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gtk2/gtk/gtktoolbar.c

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
* GtkToolbar copyright (C) Federico Mena
*
* Copyright (C) 2002 Anders Carlsson <andersca@gnome.org>
* Copyright (C) 2002 James Henstridge <james@daa.com.au>
* Copyright (C) 2003, 2004 Soeren Sandmann <sandmann@daimi.au.dk>
*
* 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 <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include <math.h>
#include <string.h>
#include "gtktoolbar.h"
#include "gtktoolbarprivate.h"
#include "gtkbindings.h"
#include "gtkbox.h"
#include "gtkcontainerprivate.h"
#include "gtkcsscustomgadgetprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtkimage.h"
#include "gtkintl.h"
#include "gtklabel.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkmenu.h"
#include "gtkorientable.h"
#include "gtkorientableprivate.h"
#include "gtkprivate.h"
#include "gtkradiobutton.h"
#include "gtkradiotoolbutton.h"
#include "gtkrender.h"
#include "gtkseparatormenuitem.h"
#include "gtkseparatortoolitem.h"
#include "gtktoolshell.h"
#include "gtktypebuiltins.h"
#include "gtkwidgetpath.h"
#include "gtkwidgetprivate.h"
#include "gtkwindowprivate.h"
#include "gtkgesturemultipress.h"
/**
* SECTION:gtktoolbar
* @Short_description: Create bars of buttons and other widgets
* @Title: GtkToolbar
* @See_also: #GtkToolItem
*
* A toolbar is created with a call to gtk_toolbar_new().
*
* A toolbar can contain instances of a subclass of #GtkToolItem. To add
* a #GtkToolItem to the a toolbar, use gtk_toolbar_insert(). To remove
* an item from the toolbar use gtk_container_remove(). To add a button
* to the toolbar, add an instance of #GtkToolButton.
*
* Toolbar items can be visually grouped by adding instances of
* #GtkSeparatorToolItem to the toolbar. If the GtkToolbar child property
* “expand” is #TRUE and the property #GtkSeparatorToolItem:draw is set to
* #FALSE, the effect is to force all following items to the end of the toolbar.
*
* Creating a context menu for the toolbar can be done by connecting to
* the #GtkToolbar::popup-context-menu signal.
*
* # CSS nodes
*
* GtkToolbar has a single CSS node with name toolbar.
*/
typedef struct _ToolbarContent ToolbarContent;
#define DEFAULT_SPACE_SIZE 12
#define DEFAULT_SPACE_STYLE GTK_TOOLBAR_SPACE_LINE
#define SPACE_LINE_DIVISION 10.0
#define SPACE_LINE_START 2.0
#define SPACE_LINE_END 8.0
#define DEFAULT_ICON_SIZE GTK_ICON_SIZE_LARGE_TOOLBAR
#define DEFAULT_TOOLBAR_STYLE GTK_TOOLBAR_BOTH_HORIZ
#define DEFAULT_ANIMATION_STATE TRUE
#define MAX_HOMOGENEOUS_N_CHARS 13 /* Items that are wider than this do not participate
* in the homogeneous game. In units of
* pango_font_get_estimated_char_width().
*/
#define SLIDE_SPEED 600.0 /* How fast the items slide, in pixels per second */
#define ACCEL_THRESHOLD 0.18 /* After how much time in seconds will items start speeding up */
struct _GtkToolbarPrivate
{
GtkMenu *menu;
GtkSettings *settings;
GtkIconSize icon_size;
GtkToolbarStyle style;
GtkToolItem *highlight_tool_item;
GtkWidget *arrow;
GtkWidget *arrow_button;
GdkWindow *event_window;
GtkCssGadget *gadget;
GtkAllocation prev_allocation;
GList *content;
GTimer *timer;
GtkGesture *click_gesture;
gulong settings_connection;
gint idle_id;
gint button_maxw; /* maximum width of homogeneous children */
gint button_maxh; /* maximum height of homogeneous children */
gint max_homogeneous_pixels;
gint num_children;
GtkOrientation orientation;
guint animation : 1;
guint icon_size_set : 1;
guint is_sliding : 1;
guint need_rebuild : 1; /* whether the overflow menu should be regenerated */
guint need_sync : 1;
guint show_arrow : 1;
guint style_set : 1;
};
/* Properties */
enum {
PROP_0,
PROP_ORIENTATION,
PROP_TOOLBAR_STYLE,
PROP_SHOW_ARROW,
PROP_TOOLTIPS,
PROP_ICON_SIZE,
PROP_ICON_SIZE_SET
};
/* Child properties */
enum {
CHILD_PROP_0,
CHILD_PROP_EXPAND,
CHILD_PROP_HOMOGENEOUS
};
/* Signals */
enum {
ORIENTATION_CHANGED,
STYLE_CHANGED,
POPUP_CONTEXT_MENU,
FOCUS_HOME_OR_END,
LAST_SIGNAL
};
typedef enum {
NOT_ALLOCATED,
NORMAL,
HIDDEN,
OVERFLOWN
} ItemState;
static void gtk_toolbar_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_toolbar_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static gint gtk_toolbar_draw (GtkWidget *widget,
cairo_t *cr);
static void gtk_toolbar_realize (GtkWidget *widget);
static void gtk_toolbar_unrealize (GtkWidget *widget);
static void gtk_toolbar_measure_ (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline);
static void gtk_toolbar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_toolbar_style_updated (GtkWidget *widget);
static gboolean gtk_toolbar_focus (GtkWidget *widget,
GtkDirectionType dir);
static void gtk_toolbar_move_focus (GtkWidget *widget,
GtkDirectionType dir);
static void gtk_toolbar_screen_changed (GtkWidget *widget,
GdkScreen *previous_screen);
static void gtk_toolbar_map (GtkWidget *widget);
static void gtk_toolbar_unmap (GtkWidget *widget);
static void gtk_toolbar_set_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_toolbar_get_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gtk_toolbar_finalize (GObject *object);
static void gtk_toolbar_dispose (GObject *object);
static void gtk_toolbar_show_all (GtkWidget *widget);
static void gtk_toolbar_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_toolbar_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_toolbar_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static GType gtk_toolbar_child_type (GtkContainer *container);
static void gtk_toolbar_direction_changed (GtkWidget *widget,
GtkTextDirection previous_direction);
static void gtk_toolbar_orientation_changed (GtkToolbar *toolbar,
GtkOrientation orientation);
static void gtk_toolbar_real_style_changed (GtkToolbar *toolbar,
GtkToolbarStyle style);
static gboolean gtk_toolbar_focus_home_or_end (GtkToolbar *toolbar,
gboolean focus_home);
static gboolean gtk_toolbar_arrow_button_press (GtkWidget *button,
GdkEventButton *event,
GtkToolbar *toolbar);
static void gtk_toolbar_arrow_button_clicked (GtkWidget *button,
GtkToolbar *toolbar);
static gboolean gtk_toolbar_popup_menu (GtkWidget *toolbar);
static void gtk_toolbar_reconfigured (GtkToolbar *toolbar);
static void gtk_toolbar_allocate (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer data);
static void gtk_toolbar_measure (GtkCssGadget *gadget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer data);
static gboolean gtk_toolbar_render (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height,
gpointer data);
static void gtk_toolbar_pressed_cb (GtkGestureMultiPress *gesture,
int n_press,
double x,
double y,
gpointer user_data);
/* methods on ToolbarContent 'class' */
static ToolbarContent *toolbar_content_new_tool_item (GtkToolbar *toolbar,
GtkToolItem *item,
gboolean is_placeholder,
gint pos);
static void toolbar_content_remove (ToolbarContent *content,
GtkToolbar *toolbar);
static void toolbar_content_free (ToolbarContent *content);
static void toolbar_content_draw (ToolbarContent *content,
GtkContainer *container,
cairo_t *cr);
static gboolean toolbar_content_visible (ToolbarContent *content,
GtkToolbar *toolbar);
static void toolbar_content_size_request (ToolbarContent *content,
GtkToolbar *toolbar,
GtkRequisition *requisition);
static gboolean toolbar_content_is_homogeneous (ToolbarContent *content,
GtkToolbar *toolbar);
static gboolean toolbar_content_is_placeholder (ToolbarContent *content);
static gboolean toolbar_content_disappearing (ToolbarContent *content);
static ItemState toolbar_content_get_state (ToolbarContent *content);
static gboolean toolbar_content_child_visible (ToolbarContent *content);
static void toolbar_content_get_goal_allocation (ToolbarContent *content,
GtkAllocation *allocation);
static void toolbar_content_get_allocation (ToolbarContent *content,
GtkAllocation *allocation);
static void toolbar_content_set_start_allocation (ToolbarContent *content,
GtkAllocation *new_start_allocation);
static void toolbar_content_get_start_allocation (ToolbarContent *content,
GtkAllocation *start_allocation);
static gboolean toolbar_content_get_expand (ToolbarContent *content);
static void toolbar_content_set_goal_allocation (ToolbarContent *content,
GtkAllocation *allocation);
static void toolbar_content_set_child_visible (ToolbarContent *content,
GtkToolbar *toolbar,
gboolean visible);
static void toolbar_content_size_allocate (ToolbarContent *content,
GtkAllocation *allocation);
static void toolbar_content_set_state (ToolbarContent *content,
ItemState new_state);
static GtkWidget * toolbar_content_get_widget (ToolbarContent *content);
static void toolbar_content_set_disappearing (ToolbarContent *content,
gboolean disappearing);
static void toolbar_content_set_size_request (ToolbarContent *content,
gint width,
gint height);
static void toolbar_content_toolbar_reconfigured (ToolbarContent *content,
GtkToolbar *toolbar);
static GtkWidget * toolbar_content_retrieve_menu_item (ToolbarContent *content);
static gboolean toolbar_content_has_proxy_menu_item (ToolbarContent *content);
static gboolean toolbar_content_is_separator (ToolbarContent *content);
static void toolbar_content_show_all (ToolbarContent *content);
static void toolbar_content_set_expand (ToolbarContent *content,
gboolean expand);
static void toolbar_tool_shell_iface_init (GtkToolShellIface *iface);
static GtkIconSize toolbar_get_icon_size (GtkToolShell *shell);
static GtkOrientation toolbar_get_orientation (GtkToolShell *shell);
static GtkToolbarStyle toolbar_get_style (GtkToolShell *shell);
static void toolbar_rebuild_menu (GtkToolShell *shell);
G_DEFINE_TYPE_WITH_CODE (GtkToolbar, gtk_toolbar, GTK_TYPE_CONTAINER,
G_ADD_PRIVATE (GtkToolbar)
G_IMPLEMENT_INTERFACE (GTK_TYPE_TOOL_SHELL,
toolbar_tool_shell_iface_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE,
NULL))
static guint toolbar_signals[LAST_SIGNAL] = { 0 };
static void
add_arrow_bindings (GtkBindingSet *binding_set,
guint keysym,
GtkDirectionType dir)
{
guint keypad_keysym = keysym - GDK_KEY_Left + GDK_KEY_KP_Left;
gtk_binding_entry_add_signal (binding_set, keysym, 0,
"move-focus", 1,
GTK_TYPE_DIRECTION_TYPE, dir);
gtk_binding_entry_add_signal (binding_set, keypad_keysym, 0,
"move-focus", 1,
GTK_TYPE_DIRECTION_TYPE, dir);
}
static void
add_ctrl_tab_bindings (GtkBindingSet *binding_set,
GdkModifierType modifiers,
GtkDirectionType direction)
{
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Tab, GDK_CONTROL_MASK | modifiers,
"move-focus", 1,
GTK_TYPE_DIRECTION_TYPE, direction);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Tab, GDK_CONTROL_MASK | modifiers,
"move-focus", 1,
GTK_TYPE_DIRECTION_TYPE, direction);
}
static void
gtk_toolbar_class_init (GtkToolbarClass *klass)
{
GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
GtkBindingSet *binding_set;
gobject_class = (GObjectClass *)klass;
widget_class = (GtkWidgetClass *)klass;
container_class = (GtkContainerClass *)klass;
gobject_class->set_property = gtk_toolbar_set_property;
gobject_class->get_property = gtk_toolbar_get_property;
gobject_class->finalize = gtk_toolbar_finalize;
gobject_class->dispose = gtk_toolbar_dispose;
widget_class->draw = gtk_toolbar_draw;
widget_class->measure = gtk_toolbar_measure_;
widget_class->size_allocate = gtk_toolbar_size_allocate;
widget_class->style_updated = gtk_toolbar_style_updated;
widget_class->focus = gtk_toolbar_focus;
gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_TOOL_BAR);
/* need to override the base class function via override_class_handler,
* because the signal slot is not available in GtkWidgetClass
*/
g_signal_override_class_handler ("move-focus",
GTK_TYPE_TOOLBAR,
G_CALLBACK (gtk_toolbar_move_focus));
widget_class->screen_changed = gtk_toolbar_screen_changed;
widget_class->realize = gtk_toolbar_realize;
widget_class->unrealize = gtk_toolbar_unrealize;
widget_class->map = gtk_toolbar_map;
widget_class->unmap = gtk_toolbar_unmap;
widget_class->popup_menu = gtk_toolbar_popup_menu;
widget_class->show_all = gtk_toolbar_show_all;
widget_class->direction_changed = gtk_toolbar_direction_changed;
container_class->add = gtk_toolbar_add;
container_class->remove = gtk_toolbar_remove;
container_class->forall = gtk_toolbar_forall;
container_class->child_type = gtk_toolbar_child_type;
container_class->get_child_property = gtk_toolbar_get_child_property;
container_class->set_child_property = gtk_toolbar_set_child_property;
klass->orientation_changed = gtk_toolbar_orientation_changed;
klass->style_changed = gtk_toolbar_real_style_changed;
/**
* GtkToolbar::orientation-changed:
* @toolbar: the object which emitted the signal
* @orientation: the new #GtkOrientation of the toolbar
*
* Emitted when the orientation of the toolbar changes.
