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gtk2/gtk/gtkmenu.c
Jonas Ådahl 4497ac7d75 menu: Remove legacy popup APIs 
Remove gtk_menu_popup_for_device() and gtk_menu_popup(), as they cannot
be implemented in a portable manner by all backends. They have been
deprecated for proper alternative APIs for some time, so lets remove
them now before its too late.

While at it, fix the example documentation for mapping a menu.
2018-07-27 17:16:44 +02:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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/.
*/
/**
* SECTION:gtkmenu
* @Short_description: A menu widget
* @Title: GtkMenu
*
* A #GtkMenu is a #GtkMenuShell that implements a drop down menu
* consisting of a list of #GtkMenuItem objects which can be navigated
* and activated by the user to perform application functions.
*
* A #GtkMenu is most commonly dropped down by activating a
* #GtkMenuItem in a #GtkMenuBar or popped up by activating a
* #GtkMenuItem in another #GtkMenu.
*
* A #GtkMenu can also be popped up by activating a #GtkComboBox.
* Other composite widgets such as the #GtkNotebook can pop up a
* #GtkMenu as well.
*
* Applications can display a #GtkMenu as a popup menu by calling one of the
* gtk_menu_popup_*() function. The example below shows how an application can
* pop up a menu when the 3rd mouse button is pressed.
*
* ## Connecting the popup signal handler.
*
* |[<!-- language="C" -->
* // connect our handler which will popup the menu
* gesture = gtk_gesture_multi_press_new (window);
* gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture),
* GDK_BUTTON_SECONDARY);
* g_signal_connect (gesture, "begin", G_CALLBACK (my_popup_handler), menu);
* ]|
*
* ## Signal handler which displays a popup menu.
*
* |[<!-- language="C" -->
* static void
* my_popup_handler (GtkGesture *gesture,
* GdkEventSequence *sequence
* gpointer data)
* {
* GtkMenu *menu = data;
* const GdkEvent *event;
*
* event = gtk_gesture_get_last_event (gesture, sequence);
* gtk_menu_popup_at_pointer (menu, event);
* }
* ]|
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* menu
* ├── arrow.top
* ├── <child>
* ┊
* ├── <child>
* ╰── arrow.bottom
* ]|
*
* The main CSS node of GtkMenu has name menu, and there are two subnodes
* with name arrow, for scrolling menu arrows. These subnodes get the
* .top and .bottom style classes.
*/
#include "config.h"
#include "gtkmenuprivate.h"
#include "gtkaccellabel.h"
#include "gtkaccelmap.h"
#include "gtkadjustment.h"
#include "gtkbindings.h"
#include "gtkbox.h"
#include "gtkcheckmenuitemprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtkcssstylepropertyprivate.h"
#include "gtkdnd.h"
#include "gtkeventcontrollerscroll.h"
#include "gtkiconprivate.h"
#include "gtkintl.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkmenuitemprivate.h"
#include "gtkmenushellprivate.h"
#include "gtkprivate.h"
#include "gtkscrollbar.h"
#include "gtksettings.h"
#include "gtksnapshot.h"
#include "gtkstylecontextprivate.h"
#include "gtktypebuiltins.h"
#include "gtkwidgetpath.h"
#include "gtkwidgetprivate.h"
#include "gtkwindowgroup.h"
#include "gtkwindowprivate.h"
#include "gtkeventcontrollerkey.h"
#include "a11y/gtkmenuaccessible.h"
#include "gdk/gdk-private.h"
#include <gobject/gvaluecollector.h>
#include <string.h>
#define NAVIGATION_REGION_OVERSHOOT 50 /* How much the navigation region
* extends below the submenu
*/
#define MENU_SCROLL_STEP1 8
#define MENU_SCROLL_STEP2 15
#define MENU_SCROLL_FAST_ZONE 8
#define MENU_SCROLL_TIMEOUT1 50
#define MENU_SCROLL_TIMEOUT2 20
#define MENU_POPUP_DELAY 225
#define ATTACH_INFO_KEY "gtk-menu-child-attach-info-key"
#define ATTACHED_MENUS "gtk-attached-menus"
typedef struct _GtkMenuAttachData GtkMenuAttachData;
typedef struct _GtkMenuPopdownData GtkMenuPopdownData;
struct _GtkMenuAttachData
{
GtkWidget *attach_widget;
GtkMenuDetachFunc detacher;
};
struct _GtkMenuPopdownData
{
GtkMenu *menu;
GdkDevice *device;
};
typedef struct
{
gint left_attach;
gint right_attach;
gint top_attach;
gint bottom_attach;
gint effective_left_attach;
gint effective_right_attach;
gint effective_top_attach;
gint effective_bottom_attach;
} AttachInfo;
enum {
MOVE_SCROLL,
POPPED_UP,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_ACTIVE,
PROP_ACCEL_GROUP,
PROP_ACCEL_PATH,
PROP_ATTACH_WIDGET,
PROP_TEAROFF_STATE,
PROP_TEAROFF_TITLE,
PROP_MONITOR,
PROP_RESERVE_TOGGLE_SIZE,
PROP_ANCHOR_HINTS,
PROP_RECT_ANCHOR_DX,
PROP_RECT_ANCHOR_DY,
PROP_MENU_TYPE_HINT
};
enum {
CHILD_PROP_0,
CHILD_PROP_LEFT_ATTACH,
CHILD_PROP_RIGHT_ATTACH,
CHILD_PROP_TOP_ATTACH,
CHILD_PROP_BOTTOM_ATTACH
};
static void gtk_menu_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_menu_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_menu_finalize (GObject *object);
static void gtk_menu_set_child_property(GtkContainer *container,
GtkWidget *child,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_menu_get_child_property(GtkContainer *container,
GtkWidget *child,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gtk_menu_destroy (GtkWidget *widget);
static void gtk_menu_realize (GtkWidget *widget);
static void gtk_menu_unrealize (GtkWidget *widget);
static void gtk_menu_size_allocate (GtkWidget *widget,
const GtkAllocation *allocation,
int baseline);
static void gtk_menu_show (GtkWidget *widget);
static void gtk_menu_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot);
static void gtk_menu_motion (GtkEventController *controller,
double x,
double y,
gpointer user_data);
static void gtk_menu_enter (GtkEventController *controller,
double x,
double y,
gpointer user_data);
static void gtk_menu_leave (GtkEventController *controller,
gpointer user_data);
static gboolean gtk_menu_key_pressed (GtkEventControllerKey *controller,
guint keyval,
guint keycode,
GdkModifierType state,
GtkMenu *menu);
static void gtk_menu_scroll_to (GtkMenu *menu,
gint offset);
static void gtk_menu_grab_notify (GtkWidget *widget,
gboolean was_grabbed);
static gboolean gtk_menu_captured_event (GtkWidget *widget,
GdkEvent *event);
static void gtk_menu_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
GtkMenu *menu);
static void gtk_menu_stop_scrolling (GtkMenu *menu);
static void gtk_menu_remove_scroll_timeout (GtkMenu *menu);
static gboolean gtk_menu_scroll_timeout (gpointer data);
static void gtk_menu_scroll_item_visible (GtkMenuShell *menu_shell,
GtkWidget *menu_item);
static void gtk_menu_select_item (GtkMenuShell *menu_shell,
GtkWidget *menu_item);
static void gtk_menu_real_insert (GtkMenuShell *menu_shell,
GtkWidget *child,
gint position);
static void gtk_menu_handle_scrolling (GtkMenu *menu,
gint event_x,
gint event_y,
gboolean enter,
gboolean motion);
static gboolean gtk_menu_focus (GtkWidget *widget,
GtkDirectionType direction);
static gint gtk_menu_get_popup_delay (GtkMenuShell *menu_shell);
static void gtk_menu_move_current (GtkMenuShell *menu_shell,
GtkMenuDirectionType direction);
static void gtk_menu_real_move_scroll (GtkMenu *menu,
GtkScrollType type);
static void gtk_menu_stop_navigating_submenu (GtkMenu *menu);
static gboolean gtk_menu_navigating_submenu (GtkMenu *menu,
gint event_x,
gint event_y);
static void gtk_menu_deactivate (GtkMenuShell *menu_shell);
static void gtk_menu_position (GtkMenu *menu,
gboolean set_scroll_offset);
static void gtk_menu_remove (GtkContainer *menu,
GtkWidget *widget);
static void menu_grab_transfer_surface_destroy (GtkMenu *menu);
static GdkSurface *menu_grab_transfer_surface_get (GtkMenu *menu);
static gboolean gtk_menu_real_can_activate_accel (GtkWidget *widget,
guint signal_id);
static void _gtk_menu_refresh_accel_paths (GtkMenu *menu,
gboolean group_changed);
static void gtk_menu_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline);
static void gtk_menu_pressed_cb (GtkGestureMultiPress *gesture,
int n_press,
double x,
double y,
gpointer user_data);
static void gtk_menu_released_cb (GtkGestureMultiPress *gesture,
int n_press,
double x,
double y,
gpointer user_data);
static const gchar attach_data_key[] = "gtk-menu-attach-data";
static guint menu_signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE_WITH_PRIVATE (GtkMenu, gtk_menu, GTK_TYPE_MENU_SHELL)
static void
menu_queue_resize (GtkMenu *menu)
{
GtkMenuPrivate *priv = menu->priv;
priv->have_layout = FALSE;
gtk_widget_queue_resize (GTK_WIDGET (menu));
}
static void
attach_info_free (AttachInfo *info)
{
g_slice_free (AttachInfo, info);
}
static AttachInfo *
get_attach_info (GtkWidget *child)
{
GObject *object = G_OBJECT (child);
AttachInfo *ai = g_object_get_data (object, ATTACH_INFO_KEY);
if (!ai)
{
ai = g_slice_new0 (AttachInfo);
g_object_set_data_full (object, I_(ATTACH_INFO_KEY), ai,
(GDestroyNotify) attach_info_free);
}
return ai;
}
static gboolean
is_grid_attached (AttachInfo *ai)
{
return (ai->left_attach >= 0 &&
ai->right_attach >= 0 &&
ai->top_attach >= 0 &&
ai->bottom_attach >= 0);
}
static void
menu_ensure_layout (GtkMenu *menu)
{
GtkMenuPrivate *priv = menu->priv;
if (!priv->have_layout)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (menu);
GList *l;
gchar *row_occupied;
gint current_row;
gint max_right_attach;
gint max_bottom_attach;
/* Find extents of gridded portion
*/
max_right_attach = 1;
max_bottom_attach = 0;
for (l = menu_shell->priv->children; l; l = l->next)
{
GtkWidget *child = l->data;
AttachInfo *ai = get_attach_info (child);
if (is_grid_attached (ai))
{
max_bottom_attach = MAX (max_bottom_attach, ai->bottom_attach);
max_right_attach = MAX (max_right_attach, ai->right_attach);
}
}
/* Find empty rows */
row_occupied = g_malloc0 (max_bottom_attach);
for (l = menu_shell->priv->children; l; l = l->next)
{
GtkWidget *child = l->data;
AttachInfo *ai = get_attach_info (child);
if (is_grid_attached (ai))
{
gint i;
for (i = ai->top_attach; i < ai->bottom_attach; i++)
row_occupied[i] = TRUE;
}
}
/* Lay non-grid-items out in those rows
*/
current_row = 0;
for (l = menu_shell->priv->children; l; l = l->next)
{
GtkWidget *child = l->data;
AttachInfo *ai = get_attach_info (child);
if (!is_grid_attached (ai))
{
while (current_row < max_bottom_attach && row_occupied[current_row])
current_row++;
ai->effective_left_attach = 0;
ai->effective_right_attach = max_right_attach;
ai->effective_top_attach = current_row;
ai->effective_bottom_attach = current_row + 1;
current_row++;
}
else
{
ai->effective_left_attach = ai->left_attach;
ai->effective_right_attach = ai->right_attach;
ai->effective_top_attach = ai->top_attach;
ai->effective_bottom_attach = ai->bottom_attach;
}
}
g_free (row_occupied);
priv->n_rows = MAX (current_row, max_bottom_attach);
priv->n_columns = max_right_attach;
priv->have_layout = TRUE;
}
}
static gint
gtk_menu_get_n_columns (GtkMenu *menu)
{
GtkMenuPrivate *priv = menu->priv;
menu_ensure_layout (menu);
return priv->n_columns;
}
static gint
gtk_menu_get_n_rows (GtkMenu *menu)
{
GtkMenuPrivate *priv = menu->priv;
menu_ensure_layout (menu);
return priv->n_rows;
}
static void
get_effective_child_attach (GtkWidget *child,
int *l,
int *r,
int *t,
int *b)
{
GtkMenu *menu = GTK_MENU (gtk_widget_get_parent (child));
AttachInfo *ai;
menu_ensure_layout (menu);
ai = get_attach_info (child);
if (l)
*l = ai->effective_left_attach;
if (r)
*r = ai->effective_right_attach;
if (t)
*t = ai->effective_top_attach;
if (b)
*b = ai->effective_bottom_attach;
}
static void
gtk_menu_class_init (GtkMenuClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class);
GtkMenuShellClass *menu_shell_class = GTK_MENU_SHELL_CLASS (class);
GtkBindingSet *binding_set;
gobject_class->set_property = gtk_menu_set_property;
gobject_class->get_property = gtk_menu_get_property;
gobject_class->finalize = gtk_menu_finalize;
widget_class->destroy = gtk_menu_destroy;
widget_class->realize = gtk_menu_realize;
widget_class->unrealize = gtk_menu_unrealize;
widget_class->size_allocate = gtk_menu_size_allocate;
widget_class->show = gtk_menu_show;
widget_class->snapshot = gtk_menu_snapshot;
widget_class->focus = gtk_menu_focus;
widget_class->can_activate_accel = gtk_menu_real_can_activate_accel;
widget_class->grab_notify = gtk_menu_grab_notify;
widget_class->measure = gtk_menu_measure;
container_class->remove = gtk_menu_remove;
container_class->get_child_property = gtk_menu_get_child_property;
container_class->set_child_property = gtk_menu_set_child_property;
menu_shell_class->submenu_placement = GTK_LEFT_RIGHT;
menu_shell_class->deactivate = gtk_menu_deactivate;
menu_shell_class->select_item = gtk_menu_select_item;
menu_shell_class->insert = gtk_menu_real_insert;
menu_shell_class->get_popup_delay = gtk_menu_get_popup_delay;
menu_shell_class->move_current = gtk_menu_move_current;
/**
* GtkMenu::move-scroll:
* @menu: a #GtkMenu
* @scroll_type: a #GtkScrollType
*/
menu_signals[MOVE_SCROLL] =
g_signal_new_class_handler (I_("move-scroll"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gtk_menu_real_move_scroll),
NULL, NULL,
NULL,
G_TYPE_NONE, 1,
GTK_TYPE_SCROLL_TYPE);
/**
* GtkMenu::popped-up:
* @menu: the #GtkMenu that popped up
* @flipped_rect: (nullable): the position of @menu after any possible
* flipping or %NULL if the backend can't obtain it
* @final_rect: (nullable): the final position of @menu or %NULL if the
* backend can't obtain it
* @flipped_x: %TRUE if the anchors were flipped horizontally
* @flipped_y: %TRUE if the anchors were flipped vertically
*
* Emitted when the position of @menu is finalized after being popped up
* using gtk_menu_popup_at_rect (), gtk_menu_popup_at_widget (), or
* gtk_menu_popup_at_pointer ().
*
* @menu might be flipped over the anchor rectangle in order to keep it
* on-screen, in which case @flipped_x and @flipped_y will be set to %TRUE
* accordingly.
*
* @flipped_rect is the ideal position of @menu after any possible flipping,
* but before any possible sliding. @final_rect is @flipped_rect, but possibly
* translated in the case that flipping is still ineffective in keeping @menu
* on-screen.
*
* ![](popup-slide.png)
*
* The blue menu is @menu's ideal position, the green menu is @flipped_rect,
* and the red menu is @final_rect.
