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gtk2/gdk/gdkdisplay.c

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/* GDK - The GIMP Drawing Kit
* 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
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "gdkdisplay.h"
#include "gdkdisplayprivate.h"
#include "gdkevents.h"
#include "gdkwindowimpl.h"
#include "gdkinternals.h"
#include "gdkmarshalers.h"
#include "gdkscreen.h"
#include <glib.h>
#include <math.h>
/**
* SECTION:gdkdisplay
* @Short_description: Controls the keyboard/mouse pointer grabs and a set of <type>GdkScreen</type>s
* @Title: GdkDisplay
*
* #GdkDisplay objects purpose are two fold:
* <itemizedlist>
* <listitem><para>
* To grab/ungrab keyboard focus and mouse pointer
* </para></listitem>
* <listitem><para>
* To manage and provide information about the #GdkScreen(s)
* available for this #GdkDisplay
* </para></listitem>
* </itemizedlist>
*
* #GdkDisplay objects are the GDK representation of the 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
* instanciated by the application. It is also used to grab and release the keyboard
* and the mouse pointer.
*/
enum {
OPENED,
CLOSED,
LAST_SIGNAL
};
static void gdk_display_dispose (GObject *object);
static void gdk_display_finalize (GObject *object);
static void multihead_get_device_state (GdkDisplay *display,
GdkDevice *device,
GdkScreen **screen,
gint *x,
gint *y,
GdkModifierType *mask);
static GdkWindow * multihead_window_get_device_position (GdkDisplay *display,
GdkDevice *device,
GdkWindow *window,
gint *x,
gint *y,
GdkModifierType *mask);
static GdkWindow * multihead_window_at_device_position (GdkDisplay *display,
GdkDevice *device,
gint *win_x,
gint *win_y);
static void multihead_default_get_pointer (GdkDisplay *display,
GdkScreen **screen,
gint *x,
gint *y,
GdkModifierType *mask);
static GdkWindow * multihead_default_window_get_pointer (GdkDisplay *display,
GdkWindow *window,
gint *x,
gint *y,
GdkModifierType *mask);
static GdkWindow * multihead_default_window_at_pointer (GdkDisplay *display,
gint *win_x,
gint *win_y);
static void singlehead_get_pointer (GdkDisplay *display,
GdkScreen **screen,
gint *x,
gint *y,
GdkModifierType *mask);
static GdkWindow* singlehead_window_get_pointer (GdkDisplay *display,
GdkWindow *window,
gint *x,
gint *y,
GdkModifierType *mask);
static GdkWindow* singlehead_window_at_pointer (GdkDisplay *display,
gint *win_x,
gint *win_y);
static GdkWindow* singlehead_default_window_get_pointer (GdkWindow *window,
gint *x,
gint *y,
GdkModifierType *mask);
static GdkWindow* singlehead_default_window_at_pointer (GdkScreen *screen,
gint *win_x,
gint *win_y);static GdkWindow *gdk_window_real_window_get_device_position (GdkDisplay *display,
GdkDevice *device,
GdkWindow *window,
gint *x,
gint *y,
GdkModifierType *mask);
static GdkWindow *gdk_display_real_get_window_at_device_position (GdkDisplay *display,
GdkDevice *device,
gint *win_x,
gint *win_y);
static GdkAppLaunchContext *gdk_display_real_get_app_launch_context (GdkDisplay *display);
static guint signals[LAST_SIGNAL] = { 0 };
static char *gdk_sm_client_id;
static const GdkDisplayDeviceHooks default_device_hooks = {
_gdk_windowing_get_device_state,
gdk_window_real_window_get_device_position,
gdk_display_real_get_window_at_device_position
};
static const GdkDisplayDeviceHooks multihead_pointer_hooks = {
multihead_get_device_state,
multihead_window_get_device_position,
multihead_window_at_device_position
};
static const GdkDisplayPointerHooks multihead_default_pointer_hooks = {
multihead_default_get_pointer,
multihead_default_window_get_pointer,
multihead_default_window_at_pointer
};
static const GdkDisplayPointerHooks singlehead_pointer_hooks = {
singlehead_get_pointer,
singlehead_window_get_pointer,
singlehead_window_at_pointer
};
static const GdkPointerHooks singlehead_default_pointer_hooks = {
singlehead_default_window_get_pointer,
singlehead_default_window_at_pointer
};
static const GdkPointerHooks *singlehead_current_pointer_hooks = &singlehead_default_pointer_hooks;
static const GdkDisplayPointerHooks *multihead_current_pointer_hooks = &multihead_default_pointer_hooks;
G_DEFINE_TYPE (GdkDisplay, gdk_display, G_TYPE_OBJECT)
static void
gdk_display_class_init (GdkDisplayClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->finalize = gdk_display_finalize;
object_class->dispose = gdk_display_dispose;
class->get_app_launch_context = gdk_display_real_get_app_launch_context;
/**
* GdkDisplay::opened:
* @display: the object on which the signal is emitted
*
* The ::opened signal is emitted when the connection to the windowing
* system for @display is opened.