*/
toolbar_signals[ORIENTATION_CHANGED] =
g_signal_new (I_("orientation-changed"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkToolbarClass, orientation_changed),
NULL, NULL,
g_cclosure_marshal_VOID__ENUM,
G_TYPE_NONE, 1,
GTK_TYPE_ORIENTATION);
/**
* GtkToolbar::style-changed:
* @toolbar: The #GtkToolbar which emitted the signal
* @style: the new #GtkToolbarStyle of the toolbar
*
* Emitted when the style of the toolbar changes.
*/
toolbar_signals[STYLE_CHANGED] =
g_signal_new (I_("style-changed"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkToolbarClass, style_changed),
NULL, NULL,
g_cclosure_marshal_VOID__ENUM,
G_TYPE_NONE, 1,
GTK_TYPE_TOOLBAR_STYLE);
/**
* GtkToolbar::popup-context-menu:
* @toolbar: the #GtkToolbar which emitted the signal
* @x: the x coordinate of the point where the menu should appear
* @y: the y coordinate of the point where the menu should appear
* @button: the mouse button the user pressed, or -1
*
* Emitted when the user right-clicks the toolbar or uses the
* keybinding to display a popup menu.
*
* Application developers should handle this signal if they want
* to display a context menu on the toolbar. The context-menu should
* appear at the coordinates given by @x and @y. The mouse button
* number is given by the @button parameter. If the menu was popped
* up using the keybaord, @button is -1.
*
* Returns: return %TRUE if the signal was handled, %FALSE if not
*/
toolbar_signals[POPUP_CONTEXT_MENU] =
g_signal_new (I_("popup-context-menu"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkToolbarClass, popup_context_menu),
_gtk_boolean_handled_accumulator, NULL,
_gtk_marshal_BOOLEAN__INT_INT_INT,
G_TYPE_BOOLEAN, 3,
G_TYPE_INT, G_TYPE_INT,
G_TYPE_INT);
/**
* GtkToolbar::focus-home-or-end:
* @toolbar: the #GtkToolbar which emitted the signal
* @focus_home: %TRUE if the first item should be focused
*
* A keybinding signal used internally by GTK+. This signal can't
* be used in application code
*
* Returns: %TRUE if the signal was handled, %FALSE if not
*/
toolbar_signals[FOCUS_HOME_OR_END] =
g_signal_new_class_handler (I_("focus-home-or-end"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gtk_toolbar_focus_home_or_end),
NULL, NULL,
_gtk_marshal_BOOLEAN__BOOLEAN,
G_TYPE_BOOLEAN, 1,
G_TYPE_BOOLEAN);
/* properties */
g_object_class_override_property (gobject_class,
PROP_ORIENTATION,
"orientation");
g_object_class_install_property (gobject_class,
PROP_TOOLBAR_STYLE,
g_param_spec_enum ("toolbar-style",
P_("Toolbar Style"),
P_("How to draw the toolbar"),
GTK_TYPE_TOOLBAR_STYLE,
DEFAULT_TOOLBAR_STYLE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (gobject_class,
PROP_SHOW_ARROW,
g_param_spec_boolean ("show-arrow",
P_("Show Arrow"),
P_("If an arrow should be shown if the toolbar doesn't fit"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkToolbar:icon-size:
*
* The size of the icons in a toolbar is normally determined by
* the toolbar-icon-size setting. When this property is set, it
* overrides the setting.
*
* This should only be used for special-purpose toolbars, normal
* application toolbars should respect the user preferences for the
* size of icons.
*
* Since: 2.10
*/
g_object_class_install_property (gobject_class,
PROP_ICON_SIZE,
g_param_spec_enum ("icon-size",
P_("Icon size"),
P_("Size of icons in this toolbar"),
GTK_TYPE_ICON_SIZE,
DEFAULT_ICON_SIZE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkToolbar:icon-size-set:
*
* Is %TRUE if the icon-size property has been set.
*
* Since: 2.10
*/
g_object_class_install_property (gobject_class,
PROP_ICON_SIZE_SET,
g_param_spec_boolean ("icon-size-set",
P_("Icon size set"),
P_("Whether the icon-size property has been set"),
FALSE,
GTK_PARAM_READWRITE));
/* child properties */
gtk_container_class_install_child_property (container_class,
CHILD_PROP_EXPAND,
g_param_spec_boolean ("expand",
P_("Expand"),
P_("Whether the item should receive extra space when the toolbar grows"),
FALSE,
GTK_PARAM_READWRITE));
gtk_container_class_install_child_property (container_class,
CHILD_PROP_HOMOGENEOUS,
g_param_spec_boolean ("homogeneous",
P_("Homogeneous"),
P_("Whether the item should be the same size as other homogeneous items"),
FALSE,
GTK_PARAM_READWRITE));
binding_set = gtk_binding_set_by_class (klass);
add_arrow_bindings (binding_set, GDK_KEY_Left, GTK_DIR_LEFT);
add_arrow_bindings (binding_set, GDK_KEY_Right, GTK_DIR_RIGHT);
add_arrow_bindings (binding_set, GDK_KEY_Up, GTK_DIR_UP);
add_arrow_bindings (binding_set, GDK_KEY_Down, GTK_DIR_DOWN);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Home, 0,
"focus-home-or-end", 1,
G_TYPE_BOOLEAN, TRUE);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Home, 0,
"focus-home-or-end", 1,
G_TYPE_BOOLEAN, TRUE);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_End, 0,
"focus-home-or-end", 1,
G_TYPE_BOOLEAN, FALSE);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_End, 0,
"focus-home-or-end", 1,
G_TYPE_BOOLEAN, FALSE);
add_ctrl_tab_bindings (binding_set, 0, GTK_DIR_TAB_FORWARD);
add_ctrl_tab_bindings (binding_set, GDK_SHIFT_MASK, GTK_DIR_TAB_BACKWARD);
gtk_widget_class_set_css_name (widget_class, "toolbar");
}
static void
toolbar_tool_shell_iface_init (GtkToolShellIface *iface)
{
iface->get_icon_size = toolbar_get_icon_size;
iface->get_orientation = toolbar_get_orientation;
iface->get_style = toolbar_get_style;
iface->rebuild_menu = toolbar_rebuild_menu;
}
static void
gtk_toolbar_init (GtkToolbar *toolbar)
{
GtkToolbarPrivate *priv;
GtkWidget *widget;
GtkCssNode *widget_node;
widget = GTK_WIDGET (toolbar);
toolbar->priv = gtk_toolbar_get_instance_private (toolbar);
priv = toolbar->priv;
gtk_widget_set_can_focus (widget, FALSE);
gtk_widget_set_has_window (widget, FALSE);
priv->orientation = GTK_ORIENTATION_HORIZONTAL;
priv->style = DEFAULT_TOOLBAR_STYLE;
priv->icon_size = DEFAULT_ICON_SIZE;
priv->animation = DEFAULT_ANIMATION_STATE;
_gtk_orientable_set_style_classes (GTK_ORIENTABLE (toolbar));
widget_node = gtk_widget_get_css_node (widget);
priv->gadget = gtk_css_custom_gadget_new_for_node (widget_node,
widget,
gtk_toolbar_measure,
gtk_toolbar_allocate,
gtk_toolbar_render,
NULL,
NULL, NULL);
priv->arrow_button = gtk_toggle_button_new ();
g_signal_connect (priv->arrow_button, "button-press-event",
G_CALLBACK (gtk_toolbar_arrow_button_press), toolbar);
g_signal_connect (priv->arrow_button, "clicked",
G_CALLBACK (gtk_toolbar_arrow_button_clicked), toolbar);
gtk_widget_set_focus_on_click (priv->arrow_button, FALSE);
priv->arrow = gtk_image_new_from_icon_name ("pan-down-symbolic", GTK_ICON_SIZE_BUTTON);
gtk_widget_set_name (priv->arrow, "gtk-toolbar-arrow");
gtk_widget_show (priv->arrow);
gtk_container_add (GTK_CONTAINER (priv->arrow_button), priv->arrow);
gtk_widget_set_parent (priv->arrow_button, widget);
/* which child position a drop will occur at */
priv->menu = NULL;
priv->show_arrow = TRUE;
priv->settings = NULL;
priv->max_homogeneous_pixels = -1;
priv->timer = g_timer_new ();
priv->click_gesture = gtk_gesture_multi_press_new (GTK_WIDGET (toolbar));
gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (priv->click_gesture), FALSE);
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (priv->click_gesture), 0);
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (priv->click_gesture), GTK_PHASE_BUBBLE);
g_signal_connect (priv->click_gesture, "pressed", G_CALLBACK (gtk_toolbar_pressed_cb), toolbar);
}
static void
gtk_toolbar_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkToolbar *toolbar = GTK_TOOLBAR (object);
GtkToolbarPrivate *priv = toolbar->priv;
switch (prop_id)
{
case PROP_ORIENTATION:
g_signal_emit (toolbar, toolbar_signals[ORIENTATION_CHANGED], 0,
g_value_get_enum (value));
break;
case PROP_TOOLBAR_STYLE:
gtk_toolbar_set_style (toolbar, g_value_get_enum (value));
break;
case PROP_SHOW_ARROW:
gtk_toolbar_set_show_arrow (toolbar, g_value_get_boolean (value));
break;
case PROP_ICON_SIZE:
gtk_toolbar_set_icon_size (toolbar, g_value_get_enum (value));
break;
case PROP_ICON_SIZE_SET:
if (g_value_get_boolean (value))
priv->icon_size_set = TRUE;
else
gtk_toolbar_unset_icon_size (toolbar);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_toolbar_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkToolbar *toolbar = GTK_TOOLBAR (object);
GtkToolbarPrivate *priv = toolbar->priv;
switch (prop_id)
{
case PROP_ORIENTATION:
g_value_set_enum (value, priv->orientation);
break;
case PROP_TOOLBAR_STYLE:
g_value_set_enum (value, priv->style);
break;
case PROP_SHOW_ARROW:
g_value_set_boolean (value, priv->show_arrow);
break;
case PROP_ICON_SIZE:
g_value_set_enum (value, gtk_toolbar_get_icon_size (toolbar));
break;
case PROP_ICON_SIZE_SET:
g_value_set_boolean (value, priv->icon_size_set);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_toolbar_map (GtkWidget *widget)
{
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GtkToolbarPrivate *priv = toolbar->priv;
GTK_WIDGET_CLASS (gtk_toolbar_parent_class)->map (widget);
if (priv->event_window)
gdk_window_show_unraised (priv->event_window);
}
static void
gtk_toolbar_unmap (GtkWidget *widget)
{
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GtkToolbarPrivate *priv = toolbar->priv;
if (priv->event_window)
gdk_window_hide (priv->event_window);
GTK_WIDGET_CLASS (gtk_toolbar_parent_class)->unmap (widget);
}
static void
gtk_toolbar_realize (GtkWidget *widget)
