PIKApp/app/text/pikatextundo.c

313 lines
9.6 KiB
C
Raw Permalink Normal View History

2023-09-26 00:35:21 +02:00
/* 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 "libpikaconfig/pikaconfig.h"
#include "text-types.h"
#include "gegl/pika-babl.h"
#include "core/pika-memsize.h"
#include "core/pikaitem.h"
#include "core/pikaitemundo.h"
#include "pikatext.h"
#include "pikatextlayer.h"
#include "pikatextundo.h"
enum
{
PROP_0,
PROP_PARAM
};
static void pika_text_undo_constructed (GObject *object);
static void pika_text_undo_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void pika_text_undo_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static gint64 pika_text_undo_get_memsize (PikaObject *object,
gint64 *gui_size);
static void pika_text_undo_pop (PikaUndo *undo,
PikaUndoMode undo_mode,
PikaUndoAccumulator *accum);
static void pika_text_undo_free (PikaUndo *undo,
PikaUndoMode undo_mode);
G_DEFINE_TYPE (PikaTextUndo, pika_text_undo, PIKA_TYPE_ITEM_UNDO)
#define parent_class pika_text_undo_parent_class
static void
pika_text_undo_class_init (PikaTextUndoClass *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_text_undo_constructed;
object_class->set_property = pika_text_undo_set_property;
object_class->get_property = pika_text_undo_get_property;
pika_object_class->get_memsize = pika_text_undo_get_memsize;
undo_class->pop = pika_text_undo_pop;
undo_class->free = pika_text_undo_free;
g_object_class_install_property (object_class, PROP_PARAM,
g_param_spec_param ("param", NULL, NULL,
G_TYPE_PARAM,
PIKA_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
pika_text_undo_init (PikaTextUndo *undo)
{
}
static void
pika_text_undo_constructed (GObject *object)
{
PikaTextUndo *text_undo = PIKA_TEXT_UNDO (object);
PikaTextLayer *layer;
G_OBJECT_CLASS (parent_class)->constructed (object);
pika_assert (PIKA_IS_TEXT_LAYER (PIKA_ITEM_UNDO (text_undo)->item));
layer = PIKA_TEXT_LAYER (PIKA_ITEM_UNDO (text_undo)->item);
switch (PIKA_UNDO (object)->undo_type)
{
case PIKA_UNDO_TEXT_LAYER:
if (text_undo->pspec)
{
pika_assert (text_undo->pspec->owner_type == PIKA_TYPE_TEXT);
text_undo->value = g_slice_new0 (GValue);
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 = pika_config_duplicate (PIKA_CONFIG (layer->text));
}
break;
case PIKA_UNDO_TEXT_LAYER_MODIFIED:
text_undo->modified = layer->modified;
break;
case PIKA_UNDO_TEXT_LAYER_CONVERT:
text_undo->format = pika_drawable_get_format (PIKA_DRAWABLE (layer));
break;
default:
pika_assert_not_reached ();
}
}
static void
pika_text_undo_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
PikaTextUndo *text_undo = PIKA_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
pika_text_undo_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
PikaTextUndo *text_undo = PIKA_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
pika_text_undo_get_memsize (PikaObject *object,
gint64 *gui_size)
{
PikaTextUndo *undo = PIKA_TEXT_UNDO (object);
gint64 memsize = 0;
memsize += pika_g_value_get_memsize (undo->value);
memsize += pika_object_get_memsize (PIKA_OBJECT (undo->text), NULL);
return memsize + PIKA_OBJECT_CLASS (parent_class)->get_memsize (object,
gui_size);
}
static void
pika_text_undo_pop (PikaUndo *undo,
PikaUndoMode undo_mode,
PikaUndoAccumulator *accum)
{
PikaTextUndo *text_undo = PIKA_TEXT_UNDO (undo);
PikaTextLayer *layer = PIKA_TEXT_LAYER (PIKA_ITEM_UNDO (undo)->item);
PIKA_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
switch (undo->undo_type)
{
case PIKA_UNDO_TEXT_LAYER:
if (text_undo->pspec)
{
GValue *value;
g_return_if_fail (layer->text != NULL);
value = g_slice_new0 (GValue);
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_slice_free (GValue, text_undo->value);
text_undo->value = value;
}
else
{
PikaText *text;
text = (layer->text ?
pika_config_duplicate (PIKA_CONFIG (layer->text)) : NULL);
if (layer->text && text_undo->text)
pika_config_sync (G_OBJECT (text_undo->text),
G_OBJECT (layer->text), 0);
else
pika_text_layer_set_text (layer, text_undo->text);
if (text_undo->text)
g_object_unref (text_undo->text);
text_undo->text = text;
}
break;
case PIKA_UNDO_TEXT_LAYER_MODIFIED:
{
gboolean modified;
#if 0
g_print ("setting layer->modified from %s to %s\n",
layer->modified ? "TRUE" : "FALSE",
text_undo->modified ? "TRUE" : "FALSE");
#endif
modified = layer->modified;
g_object_set (layer, "modified", text_undo->modified, NULL);
text_undo->modified = modified;
pika_viewable_invalidate_preview (PIKA_VIEWABLE (layer));
}
break;
case PIKA_UNDO_TEXT_LAYER_CONVERT:
{
const Babl *format;
format = pika_drawable_get_format (PIKA_DRAWABLE (layer));
pika_drawable_convert_type (PIKA_DRAWABLE (layer),
pika_item_get_image (PIKA_ITEM (layer)),
pika_babl_format_get_base_type (text_undo->format),
pika_babl_format_get_precision (text_undo->format),
babl_format_has_alpha (text_undo->format),
NULL, NULL,
GEGL_DITHER_NONE, GEGL_DITHER_NONE,
FALSE, NULL);
text_undo->format = format;
}
break;
default:
pika_assert_not_reached ();
}
}
static void
pika_text_undo_free (PikaUndo *undo,
PikaUndoMode undo_mode)
{
PikaTextUndo *text_undo = PIKA_TEXT_UNDO (undo);
g_clear_object (&text_undo->text);
if (text_undo->pspec)
{
g_value_unset (text_undo->value);
g_slice_free (GValue, text_undo->value);
text_undo->value = NULL;
text_undo->pspec = NULL;
}
PIKA_UNDO_CLASS (parent_class)->free (undo, undo_mode);
}