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gtk/gdk/x11/gdkdisplay-x11.c
Benjamin Otte 1bb6f48bb3 gdk: Rename GdkWindowObject to GdkWindow 
... and remove most of the casting that used to be necessary.
2010-12-02 20:21:03 +01:00

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/* GDK - The GIMP Drawing Kit
* gdkdisplay-x11.c
*
* Copyright 2001 Sun Microsystems Inc.
* Copyright (C) 2004 Nokia Corporation
*
* Erwann Chenede <erwann.chenede@sun.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "gdkdisplay-x11.h"
#include "gdkx.h"
#include "gdkasync.h"
#include "gdkdisplay.h"
#include "gdkeventsource.h"
#include "gdkeventtranslator.h"
#include "gdkinternals.h"
#include "gdkscreen.h"
#include "gdkscreen-x11.h"
#include "gdkinternals.h"
#include "gdkdeviceprivate.h"
#include "gdkdevicemanager.h"
#include "xsettings-client.h"
#include <glib.h>
#include <glib/gprintf.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <X11/Xatom.h>
#ifdef HAVE_XKB
#include <X11/XKBlib.h>
#endif
#ifdef HAVE_XFIXES
#include <X11/extensions/Xfixes.h>
#endif
#include <X11/extensions/shape.h>
#ifdef HAVE_XCOMPOSITE
#include <X11/extensions/Xcomposite.h>
#endif
#ifdef HAVE_XDAMAGE
#include <X11/extensions/Xdamage.h>
#endif
#ifdef HAVE_RANDR
#include <X11/extensions/Xrandr.h>
#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;
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);
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->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 && 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 == 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 == 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 == 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 && !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 && (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)"
: window->window_type == GDK_WINDOW_CHILD
? " (discarding child)"
: xevent->xconfigure.event != xevent->xconfigure.window
? " (discarding substructure)"
: ""));
if (window && GDK_WINDOW_TYPE (window) == GDK_WINDOW_ROOT)
{
window->width = xevent->xconfigure.width;
window->height = xevent->xconfigure.height;
_gdk_window_update_size (window);
_gdk_x11_window_update_size (GDK_WINDOW_IMPL_X11 (window->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->x = event->configure.x;
window->y = event->configure.y;
window->width = xevent->xconfigure.width;
window->height = xevent->xconfigure.height;
_gdk_window_update_size (window);
_gdk_x11_window_update_size (GDK_WINDOW_IMPL_X11 (window->impl));
if (window->resize_count >= 1)
{
window->resize_count -= 1;
if (window->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 == 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->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 == 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 && window->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->x + damage_event->area.x;
rect.y = window->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->parent != NULL)
_gdk_window_process_expose (window->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);
/* There is no way of knowing reliably whether we are viewable;
* _gdk_x11_set_input_focus_safe() traps errors asynchronously.
*/
if (toplevel && win->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 <ulink
* url="http://standards.freedesktop.org/startup-notification-spec/startup-notification-latest.txt">Startup
* Notification Protocol specification</ulink> 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
* <ulink url="http://www.freedesktop.org/Standards/clipboard-manager-spec">
* http://www.freedesktop.org/Standards/clipboard-manager-spec</ulink>.
*
* Since: 2.6
*/
void
gdk_display_store_clipboard (GdkDisplay *display,
GdkWindow *clipboard_window,
guint32 time_,
const GdkAtom *targets,
gint n_targets)
{
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 <unique>_TIME<timestamp>
*/
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 <structfield>message_type</structfield> field of the
* XClientMessage event struct.
* @func: the function to call to process the event.
* @data: user data to pass to @func.
*
* Adds a filter to the default display to be called when X ClientMessage events
* are received. See gdk_display_add_client_message_filter().
**/
void
gdk_add_client_message_filter (GdkAtom message_type,
GdkFilterFunc func,
gpointer data)
{
gdk_display_add_client_message_filter (gdk_display_get_default (),
message_type, func, data);
}
/*
*--------------------------------------------------------------
* 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 <literal>event_base + n_events - 1</literal>.
* 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);
}
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