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gtk2/gtk/gtkmenu.c
Owen Taylor 3895bea4df #136672, reported by Christian Persch; fixes based on a patch by Soeren 
Sun Mar 14 19:26:48 2004  Owen Taylor  <otaylor@redhat.com>

        #136672, reported by Christian Persch; fixes based
        on a patch by Soeren Sandmann.

        * gtk/gtkmenu.c: Change the handling of mixed gridded
        and non-gridded menu items; the old method was causing
        major performance problems even with the "avoid relayout
        on destruction" hack put in recently.

        Now we first lay out the gridded items and then put the
        non-gridded items into empty rows / after the gridded items.
        Layout is done in a central menu_shell_ensure_layout(). Also
        avoid emitting property notifications when we initially
        insert or attach items.

        * gtk/gtkmenushell.[ch] gtk/gtkmenu.c: Stop setting the
        unused menu_shell->menu_flag, and document it as unused
        in the header.

        * tests/testactions.c: Add a test of creating/removing
        lots of items.

        * test/testgtk.c: Add some more cruft to the menu test.
2004-03-15 02:03:59 +00:00

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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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* 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/.
*/
#define GTK_MENU_INTERNALS
#include <config.h>
#include <string.h> /* memset */
#include "gdk/gdkkeysyms.h"
#include "gtkaccellabel.h"
#include "gtkaccelmap.h"
#include "gtkbindings.h"
#include "gtklabel.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkmenu.h"
#include "gtkmenuitem.h"
#include "gtktearoffmenuitem.h"
#include "gtkwindow.h"
#include "gtkhbox.h"
#include "gtkvscrollbar.h"
#include "gtksettings.h"
#include "gtkintl.h"
#define MENU_ITEM_CLASS(w) GTK_MENU_ITEM_GET_CLASS (w)
#define DEFAULT_POPUP_DELAY 225
#define DEFAULT_POPDOWN_DELAY 1000
#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_ARROW_HEIGHT 16
#define MENU_SCROLL_FAST_ZONE 8
#define MENU_SCROLL_TIMEOUT1 50
#define MENU_SCROLL_TIMEOUT2 50
#define ATTACH_INFO_KEY "gtk-menu-child-attach-info-key"
typedef struct _GtkMenuAttachData GtkMenuAttachData;
typedef struct _GtkMenuPrivate GtkMenuPrivate;
struct _GtkMenuAttachData
{
GtkWidget *attach_widget;
GtkMenuDetachFunc detacher;
};
struct _GtkMenuPrivate
{
gboolean have_position;
gint x;
gint y;
/* info used for the table */
guint *heights;
gint heights_length;
gint monitor_num;
/* Cached layout information */
gboolean have_layout;
gint n_rows;
gint n_columns;
};
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,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_TEAROFF_TITLE
};
enum {
CHILD_PROP_0,
CHILD_PROP_LEFT_ATTACH,
CHILD_PROP_RIGHT_ATTACH,
CHILD_PROP_TOP_ATTACH,
CHILD_PROP_BOTTOM_ATTACH
};
static void gtk_menu_class_init (GtkMenuClass *klass);
static void gtk_menu_init (GtkMenu *menu);
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_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 (GtkObject *object);
static void gtk_menu_finalize (GObject *object);
static void gtk_menu_realize (GtkWidget *widget);
static void gtk_menu_unrealize (GtkWidget *widget);
static void gtk_menu_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_menu_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_menu_paint (GtkWidget *widget,
GdkEventExpose *expose);
static void gtk_menu_show (GtkWidget *widget);
static gboolean gtk_menu_expose (GtkWidget *widget,
GdkEventExpose *event);
static gboolean gtk_menu_key_press (GtkWidget *widget,
GdkEventKey *event);
static gboolean gtk_menu_button_press (GtkWidget *widget,
GdkEventButton *event);
static gboolean gtk_menu_button_release (GtkWidget *widget,
GdkEventButton *event);
static gboolean gtk_menu_motion_notify (GtkWidget *widget,
GdkEventMotion *event);
static gboolean gtk_menu_enter_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean gtk_menu_leave_notify (GtkWidget *widget,
GdkEventCrossing *event);
static void gtk_menu_scroll_to (GtkMenu *menu,
gint offset);
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_scrollbar_changed (GtkAdjustment *adjustment,
GtkMenu *menu);
static void gtk_menu_handle_scrolling (GtkMenu *menu,
gboolean enter);
static void gtk_menu_set_tearoff_hints (GtkMenu *menu,
gint width);
static void gtk_menu_style_set (GtkWidget *widget,
GtkStyle *previous_style);
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_stop_navigating_submenu_cb (gpointer user_data);
static gboolean gtk_menu_navigating_submenu (GtkMenu *menu,
gint event_x,
gint event_y);
static void gtk_menu_set_submenu_navigation_region (GtkMenu *menu,
GtkMenuItem *menu_item,
GdkEventCrossing *event);
static void gtk_menu_deactivate (GtkMenuShell *menu_shell);
static void gtk_menu_show_all (GtkWidget *widget);
static void gtk_menu_hide_all (GtkWidget *widget);
static void gtk_menu_position (GtkMenu *menu);
static void gtk_menu_reparent (GtkMenu *menu,
GtkWidget *new_parent,
gboolean unrealize);
static void gtk_menu_remove (GtkContainer *menu,
GtkWidget *widget);
static void gtk_menu_update_title (GtkMenu *menu);
static void menu_grab_transfer_window_destroy (GtkMenu *menu);
static GdkWindow *menu_grab_transfer_window_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 GtkMenuShellClass *parent_class = NULL;
static const gchar *attach_data_key = "gtk-menu-attach-data";
static guint menu_signals[LAST_SIGNAL] = { 0 };
static void
gtk_menu_free_private (gpointer data)
{
GtkMenuPrivate *priv = (GtkMenuPrivate *)data;
g_free (priv->heights);
g_free (priv);
}
GtkMenuPrivate *
gtk_menu_get_private (GtkMenu *menu)
{
GtkMenuPrivate *private;
static GQuark private_quark = 0;
if (!private_quark)
private_quark = g_quark_from_static_string ("gtk-menu-private");
private = g_object_get_qdata (G_OBJECT (menu), private_quark);
if (!private)
{
private = g_new0 (GtkMenuPrivate, 1);
private->have_position = FALSE;
g_object_set_qdata_full (G_OBJECT (menu), private_quark,
private, gtk_menu_free_private);
}
return private;
}
GType
gtk_menu_get_type (void)
{
static GType menu_type = 0;
if (!menu_type)
{
static const GTypeInfo menu_info =
{
sizeof (GtkMenuClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_menu_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkMenu),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_menu_init,
};
menu_type = g_type_register_static (GTK_TYPE_MENU_SHELL, "GtkMenu",
&menu_info, 0);
}
return menu_type;
}
static void
menu_queue_resize (GtkMenu *menu)
{
GtkMenuPrivate *priv = gtk_menu_get_private (menu);
priv->have_layout = FALSE;
gtk_widget_queue_resize (GTK_WIDGET (menu));
}
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_new0 (AttachInfo, 1);
g_object_set_data_full (object, ATTACH_INFO_KEY, ai, g_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 = gtk_menu_get_private (menu);
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->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->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->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 = gtk_menu_get_private (menu);
menu_ensure_layout (menu);
return priv->n_columns;
}
static gint
gtk_menu_get_n_rows (GtkMenu *menu)
{
GtkMenuPrivate *priv = gtk_menu_get_private (menu);
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 (child->parent);
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);
GtkObjectClass *object_class = GTK_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;
parent_class = g_type_class_peek_parent (class);
gobject_class->finalize = gtk_menu_finalize;
gobject_class->set_property = gtk_menu_set_property;
gobject_class->get_property = gtk_menu_get_property;
object_class->destroy = gtk_menu_destroy;
widget_class->realize = gtk_menu_realize;
widget_class->unrealize = gtk_menu_unrealize;
widget_class->size_request = gtk_menu_size_request;
widget_class->size_allocate = gtk_menu_size_allocate;
widget_class->show = gtk_menu_show;
widget_class->expose_event = gtk_menu_expose;
widget_class->key_press_event = gtk_menu_key_press;
widget_class->button_press_event = gtk_menu_button_press;
widget_class->button_release_event = gtk_menu_button_release;
widget_class->motion_notify_event = gtk_menu_motion_notify;
widget_class->show_all = gtk_menu_show_all;
widget_class->hide_all = gtk_menu_hide_all;
widget_class->enter_notify_event = gtk_menu_enter_notify;
widget_class->leave_notify_event = gtk_menu_leave_notify;
widget_class->motion_notify_event = gtk_menu_motion_notify;
widget_class->style_set = gtk_menu_style_set;
widget_class->focus = gtk_menu_focus;
widget_class->can_activate_accel = gtk_menu_real_can_activate_accel;
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;
menu_signals[MOVE_SCROLL] =
_gtk_binding_signal_new ("move_scroll",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gtk_menu_real_move_scroll),
NULL, NULL,
_gtk_marshal_VOID__ENUM,
G_TYPE_NONE, 1,
GTK_TYPE_SCROLL_TYPE);
g_object_class_install_property (gobject_class,
PROP_TEAROFF_TITLE,
g_param_spec_string ("tearoff-title",
P_("Tearoff Title"),
P_("A title that may be displayed by the window manager when this menu is torn-off"),
"",
G_PARAM_READABLE | G_PARAM_WRITABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("vertical-padding",
P_("Vertical Padding"),
P_("Extra space at the top and bottom of the menu"),
0,
G_MAXINT,
1,
G_PARAM_READABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("vertical-offset",
P_("Vertical Offset"),
P_("When the menu is a submenu, position it this number of pixels offset vertically"),
G_MININT,
G_MAXINT,
0,
G_PARAM_READABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("horizontal-offset",
P_("Horizontal Offset"),
P_("When the menu is a submenu, position it this number of pixels offset horizontally"),
G_MININT,
G_MAXINT,
-2,
G_PARAM_READABLE));
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,
G_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,
G_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,
G_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,
G_PARAM_READWRITE));
binding_set = gtk_binding_set_by_class (class);
gtk_binding_entry_add_signal (binding_set,
GDK_Up, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PREV);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Up, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PREV);
gtk_binding_entry_add_signal (binding_set,
GDK_Down, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_NEXT);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Down, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_NEXT);
gtk_binding_entry_add_signal (binding_set,
GDK_Left, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PARENT);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Left, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PARENT);
gtk_binding_entry_add_signal (binding_set,
GDK_Right, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_CHILD);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Right, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_CHILD);
gtk_binding_entry_add_signal (binding_set,
GDK_Home, 0,
"move_scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_START);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Home, 0,
"move_scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_START);
gtk_binding_entry_add_signal (binding_set,
GDK_End, 0,
"move_scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_END);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_End, 0,
"move_scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_END);
