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-rw-r--r--app/core/gimpdrawable-bucket-fill.c499
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diff --git a/app/core/gimpdrawable-bucket-fill.c b/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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <cairo.h>
+#define GEGL_ITERATOR2_API
+#include <gegl.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+#include "libgimpbase/gimpbase.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 "operations/layer-modes/gimp-layer-modes.h"
+
+#include "gimp.h"
+#include "gimpchannel.h"
+#include "gimpdrawable.h"
+#include "gimpdrawable-bucket-fill.h"
+#include "gimpfilloptions.h"
+#include "gimpimage.h"
+#include "gimppickable.h"
+#include "gimppickable-contiguous-region.h"
+
+#include "gimp-intl.h"
+
+
+/* public functions */
+
+void
+gimp_drawable_bucket_fill (GimpDrawable *drawable,
+ GimpFillOptions *options,
+ gboolean fill_transparent,
+ GimpSelectCriterion fill_criterion,
+ gdouble threshold,
+ gboolean sample_merged,
+ gboolean diagonal_neighbors,
+ gdouble seed_x,
+ gdouble seed_y)
+{
+ GimpImage *image;
+ GeglBuffer *buffer;
+ gdouble mask_x;
+ gdouble mask_y;
+ gint width, height;
+
+ g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
+ g_return_if_fail (GIMP_IS_FILL_OPTIONS (options));
+
+ image = gimp_item_get_image (GIMP_ITEM (drawable));
+
+ gimp_set_busy (image->gimp);
+
+ buffer = gimp_drawable_get_bucket_fill_buffer (drawable, options,
+ fill_transparent, fill_criterion,
+ threshold, FALSE, sample_merged,
+ diagonal_neighbors,
+ seed_x, seed_y, NULL,
+ &mask_x, &mask_y, &width, &height);
+
+ if (buffer)
+ {
+ /* Apply it to the image */
+ gimp_drawable_apply_buffer (drawable, buffer,
+ GEGL_RECTANGLE (0, 0, width, height),
+ TRUE, C_("undo-type", "Bucket Fill"),
+ gimp_context_get_opacity (GIMP_CONTEXT (options)),
+ gimp_context_get_paint_mode (GIMP_CONTEXT (options)),
+ GIMP_LAYER_COLOR_SPACE_AUTO,
+ GIMP_LAYER_COLOR_SPACE_AUTO,
+ gimp_layer_mode_get_paint_composite_mode
+ (gimp_context_get_paint_mode (GIMP_CONTEXT (options))),
+ NULL, (gint) mask_x, mask_y);
+ g_object_unref (buffer);
+
+ gimp_drawable_update (drawable, mask_x, mask_y, width, height);
+ }
+
+ gimp_unset_busy (image->gimp);
+}
+
+/**
+ * gimp_drawable_get_bucket_fill_buffer:
+ * @drawable: the #GimpDrawable to edit.
+ * @options:
+ * @fill_transparent:
+ * @fill_criterion:
+ * @threshold:
+ * @show_all:
+ * @sample_merged:
+ * @diagonal_neighbors:
+ * @seed_x: X coordinate to start the fill.
+ * @seed_y: Y coordinate to start the fill.
+ * @mask_buffer: mask of the fill in-progress when in an interactive
+ * filling process. Set to NULL if you need a one-time
+ * fill.
+ * @mask_x: returned x bound of @mask_buffer.
+ * @mask_y: returned x bound of @mask_buffer.
+ * @mask_width: returned width bound of @mask_buffer.
+ * @mask_height: returned height bound of @mask_buffer.
+ *
+ * Creates the fill buffer for a bucket fill operation on @drawable,
+ * without actually applying it (if you want to apply it directly as a
+ * one-time operation, use gimp_drawable_bucket_fill() instead). If
+ * @mask_buffer is not NULL, the intermediate fill mask will also be
+ * returned. This fill mask can later be reused in successive calls to
+ * gimp_drawable_get_bucket_fill_buffer() for interactive filling.