*/
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);
/**
* 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
*/
signals[CLOSED] =
g_signal_new (g_intern_static_string ("closed"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GdkDisplayClass, closed),
NULL, NULL,
_gdk_marshal_VOID__BOOLEAN,
G_TYPE_NONE,
1,
G_TYPE_BOOLEAN);
}
static void
free_pointer_info (GdkPointerWindowInfo *info)
{
g_object_unref (info->toplevel_under_pointer);
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;
g_list_foreach (list, (GFunc) free_device_grab, NULL);
g_list_free (list);
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);
}
static void
gdk_display_init (GdkDisplay *display)
{
display->double_click_time = 250;
display->double_click_distance = 5;
display->device_hooks = &default_device_hooks;
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);
}
static void
gdk_display_dispose (GObject *object)
{
GdkDisplay *display = GDK_DISPLAY_OBJECT (object);
GdkDeviceManager *device_manager;
device_manager = gdk_display_get_device_manager (GDK_DISPLAY_OBJECT (object));
g_list_foreach (display->queued_events, (GFunc)gdk_event_free, NULL);
g_list_free (display->queued_events);
display->queued_events = NULL;
display->queued_tail = NULL;
if (device_manager)
{
/* 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));
}
G_OBJECT_CLASS (gdk_display_parent_class)->dispose (object);
}
static void
gdk_display_finalize (GObject *object)
{
GdkDisplay *display = GDK_DISPLAY_OBJECT (object);
g_hash_table_foreach_remove (display->device_grabs,
free_device_grabs_foreach,
NULL);
g_hash_table_destroy (display->device_grabs);
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);
G_OBJECT_CLASS (gdk_display_parent_class)->finalize (object);
}
/**
* gdk_display_close:
* @display: a #GdkDisplay
*
* Closes the connection to the windowing system for the given display,
* and cleans up associated resources.
*
* Since: 2.2
*/
void
gdk_display_close (GdkDisplay *display)
{
g_return_if_fail (GDK_IS_DISPLAY (display));
if (!display->closed)
{
display->closed = TRUE;
g_signal_emit (display, signals[CLOSED], 0, FALSE);
g_object_run_dispose (G_OBJECT (display));
g_object_unref (display);
}
}
/**
* gdk_display_is_closed:
* @display: a #GdkDisplay
*
* Finds out if the display has been closed.
*
* Returns: %TRUE if the display is closed.
*
* Since: 2.22
*/
gboolean
gdk_display_is_closed (GdkDisplay *display)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
return display->closed;
}
/**
* 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().
*
* Since: 2.2
**/
GdkEvent*
gdk_display_get_event (GdkDisplay *display)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
GDK_DISPLAY_GET_CLASS (display)->queue_events (display);
return _gdk_event_unqueue (display);
}
/**
* gdk_display_peek_event:
* @display: a #GdkDisplay
*
* 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.)
*
* 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
* gdk_event_free().
*
* Since: 2.2
**/
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.
*
* Since: 2.2
**/
void
gdk_display_put_event (GdkDisplay *display,
const GdkEvent *event)
{
g_return_if_fail (GDK_IS_DISPLAY (display));
g_return_if_fail (event != NULL);
_gdk_event_queue_append (display, gdk_event_copy (event));
/* If the main loop is blocking in a different thread, wake it up */
g_main_context_wakeup (NULL);
}
/**
* gdk_display_pointer_ungrab:
* @display: a #GdkDisplay.
* @time_: a timestap (e.g. %GDK_CURRENT_TIME).
*
* Release any pointer grab.
*
* Since: 2.2
*
* Deprecated: 3.0: Use gdk_device_ungrab(), together with gdk_device_grab()
* 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;
if (gdk_device_get_source (device) != GDK_SOURCE_MOUSE)
continue;
gdk_device_ungrab (device, time_);
}
g_list_free (devices);
}
/**
* gdk_pointer_ungrab:
* @time_: a timestamp from a #GdkEvent, or %GDK_CURRENT_TIME if no
* timestamp is available.
*
* Ungrabs the pointer on the default display, if it is grabbed by this
* application.
*
* Deprecated: 3.0: Use gdk_device_ungrab(), together with gdk_device_grab()
* instead.
**/
void
gdk_pointer_ungrab (guint32 time)
{
gdk_display_pointer_ungrab (gdk_display_get_default (), time);
}
/**
* gdk_pointer_is_grabbed:
*
* Returns %TRUE if the pointer on the default display is currently
* grabbed by this application.
*
* Note that this does not take the inmplicit pointer grab on button
* presses into account.
*
* Return value: %TRUE if the pointer is currently grabbed by this application.
*
* Deprecated: 3.0: Use gdk_display_device_is_grabbed() instead.
**/
gboolean
gdk_pointer_is_grabbed (void)
{
return gdk_display_pointer_is_grabbed (gdk_display_get_default ());
}
/**
* gdk_display_keyboard_ungrab:
* @display: a #GdkDisplay.
* @time_: a timestap (e.g #GDK_CURRENT_TIME).
*
* Release any keyboard grab
*
* Since: 2.2
*
* Deprecated: 3.0: Use gdk_device_ungrab(), together with gdk_device_grab()
* 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;
if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD)
continue;
gdk_device_ungrab (device, time);
}
g_list_free (devices);
}
/**
* gdk_keyboard_ungrab:
* @time_: a timestamp from a #GdkEvent, or %GDK_CURRENT_TIME if no
* timestamp is available.
*
* Ungrabs the keyboard on the default display, if it is grabbed by this
* application.
*
* Deprecated: 3.0: Use gdk_device_ungrab(), together with gdk_device_grab()
* instead.
**/
void
gdk_keyboard_ungrab (guint32 time)
{
gdk_display_keyboard_ungrab (gdk_display_get_default (), time);
}
/**
* gdk_beep:
*
* Emits a short beep on the default display.
**/
void
gdk_beep (void)
{
gdk_display_beep (gdk_display_get_default ());
}
/**
* 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);
}
/**
* gdk_event_send_client_message:
* @event: the #GdkEvent to send, which should be a #GdkEventClient.
* @winid: the window to send the X ClientMessage event to.
*
* Sends an X ClientMessage event to a given window (which must be
* on the default #GdkDisplay.)
* This could be used for communicating between different applications,
* though the amount of data is limited to 20 bytes.
*
* Return value: non-zero on success.