gtk_binding_entry_add_signal (binding_set,
GDK_Page_Up, 0,
"move_scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_PAGE_UP);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Page_Up, 0,
"move_scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_PAGE_UP);
gtk_binding_entry_add_signal (binding_set,
GDK_Page_Down, 0,
"move_scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_PAGE_DOWN);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Page_Down, 0,
"move_scroll", 1,
GTK_TYPE_SCROLL_TYPE,
GTK_SCROLL_PAGE_DOWN);
gtk_settings_install_property (g_param_spec_boolean ("gtk-can-change-accels",
P_("Can change accelerators"),
P_("Whether menu accelerators can be changed by pressing a key over the menu item"),
FALSE,
G_PARAM_READWRITE));
gtk_settings_install_property (g_param_spec_int ("gtk-menu-popup-delay",
P_("Delay before submenus appear"),
P_("Minimum time the pointer must stay over a menu item before the submenu appear"),
0,
G_MAXINT,
DEFAULT_POPUP_DELAY,
G_PARAM_READWRITE));
gtk_settings_install_property (g_param_spec_int ("gtk-menu-popdown-delay",
P_("Delay before hiding a submenu"),
P_("The time before hiding a submenu when the pointer is moving towards the submenu"),
0,
G_MAXINT,
DEFAULT_POPDOWN_DELAY,
G_PARAM_READWRITE));
}
static void
gtk_menu_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkMenu *menu;
menu = GTK_MENU (object);
switch (prop_id)
{
case PROP_TEAROFF_TITLE:
gtk_menu_set_title (menu, g_value_get_string (value));
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;
menu = GTK_MENU (object);
switch (prop_id)
{
case PROP_TEAROFF_TITLE:
g_value_set_string (value, gtk_menu_get_title (menu));
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 gboolean
gtk_menu_window_event (GtkWidget *window,
GdkEvent *event,
GtkWidget *menu)
{
gboolean handled = FALSE;
g_object_ref (window);
g_object_ref (menu);
switch (event->type)
{
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
handled = gtk_widget_event (menu, event);
break;
default:
break;
}
g_object_unref (window);
g_object_unref (menu);
return handled;
}
static void
gtk_menu_window_size_request (GtkWidget *window,
GtkRequisition *requisition,
GtkMenu *menu)
{
GtkMenuPrivate *private = gtk_menu_get_private (menu);
if (private->have_position)
{
GdkScreen *screen = gtk_widget_get_screen (window);
GdkRectangle monitor;
gdk_screen_get_monitor_geometry (screen, private->monitor_num, &monitor);
if (private->y + requisition->height > monitor.y + monitor.height)
requisition->height = monitor.y + monitor.height - private->y;
if (private->y < monitor.y)
requisition->height -= monitor.y - private->y;
}
}
static void
gtk_menu_init (GtkMenu *menu)
{
GtkMenuPrivate *priv = gtk_menu_get_private (menu);
menu->parent_menu_item = NULL;
menu->old_active_menu_item = NULL;
menu->accel_group = NULL;
menu->position_func = NULL;
menu->position_func_data = NULL;
menu->toggle_size = 0;
menu->toplevel = g_object_connect (g_object_new (GTK_TYPE_WINDOW,
"type", GTK_WINDOW_POPUP,
"child", menu,
NULL),
"signal::event", gtk_menu_window_event, menu,
"signal::size_request", gtk_menu_window_size_request, menu,
"signal::destroy", gtk_widget_destroyed, &menu->toplevel,
NULL);
gtk_window_set_resizable (GTK_WINDOW (menu->toplevel), FALSE);
gtk_window_set_mnemonic_modifier (GTK_WINDOW (menu->toplevel), 0);
/* Refloat the menu, so that reference counting for the menu isn't
* affected by it being a child of the toplevel
*/
GTK_WIDGET_SET_FLAGS (menu, GTK_FLOATING);
menu->needs_destruction_ref_count = TRUE;
menu->view_window = NULL;
menu->bin_window = NULL;
menu->scroll_offset = 0;
menu->scroll_step = 0;
menu->timeout_id = 0;
menu->scroll_fast = FALSE;
menu->tearoff_window = NULL;
menu->tearoff_hbox = NULL;
menu->torn_off = FALSE;
menu->tearoff_active = FALSE;
menu->tearoff_adjustment = NULL;
menu->tearoff_scrollbar = NULL;
menu->upper_arrow_visible = FALSE;
menu->lower_arrow_visible = FALSE;
menu->upper_arrow_prelight = FALSE;
menu->lower_arrow_prelight = FALSE;
priv->have_layout = FALSE;
}
static void
gtk_menu_destroy (GtkObject *object)
{
GtkMenu *menu;
GtkMenuAttachData *data;
GtkMenuPrivate *priv;
g_return_if_fail (GTK_IS_MENU (object));
menu = GTK_MENU (object);
gtk_menu_stop_scrolling (menu);
data = g_object_get_data (G_OBJECT (object), attach_data_key);
if (data)
gtk_menu_detach (menu);
gtk_menu_stop_navigating_submenu (menu);
if (menu->old_active_menu_item)
{
g_object_unref (menu->old_active_menu_item);
menu->old_active_menu_item = NULL;
}
/* Add back the reference count for being a child */
if (menu->needs_destruction_ref_count)
{
menu->needs_destruction_ref_count = FALSE;
g_object_ref (object);
}
if (menu->accel_group)
{
g_object_unref (menu->accel_group);
menu->accel_group = NULL;
}
if (menu->toplevel)
gtk_widget_destroy (menu->toplevel);
if (menu->tearoff_window)
gtk_widget_destroy (menu->tearoff_window);
priv = gtk_menu_get_private (menu);
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
static void
gtk_menu_finalize (GObject *object)
{
GtkMenu *menu = GTK_MENU (object);
g_free (menu->accel_path);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
menu_change_screen (GtkMenu *menu,
GdkScreen *new_screen)
{
GtkMenuPrivate *private = gtk_menu_get_private (menu);
if (menu->torn_off)
{
gtk_window_set_screen (GTK_WINDOW (menu->tearoff_window), new_screen);
gtk_menu_position (menu);
}
gtk_window_set_screen (GTK_WINDOW (menu->toplevel), new_screen);
private->monitor_num = -1;
}
static void
attach_widget_screen_changed (GtkWidget *attach_widget,
GdkScreen *previous_screen,
GtkMenu *menu)
{
if (gtk_widget_has_screen (attach_widget) &&
!g_object_get_data (G_OBJECT (menu), "gtk-menu-explicit-screen"))
{
menu_change_screen (menu, gtk_widget_get_screen (attach_widget));
}
}
void
gtk_menu_attach_to_widget (GtkMenu *menu,
GtkWidget *attach_widget,
GtkMenuDetachFunc detacher)
{
GtkMenuAttachData *data;
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (GTK_IS_WIDGET (attach_widget));
g_return_if_fail (detacher != NULL);
/* 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 (menu);
gtk_object_sink (GTK_OBJECT (menu));
data = g_new (GtkMenuAttachData, 1);
data->attach_widget = attach_widget;
g_signal_connect (attach_widget, "screen_changed",
G_CALLBACK (attach_widget_screen_changed), menu);
attach_widget_screen_changed (attach_widget, NULL, menu);
data->detacher = detacher;
g_object_set_data (G_OBJECT (menu), attach_data_key, data);
if (GTK_WIDGET_STATE (menu) != GTK_STATE_NORMAL)
gtk_widget_set_state (GTK_WIDGET (menu), GTK_STATE_NORMAL);
/* we don't need to set the style here, since
* we are a toplevel widget.
*/
/* Fallback title for menu comes from attach widget */
gtk_menu_update_title (menu);
}
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;
}
void
gtk_menu_detach (GtkMenu *menu)
{
GtkMenuAttachData *data;
g_return_if_fail (GTK_IS_MENU (menu));
/* 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), attach_data_key, NULL);
g_signal_handlers_disconnect_by_func (data->attach_widget,
(gpointer) attach_widget_screen_changed,
menu);
data->detacher (data->attach_widget, menu);
if (GTK_WIDGET_REALIZED (menu))
gtk_widget_unrealize (GTK_WIDGET (menu));
g_free (data);
/* Fallback title for menu comes from attach widget */
gtk_menu_update_title (menu);
g_object_unref (menu);
}
static void
gtk_menu_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkMenu *menu;
GtkMenuPrivate *priv;
g_return_if_fail (GTK_IS_MENU (container));
g_return_if_fail (GTK_IS_MENU_ITEM (widget));
menu = GTK_MENU (container);
priv = gtk_menu_get_private (menu);
/* Clear out old_active_menu_item if it matches the item we are removing
*/
if (menu->old_active_menu_item == widget)
{
g_object_unref (menu->old_active_menu_item);
menu->old_active_menu_item = NULL;
}
GTK_CONTAINER_CLASS (parent_class)->remove (container, widget);
g_object_set_data (G_OBJECT (widget), ATTACH_INFO_KEY, NULL);
menu_queue_resize (menu);
}
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);
AttachInfo *ai = get_attach_info (child);
ai->left_attach = -1;
ai->right_attach = -1;
ai->top_attach = -1;
ai->bottom_attach = -1;
if (GTK_WIDGET_REALIZED (menu_shell))
gtk_widget_set_parent_window (child, menu->bin_window);
GTK_MENU_SHELL_CLASS (parent_class)->insert (menu_shell, child, position);
menu_queue_resize (menu);
}
static void
gtk_menu_tearoff_bg_copy (GtkMenu *menu)
{
GtkWidget *widget;
gint width, height;
widget = GTK_WIDGET (menu);
if (menu->torn_off)
{
GdkPixmap *pixmap;
GdkGC *gc;
GdkGCValues gc_values;
menu->tearoff_active = FALSE;
menu->saved_scroll_offset = menu->scroll_offset;
gc_values.subwindow_mode = GDK_INCLUDE_INFERIORS;
gc = gdk_gc_new_with_values (widget->window,
&gc_values, GDK_GC_SUBWINDOW);
gdk_drawable_get_size (menu->tearoff_window->window, &width, &height);
pixmap = gdk_pixmap_new (menu->tearoff_window->window,
width,
height,
-1);
gdk_draw_drawable (pixmap, gc,
menu->tearoff_window->window,
0, 0, 0, 0, -1, -1);
g_object_unref (gc);
gtk_widget_set_size_request (menu->tearoff_window,
width,
height);
gdk_window_set_back_pixmap (menu->tearoff_window->window, pixmap, FALSE);
g_object_unref (pixmap);
}
}
static gboolean
popup_grab_on_window (GdkWindow *window,
guint32 activate_time)
{
if ((gdk_pointer_grab (window, TRUE,
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK |
GDK_POINTER_MOTION_MASK,
NULL, NULL, activate_time) == 0))
{
if (gdk_keyboard_grab (window, TRUE,
activate_time) == 0)
return TRUE;
else
{
gdk_display_pointer_ungrab (gdk_drawable_get_display (window),
activate_time);
return FALSE;
}
}
return FALSE;
}
/**
* gtk_menu_popup:
* @menu: a #GtkMenu.
* @parent_menu_shell: the menu shell containing the triggering menu item, or %NULL
* @parent_menu_item: the menu item whose activation triggered the popup, or %NULL
* @func: a user supplied function used to position the menu, or %NULL
* @data: user supplied data to be passed to @func.
* @button: the mouse button which was pressed to initiate the event.
* @activate_time: the time at which the activation event occurred.
*
* Displays a menu and makes it available for selection. Applications can use
* this function to display context-sensitive menus, and will typically supply
* %NULL for the @parent_menu_shell, @parent_menu_item, @func and @data
* parameters. The default menu positioning function will position the menu
* at the current mouse cursor position.
*
* The @button parameter should be the mouse button pressed to initiate
* the menu popup. If the menu popup was initiated by something other than
* a mouse button press, such as a mouse button release or a keypress,
* @button should be 0.
*
* The @activate_time parameter should be the time stamp of the event that
* initiated the popup. If such an event is not available, use
* gtk_get_current_event_time() instead.
*
*/
void
gtk_menu_popup (GtkMenu *menu,
GtkWidget *parent_menu_shell,
GtkWidget *parent_menu_item,
GtkMenuPositionFunc func,
gpointer data,
guint button,
guint32 activate_time)
{
GtkWidget *widget;
GtkWidget *xgrab_shell;
GtkWidget *parent;
GdkEvent *current_event;
GtkMenuShell *menu_shell;
g_return_if_fail (GTK_IS_MENU (menu));
widget = GTK_WIDGET (menu);
menu_shell = GTK_MENU_SHELL (menu);
menu_shell->parent_menu_shell = parent_menu_shell;
/* 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_MAPPED (tmp))
{
viewable = FALSE;
break;
}
tmp = tmp->parent;
}
if (viewable)
xgrab_shell = parent;
parent = GTK_MENU_SHELL (parent)->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 convuluted - we
* 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*).
