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gtk2/gdk/x11/gdkevents-x11.c
Matthias Clasen 531c38a3e2 Don't crash on broken ClientMessage events. (#157056, Owen Taylor) 
2004-11-01  Matthias Clasen  <mclasen@redhat.com>

	* gdk/x11/gdkevents-x11.c (gdk_wm_protocols_filter): Don't crash on
	broken ClientMessage events.  (#157056, Owen Taylor)
2004-11-01 18:30:52 +00:00

2926 lines
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/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <config.h>
#include "gdkalias.h"
#include "gdk.h"
#include "gdkprivate-x11.h"
#include "gdkinternals.h"
#include "gdkx.h"
#include "gdkscreen-x11.h"
#include "gdkdisplay-x11.h"
#include "gdkasync.h"
#include "gdkkeysyms.h"
#include "xsettings-client.h"
#include <string.h>
#include "gdkinputprivate.h"
#ifdef HAVE_XKB
#include <X11/XKBlib.h>
#endif
#ifdef HAVE_XSYNC
#include <X11/extensions/sync.h>
#endif
#ifdef HAVE_XFIXES
#include <X11/extensions/Xfixes.h>
#endif
#include <X11/Xatom.h>
typedef struct _GdkIOClosure GdkIOClosure;
typedef struct _GdkDisplaySource GdkDisplaySource;
typedef struct _GdkEventTypeX11 GdkEventTypeX11;
struct _GdkIOClosure
{
GdkInputFunction function;
GdkInputCondition condition;
GdkDestroyNotify notify;
gpointer data;
};
struct _GdkDisplaySource
{
GSource source;
GdkDisplay *display;
GPollFD event_poll_fd;
};
struct _GdkEventTypeX11
{
gint base;
gint n_events;
};
/*
* Private function declarations
*/
static gint gdk_event_apply_filters (XEvent *xevent,
GdkEvent *event,
GList *filters);
static gboolean gdk_event_translate (GdkDisplay *display,
GdkEvent *event,
XEvent *xevent,
gboolean return_exposes);
static gboolean gdk_event_prepare (GSource *source,
gint *timeout);
static gboolean gdk_event_check (GSource *source);
static gboolean gdk_event_dispatch (GSource *source,
GSourceFunc callback,
gpointer user_data);
static GdkFilterReturn gdk_wm_protocols_filter (GdkXEvent *xev,
GdkEvent *event,
gpointer data);
static GSource *gdk_display_source_new (GdkDisplay *display);
static gboolean gdk_check_xpending (GdkDisplay *display);
static void gdk_xsettings_watch_cb (Window window,
Bool is_start,
long mask,
void *cb_data);
static void gdk_xsettings_notify_cb (const char *name,
XSettingsAction action,
XSettingsSetting *setting,
void *data);
/* Private variable declarations
*/
static GList *display_sources;
static GSourceFuncs event_funcs = {
gdk_event_prepare,
gdk_event_check,
gdk_event_dispatch,
NULL
};
static GSource *
gdk_display_source_new (GdkDisplay *display)
{
GSource *source = g_source_new (&event_funcs, sizeof (GdkDisplaySource));
GdkDisplaySource *display_source = (GdkDisplaySource *)source;
display_source->display = display;
return source;
}
static gboolean
gdk_check_xpending (GdkDisplay *display)
{
return XPending (GDK_DISPLAY_XDISPLAY (display));
}
/*********************************************
* Functions for maintaining the event queue *
*********************************************/
static void
refcounted_grab_server (Display *xdisplay)
{
GdkDisplay *display = gdk_x11_lookup_xdisplay (xdisplay);
gdk_x11_display_grab (display);
}
static void
refcounted_ungrab_server (Display *xdisplay)
{
GdkDisplay *display = gdk_x11_lookup_xdisplay (xdisplay);
gdk_x11_display_ungrab (display);
}
void
_gdk_x11_events_init_screen (GdkScreen *screen)
{
GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
/* Keep a flag to avoid extra notifies that we don't need
*/
screen_x11->xsettings_in_init = TRUE;
screen_x11->xsettings_client = xsettings_client_new (screen_x11->xdisplay,
screen_x11->screen_num,
gdk_xsettings_notify_cb,
gdk_xsettings_watch_cb,
screen);
xsettings_client_set_grab_func (screen_x11->xsettings_client,
refcounted_grab_server);
xsettings_client_set_ungrab_func (screen_x11->xsettings_client,
refcounted_ungrab_server);
screen_x11->xsettings_in_init = FALSE;
}
void
_gdk_x11_events_uninit_screen (GdkScreen *screen)
{
GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
xsettings_client_destroy (screen_x11->xsettings_client);
screen_x11->xsettings_client = NULL;
}
void
_gdk_events_init (GdkDisplay *display)
{
GSource *source;
GdkDisplaySource *display_source;
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
int connection_number = ConnectionNumber (display_x11->xdisplay);
GDK_NOTE (MISC, g_message ("connection number: %d", connection_number));
source = display_x11->event_source = gdk_display_source_new (display);
display_source = (GdkDisplaySource*) source;
g_source_set_priority (source, GDK_PRIORITY_EVENTS);
display_source->event_poll_fd.fd = connection_number;
display_source->event_poll_fd.events = G_IO_IN;
g_source_add_poll (source, &display_source->event_poll_fd);
g_source_set_can_recurse (source, TRUE);
g_source_attach (source, NULL);
display_sources = g_list_prepend (display_sources,display_source);
gdk_display_add_client_message_filter (display,
gdk_atom_intern ("WM_PROTOCOLS", FALSE),
gdk_wm_protocols_filter,
NULL);
}
/**
* gdk_events_pending:
*
* Checks if any events are ready to be processed for any display.
