/* GDK - The GIMP Drawing Kit * gdkdisplay-x11.c * * Copyright 2001 Sun Microsystems Inc. * Copyright (C) 2004 Nokia Corporation * * Erwann Chenede * * 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-x11.h" #include "gdkx.h" #include "gdkasync.h" #include "gdkdisplay.h" #include "gdkeventsource.h" #include "gdkeventtranslator.h" #include "gdkscreen.h" #include "gdkscreen-x11.h" #include "gdkinternals.h" #include "gdkdeviceprivate.h" #include "gdkdevicemanager.h" #include "xsettings-client.h" #include #include #include #include #include #include #include #ifdef HAVE_XKB #include #endif #ifdef HAVE_XFIXES #include #endif #include #ifdef HAVE_XCOMPOSITE #include #endif #ifdef HAVE_XDAMAGE #include #endif #ifdef HAVE_RANDR #include #endif typedef struct _GdkErrorTrap GdkErrorTrap; struct _GdkErrorTrap { /* Next sequence when trap was pushed, i.e. first sequence to * ignore */ gulong start_sequence; /* Next sequence when trap was popped, i.e. first sequence * to not ignore. 0 if trap is still active. */ gulong end_sequence; /* Most recent error code within the sequence */ int error_code; }; static void gdk_display_x11_dispose (GObject *object); static void gdk_display_x11_finalize (GObject *object); static void gdk_display_x11_event_translator_init (GdkEventTranslatorIface *iface); static gboolean gdk_display_x11_translate_event (GdkEventTranslator *translator, GdkDisplay *display, GdkEvent *event, XEvent *xevent); #ifdef HAVE_X11R6 static void gdk_internal_connection_watch (Display *display, XPointer arg, gint fd, gboolean opening, XPointer *watch_data); #endif /* HAVE_X11R6 */ typedef struct _GdkEventTypeX11 GdkEventTypeX11; struct _GdkEventTypeX11 { gint base; gint n_events; }; /* Note that we never *directly* use WM_LOCALE_NAME, WM_PROTOCOLS, * but including them here has the side-effect of getting them * into the internal Xlib cache */ static const char *const precache_atoms[] = { "UTF8_STRING", "WM_CLIENT_LEADER", "WM_DELETE_WINDOW", "WM_ICON_NAME", "WM_LOCALE_NAME", "WM_NAME", "WM_PROTOCOLS", "WM_TAKE_FOCUS", "WM_WINDOW_ROLE", "_NET_ACTIVE_WINDOW", "_NET_CURRENT_DESKTOP", "_NET_FRAME_EXTENTS", "_NET_STARTUP_ID", "_NET_WM_CM_S0", "_NET_WM_DESKTOP", "_NET_WM_ICON", "_NET_WM_ICON_NAME", "_NET_WM_NAME", "_NET_WM_PID", "_NET_WM_PING", "_NET_WM_STATE", "_NET_WM_STATE_ABOVE", "_NET_WM_STATE_BELOW", "_NET_WM_STATE_FULLSCREEN", "_NET_WM_STATE_MODAL", "_NET_WM_STATE_MAXIMIZED_VERT", "_NET_WM_STATE_MAXIMIZED_HORZ", "_NET_WM_STATE_SKIP_TASKBAR", "_NET_WM_STATE_SKIP_PAGER", "_NET_WM_STATE_STICKY", "_NET_WM_SYNC_REQUEST", "_NET_WM_SYNC_REQUEST_COUNTER", "_NET_WM_WINDOW_TYPE", "_NET_WM_WINDOW_TYPE_NORMAL", "_NET_WM_USER_TIME", "_NET_VIRTUAL_ROOTS" }; G_DEFINE_TYPE_WITH_CODE (GdkDisplayX11, _gdk_display_x11, GDK_TYPE_DISPLAY, G_IMPLEMENT_INTERFACE (GDK_TYPE_EVENT_TRANSLATOR, gdk_display_x11_event_translator_init)) static void _gdk_display_x11_class_init (GdkDisplayX11Class * class) { GObjectClass *object_class = G_OBJECT_CLASS (class); object_class->dispose = gdk_display_x11_dispose; object_class->finalize = gdk_display_x11_finalize; } static void _gdk_display_x11_init (GdkDisplayX11 *display) { } static void gdk_display_x11_event_translator_init (GdkEventTranslatorIface *iface) { iface->translate_event = gdk_display_x11_translate_event; } static void do_net_wm_state_changes (GdkWindow *window) { GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (window); GdkWindowState old_state; if (GDK_WINDOW_DESTROYED (window) || gdk_window_get_window_type (window) != GDK_WINDOW_TOPLEVEL) return; old_state = gdk_window_get_state (window); /* For found_sticky to remain TRUE, we have to also be on desktop * 0xFFFFFFFF */ if (old_state & GDK_WINDOW_STATE_STICKY) { if (!(toplevel->have_sticky && toplevel->on_all_desktops)) gdk_synthesize_window_state (window, GDK_WINDOW_STATE_STICKY, 0); } else { if (toplevel->have_sticky || toplevel->on_all_desktops) gdk_synthesize_window_state (window, 0, GDK_WINDOW_STATE_STICKY); } if (old_state & GDK_WINDOW_STATE_FULLSCREEN) { if (!toplevel->have_fullscreen) gdk_synthesize_window_state (window, GDK_WINDOW_STATE_FULLSCREEN, 0); } else { if (toplevel->have_fullscreen) gdk_synthesize_window_state (window, 0, GDK_WINDOW_STATE_FULLSCREEN); } /* Our "maximized" means both vertical and horizontal; if only one, * we don't expose that via GDK */ if (old_state & GDK_WINDOW_STATE_MAXIMIZED) { if (!(toplevel->have_maxvert && toplevel->have_maxhorz)) gdk_synthesize_window_state (window, GDK_WINDOW_STATE_MAXIMIZED, 0); } else { if (toplevel->have_maxvert && toplevel->have_maxhorz) gdk_synthesize_window_state (window, 0, GDK_WINDOW_STATE_MAXIMIZED); } } static void gdk_check_wm_desktop_changed (GdkWindow *window) { GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (window); GdkDisplay *display = GDK_WINDOW_DISPLAY (window); Atom type; gint format; gulong nitems; gulong bytes_after; guchar *data; gulong *desktop; type = None; gdk_error_trap_push (); XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), GDK_WINDOW_XID (window), gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_DESKTOP"), 0, G_MAXLONG, False, XA_CARDINAL, &type, &format, &nitems, &bytes_after, &data); gdk_error_trap_pop_ignored (); if (type != None) { desktop = (gulong *)data; toplevel->on_all_desktops = (*desktop == 0xFFFFFFFF); XFree (desktop); } else toplevel->on_all_desktops = FALSE; do_net_wm_state_changes (window); } static void gdk_check_wm_state_changed (GdkWindow *window) { GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (window); GdkDisplay *display = GDK_WINDOW_DISPLAY (window); Atom type; gint format; gulong nitems; gulong bytes_after; guchar *data; Atom *atoms = NULL; gulong i; gboolean had_sticky = toplevel->have_sticky; toplevel->have_sticky = FALSE; toplevel->have_maxvert = FALSE; toplevel->have_maxhorz = FALSE; toplevel->have_fullscreen = FALSE; type = None; gdk_error_trap_push (); XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), GDK_WINDOW_XID (window), gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE"), 0, G_MAXLONG, False, XA_ATOM, &type, &format, &nitems, &bytes_after, &data); gdk_error_trap_pop_ignored (); if (type != None) { Atom sticky_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_STICKY"); Atom maxvert_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_MAXIMIZED_VERT"); Atom maxhorz_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_MAXIMIZED_HORZ"); Atom fullscreen_atom = gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE_FULLSCREEN"); atoms = (Atom *)data; i = 0; while (i < nitems) { if (atoms[i] == sticky_atom) toplevel->have_sticky = TRUE; else if (atoms[i] == maxvert_atom) toplevel->have_maxvert = TRUE; else if (atoms[i] == maxhorz_atom) toplevel->have_maxhorz = TRUE; else if (atoms[i] == fullscreen_atom) toplevel->have_fullscreen = TRUE; ++i; } XFree (atoms); } /* When have_sticky is turned on, we have to check the DESKTOP property * as well. */ if (toplevel->have_sticky && !had_sticky) gdk_check_wm_desktop_changed (window); else do_net_wm_state_changes (window); } static GdkWindow * get_event_window (GdkEventTranslator *translator, XEvent *xevent) { GdkDisplay *display; Window xwindow; display = (GdkDisplay *) translator; switch (xevent->type) { case DestroyNotify: xwindow = xevent->xdestroywindow.window; break; case UnmapNotify: xwindow = xevent->xunmap.window; break; case MapNotify: xwindow = xevent->xmap.window; break; case ConfigureNotify: xwindow = xevent->xconfigure.window; break; default: xwindow = xevent->xany.window; } return gdk_window_lookup_for_display (display, xwindow); } static gboolean gdk_display_x11_translate_event (GdkEventTranslator *translator, GdkDisplay *display, GdkEvent *event, XEvent *xevent) { GdkWindow *window; GdkWindowObject *window_private; GdkWindowImplX11 *window_impl = NULL; GdkScreen *screen = NULL; GdkScreenX11 *screen_x11 = NULL; GdkToplevelX11 *toplevel = NULL; GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display); gboolean