287 lines
9.7 KiB
C
287 lines
9.7 KiB
C
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/* 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 <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "libpikacolor/pikacolor.h"
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#include "core-types.h"
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#include "gegl/pika-babl.h"
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#include "gegl/pika-gegl-apply-operation.h"
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#include "gegl/pika-gegl-loops.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-utils.h"
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#include "pikabezierdesc.h"
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#include "pikachannel.h"
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#include "pikadrawable-fill.h"
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#include "pikaerror.h"
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#include "pikafilloptions.h"
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#include "pikaimage.h"
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#include "pikapattern.h"
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#include "pikapickable.h"
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#include "pikascanconvert.h"
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#include "vectors/pikavectors.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_fill (PikaDrawable *drawable,
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PikaContext *context,
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PikaFillType fill_type)
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{
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PikaRGB color;
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PikaPattern *pattern;
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g_return_if_fail (PIKA_IS_DRAWABLE (drawable));
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g_return_if_fail (PIKA_IS_CONTEXT (context));
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if (fill_type == PIKA_FILL_TRANSPARENT &&
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! pika_drawable_has_alpha (drawable))
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{
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fill_type = PIKA_FILL_BACKGROUND;
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}
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if (! pika_get_fill_params (context, fill_type, &color, &pattern, NULL))
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return;
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pika_drawable_fill_buffer (drawable,
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pika_drawable_get_buffer (drawable),
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&color, pattern, 0, 0);
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pika_drawable_update (drawable, 0, 0, -1, -1);
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}
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void
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pika_drawable_fill_buffer (PikaDrawable *drawable,
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GeglBuffer *buffer,
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const PikaRGB *color,
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PikaPattern *pattern,
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gint pattern_offset_x,
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gint pattern_offset_y)
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{
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g_return_if_fail (PIKA_IS_DRAWABLE (drawable));
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g_return_if_fail (GEGL_IS_BUFFER (buffer));
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g_return_if_fail (color != NULL || pattern != NULL);
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g_return_if_fail (pattern == NULL || PIKA_IS_PATTERN (pattern));
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if (pattern)
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{
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GeglBuffer *src_buffer;
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GeglBuffer *dest_buffer;
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PikaColorProfile *src_profile;
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PikaColorProfile *dest_profile;
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src_buffer = pika_pattern_create_buffer (pattern);
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src_profile = pika_babl_format_get_color_profile (
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gegl_buffer_get_format (src_buffer));
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dest_profile = pika_color_managed_get_color_profile (
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PIKA_COLOR_MANAGED (drawable));
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if (pika_color_transform_can_gegl_copy (src_profile, dest_profile))
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{
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dest_buffer = g_object_ref (src_buffer);
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}
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else
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{
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dest_buffer = gegl_buffer_new (gegl_buffer_get_extent (src_buffer),
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gegl_buffer_get_format (buffer));
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pika_gegl_convert_color_profile (
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src_buffer, NULL, src_profile,
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dest_buffer, NULL, dest_profile,
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PIKA_COLOR_RENDERING_INTENT_PERCEPTUAL,
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TRUE,
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NULL);
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}
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g_object_unref (src_profile);
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gegl_buffer_set_pattern (buffer, NULL, dest_buffer,
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pattern_offset_x, pattern_offset_y);
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g_object_unref (src_buffer);
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g_object_unref (dest_buffer);
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}
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else
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{
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PikaRGB image_color;
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GeglColor *gegl_color;
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pika_pickable_srgb_to_image_color (PIKA_PICKABLE (drawable),
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color, &image_color);
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if (! pika_drawable_has_alpha (drawable))
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pika_rgb_set_alpha (&image_color, 1.0);
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gegl_color = pika_gegl_color_new (&image_color,
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pika_drawable_get_space (drawable));
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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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}
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void
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pika_drawable_fill_boundary (PikaDrawable *drawable,
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PikaFillOptions *options,
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const PikaBoundSeg *bound_segs,
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gint n_bound_segs,
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gint offset_x,
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gint offset_y,
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gboolean push_undo)
