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gimp/app/widgets/gimpcontainermenu.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcontainermenu.c
* Copyright (C) 2001 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 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 <gtk/gtk.h>
#include "widgets-types.h"
#include "core/gimpcontainer.h"
#include "core/gimpcontext.h"
#include "core/gimpmarshal.h"
#include "core/gimpviewable.h"
#include "gimpcontainermenu.h"
#include "gimppreviewrenderer.h"
enum
{
SELECT_ITEM,
ACTIVATE_ITEM,
CONTEXT_ITEM,
LAST_SIGNAL
};
static void gimp_container_menu_class_init (GimpContainerMenuClass *klass);
static void gimp_container_menu_init (GimpContainerMenu *panel);
static void gimp_container_menu_destroy (GtkObject *object);
static void gimp_container_menu_real_set_container (GimpContainerMenu *menu,
GimpContainer *container);
static void gimp_container_menu_clear_items (GimpContainerMenu *menu);
static void gimp_container_menu_real_clear_items (GimpContainerMenu *menu);
static void gimp_container_menu_add_foreach (GimpViewable *viewable,
GimpContainerMenu *menu);
static void gimp_container_menu_add (GimpContainerMenu *menu,
GimpViewable *viewable,
GimpContainer *container);
static void gimp_container_menu_remove (GimpContainerMenu *menu,
GimpViewable *viewable,
GimpContainer *container);
static void gimp_container_menu_reorder (GimpContainerMenu *menu,
GimpViewable *viewable,
gint new_index,
GimpContainer *container);
static void gimp_container_menu_context_changed (GimpContext *context,
GimpViewable *viewable,
GimpContainerMenu *menu);
static guint menu_signals[LAST_SIGNAL] = { 0 };
static GtkVBoxClass *parent_class = NULL;
GType
gimp_container_menu_get_type (void)
{
static GType menu_type = 0;
if (! menu_type)
{
static const GTypeInfo menu_info =
{
sizeof (GimpContainerMenuClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gimp_container_menu_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpContainerMenu),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_container_menu_init,
};
menu_type = g_type_register_static (GTK_TYPE_MENU,
"GimpContainerMenu",
&menu_info, 0);
}
return menu_type;
}
static void
gimp_container_menu_class_init (GimpContainerMenuClass *klass)
{
GtkObjectClass *object_class;
object_class = GTK_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
menu_signals[SELECT_ITEM] =
g_signal_new ("select_item",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpContainerMenuClass, select_item),
NULL, NULL,
gimp_marshal_VOID__OBJECT_POINTER,
G_TYPE_NONE, 2,
GIMP_TYPE_OBJECT,
G_TYPE_POINTER);
menu_signals[ACTIVATE_ITEM] =
g_signal_new ("activate_item",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpContainerMenuClass, activate_item),
NULL, NULL,
gimp_marshal_VOID__OBJECT_POINTER,
G_TYPE_NONE, 2,
GIMP_TYPE_OBJECT,
G_TYPE_POINTER);
menu_signals[CONTEXT_ITEM] =
g_signal_new ("context_item",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpContainerMenuClass, context_item),
NULL, NULL,
gimp_marshal_VOID__OBJECT_POINTER,
G_TYPE_NONE, 2,
GIMP_TYPE_OBJECT,
G_TYPE_POINTER);
object_class->destroy = gimp_container_menu_destroy;
klass->select_item = NULL;
klass->activate_item = NULL;
klass->context_item = NULL;
klass->set_container = gimp_container_menu_real_set_container;
klass->insert_item = NULL;
klass->remove_item = NULL;
klass->reorder_item = NULL;
klass->clear_items = gimp_container_menu_real_clear_items;
klass->set_preview_size = NULL;
}
static void
gimp_container_menu_init (GimpContainerMenu *menu)
{
menu->container = NULL;
menu->context = NULL;
menu->hash_table = g_hash_table_new (g_direct_hash, g_direct_equal);
menu->preview_size = 0;
menu->preview_border_width = 1;
}
static void
gimp_container_menu_destroy (GtkObject *object)
{
GimpContainerMenu *menu;
menu = GIMP_CONTAINER_MENU (object);
if (menu->container)
gimp_container_menu_set_container (menu, NULL);
if (menu->context)
gimp_container_menu_set_context (menu, NULL);
if (menu->hash_table)
