gimp/libgimpwidgets/gimpintstore.c

242 lines
6.8 KiB
C

/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpintstore.c
* Copyright (C) 2004 Sven Neumann <sven@gimp.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h>
#include <gtk/gtk.h>
#include "gimpwidgetstypes.h"
#include "gimpintstore.h"
#include "libgimp/libgimp-intl.h"
static void gimp_int_store_class_init (GimpIntStoreClass *klass);
static void gimp_int_store_tree_model_init (GtkTreeModelIface *iface);
static void gimp_int_store_init (GimpIntStore *store);
static void gimp_int_store_finalize (GObject *object);
static void gimp_int_store_row_inserted (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter);
static void gimp_int_store_row_deleted (GtkTreeModel *model,
GtkTreePath *path);
static void gimp_int_store_add_empty (GimpIntStore *store);
static GtkListStoreClass *parent_class = NULL;
static GtkTreeModelIface *parent_iface = NULL;
GType
gimp_int_store_get_type (void)
{
static GType store_type = 0;
if (! store_type)
{
static const GTypeInfo store_info =
{
sizeof (GimpIntStoreClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gimp_int_store_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpIntStore),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_int_store_init
};
static const GInterfaceInfo iface_info =
{
(GInterfaceInitFunc) gimp_int_store_tree_model_init,
NULL, /* iface_finalize */
NULL /* iface_data */
};
store_type = g_type_register_static (GTK_TYPE_LIST_STORE,
"GimpIntStore",
&store_info, 0);
g_type_add_interface_static (store_type, GTK_TYPE_TREE_MODEL,
&iface_info);
}
return store_type;
}
static void
gimp_int_store_class_init (GimpIntStoreClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gimp_int_store_finalize;
}
static void
gimp_int_store_tree_model_init (GtkTreeModelIface *iface)
{
parent_iface = g_type_interface_peek_parent (iface);
iface->row_inserted = gimp_int_store_row_inserted;
iface->row_deleted = gimp_int_store_row_deleted;
}
static void
gimp_int_store_init (GimpIntStore *store)
{
GType types[GIMP_INT_STORE_NUM_COLUMNS] =
{
G_TYPE_INT, /* GIMP_INT_STORE_VALUE */
G_TYPE_STRING, /* GIMP_INT_STORE_LABEL */
G_TYPE_STRING, /* GIMP_INT_STORE_STOCK_ID */
GDK_TYPE_PIXBUF, /* GIMP_INT_STORE_PIXBUF */
G_TYPE_POINTER /* GIMP_INT_STORE_USER_DATA */
};
store->empty_iter = NULL;
gtk_list_store_set_column_types (GTK_LIST_STORE (store),
GIMP_INT_STORE_NUM_COLUMNS, types);
gimp_int_store_add_empty (store);
}
static void
gimp_int_store_finalize (GObject *object)
{
GimpIntStore *store = GIMP_INT_STORE (object);
if (store->empty_iter)
{
gtk_tree_iter_free (store->empty_iter);
store->empty_iter = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_int_store_row_inserted (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter)
{
GimpIntStore *store = GIMP_INT_STORE (model);
if (parent_iface->row_inserted)
parent_iface->row_inserted (model, path, iter);
if (store->empty_iter &&
memcmp (iter, store->empty_iter, sizeof (GtkTreeIter)))
{
gtk_list_store_remove (GTK_LIST_STORE (store), store->empty_iter);
gtk_tree_iter_free (store->empty_iter);
store->empty_iter = NULL;
}
}
static void
gimp_int_store_row_deleted (GtkTreeModel *model,
GtkTreePath *path)
{
if (parent_iface->row_deleted)
parent_iface->row_deleted (model, path);
if (gtk_tree_model_iter_n_children (model, NULL) == 0)
gimp_int_store_add_empty (GIMP_INT_STORE (model));
}
static void
gimp_int_store_add_empty (GimpIntStore *store)
{
g_return_if_fail (store->empty_iter == NULL);
store->empty_iter = g_new (GtkTreeIter, 1);
gtk_list_store_prepend (GTK_LIST_STORE (store), store->empty_iter);
gtk_list_store_set (GTK_LIST_STORE (store), store->empty_iter,
GIMP_INT_STORE_VALUE, -1,
GIMP_INT_STORE_LABEL, (_("(Empty)")),
-1);
}
/**
* gimp_int_store_new:
*
* Creates a #GtkListStore with a number of useful columns.
* #GimpIntStore is especially useful if the items you want to store
* are identified using an integer value.
*
* Return value: a new #GimpIntStore.
*
* Since: GIMP 2.2
**/
GtkListStore *
gimp_int_store_new (void)
{
return g_object_new (GIMP_TYPE_INT_STORE, NULL);
}
/**
* gimp_int_store_lookup_by_value:
* @model: a #GimpIntStore
* @value: an integer value to lookup in the @model
* @iter: return location for the iter of the given @value
*
* Iterate over the @model looking for @value.
*
* Return value: %TRUE if the value has been located and @iter is
* valid, %FALSE otherwise.
*
* Since: GIMP 2.2
**/
gboolean
gimp_int_store_lookup_by_value (GtkTreeModel *model,
gint value,
GtkTreeIter *iter)
{
gboolean iter_valid;
g_return_val_if_fail (GTK_IS_TREE_MODEL (model), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
for (iter_valid = gtk_tree_model_get_iter_first (model, iter);
iter_valid;
iter_valid = gtk_tree_model_iter_next (model, iter))
{
gint this;
gtk_tree_model_get (model, iter,
GIMP_INT_STORE_VALUE, &this,
-1);
if (this == value)
break;
}
return iter_valid;
}