*
* Return value: %TRUE if any events are pending.
**/
gboolean
gdk_events_pending (void)
{
GList *tmp_list;
for (tmp_list = display_sources; tmp_list; tmp_list = tmp_list->next)
{
GdkDisplaySource *tmp_source = tmp_list->data;
GdkDisplay *display = tmp_source->display;
if (_gdk_event_queue_find_first (display))
return TRUE;
}
for (tmp_list = display_sources; tmp_list; tmp_list = tmp_list->next)
{
GdkDisplaySource *tmp_source = tmp_list->data;
GdkDisplay *display = tmp_source->display;
if (gdk_check_xpending (display))
return TRUE;
}
return FALSE;
}
static Bool
graphics_expose_predicate (Display *display,
XEvent *xevent,
XPointer arg)
{
if (xevent->xany.window == GDK_DRAWABLE_XID ((GdkDrawable *)arg) &&
(xevent->xany.type == GraphicsExpose ||
xevent->xany.type == NoExpose))
return True;
else
return False;
}
/**
* gdk_event_get_graphics_expose:
* @window: the #GdkWindow to wait for the events for.
*
* Waits for a GraphicsExpose or NoExpose event from the X server.
* This is used in the #GtkText and #GtkCList widgets in GTK+ to make sure any
* GraphicsExpose events are handled before the widget is scrolled.
*
* Return value: a #GdkEventExpose if a GraphicsExpose was received, or %NULL if a
* NoExpose event was received.
**/
GdkEvent*
gdk_event_get_graphics_expose (GdkWindow *window)
{
XEvent xevent;
GdkEvent *event;
g_return_val_if_fail (window != NULL, NULL);
XIfEvent (GDK_WINDOW_XDISPLAY (window), &xevent,
graphics_expose_predicate, (XPointer) window);
if (xevent.xany.type == GraphicsExpose)
{
event = gdk_event_new (GDK_NOTHING);
if (gdk_event_translate (GDK_WINDOW_DISPLAY (window), event,
&xevent, TRUE))
return event;
else
gdk_event_free (event);
}
return NULL;
}
static gint
gdk_event_apply_filters (XEvent *xevent,
GdkEvent *event,
GList *filters)
{
GList *tmp_list;
GdkFilterReturn result;
tmp_list = filters;
while (tmp_list)
{
GdkEventFilter *filter = (GdkEventFilter*) tmp_list->data;
tmp_list = tmp_list->next;
result = filter->function (xevent, event, filter->data);
if (result != GDK_FILTER_CONTINUE)
return result;
}
return GDK_FILTER_CONTINUE;
}
/**
* 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.
*
* 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);
}
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;
if (toplevel->have_sticky)
{
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, (guchar **)&desktop);
gdk_error_trap_pop ();
if (type != None)
{
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;
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, (guchar **)&atoms);
gdk_error_trap_pop ();
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");
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);
}
#define HAS_FOCUS(toplevel) \
((toplevel)->has_focus || (toplevel)->has_pointer_focus)
static void
generate_focus_event (GdkWindow *window,
gboolean in)
{
GdkEvent event;
event.type = GDK_FOCUS_CHANGE;
event.focus_change.window = window;
event.focus_change.send_event = FALSE;
event.focus_change.in = in;
gdk_event_put (&event);
}
static void
set_screen_from_root (GdkDisplay *display,
GdkEvent *event,
Window xrootwin)
{
GdkScreen *screen;
screen = _gdk_x11_display_screen_for_xrootwin (display, xrootwin);
g_assert (screen);
gdk_event_set_screen (event, screen);
}
static void
translate_key_event (GdkDisplay *display,
GdkEvent *event,
XEvent *xevent)
{
GdkKeymap *keymap = gdk_keymap_get_for_display (display);
gunichar c = 0;
guchar buf[7];
event->key.type = xevent->xany.type == KeyPress ? GDK_KEY_PRESS : GDK_KEY_RELEASE;
event->key.time = xevent->xkey.time;
event->key.state = (GdkModifierType) xevent->xkey.state;
event->key.group = _gdk_x11_get_group_for_state (display, xevent->xkey.state);
event->key.hardware_keycode = xevent->xkey.keycode;
event->key.keyval = GDK_VoidSymbol;
gdk_keymap_translate_keyboard_state (keymap,
event->key.hardware_keycode,
event->key.state,
event->key.group,
&event->key.keyval,
NULL, NULL, NULL);
/* Fill in event->string crudely, since various programs
* depend on it.
