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gtk2/gtk/gtkmenutoolbutton.c

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/* GTK - The GIMP Toolkit
*
* Copyright (C) 2003 Ricardo Fernandez Pascual
* Copyright (C) 2004 Paolo Borelli
*
* 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 "gtkmenutoolbutton.h"
#include "gtktogglebutton.h"
#include "gtkarrow.h"
#include "gtkhbox.h"
#include "gtkvbox.h"
#include "gtkmenu.h"
#include "gtkmain.h"
#include "gtksizerequest.h"
#include "gtkbuildable.h"
#include "gtkprivate.h"
#include "gtkintl.h"
/**
* SECTION:gtkmenutoolbutton
* @Short_description: A GtkToolItem containing a button with an additional dropdown menu
* @Title: GtkMenuToolButton
* @See_also: #GtkToolbar, #GtkToolButton
*
* A #GtkMenuToolButton is a #GtkToolItem that contains a button and
* a small additional button with an arrow. When clicked, the arrow
* button pops up a dropdown menu.
*
* Use gtk_menu_tool_button_new() to create a new
* #GtkMenuToolButton. Use gtk_menu_tool_button_new_from_stock() to
* create a new #GtkMenuToolButton containing a stock item.
*
* <refsect2 id="GtkMenuToolButton-BUILDER-UI">
* <title>GtkMenuToolButton as GtkBuildable</title>
* <para>
* The GtkMenuToolButton implementation of the GtkBuildable interface
* supports adding a menu by specifying "menu" as the "type"
* attribute of a &lt;child&gt; element.
*
* <example>
* <title>A UI definition fragment with menus</title>
* <programlisting><![CDATA[
* <object class="GtkMenuToolButton">
* <child type="menu">
* <object class="GtkMenu"/>
* </child>
* </object>
* ]]></programlisting>
* </example>
* </para>
* </refsect2>
*/
struct _GtkMenuToolButtonPrivate
{
GtkWidget *button;
GtkWidget *arrow;
GtkWidget *arrow_button;
GtkWidget *box;
GtkMenu *menu;
};
static void gtk_menu_tool_button_destroy (GtkWidget *widget);
static int menu_deactivate_cb (GtkMenuShell *menu_shell,
GtkMenuToolButton *button);
static void gtk_menu_tool_button_buildable_interface_init (GtkBuildableIface *iface);
static void gtk_menu_tool_button_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type);
enum
{
SHOW_MENU,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_MENU
};
static gint signals[LAST_SIGNAL];
static GtkBuildableIface *parent_buildable_iface;
G_DEFINE_TYPE_WITH_CODE (GtkMenuToolButton, gtk_menu_tool_button, GTK_TYPE_TOOL_BUTTON,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_menu_tool_button_buildable_interface_init))
static void
gtk_menu_tool_button_construct_contents (GtkMenuToolButton *button)
{
GtkMenuToolButtonPrivate *priv = button->priv;
GtkWidget *box;
GtkWidget *parent;
GtkOrientation orientation;
orientation = gtk_tool_item_get_orientation (GTK_TOOL_ITEM (button));
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_arrow_set (GTK_ARROW (priv->arrow), GTK_ARROW_DOWN, GTK_SHADOW_NONE);
}
else
{
box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_arrow_set (GTK_ARROW (priv->arrow), GTK_ARROW_RIGHT, GTK_SHADOW_NONE);
}
parent = gtk_widget_get_parent (priv->button);
if (priv->button && parent)
{
g_object_ref (priv->button);
gtk_container_remove (GTK_CONTAINER (parent),
priv->button);
