/* GTK - The GIMP Toolkit
*
* Copyright (C) 2003 Ricardo Fernandez Pascual
* Copyright (C) 2004 Paolo Borelli
* Copyright (C) 2012 Bastien Nocera
*
* 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, see .
*/
/**
* SECTION:gtkmenubutton
* @short_description: A widget that shows a popup when clicked on
* @title: GtkMenuButton
*
* The #GtkMenuButton widget is used to display a popup when clicked on.
* This popup can be provided either as a #GtkPopover or as an abstract
* #GMenuModel.
*
* The #GtkMenuButton widget can show either an icon (set with the
* #GtkMenuButton:icon-name property) or a label (set with the
* #GtkMenuButton:label property). If neither is explicitly set,
* a #GtkImage is automatically created, using an arrow image oriented
* according to #GtkMenuButton:direction or the generic “open-menu-symbolic”
* icon if the direction is not set.
*
* The positioning of the popup is determined by the #GtkMenuButton:direction
* property of the menu button.
*
* For menus, the #GtkWidget:halign and #GtkWidget:valign properties of the
* menu are also taken into account. For example, when the direction is
* %GTK_ARROW_DOWN and the horizontal alignment is %GTK_ALIGN_START, the
* menu will be positioned below the button, with the starting edge
* (depending on the text direction) of the menu aligned with the starting
* edge of the button. If there is not enough space below the button, the
* menu is popped up above the button instead. If the alignment would move
* part of the menu offscreen, it is “pushed in”.
*
* ## Direction = Down
*
* - halign = start
*
* 
*
* - halign = center
*
* 
*
* - halign = end
*
* 
*
* ## Direction = Up
*
* - halign = start
*
* 
*
* - halign = center
*
* 
*
* - halign = end
*
* 
*
* ## Direction = Left
*
* - valign = start
*
* 
*
* - valign = center
*
* 
*
* - valign = end
*
* 
*
* ## Direction = Right
*
* - valign = start
*
* 
*
* - valign = center
*
* 
*
* - valign = end
*
* 
*
* # CSS nodes
*
* |[
* menubutton
* ╰── button.toggle
* ╰──
* ╰── [arrow]
*]|
*
* GtkMenuButton has a single CSS node with name menubutton
* which contains a toggle button node.
*
* Inside the toggle button content, there is an arrow node for
* the indicator, which will carry one of the .none, .up, .down,
* .left or .right style classes to indicate the direction that
* the menu will appear in. The CSS is expected to provide a suitable
* image for each of these cases using the -gtk-icon-source property.
*
* Optionally, the menubutton node can carry the .circular style class
* to request a round appearance.
*
* # Accessibility
*
* GtkMenuButton uses the #GTK_ACCESSIBLE_ROLE_BUTTON role.
*/
#include "config.h"
#include "gtkactionable.h"
#include "gtkbuiltiniconprivate.h"
#include "gtkintl.h"
#include "gtkmain.h"
#include "gtkmenubutton.h"
#include "gtkmenubuttonprivate.h"
#include "gtkpopover.h"
#include "gtkpopovermenu.h"
#include "gtkprivate.h"
#include "gtktypebuiltins.h"
#include "gtklabel.h"
#include "gtkbox.h"
#include "gtkwidgetprivate.h"
#include "gtkbuttonprivate.h"
#include "gtknative.h"
typedef struct _GtkMenuButtonClass GtkMenuButtonClass;
typedef struct _GtkMenuButtonPrivate GtkMenuButtonPrivate;
struct _GtkMenuButton
{
GtkWidget parent_instance;
GtkWidget *button;
GtkWidget *popover; /* Only one at a time can be set */
GMenuModel *model;
GtkMenuButtonCreatePopupFunc create_popup_func;
gpointer create_popup_user_data;
GDestroyNotify create_popup_destroy_notify;
GtkWidget *label_widget;
GtkWidget *arrow_widget;
GtkArrowType arrow_type;
};
struct _GtkMenuButtonClass
{
GtkWidgetClass parent_class;
};
enum
{
PROP_0,
PROP_MENU_MODEL,
PROP_DIRECTION,
PROP_POPOVER,
PROP_ICON_NAME,
PROP_LABEL,
PROP_USE_UNDERLINE,
PROP_HAS_FRAME,
LAST_PROP
};
static GParamSpec *menu_button_props[LAST_PROP];
G_DEFINE_TYPE (GtkMenuButton, gtk_menu_button, GTK_TYPE_WIDGET)
static void gtk_menu_button_dispose (GObject *object);
static void
gtk_menu_button_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkMenuButton *self = GTK_MENU_BUTTON (object);
switch (property_id)
{