*/
event->key.string = NULL;
if (event->key.keyval != GDK_VoidSymbol)
c = gdk_keyval_to_unicode (event->key.keyval);
if (c)
{
gsize bytes_written;
gint len;
/* Apply the control key - Taken from Xlib
*/
if (event->key.state & GDK_CONTROL_MASK)
{
if ((c >= '@' && c < '\177') || c == ' ') c &= 0x1F;
else if (c == '2')
{
event->key.string = g_memdup ("\0\0", 2);
event->key.length = 1;
buf[0] = '\0';
goto out;
}
else if (c >= '3' && c <= '7') c -= ('3' - '\033');
else if (c == '8') c = '\177';
else if (c == '/') c = '_' & 0x1F;
}
len = g_unichar_to_utf8 (c, buf);
buf[len] = '\0';
event->key.string = g_locale_from_utf8 (buf, len,
NULL, &bytes_written,
NULL);
if (event->key.string)
event->key.length = bytes_written;
}
else if (event->key.keyval == GDK_Escape)
{
event->key.length = 1;
event->key.string = g_strdup ("\033");
}
else if (event->key.keyval == GDK_Return ||
event->key.keyval == GDK_KP_Enter)
{
event->key.length = 1;
event->key.string = g_strdup ("\r");
}
if (!event->key.string)
{
event->key.length = 0;
event->key.string = g_strdup ("");
}
out:
#ifdef G_ENABLE_DEBUG
if (_gdk_debug_flags & GDK_DEBUG_EVENTS)
{
g_message ("%s:\t\twindow: %ld key: %12s %d",
event->type == GDK_KEY_PRESS ? "key press " : "key release",
xevent->xkey.window,
event->key.keyval ? gdk_keyval_name (event->key.keyval) : "(none)",
event->key.keyval);
if (event->key.length > 0)
g_message ("\t\tlength: %4d string: \"%s\"",
event->key.length, buf);
}
#endif /* G_ENABLE_DEBUG */
return;
}
/**
* 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);
}
/* Return the window this has to do with, if any, rather
* than the frame or root window that was selecting
* for substructure
*/
static void
get_real_window (GdkDisplay *display,
XEvent *event,
Window *event_window,
Window *filter_window)
{
/* Core events all have an event->xany.window field, but that's
* not true for extension events
*/
if (event->type >= KeyPress &&
event->type <= MappingNotify)
{
*filter_window = event->xany.window;
switch (event->type)
{
case CreateNotify:
*event_window = event->xcreatewindow.window;
break;
case DestroyNotify:
*event_window = event->xdestroywindow.window;
break;
case UnmapNotify:
*event_window = event->xunmap.window;
break;
case MapNotify:
*event_window = event->xmap.window;
break;
case MapRequest:
*event_window = event->xmaprequest.window;
break;
case ReparentNotify:
*event_window = event->xreparent.window;
break;
case ConfigureNotify:
*event_window = event->xconfigure.window;
break;
case ConfigureRequest:
*event_window = event->xconfigurerequest.window;
break;
case GravityNotify:
*event_window = event->xgravity.window;
break;
case CirculateNotify:
*event_window = event->xcirculate.window;
break;
case CirculateRequest:
*event_window = event->xcirculaterequest.window;
break;
default:
*event_window = event->xany.window;
}
}
else
{
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
GSList *tmp_list;
for (tmp_list = display_x11->event_types;
tmp_list;
tmp_list = tmp_list->next)
{
GdkEventTypeX11 *event_type = tmp_list->data;
if (event->type >= event_type->base &&
event->type < event_type->base + event_type->n_events)
{
*event_window = event->xany.window;
*filter_window = event->xany.window;
return;
}
}
*event_window = None;
*filter_window = None;
}
}
#ifdef G_ENABLE_DEBUG
static const char notify_modes[][19] = {
"NotifyNormal",
"NotifyGrab",
"NotifyUngrab",
"NotifyWhileGrabbed"
};
static const char notify_details[][23] = {
"NotifyAncestor",
"NotifyVirtual",
"NotifyInferior",
"NotifyNonlinear",
"NotifyNonlinearVirtual",
"NotifyPointer",
"NotifyPointerRoot",
"NotifyDetailNone"
};
#endif
static void
set_user_time (GdkWindow *window,
GdkEvent *event)
{
g_return_if_fail (event != NULL);
window = gdk_window_get_toplevel (event->client.window);
g_return_if_fail (GDK_IS_WINDOW (window));
/* If an event doesn't have a valid timestamp, we shouldn't use it
* to update the latest user interaction time.
*/
if (gdk_event_get_time (event) != GDK_CURRENT_TIME)
gdk_x11_window_set_user_time (gdk_window_get_toplevel (window),
gdk_event_get_time (event));
}
static gboolean
gdk_event_translate (GdkDisplay *display,
GdkEvent *event,
XEvent *xevent,
gboolean return_exposes)
{
GdkWindow *window;
GdkWindowObject *window_private;
GdkWindow *filter_window;
GdkWindowImplX11 *window_impl = NULL;
gboolean return_val;
gint xoffset, yoffset;
GdkScreen *screen = NULL;
GdkScreenX11 *screen_x11 = NULL;
GdkToplevelX11 *toplevel = NULL;
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
Window xwindow, filter_xwindow;
return_val = FALSE;
/* init these, since the done: block uses them */
window = NULL;
window_private = NULL;
event->any.window = NULL;
if (_gdk_default_filters)
{
/* Apply global filters */
GdkFilterReturn result;
result = gdk_event_apply_filters (xevent, event,
_gdk_default_filters);
if (result != GDK_FILTER_CONTINUE)
{
return_val = (result == GDK_FILTER_TRANSLATE) ? TRUE : FALSE;
goto done;
}
}
/* Find the GdkWindow that this event relates to.
