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gtk/gdk/x11/gdkdisplay-x11.c
Michael Meeks db88f084bc fix race between fetching owner of composit selection, and 
registering as a listener for changes; bug#594913
2009-09-14 15:33:59 +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 <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <glib.h>
#include "gdkx.h"
#include "gdkasync.h"
#include "gdkdisplay.h"
#include "gdkdisplay-x11.h"
#include "gdkscreen.h"
#include "gdkscreen-x11.h"
#include "gdkinternals.h"
#include "gdkinputprivate.h"
#include "xsettings-client.h"
#include "gdkalias.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
static void gdk_display_x11_dispose (GObject *object);
static void gdk_display_x11_finalize (GObject *object);
#ifdef HAVE_X11R6
static void gdk_internal_connection_watch (Display *display,
XPointer arg,
gint fd,
gboolean opening,
XPointer *watch_data);
#endif /* HAVE_X11R6 */
/* 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 (GdkDisplayX11, _gdk_display_x11, GDK_TYPE_DISPLAY)
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)
{
}
/**
* gdk_display_open:
* @display_name: the name of the display to open
* @returns: a #GdkDisplay, or %NULL if the display
* could not be opened.
*
* Opens a display.
*
* 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->use_xshm = TRUE;
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_x11_events_init_screen (display_x11->screens[i]);
/*set the default screen */
display_x11->default_screen = display_x11->screens[DefaultScreen (display_x11->xdisplay)];
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;
display_x11->have_render = GDK_UNKNOWN;
#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), &ignore, &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);
gdk_flush ();
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_windowing_image_init (display);
_gdk_events_init (display);
_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 (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: 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: 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
pointer_ungrab_callback (GdkDisplay *display,
gpointer data,
gulong serial)
{
_gdk_display_pointer_grab_update (display, serial);
}
#define XSERVER_TIME_IS_LATER(time1, time2) \
( (( time1 > time2 ) && ( time1 - time2 < ((guint32)-1)/2 )) || \
(( time1 < time2 ) && ( time2 - time1 > ((guint32)-1)/2 )) \
)
/**
* gdk_display_pointer_ungrab:
* @display: a #GdkDisplay.
* @time_: a timestap (e.g. %GDK_CURRENT_TIME).
*
* Release any pointer grab.
*
* Since: 2.2
*/
void
gdk_display_pointer_ungrab (GdkDisplay *display,
guint32 time_)
{
Display *xdisplay;
GdkDisplayX11 *display_x11;
GdkPointerGrabInfo *grab;
unsigned long serial;
g_return_if_fail (GDK_IS_DISPLAY (display));
display_x11 = GDK_DISPLAY_X11 (display);
xdisplay = GDK_DISPLAY_XDISPLAY (display);
serial = NextRequest (xdisplay);
_gdk_input_ungrab_pointer (display, time_);
XUngrabPointer (xdisplay, time_);
XFlush (xdisplay);
grab = _gdk_display_get_last_pointer_grab (display);
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,
pointer_ungrab_callback,
NULL);
}
}
/**
* gdk_display_keyboard_ungrab:
* @display: a #GdkDisplay.
* @time_: a timestap (e.g #GDK_CURRENT_TIME).
*
* Release any keyboard grab
*
* Since: 2.2
*/
void
gdk_display_keyboard_ungrab (GdkDisplay *display,
guint32 time)
{
Display *xdisplay;
GdkDisplayX11 *display_x11;
g_return_if_fail (GDK_IS_DISPLAY (display));
display_x11 = GDK_DISPLAY_X11 (display);
xdisplay = GDK_DISPLAY_XDISPLAY (display);
XUngrabKeyboard (xdisplay, time);
XFlush (xdisplay);
if (time == GDK_CURRENT_TIME ||
display->keyboard_grab.time == GDK_CURRENT_TIME ||
!XSERVER_TIME_IS_LATER (display->keyboard_grab.time, time))
_gdk_display_unset_has_keyboard_grab (display, FALSE);
}
/**
* 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));
XkbBell (GDK_DISPLAY_XDISPLAY (display), None, 0, None);
}
/**
* 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: 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]);
_gdk_events_uninit (GDK_DISPLAY_OBJECT (object));
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);
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: 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)
{
gdk_display = NULL;
return;
}
gdk_display = GDK_DISPLAY_XDISPLAY (display);
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')
{
gchar *time_str;
if (!g_utf8_validate (startup_id, -1, NULL))
g_warning ("DESKTOP_STARTUP_ID contains invalid UTF-8");
else
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;
}
/* Clear the environment variable so it won't be inherited by
* child processes and confuse things.
*/
g_unsetenv ("DESKTOP_STARTUP_ID");
/* 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));
}
}
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 ();
}
/**
* 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_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;
}
#define __GDK_DISPLAY_X11_C__
#include "gdkaliasdef.c"
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