return_val; Window xwindow = None; /* Find the GdkWindow that this event relates to. * Basically this means substructure events * are reported same as structure events */ window = get_event_window (translator, xevent); window_private = (GdkWindowObject *) window; if (window) { /* We may receive events such as NoExpose/GraphicsExpose * and ShmCompletion for pixmaps */ if (!GDK_IS_WINDOW (window)) return FALSE; screen = GDK_WINDOW_SCREEN (window); screen_x11 = GDK_SCREEN_X11 (screen); toplevel = _gdk_x11_window_get_toplevel (window); window_impl = GDK_WINDOW_IMPL_X11 (window_private->impl); xwindow = GDK_WINDOW_XID (window); g_object_ref (window); } event->any.window = window; event->any.send_event = xevent->xany.send_event ? TRUE : FALSE; if (window_private && GDK_WINDOW_DESTROYED (window)) { if (xevent->type != DestroyNotify) { return_val = FALSE; goto done; } } if (xevent->type == DestroyNotify) { int i, n; n = gdk_display_get_n_screens (display); for (i = 0; i < n; i++) { screen = gdk_display_get_screen (display, i); screen_x11 = GDK_SCREEN_X11 (screen); if (screen_x11->wmspec_check_window == xwindow) { screen_x11->wmspec_check_window = None; screen_x11->last_wmspec_check_time = 0; g_free (screen_x11->window_manager_name); screen_x11->window_manager_name = g_strdup ("unknown"); /* careful, reentrancy */ _gdk_x11_screen_window_manager_changed (screen); return_val = FALSE; goto done; } } } /* We do a "manual" conversion of the XEvent to a * GdkEvent. The structures are mostly the same so * the conversion is fairly straightforward. We also * optionally print debugging info regarding events * received. */ return_val = TRUE; switch (xevent->type) { case KeymapNotify: GDK_NOTE (EVENTS, g_message ("keymap notify")); /* Not currently handled */ return_val = FALSE; break; case Expose: GDK_NOTE (EVENTS, g_message ("expose:\t\twindow: %ld %d x,y: %d %d w,h: %d %d%s", xevent->xexpose.window, xevent->xexpose.count, xevent->xexpose.x, xevent->xexpose.y, xevent->xexpose.width, xevent->xexpose.height, event->any.send_event ? " (send)" : "")); if (window_private == NULL) { return_val = FALSE; break; } { GdkRectangle expose_rect; expose_rect.x = xevent->xexpose.x; expose_rect.y = xevent->xexpose.y; expose_rect.width = xevent->xexpose.width; expose_rect.height = xevent->xexpose.height; _gdk_window_process_expose (window, xevent->xexpose.serial, &expose_rect); return_val = FALSE; } break; case GraphicsExpose: { GdkRectangle expose_rect; GDK_NOTE (EVENTS, g_message ("graphics expose:\tdrawable: %ld", xevent->xgraphicsexpose.drawable)); if (window_private == NULL) { return_val = FALSE; break; } expose_rect.x = xevent->xgraphicsexpose.x; expose_rect.y = xevent->xgraphicsexpose.y; expose_rect.width = xevent->xgraphicsexpose.width; expose_rect.height = xevent->xgraphicsexpose.height; _gdk_window_process_expose (window, xevent->xgraphicsexpose.serial, &expose_rect); return_val = FALSE; } break; case NoExpose: GDK_NOTE (EVENTS, g_message ("no expose:\t\tdrawable: %ld", xevent->xnoexpose.drawable)); event->no_expose.type = GDK_NO_EXPOSE; event->no_expose.window = window; break; case VisibilityNotify: #ifdef G_ENABLE_DEBUG if (_gdk_debug_flags & GDK_DEBUG_EVENTS) switch (xevent->xvisibility.state) { case VisibilityFullyObscured: g_message ("visibility notify:\twindow: %ld none", xevent->xvisibility.window); break; case VisibilityPartiallyObscured: g_message ("visibility notify:\twindow: %ld partial", xevent->xvisibility.window); break; case VisibilityUnobscured: g_message ("visibility notify:\twindow: %ld full", xevent->xvisibility.window); break; } #endif /* G_ENABLE_DEBUG */ if (window_private == NULL) { return_val = FALSE; break; } event->visibility.type = GDK_VISIBILITY_NOTIFY; event->visibility.window = window; switch (xevent->xvisibility.state) { case VisibilityFullyObscured: event->visibility.state = GDK_VISIBILITY_FULLY_OBSCURED; break; case VisibilityPartiallyObscured: event->visibility.state = GDK_VISIBILITY_PARTIAL; break; case VisibilityUnobscured: event->visibility.state = GDK_VISIBILITY_UNOBSCURED; break; } break; case CreateNotify: GDK_NOTE (EVENTS, g_message ("create notify:\twindow: %ld x,y: %d %d w,h: %d %d b-w: %d parent: %ld ovr: %d", xevent->xcreatewindow.window, xevent->xcreatewindow.x, xevent->xcreatewindow.y, xevent->xcreatewindow.width, xevent->xcreatewindow.height, xevent->xcreatewindow.border_width, xevent->xcreatewindow.parent, xevent->xcreatewindow.override_redirect)); /* not really handled */ break; case DestroyNotify: GDK_NOTE (EVENTS, g_message ("destroy notify:\twindow: %ld", xevent->xdestroywindow.window)); /* Ignore DestroyNotify from SubstructureNotifyMask */ if (xevent->xdestroywindow.window == xevent->xdestroywindow.event) { event->any.type = GDK_DESTROY; event->any.window = window; return_val = window_private && !GDK_WINDOW_DESTROYED (window); if (window && GDK_WINDOW_XID (window) != screen_x11->xroot_window) gdk_window_destroy_notify (window); } else return_val = FALSE; break; case UnmapNotify: GDK_NOTE (EVENTS, g_message ("unmap notify:\t\twindow: %ld", xevent->xmap.window)); event->any.type = GDK_UNMAP; event->any.window = window; /* If we are shown (not withdrawn) and get an unmap, it means we * were iconified in the X sense. If we are withdrawn, and get * an unmap, it means we hid the window ourselves, so we * will have already flipped the iconified bit off. */ if (window) { if (GDK_WINDOW_IS_MAPPED (window)) gdk_synthesize_window_state (window, 0, GDK_WINDOW_STATE_ICONIFIED); _gdk_xgrab_check_unmap (window, xevent->xany.serial); } break; case MapNotify: GDK_NOTE (EVENTS, g_message ("map notify:\t\twindow: %ld", xevent->xmap.window)); event->any.type = GDK_MAP; event->any.window = window; /* Unset iconified if it was set */ if (window && (((GdkWindowObject*)window)->state & GDK_WINDOW_STATE_ICONIFIED)) gdk_synthesize_window_state (window, GDK_WINDOW_STATE_ICONIFIED, 0); break; case ReparentNotify: GDK_NOTE (EVENTS, g_message ("reparent notify:\twindow: %ld x,y: %d %d parent: %ld ovr: %d", xevent->xreparent.window, xevent->xreparent.x, xevent->xreparent.y, xevent->xreparent.parent, xevent->xreparent.override_redirect)); /* Not currently handled */ return_val = FALSE; break; case ConfigureNotify: GDK_NOTE (EVENTS, g_message ("configure notify:\twindow: %ld x,y: %d %d w,h: %d %d b-w: %d above: %ld ovr: %d%s", xevent->xconfigure.window, xevent->xconfigure.x, xevent->xconfigure.y, xevent->xconfigure.width, xevent->xconfigure.height, xevent->xconfigure.border_width, xevent->xconfigure.above, xevent->xconfigure.override_redirect, !window ? " (discarding)" : GDK_WINDOW_TYPE (window) == GDK_WINDOW_CHILD ? " (discarding child)" : xevent->xconfigure.event != xevent->xconfigure.window ? " (discarding substructure)" : "")); if (window && GDK_WINDOW_TYPE (window) == GDK_WINDOW_ROOT) { window_private->width = xevent->xconfigure.width; window_private->height = xevent->xconfigure.height; _gdk_window_update_size (window); _gdk_x11_drawable_update_size (window_private->impl); _gdk_x11_screen_size_changed (screen, xevent); } #ifdef HAVE_XSYNC if (toplevel && display_x11->use_sync && !XSyncValueIsZero (toplevel->pending_counter_value)) { toplevel->current_counter_value = toplevel->pending_counter_value; XSyncIntToValue (&toplevel->pending_counter_value, 0); } #endif if (!window || xevent->xconfigure.event != xevent->xconfigure.window || GDK_WINDOW_TYPE (window) == GDK_WINDOW_CHILD || GDK_WINDOW_TYPE (window) == GDK_WINDOW_ROOT) return_val = FALSE; else { event->configure.type = GDK_CONFIGURE; event->configure.window = window; event->configure.width = xevent->xconfigure.width; event->configure.height = xevent->xconfigure.height; if (!xevent->xconfigure.send_event && !xevent->xconfigure.override_redirect && !GDK_WINDOW_DESTROYED (window)) { gint tx = 0; gint ty = 0; Window child_window = 0; gdk_error_trap_push (); if (XTranslateCoordinates (GDK_WINDOW_XDISPLAY (window), GDK_WINDOW_XID (window), screen_x11->xroot_window, 0, 