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_class_init (GdkDisplayClass *class);
39 static void gdk_display_init (GdkDisplay *display);
40 static void gdk_display_dispose (GObject *object);
41 static void gdk_display_finalize (GObject *object);
44 static void singlehead_get_pointer (GdkDisplay *display,
48 GdkModifierType *mask);
49 static GdkWindow* singlehead_window_get_pointer (GdkDisplay *display,
53 GdkModifierType *mask);
54 static GdkWindow* singlehead_window_at_pointer (GdkDisplay *display,
58 static GdkWindow* singlehead_default_window_get_pointer (GdkWindow *window,
61 GdkModifierType *mask);
62 static GdkWindow* singlehead_default_window_at_pointer (GdkScreen *screen,
66 static guint signals[LAST_SIGNAL] = { 0 };
68 static GObjectClass *parent_class;
69 static char *gdk_sm_client_id;
71 static const GdkDisplayPointerHooks default_pointer_hooks = {
72 _gdk_windowing_get_pointer,
73 _gdk_windowing_window_get_pointer,
74 _gdk_windowing_window_at_pointer
77 static const GdkDisplayPointerHooks singlehead_pointer_hooks = {
78 singlehead_get_pointer,
79 singlehead_window_get_pointer,
80 singlehead_window_at_pointer
83 static const GdkPointerHooks singlehead_default_pointer_hooks = {
84 singlehead_default_window_get_pointer,
85 singlehead_default_window_at_pointer
88 static const GdkPointerHooks *singlehead_current_pointer_hooks = &singlehead_default_pointer_hooks;
91 gdk_display_get_type (void)
94 static GType object_type = 0;
98 static const GTypeInfo object_info = {
99 sizeof (GdkDisplayClass),
100 (GBaseInitFunc) NULL,
101 (GBaseFinalizeFunc) NULL,
102 (GClassInitFunc) gdk_display_class_init,
103 NULL, /* class_finalize */
104 NULL, /* class_data */
107 (GInstanceInitFunc) gdk_display_init
109 object_type = g_type_register_static (G_TYPE_OBJECT,
110 "GdkDisplay", &object_info, 0);
117 gdk_display_class_init (GdkDisplayClass *class)
119 GObjectClass *object_class = G_OBJECT_CLASS (class);
121 parent_class = g_type_class_peek_parent (class);
123 object_class->finalize = gdk_display_finalize;
124 object_class->dispose = gdk_display_dispose;
127 * GdkDisplay::closed:
128 * @display: the object on which the signal is emitted
129 * @is_error: %TRUE if the display was closed due to an error
131 * The ::closed signal is emitted when the connection to the windowing
132 * system for @display is closed.
137 g_signal_new ("closed",
138 G_OBJECT_CLASS_TYPE (object_class),
140 G_STRUCT_OFFSET (GdkDisplayClass, closed),
142 gdk_marshal_VOID__BOOLEAN,
149 gdk_display_init (GdkDisplay *display)
151 _gdk_displays = g_slist_prepend (_gdk_displays, display);
153 display->button_click_time[0] = display->button_click_time[1] = 0;
154 display->button_window[0] = display->button_window[1] = NULL;
155 display->button_number[0] = display->button_number[1] = -1;
156 display->button_x[0] = display->button_x[1] = 0;
157 display->button_y[0] = display->button_y[1] = 0;
159 display->double_click_time = 250;
160 display->double_click_distance = 5;
162 display->pointer_hooks = &default_pointer_hooks;
166 gdk_display_dispose (GObject *object)
168 GdkDisplay *display = GDK_DISPLAY_OBJECT (object);
170 g_list_foreach (display->queued_events, (GFunc)gdk_event_free, NULL);
171 g_list_free (display->queued_events);
172 display->queued_events = NULL;
173 display->queued_tail = NULL;
175 _gdk_displays = g_slist_remove (_gdk_displays, object);
177 if (gdk_display_get_default() == display)
178 gdk_display_manager_set_default_display (gdk_display_manager_get(), NULL);
180 G_OBJECT_CLASS (parent_class)->dispose (object);
184 gdk_display_finalize (GObject *object)
186 G_OBJECT_CLASS (parent_class)->finalize (object);
191 * @display: a #GdkDisplay
193 * Closes the connection to the windowing system for the given display,
194 * and cleans up associated resources.