*
* See gtk_menu_popup_at_rect (), gtk_menu_popup_at_widget (),
* gtk_menu_popup_at_pointer (), #GtkMenu:anchor-hints,
* #GtkMenu:rect-anchor-dx, #GtkMenu:rect-anchor-dy, and
* #GtkMenu:menu-type-hint.
*/
menu_signals[POPPED_UP] =
g_signal_new_class_handler (I_("popped-up"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_FIRST,
NULL,
NULL,
NULL,
_gtk_marshal_VOID__POINTER_POINTER_BOOLEAN_BOOLEAN,
G_TYPE_NONE,
4,
G_TYPE_POINTER,
G_TYPE_POINTER,
G_TYPE_BOOLEAN,
G_TYPE_BOOLEAN);
/**
* GtkMenu:active:
*
* The index of the currently selected menu item, or -1 if no
* menu item is selected.
**/
g_object_class_install_property (gobject_class,
PROP_ACTIVE,
g_param_spec_int ("active",
P_("Active"),
P_("The currently selected menu item"),
-1, G_MAXINT, -1,
GTK_PARAM_READWRITE));
/**
* GtkMenu:accel-group:
*
* The accel group holding accelerators for the menu.
**/
g_object_class_install_property (gobject_class,
PROP_ACCEL_GROUP,
g_param_spec_object ("accel-group",
P_("Accel Group"),
P_("The accel group holding accelerators for the menu"),
GTK_TYPE_ACCEL_GROUP,
GTK_PARAM_READWRITE));
/**
* GtkMenu:accel-path:
*
* An accel path used to conveniently construct accel paths of child items.
**/
g_object_class_install_property (gobject_class,
PROP_ACCEL_PATH,
g_param_spec_string ("accel-path",
P_("Accel Path"),
P_("An accel path used to conveniently construct accel paths of child items"),
NULL,
GTK_PARAM_READWRITE));
/**
* GtkMenu:attach-widget:
*
* The widget the menu is attached to. Setting this property attaches
* the menu without a #GtkMenuDetachFunc. If you need to use a detacher,
* use gtk_menu_attach_to_widget() directly.
**/
g_object_class_install_property (gobject_class,
PROP_ATTACH_WIDGET,
g_param_spec_object ("attach-widget",
P_("Attach Widget"),
P_("The widget the menu is attached to"),
GTK_TYPE_WIDGET,
GTK_PARAM_READWRITE));
/**
* GtkMenu:monitor:
*
* The monitor the menu will be popped up on.
**/
g_object_class_install_property (gobject_class,
PROP_MONITOR,
g_param_spec_int ("monitor",
P_("Monitor"),
P_("The monitor the menu will be popped up on"),
-1, G_MAXINT, -1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkMenu:reserve-toggle-size:
*
* A boolean that indicates whether the menu reserves space for
* toggles and icons, regardless of their actual presence.
*
* This property should only be changed from its default value
* for special-purposes such as tabular menus. Regular menus that
* are connected to a menu bar or context menus should reserve
* toggle space for consistency.
*/
g_object_class_install_property (gobject_class,
PROP_RESERVE_TOGGLE_SIZE,
g_param_spec_boolean ("reserve-toggle-size",
P_("Reserve Toggle Size"),
P_("A boolean that indicates whether the menu reserves space for toggles and icons"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkMenu:anchor-hints:
*
* Positioning hints for aligning the menu relative to a rectangle.
*
* These hints determine how the menu should be positioned in the case that
* the menu would fall off-screen if placed in its ideal position.
*
* ![](popup-flip.png)
*
* For example, %GDK_ANCHOR_FLIP_Y will replace %GDK_GRAVITY_NORTH_WEST with
* %GDK_GRAVITY_SOUTH_WEST and vice versa if the menu extends beyond the
* bottom edge of the monitor.
*
* See gtk_menu_popup_at_rect (), gtk_menu_popup_at_widget (),
* gtk_menu_popup_at_pointer (), #GtkMenu:rect-anchor-dx,
* #GtkMenu:rect-anchor-dy, #GtkMenu:menu-type-hint, and #GtkMenu::popped-up.
*/
g_object_class_install_property (gobject_class,
PROP_ANCHOR_HINTS,
g_param_spec_flags ("anchor-hints",
P_("Anchor hints"),
P_("Positioning hints for when the menu might fall off-screen"),
GDK_TYPE_ANCHOR_HINTS,
GDK_ANCHOR_FLIP |
GDK_ANCHOR_SLIDE |
GDK_ANCHOR_RESIZE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT |
G_PARAM_STATIC_NAME |
G_PARAM_STATIC_NICK |
G_PARAM_STATIC_BLURB |
G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkMenu:rect-anchor-dx:
*
* Horizontal offset to apply to the menu, i.e. the rectangle or widget
* anchor.
*
* See gtk_menu_popup_at_rect (), gtk_menu_popup_at_widget (),
* gtk_menu_popup_at_pointer (), #GtkMenu:anchor-hints,
* #GtkMenu:rect-anchor-dy, #GtkMenu:menu-type-hint, and #GtkMenu::popped-up.
*/
g_object_class_install_property (gobject_class,
PROP_RECT_ANCHOR_DX,
g_param_spec_int ("rect-anchor-dx",
P_("Rect anchor dx"),
P_("Rect anchor horizontal offset"),
G_MININT,
G_MAXINT,
0,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT |
G_PARAM_STATIC_NAME |
G_PARAM_STATIC_NICK |
G_PARAM_STATIC_BLURB |
G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkMenu:rect-anchor-dy:
*
* Vertical offset to apply to the menu, i.e. the rectangle or widget anchor.
*
* See gtk_menu_popup_at_rect (), gtk_menu_popup_at_widget (),
* gtk_menu_popup_at_pointer (), #GtkMenu:anchor-hints,
* #GtkMenu:rect-anchor-dx, #GtkMenu:menu-type-hint, and #GtkMenu::popped-up.
*/
g_object_class_install_property (gobject_class,
PROP_RECT_ANCHOR_DY,
g_param_spec_int ("rect-anchor-dy",
P_("Rect anchor dy"),
P_("Rect anchor vertical offset"),
G_MININT,
G_MAXINT,
0,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT |
G_PARAM_STATIC_NAME |
G_PARAM_STATIC_NICK |
G_PARAM_STATIC_BLURB |
G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkMenu:menu-type-hint:
*
* The #GdkSurfaceTypeHint to use for the menu's #GdkSurface.
*
* See gtk_menu_popup_at_rect (), gtk_menu_popup_at_widget (),
* gtk_menu_popup_at_pointer (), #GtkMenu:anchor-hints,
* #GtkMenu:rect-anchor-dx, #GtkMenu:rect-anchor-dy, and #GtkMenu::popped-up.
*/
g_object_class_install_property (gobject_class,
PROP_MENU_TYPE_HINT,
g_param_spec_enum ("menu-type-hint",
P_("Menu type hint"),
P_("Menu window type hint"),
GDK_TYPE_SURFACE_TYPE_HINT,
GDK_SURFACE_TYPE_HINT_POPUP_MENU,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT |
G_PARAM_STATIC_NAME |
G_PARAM_STATIC_NICK |
G_PARAM_STATIC_BLURB |
G_PARAM_EXPLICIT_NOTIFY));
gtk_container_class_install_child_property (container_class,
CHILD_PROP_LEFT_ATTACH,
g_param_spec_int ("left-attach",
P_("Left Attach"),
P_("The column number to attach the left side of the child to"),
-1, INT_MAX, -1,
GTK_PARAM_READWRITE));
gtk_container_class_install_child_property (container_class,
CHILD_PROP_RIGHT_ATTACH,
g_param_spec_int ("right-attach",
P_("Right Attach"),
P_("The column number to attach the right side of the child to"),
-1, INT_MAX, -1,
GTK_PARAM_READWRITE));
gtk_container_class_install_child_property (container_class,
CHILD_PROP_TOP_ATTACH,
g_param_spec_int ("top-attach",
P_("Top Attach"),
P_("The row number to attach the top of the child to"),
-1, INT_MAX, -1,
GTK_PARAM_READWRITE));
gtk_container_class_install_child_property (container_class,
CHILD_PROP_BOTTOM_ATTACH,
g_param_spec_int ("bottom-attach",
P_("Bottom Attach"),
P_("The row number to attach the bottom of the child to"),
-1, INT_MAX, -1,
GTK_PARAM_READWRITE));
binding_set = gtk_binding_set_by_class (class);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Up, 0,
I_("move-current"), 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PREV);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Up, 0,
"move-current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PREV);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Down, 0,
"move-current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_NEXT);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Down, 0,
"move-current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_NEXT);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Left, 0,
"move-current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PARENT);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Left, 0,
"move-current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PARENT);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Right, 0,
"move-current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_CHILD);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Right, 0,
"move-current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_CHILD);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Home, 0,
"move-scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_START);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Home, 0,
"move-scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_START);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_End, 0,
"move-scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_END);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_End, 0,
"move-scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_END);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Page_Up, 0,
"move-scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_PAGE_UP);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Page_Up, 0,
"move-scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_PAGE_UP);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Page_Down, 0,
"move-scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_PAGE_DOWN);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Page_Down, 0,
"move-scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_PAGE_DOWN);
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_MENU_ACCESSIBLE);
gtk_widget_class_set_css_name (widget_class, I_("menu"));
}
static void
gtk_menu_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkMenu *menu = GTK_MENU (object);
switch (prop_id)
{
case PROP_ACTIVE:
gtk_menu_set_active (menu, g_value_get_int (value));
break;
case PROP_ACCEL_GROUP:
gtk_menu_set_accel_group (menu, g_value_get_object (value));
break;
case PROP_ACCEL_PATH:
gtk_menu_set_accel_path (menu, g_value_get_string (value));
break;
case PROP_ATTACH_WIDGET:
{
GtkWidget *widget;
widget = gtk_menu_get_attach_widget (menu);
if (widget)
gtk_menu_detach (menu);
widget = (GtkWidget*) g_value_get_object (value);
if (widget)
gtk_menu_attach_to_widget (menu, widget, NULL);
}
break;
case PROP_MONITOR:
gtk_menu_set_monitor (menu, g_value_get_int (value));
break;
case PROP_RESERVE_TOGGLE_SIZE:
gtk_menu_set_reserve_toggle_size (menu, g_value_get_boolean (value));
break;
case PROP_ANCHOR_HINTS:
if (menu->priv->anchor_hints != g_value_get_flags (value))
{
menu->priv->anchor_hints = g_value_get_flags (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_RECT_ANCHOR_DX:
if (menu->priv->rect_anchor_dx != g_value_get_int (value))
{
menu->priv->rect_anchor_dx = g_value_get_int (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_RECT_ANCHOR_DY:
if (menu->priv->rect_anchor_dy != g_value_get_int (value))
{
menu->priv->rect_anchor_dy = g_value_get_int (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_MENU_TYPE_HINT:
if (menu->priv->menu_type_hint != g_value_get_enum (value))
{
menu->priv->menu_type_hint = g_value_get_enum (value);
g_object_notify_by_pspec (object, pspec);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_menu_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkMenu *menu = GTK_MENU (object);
switch (prop_id)
{
case PROP_ACTIVE:
g_value_set_int (value, g_list_index (GTK_MENU_SHELL (menu)->priv->children, gtk_menu_get_active (menu)));
break;
case PROP_ACCEL_GROUP:
g_value_set_object (value, gtk_menu_get_accel_group (menu));
break;
case PROP_ACCEL_PATH:
g_value_set_string (value, gtk_menu_get_accel_path (menu));
break;
case PROP_ATTACH_WIDGET:
g_value_set_object (value, gtk_menu_get_attach_widget (menu));
break;
case PROP_MONITOR:
g_value_set_int (value, gtk_menu_get_monitor (menu));
break;
case PROP_RESERVE_TOGGLE_SIZE:
g_value_set_boolean (value, gtk_menu_get_reserve_toggle_size (menu));
break;
case PROP_ANCHOR_HINTS:
g_value_set_flags (value, menu->priv->anchor_hints);
break;
case PROP_RECT_ANCHOR_DX:
g_value_set_int (value, menu->priv->rect_anchor_dx);
break;
case PROP_RECT_ANCHOR_DY:
g_value_set_int (value, menu->priv->rect_anchor_dy);
break;
case PROP_MENU_TYPE_HINT:
g_value_set_enum (value, menu->priv->menu_type_hint);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_menu_set_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkMenu *menu = GTK_MENU (container);
AttachInfo *ai = get_attach_info (child);
switch (property_id)
{
case CHILD_PROP_LEFT_ATTACH:
ai->left_attach = g_value_get_int (value);
break;
case CHILD_PROP_RIGHT_ATTACH:
ai->right_attach = g_value_get_int (value);
break;
case CHILD_PROP_TOP_ATTACH:
ai->top_attach = g_value_get_int (value);
break;
case CHILD_PROP_BOTTOM_ATTACH:
ai->bottom_attach = g_value_get_int (value);
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
return;
}
menu_queue_resize (menu);
}
static void
gtk_menu_get_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
AttachInfo *ai = get_attach_info (child);
switch (property_id)
{
case CHILD_PROP_LEFT_ATTACH:
g_value_set_int (value, ai->left_attach);
break;
case CHILD_PROP_RIGHT_ATTACH:
g_value_set_int (value, ai->right_attach);
break;
case CHILD_PROP_TOP_ATTACH:
g_value_set_int (value, ai->top_attach);
break;
case CHILD_PROP_BOTTOM_ATTACH:
g_value_set_int (value, ai->bottom_attach);
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
return;
}
}
static void
gtk_menu_init (GtkMenu *menu)
{
GtkMenuPrivate *priv;
GtkGesture *gesture;
GtkEventController *controller;
priv = gtk_menu_get_instance_private (menu);
menu->priv = priv;
priv->toplevel = gtk_window_new (GTK_WINDOW_POPUP);
gtk_container_add (GTK_CONTAINER (priv->toplevel), GTK_WIDGET (menu));
g_signal_connect (priv->toplevel, "destroy", G_CALLBACK (gtk_widget_destroyed), &priv->toplevel);
gtk_window_set_resizable (GTK_WINDOW (priv->toplevel), FALSE);
gtk_window_set_mnemonic_modifier (GTK_WINDOW (priv->toplevel), 0);
_gtk_window_request_csd (GTK_WINDOW (priv->toplevel));
gtk_style_context_add_class (gtk_widget_get_style_context (priv->toplevel),
GTK_STYLE_CLASS_POPUP);
/* Refloat the menu, so that reference counting for the menu isn't
* affected by it being a child of the toplevel
*/
g_object_force_floating (G_OBJECT (menu));
priv->needs_destruction_ref = TRUE;
priv->monitor_num = -1;
priv->drag_start_y = -1;
priv->anchor_hints = GDK_ANCHOR_FLIP | GDK_ANCHOR_SLIDE | GDK_ANCHOR_RESIZE;
priv->rect_anchor_dx = 0;
priv->rect_anchor_dy = 0;
priv->menu_type_hint = GDK_SURFACE_TYPE_HINT_POPUP_MENU;
_gtk_widget_set_captured_event_handler (GTK_WIDGET (menu), gtk_menu_captured_event);
priv->top_arrow_widget = gtk_icon_new ("arrow");
gtk_style_context_add_class (gtk_widget_get_style_context (priv->top_arrow_widget),
GTK_STYLE_CLASS_TOP);
gtk_widget_set_parent (priv->top_arrow_widget, GTK_WIDGET (menu));
gtk_widget_hide (priv->top_arrow_widget);
priv->bottom_arrow_widget = gtk_icon_new ("arrow");
gtk_style_context_add_class (gtk_widget_get_style_context (priv->bottom_arrow_widget),
GTK_STYLE_CLASS_BOTTOM);
gtk_widget_set_parent (priv->bottom_arrow_widget, GTK_WIDGET (menu));
gtk_widget_hide (priv->bottom_arrow_widget);
gesture = gtk_gesture_multi_press_new ();
gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (gesture), FALSE);
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture), 0);
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture), GTK_PHASE_BUBBLE);
g_signal_connect (gesture, "pressed", G_CALLBACK (gtk_menu_pressed_cb), menu);
g_signal_connect (gesture, "released", G_CALLBACK (gtk_menu_released_cb), menu);
gtk_widget_add_controller (GTK_WIDGET (menu), GTK_EVENT_CONTROLLER (gesture));
controller = gtk_event_controller_scroll_new (GTK_EVENT_CONTROLLER_SCROLL_VERTICAL);
g_signal_connect (controller, "scroll",
G_CALLBACK (gtk_menu_scroll_controller_scroll), menu);
gtk_widget_add_controller (GTK_WIDGET (menu), controller);
controller = gtk_event_controller_motion_new ();
g_signal_connect (controller, "enter", G_CALLBACK (gtk_menu_enter), menu);
g_signal_connect (controller, "motion", G_CALLBACK (gtk_menu_motion), menu);
g_signal_connect (controller, "leave", G_CALLBACK (gtk_menu_leave), menu);
gtk_widget_add_controller (GTK_WIDGET (menu), controller);
controller = gtk_event_controller_key_new ();
g_signal_connect (controller, "key-pressed",
G_CALLBACK (gtk_menu_key_pressed), menu);
gtk_widget_add_controller (GTK_WIDGET (menu), controller);
}
static void
moved_to_rect_cb (GdkSurface *surface,
const GdkRectangle *flipped_rect,
const GdkRectangle *final_rect,
gboolean flipped_x,
gboolean flipped_y,
GtkMenu *menu)
{
g_signal_emit (menu,
menu_signals[POPPED_UP],
0,
flipped_rect,
final_rect,
flipped_x,
flipped_y);
}
static void
gtk_menu_destroy (GtkWidget *widget)
{
GtkMenu *menu = GTK_MENU (widget);
GtkMenuPrivate *priv = menu->priv;
GtkMenuAttachData *data;
gtk_menu_remove_scroll_timeout (menu);
data = g_object_get_data (G_OBJECT (widget), attach_data_key);
if (data)
gtk_menu_detach (menu);
gtk_menu_stop_navigating_submenu (menu);
g_clear_object (&priv->old_active_menu_item);
/* Add back the reference count for being a child */
if (priv->needs_destruction_ref)
{
priv->needs_destruction_ref = FALSE;
g_object_ref (widget);
}
g_clear_object (&priv->accel_group);
if (priv->toplevel)
{
g_signal_handlers_disconnect_by_func (priv->toplevel, moved_to_rect_cb, menu);
gtk_widget_destroy (priv->toplevel);
}
g_clear_pointer (&priv->heights, g_free);
GTK_WIDGET_CLASS (gtk_menu_parent_class)->destroy (widget);
}
static void
gtk_menu_finalize (GObject *object)
{
GtkMenu *menu = GTK_MENU (object);
GtkMenuPrivate *priv = menu->priv;
gtk_widget_unparent (priv->top_arrow_widget);
gtk_widget_unparent (priv->bottom_arrow_widget);
G_OBJECT_CLASS (gtk_menu_parent_class)->finalize (object);
}
static void
menu_change_display (GtkMenu *menu,
GdkDisplay *new_display)
{
GtkMenuPrivate *priv = menu->priv;
if (new_display == gtk_widget_get_display (GTK_WIDGET (menu)))
return;
gtk_window_set_display (GTK_WINDOW (priv->toplevel), new_display);
priv->monitor_num = -1;
}
static void
attach_widget_display_changed (GtkWidget *attach_widget,
GdkDisplay *previous_display,
GtkMenu *menu)
{
if (!g_object_get_data (G_OBJECT (menu), "gtk-menu-explicit-display"))
menu_change_display (menu, gtk_widget_get_display (attach_widget));
}
static void
menu_toplevel_attached_to (GtkWindow *toplevel, GParamSpec *pspec, GtkMenu *menu)
{
GtkMenuAttachData *data;
data = g_object_get_data (G_OBJECT (menu), attach_data_key);
g_return_if_fail (data);
gtk_menu_detach (menu);
}
/**
* gtk_menu_attach_to_widget:
* @menu: a #GtkMenu
* @attach_widget: the #GtkWidget that the menu will be attached to
* @detacher: (scope async)(allow-none): the user supplied callback function
* that will be called when the menu calls gtk_menu_detach()
*
* Attaches the menu to the widget and provides a callback function
* that will be invoked when the menu calls gtk_menu_detach() during
* its destruction.