gtk_container_add (GTK_CONTAINER (box), priv->button);
g_object_unref (priv->button);
}
parent = gtk_widget_get_parent (priv->arrow_button);
if (priv->arrow_button && parent)
{
g_object_ref (priv->arrow_button);
gtk_container_remove (GTK_CONTAINER (parent),
priv->arrow_button);
gtk_box_pack_end (GTK_BOX (box), priv->arrow_button,
FALSE, FALSE, 0);
g_object_unref (priv->arrow_button);
}
if (priv->box)
{
gchar *tmp;
/* Transfer a possible tooltip to the new box */
g_object_get (priv->box, "tooltip-markup", &tmp, NULL);
if (tmp)
{
g_object_set (box, "tooltip-markup", tmp, NULL);
g_free (tmp);
}
/* Note: we are not destroying the button and the arrow_button
* here because they were removed from their container above
*/
gtk_widget_destroy (priv->box);
}
priv->box = box;
gtk_container_add (GTK_CONTAINER (button), priv->box);
gtk_widget_show_all (priv->box);
gtk_button_set_relief (GTK_BUTTON (priv->arrow_button),
gtk_tool_item_get_relief_style (GTK_TOOL_ITEM (button)));
gtk_widget_queue_resize (GTK_WIDGET (button));
}
static void
gtk_menu_tool_button_toolbar_reconfigured (GtkToolItem *toolitem)
{
gtk_menu_tool_button_construct_contents (GTK_MENU_TOOL_BUTTON (toolitem));
/* chain up */
GTK_TOOL_ITEM_CLASS (gtk_menu_tool_button_parent_class)->toolbar_reconfigured (toolitem);
}
static void
gtk_menu_tool_button_state_changed (GtkWidget *widget,
GtkStateType previous_state)
{
GtkMenuToolButton *button = GTK_MENU_TOOL_BUTTON (widget);
GtkMenuToolButtonPrivate *priv = button->priv;
if (!gtk_widget_is_sensitive (widget) && priv->menu)
{
gtk_menu_shell_deactivate (GTK_MENU_SHELL (priv->menu));
}
}
static void
gtk_menu_tool_button_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkMenuToolButton *button = GTK_MENU_TOOL_BUTTON (object);
switch (prop_id)
{
case PROP_MENU:
gtk_menu_tool_button_set_menu (button, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_menu_tool_button_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkMenuToolButton *button = GTK_MENU_TOOL_BUTTON (object);
switch (prop_id)
{
case PROP_MENU:
g_value_set_object (value, button->priv->menu);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_menu_tool_button_class_init (GtkMenuToolButtonClass *klass)
{
GObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkToolItemClass *toolitem_class;
object_class = (GObjectClass *)klass;
widget_class = (GtkWidgetClass *)klass;
toolitem_class = (GtkToolItemClass *)klass;
object_class->set_property = gtk_menu_tool_button_set_property;
object_class->get_property = gtk_menu_tool_button_get_property;
widget_class->destroy = gtk_menu_tool_button_destroy;
widget_class->state_changed = gtk_menu_tool_button_state_changed;
toolitem_class->toolbar_reconfigured = gtk_menu_tool_button_toolbar_reconfigured;
/**
* GtkMenuToolButton::show-menu:
* @button: the object on which the signal is emitted
*
* The ::show-menu signal is emitted before the menu is shown.
*
* It can be used to populate the menu on demand, using
* gtk_menu_tool_button_get_menu().
* Note that even if you populate the menu dynamically in this way,
* you must set an empty menu on the #GtkMenuToolButton beforehand,
* since the arrow is made insensitive if the menu is not set.