* Basically this means substructure events
* are reported same as structure events
*/
get_real_window (display, xevent, &xwindow, &filter_xwindow);
window = gdk_window_lookup_for_display (display, xwindow);
/* We may receive events such as NoExpose/GraphicsExpose
* and ShmCompletion for pixmaps
*/
if (window && !GDK_IS_WINDOW (window))
window = NULL;
window_private = (GdkWindowObject *) window;
/* We always run the filters for the window where the event
* is delivered, not the window that it relates to
*/
if (filter_xwindow == xwindow)
filter_window = window;
else
{
filter_window = gdk_window_lookup_for_display (display, filter_xwindow);
if (filter_window && !GDK_IS_WINDOW (filter_window))
filter_window = NULL;
}
if (window)
{
screen = GDK_WINDOW_SCREEN (window);
screen_x11 = GDK_SCREEN_X11 (screen);
toplevel = _gdk_x11_window_get_toplevel (window);
}
if (window != NULL)
{
window_impl = GDK_WINDOW_IMPL_X11 (window_private->impl);
/* Move key events on focus window to the real toplevel, and
* filter out all other events on focus window
*/
if (toplevel && xwindow == toplevel->focus_window)
{
switch (xevent->type)
{
case KeyPress:
case KeyRelease:
xwindow = GDK_WINDOW_XID (window);
xevent->xany.window = xwindow;
break;
default:
return FALSE;
}
}
g_object_ref (window);
}
event->any.window = window;
event->any.send_event = xevent->xany.send_event ? TRUE : FALSE;
if (window_private && GDK_WINDOW_DESTROYED (window))
{
if (xevent->type != DestroyNotify)
{
return_val = FALSE;
goto done;
}
}
else if (filter_window)
{
/* Apply per-window filters */
GdkWindowObject *filter_private = (GdkWindowObject *) filter_window;
GdkFilterReturn result;
if (filter_private->filters)
{
g_object_ref (filter_window);
result = gdk_event_apply_filters (xevent, event,
filter_private->filters);
g_object_unref (filter_window);
if (result != GDK_FILTER_CONTINUE)
{
return_val = (result == GDK_FILTER_TRANSLATE) ? TRUE : FALSE;
goto done;
}
}
}
if (screen_x11 && screen_x11->wmspec_check_window != None &&
xwindow == screen_x11->wmspec_check_window)
{
if (xevent->type == DestroyNotify)
{
screen_x11->wmspec_check_window = None;
g_free (screen_x11->window_manager_name);
screen_x11->window_manager_name = g_strdup ("unknown");
/* careful, reentrancy */
_gdk_x11_screen_window_manager_changed (GDK_SCREEN (screen_x11));
}
/* Eat events on this window unless someone had wrapped
* it as a foreign window
*/
if (window == NULL)
{
return_val = FALSE;
goto done;
}
}
if (window &&
(xevent->xany.type == MotionNotify ||
xevent->xany.type == ButtonRelease))
{
if (_gdk_moveresize_handle_event (xevent))
{
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;
if (window)
{
_gdk_windowing_window_get_offsets (window, &xoffset, &yoffset);
}
else
{
xoffset = 0;
yoffset = 0;
}
switch (xevent->type)
{
case KeyPress:
if (window_private == NULL)
{
return_val = FALSE;
break;
}
translate_key_event (display, event, xevent);
set_user_time (window, event);
break;
case KeyRelease:
if (window_private == NULL)
{
return_val = FALSE;
break;
}
/* Emulate detectable auto-repeat by checking to see
* if the next event is a key press with the same
* keycode and timestamp, and if so, ignoring the event.