+ *
+ * Returns: a fill buffer which can be directly applied to @drawable, or
+ * used in a drawable filter as preview.
+ */
+GeglBuffer *
+gimp_drawable_get_bucket_fill_buffer (GimpDrawable *drawable,
+ GimpFillOptions *options,
+ gboolean fill_transparent,
+ GimpSelectCriterion fill_criterion,
+ gdouble threshold,
+ gboolean show_all,
+ gboolean sample_merged,
+ gboolean diagonal_neighbors,
+ gdouble seed_x,
+ gdouble seed_y,
+ GeglBuffer **mask_buffer,
+ gdouble *mask_x,
+ gdouble *mask_y,
+ gint *mask_width,
+ gint *mask_height)
+{
+ GimpImage *image;
+ GimpPickable *pickable;
+ GeglBuffer *buffer;
+ GeglBuffer *new_mask;
+ gboolean antialias;
+ gint x, y, width, height;
+ gint mask_offset_x = 0;
+ gint mask_offset_y = 0;
+ gint sel_x, sel_y, sel_width, sel_height;
+
+ g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
+ g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
+ g_return_val_if_fail (GIMP_IS_FILL_OPTIONS (options), NULL);
+
+ image = gimp_item_get_image (GIMP_ITEM (drawable));
+
+ if (! gimp_item_mask_intersect (GIMP_ITEM (drawable),
+ &sel_x, &sel_y, &sel_width, &sel_height))
+ return NULL;
+
+ if (mask_buffer && *mask_buffer && threshold == 0.0)
+ {
+ gfloat pixel;
+
+ gegl_buffer_sample (*mask_buffer, seed_x, seed_y, NULL, &pixel,
+ babl_format ("Y float"),
+ GEGL_SAMPLER_NEAREST, GEGL_ABYSS_NONE);
+
+ if (pixel != 0.0)
+ /* Already selected. This seed won't change the selection. */
+ return NULL;
+ }
+
+ gimp_set_busy (image->gimp);
+
+ if (sample_merged)
+ {
+ if (! show_all)
+ pickable = GIMP_PICKABLE (image);
+ else
+ pickable = GIMP_PICKABLE (gimp_image_get_projection (image));
+ }
+ else
+ {
+ pickable = GIMP_PICKABLE (drawable);
+ }
+
+ antialias = gimp_fill_options_get_antialias (options);
+
+ /* Do a seed bucket fill...To do this, calculate a new
+ * contiguous region.
+ */
+ new_mask = gimp_pickable_contiguous_region_by_seed (pickable,
+ antialias,
+ threshold,
+ fill_transparent,
+ fill_criterion,
+ diagonal_neighbors,
+ (gint) seed_x,
+ (gint) seed_y);
+ if (mask_buffer && *mask_buffer)
+ {
+ gimp_gegl_mask_combine_buffer (new_mask, *mask_buffer,
+ GIMP_CHANNEL_OP_ADD, 0, 0);
+ g_object_unref (*mask_buffer);
+ }
+
+ if (mask_buffer)
+ *mask_buffer = new_mask;
+
+ gimp_gegl_mask_bounds (new_mask, &x, &y, &width, &height);
+ width -= x;
+ height -= y;
+
+ /* If there is a selection, intersect the region bounds
+ * with the selection bounds, to avoid processing areas
+ * that are going to be masked out anyway. The actual
+ * intersection of the fill region with the mask data
+ * happens when combining the fill buffer, in
+ * gimp_drawable_apply_buffer().
