gdkdisplay.c 56.5 KB
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/* GDK - The GIMP Drawing Kit
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 * gdkdisplay.c
 * 
 * Copyright 2001 Sun Microsystems Inc. 
 *
 * Erwann Chenede <erwann.chenede@sun.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
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 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
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 */

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#include "config.h"
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#include "gdkdisplay.h"
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#include "gdkdisplayprivate.h"
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#include "gdkdeviceprivate.h"
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#include "gdkevents.h"
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#include "gdkwindowimpl.h"
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#include "gdkinternals.h"
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#include "gdkmarshalers.h"
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#include "gdkscreen.h"
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#include <glib.h>
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/**
 * SECTION:gdkdisplay
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 * @Short_description: Controls a set of GdkScreens and their associated input devices
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 * @Title: GdkDisplay
 *
 * #GdkDisplay objects purpose are two fold:
 * <itemizedlist>
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 * <listitem>
 *   To manage and provide information about input devices (pointers
 *   and keyboards)
 * </listitem>
 * <listitem>
 *   To manage and provide information about the available #GdkScreens
 * </listitem>
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 * </itemizedlist>
 *
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 * GdkDisplay objects are the GDK representation of an X Display,
 * which can be described as <emphasis>a workstation consisting of
 * a keyboard, a pointing device (such as a mouse) and one or more
 * screens</emphasis>.
 * It is used to open and keep track of various GdkScreen objects
 * currently instantiated by the application. It is also used to
 * access the keyboard(s) and mouse pointer(s) of the display.
 *
 * Most of the input device handling has been factored out into
 * the separate #GdkDeviceManager object. Every display has a
 * device manager, which you can obtain using
 * gdk_display_get_device_manager().
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 */


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enum {
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  OPENED,
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  CLOSED,
  LAST_SIGNAL
};

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static void gdk_display_dispose     (GObject         *object);
static void gdk_display_finalize    (GObject         *object);

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static GdkAppLaunchContext *gdk_display_real_get_app_launch_context (GdkDisplay *display);
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static guint signals[LAST_SIGNAL] = { 0 };

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G_DEFINE_TYPE (GdkDisplay, gdk_display, G_TYPE_OBJECT)
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static void
gdk_display_class_init (GdkDisplayClass *class)
{
  GObjectClass *object_class = G_OBJECT_CLASS (class);
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  object_class->finalize = gdk_display_finalize;
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  object_class->dispose = gdk_display_dispose;
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  class->get_app_launch_context = gdk_display_real_get_app_launch_context;
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  class->window_type = GDK_TYPE_WINDOW;
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  /**
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   * GdkDisplay::opened:
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   * @display: the object on which the signal is emitted
   *
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   * The ::opened signal is emitted when the connection to the windowing
   * system for @display is opened.
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   */
  signals[OPENED] =
    g_signal_new (g_intern_static_string ("opened"),
		  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  0, NULL, NULL,
                  g_cclosure_marshal_VOID__VOID,
                  G_TYPE_NONE, 0);

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  /**
   * GdkDisplay::closed:
   * @display: the object on which the signal is emitted
   * @is_error: %TRUE if the display was closed due to an error
   *
   * The ::closed signal is emitted when the connection to the windowing
   * system for @display is closed.
   *
   * Since: 2.2
   */   
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  signals[CLOSED] =
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    g_signal_new (g_intern_static_string ("closed"),
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		  G_OBJECT_CLASS_TYPE (object_class),
		  G_SIGNAL_RUN_LAST,
		  G_STRUCT_OFFSET (GdkDisplayClass, closed),
		  NULL, NULL,
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		  _gdk_marshal_VOID__BOOLEAN,
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		  G_TYPE_NONE,
		  1,
		  G_TYPE_BOOLEAN);
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}

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static void
free_pointer_info (GdkPointerWindowInfo *info)
{
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  if (info->toplevel_under_pointer)
    g_object_unref (info->toplevel_under_pointer);
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  g_slice_free (GdkPointerWindowInfo, info);
}

static void
free_device_grab (GdkDeviceGrabInfo *info)
{
  g_object_unref (info->window);
  g_object_unref (info->native_window);
  g_free (info);
}

static gboolean
free_device_grabs_foreach (gpointer key,
                           gpointer value,
                           gpointer user_data)
{
  GList *list = value;

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  g_list_free_full (list, (GDestroyNotify) free_device_grab);
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  return TRUE;
}

static void
device_removed_cb (GdkDeviceManager *device_manager,
                   GdkDevice        *device,
                   GdkDisplay       *display)
{
  g_hash_table_remove (display->multiple_click_info, device);
  g_hash_table_remove (display->device_grabs, device);
  g_hash_table_remove (display->pointers_info, device);

  /* FIXME: change core pointer and remove from device list */
}

static void
gdk_display_opened (GdkDisplay *display)
{
  GdkDeviceManager *device_manager;

  device_manager = gdk_display_get_device_manager (display);

  g_signal_connect (device_manager, "device-removed",
                    G_CALLBACK (device_removed_cb), display);
}

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static void
gdk_display_init (GdkDisplay *display)
{
  display->double_click_time = 250;
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  display->double_click_distance = 5;
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  display->device_grabs = g_hash_table_new (NULL, NULL);
  display->motion_hint_info = g_hash_table_new_full (NULL, NULL, NULL,
                                                     (GDestroyNotify) g_free);

  display->pointers_info = g_hash_table_new_full (NULL, NULL, NULL,
                                                  (GDestroyNotify) free_pointer_info);

  display->multiple_click_info = g_hash_table_new_full (NULL, NULL, NULL,
                                                        (GDestroyNotify) g_free);

  g_signal_connect (display, "opened",
                    G_CALLBACK (gdk_display_opened), NULL);
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}

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static void
gdk_display_dispose (GObject *object)
{
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  GdkDisplay *display = GDK_DISPLAY (object);
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  GdkDeviceManager *device_manager;

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  device_manager = gdk_display_get_device_manager (GDK_DISPLAY (object));
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  g_list_free_full (display->queued_events, (GDestroyNotify) gdk_event_free);
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  display->queued_events = NULL;
  display->queued_tail = NULL;

