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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 <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "paint-types.h"
#include "gegl/gimp-gegl-utils.h"
#include "core/gimp.h"
#include "core/gimp-palettes.h"
#include "core/gimpdrawable.h"
#include "core/gimpdynamics.h"
#include "core/gimpimage.h"
#include "core/gimppickable.h"
#include "core/gimpsymmetry.h"
#include "gimperaser.h"
#include "gimperaseroptions.h"
#include "gimp-intl.h"
static gboolean gimp_eraser_get_color_history_color (GimpPaintbrush *paintbrush,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
GimpRGB *color);
static void gimp_eraser_get_paint_params (GimpPaintbrush *paintbrush,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
GimpSymmetry *sym,
gdouble grad_point,
GimpLayerMode *paint_mode,
GimpPaintApplicationMode *paint_appl_mode,
const GimpTempBuf **paint_pixmap,
GimpRGB *paint_color);
G_DEFINE_TYPE (GimpEraser, gimp_eraser, GIMP_TYPE_PAINTBRUSH)
void
gimp_eraser_register (Gimp *gimp,
GimpPaintRegisterCallback callback)
{
(* callback) (gimp,
GIMP_TYPE_ERASER,
GIMP_TYPE_ERASER_OPTIONS,
"gimp-eraser",
_("Eraser"),
"gimp-tool-eraser");
}
static void
gimp_eraser_class_init (GimpEraserClass *klass)
{
GimpPaintbrushClass *paintbrush_class = GIMP_PAINTBRUSH_CLASS (klass);
paintbrush_class->get_color_history_color = gimp_eraser_get_color_history_color;
paintbrush_class->get_paint_params = gimp_eraser_get_paint_params;
}
static void
gimp_eraser_init (GimpEraser *eraser)
{
}
static gboolean
gimp_eraser_get_color_history_color (GimpPaintbrush *paintbrush,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
GimpRGB *color)
{
/* Erasing on a drawable without alpha is equivalent to
* drawing with background color. So let's save history.
*/
if (! gimp_drawable_has_alpha (drawable))
{
GimpContext *context = GIMP_CONTEXT (paint_options);
gimp_context_get_background (context, color);
return TRUE;
}
return FALSE;
}
static void
gimp_eraser_get_paint_params (GimpPaintbrush *paintbrush,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
GimpSymmetry *sym,
gdouble grad_point,
GimpLayerMode *paint_mode,
GimpPaintApplicationMode *paint_appl_mode,
const GimpTempBuf **paint_pixmap,
GimpRGB *paint_color)
{
GimpEraserOptions *options = GIMP_ERASER_OPTIONS (paint_options);
GimpContext *context = GIMP_CONTEXT (paint_options);
gimp_context_get_background (context, paint_color);
gimp_pickable_srgb_to_image_color (GIMP_PICKABLE (drawable),
paint_color, paint_color);
if (options->anti_erase)
*paint_mode = GIMP_LAYER_MODE_ANTI_ERASE;
else if (gimp_drawable_has_alpha (drawable))
*paint_mode = GIMP_LAYER_MODE_ERASE;
else
*paint_mode = GIMP_LAYER_MODE_NORMAL_LEGACY;
}
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