AlderconeStudio/PIKApp
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PIKApp/app/core/pikadrawable-fill.c

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/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* 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>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "libpikacolor/pikacolor.h"
#include "core-types.h"
#include "gegl/pika-babl.h"
#include "gegl/pika-gegl-apply-operation.h"
#include "gegl/pika-gegl-loops.h"
#include "gegl/pika-gegl-utils.h"
#include "operations/layer-modes/pika-layer-modes.h"
#include "pika-utils.h"
#include "pikabezierdesc.h"
#include "pikachannel.h"
#include "pikadrawable-fill.h"
#include "pikaerror.h"
#include "pikafilloptions.h"
#include "pikaimage.h"
#include "pikapattern.h"
#include "pikapickable.h"
#include "pikascanconvert.h"
#include "vectors/pikavectors.h"
#include "pika-intl.h"
/* public functions */
void
pika_drawable_fill (PikaDrawable *drawable,
PikaContext *context,
PikaFillType fill_type)
{
PikaRGB color;
PikaPattern *pattern;
g_return_if_fail (PIKA_IS_DRAWABLE (drawable));
g_return_if_fail (PIKA_IS_CONTEXT (context));
if (fill_type == PIKA_FILL_TRANSPARENT &&
! pika_drawable_has_alpha (drawable))
{
fill_type = PIKA_FILL_BACKGROUND;
}
if (! pika_get_fill_params (context, fill_type, &color, &pattern, NULL))
return;
pika_drawable_fill_buffer (drawable,
pika_drawable_get_buffer (drawable),
&color, pattern, 0, 0);
pika_drawable_update (drawable, 0, 0, -1, -1);
}
void
pika_drawable_fill_buffer (PikaDrawable *drawable,
GeglBuffer *buffer,
const PikaRGB *color,
PikaPattern *pattern,
gint pattern_offset_x,
gint pattern_offset_y)
{
g_return_if_fail (PIKA_IS_DRAWABLE (drawable));
g_return_if_fail (GEGL_IS_BUFFER (buffer));
g_return_if_fail (color != NULL || pattern != NULL);
g_return_if_fail (pattern == NULL || PIKA_IS_PATTERN (pattern));
if (pattern)
{
GeglBuffer *src_buffer;
GeglBuffer *dest_buffer;
PikaColorProfile *src_profile;
PikaColorProfile *dest_profile;
src_buffer = pika_pattern_create_buffer (pattern);
src_profile = pika_babl_format_get_color_profile (
gegl_buffer_get_format (src_buffer));
dest_profile = pika_color_managed_get_color_profile (
PIKA_COLOR_MANAGED (drawable));
if (pika_color_transform_can_gegl_copy (src_profile, dest_profile))
{
dest_buffer = g_object_ref (src_buffer);
}
else
{
dest_buffer = gegl_buffer_new (gegl_buffer_get_extent (src_buffer),
gegl_buffer_get_format (buffer));
pika_gegl_convert_color_profile (
src_buffer, NULL, src_profile,
dest_buffer, NULL, dest_profile,
PIKA_COLOR_RENDERING_INTENT_PERCEPTUAL,
TRUE,
NULL);
}
g_object_unref (src_profile);
gegl_buffer_set_pattern (buffer, NULL, dest_buffer,
pattern_offset_x, pattern_offset_y);
g_object_unref (src_buffer);
g_object_unref (dest_buffer);
}
else
{
PikaRGB image_color;
GeglColor *gegl_color;
pika_pickable_srgb_to_image_color (PIKA_PICKABLE (drawable),
color, &image_color);
if (! pika_drawable_has_alpha (drawable))
pika_rgb_set_alpha (&image_color, 1.0);
gegl_color = pika_gegl_color_new (&image_color,
pika_drawable_get_space (drawable));
gegl_buffer_set_color (buffer, NULL, gegl_color);
g_object_unref (gegl_color);
}
}
void
pika_drawable_fill_boundary (PikaDrawable *drawable,
PikaFillOptions *options,
const PikaBoundSeg *bound_segs,
gint n_bound_segs,
gint offset_x,
gint offset_y,
gboolean push_undo)
{
PikaScanConvert *scan_convert;
g_return_if_fail (PIKA_IS_DRAWABLE (drawable));
