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gtk2/gtk/gtktoggletoolbutton.c

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/* gtktoggletoolbutton.c
*
* Copyright (C) 2002 Anders Carlsson <andersca@gnome.org>
* 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 "config.h"
#include "gtktoggletoolbutton.h"
#include "gtkcheckmenuitem.h"
#include "gtklabel.h"
#include "gtktogglebutton.h"
#include "gtkstock.h"
#include "gtkintl.h"
#include "gtkradiotoolbutton.h"
#include "gtktoggleaction.h"
#include "gtkactivatable.h"
#include "gtkprivate.h"
#define MENU_ID "gtk-toggle-tool-button-menu-id"
enum {
TOGGLED,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_ACTIVE
};
#define GTK_TOGGLE_TOOL_BUTTON_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_TOGGLE_TOOL_BUTTON, GtkToggleToolButtonPrivate))
struct _GtkToggleToolButtonPrivate
{
guint active : 1;
};
static void gtk_toggle_tool_button_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_toggle_tool_button_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static gboolean gtk_toggle_tool_button_create_menu_proxy (GtkToolItem *button);
static void button_toggled (GtkWidget *widget,
GtkToggleToolButton *button);
static void menu_item_activated (GtkWidget *widget,
GtkToggleToolButton *button);
static void gtk_toggle_tool_button_activatable_interface_init (GtkActivatableIface *iface);
static void gtk_toggle_tool_button_update (GtkActivatable *activatable,
GtkAction *action,
const gchar *property_name);
static void gtk_toggle_tool_button_sync_action_properties (GtkActivatable *activatable,
GtkAction *action);
static GtkActivatableIface *parent_activatable_iface;
static guint toggle_signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE_WITH_CODE (GtkToggleToolButton, gtk_toggle_tool_button, GTK_TYPE_TOOL_BUTTON,
G_IMPLEMENT_INTERFACE (GTK_TYPE_ACTIVATABLE,
gtk_toggle_tool_button_activatable_interface_init))
static void
gtk_toggle_tool_button_class_init (GtkToggleToolButtonClass *klass)
{
GObjectClass *object_class;
GtkToolItemClass *toolitem_class;
GtkToolButtonClass *toolbutton_class;
object_class = (GObjectClass *)klass;
toolitem_class = (GtkToolItemClass *)klass;
toolbutton_class = (GtkToolButtonClass *)klass;
object_class->set_property = gtk_toggle_tool_button_set_property;
object_class->get_property = gtk_toggle_tool_button_get_property;
toolitem_class->create_menu_proxy = gtk_toggle_tool_button_create_menu_proxy;
toolbutton_class->button_type = GTK_TYPE_TOGGLE_BUTTON;
/**
* GtkToggleToolButton:active:
*
* If the toggle tool button should be pressed in or not.
*
* Since: 2.8
*/
g_object_class_install_property (object_class,
PROP_ACTIVE,
g_param_spec_boolean ("active",
P_("Active"),
P_("If the toggle button should be pressed in or not"),
FALSE,
GTK_PARAM_READWRITE));
/**
* GtkToggleToolButton::toggled:
* @toggle_tool_button: the object that emitted the signal
*
* Emitted whenever the toggle tool button changes state.
**/
toggle_signals[TOGGLED] =
g_signal_new (I_("toggled"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkToggleToolButtonClass, toggled),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
g_type_class_add_private (object_class, sizeof (GtkToggleToolButtonPrivate));
}
static void
gtk_toggle_tool_button_init (GtkToggleToolButton *button)
{
GtkToolButton *tool_button = GTK_TOOL_BUTTON (button);
GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (_gtk_tool_button_get_button (tool_button));
button->priv = GTK_TOGGLE_TOOL_BUTTON_GET_PRIVATE (button);
/* If the real button is a radio button, it may have been
* active at the time it was created.
*/
button->priv->active = gtk_toggle_button_get_active (toggle_button);
g_signal_connect_object (toggle_button,
"toggled", G_CALLBACK (button_toggled), button, 0);
}
static void
gtk_toggle_tool_button_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkToggleToolButton *button = GTK_TOGGLE_TOOL_BUTTON (object);
switch (prop_id)
{
case PROP_ACTIVE:
gtk_toggle_tool_button_set_active (button,
g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_toggle_tool_button_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkToggleToolButton *button = GTK_TOGGLE_TOOL_BUTTON (object);
switch (prop_id)
{
case PROP_ACTIVE:
g_value_set_boolean (value, gtk_toggle_tool_button_get_active (button));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gtk_toggle_tool_button_create_menu_proxy (GtkToolItem *item)
{
GtkToolButton *tool_button = GTK_TOOL_BUTTON (item);
GtkToggleToolButton *toggle_tool_button = GTK_TOGGLE_TOOL_BUTTON (item);
GtkWidget *menu_item = NULL;
GtkStockItem stock_item;
gboolean use_mnemonic = TRUE;
const char *label;
GtkWidget *label_widget;
const gchar *label_text;
const gchar *stock_id;
if (_gtk_tool_item_create_menu_proxy (item))
return TRUE;
label_widget = gtk_tool_button_get_label_widget (tool_button);
label_text = gtk_tool_button_get_label (tool_button);
stock_id = gtk_tool_button_get_stock_id (tool_button);
if (GTK_IS_LABEL (label_widget))
{
label = gtk_label_get_label (GTK_LABEL (label_widget));
use_mnemonic = gtk_label_get_use_underline (GTK_LABEL (label_widget));
}