**/
gboolean
gdk_event_send_client_message (GdkEvent *event,
GdkNativeWindow winid)
{
g_return_val_if_fail (event != NULL, FALSE);
return gdk_event_send_client_message_for_display (gdk_display_get_default (),
event, winid);
}
/**
* gdk_event_send_clientmessage_toall:
* @event: the #GdkEvent to send, which should be a #GdkEventClient.
*
* Sends an X ClientMessage event to all toplevel windows on the default
* #GdkScreen.
*
* Toplevel windows are determined by checking for the WM_STATE property, as
* described in the Inter-Client Communication Conventions Manual (ICCCM).
* If no windows are found with the WM_STATE property set, the message is sent
* to all children of the root window.
**/
void
gdk_event_send_clientmessage_toall (GdkEvent *event)
{
g_return_if_fail (event != NULL);
gdk_screen_broadcast_client_message (gdk_screen_get_default (), event);
}
/**
* gdk_set_sm_client_id:
* @sm_client_id: the client id assigned by the session manager when the
* connection was opened, or %NULL to remove the property.
*
* Sets the <literal>SM_CLIENT_ID</literal> property on the application's leader window so that
* the window manager can save the application's state using the X11R6 ICCCM
* session management protocol.
*
* See the X Session Management Library documentation for more information on
* session management and the Inter-Client Communication Conventions Manual
* (ICCCM) for information on the <literal>WM_CLIENT_LEADER</literal> property.
* (Both documents are part of the X Window System distribution.)
**/
void
gdk_set_sm_client_id (const gchar* sm_client_id)
{
GSList *displays, *tmp_list;
g_free (gdk_sm_client_id);
gdk_sm_client_id = g_strdup (sm_client_id);
displays = gdk_display_manager_list_displays (gdk_display_manager_get ());
for (tmp_list = displays; tmp_list; tmp_list = tmp_list->next)
_gdk_windowing_display_set_sm_client_id (tmp_list->data, sm_client_id);
g_slist_free (displays);
}
/**
* _gdk_get_sm_client_id:
*
* Gets the client ID set with gdk_set_sm_client_id(), if any.
*
* Return value: Session ID, or %NULL if gdk_set_sm_client_id()
* has never been called.
**/
const char *
_gdk_get_sm_client_id (void)
{
return gdk_sm_client_id;
}
void
_gdk_display_enable_motion_hints (GdkDisplay *display,
GdkDevice *device)
{
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)
{
serial = _gdk_windowing_window_get_next_serial (display);
/* We might not actually generate the next request, so
make sure this triggers always, this may cause it to
trigger slightly too early, but this is just a hint
anyway. */
if (serial > 0)
serial--;
if (serial < *device_serial)
*device_serial = serial;
}
}
/**
* gdk_display_get_device_state:
* @display: a #GdkDisplay.
* @device: pointer device to query status about.
* @screen: (out) (transfer none) (allow-none): location to store the #GdkScreen
* the @device is on, or %NULL.
* @x: (out) (allow-none): location to store root window X coordinate of @device, or %NULL.
* @y: (out) (allow-none): location to store root window Y coordinate of @device, or %NULL.
* @mask: (out) (allow-none): location to store current modifier mask for @device, or %NULL.
*
* Gets the current location and state of @device for a given display.
*
* Since: 3.0
**/
void
gdk_display_get_device_state (GdkDisplay *display,
GdkDevice *device,
GdkScreen **screen,
gint *x,
gint *y,
GdkModifierType *mask)
{
GdkScreen *tmp_screen;
gint tmp_x, tmp_y;
GdkModifierType tmp_mask;
g_return_if_fail (GDK_IS_DISPLAY (display));
g_return_if_fail (GDK_IS_DEVICE (device));
g_return_if_fail (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD);
display->device_hooks->get_device_state (display, device, &tmp_screen, &tmp_x, &tmp_y, &tmp_mask);
if (screen)
*screen = tmp_screen;
if (x)
*x = tmp_x;
if (y)
*y = tmp_y;
if (mask)
*mask = tmp_mask;
}
/**
* gdk_display_get_window_at_device_position:
* @display: a #GdkDisplay.
* @device: pointer #GdkDevice to query info to.
* @win_x: (out) (allow-none): return location for the X coordinate of the device location,
* relative to the window origin, or %NULL.
* @win_y: (out) (allow-none): return location for the Y coordinate of the device location,
* relative to the window origin, or %NULL.
*
* Obtains the window underneath @device, returning the location of the device in @win_x and @win_y. Returns
* %NULL if the window tree under @device is not known to GDK (for example, belongs to another application).
*
* Returns: (transfer none): the #GdkWindow under the device position, or %NULL.
*
* Since: 3.0
**/
GdkWindow *
gdk_display_get_window_at_device_position (GdkDisplay *display,
GdkDevice *device,
gint *win_x,
gint *win_y)
{
gint tmp_x, tmp_y;
GdkWindow *window;
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
g_return_val_if_fail (GDK_IS_DEVICE (device), NULL);
g_return_val_if_fail (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD, NULL);
window = display->device_hooks->window_at_device_position (display, device, &tmp_x, &tmp_y);
if (win_x)
*win_x = tmp_x;
if (win_y)
*win_y = tmp_y;
return window;
}
/**
* gdk_display_set_device_hooks:
* @display: a #GdkDisplay.
* @new_hooks: (allow-none): a table of pointers to functions for getting quantities related
* to all devices position, or %NULL to restore the default table.
*
* This function allows for hooking into the operation of getting the current location of any
* #GdkDevice on a particular #GdkDisplay. This is only useful for such low-level tools as
* an event recorder. Applications should never have any reason to use this facility.
*
* Returns: (transfer none): The previous device hook table.
