PIKApp/app/display/pikacanvasproxygroup.c

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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
*
* pikacanvasproxygroup.c
* Copyright (C) 2010 Michael Natterer <mitch@gimp.org>
*
* 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 <gegl.h>
#include <gtk/gtk.h>
#include "libpikabase/pikabase.h"
#include "libpikamath/pikamath.h"
#include "display-types.h"
#include "pikacanvas.h"
#include "pikacanvasproxygroup.h"
#include "pikadisplayshell.h"
enum
{
PROP_0
};
typedef struct _PikaCanvasProxyGroupPrivate PikaCanvasProxyGroupPrivate;
struct _PikaCanvasProxyGroupPrivate
{
GHashTable *proxy_hash;
};
#define GET_PRIVATE(proxy_group) \
((PikaCanvasProxyGroupPrivate *) pika_canvas_proxy_group_get_instance_private ((PikaCanvasProxyGroup *) (proxy_group)))
/* local function prototypes */
static void pika_canvas_proxy_group_finalize (GObject *object);
static void pika_canvas_proxy_group_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void pika_canvas_proxy_group_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
G_DEFINE_TYPE_WITH_PRIVATE (PikaCanvasProxyGroup, pika_canvas_proxy_group,
PIKA_TYPE_CANVAS_GROUP)
#define parent_class pika_canvas_proxy_group_parent_class
static void
pika_canvas_proxy_group_class_init (PikaCanvasProxyGroupClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = pika_canvas_proxy_group_finalize;
object_class->set_property = pika_canvas_proxy_group_set_property;
object_class->get_property = pika_canvas_proxy_group_get_property;
}
static void
pika_canvas_proxy_group_init (PikaCanvasProxyGroup *proxy_group)
{
PikaCanvasProxyGroupPrivate *private = GET_PRIVATE (proxy_group);
private->proxy_hash = g_hash_table_new (g_direct_hash, g_direct_equal);
}
static void
pika_canvas_proxy_group_finalize (GObject *object)
{
PikaCanvasProxyGroupPrivate *private = GET_PRIVATE (object);
g_clear_pointer (&private->proxy_hash, g_hash_table_unref);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
pika_canvas_proxy_group_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
/* PikaCanvasProxyGroupPrivate *private = GET_PRIVATE (object); */
switch (property_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
pika_canvas_proxy_group_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
/* PikaCanvasProxyGroupPrivate *private = GET_PRIVATE (object); */
switch (property_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
PikaCanvasItem *
pika_canvas_proxy_group_new (PikaDisplayShell *shell)
{
g_return_val_if_fail (PIKA_IS_DISPLAY_SHELL (shell), NULL);
return g_object_new (PIKA_TYPE_CANVAS_PROXY_GROUP,
"shell", shell,
NULL);
}
void
pika_canvas_proxy_group_add_item (PikaCanvasProxyGroup *group,
gpointer object,
PikaCanvasItem *proxy_item)
{
PikaCanvasProxyGroupPrivate *private;
g_return_if_fail (PIKA_IS_CANVAS_GROUP (group));
g_return_if_fail (object != NULL);
g_return_if_fail (PIKA_IS_CANVAS_ITEM (proxy_item));
g_return_if_fail (PIKA_CANVAS_ITEM (group) != proxy_item);
private = GET_PRIVATE (group);
g_return_if_fail (g_hash_table_lookup (private->proxy_hash, object) ==
NULL);
g_hash_table_insert (private->proxy_hash, object, proxy_item);
pika_canvas_group_add_item (PIKA_CANVAS_GROUP (group), proxy_item);
}
void
pika_canvas_proxy_group_remove_item (PikaCanvasProxyGroup *group,
gpointer object)
{
PikaCanvasProxyGroupPrivate *private;
PikaCanvasItem *proxy_item;
g_return_if_fail (PIKA_IS_CANVAS_GROUP (group));
g_return_if_fail (object != NULL);
private = GET_PRIVATE (group);
proxy_item = g_hash_table_lookup (private->proxy_hash, object);
g_return_if_fail (proxy_item != NULL);
g_hash_table_remove (private->proxy_hash, object);
pika_canvas_group_remove_item (PIKA_CANVAS_GROUP (group), proxy_item);
}
PikaCanvasItem *
pika_canvas_proxy_group_get_item (PikaCanvasProxyGroup *group,
gpointer object)
{
PikaCanvasProxyGroupPrivate *private;
g_return_val_if_fail (PIKA_IS_CANVAS_GROUP (group), NULL);
g_return_val_if_fail (object != NULL, NULL);
private = GET_PRIVATE (group);
return g_hash_table_lookup (private->proxy_hash, object);
}