PIKApp/app/paint/pikapaintcoreundo.c

172 lines
5.7 KiB
C

/* 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 <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "libpikabase/pikabase.h"
#include "paint-types.h"
#include "pikapaintcore.h"
#include "pikapaintcoreundo.h"
enum
{
PROP_0,
PROP_PAINT_CORE
};
static void pika_paint_core_undo_constructed (GObject *object);
static void pika_paint_core_undo_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void pika_paint_core_undo_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void pika_paint_core_undo_pop (PikaUndo *undo,
PikaUndoMode undo_mode,
PikaUndoAccumulator *accum);
static void pika_paint_core_undo_free (PikaUndo *undo,
PikaUndoMode undo_mode);
G_DEFINE_TYPE (PikaPaintCoreUndo, pika_paint_core_undo, PIKA_TYPE_UNDO)
#define parent_class pika_paint_core_undo_parent_class
static void
pika_paint_core_undo_class_init (PikaPaintCoreUndoClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
PikaUndoClass *undo_class = PIKA_UNDO_CLASS (klass);
object_class->constructed = pika_paint_core_undo_constructed;
object_class->set_property = pika_paint_core_undo_set_property;
object_class->get_property = pika_paint_core_undo_get_property;
undo_class->pop = pika_paint_core_undo_pop;
undo_class->free = pika_paint_core_undo_free;
g_object_class_install_property (object_class, PROP_PAINT_CORE,
g_param_spec_object ("paint-core", NULL, NULL,
PIKA_TYPE_PAINT_CORE,
PIKA_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
pika_paint_core_undo_init (PikaPaintCoreUndo *undo)
{
}
static void
pika_paint_core_undo_constructed (GObject *object)
{
PikaPaintCoreUndo *paint_core_undo = PIKA_PAINT_CORE_UNDO (object);
G_OBJECT_CLASS (parent_class)->constructed (object);
pika_assert (PIKA_IS_PAINT_CORE (paint_core_undo->paint_core));
paint_core_undo->last_coords = paint_core_undo->paint_core->start_coords;
}
static void
pika_paint_core_undo_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
PikaPaintCoreUndo *paint_core_undo = PIKA_PAINT_CORE_UNDO (object);
switch (property_id)
{
case PROP_PAINT_CORE:
g_set_weak_pointer (&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
pika_paint_core_undo_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
PikaPaintCoreUndo *paint_core_undo = PIKA_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
pika_paint_core_undo_pop (PikaUndo *undo,
PikaUndoMode undo_mode,
PikaUndoAccumulator *accum)
{
PikaPaintCoreUndo *paint_core_undo = PIKA_PAINT_CORE_UNDO (undo);
PIKA_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
/* only pop if the core still exists */
if (paint_core_undo->paint_core)
{
PikaCoords 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
pika_paint_core_undo_free (PikaUndo *undo,
PikaUndoMode undo_mode)
{
PikaPaintCoreUndo *paint_core_undo = PIKA_PAINT_CORE_UNDO (undo);
g_clear_weak_pointer (&paint_core_undo->paint_core);
PIKA_UNDO_CLASS (parent_class)->free (undo, undo_mode);
}