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/* eggtoggletoolbutton.c
*
* Copyright (C) 2002 Anders Carlsson <andersca@codefactory.se>
* Copyright (C) 2002 James Henstridge <james@daa.com.au>
*
* 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 "eggtoggletoolbutton.h"
#include <gtk/gtkcheckmenuitem.h>
#include <gtk/gtklabel.h>
#include <gtk/gtktogglebutton.h>
#include <gtk/gtkstock.h>
#ifndef _
# define _(s) (s)
#endif
#define MENU_ID "egg-toggle-tool-button-menu-id"
enum {
TOGGLED,
LAST_SIGNAL
};
static void egg_toggle_tool_button_init (EggToggleToolButton *button);
static void egg_toggle_tool_button_class_init (EggToggleToolButtonClass *klass);
static gboolean egg_toggle_tool_button_create_menu_proxy (EggToolItem *button);
static void button_toggled (GtkWidget *widget,
EggToggleToolButton *button);
static void menu_item_activated (GtkWidget *widget,
EggToggleToolButton *button);
static GObjectClass *parent_class = NULL;
static guint toggle_signals[LAST_SIGNAL] = { 0 };
GType
egg_toggle_tool_button_get_type (void)
{
static GType type = 0;
if (!type)
{
static const GTypeInfo type_info =
{
sizeof (EggToggleToolButtonClass),
(GBaseInitFunc) 0,
(GBaseFinalizeFunc) 0,
(GClassInitFunc) egg_toggle_tool_button_class_init,
(GClassFinalizeFunc) 0,
NULL,
sizeof (EggToggleToolButton),
0, /* n_preallocs */
(GInstanceInitFunc) egg_toggle_tool_button_init
};
type = g_type_register_static (EGG_TYPE_TOOL_BUTTON,
"EggToggleToolButton", &type_info, 0);
}
return type;
}
static void
egg_toggle_tool_button_class_init (EggToggleToolButtonClass *klass)
{
GObjectClass *object_class;
EggToolItemClass *toolitem_class;
EggToolButtonClass *toolbutton_class;
parent_class = g_type_class_peek_parent (klass);
object_class = (GObjectClass *)klass;
toolitem_class = (EggToolItemClass *)klass;
toolbutton_class = (EggToolButtonClass *)klass;
toolitem_class->create_menu_proxy = egg_toggle_tool_button_create_menu_proxy;
toolbutton_class->button_type = GTK_TYPE_TOGGLE_BUTTON;
toggle_signals[TOGGLED] =
g_signal_new ("toggled",
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (EggToggleToolButtonClass, toggled),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
egg_toggle_tool_button_init (EggToggleToolButton *button)
{
g_signal_connect_object (EGG_TOOL_BUTTON (button)->button, "toggled",
G_CALLBACK (button_toggled), button, 0);
}
static gboolean
egg_toggle_tool_button_create_menu_proxy (EggToolItem *item)
{
EggToolButton *tool_button = EGG_TOOL_BUTTON (item);
EggToggleToolButton *toggle_tool_button = EGG_TOGGLE_TOOL_BUTTON (item);
GtkWidget *menu_item = NULL;
GtkStockItem stock_item;
gboolean use_mnemonic = TRUE;
const char *label = "";
if (tool_button->label_widget && GTK_IS_LABEL (tool_button->label_widget))
label = gtk_label_get_label (GTK_LABEL (tool_button->label_widget));
else if (tool_button->label_text)
{
label = tool_button->label_text;
use_mnemonic = tool_button->use_underline;
}
else if (tool_button->stock_id && gtk_stock_lookup (tool_button->stock_id, &stock_item))
label = stock_item.label;
if (use_mnemonic)
menu_item = gtk_check_menu_item_new_with_mnemonic (label);
else
menu_item = gtk_check_menu_item_new_with_label (label);
gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (menu_item),
toggle_tool_button->active);
g_signal_connect_closure_by_id (menu_item,
g_signal_lookup ("activate", G_OBJECT_TYPE (menu_item)), 0,
g_cclosure_new_object (G_CALLBACK (menu_item_activated),
G_OBJECT (toggle_tool_button)),
FALSE);
egg_tool_item_set_proxy_menu_item (item, MENU_ID, menu_item);
return TRUE;
}
/* There are two activatable widgets, a toggle button and a menu item.
*
* If a widget is activated and the state of the tool button is the same as
* the new state of the activated widget, then the other widget was the one
* that was activated by the user and updated the tool button's state.
*
* If the state of the tool button is not the same as the new state of the
* activated widget, then the activation was activated by the user, and the
* widget needs to make sure the tool button is updated before the other
* widget is activated. This will make sure the other widget a tool button
* in a state that matches its own new state.
*/
static void
menu_item_activated (GtkWidget *menu_item,
EggToggleToolButton *toggle_tool_button)
{
EggToolButton *tool_button = EGG_TOOL_BUTTON (toggle_tool_button);
gboolean menu_active = gtk_check_menu_item_get_active (GTK_CHECK_MENU_ITEM (menu_item));
if (toggle_tool_button->active != menu_active)
{
toggle_tool_button->active = menu_active;
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (tool_button->button),
toggle_tool_button->active);
g_signal_emit (G_OBJECT (toggle_tool_button), toggle_signals[TOGGLED], 0);
}
}
static void
button_toggled (GtkWidget *widget,
EggToggleToolButton *toggle_tool_button)
{
gboolean toggle_active = GTK_TOGGLE_BUTTON (widget)->active;
if (toggle_tool_button->active != toggle_active)
{
GtkWidget *menu_item;
toggle_tool_button->active = toggle_active;
if ((menu_item =
egg_tool_item_get_proxy_menu_item (EGG_TOOL_ITEM (toggle_tool_button), MENU_ID)))
{
gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (menu_item),
toggle_tool_button->active);
}
g_signal_emit (G_OBJECT (toggle_tool_button), toggle_signals[TOGGLED], 0);
}
}
EggToolItem *
egg_toggle_tool_button_new (void)
{
EggToolButton *button;
button = g_object_new (EGG_TYPE_TOGGLE_TOOL_BUTTON,
NULL);
return EGG_TOOL_ITEM (button);
}
EggToolItem *
egg_toggle_tool_button_new_from_stock (const gchar *stock_id)
{
EggToolButton *button;
g_return_val_if_fail (stock_id != NULL, NULL);
button = g_object_new (EGG_TYPE_TOGGLE_TOOL_BUTTON,
"stock_id", stock_id,
NULL);
return EGG_TOOL_ITEM (button);
}
void
egg_toggle_tool_button_set_active (EggToggleToolButton *button,
gboolean is_active)
{
g_return_if_fail (EGG_IS_TOGGLE_TOOL_BUTTON (button));
is_active = is_active != FALSE;
if (button->active != is_active)
gtk_button_clicked (GTK_BUTTON (EGG_TOOL_BUTTON (button)->button));
}
gboolean
egg_toggle_tool_button_get_active (EggToggleToolButton *button)
{
g_return_val_if_fail (EGG_IS_TOGGLE_TOOL_BUTTON (button), FALSE);
return button->active;
}
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