Commit f6314b48 authored by Michael Natterer's avatar Michael Natterer 😴

app: add GimpCanvasProxyGroup

which is a group that keeps a mapping between arbitrary pointers and
canvas items. No MVC whatsoever yet, just a simple hash table.
parent 36ee0a73
......@@ -37,6 +37,8 @@ libappdisplay_a_sources = \
gimpcanvasline.h \
gimpcanvaspolygon.c \
gimpcanvaspolygon.h \
gimpcanvasproxygroup.c \
gimpcanvasproxygroup.h \
gimpcanvasrectangle.c \
gimpcanvasrectangle.h \
gimpcanvassamplepoint.c \
......
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcanvasproxygroup.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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpmath/gimpmath.h"
#include "display-types.h"
#include "gimpcanvas.h"
#include "gimpcanvasproxygroup.h"
#include "gimpdisplayshell.h"
#include "gimpdisplayshell-style.h"
#include "gimpdisplayshell-transform.h"
enum
{
PROP_0
};
typedef struct _GimpCanvasProxyGroupPrivate GimpCanvasProxyGroupPrivate;
struct _GimpCanvasProxyGroupPrivate
{
GHashTable *proxy_hash;
};
#define GET_PRIVATE(proxy_group) \
G_TYPE_INSTANCE_GET_PRIVATE (proxy_group, \
GIMP_TYPE_CANVAS_PROXY_GROUP, \
GimpCanvasProxyGroupPrivate)
/* local function prototypes */
static void gimp_canvas_proxy_group_finalize (GObject *object);
static void gimp_canvas_proxy_group_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_canvas_proxy_group_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
G_DEFINE_TYPE (GimpCanvasProxyGroup, gimp_canvas_proxy_group,
GIMP_TYPE_CANVAS_GROUP)
#define parent_class gimp_canvas_proxy_group_parent_class
static void
gimp_canvas_proxy_group_class_init (GimpCanvasProxyGroupClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gimp_canvas_proxy_group_finalize;
object_class->set_property = gimp_canvas_proxy_group_set_property;
object_class->get_property = gimp_canvas_proxy_group_get_property;
g_type_class_add_private (klass, sizeof (GimpCanvasProxyGroupPrivate));
}
static void
gimp_canvas_proxy_group_init (GimpCanvasProxyGroup *proxy_group)
{
GimpCanvasProxyGroupPrivate *private = GET_PRIVATE (proxy_group);
private->proxy_hash = g_hash_table_new (g_direct_hash, g_direct_equal);
}
static void
gimp_canvas_proxy_group_finalize (GObject *object)
{
GimpCanvasProxyGroupPrivate *private = GET_PRIVATE (object);
if (private->proxy_hash)
{
g_hash_table_unref (private->proxy_hash);
private->proxy_hash = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_canvas_proxy_group_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
/* GimpCanvasProxyGroupPrivate *private = GET_PRIVATE (object); */
switch (property_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_canvas_proxy_group_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
/* GimpCanvasProxyGroupPrivate *private = GET_PRIVATE (object); */
switch (property_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
GimpCanvasItem *
gimp_canvas_proxy_group_new (void)
{
return g_object_new (GIMP_TYPE_CANVAS_PROXY_GROUP, NULL);
}
void
gimp_canvas_proxy_group_add_item (GimpCanvasProxyGroup *group,
gpointer object,
GimpCanvasItem *proxy_item)
{
GimpCanvasProxyGroupPrivate *private;
g_return_if_fail (GIMP_IS_CANVAS_GROUP (group));
g_return_if_fail (object != NULL);
g_return_if_fail (GIMP_IS_CANVAS_ITEM (proxy_item));
g_return_if_fail (GIMP_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);
gimp_canvas_group_add_item (GIMP_CANVAS_GROUP (group), proxy_item);
}
void
gimp_canvas_proxy_group_remove_item (GimpCanvasProxyGroup *group,
gpointer object,
GimpCanvasItem *proxy_item)
{
GimpCanvasProxyGroupPrivate *private;
g_return_if_fail (GIMP_IS_CANVAS_GROUP (group));
g_return_if_fail (object != NULL);
g_return_if_fail (GIMP_IS_CANVAS_ITEM (proxy_item));
private = GET_PRIVATE (group);
g_return_if_fail (g_hash_table_lookup (private->proxy_hash, object) ==
proxy_item);
g_hash_table_remove (private->proxy_hash, object);
gimp_canvas_group_remove_item (GIMP_CANVAS_GROUP (group), proxy_item);
}
GimpCanvasItem *
gimp_canvas_proxy_group_get_item (GimpCanvasProxyGroup *group,
gpointer object)
{
GimpCanvasProxyGroupPrivate *private;
g_return_val_if_fail (GIMP_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);
}
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcanvasproxygroup.h
* 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 <http://www.gnu.org/licenses/>.
*/
#ifndef __GIMP_CANVAS_PROXY_GROUP_H__
#define __GIMP_CANVAS_PROXY_GROUP_H__
#include "gimpcanvasgroup.h"
#define GIMP_TYPE_CANVAS_PROXY_GROUP (gimp_canvas_proxy_group_get_type ())
#define GIMP_CANVAS_PROXY_GROUP(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_CANVAS_PROXY_GROUP, GimpCanvasProxyGroup))
#define GIMP_CANVAS_PROXY_GROUP_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_CANVAS_PROXY_GROUP, GimpCanvasProxyGroupClass))
#define GIMP_IS_CANVAS_PROXY_GROUP(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_CANVAS_PROXY_GROUP))
#define GIMP_IS_CANVAS_PROXY_GROUP_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_CANVAS_PROXY_GROUP))
#define GIMP_CANVAS_PROXY_GROUP_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_CANVAS_PROXY_GROUP, GimpCanvasProxyGroupClass))
typedef struct _GimpCanvasProxyGroup GimpCanvasProxyGroup;
typedef struct _GimpCanvasProxyGroupClass GimpCanvasProxyGroupClass;
struct _GimpCanvasProxyGroup
{
GimpCanvasGroup parent_instance;
};
struct _GimpCanvasProxyGroupClass
{
GimpCanvasGroupClass parent_class;
};
GType gimp_canvas_proxy_group_get_type (void) G_GNUC_CONST;
GimpCanvasItem * gimp_canvas_proxy_group_new (void);
void gimp_canvas_proxy_group_add_item (GimpCanvasProxyGroup *group,
gpointer object,
GimpCanvasItem *proxy_item);
void gimp_canvas_proxy_group_remove_item (GimpCanvasProxyGroup *group,
gpointer object,
GimpCanvasItem *proxy_item);
GimpCanvasItem * gimp_canvas_proxy_group_get_item (GimpCanvasProxyGroup *group,
gpointer object);
#endif /* __GIMP_CANVAS_PROXY_GROUP_H__ */
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