*
* If the menu is attached to the widget then it will be destroyed
* when the widget is destroyed, as if it was a child widget.
* An attached menu will also move between screens correctly if the
* widgets moves between screens.
*/
void
gtk_menu_attach_to_widget (GtkMenu *menu,
GtkWidget *attach_widget,
GtkMenuDetachFunc detacher)
{
GtkMenuAttachData *data;
GList *list;
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (GTK_IS_WIDGET (attach_widget));
/* keep this function in sync with gtk_widget_set_parent() */
data = g_object_get_data (G_OBJECT (menu), attach_data_key);
if (data)
{
g_warning ("gtk_menu_attach_to_widget(): menu already attached to %s",
g_type_name (G_TYPE_FROM_INSTANCE (data->attach_widget)));
return;
}
g_object_ref_sink (menu);
data = g_slice_new (GtkMenuAttachData);
data->attach_widget = attach_widget;
g_signal_connect (attach_widget, "display-changed",
G_CALLBACK (attach_widget_display_changed), menu);
attach_widget_display_changed (attach_widget, NULL, menu);
data->detacher = detacher;
g_object_set_data (G_OBJECT (menu), I_(attach_data_key), data);
list = g_object_steal_data (G_OBJECT (attach_widget), ATTACHED_MENUS);
if (!g_list_find (list, menu))
list = g_list_prepend (list, menu);
g_object_set_data_full (G_OBJECT (attach_widget), I_(ATTACHED_MENUS), list,
(GDestroyNotify) g_list_free);
/* Attach the widget to the toplevel window. */
gtk_window_set_attached_to (GTK_WINDOW (menu->priv->toplevel), attach_widget);
g_signal_connect (GTK_WINDOW (menu->priv->toplevel), "notify::attached-to",
G_CALLBACK (menu_toplevel_attached_to), menu);
_gtk_widget_update_parent_muxer (GTK_WIDGET (menu));
g_object_notify (G_OBJECT (menu), "attach-widget");
}
/**
* gtk_menu_get_attach_widget:
* @menu: a #GtkMenu
*
* Returns the #GtkWidget that the menu is attached to.
*
* Returns: (transfer none): the #GtkWidget that the menu is attached to
*/
GtkWidget*
gtk_menu_get_attach_widget (GtkMenu *menu)
{
GtkMenuAttachData *data;
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
data = g_object_get_data (G_OBJECT (menu), attach_data_key);
if (data)
return data->attach_widget;
return NULL;
}
/**
* gtk_menu_detach:
* @menu: a #GtkMenu
*
* Detaches the menu from the widget to which it had been attached.
* This function will call the callback function, @detacher, provided
* when the gtk_menu_attach_to_widget() function was called.
*/
void
gtk_menu_detach (GtkMenu *menu)
{
GtkWindow *toplevel;
GtkMenuAttachData *data;
GList *list;
g_return_if_fail (GTK_IS_MENU (menu));
toplevel = GTK_WINDOW (menu->priv->toplevel);
/* keep this function in sync with gtk_widget_unparent() */
data = g_object_get_data (G_OBJECT (menu), attach_data_key);
if (!data)
{
g_warning ("gtk_menu_detach(): menu is not attached");
return;
}
g_object_set_data (G_OBJECT (menu), I_(attach_data_key), NULL);
/* Detach the toplevel window. */
if (toplevel)
{
g_signal_handlers_disconnect_by_func (toplevel,
(gpointer) menu_toplevel_attached_to,
menu);
if (gtk_window_get_attached_to (toplevel) == data->attach_widget)
gtk_window_set_attached_to (toplevel, NULL);
}
g_signal_handlers_disconnect_by_func (data->attach_widget,
(gpointer) attach_widget_display_changed,
menu);
if (data->detacher)
data->detacher (data->attach_widget, menu);
list = g_object_steal_data (G_OBJECT (data->attach_widget), ATTACHED_MENUS);
list = g_list_remove (list, menu);
if (list)
g_object_set_data_full (G_OBJECT (data->attach_widget), I_(ATTACHED_MENUS), list,
(GDestroyNotify) g_list_free);
else
g_object_set_data (G_OBJECT (data->attach_widget), I_(ATTACHED_MENUS), NULL);
if (gtk_widget_get_realized (GTK_WIDGET (menu)))
gtk_widget_unrealize (GTK_WIDGET (menu));
g_slice_free (GtkMenuAttachData, data);
_gtk_widget_update_parent_muxer (GTK_WIDGET (menu));
g_object_notify (G_OBJECT (menu), "attach-widget");
g_object_unref (menu);
}
static void
gtk_menu_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkMenu *menu = GTK_MENU (container);
GtkMenuPrivate *priv = menu->priv;
/* Clear out old_active_menu_item if it matches the item we are removing */
if (priv->old_active_menu_item == widget)
g_clear_object (&priv->old_active_menu_item);
GTK_CONTAINER_CLASS (gtk_menu_parent_class)->remove (container, widget);
g_object_set_data (G_OBJECT (widget), I_(ATTACH_INFO_KEY), NULL);
menu_queue_resize (menu);
}
/**
* gtk_menu_new:
*
* Creates a new #GtkMenu
*
* Returns: a new #GtkMenu
*/
GtkWidget*
gtk_menu_new (void)
{
return g_object_new (GTK_TYPE_MENU, NULL);
}
static void
gtk_menu_real_insert (GtkMenuShell *menu_shell,
GtkWidget *child,
gint position)
{
GtkMenu *menu = GTK_MENU (menu_shell);
GtkMenuPrivate *priv = menu->priv;
AttachInfo *ai = get_attach_info (child);
ai->left_attach = -1;
ai->right_attach = -1;
ai->top_attach = -1;
ai->bottom_attach = -1;
gtk_widget_insert_before (child, GTK_WIDGET (menu), priv->bottom_arrow_widget);
GTK_MENU_SHELL_CLASS (gtk_menu_parent_class)->insert (menu_shell, child, position);
menu_queue_resize (menu);
}
static gboolean
popup_grab_on_surface (GdkSurface *surface,
GdkDevice *pointer)
{
GdkGrabStatus status;
GdkSeat *seat;
seat = gdk_device_get_seat (pointer);
status = gdk_seat_grab (seat, surface,
GDK_SEAT_CAPABILITY_ALL, TRUE,
NULL, NULL, NULL, NULL);
return status == GDK_GRAB_SUCCESS;
}
static void
associate_menu_grab_transfer_surface (GtkMenu *menu)
{
GtkMenuPrivate *priv = menu->priv;
GdkSurface *toplevel_surface;
GdkSurface *transfer_surface;
toplevel_surface = gtk_widget_get_surface (priv->toplevel);
transfer_surface = g_object_get_data (G_OBJECT (menu), "gtk-menu-transfer-surface");
if (toplevel_surface == NULL || transfer_surface == NULL)
return;
g_object_set_data (G_OBJECT (toplevel_surface), I_("gdk-attached-grab-surface"), transfer_surface);
}
static void
gtk_menu_popup_internal (GtkMenu *menu,
GdkDevice *device,
GtkWidget *parent_menu_shell,
GtkWidget *parent_menu_item,
guint button,
guint32 activate_time)
{
GtkMenuPrivate *priv = menu->priv;
GtkWidget *widget;
GtkWidget *xgrab_shell;
GtkWidget *parent;
GdkEvent *current_event;
GtkMenuShell *menu_shell;
gboolean grab_keyboard;
GtkWidget *parent_toplevel;
GdkDevice *pointer, *source_device = NULL;
GdkDisplay *display;
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (device == NULL || GDK_IS_DEVICE (device));
display = gtk_widget_get_display (GTK_WIDGET (menu));
if (device == NULL)
device = gtk_get_current_event_device ();
if (device && gdk_device_get_display (device) != display)
device = NULL;
if (device == NULL)
device = gdk_seat_get_pointer (gdk_display_get_default_seat (display));
widget = GTK_WIDGET (menu);
menu_shell = GTK_MENU_SHELL (menu);
if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
pointer = gdk_device_get_associated_device (device);
else
pointer = device;
menu_shell->priv->parent_menu_shell = parent_menu_shell;
priv->seen_item_enter = FALSE;
/* Find the last viewable ancestor, and make an X grab on it
*/
parent = GTK_WIDGET (menu);
xgrab_shell = NULL;
while (parent)
{
gboolean viewable = TRUE;
GtkWidget *tmp = parent;
while (tmp)
{
if (!gtk_widget_get_mapped (tmp))
{
viewable = FALSE;
break;
}
tmp = gtk_widget_get_parent (tmp);
}
if (viewable)
xgrab_shell = parent;
parent = GTK_MENU_SHELL (parent)->priv->parent_menu_shell;
}
/* We want to receive events generated when we map the menu;
* unfortunately, since there is probably already an implicit
* grab in place from the button that the user used to pop up
* the menu, we won't receive then -- in particular, the EnterNotify
* when the menu pops up under the pointer.
*
* If we are grabbing on a parent menu shell, no problem; just grab
* on that menu shell first before popping up the window with
* owner_events = TRUE.
*
* When grabbing on the menu itself, things get more convoluted --
* we do an explicit grab on a specially created window with
* owner_events = TRUE, which we override further down with a
* grab on the menu. (We can't grab on the menu until it is mapped;
* we probably could just leave the grab on the other window,
* with a little reorganization of the code in gtkmenu*).
*/
grab_keyboard = gtk_menu_shell_get_take_focus (menu_shell);
gtk_window_set_accept_focus (GTK_WINDOW (priv->toplevel), grab_keyboard);
if (xgrab_shell && xgrab_shell != widget)
{
if (popup_grab_on_surface (gtk_widget_get_surface (xgrab_shell), pointer))
{
_gtk_menu_shell_set_grab_device (GTK_MENU_SHELL (xgrab_shell), pointer);
GTK_MENU_SHELL (xgrab_shell)->priv->have_xgrab = TRUE;
}
}
else
{
GdkSurface *transfer_surface;
xgrab_shell = widget;
transfer_surface = menu_grab_transfer_surface_get (menu);
if (popup_grab_on_surface (transfer_surface, pointer))
{
_gtk_menu_shell_set_grab_device (GTK_MENU_SHELL (xgrab_shell), pointer);
GTK_MENU_SHELL (xgrab_shell)->priv->have_xgrab = TRUE;
}
}
if (!GTK_MENU_SHELL (xgrab_shell)->priv->have_xgrab)
{
/* We failed to make our pointer/keyboard grab.
* Rather than leaving the user with a stuck up window,
* we just abort here. Presumably the user will try again.
*/
menu_shell->priv->parent_menu_shell = NULL;
menu_grab_transfer_surface_destroy (menu);
return;
}
_gtk_menu_shell_set_grab_device (GTK_MENU_SHELL (menu), pointer);
menu_shell->priv->active = TRUE;
menu_shell->priv->button = button;
/* If we are popping up the menu from something other than, a button
* press then, as a heuristic, we ignore enter events for the menu
* until we get a MOTION_NOTIFY.