199 gdk_display_close (GdkDisplay *display)
201 g_return_if_fail (GDK_IS_DISPLAY (display));
203 if (!display->closed)
205 display->closed = TRUE;
207 g_signal_emit (display, signals[CLOSED], 0, FALSE);
208 g_object_run_dispose (G_OBJECT (display));
210 g_object_unref (display);
215 * gdk_display_get_event:
216 * @display: a #GdkDisplay
218 * Gets the next #GdkEvent to be processed for @display, fetching events from the
219 * windowing system if necessary.
221 * Return value: the next #GdkEvent to be processed, or %NULL if no events
222 * are pending. The returned #GdkEvent should be freed with gdk_event_free().
227 gdk_display_get_event (GdkDisplay *display)
229 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
231 _gdk_events_queue (display);
232 return _gdk_event_unqueue (display);
236 * gdk_display_peek_event:
237 * @display: a #GdkDisplay
239 * Gets a copy of the first #GdkEvent in the @display's event queue, without
240 * removing the event from the queue. (Note that this function will
241 * not get more events from the windowing system. It only checks the events
242 * that have already been moved to the GDK event queue.)
244 * Return value: a copy of the first #GdkEvent on the event queue, or %NULL
245 * if no events are in the queue. The returned #GdkEvent should be freed with
251 gdk_display_peek_event (GdkDisplay *display)
255 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
257 tmp_list = _gdk_event_queue_find_first (display);
260 return gdk_event_copy (tmp_list->data);
266 * gdk_display_put_event:
267 * @display: a #GdkDisplay
268 * @event: a #GdkEvent.
270 * Appends a copy of the given event onto the front of the event
271 * queue for @display.
276 gdk_display_put_event (GdkDisplay *display,
279 g_return_if_fail (GDK_IS_DISPLAY (display));
280 g_return_if_fail (event != NULL);
282 _gdk_event_queue_append (display, gdk_event_copy (event));
286 * gdk_pointer_ungrab:
287 * @time_: a timestamp from a #GdkEvent, or %GDK_CURRENT_TIME if no
288 * timestamp is available.
290 * Ungrabs the pointer, if it is grabbed by this application.
293 gdk_pointer_ungrab (guint32 time)
295 gdk_display_pointer_ungrab (gdk_display_get_default (), time);
299 * gdk_pointer_is_grabbed:
301 * Returns %TRUE if the pointer is currently grabbed by this application.
303 * Note that this does not take the inmplicit pointer grab on button
304 * presses into account.
306 * Return value: %TRUE if the pointer is currently grabbed by this application.*
309 gdk_pointer_is_grabbed (void)
311 return gdk_display_pointer_is_grabbed (gdk_display_get_default ());
315 * gdk_keyboard_ungrab:
316 * @time_: a timestamp from a #GdkEvent, or %GDK_CURRENT_TIME if no
317 * timestamp is available.
319 * Ungrabs the keyboard, if it is grabbed by this application.
322 gdk_keyboard_ungrab (guint32 time)
324 gdk_display_keyboard_ungrab (gdk_display_get_default (), time);
330 * Emits a short beep.
335 gdk_display_beep (gdk_display_get_default ());
339 * gdk_event_send_client_message:
340 * @event: the #GdkEvent to send, which should be a #GdkEventClient.
341 * @winid: the window to send the X ClientMessage event to.
343 * Sends an X ClientMessage event to a given window (which must be
344 * on the default #GdkDisplay.)