+ */
+ if (! gimp_channel_is_empty (gimp_image_get_mask (image)))
+ {
+ gint off_x = 0;
+ gint off_y = 0;
+
+ if (sample_merged)
+ gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
+
+ if (! gimp_rectangle_intersect (x, y, width, height,
+
+ sel_x + off_x, sel_y + off_y,
+ sel_width, sel_height,
+
+ &x, &y, &width, &height))
+ {
+ /* The fill region and the selection are disjoint; bail. */
+
+ if (! mask_buffer)
+ g_object_unref (new_mask);
+
+ gimp_unset_busy (image->gimp);
+
+ return NULL;
+ }
+ }
+
+ /* 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);
+
+ gimp_rectangle_intersect (x, y, width, height,
+
+ off_x, off_y,
+ gimp_item_get_width (item),
+ gimp_item_get_height (item),
+
+ &x, &y, &width, &height);
+
+ mask_offset_x = x;
+ mask_offset_y = y;
+
+ /* translate mask bounds to drawable coords */
+ x -= off_x;
+ y -= off_y;
+ }
+ else
+ {
+ mask_offset_x = x;
+ mask_offset_y = y;
+ }
+
+ buffer = gimp_fill_options_create_buffer (options, drawable,
+ GEGL_RECTANGLE (0, 0,
+ width, height),
+ -x, -y);
+
+ gimp_gegl_apply_opacity (buffer, NULL, NULL, buffer, new_mask,
+ -mask_offset_x, -mask_offset_y, 1.0);
+
+ if (mask_x)
+ *mask_x = x;
+ if (mask_y)
+ *mask_y = y;
+ if (mask_width)
+ *mask_width = width;
+ if (mask_height)
+ *mask_height = height;
+
+ if (! mask_buffer)
+ g_object_unref (new_mask);
+
+ gimp_unset_busy (image->gimp);
+
+ return buffer;
+}
+
+/**
+ * gimp_drawable_get_line_art_fill_buffer:
+ * @drawable: the #GimpDrawable to edit.
+ * @line_art: the #GimpLineArt computed as fill source.
+ * @options: the #GimpFillOptions.
+ * @sample_merged:
+ * @seed_x: X coordinate to start the fill.
+ * @seed_y: Y coordinate to start the fill.
+ * @mask_buffer: mask of the fill in-progress when in an interactive
+ * filling process. Set to NULL if you need a one-time
+ * fill.
+ * @mask_x: returned x bound of @mask_buffer.
+ * @mask_y: returned x bound of @mask_buffer.
+ * @mask_width: returned width bound of @mask_buffer.
+ * @mask_height: returned height bound of @mask_buffer.
+ *
+ * Creates the fill buffer for a bucket fill operation on @drawable
+ * based on @line_art and @options, without actually applying it.
+ * If @mask_buffer is not NULL, the intermediate fill mask will also be
+ * returned. This fill mask can later be reused in successive calls to
+ * gimp_drawable_get_bucket_fill_buffer() for interactive filling.
+ *
+ * Returns: a fill buffer which can be directly applied to @drawable, or
+ * used in a drawable filter as preview.
+ */
+GeglBuffer *
+gimp_drawable_get_line_art_fill_buffer (GimpDrawable *drawable,
+ GimpLineArt *line_art,
+ GimpFillOptions *options,
+ gboolean sample_merged,
+ gdouble seed_x,
+ gdouble seed_y,
+ GeglBuffer **mask_buffer,
+ gdouble *mask_x,
+ gdouble *mask_y,
+ gint *mask_width,
+ gint *mask_height)
+{
+ GimpImage *image;
+ GeglBuffer *buffer;
+ GeglBuffer *new_mask;
+ gint x, y, width, height;
+ gint mask_offset_x = 0;
+ gint mask_offset_y = 0;
+ gint sel_x, sel_y, sel_width, sel_height;
+ gdouble feather_radius;
+
+ g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
+ g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
+ g_return_val_if_fail (GIMP_IS_FILL_OPTIONS (options), NULL);
+
+ image = gimp_item_get_image (GIMP_ITEM (drawable));
+
+ if (! gimp_item_mask_intersect (GIMP_ITEM (drawable),
+ &sel_x, &sel_y, &sel_width, &sel_height))
+ return NULL;
+
+ if (mask_buffer && *mask_buffer)
+ {
+ gfloat pixel;
+
+ gegl_buffer_sample (*mask_buffer, seed_x, seed_y, NULL, &pixel,
+ babl_format ("Y float"),
+ GEGL_SAMPLER_NEAREST, GEGL_ABYSS_NONE);
+
+ if (pixel != 0.0)
+ /* Already selected. This seed won't change the selection. */
+ return NULL;
+ }
+
+ gimp_set_busy (image->gimp);
+
+ /* Do a seed bucket fill...To do this, calculate a new
+ * contiguous region.