*/
current_event = gtk_get_current_event ();
if (current_event)
{
GdkEventType event_type = gdk_event_get_event_type (current_event);
if ((event_type != GDK_BUTTON_PRESS) &&
(event_type != GDK_ENTER_NOTIFY))
menu_shell->priv->ignore_enter = TRUE;
source_device = gdk_event_get_source_device (current_event);
g_object_unref (current_event);
}
else
menu_shell->priv->ignore_enter = TRUE;
parent_toplevel = NULL;
if (parent_menu_shell)
parent_toplevel = gtk_widget_get_toplevel (parent_menu_shell);
else if (!g_object_get_data (G_OBJECT (menu), "gtk-menu-explicit-display"))
{
GtkWidget *attach_widget = gtk_menu_get_attach_widget (menu);
if (attach_widget)
parent_toplevel = gtk_widget_get_toplevel (attach_widget);
}
/* Set transient for to get the right window group and parent */
if (GTK_IS_WINDOW (parent_toplevel))
gtk_window_set_transient_for (GTK_WINDOW (priv->toplevel),
GTK_WINDOW (parent_toplevel));
priv->parent_menu_item = parent_menu_item;
menu_shell->priv->activate_time = activate_time;
/* We need to show the menu here rather in the init function
* because code expects to be able to tell if the menu is onscreen
* by looking at gtk_widget_get_visible (menu)
*/
gtk_widget_show (GTK_WIDGET (menu));
/* Position the menu, possibly changing the size request
*/
gtk_menu_position (menu, TRUE);
associate_menu_grab_transfer_surface (menu);
gtk_menu_scroll_to (menu, priv->scroll_offset);
/* if no item is selected, select the first one */
if (!menu_shell->priv->active_menu_item &&
source_device && gdk_device_get_source (source_device) == GDK_SOURCE_TOUCHSCREEN)
gtk_menu_shell_select_first (menu_shell, TRUE);
/* Once everything is set up correctly, map the toplevel */
gtk_widget_show (priv->toplevel);
if (xgrab_shell == widget)
popup_grab_on_surface (gtk_widget_get_surface (widget), pointer); /* Should always succeed */
gtk_grab_add (GTK_WIDGET (menu));
if (parent_menu_shell)
{
gboolean keyboard_mode;
keyboard_mode = _gtk_menu_shell_get_keyboard_mode (GTK_MENU_SHELL (parent_menu_shell));
_gtk_menu_shell_set_keyboard_mode (menu_shell, keyboard_mode);
}
else if (menu_shell->priv->button == 0) /* a keynav-activated context menu */
_gtk_menu_shell_set_keyboard_mode (menu_shell, TRUE);
_gtk_menu_shell_update_mnemonics (menu_shell);
}
static GdkDevice *
get_device_for_event (const GdkEvent *event)
{
GdkDevice *device = NULL;
GdkSeat *seat = NULL;
GdkDisplay *display = NULL;
device = gdk_event_get_device (event);
if (device)
return device;
seat = gdk_event_get_seat (event);
if (!seat)
{
display = gdk_event_get_display (event);
if (!display)
{
g_warning ("no display for event, using default");
display = gdk_display_get_default ();
}
if (display)
seat = gdk_display_get_default_seat (display);
}
return seat ? gdk_seat_get_pointer (seat) : NULL;
}
/**
* gtk_menu_popup_at_rect:
* @menu: the #GtkMenu to pop up
* @rect_surface: (not nullable): the #GdkSurface @rect is relative to
* @rect: (not nullable): the #GdkRectangle to align @menu with
* @rect_anchor: the point on @rect to align with @menu's anchor point
* @menu_anchor: the point on @menu to align with @rect's anchor point
* @trigger_event: (nullable): the #GdkEvent that initiated this request or
* %NULL if it's the current event
*
* Displays @menu and makes it available for selection.
*
* See gtk_menu_popup_at_widget () and gtk_menu_popup_at_pointer (), which
* handle more common cases for popping up menus.
*
* @menu will be positioned at @rect, aligning their anchor points. @rect is
* relative to the top-left corner of @rect_surface. @rect_anchor and
* @menu_anchor determine anchor points on @rect and @menu to pin together.
* @menu can optionally be offset by #GtkMenu:rect-anchor-dx and
* #GtkMenu:rect-anchor-dy.
*
* Anchors should be specified under the assumption that the text direction is
* left-to-right; they will be flipped horizontally automatically if the text
* direction is right-to-left.
*
* Other properties that influence the behaviour of this function are
* #GtkMenu:anchor-hints and #GtkMenu:menu-type-hint. Connect to the
* #GtkMenu::popped-up signal to find out how it was actually positioned.
*/
void
gtk_menu_popup_at_rect (GtkMenu *menu,
GdkSurface *rect_surface,
const GdkRectangle *rect,
GdkGravity rect_anchor,
GdkGravity menu_anchor,
const GdkEvent *trigger_event)
{
GtkMenuPrivate *priv;
GdkEvent *current_event = NULL;
GdkDevice *device = NULL;
guint button = 0;
guint32 activate_time = GDK_CURRENT_TIME;
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (GDK_IS_SURFACE (rect_surface));
g_return_if_fail (rect);
priv = menu->priv;
priv->rect_surface = rect_surface;
priv->rect = *rect;
priv->widget = NULL;
priv->rect_anchor = rect_anchor;
priv->menu_anchor = menu_anchor;
if (!trigger_event)
{
current_event = gtk_get_current_event ();
trigger_event = current_event;
}
if (trigger_event)
{
device = get_device_for_event (trigger_event);
gdk_event_get_button (trigger_event, &button);
activate_time = gdk_event_get_time (trigger_event);
}
else
g_warning ("no trigger event for menu popup");
gtk_menu_popup_internal (menu,
device,
NULL,
NULL,
button,
activate_time);
g_clear_object (&current_event);
}
/**
* gtk_menu_popup_at_widget:
* @menu: the #GtkMenu to pop up
* @widget: (not nullable): the #GtkWidget to align @menu with
* @widget_anchor: the point on @widget to align with @menu's anchor point
* @menu_anchor: the point on @menu to align with @widget's anchor point
* @trigger_event: (nullable): the #GdkEvent that initiated this request or
* %NULL if it's the current event
*
* Displays @menu and makes it available for selection.
*
* See gtk_menu_popup_at_pointer () to pop up a menu at the master pointer.
* gtk_menu_popup_at_rect () also allows you to position a menu at an arbitrary
* rectangle.
*
* ![](popup-anchors.png)
*
* @menu will be positioned at @widget, aligning their anchor points.
* @widget_anchor and @menu_anchor determine anchor points on @widget and @menu
* to pin together. @menu can optionally be offset by #GtkMenu:rect-anchor-dx
* and #GtkMenu:rect-anchor-dy.
*
* Anchors should be specified under the assumption that the text direction is
* left-to-right; they will be flipped horizontally automatically if the text
* direction is right-to-left.
*
* Other properties that influence the behaviour of this function are
* #GtkMenu:anchor-hints and #GtkMenu:menu-type-hint. Connect to the
* #GtkMenu::popped-up signal to find out how it was actually positioned.
*/
void
gtk_menu_popup_at_widget (GtkMenu *menu,
GtkWidget *widget,
GdkGravity widget_anchor,
GdkGravity menu_anchor,
const GdkEvent *trigger_event)
{
GtkMenuPrivate *priv;
GdkEvent *current_event = NULL;
GdkDevice *device = NULL;
guint button = 0;
guint32 activate_time = GDK_CURRENT_TIME;
GtkWidget *parent_menu_shell = NULL;
GtkWidget *parent_menu_item = NULL;
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (GTK_IS_WIDGET (widget));
priv = menu->priv;
priv->rect_surface = NULL;
priv->widget = widget;
priv->rect_anchor = widget_anchor;
priv->menu_anchor = menu_anchor;
if (!trigger_event)
{
current_event = gtk_get_current_event ();
trigger_event = current_event;
}
if (trigger_event)
{
device = get_device_for_event (trigger_event);
gdk_event_get_button (trigger_event, &button);
activate_time = gdk_event_get_time (trigger_event);
}
else
g_warning ("no trigger event for menu popup");
if (GTK_IS_MENU_ITEM (priv->widget))
{
parent_menu_item = priv->widget;
if (GTK_IS_MENU_SHELL (gtk_widget_get_parent (parent_menu_item)))
parent_menu_shell = gtk_widget_get_parent (parent_menu_item);
}
gtk_menu_popup_internal (menu,
device,
parent_menu_shell,
parent_menu_item,
button,
activate_time);
g_clear_object (&current_event);
}
/**
* gtk_menu_popup_at_pointer:
* @menu: the #GtkMenu to pop up
* @trigger_event: (nullable): the #GdkEvent that initiated this request or
* %NULL if it's the current event
*
* Displays @menu and makes it available for selection.
*
* See gtk_menu_popup_at_widget () to pop up a menu at a widget.
* gtk_menu_popup_at_rect () also allows you to position a menu at an arbitrary
* rectangle.
*
* @menu will be positioned at the pointer associated with @trigger_event.
*
* Properties that influence the behaviour of this function are
* #GtkMenu:anchor-hints, #GtkMenu:rect-anchor-dx, #GtkMenu:rect-anchor-dy, and
* #GtkMenu:menu-type-hint. Connect to the #GtkMenu::popped-up signal to find
* out how it was actually positioned.
*/
void
gtk_menu_popup_at_pointer (GtkMenu *menu,
const GdkEvent *trigger_event)
{
GdkEvent *current_event = NULL;
GdkSurface *rect_surface = NULL;
GdkDevice *device = NULL;
GdkRectangle rect = { 0, 0, 1, 1 };
g_return_if_fail (GTK_IS_MENU (menu));
if (!trigger_event)
{
current_event = gtk_get_current_event ();
trigger_event = current_event;
}
if (trigger_event)
{
rect_surface = gdk_event_get_surface (trigger_event);
if (rect_surface)
{
device = get_device_for_event (trigger_event);
if (device && gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
device = gdk_device_get_associated_device (device);
if (device)
gdk_surface_get_device_position (rect_surface, device, &rect.x, &rect.y, NULL);
}
}
else
g_warning ("no trigger event for menu popup");
gtk_menu_popup_at_rect (menu,
rect_surface,
&rect,
GDK_GRAVITY_SOUTH_EAST,
GDK_GRAVITY_NORTH_WEST,
trigger_event);
g_clear_object (&current_event);
}
static void
get_arrows_border (GtkMenu *menu,
GtkBorder *border)
{
GtkMenuPrivate *priv = menu->priv;
gint top_arrow_height, bottom_arrow_height;
gtk_widget_measure (priv->top_arrow_widget,
GTK_ORIENTATION_VERTICAL,
-1,
&top_arrow_height, NULL,
NULL, NULL);
gtk_widget_measure (priv->bottom_arrow_widget,
GTK_ORIENTATION_VERTICAL,
-1,
&bottom_arrow_height, NULL,
NULL, NULL);
border->top = priv->upper_arrow_visible ? top_arrow_height : 0;
border->bottom = priv->lower_arrow_visible ? bottom_arrow_height : 0;
border->left = border->right = 0;
}
/**
* gtk_menu_update_scroll_offset:
* @menu: the #GtkMenu that popped up
* @flipped_rect: (nullable): the position of @menu after any possible flipping
* or %NULL if unknown
* @final_rect: (nullable): the final position of @menu or %NULL if unknown
* @flipped_x: %TRUE if the anchors were flipped horizontally
* @flipped_y: %TRUE if the anchors were flipped vertically
* @user_data: user data
*
* Updates the scroll offset of @menu based on the amount of sliding done while
* positioning @menu. Connect this to the #GtkMenu::popped-up signal to keep the
* contents of the menu vertically aligned with their ideal position, for combo
* boxes for example.
*/
void
gtk_menu_update_scroll_offset (GtkMenu *menu,
const GdkRectangle *flipped_rect,
const GdkRectangle *final_rect,
gboolean flipped_x,
gboolean flipped_y,
gpointer user_data)
{
GtkBorder arrows_border;
g_return_if_fail (GTK_IS_MENU (menu));
if (!flipped_rect || !final_rect)
return;
get_arrows_border (menu, &arrows_border);
menu->priv->scroll_offset = arrows_border.top + (final_rect->y - flipped_rect->y);
gtk_menu_scroll_to (menu, menu->priv->scroll_offset);
}
/**
* gtk_menu_popdown:
* @menu: a #GtkMenu
*
* Removes the menu from the screen.
*/
void
gtk_menu_popdown (GtkMenu *menu)
{
GtkMenuPrivate *priv;
GtkMenuShell *menu_shell;
g_return_if_fail (GTK_IS_MENU (menu));
menu_shell = GTK_MENU_SHELL (menu);
priv = menu->priv;
menu_shell->priv->parent_menu_shell = NULL;
menu_shell->priv->active = FALSE;
menu_shell->priv->ignore_enter = FALSE;
priv->have_position = FALSE;
gtk_menu_stop_scrolling (menu);
gtk_menu_stop_navigating_submenu (menu);
if (menu_shell->priv->active_menu_item)
{
if (priv->old_active_menu_item)
g_object_unref (priv->old_active_menu_item);
priv->old_active_menu_item = menu_shell->priv->active_menu_item;
g_object_ref (priv->old_active_menu_item);
}
gtk_menu_shell_deselect (menu_shell);
/* The X Grab, if present, will automatically be removed
* when we hide the window
*/
if (priv->toplevel)
{
gtk_widget_hide (priv->toplevel);
gtk_window_set_transient_for (GTK_WINDOW (priv->toplevel), NULL);
}
gtk_widget_hide (GTK_WIDGET (menu));
menu_shell->priv->have_xgrab = FALSE;
gtk_grab_remove (GTK_WIDGET (menu));
_gtk_menu_shell_set_grab_device (menu_shell, NULL);
menu_grab_transfer_surface_destroy (menu);
}
/**
* gtk_menu_get_active:
* @menu: a #GtkMenu
*
* Returns the selected menu item from the menu. This is used by the
* #GtkComboBox.
*
* Returns: (transfer none): the #GtkMenuItem that was last selected
* in the menu. If a selection has not yet been made, the
* first menu item is selected.
*/
GtkWidget*
gtk_menu_get_active (GtkMenu *menu)
{
GtkMenuPrivate *priv;
GtkWidget *child;
GList *children;
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
priv = menu->priv;
if (!priv->old_active_menu_item)
{
child = NULL;
children = GTK_MENU_SHELL (menu)->priv->children;
while (children)
{
child = children->data;
children = children->next;
if (gtk_bin_get_child (GTK_BIN (child)))
break;
child = NULL;
}
priv->old_active_menu_item = child;
if (priv->old_active_menu_item)
g_object_ref (priv->old_active_menu_item);
}
return priv->old_active_menu_item;
}
/**
* gtk_menu_set_active:
* @menu: a #GtkMenu
* @index: the index of the menu item to select. Index values are
* from 0 to n-1
*
* Selects the specified menu item within the menu. This is used by
* the #GtkComboBox and should not be used by anyone else.
*/
void
gtk_menu_set_active (GtkMenu *menu,
guint index)
{
GtkMenuPrivate *priv;
GtkWidget *child;
GList *tmp_list;
g_return_if_fail (GTK_IS_MENU (menu));
priv = menu->priv;
tmp_list = g_list_nth (GTK_MENU_SHELL (menu)->priv->children, index);
if (tmp_list)
{
child = tmp_list->data;
if (gtk_bin_get_child (GTK_BIN (child)))
{
if (priv->old_active_menu_item)
g_object_unref (priv->old_active_menu_item);
priv->old_active_menu_item = child;
g_object_ref (priv->old_active_menu_item);
}
}
g_object_notify (G_OBJECT (menu), "active");
}
/**
* gtk_menu_set_accel_group:
* @menu: a #GtkMenu
* @accel_group: (allow-none): the #GtkAccelGroup to be associated
* with the menu.
*
* Set the #GtkAccelGroup which holds global accelerators for the
* menu. This accelerator group needs to also be added to all windows
* that this menu is being used in with gtk_window_add_accel_group(),
* in order for those windows to support all the accelerators
* contained in this group.