{
GtkAllocation allocation;
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GtkToolbarPrivate *priv = toolbar->priv;
GTK_WIDGET_CLASS (gtk_toolbar_parent_class)->realize (widget);
gtk_widget_get_allocation (widget, &allocation);
priv->event_window = gdk_window_new_input (gtk_widget_get_window (widget),
gtk_widget_get_events (widget)
| GDK_BUTTON_PRESS_MASK
| GDK_BUTTON_RELEASE_MASK
| GDK_POINTER_MOTION_MASK
| GDK_ENTER_NOTIFY_MASK
| GDK_LEAVE_NOTIFY_MASK,
&allocation);
gtk_widget_register_window (widget, priv->event_window);
}
static void
gtk_toolbar_unrealize (GtkWidget *widget)
{
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GtkToolbarPrivate *priv = toolbar->priv;
if (priv->event_window)
{
gtk_widget_unregister_window (widget, priv->event_window);
gdk_window_destroy (priv->event_window);
priv->event_window = NULL;
}
GTK_WIDGET_CLASS (gtk_toolbar_parent_class)->unrealize (widget);
}
static gboolean
gtk_toolbar_render (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height,
gpointer data)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GtkToolbarPrivate *priv = toolbar->priv;
GList *list;
for (list = priv->content; list != NULL; list = list->next)
{
ToolbarContent *content = list->data;
toolbar_content_draw (content, GTK_CONTAINER (widget), cr);
}
gtk_container_propagate_draw (GTK_CONTAINER (widget),
priv->arrow_button,
cr);
return FALSE;
}
static gint
gtk_toolbar_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GtkToolbarPrivate *priv = toolbar->priv;
gtk_css_gadget_draw (priv->gadget, cr);
return FALSE;
}
static void
gtk_toolbar_measure (GtkCssGadget *gadget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer data)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GtkToolbarPrivate *priv = toolbar->priv;
GList *list;
gint max_child_height;
gint max_child_width;
gint max_homogeneous_child_width;
gint max_homogeneous_child_height;
gint homogeneous_size;
gint pack_front_size;
GtkRequisition arrow_requisition, min_requisition, nat_requisition;
max_homogeneous_child_width = 0;
max_homogeneous_child_height = 0;
max_child_width = 0;
max_child_height = 0;
for (list = priv->content; list != NULL; list = list->next)
{
GtkRequisition requisition;
ToolbarContent *content = list->data;
if (!toolbar_content_visible (content, toolbar))
continue;
toolbar_content_size_request (content, toolbar, &requisition);
max_child_width = MAX (max_child_width, requisition.width);
max_child_height = MAX (max_child_height, requisition.height);
if (toolbar_content_is_homogeneous (content, toolbar))
{
max_homogeneous_child_width = MAX (max_homogeneous_child_width, requisition.width);
max_homogeneous_child_height = MAX (max_homogeneous_child_height, requisition.height);
}
}
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
homogeneous_size = max_homogeneous_child_width;
else
homogeneous_size = max_homogeneous_child_height;
pack_front_size = 0;
for (list = priv->content; list != NULL; list = list->next)
{
ToolbarContent *content = list->data;
guint size;
if (!toolbar_content_visible (content, toolbar))
continue;
if (toolbar_content_is_homogeneous (content, toolbar))
{
size = homogeneous_size;
}
else
{
GtkRequisition requisition;
toolbar_content_size_request (content, toolbar, &requisition);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
size = requisition.width;
else
size = requisition.height;
}
pack_front_size += size;
}
arrow_requisition.height = 0;
arrow_requisition.width = 0;
if (priv->show_arrow)
gtk_widget_get_preferred_size (priv->arrow_button,
&arrow_requisition, NULL);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
nat_requisition.width = pack_front_size;
nat_requisition.height = MAX (max_child_height, arrow_requisition.height);
min_requisition.width = priv->show_arrow ? arrow_requisition.width : nat_requisition.width;
min_requisition.height = nat_requisition.height;
}
else
{
nat_requisition.width = MAX (max_child_width, arrow_requisition.width);
nat_requisition.height = pack_front_size;
min_requisition.width = nat_requisition.width;
min_requisition.height = priv->show_arrow ? arrow_requisition.height : nat_requisition.height;
}
priv->button_maxw = max_homogeneous_child_width;
priv->button_maxh = max_homogeneous_child_height;
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
*minimum = min_requisition.width;
*natural = nat_requisition.width;
}
else
{
*minimum = min_requisition.height;
*natural = nat_requisition.height;
}
}
static void
gtk_toolbar_measure_ (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GtkToolbarPrivate *priv = toolbar->priv;
gtk_css_gadget_get_preferred_size (priv->gadget,
orientation,
for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
static gint
position (GtkToolbar *toolbar,
gint from,
gint to,
gdouble elapsed)
{
GtkToolbarPrivate *priv = toolbar->priv;
gint n_pixels;
if (!priv->animation)
return to;
if (elapsed <= ACCEL_THRESHOLD)
{
n_pixels = SLIDE_SPEED * elapsed;
}
else
{
/* The formula is a second degree polynomial in
* @elapsed that has the line SLIDE_SPEED * @elapsed
* as tangent for @elapsed == ACCEL_THRESHOLD.
* This makes @n_pixels a smooth function of elapsed time.
*/
n_pixels = (SLIDE_SPEED / ACCEL_THRESHOLD) * elapsed * elapsed -
SLIDE_SPEED * elapsed + SLIDE_SPEED * ACCEL_THRESHOLD;
}
if (to > from)
return MIN (from + n_pixels, to);
else
return MAX (from - n_pixels, to);
}
static void
compute_intermediate_allocation (GtkToolbar *toolbar,
const GtkAllocation *start,
const GtkAllocation *goal,
GtkAllocation *intermediate)
{
GtkToolbarPrivate *priv = toolbar->priv;
gdouble elapsed = g_timer_elapsed (priv->timer, NULL);
intermediate->x = position (toolbar, start->x, goal->x, elapsed);
intermediate->y = position (toolbar, start->y, goal->y, elapsed);
intermediate->width = position (toolbar, start->x + start->width,
goal->x + goal->width,
elapsed) - intermediate->x;
intermediate->height = position (toolbar, start->y + start->height,
goal->y + goal->height,
elapsed) - intermediate->y;
}
static void
fixup_allocation_for_rtl (gint total_size,
GtkAllocation *allocation)
{
allocation->x += (total_size - (2 * allocation->x + allocation->width));
}
static void
fixup_allocation_for_vertical (GtkAllocation *allocation)
{
gint tmp;
tmp = allocation->x;
allocation->x = allocation->y;
allocation->y = tmp;
tmp = allocation->width;
allocation->width = allocation->height;
allocation->height = tmp;
}
static gint
get_item_size (GtkToolbar *toolbar,
ToolbarContent *content)
{
GtkToolbarPrivate *priv = toolbar->priv;
GtkRequisition requisition;
toolbar_content_size_request (content, toolbar, &requisition);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (toolbar_content_is_homogeneous (content, toolbar))
return priv->button_maxw;
else
return requisition.width;
}
else
{
if (toolbar_content_is_homogeneous (content, toolbar))
return priv->button_maxh;
else
return requisition.height;
}
}
static gboolean
slide_idle_handler (gpointer data)
{
GtkToolbar *toolbar = GTK_TOOLBAR (data);
GtkToolbarPrivate *priv = toolbar->priv;
GList *list;
if (priv->need_sync)
{
gdk_flush ();
priv->need_sync = FALSE;
}
for (list = priv->content; list != NULL; list = list->next)
{
ToolbarContent *content = list->data;
ItemState state;
GtkAllocation goal_allocation;
GtkAllocation allocation;
gboolean cont;
state = toolbar_content_get_state (content);
toolbar_content_get_goal_allocation (content, &goal_allocation);
toolbar_content_get_allocation (content, &allocation);
cont = FALSE;
if (state == NOT_ALLOCATED)
{
/* an unallocated item means that size allocate has to
* called at least once more
*/
cont = TRUE;
}
/* An invisible item with a goal allocation of
* 0 is already at its goal.
*/
if ((state == NORMAL || state == OVERFLOWN) &&
((goal_allocation.width != 0 &&
goal_allocation.height != 0) ||
toolbar_content_child_visible (content)))
{
if ((goal_allocation.x != allocation.x ||
goal_allocation.y != allocation.y ||
goal_allocation.width != allocation.width ||
goal_allocation.height != allocation.height))
{
/* An item is not in its right position yet. Note
* that OVERFLOWN items do get an allocation in
* gtk_toolbar_size_allocate(). This way you can see
* them slide back in when you drag an item off the
* toolbar.
*/
cont = TRUE;
}
}
if (toolbar_content_is_placeholder (content) &&
toolbar_content_disappearing (content) &&
toolbar_content_child_visible (content))
{
/* A disappearing placeholder is still visible.
*/
cont = TRUE;
}
if (cont)
{
gtk_widget_queue_resize_no_redraw (GTK_WIDGET (toolbar));
return TRUE;
}
}
gtk_widget_queue_resize_no_redraw (GTK_WIDGET (toolbar));
priv->is_sliding = FALSE;
priv->idle_id = 0;
return FALSE;
}
static gboolean
rect_within (GtkAllocation *a1,
GtkAllocation *a2)
{
return (a1->x >= a2->x &&
a1->x + a1->width <= a2->x + a2->width &&
a1->y >= a2->y &&
a1->y + a1->height <= a2->y + a2->height);
}
static void
gtk_toolbar_begin_sliding (GtkToolbar *toolbar)
{
GtkAllocation content_allocation;
GtkWidget *widget = GTK_WIDGET (toolbar);
GtkToolbarPrivate *priv = toolbar->priv;
GList *list;
gint cur_x;
gint cur_y;
gboolean rtl;
gboolean vertical;
/* Start the sliding. This function copies the allocation of every
* item into content->start_allocation. For items that haven't
* been allocated yet, we calculate their position and save that
* in start_allocatino along with zero width and zero height.