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  if (device_manager)
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    {
      /* this is to make it drop devices which may require using the X
       * display and therefore can't be cleaned up in finalize.
       * It will also disconnect device_removed_cb
       */
      g_object_run_dispose (G_OBJECT (display->device_manager));
    }
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  G_OBJECT_CLASS (gdk_display_parent_class)->dispose (object);
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}

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static void
gdk_display_finalize (GObject *object)
{
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  GdkDisplay *display = GDK_DISPLAY (object);
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  g_hash_table_foreach_remove (display->device_grabs,
                               free_device_grabs_foreach,
                               NULL);
  g_hash_table_destroy (display->device_grabs);

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  g_hash_table_destroy (display->motion_hint_info);
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  g_hash_table_destroy (display->pointers_info);
  g_hash_table_destroy (display->multiple_click_info);

  if (display->device_manager)
    g_object_unref (display->device_manager);

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  G_OBJECT_CLASS (gdk_display_parent_class)->finalize (object);
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}

/**
 * gdk_display_close:
 * @display: a #GdkDisplay
 *
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 * Closes the connection to the windowing system for the given display,
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 * and cleans up associated resources.
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 *
 * Since: 2.2
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 */
void
gdk_display_close (GdkDisplay *display)
{
  g_return_if_fail (GDK_IS_DISPLAY (display));
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  if (!display->closed)
    {
      display->closed = TRUE;
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      g_signal_emit (display, signals[CLOSED], 0, FALSE);
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      g_object_run_dispose (G_OBJECT (display));
      
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      g_object_unref (display);
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    }
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}

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/**
 * gdk_display_is_closed:
 * @display: a #GdkDisplay
 *
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 * Finds out if the display has been closed.
 *
 * Returns: %TRUE if the display is closed.
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 *
 * Since: 2.22
 */
gboolean
gdk_display_is_closed  (GdkDisplay  *display)
{
  g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);

  return display->closed;
}

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/**
 * gdk_display_get_event:
 * @display: a #GdkDisplay
 * 
 * Gets the next #GdkEvent to be processed for @display, fetching events from the
 * windowing system if necessary.
 * 
 * Return value: the next #GdkEvent to be processed, or %NULL if no events
 * are pending. The returned #GdkEvent should be freed with gdk_event_free().
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 *
 * Since: 2.2
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 **/
GdkEvent*
gdk_display_get_event (GdkDisplay *display)
{
  g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
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  GDK_DISPLAY_GET_CLASS (display)->queue_events (display);
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  return _gdk_event_unqueue (display);
}

/**
 * gdk_display_peek_event:
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 * @display: a #GdkDisplay 
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 * 
 * Gets a copy of the first #GdkEvent in the @display's event queue, without
 * removing the event from the queue.  (Note that this function will
 * not get more events from the windowing system.  It only checks the events
 * that have already been moved to the GDK event queue.)
 * 
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 * Return value: a copy of the first #GdkEvent on the event queue, or %NULL 
 * if no events are in the queue. The returned #GdkEvent should be freed with
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 * gdk_event_free().
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 *
 * Since: 2.2
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 **/
GdkEvent*
gdk_display_peek_event (GdkDisplay *display)
{
  GList *tmp_list;

  g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);

  tmp_list = _gdk_event_queue_find_first (display);
  
  if (tmp_list)
    return gdk_event_copy (tmp_list->data);
  else
    return NULL;
}

/**
 * gdk_display_put_event:
 * @display: a #GdkDisplay
 * @event: a #GdkEvent.
 *
 * Appends a copy of the given event onto the front of the event
 * queue for @display.
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 *
 * Since: 2.2
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 **/
void
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gdk_display_put_event (GdkDisplay     *display,
		       const GdkEvent *event)
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{
  g_return_if_fail (GDK_IS_DISPLAY (display));
  g_return_if_fail (event != NULL);

  _gdk_event_queue_append (display, gdk_event_copy (event));
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  /* If the main loop is blocking in a different thread, wake it up */
  g_main_context_wakeup (NULL); 
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}
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/**
 * gdk_display_pointer_ungrab:
 * @display: a #GdkDisplay.
 * @time_: a timestap (e.g. %GDK_CURRENT_TIME).
 *
 * Release any pointer grab.
 *
 * Since: 2.2
 *
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 * Deprecated: 3.0: Use gdk_device_ungrab(), together with gdk_device_grab()
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 *             instead.
 */
void
gdk_display_pointer_ungrab (GdkDisplay *display,
			    guint32     time_)
{
  GdkDeviceManager *device_manager;
  GList *devices, *dev;
  GdkDevice *device;

  g_return_if_fail (GDK_IS_DISPLAY (display));

  device_manager = gdk_display_get_device_manager (display);
  devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);

  /* FIXME: Should this be generic to all backends? */
  /* FIXME: What happens with extended devices? */
  for (dev = devices; dev; dev = dev->next)
    {
      device = dev->data;

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      if (gdk_device_get_source (device) != GDK_SOURCE_MOUSE)
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        continue;

      gdk_device_ungrab (device, time_);
    }

  g_list_free (devices);
}

/**
 * gdk_display_keyboard_ungrab:
 * @display: a #GdkDisplay.
 * @time_: a timestap (e.g #GDK_CURRENT_TIME).
 *
 * Release any keyboard grab
 *
 * Since: 2.2
 *
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 * Deprecated: 3.0: Use gdk_device_ungrab(), together with gdk_device_grab()
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 *             instead.
 */
void
gdk_display_keyboard_ungrab (GdkDisplay *display,
			     guint32     time)
{
  GdkDeviceManager *device_manager;
  GList *devices, *dev;
  GdkDevice *device;

  g_return_if_fail (GDK_IS_DISPLAY (display));

  device_manager = gdk_display_get_device_manager (display);
  devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);

  /* FIXME: Should this be generic to all backends? */
  /* FIXME: What happens with extended devices? */
  for (dev = devices; dev; dev = dev->next)
    {
      device = dev->data;