*
* Since: 3.0
**/
GdkDisplayDeviceHooks *
gdk_display_set_device_hooks (GdkDisplay *display,
const GdkDisplayDeviceHooks *new_hooks)
{
const GdkDisplayDeviceHooks *result;
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
result = display->device_hooks;
if (new_hooks)
display->device_hooks = new_hooks;
else
display->device_hooks = &default_device_hooks;
return (GdkDisplayDeviceHooks *) result;
}
/**
* gdk_display_get_pointer:
* @display: a #GdkDisplay
* @screen: (allow-none): location to store the screen that the
* cursor is on, or %NULL.
* @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
*
* Gets the current location of the pointer and the current modifier
* mask for a given display.
*
* Since: 2.2
*
* Deprecated: 3.0: Use gdk_display_get_device_state() instead.
**/
void
gdk_display_get_pointer (GdkDisplay *display,
GdkScreen **screen,
gint *x,
gint *y,
GdkModifierType *mask)
{
g_return_if_fail (GDK_IS_DISPLAY (display));
gdk_display_get_device_state (display, display->core_pointer, screen, x, y, mask);
}
static GdkWindow *
gdk_display_real_get_window_at_device_position (GdkDisplay *display,
GdkDevice *device,
gint *win_x,
gint *win_y)
{
GdkWindow *window;
gint x, y;
window = _gdk_windowing_window_at_device_position (display, device, &x, &y, NULL, FALSE);
/* This might need corrections, as the native window returned
may contain client side children */
if (window)
{
double xx, yy;
window = _gdk_window_find_descendant_at (window,
x, y,
&xx, &yy);
x = floor (xx + 0.5);
y = floor (yy + 0.5);
}
*win_x = x;
*win_y = y;
return window;
}
static GdkWindow *
gdk_window_real_window_get_device_position (GdkDisplay *display,
GdkDevice *device,
GdkWindow *window,
gint *x,
gint *y,
GdkModifierType *mask)
{
gint tmpx, tmpy;
GdkModifierType tmp_mask;
gboolean normal_child;
normal_child = GDK_WINDOW_IMPL_GET_CLASS (window->impl)->get_device_state (window,
device,
&tmpx, &tmpy,
&tmp_mask);
/* We got the coords on the impl, convert to the window */
tmpx -= window->abs_x;
tmpy -= window->abs_y;
if (x)
*x = tmpx;
if (y)
*y = tmpy;
if (mask)
*mask = tmp_mask;
if (normal_child)
return _gdk_window_find_child_at (window, tmpx, tmpy);
return NULL;
}
/**
* gdk_display_get_window_at_pointer:
* @display: a #GdkDisplay
* @win_x: (out) (allow-none): return location for x coordinate of the pointer location relative
* to the window origin, or %NULL
* @win_y: (out) (allow-none): return location for y coordinate of the pointer location relative
& to the window origin, or %NULL
*
* Obtains the window underneath the mouse pointer, returning the location
* of the pointer in that window in @win_x, @win_y for @screen. Returns %NULL
* if the window under the mouse pointer is not known to GDK (for example,
* belongs to another application).
*
* Returns: (transfer none): the window under the mouse pointer, or %NULL
*
* Since: 2.2
*
* Deprecated: 3.0: Use gdk_display_get_window_at_device_position() instead.
**/
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);
return gdk_display_get_window_at_device_position (display, display->core_pointer, win_x, win_y);
}
static void
multihead_get_device_state (GdkDisplay *display,
GdkDevice *device,
GdkScreen **screen,
gint *x,
gint *y,
GdkModifierType *mask)
{
multihead_current_pointer_hooks->get_pointer (display, screen, x, y, mask);
}
static GdkWindow *
multihead_window_get_device_position (GdkDisplay *display,
GdkDevice *device,
GdkWindow *window,
gint *x,
gint *y,
GdkModifierType *mask)
{
return multihead_current_pointer_hooks->window_get_pointer (display, window, x, y, mask);
}
static GdkWindow *
multihead_window_at_device_position (GdkDisplay *display,
GdkDevice *device,
gint *win_x,
gint *win_y)
{
return multihead_current_pointer_hooks->window_at_pointer (display, win_x, win_y);
}
static void
multihead_default_get_pointer (GdkDisplay *display,
GdkScreen **screen,
gint *x,
gint *y,
GdkModifierType *mask)
{
return _gdk_windowing_get_device_state (display,
display->core_pointer,
screen, x, y, mask);
}
static GdkWindow *
multihead_default_window_get_pointer (GdkDisplay *display,
GdkWindow *window,
gint *x,
gint *y,
GdkModifierType *mask)
{
return gdk_window_real_window_get_device_position (display,
display->core_pointer,
window, x, y, mask);
}
static GdkWindow *
multihead_default_window_at_pointer (GdkDisplay *display,
gint *win_x,
gint *win_y)
{
return gdk_display_real_get_window_at_device_position (display,
display->core_pointer,
win_x, win_y);
}
/**
* gdk_display_set_pointer_hooks:
* @display: a #GdkDisplay
* @new_hooks: (allow-none): a table of pointers to functions for getting
* quantities related to the current pointer position,
* or %NULL to restore the default table.
*
* This function allows for hooking into the operation
* of getting the current location of the pointer on a particular
* display. This is only useful for such low-level tools as an
* event recorder. Applications should never have any
* reason to use this facility.
*
* Return value: (transfer none): the previous pointer hook table
*
* Since: 2.2
*
* Deprecated: 3.0: Use gdk_display_set_device_hooks() instead.