345 * This could be used for communicating between different applications,
346 * though the amount of data is limited to 20 bytes.
348 * Return value: non-zero on success.
351 gdk_event_send_client_message (GdkEvent *event,
352 GdkNativeWindow winid)
354 g_return_val_if_fail (event != NULL, FALSE);
356 return gdk_event_send_client_message_for_display (gdk_display_get_default (),
361 * gdk_event_send_clientmessage_toall:
362 * @event: the #GdkEvent to send, which should be a #GdkEventClient.
364 * Sends an X ClientMessage event to all toplevel windows on the default
367 * Toplevel windows are determined by checking for the WM_STATE property, as
368 * described in the Inter-Client Communication Conventions Manual (ICCCM).
369 * If no windows are found with the WM_STATE property set, the message is sent
370 * to all children of the root window.
373 gdk_event_send_clientmessage_toall (GdkEvent *event)
375 g_return_if_fail (event != NULL);
377 gdk_screen_broadcast_client_message (gdk_screen_get_default (), event);
381 * gdk_device_get_core_pointer:
383 * Returns the core pointer device for the default display.
385 * Return value: the core pointer device; this is owned by the
386 * display and should not be freed.
389 gdk_device_get_core_pointer (void)
391 return gdk_display_get_core_pointer (gdk_display_get_default ());
395 * gdk_display_get_core_pointer:
396 * @display: a #GdkDisplay
398 * Returns the core pointer device for the given display
400 * Return value: the core pointer device; this is owned by the
401 * display and should not be freed.
406 gdk_display_get_core_pointer (GdkDisplay *display)
408 return display->core_pointer;
412 * gdk_set_sm_client_id:
413 * @sm_client_id: the client id assigned by the session manager when the
414 * connection was opened, or %NULL to remove the property.
416 * Sets the <literal>SM_CLIENT_ID</literal> property on the application's leader window so that
417 * the window manager can save the application's state using the X11R6 ICCCM
418 * session management protocol.
420 * See the X Session Management Library documentation for more information on
421 * session management and the Inter-Client Communication Conventions Manual
422 * (ICCCM) for information on the <literal>WM_CLIENT_LEADER</literal> property.
423 * (Both documents are part of the X Window System distribution.)
426 gdk_set_sm_client_id (const gchar* sm_client_id)
428 GSList *displays, *tmp_list;
430 g_free (gdk_sm_client_id);
431 gdk_sm_client_id = g_strdup (sm_client_id);
433 displays = gdk_display_manager_list_displays (gdk_display_manager_get ());
434 for (tmp_list = displays; tmp_list; tmp_list = tmp_list->next)
435 _gdk_windowing_display_set_sm_client_id (tmp_list->data, sm_client_id);
437 g_slist_free (displays);
441 * _gdk_get_sm_client_id:
443 * Gets the client ID set with gdk_set_sm_client_id(), if any.
445 * Return value: Session ID, or %NULL if gdk_set_sm_client_id()
446 * has never been called.
449 _gdk_get_sm_client_id (void)
451 return gdk_sm_client_id;
455 * gdk_display_get_pointer:
456 * @display: a #GdkDisplay
457 * @screen: location to store the screen that the
458 * cursor is on, or %NULL.
459 * @x: location to store root window X coordinate of pointer, or %NULL.
460 * @y: location to store root window Y coordinate of pointer, or %NULL.
461 * @mask: location to store current modifier mask, or %NULL
463 * Gets the current location of the pointer and the current modifier
464 * mask for a given display.