*/
if (!display_x11->have_xkb_autorepeat && XPending (xevent->xkey.display))
{
XEvent next_event;
XPeekEvent (xevent->xkey.display, &next_event);
if (next_event.type == KeyPress &&
next_event.xkey.keycode == xevent->xkey.keycode &&
next_event.xkey.time == xevent->xkey.time)
{
return_val = FALSE;
break;
}
}
translate_key_event (display, event, xevent);
break;
case ButtonPress:
GDK_NOTE (EVENTS,
g_message ("button press:\t\twindow: %ld x,y: %d %d button: %d",
xevent->xbutton.window,
xevent->xbutton.x, xevent->xbutton.y,
xevent->xbutton.button));
if (window_private == NULL ||
((window_private->extension_events != 0) &&
display_x11->input_ignore_core))
{
return_val = FALSE;
break;
}
/* If we get a ButtonPress event where the button is 4 or 5,
it's a Scroll event */
switch (xevent->xbutton.button)
{
case 4: /* up */
case 5: /* down */
case 6: /* left */
case 7: /* right */
event->scroll.type = GDK_SCROLL;
if (xevent->xbutton.button == 4)
event->scroll.direction = GDK_SCROLL_UP;
else if (xevent->xbutton.button == 5)
event->scroll.direction = GDK_SCROLL_DOWN;
else if (xevent->xbutton.button == 6)
event->scroll.direction = GDK_SCROLL_LEFT;
else
event->scroll.direction = GDK_SCROLL_RIGHT;
event->scroll.window = window;
event->scroll.time = xevent->xbutton.time;
event->scroll.x = xevent->xbutton.x + xoffset;
event->scroll.y = xevent->xbutton.y + yoffset;
event->scroll.x_root = (gfloat)xevent->xbutton.x_root;
event->scroll.y_root = (gfloat)xevent->xbutton.y_root;
event->scroll.state = (GdkModifierType) xevent->xbutton.state;
event->scroll.device = display->core_pointer;
set_screen_from_root (display, event, xevent->xbutton.root);
break;
default:
event->button.type = GDK_BUTTON_PRESS;
event->button.window = window;
event->button.time = xevent->xbutton.time;
event->button.x = xevent->xbutton.x + xoffset;
event->button.y = xevent->xbutton.y + yoffset;
event->button.x_root = (gfloat)xevent->xbutton.x_root;
event->button.y_root = (gfloat)xevent->xbutton.y_root;
event->button.axes = NULL;
event->button.state = (GdkModifierType) xevent->xbutton.state;
event->button.button = xevent->xbutton.button;
event->button.device = display->core_pointer;
set_screen_from_root (display, event, xevent->xbutton.root);
_gdk_event_button_generate (display, event);
break;
}
set_user_time (window, event);
break;
case ButtonRelease:
GDK_NOTE (EVENTS,
g_message ("button release:\twindow: %ld x,y: %d %d button: %d",
xevent->xbutton.window,
xevent->xbutton.x, xevent->xbutton.y,
xevent->xbutton.button));
if (window_private == NULL ||
((window_private->extension_events != 0) &&
display_x11->input_ignore_core))
{
return_val = FALSE;
break;
}
/* We treat button presses as scroll wheel events, so ignore the release */
if (xevent->xbutton.button == 4 || xevent->xbutton.button == 5 ||
xevent->xbutton.button == 6 || xevent->xbutton.button ==7)
{
return_val = FALSE;
break;
}
event->button.type = GDK_BUTTON_RELEASE;
event->button.window = window;
event->button.time = xevent->xbutton.time;
event->button.x = xevent->xbutton.x + xoffset;
event->button.y = xevent->xbutton.y + yoffset;
event->button.x_root = (gfloat)xevent->xbutton.x_root;
event->button.y_root = (gfloat)xevent->xbutton.y_root;
event->button.axes = NULL;
event->button.state = (GdkModifierType) xevent->xbutton.state;
event->button.button = xevent->xbutton.button;
event->button.device = display->core_pointer;
set_screen_from_root (display, event, xevent->xbutton.root);
break;
case MotionNotify:
GDK_NOTE (EVENTS,
g_message ("motion notify:\t\twindow: %ld x,y: %d %d hint: %s",
xevent->xmotion.window,
xevent->xmotion.x, xevent->xmotion.y,
(xevent->xmotion.is_hint) ? "true" : "false"));
if (window_private == NULL ||
((window_private->extension_events != 0) &&
display_x11->input_ignore_core))
{
return_val = FALSE;
break;
}
event->motion.type = GDK_MOTION_NOTIFY;
event->motion.window = window;
event->motion.time = xevent->xmotion.time;
event->motion.x = xevent->xmotion.x + xoffset;
event->motion.y = xevent->xmotion.y + yoffset;
event->motion.x_root = (gfloat)xevent->xmotion.x_root;
event->motion.y_root = (gfloat)xevent->xmotion.y_root;
event->motion.axes = NULL;
event->motion.state = (GdkModifierType) xevent->xmotion.state;
event->motion.is_hint = xevent->xmotion.is_hint;
event->motion.device = display->core_pointer;
set_screen_from_root (display, event, xevent->xmotion.root);
break;
case EnterNotify:
GDK_NOTE (EVENTS,
g_message ("enter notify:\t\twindow: %ld detail: %d subwin: %ld",
xevent->xcrossing.window,
xevent->xcrossing.detail,
xevent->xcrossing.subwindow));
if (window_private == NULL)
{
return_val = FALSE;
break;
}
/* Handle focusing (in the case where no window manager is running */
if (toplevel &&
xevent->xcrossing.detail != NotifyInferior &&
xevent->xcrossing.focus && !toplevel->has_focus_window)
{
gboolean had_focus = HAS_FOCUS (toplevel);
toplevel->has_pointer_focus = TRUE;
if (HAS_FOCUS (toplevel) != had_focus)
generate_focus_event (window, TRUE);
}
/* Tell XInput stuff about it if appropriate */
if (window_private &&
!GDK_WINDOW_DESTROYED (window) &&
window_private->extension_events != 0)
_gdk_input_enter_event (&xevent->xcrossing, window);
event->crossing.type = GDK_ENTER_NOTIFY;
event->crossing.window = window;
/* If the subwindow field of the XEvent is non-NULL, then
* lookup the corresponding GdkWindow.
