gimp/app/text/gimptextundo.c

261 lines
7.9 KiB
C

/* The GIMP -- an 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <glib-object.h>
#include "libgimpconfig/gimpconfig.h"
#include "text-types.h"
#include "core/gimpitem.h"
#include "core/gimpitemundo.h"
#include "core/gimp-utils.h"
#include "gimptext.h"
#include "gimptextlayer.h"
#include "gimptextundo.h"
enum
{
PROP_0,
PROP_PARAM
};
static GObject * gimp_text_undo_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static void gimp_text_undo_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_text_undo_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static gint64 gimp_text_undo_get_memsize (GimpObject *object,
gint64 *gui_size);
static void gimp_text_undo_pop (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void gimp_text_undo_free (GimpUndo *undo,
GimpUndoMode undo_mode);
G_DEFINE_TYPE (GimpTextUndo, gimp_text_undo, GIMP_TYPE_ITEM_UNDO)
#define parent_class gimp_text_undo_parent_class
static void
gimp_text_undo_class_init (GimpTextUndoClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
GimpUndoClass *undo_class = GIMP_UNDO_CLASS (klass);
object_class->constructor = gimp_text_undo_constructor;
object_class->set_property = gimp_text_undo_set_property;
object_class->get_property = gimp_text_undo_get_property;
gimp_object_class->get_memsize = gimp_text_undo_get_memsize;
undo_class->pop = gimp_text_undo_pop;
undo_class->free = gimp_text_undo_free;
g_object_class_install_property (object_class, PROP_PARAM,
g_param_spec_param ("param", NULL, NULL,
G_TYPE_PARAM,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
gimp_text_undo_init (GimpTextUndo *undo)
{
}
static GObject *
gimp_text_undo_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpTextUndo *text_undo;
GimpTextLayer *layer;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
text_undo = GIMP_TEXT_UNDO (object);
g_assert (GIMP_IS_TEXT_LAYER (GIMP_ITEM_UNDO (text_undo)->item));
layer = GIMP_TEXT_LAYER (GIMP_ITEM_UNDO (text_undo)->item);
if (text_undo->pspec)
{
g_assert (text_undo->pspec->owner_type == GIMP_TYPE_TEXT);
text_undo->value = g_new0 (GValue, 1);
g_value_init (text_undo->value, text_undo->pspec->value_type);
g_object_get_property (G_OBJECT (layer->text),
text_undo->pspec->name, text_undo->value);
}
else if (layer->text)
{
text_undo->text = gimp_config_duplicate (GIMP_CONFIG (layer->text));
}
return object;
}
static void
gimp_text_undo_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpTextUndo *text_undo = GIMP_TEXT_UNDO (object);
switch (property_id)
{
case PROP_PARAM:
text_undo->pspec = g_value_get_param (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_text_undo_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpTextUndo *text_undo = GIMP_TEXT_UNDO (object);
switch (property_id)
{
case PROP_PARAM:
g_value_set_param (value, (GParamSpec *) text_undo->pspec);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static gint64
gimp_text_undo_get_memsize (GimpObject *object,
gint64 *gui_size)
{
GimpTextUndo *undo = GIMP_TEXT_UNDO (object);
gint64 memsize = 0;
if (undo->value)
memsize += gimp_g_value_get_memsize (undo->value);
if (undo->text)
memsize += gimp_object_get_memsize (GIMP_OBJECT (undo->text), NULL);
return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
gui_size);
}
static void
gimp_text_undo_pop (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
GimpTextUndo *text_undo = GIMP_TEXT_UNDO (undo);
GimpTextLayer *layer = GIMP_TEXT_LAYER (GIMP_ITEM_UNDO (undo)->item);
if (text_undo->pspec)
{
GValue *value;
g_return_if_fail (layer->text != NULL);
value = g_new0 (GValue, 1);
g_value_init (value, text_undo->pspec->value_type);
g_object_get_property (G_OBJECT (layer->text),
text_undo->pspec->name, value);
g_object_set_property (G_OBJECT (layer->text),
text_undo->pspec->name, text_undo->value);
g_value_unset (text_undo->value);
g_free (text_undo->value);
text_undo->value = value;
}
else
{
GimpText *text;
text = (layer->text ?
gimp_config_duplicate (GIMP_CONFIG (layer->text)) : NULL);
if (layer->text && text_undo->text)
gimp_config_sync (G_OBJECT (text_undo->text),
G_OBJECT (layer->text), 0);
else
gimp_text_layer_set_text (layer, text_undo->text);
if (text_undo->text)
g_object_unref (text_undo->text);
text_undo->text = text;
}
GIMP_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
}
static void
gimp_text_undo_free (GimpUndo *undo,
GimpUndoMode undo_mode)
{
GimpTextUndo *text_undo = GIMP_TEXT_UNDO (undo);
if (text_undo->text)
{
g_object_unref (text_undo->text);
text_undo->text = NULL;
}
if (text_undo->pspec)
{
g_value_unset (text_undo->value);
g_free (text_undo->value);
text_undo->value = NULL;
text_undo->pspec = NULL;
}
GIMP_UNDO_CLASS (parent_class)->free (undo, undo_mode);
}