{
g_hash_table_destroy (menu->hash_table);
menu->hash_table = NULL;
}
if (GTK_OBJECT_CLASS (parent_class)->destroy)
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
void
gimp_container_menu_set_container (GimpContainerMenu *menu,
GimpContainer *container)
{
g_return_if_fail (GIMP_IS_CONTAINER_MENU (menu));
g_return_if_fail (container == NULL || GIMP_IS_CONTAINER (container));
if (container != menu->container)
GIMP_CONTAINER_MENU_GET_CLASS (menu)->set_container (menu, container);
}
static void
gimp_container_menu_real_set_container (GimpContainerMenu *menu,
GimpContainer *container)
{
if (menu->container)
{
gimp_container_menu_select_item (menu, NULL);
gimp_container_menu_clear_items (menu);
g_signal_handlers_disconnect_by_func (menu->container,
gimp_container_menu_add,
menu);
g_signal_handlers_disconnect_by_func (menu->container,
gimp_container_menu_remove,
menu);
g_signal_handlers_disconnect_by_func (menu->container,
gimp_container_menu_reorder,
menu);
g_hash_table_destroy (menu->hash_table);
menu->hash_table = g_hash_table_new (g_direct_hash, g_direct_equal);
if (menu->context)
{
g_signal_handlers_disconnect_by_func (menu->context,
gimp_container_menu_context_changed,
menu);
}
}
menu->container = container;
if (menu->container)
{
gimp_container_foreach (menu->container,
(GFunc) gimp_container_menu_add_foreach,
menu);
g_signal_connect_swapped (menu->container, "add",
G_CALLBACK (gimp_container_menu_add),
menu);
g_signal_connect_swapped (menu->container, "remove",
G_CALLBACK (gimp_container_menu_remove),
menu);
g_signal_connect_swapped (menu->container, "reorder",
G_CALLBACK (gimp_container_menu_reorder),
menu);
if (menu->context)
{
GimpObject *object;
const gchar *signal_name;
signal_name =
gimp_context_type_to_signal_name (menu->container->children_type);
g_signal_connect (menu->context, signal_name,
G_CALLBACK (gimp_container_menu_context_changed),
menu);
object = gimp_context_get_by_type (menu->context,
menu->container->children_type);
gimp_container_menu_select_item (menu,
object ?
GIMP_VIEWABLE (object): NULL);
}
}
}
void
gimp_container_menu_set_context (GimpContainerMenu *menu,
GimpContext *context)
{
g_return_if_fail (GIMP_IS_CONTAINER_MENU (menu));
g_return_if_fail ( ! context || GIMP_IS_CONTEXT (context));
if (context == menu->context)
return;
if (menu->context)
{
if (menu->container)
{
g_signal_handlers_disconnect_by_func (menu->context,
gimp_container_menu_context_changed,
menu);
}
g_object_unref (menu->context);
}
menu->context = context;
if (menu->context)
{
g_object_ref (menu->context);
if (menu->container)
{
GimpObject *object;
const gchar *signal_name;
signal_name =
gimp_context_type_to_signal_name (menu->container->children_type);
g_signal_connect (menu->context, signal_name,
G_CALLBACK (gimp_container_menu_context_changed),
menu);
object = gimp_context_get_by_type (menu->context,
menu->container->children_type);
gimp_container_menu_select_item (menu,
object ? GIMP_VIEWABLE (object) : NULL);
}
}
}
void
gimp_container_menu_set_preview_size (GimpContainerMenu *menu,
gint preview_size,
gint preview_border_width)
{
g_return_if_fail (GIMP_IS_CONTAINER_MENU (menu));
g_return_if_fail (preview_size > 0 &&
preview_size <= GIMP_VIEWABLE_MAX_MENU_SIZE);
g_return_if_fail (preview_border_width >= 0 &&
preview_border_width <= GIMP_PREVIEW_MAX_BORDER_WIDTH);
if (menu->preview_size != preview_size ||
menu->preview_border_width != preview_border_width)
{
menu->preview_size = preview_size;
menu->preview_border_width = preview_border_width;
GIMP_CONTAINER_MENU_GET_CLASS (menu)->set_preview_size (menu);
}
}
void
gimp_container_menu_select_item (GimpContainerMenu *menu,
GimpViewable *viewable)
{
g_return_if_fail (GIMP_IS_CONTAINER_MENU (menu));
g_return_if_fail (! viewable || GIMP_IS_VIEWABLE (viewable));
if (menu->hash_table)
{
gpointer insert_data;
insert_data = g_hash_table_lookup (menu->hash_table, viewable);
g_signal_emit (menu, menu_signals[SELECT_ITEM], 0,
viewable, insert_data);
}
}
void