0, &tx, &ty, &child_window)) { event->configure.x = tx; event->configure.y = ty; } gdk_error_trap_pop_ignored (); } else { event->configure.x = xevent->xconfigure.x; event->configure.y = xevent->xconfigure.y; } window_private->x = event->configure.x; window_private->y = event->configure.y; window_private->width = xevent->xconfigure.width; window_private->height = xevent->xconfigure.height; _gdk_window_update_size (window); _gdk_x11_drawable_update_size (window_private->impl); if (window_private->resize_count >= 1) { window_private->resize_count -= 1; if (window_private->resize_count == 0) _gdk_moveresize_configure_done (display, window); } } break; case PropertyNotify: GDK_NOTE (EVENTS, g_message ("property notify:\twindow: %ld, atom(%ld): %s%s%s", xevent->xproperty.window, xevent->xproperty.atom, "\"", gdk_x11_get_xatom_name_for_display (display, xevent->xproperty.atom), "\"")); if (window_private == NULL) { return_val = FALSE; break; } /* We compare with the serial of the last time we mapped the * window to avoid refetching properties that we set ourselves */ if (toplevel && xevent->xproperty.serial >= toplevel->map_serial) { if (xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE")) gdk_check_wm_state_changed (window); if (xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_DESKTOP")) gdk_check_wm_desktop_changed (window); } if (window_private->event_mask & GDK_PROPERTY_CHANGE_MASK) { event->property.type = GDK_PROPERTY_NOTIFY; event->property.window = window; event->property.atom = gdk_x11_xatom_to_atom_for_display (display, xevent->xproperty.atom); event->property.time = xevent->xproperty.time; event->property.state = xevent->xproperty.state; } else return_val = FALSE; break; case SelectionClear: GDK_NOTE (EVENTS, g_message ("selection clear:\twindow: %ld", xevent->xproperty.window)); if (_gdk_selection_filter_clear_event (&xevent->xselectionclear)) { event->selection.type = GDK_SELECTION_CLEAR; event->selection.window = window; event->selection.selection = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionclear.selection); event->selection.time = xevent->xselectionclear.time; } else return_val = FALSE; break; case SelectionRequest: GDK_NOTE (EVENTS, g_message ("selection request:\twindow: %ld", xevent->xproperty.window)); event->selection.type = GDK_SELECTION_REQUEST; event->selection.window = window; event->selection.selection = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionrequest.selection); event->selection.target = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionrequest.target); event->selection.property = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionrequest.property); event->selection.requestor = xevent->xselectionrequest.requestor; event->selection.time = xevent->xselectionrequest.time; break; case SelectionNotify: GDK_NOTE (EVENTS, g_message ("selection notify:\twindow: %ld", xevent->xproperty.window)); event->selection.type = GDK_SELECTION_NOTIFY; event->selection.window = window; event->selection.selection = gdk_x11_xatom_to_atom_for_display (display, xevent->xselection.selection); event->selection.target = gdk_x11_xatom_to_atom_for_display (display, xevent->xselection.target); if (xevent->xselection.property == None) event->selection.property = GDK_NONE; else event->selection.property = gdk_x11_xatom_to_atom_for_display (display, xevent->xselection.property); event->selection.time = xevent->xselection.time; break; case ColormapNotify: GDK_NOTE (EVENTS, g_message ("colormap notify:\twindow: %ld", xevent->xcolormap.window)); /* Not currently handled */ return_val = FALSE; break; case ClientMessage: { GList *tmp_list; GdkFilterReturn result = GDK_FILTER_CONTINUE; GdkAtom message_type = gdk_x11_xatom_to_atom_for_display (display, xevent->xclient.message_type); GDK_NOTE (EVENTS, g_message ("client message:\twindow: %ld", xevent->xclient.window)); tmp_list = display_x11->client_filters; while (tmp_list) { GdkClientFilter *filter = tmp_list->data; tmp_list = tmp_list->next; if (filter->type == message_type) { result = (*filter->function) (xevent, event, filter->data); if (result != GDK_FILTER_CONTINUE) break; } } switch (result) { case GDK_FILTER_REMOVE: return_val = FALSE; break; case GDK_FILTER_TRANSLATE: return_val = TRUE; break; case GDK_FILTER_CONTINUE: /* Send unknown ClientMessage's on to Gtk for it to use */ if (window_private == NULL) { return_val = FALSE; } else { event->client.type = GDK_CLIENT_EVENT; event->client.window = window; event->client.message_type = message_type; event->client.data_format = xevent->xclient.format; memcpy(&event->client.data, &xevent->xclient.data, sizeof(event->client.data)); } break; } } break; case MappingNotify: GDK_NOTE (EVENTS, g_message ("mapping notify")); /* Let XLib know that there is a new keyboard mapping. */ XRefreshKeyboardMapping (&xevent->xmapping); _gdk_keymap_keys_changed (display); return_val = FALSE; break; default: #ifdef HAVE_XFIXES if (xevent->type - display_x11->xfixes_event_base == XFixesSelectionNotify) { XFixesSelectionNotifyEvent *selection_notify = (XFixesSelectionNotifyEvent *)xevent; _gdk_x11_screen_process_owner_change (screen, xevent); event->owner_change.type = GDK_OWNER_CHANGE; event->owner_change.window = window; event->owner_change.owner = selection_notify->owner; event->owner_change.reason = selection_notify->subtype; event->owner_change.selection = gdk_x11_xatom_to_atom_for_display (display, selection_notify->selection); event->owner_change.time = selection_notify->timestamp; event->owner_change.selection_time = selection_notify->selection_timestamp; return_val = TRUE; } else #endif #ifdef HAVE_RANDR if (xevent->type - display_x11->xrandr_event_base == RRScreenChangeNotify || xevent->type - display_x11->xrandr_event_base == RRNotify) { if (screen) _gdk_x11_screen_size_changed (screen, xevent); } else #endif #if defined(HAVE_XCOMPOSITE) && defined (HAVE_XDAMAGE) && defined (HAVE_XFIXES) if (display_x11->have_xdamage && window_private && window_private->composited && xevent->type == display_x11->xdamage_event_base + XDamageNotify && ((XDamageNotifyEvent *) xevent)->damage == window_impl->damage) { XDamageNotifyEvent *damage_event = (XDamageNotifyEvent *) xevent; XserverRegion repair; GdkRectangle rect; rect.x = window_private->x + damage_event->area.x; rect.y = window_private->y + damage_event->area.y; rect.width = damage_event->area.width; rect.height = damage_event->area.height; repair = XFixesCreateRegion (display_x11->xdisplay, &damage_event->area, 1); XDamageSubtract (display_x11->xdisplay, window_impl->damage, repair, None); XFixesDestroyRegion (display_x11->xdisplay, repair); if (window_private->parent != NULL) _gdk_window_process_expose (GDK_WINDOW (window_private->parent), damage_event->serial, &rect); return_val = TRUE; } else #endif #ifdef HAVE_XKB if (xevent->type == display_x11->xkb_event_type) { XkbEvent *xkb_event = (XkbEvent *) xevent; switch (xkb_event->any.xkb_type) { case XkbNewKeyboardNotify: case XkbMapNotify: _gdk_keymap_keys_changed (display); return_val = FALSE; break; case XkbStateNotify: _gdk_keymap_state_changed (display, xevent); break; } } else #endif return_val = FALSE; } done: if (return_val) { if (event->any.window) g_object_ref (event->any.window); } else { /* Mark this event as having no resources to be freed */ event->any.window = NULL; event->any.type = GDK_NOTHING; } if (window) g_object_unref (window); return return_val; } static GdkFilterReturn gdk_wm_protocols_filter (GdkXEvent *xev, GdkEvent *event, gpointer data) { XEvent *xevent = (XEvent *)xev; GdkWindow *win = event->any.window; GdkDisplay *display; Atom atom; if (!win) return GDK_FILTER_REMOVE; display = GDK_WINDOW_DISPLAY (win); atom = (Atom)xevent->xclient.data.l[0]; if (atom == gdk_x11_get_xatom_by_name_for_display (display, "WM_DELETE_WINDOW")) { /* The delete window request specifies a window * to delete. We don't actually destroy the * window because "it is only a request". (The * window might contain vital data that the * program does not want destroyed). Instead * the event is passed along to the program, * which should then destroy the window. */ GDK_NOTE (EVENTS, g_message ("delete window:\t\twindow: %ld", xevent->xclient.window)); event->any.type = GDK_DELETE; gdk_x11_window_set_user_time (win, xevent->xclient.data.l[1]); return GDK_FILTER_TRANSLATE; } else if (atom == gdk_x11_get_xatom_by_name_for_display (display, "WM_TAKE_FOCUS")) { GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (event->any.window); GdkWindowObject *private = (GdkWindowObject *)win; /* There is no way of knowing reliably whether we are viewable; * _gdk_x11_set_input_focus_safe() traps errors asynchronously. */ if (toplevel && private->accept_focus) _gdk_x11_set_input_focus_safe (display, toplevel->focus_window, RevertToParent, xevent->xclient.data.l[1]); return GDK_FILTER_REMOVE; } else if (atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_PING") && !