*/
if (xgrab_shell && xgrab_shell != widget)
{
if (popup_grab_on_window (xgrab_shell->window, activate_time))
GTK_MENU_SHELL (xgrab_shell)->have_xgrab = TRUE;
}
else
{
GdkWindow *transfer_window;
xgrab_shell = widget;
transfer_window = menu_grab_transfer_window_get (menu);
if (popup_grab_on_window (transfer_window, activate_time))
GTK_MENU_SHELL (xgrab_shell)->have_xgrab = TRUE;
}
if (!GTK_MENU_SHELL (xgrab_shell)->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->parent_menu_shell = NULL;
menu_grab_transfer_window_destroy (menu);
return;
}
menu_shell->active = TRUE;
menu_shell->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)
{
if ((current_event->type != GDK_BUTTON_PRESS) &&
(current_event->type != GDK_ENTER_NOTIFY))
menu_shell->ignore_enter = TRUE;
gdk_event_free (current_event);
}
else
menu_shell->ignore_enter = TRUE;
if (menu->torn_off)
{
gtk_menu_tearoff_bg_copy (menu);
gtk_menu_reparent (menu, menu->toplevel, FALSE);
}
if (parent_menu_shell)
{
GtkWidget *toplevel;
toplevel = gtk_widget_get_toplevel (parent_menu_shell);
if (GTK_IS_WINDOW (toplevel))
gtk_window_group_add_window (_gtk_window_get_group (GTK_WINDOW (toplevel)),
GTK_WINDOW (menu->toplevel));
}
menu->parent_menu_item = parent_menu_item;
menu->position_func = func;
menu->position_func_data = data;
menu_shell->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 the GTK_WIDGET_VISIBLE (menu)
*/
gtk_widget_show (GTK_WIDGET (menu));
/* Position the menu, possibly changing the size request
*/
gtk_menu_position (menu);
/* Compute the size of the toplevel and realize it so we
* can scroll correctly.
*/
{
GtkRequisition tmp_request;
GtkAllocation tmp_allocation = { 0, };
gtk_widget_size_request (menu->toplevel, &tmp_request);
tmp_allocation.width = tmp_request.width;
tmp_allocation.height = tmp_request.height;
gtk_widget_size_allocate (menu->toplevel, &tmp_allocation);
gtk_widget_realize (GTK_WIDGET (menu));
}
gtk_menu_scroll_to (menu, menu->scroll_offset);
/* Once everything is set up correctly, map the toplevel window on
the screen.
*/
gtk_widget_show (menu->toplevel);
if (xgrab_shell == widget)
popup_grab_on_window (widget->window, activate_time); /* Should always succeed */
gtk_grab_add (GTK_WIDGET (menu));
}
void
gtk_menu_popdown (GtkMenu *menu)
{
GtkMenuPrivate *private;
GtkMenuShell *menu_shell;
g_return_if_fail (GTK_IS_MENU (menu));
menu_shell = GTK_MENU_SHELL (menu);
private = gtk_menu_get_private (menu);
menu_shell->parent_menu_shell = NULL;
menu_shell->active = FALSE;
menu_shell->ignore_enter = FALSE;
private->have_position = FALSE;
gtk_menu_stop_scrolling (menu);
gtk_menu_stop_navigating_submenu (menu);
if (menu_shell->active_menu_item)
{
if (menu->old_active_menu_item)
g_object_unref (menu->old_active_menu_item);
menu->old_active_menu_item = menu_shell->active_menu_item;
g_object_ref (menu->old_active_menu_item);
}
gtk_menu_shell_deselect (menu_shell);
/* The X Grab, if present, will automatically be removed when we hide
* the window */
gtk_widget_hide (menu->toplevel);
gtk_window_group_add_window (_gtk_window_get_group (NULL), GTK_WINDOW (menu->toplevel));
if (menu->torn_off)
{
gtk_widget_set_size_request (menu->tearoff_window, -1, -1);
if (GTK_BIN (menu->toplevel)->child)
{
gtk_menu_reparent (menu, menu->tearoff_hbox, TRUE);
}
else
{
/* We popped up the menu from the tearoff, so we need to
* release the grab - we aren't actually hiding the menu.
*/
if (menu_shell->have_xgrab)
{
GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (menu));
gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
}
}
/* gtk_menu_popdown is called each time a menu item is selected from
* a torn off menu. Only scroll back to the saved position if the
* non-tearoff menu was popped down.
*/
if (!menu->tearoff_active)
gtk_menu_scroll_to (menu, menu->saved_scroll_offset);
menu->tearoff_active = TRUE;
}
else
gtk_widget_hide (GTK_WIDGET (menu));
menu_shell->have_xgrab = FALSE;
gtk_grab_remove (GTK_WIDGET (menu));
menu_grab_transfer_window_destroy (menu);
}
GtkWidget*
gtk_menu_get_active (GtkMenu *menu)
{
GtkWidget *child;
GList *children;
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
if (!menu->old_active_menu_item)
{
child = NULL;
children = GTK_MENU_SHELL (menu)->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_BIN (child)->child)
break;
child = NULL;
}
menu->old_active_menu_item = child;
if (menu->old_active_menu_item)
g_object_ref (menu->old_active_menu_item);
}
return menu->old_active_menu_item;
}
void
gtk_menu_set_active (GtkMenu *menu,
guint index)
{
GtkWidget *child;
GList *tmp_list;
g_return_if_fail (GTK_IS_MENU (menu));
tmp_list = g_list_nth (GTK_MENU_SHELL (menu)->children, index);
if (tmp_list)
{
child = tmp_list->data;
if (GTK_BIN (child)->child)
{
if (menu->old_active_menu_item)
g_object_unref (menu->old_active_menu_item);
menu->old_active_menu_item = child;
g_object_ref (menu->old_active_menu_item);
}
}
}
void
gtk_menu_set_accel_group (GtkMenu *menu,
GtkAccelGroup *accel_group)
{
g_return_if_fail (GTK_IS_MENU (menu));
if (menu->accel_group != accel_group)
{
if (menu->accel_group)
g_object_unref (menu->accel_group);
menu->accel_group = accel_group;
if (menu->accel_group)
g_object_ref (menu->accel_group);
_gtk_menu_refresh_accel_paths (menu, TRUE);
}
}
GtkAccelGroup*
gtk_menu_get_accel_group (GtkMenu *menu)
{
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
return menu->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: a valid accelerator 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
* <literal>gtk_menu_set_accel_path (menu, "&lt;Gnumeric-Sheet&gt;/File");</literal>
* has been called, assign its items the accel paths:
* <literal>"&lt;Gnumeric-Sheet&gt;/File/New"</literal> and <literal>"&lt;Gnumeric-Sheet&gt;/File/Exit"</literal>.
* 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().
*/
void
gtk_menu_set_accel_path (GtkMenu *menu,
const gchar *accel_path)
{
g_return_if_fail (GTK_IS_MENU (menu));
if (accel_path)
g_return_if_fail (accel_path[0] == '<' && strchr (accel_path, '/')); /* simplistic check */
g_free (menu->accel_path);
menu->accel_path = g_strdup (accel_path);
if (menu->accel_path)
_gtk_menu_refresh_accel_paths (menu, FALSE);
}
typedef struct {
GtkMenu *menu;
gboolean group_changed;
} AccelPropagation;
static void
refresh_accel_paths_foreach (GtkWidget *widget,
gpointer data)
{
AccelPropagation *prop = data;
if (GTK_IS_MENU_ITEM (widget)) /* should always be true */
_gtk_menu_item_refresh_accel_path (GTK_MENU_ITEM (widget),
prop->menu->accel_path,
prop->menu->accel_group,
prop->group_changed);
}
static void
_gtk_menu_refresh_accel_paths (GtkMenu *menu,
gboolean group_changed)
{
g_return_if_fail (GTK_IS_MENU (menu));
if (menu->accel_path && menu->accel_group)
{
AccelPropagation prop;
prop.menu = menu;
prop.group_changed = group_changed;
gtk_container_foreach (GTK_CONTAINER (menu),
refresh_accel_paths_foreach,
&prop);
}
}
void
gtk_menu_reposition (GtkMenu *menu)
{
g_return_if_fail (GTK_IS_MENU (menu));
if (GTK_WIDGET_DRAWABLE (menu) && !menu->torn_off)
gtk_menu_position (menu);
}
static void
gtk_menu_scrollbar_changed (GtkAdjustment *adjustment,
GtkMenu *menu)
{
g_return_if_fail (GTK_IS_MENU (menu));
if (adjustment->value != menu->scroll_offset)
gtk_menu_scroll_to (menu, adjustment->value);
}
static void
gtk_menu_set_tearoff_hints (GtkMenu *menu,
gint width)
{
GdkGeometry geometry_hints;
if (!menu->tearoff_window)
return;
if (GTK_WIDGET_VISIBLE (menu->tearoff_scrollbar))
{
gtk_widget_size_request (menu->tearoff_scrollbar, NULL);
width += menu->tearoff_scrollbar->requisition.width;
}
geometry_hints.min_width = width;
geometry_hints.max_width = width;
geometry_hints.min_height = 0;
geometry_hints.max_height = GTK_WIDGET (menu)->requisition.height;
gtk_window_set_geometry_hints (GTK_WINDOW (menu->tearoff_window),
NULL,
&geometry_hints,
GDK_HINT_MAX_SIZE|GDK_HINT_MIN_SIZE);
}
static void
gtk_menu_update_title (GtkMenu *menu)
{
if (menu->tearoff_window)
{
const gchar *title;
GtkWidget *attach_widget;
title = gtk_menu_get_title (menu);
if (!title)
{
attach_widget = gtk_menu_get_attach_widget (menu);
if (GTK_IS_MENU_ITEM (attach_widget))
{
GtkWidget *child = GTK_BIN (attach_widget)->child;
if (GTK_IS_LABEL (child))
title = gtk_label_get_text (GTK_LABEL (child));
}
}
if (title)
gtk_window_set_title (GTK_WINDOW (menu->tearoff_window), title);
}
}
static GtkWidget*
gtk_menu_get_toplevel (GtkWidget *menu)
{
GtkWidget *attach, *toplevel;
attach = gtk_menu_get_attach_widget (GTK_MENU (menu));
if (GTK_IS_MENU_ITEM (attach))
attach = attach->parent;
if (GTK_IS_MENU (attach))
return gtk_menu_get_toplevel (attach);
else if (GTK_IS_WIDGET (attach))
{
toplevel = gtk_widget_get_toplevel (attach);
if (GTK_WIDGET_TOPLEVEL (toplevel))
return toplevel;
}
return NULL;
}
void
gtk_menu_set_tearoff_state (GtkMenu *menu,
gboolean torn_off)
{
gint width, height;
g_return_if_fail (GTK_IS_MENU (menu));
if (menu->torn_off != torn_off)
{
menu->torn_off = torn_off;
menu->tearoff_active = torn_off;
if (menu->torn_off)
{
if (GTK_WIDGET_VISIBLE (menu))
gtk_menu_popdown (menu);
if (!menu->tearoff_window)
{
GtkWidget *toplevel;
menu->tearoff_window = gtk_widget_new (GTK_TYPE_WINDOW,
"type", GTK_WINDOW_TOPLEVEL,
"screen", gtk_widget_get_screen (menu->toplevel),
"app_paintable", TRUE,
NULL);
gtk_window_set_type_hint (GTK_WINDOW (menu->tearoff_window),
GDK_WINDOW_TYPE_HINT_MENU);
gtk_window_set_mnemonic_modifier (GTK_WINDOW (menu->tearoff_window), 0);
g_signal_connect (menu->tearoff_window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &menu->tearoff_window);
g_signal_connect (menu->tearoff_window, "event",
G_CALLBACK (gtk_menu_window_event), menu);
gtk_menu_update_title (menu);
gtk_widget_realize (menu->tearoff_window);
toplevel = gtk_menu_get_toplevel (GTK_WIDGET (menu));
if (toplevel != NULL)
gtk_window_set_transient_for (GTK_WINDOW (menu->tearoff_window),
GTK_WINDOW (toplevel));
menu->tearoff_hbox = gtk_hbox_new (FALSE, FALSE);
gtk_container_add (GTK_CONTAINER (menu->tearoff_window), menu->tearoff_hbox);
gdk_drawable_get_size (GTK_WIDGET (menu)->window, &width, &height);
menu->tearoff_adjustment =
GTK_ADJUSTMENT (gtk_adjustment_new (0,
0,
GTK_WIDGET (menu)->requisition.height,
MENU_SCROLL_STEP2,
height/2,
height));
g_object_connect (menu->tearoff_adjustment,
"signal::value_changed", gtk_menu_scrollbar_changed, menu,
NULL);
menu->tearoff_scrollbar = gtk_vscrollbar_new (menu->tearoff_adjustment);
gtk_box_pack_end (GTK_BOX (menu->tearoff_hbox),
menu->tearoff_scrollbar,
FALSE, FALSE, 0);
if (menu->tearoff_adjustment->upper > height)
gtk_widget_show (menu->tearoff_scrollbar);
gtk_widget_show (menu->tearoff_hbox);
}
gtk_menu_reparent (menu, menu->tearoff_hbox, FALSE);
gdk_drawable_get_size (GTK_WIDGET (menu)->window, &width, NULL);
/* Update menu->requisition
*/
gtk_widget_size_request (GTK_WIDGET (menu), NULL);
gtk_menu_set_tearoff_hints (menu, width);
gtk_widget_realize (menu->tearoff_window);
gtk_menu_position (menu);
gtk_widget_show (GTK_WIDGET (menu));
gtk_widget_show (menu->tearoff_window);
gtk_menu_scroll_to (menu, 0);
}
else
{
gtk_widget_hide (GTK_WIDGET (menu));
gtk_widget_hide (menu->tearoff_window);
gtk_menu_reparent (menu, menu->toplevel, FALSE);
gtk_widget_destroy (menu->tearoff_window);
menu->tearoff_window = NULL;
menu->tearoff_hbox = NULL;
menu->tearoff_scrollbar = NULL;
menu->tearoff_adjustment = NULL;
}
}
}
/**
* gtk_menu_get_tearoff_state:
* @menu: a #GtkMenu
*
* Returns whether the menu is torn off. See
* gtk_menu_set_tearoff_state ().