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{
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PikaScanConvert *scan_convert;
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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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g_return_if_fail (bound_segs == NULL || n_bound_segs != 0);
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g_return_if_fail (pika_fill_options_get_style (options) !=
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PIKA_FILL_STYLE_PATTERN ||
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pika_context_get_pattern (PIKA_CONTEXT (options)) != NULL);
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scan_convert = pika_scan_convert_new_from_boundary (bound_segs, n_bound_segs,
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offset_x, offset_y);
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if (scan_convert)
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{
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pika_drawable_fill_scan_convert (drawable, options,
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scan_convert, push_undo);
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pika_scan_convert_free (scan_convert);
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}
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}
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gboolean
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pika_drawable_fill_vectors (PikaDrawable *drawable,
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PikaFillOptions *options,
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PikaVectors *vectors,
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gboolean push_undo,
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GError **error)
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{
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const PikaBezierDesc *bezier;
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g_return_val_if_fail (PIKA_IS_DRAWABLE (drawable), FALSE);
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g_return_val_if_fail (pika_item_is_attached (PIKA_ITEM (drawable)), FALSE);
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g_return_val_if_fail (PIKA_IS_FILL_OPTIONS (options), FALSE);
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g_return_val_if_fail (PIKA_IS_VECTORS (vectors), FALSE);
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g_return_val_if_fail (pika_fill_options_get_style (options) !=
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PIKA_FILL_STYLE_PATTERN ||
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pika_context_get_pattern (PIKA_CONTEXT (options)) != NULL,
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FALSE);
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g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
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bezier = pika_vectors_get_bezier (vectors);
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if (bezier && bezier->num_data > 4)
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{
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PikaScanConvert *scan_convert = pika_scan_convert_new ();
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pika_scan_convert_add_bezier (scan_convert, bezier);
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pika_drawable_fill_scan_convert (drawable, options,
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scan_convert, push_undo);
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pika_scan_convert_free (scan_convert);
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return TRUE;
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}
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g_set_error_literal (error, PIKA_ERROR, PIKA_FAILED,
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_("Not enough points to fill"));
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return FALSE;
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}
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void
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pika_drawable_fill_scan_convert (PikaDrawable *drawable,
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PikaFillOptions *options,
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PikaScanConvert *scan_convert,
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gboolean push_undo)
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{
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PikaContext *context;
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GeglBuffer *buffer;
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GeglBuffer *mask_buffer;
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gint x, y, w, h;
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gint off_x;
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gint off_y;
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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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g_return_if_fail (scan_convert != NULL);
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g_return_if_fail (pika_fill_options_get_style (options) !=
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PIKA_FILL_STYLE_PATTERN ||
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pika_context_get_pattern (PIKA_CONTEXT (options)) != NULL);
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context = PIKA_CONTEXT (options);
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if (! pika_item_mask_intersect (PIKA_ITEM (drawable), &x, &y, &w, &h))
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return;
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/* fill a 1-bpp GeglBuffer with black, this will describe the shape
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* of the stroke.
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*/
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mask_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, w, h),
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babl_format ("Y u8"));
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/* render the stroke into it */
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pika_item_get_offset (PIKA_ITEM (drawable), &off_x, &off_y);
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pika_scan_convert_render (scan_convert, mask_buffer,
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x + off_x, y + off_y,
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pika_fill_options_get_antialias (options));
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buffer = pika_fill_options_create_buffer (options, drawable,
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GEGL_RECTANGLE (0, 0, w, h),
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-x, -y);
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pika_gegl_apply_opacity (buffer, NULL, NULL, buffer,
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mask_buffer, 0, 0, 1.0);
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g_object_unref (mask_buffer);
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/* Apply to drawable */
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pika_drawable_apply_buffer (drawable, buffer,
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GEGL_RECTANGLE (0, 0, w, h),
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push_undo, C_("undo-type", "Render Stroke"),
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pika_context_get_opacity (context),
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pika_context_get_paint_mode (context),
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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 (context)),
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NULL, x, y);
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g_object_unref (buffer);
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pika_drawable_update (drawable, x, y, w, h);
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}
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