469 gdk_display_get_pointer (GdkDisplay *display,
473 GdkModifierType *mask)
475 GdkScreen *tmp_screen;
477 GdkModifierType tmp_mask;
479 g_return_if_fail (GDK_IS_DISPLAY (display));
481 display->pointer_hooks->get_pointer (display, &tmp_screen, &tmp_x, &tmp_y, &tmp_mask);
484 *screen = tmp_screen;
494 * gdk_display_get_window_at_pointer:
495 * @display: a #GdkDisplay
496 * @win_x: return location for origin of the window under the pointer
497 * @win_y: return location for origin of the window under the pointer
499 * Obtains the window underneath the mouse pointer, returning the location
500 * of that window in @win_x, @win_y for @screen. Returns %NULL if the window
501 * under the mouse pointer is not known to GDK (for example, belongs to
502 * another application).
504 * Returns: the window under the mouse pointer, or %NULL
509 gdk_display_get_window_at_pointer (GdkDisplay *display,
516 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
518 window = display->pointer_hooks->window_at_pointer (display, &tmp_x, &tmp_y);
529 * gdk_display_set_pointer_hooks:
530 * @display: a #GdkDisplay
531 * @new_hooks: a table of pointers to functions for getting
532 * quantities related to the current pointer position,
533 * or %NULL to restore the default table.
535 * This function allows for hooking into the operation
536 * of getting the current location of the pointer on a particular
537 * display. This is only useful for such low-level tools as an
538 * event recorder. Applications should never have any
539 * reason to use this facility.
541 * Return value: the previous pointer hook table
545 GdkDisplayPointerHooks *
546 gdk_display_set_pointer_hooks (GdkDisplay *display,
547 const GdkDisplayPointerHooks *new_hooks)
549 const GdkDisplayPointerHooks *result;
551 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
552 result = display->pointer_hooks;
555 display->pointer_hooks = new_hooks;
557 display->pointer_hooks = &default_pointer_hooks;
559 return (GdkDisplayPointerHooks *)result;
563 singlehead_get_pointer (GdkDisplay *display,
567 GdkModifierType *mask)
569 GdkScreen *default_screen = gdk_display_get_default_screen (display);
570 GdkWindow *root_window = gdk_screen_get_root_window (default_screen);
572 *screen = default_screen;
574 singlehead_current_pointer_hooks->get_pointer (root_window, x, y, mask);
578 singlehead_window_get_pointer (GdkDisplay *display,
582 GdkModifierType *mask)
584 return singlehead_current_pointer_hooks->get_pointer (window, x, y, mask);
588 singlehead_window_at_pointer (GdkDisplay *display,
592 GdkScreen *default_screen = gdk_display_get_default_screen (display);
594 return singlehead_current_pointer_hooks->window_at_pointer (default_screen,
599 singlehead_default_window_get_pointer (GdkWindow *window,
602 GdkModifierType *mask)
604 return _gdk_windowing_window_get_pointer (gdk_drawable_get_display (window),
609 singlehead_default_window_at_pointer (GdkScreen *screen,
613 return _gdk_windowing_window_at_pointer (gdk_screen_get_display (screen),
618 * gdk_set_pointer_hooks:
619 * @new_hooks: a table of pointers to functions for getting
620 * quantities related to the current pointer position,
621 * or %NULL to restore the default table.
623 * This function allows for hooking into the operation
624 * of getting the current location of the pointer. This
625 * is only useful for such low-level tools as an
626 * event recorder. Applications should never have any
627 * reason to use this facility.
629 * This function is not multihead safe. For multihead operation,
630 * see gdk_display_set_pointer_hooks().
632 * Return value: the previous pointer hook table
635 gdk_set_pointer_hooks (const GdkPointerHooks *new_hooks)
637 const GdkPointerHooks *result = singlehead_current_pointer_hooks;
640 singlehead_current_pointer_hooks = new_hooks;
642 singlehead_current_pointer_hooks = &singlehead_default_pointer_hooks;
644 gdk_display_set_pointer_hooks (gdk_display_get_default (),
645 &singlehead_pointer_hooks);
647 return (GdkPointerHooks *)result;
650 #define __GDK_DISPLAY_C__
651 #include "gdkaliasdef.c"