*
* FIXME: It would be nice if we could share this code with
* the equivalent in gtk_widget_size_allocate().
*/
priv->is_sliding = TRUE;
if (!priv->idle_id)
{
priv->idle_id = gdk_threads_add_idle (slide_idle_handler, toolbar);
g_source_set_name_by_id (priv->idle_id, "[gtk+] slide_idle_handler");
}
gtk_css_gadget_get_content_allocation (priv->gadget,
&content_allocation, NULL);
rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
vertical = (priv->orientation == GTK_ORIENTATION_VERTICAL);
if (rtl)
{
cur_x = content_allocation.width;
cur_y = content_allocation.height;
}
else
{
cur_x = 0;
cur_y = 0;
}
cur_x += content_allocation.x;
cur_y += content_allocation.y;
for (list = priv->content; list != NULL; list = list->next)
{
ToolbarContent *content = list->data;
GtkAllocation new_start_allocation;
GtkAllocation item_allocation;
ItemState state;
state = toolbar_content_get_state (content);
toolbar_content_get_allocation (content, &item_allocation);
if ((state == NORMAL &&
rect_within (&item_allocation, &content_allocation)) ||
state == OVERFLOWN)
{
new_start_allocation = item_allocation;
}
else
{
new_start_allocation.x = cur_x;
new_start_allocation.y = cur_y;
if (vertical)
{
new_start_allocation.width = content_allocation.width;
new_start_allocation.height = 0;
}
else
{
new_start_allocation.width = 0;
new_start_allocation.height = content_allocation.height;
}
}
if (vertical)
cur_y = new_start_allocation.y + new_start_allocation.height;
else if (rtl)
cur_x = new_start_allocation.x;
else
cur_x = new_start_allocation.x + new_start_allocation.width;
toolbar_content_set_start_allocation (content, &new_start_allocation);
}
/* This resize will run before the first idle handler. This
* will make sure that items get the right goal allocation
* so that the idle handler will not immediately return
* FALSE
*/
gtk_widget_queue_resize_no_redraw (GTK_WIDGET (toolbar));
g_timer_reset (priv->timer);
}
static void
gtk_toolbar_stop_sliding (GtkToolbar *toolbar)
{
GtkToolbarPrivate *priv = toolbar->priv;
if (priv->is_sliding)
{
GList *list;
priv->is_sliding = FALSE;
if (priv->idle_id)
{
g_source_remove (priv->idle_id);
priv->idle_id = 0;
}
list = priv->content;
while (list)
{
ToolbarContent *content = list->data;
list = list->next;
if (toolbar_content_is_placeholder (content))
{
toolbar_content_remove (content, toolbar);
toolbar_content_free (content);
}
}
gtk_widget_queue_resize_no_redraw (GTK_WIDGET (toolbar));
}
}
static void
remove_item (GtkWidget *menu_item,
gpointer data)
{
gtk_container_remove (GTK_CONTAINER (gtk_widget_get_parent (menu_item)),
menu_item);
}
static void
menu_deactivated (GtkWidget *menu,
GtkToolbar *toolbar)
{
GtkToolbarPrivate *priv = toolbar->priv;
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->arrow_button), FALSE);
}
static void
menu_detached (GtkWidget *widget,
GtkMenu *menu)
{
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GtkToolbarPrivate *priv = toolbar->priv;
priv->menu = NULL;
}
static void
rebuild_menu (GtkToolbar *toolbar)
{
GtkToolbarPrivate *priv = toolbar->priv;
GList *list, *children;
if (!priv->menu)
{
priv->menu = GTK_MENU (gtk_menu_new ());
gtk_menu_attach_to_widget (priv->menu,
GTK_WIDGET (toolbar),
menu_detached);
g_signal_connect (priv->menu, "deactivate",
G_CALLBACK (menu_deactivated), toolbar);
}
gtk_container_foreach (GTK_CONTAINER (priv->menu), remove_item, NULL);
for (list = priv->content; list != NULL; list = list->next)
{
ToolbarContent *content = list->data;
if (toolbar_content_get_state (content) == OVERFLOWN &&
!toolbar_content_is_placeholder (content))
{
GtkWidget *menu_item = toolbar_content_retrieve_menu_item (content);
if (menu_item)
{
g_assert (GTK_IS_MENU_ITEM (menu_item));
gtk_menu_shell_append (GTK_MENU_SHELL (priv->menu), menu_item);
}
}
}
/* Remove leading and trailing separator items */
children = gtk_container_get_children (GTK_CONTAINER (priv->menu));
list = children;
while (list && GTK_IS_SEPARATOR_MENU_ITEM (list->data))
{
GtkWidget *child = list->data;
gtk_container_remove (GTK_CONTAINER (priv->menu), child);
list = list->next;
}
g_list_free (children);
/* Regenerate the list of children so we don't try to remove items twice */
children = gtk_container_get_children (GTK_CONTAINER (priv->menu));
list = g_list_last (children);
while (list && GTK_IS_SEPARATOR_MENU_ITEM (list->data))
{
GtkWidget *child = list->data;
gtk_container_remove (GTK_CONTAINER (priv->menu), child);
list = list->prev;
}
g_list_free (children);
priv->need_rebuild = FALSE;
}
static void
gtk_toolbar_allocate (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer data)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GtkToolbarPrivate *priv = toolbar->priv;
GtkAllocation arrow_allocation, item_area, widget_allocation;
GtkAllocation *allocations;
ItemState *new_states;
gint arrow_size;
gint size, pos, short_size;
GList *list;
gint i;
gboolean need_arrow;
gint n_expand_items;
gint available_size;
gint n_items;
gint needed_size;
GtkRequisition arrow_requisition;
gboolean overflowing;
gboolean size_changed;
gtk_widget_get_allocation (widget, &widget_allocation);
size_changed = FALSE;
if (widget_allocation.x != priv->prev_allocation.x ||
widget_allocation.y != priv->prev_allocation.y ||
widget_allocation.width != priv->prev_allocation.width ||
widget_allocation.height != priv->prev_allocation.height)
{
size_changed = TRUE;
}
if (size_changed)
gtk_toolbar_stop_sliding (toolbar);
gtk_widget_get_preferred_size (priv->arrow_button,
&arrow_requisition, NULL);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
available_size = size = allocation->width;
short_size = allocation->height;
arrow_size = arrow_requisition.width;
}
else
{
available_size = size = allocation->height;
short_size = allocation->width;
arrow_size = arrow_requisition.height;
}
n_items = g_list_length (priv->content);
allocations = g_new0 (GtkAllocation, n_items);
new_states = g_new0 (ItemState, n_items);
needed_size = 0;
need_arrow = FALSE;
for (list = priv->content; list != NULL; list = list->next)
{
ToolbarContent *content = list->data;
if (toolbar_content_visible (content, toolbar))
{
needed_size += get_item_size (toolbar, content);
/* Do we need an arrow?
*
* Assume we don't, and see if any non-separator item
* with a proxy menu item is then going to overflow.
*/
if (needed_size > available_size &&
!need_arrow &&
priv->show_arrow &&
toolbar_content_has_proxy_menu_item (content) &&
!toolbar_content_is_separator (content))
{
need_arrow = TRUE;
}
}
}
if (need_arrow)
size = available_size - arrow_size;
else
size = available_size;
/* calculate widths and states of items */
overflowing = FALSE;
for (list = priv->content, i = 0; list != NULL; list = list->next, ++i)
{
ToolbarContent *content = list->data;
gint item_size;
if (!toolbar_content_visible (content, toolbar))
{
new_states[i] = HIDDEN;
continue;
}
item_size = get_item_size (toolbar, content);
if (item_size <= size && !overflowing)
{
size -= item_size;
allocations[i].width = item_size;
new_states[i] = NORMAL;
}
else
{
overflowing = TRUE;
new_states[i] = OVERFLOWN;
allocations[i].width = item_size;
}
}
/* calculate width of arrow */
if (need_arrow)
{
arrow_allocation.width = arrow_size;
arrow_allocation.height = MAX (short_size, 1);
}
/* expand expandable items */
/* We don't expand when there is an overflow menu,
* because that leads to weird jumps when items get
* moved to the overflow menu and the expanding
* items suddenly get a lot of extra space
*/
if (!overflowing)
{
n_expand_items = 0;
for (i = 0, list = priv->content; list != NULL; list = list->next, ++i)
{
ToolbarContent *content = list->data;
if (toolbar_content_get_expand (content) && new_states[i] == NORMAL)
n_expand_items++;
}
for (list = priv->content, i = 0; list != NULL; list = list->next, ++i)
{
ToolbarContent *content = list->data;
if (toolbar_content_get_expand (content) && new_states[i] == NORMAL)
{
gint extra = size / n_expand_items;
if (size % n_expand_items != 0)
extra++;
allocations[i].width += extra;
size -= extra;
n_expand_items--;
}
}
g_assert (n_expand_items == 0);
}
/* position items */
pos = 0;
for (list = priv->content, i = 0; list != NULL; list = list->next, ++i)
{
/* Both NORMAL and OVERFLOWN items get a position.
* This ensures that sliding will work for OVERFLOWN items too.