case PROP_MENU_MODEL:
gtk_menu_button_set_menu_model (self, g_value_get_object (value));
break;
case PROP_DIRECTION:
gtk_menu_button_set_direction (self, g_value_get_enum (value));
break;
case PROP_POPOVER:
gtk_menu_button_set_popover (self, g_value_get_object (value));
break;
case PROP_ICON_NAME:
gtk_menu_button_set_icon_name (self, g_value_get_string (value));
break;
case PROP_LABEL:
gtk_menu_button_set_label (self, g_value_get_string (value));
break;
case PROP_USE_UNDERLINE:
gtk_menu_button_set_use_underline (self, g_value_get_boolean (value));
break;
case PROP_HAS_FRAME:
gtk_menu_button_set_has_frame (self, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
gtk_menu_button_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkMenuButton *self = GTK_MENU_BUTTON (object);
switch (property_id)
{
case PROP_MENU_MODEL:
g_value_set_object (value, self->model);
break;
case PROP_DIRECTION:
g_value_set_enum (value, self->arrow_type);
break;
case PROP_POPOVER:
g_value_set_object (value, self->popover);
break;
case PROP_ICON_NAME:
g_value_set_string (value, gtk_menu_button_get_icon_name (GTK_MENU_BUTTON (object)));
break;
case PROP_LABEL:
g_value_set_string (value, gtk_menu_button_get_label (GTK_MENU_BUTTON (object)));
break;
case PROP_USE_UNDERLINE:
g_value_set_boolean (value, gtk_menu_button_get_use_underline (GTK_MENU_BUTTON (object)));
break;
case PROP_HAS_FRAME:
g_value_set_boolean (value, gtk_menu_button_get_has_frame (GTK_MENU_BUTTON (object)));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
gtk_menu_button_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state_flags)
{
GtkMenuButton *self = GTK_MENU_BUTTON (widget);
if (!gtk_widget_is_sensitive (widget))
{
if (self->popover)
gtk_widget_hide (self->popover);
}
}
static void
gtk_menu_button_toggled (GtkMenuButton *self)
{
const gboolean active = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (self->button));
/* Might set a new menu/popover */
if (active && self->create_popup_func)
{
self->create_popup_func (self, self->create_popup_user_data);
}
if (self->popover)
{
if (active)
{
gtk_popover_popup (GTK_POPOVER (self->popover));
gtk_accessible_update_state (GTK_ACCESSIBLE (self),
GTK_ACCESSIBLE_STATE_EXPANDED, TRUE,
-1);
}
else
{
gtk_popover_popdown (GTK_POPOVER (self->popover));
gtk_accessible_reset_state (GTK_ACCESSIBLE (self),
GTK_ACCESSIBLE_STATE_EXPANDED);
}
}
}
static void
gtk_menu_button_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkMenuButton *self = GTK_MENU_BUTTON (widget);
gtk_widget_measure (self->button,
orientation,
for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
static void
gtk_menu_button_size_allocate (GtkWidget *widget,
int width,
int height,
int baseline)
{
GtkMenuButton *self= GTK_MENU_BUTTON (widget);
gtk_widget_size_allocate (self->button,
&(GtkAllocation) { 0, 0, width, height },
baseline);
if (self->popover)
gtk_popover_present (GTK_POPOVER (self->popover));
}
static gboolean
gtk_menu_button_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkMenuButton *self = GTK_MENU_BUTTON (widget);
if (self->popover && gtk_widget_get_visible (self->popover))
return gtk_widget_child_focus (self->popover, direction);
else
return gtk_widget_child_focus (self->button, direction);
}
static gboolean
gtk_menu_button_grab_focus (GtkWidget *widget)
{
GtkMenuButton *self = GTK_MENU_BUTTON (widget);
return gtk_widget_grab_focus (self->button);
}
static void
gtk_menu_button_class_init (GtkMenuButtonClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
gobject_class->set_property = gtk_menu_button_set_property;
gobject_class->get_property = gtk_menu_button_get_property;
gobject_class->dispose = gtk_menu_button_dispose;
widget_class->measure = gtk_menu_button_measure;
widget_class->size_allocate = gtk_menu_button_size_allocate;
widget_class->state_flags_changed = gtk_menu_button_state_flags_changed;
widget_class->focus = gtk_menu_button_focus;
widget_class->grab_focus = gtk_menu_button_grab_focus;
/**
* GtkMenuButton:menu-model:
*
* The #GMenuModel from which the popup will be created.