*
* Return value: %TRUE if the menu is currently torn off.
**/
gboolean
gtk_menu_get_tearoff_state (GtkMenu *menu)
{
g_return_val_if_fail (GTK_IS_MENU (menu), FALSE);
return menu->torn_off;
}
/**
* gtk_menu_set_title:
* @menu: a #GtkMenu
* @title: a string containing the title for the menu.
*
* Sets the title string for the menu. The title is displayed when the menu
* is shown as a tearoff menu.
**/
void
gtk_menu_set_title (GtkMenu *menu,
const gchar *title)
{
g_return_if_fail (GTK_IS_MENU (menu));
if (title)
g_object_set_data_full (G_OBJECT (menu), "gtk-menu-title",
g_strdup (title), (GtkDestroyNotify) g_free);
else
g_object_set_data (G_OBJECT (menu), "gtk-menu-title", NULL);
gtk_menu_update_title (menu);
g_object_notify (G_OBJECT (menu), "tearoff_title");
}
/**
* gtk_menu_get_title:
* @menu: a #GtkMenu
*
* Returns the title of the menu. See gtk_menu_set_title().
*
* Return value: the title of the menu, or %NULL if the menu has no
* title set on it. This string is owned by the widget and should
* not be modified or freed.
**/
G_CONST_RETURN gchar *
gtk_menu_get_title (GtkMenu *menu)
{
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
return g_object_get_data (G_OBJECT (menu), "gtk-menu-title");
}
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->children, child))
{
menu_shell->children = g_list_remove (menu_shell->children, child);
menu_shell->children = g_list_insert (menu_shell->children, child, position);
menu_queue_resize (menu);
}
}
static void
gtk_menu_style_set (GtkWidget *widget,
GtkStyle *previous_style)
{
if (GTK_WIDGET_REALIZED (widget))
{
GtkMenu *menu = GTK_MENU (widget);
gtk_style_set_background (widget->style, menu->bin_window, GTK_STATE_NORMAL);
gtk_style_set_background (widget->style, menu->view_window, GTK_STATE_NORMAL);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
}
}
static void
gtk_menu_realize (GtkWidget *widget)
{
GdkWindowAttr attributes;
gint attributes_mask;
gint border_width;
GtkMenu *menu;
GtkWidget *child;
GList *children;
guint vertical_padding;
g_return_if_fail (GTK_IS_MENU (widget));
menu = GTK_MENU (widget);
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= (GDK_EXPOSURE_MASK | GDK_KEY_PRESS_MASK |
GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
gdk_window_set_user_data (widget->window, widget);
border_width = GTK_CONTAINER (widget)->border_width;
gtk_widget_style_get (GTK_WIDGET (menu),
"vertical-padding", &vertical_padding,
NULL);
attributes.x = border_width + widget->style->xthickness;
attributes.y = border_width + widget->style->ythickness + vertical_padding;
attributes.width = MAX (1, widget->allocation.width - attributes.x * 2);
attributes.height = MAX (1, widget->allocation.height - attributes.y * 2);
if (menu->upper_arrow_visible)
{
attributes.y += MENU_SCROLL_ARROW_HEIGHT;
attributes.height -= MENU_SCROLL_ARROW_HEIGHT;
}
if (menu->lower_arrow_visible)
attributes.height -= MENU_SCROLL_ARROW_HEIGHT;
menu->view_window = gdk_window_new (widget->window, &attributes, attributes_mask);
gdk_window_set_user_data (menu->view_window, menu);
attributes.x = 0;
attributes.y = 0;
attributes.height = MAX (1, widget->requisition.height - (border_width + widget->style->ythickness + vertical_padding) * 2);
menu->bin_window = gdk_window_new (menu->view_window, &attributes, attributes_mask);
gdk_window_set_user_data (menu->bin_window, menu);
children = GTK_MENU_SHELL (menu)->children;
while (children)
{
child = children->data;
children = children->next;
gtk_widget_set_parent_window (child, menu->bin_window);
}
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, menu->bin_window, GTK_STATE_NORMAL);
gtk_style_set_background (widget->style, menu->view_window, GTK_STATE_NORMAL);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
if (GTK_MENU_SHELL (widget)->active_menu_item)
gtk_menu_scroll_item_visible (GTK_MENU_SHELL (widget),
GTK_MENU_SHELL (widget)->active_menu_item);
gdk_window_show (menu->bin_window);
gdk_window_show (menu->view_window);
}
static gboolean
gtk_menu_focus (GtkWidget *widget,
GtkDirectionType direction)
{
/*
* A menu or its menu items cannot have focus
*/
return FALSE;
}
/* See notes in gtk_menu_popup() for information about the "grab transfer window"
*/
static GdkWindow *
menu_grab_transfer_window_get (GtkMenu *menu)
{
GdkWindow *window = g_object_get_data (G_OBJECT (menu), "gtk-menu-transfer-window");
if (!window)
{
GdkWindowAttr attributes;
gint attributes_mask;
attributes.x = -100;
attributes.y = -100;
attributes.width = 10;
attributes.height = 10;
attributes.window_type = GDK_WINDOW_TEMP;
attributes.wclass = GDK_INPUT_ONLY;
attributes.override_redirect = TRUE;
attributes.event_mask = 0;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_NOREDIR;
window = gdk_window_new (gtk_widget_get_root_window (GTK_WIDGET (menu)),
&attributes, attributes_mask);
gdk_window_set_user_data (window, menu);
gdk_window_show (window);
g_object_set_data (G_OBJECT (menu), "gtk-menu-transfer-window", window);
}
return window;
}
static void
menu_grab_transfer_window_destroy (GtkMenu *menu)
{
GdkWindow *window = g_object_get_data (G_OBJECT (menu), "gtk-menu-transfer-window");
if (window)
{
gdk_window_set_user_data (window, NULL);
gdk_window_destroy (window);
g_object_set_data (G_OBJECT (menu), "gtk-menu-transfer-window", NULL);
}
}
static void
gtk_menu_unrealize (GtkWidget *widget)
{
GtkMenu *menu;
g_return_if_fail (GTK_IS_MENU (widget));
menu = GTK_MENU (widget);
menu_grab_transfer_window_destroy (menu);
gdk_window_set_user_data (menu->view_window, NULL);
gdk_window_destroy (menu->view_window);
menu->view_window = NULL;
gdk_window_set_user_data (menu->bin_window, NULL);
gdk_window_destroy (menu->bin_window);
menu->bin_window = NULL;
(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}
static void
gtk_menu_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
gint i;
GtkMenu *menu;
GtkMenuShell *menu_shell;
GtkWidget *child;
GList *children;
guint max_toggle_size;
guint max_accel_width;
guint vertical_padding;
GtkRequisition child_requisition;
GtkMenuPrivate *priv;
g_return_if_fail (GTK_IS_MENU (widget));
g_return_if_fail (requisition != NULL);
menu = GTK_MENU (widget);
menu_shell = GTK_MENU_SHELL (widget);
priv = gtk_menu_get_private (menu);
requisition->width = 0;
requisition->height = 0;
max_toggle_size = 0;
max_accel_width = 0;
g_free (priv->heights);
priv->heights = g_new0 (guint, gtk_menu_get_n_rows (menu));
priv->heights_length = gtk_menu_get_n_rows (menu);
children = menu_shell->children;
while (children)
{
gint part;
gint toggle_size;
guint l, r, t, b;
child = children->data;
children = children->next;
if (! GTK_WIDGET_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_MENU_ITEM (child)->show_submenu_indicator = TRUE;
gtk_widget_size_request (child, &child_requisition);
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)->accelerator_width);
part = child_requisition.width / (r - l);
requisition->width = MAX (requisition->width, part);
part = MAX (child_requisition.height, toggle_size) / (b - t);
priv->heights[t] = MAX (priv->heights[t], part);
}
for (i = 0; i < gtk_menu_get_n_rows (menu); i++)
requisition->height += priv->heights[i];
requisition->width += max_toggle_size + max_accel_width;
requisition->width *= gtk_menu_get_n_columns (menu);
requisition->width += (GTK_CONTAINER (menu)->border_width +
widget->style->xthickness) * 2;
gtk_widget_style_get (GTK_WIDGET (menu),
"vertical-padding", &vertical_padding,
NULL);
requisition->height += (GTK_CONTAINER (menu)->border_width + vertical_padding +
widget->style->ythickness) * 2;
menu->toggle_size = max_toggle_size;
/* Don't resize the tearoff if it is not active, because it won't redraw (it is only a background pixmap).