*/
if (xevent->xcrossing.subwindow != None)
event->crossing.subwindow = gdk_window_lookup_for_display (display, xevent->xcrossing.subwindow);
else
event->crossing.subwindow = NULL;
event->crossing.time = xevent->xcrossing.time;
event->crossing.x = xevent->xcrossing.x + xoffset;
event->crossing.y = xevent->xcrossing.y + yoffset;
event->crossing.x_root = xevent->xcrossing.x_root;
event->crossing.y_root = xevent->xcrossing.y_root;
set_screen_from_root (display, event, xevent->xcrossing.root);
/* Translate the crossing mode into Gdk terms.
*/
switch (xevent->xcrossing.mode)
{
case NotifyNormal:
event->crossing.mode = GDK_CROSSING_NORMAL;
break;
case NotifyGrab:
event->crossing.mode = GDK_CROSSING_GRAB;
break;
case NotifyUngrab:
event->crossing.mode = GDK_CROSSING_UNGRAB;
break;
};
/* Translate the crossing detail into Gdk terms.
*/
switch (xevent->xcrossing.detail)
{
case NotifyInferior:
event->crossing.detail = GDK_NOTIFY_INFERIOR;
break;
case NotifyAncestor:
event->crossing.detail = GDK_NOTIFY_ANCESTOR;
break;
case NotifyVirtual:
event->crossing.detail = GDK_NOTIFY_VIRTUAL;
break;
case NotifyNonlinear:
event->crossing.detail = GDK_NOTIFY_NONLINEAR;
break;
case NotifyNonlinearVirtual:
event->crossing.detail = GDK_NOTIFY_NONLINEAR_VIRTUAL;
break;
default:
event->crossing.detail = GDK_NOTIFY_UNKNOWN;
break;
}
event->crossing.focus = xevent->xcrossing.focus;
event->crossing.state = xevent->xcrossing.state;
break;
case LeaveNotify:
GDK_NOTE (EVENTS,
g_message ("leave notify:\t\twindow: %ld detail: %d subwin: %ld",
xevent->xcrossing.window,
xevent->xcrossing.detail, xevent->xcrossing.subwindow));
if (window_private == NULL)
{
return_val = FALSE;
break;
}
/* Handle focusing (in the case where no window manager is running */
if (toplevel &&
xevent->xcrossing.detail != NotifyInferior &&
xevent->xcrossing.focus && !toplevel->has_focus_window)
{
gboolean had_focus = HAS_FOCUS (toplevel);
toplevel->has_pointer_focus = FALSE;
if (HAS_FOCUS (toplevel) != had_focus)
generate_focus_event (window, FALSE);
}
event->crossing.type = GDK_LEAVE_NOTIFY;
event->crossing.window = window;
/* If the subwindow field of the XEvent is non-NULL, then
* lookup the corresponding GdkWindow.
*/
if (xevent->xcrossing.subwindow != None)
event->crossing.subwindow = gdk_window_lookup_for_display (display, xevent->xcrossing.subwindow);
else
event->crossing.subwindow = NULL;
event->crossing.time = xevent->xcrossing.time;
event->crossing.x = xevent->xcrossing.x + xoffset;
event->crossing.y = xevent->xcrossing.y + yoffset;
event->crossing.x_root = xevent->xcrossing.x_root;
event->crossing.y_root = xevent->xcrossing.y_root;
set_screen_from_root (display, event, xevent->xcrossing.root);
/* Translate the crossing mode into Gdk terms.
*/
switch (xevent->xcrossing.mode)
{
case NotifyNormal:
event->crossing.mode = GDK_CROSSING_NORMAL;
break;
case NotifyGrab:
event->crossing.mode = GDK_CROSSING_GRAB;
break;
case NotifyUngrab:
event->crossing.mode = GDK_CROSSING_UNGRAB;
break;
};
/* Translate the crossing detail into Gdk terms.