*
* See gtk_menu_button_set_menu_model() for the interaction with the
* #GtkMenuButton:popup property.
*/
menu_button_props[PROP_MENU_MODEL] =
g_param_spec_object ("menu-model",
P_("Menu model"),
P_("The model from which the popup is made."),
G_TYPE_MENU_MODEL,
GTK_PARAM_READWRITE);
/**
* GtkMenuButton:direction:
*
* The #GtkArrowType representing the direction in which the
* menu or popover will be popped out.
*/
menu_button_props[PROP_DIRECTION] =
g_param_spec_enum ("direction",
P_("Direction"),
P_("The direction the arrow should point."),
GTK_TYPE_ARROW_TYPE,
GTK_ARROW_DOWN,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkMenuButton:popover:
*
* The #GtkPopover that will be popped up when the button is clicked.
*/
menu_button_props[PROP_POPOVER] =
g_param_spec_object ("popover",
P_("Popover"),
P_("The popover"),
GTK_TYPE_POPOVER,
G_PARAM_READWRITE);
menu_button_props[PROP_ICON_NAME] =
g_param_spec_string ("icon-name",
P_("Icon Name"),
P_("The name of the icon used to automatically populate the button"),
NULL,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
menu_button_props[PROP_LABEL] =
g_param_spec_string ("label",
P_("Label"),
P_("The label for the button"),
NULL,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
menu_button_props[PROP_USE_UNDERLINE] =
g_param_spec_boolean ("use-underline",
P_("Use underline"),
P_("If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
menu_button_props[PROP_HAS_FRAME] =
g_param_spec_boolean ("has-frame",
P_("Has frame"),
P_("Whether the button has a frame"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (gobject_class, LAST_PROP, menu_button_props);
gtk_widget_class_set_css_name (widget_class, I_("menubutton"));
gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_BUTTON);
}
static void
set_arrow_type (GtkWidget *arrow,
GtkArrowType arrow_type,
gboolean visible)
{
gtk_widget_remove_css_class (arrow, "none");
gtk_widget_remove_css_class (arrow, "down");
gtk_widget_remove_css_class (arrow, "up");
gtk_widget_remove_css_class (arrow, "left");
gtk_widget_remove_css_class (arrow, "right");
switch (arrow_type)
{
case GTK_ARROW_NONE:
gtk_widget_add_css_class (arrow, "none");
break;
case GTK_ARROW_DOWN:
gtk_widget_add_css_class (arrow, "down");
break;
case GTK_ARROW_UP:
gtk_widget_add_css_class (arrow, "up");
break;
case GTK_ARROW_LEFT:
gtk_widget_add_css_class (arrow, "left");
break;
case GTK_ARROW_RIGHT:
gtk_widget_add_css_class (arrow, "right");
break;
default:
break;
}
if (visible)
gtk_widget_show (arrow);
else
gtk_widget_hide (arrow);
}
static void
add_arrow (GtkMenuButton *self)
{
GtkWidget *arrow;
arrow = gtk_builtin_icon_new ("arrow");
set_arrow_type (arrow, self->arrow_type, TRUE);
gtk_button_set_child (GTK_BUTTON (self->button), arrow);
self->arrow_widget = arrow;
}
static void
gtk_menu_button_init (GtkMenuButton *self)
{
self->arrow_type = GTK_ARROW_DOWN;
self->button = gtk_toggle_button_new ();
gtk_widget_set_parent (self->button, GTK_WIDGET (self));
g_signal_connect_swapped (self->button, "toggled", G_CALLBACK (gtk_menu_button_toggled), self);
add_arrow (self);
gtk_widget_set_sensitive (self->button, FALSE);
gtk_widget_add_css_class (GTK_WIDGET (self), "popup");
}
/**
* gtk_menu_button_new:
*
* Creates a new #GtkMenuButton widget with downwards-pointing
* arrow as the only child. You can replace the child widget
* with another #GtkWidget should you wish to.