*/
if (new_states[i] == NORMAL || new_states[i] == OVERFLOWN)
{
allocations[i].x = pos;
allocations[i].y = 0;
allocations[i].height = short_size;
pos += allocations[i].width;
}
}
/* position arrow */
if (need_arrow)
{
arrow_allocation.x = available_size - arrow_allocation.width;
arrow_allocation.y = 0;
}
item_area.x = 0;
item_area.y = 0;
item_area.width = available_size - (need_arrow? arrow_size : 0);
item_area.height = short_size;
/* fix up allocations in the vertical or RTL cases */
if (priv->orientation == GTK_ORIENTATION_VERTICAL)
{
for (i = 0; i < n_items; ++i)
fixup_allocation_for_vertical (&(allocations[i]));
if (need_arrow)
fixup_allocation_for_vertical (&arrow_allocation);
fixup_allocation_for_vertical (&item_area);
}
else if (gtk_widget_get_direction (GTK_WIDGET (toolbar)) == GTK_TEXT_DIR_RTL)
{
for (i = 0; i < n_items; ++i)
fixup_allocation_for_rtl (available_size, &(allocations[i]));
if (need_arrow)
fixup_allocation_for_rtl (available_size, &arrow_allocation);
fixup_allocation_for_rtl (available_size, &item_area);
}
/* translate the items by allocation->(x,y) */
for (i = 0; i < n_items; ++i)
{
allocations[i].x += allocation->x;
allocations[i].y += allocation->y;
}
if (need_arrow)
{
arrow_allocation.x += allocation->x;
arrow_allocation.y += allocation->y;
}
item_area.x += allocation->x;
item_area.y += allocation->y;
/* did anything change? */
for (list = priv->content, i = 0; list != NULL; list = list->next, i++)
{
ToolbarContent *content = list->data;
if (toolbar_content_get_state (content) == NORMAL &&
new_states[i] != NORMAL)
{
/* an item disappeared and we didn't change size, so begin sliding */
if (!size_changed)
gtk_toolbar_begin_sliding (toolbar);
}
}
/* finally allocate the items */
if (priv->is_sliding)
{
for (list = priv->content, i = 0; list != NULL; list = list->next, i++)
{
ToolbarContent *content = list->data;
toolbar_content_set_goal_allocation (content, &(allocations[i]));
}
}
for (list = priv->content, i = 0; list != NULL; list = list->next, ++i)
{
ToolbarContent *content = list->data;
if (new_states[i] == OVERFLOWN || new_states[i] == NORMAL)
{
GtkAllocation alloc;
GtkAllocation start_allocation = { 0, };
GtkAllocation goal_allocation;
if (priv->is_sliding)
{
toolbar_content_get_start_allocation (content, &start_allocation);
toolbar_content_get_goal_allocation (content, &goal_allocation);
compute_intermediate_allocation (toolbar,
&start_allocation,
&goal_allocation,
&alloc);
priv->need_sync = TRUE;
}
else
{
alloc = allocations[i];
}
if (alloc.width <= 0 || alloc.height <= 0)
{
toolbar_content_set_child_visible (content, toolbar, FALSE);
}
else
{
if (!rect_within (&alloc, &item_area))
{
toolbar_content_set_child_visible (content, toolbar, FALSE);
toolbar_content_size_allocate (content, &alloc);
}
else
{
toolbar_content_set_child_visible (content, toolbar, TRUE);
toolbar_content_size_allocate (content, &alloc);
}
}
}
else
{
toolbar_content_set_child_visible (content, toolbar, FALSE);
}
toolbar_content_set_state (content, new_states[i]);
}
if (priv->menu && priv->need_rebuild)
rebuild_menu (toolbar);
if (need_arrow)
{
gtk_widget_size_allocate (GTK_WIDGET (priv->arrow_button),
&arrow_allocation);
gtk_widget_show (GTK_WIDGET (priv->arrow_button));
}
else
{
gtk_widget_hide (GTK_WIDGET (priv->arrow_button));
if (priv->menu && gtk_widget_get_visible (GTK_WIDGET (priv->menu)))
gtk_menu_shell_deactivate (GTK_MENU_SHELL (priv->menu));
}
g_free (allocations);
g_free (new_states);
}
static void
gtk_toolbar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GtkToolbarPrivate *priv = toolbar->priv;
GtkAllocation clip;
gtk_widget_set_allocation (widget, allocation);
if (gtk_widget_get_realized (widget))
gdk_window_move_resize (priv->event_window,
allocation->x,
allocation->y,
allocation->width,
allocation->height);
gtk_css_gadget_allocate (priv->gadget,
allocation,
gtk_widget_get_allocated_baseline (widget),
&clip);
gtk_widget_set_clip (widget, &clip);
}
static void
gtk_toolbar_style_updated (GtkWidget *widget)
{
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GtkToolbarPrivate *priv = toolbar->priv;
GTK_WIDGET_CLASS (gtk_toolbar_parent_class)->style_updated (widget);
priv->max_homogeneous_pixels = -1;
}
static GList *
gtk_toolbar_list_children_in_focus_order (GtkToolbar *toolbar,
GtkDirectionType dir)
{
GtkToolbarPrivate *priv = toolbar->priv;
GList *result = NULL;
GList *list;
gboolean rtl;
/* generate list of children in reverse logical order */
for (list = priv->content; list != NULL; list = list->next)
{
ToolbarContent *content = list->data;
GtkWidget *widget;
widget = toolbar_content_get_widget (content);
if (widget)
result = g_list_prepend (result, widget);
}
result = g_list_prepend (result, priv->arrow_button);
rtl = (gtk_widget_get_direction (GTK_WIDGET (toolbar)) == GTK_TEXT_DIR_RTL);
/* move in logical order when
*
* - dir is TAB_FORWARD
*
* - in RTL mode and moving left or up
*
* - in LTR mode and moving right or down
*/
if (dir == GTK_DIR_TAB_FORWARD ||
(rtl && (dir == GTK_DIR_UP || dir == GTK_DIR_LEFT)) ||
(!rtl && (dir == GTK_DIR_DOWN || dir == GTK_DIR_RIGHT)))
{
result = g_list_reverse (result);
}
return result;
}
static gboolean
gtk_toolbar_focus_home_or_end (GtkToolbar *toolbar,
gboolean focus_home)
{
GList *children, *list;
GtkDirectionType dir = focus_home? GTK_DIR_RIGHT : GTK_DIR_LEFT;
children = gtk_toolbar_list_children_in_focus_order (toolbar, dir);
if (gtk_widget_get_direction (GTK_WIDGET (toolbar)) == GTK_TEXT_DIR_RTL)
{
children = g_list_reverse (children);
dir = (dir == GTK_DIR_RIGHT)? GTK_DIR_LEFT : GTK_DIR_RIGHT;
}
for (list = children; list != NULL; list = list->next)
{
GtkWidget *child = list->data;
if (gtk_container_get_focus_child (GTK_CONTAINER (toolbar)) == child)
break;
if (gtk_widget_get_mapped (child) && gtk_widget_child_focus (child, dir))
break;
}
g_list_free (children);
return TRUE;
}
/* Keybinding handler. This function is called when the user presses
* Ctrl TAB or an arrow key.
*/
static void
gtk_toolbar_move_focus (GtkWidget *widget,
GtkDirectionType dir)
{
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GtkContainer *container = GTK_CONTAINER (toolbar);
GtkWidget *focus_child;
GList *list;
gboolean try_focus = FALSE;
GList *children;
focus_child = gtk_container_get_focus_child (container);
if (focus_child && gtk_widget_child_focus (focus_child, dir))
return;
children = gtk_toolbar_list_children_in_focus_order (toolbar, dir);
for (list = children; list != NULL; list = list->next)
{
GtkWidget *child = list->data;
if (try_focus && gtk_widget_get_mapped (child) && gtk_widget_child_focus (child, dir))
break;
if (child == focus_child)
try_focus = TRUE;
}
g_list_free (children);
}
/* The focus handler for the toolbar. It called when the user presses
* TAB or otherwise tries to focus the toolbar.
*/
static gboolean
gtk_toolbar_focus (GtkWidget *widget,
GtkDirectionType dir)
{
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GList *children, *list;
gboolean result = FALSE;
/* if focus is already somewhere inside the toolbar then return FALSE.
* The only way focus can stay inside the toolbar is when the user presses
* arrow keys or Ctrl TAB (both of which are handled by the
* gtk_toolbar_move_focus() keybinding function.
*/
if (gtk_container_get_focus_child (GTK_CONTAINER (widget)))
return FALSE;
children = gtk_toolbar_list_children_in_focus_order (toolbar, dir);
for (list = children; list != NULL; list = list->next)
{
GtkWidget *child = list->data;
if (gtk_widget_get_mapped (child) && gtk_widget_child_focus (child, dir))
{
result = TRUE;
break;
}
}
g_list_free (children);
return result;
}
static GtkSettings *
toolbar_get_settings (GtkToolbar *toolbar)
{
return toolbar->priv->settings;
}
static void
animation_change_notify (GtkToolbar *toolbar)
{
GtkToolbarPrivate *priv = toolbar->priv;
GtkSettings *settings = toolbar_get_settings (toolbar);
gboolean animation;
if (settings)
g_object_get (settings,
"gtk-enable-animations", &animation,
NULL);
else
animation = DEFAULT_ANIMATION_STATE;
priv->animation = animation;
}
static void
settings_change_notify (GtkSettings *settings,
const GParamSpec *pspec,
GtkToolbar *toolbar)
{
if (! strcmp (pspec->name, "gtk-enable-animations"))
animation_change_notify (toolbar);
}
static void
gtk_toolbar_screen_changed (GtkWidget *widget,
GdkScreen *previous_screen)
{
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GtkToolbarPrivate *priv = toolbar->priv;
GtkSettings *old_settings = toolbar_get_settings (toolbar);
GtkSettings *settings;
if (gtk_widget_has_screen (GTK_WIDGET (toolbar)))
settings = gtk_widget_get_settings (GTK_WIDGET (toolbar));
else
settings = NULL;
if (settings == old_settings)
return;
if (old_settings)
{
g_signal_handler_disconnect (old_settings, priv->settings_connection);
priv->settings_connection = 0;
g_object_unref (old_settings);
}
if (settings)
{
priv->settings_connection =
g_signal_connect (settings, "notify",
G_CALLBACK (settings_change_notify),
toolbar);
priv->settings = g_object_ref (settings);
}
else
priv->settings = NULL;
animation_change_notify (toolbar);
}
static int
find_drop_index (GtkToolbar *toolbar,
gint x,
gint y)
{
GtkToolbarPrivate *priv = toolbar->priv;
GList *interesting_content;
GList *list;
GtkOrientation orientation;
GtkTextDirection direction;
gint best_distance = G_MAXINT;
gint distance;
gint cursor;
gint pos;
ToolbarContent *best_content;
GtkAllocation allocation;
/* list items we care about wrt. drag and drop */
interesting_content = NULL;
for (list = priv->content; list != NULL; list = list->next)
{
ToolbarContent *content = list->data;
if (toolbar_content_get_state (content) == NORMAL)
interesting_content = g_list_prepend (interesting_content, content);
}
interesting_content = g_list_reverse (interesting_content);
if (!interesting_content)
return 0;
orientation = priv->orientation;
direction = gtk_widget_get_direction (GTK_WIDGET (toolbar));
/* distance to first interesting item */
best_content = interesting_content->data;
toolbar_content_get_allocation (best_content, &allocation);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
cursor = x;
if (direction == GTK_TEXT_DIR_LTR)
pos = allocation.x;
else
pos = allocation.x + allocation.width;
}
else
{
cursor = y;
pos = allocation.y;
}
best_content = NULL;
best_distance = ABS (pos - cursor);
/* distance to far end of each item */
for (list = interesting_content; list != NULL; list = list->next)
{
ToolbarContent *content = list->data;
toolbar_content_get_allocation (content, &allocation);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (direction == GTK_TEXT_DIR_LTR)
pos = allocation.x + allocation.width;
else
pos = allocation.x;
}
else
{
pos = allocation.y + allocation.height;
}
distance = ABS (pos - cursor);
if (distance < best_distance)
{
best_distance = distance;
best_content = content;
}
}
g_list_free (interesting_content);
if (!best_content)
return 0;
else
return g_list_index (priv->content, best_content) + 1;
}
static void
reset_all_placeholders (GtkToolbar *toolbar)
{
GtkToolbarPrivate *priv = toolbar->priv;
GList *list;
for (list = priv->content; list != NULL; list = list->next)
{
ToolbarContent *content = list->data;
if (toolbar_content_is_placeholder (content))
toolbar_content_set_disappearing (content, TRUE);
}
}
static gint
physical_to_logical (GtkToolbar *toolbar,
gint physical)
{
GtkToolbarPrivate *priv = toolbar->priv;
GList *list;
int logical;
g_assert (physical >= 0);
logical = 0;
for (list = priv->content; list && physical > 0; list = list->next)
{
ToolbarContent *content = list->data;
if (!toolbar_content_is_placeholder (content))
logical++;
physical--;
}
g_assert (physical == 0);
return logical;
}
static gint
logical_to_physical (GtkToolbar *toolbar,
gint logical)
{
GtkToolbarPrivate *priv = toolbar->priv;
GList *list;
gint physical;
g_assert (logical >= 0);
physical = 0;
for (list = priv->content; list; list = list->next)
{
ToolbarContent *content = list->data;
if (!toolbar_content_is_placeholder (content))
{
if (logical == 0)
break;
logical--;
}
physical++;
}
g_assert (logical == 0);
return physical;
}
/**
* gtk_toolbar_set_drop_highlight_item:
* @toolbar: a #GtkToolbar
* @tool_item: (allow-none): a #GtkToolItem, or %NULL to turn of highlighting
* @index_: a position on @toolbar
*
* Highlights @toolbar to give an idea of what it would look like
* if @item was added to @toolbar at the position indicated by @index_.
