604 lines
22 KiB
C
604 lines
22 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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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 <https://www.gnu.org/licenses/>.
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*/
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#include "config.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 "libpikabase/pikabase.h"
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#include "libpikacolor/pikacolor.h"
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#include "libpikaconfig/pikaconfig.h"
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#include "core-types.h"
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#include "config/pikadialogconfig.h"
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#include "gegl/pika-gegl-apply-operation.h"
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#include "gegl/pika-gegl-mask.h"
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#include "gegl/pika-gegl-mask-combine.h"
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#include "gegl/pika-gegl-utils.h"
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#include "operations/layer-modes/pika-layer-modes.h"
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#include "pika.h"
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#include "pikachannel.h"
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#include "pikadrawable.h"
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#include "pikadrawable-bucket-fill.h"
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#include "pikafilloptions.h"
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#include "pikastrokeoptions.h"
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#include "pikaimage.h"
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#include "pikalineart.h"
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#include "pikapickable.h"
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#include "pikapickable-contiguous-region.h"
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#include "pika-intl.h"
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/* public functions */
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void
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pika_drawable_bucket_fill (PikaDrawable *drawable,
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PikaFillOptions *options,
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gboolean fill_transparent,
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PikaSelectCriterion fill_criterion,
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gdouble threshold,
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gboolean sample_merged,
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gboolean diagonal_neighbors,
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gdouble seed_x,
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gdouble seed_y)
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{
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PikaImage *image;
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GeglBuffer *buffer;
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gdouble mask_x;
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gdouble mask_y;
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gint width, height;
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g_return_if_fail (PIKA_IS_DRAWABLE (drawable));
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g_return_if_fail (pika_item_is_attached (PIKA_ITEM (drawable)));
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g_return_if_fail (PIKA_IS_FILL_OPTIONS (options));
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image = pika_item_get_image (PIKA_ITEM (drawable));
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pika_set_busy (image->pika);
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buffer = pika_drawable_get_bucket_fill_buffer (drawable, options,
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fill_transparent, fill_criterion,
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threshold, FALSE, sample_merged,
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diagonal_neighbors,
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seed_x, seed_y, NULL,
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&mask_x, &mask_y, &width, &height);
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if (buffer)
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{
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/* Apply it to the image */
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pika_drawable_apply_buffer (drawable, buffer,
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GEGL_RECTANGLE (0, 0, width, height),
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TRUE, C_("undo-type", "Bucket Fill"),
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pika_context_get_opacity (PIKA_CONTEXT (options)),
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pika_context_get_paint_mode (PIKA_CONTEXT (options)),
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PIKA_LAYER_COLOR_SPACE_AUTO,
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PIKA_LAYER_COLOR_SPACE_AUTO,
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pika_layer_mode_get_paint_composite_mode
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(pika_context_get_paint_mode (PIKA_CONTEXT (options))),
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NULL, (gint) mask_x, mask_y);
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g_object_unref (buffer);
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pika_drawable_update (drawable, mask_x, mask_y, width, height);
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}
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pika_unset_busy (image->pika);
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}
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/**
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* pika_drawable_get_bucket_fill_buffer:
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* @drawable: the #PikaDrawable to edit.
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* @options:
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* @fill_transparent:
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* @fill_criterion:
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* @threshold:
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* @show_all:
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* @sample_merged:
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* @diagonal_neighbors:
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* @seed_x: X coordinate to start the fill.
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* @seed_y: Y coordinate to start the fill.
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* @mask_buffer: mask of the fill in-progress when in an interactive
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* filling process. Set to NULL if you need a one-time
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* fill.
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* @mask_x: returned x bound of @mask_buffer.
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* @mask_y: returned x bound of @mask_buffer.
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* @mask_width: returned width bound of @mask_buffer.
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* @mask_height: returned height bound of @mask_buffer.
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*
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* Creates the fill buffer for a bucket fill operation on @drawable,
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* without actually applying it (if you want to apply it directly as a
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* one-time operation, use pika_drawable_bucket_fill() instead). If
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* @mask_buffer is not NULL, the intermediate fill mask will also be
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* returned. This fill mask can later be reused in successive calls to
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* pika_drawable_get_bucket_fill_buffer() for interactive filling.
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*
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* Returns: a fill buffer which can be directly applied to @drawable, or
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* used in a drawable filter as preview.
