1 /* GDK - The GIMP Drawing Kit
4 * Copyright 2001 Sun Microsystems Inc.
6 * Erwann Chenede <erwann.chenede@sun.com>
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
26 #include "gdk.h" /* gdk_event_send_client_message() */
27 #include "gdkdisplay.h"
28 #include "gdkinternals.h"
29 #include "gdkmarshalers.h"
30 #include "gdkscreen.h"
38 static void gdk_display_dispose (GObject *object);
39 static void gdk_display_finalize (GObject *object);
42 static void singlehead_get_pointer (GdkDisplay *display,
46 GdkModifierType *mask);
47 static GdkWindow* singlehead_window_get_pointer (GdkDisplay *display,
51 GdkModifierType *mask);
52 static GdkWindow* singlehead_window_at_pointer (GdkDisplay *display,
56 static GdkWindow* singlehead_default_window_get_pointer (GdkWindow *window,
59 GdkModifierType *mask);
60 static GdkWindow* singlehead_default_window_at_pointer (GdkScreen *screen,
64 static guint signals[LAST_SIGNAL] = { 0 };
66 static char *gdk_sm_client_id;
68 static const GdkDisplayPointerHooks default_pointer_hooks = {
69 _gdk_windowing_get_pointer,
70 _gdk_windowing_window_get_pointer,
71 _gdk_windowing_window_at_pointer
74 static const GdkDisplayPointerHooks singlehead_pointer_hooks = {
75 singlehead_get_pointer,
76 singlehead_window_get_pointer,
77 singlehead_window_at_pointer
80 static const GdkPointerHooks singlehead_default_pointer_hooks = {
81 singlehead_default_window_get_pointer,
82 singlehead_default_window_at_pointer
85 static const GdkPointerHooks *singlehead_current_pointer_hooks = &singlehead_default_pointer_hooks;
87 G_DEFINE_TYPE (GdkDisplay, gdk_display, G_TYPE_OBJECT)
90 gdk_display_class_init (GdkDisplayClass *class)
92 GObjectClass *object_class = G_OBJECT_CLASS (class);
94 object_class->finalize = gdk_display_finalize;
95 object_class->dispose = gdk_display_dispose;
99 * @display: the object on which the signal is emitted
100 * @is_error: %TRUE if the display was closed due to an error
102 * The ::closed signal is emitted when the connection to the windowing
103 * system for @display is closed.
108 g_signal_new (g_intern_static_string ("closed"),
109 G_OBJECT_CLASS_TYPE (object_class),
111 G_STRUCT_OFFSET (GdkDisplayClass, closed),
113 gdk_marshal_VOID__BOOLEAN,
120 gdk_display_init (GdkDisplay *display)
122 _gdk_displays = g_slist_prepend (_gdk_displays, display);
124 display->button_click_time[0] = display->button_click_time[1] = 0;
125 display->button_window[0] = display->button_window[1] = NULL;
126 display->button_number[0] = display->button_number[1] = -1;
127 display->button_x[0] = display->button_x[1] = 0;
128 display->button_y[0] = display->button_y[1] = 0;
130 display->double_click_time = 250;
131 display->double_click_distance = 5;
133 display->pointer_hooks = &default_pointer_hooks;
137 gdk_display_dispose (GObject *object)
139 GdkDisplay *display = GDK_DISPLAY_OBJECT (object);
141 g_list_foreach (display->queued_events, (GFunc)gdk_event_free, NULL);
142 g_list_free (display->queued_events);
143 display->queued_events = NULL;
144 display->queued_tail = NULL;
146 _gdk_displays = g_slist_remove (_gdk_displays, object);
148 if (gdk_display_get_default() == display)
151 gdk_display_manager_set_default_display (gdk_display_manager_get(),
152 _gdk_displays->data);
154 gdk_display_manager_set_default_display (gdk_display_manager_get(),
158 G_OBJECT_CLASS (gdk_display_parent_class)->dispose (object);
162 gdk_display_finalize (GObject *object)
164 G_OBJECT_CLASS (gdk_display_parent_class)->finalize (object);
169 * @display: a #GdkDisplay
171 * Closes the connection to the windowing system for the given display,
172 * and cleans up associated resources.