_gdk_x11_display_is_root_window (display, xevent->xclient.window)) { XClientMessageEvent xclient = xevent->xclient; xclient.window = GDK_WINDOW_XROOTWIN (win); XSendEvent (GDK_WINDOW_XDISPLAY (win), xclient.window, False, SubstructureRedirectMask | SubstructureNotifyMask, (XEvent *)&xclient); return GDK_FILTER_REMOVE; } else if (atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_SYNC_REQUEST") && GDK_DISPLAY_X11 (display)->use_sync) { GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (event->any.window); if (toplevel) { #ifdef HAVE_XSYNC XSyncIntsToValue (&toplevel->pending_counter_value, xevent->xclient.data.l[2], xevent->xclient.data.l[3]); #endif } return GDK_FILTER_REMOVE; } return GDK_FILTER_CONTINUE; } static void _gdk_event_init (GdkDisplay *display) { GdkDisplayX11 *display_x11; GdkDeviceManager *device_manager; display_x11 = GDK_DISPLAY_X11 (display); display_x11->event_source = gdk_event_source_new (display); gdk_event_source_add_translator ((GdkEventSource *) display_x11->event_source, GDK_EVENT_TRANSLATOR (display)); device_manager = gdk_display_get_device_manager (display); gdk_event_source_add_translator ((GdkEventSource *) display_x11->event_source, GDK_EVENT_TRANSLATOR (device_manager)); gdk_display_add_client_message_filter (display, gdk_atom_intern_static_string ("WM_PROTOCOLS"), gdk_wm_protocols_filter, NULL); } static void _gdk_input_init (GdkDisplay *display) { GdkDisplayX11 *display_x11; GdkDeviceManager *device_manager; GdkDevice *device; GList *list, *l; display_x11 = GDK_DISPLAY_X11 (display); device_manager = gdk_display_get_device_manager (display); /* For backwards compatibility, just add * floating devices that are not keyboards. */ list = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING); for (l = list; l; l = l->next) { device = l->data; if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD) continue; display_x11->input_devices = g_list_prepend (display_x11->input_devices, g_object_ref (l->data)); } g_list_free (list); /* Now set "core" pointer to the first * master device that is a pointer. */ list = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER); for (l = list; l; l = l->next) { device = list->data; if (gdk_device_get_source (device) != GDK_SOURCE_MOUSE) continue; display->core_pointer = device; break; } /* Add the core pointer to the devices list */ display_x11->input_devices = g_list_prepend (display_x11->input_devices, g_object_ref (display->core_pointer)); g_list_free (list); } /** * 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) { Display *xdisplay; GdkDisplay *display; GdkDisplayX11 *display_x11; GdkWindowAttr attr; gint argc; gchar *argv[1]; const char *sm_client_id; XClassHint *class_hint; gulong pid; gint i; gint ignore; gint maj, min; xdisplay = XOpenDisplay (display_name); if (!xdisplay) return NULL; display = g_object_new (GDK_TYPE_DISPLAY_X11, NULL); display_x11 = GDK_DISPLAY_X11 (display); display_x11->xdisplay = xdisplay; #ifdef HAVE_X11R6 /* Set up handlers for Xlib internal connections */ XAddConnectionWatch (xdisplay, gdk_internal_connection_watch, NULL); #endif /* HAVE_X11R6 */ _gdk_x11_precache_atoms (display, precache_atoms, G_N_ELEMENTS (precache_atoms)); /* RandR must be initialized before we initialize the screens */ display_x11->have_randr13 = FALSE; #ifdef HAVE_RANDR if (XRRQueryExtension (display_x11->xdisplay, &display_x11->xrandr_event_base, &ignore)) { int major, minor; XRRQueryVersion (display_x11->xdisplay, &major, &minor); if ((major == 1 && minor >= 3) || major > 1) display_x11->have_randr13 = TRUE; gdk_x11_register_standard_event_type (display, display_x11->xrandr_event_base, RRNumberEvents); } #endif /* initialize the display's screens */ display_x11->screens = g_new (GdkScreen *, ScreenCount (display_x11->xdisplay)); for (i = 0; i < ScreenCount (display_x11->xdisplay); i++) display_x11->screens[i] = _gdk_x11_screen_new (display, i); /* We need to initialize events after we have the screen * structures in places */ for (i = 0; i < ScreenCount (display_x11->xdisplay); i++) _gdk_screen_x11_events_init (display_x11->screens[i]); /*set the default screen */ display_x11->default_screen = display_x11->screens[DefaultScreen (display_x11->xdisplay)]; display->device_manager = _gdk_device_manager_new (display); _gdk_event_init (display); attr.window_type = GDK_WINDOW_TOPLEVEL; attr.wclass = GDK_INPUT_OUTPUT; attr.x = 10; attr.y = 10; attr.width = 10; attr.height = 10; attr.event_mask = 0; display_x11->leader_gdk_window = gdk_window_new (GDK_SCREEN_X11 (display_x11->default_screen)->root_window, &attr, GDK_WA_X | GDK_WA_Y); (_gdk_x11_window_get_toplevel (display_x11->leader_gdk_window))->is_leader = TRUE; display_x11->leader_window = GDK_WINDOW_XID (display_x11->leader_gdk_window); display_x11->leader_window_title_set = FALSE; #ifdef HAVE_XFIXES if (XFixesQueryExtension (display_x11->xdisplay, &display_x11->xfixes_event_base, &ignore)) { display_x11->have_xfixes = TRUE; gdk_x11_register_standard_event_type (display, display_x11->xfixes_event_base, XFixesNumberEvents); } else #endif display_x11->have_xfixes = FALSE; #ifdef HAVE_XCOMPOSITE if (XCompositeQueryExtension (display_x11->xdisplay, &ignore, &ignore)) { int major, minor; XCompositeQueryVersion (display_x11->xdisplay, &major, &minor); /* Prior to Composite version 0.4, composited windows clipped their * parents, so you had to use IncludeInferiors to draw to the parent * This isn't useful for our purposes, so require 0.4 */ display_x11->have_xcomposite = major > 0 || (major == 0 && minor >= 4); } else #endif display_x11->have_xcomposite = FALSE; #ifdef HAVE_XDAMAGE if (XDamageQueryExtension (display_x11->xdisplay, &display_x11->xdamage_event_base, &ignore)) { display_x11->have_xdamage = TRUE; gdk_x11_register_standard_event_type (display, display_x11->xdamage_event_base, XDamageNumberEvents); } else #endif display_x11->have_xdamage = FALSE; display_x11->have_shapes = FALSE; display_x11->have_input_shapes = FALSE; if (XShapeQueryExtension (GDK_DISPLAY_XDISPLAY (display), &display_x11->shape_event_base, &ignore)) { display_x11->have_shapes = TRUE; #ifdef ShapeInput if (XShapeQueryVersion (GDK_DISPLAY_XDISPLAY (display), &maj, &min)) display_x11->have_input_shapes = (maj == 1 && min >= 1); #endif } display_x11->trusted_client = TRUE; { Window root, child; int rootx, rooty, winx, winy; unsigned int xmask; gdk_error_trap_push (); XQueryPointer (display_x11->xdisplay, GDK_SCREEN_X11 (display_x11->default_screen)->xroot_window, &root, &child, &rootx, &rooty, &winx, &winy, &xmask); if (G_UNLIKELY (gdk_error_trap_pop () == BadWindow)) { g_warning ("Connection to display %s appears to be untrusted. Pointer and keyboard grabs and inter-client communication may not work as expected.", gdk_display_get_name (display)); display_x11->trusted_client = FALSE; } } if (_gdk_synchronize) XSynchronize (display_x11->xdisplay, True); class_hint = XAllocClassHint(); class_hint->res_name = g_get_prgname (); class_hint->res_class = (char *)gdk_get_program_class (); /* XmbSetWMProperties sets the RESOURCE_NAME environment variable * from argv[0], so we just synthesize an argument array here. */ argc = 1; argv[0] = g_get_prgname (); XmbSetWMProperties (display_x11->xdisplay, display_x11->leader_window, NULL, NULL, argv, argc, NULL, NULL, class_hint); XFree (class_hint); sm_client_id = _gdk_get_sm_client_id (); if (sm_client_id) _gdk_windowing_display_set_sm_client_id (display, sm_client_id); pid = getpid (); XChangeProperty (display_x11->xdisplay, display_x11->leader_window, gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_PID"), XA_CARDINAL, 32, PropModeReplace, (guchar *) & pid, 1); /* We don't yet know a valid time. */ display_x11->user_time = 0; #ifdef HAVE_XKB { gint xkb_major = XkbMajorVersion; gint xkb_minor = XkbMinorVersion; if (XkbLibraryVersion (&xkb_major, &xkb_minor)) { xkb_major = XkbMajorVersion; xkb_minor = XkbMinorVersion; if (XkbQueryExtension (display_x11->xdisplay, NULL, &display_x11->xkb_event_type, NULL, &xkb_major, &xkb_minor)) { Bool detectable_autorepeat_supported; display_x11->use_xkb = TRUE; XkbSelectEvents (display_x11->xdisplay, XkbUseCoreKbd, XkbNewKeyboardNotifyMask | XkbMapNotifyMask | XkbStateNotifyMask, XkbNewKeyboardNotifyMask | XkbMapNotifyMask | XkbStateNotifyMask); /* keep this in sync with _gdk_keymap_state_changed() */ XkbSelectEventDetails (display_x11->xdisplay, XkbUseCoreKbd, XkbStateNotify, XkbAllStateComponentsMask, XkbGroupLockMask|XkbModifierLockMask); XkbSetDetectableAutoRepeat (display_x11->xdisplay, True, &detectable_autorepeat_supported); GDK_NOTE (MISC, g_message ("Detectable autorepeat %s.", detectable_autorepeat_supported ? "supported" : "not supported")); display_x11->have_xkb_autorepeat = detectable_autorepeat_supported; } } } #endif display_x11->use_sync = FALSE; #ifdef HAVE_XSYNC { int major, minor; int error_base, event_base; if (XSyncQueryExtension (display_x11->xdisplay, &event_base, &error_base) && XSyncInitialize (display_x11->xdisplay, &major, &minor)) display_x11->use_sync = TRUE; } #endif _gdk_input_init (display); _gdk_dnd_init (display); for (i = 0; i < ScreenCount (display_x11->xdisplay); i++) _gdk_x11_screen_setup (display_x11->screens[i]); g_signal_emit_by_name (display, "opened"); g_signal_emit_by_name (gdk_display_manager_get (), "display-opened", display); return display; } #ifdef HAVE_X11R6 /* * XLib internal connection handling */ typedef struct _GdkInternalConnection GdkInternalConnection; struct _GdkInternalConnection { gint fd; GSource *source; Display *display; }; static gboolean process_internal_connection (GIOChannel *gioc, GIOCondition cond, gpointer data) { GdkInternalConnection *connection = (GdkInternalConnection *)data; GDK_THREADS_ENTER (); XProcessInternalConnection ((Display*)connection->display, connection->fd); GDK_THREADS_LEAVE (); return TRUE; } gulong _gdk_windowing_window_get_next_serial (GdkDisplay *display) { return NextRequest (GDK_DISPLAY_XDISPLAY (display)); } static GdkInternalConnection * gdk_add_connection_handler (Display *display, guint fd) { GIOChannel *io_channel; GdkInternalConnection *connection; connection = g_new (GdkInternalConnection, 1); connection->fd = fd; connection->display = display; io_channel = g_io_channel_unix_new (fd); connection->source = g_io_create_watch (io_channel, G_IO_IN); g_source_set_callback (connection->source, (GSourceFunc)process_internal_connection, connection, NULL); g_source_attach (connection->source, NULL); g_io_channel_unref (io_channel); return connection; } static void gdk_remove_connection_handler (GdkInternalConnection *connection) { g_source_destroy (connection->source); g_free (connection); } static void gdk_internal_connection_watch (Display *display, XPointer arg, gint fd, gboolean opening, XPointer *watch_data) { if (opening) *watch_data = (XPointer)gdk_add_connection_handler (display, fd); else gdk_remove_connection_handler ((GdkInternalConnection *)*watch_data); } #endif /* HAVE_X11R6 */ /** * 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) { g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL); return (gchar *) DisplayString (GDK_DISPLAY_X11 (display)->xdisplay); } /** * 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) { g_return_val_if_fail (GDK_IS_DISPLAY (display), 0); return ScreenCount (GDK_DISPLAY_X11 (display)->xdisplay); } /** * 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) { g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL); g_return_val_if_fail (ScreenCount (GDK_DISPLAY_X11 (display)->xdisplay) > screen_num, NULL); return GDK_DISPLAY_X11 (display)->screens[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) { g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL); return GDK_DISPLAY_X11 (display)->default_screen; } gboolean _gdk_x11_display_is_root_window (GdkDisplay *display, Window xroot_window) { GdkDisplayX11 *display_x11; gint i; g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE); display_x11 = GDK_DISPLAY_X11 (display); for (i = 0; i < ScreenCount (display_x11->xdisplay); i++) { if (GDK_SCREEN_XROOTWIN (display_x11->screens[i]) == xroot_window) return TRUE; } return FALSE; } struct XPointerUngrabInfo { GdkDisplay *display; guint32 time; }; static void device_ungrab_callback (GdkDisplay *display, gpointer data, gulong serial) { GdkDevice *device = data; _gdk_display_device_grab_update (display, device, serial); } #define XSERVER_TIME_IS_LATER(time1, time2) \ ( (( time1 > time2 ) && ( time1 - time2 < ((guint32)-1)/2 )) || \ (( time1 < time2 ) && ( time2 - time1 > ((guint32)-1)/2 )) \ ) /** * gdk_device_ungrab: * @device: a #GdkDevice * @time_: a timestap (e.g. %GDK_CURRENT_TIME). * * Release any grab on @device. * * Since: 3.0 */ void gdk_device_ungrab (GdkDevice *device, guint32 time_) { GdkDisplay *display; Display *xdisplay; GdkDeviceGrabInfo *grab; unsigned long serial; g_return_if_fail (GDK_IS_DEVICE (device)); display = gdk_device_get_display (device); xdisplay = GDK_DISPLAY_XDISPLAY (display); serial = NextRequest (xdisplay); GDK_DEVICE_GET_CLASS (device)->ungrab (device, time_); XFlush (xdisplay); grab = _gdk_display_get_last_device_grab (display, device); if (grab && (time_ == GDK_CURRENT_TIME || grab->time == GDK_CURRENT_TIME || !XSERVER_TIME_IS_LATER (grab->time, time_))) { grab->serial_end = serial; _gdk_x11_roundtrip_async (display, device_ungrab_callback, device); } } /** * gdk_display_beep: * @display: a #GdkDisplay * * Emits a short beep on @display * * Since: 2.2 */ void gdk_display_beep (GdkDisplay *display) { g_return_if_fail (GDK_IS_DISPLAY (display)); #ifdef HAVE_XKB XkbBell (GDK_DISPLAY_XDISPLAY (display), None, 0, None); #else XBell (GDK_DISPLAY_XDISPLAY (display), 0); #endif } /** * 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) { g_return_if_fail (GDK_IS_DISPLAY (display)); XSync (GDK_DISPLAY_XDISPLAY (display), False); } /** * 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) { g_return_if_fail (GDK_IS_DISPLAY (display)); if (!display->closed) XFlush (GDK_DISPLAY_XDISPLAY (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) { g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL); return GDK_DISPLAY_X11 (display)->leader_gdk_window; } /** * gdk_x11_display_grab: * @display: a #GdkDisplay * * Call XGrabServer() on @display. * To ungrab the display again, use gdk_x11_display_ungrab(). * * gdk_x11_display_grab()/gdk_x11_display_ungrab() calls can be nested. * * Since: 2.2 **/ void gdk_x11_display_grab (GdkDisplay *display) { GdkDisplayX11 *display_x11; g_return_if_fail (GDK_IS_DISPLAY (display)); display_x11 = GDK_DISPLAY_X11 (display); if (display_x11->grab_count == 0) XGrabServer (display_x11->xdisplay); display_x11->grab_count++; } /** * gdk_x11_display_ungrab: * @display: a #GdkDisplay * * Ungrab @display after it has been grabbed with * gdk_x11_display_grab(). * * Since: 2.2 **/ void gdk_x11_display_ungrab (GdkDisplay *display) { GdkDisplayX11 *display_x11; g_return_if_fail (GDK_IS_DISPLAY (display)); display_x11 = GDK_DISPLAY_X11 (display);; g_return_if_fail (display_x11->grab_count > 0); display_x11->grab_count--; if (display_x11->grab_count == 0) { XUngrabServer (display_x11->xdisplay); XFlush (display_x11->xdisplay); } } static void gdk_display_x11_dispose (GObject *object) { GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (object); gint i; g_list_foreach (display_x11->input_devices, (GFunc) g_object_run_dispose, NULL); for (i = 0; i < ScreenCount (display_x11->xdisplay); i++) _gdk_screen_close (display_x11->screens[i]); if (display_x11->event_source) { g_source_destroy (display_x11->event_source); g_source_unref (display_x11->event_source); display_x11->event_source = NULL; } G_OBJECT_CLASS (_gdk_display_x11_parent_class)->dispose (object); } static void gdk_display_x11_finalize (GObject *object) { GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (object); gint i; /* Keymap */ if (display_x11->keymap) g_object_unref (display_x11->keymap); /* Free motif Dnd */ if (display_x11->motif_target_lists) { for (i = 0; i < display_x11->motif_n_target_lists; i++) g_list_free (display_x11->motif_target_lists[i]); g_free (display_x11->motif_target_lists); } _gdk_x11_cursor_display_finalize (GDK_DISPLAY_OBJECT(display_x11)); /* Atom Hashtable */ g_hash_table_destroy (display_x11->atom_from_virtual); g_hash_table_destroy (display_x11->atom_to_virtual); /* Leader Window */ XDestroyWindow (display_x11->xdisplay, display_x11->leader_window); /* list of filters for client messages */ g_list_foreach (display_x11->client_filters, (GFunc) g_free, NULL); g_list_free (display_x11->client_filters); /* List of event window extraction functions */ g_slist_foreach (display_x11->event_types, (GFunc)g_free, NULL); g_slist_free (display_x11->event_types); /* input GdkDevice list */ g_list_foreach (display_x11->input_devices, (GFunc) g_object_unref, NULL); g_list_free (display_x11->input_devices); /* input GdkWindow list */ g_list_foreach (display_x11->input_windows, (GFunc) g_free, NULL); g_list_free (display_x11->input_windows); /* Free all GdkScreens */ for (i = 0; i < ScreenCount (display_x11->xdisplay); i++) g_object_unref (display_x11->screens[i]); g_free (display_x11->screens); g_free (display_x11->startup_notification_id); /* X ID hashtable */ g_hash_table_destroy (display_x11->xid_ht); XCloseDisplay (display_x11->xdisplay); /* error traps */ while (display_x11->error_traps != NULL) { GdkErrorTrap *trap = display_x11->error_traps->data; display_x11->error_traps = g_slist_delete_link (display_x11->error_traps, display_x11->error_traps); if (trap->end_sequence == 0) g_warning ("Display finalized with an unpopped error trap"); g_slice_free (GdkErrorTrap, trap); } G_OBJECT_CLASS (_gdk_display_x11_parent_class)->finalize (object); } /** * gdk_x11_lookup_xdisplay: * @xdisplay: a pointer to an X Display * * Find the #GdkDisplay corresponding to @display, if any exists. * * Return value: (transfer none): the #GdkDisplay, if found, otherwise %NULL. * * Since: 2.2 **/ GdkDisplay * gdk_x11_lookup_xdisplay (Display *xdisplay) { GSList *tmp_list; for (tmp_list = _gdk_displays; tmp_list; tmp_list = tmp_list->next) { if (GDK_DISPLAY_XDISPLAY (tmp_list->data) == xdisplay) return tmp_list->data; } return NULL; } /** * _gdk_x11_display_screen_for_xrootwin: * @display: a #GdkDisplay * @xrootwin: window ID for one of of the screen's of the display. * * Given the root window ID of one of the screen's of a #GdkDisplay, * finds the screen. * * Return value: the #GdkScreen corresponding to @xrootwin, or %NULL. **/ GdkScreen * _gdk_x11_display_screen_for_xrootwin (GdkDisplay *display, Window xrootwin) { gint i; for (i = 0; i < ScreenCount (GDK_DISPLAY_X11 (display)->xdisplay); i++) { GdkScreen *screen = gdk_display_get_screen (display, i); if (GDK_SCREEN_XROOTWIN (screen) == xrootwin) return screen; } return NULL; } /** * gdk_x11_display_get_xdisplay: * @display: a #GdkDisplay * @returns: an X display. * * Returns the X display of a #GdkDisplay. * * Since: 2.2 */ Display * gdk_x11_display_get_xdisplay (GdkDisplay *display) { g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL); return GDK_DISPLAY_X11 (display)->xdisplay; } void _gdk_windowing_set_default_display (GdkDisplay *display) { GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display); const gchar *startup_id; if (!display) return; g_free (display_x11->startup_notification_id); display_x11->startup_notification_id = NULL; startup_id = g_getenv ("DESKTOP_STARTUP_ID"); if (startup_id && *startup_id != '\0') { if (!g_utf8_validate (startup_id, -1, NULL)) g_warning ("DESKTOP_STARTUP_ID contains invalid UTF-8"); else gdk_x11_display_set_startup_notification_id (display, startup_id); /* Clear the environment variable so it won't be inherited by * child processes and confuse things. */ g_unsetenv ("DESKTOP_STARTUP_ID"); } } static void broadcast_xmessage (GdkDisplay *display, const char *message_type, const char *message_type_begin, const char *message) { Display *xdisplay = GDK_DISPLAY_XDISPLAY (display); GdkScreen *screen = gdk_display_get_default_screen (display); GdkWindow *root_window = gdk_screen_get_root_window (screen); Window xroot_window = GDK_WINDOW_XID (root_window); Atom type_atom; Atom type_atom_begin; Window xwindow; if (!G_LIKELY (GDK_DISPLAY_X11 (display)->trusted_client)) return; { XSetWindowAttributes attrs; attrs.override_redirect = True; attrs.event_mask = PropertyChangeMask | StructureNotifyMask; xwindow = XCreateWindow (xdisplay, xroot_window, -100, -100, 1, 1, 0, CopyFromParent, CopyFromParent, (Visual *)CopyFromParent, CWOverrideRedirect | CWEventMask, &attrs); } type_atom = gdk_x11_get_xatom_by_name_for_display (display, message_type); type_atom_begin = gdk_x11_get_xatom_by_name_for_display (display, message_type_begin); { XClientMessageEvent xclient; const char *src; const char *src_end; char *dest; char *dest_end; memset(&xclient, 0, sizeof (xclient)); xclient.type = ClientMessage; xclient.message_type = type_atom_begin; xclient.display =xdisplay; xclient.window = xwindow; xclient.format = 8; src = message; src_end = message + strlen (message) + 1; /* +1 to include nul byte */ while (src != src_end) { dest = &xclient.data.b[0]; dest_end = dest + 20; while (dest != dest_end && src != src_end) { *dest = *src; ++dest; ++src; } while (dest != dest_end) { *dest = 0; ++dest; } XSendEvent (xdisplay, xroot_window, False, PropertyChangeMask, (XEvent *)&xclient); xclient.message_type = type_atom; } } XDestroyWindow (xdisplay, xwindow); XFlush (xdisplay); } /** * gdk_x11_display_broadcast_startup_message: * @display: a #GdkDisplay * @message_type: startup notification message type ("new", "change", * or "remove") * @...: a list of key/value pairs (as strings), terminated by a * %NULL key. (A %NULL value for a key will cause that key to be * skipped in the output.) * * Sends a startup notification message of type @message_type to * @display. * * This is a convenience function for use by code that implements the * freedesktop startup notification specification. Applications should * not normally need to call it directly. See the Startup * Notification Protocol specification for * definitions of the message types and keys that can be used. * * Since: 2.12 **/ void gdk_x11_display_broadcast_startup_message (GdkDisplay *display, const char *message_type, ...) { GString *message; va_list ap; const char *key, *value, *p; message = g_string_new (message_type); g_string_append_c (message, ':'); va_start (ap, message_type); while ((key = va_arg (ap, const char *))) { value = va_arg (ap, const char *); if (!value) continue; g_string_append_printf (message, " %s=\"", key); for (p = value; *p; p++) { switch (*p) { case ' ': case '"': case '\\': g_string_append_c (message, '\\'); break; } g_string_append_c (message, *p); } g_string_append_c (message, '\"'); } va_end (ap); broadcast_xmessage (display, "_NET_STARTUP_INFO", "_NET_STARTUP_INFO_BEGIN", message->str); g_string_free (message, TRUE); } /** * gdk_notify_startup_complete: * * Indicates to the GUI environment that the application has finished * loading. If the applications opens windows, this function is * normally called after opening the application's initial set of * windows. * * GTK+ will call this function automatically after opening the first * #GtkWindow unless gtk_window_set_auto_startup_notification() is called * to disable that feature. * * Since: 2.2 **/ void gdk_notify_startup_complete (void) { GdkDisplay *display; GdkDisplayX11 *display_x11; display = gdk_display_get_default (); if (!display) return; display_x11 = GDK_DISPLAY_X11 (display); if (display_x11->startup_notification_id == NULL) return; gdk_notify_startup_complete_with_id (display_x11->startup_notification_id); } /** * gdk_notify_startup_complete_with_id: * @startup_id: a startup-notification identifier, for which notification * process should be completed * * Indicates to the GUI environment that the application has finished * loading, using a given identifier. * * GTK+ will call this function automatically for #GtkWindow with custom * startup-notification identifier unless * gtk_window_set_auto_startup_notification() is called to disable * that feature. * * Since: 2.12 **/ void gdk_notify_startup_complete_with_id (const gchar* startup_id) { GdkDisplay *display; display = gdk_display_get_default (); if (!display) return; gdk_x11_display_broadcast_startup_message (display, "remove", "ID", startup_id, NULL); } /** * 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) { GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display); return display_x11->have_xfixes; } /** * 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) { #ifdef HAVE_XFIXES GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display); Atom atom; if (display_x11->have_xfixes) { atom = gdk_x11_atom_to_xatom_for_display (display, selection); XFixesSelectSelectionInput (display_x11->xdisplay, display_x11->leader_window, atom, XFixesSetSelectionOwnerNotifyMask | XFixesSelectionWindowDestroyNotifyMask | XFixesSelectionClientCloseNotifyMask); return TRUE; } else #endif return FALSE; } /** * 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) { Atom clipboard_manager; /* It might make sense to cache this */ clipboard_manager = gdk_x11_get_xatom_by_name_for_display (display, "CLIPBOARD_MANAGER"); return XGetSelectionOwner (GDK_DISPLAY_X11 (display)->xdisplay, clipboard_manager) != None; } /** * 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 * * http://www.freedesktop.org/Standards/clipboard-manager-spec. * * Since: 2.6 */ void gdk_display_store_clipboard (GdkDisplay *display, GdkWindow *clipboard_window, guint32 time_, const GdkAtom *targets, gint n_targets) { GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display); Atom clipboard_manager, save_targets; g_return_if_fail (GDK_WINDOW_IS_X11 (clipboard_window)); clipboard_manager = gdk_x11_get_xatom_by_name_for_display (display, "CLIPBOARD_MANAGER"); save_targets = gdk_x11_get_xatom_by_name_for_display (display, "SAVE_TARGETS"); gdk_error_trap_push (); if (XGetSelectionOwner (display_x11->xdisplay, clipboard_manager) != None) { Atom property_name = None; Atom *xatoms; int i; if (n_targets > 0) { property_name = gdk_x11_atom_to_xatom_for_display (display, _gdk_selection_property); xatoms = g_new (Atom, n_targets); for (i = 0; i < n_targets; i++) xatoms[i] = gdk_x11_atom_to_xatom_for_display (display, targets[i]); XChangeProperty (display_x11->xdisplay, GDK_WINDOW_XID (clipboard_window), property_name, XA_ATOM, 32, PropModeReplace, (guchar *)xatoms, n_targets); g_free (xatoms); } XConvertSelection (display_x11->xdisplay, clipboard_manager, save_targets, property_name, GDK_WINDOW_XID (clipboard_window), time_); } gdk_error_trap_pop_ignored (); } /** * gdk_x11_display_get_user_time: * @display: a #GdkDisplay * * Returns the timestamp of the last user interaction on * @display. The timestamp is taken from events caused * by user interaction such as key presses or pointer * movements. See gdk_x11_window_set_user_time(). * * Returns: the timestamp of the last user interaction * * Since: 2.8 */ guint32 gdk_x11_display_get_user_time (GdkDisplay *display) { return GDK_DISPLAY_X11 (display)->user_time; } /** * 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_X11 (display)->have_shapes; } /** * 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_X11 (display)->have_input_shapes; } /** * gdk_x11_display_get_startup_notification_id: * @display: a #GdkDisplay * * Gets the startup notification ID for a display. * * Returns: the startup notification ID for @display * * Since: 2.12 */ G_CONST_RETURN gchar * gdk_x11_display_get_startup_notification_id (GdkDisplay *display) { return GDK_DISPLAY_X11 (display)->startup_notification_id; } /** * gdk_x11_display_set_startup_notification_id: * @display: a #GdkDisplay * @startup_id: the startup notification ID (must be valid utf8) * * Sets the startup notification ID for a display. * * This is usually taken from the value of the DESKTOP_STARTUP_ID * environment variable, but in some cases (such as the application not * being launched using exec()) it can come from other sources. * * If the ID contains the string "_TIME" then the portion following that * string is taken to be the X11 timestamp of the event that triggered * the application to be launched and the GDK current event time is set * accordingly. * * The startup ID is also what is used to signal that the startup is * complete (for example, when opening a window or when calling * gdk_notify_startup_complete()). * * Since: 3.0 **/ void gdk_x11_display_set_startup_notification_id (GdkDisplay *display, const gchar *startup_id) { GdkDisplayX11 *display_x11; gchar *time_str; display_x11 = GDK_DISPLAY_X11 (display); g_free (display_x11->startup_notification_id); display_x11->startup_notification_id = g_strdup (startup_id); /* Find the launch time from the startup_id, if it's there. Newer spec * states that the startup_id is of the form _TIME */ time_str = g_strrstr (startup_id, "_TIME"); if (time_str != NULL) { gulong retval; gchar *end; errno = 0; /* Skip past the "_TIME" part */ time_str += 5; retval = strtoul (time_str, &end, 0); if (end != time_str && errno == 0) display_x11->user_time = retval; } /* Set the startup id on the leader window so it * applies to all windows we create on this display */ XChangeProperty (display_x11->xdisplay, display_x11->leader_window, gdk_x11_get_xatom_by_name_for_display (display, "_NET_STARTUP_ID"), gdk_x11_get_xatom_by_name_for_display (display, "UTF8_STRING"), 8, PropModeReplace, (guchar *)startup_id, strlen (startup_id)); } /** * 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) { GdkDisplayX11 *x11_display = GDK_DISPLAY_X11 (display); return x11_display->have_xcomposite && x11_display->have_xdamage && x11_display->have_xfixes; } /** * 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) { g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL); return GDK_DISPLAY_X11 (display)->input_devices; } /** * 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) { XEvent sev; g_return_val_if_fail(event != NULL, FALSE); /* Set up our event to send, with the exception of its target window */ sev.xclient.type = ClientMessage; sev.xclient.display = GDK_DISPLAY_XDISPLAY (display); sev.xclient.format = event->client.data_format; sev.xclient.window = winid; memcpy(&sev.xclient.data, &event->client.data, sizeof (sev.xclient.data)); sev.xclient.message_type = gdk_x11_atom_to_xatom_for_display (display, event->client.message_type); return _gdk_send_xevent (display, winid, False, NoEventMask, &sev); } /** * 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) { GdkClientFilter *filter; g_return_if_fail (GDK_IS_DISPLAY (display)); filter = g_new (GdkClientFilter, 1); filter->type = message_type; filter->function = func; filter->data = data; GDK_DISPLAY_X11(display)->client_filters = g_list_append (GDK_DISPLAY_X11 (display)->client_filters, filter); } /** * gdk_add_client_message_filter: * @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 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); } /* *-------------------------------------------------------------- * gdk_flush * * Flushes the Xlib output buffer and then waits * until all requests have been received and processed * by the X server. The only real use for this function * is in dealing with XShm. * * Arguments: * * Results: * * Side effects: * *-------------------------------------------------------------- */ void gdk_flush (void) { GSList *tmp_list = _gdk_displays; while (tmp_list) { XSync (GDK_DISPLAY_XDISPLAY (tmp_list->data), False); tmp_list = tmp_list->next; } } /** * gdk_x11_register_standard_event_type: * @display: a #GdkDisplay * @event_base: first event type code to register * @n_events: number of event type codes to register * * Registers interest in receiving extension events with type codes * between @event_base and event_base + n_events - 1. * The registered events must have the window field in the same place * as core X events (this is not the case for e.g. XKB extension events). * * If an event type is registered, events of this type will go through * global and window-specific filters (see gdk_window_add_filter()). * Unregistered events will only go through global filters. * GDK may register the events of some X extensions on its own. * * This function should only be needed in unusual circumstances, e.g. * when filtering XInput extension events on the root window. * * Since: 2.4 **/ void gdk_x11_register_standard_event_type (GdkDisplay *display, gint event_base, gint n_events) { GdkEventTypeX11 *event_type; GdkDisplayX11 *display_x11; display_x11 = GDK_DISPLAY_X11 (display); event_type = g_new (GdkEventTypeX11, 1); event_type->base = event_base; event_type->n_events = n_events; display_x11->event_types = g_slist_prepend (display_x11->event_types, event_type); } /* compare X sequence numbers handling wraparound */ #define SEQUENCE_COMPARE(a,op,b) (((long) (a) - (long) (b)) op 0) /* delivers an error event from the error handler in gdkmain-x11.c */ void _gdk_x11_display_error_event (GdkDisplay *display, XErrorEvent *error) { GdkDisplayX11 *display_x11; GSList *tmp_list; gboolean ignore; display_x11 = GDK_DISPLAY_X11 (display); ignore = FALSE; for (tmp_list = display_x11->error_traps; tmp_list != NULL; tmp_list = tmp_list->next) { GdkErrorTrap *trap; trap = tmp_list->data; if (SEQUENCE_COMPARE (trap->start_sequence, <=, error->serial) && (trap->end_sequence == 0 || SEQUENCE_COMPARE (trap->end_sequence, >, error->serial))) { ignore = TRUE; trap->error_code = error->error_code; break; /* only innermost trap gets the error code */ } } if (!ignore) { gchar buf[64]; gchar *msg; XGetErrorText (display_x11->xdisplay, error->error_code, buf, 63); msg = g_strdup_printf ("The program '%s' received an X Window System error.\n" "This probably reflects a bug in the program.\n" "The error was '%s'.\n" " (Details: serial %ld error_code %d request_code %d minor_code %d)\n" " (Note to programmers: normally, X errors are reported asynchronously;\n" " that is, you will receive the error a while after causing it.\n" " To debug your program, run it with the --sync command line\n" " option to change this behavior. You can then get a meaningful\n" " backtrace from your debugger if you break on the gdk_x_error() function.)", g_get_prgname (), buf, error->serial, error->error_code, error->request_code, error->minor_code); #ifdef G_ENABLE_DEBUG g_error ("%s", msg); #else /* !G_ENABLE_DEBUG */ g_warning ("%s\n", msg); exit (1); #endif /* G_ENABLE_DEBUG */ } } static void delete_outdated_error_traps (GdkDisplayX11 *display_x11) { GSList *tmp_list; gulong processed_sequence; processed_sequence = XLastKnownRequestProcessed (display_x11->xdisplay); tmp_list = display_x11->error_traps; while (tmp_list != NULL) { GdkErrorTrap *trap = tmp_list->data; if (trap->end_sequence != 0 && SEQUENCE_COMPARE (trap->end_sequence, <=, processed_sequence)) { GSList *free_me = tmp_list; tmp_list = tmp_list->next; display_x11->error_traps = g_slist_delete_link (display_x11->error_traps, free_me); g_slice_free (GdkErrorTrap, trap); } else { tmp_list = tmp_list->next; } } } /** * gdk_x11_display_error_trap_push: * @display: a #GdkDisplay * * Begins a range of X requests on @display for which X error events * will be ignored. Unignored errors (when no trap is pushed) will abort * the application. Use gdk_x11_display_error_trap_pop() or * gdk_x11_display_error_trap_pop_ignored()to lift a trap pushed * with this function. * * See also gdk_error_trap_push() to push a trap on all displays. * * Since: 3.0 */ void gdk_x11_display_error_trap_push (GdkDisplay *display) { GdkDisplayX11 *display_x11; GdkErrorTrap *trap; display_x11 = GDK_DISPLAY_X11 (display); delete_outdated_error_traps (display_x11); /* set up the Xlib callback to tell us about errors */ _gdk_x11_error_handler_push (); trap = g_slice_new0 (GdkErrorTrap); trap->start_sequence = XNextRequest (display_x11->xdisplay); trap->error_code = Success; display_x11->error_traps = g_slist_prepend (display_x11->error_traps, trap); } static gint gdk_x11_display_error_trap_pop_internal (GdkDisplay *display, gboolean need_code) { GdkDisplayX11 *display_x11; GdkErrorTrap *trap; GSList *tmp_list; int result; display_x11 = GDK_DISPLAY_X11 (display); g_return_val_if_fail (display_x11->error_traps != NULL, Success); /* Find the first trap that hasn't been popped already */ trap = NULL; /* quiet gcc */ for (tmp_list = display_x11->error_traps; tmp_list != NULL; tmp_list = tmp_list->next) { trap = tmp_list->data; if (trap->end_sequence == 0) break; } g_return_val_if_fail (trap != NULL, Success); g_assert (trap->end_sequence == 0); /* May need to sync to fill in trap->error_code if we care about * getting an error code. */ if (need_code) { gulong processed_sequence; gulong next_sequence; next_sequence = XNextRequest (display_x11->xdisplay); processed_sequence = XLastKnownRequestProcessed (display_x11->xdisplay); /* If our last request was already processed, there is no point * in syncing. i.e. if last request was a round trip (or even if * we got an event with the serial of a non-round-trip) */ if ((next_sequence - 1) != processed_sequence) { XSync (display_x11->xdisplay, False); } result = trap->error_code; } else { result = Success; } /* record end of trap, giving us a range of * error sequences we'll ignore. */ trap->end_sequence = XNextRequest (display_x11->xdisplay); /* remove the Xlib callback */ _gdk_x11_error_handler_pop (); /* we may already be outdated */ delete_outdated_error_traps (display_x11); return result; } /** * gdk_x11_display_error_trap_pop: * @display: the display * * Pops the error trap pushed by gdk_x11_display_error_trap_push(). * Will XSync() if necessary and will always block until * the error is known to have occurred or not occurred, * so the error code can be returned. * * If you don't need to use the return value, * gdk_x11_display_error_trap_pop_ignored() would be more efficient. * * See gdk_error_trap_pop() for the all-displays-at-once * equivalent. * * Since: 3.0 * * Return value: X error code or 0 on success */ gint gdk_x11_display_error_trap_pop (GdkDisplay *display) { g_return_val_if_fail (GDK_IS_DISPLAY_X11 (display), Success); return gdk_x11_display_error_trap_pop_internal (display, TRUE); } /** * gdk_x11_display_error_trap_pop_ignored: * @display: the display * * Pops the error trap pushed by gdk_x11_display_error_trap_push(). * Does not block to see if an error occurred; merely records the * range of requests to ignore errors for, and ignores those errors * if they arrive asynchronously. * * See gdk_error_trap_pop_ignored() for the all-displays-at-once * equivalent. * * Since: 3.0 */ void gdk_x11_display_error_trap_pop_ignored (GdkDisplay *display) { g_return_if_fail (GDK_IS_DISPLAY_X11 (display)); gdk_x11_display_error_trap_pop_internal (display, FALSE); }