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*/
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GeglBuffer *
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pika_drawable_get_bucket_fill_buffer (PikaDrawable *drawable,
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PikaFillOptions *options,
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gboolean fill_transparent,
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PikaSelectCriterion fill_criterion,
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gdouble threshold,
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gboolean show_all,
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gboolean sample_merged,
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gboolean diagonal_neighbors,
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gdouble seed_x,
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gdouble seed_y,
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GeglBuffer **mask_buffer,
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gdouble *mask_x,
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gdouble *mask_y,
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gint *mask_width,
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gint *mask_height)
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{
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PikaImage *image;
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PikaPickable *pickable;
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GeglBuffer *buffer;
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GeglBuffer *new_mask;
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gboolean antialias;
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gint x, y, width, height;
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gint mask_offset_x = 0;
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gint mask_offset_y = 0;
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gint sel_x, sel_y, sel_width, sel_height;
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g_return_val_if_fail (PIKA_IS_DRAWABLE (drawable), NULL);
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g_return_val_if_fail (pika_item_is_attached (PIKA_ITEM (drawable)), NULL);
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g_return_val_if_fail (PIKA_IS_FILL_OPTIONS (options), NULL);
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image = pika_item_get_image (PIKA_ITEM (drawable));
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if (! pika_item_mask_intersect (PIKA_ITEM (drawable),
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&sel_x, &sel_y, &sel_width, &sel_height))
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return NULL;
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if (mask_buffer && *mask_buffer && threshold == 0.0)
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{
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gfloat pixel;
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gegl_buffer_sample (*mask_buffer, seed_x, seed_y, NULL, &pixel,
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babl_format ("Y float"),
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GEGL_SAMPLER_NEAREST, GEGL_ABYSS_NONE);
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if (pixel != 0.0)
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/* Already selected. This seed won't change the selection. */
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return NULL;
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}
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pika_set_busy (image->pika);
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if (sample_merged)
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{
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if (! show_all)
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pickable = PIKA_PICKABLE (image);
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else
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pickable = PIKA_PICKABLE (pika_image_get_projection (image));
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}
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else
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{
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pickable = PIKA_PICKABLE (drawable);
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}
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antialias = pika_fill_options_get_antialias (options);
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/* Do a seed bucket fill...To do this, calculate a new
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* contiguous region.
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*/
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new_mask = pika_pickable_contiguous_region_by_seed (pickable,
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antialias,
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threshold,
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fill_transparent,
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fill_criterion,
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diagonal_neighbors,
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(gint) seed_x,
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(gint) seed_y);
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if (mask_buffer && *mask_buffer)
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{
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pika_gegl_mask_combine_buffer (new_mask, *mask_buffer,
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PIKA_CHANNEL_OP_ADD, 0, 0);
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g_object_unref (*mask_buffer);
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}
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if (mask_buffer)
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*mask_buffer = new_mask;
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pika_gegl_mask_bounds (new_mask, &x, &y, &width, &height);
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width -= x;
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height -= y;
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/* If there is a selection, intersect the region bounds
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* with the selection bounds, to avoid processing areas
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* that are going to be masked out anyway. The actual
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* intersection of the fill region with the mask data
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* happens when combining the fill buffer, in
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* pika_drawable_apply_buffer().
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*/
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if (! pika_channel_is_empty (pika_image_get_mask (image)))
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{
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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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pika_item_get_offset (PIKA_ITEM (drawable), &off_x, &off_y);
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if (! pika_rectangle_intersect (x, y, width, height,
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sel_x + off_x, sel_y + off_y,
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sel_width, sel_height,
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&x, &y, &width, &height))
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{
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/* The fill region and the selection are disjoint; bail. */
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if (! mask_buffer)
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g_object_unref (new_mask);
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pika_unset_busy (image->pika);
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return NULL;
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}
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}
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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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PikaItem *item = PIKA_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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pika_item_get_offset (item, &off_x, &off_y);
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pika_rectangle_intersect (x, y, width, height,
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off_x, off_y,
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pika_item_get_width (item),
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pika_item_get_height (item),
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&x, &y, &width, &height);
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mask_offset_x = x;
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mask_offset_y = y;
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/* translate mask bounds to drawable coords */
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x -= off_x;
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y -= off_y;
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}
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else
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{
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mask_offset_x = x;
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mask_offset_y = y;
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}
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buffer = pika_fill_options_create_buffer (options, drawable,
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GEGL_RECTANGLE (0, 0,
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width, height),
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-x, -y);
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pika_gegl_apply_opacity (buffer, NULL, NULL, buffer, new_mask,
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-mask_offset_x, -mask_offset_y, 1.0);
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if (mask_x)
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*mask_x = x;
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if (mask_y)
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*mask_y = y;
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if (mask_width)
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*mask_width = width;
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if (mask_height)
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*mask_height = height;
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if (! mask_buffer)
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g_object_unref (new_mask);
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pika_unset_busy (image->pika);
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return buffer;
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}
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/**
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* pika_drawable_get_line_art_fill_buffer:
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* @drawable: the #PikaDrawable to edit.
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* @line_art: the #PikaLineArt computed as fill source.