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      if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD)
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        continue;

      gdk_device_ungrab (device, time);
    }

  g_list_free (devices);
}

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/**
 * gdk_beep:
 * 
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 * Emits a short beep on the default display.
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 **/
void
gdk_beep (void)
{
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  gdk_display_beep (gdk_display_get_default ());
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}

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/**
 * gdk_flush:
 *
 * Flushes the output buffers of all display connections and waits
 * until all requests have been processed.
 * This is rarely needed by applications.
 */
void
gdk_flush (void)
{
  GSList *list, *l;

  list = gdk_display_manager_list_displays (gdk_display_manager_get ());
  for (l = list; l; l = l->next)
    {
      GdkDisplay *display = l->data;

      GDK_DISPLAY_GET_CLASS (display)->sync (display);
    }

  g_slist_free (list);
}

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void
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_gdk_display_enable_motion_hints (GdkDisplay *display,
                                  GdkDevice  *device)
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{
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  gulong *device_serial, serial;

  device_serial = g_hash_table_lookup (display->motion_hint_info, device);

  if (!device_serial)
    {
      device_serial = g_new0 (gulong, 1);
      *device_serial = G_MAXULONG;
      g_hash_table_insert (display->motion_hint_info, device, device_serial);
    }

  if (*device_serial != 0)
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    {
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      serial = _gdk_display_get_next_serial (display);
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      /* We might not actually generate the next request, so
	 make sure this triggers always, this may cause it to
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	 trigger slightly too early, but this is just a hint
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	 anyway. */
      if (serial > 0)
	serial--;
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      if (serial < *device_serial)
	*device_serial = serial;
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    }
}

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/**
 * gdk_display_get_pointer:
 * @display: a #GdkDisplay
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 * @screen: (out) (allow-none) (transfer none): location to store the screen that the
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 *          cursor is on, or %NULL.
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 * @x: (out) (allow-none): location to store root window X coordinate of pointer, or %NULL.
 * @y: (out) (allow-none): location to store root window Y coordinate of pointer, or %NULL.
 * @mask: (out) (allow-none): location to store current modifier mask, or %NULL
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 *
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 * Gets the current location of the pointer and the current modifier
 * mask for a given display.
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 *
 * Since: 2.2
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 *
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 * Deprecated: 3.0: Use gdk_device_get_position() instead.
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 **/
void
gdk_display_get_pointer (GdkDisplay      *display,
			 GdkScreen      **screen,
			 gint            *x,
			 gint            *y,
			 GdkModifierType *mask)
{
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  GdkScreen *default_screen;
  GdkWindow *root;
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  gint tmp_x, tmp_y;
  GdkModifierType tmp_mask;

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  g_return_if_fail (GDK_IS_DISPLAY (display));

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  if (gdk_display_is_closed (display))
    return;

  default_screen = gdk_display_get_default_screen (display);

  /* We call _gdk_device_query_state() here manually instead of
   * gdk_device_get_position() because we care about the modifier mask */

  _gdk_device_query_state (display->core_pointer,
                           gdk_screen_get_root_window (default_screen),
                           &root, NULL,
                           &tmp_x, &tmp_y,
                           NULL, NULL,
                           &tmp_mask);
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  if (screen)
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    *screen = gdk_window_get_screen (root);
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  if (x)
    *x = tmp_x;
  if (y)
    *y = tmp_y;
  if (mask)
    *mask = tmp_mask;
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}

/**
 * gdk_display_get_window_at_pointer:
 * @display: a #GdkDisplay
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 * @win_x: (out) (allow-none): return location for x coordinate of the pointer location relative
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 *    to the window origin, or %NULL
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 * @win_y: (out) (allow-none): return location for y coordinate of the pointer location relative
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 &    to the window origin, or %NULL
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 *
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 * Obtains the window underneath the mouse pointer, returning the location
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 * of the pointer in that window in @win_x, @win_y for @screen. Returns %NULL
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 * if the window under the mouse pointer is not known to GDK (for example, 
 * belongs to another application).
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 *
 * Returns: (transfer none): the window under the mouse pointer, or %NULL
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 *
 * Since: 2.2
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 *
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 * Deprecated: 3.0: Use gdk_device_get_window_at_position() instead.
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 **/
GdkWindow *
gdk_display_get_window_at_pointer (GdkDisplay *display,
				   gint       *win_x,
				   gint       *win_y)
{
  g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
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  return gdk_device_get_window_at_position (display->core_pointer, win_x, win_y);
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}
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static void
generate_grab_broken_event (GdkWindow *window,
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                            GdkDevice *device,
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			    gboolean   implicit,
			    GdkWindow *grab_window)
{
  g_return_if_fail (window != NULL);

  if (!GDK_WINDOW_DESTROYED (window))
    {
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      GdkEvent *event;

      event = gdk_event_new (GDK_GRAB_BROKEN);
      event->grab_broken.window = g_object_ref (window);
      event->grab_broken.send_event = FALSE;
      event->grab_broken.implicit = implicit;
      event->grab_broken.grab_window = grab_window;
      gdk_event_set_device (event, device);
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      event->grab_broken.keyboard = (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD) ? TRUE : FALSE;
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      gdk_event_put (event);
      gdk_event_free (event);
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    }
}

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GdkDeviceGrabInfo *
_gdk_display_get_last_device_grab (GdkDisplay *display,
                                   GdkDevice  *device)
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{
  GList *l;