**/
GdkDisplayPointerHooks *
gdk_display_set_pointer_hooks (GdkDisplay *display,
const GdkDisplayPointerHooks *new_hooks)
{
const GdkDisplayPointerHooks *result = multihead_current_pointer_hooks;
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
if (new_hooks)
multihead_current_pointer_hooks = new_hooks;
else
multihead_current_pointer_hooks = &multihead_default_pointer_hooks;
gdk_display_set_device_hooks (display, &multihead_pointer_hooks);
return (GdkDisplayPointerHooks *)result;
}
static void
singlehead_get_pointer (GdkDisplay *display,
GdkScreen **screen,
gint *x,
gint *y,
GdkModifierType *mask)
{
GdkScreen *default_screen = gdk_display_get_default_screen (display);
GdkWindow *root_window = gdk_screen_get_root_window (default_screen);
*screen = default_screen;
singlehead_current_pointer_hooks->get_pointer (root_window, x, y, mask);
}
static GdkWindow*
singlehead_window_get_pointer (GdkDisplay *display,
GdkWindow *window,
gint *x,
gint *y,
GdkModifierType *mask)
{
return singlehead_current_pointer_hooks->get_pointer (window, x, y, mask);
}
static GdkWindow*
singlehead_window_at_pointer (GdkDisplay *display,
gint *win_x,
gint *win_y)
{
GdkScreen *default_screen = gdk_display_get_default_screen (display);
return singlehead_current_pointer_hooks->window_at_pointer (default_screen,
win_x, win_y);
}
static GdkWindow*
singlehead_default_window_get_pointer (GdkWindow *window,
gint *x,
gint *y,
GdkModifierType *mask)
{
GdkDisplay *display;
display = gdk_window_get_display (window);
return gdk_window_real_window_get_device_position (display,
display->core_pointer,
window, x, y, mask);
}
static GdkWindow*
singlehead_default_window_at_pointer (GdkScreen *screen,
gint *win_x,
gint *win_y)
{
GdkDisplay *display;
display = gdk_screen_get_display (screen);
return gdk_display_real_get_window_at_device_position (display,
display->core_pointer,
win_x, win_y);
}
/**
* gdk_set_pointer_hooks:
* @new_hooks: (allow-none): a table of pointers to functions for getting
* quantities related to the current pointer position,
* or %NULL to restore the default table.
*
* This function allows for hooking into the operation
* of getting the current location of the pointer. This
* is only useful for such low-level tools as an
* event recorder. Applications should never have any
* reason to use this facility.
*
* This function is not multihead safe. For multihead operation,
* see gdk_display_set_pointer_hooks().
*
* Return value: the previous pointer hook table
*
* Deprecated: 3.0: Use gdk_display_set_device_hooks() instead.
**/
GdkPointerHooks *
gdk_set_pointer_hooks (const GdkPointerHooks *new_hooks)
{
const GdkPointerHooks *result = singlehead_current_pointer_hooks;
if (new_hooks)
singlehead_current_pointer_hooks = new_hooks;
else
singlehead_current_pointer_hooks = &singlehead_default_pointer_hooks;
gdk_display_set_pointer_hooks (gdk_display_get_default (),
&singlehead_pointer_hooks);
return (GdkPointerHooks *)result;
}
static void
generate_grab_broken_event (GdkWindow *window,
GdkDevice *device,
gboolean implicit,
GdkWindow *grab_window)
{
g_return_if_fail (window != NULL);
if (!GDK_WINDOW_DESTROYED (window))
{
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);
event->grab_broken.keyboard = (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD) ? TRUE : FALSE;
gdk_event_put (event);
gdk_event_free (event);
}
}
GdkDeviceGrabInfo *
_gdk_display_get_last_device_grab (GdkDisplay *display,
GdkDevice *device)
{
GList *l;
l = g_hash_table_lookup (display->device_grabs, device);
if (l)
{
l = g_list_last (l);
return l->data;
}
return NULL;
}
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)
{
GdkDeviceGrabInfo *info, *other_info;
GList *grabs, *l;
info = g_new0 (GdkDeviceGrabInfo, 1);
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;
info->ownership = grab_ownership;
grabs = g_hash_table_lookup (display->device_grabs, device);
/* 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 */
for (l = grabs; l != NULL; l = l->next)
{
other_info = l->data;
if (info->serial_start < other_info->serial_start)
break;
}
grabs = g_list_insert_before (grabs, l, info);
/* Make sure the new grab end before next grab */
if (l)
{
other_info = l->data;
info->serial_end = other_info->serial_start;
}
/* Find any previous grab and update its end time */
l = g_list_find (grabs, info);
l = l->prev;
if (l)
{
other_info = l->data;
other_info->serial_end = serial_start;
}
g_hash_table_insert (display->device_grabs, device, grabs);
return info;
}
/* _gdk_synthesize_crossing_events only works inside one toplevel.
This function splits things into two calls if needed, converting the
coordinates to the right toplevel */
static void
synthesize_crossing_events (GdkDisplay *display,
GdkDevice *device,
GdkDevice *source_device,
GdkWindow *src_window,
GdkWindow *dest_window,
GdkCrossingMode crossing_mode,
guint32 time,
gulong serial)
{
GdkWindow *src_toplevel, *dest_toplevel;
GdkModifierType state;
int x, y;
/* We use the native crossing events if all native */
if (_gdk_native_windows)
return;
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 */
gdk_window_get_pointer (dest_toplevel,
&x, &y, &state);
_gdk_synthesize_crossing_events (display,
src_window,
dest_window,
device, source_device,
crossing_mode,
x, y, state,
time,
NULL,
serial, FALSE);
}
else if (dest_toplevel == NULL)
{
gdk_window_get_pointer (src_toplevel,
&x, &y, &state);
_gdk_synthesize_crossing_events (display,
src_window,
NULL,
device, source_device,
crossing_mode,
x, y, state,
time,
NULL,
serial, FALSE);
}
else
{
/* Different toplevels */
gdk_window_get_pointer (src_toplevel,
&x, &y, &state);
_gdk_synthesize_crossing_events (display,
src_window,
NULL,
device, source_device,
crossing_mode,
x, y, state,
time,
NULL,
serial, FALSE);
gdk_window_get_pointer (dest_toplevel,
&x, &y, &state);
_gdk_synthesize_crossing_events (display,
NULL,
dest_window,
device, source_device,
crossing_mode,
x, y, state,
time,
NULL,
serial, FALSE);
}
}
static GdkWindow *
get_current_toplevel (GdkDisplay *display,
GdkDevice *device,
int *x_out,
int *y_out,
GdkModifierType *state_out)
{
GdkWindow *pointer_window;
int x, y;
GdkModifierType state;
pointer_window = _gdk_windowing_window_at_device_position (display, device, &x, &y, &state, TRUE);
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;
return pointer_window;
}
static void
switch_to_pointer_grab (GdkDisplay *display,
GdkDevice *device,
GdkDevice *source_device,
GdkDeviceGrabInfo *grab,
GdkDeviceGrabInfo *last_grab,
guint32 time,
gulong serial)
{
GdkWindow *src_window, *pointer_window, *new_toplevel;
GdkPointerWindowInfo *info;
GList *old_grabs;
GdkModifierType state;
int x, y;
/* Temporarily unset pointer to make sure we send the crossing events below */
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);
if (grab)
{
/* New grab is in effect */
/* 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
* doesn't have button mask so a parent gets the event...