*
* Returns: The newly created #GtkMenuButton widget
*/
GtkWidget *
gtk_menu_button_new (void)
{
return g_object_new (GTK_TYPE_MENU_BUTTON, NULL);
}
static void
update_sensitivity (GtkMenuButton *self)
{
gboolean has_popup;
has_popup = self->popover != NULL || self->create_popup_func != NULL;
gtk_widget_set_sensitive (self->button, has_popup);
gtk_accessible_update_property (GTK_ACCESSIBLE (self),
GTK_ACCESSIBLE_PROPERTY_HAS_POPUP, has_popup,
-1);
if (self->popover != NULL)
gtk_accessible_update_relation (GTK_ACCESSIBLE (self),
GTK_ACCESSIBLE_RELATION_CONTROLS, self->popover, NULL,
-1);
else
gtk_accessible_reset_relation (GTK_ACCESSIBLE (self),
GTK_ACCESSIBLE_RELATION_CONTROLS);
}
static gboolean
menu_deactivate_cb (GtkMenuButton *self)
{
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (self->button), FALSE);
return TRUE;
}
/**
* gtk_menu_button_set_menu_model:
* @menu_button: a #GtkMenuButton
* @menu_model: (nullable): a #GMenuModel, or %NULL to unset and disable the
* button
*
* Sets the #GMenuModel from which the popup will be constructed,
* or %NULL to dissociate any existing menu model and disable the button.
*
* A #GtkPopover will be created from the menu model with gtk_popover_menu_new_from_model().
* Actions will be connected as documented for this function.
*
* If #GtkMenuButton:popover is already set, it will be dissociated from the @menu_button,
* and the property is set to %NULL.
*/
void
gtk_menu_button_set_menu_model (GtkMenuButton *menu_button,
GMenuModel *menu_model)
{
g_return_if_fail (GTK_IS_MENU_BUTTON (menu_button));
g_return_if_fail (G_IS_MENU_MODEL (menu_model) || menu_model == NULL);
g_object_freeze_notify (G_OBJECT (menu_button));
if (menu_model)
g_object_ref (menu_model);
if (menu_model)
{
GtkWidget *popover;
popover = gtk_popover_menu_new_from_model (menu_model);
gtk_menu_button_set_popover (menu_button, popover);
}
else
{
gtk_menu_button_set_popover (menu_button, NULL);
}
menu_button->model = menu_model;
g_object_notify_by_pspec (G_OBJECT (menu_button), menu_button_props[PROP_MENU_MODEL]);
g_object_thaw_notify (G_OBJECT (menu_button));
}
/**
* gtk_menu_button_get_menu_model:
* @menu_button: a #GtkMenuButton
*
* Returns the #GMenuModel used to generate the popup.
*
* Returns: (nullable) (transfer none): a #GMenuModel or %NULL
*/
GMenuModel *
gtk_menu_button_get_menu_model (GtkMenuButton *menu_button)
{
g_return_val_if_fail (GTK_IS_MENU_BUTTON (menu_button), NULL);
return menu_button->model;
}
static void
update_popover_direction (GtkMenuButton *self)
{
if (!self->popover)
return;
switch (self->arrow_type)
{
case GTK_ARROW_UP:
gtk_popover_set_position (GTK_POPOVER (self->popover), GTK_POS_TOP);
break;
case GTK_ARROW_DOWN:
case GTK_ARROW_NONE:
gtk_popover_set_position (GTK_POPOVER (self->popover), GTK_POS_BOTTOM);
break;
case GTK_ARROW_LEFT:
gtk_popover_set_position (GTK_POPOVER (self->popover), GTK_POS_LEFT);
break;
case GTK_ARROW_RIGHT:
gtk_popover_set_position (GTK_POPOVER (self->popover), GTK_POS_RIGHT);
break;
default:
break;
}
}
static void
popover_destroy_cb (GtkMenuButton *menu_button)
{
gtk_menu_button_set_popover (menu_button, NULL);
}
/**
* gtk_menu_button_set_direction:
* @menu_button: a #GtkMenuButton
* @direction: a #GtkArrowType
*
* Sets the direction in which the popup will be popped up, as
* well as changing the arrow’s direction. The child will not
* be changed to an arrow if it was customized.