177 gdk_display_close (GdkDisplay *display)
179 g_return_if_fail (GDK_IS_DISPLAY (display));
181 if (!display->closed)
183 display->closed = TRUE;
185 g_signal_emit (display, signals[CLOSED], 0, FALSE);
186 g_object_run_dispose (G_OBJECT (display));
188 g_object_unref (display);
193 * gdk_display_get_event:
194 * @display: a #GdkDisplay
196 * Gets the next #GdkEvent to be processed for @display, fetching events from the
197 * windowing system if necessary.
199 * Return value: the next #GdkEvent to be processed, or %NULL if no events
200 * are pending. The returned #GdkEvent should be freed with gdk_event_free().
205 gdk_display_get_event (GdkDisplay *display)
207 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
209 _gdk_events_queue (display);
210 return _gdk_event_unqueue (display);
214 * gdk_display_peek_event:
215 * @display: a #GdkDisplay
217 * Gets a copy of the first #GdkEvent in the @display's event queue, without
218 * removing the event from the queue. (Note that this function will
219 * not get more events from the windowing system. It only checks the events
220 * that have already been moved to the GDK event queue.)
222 * Return value: a copy of the first #GdkEvent on the event queue, or %NULL
223 * if no events are in the queue. The returned #GdkEvent should be freed with
229 gdk_display_peek_event (GdkDisplay *display)
233 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
235 tmp_list = _gdk_event_queue_find_first (display);
238 return gdk_event_copy (tmp_list->data);
244 * gdk_display_put_event:
245 * @display: a #GdkDisplay
246 * @event: a #GdkEvent.
248 * Appends a copy of the given event onto the front of the event
249 * queue for @display.
254 gdk_display_put_event (GdkDisplay *display,
255 const GdkEvent *event)
257 g_return_if_fail (GDK_IS_DISPLAY (display));
258 g_return_if_fail (event != NULL);
260 _gdk_event_queue_append (display, gdk_event_copy (event));
261 /* If the main loop is blocking in a different thread, wake it up */
262 g_main_context_wakeup (NULL);
266 * gdk_pointer_ungrab:
267 * @time_: a timestamp from a #GdkEvent, or %GDK_CURRENT_TIME if no
268 * timestamp is available.
270 * Ungrabs the pointer on the default display, if it is grabbed by this
274 gdk_pointer_ungrab (guint32 time)
276 gdk_display_pointer_ungrab (gdk_display_get_default (), time);
280 * gdk_pointer_is_grabbed:
282 * Returns %TRUE if the pointer on the default display is currently
283 * grabbed by this application.
285 * Note that this does not take the inmplicit pointer grab on button
286 * presses into account.
288 * Return value: %TRUE if the pointer is currently grabbed by this application.*
291 gdk_pointer_is_grabbed (void)
293 return gdk_display_pointer_is_grabbed (gdk_display_get_default ());
297 * gdk_keyboard_ungrab:
298 * @time_: a timestamp from a #GdkEvent, or %GDK_CURRENT_TIME if no
299 * timestamp is available.
301 * Ungrabs the keyboard on the default display, if it is grabbed by this
305 gdk_keyboard_ungrab (guint32 time)
307 gdk_display_keyboard_ungrab (gdk_display_get_default (), time);
313 * Emits a short beep on the default display.
318 gdk_display_beep (gdk_display_get_default ());
322 * gdk_event_send_client_message:
323 * @event: the #GdkEvent to send, which should be a #GdkEventClient.
324 * @winid: the window to send the X ClientMessage event to.
326 * Sends an X ClientMessage event to a given window (which must be
327 * on the default #GdkDisplay.)