*/
switch (xevent->xcrossing.detail)
{
case NotifyInferior:
event->crossing.detail = GDK_NOTIFY_INFERIOR;
break;
case NotifyAncestor:
event->crossing.detail = GDK_NOTIFY_ANCESTOR;
break;
case NotifyVirtual:
event->crossing.detail = GDK_NOTIFY_VIRTUAL;
break;
case NotifyNonlinear:
event->crossing.detail = GDK_NOTIFY_NONLINEAR;
break;
case NotifyNonlinearVirtual:
event->crossing.detail = GDK_NOTIFY_NONLINEAR_VIRTUAL;
break;
default:
event->crossing.detail = GDK_NOTIFY_UNKNOWN;
break;
}
event->crossing.focus = xevent->xcrossing.focus;
event->crossing.state = xevent->xcrossing.state;
break;
/* We only care about focus events that indicate that _this_
* window (not a ancestor or child) got or lost the focus
*/
case FocusIn:
GDK_NOTE (EVENTS,
g_message ("focus in:\t\twindow: %ld, detail: %s, mode: %s",
xevent->xfocus.window,
notify_details[xevent->xfocus.detail],
notify_modes[xevent->xfocus.mode]));
if (toplevel)
{
gboolean had_focus = HAS_FOCUS (toplevel);
switch (xevent->xfocus.detail)
{
case NotifyAncestor:
case NotifyNonlinear:
case NotifyVirtual:
case NotifyNonlinearVirtual:
toplevel->has_focus_window = TRUE;
/* We pretend that the focus moves to the grab
* window, so we pay attention to NotifyGrab
* NotifyUngrab, and ignore NotifyWhileGrabbed
*/
if (xevent->xfocus.mode != NotifyWhileGrabbed)
toplevel->has_focus = TRUE;
break;
case NotifyPointer:
/* The X server sends NotifyPointer/NotifyGrab,
* but the pointer focus is ignored while a
* grab is in effect
*/
if (xevent->xfocus.mode != NotifyGrab)
toplevel->has_pointer_focus = TRUE;
break;
case NotifyInferior:
case NotifyPointerRoot:
case NotifyDetailNone:
break;
}
if (HAS_FOCUS (toplevel) != had_focus)
generate_focus_event (window, TRUE);
}
break;
case FocusOut:
GDK_NOTE (EVENTS,
g_message ("focus out:\t\twindow: %ld, detail: %s, mode: %s",
xevent->xfocus.window,
notify_details[xevent->xfocus.detail],
notify_modes[xevent->xfocus.mode]));
if (toplevel)
{
gboolean had_focus = HAS_FOCUS (toplevel);
switch (xevent->xfocus.detail)
{
case NotifyAncestor:
case NotifyNonlinear:
case NotifyVirtual:
case NotifyNonlinearVirtual:
toplevel->has_focus_window = FALSE;
if (xevent->xfocus.mode != NotifyWhileGrabbed)
toplevel->has_focus = FALSE;
break;
case NotifyPointer:
if (xevent->xfocus.mode != NotifyUngrab)
toplevel->has_pointer_focus = FALSE;
break;
case NotifyInferior:
case NotifyPointerRoot:
case NotifyDetailNone:
break;
}
if (HAS_FOCUS (toplevel) != had_focus)
generate_focus_event (window, FALSE);
}
break;
#if 0
/* gdk_keyboard_grab() causes following events. These events confuse
* the XIM focus, so ignore them.
*/
if (xevent->xfocus.mode == NotifyGrab ||
xevent->xfocus.mode == NotifyUngrab)
break;
#endif
case KeymapNotify:
GDK_NOTE (EVENTS,
g_message ("keymap notify"));
/* Not currently handled */
return_val = FALSE;
break;
case Expose:
GDK_NOTE (EVENTS,
g_message ("expose:\t\twindow: %ld %d x,y: %d %d w,h: %d %d%s",
xevent->xexpose.window, xevent->xexpose.count,
xevent->xexpose.x, xevent->xexpose.y,
xevent->xexpose.width, xevent->xexpose.height,
event->any.send_event ? " (send)" : ""));
if (window_private == NULL)
{
return_val = FALSE;
break;
}
{
GdkRectangle expose_rect;
expose_rect.x = xevent->xexpose.x + xoffset;
expose_rect.y = xevent->xexpose.y + yoffset;
expose_rect.width = xevent->xexpose.width;
expose_rect.height = xevent->xexpose.height;
if (return_exposes)
{
event->expose.type = GDK_EXPOSE;
event->expose.area = expose_rect;
event->expose.region = gdk_region_rectangle (&expose_rect);
event->expose.window = window;
event->expose.count = xevent->xexpose.count;
return_val = TRUE;
}
else
{
_gdk_window_process_expose (window, xevent->xexpose.serial, &expose_rect);
return_val = FALSE;
}
return_val = FALSE;
}
break;
case GraphicsExpose:
{
GdkRectangle expose_rect;
GDK_NOTE (EVENTS,
g_message ("graphics expose:\tdrawable: %ld",
xevent->xgraphicsexpose.drawable));
if (window_private == NULL)
{
return_val = FALSE;
break;
}
expose_rect.x = xevent->xgraphicsexpose.x + xoffset;
expose_rect.y = xevent->xgraphicsexpose.y + yoffset;
expose_rect.width = xevent->xgraphicsexpose.width;
expose_rect.height = xevent->xgraphicsexpose.height;
if (return_exposes)
{
event->expose.type = GDK_EXPOSE;
event->expose.area = expose_rect;
event->expose.region = gdk_region_rectangle (&expose_rect);
event->expose.window = window;
event->expose.count = xevent->xgraphicsexpose.count;
return_val = TRUE;
}
else
{