*
* If the does not fit in the available space in the given direction,
* GTK will its best to keep it inside the screen and fully visible.
*
* If you pass %GTK_ARROW_NONE for a @direction, the popup will behave
* as if you passed %GTK_ARROW_DOWN (although you won’t see any arrows).
*/
void
gtk_menu_button_set_direction (GtkMenuButton *menu_button,
GtkArrowType direction)
{
gboolean is_image_button;
g_return_if_fail (GTK_IS_MENU_BUTTON (menu_button));
if (menu_button->arrow_type == direction)
return;
menu_button->arrow_type = direction;
g_object_notify_by_pspec (G_OBJECT (menu_button), menu_button_props[PROP_DIRECTION]);
/* Is it custom content? We don't change that */
is_image_button = menu_button->label_widget == NULL;
if (is_image_button && (menu_button->arrow_widget != gtk_button_get_child (GTK_BUTTON (menu_button->button))))
return;
set_arrow_type (menu_button->arrow_widget,
menu_button->arrow_type,
is_image_button || (menu_button->arrow_type != GTK_ARROW_NONE));
update_popover_direction (menu_button);
}
/**
* gtk_menu_button_get_direction:
* @menu_button: a #GtkMenuButton
*
* Returns the direction the popup will be pointing at when popped up.
*
* Returns: a #GtkArrowType value
*/
GtkArrowType
gtk_menu_button_get_direction (GtkMenuButton *menu_button)
{
g_return_val_if_fail (GTK_IS_MENU_BUTTON (menu_button), GTK_ARROW_DOWN);
return menu_button->arrow_type;
}
static void
gtk_menu_button_dispose (GObject *object)
{
GtkMenuButton *self = GTK_MENU_BUTTON (object);
if (self->popover)
{
g_signal_handlers_disconnect_by_func (self->popover,
menu_deactivate_cb,
object);
g_signal_handlers_disconnect_by_func (self->popover,
popover_destroy_cb,
object);
gtk_widget_unparent (self->popover);
self->popover = NULL;
}
g_clear_object (&self->model);
g_clear_pointer (&self->button, gtk_widget_unparent);
if (self->create_popup_destroy_notify)
self->create_popup_destroy_notify (self->create_popup_user_data);
G_OBJECT_CLASS (gtk_menu_button_parent_class)->dispose (object);
}
/**
* gtk_menu_button_set_popover:
* @menu_button: a #GtkMenuButton
* @popover: (nullable): a #GtkPopover, or %NULL to unset and disable the button
*
* Sets the #GtkPopover that will be popped up when the @menu_button is clicked,
* or %NULL to dissociate any existing popover and disable the button.
*
* If #GtkMenuButton:menu-model is set, the menu model is dissociated from the
* @menu_button, and the property is set to %NULL.
*/
void
gtk_menu_button_set_popover (GtkMenuButton *menu_button,
GtkWidget *popover)
{
g_return_if_fail (GTK_IS_MENU_BUTTON (menu_button));
g_return_if_fail (GTK_IS_POPOVER (popover) || popover == NULL);
g_object_freeze_notify (G_OBJECT (menu_button));
g_clear_object (&menu_button->model);
if (menu_button->popover)
{
if (gtk_widget_get_visible (menu_button->popover))
gtk_widget_hide (menu_button->popover);
g_signal_handlers_disconnect_by_func (menu_button->popover,
menu_deactivate_cb,
menu_button);
g_signal_handlers_disconnect_by_func (menu_button->popover,
popover_destroy_cb,
menu_button);
gtk_widget_unparent (menu_button->popover);
}
menu_button->popover = popover;
if (popover)
{
gtk_widget_set_parent (menu_button->popover, GTK_WIDGET (menu_button));
g_signal_connect_swapped (menu_button->popover, "closed",
G_CALLBACK (menu_deactivate_cb), menu_button);
g_signal_connect_swapped (menu_button->popover, "destroy",
G_CALLBACK (popover_destroy_cb), menu_button);
update_popover_direction (menu_button);
}
update_sensitivity (menu_button);
g_object_notify_by_pspec (G_OBJECT (menu_button), menu_button_props[PROP_POPOVER]);
g_object_notify_by_pspec (G_OBJECT (menu_button), menu_button_props[PROP_MENU_MODEL]);
g_object_thaw_notify (G_OBJECT (menu_button));
}
/**
* gtk_menu_button_get_popover:
* @menu_button: a #GtkMenuButton
*
* Returns the #GtkPopover that pops out of the button.