g_return_if_fail (pika_item_is_attached (PIKA_ITEM (drawable)));
g_return_if_fail (PIKA_IS_FILL_OPTIONS (options));
g_return_if_fail (bound_segs == NULL || n_bound_segs != 0);
g_return_if_fail (pika_fill_options_get_style (options) !=
PIKA_FILL_STYLE_PATTERN ||
pika_context_get_pattern (PIKA_CONTEXT (options)) != NULL);
scan_convert = pika_scan_convert_new_from_boundary (bound_segs, n_bound_segs,
offset_x, offset_y);
if (scan_convert)
{
pika_drawable_fill_scan_convert (drawable, options,
scan_convert, push_undo);
pika_scan_convert_free (scan_convert);
}
}
gboolean
pika_drawable_fill_vectors (PikaDrawable *drawable,
PikaFillOptions *options,
PikaVectors *vectors,
gboolean push_undo,
GError **error)
{
const PikaBezierDesc *bezier;
g_return_val_if_fail (PIKA_IS_DRAWABLE (drawable), FALSE);
g_return_val_if_fail (pika_item_is_attached (PIKA_ITEM (drawable)), FALSE);
g_return_val_if_fail (PIKA_IS_FILL_OPTIONS (options), FALSE);
g_return_val_if_fail (PIKA_IS_VECTORS (vectors), FALSE);
g_return_val_if_fail (pika_fill_options_get_style (options) !=
PIKA_FILL_STYLE_PATTERN ||
pika_context_get_pattern (PIKA_CONTEXT (options)) != NULL,
FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
bezier = pika_vectors_get_bezier (vectors);
if (bezier && bezier->num_data > 4)
{
PikaScanConvert *scan_convert = pika_scan_convert_new ();
pika_scan_convert_add_bezier (scan_convert, bezier);
pika_drawable_fill_scan_convert (drawable, options,
scan_convert, push_undo);
pika_scan_convert_free (scan_convert);
return TRUE;
}
g_set_error_literal (error, PIKA_ERROR, PIKA_FAILED,
_("Not enough points to fill"));
return FALSE;
}
void
pika_drawable_fill_scan_convert (PikaDrawable *drawable,
PikaFillOptions *options,
PikaScanConvert *scan_convert,
gboolean push_undo)
{
PikaContext *context;
GeglBuffer *buffer;
GeglBuffer *mask_buffer;
gint x, y, w, h;
gint off_x;
gint off_y;
g_return_if_fail (PIKA_IS_DRAWABLE (drawable));
g_return_if_fail (pika_item_is_attached (PIKA_ITEM (drawable)));
g_return_if_fail (PIKA_IS_FILL_OPTIONS (options));
g_return_if_fail (scan_convert != NULL);
g_return_if_fail (pika_fill_options_get_style (options) !=
PIKA_FILL_STYLE_PATTERN ||
pika_context_get_pattern (PIKA_CONTEXT (options)) != NULL);
context = PIKA_CONTEXT (options);
if (! pika_item_mask_intersect (PIKA_ITEM (drawable), &x, &y, &w, &h))
return;
/* fill a 1-bpp GeglBuffer with black, this will describe the shape
* of the stroke.
*/
mask_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, w, h),
babl_format ("Y u8"));
/* render the stroke into it */
pika_item_get_offset (PIKA_ITEM (drawable), &off_x, &off_y);
pika_scan_convert_render (scan_convert, mask_buffer,
x + off_x, y + off_y,
pika_fill_options_get_antialias (options));
buffer = pika_fill_options_create_buffer (options, drawable,
GEGL_RECTANGLE (0, 0, w, h),
-x, -y);
pika_gegl_apply_opacity (buffer, NULL, NULL, buffer,
mask_buffer, 0, 0, 1.0);
g_object_unref (mask_buffer);
/* Apply to drawable */
pika_drawable_apply_buffer (drawable, buffer,
GEGL_RECTANGLE (0, 0, w, h),
push_undo, C_("undo-type", "Render Stroke"),
pika_context_get_opacity (context),
pika_context_get_paint_mode (context),
PIKA_LAYER_COLOR_SPACE_AUTO,
PIKA_LAYER_COLOR_SPACE_AUTO,
pika_layer_mode_get_paint_composite_mode (
pika_context_get_paint_mode (context)),
NULL, x, y);
g_object_unref (buffer);
pika_drawable_update (drawable, x, y, w, h);
}
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