*/
if (menu->tearoff_active)
gtk_menu_set_tearoff_hints (menu, requisition->width);
}
static void
gtk_menu_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkMenu *menu;
GtkMenuShell *menu_shell;
GtkWidget *child;
GtkAllocation child_allocation;
GtkRequisition child_requisition;
GtkMenuPrivate *priv;
GList *children;
gint x, y;
gint width, height;
guint vertical_padding;
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 = gtk_menu_get_private (menu);
widget->allocation = *allocation;
gtk_widget_get_child_requisition (GTK_WIDGET (menu), &child_requisition);
gtk_widget_style_get (GTK_WIDGET (menu),
"vertical-padding", &vertical_padding,
NULL);
x = GTK_CONTAINER (menu)->border_width + widget->style->xthickness;
y = GTK_CONTAINER (menu)->border_width + widget->style->ythickness + vertical_padding;
width = MAX (1, allocation->width - x * 2);
height = MAX (1, allocation->height - y * 2);
child_requisition.width -= x * 2;
child_requisition.height -= y * 2;
if (menu_shell->active)
gtk_menu_scroll_to (menu, menu->scroll_offset);
if (menu->upper_arrow_visible && !menu->tearoff_active)
{
y += MENU_SCROLL_ARROW_HEIGHT;
height -= MENU_SCROLL_ARROW_HEIGHT;
}
if (menu->lower_arrow_visible && !menu->tearoff_active)
height -= MENU_SCROLL_ARROW_HEIGHT;
if (GTK_WIDGET_REALIZED (widget))
{
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
gdk_window_move_resize (menu->view_window,
x,
y,
width,
height);
}
if (menu_shell->children)
{
gint base_width = width / gtk_menu_get_n_columns (menu);
children = menu_shell->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child))
{
gint i;
guint 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),
menu->toggle_size);
gtk_widget_size_allocate (child, &child_allocation);
gtk_widget_queue_draw (child);
}
}
/* Resize the item window */
if (GTK_WIDGET_REALIZED (widget))
{
gint i;
gint width, height;
height = 0;
for (i = 0; i < gtk_menu_get_n_rows (menu); i++)
height += priv->heights[i];
width = gtk_menu_get_n_columns (menu) * base_width;
gdk_window_resize (menu->bin_window, width, height);
}
if (menu->tearoff_active)
{
if (allocation->height >= widget->requisition.height)
{
if (GTK_WIDGET_VISIBLE (menu->tearoff_scrollbar))
{
gtk_widget_hide (menu->tearoff_scrollbar);
gtk_menu_set_tearoff_hints (menu, allocation->width);
gtk_menu_scroll_to (menu, 0);
}
}
else
{
menu->tearoff_adjustment->upper = widget->requisition.height;
menu->tearoff_adjustment->page_size = allocation->height;
if (menu->tearoff_adjustment->value + menu->tearoff_adjustment->page_size >
menu->tearoff_adjustment->upper)
{
gint value;
value = menu->tearoff_adjustment->upper - menu->tearoff_adjustment->page_size;
if (value < 0)
value = 0;
gtk_menu_scroll_to (menu, value);
}
gtk_adjustment_changed (menu->tearoff_adjustment);
if (!GTK_WIDGET_VISIBLE (menu->tearoff_scrollbar))
{
gtk_widget_show (menu->tearoff_scrollbar);
gtk_menu_set_tearoff_hints (menu, allocation->width);
}
}
}
}
}
static void
gtk_menu_paint (GtkWidget *widget,
GdkEventExpose *event)
{
GtkMenu *menu;
gint width, height;
gint border_x, border_y;
guint vertical_padding;
g_return_if_fail (GTK_IS_MENU (widget));
menu = GTK_MENU (widget);
gtk_widget_style_get (GTK_WIDGET (menu),
"vertical-padding", &vertical_padding,
NULL);
border_x = GTK_CONTAINER (widget)->border_width + widget->style->xthickness;
border_y = GTK_CONTAINER (widget)->border_width + widget->style->ythickness + vertical_padding;
gdk_drawable_get_size (widget->window, &width, &height);
if (event->window == widget->window)
{
gint arrow_space = MENU_SCROLL_ARROW_HEIGHT - 2 * widget->style->ythickness;
gint arrow_size = 0.7 * arrow_space;
gtk_paint_box (widget->style,
widget->window,
GTK_STATE_NORMAL,
GTK_SHADOW_OUT,
NULL, widget, "menu",
0, 0, -1, -1);
if (menu->upper_arrow_visible && !menu->tearoff_active)
{
gtk_paint_box (widget->style,
widget->window,
menu->upper_arrow_prelight ?
GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
GTK_SHADOW_OUT,
NULL, widget, "menu",
border_x,
border_y,
width - 2 * border_x,
MENU_SCROLL_ARROW_HEIGHT);
gtk_paint_arrow (widget->style,
widget->window,
menu->upper_arrow_prelight ?
GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
GTK_SHADOW_OUT,
NULL, widget, "menu_scroll_arrow_up",
GTK_ARROW_UP,
TRUE,
(width - arrow_size ) / 2,
border_y + widget->style->ythickness + (arrow_space - arrow_size)/2,
arrow_size, arrow_size);
}
if (menu->lower_arrow_visible && !menu->tearoff_active)
{
gtk_paint_box (widget->style,
widget->window,
menu->lower_arrow_prelight ?
GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
GTK_SHADOW_OUT,
NULL, widget, "menu",
border_x,
height - border_y - MENU_SCROLL_ARROW_HEIGHT,
width - 2*border_x,
MENU_SCROLL_ARROW_HEIGHT);
gtk_paint_arrow (widget->style,
widget->window,
menu->lower_arrow_prelight ?
GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
GTK_SHADOW_OUT,
NULL, widget, "menu_scroll_arrow_down",
GTK_ARROW_DOWN,
TRUE,
(width - arrow_size) / 2,
height - border_y - MENU_SCROLL_ARROW_HEIGHT +
widget->style->ythickness + (arrow_space - arrow_size)/2,
arrow_size, arrow_size);
}
}
}
static gboolean
gtk_menu_expose (GtkWidget *widget,
GdkEventExpose *event)
{
g_return_val_if_fail (GTK_IS_MENU (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_menu_paint (widget, event);
(* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
}
return FALSE;
}
static void
gtk_menu_show (GtkWidget *widget)
{
GtkMenu *menu = GTK_MENU (widget);
_gtk_menu_refresh_accel_paths (menu, FALSE);
GTK_WIDGET_CLASS (parent_class)->show (widget);
}
static gboolean
gtk_menu_button_press (GtkWidget *widget,
GdkEventButton *event)
{
/* Don't pop down the menu for releases over scroll arrows
*/
if (GTK_IS_MENU (widget))
{
GtkMenu *menu = GTK_MENU (widget);
if (menu->upper_arrow_prelight || menu->lower_arrow_prelight)
return TRUE;
}
return GTK_WIDGET_CLASS (parent_class)->button_press_event (widget, event);
}
static gboolean
gtk_menu_button_release (GtkWidget *widget,
GdkEventButton *event)
{
/* Don't pop down the menu for releases over scroll arrows
*/
if (GTK_IS_MENU (widget))
{
GtkMenu *menu = GTK_MENU (widget);
if (menu->upper_arrow_prelight || menu->lower_arrow_prelight)
return TRUE;
}
return GTK_WIDGET_CLASS (parent_class)->button_release_event (widget, event);
}
static const gchar *
get_accel_path (GtkWidget *menu_item,
gboolean *locked)
{
const gchar *path;
GtkWidget *label;
GClosure *accel_closure;
GtkAccelGroup *accel_group;
path = _gtk_widget_get_accel_path (menu_item, locked);
if (!path)
{
path = GTK_MENU_ITEM (menu_item)->accel_path;
if (locked)
{
*locked = TRUE;
label = GTK_BIN (menu_item)->child;
if (GTK_IS_ACCEL_LABEL (label))
{
g_object_get (label,
"accel_closure", &accel_closure,
NULL);
accel_group = gtk_accel_group_from_accel_closure (accel_closure);
*locked = accel_group->lock_count > 0;
}
}
}
return path;
}
static gboolean
gtk_menu_key_press (GtkWidget *widget,
GdkEventKey *event)
{
GtkMenuShell *menu_shell;
GtkMenu *menu;
gboolean delete = FALSE;
gboolean can_change_accels;
gchar *accel = NULL;
guint accel_key, accel_mods;
GdkModifierType consumed_modifiers;
GdkDisplay *display;
g_return_val_if_fail (GTK_IS_MENU (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
menu_shell = GTK_MENU_SHELL (widget);
menu = GTK_MENU (widget);
gtk_menu_stop_navigating_submenu (menu);
if (GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event))
return TRUE;
display = gtk_widget_get_display (widget);
g_object_get (gtk_widget_get_settings (widget),
"gtk-menu-bar-accel", &accel,
"gtk-can-change-accels", &can_change_accels,
NULL);
if (accel)
{
guint keyval = 0;
GdkModifierType mods = 0;
gboolean handled = FALSE;
gtk_accelerator_parse (accel, &keyval, &mods);
if (keyval == 0)
g_warning ("Failed to parse menu bar accelerator '%s'\n", accel);
/* FIXME this is wrong, needs to be in the global accel resolution
* thing, to properly consider i18n etc., but that probably requires
* AccelGroup changes etc.
*/
if (event->keyval == keyval &&
(mods & event->state) == mods)
gtk_menu_shell_cancel (menu_shell);
g_free (accel);
if (handled)
return TRUE;
}
switch (event->keyval)
{
case GDK_Delete:
case GDK_KP_Delete:
case GDK_BackSpace:
delete = TRUE;
break;
default:
break;
}
/* Figure out what modifiers went into determining the key symbol */
gdk_keymap_translate_keyboard_state (gdk_keymap_get_for_display (display),
event->hardware_keycode, event->state, event->group,
NULL, NULL, NULL, &consumed_modifiers);
accel_key = gdk_keyval_to_lower (event->keyval);
accel_mods = event->state & gtk_accelerator_get_default_mod_mask () & ~consumed_modifiers;
/* If lowercasing affects the keysym, then we need to include SHIFT in the modifiers,
* We re-upper case when we match against the keyval, but display and save in caseless form.
*/
if (accel_key != event->keyval)
accel_mods |= GDK_SHIFT_MASK;
/* Modify the accelerators */
if (can_change_accels &&
menu_shell->active_menu_item &&
GTK_BIN (menu_shell->active_menu_item)->child && /* no separators */
GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu == NULL && /* no submenus */
(delete || gtk_accelerator_valid (accel_key, accel_mods)))
{
GtkWidget *menu_item = menu_shell->active_menu_item;
gboolean locked, replace_accels = TRUE;
const gchar *path;
path = get_accel_path (menu_item, &locked);
if (!path || locked)
{
/* can't change accelerators on menu_items without paths
* (basically, those items are accelerator-locked).
*/
/* g_print("item has no path or is locked, menu prefix: %s\n", menu->accel_path); */
gdk_display_beep (display);
}
else
{
gboolean changed;
/* For the keys that act to delete the current setting, we delete
* the current setting if there is one, otherwise, we set the
* key as the accelerator.
*/
if (delete)
{
GtkAccelKey key;
if (gtk_accel_map_lookup_entry (path, &key) &&
(key.accel_key || key.accel_mods))
{
accel_key = 0;
accel_mods = 0;
}
}
changed = gtk_accel_map_change_entry (path, accel_key, accel_mods, replace_accels);
if (!changed)
{
/* we failed, probably because this key is in use and
* locked already
*/
/* g_print("failed to change\n"); */
gdk_display_beep (display);
}
}
}
return TRUE;
}
static gboolean
gtk_menu_motion_notify (GtkWidget *widget,
GdkEventMotion *event)
{
GtkWidget *menu_item;
GtkMenu *menu;
GtkMenuShell *menu_shell;
gboolean need_enter;
if (GTK_IS_MENU (widget))
gtk_menu_handle_scrolling (GTK_MENU (widget), 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'.
