1, &y1, &x2, &y2);
/* make sure we handle the mask correctly if it was sample-merged */
if (sample_merged)
{
GimpItem *item = GIMP_ITEM (drawable);
gint off_x, off_y;
/* Limit the channel bounds to the drawable's extents */
gimp_item_get_offset (item, &off_x, &off_y);
x1 = CLAMP (x1, off_x, (off_x + gimp_item_get_width (item)));
y1 = CLAMP (y1, off_y, (off_y + gimp_item_get_height (item)));
x2 = CLAMP (x2, off_x, (off_x + gimp_item_get_width (item)));
y2 = CLAMP (y2, off_y, (off_y + gimp_item_get_height (item)));
mask_offset_x = x1;
mask_offset_y = y1;
/* translate mask bounds to drawable coords */
x1 -= off_x;
y1 -= off_y;
x2 -= off_x;
y2 -= off_y;
}
else
{
mask_offset_x = x1;
mask_offset_y = y1;
}
buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, x2 - x1, y2 - y1),
gimp_drawable_get_format_with_alpha (drawable));
switch (fill_type)
{
case GIMP_FILL_FOREGROUND:
case GIMP_FILL_BACKGROUND:
case GIMP_FILL_WHITE:
case GIMP_FILL_TRANSPARENT:
{
GeglColor *gegl_color = gimp_gegl_color_new (color);
gegl_buffer_set_color (buffer, NULL, gegl_color);
g_object_unref (gegl_color);
}
break;
case GIMP_FILL_PATTERN:
{
GeglBuffer *pattern_buffer = gimp_pattern_create_buffer (pattern);
gegl_buffer_set_pattern (buffer, NULL, pattern_buffer, -x1, -y1);
g_object_unref (pattern_buffer);
}
break;
}
gimp_gegl_apply_opacity (buffer, NULL, NULL, buffer,
mask_buffer,
-mask_offset_x,
-mask_offset_y,
1.0);
g_object_unref (mask_buffer);
/* Apply it to the image */
gimp_drawable_apply_buffer (drawable, buffer,
GEGL_RECTANGLE (0, 0, x2 - x1, y2 - y1),
TRUE, C_("undo-type", "Bucket Fill"),
opacity, paint_mode,
NULL, x1, y1);
g_object_unref (buffer);
gimp_drawable_update (drawable, x1, y1, x2 - x1, y2 - y1);
gimp_unset_busy (image->gimp);
}
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