PIKApp/app/tools/pikabycolorselecttool.c

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2023-09-26 00:35:21 +02:00
/* 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
*
* pikabycolorselecttool.c
*
* 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 <string.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libpikacolor/pikacolor.h"
#include "libpikawidgets/pikawidgets.h"
#include "tools-types.h"
#include "core/pika.h"
#include "core/pikacontainer.h"
#include "core/pikaimage.h"
#include "core/pikaimage-new.h"
#include "core/pikaitem.h"
#include "core/pikapickable.h"
#include "core/pikapickable-contiguous-region.h"
#include "widgets/pikahelp-ids.h"
#include "display/pikadisplay.h"
#include "pikabycolorselecttool.h"
#include "pikaregionselectoptions.h"
#include "pikatoolcontrol.h"
#include "pika-intl.h"
static GeglBuffer * pika_by_color_select_tool_get_mask (PikaRegionSelectTool *region_select,
PikaDisplay *display);
G_DEFINE_TYPE (PikaByColorSelectTool, pika_by_color_select_tool,
PIKA_TYPE_REGION_SELECT_TOOL)
#define parent_class pika_by_color_select_tool_parent_class
void
pika_by_color_select_tool_register (PikaToolRegisterCallback callback,
gpointer data)
{
(* callback) (PIKA_TYPE_BY_COLOR_SELECT_TOOL,
PIKA_TYPE_REGION_SELECT_OPTIONS,
pika_region_select_options_gui,
0,
"pika-by-color-select-tool",
_("Select by Color"),
_("Select by Color Tool: Select regions with similar colors"),
N_("_By Color Select"), "<shift>O",
NULL, PIKA_HELP_TOOL_BY_COLOR_SELECT,
PIKA_ICON_TOOL_BY_COLOR_SELECT,
data);
}
static void
pika_by_color_select_tool_class_init (PikaByColorSelectToolClass *klass)
{
PikaRegionSelectToolClass *region_class;
region_class = PIKA_REGION_SELECT_TOOL_CLASS (klass);
region_class->undo_desc = C_("command", "Select by Color");
region_class->get_mask = pika_by_color_select_tool_get_mask;
}
static void
pika_by_color_select_tool_init (PikaByColorSelectTool *by_color_select)
{
PikaTool *tool = PIKA_TOOL (by_color_select);
pika_tool_control_set_tool_cursor (tool->control, PIKA_TOOL_CURSOR_HAND);
}
static GeglBuffer *
pika_by_color_select_tool_get_mask (PikaRegionSelectTool *region_select,
PikaDisplay *display)
{
PikaTool *tool = PIKA_TOOL (region_select);
PikaSelectionOptions *sel_options = PIKA_SELECTION_TOOL_GET_OPTIONS (tool);
PikaRegionSelectOptions *options = PIKA_REGION_SELECT_TOOL_GET_OPTIONS (tool);
PikaImage *image = pika_display_get_image (display);
PikaImage *select_image = NULL;
GList *drawables = pika_image_get_selected_drawables (image);
PikaPickable *pickable;
GeglBuffer *mask = NULL;
PikaRGB srgb;
gint x, y;
x = region_select->x;
y = region_select->y;
if (! options->sample_merged)
{
if (g_list_length (drawables) == 1)
{
gint off_x, off_y;
pika_item_get_offset (drawables->data, &off_x, &off_y);
x -= off_x;
y -= off_y;
pickable = PIKA_PICKABLE (drawables->data);
}
else
{
select_image = pika_image_new_from_drawables (image->pika, drawables, FALSE, FALSE);
pika_container_remove (image->pika->images, PIKA_OBJECT (select_image));
pickable = PIKA_PICKABLE (select_image);
pika_pickable_flush (pickable);
}
}
else
{
pickable = PIKA_PICKABLE (image);
}
g_list_free (drawables);
pika_pickable_flush (pickable);
if (pika_pickable_get_color_at (pickable, x, y, &srgb))
{
PikaRGB color;
pika_pickable_srgb_to_image_color (pickable, &srgb, &color);
mask = pika_pickable_contiguous_region_by_color (pickable,
sel_options->antialias,
options->threshold / 255.0,
options->select_transparent,
options->select_criterion,
&color);
}
if (select_image)
g_object_unref (select_image);
return mask;
}