* If @item is %NULL, highlighting is turned off. In that case @index_
* is ignored.
*
* The @tool_item passed to this function must not be part of any widget
* hierarchy. When an item is set as drop highlight item it can not
* added to any widget hierarchy or used as highlight item for another
* toolbar.
*
* Since: 2.4
**/
void
gtk_toolbar_set_drop_highlight_item (GtkToolbar *toolbar,
GtkToolItem *tool_item,
gint index_)
{
ToolbarContent *content;
GtkToolbarPrivate *priv;
gint n_items;
GtkRequisition requisition;
GtkRequisition old_requisition;
gboolean restart_sliding;
g_return_if_fail (GTK_IS_TOOLBAR (toolbar));
g_return_if_fail (tool_item == NULL || GTK_IS_TOOL_ITEM (tool_item));
priv = toolbar->priv;
if (!tool_item)
{
if (priv->highlight_tool_item)
{
gtk_widget_unparent (GTK_WIDGET (priv->highlight_tool_item));
g_object_unref (priv->highlight_tool_item);
priv->highlight_tool_item = NULL;
}
reset_all_placeholders (toolbar);
gtk_toolbar_begin_sliding (toolbar);
return;
}
n_items = gtk_toolbar_get_n_items (toolbar);
if (index_ < 0 || index_ > n_items)
index_ = n_items;
if (tool_item != priv->highlight_tool_item)
{
if (priv->highlight_tool_item)
g_object_unref (priv->highlight_tool_item);
g_object_ref_sink (tool_item);
priv->highlight_tool_item = tool_item;
gtk_widget_set_parent (GTK_WIDGET (priv->highlight_tool_item),
GTK_WIDGET (toolbar));
}
index_ = logical_to_physical (toolbar, index_);
content = g_list_nth_data (priv->content, index_);
if (index_ > 0)
{
ToolbarContent *prev_content;
prev_content = g_list_nth_data (priv->content, index_ - 1);
if (prev_content && toolbar_content_is_placeholder (prev_content))
content = prev_content;
}
if (!content || !toolbar_content_is_placeholder (content))
{
GtkWidget *placeholder;
placeholder = GTK_WIDGET (gtk_separator_tool_item_new ());
content = toolbar_content_new_tool_item (toolbar,
GTK_TOOL_ITEM (placeholder),
TRUE, index_);
gtk_widget_show (placeholder);
}
g_assert (content);
g_assert (toolbar_content_is_placeholder (content));
gtk_widget_get_preferred_size (GTK_WIDGET (priv->highlight_tool_item),
&requisition, NULL);
toolbar_content_set_expand (content, gtk_tool_item_get_expand (tool_item));
restart_sliding = FALSE;
toolbar_content_size_request (content, toolbar, &old_requisition);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
requisition.height = -1;
if (requisition.width != old_requisition.width)
restart_sliding = TRUE;
}
else
{
requisition.width = -1;
if (requisition.height != old_requisition.height)
restart_sliding = TRUE;
}
if (toolbar_content_disappearing (content))
restart_sliding = TRUE;
reset_all_placeholders (toolbar);
toolbar_content_set_disappearing (content, FALSE);
toolbar_content_set_size_request (content,
requisition.width, requisition.height);
if (restart_sliding)
gtk_toolbar_begin_sliding (toolbar);
}
static void
gtk_toolbar_get_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkToolItem *item = GTK_TOOL_ITEM (child);
switch (property_id)
{
case CHILD_PROP_HOMOGENEOUS:
g_value_set_boolean (value, gtk_tool_item_get_homogeneous (item));
break;
case CHILD_PROP_EXPAND:
g_value_set_boolean (value, gtk_tool_item_get_expand (item));
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
break;
}
}
static void
gtk_toolbar_set_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id)
{
case CHILD_PROP_HOMOGENEOUS:
gtk_tool_item_set_homogeneous (GTK_TOOL_ITEM (child), g_value_get_boolean (value));
break;
case CHILD_PROP_EXPAND:
gtk_tool_item_set_expand (GTK_TOOL_ITEM (child), g_value_get_boolean (value));
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
break;
}
}
static void
gtk_toolbar_show_all (GtkWidget *widget)
{
GtkToolbar *toolbar = GTK_TOOLBAR (widget);
GtkToolbarPrivate *priv = toolbar->priv;
GList *list;
for (list = priv->content; list != NULL; list = list->next)
{
ToolbarContent *content = list->data;
toolbar_content_show_all (content);
}
gtk_widget_show (widget);
}
static void
gtk_toolbar_add (GtkContainer *container,
GtkWidget *widget)
{
GtkToolbar *toolbar = GTK_TOOLBAR (container);
gtk_toolbar_insert (toolbar, GTK_TOOL_ITEM (widget), -1);
}
static void
gtk_toolbar_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkToolbar *toolbar = GTK_TOOLBAR (container);
GtkToolbarPrivate *priv = toolbar->priv;
ToolbarContent *content_to_remove;
GList *list;
content_to_remove = NULL;
for (list = priv->content; list != NULL; list = list->next)
{
ToolbarContent *content = list->data;
GtkWidget *child;
child = toolbar_content_get_widget (content);
if (child && child == widget)
{
content_to_remove = content;
break;
}
}
g_return_if_fail (content_to_remove != NULL);
toolbar_content_remove (content_to_remove, toolbar);
toolbar_content_free (content_to_remove);
}
static void
gtk_toolbar_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkToolbar *toolbar = GTK_TOOLBAR (container);
GtkToolbarPrivate *priv = toolbar->priv;
GList *list;
g_return_if_fail (callback != NULL);
list = priv->content;
while (list)
{
ToolbarContent *content = list->data;
GList *next = list->next;
if (include_internals || !toolbar_content_is_placeholder (content))
{
GtkWidget *child = toolbar_content_get_widget (content);
if (child)
callback (child, callback_data);
}
list = next;
}
if (include_internals && priv->arrow_button)
callback (priv->arrow_button, callback_data);
}
static GType
gtk_toolbar_child_type (GtkContainer *container)
{
return GTK_TYPE_TOOL_ITEM;
}
static void
gtk_toolbar_reconfigured (GtkToolbar *toolbar)
{
GtkToolbarPrivate *priv = toolbar->priv;
GList *list;
list = priv->content;
while (list)
{
ToolbarContent *content = list->data;
GList *next = list->next;
toolbar_content_toolbar_reconfigured (content, toolbar);
list = next;
}
}
static void
gtk_toolbar_orientation_changed (GtkToolbar *toolbar,
GtkOrientation orientation)
{
GtkToolbarPrivate *priv = toolbar->priv;
if (priv->orientation != orientation)
{
priv->orientation = orientation;
if (orientation == GTK_ORIENTATION_HORIZONTAL)
gtk_image_set_from_icon_name (GTK_IMAGE (priv->arrow), "pan-down-symbolic", GTK_ICON_SIZE_BUTTON);
else
gtk_image_set_from_icon_name (GTK_IMAGE (priv->arrow), "pan-end-symbolic", GTK_ICON_SIZE_BUTTON);
gtk_toolbar_reconfigured (toolbar);
_gtk_orientable_set_style_classes (GTK_ORIENTABLE (toolbar));
gtk_widget_queue_resize (GTK_WIDGET (toolbar));
g_object_notify (G_OBJECT (toolbar), "orientation");
}
}
static void
gtk_toolbar_real_style_changed (GtkToolbar *toolbar,
GtkToolbarStyle style)
{
GtkToolbarPrivate *priv = toolbar->priv;
if (priv->style != style)
{
priv->style = style;
gtk_toolbar_reconfigured (toolbar);
gtk_widget_queue_resize (GTK_WIDGET (toolbar));
g_object_notify (G_OBJECT (toolbar), "toolbar-style");
}
}
static void
show_menu (GtkToolbar *toolbar,
GdkEventButton *event)
{
GtkToolbarPrivate *priv = toolbar->priv;
GtkRequisition minimum_size;
rebuild_menu (toolbar);
gtk_widget_show_all (GTK_WIDGET (priv->menu));
switch (priv->orientation)
{
case GTK_ORIENTATION_HORIZONTAL:
gtk_widget_get_preferred_size (priv->arrow_button, &minimum_size, NULL);
g_object_set (priv->menu,
"anchor-hints", (GDK_ANCHOR_FLIP_Y |
GDK_ANCHOR_SLIDE |
GDK_ANCHOR_RESIZE),
"menu-type-hint", GDK_WINDOW_TYPE_HINT_DROPDOWN_MENU,
"rect-anchor-dx", -minimum_size.width,
NULL);
gtk_menu_popup_at_widget (priv->menu,
priv->arrow_button,
GDK_GRAVITY_SOUTH_EAST,
GDK_GRAVITY_NORTH_WEST,
(GdkEvent *) event);
break;
case GTK_ORIENTATION_VERTICAL:
g_object_set (priv->menu,
"anchor-hints", (GDK_ANCHOR_FLIP_X |
GDK_ANCHOR_SLIDE |
GDK_ANCHOR_RESIZE),
NULL);
gtk_menu_popup_at_widget (priv->menu,
priv->arrow_button,
GDK_GRAVITY_NORTH_EAST,
GDK_GRAVITY_NORTH_WEST,
(GdkEvent *) event);
break;
}
}
static void
gtk_toolbar_arrow_button_clicked (GtkWidget *button,
GtkToolbar *toolbar)
{
GtkToolbarPrivate *priv = toolbar->priv;
if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->arrow_button)) &&
(!priv->menu || !gtk_widget_get_visible (GTK_WIDGET (priv->menu))))
{
/* We only get here when the button is clicked with the keyboard,
* because mouse button presses result in the menu being shown so
* that priv->menu would be non-NULL and visible.
*/
show_menu (toolbar, NULL);
gtk_menu_shell_select_first (GTK_MENU_SHELL (priv->menu), FALSE);
}
}
static gboolean
gtk_toolbar_arrow_button_press (GtkWidget *button,
GdkEventButton *event,
GtkToolbar *toolbar)
{
show_menu (toolbar, event);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE);
return TRUE;
}
static void
gtk_toolbar_pressed_cb (GtkGestureMultiPress *gesture,
int n_press,
double x,
double y,
gpointer user_data)
{
GtkToolbar *toolbar = user_data;
GdkEventSequence *sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
const GdkEvent *event = gtk_gesture_get_last_event (GTK_GESTURE (gesture), sequence);
int button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));
if (gdk_event_triggers_context_menu (event))
{
gboolean return_value;
g_signal_emit (toolbar, toolbar_signals[POPUP_CONTEXT_MENU], 0,
(int)x, (int)y, button, &return_value);
if (return_value)
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
else
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_DENIED);
}
}
static gboolean
gtk_toolbar_popup_menu (GtkWidget *toolbar)
{
gboolean return_value;
/* This function is the handler for the "popup menu" keybinding,
* ie., it is called when the user presses Shift F10
*/
g_signal_emit (toolbar, toolbar_signals[POPUP_CONTEXT_MENU], 0,
-1, -1, -1, &return_value);
return return_value;
}
/**
* gtk_toolbar_new:
*
* Creates a new toolbar.
* Returns: the newly-created toolbar.