328 * This could be used for communicating between different applications,
329 * though the amount of data is limited to 20 bytes.
331 * Return value: non-zero on success.
334 gdk_event_send_client_message (GdkEvent *event,
335 GdkNativeWindow winid)
337 g_return_val_if_fail (event != NULL, FALSE);
339 return gdk_event_send_client_message_for_display (gdk_display_get_default (),
344 * gdk_event_send_clientmessage_toall:
345 * @event: the #GdkEvent to send, which should be a #GdkEventClient.
347 * Sends an X ClientMessage event to all toplevel windows on the default
350 * Toplevel windows are determined by checking for the WM_STATE property, as
351 * described in the Inter-Client Communication Conventions Manual (ICCCM).
352 * If no windows are found with the WM_STATE property set, the message is sent
353 * to all children of the root window.
356 gdk_event_send_clientmessage_toall (GdkEvent *event)
358 g_return_if_fail (event != NULL);
360 gdk_screen_broadcast_client_message (gdk_screen_get_default (), event);
364 * gdk_device_get_core_pointer:
366 * Returns the core pointer device for the default display.
368 * Return value: the core pointer device; this is owned by the
369 * display and should not be freed.
372 gdk_device_get_core_pointer (void)
374 return gdk_display_get_core_pointer (gdk_display_get_default ());
378 * gdk_display_get_core_pointer:
379 * @display: a #GdkDisplay
381 * Returns the core pointer device for the given display
383 * Return value: the core pointer device; this is owned by the
384 * display and should not be freed.
389 gdk_display_get_core_pointer (GdkDisplay *display)
391 return display->core_pointer;
395 * gdk_set_sm_client_id:
396 * @sm_client_id: the client id assigned by the session manager when the
397 * connection was opened, or %NULL to remove the property.
399 * Sets the <literal>SM_CLIENT_ID</literal> property on the application's leader window so that
400 * the window manager can save the application's state using the X11R6 ICCCM
401 * session management protocol.
403 * See the X Session Management Library documentation for more information on
404 * session management and the Inter-Client Communication Conventions Manual
405 * (ICCCM) for information on the <literal>WM_CLIENT_LEADER</literal> property.
406 * (Both documents are part of the X Window System distribution.)
409 gdk_set_sm_client_id (const gchar* sm_client_id)
411 GSList *displays, *tmp_list;
413 g_free (gdk_sm_client_id);
414 gdk_sm_client_id = g_strdup (sm_client_id);
416 displays = gdk_display_manager_list_displays (gdk_display_manager_get ());
417 for (tmp_list = displays; tmp_list; tmp_list = tmp_list->next)
418 _gdk_windowing_display_set_sm_client_id (tmp_list->data, sm_client_id);
420 g_slist_free (displays);
424 * _gdk_get_sm_client_id:
426 * Gets the client ID set with gdk_set_sm_client_id(), if any.
428 * Return value: Session ID, or %NULL if gdk_set_sm_client_id()
429 * has never been called.
432 _gdk_get_sm_client_id (void)
434 return gdk_sm_client_id;
438 * gdk_display_get_pointer:
439 * @display: a #GdkDisplay
440 * @screen: location to store the screen that the
441 * cursor is on, or %NULL.
442 * @x: location to store root window X coordinate of pointer, or %NULL.
443 * @y: location to store root window Y coordinate of pointer, or %NULL.
444 * @mask: location to store current modifier mask, or %NULL
446 * Gets the current location of the pointer and the current modifier
447 * mask for a given display.
