gimp/app/paint/gimppaintcoreundo.c

181 lines
6.2 KiB
C

/* 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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <glib-object.h>
#include "paint-types.h"
#include "gimppaintcore.h"
#include "gimppaintcoreundo.h"
enum
{
PROP_0,
PROP_PAINT_CORE
};
static GObject * gimp_paint_core_undo_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static void gimp_paint_core_undo_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_paint_core_undo_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_paint_core_undo_pop (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void gimp_paint_core_undo_free (GimpUndo *undo,
GimpUndoMode undo_mode);
G_DEFINE_TYPE (GimpPaintCoreUndo, gimp_paint_core_undo, GIMP_TYPE_UNDO)
#define parent_class gimp_paint_core_undo_parent_class
static void
gimp_paint_core_undo_class_init (GimpPaintCoreUndoClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpUndoClass *undo_class = GIMP_UNDO_CLASS (klass);
object_class->constructor = gimp_paint_core_undo_constructor;
object_class->set_property = gimp_paint_core_undo_set_property;
object_class->get_property = gimp_paint_core_undo_get_property;
undo_class->pop = gimp_paint_core_undo_pop;
undo_class->free = gimp_paint_core_undo_free;
g_object_class_install_property (object_class, PROP_PAINT_CORE,
g_param_spec_object ("paint-core", NULL, NULL,
GIMP_TYPE_PAINT_CORE,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
gimp_paint_core_undo_init (GimpPaintCoreUndo *undo)
{
}
static GObject *
gimp_paint_core_undo_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpPaintCoreUndo *paint_core_undo;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
paint_core_undo = GIMP_PAINT_CORE_UNDO (object);
g_assert (GIMP_IS_PAINT_CORE (paint_core_undo->paint_core));
paint_core_undo->last_coords = paint_core_undo->paint_core->start_coords;
g_object_add_weak_pointer (G_OBJECT (paint_core_undo->paint_core),
(gpointer) &paint_core_undo->paint_core);
return object;
}
static void
gimp_paint_core_undo_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpPaintCoreUndo *paint_core_undo = GIMP_PAINT_CORE_UNDO (object);
switch (property_id)
{
case PROP_PAINT_CORE:
paint_core_undo->paint_core = g_value_get_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_paint_core_undo_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpPaintCoreUndo *paint_core_undo = GIMP_PAINT_CORE_UNDO (object);
switch (property_id)
{
case PROP_PAINT_CORE:
g_value_set_object (value, paint_core_undo->paint_core);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_paint_core_undo_pop (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
GimpPaintCoreUndo *paint_core_undo = GIMP_PAINT_CORE_UNDO (undo);
GIMP_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
/* only pop if the core still exists */
if (paint_core_undo->paint_core)
{
GimpCoords tmp_coords;
tmp_coords = paint_core_undo->paint_core->last_coords;
paint_core_undo->paint_core->last_coords = paint_core_undo->last_coords;
paint_core_undo->last_coords = tmp_coords;
}
}
static void
gimp_paint_core_undo_free (GimpUndo *undo,
GimpUndoMode undo_mode)
{
GimpPaintCoreUndo *paint_core_undo = GIMP_PAINT_CORE_UNDO (undo);
if (paint_core_undo->paint_core)
{
g_object_remove_weak_pointer (G_OBJECT (paint_core_undo->paint_core),
(gpointer) &paint_core_undo->paint_core);
paint_core_undo->paint_core = NULL;
}
GIMP_UNDO_CLASS (parent_class)->free (undo, undo_mode);
}