**/
GtkWidget *
gtk_toolbar_new (void)
{
GtkToolbar *toolbar;
toolbar = g_object_new (GTK_TYPE_TOOLBAR, NULL);
return GTK_WIDGET (toolbar);
}
/**
* gtk_toolbar_insert:
* @toolbar: a #GtkToolbar
* @item: a #GtkToolItem
* @pos: the position of the new item
*
* Insert a #GtkToolItem into the toolbar at position @pos. If @pos is
* 0 the item is prepended to the start of the toolbar. If @pos is
* negative, the item is appended to the end of the toolbar.
*
* Since: 2.4
**/
void
gtk_toolbar_insert (GtkToolbar *toolbar,
GtkToolItem *item,
gint pos)
{
g_return_if_fail (GTK_IS_TOOLBAR (toolbar));
g_return_if_fail (GTK_IS_TOOL_ITEM (item));
pos = MIN (pos, (int)g_list_length (toolbar->priv->content));
if (pos >= 0)
pos = logical_to_physical (toolbar, pos);
toolbar_content_new_tool_item (toolbar, item, FALSE, pos);
}
/**
* gtk_toolbar_get_item_index:
* @toolbar: a #GtkToolbar
* @item: a #GtkToolItem that is a child of @toolbar
*
* Returns the position of @item on the toolbar, starting from 0.
* It is an error if @item is not a child of the toolbar.
*
* Returns: the position of item on the toolbar.
*
* Since: 2.4
**/
gint
gtk_toolbar_get_item_index (GtkToolbar *toolbar,
GtkToolItem *item)
{
GtkToolbarPrivate *priv;
GList *list;
int n;
g_return_val_if_fail (GTK_IS_TOOLBAR (toolbar), -1);
g_return_val_if_fail (GTK_IS_TOOL_ITEM (item), -1);
g_return_val_if_fail (gtk_widget_get_parent (GTK_WIDGET (item)) == GTK_WIDGET (toolbar), -1);
priv = toolbar->priv;
n = 0;
for (list = priv->content; list != NULL; list = list->next)
{
ToolbarContent *content = list->data;
GtkWidget *widget;
widget = toolbar_content_get_widget (content);
if (item == GTK_TOOL_ITEM (widget))
break;
++n;
}
return physical_to_logical (toolbar, n);
}
/**
* gtk_toolbar_set_style:
* @toolbar: a #GtkToolbar.
* @style: the new style for @toolbar.
*
* Alters the view of @toolbar to display either icons only, text only, or both.
**/
void
gtk_toolbar_set_style (GtkToolbar *toolbar,
GtkToolbarStyle style)
{
GtkToolbarPrivate *priv;
g_return_if_fail (GTK_IS_TOOLBAR (toolbar));
priv = toolbar->priv;
priv->style_set = TRUE;
g_signal_emit (toolbar, toolbar_signals[STYLE_CHANGED], 0, style);
}
/**
* gtk_toolbar_get_style:
* @toolbar: a #GtkToolbar
*
* Retrieves whether the toolbar has text, icons, or both . See
* gtk_toolbar_set_style().
* Returns: the current style of @toolbar
**/
GtkToolbarStyle
gtk_toolbar_get_style (GtkToolbar *toolbar)
{
g_return_val_if_fail (GTK_IS_TOOLBAR (toolbar), DEFAULT_TOOLBAR_STYLE);
return toolbar->priv->style;
}
/**
* gtk_toolbar_unset_style:
* @toolbar: a #GtkToolbar
*
* Unsets a toolbar style set with gtk_toolbar_set_style(), so that
* user preferences will be used to determine the toolbar style.
**/
void
gtk_toolbar_unset_style (GtkToolbar *toolbar)
{
GtkToolbarPrivate *priv;
GtkToolbarStyle style;
g_return_if_fail (GTK_IS_TOOLBAR (toolbar));
priv = toolbar->priv;
if (priv->style_set)
{
style = DEFAULT_TOOLBAR_STYLE;
if (style != priv->style)
g_signal_emit (toolbar, toolbar_signals[STYLE_CHANGED], 0, style);
priv->style_set = FALSE;
}
}
/**
* gtk_toolbar_get_n_items:
* @toolbar: a #GtkToolbar
*
* Returns the number of items on the toolbar.
*
* Returns: the number of items on the toolbar
*
* Since: 2.4
**/
gint
gtk_toolbar_get_n_items (GtkToolbar *toolbar)
{
GtkToolbarPrivate *priv;
g_return_val_if_fail (GTK_IS_TOOLBAR (toolbar), -1);
priv = toolbar->priv;
return physical_to_logical (toolbar, g_list_length (priv->content));
}
/**
* gtk_toolbar_get_nth_item:
* @toolbar: a #GtkToolbar
* @n: A position on the toolbar
*
* Returns the @n'th item on @toolbar, or %NULL if the
* toolbar does not contain an @n'th item.
*
* Returns: (nullable) (transfer none): The @n'th #GtkToolItem on @toolbar,
* or %NULL if there isn’t an @n'th item.
*
* Since: 2.4
**/
GtkToolItem *
gtk_toolbar_get_nth_item (GtkToolbar *toolbar,
gint n)
{
GtkToolbarPrivate *priv;
ToolbarContent *content;
gint n_items;
g_return_val_if_fail (GTK_IS_TOOLBAR (toolbar), NULL);
priv = toolbar->priv;
n_items = gtk_toolbar_get_n_items (toolbar);
if (n < 0 || n >= n_items)
return NULL;
content = g_list_nth_data (priv->content, logical_to_physical (toolbar, n));
g_assert (content);
g_assert (!toolbar_content_is_placeholder (content));
return GTK_TOOL_ITEM (toolbar_content_get_widget (content));
}
/**
* gtk_toolbar_get_icon_size:
* @toolbar: a #GtkToolbar
*
* Retrieves the icon size for the toolbar. See gtk_toolbar_set_icon_size().
*
* Returns: the current icon size for the icons on the toolbar.
**/
GtkIconSize
gtk_toolbar_get_icon_size (GtkToolbar *toolbar)
{
g_return_val_if_fail (GTK_IS_TOOLBAR (toolbar), DEFAULT_ICON_SIZE);
return toolbar->priv->icon_size;
}
/**
* gtk_toolbar_set_show_arrow:
* @toolbar: a #GtkToolbar
* @show_arrow: Whether to show an overflow menu
*
* Sets whether to show an overflow menu when
* @toolbar doesn’t have room for all items on it. If %TRUE,
* items that there are not room are available through an
* overflow menu.
*
* Since: 2.4
**/
void
gtk_toolbar_set_show_arrow (GtkToolbar *toolbar,
gboolean show_arrow)
{
GtkToolbarPrivate *priv;
g_return_if_fail (GTK_IS_TOOLBAR (toolbar));
priv = toolbar->priv;
show_arrow = show_arrow != FALSE;
if (priv->show_arrow != show_arrow)
{
priv->show_arrow = show_arrow;
if (!priv->show_arrow)
gtk_widget_hide (priv->arrow_button);
gtk_widget_queue_resize (GTK_WIDGET (toolbar));
g_object_notify (G_OBJECT (toolbar), "show-arrow");
}
}
/**
* gtk_toolbar_get_show_arrow:
* @toolbar: a #GtkToolbar
*
* Returns whether the toolbar has an overflow menu.
* See gtk_toolbar_set_show_arrow().
*
* Returns: %TRUE if the toolbar has an overflow menu.
*
* Since: 2.4
**/
gboolean
gtk_toolbar_get_show_arrow (GtkToolbar *toolbar)
{
g_return_val_if_fail (GTK_IS_TOOLBAR (toolbar), FALSE);
return toolbar->priv->show_arrow;
}
/**
* gtk_toolbar_get_drop_index:
* @toolbar: a #GtkToolbar
* @x: x coordinate of a point on the toolbar
* @y: y coordinate of a point on the toolbar
*
* Returns the position corresponding to the indicated point on
* @toolbar. This is useful when dragging items to the toolbar:
* this function returns the position a new item should be
* inserted.
*
* @x and @y are in @toolbar coordinates.
*
* Returns: The position corresponding to the point (@x, @y) on the toolbar.
*
* Since: 2.4
**/
gint
gtk_toolbar_get_drop_index (GtkToolbar *toolbar,
gint x,
gint y)
{
g_return_val_if_fail (GTK_IS_TOOLBAR (toolbar), -1);
return physical_to_logical (toolbar, find_drop_index (toolbar, x, y));
}
static void
gtk_toolbar_dispose (GObject *object)
{
GtkToolbar *toolbar = GTK_TOOLBAR (object);
GtkToolbarPrivate *priv = toolbar->priv;
if (priv->arrow_button)
{
gtk_widget_unparent (priv->arrow_button);
priv->arrow_button = NULL;
}
if (priv->menu)
{
g_signal_handlers_disconnect_by_func (priv->menu,
menu_deactivated, toolbar);
gtk_widget_destroy (GTK_WIDGET (priv->menu));
priv->menu = NULL;
}
if (priv->settings_connection > 0)
{
g_signal_handler_disconnect (priv->settings, priv->settings_connection);
priv->settings_connection = 0;
}
g_clear_object (&priv->settings);
G_OBJECT_CLASS (gtk_toolbar_parent_class)->dispose (object);
}
static void
gtk_toolbar_finalize (GObject *object)
{
GtkToolbar *toolbar = GTK_TOOLBAR (object);
GtkToolbarPrivate *priv = toolbar->priv;
g_list_free_full (priv->content, (GDestroyNotify)toolbar_content_free);
g_timer_destroy (priv->timer);
if (priv->idle_id)
g_source_remove (priv->idle_id);
g_clear_object (&priv->gadget);
g_clear_object (&priv->click_gesture);
G_OBJECT_CLASS (gtk_toolbar_parent_class)->finalize (object);
}
/**
* gtk_toolbar_set_icon_size:
* @toolbar: A #GtkToolbar
* @icon_size: The #GtkIconSize that stock icons in the toolbar shall have.
*
* This function sets the size of stock icons in the toolbar. You
* can call it both before you add the icons and after they’ve been
* added. The size you set will override user preferences for the default
* icon size.
*
* This should only be used for special-purpose toolbars, normal
* application toolbars should respect the user preferences for the
* size of icons.
**/
void
gtk_toolbar_set_icon_size (GtkToolbar *toolbar,
GtkIconSize icon_size)
{
GtkToolbarPrivate *priv;
g_return_if_fail (GTK_IS_TOOLBAR (toolbar));
g_return_if_fail (icon_size != GTK_ICON_SIZE_INVALID);
priv = toolbar->priv;
if (!priv->icon_size_set)
{
priv->icon_size_set = TRUE;
g_object_notify (G_OBJECT (toolbar), "icon-size-set");
}
if (priv->icon_size == icon_size)
return;
priv->icon_size = icon_size;
g_object_notify (G_OBJECT (toolbar), "icon-size");
gtk_toolbar_reconfigured (toolbar);
gtk_widget_queue_resize (GTK_WIDGET (toolbar));
}
/**
* gtk_toolbar_unset_icon_size:
* @toolbar: a #GtkToolbar
*
* Unsets toolbar icon size set with gtk_toolbar_set_icon_size(), so that
* user preferences will be used to determine the icon size.