*/
void
gtk_menu_set_accel_group (GtkMenu *menu,
GtkAccelGroup *accel_group)
{
GtkMenuPrivate *priv;
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (GTK_IS_ACCEL_GROUP (accel_group));
priv = menu->priv;
if (priv->accel_group != accel_group)
{
if (priv->accel_group)
g_object_unref (priv->accel_group);
priv->accel_group = accel_group;
if (priv->accel_group)
g_object_ref (priv->accel_group);
_gtk_menu_refresh_accel_paths (menu, TRUE);
}
}
/**
* gtk_menu_get_accel_group:
* @menu: a #GtkMenu
*
* Gets the #GtkAccelGroup which holds global accelerators for the
* menu. See gtk_menu_set_accel_group().
*
* Returns: (transfer none): the #GtkAccelGroup associated with the menu
*/
GtkAccelGroup*
gtk_menu_get_accel_group (GtkMenu *menu)
{
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
return menu->priv->accel_group;
}
static gboolean
gtk_menu_real_can_activate_accel (GtkWidget *widget,
guint signal_id)
{
/* Menu items chain here to figure whether they can activate their
* accelerators. Unlike ordinary widgets, menus allow accel
* activation even if invisible since that's the usual case for
* submenus/popup-menus. however, the state of the attach widget
* affects the "activeness" of the menu.
*/
GtkWidget *awidget = gtk_menu_get_attach_widget (GTK_MENU (widget));
if (awidget)
return gtk_widget_can_activate_accel (awidget, signal_id);
else
return gtk_widget_is_sensitive (widget);
}
/**
* gtk_menu_set_accel_path:
* @menu: a valid #GtkMenu
* @accel_path: (nullable): a valid accelerator path, or %NULL to unset the path
*
* Sets an accelerator path for this menu from which accelerator paths
* for its immediate children, its menu items, can be constructed.
* The main purpose of this function is to spare the programmer the
* inconvenience of having to call gtk_menu_item_set_accel_path() on
* each menu item that should support runtime user changable accelerators.
* Instead, by just calling gtk_menu_set_accel_path() on their parent,
* each menu item of this menu, that contains a label describing its
* purpose, automatically gets an accel path assigned.
*
* For example, a menu containing menu items “New” and “Exit”, will, after
* `gtk_menu_set_accel_path (menu, "<Gnumeric-Sheet>/File");` has been
* called, assign its items the accel paths: `"<Gnumeric-Sheet>/File/New"`
* and `"<Gnumeric-Sheet>/File/Exit"`.
*
* Assigning accel paths to menu items then enables the user to change
* their accelerators at runtime. More details about accelerator paths
* and their default setups can be found at gtk_accel_map_add_entry().
*
* Note that @accel_path string will be stored in a #GQuark. Therefore,
* if you pass a static string, you can save some memory by interning
* it first with g_intern_static_string().
*/
void
gtk_menu_set_accel_path (GtkMenu *menu,
const gchar *accel_path)
{
GtkMenuPrivate *priv;
g_return_if_fail (GTK_IS_MENU (menu));
priv = menu->priv;
if (accel_path)
g_return_if_fail (accel_path[0] == '<' && strchr (accel_path, '/')); /* simplistic check */
priv->accel_path = g_intern_string (accel_path);
if (priv->accel_path)
_gtk_menu_refresh_accel_paths (menu, FALSE);
}
/**
* gtk_menu_get_accel_path:
* @menu: a valid #GtkMenu
*
* Retrieves the accelerator path set on the menu.
*
* Returns: the accelerator path set on the menu.
*/
const gchar*
gtk_menu_get_accel_path (GtkMenu *menu)
{
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
return menu->priv->accel_path;
}
typedef struct {
GtkMenu *menu;
gboolean group_changed;
} AccelPropagation;
static void
refresh_accel_paths_foreach (GtkWidget *widget,
gpointer data)
{
GtkMenuPrivate *priv;
AccelPropagation *prop = data;
if (GTK_IS_MENU_ITEM (widget)) /* should always be true */
{
priv = prop->menu->priv;
_gtk_menu_item_refresh_accel_path (GTK_MENU_ITEM (widget),
priv->accel_path,
priv->accel_group,
prop->group_changed);
}
}
static void
_gtk_menu_refresh_accel_paths (GtkMenu *menu,
gboolean group_changed)
{
GtkMenuPrivate *priv = menu->priv;
if (priv->accel_path && priv->accel_group)
{
AccelPropagation prop;
prop.menu = menu;
prop.group_changed = group_changed;
gtk_container_foreach (GTK_CONTAINER (menu),
refresh_accel_paths_foreach,
&prop);
}
}
/**
* gtk_menu_reposition:
* @menu: a #GtkMenu
*
* Repositions the menu according to its position function.
*/
void
gtk_menu_reposition (GtkMenu *menu)
{
g_return_if_fail (GTK_IS_MENU (menu));
if (gtk_widget_is_drawable (GTK_WIDGET (menu)))
gtk_menu_position (menu, FALSE);
}
/**
* gtk_menu_reorder_child:
* @menu: a #GtkMenu
* @child: the #GtkMenuItem to move
* @position: the new position to place @child.
* Positions are numbered from 0 to n - 1
*
* Moves @child to a new @position in the list of @menu
* children.
*/
void
gtk_menu_reorder_child (GtkMenu *menu,
GtkWidget *child,
gint position)
{
GtkMenuShell *menu_shell;
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (GTK_IS_MENU_ITEM (child));
menu_shell = GTK_MENU_SHELL (menu);
if (g_list_find (menu_shell->priv->children, child))
{
menu_shell->priv->children = g_list_remove (menu_shell->priv->children, child);
menu_shell->priv->children = g_list_insert (menu_shell->priv->children, child, position);
menu_queue_resize (menu);
}
}
static void
gtk_menu_realize (GtkWidget *widget)
{
GTK_WIDGET_CLASS (gtk_menu_parent_class)->realize (widget);
if (GTK_MENU_SHELL (widget)->priv->active_menu_item)
gtk_menu_scroll_item_visible (GTK_MENU_SHELL (widget),
GTK_MENU_SHELL (widget)->priv->active_menu_item);
}
static gboolean
gtk_menu_focus (GtkWidget *widget,
GtkDirectionType direction)
{
/* A menu or its menu items cannot have focus */
return FALSE;
}
static GdkSurface *
menu_grab_transfer_surface_get (GtkMenu *menu)
{
GdkSurface *surface = g_object_get_data (G_OBJECT (menu), "gtk-menu-transfer-surface");
if (!surface)
{
surface = gdk_surface_new_temp (gtk_widget_get_display (GTK_WIDGET (menu)));
gtk_widget_register_surface (GTK_WIDGET (menu), surface);
gdk_surface_show (surface);
g_object_set_data (G_OBJECT (menu), I_("gtk-menu-transfer-surface"), surface);
}
return surface;
}
static void
menu_grab_transfer_surface_destroy (GtkMenu *menu)
{
GdkSurface *surface = g_object_get_data (G_OBJECT (menu), "gtk-menu-transfer-surface");
if (surface)
{
GdkSurface *widget_surface;
gtk_widget_unregister_surface (GTK_WIDGET (menu), surface);
gdk_surface_destroy (surface);
g_object_set_data (G_OBJECT (menu), I_("gtk-menu-transfer-surface"), NULL);
widget_surface = gtk_widget_get_surface (GTK_WIDGET (menu));
g_object_set_data (G_OBJECT (widget_surface), I_("gdk-attached-grab-surface"), surface);
}
}
static void
gtk_menu_unrealize (GtkWidget *widget)
{
GtkMenu *menu = GTK_MENU (widget);
menu_grab_transfer_surface_destroy (menu);
GTK_WIDGET_CLASS (gtk_menu_parent_class)->unrealize (widget);
}
static gint
calculate_line_heights (GtkMenu *menu,
gint for_width,
guint **ret_min_heights,
guint **ret_nat_heights)
{
GtkMenuPrivate *priv;
GtkMenuShell *menu_shell;
GtkWidget *child, *widget;
GList *children;
guint n_columns;
gint n_heights;
guint *min_heights;
guint *nat_heights;
gint avail_width;
priv = menu->priv;
widget = GTK_WIDGET (menu);
menu_shell = GTK_MENU_SHELL (widget);
min_heights = g_new0 (guint, gtk_menu_get_n_rows (menu));
nat_heights = g_new0 (guint, gtk_menu_get_n_rows (menu));
n_heights = gtk_menu_get_n_rows (menu);
n_columns = gtk_menu_get_n_columns (menu);
avail_width = for_width - (2 * priv->toggle_size + priv->accel_size) * n_columns;
for (children = menu_shell->priv->children; children; children = children->next)
{
gint part;
gint toggle_size;
gint l, r, t, b;
gint child_min, child_nat;
child = children->data;
if (!gtk_widget_get_visible (child))
continue;
get_effective_child_attach (child, &l, &r, &t, &b);
part = avail_width / (r - l);
gtk_widget_measure (child, GTK_ORIENTATION_VERTICAL,
part,
&child_min, &child_nat,
NULL, NULL);
gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child), &toggle_size);
part = MAX (child_min, toggle_size) / (b - t);
min_heights[t] = MAX (min_heights[t], part);
part = MAX (child_nat, toggle_size) / (b - t);
nat_heights[t] = MAX (nat_heights[t], part);
}
if (ret_min_heights)
*ret_min_heights = min_heights;
else
g_free (min_heights);
if (ret_nat_heights)
*ret_nat_heights = nat_heights;
else
g_free (nat_heights);
return n_heights;
}
static void
gtk_menu_size_allocate (GtkWidget *widget,
const GtkAllocation *allocation,
int baseline)
{
GtkMenu *menu;
GtkMenuPrivate *priv;
GtkMenuShell *menu_shell;
GtkWidget *child;
GtkAllocation arrow_allocation, child_allocation;
GList *children;
gint x, y, i;
gint width, height;
GtkBorder arrow_border;
g_return_if_fail (GTK_IS_MENU (widget));
g_return_if_fail (allocation != NULL);
menu = GTK_MENU (widget);
menu_shell = GTK_MENU_SHELL (widget);
priv = menu->priv;
g_free (priv->heights);
priv->heights_length = calculate_line_heights (menu,
allocation->width,
&priv->heights,
NULL);
/* refresh our cached height request */
priv->requested_height = 0;
for (i = 0; i < priv->heights_length; i++)
priv->requested_height += priv->heights[i];
x = allocation->x;
y = allocation->y;
width = allocation->width;
height = allocation->height;
if (menu_shell->priv->active)
gtk_menu_scroll_to (menu, priv->scroll_offset);
get_arrows_border (menu, &arrow_border);
arrow_allocation.x = x;
arrow_allocation.y = y;
arrow_allocation.width = width;
arrow_allocation.height = arrow_border.top;
if (priv->upper_arrow_visible)
gtk_widget_size_allocate (priv->top_arrow_widget, &arrow_allocation, -1);
arrow_allocation.y = height - y - arrow_border.bottom;
arrow_allocation.height = arrow_border.bottom;
if (priv->lower_arrow_visible)
gtk_widget_size_allocate (priv->bottom_arrow_widget, &arrow_allocation, -1);
width = MAX (1, width);
height = MAX (1, height);
if (menu_shell->priv->children)
{
gint base_width = width / gtk_menu_get_n_columns (menu);
children = menu_shell->priv->children;
while (children)
{
child = children->data;
children = children->next;
if (gtk_widget_get_visible (child))
{
gint l, r, t, b;
get_effective_child_attach (child, &l, &r, &t, &b);
if (gtk_widget_get_direction (GTK_WIDGET (menu)) == GTK_TEXT_DIR_RTL)
{
guint tmp;
tmp = gtk_menu_get_n_columns (menu) - l;
l = gtk_menu_get_n_columns (menu) - r;
r = tmp;
}
child_allocation.width = (r - l) * base_width;
child_allocation.height = 0;
child_allocation.x = l * base_width;
child_allocation.y = 0;
for (i = 0; i < b; i++)
{
if (i < t)
child_allocation.y += priv->heights[i];
else
child_allocation.height += priv->heights[i];
}
gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child),
priv->toggle_size);
gtk_widget_size_allocate (child, &child_allocation, -1);
}
}
}
}
static void
gtk_menu_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
gtk_snapshot_push_clip (snapshot,
&GRAPHENE_RECT_INIT(
0, 0,
gtk_widget_get_width (widget),
gtk_widget_get_height (widget)));
GTK_WIDGET_CLASS (gtk_menu_parent_class)->snapshot (widget, snapshot);
gtk_snapshot_pop (snapshot);
}
static void
gtk_menu_show (GtkWidget *widget)
{
GtkMenu *menu = GTK_MENU (widget);
_gtk_menu_refresh_accel_paths (menu, FALSE);
GTK_WIDGET_CLASS (gtk_menu_parent_class)->show (widget);
}
static void gtk_menu_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkMenu *menu = GTK_MENU (widget);
GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget);
GtkMenuPrivate *priv = gtk_menu_get_instance_private (menu);
GtkWidget *child;
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
GList *children;
guint max_toggle_size;
guint max_accel_width;
gint child_min, child_nat;
gint min_width, nat_width;
min_width = nat_width = 0;
max_toggle_size = 0;
max_accel_width = 0;
children = menu_shell->priv->children;
while (children)
{
gint part;
gint toggle_size;
gint l, r, t, b;
child = children->data;
children = children->next;
if (! gtk_widget_get_visible (child))
continue;
get_effective_child_attach (child, &l, &r, &t, &b);
/* It's important to size_request the child
* before doing the toggle size request, in
* case the toggle size request depends on the size
* request of a child of the child (e.g. for ImageMenuItem)
*/
gtk_widget_measure (child, GTK_ORIENTATION_HORIZONTAL,
-1, &child_min, &child_nat, NULL, NULL);
gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child), &toggle_size);
max_toggle_size = MAX (max_toggle_size, toggle_size);
max_accel_width = MAX (max_accel_width,
GTK_MENU_ITEM (child)->priv->accelerator_width);
part = child_min / (r - l);
min_width = MAX (min_width, part);
part = child_nat / (r - l);
nat_width = MAX (nat_width, part);
}
/* If the menu doesn't include any images or check items
* reserve the space so that all menus are consistent.