*/
signals[SHOW_MENU] =
g_signal_new (I_("show-menu"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkMenuToolButtonClass, show_menu),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
g_object_class_install_property (object_class,
PROP_MENU,
g_param_spec_object ("menu",
P_("Menu"),
P_("The dropdown menu"),
GTK_TYPE_MENU,
GTK_PARAM_READWRITE));
g_type_class_add_private (object_class, sizeof (GtkMenuToolButtonPrivate));
}
static void
menu_position_func (GtkMenu *menu,
int *x,
int *y,
gboolean *push_in,
GtkMenuToolButton *button)
{
GtkMenuToolButtonPrivate *priv = button->priv;
GtkAllocation arrow_allocation;
GtkWidget *widget = GTK_WIDGET (button);
GtkRequisition req;
GtkRequisition menu_req;
GtkOrientation orientation;
GtkTextDirection direction;
GdkRectangle monitor;
gint monitor_num;
GdkScreen *screen;
GdkWindow *window;
gtk_widget_get_preferred_size (GTK_WIDGET (priv->menu),
&menu_req, NULL);
orientation = gtk_tool_item_get_orientation (GTK_TOOL_ITEM (button));
direction = gtk_widget_get_direction (widget);
window = gtk_widget_get_window (widget);
screen = gtk_widget_get_screen (GTK_WIDGET (menu));
monitor_num = gdk_screen_get_monitor_at_window (screen, window);
if (monitor_num < 0)
monitor_num = 0;
gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
GtkAllocation allocation;
gtk_widget_get_allocation (widget, &allocation);
gtk_widget_get_allocation (priv->arrow_button, &arrow_allocation);
gdk_window_get_origin (window, x, y);
*x += allocation.x;
*y += allocation.y;
if (direction == GTK_TEXT_DIR_LTR)
*x += MAX (allocation.width - menu_req.width, 0);
else if (menu_req.width > allocation.width)
*x -= menu_req.width - allocation.width;
if ((*y + arrow_allocation.height + menu_req.height) <= monitor.y + monitor.height)
*y += arrow_allocation.height;
else if ((*y - menu_req.height) >= monitor.y)
*y -= menu_req.height;
else if (monitor.y + monitor.height - (*y + arrow_allocation.height) > *y)
*y += arrow_allocation.height;
else
*y -= menu_req.height;
}
else
{
gdk_window_get_origin (gtk_button_get_event_window (GTK_BUTTON (priv->arrow_button)), x, y);
gtk_widget_get_preferred_size (priv->arrow_button,
&req, NULL);
gtk_widget_get_allocation (priv->arrow_button, &arrow_allocation);
if (direction == GTK_TEXT_DIR_LTR)
*x += arrow_allocation.width;
else
*x -= menu_req.width;
if (*y + menu_req.height > monitor.y + monitor.height &&
*y + arrow_allocation.height - monitor.y > monitor.y + monitor.height - *y)
*y += arrow_allocation.height - menu_req.height;
}
*push_in = FALSE;
}
static void
popup_menu_under_arrow (GtkMenuToolButton *button,
GdkEventButton *event)
{
GtkMenuToolButtonPrivate *priv = button->priv;
g_signal_emit (button, signals[SHOW_MENU], 0);
if (!priv->menu)
return;
gtk_menu_popup (priv->menu, NULL, NULL,
(GtkMenuPositionFunc) menu_position_func,
button,
event ? event->button : 0,
event ? event->time : gtk_get_current_event_time ());
}
static void
arrow_button_toggled_cb (GtkToggleButton *togglebutton,
GtkMenuToolButton *button)
{
GtkMenuToolButtonPrivate *priv = button->priv;
if (!priv->menu)
return;
if (gtk_toggle_button_get_active (togglebutton) &&
!gtk_widget_get_visible (GTK_WIDGET (priv->menu)))
{
/* we get here only when the menu is activated by a key
* press, so that we can select the first menu item */
popup_menu_under_arrow (button, NULL);
gtk_menu_shell_select_first (GTK_MENU_SHELL (priv->menu), FALSE);
}
}
static gboolean
arrow_button_button_press_event_cb (GtkWidget *widget,
GdkEventButton *event,
GtkMenuToolButton *button)
{
if (event->button == 1)
{
popup_menu_under_arrow (button, event);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (widget), TRUE);
return TRUE;
}
else
{
return FALSE;
}
}
static void