*/
menu_item = gtk_get_event_widget ((GdkEvent*) event);
if (!menu_item || !GTK_IS_MENU_ITEM (menu_item) ||
!GTK_IS_MENU (menu_item->parent))
return FALSE;
menu_shell = GTK_MENU_SHELL (menu_item->parent);
menu = GTK_MENU (menu_shell);
need_enter = (menu->navigation_region != NULL || menu_shell->ignore_enter);
/* 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 TRUE;
/* 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))
{
gtk_menu_shell_deselect (menu_shell);
return FALSE;
}
if (need_enter)
{
/* The menu is now sensitive to enter events on its items, but
* was previously sensitive. So we fake an enter event.
*/
gint width, height;
menu_shell->ignore_enter = FALSE;
gdk_drawable_get_size (event->window, &width, &height);
if (event->x >= 0 && event->x < width &&
event->y >= 0 && event->y < height)
{
GdkEvent *send_event = gdk_event_new (GDK_ENTER_NOTIFY);
gboolean result;
send_event->crossing.window = g_object_ref (event->window);
send_event->crossing.time = event->time;
send_event->crossing.send_event = TRUE;
send_event->crossing.x_root = event->x_root;
send_event->crossing.y_root = event->y_root;
send_event->crossing.x = event->x;
send_event->crossing.y = event->y;
/* We send the event to 'widget', the currently active menu,
* instead of 'menu', the menu that the pointer is in. This
* will ensure that the event will be ignored unless the
* menuitem is a child of the active menu or some parent
* menu of the active menu.
*/
result = gtk_widget_event (widget, send_event);
gdk_event_free (send_event);
return result;
}
}
return FALSE;
}
static gboolean
gtk_menu_scroll_timeout (gpointer data)
{
GtkMenu *menu;
GtkWidget *widget;
gint offset;
gint view_width, view_height;
GDK_THREADS_ENTER ();
menu = GTK_MENU (data);
widget = GTK_WIDGET (menu);
offset = menu->scroll_offset + menu->scroll_step;
/* If we scroll upward and the non-visible top part
* is smaller than the scroll arrow it would be
* pretty stupid to show the arrow and taking more
* screen space than just scrolling to the top.
*/
if ((menu->scroll_step < 0) && (offset < MENU_SCROLL_ARROW_HEIGHT))
offset = 0;
/* Don't scroll over the top if we weren't before: */
if ((menu->scroll_offset >= 0) && (offset < 0))
offset = 0;
gdk_drawable_get_size (widget->window, &view_width, &view_height);
/* Don't scroll past the bottom if we weren't before: */
if (menu->scroll_offset > 0)
view_height -= MENU_SCROLL_ARROW_HEIGHT;
if ((menu->scroll_offset + view_height <= widget->requisition.height) &&
(offset + view_height > widget->requisition.height))
offset = widget->requisition.height - view_height;
gtk_menu_scroll_to (menu, offset);
GDK_THREADS_LEAVE ();
return TRUE;
}
static void
gtk_menu_handle_scrolling (GtkMenu *menu, gboolean enter)
{
GtkMenuShell *menu_shell;
gint width, height;
gint x, y;
gint border;
GdkRectangle rect;
gboolean in_arrow;
gboolean scroll_fast = FALSE;
guint vertical_padding;
menu_shell = GTK_MENU_SHELL (menu);
gdk_window_get_pointer (GTK_WIDGET (menu)->window, &x, &y, NULL);
gdk_drawable_get_size (GTK_WIDGET (menu)->window, &width, &height);
gtk_widget_style_get (GTK_WIDGET (menu),
"vertical-padding", &vertical_padding,
NULL);
border = GTK_CONTAINER (menu)->border_width +
GTK_WIDGET (menu)->style->ythickness + vertical_padding;
if (menu->upper_arrow_visible && !menu->tearoff_active)
{
rect.x = 0;
rect.y = 0;
rect.width = width;
rect.height = MENU_SCROLL_ARROW_HEIGHT + border;
in_arrow = FALSE;
if ((x >= rect.x) && (x < rect.x + rect.width) &&
(y >= rect.y) && (y < rect.y + rect.height))
{
in_arrow = TRUE;
scroll_fast = (y < rect.y + MENU_SCROLL_FAST_ZONE);
}
if (enter && in_arrow &&
(!menu->upper_arrow_prelight || menu->scroll_fast != scroll_fast))
{
menu->upper_arrow_prelight = TRUE;
menu->scroll_fast = scroll_fast;
gdk_window_invalidate_rect (GTK_WIDGET (menu)->window, &rect, FALSE);
/* Deselect the active item so that any submenus are poped down */
gtk_menu_shell_deselect (menu_shell);
gtk_menu_remove_scroll_timeout (menu);
menu->scroll_step = (scroll_fast) ? -MENU_SCROLL_STEP2 : -MENU_SCROLL_STEP1;
menu->timeout_id = g_timeout_add ((scroll_fast) ? MENU_SCROLL_TIMEOUT2 : MENU_SCROLL_TIMEOUT1,
gtk_menu_scroll_timeout,
menu);
}
else if (!enter && !in_arrow && menu->upper_arrow_prelight)
{
gdk_window_invalidate_rect (GTK_WIDGET (menu)->window, &rect, FALSE);
gtk_menu_stop_scrolling (menu);
}
}
if (menu->lower_arrow_visible && !menu->tearoff_active)
{
rect.x = 0;
rect.y = height - border - MENU_SCROLL_ARROW_HEIGHT;
rect.width = width;
rect.height = MENU_SCROLL_ARROW_HEIGHT + border;
in_arrow = FALSE;
if ((x >= rect.x) && (x < rect.x + rect.width) &&
(y >= rect.y) && (y < rect.y + rect.height))
{
in_arrow = TRUE;
scroll_fast = (y > rect.y + rect.height - MENU_SCROLL_FAST_ZONE);
}
if (enter && in_arrow &&
(!menu->lower_arrow_prelight || menu->scroll_fast != scroll_fast))
{
menu->lower_arrow_prelight = TRUE;
menu->scroll_fast = scroll_fast;
gdk_window_invalidate_rect (GTK_WIDGET (menu)->window, &rect, FALSE);
/* Deselect the active item so that any submenus are poped down */
gtk_menu_shell_deselect (menu_shell);
gtk_menu_remove_scroll_timeout (menu);
menu->scroll_step = (scroll_fast) ? MENU_SCROLL_STEP2 : MENU_SCROLL_STEP1;
menu->timeout_id = g_timeout_add ((scroll_fast) ? MENU_SCROLL_TIMEOUT2 : MENU_SCROLL_TIMEOUT1,
gtk_menu_scroll_timeout,
menu);
}
else if (!enter && !in_arrow && menu->lower_arrow_prelight)
{
gdk_window_invalidate_rect (GTK_WIDGET (menu)->window, &rect, FALSE);
gtk_menu_stop_scrolling (menu);
}
}
}
static gboolean
gtk_menu_enter_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkWidget *menu_item;
if (widget && GTK_IS_MENU (widget))
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget);
if (!menu_shell->ignore_enter)
gtk_menu_handle_scrolling (GTK_MENU (widget), TRUE);
}
/* If this is a faked enter (see gtk_menu_motion_notify), 'widget'
* will not correspond to the event widget's parent. Check to see
* if we are in the parent's navigation region.
*/
menu_item = gtk_get_event_widget ((GdkEvent*) event);
if (menu_item && GTK_IS_MENU_ITEM (menu_item) && GTK_IS_MENU (menu_item->parent) &&
gtk_menu_navigating_submenu (GTK_MENU (menu_item->parent), event->x_root, event->y_root))
return TRUE;
return GTK_WIDGET_CLASS (parent_class)->enter_notify_event (widget, event);
}
static gboolean
gtk_menu_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkMenuShell *menu_shell;
GtkMenu *menu;
GtkMenuItem *menu_item;
GtkWidget *event_widget;
menu = GTK_MENU (widget);
menu_shell = GTK_MENU_SHELL (widget);
if (gtk_menu_navigating_submenu (menu, event->x_root, event->y_root))
return TRUE;
gtk_menu_handle_scrolling (menu, FALSE);
event_widget = gtk_get_event_widget ((GdkEvent*) event);
if (!event_widget || !GTK_IS_MENU_ITEM (event_widget))
return TRUE;
menu_item = GTK_MENU_ITEM (event_widget);
/* Here we check to see if we're leaving an active menu item with a submenu,
* in which case we enter submenu navigation mode.
*/
if (menu_shell->active_menu_item != NULL
&& menu_item->submenu != NULL
&& menu_item->submenu_placement == GTK_LEFT_RIGHT)
{
if (GTK_MENU_SHELL (menu_item->submenu)->active)
{
gtk_menu_set_submenu_navigation_region (menu, menu_item, event);
return TRUE;
}
else if (menu_item == GTK_MENU_ITEM (menu_shell->active_menu_item))
{
/* We are leaving an active menu item with nonactive submenu.
* Deselect it so we don't surprise the user with by popping
* up a submenu _after_ he left the item.
*/
gtk_menu_shell_deselect (menu_shell);
return TRUE;
}
}
return GTK_WIDGET_CLASS (parent_class)->leave_notify_event (widget, event);
}
static void
gtk_menu_stop_navigating_submenu (GtkMenu *menu)
{
if (menu->navigation_region)
{
gdk_region_destroy (menu->navigation_region);
menu->navigation_region = NULL;
}
if (menu->navigation_timeout)
{
g_source_remove (menu->navigation_timeout);
menu->navigation_timeout = 0;
}
}
/* When the timeout is elapsed, the navigation region is destroyed
* and the menuitem under the pointer (if any) is selected.