* We only do this for 'ordinary' menus, not for combobox
* menus or multi-column menus
*/
if (max_toggle_size == 0 &&
gtk_menu_get_n_columns (menu) == 1 &&
!priv->no_toggle_size)
{
GtkWidget *menu_item;
GtkWidget *indicator_widget;
gint indicator_width;
/* Create a GtkCheckMenuItem, to query indicator size */
menu_item = gtk_check_menu_item_new ();
indicator_widget = _gtk_check_menu_item_get_indicator_widget (GTK_CHECK_MENU_ITEM (menu_item));
gtk_widget_measure (indicator_widget,
GTK_ORIENTATION_HORIZONTAL,
-1,
&indicator_width, NULL,
NULL, NULL);
max_toggle_size = indicator_width;
gtk_widget_destroy (menu_item);
g_object_ref_sink (menu_item);
g_object_unref (menu_item);
}
min_width += 2 * max_toggle_size + max_accel_width;
min_width *= gtk_menu_get_n_columns (menu);
nat_width += 2 * max_toggle_size + max_accel_width;
nat_width *= gtk_menu_get_n_columns (menu);
priv->toggle_size = max_toggle_size;
priv->accel_size = max_accel_width;
*minimum = min_width;
*natural = nat_width;
}
else /* VERTICAL */
{
if (for_size < 0)
{
gint min_width, nat_width;
/* Menus are height-for-width only, just return the height
* for the minimum width
*/
GTK_WIDGET_GET_CLASS (widget)->measure (widget, GTK_ORIENTATION_HORIZONTAL, -1,
&min_width, &nat_width, NULL, NULL);
GTK_WIDGET_GET_CLASS (widget)->measure (widget, GTK_ORIENTATION_VERTICAL, min_width,
minimum, natural,
minimum_baseline, natural_baseline);
}
else
{
GtkBorder arrow_border;
guint *min_heights, *nat_heights;
gint n_heights, i;
gint min_height, single_height, nat_height;
min_height = nat_height = 0;
single_height = 0;
n_heights =
calculate_line_heights (menu, for_size, &min_heights, &nat_heights);
for (i = 0; i < n_heights; i++)
{
min_height += min_heights[i];
single_height = MAX (single_height, min_heights[i]);
nat_height += nat_heights[i];
}
get_arrows_border (menu, &arrow_border);
single_height += arrow_border.top + arrow_border.bottom;
min_height = MIN (min_height, single_height);
if (priv->have_position)
{
GdkDisplay *display;
GdkMonitor *monitor;
GdkRectangle workarea;
GtkBorder border;
display = gtk_widget_get_display (priv->toplevel);
monitor = gdk_display_get_monitor (display, priv->monitor_num);
gdk_monitor_get_workarea (monitor, &workarea);
if (priv->position_y + min_height > workarea.y + workarea.height)
min_height = workarea.y + workarea.height - priv->position_y;
if (priv->position_y + nat_height > workarea.y + workarea.height)
nat_height = workarea.y + workarea.height - priv->position_y;
_gtk_window_get_shadow_width (GTK_WINDOW (priv->toplevel), &border);
if (priv->position_y + border.top < workarea.y)
{
min_height -= workarea.y - (priv->position_y + border.top);
nat_height -= workarea.y - (priv->position_y + border.top);
}
}
*minimum = min_height;
*natural = nat_height;
g_free (min_heights);
g_free (nat_heights);
}
}
}
static gboolean
pointer_in_menu_surface (GtkWidget *widget,
gdouble x_root,
gdouble y_root)
{
GtkMenu *menu = GTK_MENU (widget);
GtkMenuPrivate *priv = menu->priv;
GtkAllocation allocation;
if (gtk_widget_get_mapped (priv->toplevel))
{
GtkMenuShell *menu_shell;
gint surface_x, surface_y;
gdk_surface_get_position (gtk_widget_get_surface (priv->toplevel),
&surface_x, &surface_y);
gtk_widget_get_allocation (widget, &allocation);
if (x_root >= surface_x && x_root < surface_x + allocation.width &&
y_root >= surface_y && y_root < surface_y + allocation.height)
return TRUE;
menu_shell = GTK_MENU_SHELL (widget);
if (GTK_IS_MENU (menu_shell->priv->parent_menu_shell))
return pointer_in_menu_surface (menu_shell->priv->parent_menu_shell,
x_root, y_root);
}
return FALSE;
}
static void
gtk_menu_pressed_cb (GtkGestureMultiPress *gesture,
int n_press,
double x,
double y,
gpointer user_data)
{
GtkMenu *menu = 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);
const GdkEventButton *button_event = (GdkEventButton *)event;
GdkDevice *source_device;
GtkWidget *event_widget;
source_device = gdk_event_get_source_device (event);
event_widget = gtk_get_event_widget ((GdkEvent *)event);
/* Don't pass down to menu shell if a non-menuitem part of the menu
* was clicked. The check for the event_widget being a GtkMenuShell
* works because we have the pointer grabbed on menu_shell->window
* with owner_events=TRUE, so all events that are either outside
* the menu or on its border are delivered relative to
* menu_shell->window.
*/
if (GTK_IS_MENU_SHELL (event_widget) &&
pointer_in_menu_surface (GTK_WIDGET (menu), button_event->x_root, button_event->y_root))
{
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
return;
}
if (GTK_IS_MENU_ITEM (event_widget) &&
gdk_device_get_source (source_device) == GDK_SOURCE_TOUCHSCREEN &&
GTK_MENU_ITEM (event_widget)->priv->submenu != NULL &&
!gtk_widget_is_drawable (GTK_MENU_ITEM (event_widget)->priv->submenu))
menu->priv->ignore_button_release = TRUE;
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_DENIED);
}
static void
gtk_menu_released_cb (GtkGestureMultiPress *gesture,
int n_press,
double x,
double y,
gpointer user_data)
{
GtkMenu *menu = user_data;
GtkMenuPrivate *priv = menu->priv;
GdkEventSequence *sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
const GdkEvent *event = gtk_gesture_get_last_event (GTK_GESTURE (gesture), sequence);
const GdkEventButton *button_event = (GdkEventButton *)event;
if (priv->ignore_button_release)
{
priv->ignore_button_release = FALSE;
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_DENIED);
return;
}
/* Don't pass down to menu shell if a non-menuitem part of the menu
* was clicked (see comment in gtk_menu_pressed_cb()).
*/
if (GTK_IS_MENU_SHELL (gtk_get_event_widget ((GdkEvent *) event)) &&
pointer_in_menu_surface (GTK_WIDGET (menu), button_event->x_root, button_event->y_root))
{
/* Ugly: make sure menu_shell->button gets reset to 0 when we
* bail out early here so it is in a consistent state for the
* next button press or release in GtkMenuShell.
* See bug #449371.
*/
if (GTK_MENU_SHELL (menu)->priv->active)
GTK_MENU_SHELL (menu)->priv->button = 0;
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
}
}
static gboolean
check_threshold (GtkWidget *widget,
gint start_x,
gint start_y,
gint x,
gint y)
{
#define THRESHOLD 8
return
ABS (start_x - x) > THRESHOLD ||
ABS (start_y - y) > THRESHOLD;
}
static gboolean
definitely_within_item (GtkMenu *menu,
GtkWidget *widget,
gint x,
gint y)
{
int w, h;
graphene_rect_t bounds;
gtk_widget_compute_bounds (widget, GTK_WIDGET (menu), &bounds);
w = bounds.size.width;
h = bounds.size.height;
return
check_threshold (widget, 0, 0, x, y) &&
check_threshold (widget, w - 1, 0, x, y) &&
check_threshold (widget, w - 1, h - 1, x, y) &&
check_threshold (widget, 0, h - 1, x, y);
}
static gboolean
gtk_menu_has_navigation_triangle (GtkMenu *menu)
{
GtkMenuPrivate *priv = menu->priv;
return priv->navigation_height && priv->navigation_width;
}
static void
gtk_menu_motion (GtkEventController *controller,
double x,
double y,
gpointer user_data)
{
GtkWidget *menu_item;
GtkMenu *menu;
GtkMenuShell *menu_shell;
GtkWidget *parent;
GdkDevice *source_device;
GdkEventMotion *event;
menu_item = GTK_WIDGET (user_data);
event = (GdkEventMotion *)gtk_get_current_event (); /* FIXME: controller event */
source_device = gdk_event_get_source_device ((GdkEvent *)event);
if (GTK_IS_MENU (menu_item) &&
gdk_device_get_source (source_device) != GDK_SOURCE_TOUCHSCREEN)
{
GtkMenuPrivate *priv = GTK_MENU(menu_item)->priv;
if (priv->ignore_button_release)
priv->ignore_button_release = FALSE;
gtk_menu_handle_scrolling (GTK_MENU (menu_item), event->x_root, event->y_root, TRUE, TRUE);
}
/*We received the event for one of two reasons:
*
* a) We are the active menu, and did gtk_grab_add()
* b) The widget is a child of ours, and the event was propagated
*
* Since for computation of navigation regions, we want the menu which
* is the parent of the menu item, for a), we need to find that menu,
* which may be different from 'widget'.
*/
parent = gtk_widget_get_parent (menu_item);
if (!GTK_IS_MENU_ITEM (menu_item) ||
!GTK_IS_MENU (parent))
return;
menu_shell = GTK_MENU_SHELL (parent);
menu = GTK_MENU (menu_shell);
if (definitely_within_item (menu, menu_item, event->x, event->y))
menu_shell->priv->activate_time = 0;
/* Check to see if we are within an active submenu's navigation region
*/
if (gtk_menu_navigating_submenu (menu, event->x_root, event->y_root))
return;
/* Make sure we pop down if we enter a non-selectable menu item, so we
* don't show a submenu when the cursor is outside the stay-up triangle.
*/
if (!_gtk_menu_item_is_selectable (menu_item))
{
/* We really want to deselect, but this gives the menushell code
* a chance to do some bookkeeping about the menuitem.
*/
gtk_menu_shell_select_item (menu_shell, menu_item);
}
}
static void
gtk_menu_scroll_by (GtkMenu *menu,
gint step)
{
GtkMenuPrivate *priv = menu->priv;
GtkBorder arrow_border;
GtkWidget *widget;
gint offset;
gint view_height;
widget = GTK_WIDGET (menu);
offset = priv->scroll_offset + step;
get_arrows_border (menu, &arrow_border);
/* Don't scroll over the top if we weren't before: */
if ((priv->scroll_offset >= 0) && (offset < 0))
offset = 0;
view_height = gdk_surface_get_height (gtk_widget_get_surface (widget));
if (priv->scroll_offset == 0 &&
view_height >= priv->requested_height)
return;
/* Don't scroll past the bottom if we weren't before: */
if (priv->scroll_offset > 0)
view_height -= arrow_border.top;
/* Since arrows are shown, reduce view height even more */
view_height -= arrow_border.bottom;
if ((priv->scroll_offset + view_height <= priv->requested_height) &&
(offset + view_height > priv->requested_height))
offset = priv->requested_height - view_height;
if (offset != priv->scroll_offset)
gtk_menu_scroll_to (menu, offset);
}
static gboolean
gtk_menu_scroll_timeout (gpointer data)
{
GtkMenu *menu;
menu = GTK_MENU (data);
gtk_menu_scroll_by (menu, menu->priv->scroll_step);
return TRUE;
}
static void
gtk_menu_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
GtkMenu *menu)
{
gtk_menu_scroll_by (menu, dy * MENU_SCROLL_STEP2);
}
static void
get_arrows_sensitive_area (GtkMenu *menu,
GdkRectangle *upper,
GdkRectangle *lower)
{
GtkMenuPrivate *priv = menu->priv;
GtkWidget *widget = GTK_WIDGET (menu);
GdkSurface *surface;
gint width, height;
gint win_x, win_y;
gint top_arrow_height, bottom_arrow_height;
gtk_widget_measure (priv->top_arrow_widget,
GTK_ORIENTATION_VERTICAL,
-1,
&top_arrow_height, NULL,
NULL, NULL);
gtk_widget_measure (priv->bottom_arrow_widget,
GTK_ORIENTATION_VERTICAL,
-1,
&bottom_arrow_height, NULL,
NULL, NULL);
surface = gtk_widget_get_surface (widget);
width = gdk_surface_get_width (surface);
height = gdk_surface_get_height (surface);
gdk_surface_get_position (surface, &win_x, &win_y);
if (upper)
{
upper->x = win_x;
upper->y = win_y;
upper->width = width;
upper->height = top_arrow_height;
}
if (lower)
{
lower->x = win_x;
lower->y = win_y + height - bottom_arrow_height;
lower->width = width;
lower->height = bottom_arrow_height;
}
}
static void
gtk_menu_handle_scrolling (GtkMenu *menu,
gint x,
gint y,
gboolean enter,
gboolean motion)
{
GtkMenuPrivate *priv = menu->priv;
GtkMenuShell *menu_shell;
GdkRectangle rect;
gboolean in_arrow;
gboolean scroll_fast = FALSE;
gint top_x, top_y;
menu_shell = GTK_MENU_SHELL (menu);
gdk_surface_get_position (gtk_widget_get_surface (priv->toplevel),
&top_x, &top_y);
x -= top_x;
y -= top_y;
/* upper arrow handling */
get_arrows_sensitive_area (menu, &rect, NULL);
in_arrow = FALSE;
if (priv->upper_arrow_visible &&
(x >= rect.x) && (x < rect.x + rect.width) &&
(y >= rect.y) && (y < rect.y + rect.height))
{
in_arrow = TRUE;
}
if ((priv->upper_arrow_state & GTK_STATE_FLAG_INSENSITIVE) == 0)
{
gboolean arrow_pressed = FALSE;
if (priv->upper_arrow_visible)
{
scroll_fast = (y < rect.y + MENU_SCROLL_FAST_ZONE);
if (enter && in_arrow &&
(!priv->upper_arrow_prelight ||
priv->scroll_fast != scroll_fast))
{
priv->upper_arrow_prelight = TRUE;
priv->scroll_fast = scroll_fast;
/* Deselect the active item so that
* any submenus are popped down
*/
gtk_menu_shell_deselect (menu_shell);
gtk_menu_remove_scroll_timeout (menu);
priv->scroll_step = scroll_fast
? -MENU_SCROLL_STEP2
: -MENU_SCROLL_STEP1;
priv->scroll_timeout = g_timeout_add (scroll_fast
? MENU_SCROLL_TIMEOUT2
: MENU_SCROLL_TIMEOUT1,
gtk_menu_scroll_timeout,
menu);
g_source_set_name_by_id (priv->scroll_timeout, "[gtk+] gtk_menu_scroll_timeout");
}
else if (!enter && !in_arrow && priv->upper_arrow_prelight)
{
gtk_menu_stop_scrolling (menu);
}
}
/* check if the button isn't insensitive before
* changing it to something else.
*/
if ((priv->upper_arrow_state & GTK_STATE_FLAG_INSENSITIVE) == 0)
{
GtkStateFlags arrow_state = 0;
if (arrow_pressed)
arrow_state |= GTK_STATE_FLAG_ACTIVE;
if (priv->upper_arrow_prelight)
arrow_state |= GTK_STATE_FLAG_PRELIGHT;
if (arrow_state != priv->upper_arrow_state)
{
priv->upper_arrow_state = arrow_state;
gtk_widget_set_state_flags (priv->top_arrow_widget, arrow_state, TRUE);
}
}
}
/* lower arrow handling */
get_arrows_sensitive_area (menu, NULL, &rect);
in_arrow = FALSE;
if (priv->lower_arrow_visible &&
(x >= rect.x) && (x < rect.x + rect.width) &&
(y >= rect.y) && (y < rect.y + rect.height))
{
in_arrow = TRUE;
}
if ((priv->lower_arrow_state & GTK_STATE_FLAG_INSENSITIVE) == 0)
{
gboolean arrow_pressed = FALSE;
if (priv->lower_arrow_visible)
{
scroll_fast = (y > rect.y + rect.height - MENU_SCROLL_FAST_ZONE);
if (enter && in_arrow &&
(!priv->lower_arrow_prelight ||
priv->scroll_fast != scroll_fast))
{
priv->lower_arrow_prelight = TRUE;
priv->scroll_fast = scroll_fast;
/* Deselect the active item so that
* any submenus are popped down
*/
gtk_menu_shell_deselect (menu_shell);
gtk_menu_remove_scroll_timeout (menu);
priv->scroll_step = scroll_fast
? MENU_SCROLL_STEP2
: MENU_SCROLL_STEP1;
priv->scroll_timeout = g_timeout_add (scroll_fast
? MENU_SCROLL_TIMEOUT2
: MENU_SCROLL_TIMEOUT1,
gtk_menu_scroll_timeout,
menu);
g_source_set_name_by_id (priv->scroll_timeout, "[gtk+] gtk_menu_scroll_timeout");
}
else if (!enter && !in_arrow && priv->lower_arrow_prelight)
{
gtk_menu_stop_scrolling (menu);
}
}
/* check if the button isn't insensitive before
* changing it to something else.