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  l = g_hash_table_lookup (display->device_grabs, device);
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  if (l)
    {
      l = g_list_last (l);
      return l->data;
    }
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  return NULL;
}
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GdkDeviceGrabInfo *
_gdk_display_add_device_grab (GdkDisplay       *display,
                              GdkDevice        *device,
                              GdkWindow        *window,
                              GdkWindow        *native_window,
                              GdkGrabOwnership  grab_ownership,
                              gboolean          owner_events,
                              GdkEventMask      event_mask,
                              unsigned long     serial_start,
                              guint32           time,
                              gboolean          implicit)
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{
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  GdkDeviceGrabInfo *info, *other_info;
  GList *grabs, *l;
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  info = g_new0 (GdkDeviceGrabInfo, 1);
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  info->window = g_object_ref (window);
  info->native_window = g_object_ref (native_window);
  info->serial_start = serial_start;
  info->serial_end = G_MAXULONG;
  info->owner_events = owner_events;
  info->event_mask = event_mask;
  info->time = time;
  info->implicit = implicit;
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  info->ownership = grab_ownership;

  grabs = g_hash_table_lookup (display->device_grabs, device);
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  /* Find the first grab that has a larger start time (if any) and insert
   * before that. I.E we insert after already existing grabs with same
   * start time */
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  for (l = grabs; l != NULL; l = l->next)
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    {
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      other_info = l->data;
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      if (info->serial_start < other_info->serial_start)
	break;
    }
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  grabs = g_list_insert_before (grabs, l, info);
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  /* Make sure the new grab end before next grab */
  if (l)
    {
      other_info = l->data;
      info->serial_end = other_info->serial_start;
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    }
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  /* Find any previous grab and update its end time */
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  l = g_list_find (grabs, info);
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  l = l->prev;
  if (l)
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    {
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      other_info = l->data;
      other_info->serial_end = serial_start;
    }

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  g_hash_table_insert (display->device_grabs, device, grabs);
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  return info;
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}

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/* _gdk_synthesize_crossing_events only works inside one toplevel.
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   This function splits things into two calls if needed, converting the
   coordinates to the right toplevel */
static void
699 700
synthesize_crossing_events (GdkDisplay      *display,
                            GdkDevice       *device,
701
                            GdkDevice       *source_device,
702 703 704 705 706
			    GdkWindow       *src_window,
			    GdkWindow       *dest_window,
			    GdkCrossingMode  crossing_mode,
			    guint32          time,
			    gulong           serial)
707 708 709 710
{
  GdkWindow *src_toplevel, *dest_toplevel;
  GdkModifierType state;
  int x, y;
711

712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727
  if (src_window)
    src_toplevel = gdk_window_get_toplevel (src_window);
  else
    src_toplevel = NULL;
  if (dest_window)
    dest_toplevel = gdk_window_get_toplevel (dest_window);
  else
    dest_toplevel = NULL;

  if (src_toplevel == NULL && dest_toplevel == NULL)
    return;
  
  if (src_toplevel == NULL ||
      src_toplevel == dest_toplevel)
    {
      /* Same toplevels */
728 729 730
      gdk_window_get_device_position (dest_toplevel,
                                      device,
			              &x, &y, &state);
731
      _gdk_synthesize_crossing_events (display,
732 733
				       src_window,
				       dest_window,
734
                                       device, source_device,
735 736 737 738 739
				       crossing_mode,
				       x, y, state,
				       time,
				       NULL,
				       serial, FALSE);
740 741 742
    }
  else if (dest_toplevel == NULL)
    {
743 744 745
      gdk_window_get_device_position (src_toplevel,
                                      device,
			              &x, &y, &state);
746
      _gdk_synthesize_crossing_events (display,
747 748
                                       src_window,
                                       NULL,
749
                                       device, source_device,
750 751 752 753 754
                                       crossing_mode,
                                       x, y, state,
                                       time,
                                       NULL,
                                       serial, FALSE);
755 756 757 758
    }
  else
    {
      /* Different toplevels */
759 760 761
      gdk_window_get_device_position (src_toplevel,
                                      device,
			              &x, &y, &state);
762
      _gdk_synthesize_crossing_events (display,
763 764
				       src_window,
				       NULL,
765
                                       device, source_device,
766 767 768 769 770
				       crossing_mode,
				       x, y, state,
				       time,
				       NULL,
				       serial, FALSE);
771 772 773
      gdk_window_get_device_position (dest_toplevel,
                                      device,
			              &x, &y, &state);
774
      _gdk_synthesize_crossing_events (display,
775 776
				       NULL,
				       dest_window,
777
                                       device, source_device,
778 779 780 781 782
				       crossing_mode,
				       x, y, state,
				       time,
				       NULL,
				       serial, FALSE);
783 784
    }
}
785

786
static GdkWindow *
787 788 789 790
get_current_toplevel (GdkDisplay      *display,
                      GdkDevice       *device,
                      int             *x_out,
                      int             *y_out,
791 792 793 794 795 796
		      GdkModifierType *state_out)
{
  GdkWindow *pointer_window;
  int x, y;
  GdkModifierType state;

797
  pointer_window = _gdk_device_window_at_position (device, &x, &y, &state, TRUE);
798

799 800 801 802 803 804 805 806 807
  if (pointer_window != NULL &&
      (GDK_WINDOW_DESTROYED (pointer_window) ||
       GDK_WINDOW_TYPE (pointer_window) == GDK_WINDOW_ROOT ||
       GDK_WINDOW_TYPE (pointer_window) == GDK_WINDOW_FOREIGN))
    pointer_window = NULL;

  *x_out = x;
  *y_out = y;
  *state_out = state;
808

809
  return pointer_window;
810 811
}

812
static void
813 814
switch_to_pointer_grab (GdkDisplay        *display,
                        GdkDevice         *device,
815
                        GdkDevice         *source_device,
816 817 818 819
			GdkDeviceGrabInfo *grab,
			GdkDeviceGrabInfo *last_grab,
			guint32            time,
			gulong             serial)
820
{
821
  GdkWindow *src_window, *pointer_window, *new_toplevel;
822
  GdkPointerWindowInfo *info;
823 824
  GList *old_grabs;
  GdkModifierType state;
825
  int x = 0, y = 0;
826 827

  /* Temporarily unset pointer to make sure we send the crossing events below */
828 829 830 831
  old_grabs = g_hash_table_lookup (display->device_grabs, device);
  g_hash_table_steal (display->device_grabs, device);
  info = _gdk_display_get_pointer_info (display, device);