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* @options: the #PikaFillOptions.
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* @sample_merged:
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* @fill_color_as_line_art: do we add pixels in @drawable filled with
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* fill color to the line art?
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* @fill_color_threshold: threshold value to determine fill color.
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* @seed_x: X coordinate to start the fill.
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* @seed_y: Y coordinate to start the fill.
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* @mask_buffer: mask of the fill in-progress when in an interactive
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* filling process. Set to NULL if you need a one-time
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* fill.
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* @mask_x: returned x bound of @mask_buffer.
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* @mask_y: returned y bound of @mask_buffer.
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* @mask_width: returned width bound of @mask_buffer.
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* @mask_height: returned height bound of @mask_buffer.
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*
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* Creates the fill buffer for a bucket fill operation on @drawable
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* based on @line_art and @options, without actually applying it.
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* If @mask_buffer is not NULL, the intermediate fill mask will also be
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* returned. This fill mask can later be reused in successive calls to
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* pika_drawable_get_line_art_fill_buffer() for interactive filling.
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*
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* The @fill_color_as_line_art option is a special feature where we
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* consider pixels in @drawable already in the fill color as part of the
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* line art. This is a post-process, i.e. that this is not taken into
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* account while @line_art is computed, making this a fast addition
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* processing allowing to close some area manually.
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*
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* Returns: a fill buffer which can be directly applied to @drawable, or
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* used in a drawable filter as preview.
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*/
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GeglBuffer *
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pika_drawable_get_line_art_fill_buffer (PikaDrawable *drawable,
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PikaLineArt *line_art,
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PikaFillOptions *options,
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gboolean sample_merged,
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gboolean fill_color_as_line_art,
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gdouble fill_color_threshold,
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gboolean line_art_stroke,
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PikaStrokeOptions *stroke_options,
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gdouble seed_x,
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gdouble seed_y,
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GeglBuffer **mask_buffer,
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gdouble *mask_x,
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gdouble *mask_y,
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gint *mask_width,
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gint *mask_height)
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{
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PikaImage *image;
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GeglBuffer *buffer;
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GeglBuffer *new_mask;
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GeglBuffer *rendered_mask;
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GeglBuffer *fill_buffer = NULL;
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PikaRGB fill_color;
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gint fill_offset_x = 0;
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gint fill_offset_y = 0;
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gint x, y, width, height;
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gint mask_offset_x = 0;
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gint mask_offset_y = 0;
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gint sel_x, sel_y, sel_width, sel_height;
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gdouble feather_radius;
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g_return_val_if_fail (PIKA_IS_DRAWABLE (drawable), NULL);
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g_return_val_if_fail (pika_item_is_attached (PIKA_ITEM (drawable)), NULL);
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g_return_val_if_fail (PIKA_IS_FILL_OPTIONS (options), NULL);
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image = pika_item_get_image (PIKA_ITEM (drawable));
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if (! pika_item_mask_intersect (PIKA_ITEM (drawable),
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&sel_x, &sel_y, &sel_width, &sel_height))
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return NULL;
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if (mask_buffer && *mask_buffer)
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{
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gfloat pixel;
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gegl_buffer_sample (*mask_buffer, seed_x, seed_y, NULL, &pixel,
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babl_format ("Y float"),
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GEGL_SAMPLER_NEAREST, GEGL_ABYSS_NONE);
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if (pixel != 0.0)
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/* Already selected. This seed won't change the selection. */
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return NULL;
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}
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pika_set_busy (image->pika);
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/* Do a seed bucket fill...To do this, calculate a new
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* contiguous region.
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*/
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if (fill_color_as_line_art)
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{
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PikaPickable *pickable = pika_line_art_get_input (line_art);
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/* This cannot be a pattern fill. */
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g_return_val_if_fail (pika_fill_options_get_style (options) != PIKA_FILL_STYLE_PATTERN,
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NULL);
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/* Meaningful only in above/below layer cases. */
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g_return_val_if_fail (PIKA_IS_DRAWABLE (pickable), NULL);
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if (pika_fill_options_get_style (options) == PIKA_FILL_STYLE_FG_COLOR)
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pika_context_get_foreground (PIKA_CONTEXT (options), &fill_color);
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else if (pika_fill_options_get_style (options) == PIKA_FILL_STYLE_BG_COLOR)
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pika_context_get_background (PIKA_CONTEXT (options), &fill_color);
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fill_buffer = pika_drawable_get_buffer (drawable);
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fill_offset_x = pika_item_get_offset_x (PIKA_ITEM (drawable)) -
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pika_item_get_offset_x (PIKA_ITEM (pickable));
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fill_offset_y = pika_item_get_offset_y (PIKA_ITEM (drawable)) -
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pika_item_get_offset_y (PIKA_ITEM (pickable));
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}
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new_mask = pika_pickable_contiguous_region_by_line_art (NULL, line_art,
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fill_buffer,
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&fill_color,
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fill_color_threshold,
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fill_offset_x,
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fill_offset_y,
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(gint) seed_x,
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(gint) seed_y);
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if (mask_buffer && *mask_buffer)
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{
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pika_gegl_mask_combine_buffer (new_mask, *mask_buffer,
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PIKA_CHANNEL_OP_ADD, 0, 0);
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g_object_unref (*mask_buffer);
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}
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if (mask_buffer)
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*mask_buffer = new_mask;
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rendered_mask = pika_gegl_buffer_dup (new_mask);
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if (pika_fill_options_get_feather (options, &feather_radius))
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{
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/* Feathering for the line art algorithm is not applied during
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* mask creation because we just want to apply it on the borders
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* of the mask at the end (since the mask can evolve, we don't
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* want to actually touch the mask, but only the intermediate
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* rendered results).