* If the button is not using a #GtkPopover, this function
* returns %NULL.
*
* Returns: (nullable) (transfer none): a #GtkPopover or %NULL
*/
GtkPopover *
gtk_menu_button_get_popover (GtkMenuButton *menu_button)
{
g_return_val_if_fail (GTK_IS_MENU_BUTTON (menu_button), NULL);
return GTK_POPOVER (menu_button->popover);
}
/**
* gtk_menu_button_set_icon_name:
* @menu_button: a #GtkMenuButton
* @icon_name: the icon name
*
* Sets the name of an icon to show inside the menu button.
*/
void
gtk_menu_button_set_icon_name (GtkMenuButton *menu_button,
const char *icon_name)
{
g_return_if_fail (GTK_IS_MENU_BUTTON (menu_button));
gtk_button_set_icon_name (GTK_BUTTON (menu_button->button), icon_name);
g_object_notify_by_pspec (G_OBJECT (menu_button), menu_button_props[PROP_ICON_NAME]);
}
/**
* gtk_menu_button_get_icon_name:
* @menu_button: a #GtkMenuButton
*
* Gets the name of the icon shown in the button.
*
* Returns: the name of the icon shown in the button
*/
const char *
gtk_menu_button_get_icon_name (GtkMenuButton *menu_button)
{
g_return_val_if_fail (GTK_IS_MENU_BUTTON (menu_button), NULL);
return gtk_button_get_icon_name (GTK_BUTTON (menu_button->button));
}
/**
* gtk_menu_button_set_label:
* @menu_button: a #GtkMenuButton
* @label: the label
*
* Sets the label to show inside the menu button.
*/
void
gtk_menu_button_set_label (GtkMenuButton *menu_button,
const char *label)
{
GtkWidget *box;
GtkWidget *label_widget;
GtkWidget *arrow;
g_return_if_fail (GTK_IS_MENU_BUTTON (menu_button));
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
label_widget = gtk_label_new (label);
g_return_if_fail (GTK_IS_MENU_BUTTON (menu_button));
gtk_label_set_xalign (GTK_LABEL (label_widget), 0);
gtk_label_set_use_underline (GTK_LABEL (label_widget),
gtk_button_get_use_underline (GTK_BUTTON (menu_button->button)));
gtk_widget_set_hexpand (label_widget, TRUE);
gtk_widget_set_halign (label_widget, GTK_ALIGN_CENTER);
arrow = gtk_builtin_icon_new ("arrow");
menu_button->arrow_widget = arrow;
set_arrow_type (arrow, menu_button->arrow_type, menu_button->arrow_type != GTK_ARROW_NONE);
gtk_box_append (GTK_BOX (box), label_widget);
gtk_box_append (GTK_BOX (box), arrow);
gtk_button_set_child (GTK_BUTTON (menu_button->button), box);
menu_button->label_widget = label_widget;
g_object_notify_by_pspec (G_OBJECT (menu_button), menu_button_props[PROP_LABEL]);
}
/**
* gtk_menu_button_get_label:
* @menu_button: a #GtkMenuButton
*
* Gets the label shown in the button
*
* Returns: the label shown in the button
*/
const char *
gtk_menu_button_get_label (GtkMenuButton *menu_button)
{
GtkWidget *child;
g_return_val_if_fail (GTK_IS_MENU_BUTTON (menu_button), NULL);
child = gtk_button_get_child (GTK_BUTTON (menu_button->button));
if (GTK_IS_BOX (child))
{
child = gtk_widget_get_first_child (child);
return gtk_label_get_label (GTK_LABEL (child));
}
return NULL;
}
/**
* gtk_menu_button_set_has_frame:
* @menu_button: a #GtkMenuButton
* @has_frame: whether the button should have a visible frame
*
* Sets the style of the button.
