PIKApp/app/core/pikadrawablemodundo.c

223 lines
7.7 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 "core-types.h"
#include "gegl/pika-gegl-utils.h"
#include "pika-memsize.h"
#include "pikaimage.h"
#include "pikadrawable.h"
#include "pikadrawablemodundo.h"
enum
{
PROP_0,
PROP_COPY_BUFFER
};
static void pika_drawable_mod_undo_constructed (GObject *object);
static void pika_drawable_mod_undo_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void pika_drawable_mod_undo_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static gint64 pika_drawable_mod_undo_get_memsize (PikaObject *object,
gint64 *gui_size);
static void pika_drawable_mod_undo_pop (PikaUndo *undo,
PikaUndoMode undo_mode,
PikaUndoAccumulator *accum);
static void pika_drawable_mod_undo_free (PikaUndo *undo,
PikaUndoMode undo_mode);
G_DEFINE_TYPE (PikaDrawableModUndo, pika_drawable_mod_undo, PIKA_TYPE_ITEM_UNDO)
#define parent_class pika_drawable_mod_undo_parent_class
static void
pika_drawable_mod_undo_class_init (PikaDrawableModUndoClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
PikaObjectClass *pika_object_class = PIKA_OBJECT_CLASS (klass);
PikaUndoClass *undo_class = PIKA_UNDO_CLASS (klass);
object_class->constructed = pika_drawable_mod_undo_constructed;
object_class->set_property = pika_drawable_mod_undo_set_property;
object_class->get_property = pika_drawable_mod_undo_get_property;
pika_object_class->get_memsize = pika_drawable_mod_undo_get_memsize;
undo_class->pop = pika_drawable_mod_undo_pop;
undo_class->free = pika_drawable_mod_undo_free;
g_object_class_install_property (object_class, PROP_COPY_BUFFER,
g_param_spec_boolean ("copy-buffer",
NULL, NULL,
FALSE,
PIKA_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
pika_drawable_mod_undo_init (PikaDrawableModUndo *undo)
{
}
static void
pika_drawable_mod_undo_constructed (GObject *object)
{
PikaDrawableModUndo *drawable_mod_undo = PIKA_DRAWABLE_MOD_UNDO (object);
PikaItem *item;
PikaDrawable *drawable;
G_OBJECT_CLASS (parent_class)->constructed (object);
pika_assert (PIKA_IS_DRAWABLE (PIKA_ITEM_UNDO (object)->item));
item = PIKA_ITEM_UNDO (object)->item;
drawable = PIKA_DRAWABLE (item);
if (drawable_mod_undo->copy_buffer)
{
drawable_mod_undo->buffer =
pika_gegl_buffer_dup (pika_drawable_get_buffer (drawable));
}
else
{
drawable_mod_undo->buffer =
g_object_ref (pika_drawable_get_buffer (drawable));
}
pika_item_get_offset (item,
&drawable_mod_undo->offset_x,
&drawable_mod_undo->offset_y);
}
static void
pika_drawable_mod_undo_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
PikaDrawableModUndo *drawable_mod_undo = PIKA_DRAWABLE_MOD_UNDO (object);
switch (property_id)
{
case PROP_COPY_BUFFER:
drawable_mod_undo->copy_buffer = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
pika_drawable_mod_undo_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
PikaDrawableModUndo *drawable_mod_undo = PIKA_DRAWABLE_MOD_UNDO (object);
switch (property_id)
{
case PROP_COPY_BUFFER:
g_value_set_boolean (value, drawable_mod_undo->copy_buffer);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static gint64
pika_drawable_mod_undo_get_memsize (PikaObject *object,
gint64 *gui_size)
{
PikaDrawableModUndo *drawable_mod_undo = PIKA_DRAWABLE_MOD_UNDO (object);
gint64 memsize = 0;
memsize += pika_gegl_buffer_get_memsize (drawable_mod_undo->buffer);
return memsize + PIKA_OBJECT_CLASS (parent_class)->get_memsize (object,
gui_size);
}
static void
pika_drawable_mod_undo_pop (PikaUndo *undo,
PikaUndoMode undo_mode,
PikaUndoAccumulator *accum)
{
PikaDrawableModUndo *drawable_mod_undo = PIKA_DRAWABLE_MOD_UNDO (undo);
PikaDrawable *drawable = PIKA_DRAWABLE (PIKA_ITEM_UNDO (undo)->item);
GeglBuffer *buffer;
gint offset_x;
gint offset_y;
PIKA_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
buffer = drawable_mod_undo->buffer;
offset_x = drawable_mod_undo->offset_x;
offset_y = drawable_mod_undo->offset_y;
drawable_mod_undo->buffer = g_object_ref (pika_drawable_get_buffer (drawable));
pika_item_get_offset (PIKA_ITEM (drawable),
&drawable_mod_undo->offset_x,
&drawable_mod_undo->offset_y);
pika_drawable_set_buffer_full (drawable, FALSE, NULL,
buffer,
GEGL_RECTANGLE (offset_x, offset_y, 0, 0),
TRUE);
g_object_unref (buffer);
}
static void
pika_drawable_mod_undo_free (PikaUndo *undo,
PikaUndoMode undo_mode)
{
PikaDrawableModUndo *drawable_mod_undo = PIKA_DRAWABLE_MOD_UNDO (undo);
g_clear_object (&drawable_mod_undo->buffer);
PIKA_UNDO_CLASS (parent_class)->free (undo, undo_mode);
}