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*/
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pika_gegl_apply_feather (rendered_mask, NULL, NULL, rendered_mask, NULL,
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feather_radius, feather_radius, TRUE);
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}
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if (line_art_stroke)
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{
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/* Similarly to feathering, stroke only happens on the rendered
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* result, not on the returned mask.
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*/
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PikaChannel *channel;
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PikaChannel *stroked;
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GList *drawables;
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PikaContext *context = pika_get_user_context (image->pika);
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GError *error = NULL;
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const PikaRGB white = {1.0, 1.0, 1.0, 1.0};
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context = pika_config_duplicate (PIKA_CONFIG (context));
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/* As we are stroking a mask, we need to set color to white. */
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pika_context_set_foreground (PIKA_CONTEXT (context),
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&white);
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channel = pika_channel_new_from_buffer (image, new_mask, NULL, NULL);
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stroked = pika_channel_new_from_buffer (image, rendered_mask, NULL, NULL);
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pika_image_add_hidden_item (image, PIKA_ITEM (channel));
|
|
pika_image_add_hidden_item (image, PIKA_ITEM (stroked));
|
|
drawables = g_list_prepend (NULL, stroked);
|
|
|
|
if (! pika_item_stroke (PIKA_ITEM (channel), drawables,
|
|
context,
|
|
stroke_options,
|
|
NULL, FALSE, NULL, &error))
|
|
{
|
|
g_warning ("%s: stroking failed with: %s\n",
|
|
G_STRFUNC, error ? error->message : "no error message");
|
|
g_clear_error (&error);
|
|
}
|
|
|
|
g_list_free (drawables);
|
|
|
|
pika_pickable_flush (PIKA_PICKABLE (stroked));
|
|
g_object_unref (rendered_mask);
|
|
rendered_mask = pika_drawable_get_buffer (PIKA_DRAWABLE (stroked));
|
|
g_object_ref (rendered_mask);
|
|
|
|
pika_image_remove_hidden_item (image, PIKA_ITEM (channel));
|
|
g_object_unref (channel);
|
|
pika_image_remove_hidden_item (image, PIKA_ITEM (stroked));
|
|
g_object_unref (stroked);
|
|
|
|
g_object_unref (context);
|
|
}
|
|
|
|
pika_gegl_mask_bounds (rendered_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
|
|
* pika_drawable_apply_buffer().
|
|
*/
|
|
if (! pika_channel_is_empty (pika_image_get_mask (image)))
|
|
{
|
|
gint off_x = 0;
|
|
gint off_y = 0;
|
|
|
|
if (sample_merged)
|
|
pika_item_get_offset (PIKA_ITEM (drawable), &off_x, &off_y);
|
|
|
|
if (! pika_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. */
|
|
pika_unset_busy (image->pika);
|
|
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* make sure we handle the mask correctly if it was sample-merged */
|
|
if (sample_merged)
|
|
{
|
|
PikaItem *item = PIKA_ITEM (drawable);
|
|
gint off_x, off_y;
|
|
|
|
/* Limit the channel bounds to the drawable's extents */
|
|
pika_item_get_offset (item, &off_x, &off_y);
|
|
|
|
pika_rectangle_intersect (x, y, width, height,
|
|
|
|
off_x, off_y,
|
|
pika_item_get_width (item),
|
|
pika_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 = pika_fill_options_create_buffer (options, drawable,
|
|
GEGL_RECTANGLE (0, 0,
|
|
width, height),
|
|
-x, -y);
|
|
|
|
pika_gegl_apply_opacity (buffer, NULL, NULL, buffer, rendered_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);
|
|
|
|
g_object_unref (rendered_mask);
|
|
|
|
pika_unset_busy (image->pika);
|
|
|
|
return buffer;
|
|
}
|