832 833 834
  if (grab)
    {
      /* New grab is in effect */
835

836 837 838
      /* We need to generate crossing events for the grab.
       * However, there are never any crossing events for implicit grabs
       * TODO: ... Actually, this could happen if the pointer window
839
       *           doesn't have button mask so a parent gets the event...
840 841
       */
      if (!grab->implicit)
842
	{
843 844 845 846
	  /* We send GRAB crossing events from the window under the pointer to the
	     grab window. Except if there is an old grab then we start from that */
	  if (last_grab)
	    src_window = last_grab->window;
847
	  else
848 849
	    src_window = info->window_under_pointer;

850
	  if (src_window != grab->window)
851
            synthesize_crossing_events (display, device, source_device,
852 853
                                        src_window, grab->window,
                                        GDK_CROSSING_GRAB, time, serial);
854

855 856
	  /* !owner_event Grabbing a window that we're not inside, current status is
	     now NULL (i.e. outside grabbed window) */
857 858
	  if (!grab->owner_events && info->window_under_pointer != grab->window)
	    _gdk_display_set_window_under_pointer (display, device, NULL);
859
	}
860

861 862
      grab->activated = TRUE;
    }
863 864

  if (last_grab)
865
    {
866 867 868 869 870 871 872 873
      new_toplevel = NULL;

      if (grab == NULL /* ungrab */ ||
	  (!last_grab->owner_events && grab->owner_events) /* switched to owner_events */ )
	{
	  /* We force check what window we're in, and update the toplevel_under_pointer info,
	   * as that won't get told of this change with toplevel enter events.
	   */
874 875 876
	  if (info->toplevel_under_pointer)
	    g_object_unref (info->toplevel_under_pointer);
	  info->toplevel_under_pointer = NULL;
877

878 879 880 881 882 883 884 885
          /* Ungrabbed slave devices don't have a position by
           * itself, rather depend on its master pointer, so
           * it doesn't make sense to track any position for
           * these after the grab
           */
          if (grab || gdk_device_get_device_type (device) != GDK_DEVICE_TYPE_SLAVE)
            new_toplevel = get_current_toplevel (display, device, &x, &y, &state);

886 887 888
	  if (new_toplevel)
	    {
	      /* w is now toplevel and x,y in toplevel coords */
889 890 891 892
	      info->toplevel_under_pointer = g_object_ref (new_toplevel);
	      info->toplevel_x = x;
	      info->toplevel_y = y;
	      info->state = state;
893 894 895 896
	    }
	}

      if (grab == NULL) /* Ungrabbed, send events */
897
	{
898 899
	  pointer_window = NULL;
	  if (new_toplevel)
900
	    {
901 902 903 904 905
	      /* Find (possibly virtual) child window */
	      pointer_window =
		_gdk_window_find_descendant_at (new_toplevel,
						x, y,
						NULL, NULL);
906
	    }
907

908
	  if (pointer_window != last_grab->window)
909
            synthesize_crossing_events (display, device, source_device,
910 911 912
                                        last_grab->window, pointer_window,
                                        GDK_CROSSING_UNGRAB, time, serial);

913
	  /* We're now ungrabbed, update the window_under_pointer */
914
	  _gdk_display_set_window_under_pointer (display, device, pointer_window);
915
	}
916 917
    }

918
  g_hash_table_insert (display->device_grabs, device, old_grabs);
919 920 921
}

void
922 923
_gdk_display_device_grab_update (GdkDisplay *display,
                                 GdkDevice  *device,
924
                                 GdkDevice  *source_device,
925
                                 gulong      current_serial)
926
{
927 928
  GdkDeviceGrabInfo *current_grab, *next_grab;
  GList *grabs;
929
  guint32 time;
930

931
  time = display->last_event_time;
932
  grabs = g_hash_table_lookup (display->device_grabs, device);
933

934
  while (grabs != NULL)
935
    {
936
      current_grab = grabs->data;
937

938 939
      if (current_grab->serial_start > current_serial)
	return; /* Hasn't started yet */
940

941
      if (current_grab->serial_end > current_serial)
942 943 944
	{
	  /* This one hasn't ended yet.
	     its the currently active one or scheduled to be active */
945

946
	  if (!current_grab->activated)
947
            {
948
              if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD)
949
                switch_to_pointer_grab (display, device, source_device, current_grab, NULL, time, current_serial);
950 951
            }

952 953 954 955
	  break;
	}

      next_grab = NULL;
956
      if (grabs->next)
957
	{
958
	  /* This is the next active grab */
959 960
	  next_grab = grabs->next->data;

961 962
	  if (next_grab->serial_start > current_serial)
	    next_grab = NULL; /* Actually its not yet active */
963 964
	}

965 966
      if ((next_grab == NULL && current_grab->implicit_ungrab) ||
	  (next_grab != NULL && current_grab->window != next_grab->window))
967
	generate_grab_broken_event (GDK_WINDOW (current_grab->window),
968 969
                                    device,
				    current_grab->implicit,
970
				    next_grab? next_grab->window : NULL);
971

972
      /* Remove old grab */
973 974 975
      grabs = g_list_delete_link (grabs, grabs);
      g_hash_table_insert (display->device_grabs, device, grabs);

976
      if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD)
977
        switch_to_pointer_grab (display, device, source_device,
978 979 980 981
                                next_grab, current_grab,
                                time, current_serial);

      free_device_grab (current_grab);
982
    }
983 984 985
}

static GList *
986 987
grab_list_find (GList  *grabs,
                gulong  serial)
988
{
989
  GdkDeviceGrabInfo *grab;
990

991
  while (grabs)
992
    {
993
      grab = grabs->data;
994

995
      if (serial >= grab->serial_start && serial < grab->serial_end)
996 997 998
	return grabs;

      grabs = grabs->next;
999
    }
1000

1001 1002 1003
  return NULL;
}

1004 1005 1006 1007 1008 1009
static GList *
find_device_grab (GdkDisplay *display,
                   GdkDevice  *device,
                   gulong      serial)
{
  GList *l;
1010

1011 1012 1013
  l = g_hash_table_lookup (display->device_grabs, device);
  return grab_list_find (l, serial);
}
1014