*/
void
gtk_menu_button_set_has_frame (GtkMenuButton *menu_button,
gboolean has_frame)
{
g_return_if_fail (GTK_IS_MENU_BUTTON (menu_button));
if (gtk_button_get_has_frame (GTK_BUTTON (menu_button->button)) == has_frame)
return;
gtk_button_set_has_frame (GTK_BUTTON (menu_button->button), has_frame);
g_object_notify_by_pspec (G_OBJECT (menu_button), menu_button_props[PROP_HAS_FRAME]);
}
/**
* gtk_menu_button_get_has_frame:
* @menu_button: a #GtkMenuButton
*
* Returns whether the button has a frame.
*
* Returns: %TRUE if the button has a frame
*/
gboolean
gtk_menu_button_get_has_frame (GtkMenuButton *menu_button)
{
g_return_val_if_fail (GTK_IS_MENU_BUTTON (menu_button), TRUE);
return gtk_button_get_has_frame (GTK_BUTTON (menu_button->button));
}
/**
* gtk_menu_button_popup:
* @menu_button: a #GtkMenuButton
*
* Pop up the menu.
*/
void
gtk_menu_button_popup (GtkMenuButton *menu_button)
{
g_return_if_fail (GTK_IS_MENU_BUTTON (menu_button));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (menu_button->button), TRUE);
}
/**
* gtk_menu_button_popdown:
* @menu_button: a #GtkMenuButton
*
* Dismiss the menu.
*/
void
gtk_menu_button_popdown (GtkMenuButton *menu_button)
{
g_return_if_fail (GTK_IS_MENU_BUTTON (menu_button));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (menu_button->button), FALSE);
}
/**
* gtk_menu_button_set_create_popup_func:
* @menu_button: a #GtkMenuButton
* @func: (nullable): function to call when a popuop is about to
* be shown, but none has been provided via other means, or %NULL
* to reset to default behavior.
* @user_data: (closure): user data to pass to @func.
* @destroy_notify: (nullable): destroy notify for @user_data
*
* Sets @func to be called when a popup is about to be shown.
* @func should use one of
*
* - gtk_menu_button_set_popover()
* - gtk_menu_button_set_menu_model()
*
* to set a popup for @menu_button.
* If @func is non-%NULL, @menu_button will always be sensitive.
*
* Using this function will not reset the menu widget attached to @menu_button.
* Instead, this can be done manually in @func.
*/
void
gtk_menu_button_set_create_popup_func (GtkMenuButton *menu_button,
GtkMenuButtonCreatePopupFunc func,
gpointer user_data,
GDestroyNotify destroy_notify)
{
g_return_if_fail (GTK_IS_MENU_BUTTON (menu_button));
if (menu_button->create_popup_destroy_notify)
menu_button->create_popup_destroy_notify (menu_button->create_popup_user_data);
menu_button->create_popup_func = func;
menu_button->create_popup_user_data = user_data;
menu_button->create_popup_destroy_notify = destroy_notify;
update_sensitivity (menu_button);
}
/**
* gtk_menu_button_set_use_underline:
* @menu_button: a #GtkMenuButton
* @use_underline: %TRUE if underlines in the text indicate mnemonics
*
* If true, an underline in the text indicates the next character should be
* used for the mnemonic accelerator key.
*/
void
gtk_menu_button_set_use_underline (GtkMenuButton *menu_button,
gboolean use_underline)
{
g_return_if_fail (GTK_IS_MENU_BUTTON (menu_button));
if (gtk_button_get_use_underline (GTK_BUTTON (menu_button->button)) == use_underline)
return;
gtk_button_set_use_underline (GTK_BUTTON (menu_button->button), use_underline);
if (menu_button->label_widget)
gtk_label_set_use_underline (GTK_LABEL (menu_button->label_widget), use_underline);
g_object_notify_by_pspec (G_OBJECT (menu_button), menu_button_props[PROP_USE_UNDERLINE]);
}
/**
* gtk_menu_button_get_use_underline:
* @menu_button: a #GtkMenuButton
*
* Returns whether an embedded underline in the text indicates a
* mnemonic. See gtk_menu_button_set_use_underline().
*
* Returns: %TRUE whether an embedded underline in the text indicates
* the mnemonic accelerator keys.
*/
gboolean
gtk_menu_button_get_use_underline (GtkMenuButton *menu_button)
{
g_return_val_if_fail (GTK_IS_MENU_BUTTON (menu_button), FALSE);
return gtk_button_get_use_underline (GTK_BUTTON (menu_button->button));
}