mirror of https://github.com/GNOME/gimp.git
269 lines
9.3 KiB
C
269 lines
9.3 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 <string.h>
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#include <cairo.h>
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#include <gegl.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include "libgimpcolor/gimpcolor.h"
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#include "core-types.h"
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#include "gegl/gimp-gegl-apply-operation.h"
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#include "gegl/gimp-gegl-mask.h"
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#include "gegl/gimp-gegl-mask-combine.h"
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#include "gegl/gimp-gegl-utils.h"
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#include "gimp.h"
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#include "gimpchannel-combine.h"
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#include "gimpcontext.h"
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#include "gimpdrawable.h"
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#include "gimpdrawable-bucket-fill.h"
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#include "gimperror.h"
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#include "gimpimage.h"
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#include "gimpimage-contiguous-region.h"
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#include "gimppattern.h"
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#include "gimp-intl.h"
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static void gimp_drawable_bucket_fill_internal (GimpDrawable *drawable,
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GimpBucketFillMode fill_mode,
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gint paint_mode,
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gdouble opacity,
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gboolean fill_transparent,
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GimpSelectCriterion fill_criterion,
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gdouble threshold,
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gboolean sample_merged,
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gdouble x,
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gdouble y,
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const GimpRGB *color,
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GimpPattern *pattern);
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/* public functions */
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gboolean
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gimp_drawable_bucket_fill (GimpDrawable *drawable,
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GimpContext *context,
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GimpBucketFillMode fill_mode,
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gint paint_mode,
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gdouble opacity,
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gboolean fill_transparent,
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GimpSelectCriterion fill_criterion,
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gdouble threshold,
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gboolean sample_merged,
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gdouble x,
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gdouble y,
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GError **error)
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{
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GimpRGB color;
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GimpPattern *pattern = NULL;
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g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
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g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), FALSE);
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g_return_val_if_fail (GIMP_IS_CONTEXT (context), FALSE);
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g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
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if (fill_mode == GIMP_FG_BUCKET_FILL)
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{
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gimp_context_get_foreground (context, &color);
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}
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else if (fill_mode == GIMP_BG_BUCKET_FILL)
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{
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gimp_context_get_background (context, &color);
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}
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else if (fill_mode == GIMP_PATTERN_BUCKET_FILL)
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{
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pattern = gimp_context_get_pattern (context);
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if (! pattern)
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{
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g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
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_("No patterns available for this operation."));
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return FALSE;
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}
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}
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else
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{
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g_warning ("%s: invalid fill_mode passed", G_STRFUNC);
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return FALSE;
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}
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gimp_drawable_bucket_fill_internal (drawable,
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fill_mode,
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paint_mode, opacity,
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fill_transparent, fill_criterion,
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threshold, sample_merged,
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x, y,
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&color, pattern);
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return TRUE;
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}
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/* private functions */
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static void
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gimp_drawable_bucket_fill_internal (GimpDrawable *drawable,
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GimpBucketFillMode fill_mode,
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gint paint_mode,
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gdouble opacity,
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gboolean fill_transparent,
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GimpSelectCriterion fill_criterion,
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gdouble threshold,
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gboolean sample_merged,
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gdouble x,
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gdouble y,
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const GimpRGB *color,
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GimpPattern *pattern)
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{
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GimpImage *image;
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GeglBuffer *buffer;
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GeglBuffer *mask_buffer;
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gint x1, y1, x2, y2;
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gint mask_offset_x = 0;
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gint mask_offset_y = 0;
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gboolean selection;
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g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
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g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
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g_return_if_fail (fill_mode != GIMP_PATTERN_BUCKET_FILL ||
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GIMP_IS_PATTERN (pattern));
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g_return_if_fail (fill_mode == GIMP_PATTERN_BUCKET_FILL ||
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color != NULL);
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image = gimp_item_get_image (GIMP_ITEM (drawable));
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selection = gimp_item_mask_bounds (GIMP_ITEM (drawable), &x1, &y1, &x2, &y2);
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if ((x1 == x2) || (y1 == y2))
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return;
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gimp_set_busy (image->gimp);
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/* Do a seed bucket fill...To do this, calculate a new
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* contiguous region. If there is a selection, calculate the
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* intersection of this region with the existing selection.
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*/
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mask_buffer = gimp_image_contiguous_region_by_seed (image, drawable,
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sample_merged,
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TRUE,
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threshold,
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fill_transparent,
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fill_criterion,
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(gint) x,
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(gint) y);
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if (selection)
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{
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GimpDrawable *sel;
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gint off_x = 0;
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gint off_y = 0;
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if (! sample_merged)
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gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
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sel = GIMP_DRAWABLE (gimp_image_get_mask (image));
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gimp_gegl_mask_combine_buffer (mask_buffer,
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gimp_drawable_get_buffer (sel),
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GIMP_CHANNEL_OP_INTERSECT,
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-off_x, -off_y);
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}
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gimp_gegl_mask_bounds (mask_buffer, &x1, &y1, &x2, &y2);
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/* make sure we handle the mask correctly if it was sample-merged */
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if (sample_merged)
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{
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GimpItem *item = GIMP_ITEM (drawable);
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gint off_x, off_y;
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/* Limit the channel bounds to the drawable's extents */
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gimp_item_get_offset (item, &off_x, &off_y);
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x1 = CLAMP (x1, off_x, (off_x + gimp_item_get_width (item)));
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y1 = CLAMP (y1, off_y, (off_y + gimp_item_get_height (item)));
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x2 = CLAMP (x2, off_x, (off_x + gimp_item_get_width (item)));
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y2 = CLAMP (y2, off_y, (off_y + gimp_item_get_height (item)));
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mask_offset_x = x1;
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mask_offset_y = y1;
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/* translate mask bounds to drawable coords */
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x1 -= off_x;
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y1 -= off_y;
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x2 -= off_x;
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y2 -= off_y;
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}
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else
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{
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mask_offset_x = x1;
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mask_offset_y = y1;
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}
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buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, x2 - x1, y2 - y1),
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gimp_drawable_get_format_with_alpha (drawable));
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switch (fill_mode)
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{
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case GIMP_FG_BUCKET_FILL:
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case GIMP_BG_BUCKET_FILL:
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{
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GeglColor *gegl_color = gimp_gegl_color_new (color);
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gegl_buffer_set_color (buffer, NULL, gegl_color);
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g_object_unref (gegl_color);
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}
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break;
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case GIMP_PATTERN_BUCKET_FILL:
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{
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GeglBuffer *pattern_buffer = gimp_pattern_create_buffer (pattern);
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gegl_buffer_set_pattern (buffer, NULL, pattern_buffer, -x1, -y1);
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g_object_unref (pattern_buffer);
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}
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break;
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}
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gimp_gegl_apply_opacity (buffer, NULL, NULL, buffer,
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mask_buffer,
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-mask_offset_x,
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-mask_offset_y,
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1.0);
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g_object_unref (mask_buffer);
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/* Apply it to the image */
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gimp_drawable_apply_buffer (drawable, buffer,
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GEGL_RECTANGLE (0, 0, x2 - x1, y2 - y1),
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TRUE, C_("undo-type", "Bucket Fill"),
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opacity, paint_mode,
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NULL, x1, y1);
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g_object_unref (buffer);
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gimp_drawable_update (drawable, x1, y1, x2 - x1, y2 - y1);
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gimp_unset_busy (image->gimp);
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}
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