*/
if (!grab->implicit)
{
/* 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;
else
src_window = info->window_under_pointer;
if (src_window != grab->window)
synthesize_crossing_events (display, device, source_device,
src_window, grab->window,
GDK_CROSSING_GRAB, time, serial);
/* !owner_event Grabbing a window that we're not inside, current status is
now NULL (i.e. outside grabbed window) */
if (!grab->owner_events && info->window_under_pointer != grab->window)
_gdk_display_set_window_under_pointer (display, device, NULL);
}
grab->activated = TRUE;
}
if (last_grab)
{
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.
*/
if (info->toplevel_under_pointer)
g_object_unref (info->toplevel_under_pointer);
info->toplevel_under_pointer = NULL;
new_toplevel = get_current_toplevel (display, device, &x, &y, &state);
if (new_toplevel)
{
/* w is now toplevel and x,y in toplevel coords */
info->toplevel_under_pointer = g_object_ref (new_toplevel);
info->toplevel_x = x;
info->toplevel_y = y;
info->state = state;
}
}
if (grab == NULL) /* Ungrabbed, send events */
{
pointer_window = NULL;
if (new_toplevel)
{
/* Find (possibly virtual) child window */
pointer_window =
_gdk_window_find_descendant_at (new_toplevel,
x, y,
NULL, NULL);
}
if (pointer_window != last_grab->window)
synthesize_crossing_events (display, device, source_device,
last_grab->window, pointer_window,
GDK_CROSSING_UNGRAB, time, serial);
/* We're now ungrabbed, update the window_under_pointer */
_gdk_display_set_window_under_pointer (display, device, pointer_window);
}
}
g_hash_table_insert (display->device_grabs, device, old_grabs);
}
void
_gdk_display_device_grab_update (GdkDisplay *display,
GdkDevice *device,
GdkDevice *source_device,
gulong current_serial)
{
GdkDeviceGrabInfo *current_grab, *next_grab;
GList *grabs;
guint32 time;
time = display->last_event_time;
grabs = g_hash_table_lookup (display->device_grabs, device);
while (grabs != NULL)
{
current_grab = grabs->data;
if (current_grab->serial_start > current_serial)
return; /* Hasn't started yet */
if (current_grab->serial_end > current_serial)
{
/* This one hasn't ended yet.
its the currently active one or scheduled to be active */
if (!current_grab->activated)
{
if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD)
switch_to_pointer_grab (display, device, source_device, current_grab, NULL, time, current_serial);
}
break;
}
next_grab = NULL;
if (grabs->next)
{
/* This is the next active grab */
next_grab = grabs->next->data;
if (next_grab->serial_start > current_serial)
next_grab = NULL; /* Actually its not yet active */
}
if ((next_grab == NULL && current_grab->implicit_ungrab) ||
(next_grab != NULL && current_grab->window != next_grab->window))
generate_grab_broken_event (GDK_WINDOW (current_grab->window),
device,
current_grab->implicit,
next_grab? next_grab->window : NULL);
/* Remove old grab */
grabs = g_list_delete_link (grabs, grabs);
g_hash_table_insert (display->device_grabs, device, grabs);
if (gdk_device_get_source (device) != GDK_SOURCE_KEYBOARD)
switch_to_pointer_grab (display, device, source_device,
next_grab, current_grab,
time, current_serial);
free_device_grab (current_grab);
}
}
static GList *
grab_list_find (GList *grabs,
gulong serial)
{
GdkDeviceGrabInfo *grab;
while (grabs)
{
grab = grabs->data;
if (serial >= grab->serial_start && serial < grab->serial_end)
return grabs;
grabs = grabs->next;
}
return NULL;
}
static GList *
find_device_grab (GdkDisplay *display,
GdkDevice *device,
gulong serial)
{
GList *l;
l = g_hash_table_lookup (display->device_grabs, device);
return grab_list_find (l, serial);
}
GdkDeviceGrabInfo *
_gdk_display_has_device_grab (GdkDisplay *display,
GdkDevice *device,
gulong serial)
{
GList *l;
l = find_device_grab (display, device, serial);
if (l)
return l->data;
return NULL;
}
/* 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 */
gboolean
_gdk_display_end_device_grab (GdkDisplay *display,
GdkDevice *device,
gulong serial,
GdkWindow *if_child,
gboolean implicit)
{
GdkDeviceGrabInfo *grab;
GList *l;
l = find_device_grab (display, device, serial);
if (l == NULL)
return FALSE;
grab = l->data;
if (grab &&
(if_child == NULL ||
_gdk_window_event_parent_of (if_child, grab->window)))
{
grab->serial_end = serial;
grab->implicit_ungrab = implicit;
return l->next == NULL;
}
return FALSE;
}
/* 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;
device_is_keyboard = (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD);
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 */
if ((device_is_keyboard && gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD) ||
(!device_is_keyboard && gdk_device_get_source (dev) == GDK_SOURCE_KEYBOARD))
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;
}
GdkPointerWindowInfo *
_gdk_display_get_pointer_info (GdkDisplay *display,
GdkDevice *device)
{
GdkPointerWindowInfo *info;
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;
}
void
_gdk_display_pointer_info_foreach (GdkDisplay *display,
GdkDisplayPointerInfoForeach func,
gpointer user_data)
{
GHashTableIter iter;
gpointer key, value;
g_hash_table_iter_init (&iter, display->pointers_info);
while (g_hash_table_iter_next (&iter, &key, &value))
{
GdkPointerWindowInfo *info = value;
GdkDevice *device = key;
(func) (display, device, info, user_data);
}
}
/**
* gdk_device_grab_info_libgtk_only:
* @display: the display for which to get the grab information
* @device: device to get the grab information from
* @grab_window: (out) (transfer none): location to store current grab window
* @owner_events: (out): location to store boolean indicating whether
* the @owner_events flag to gdk_keyboard_grab() or
* gdk_pointer_grab() was %TRUE.