1015 1016 1017 1018
GdkDeviceGrabInfo *
_gdk_display_has_device_grab (GdkDisplay *display,
                              GdkDevice  *device,
                              gulong      serial)
1019 1020 1021
{
  GList *l;

1022
  l = find_device_grab (display, device, serial);
1023 1024
  if (l)
    return l->data;
1025

1026 1027 1028
  return NULL;
}

1029 1030 1031
/* Returns true if last grab was ended
 * If if_child is non-NULL, end the grab only if the grabbed
 * window is the same as if_child or a descendant of it */
1032
gboolean
1033 1034 1035 1036 1037
_gdk_display_end_device_grab (GdkDisplay *display,
                              GdkDevice  *device,
                              gulong      serial,
                              GdkWindow  *if_child,
                              gboolean    implicit)
1038
{
1039
  GdkDeviceGrabInfo *grab;
1040 1041
  GList *l;

1042 1043
  l = find_device_grab (display, device, serial);

1044 1045 1046 1047 1048 1049
  if (l == NULL)
    return FALSE;

  grab = l->data;
  if (grab &&
      (if_child == NULL ||
1050
       _gdk_window_event_parent_of (if_child, grab->window)))
1051 1052 1053 1054 1055 1056 1057
    {
      grab->serial_end = serial;
      grab->implicit_ungrab = implicit;
      return l->next == NULL;
    }
  
  return FALSE;
1058 1059
}

1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072
/* Returns TRUE if device events are not blocked by any grab */
gboolean
_gdk_display_check_grab_ownership (GdkDisplay *display,
                                   GdkDevice  *device,
                                   gulong      serial)
{
  GHashTableIter iter;
  gpointer key, value;
  GdkGrabOwnership higher_ownership, device_ownership;
  gboolean device_is_keyboard;

  g_hash_table_iter_init (&iter, display->device_grabs);
  higher_ownership = device_ownership = GDK_OWNERSHIP_NONE;
1073
  device_is_keyboard = (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD);
1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088

  while (g_hash_table_iter_next (&iter, &key, &value))
    {
      GdkDeviceGrabInfo *grab;
      GdkDevice *dev;
      GList *grabs;

      dev = key;
      grabs = value;
      grabs = grab_list_find (grabs, serial);

      if (!grabs)
        continue;

      /* Discard device if it's not of the same type */
1089 1090
      if ((device_is_keyboard && gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD) ||
          (!device_is_keyboard && gdk_device_get_source (dev) == GDK_SOURCE_KEYBOARD))
1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112
        continue;

      grab = grabs->data;

      if (dev == device)
        device_ownership = grab->ownership;
      else
        {
          if (grab->ownership > higher_ownership)
            higher_ownership = grab->ownership;
        }
    }

  if (higher_ownership > device_ownership)
    {
      /* There's a higher priority ownership
       * going on for other device(s)
       */
      return FALSE;
    }

  return TRUE;
1113 1114
}

1115 1116 1117
GdkPointerWindowInfo *
_gdk_display_get_pointer_info (GdkDisplay *display,
                               GdkDevice  *device)
1118
{
1119 1120
  GdkPointerWindowInfo *info;

1121 1122 1123
  if (device && gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
    device = gdk_device_get_associated_device (device);

1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135
  if (G_UNLIKELY (!device))
    return NULL;

  info = g_hash_table_lookup (display->pointers_info, device);

  if (G_UNLIKELY (!info))
    {
      info = g_slice_new0 (GdkPointerWindowInfo);
      g_hash_table_insert (display->pointers_info, device, info);
    }

  return info;
1136 1137
}

1138 1139 1140 1141
void
_gdk_display_pointer_info_foreach (GdkDisplay                   *display,
                                   GdkDisplayPointerInfoForeach  func,
                                   gpointer                      user_data)
1142
{
1143 1144
  GHashTableIter iter;
  gpointer key, value;
1145

1146 1147 1148
  g_hash_table_iter_init (&iter, display->pointers_info);

  while (g_hash_table_iter_next (&iter, &key, &value))
1149
    {
1150 1151
      GdkPointerWindowInfo *info = value;
      GdkDevice *device = key;
1152

1153
      (func) (display, device, info, user_data);
1154 1155
    }
}
1156 1157

/**
1158 1159 1160
 * gdk_device_grab_info_libgtk_only:
 * @display: the display for which to get the grab information
 * @device: device to get the grab information from
1161 1162
 * @grab_window: (out) (transfer none): location to store current grab window
 * @owner_events: (out): location to store boolean indicating whether
1163 1164 1165 1166
 *   the @owner_events flag to gdk_keyboard_grab() or
 *   gdk_pointer_grab() was %TRUE.
 *
 * Determines information about the current keyboard grab.
1167
 * This is not public API and must not be used by applications.
1168
 *
1169
 * Return value: %TRUE if this application currently has the
1170
 *  keyboard grabbed.
1171 1172
 **/
gboolean
1173 1174 1175 1176
gdk_device_grab_info_libgtk_only (GdkDisplay  *display,
                                  GdkDevice   *device,
                                  GdkWindow  **grab_window,
                                  gboolean    *owner_events)
1177
{
1178 1179
  GdkDeviceGrabInfo *info;

1180
  g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
1181 1182 1183
  g_return_val_if_fail (GDK_IS_DEVICE (device), FALSE);

  info = _gdk_display_get_last_device_grab (display, device);
1184

1185
  if (info)
1186 1187
    {
      if (grab_window)
1188
        *grab_window = info->window;
1189
      if (owner_events)
1190
        *owner_events = info->owner_events;
1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206

      return TRUE;
    }
  else
    return FALSE;
}

/**
 * gdk_display_pointer_is_grabbed:
 * @display: a #GdkDisplay
 *
 * Test if the pointer is grabbed.
 *
 * Returns: %TRUE if an active X pointer grab is in effect
 *
 * Since: 2.2
1207
 *
1208
 * Deprecated: 3.0: Use gdk_display_device_is_grabbed() instead.
1209 1210 1211 1212
 */
gboolean
gdk_display_pointer_is_grabbed (GdkDisplay *display)
{
1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225
  GdkDeviceManager *device_manager;
  GList *devices, *dev;
  GdkDevice *device;

  g_return_val_if_fail (GDK_IS_DISPLAY (display), TRUE);

  device_manager = gdk_display_get_device_manager (display);
  devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);

  for (dev = devices; dev; dev = dev->next)
    {
      device = dev->data;