else if (label_text)
{
label = label_text;
use_mnemonic = gtk_tool_button_get_use_underline (tool_button);
}
else if (stock_id && gtk_stock_lookup (stock_id, &stock_item))
{
label = stock_item.label;
}
else
{
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->priv->active);
if (GTK_IS_RADIO_TOOL_BUTTON (toggle_tool_button))
{
gtk_check_menu_item_set_draw_as_radio (GTK_CHECK_MENU_ITEM (menu_item),
TRUE);
}
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);
gtk_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,
GtkToggleToolButton *toggle_tool_button)
{
GtkToolButton *tool_button = GTK_TOOL_BUTTON (toggle_tool_button);
gboolean menu_active = gtk_check_menu_item_get_active (GTK_CHECK_MENU_ITEM (menu_item));
if (toggle_tool_button->priv->active != menu_active)
{
toggle_tool_button->priv->active = menu_active;
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (_gtk_tool_button_get_button (tool_button)),
toggle_tool_button->priv->active);
g_object_notify (G_OBJECT (toggle_tool_button), "active");
g_signal_emit (toggle_tool_button, toggle_signals[TOGGLED], 0);
}
}
static void
button_toggled (GtkWidget *widget,
GtkToggleToolButton *toggle_tool_button)
{
gboolean toggle_active = GTK_TOGGLE_BUTTON (widget)->active;
if (toggle_tool_button->priv->active != toggle_active)
{
GtkWidget *menu_item;
toggle_tool_button->priv->active = toggle_active;
if ((menu_item =
gtk_tool_item_get_proxy_menu_item (GTK_TOOL_ITEM (toggle_tool_button), MENU_ID)))
{
gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (menu_item),
toggle_tool_button->priv->active);
}
g_object_notify (G_OBJECT (toggle_tool_button), "active");
g_signal_emit (toggle_tool_button, toggle_signals[TOGGLED], 0);
}
}
static void
gtk_toggle_tool_button_activatable_interface_init (GtkActivatableIface *iface)
{
parent_activatable_iface = g_type_interface_peek_parent (iface);
iface->update = gtk_toggle_tool_button_update;
iface->sync_action_properties = gtk_toggle_tool_button_sync_action_properties;
}
static void
gtk_toggle_tool_button_update (GtkActivatable *activatable,
GtkAction *action,
const gchar *property_name)
{
GtkToggleToolButton *button;
parent_activatable_iface->update (activatable, action, property_name);
button = GTK_TOGGLE_TOOL_BUTTON (activatable);
if (strcmp (property_name, "active") == 0)
{
gtk_action_block_activate (action);
gtk_toggle_tool_button_set_active (button, gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)));
gtk_action_unblock_activate (action);
}
}
static void
gtk_toggle_tool_button_sync_action_properties (GtkActivatable *activatable,
GtkAction *action)
{
GtkToggleToolButton *button;
parent_activatable_iface->sync_action_properties (activatable, action);
if (!GTK_IS_TOGGLE_ACTION (action))
return;
button = GTK_TOGGLE_TOOL_BUTTON (activatable);
gtk_action_block_activate (action);
gtk_toggle_tool_button_set_active (button, gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)));
gtk_action_unblock_activate (action);
}
/**
* gtk_toggle_tool_button_new:
*
* Returns a new #GtkToggleToolButton
*
* Return value: a newly created #GtkToggleToolButton
*
* Since: 2.4
**/
GtkToolItem *
gtk_toggle_tool_button_new (void)
{
GtkToolButton *button;
button = g_object_new (GTK_TYPE_TOGGLE_TOOL_BUTTON,
NULL);
return GTK_TOOL_ITEM (button);
}
/**
* gtk_toggle_tool_button_new_from_stock:
* @stock_id: the name of the stock item
*
* Creates a new #GtkToggleToolButton containing the image and text from a
* stock item. Some stock ids have preprocessor macros like #GTK_STOCK_OK
* and #GTK_STOCK_APPLY.
*
* It is an error if @stock_id is not a name of a stock item.
*
* Return value: A new #GtkToggleToolButton
*
* Since: 2.4
**/
GtkToolItem *
gtk_toggle_tool_button_new_from_stock (const gchar *stock_id)
{
GtkToolButton *button;
g_return_val_if_fail (stock_id != NULL, NULL);
button = g_object_new (GTK_TYPE_TOGGLE_TOOL_BUTTON,
"stock-id", stock_id,
NULL);
return GTK_TOOL_ITEM (button);
}
/**
* gtk_toggle_tool_button_set_active:
* @button: a #GtkToggleToolButton
* @is_active: whether @button should be active
*
* Sets the status of the toggle tool button. Set to %TRUE if you
* want the GtkToggleButton to be 'pressed in', and %FALSE to raise it.
* This action causes the toggled signal to be emitted.
*
* Since: 2.4
**/
void
gtk_toggle_tool_button_set_active (GtkToggleToolButton *button,
gboolean is_active)
{
g_return_if_fail (GTK_IS_TOGGLE_TOOL_BUTTON (button));
is_active = is_active != FALSE;
if (button->priv->active != is_active)
gtk_button_clicked (GTK_BUTTON (_gtk_tool_button_get_button (GTK_TOOL_BUTTON (button))));
}
/**
* gtk_toggle_tool_button_get_active:
* @button: a #GtkToggleToolButton
*
* Queries a #GtkToggleToolButton and returns its current state.
* Returns %TRUE if the toggle button is pressed in and %FALSE if it is raised.
*
* Return value: %TRUE if the toggle tool button is pressed in, %FALSE if not
*
* Since: 2.4
**/
gboolean
gtk_toggle_tool_button_get_active (GtkToggleToolButton *button)
{
g_return_val_if_fail (GTK_IS_TOGGLE_TOOL_BUTTON (button), FALSE);
return button->priv->active;
}
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