+ */
+ new_mask = gimp_pickable_contiguous_region_by_line_art (NULL, line_art,
+ (gint) seed_x,
+ (gint) seed_y);
+ if (mask_buffer && *mask_buffer)
+ {
+ gimp_gegl_mask_combine_buffer (new_mask, *mask_buffer,
+ GIMP_CHANNEL_OP_ADD, 0, 0);
+ g_object_unref (*mask_buffer);
+ }
+ if (mask_buffer)
+ *mask_buffer = new_mask;
+
+ gimp_gegl_mask_bounds (new_mask, &x, &y, &width, &height);
+ width -= x;
+ height -= y;
+
+ /* If there is a selection, intersect the region bounds
+ * with the selection bounds, to avoid processing areas
+ * that are going to be masked out anyway. The actual
+ * intersection of the fill region with the mask data
+ * happens when combining the fill buffer, in
+ * gimp_drawable_apply_buffer().
+ */
+ if (! gimp_channel_is_empty (gimp_image_get_mask (image)))
+ {
+ gint off_x = 0;
+ gint off_y = 0;
+
+ if (sample_merged)
+ gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
+
+ if (! gimp_rectangle_intersect (x, y, width, height,
+
+ sel_x + off_x, sel_y + off_y,
+ sel_width, sel_height,
+
+ &x, &y, &width, &height))
+ {
+ if (! mask_buffer)
+ g_object_unref (new_mask);
+ /* The fill region and the selection are disjoint; bail. */
+ gimp_unset_busy (image->gimp);
+
+ return NULL;
+ }
+ }
+
+ /* 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);
+
+ gimp_rectangle_intersect (x, y, width, height,
+
+ off_x, off_y,
+ gimp_item_get_width (item),
+ gimp_item_get_height (item),
+
+ &x, &y, &width, &height);
+
+ mask_offset_x = x;
+ mask_offset_y = y;
+
+ /* translate mask bounds to drawable coords */
+ x -= off_x;
+ y -= off_y;
+ }
+ else
+ {
+ mask_offset_x = x;
+ mask_offset_y = y;
+ }
+
+ buffer = gimp_fill_options_create_buffer (options, drawable,
+ GEGL_RECTANGLE (0, 0,
+ width, height),
+ -x, -y);
+
+ gimp_gegl_apply_opacity (buffer, NULL, NULL, buffer, new_mask,
+ -mask_offset_x, -mask_offset_y, 1.0);
+
+ if (gimp_fill_options_get_feather (options, &feather_radius))
+ {
+ /* Feathering for the line art algorithm is not applied during
+ * mask creation because we just want to apply it on the borders
+ * of the mask at the end (since the mask can evolve, we don't
+ * want to actually touch it, but only the intermediate results).
+ */
+ gimp_gegl_apply_feather (buffer, NULL, NULL, buffer, NULL,
+ feather_radius, feather_radius, TRUE);
+ }
+
+ if (mask_x)
+ *mask_x = x;
+ if (mask_y)
+ *mask_y = y;
+ if (mask_width)
+ *mask_width = width;
+ if (mask_height)
+ *mask_height = height;
+
+ if (! mask_buffer)
+ g_object_unref (new_mask);
+
+ gimp_unset_busy (image->gimp);
+
+ return buffer;
+}
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