*/
if ((priv->lower_arrow_state & GTK_STATE_FLAG_INSENSITIVE) == 0)
{
GtkStateFlags arrow_state = 0;
if (arrow_pressed)
arrow_state |= GTK_STATE_FLAG_ACTIVE;
if (priv->lower_arrow_prelight)
arrow_state |= GTK_STATE_FLAG_PRELIGHT;
if (arrow_state != priv->lower_arrow_state)
{
priv->lower_arrow_state = arrow_state;
gtk_widget_set_state_flags (priv->bottom_arrow_widget, arrow_state, TRUE);
}
}
}
}
static void
gtk_menu_enter (GtkEventController *controller,
double x,
double y,
gpointer user_data)
{
GdkDevice *source_device;
GdkEventCrossing *event;
event = (GdkEventCrossing *)gtk_get_current_event ();
if (event->mode == GDK_CROSSING_GTK_GRAB ||
event->mode == GDK_CROSSING_GTK_UNGRAB ||
event->mode == GDK_CROSSING_STATE_CHANGED)
return;
source_device = gdk_event_get_source_device ((GdkEvent *) event);
if (gdk_device_get_source (source_device) != GDK_SOURCE_TOUCHSCREEN)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (user_data);
if (!menu_shell->priv->ignore_enter)
gtk_menu_handle_scrolling (GTK_MENU (user_data),
event->x_root, event->y_root, TRUE, TRUE);
}
}
static void
gtk_menu_leave (GtkEventController *controller,
gpointer user_data)
{
GtkMenu *menu;
GdkDevice *source_device;
GdkEventCrossing *event;
event = (GdkEventCrossing *)gtk_get_current_event ();
if (event->mode == GDK_CROSSING_GTK_GRAB ||
event->mode == GDK_CROSSING_GTK_UNGRAB ||
event->mode == GDK_CROSSING_STATE_CHANGED)
return;
menu = GTK_MENU (user_data);
if (gtk_menu_navigating_submenu (menu, event->x_root, event->y_root))
return;
source_device = gdk_event_get_source_device ((GdkEvent *) event);
if (gdk_device_get_source (source_device) != GDK_SOURCE_TOUCHSCREEN)
gtk_menu_handle_scrolling (menu, event->x_root, event->y_root, FALSE, TRUE);
}
static gboolean
gtk_menu_key_pressed (GtkEventControllerKey *controller,
guint keyval,
guint keycode,
GdkModifierType state,
GtkMenu *menu)
{
gtk_menu_stop_navigating_submenu (menu);
return FALSE;
}
static gboolean
pointer_on_menu_widget (GtkMenu *menu,
gdouble x_root,
gdouble y_root)
{
GtkMenuPrivate *priv = menu->priv;
GtkAllocation allocation;
gint surface_x, surface_y;
gtk_widget_get_allocation (GTK_WIDGET (menu), &allocation);
gdk_surface_get_position (gtk_widget_get_surface (priv->toplevel),
&surface_x, &surface_y);
if (x_root >= surface_x && x_root < surface_x + allocation.width &&
y_root >= surface_y && y_root < surface_y + allocation.height)
return TRUE;
return FALSE;
}
static gboolean
gtk_menu_captured_event (GtkWidget *widget,
GdkEvent *event)
{
GdkDevice *source_device;
gboolean retval = FALSE;
GtkMenuPrivate *priv;
GtkMenu *menu;
gdouble x_root, y_root;
guint button;
GdkModifierType state;
menu = GTK_MENU (widget);
priv = menu->priv;
if (!priv->upper_arrow_visible && !priv->lower_arrow_visible && priv->drag_start_y < 0)
return retval;
source_device = gdk_event_get_source_device (event);
gdk_event_get_root_coords (event, &x_root, &y_root);
switch ((guint) gdk_event_get_event_type (event))
{
case GDK_TOUCH_BEGIN:
case GDK_BUTTON_PRESS:
if ((!gdk_event_get_button (event, &button) || button == 1) &&
gdk_device_get_source (source_device) == GDK_SOURCE_TOUCHSCREEN &&
pointer_on_menu_widget (menu, x_root, y_root))
{
priv->drag_start_y = event->button.y_root;
priv->initial_drag_offset = priv->scroll_offset;
priv->drag_scroll_started = FALSE;
}
else
priv->drag_start_y = -1;
priv->drag_already_pressed = TRUE;
break;
case GDK_TOUCH_END:
case GDK_BUTTON_RELEASE:
if (priv->drag_scroll_started)
{
priv->drag_scroll_started = FALSE;
priv->drag_start_y = -1;
priv->drag_already_pressed = FALSE;
retval = TRUE;
}
break;
case GDK_TOUCH_UPDATE:
case GDK_MOTION_NOTIFY:
if ((!gdk_event_get_state (event, &state) || (state & GDK_BUTTON1_MASK) != 0) &&
gdk_device_get_source (source_device) == GDK_SOURCE_TOUCHSCREEN)
{
if (!priv->drag_already_pressed)
{
if (pointer_on_menu_widget (menu, x_root, y_root))
{
priv->drag_start_y = y_root;
priv->initial_drag_offset = priv->scroll_offset;
priv->drag_scroll_started = FALSE;
}
else
priv->drag_start_y = -1;
priv->drag_already_pressed = TRUE;
}
if (priv->drag_start_y < 0 && !priv->drag_scroll_started)
break;
if (priv->drag_scroll_started)
{
gint offset, view_height;
GtkBorder arrow_border;
gdouble y_diff;
y_diff = y_root - priv->drag_start_y;
offset = priv->initial_drag_offset - y_diff;
view_height = gdk_surface_get_height (gtk_widget_get_surface (widget));
get_arrows_border (menu, &arrow_border);
if (priv->upper_arrow_visible)
view_height -= arrow_border.top;
if (priv->lower_arrow_visible)
view_height -= arrow_border.bottom;
offset = CLAMP (offset,
MIN (priv->scroll_offset, 0),
MAX (priv->scroll_offset, priv->requested_height - view_height));
gtk_menu_scroll_to (menu, offset);
retval = TRUE;
}
else if (gtk_drag_check_threshold (widget,
0, priv->drag_start_y,
0, y_root))
{
priv->drag_scroll_started = TRUE;
gtk_menu_shell_deselect (GTK_MENU_SHELL (menu));
retval = TRUE;
}
}
break;
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
if (priv->drag_scroll_started)
retval = TRUE;
break;
default:
break;
}
return retval;
}
static void
gtk_menu_stop_navigating_submenu (GtkMenu *menu)
{
GtkMenuPrivate *priv = menu->priv;
priv->navigation_x = 0;
priv->navigation_y = 0;
priv->navigation_width = 0;
priv->navigation_height = 0;
if (priv->navigation_timeout)
{
g_source_remove (priv->navigation_timeout);
priv->navigation_timeout = 0;
}
}
static gboolean
gtk_menu_navigating_submenu (GtkMenu *menu,
gint event_x,
gint event_y)
{
GtkMenuPrivate *priv = menu->priv;
gint width, height;
if (!gtk_menu_has_navigation_triangle (menu))
return FALSE;
width = priv->navigation_width;
height = priv->navigation_height;
/* Check if x/y are in the triangle spanned by the navigation parameters */
/* 1) Move the coordinates so the triangle starts at 0,0 */
event_x -= priv->navigation_x;
event_y -= priv->navigation_y;
/* 2) Ensure both legs move along the positive axis */
if (width < 0)
{
event_x = -event_x;
width = -width;
}
if (height < 0)
{
event_y = -event_y;
height = -height;
}
/* 3) Check that the given coordinate is inside the triangle. The formula
* is a transformed form of this formula: x/w + y/h <= 1
*/
if (event_x >= 0 && event_y >= 0 &&
event_x * height + event_y * width <= width * height)
{
return TRUE;
}
else
{
gtk_menu_stop_navigating_submenu (menu);
return FALSE;
}
}
static void
gtk_menu_deactivate (GtkMenuShell *menu_shell)
{
GtkWidget *parent;
g_return_if_fail (GTK_IS_MENU (menu_shell));
parent = menu_shell->priv->parent_menu_shell;
menu_shell->priv->activate_time = 0;
gtk_menu_popdown (GTK_MENU (menu_shell));
if (parent)
gtk_menu_shell_deactivate (GTK_MENU_SHELL (parent));
}
static GdkGravity
get_horizontally_flipped_anchor (GdkGravity anchor)
{
switch (anchor)
{
case GDK_GRAVITY_STATIC:
case GDK_GRAVITY_NORTH_WEST:
return GDK_GRAVITY_NORTH_EAST;
case GDK_GRAVITY_NORTH:
return GDK_GRAVITY_NORTH;
case GDK_GRAVITY_NORTH_EAST:
return GDK_GRAVITY_NORTH_WEST;
case GDK_GRAVITY_WEST:
return GDK_GRAVITY_EAST;
case GDK_GRAVITY_CENTER:
return GDK_GRAVITY_CENTER;
case GDK_GRAVITY_EAST:
return GDK_GRAVITY_WEST;
case GDK_GRAVITY_SOUTH_WEST:
return GDK_GRAVITY_SOUTH_EAST;
case GDK_GRAVITY_SOUTH:
return GDK_GRAVITY_SOUTH;
case GDK_GRAVITY_SOUTH_EAST:
return GDK_GRAVITY_SOUTH_WEST;
default:
g_warning ("unknown GdkGravity: %d", anchor);
return anchor;
}
}
static void
gtk_menu_position (GtkMenu *menu,
gboolean set_scroll_offset)
{
GtkMenuPrivate *priv = menu->priv;
GdkSurface *rect_surface = NULL;
GdkRectangle rect;
GtkTextDirection text_direction = GTK_TEXT_DIR_NONE;
GdkGravity rect_anchor;
GdkGravity menu_anchor;
GdkAnchorHints anchor_hints;
gint rect_anchor_dx, rect_anchor_dy;
GdkSurface *toplevel;
gboolean emulated_move_to_rect = FALSE;
rect_anchor = priv->rect_anchor;
menu_anchor = priv->menu_anchor;
anchor_hints = priv->anchor_hints;
rect_anchor_dx = priv->rect_anchor_dx;
rect_anchor_dy = priv->rect_anchor_dy;
if (priv->rect_surface)
{
rect_surface = priv->rect_surface;
rect = priv->rect;
}
else if (priv->widget)
{
rect_surface = gtk_widget_get_surface (priv->widget);
gtk_widget_get_surface_allocation (priv->widget, &rect);
text_direction = gtk_widget_get_direction (priv->widget);
}
else
{
g_assert_not_reached ();
}
/* Realize so we have the proper width and height to figure out
* the right place to popup the menu.
*/
gtk_widget_realize (priv->toplevel);
if (!gtk_widget_get_visible (priv->toplevel))
gtk_window_set_type_hint (GTK_WINDOW (priv->toplevel), priv->menu_type_hint);
if (text_direction == GTK_TEXT_DIR_NONE)
text_direction = gtk_widget_get_direction (GTK_WIDGET (menu));
if (text_direction == GTK_TEXT_DIR_RTL)
{
rect_anchor = get_horizontally_flipped_anchor (rect_anchor);
menu_anchor = get_horizontally_flipped_anchor (menu_anchor);
}
toplevel = gtk_widget_get_surface (priv->toplevel);
gdk_surface_set_transient_for (toplevel, rect_surface);
g_signal_handlers_disconnect_by_func (toplevel, moved_to_rect_cb, menu);
if (!emulated_move_to_rect)
g_signal_connect (toplevel, "moved-to-rect", G_CALLBACK (moved_to_rect_cb),
menu);
gdk_surface_move_to_rect (toplevel,
&rect,
rect_anchor,
menu_anchor,
anchor_hints,
rect_anchor_dx,
rect_anchor_dy);
}
static void
gtk_menu_remove_scroll_timeout (GtkMenu *menu)
{
GtkMenuPrivate *priv = menu->priv;
if (priv->scroll_timeout)
{
g_source_remove (priv->scroll_timeout);
priv->scroll_timeout = 0;
}
}
static void
gtk_menu_stop_scrolling (GtkMenu *menu)
{
GtkMenuPrivate *priv = menu->priv;
GtkCssNode *top_arrow_node, *bottom_arrow_node;
GtkStateFlags state;
gtk_menu_remove_scroll_timeout (menu);
priv->upper_arrow_prelight = FALSE;
priv->lower_arrow_prelight = FALSE;
top_arrow_node = gtk_widget_get_css_node (priv->top_arrow_widget);
state = gtk_css_node_get_state (top_arrow_node);
gtk_css_node_set_state (top_arrow_node, state & ~GTK_STATE_FLAG_PRELIGHT);
bottom_arrow_node = gtk_widget_get_css_node (priv->bottom_arrow_widget);
state = gtk_css_node_get_state (bottom_arrow_node);
gtk_css_node_set_state (bottom_arrow_node, state & ~GTK_STATE_FLAG_PRELIGHT);
}
static void
gtk_menu_scroll_to (GtkMenu *menu,
gint offset)
{
GtkMenuPrivate *priv = menu->priv;
GtkCssNode *top_arrow_node, *bottom_arrow_node;
top_arrow_node = gtk_widget_get_css_node (priv->top_arrow_widget);
gtk_css_node_set_visible (top_arrow_node, priv->upper_arrow_visible);
gtk_css_node_set_state (top_arrow_node, priv->upper_arrow_state);
bottom_arrow_node = gtk_widget_get_css_node (priv->bottom_arrow_widget);
gtk_css_node_set_visible (bottom_arrow_node, priv->lower_arrow_visible);
gtk_css_node_set_state (bottom_arrow_node, priv->lower_arrow_state);
priv->scroll_offset = offset;
}
static gboolean
compute_child_offset (GtkMenu *menu,
GtkWidget *menu_item,
gint *offset,
gint *height,
gboolean *is_last_child)
{
GtkMenuPrivate *priv = menu->priv;
gint item_top_attach;
gint item_bottom_attach;
gint child_offset = 0;
gint i;
get_effective_child_attach (menu_item, NULL, NULL,
&item_top_attach, &item_bottom_attach);
/* there is a possibility that we get called before _size_request,
* so check the height table for safety.
*/
if (!priv->heights || priv->heights_length < gtk_menu_get_n_rows (menu))
return FALSE;
/* when we have a row with only invisible children, its height will
* be zero, so there's no need to check WIDGET_VISIBLE here
*/
for (i = 0; i < item_top_attach; i++)
child_offset += priv->heights[i];
if (is_last_child)
*is_last_child = (item_bottom_attach == gtk_menu_get_n_rows (menu));
if (offset)
*offset = child_offset;
if (height)
*height = priv->heights[item_top_attach];
return TRUE;
}
static void
gtk_menu_scroll_item_visible (GtkMenuShell *menu_shell,
GtkWidget *menu_item)
{
GtkMenu *menu = GTK_MENU (menu_shell);
GtkMenuPrivate *priv = menu->priv;
GtkWidget *widget = GTK_WIDGET (menu_shell);
gint child_offset, child_height;
gint height;
gint y;
gint arrow_height;
gboolean last_child = 0;
/* We need to check if the selected item fully visible.
* If not we need to scroll the menu so that it becomes fully
* visible.
*/
if (compute_child_offset (menu, menu_item,
&child_offset, &child_height, &last_child))
{
y = priv->scroll_offset;
height = gdk_surface_get_height (gtk_widget_get_surface (widget));
if (child_offset < y)
{
/* Ignore the enter event we might get if the pointer
* is on the menu
*/
menu_shell->priv->ignore_enter = TRUE;
gtk_menu_scroll_to (menu, child_offset);
}
else
{
GtkBorder arrow_border;
arrow_height = 0;
get_arrows_border (menu, &arrow_border);
arrow_height = arrow_border.top + arrow_border.bottom;
if (child_offset + child_height > y + height - arrow_height)
{
arrow_height = arrow_border.bottom + arrow_border.top;
y = child_offset + child_height - height + arrow_height;
/* Ignore the enter event we might get if the pointer
* is on the menu
*/
menu_shell->priv->ignore_enter = TRUE;
gtk_menu_scroll_to (menu, y);
}
}
}
}
static void
gtk_menu_select_item (GtkMenuShell *menu_shell,
GtkWidget *menu_item)
{
GtkMenu *menu = GTK_MENU (menu_shell);
if (gtk_widget_get_realized (GTK_WIDGET (menu)))
gtk_menu_scroll_item_visible (menu_shell, menu_item);
GTK_MENU_SHELL_CLASS (gtk_menu_parent_class)->select_item (menu_shell, menu_item);
}
/**
* gtk_menu_set_display:
* @menu: a #GtkMenu
* @display: (allow-none): a #GdkDisplay, or %NULL if the display should be
* determined by the widget the menu is attached to
*
* Sets the #GdkDisplay on which the menu will be displayed.