gimp_container_menu_activate_item (GimpContainerMenu *menu,
GimpViewable *viewable)
{
g_return_if_fail (GIMP_IS_CONTAINER_MENU (menu));
g_return_if_fail (GIMP_IS_VIEWABLE (viewable));
if (menu->hash_table)
{
gpointer insert_data;
insert_data = g_hash_table_lookup (menu->hash_table, viewable);
g_signal_emit (menu, menu_signals[ACTIVATE_ITEM], 0,
viewable, insert_data);
}
}
void
gimp_container_menu_context_item (GimpContainerMenu *menu,
GimpViewable *viewable)
{
g_return_if_fail (GIMP_IS_CONTAINER_MENU (menu));
g_return_if_fail (GIMP_IS_VIEWABLE (viewable));
if (menu->hash_table)
{
gpointer insert_data;
insert_data = g_hash_table_lookup (menu->hash_table, viewable);
g_signal_emit (menu, menu_signals[CONTEXT_ITEM], 0,
viewable, insert_data);
}
}
void
gimp_container_menu_item_selected (GimpContainerMenu *menu,
GimpViewable *viewable)
{
g_return_if_fail (GIMP_IS_CONTAINER_MENU (menu));
g_return_if_fail (GIMP_IS_VIEWABLE (viewable));
gimp_container_menu_select_item (menu, viewable);
if (menu->container && menu->context)
{
GimpContext *context;
/* ref and remember the context because menu->context may
* become NULL by calling gimp_context_set_by_type()
*/
context = g_object_ref (menu->context);
g_signal_handlers_block_by_func (context,
gimp_container_menu_context_changed,
menu);
gimp_context_set_by_type (context,
menu->container->children_type,
GIMP_OBJECT (viewable));
g_signal_handlers_unblock_by_func (context,
gimp_container_menu_context_changed,
menu);
g_object_unref (context);
}
}
void
gimp_container_menu_item_activated (GimpContainerMenu *menu,
GimpViewable *viewable)
{
g_return_if_fail (GIMP_IS_CONTAINER_MENU (menu));
g_return_if_fail (GIMP_IS_VIEWABLE (viewable));
gimp_container_menu_activate_item (menu, viewable);
}
void
gimp_container_menu_item_context (GimpContainerMenu *menu,
GimpViewable *viewable)
{
g_return_if_fail (GIMP_IS_CONTAINER_MENU (menu));
g_return_if_fail (GIMP_IS_VIEWABLE (viewable));
gimp_container_menu_context_item (menu, viewable);
}
static void
gimp_container_menu_clear_items (GimpContainerMenu *menu)
{
GIMP_CONTAINER_MENU_GET_CLASS (menu)->clear_items (menu);
}
static void
gimp_container_menu_real_clear_items (GimpContainerMenu *menu)
{
g_hash_table_destroy (menu->hash_table);
menu->hash_table = g_hash_table_new (g_direct_hash, g_direct_equal);
}
static void
gimp_container_menu_add_foreach (GimpViewable *viewable,
GimpContainerMenu *menu)
{
gpointer insert_data;
insert_data = GIMP_CONTAINER_MENU_GET_CLASS (menu)->insert_item (menu,
viewable,
-1);
g_hash_table_insert (menu->hash_table, viewable, insert_data);
}
static void
gimp_container_menu_add (GimpContainerMenu *menu,
GimpViewable *viewable,
GimpContainer *container)
{
gpointer insert_data;
gint index;
index = gimp_container_get_child_index (container,
GIMP_OBJECT (viewable));
insert_data = GIMP_CONTAINER_MENU_GET_CLASS (menu)->insert_item (menu,
viewable,
index);
g_hash_table_insert (menu->hash_table, viewable, insert_data);
}
static void
gimp_container_menu_remove (GimpContainerMenu *menu,
GimpViewable *viewable,
GimpContainer *container)
{
gpointer insert_data;
insert_data = g_hash_table_lookup (menu->hash_table, viewable);
if (insert_data)
{
GIMP_CONTAINER_MENU_GET_CLASS (menu)->remove_item (menu,
viewable,
insert_data);
g_hash_table_remove (menu->hash_table, viewable);
}
}
static void
gimp_container_menu_reorder (GimpContainerMenu *menu,
GimpViewable *viewable,
gint new_index,
GimpContainer *container)
{
gpointer insert_data;
insert_data = g_hash_table_lookup (menu->hash_table, viewable);
if (insert_data)
{
GIMP_CONTAINER_MENU_GET_CLASS (menu)->reorder_item (menu,
viewable,
new_index,
insert_data);
}
}
static void
gimp_container_menu_context_changed (GimpContext *context,
GimpViewable *viewable,
GimpContainerMenu *menu)
{
gpointer insert_data;
insert_data = g_hash_table_lookup (menu->hash_table, viewable);
g_signal_emit (menu, menu_signals[SELECT_ITEM], 0, viewable, insert_data);
}
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