gtk_menu_tool_button_init (GtkMenuToolButton *button)
{
GtkWidget *box;
GtkWidget *arrow;
GtkWidget *arrow_button;
GtkWidget *real_button;
button->priv = G_TYPE_INSTANCE_GET_PRIVATE (button,
GTK_TYPE_MENU_TOOL_BUTTON,
GtkMenuToolButtonPrivate);
gtk_tool_item_set_homogeneous (GTK_TOOL_ITEM (button), FALSE);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
real_button = gtk_bin_get_child (GTK_BIN (button));
g_object_ref (real_button);
gtk_container_remove (GTK_CONTAINER (button), real_button);
gtk_container_add (GTK_CONTAINER (box), real_button);
g_object_unref (real_button);
arrow_button = gtk_toggle_button_new ();
arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
gtk_container_add (GTK_CONTAINER (arrow_button), arrow);
gtk_box_pack_end (GTK_BOX (box), arrow_button,
FALSE, FALSE, 0);
/* the arrow button is insentive until we set a menu */
gtk_widget_set_sensitive (arrow_button, FALSE);
gtk_widget_show_all (box);
gtk_container_add (GTK_CONTAINER (button), box);
button->priv->button = real_button;
button->priv->arrow = arrow;
button->priv->arrow_button = arrow_button;
button->priv->box = box;
g_signal_connect (arrow_button, "toggled",
G_CALLBACK (arrow_button_toggled_cb), button);
g_signal_connect (arrow_button, "button-press-event",
G_CALLBACK (arrow_button_button_press_event_cb), button);
}
static void
gtk_menu_tool_button_destroy (GtkWidget *widget)
{
GtkMenuToolButton *button = GTK_MENU_TOOL_BUTTON (widget);
if (button->priv->menu)
{
g_signal_handlers_disconnect_by_func (button->priv->menu,
menu_deactivate_cb,
button);
gtk_menu_detach (button->priv->menu);
g_signal_handlers_disconnect_by_func (button->priv->arrow_button,
arrow_button_toggled_cb,
button);
g_signal_handlers_disconnect_by_func (button->priv->arrow_button,
arrow_button_button_press_event_cb,
button);
}
GTK_WIDGET_CLASS (gtk_menu_tool_button_parent_class)->destroy (widget);
}
static void
gtk_menu_tool_button_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type)
{
if (type && strcmp (type, "menu") == 0)
gtk_menu_tool_button_set_menu (GTK_MENU_TOOL_BUTTON (buildable),
GTK_WIDGET (child));
else
parent_buildable_iface->add_child (buildable, builder, child, type);
}
static void
gtk_menu_tool_button_buildable_interface_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = gtk_menu_tool_button_buildable_add_child;
}
/**
* gtk_menu_tool_button_new:
* @icon_widget: (allow-none): a widget that will be used as icon widget, or %NULL
* @label: (allow-none): a string that will be used as label, or %NULL
*
* Creates a new #GtkMenuToolButton using @icon_widget as icon and
* @label as label.
*
* Return value: the new #GtkMenuToolButton
*
* Since: 2.6
**/
GtkToolItem *
gtk_menu_tool_button_new (GtkWidget *icon_widget,
const gchar *label)
{
GtkMenuToolButton *button;
button = g_object_new (GTK_TYPE_MENU_TOOL_BUTTON, NULL);
if (label)
gtk_tool_button_set_label (GTK_TOOL_BUTTON (button), label);
if (icon_widget)
gtk_tool_button_set_icon_widget (GTK_TOOL_BUTTON (button), icon_widget);
return GTK_TOOL_ITEM (button);
}
/**
* gtk_menu_tool_button_new_from_stock:
* @stock_id: the name of a stock item
*
* Creates a new #GtkMenuToolButton.
* The new #GtkMenuToolButton will contain an icon and label from
* the stock item indicated by @stock_id.
*
* Return value: the new #GtkMenuToolButton
*
* Since: 2.6
**/
GtkToolItem *
gtk_menu_tool_button_new_from_stock (const gchar *stock_id)
{
GtkMenuToolButton *button;
g_return_val_if_fail (stock_id != NULL, NULL);
button = g_object_new (GTK_TYPE_MENU_TOOL_BUTTON,
"stock-id", stock_id,
NULL);
return GTK_TOOL_ITEM (button);
}
/* Callback for the "deactivate" signal on the pop-up menu.
* This is used so that we unset the state of the toggle button
* when the pop-up menu disappears.