*/
static gboolean
gtk_menu_stop_navigating_submenu_cb (gpointer user_data)
{
GtkMenu *menu = user_data;
GdkWindow *child_window;
GDK_THREADS_ENTER ();
gtk_menu_stop_navigating_submenu (menu);
if (GTK_WIDGET_REALIZED (menu))
{
child_window = gdk_window_get_pointer (menu->bin_window, NULL, NULL, NULL);
if (child_window)
{
GdkEvent *send_event = gdk_event_new (GDK_ENTER_NOTIFY);
send_event->crossing.window = g_object_ref (child_window);
send_event->crossing.time = GDK_CURRENT_TIME; /* Bogus */
send_event->crossing.send_event = TRUE;
GTK_WIDGET_CLASS (parent_class)->enter_notify_event (GTK_WIDGET (menu), (GdkEventCrossing *)send_event);
gdk_event_free (send_event);
}
}
GDK_THREADS_LEAVE ();
return FALSE;
}
static gboolean
gtk_menu_navigating_submenu (GtkMenu *menu,
gint event_x,
gint event_y)
{
if (menu->navigation_region)
{
if (gdk_region_point_in (menu->navigation_region, event_x, event_y))
return TRUE;
else
{
gtk_menu_stop_navigating_submenu (menu);
return FALSE;
}
}
return FALSE;
}
#undef DRAW_STAY_UP_TRIANGLE
#ifdef DRAW_STAY_UP_TRIANGLE
static void
draw_stay_up_triangle (GdkWindow *window,
GdkRegion *region)
{
/* Draw ugly color all over the stay-up triangle */
GdkColor ugly_color = { 0, 50000, 10000, 10000 };
GdkGCValues gc_values;
GdkGC *ugly_gc;
GdkRectangle clipbox;
gc_values.subwindow_mode = GDK_INCLUDE_INFERIORS;
ugly_gc = gdk_gc_new_with_values (window, &gc_values, 0 | GDK_GC_SUBWINDOW);
gdk_gc_set_rgb_fg_color (ugly_gc, &ugly_color);
gdk_gc_set_clip_region (ugly_gc, region);
gdk_region_get_clipbox (region, &clipbox);
gdk_draw_rectangle (window,
ugly_gc,
TRUE,
clipbox.x, clipbox.y,
clipbox.width, clipbox.height);
g_object_unref (ugly_gc);
}
#endif
static GdkRegion *
flip_region (GdkRegion *region,
gboolean flip_x,
gboolean flip_y)
{
gint n_rectangles;
GdkRectangle *rectangles;
GdkRectangle clipbox;
GdkRegion *new_region;
gint i;
new_region = gdk_region_new ();
gdk_region_get_rectangles (region, &rectangles, &n_rectangles);
gdk_region_get_clipbox (region, &clipbox);
for (i = 0; i < n_rectangles; ++i)
{
GdkRectangle rect = rectangles[i];
if (flip_y)
rect.y -= 2 * (rect.y - clipbox.y) + rect.height;
if (flip_x)
rect.x -= 2 * (rect.x - clipbox.x) + rect.width;
gdk_region_union_with_rect (new_region, &rect);
}
g_free (rectangles);
return new_region;
}
static void
gtk_menu_set_submenu_navigation_region (GtkMenu *menu,
GtkMenuItem *menu_item,
GdkEventCrossing *event)
{
gint submenu_left = 0;
gint submenu_right = 0;
gint submenu_top = 0;
gint submenu_bottom = 0;
gint width = 0;
gint height = 0;
GdkPoint point[3];
GtkWidget *event_widget;
g_return_if_fail (menu_item->submenu != NULL);
g_return_if_fail (event != NULL);
event_widget = gtk_get_event_widget ((GdkEvent*) event);
gdk_window_get_origin (menu_item->submenu->window, &submenu_left, &submenu_top);
gdk_drawable_get_size (menu_item->submenu->window, &width, &height);
submenu_right = submenu_left + width;
submenu_bottom = submenu_top + height;
gdk_drawable_get_size (event_widget->window, &width, &height);
if (event->x >= 0 && event->x < width)
{
gint popdown_delay;
gboolean flip_y = FALSE;
gboolean flip_x = FALSE;
gtk_menu_stop_navigating_submenu (menu);
if (menu_item->submenu_direction == GTK_DIRECTION_RIGHT)
{
/* right */
point[0].x = event->x_root;
point[1].x = submenu_left;
}
else
{
/* left */
point[0].x = event->x_root + 1;
point[1].x = 2 * (event->x_root + 1) - submenu_right;
flip_x = TRUE;
}
if (event->y < 0)
{
/* top */
point[0].y = event->y_root + 1;
point[1].y = 2 * (event->y_root + 1) - submenu_top + NAVIGATION_REGION_OVERSHOOT;
if (point[0].y >= point[1].y - NAVIGATION_REGION_OVERSHOOT)
return;
flip_y = TRUE;
}
else
{
/* bottom */
point[0].y = event->y_root;
point[1].y = submenu_bottom + NAVIGATION_REGION_OVERSHOOT;
if (point[0].y >= submenu_bottom)
return;
}
point[2].x = point[1].x;
point[2].y = point[0].y;
menu->navigation_region = gdk_region_polygon (point, 3, GDK_WINDING_RULE);
if (flip_x || flip_y)
{
GdkRegion *new_region = flip_region (menu->navigation_region, flip_x, flip_y);
gdk_region_destroy (menu->navigation_region);
menu->navigation_region = new_region;
}
g_object_get (gtk_widget_get_settings (GTK_WIDGET (menu)),
"gtk-menu-popdown-delay", &popdown_delay,
NULL);
menu->navigation_timeout = g_timeout_add (popdown_delay,
gtk_menu_stop_navigating_submenu_cb, menu);
#ifdef DRAW_STAY_UP_TRIANGLE
draw_stay_up_triangle (gdk_get_default_root_window(),
menu->navigation_region);
#endif
}
}
static void
gtk_menu_deactivate (GtkMenuShell *menu_shell)
{
GtkWidget *parent;
g_return_if_fail (GTK_IS_MENU (menu_shell));
parent = menu_shell->parent_menu_shell;
menu_shell->activate_time = 0;
gtk_menu_popdown (GTK_MENU (menu_shell));
if (parent)
gtk_menu_shell_deactivate (GTK_MENU_SHELL (parent));
}
static void
gtk_menu_position (GtkMenu *menu)
{
GtkWidget *widget;
GtkRequisition requisition;
GtkMenuPrivate *private;
gint x, y;
gint scroll_offset;
gint menu_height;
gboolean push_in;
GdkScreen *screen;
GdkScreen *pointer_screen;
GdkRectangle monitor;
g_return_if_fail (GTK_IS_MENU (menu));
widget = GTK_WIDGET (menu);
screen = gtk_widget_get_screen (widget);
gdk_display_get_pointer (gdk_screen_get_display (screen),
&pointer_screen, &x, &y, NULL);
/* We need the requisition to figure out the right place to
* popup the menu. In fact, we always need to ask here, since
* if a size_request was queued while we weren't popped up,
* the requisition won't have been recomputed yet.
*/
gtk_widget_size_request (widget, &requisition);
if (pointer_screen != screen)
{
/* Pointer is on a different screen; roughly center the
* menu on the screen. If someone was using multiscreen
* + Xinerama together they'd probably want something
* fancier; but that is likely to be vanishingly rare.
*/
x = MAX (0, (gdk_screen_get_width (screen) - requisition.width) / 2);
y = MAX (0, (gdk_screen_get_height (screen) - requisition.height) / 2);
}
private = gtk_menu_get_private (menu);
private->monitor_num = gdk_screen_get_monitor_at_point (screen, x, y);
push_in = FALSE;
if (menu->position_func)
{
(* menu->position_func) (menu, &x, &y, &push_in, menu->position_func_data);
gdk_screen_get_monitor_geometry (screen, private->monitor_num, &monitor);
}
else
{
gint space_left, space_right, space_above, space_below;
gint needed_width;
gint needed_height;
gint xthickness = widget->style->xthickness;
gint ythickness = widget->style->ythickness;
gboolean rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
/* The placement of popup menus horizontally works like this (with
* RTL in parentheses)
*
* - If there is enough room to the right (left) of the mouse cursor,
* position the menu there.
*
* - Otherwise, if if there is enough room to the left (right) of the
* mouse cursor, position the menu there.
*
* - Otherwise if the menu is smaller than the monitor, position it
* on the side of the mouse cursor that has the most space available
*
* - Otherwise (if there is simply not enough room for the menu on the
* monitor), position it as far left (right) as possible.
*
* Positioning in the vertical direction is similar: first try below
* mouse cursor, then above.
*/
gdk_screen_get_monitor_geometry (screen, private->monitor_num, &monitor);
space_left = x - monitor.x;
space_right = monitor.x + monitor.width - x - 1;
space_above = y - monitor.y;
space_below = monitor.y + monitor.height - y - 1;
/* position horizontally */
/* the amount of space we need to position the menu. Note the
* menu is offset "xthickness" pixels
*/
needed_width = requisition.width - xthickness;
if (needed_width <= space_left ||
needed_width <= space_right)
{
if ((rtl && needed_width <= space_left) ||
(!rtl && needed_width > space_right))
{
/* position left */
x = x + xthickness - requisition.width + 1;
}
else
{
/* position right */
x = x - xthickness;
}
/* x is clamped on-screen further down */
}
else if (requisition.width <= monitor.width)
{
/* the menu is too big to fit on either side of the mouse
* cursor, but smaller than the monitor. Position it on
* the side that has the most space
*/
if (space_left > space_right)
{
/* left justify */
x = monitor.x;
}
else
{
/* right justify */
x = monitor.x + monitor.width - requisition.width;
}
}
else /* menu is simply too big for the monitor */
{
if (rtl)
{
/* right justify */
x = monitor.x + monitor.width - requisition.width;
}
else
{
/* left justify */
x = monitor.x;
}
}
/* Position vertically. The algorithm is the same as above, but
* simpler because we don't have to take RTL into account.
*/
needed_height = requisition.height - ythickness;
if (needed_height <= space_above ||
needed_height <= space_below)
{
if (needed_height <= space_below)
y = y - ythickness;
else
y = y + ythickness - requisition.height + 1;
y = CLAMP (y, monitor.y,
monitor.y + monitor.height - requisition.height);
}
else if (needed_height > space_below && needed_height > space_above)
{
if (space_below >= space_above)
y = monitor.y + monitor.height - requisition.height;
else
y = monitor.y;
}
else
{
y = monitor.y;
}
}
scroll_offset = 0;
if (push_in)
{
menu_height = GTK_WIDGET (menu)->requisition.height;
if (y + menu_height > monitor.y + monitor.height)
{
scroll_offset -= y + menu_height - (monitor.y + monitor.height);
y = (monitor.y + monitor.height) - menu_height;
}
if (y < monitor.y)
{
scroll_offset += monitor.y - y;
y = monitor.y;
}
}
/* FIXME: should this be done in the various position_funcs ? */
x = CLAMP (x, monitor.x, MAX (monitor.x, monitor.x + monitor.width - requisition.width));
if (GTK_MENU_SHELL (menu)->active)
{
private->have_position = TRUE;
private->x = x;
private->y = y;
}
if (y + requisition.height > monitor.y + monitor.height)
requisition.height = (monitor.y + monitor.height) - y;
if (y < monitor.y)
{
scroll_offset += monitor.y - y;
requisition.height -= monitor.y - y;
y = monitor.y;
}
if (scroll_offset > 0)
scroll_offset += MENU_SCROLL_ARROW_HEIGHT;
gtk_window_move (GTK_WINDOW (GTK_MENU_SHELL (menu)->active ? menu->toplevel : menu->tearoff_window),
x, y);
if (!GTK_MENU_SHELL (menu)->active)
{
gtk_window_resize (GTK_WINDOW (menu->tearoff_window),
requisition.width, requisition.height);
}
menu->scroll_offset = scroll_offset;
}
static void
gtk_menu_remove_scroll_timeout (GtkMenu *menu)
{
if (menu->timeout_id)
{
g_source_remove (menu->timeout_id);
menu->timeout_id = 0;
}
}
static void
gtk_menu_stop_scrolling (GtkMenu *menu)
{
gtk_menu_remove_scroll_timeout (menu);
menu->upper_arrow_prelight = FALSE;
menu->lower_arrow_prelight = FALSE;
}
static void
gtk_menu_scroll_to (GtkMenu *menu,
gint offset)
{
GtkWidget *widget;
gint x, y;
gint view_width, view_height;
gint border_width;
gboolean last_visible;
gint menu_height;
guint vertical_padding;
widget = GTK_WIDGET (menu);
if (menu->tearoff_active &&
menu->tearoff_adjustment &&
(menu->tearoff_adjustment->value != offset))
{
menu->tearoff_adjustment->value =
CLAMP (offset,
0, menu->tearoff_adjustment->upper - menu->tearoff_adjustment->page_size);
gtk_adjustment_value_changed (menu->tearoff_adjustment);
}
/* Move/resize the viewport according to arrows: */
view_width = widget->allocation.width;
view_height = widget->allocation.height;
gtk_widget_style_get (GTK_WIDGET (menu),
"vertical-padding", &vertical_padding,
NULL);
border_width = GTK_CONTAINER (menu)->border_width;
view_width -= (border_width + widget->style->xthickness) * 2;
view_height -= (border_width + widget->style->ythickness + vertical_padding) * 2;