452 gdk_display_get_pointer (GdkDisplay *display,
456 GdkModifierType *mask)
458 GdkScreen *tmp_screen;
460 GdkModifierType tmp_mask;
462 g_return_if_fail (GDK_IS_DISPLAY (display));
464 display->pointer_hooks->get_pointer (display, &tmp_screen, &tmp_x, &tmp_y, &tmp_mask);
467 *screen = tmp_screen;
477 * gdk_display_get_window_at_pointer:
478 * @display: a #GdkDisplay
479 * @win_x: return location for origin of the window under the pointer
480 * @win_y: return location for origin of the window under the pointer
482 * Obtains the window underneath the mouse pointer, returning the location
483 * of that window in @win_x, @win_y for @screen. Returns %NULL if the window
484 * under the mouse pointer is not known to GDK (for example, belongs to
485 * another application).
487 * Returns: the window under the mouse pointer, or %NULL
492 gdk_display_get_window_at_pointer (GdkDisplay *display,
499 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
501 window = display->pointer_hooks->window_at_pointer (display, &tmp_x, &tmp_y);
512 * gdk_display_set_pointer_hooks:
513 * @display: a #GdkDisplay
514 * @new_hooks: a table of pointers to functions for getting
515 * quantities related to the current pointer position,
516 * or %NULL to restore the default table.
518 * This function allows for hooking into the operation
519 * of getting the current location of the pointer on a particular
520 * display. This is only useful for such low-level tools as an
521 * event recorder. Applications should never have any
522 * reason to use this facility.
524 * Return value: the previous pointer hook table
528 GdkDisplayPointerHooks *
529 gdk_display_set_pointer_hooks (GdkDisplay *display,
530 const GdkDisplayPointerHooks *new_hooks)
532 const GdkDisplayPointerHooks *result;
534 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
535 result = display->pointer_hooks;
538 display->pointer_hooks = new_hooks;
540 display->pointer_hooks = &default_pointer_hooks;
542 return (GdkDisplayPointerHooks *)result;
546 singlehead_get_pointer (GdkDisplay *display,
550 GdkModifierType *mask)
552 GdkScreen *default_screen = gdk_display_get_default_screen (display);
553 GdkWindow *root_window = gdk_screen_get_root_window (default_screen);
555 *screen = default_screen;
557 singlehead_current_pointer_hooks->get_pointer (root_window, x, y, mask);
561 singlehead_window_get_pointer (GdkDisplay *display,
565 GdkModifierType *mask)
567 return singlehead_current_pointer_hooks->get_pointer (window, x, y, mask);
571 singlehead_window_at_pointer (GdkDisplay *display,
575 GdkScreen *default_screen = gdk_display_get_default_screen (display);
577 return singlehead_current_pointer_hooks->window_at_pointer (default_screen,
582 singlehead_default_window_get_pointer (GdkWindow *window,
585 GdkModifierType *mask)
587 return _gdk_windowing_window_get_pointer (gdk_drawable_get_display (window),
592 singlehead_default_window_at_pointer (GdkScreen *screen,
596 return _gdk_windowing_window_at_pointer (gdk_screen_get_display (screen),
601 * gdk_set_pointer_hooks:
602 * @new_hooks: a table of pointers to functions for getting
603 * quantities related to the current pointer position,
604 * or %NULL to restore the default table.
606 * This function allows for hooking into the operation
607 * of getting the current location of the pointer. This
608 * is only useful for such low-level tools as an
609 * event recorder. Applications should never have any
610 * reason to use this facility.
612 * This function is not multihead safe. For multihead operation,
613 * see gdk_display_set_pointer_hooks().
615 * Return value: the previous pointer hook table
618 gdk_set_pointer_hooks (const GdkPointerHooks *new_hooks)
620 const GdkPointerHooks *result = singlehead_current_pointer_hooks;
623 singlehead_current_pointer_hooks = new_hooks;
625 singlehead_current_pointer_hooks = &singlehead_default_pointer_hooks;
627 gdk_display_set_pointer_hooks (gdk_display_get_default (),
628 &singlehead_pointer_hooks);
630 return (GdkPointerHooks *)result;
633 #define __GDK_DISPLAY_C__
634 #include "gdkaliasdef.c"