*/
static int
menu_deactivate_cb (GtkMenuShell *menu_shell,
GtkMenuToolButton *button)
{
GtkMenuToolButtonPrivate *priv = button->priv;
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->arrow_button), FALSE);
return TRUE;
}
static void
menu_detacher (GtkWidget *widget,
GtkMenu *menu)
{
GtkMenuToolButtonPrivate *priv = GTK_MENU_TOOL_BUTTON (widget)->priv;
g_return_if_fail (priv->menu == menu);
priv->menu = NULL;
}
/**
* gtk_menu_tool_button_set_menu:
* @button: a #GtkMenuToolButton
* @menu: the #GtkMenu associated with #GtkMenuToolButton
*
* Sets the #GtkMenu that is popped up when the user clicks on the arrow.
* If @menu is NULL, the arrow button becomes insensitive.
*
* Since: 2.6
**/
void
gtk_menu_tool_button_set_menu (GtkMenuToolButton *button,
GtkWidget *menu)
{
GtkMenuToolButtonPrivate *priv;
g_return_if_fail (GTK_IS_MENU_TOOL_BUTTON (button));
g_return_if_fail (GTK_IS_MENU (menu) || menu == NULL);
priv = button->priv;
if (priv->menu != GTK_MENU (menu))
{
if (priv->menu && gtk_widget_get_visible (GTK_WIDGET (priv->menu)))
gtk_menu_shell_deactivate (GTK_MENU_SHELL (priv->menu));
if (priv->menu)
{
g_signal_handlers_disconnect_by_func (priv->menu,
menu_deactivate_cb,
button);
gtk_menu_detach (priv->menu);
}
priv->menu = GTK_MENU (menu);
if (priv->menu)
{
gtk_menu_attach_to_widget (priv->menu, GTK_WIDGET (button),
menu_detacher);
gtk_widget_set_sensitive (priv->arrow_button, TRUE);
g_signal_connect (priv->menu, "deactivate",
G_CALLBACK (menu_deactivate_cb), button);
}
else
gtk_widget_set_sensitive (priv->arrow_button, FALSE);
}
g_object_notify (G_OBJECT (button), "menu");
}
/**
* gtk_menu_tool_button_get_menu:
* @button: a #GtkMenuToolButton
*
* Gets the #GtkMenu associated with #GtkMenuToolButton.
*
* Return value: (transfer none): the #GtkMenu associated
* with #GtkMenuToolButton
*
* Since: 2.6
**/
GtkWidget *
gtk_menu_tool_button_get_menu (GtkMenuToolButton *button)
{
g_return_val_if_fail (GTK_IS_MENU_TOOL_BUTTON (button), NULL);
return GTK_WIDGET (button->priv->menu);
}
/**
* gtk_menu_tool_button_set_arrow_tooltip_text:
* @button: a #GtkMenuToolButton
* @text: text to be used as tooltip text for button's arrow button
*
* Sets the tooltip text to be used as tooltip for the arrow button which
* pops up the menu. See gtk_tool_item_set_tooltip_text() for setting a tooltip
* on the whole #GtkMenuToolButton.
*
* Since: 2.12
**/
void
gtk_menu_tool_button_set_arrow_tooltip_text (GtkMenuToolButton *button,
const gchar *text)
{
g_return_if_fail (GTK_IS_MENU_TOOL_BUTTON (button));
gtk_widget_set_tooltip_text (button->priv->arrow_button, text);
}
/**
* gtk_menu_tool_button_set_arrow_tooltip_markup:
* @button: a #GtkMenuToolButton
* @markup: markup text to be used as tooltip text for button's arrow button
*
* Sets the tooltip markup text to be used as tooltip for the arrow button
* which pops up the menu. See gtk_tool_item_set_tooltip_text() for setting a
* tooltip on the whole #GtkMenuToolButton.
*
* Since: 2.12
**/
void
gtk_menu_tool_button_set_arrow_tooltip_markup (GtkMenuToolButton *button,
const gchar *markup)
{
g_return_if_fail (GTK_IS_MENU_TOOL_BUTTON (button));
gtk_widget_set_tooltip_markup (button->priv->arrow_button, markup);
}
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