*
* Determines information about the current keyboard grab.
* This is not public API and must not be used by applications.
*
* Return value: %TRUE if this application currently has the
* keyboard grabbed.
**/
gboolean
gdk_device_grab_info_libgtk_only (GdkDisplay *display,
GdkDevice *device,
GdkWindow **grab_window,
gboolean *owner_events)
{
GdkDeviceGrabInfo *info;
g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
g_return_val_if_fail (GDK_IS_DEVICE (device), FALSE);
info = _gdk_display_get_last_device_grab (display, device);
if (info)
{
if (grab_window)
*grab_window = info->window;
if (owner_events)
*owner_events = info->owner_events;
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
*
* Deprecated: 3.0: Use gdk_display_device_is_grabbed() instead.
*/
gboolean
gdk_display_pointer_is_grabbed (GdkDisplay *display)
{
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;
if (gdk_device_get_source (device) == GDK_SOURCE_MOUSE &&
gdk_display_device_is_grabbed (display, device))
return TRUE;
}
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;
g_return_val_if_fail (GDK_IS_DISPLAY (display), TRUE);
g_return_val_if_fail (GDK_IS_DEVICE (device), TRUE);
/* 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. */
info = _gdk_display_get_last_device_grab (display, device);
return (info && !info->implicit);
}
/**
* gdk_display_get_device_manager:
* @display: a #GdkDisplay.
*
* Returns the #GdkDeviceManager associated to @display.
*
* Returns: (transfer none): A #GdkDeviceManager, or %NULL. This memory is
* 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;
}
/**
* 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
*/
G_CONST_RETURN gchar *
gdk_display_get_name (GdkDisplay *display)
{
return GDK_DISPLAY_GET_CLASS(display)->get_name (display);
}
gchar *
gdk_get_display (void)
{
return g_strdup (gdk_display_get_name (gdk_display_get_default ()));
}
/**
* 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)
{
return GDK_DISPLAY_GET_CLASS(display)->get_n_screens (display);
}
/**
* 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)
{
return GDK_DISPLAY_GET_CLASS(display)->get_screen (display, screen_num);
}
/**
* 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)
{
return GDK_DISPLAY_GET_CLASS(display)->get_default_screen (display);
}
/**
* gdk_display_beep:
* @display: a #GdkDisplay
*
* Emits a short beep on @display
*
* Since: 2.2
*/
void
gdk_display_beep (GdkDisplay *display)
{
GDK_DISPLAY_GET_CLASS(display)->beep (display);
}
/**
* 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)
{
GDK_DISPLAY_GET_CLASS(display)->sync (display);
}
/**
* 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)
{
GDK_DISPLAY_GET_CLASS(display)->flush (display);
}
/**
* 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)
{
return GDK_DISPLAY_GET_CLASS(display)->get_default_group (display);
}
/**
* 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)
{
return GDK_DISPLAY_GET_CLASS(display)->supports_selection_notification (display);
}
/**
* 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)
{
return GDK_DISPLAY_GET_CLASS(display)->request_selection_notification (display, selection);
}
/**
* 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)
{
return GDK_DISPLAY_GET_CLASS(display)->supports_clipboard_persistence (display);
}
/**
* gdk_display_store_clipboard
* @display: a #GdkDisplay
* @clipboard_window: a #GdkWindow belonging to the clipboard owner
* @time_: a timestamp
* @targets: an array of targets that should be saved, or %NULL
* 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)
{
GDK_DISPLAY_GET_CLASS(display)->store_clipboard (display, clipboard_window, time_, targets, n_targets);
}
/**
* 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)
{
return GDK_DISPLAY_GET_CLASS(display)->supports_shapes (display);
}
/**
* 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)
{
return GDK_DISPLAY_GET_CLASS(display)->supports_input_shapes (display);
}
/**
* 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)
{
return GDK_DISPLAY_GET_CLASS(display)->supports_composite (display);
}
/**
* 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)
{
return GDK_DISPLAY_GET_CLASS(display)->list_devices (display);
}
/**
* gdk_event_send_client_message_for_display:
* @display: the #GdkDisplay for the window where the message is to be sent.
* @event: the #GdkEvent to send, which should be a #GdkEventClient.
* @winid: the window to send the client message to.
*
* On X11, sends an X ClientMessage event to a given window. On
* Windows, sends a message registered with the name
* GDK_WIN32_CLIENT_MESSAGE.