menu_height = widget->requisition.height -
(border_width + widget->style->ythickness + vertical_padding) * 2;
x = border_width + widget->style->xthickness;
y = border_width + widget->style->ythickness + vertical_padding;
if (!menu->tearoff_active)
{
last_visible = menu->upper_arrow_visible;
menu->upper_arrow_visible = offset > 0;
if (menu->upper_arrow_visible)
view_height -= MENU_SCROLL_ARROW_HEIGHT;
if ( (last_visible != menu->upper_arrow_visible) &&
!menu->upper_arrow_visible)
{
menu->upper_arrow_prelight = FALSE;
/* If we hid the upper arrow, possibly remove timeout */
if (menu->scroll_step < 0)
{
gtk_menu_stop_scrolling (menu);
gtk_widget_queue_draw (GTK_WIDGET (menu));
}
}
last_visible = menu->lower_arrow_visible;
menu->lower_arrow_visible = offset < menu_height - view_height;
if (menu->lower_arrow_visible)
view_height -= MENU_SCROLL_ARROW_HEIGHT;
if ( (last_visible != menu->lower_arrow_visible) &&
!menu->lower_arrow_visible)
{
menu->lower_arrow_prelight = FALSE;
/* If we hid the lower arrow, possibly remove timeout */
if (menu->scroll_step > 0)
{
gtk_menu_stop_scrolling (menu);
gtk_widget_queue_draw (GTK_WIDGET (menu));
}
}
if (menu->upper_arrow_visible)
y += MENU_SCROLL_ARROW_HEIGHT;
}
/* Scroll the menu: */
if (GTK_WIDGET_REALIZED (menu))
gdk_window_move (menu->bin_window, 0, -offset);
if (GTK_WIDGET_REALIZED (menu))
gdk_window_move_resize (menu->view_window,
x,
y,
view_width,
view_height);
menu->scroll_offset = offset;
}
static gboolean
compute_child_offset (GtkMenu *menu,
GtkWidget *menu_item,
gint *offset,
gint *height,
gboolean *is_last_child)
{
GtkMenuPrivate *priv = gtk_menu_get_private (menu);
guint item_top_attach;
guint 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, it's 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;
gint child_offset, child_height;
gint width, height;
gint y;
gint arrow_height;
gboolean last_child = 0;
menu = GTK_MENU (menu_shell);
/* 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))
{
guint vertical_padding;
y = menu->scroll_offset;
gdk_drawable_get_size (GTK_WIDGET (menu)->window, &width, &height);
gtk_widget_style_get (GTK_WIDGET (menu),
"vertical-padding", &vertical_padding,
NULL);
height -= 2*GTK_CONTAINER (menu)->border_width + 2*GTK_WIDGET (menu)->style->ythickness + 2*vertical_padding;
if (child_offset < y)
{
/* Ignore the enter event we might get if the pointer is on the menu
*/
menu_shell->ignore_enter = TRUE;
gtk_menu_scroll_to (menu, child_offset);
}
else
{
arrow_height = 0;
if (menu->upper_arrow_visible && !menu->tearoff_active)
arrow_height += MENU_SCROLL_ARROW_HEIGHT;
if (menu->lower_arrow_visible && !menu->tearoff_active)
arrow_height += MENU_SCROLL_ARROW_HEIGHT;
if (child_offset + child_height > y + height - arrow_height)
{
arrow_height = 0;
if (!last_child && !menu->tearoff_active)
arrow_height += MENU_SCROLL_ARROW_HEIGHT;
y = child_offset + child_height - height + arrow_height;
if ((y > 0) && !menu->tearoff_active)
{
/* Need upper arrow */
arrow_height += MENU_SCROLL_ARROW_HEIGHT;
y = child_offset + child_height - height + arrow_height;
}
/* Ignore the enter event we might get if the pointer is on the menu
*/
menu_shell->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_REALIZED (GTK_WIDGET (menu)))
gtk_menu_scroll_item_visible (menu_shell, menu_item);
GTK_MENU_SHELL_CLASS (parent_class)->select_item (menu_shell, menu_item);
}
/* Reparent the menu, taking care of the refcounting
*
* If unrealize is true we force a unrealize while reparenting the parent.
* This can help eliminate flicker in some cases.
*
* What happens is that when the menu is unrealized and then re-realized,
* the allocations are as follows:
*
* parent - 1x1 at (0,0)
* child1 - 100x20 at (0,0)
* child2 - 100x20 at (0,20)
* child3 - 100x20 at (0,40)
*
* That is, the parent is small but the children are full sized. Then,
* when the queued_resize gets processed, the parent gets resized to
* full size.
*
* But in order to eliminate flicker when scrolling, gdkgeometry-x11.c
* contains the following logic:
*
* - if a move or resize operation on a window would change the clip
* region on the children, then before the window is resized
* the background for children is temporarily set to None, the
* move/resize done, and the background for the children restored.
*
* So, at the point where the parent is resized to final size, the
* background for the children is temporarily None, and thus they
* are not cleared to the background color and the previous background
* (the image of the menu) is left in place.
*/
static void
gtk_menu_reparent (GtkMenu *menu,
GtkWidget *new_parent,
gboolean unrealize)
{
GtkObject *object = GTK_OBJECT (menu);
GtkWidget *widget = GTK_WIDGET (menu);
gboolean was_floating = GTK_OBJECT_FLOATING (object);
g_object_ref (object);
gtk_object_sink (object);
if (unrealize)
{
g_object_ref (object);
gtk_container_remove (GTK_CONTAINER (widget->parent), widget);
gtk_container_add (GTK_CONTAINER (new_parent), widget);
g_object_unref (object);
}
else
gtk_widget_reparent (GTK_WIDGET (menu), new_parent);
if (was_floating)
GTK_OBJECT_SET_FLAGS (object, GTK_FLOATING);
else
g_object_unref (object);
}
static void
gtk_menu_show_all (GtkWidget *widget)
{
/* Show children, but not self. */
gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_show_all, NULL);
}
static void
gtk_menu_hide_all (GtkWidget *widget)
{
/* Hide children, but not self. */
gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_hide_all, NULL);
}
/**
* gtk_menu_set_screen:
* @menu: a #GtkMenu.
* @screen: a #GdkScreen, or %NULL if the screen should be
* determined by the widget the menu is attached to.
*
* Sets the #GdkScreen on which the menu will be displayed.
*
* Since: 2.2
**/
void
gtk_menu_set_screen (GtkMenu *menu,
GdkScreen *screen)
{
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (!screen || GDK_IS_SCREEN (screen));
g_object_set_data (G_OBJECT (menu), "gtk-menu-explicit-screen", screen);
if (screen)
{
menu_change_screen (menu, screen);
}
else
{
GtkWidget *attach_widget = gtk_menu_get_attach_widget (menu);
if (attach_widget)
attach_widget_screen_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().
*
* Since: 2.4
**/
void
gtk_menu_attach (GtkMenu *menu,
GtkWidget *child,
guint left_attach,
guint right_attach,
guint top_attach,
guint bottom_attach)
{
GtkMenuShell *menu_shell;
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (GTK_IS_MENU_ITEM (child));
g_return_if_fail (child->parent == NULL ||
child->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 (!child->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->children = g_list_append (menu_shell->children, child);
gtk_widget_set_parent (child, GTK_WIDGET (menu));
menu_queue_resize (menu);
}
else
{
gtk_container_child_set (GTK_CONTAINER (child->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)
{
gint popup_delay;
g_object_get (gtk_widget_get_settings (GTK_WIDGET (menu_shell)),
"gtk-menu-popup-delay", &popup_delay,
NULL);
return 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->children; list; list = list->next)
{
guint 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);
/* use special table menu key bindings */
if (menu_shell->active_menu_item && gtk_menu_get_n_columns (menu) > 1)
{
int i;
guint l, r, t, b;
gboolean rtl = (gtk_widget_get_direction (GTK_WIDGET (menu_shell)) == GTK_TEXT_DIR_RTL);
GtkWidget *match = NULL;
get_effective_child_attach (menu_shell->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 ((!rtl && direction == GTK_MENU_DIR_PARENT)
|| (rtl && direction == GTK_MENU_DIR_CHILD))
{
/* 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->parent_menu_shell;
if (!parent
|| g_list_length (GTK_MENU_SHELL (parent)->children) <= 1)
match = menu_shell->active_menu_item;
}
}
else if ((!rtl && direction == GTK_MENU_DIR_CHILD)
|| (rtl && direction == GTK_MENU_DIR_PARENT))
{
/* 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->parent_menu_shell;
if (! GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu &&
(!parent ||
g_list_length (GTK_MENU_SHELL (parent)->children) <= 1))
match = menu_shell->active_menu_item;
}
}
if (match)
{
gtk_menu_shell_select_item (menu_shell, match);
return;
}
}
GTK_MENU_SHELL_CLASS (parent_class)->move_current (menu_shell, direction);
}
static gint
get_visible_size (GtkMenu *menu)
{
GtkWidget *widget = GTK_WIDGET (menu);
GtkContainer *container = GTK_CONTAINER (menu);
gint menu_height = (widget->allocation.height
- 2 * (container->border_width
+ widget->style->ythickness));
if (menu->upper_arrow_visible && !menu->tearoff_active)
menu_height -= MENU_SCROLL_ARROW_HEIGHT;
if (menu->lower_arrow_visible && !menu->tearoff_active)
menu_height -= MENU_SCROLL_ARROW_HEIGHT;
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)
{
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 = menu->scroll_offset;
upper = menu->scroll_offset + menu_height;
for (children = menu_shell->children; children; children = children->next)
{
if (GTK_WIDGET_VISIBLE (children->data))
{
GtkRequisition child_requisition;
gtk_widget_size_request (children->data, &child_requisition);
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 &&
!GTK_IS_TEAROFF_MENU_ITEM (child))
return child;
}
child_offset += child_requisition.height;
}
}
return child;
}
static gint
get_menu_height (GtkMenu *menu)
{
gint height;
GtkWidget *widget = GTK_WIDGET (menu);
height = widget->requisition.height;
height -= (GTK_CONTAINER (widget)->border_width + widget->style->ythickness) * 2;
if (menu->upper_arrow_visible && !menu->tearoff_active)
height -= MENU_SCROLL_ARROW_HEIGHT;
if (menu->lower_arrow_visible && !menu->tearoff_active)
height -= MENU_SCROLL_ARROW_HEIGHT;
return height;
}
static void
gtk_menu_real_move_scroll (GtkMenu *menu,
GtkScrollType type)
{
gint page_size = get_visible_size (menu);
gint end_position = get_menu_height (menu);
GtkMenuShell *menu_shell = GTK_MENU_SHELL (menu);
switch (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->active_menu_item)
{
gint child_height;
compute_child_offset (menu, menu_shell->active_menu_item,
&child_offset, &child_height, NULL);
child_offset += child_height / 2;
}
menu_shell->ignore_enter = TRUE;
old_upper_arrow_visible = menu->upper_arrow_visible && !menu->tearoff_active;
old_offset = menu->scroll_offset;
new_offset = menu->scroll_offset + step;
new_offset = CLAMP (new_offset, 0, end_position - page_size);
gtk_menu_scroll_to (menu, new_offset);
if (menu_shell->active_menu_item)
{
GtkWidget *new_child;
gboolean new_upper_arrow_visible = menu->upper_arrow_visible && !menu->tearoff_active;
if (menu->scroll_offset != old_offset)
step = menu->scroll_offset - old_offset;
step -= (new_upper_arrow_visible - old_upper_arrow_visible) * MENU_SCROLL_ARROW_HEIGHT;
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->ignore_enter = TRUE;
gtk_menu_scroll_to (menu, 0);
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->ignore_enter = TRUE;
gtk_menu_scroll_to (menu, end_position - page_size);
_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_screen_get_monitor_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.
*
* Since: 2.4
**/
void
gtk_menu_set_monitor (GtkMenu *menu,
gint monitor_num)
{
GtkMenuPrivate *priv;
g_return_if_fail (GTK_IS_MENU (menu));
priv = gtk_menu_get_private (menu);
priv->monitor_num = monitor_num;
}
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