**/
void
gtk_toolbar_unset_icon_size (GtkToolbar *toolbar)
{
GtkToolbarPrivate *priv;
GtkIconSize size;
g_return_if_fail (GTK_IS_TOOLBAR (toolbar));
priv = toolbar->priv;
if (priv->icon_size_set)
{
size = DEFAULT_ICON_SIZE;
if (size != priv->icon_size)
{
gtk_toolbar_set_icon_size (toolbar, size);
g_object_notify (G_OBJECT (toolbar), "icon-size");
}
priv->icon_size_set = FALSE;
g_object_notify (G_OBJECT (toolbar), "icon-size-set");
}
}
/*
* ToolbarContent methods
*/
typedef enum {
UNKNOWN,
YES,
NO
} TriState;
struct _ToolbarContent
{
ItemState state;
GtkToolItem *item;
GtkAllocation allocation;
GtkAllocation start_allocation;
GtkAllocation goal_allocation;
guint is_placeholder : 1;
guint disappearing : 1;
guint has_menu : 2;
};
static ToolbarContent *
toolbar_content_new_tool_item (GtkToolbar *toolbar,
GtkToolItem *item,
gboolean is_placeholder,
gint pos)
{
GtkToolbarPrivate *priv = toolbar->priv;
ToolbarContent *content, *previous;
content = g_slice_new0 (ToolbarContent);
content->state = NOT_ALLOCATED;
content->item = item;
content->is_placeholder = is_placeholder;
previous = pos > 0 ? g_list_nth_data (priv->content, -1) : NULL;
priv->content = g_list_insert (priv->content, content, pos);
if (gtk_widget_get_direction (GTK_WIDGET (toolbar)) == GTK_TEXT_DIR_RTL)
gtk_css_node_insert_after (gtk_widget_get_css_node (GTK_WIDGET (toolbar)),
gtk_widget_get_css_node (GTK_WIDGET (item)),
previous ? gtk_widget_get_css_node (GTK_WIDGET (previous->item)) : NULL);
else
gtk_css_node_insert_before (gtk_widget_get_css_node (GTK_WIDGET (toolbar)),
gtk_widget_get_css_node (GTK_WIDGET (item)),
previous ? gtk_widget_get_css_node (GTK_WIDGET (previous->item)) : NULL);
gtk_widget_set_parent (GTK_WIDGET (item), GTK_WIDGET (toolbar));
if (!is_placeholder)
{
priv->num_children++;
gtk_toolbar_stop_sliding (toolbar);
}
gtk_widget_queue_resize (GTK_WIDGET (toolbar));
priv->need_rebuild = TRUE;
return content;
}
static void
toolbar_content_remove (ToolbarContent *content,
GtkToolbar *toolbar)
{
GtkToolbarPrivate *priv = toolbar->priv;
gtk_widget_unparent (GTK_WIDGET (content->item));
priv->content = g_list_remove (priv->content, content);
if (!toolbar_content_is_placeholder (content))
priv->num_children--;
gtk_widget_queue_resize (GTK_WIDGET (toolbar));
priv->need_rebuild = TRUE;
}
static void
toolbar_content_free (ToolbarContent *content)
{
g_slice_free (ToolbarContent, content);
}
static gint
calculate_max_homogeneous_pixels (GtkWidget *widget)
{
PangoContext *context;
PangoFontMetrics *metrics;
gint char_width;
context = gtk_widget_get_pango_context (widget);
metrics = pango_context_get_metrics (context,
pango_context_get_font_description (context),
pango_context_get_language (context));
char_width = pango_font_metrics_get_approximate_char_width (metrics);
pango_font_metrics_unref (metrics);
return PANGO_PIXELS (MAX_HOMOGENEOUS_N_CHARS * char_width);
}
static void
toolbar_content_draw (ToolbarContent *content,
GtkContainer *container,
cairo_t *cr)
{
GtkWidget *widget;
if (content->is_placeholder)
return;
widget = GTK_WIDGET (content->item);
if (widget)
gtk_container_propagate_draw (container, widget, cr);
}
static gboolean
toolbar_content_visible (ToolbarContent *content,
GtkToolbar *toolbar)
{
GtkToolbarPrivate *priv = toolbar->priv;
GtkToolItem *item;
item = content->item;
if (!gtk_widget_get_visible (GTK_WIDGET (item)))
return FALSE;
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL &&
gtk_tool_item_get_visible_horizontal (item))
return TRUE;
if (priv->orientation == GTK_ORIENTATION_VERTICAL &&
gtk_tool_item_get_visible_vertical (item))
return TRUE;
return FALSE;
}
static void
toolbar_content_size_request (ToolbarContent *content,
GtkToolbar *toolbar,
GtkRequisition *requisition)
{
gtk_widget_get_preferred_size (GTK_WIDGET (content->item),
requisition, NULL);
if (content->is_placeholder &&
content->disappearing)
{
requisition->width = 0;
requisition->height = 0;
}
}
static gboolean
toolbar_content_is_homogeneous (ToolbarContent *content,
GtkToolbar *toolbar)
{
GtkToolbarPrivate *priv = toolbar->priv;
GtkRequisition requisition;
gboolean result;
if (priv->max_homogeneous_pixels < 0)
{
priv->max_homogeneous_pixels =
calculate_max_homogeneous_pixels (GTK_WIDGET (toolbar));
}
toolbar_content_size_request (content, toolbar, &requisition);
if (requisition.width > priv->max_homogeneous_pixels)
return FALSE;
result = gtk_tool_item_get_homogeneous (content->item) &&
!GTK_IS_SEPARATOR_TOOL_ITEM (content->item);
if (gtk_tool_item_get_is_important (content->item) &&
priv->style == GTK_TOOLBAR_BOTH_HORIZ &&
priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
result = FALSE;
}
return result;
}
static gboolean
toolbar_content_is_placeholder (ToolbarContent *content)
{
if (content->is_placeholder)
return TRUE;
return FALSE;
}
static gboolean
toolbar_content_disappearing (ToolbarContent *content)
{
if (content->disappearing)
return TRUE;
return FALSE;
}
static ItemState
toolbar_content_get_state (ToolbarContent *content)
{
return content->state;
}
static gboolean
toolbar_content_child_visible (ToolbarContent *content)
{
return gtk_widget_get_child_visible (GTK_WIDGET (content->item));
}
static void
toolbar_content_get_goal_allocation (ToolbarContent *content,
GtkAllocation *allocation)
{
*allocation = content->goal_allocation;
}
static void
toolbar_content_get_allocation (ToolbarContent *content,
GtkAllocation *allocation)
{
*allocation = content->allocation;
}
static void
toolbar_content_set_start_allocation (ToolbarContent *content,
GtkAllocation *allocation)
{
content->start_allocation = *allocation;
}
static gboolean
toolbar_content_get_expand (ToolbarContent *content)
{
if (!content->disappearing &&
gtk_tool_item_get_expand (content->item))
return TRUE;
return FALSE;
}
static void
toolbar_content_set_goal_allocation (ToolbarContent *content,
GtkAllocation *allocation)
{
content->goal_allocation = *allocation;
}
static void
toolbar_content_set_child_visible (ToolbarContent *content,
GtkToolbar *toolbar,
gboolean visible)
{
gtk_widget_set_child_visible (GTK_WIDGET (content->item),
visible);
}
static void
toolbar_content_get_start_allocation (ToolbarContent *content,
GtkAllocation *start_allocation)
{
*start_allocation = content->start_allocation;
}
static void
toolbar_content_size_allocate (ToolbarContent *content,
GtkAllocation *allocation)
{
content->allocation = *allocation;
gtk_widget_size_allocate (GTK_WIDGET (content->item),
allocation);
}
static void
toolbar_content_set_state (ToolbarContent *content,
ItemState state)
{
content->state = state;
}
static GtkWidget *
toolbar_content_get_widget (ToolbarContent *content)
{
return GTK_WIDGET (content->item);
}
static void
toolbar_content_set_disappearing (ToolbarContent *content,
gboolean disappearing)
{
content->disappearing = disappearing;
}
static void
toolbar_content_set_size_request (ToolbarContent *content,
gint width,
gint height)
{
gtk_widget_set_size_request (GTK_WIDGET (content->item),
width, height);
}
static void
toolbar_content_toolbar_reconfigured (ToolbarContent *content,
GtkToolbar *toolbar)
{
gtk_tool_item_toolbar_reconfigured (content->item);
}
static GtkWidget *
toolbar_content_retrieve_menu_item (ToolbarContent *content)
{
return gtk_tool_item_retrieve_proxy_menu_item (content->item);
}
static gboolean
toolbar_content_has_proxy_menu_item (ToolbarContent *content)
{
GtkWidget *menu_item;
if (content->has_menu == YES)
return TRUE;
else if (content->has_menu == NO)
return FALSE;
menu_item = toolbar_content_retrieve_menu_item (content);
content->has_menu = menu_item? YES : NO;
return menu_item != NULL;
}
static void
toolbar_content_set_unknown_menu_status (ToolbarContent *content)
{
content->has_menu = UNKNOWN;
}
static gboolean
toolbar_content_is_separator (ToolbarContent *content)
{
return GTK_IS_SEPARATOR_TOOL_ITEM (content->item);
}
static void
toolbar_content_set_expand (ToolbarContent *content,
gboolean expand)
{
gtk_tool_item_set_expand (content->item, expand);
}
static void
toolbar_content_show_all (ToolbarContent *content)
{
GtkWidget *widget;
widget = toolbar_content_get_widget (content);
if (widget)
gtk_widget_show_all (widget);
}
/* GTK+ internal methods */
gchar *
_gtk_toolbar_elide_underscores (const gchar *original)
{
gchar *q, *result;
const gchar *p, *end;
gsize len;
gboolean last_underscore;
if (!original)
return NULL;
len = strlen (original);
q = result = g_malloc (len + 1);
last_underscore = FALSE;
end = original + len;
for (p = original; p < end; p++)
{
if (!last_underscore && *p == '_')
last_underscore = TRUE;
else
{
last_underscore = FALSE;
if (original + 2 <= p && p + 1 <= end &&
p[-2] == '(' && p[-1] == '_' && p[0] != '_' && p[1] == ')')
{
q--;
*q = '\0';
p++;
}
else
*q++ = *p;
}
}
if (last_underscore)
*q++ = '_';
*q = '\0';
return result;
}
static GtkIconSize
toolbar_get_icon_size (GtkToolShell *shell)
{
GtkToolbar *toolbar = GTK_TOOLBAR (shell);
GtkToolbarPrivate *priv = toolbar->priv;
return priv->icon_size;
}
static GtkOrientation
toolbar_get_orientation (GtkToolShell *shell)
{
GtkToolbar *toolbar = GTK_TOOLBAR (shell);
GtkToolbarPrivate *priv = toolbar->priv;
return priv->orientation;
}
static GtkToolbarStyle
toolbar_get_style (GtkToolShell *shell)
{
GtkToolbar *toolbar = GTK_TOOLBAR (shell);
GtkToolbarPrivate *priv = toolbar->priv;
return priv->style;
}
static void
toolbar_rebuild_menu (GtkToolShell *shell)
{
GtkToolbar *toolbar = GTK_TOOLBAR (shell);
GtkToolbarPrivate *priv = toolbar->priv;
GList *list;
priv->need_rebuild = TRUE;
for (list = priv->content; list != NULL; list = list->next)
{
ToolbarContent *content = list->data;
toolbar_content_set_unknown_menu_status (content);
}
gtk_widget_queue_resize (GTK_WIDGET (shell));
}
static void
gtk_toolbar_direction_changed (GtkWidget *widget,
GtkTextDirection previous_direction)
{
GTK_WIDGET_CLASS (gtk_toolbar_parent_class)->direction_changed (widget, previous_direction);
gtk_css_node_reverse_children (gtk_widget_get_css_node (widget));
}
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