*
* This could be used for communicating between different
* applications, though the amount of data is limited to 20 bytes on
* X11, and to just four bytes on Windows.
*
* Returns: non-zero on success.
*
* Since: 2.2
*/
gboolean
gdk_event_send_client_message_for_display (GdkDisplay *display,
GdkEvent *event,
GdkNativeWindow winid)
{
return GDK_DISPLAY_GET_CLASS(display)->send_client_message (display, event, winid);
}
/**
* gdk_display_add_client_message_filter:
* @display: a #GdkDisplay for which this message filter applies
* @message_type: the type of ClientMessage events to receive.
* This will be checked against the @message_type field
* of the XClientMessage event struct.
* @func: the function to call to process the event.
* @data: user data to pass to @func.
*
* Adds a filter to be called when X ClientMessage events are received.
* See gdk_window_add_filter() if you are interested in filtering other
* types of events.
*
* Since: 2.2
**/
void
gdk_display_add_client_message_filter (GdkDisplay *display,
GdkAtom message_type,
GdkFilterFunc func,
gpointer data)
{
GDK_DISPLAY_GET_CLASS(display)->add_client_message_filter (display, message_type, func, data);
}
/**
* gdk_add_client_message_filter:
* @message_type: the type of ClientMessage events to receive. This will be
* checked against the <structfield>message_type</structfield> field of the
* XClientMessage event struct.
* @func: the function to call to process the event.
* @data: user data to pass to @func.
*
* Adds a filter to the default display to be called when X ClientMessage events
* are received. See gdk_display_add_client_message_filter().
**/
void
gdk_add_client_message_filter (GdkAtom message_type,
GdkFilterFunc func,
gpointer data)
{
gdk_display_add_client_message_filter (gdk_display_get_default (),
message_type, func, data);
}
static GdkAppLaunchContext *
gdk_display_real_get_app_launch_context (GdkDisplay *display)
{
GdkAppLaunchContext *ctx;
ctx = gdk_app_launch_context_new ();
gdk_app_launch_context_set_display (ctx, display);
return ctx;
}
/**
* gdk_display_get_app_launch_context:
* @display: a #GdkDisplay
*
* Returns a #GdkAppLaunchContext suitable for launching
* applications on the given display.
*
* Returns: a new #GdkAppLaunchContext for @display.
* Free with g_object_unref() when done
*
* Since: 3.0
*/
GdkAppLaunchContext *
gdk_display_get_app_launch_context (GdkDisplay *display)
{
return GDK_DISPLAY_GET_CLASS(display)->get_app_launch_context (display);
}
/**
* gdk_drag_get_protocol_for_display:
* @display: the #GdkDisplay where the destination window resides
* @xid: the windowing system id of the destination window.
* @protocol: location where the supported DND protocol is returned.
*
* Finds out the DND protocol supported by a window.
*
* Return value: the windowing system id of the window where the drop
* should happen. This may be @xid or the id of a proxy window,
* or zero if @xid does not support Drag and Drop.
*
* Since: 2.2
*/
GdkNativeWindow
gdk_drag_get_protocol_for_display (GdkDisplay *display,
GdkNativeWindow xid,
GdkDragProtocol *protocol)
{
return GDK_DISPLAY_GET_CLASS (display)->get_drag_protocol (display, xid, protocol, NULL);
}
/**
* gdk_display_open:
* @display_name: the name of the display to open
*
* Opens a display.
*
* Return value: (transfer none): a #GdkDisplay, or %NULL if the display
* could not be opened.
*
* Since: 2.2
*/
GdkDisplay *
gdk_display_open (const gchar *display_name)
{
return gdk_display_manager_open_display (gdk_display_manager_get (), display_name);
}
gboolean
gdk_display_has_pending (GdkDisplay *display)
{
return GDK_DISPLAY_GET_CLASS (display)->has_pending (display);
}
/**
* gdk_display_supports_cursor_alpha:
* @display: a #GdkDisplay
*
* Returns %TRUE if cursors can use an 8bit alpha channel
* on @display. Otherwise, cursors are restricted to bilevel
* alpha (i.e. a mask).
*
* Returns: whether cursors can have alpha channels.
*
* Since: 2.4
*/
gboolean
gdk_display_supports_cursor_alpha (GdkDisplay *display)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
return GDK_DISPLAY_GET_CLASS (display)->supports_cursor_alpha (display);
}
/**
* gdk_display_supports_cursor_color:
* @display: a #GdkDisplay
*
* Returns %TRUE if multicolored cursors are supported
* on @display. Otherwise, cursors have only a forground
* and a background color.
*
* Returns: whether cursors can have multiple colors.
*
* Since: 2.4
*/
gboolean
gdk_display_supports_cursor_color (GdkDisplay *display)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
return GDK_DISPLAY_GET_CLASS (display)->supports_cursor_color (display);
}
/**
* gdk_display_get_default_cursor_size:
* @display: a #GdkDisplay
*
* Returns the default size to use for cursors on @display.
*
* Returns: the default cursor size.
*
* Since: 2.4
*/
guint
gdk_display_get_default_cursor_size (GdkDisplay *display)
{
guint width, height;
g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
GDK_DISPLAY_GET_CLASS (display)->get_default_cursor_size (display,
&width,
&height);
return MIN (width, height);
}
/**
* gdk_display_get_maximal_cursor_size:
* @display: a #GdkDisplay
* @width: (out): the return location for the maximal cursor width
* @height: (out): the return location for the maximal cursor height
*
* Gets the maximal size to use for cursors on @display.
*
* Since: 2.4
*/
void
gdk_display_get_maximal_cursor_size (GdkDisplay *display,
guint *width,
guint *height)
{
g_return_if_fail (GDK_IS_DISPLAY (display));
GDK_DISPLAY_GET_CLASS (display)->get_maximal_cursor_size (display,
width,
height);
}
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