1226
      if (gdk_device_get_source (device) == GDK_SOURCE_MOUSE &&
1227
          gdk_display_device_is_grabbed (display, device))
1228 1229 1230 1231
        {
          g_list_free (devices);
          return TRUE;
        }
1232 1233
    }

1234 1235
  g_list_free (devices);

1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253
  return FALSE;
}

/**
 * gdk_display_device_is_grabbed:
 * @display: a #GdkDisplay
 * @device: a #GdkDevice
 *
 * Returns %TRUE if there is an ongoing grab on @device for @display.
 *
 * Returns: %TRUE if there is a grab in effect for @device.
 **/
gboolean
gdk_display_device_is_grabbed (GdkDisplay *display,
                               GdkDevice  *device)
{
  GdkDeviceGrabInfo *info;

1254
  g_return_val_if_fail (GDK_IS_DISPLAY (display), TRUE);
1255
  g_return_val_if_fail (GDK_IS_DEVICE (device), TRUE);
1256

1257 1258 1259
  /* What we're interested in is the steady state (ie last grab),
     because we're interested e.g. if we grabbed so that we
     can ungrab, even if our grab is not active just yet. */
1260 1261
  info = _gdk_display_get_last_device_grab (display, device);

1262
  return (info && !info->implicit);
1263 1264
}

1265 1266 1267 1268 1269 1270
/**
 * gdk_display_get_device_manager:
 * @display: a #GdkDisplay.
 *
 * Returns the #GdkDeviceManager associated to @display.
 *
1271
 * Returns: (transfer none): A #GdkDeviceManager, or %NULL. This memory is
1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282
 *          owned by GDK and must not be freed or unreferenced.
 *
 * Since: 3.0
 **/
GdkDeviceManager *
gdk_display_get_device_manager (GdkDisplay *display)
{
  g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);

  return display->device_manager;
}
1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294

/**
 * gdk_display_get_name:
 * @display: a #GdkDisplay
 *
 * Gets the name of the display.
 *
 * Returns: a string representing the display name. This string is owned
 * by GDK and should not be modified or freed.
 *
 * Since: 2.2
 */
1295
const gchar *
1296 1297
gdk_display_get_name (GdkDisplay *display)
{
1298 1299 1300
  g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);

  return GDK_DISPLAY_GET_CLASS (display)->get_name (display);
1301 1302
}

1303 1304 1305 1306 1307 1308
gchar *
gdk_get_display (void)
{
  return g_strdup (gdk_display_get_name (gdk_display_get_default ()));
}

1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321
/**
 * gdk_display_get_n_screens:
 * @display: a #GdkDisplay
 *
 * Gets the number of screen managed by the @display.
 *
 * Returns: number of screens.
 *
 * Since: 2.2
 */
gint
gdk_display_get_n_screens (GdkDisplay *display)
{
1322 1323 1324
  g_return_val_if_fail (GDK_IS_DISPLAY (display), 0);

  return GDK_DISPLAY_GET_CLASS (display)->get_n_screens (display);
1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341
}

/**
 * gdk_display_get_screen:
 * @display: a #GdkDisplay
 * @screen_num: the screen number
 *
 * Returns a screen object for one of the screens of the display.
 *
 * Returns: (transfer none): the #GdkScreen object
 *
 * Since: 2.2
 */
GdkScreen *
gdk_display_get_screen (GdkDisplay *display,
			gint        screen_num)
{
1342 1343 1344
  g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);

  return GDK_DISPLAY_GET_CLASS (display)->get_screen (display, screen_num);
1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359
}

/**
 * gdk_display_get_default_screen:
 * @display: a #GdkDisplay
 *
 * Get the default #GdkScreen for @display.
 *
 * Returns: (transfer none): the default #GdkScreen object for @display
 *
 * Since: 2.2
 */
GdkScreen *
gdk_display_get_default_screen (GdkDisplay *display)
{
1360 1361 1362
  g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);

  return GDK_DISPLAY_GET_CLASS (display)->get_default_screen (display);
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}

/**
 * gdk_display_beep:
 * @display: a #GdkDisplay
 *
 * Emits a short beep on @display
 *
 * Since: 2.2
 */
void
gdk_display_beep (GdkDisplay *display)
{
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  g_return_if_fail (GDK_IS_DISPLAY (display));

  GDK_DISPLAY_GET_CLASS (display)->beep (display);
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}

/**
 * gdk_display_sync:
 * @display: a #GdkDisplay
 *
 * Flushes any requests queued for the windowing system and waits until all
 * requests have been handled. This is often used for making sure that the
 * display is synchronized with the current state of the program. Calling
 * gdk_display_sync() before gdk_error_trap_pop() makes sure that any errors
 * generated from earlier requests are handled before the error trap is
 * removed.
 *
 * This is most useful for X11. On windowing systems where requests are
 * handled synchronously, this function will do nothing.
 *
 * Since: 2.2
 */
void
gdk_display_sync (GdkDisplay *display)
{
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  g_return_if_fail (GDK_IS_DISPLAY (display));

  GDK_DISPLAY_GET_CLASS (display)->sync (display);
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}

/**
 * gdk_display_flush:
 * @display: a #GdkDisplay
 *
 * Flushes any requests queued for the windowing system; this happens automatically
 * when the main loop blocks waiting for new events, but if your application
 * is drawing without returning control to the main loop, you may need
 * to call this function explicitely. A common case where this function
 * needs to be called is when an application is executing drawing commands
 * from a thread other than the thread where the main loop is running.
 *
 * This is most useful for X11. On windowing systems where requests are
 * handled synchronously, this function will do nothing.
 *
 * Since: 2.4
 */
void
gdk_display_flush (GdkDisplay *display)
{
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  g_return_if_fail (GDK_IS_DISPLAY (display));