*/
void
gtk_menu_set_display (GtkMenu *menu,
GdkDisplay *display)
{
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (display == NULL || GDK_IS_DISPLAY (display));
g_object_set_data (G_OBJECT (menu), I_("gtk-menu-explicit-display"), display);
if (display)
{
menu_change_display (menu, display);
}
else
{
GtkWidget *attach_widget = gtk_menu_get_attach_widget (menu);
if (attach_widget)
attach_widget_display_changed (attach_widget, NULL, menu);
}
}
/**
* gtk_menu_attach:
* @menu: a #GtkMenu
* @child: a #GtkMenuItem
* @left_attach: The column number to attach the left side of the item to
* @right_attach: The column number to attach the right side of the item to
* @top_attach: The row number to attach the top of the item to
* @bottom_attach: The row number to attach the bottom of the item to
*
* Adds a new #GtkMenuItem to a (table) menu. The number of “cells” that
* an item will occupy is specified by @left_attach, @right_attach,
* @top_attach and @bottom_attach. These each represent the leftmost,
* rightmost, uppermost and lower column and row numbers of the table.
* (Columns and rows are indexed from zero).
*
* Note that this function is not related to gtk_menu_detach().
*/
void
gtk_menu_attach (GtkMenu *menu,
GtkWidget *child,
guint left_attach,
guint right_attach,
guint top_attach,
guint bottom_attach)
{
GtkMenuShell *menu_shell;
GtkWidget *parent;
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (GTK_IS_MENU_ITEM (child));
parent = gtk_widget_get_parent (child);
g_return_if_fail (parent == NULL || parent == GTK_WIDGET (menu));
g_return_if_fail (left_attach < right_attach);
g_return_if_fail (top_attach < bottom_attach);
menu_shell = GTK_MENU_SHELL (menu);
if (!parent)
{
AttachInfo *ai = get_attach_info (child);
ai->left_attach = left_attach;
ai->right_attach = right_attach;
ai->top_attach = top_attach;
ai->bottom_attach = bottom_attach;
menu_shell->priv->children = g_list_append (menu_shell->priv->children, child);
gtk_widget_insert_before (child, GTK_WIDGET (menu), menu->priv->bottom_arrow_widget);
menu_queue_resize (menu);
}
else
{
gtk_container_child_set (GTK_CONTAINER (parent), child,
"left-attach", left_attach,
"right-attach", right_attach,
"top-attach", top_attach,
"bottom-attach", bottom_attach,
NULL);
}
}
static gint
gtk_menu_get_popup_delay (GtkMenuShell *menu_shell)
{
return MENU_POPUP_DELAY;
}
static GtkWidget *
find_child_containing (GtkMenuShell *menu_shell,
int left,
int right,
int top,
int bottom)
{
GList *list;
/* find a child which includes the area given by
* left, right, top, bottom.
*/
for (list = menu_shell->priv->children; list; list = list->next)
{
gint l, r, t, b;
if (!_gtk_menu_item_is_selectable (list->data))
continue;
get_effective_child_attach (list->data, &l, &r, &t, &b);
if (l <= left && right <= r && t <= top && bottom <= b)
return GTK_WIDGET (list->data);
}
return NULL;
}
static void
gtk_menu_move_current (GtkMenuShell *menu_shell,
GtkMenuDirectionType direction)
{
GtkMenu *menu = GTK_MENU (menu_shell);
gint i;
gint l, r, t, b;
GtkWidget *match = NULL;
if (gtk_widget_get_direction (GTK_WIDGET (menu_shell)) == GTK_TEXT_DIR_RTL)
{
switch (direction)
{
case GTK_MENU_DIR_CHILD:
direction = GTK_MENU_DIR_PARENT;
break;
case GTK_MENU_DIR_PARENT:
direction = GTK_MENU_DIR_CHILD;
break;
case GTK_MENU_DIR_NEXT:
case GTK_MENU_DIR_PREV:
default:
break;
}
}
/* use special table menu key bindings */
if (menu_shell->priv->active_menu_item && gtk_menu_get_n_columns (menu) > 1)
{
get_effective_child_attach (menu_shell->priv->active_menu_item, &l, &r, &t, &b);
if (direction == GTK_MENU_DIR_NEXT)
{
for (i = b; i < gtk_menu_get_n_rows (menu); i++)
{
match = find_child_containing (menu_shell, l, l + 1, i, i + 1);
if (match)
break;
}
if (!match)
{
/* wrap around */
for (i = 0; i < t; i++)
{
match = find_child_containing (menu_shell,
l, l + 1, i, i + 1);
if (match)
break;
}
}
}
else if (direction == GTK_MENU_DIR_PREV)
{
for (i = t; i > 0; i--)
{
match = find_child_containing (menu_shell,
l, l + 1, i - 1, i);
if (match)
break;
}
if (!match)
{
/* wrap around */
for (i = gtk_menu_get_n_rows (menu); i > b; i--)
{
match = find_child_containing (menu_shell,
l, l + 1, i - 1, i);
if (match)
break;
}
}
}
else if (direction == GTK_MENU_DIR_PARENT)
{
/* we go one left if possible */
if (l > 0)
match = find_child_containing (menu_shell,
l - 1, l, t, t + 1);
if (!match)
{
GtkWidget *parent = menu_shell->priv->parent_menu_shell;
if (!parent
|| g_list_length (GTK_MENU_SHELL (parent)->priv->children) <= 1)
match = menu_shell->priv->active_menu_item;
}
}
else if (direction == GTK_MENU_DIR_CHILD)
{
/* we go one right if possible */
if (r < gtk_menu_get_n_columns (menu))
match = find_child_containing (menu_shell, r, r + 1, t, t + 1);
if (!match)
{
GtkWidget *parent = menu_shell->priv->parent_menu_shell;
if (! GTK_MENU_ITEM (menu_shell->priv->active_menu_item)->priv->submenu &&
(!parent ||
g_list_length (GTK_MENU_SHELL (parent)->priv->children) <= 1))
match = menu_shell->priv->active_menu_item;
}
}
if (match)
{
gtk_menu_shell_select_item (menu_shell, match);
return;
}
}
GTK_MENU_SHELL_CLASS (gtk_menu_parent_class)->move_current (menu_shell, direction);
}
static gint
get_visible_size (GtkMenu *menu)
{
GtkAllocation allocation;
GtkWidget *widget = GTK_WIDGET (menu);
GtkBorder arrow_border;
gint menu_height;
gtk_widget_get_allocation (widget, &allocation);
menu_height = allocation.height;
get_arrows_border (menu, &arrow_border);
menu_height -= arrow_border.top;
menu_height -= arrow_border.bottom;
return menu_height;
}
/* Find the sensitive on-screen child containing @y, or if none,
* the nearest selectable onscreen child. (%NULL if none)
*/
static GtkWidget *
child_at (GtkMenu *menu,
gint y)
{
GtkMenuPrivate *priv = menu->priv;
GtkMenuShell *menu_shell = GTK_MENU_SHELL (menu);
GtkWidget *child = NULL;
gint child_offset = 0;
GList *children;
gint menu_height;
gint lower, upper; /* Onscreen bounds */
menu_height = get_visible_size (menu);
lower = priv->scroll_offset;
upper = priv->scroll_offset + menu_height;
for (children = menu_shell->priv->children; children; children = children->next)
{
if (gtk_widget_get_visible (children->data))
{
GtkRequisition child_requisition;
gtk_widget_get_preferred_size (children->data,
&child_requisition, NULL);
if (_gtk_menu_item_is_selectable (children->data) &&
child_offset >= lower &&
child_offset + child_requisition.height <= upper)
{
child = children->data;
if (child_offset + child_requisition.height > y)
return child;
}
child_offset += child_requisition.height;
}
}
return child;
}
static gint
get_menu_height (GtkMenu *menu)
{
GtkMenuPrivate *priv = menu->priv;
GtkBorder arrow_border;
gint height;
height = priv->requested_height;
get_arrows_border (menu, &arrow_border);
height -= arrow_border.top;
height -= arrow_border.bottom;
return height;
}
static void
gtk_menu_real_move_scroll (GtkMenu *menu,
GtkScrollType type)
{
GtkMenuPrivate *priv = menu->priv;
gint page_size = get_visible_size (menu);
gint end_position = get_menu_height (menu);
GtkMenuShell *menu_shell = GTK_MENU_SHELL (menu);
switch ((guint) type)
{
case GTK_SCROLL_PAGE_UP:
case GTK_SCROLL_PAGE_DOWN:
{
gint old_offset;
gint new_offset;
gint child_offset = 0;
gboolean old_upper_arrow_visible;
gint step;
if (type == GTK_SCROLL_PAGE_UP)
step = - page_size;
else
step = page_size;
if (menu_shell->priv->active_menu_item)
{
gint child_height;
if (compute_child_offset (menu, menu_shell->priv->active_menu_item,
&child_offset, &child_height, NULL))
child_offset += child_height / 2;
}
menu_shell->priv->ignore_enter = TRUE;
old_upper_arrow_visible = priv->upper_arrow_visible;
old_offset = priv->scroll_offset;
new_offset = priv->scroll_offset + step;
new_offset = CLAMP (new_offset, 0, end_position - page_size);
gtk_menu_scroll_to (menu, new_offset);
if (menu_shell->priv->active_menu_item)
{
GtkWidget *new_child;
gboolean new_upper_arrow_visible = priv->upper_arrow_visible;
GtkBorder arrow_border;
get_arrows_border (menu, &arrow_border);
if (priv->scroll_offset != old_offset)
step = priv->scroll_offset - old_offset;
step -= (new_upper_arrow_visible - old_upper_arrow_visible) * arrow_border.top;
new_child = child_at (menu, child_offset + step);
if (new_child)
gtk_menu_shell_select_item (menu_shell, new_child);
}
}
break;
case GTK_SCROLL_START:
/* Ignore the enter event we might get if the pointer is on the menu */
menu_shell->priv->ignore_enter = TRUE;
gtk_menu_shell_select_first (menu_shell, TRUE);
break;
case GTK_SCROLL_END:
/* Ignore the enter event we might get if the pointer is on the menu */
menu_shell->priv->ignore_enter = TRUE;
_gtk_menu_shell_select_last (menu_shell, TRUE);
break;
default:
break;
}
}
/**
* gtk_menu_set_monitor:
* @menu: a #GtkMenu
* @monitor_num: the number of the monitor on which the menu should
* be popped up
*
* Informs GTK+ on which monitor a menu should be popped up.
* See gdk_monitor_get_geometry().
*
* This function should be called from a #GtkMenuPositionFunc
* if the menu should not appear on the same monitor as the pointer.
* This information can’t be reliably inferred from the coordinates
* returned by a #GtkMenuPositionFunc, since, for very long menus,
* these coordinates may extend beyond the monitor boundaries or even
* the screen boundaries.
*/
void
gtk_menu_set_monitor (GtkMenu *menu,
gint monitor_num)
{
GtkMenuPrivate *priv;
g_return_if_fail (GTK_IS_MENU (menu));
priv = menu->priv;
if (priv->monitor_num != monitor_num)
{
priv->monitor_num = monitor_num;
g_object_notify (G_OBJECT (menu), "monitor");
}
}
/**
* gtk_menu_get_monitor:
* @menu: a #GtkMenu
*
* Retrieves the number of the monitor on which to show the menu.
*
* Returns: the number of the monitor on which the menu should
* be popped up or -1, if no monitor has been set
*/
gint
gtk_menu_get_monitor (GtkMenu *menu)
{
g_return_val_if_fail (GTK_IS_MENU (menu), -1);
return menu->priv->monitor_num;
}
/**
* gtk_menu_place_on_monitor:
* @menu: a #GtkMenu
* @monitor: the monitor to place the menu on
*
* Places @menu on the given monitor.
*/
void
gtk_menu_place_on_monitor (GtkMenu *menu,
GdkMonitor *monitor)
{
GdkDisplay *display;
gint i, monitor_num;
g_return_if_fail (GTK_IS_MENU (menu));
display = gtk_widget_get_display (GTK_WIDGET (menu));
monitor_num = 0;
for (i = 0; ; i++)
{
GdkMonitor *m = gdk_display_get_monitor (display, i);
if (m == monitor)
{
monitor_num = i;
break;
}
if (m == NULL)
break;
}
gtk_menu_set_monitor (menu, monitor_num);
}
/**
* gtk_menu_get_for_attach_widget:
* @widget: a #GtkWidget
*
* Returns a list of the menus which are attached to this widget.
* This list is owned by GTK+ and must not be modified.
*
* Returns: (element-type GtkWidget) (transfer none): the list
* of menus attached to his widget.
*/
GList*
gtk_menu_get_for_attach_widget (GtkWidget *widget)
{
GList *list;
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
list = g_object_get_data (G_OBJECT (widget), ATTACHED_MENUS);
return list;
}
static void
gtk_menu_grab_notify (GtkWidget *widget,
gboolean was_grabbed)
{
GtkMenu *menu;
GtkWidget *toplevel;
GtkWindowGroup *group;
GtkWidget *grab;
GdkDevice *pointer;
GTK_WIDGET_CLASS (gtk_menu_parent_class)->grab_notify (widget, was_grabbed);
menu = GTK_MENU (widget);
pointer = _gtk_menu_shell_get_grab_device (GTK_MENU_SHELL (widget));
if (!pointer ||
!gtk_widget_device_is_shadowed (widget, pointer))
return;
toplevel = gtk_widget_get_toplevel (widget);
if (!GTK_IS_WINDOW (toplevel))
return;
group = gtk_window_get_group (GTK_WINDOW (toplevel));
grab = gtk_window_group_get_current_grab (group);
if (GTK_MENU_SHELL (widget)->priv->active && !GTK_IS_MENU_SHELL (grab))
gtk_menu_shell_cancel (GTK_MENU_SHELL (widget));
menu->priv->drag_scroll_started = FALSE;
}
/**
* gtk_menu_set_reserve_toggle_size:
* @menu: a #GtkMenu
* @reserve_toggle_size: whether to reserve size for toggles
*
* Sets whether the menu should reserve space for drawing toggles
* or icons, regardless of their actual presence.
*/
void
gtk_menu_set_reserve_toggle_size (GtkMenu *menu,
gboolean reserve_toggle_size)
{
GtkMenuPrivate *priv;
gboolean no_toggle_size;
g_return_if_fail (GTK_IS_MENU (menu));
priv = menu->priv;
no_toggle_size = !reserve_toggle_size;
if (priv->no_toggle_size != no_toggle_size)
{
priv->no_toggle_size = no_toggle_size;
g_object_notify (G_OBJECT (menu), "reserve-toggle-size");
}
}
/**
* gtk_menu_get_reserve_toggle_size:
* @menu: a #GtkMenu
*
* Returns whether the menu reserves space for toggles and
* icons, regardless of their actual presence.
*
* Returns: Whether the menu reserves toggle space
*/
gboolean
gtk_menu_get_reserve_toggle_size (GtkMenu *menu)
{
g_return_val_if_fail (GTK_IS_MENU (menu), FALSE);
return !menu->priv->no_toggle_size;
}
/**
* gtk_menu_new_from_model:
* @model: a #GMenuModel
*
* Creates a #GtkMenu and populates it with menu items and
* submenus according to @model.
*
* The created menu items are connected to actions found in the
* #GtkApplicationWindow to which the menu belongs - typically
* by means of being attached to a widget (see gtk_menu_attach_to_widget())
* that is contained within the #GtkApplicationWindows widget hierarchy.
*
* Actions can also be added using gtk_widget_insert_action_group() on the menu's
* attach widget or on any of its parent widgets.
*
* Returns: a new #GtkMenu
*/
GtkWidget *
gtk_menu_new_from_model (GMenuModel *model)
{
GtkWidget *menu;
g_return_val_if_fail (G_IS_MENU_MODEL (model), NULL);
menu = gtk_menu_new ();
gtk_menu_shell_bind_model (GTK_MENU_SHELL (menu), model, NULL, TRUE);
return menu;
}
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