  GDK_DISPLAY_GET_CLASS (display)->flush (display);
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}

/**
 * gdk_display_get_default_group:
 * @display: a #GdkDisplay
 *
 * Returns the default group leader window for all toplevel windows
 * on @display. This window is implicitly created by GDK.
 * See gdk_window_set_group().
 *
 * Return value: (transfer none): The default group leader window
 * for @display
 *
 * Since: 2.4
 **/
GdkWindow *
gdk_display_get_default_group (GdkDisplay *display)
{
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  g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);

  return GDK_DISPLAY_GET_CLASS (display)->get_default_group (display);
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}

/**
 * gdk_display_supports_selection_notification:
 * @display: a #GdkDisplay
 *
 * Returns whether #GdkEventOwnerChange events will be
 * sent when the owner of a selection changes.
 *
 * Return value: whether #GdkEventOwnerChange events will
 *               be sent.
 *
 * Since: 2.6
 **/
gboolean
gdk_display_supports_selection_notification (GdkDisplay *display)
{
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  g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);

  return GDK_DISPLAY_GET_CLASS (display)->supports_selection_notification (display);
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}

/**
 * gdk_display_request_selection_notification:
 * @display: a #GdkDisplay
 * @selection: the #GdkAtom naming the selection for which
 *             ownership change notification is requested
 *
 * Request #GdkEventOwnerChange events for ownership changes
 * of the selection named by the given atom.
 *
 * Return value: whether #GdkEventOwnerChange events will
 *               be sent.
 *
 * Since: 2.6
 **/
gboolean
gdk_display_request_selection_notification (GdkDisplay *display,
					    GdkAtom     selection)

{
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  g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);

  return GDK_DISPLAY_GET_CLASS (display)->request_selection_notification (display, selection);
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}

/**
 * gdk_display_supports_clipboard_persistence
 * @display: a #GdkDisplay
 *
 * Returns whether the speicifed display supports clipboard
 * persistance; i.e. if it's possible to store the clipboard data after an
 * application has quit. On X11 this checks if a clipboard daemon is
 * running.
 *
 * Returns: %TRUE if the display supports clipboard persistance.
 *
 * Since: 2.6
 */
gboolean
gdk_display_supports_clipboard_persistence (GdkDisplay *display)
{
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  g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);

  return GDK_DISPLAY_GET_CLASS (display)->supports_clipboard_persistence (display);
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}

/**
 * gdk_display_store_clipboard
 * @display:          a #GdkDisplay
 * @clipboard_window: a #GdkWindow belonging to the clipboard owner
 * @time_:            a timestamp
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 * @targets:          (array length=n_targets): an array of targets
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 *                    that should be saved, or %NULL
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 *                    if all available targets should be saved.
 * @n_targets:        length of the @targets array
 *
 * Issues a request to the clipboard manager to store the
 * clipboard data. On X11, this is a special program that works
 * according to the freedesktop clipboard specification, available at
 * <ulink url="http://www.freedesktop.org/Standards/clipboard-manager-spec">
 * http://www.freedesktop.org/Standards/clipboard-manager-spec</ulink>.
 *
 * Since: 2.6
 */
void
gdk_display_store_clipboard (GdkDisplay    *display,
			     GdkWindow     *clipboard_window,
			     guint32        time_,
			     const GdkAtom *targets,
			     gint           n_targets)
{
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  g_return_if_fail (GDK_IS_DISPLAY (display));

  GDK_DISPLAY_GET_CLASS (display)->store_clipboard (display, clipboard_window, time_, targets, n_targets);
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}

/**
 * gdk_display_supports_shapes:
 * @display: a #GdkDisplay
 *
 * Returns %TRUE if gdk_window_shape_combine_mask() can
 * be used to create shaped windows on @display.
 *
 * Returns: %TRUE if shaped windows are supported
 *
 * Since: 2.10
 */
gboolean
gdk_display_supports_shapes (GdkDisplay *display)
{
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  g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);

  return GDK_DISPLAY_GET_CLASS (display)->supports_shapes (display);
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}

/**
 * gdk_display_supports_input_shapes:
 * @display: a #GdkDisplay
 *
 * Returns %TRUE if gdk_window_input_shape_combine_mask() can
 * be used to modify the input shape of windows on @display.
 *
 * Returns: %TRUE if windows with modified input shape are supported
 *
 * Since: 2.10
 */
gboolean
gdk_display_supports_input_shapes (GdkDisplay *display)
{
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  g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);

  return GDK_DISPLAY_GET_CLASS (display)->supports_input_shapes (display);
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}

/**
 * gdk_display_supports_composite:
 * @display: a #GdkDisplay
 *
 * Returns %TRUE if gdk_window_set_composited() can be used
 * to redirect drawing on the window using compositing.
 *
 * Currently this only works on X11 with XComposite and
 * XDamage extensions available.
 *
 * Returns: %TRUE if windows may be composited.
 *
 * Since: 2.12
 */
gboolean
gdk_display_supports_composite (GdkDisplay *display)
{
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  g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);

  return GDK_DISPLAY_GET_CLASS (display)->supports_composite (display);
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}

/**
 * gdk_display_list_devices:
 * @display: a #GdkDisplay
 *
 * Returns the list of available input devices attached to @display.
 * The list is statically allocated and should not be freed.
 *
 * Return value: (transfer none) (element-type GdkDevice):
 *     a list of #GdkDevice
 *
 * Since: 2.2
 *
 * Deprecated: 3.0: Use gdk_device_manager_list_devices() instead.
 **/
GList *
gdk_display_list_devices (GdkDisplay *display)
{
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  g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);

  return GDK_DISPLAY_GET_CLASS (display)->list_devices (display);
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}

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static GdkAppLaunchContext *
gdk_display_real_get_app_launch_context (GdkDisplay *display)
{
  GdkAppLaunchContext *ctx;

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  ctx = g_object_new (GDK_TYPE_APP_LAUNCH_CONTEXT,
                      "display", display,
                      NULL);
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