_gdk_window_process_expose (window, xevent->xgraphicsexpose.serial, &expose_rect);
return_val = FALSE;
}
}
break;
case NoExpose:
GDK_NOTE (EVENTS,
g_message ("no expose:\t\tdrawable: %ld",
xevent->xnoexpose.drawable));
event->no_expose.type = GDK_NO_EXPOSE;
event->no_expose.window = window;
break;
case VisibilityNotify:
#ifdef G_ENABLE_DEBUG
if (_gdk_debug_flags & GDK_DEBUG_EVENTS)
switch (xevent->xvisibility.state)
{
case VisibilityFullyObscured:
g_message ("visibility notify:\twindow: %ld none",
xevent->xvisibility.window);
break;
case VisibilityPartiallyObscured:
g_message ("visibility notify:\twindow: %ld partial",
xevent->xvisibility.window);
break;
case VisibilityUnobscured:
g_message ("visibility notify:\twindow: %ld full",
xevent->xvisibility.window);
break;
}
#endif /* G_ENABLE_DEBUG */
if (window_private == NULL)
{
return_val = FALSE;
break;
}
event->visibility.type = GDK_VISIBILITY_NOTIFY;
event->visibility.window = window;
switch (xevent->xvisibility.state)
{
case VisibilityFullyObscured:
event->visibility.state = GDK_VISIBILITY_FULLY_OBSCURED;
break;
case VisibilityPartiallyObscured:
event->visibility.state = GDK_VISIBILITY_PARTIAL;
break;
case VisibilityUnobscured:
event->visibility.state = GDK_VISIBILITY_UNOBSCURED;
break;
}
break;
case CreateNotify:
GDK_NOTE (EVENTS,
g_message ("create notify:\twindow: %ld x,y: %d %d w,h: %d %d b-w: %d parent: %ld ovr: %d",
xevent->xcreatewindow.window,
xevent->xcreatewindow.x,
xevent->xcreatewindow.y,
xevent->xcreatewindow.width,
xevent->xcreatewindow.height,
xevent->xcreatewindow.border_width,
xevent->xcreatewindow.parent,
xevent->xcreatewindow.override_redirect));
/* not really handled */
break;
case DestroyNotify:
GDK_NOTE (EVENTS,
g_message ("destroy notify:\twindow: %ld",
xevent->xdestroywindow.window));
/* Ignore DestroyNotify from SubstructureNotifyMask */
if (xevent->xdestroywindow.window == xevent->xdestroywindow.event)
{
event->any.type = GDK_DESTROY;
event->any.window = window;
return_val = window_private && !GDK_WINDOW_DESTROYED (window);
if (window && GDK_WINDOW_XID (window) != screen_x11->xroot_window)
gdk_window_destroy_notify (window);
}
else
return_val = FALSE;
break;
case UnmapNotify:
GDK_NOTE (EVENTS,
g_message ("unmap notify:\t\twindow: %ld",
xevent->xmap.window));
event->any.type = GDK_UNMAP;
event->any.window = window;
/* If we are shown (not withdrawn) and get an unmap, it means we
* were iconified in the X sense. If we are withdrawn, and get
* an unmap, it means we hid the window ourselves, so we
* will have already flipped the iconified bit off.
*/
if (window)
{
if (GDK_WINDOW_IS_MAPPED (window))
gdk_synthesize_window_state (window,
0,
GDK_WINDOW_STATE_ICONIFIED);
_gdk_xgrab_check_unmap (window, xevent->xany.serial);
}
break;
case MapNotify:
GDK_NOTE (EVENTS,
g_message ("map notify:\t\twindow: %ld",
xevent->xmap.window));
event->any.type = GDK_MAP;
event->any.window = window;
/* Unset iconified if it was set */
if (window && (((GdkWindowObject*)window)->state & GDK_WINDOW_STATE_ICONIFIED))
gdk_synthesize_window_state (window,
GDK_WINDOW_STATE_ICONIFIED,
0);
break;
case ReparentNotify:
GDK_NOTE (EVENTS,
g_message ("reparent notify:\twindow: %ld x,y: %d %d parent: %ld ovr: %d",
xevent->xreparent.window,
xevent->xreparent.x,
xevent->xreparent.y,
xevent->xreparent.parent,
xevent->xreparent.override_redirect));
/* Not currently handled */
return_val = FALSE;
break;
case ConfigureNotify:
GDK_NOTE (EVENTS,
g_message ("configure notify:\twindow: %ld x,y: %d %d w,h: %d %d b-w: %d above: %ld ovr: %d%s",
xevent->xconfigure.window,
xevent->xconfigure.x,
xevent->xconfigure.y,
xevent->xconfigure.width,
xevent->xconfigure.height,
xevent->xconfigure.border_width,
xevent->xconfigure.above,
xevent->xconfigure.override_redirect,
!window
? " (discarding)"
: GDK_WINDOW_TYPE (window) == GDK_WINDOW_CHILD
? " (discarding child)"
: xevent->xconfigure.event != xevent->xconfigure.window
? " (discarding substructure)"
: ""));
if (window && GDK_WINDOW_TYPE (window) == GDK_WINDOW_ROOT)
_gdk_x11_screen_size_changed (screen, xevent);
if (window &&
xevent->xconfigure.event == xevent->xconfigure.window &&
!GDK_WINDOW_DESTROYED (window) &&
(window_private->extension_events != 0))
_gdk_input_configure_event (&xevent->xconfigure, window);
#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_DRAWABLE_XDISPLAY (window),
GDK_DRAWABLE_XID (window),
screen_x11->xroot_window,
0, 0,
&tx, &ty,
&child_window))
{
event->configure.x = tx;
event->configure.y = ty;
}
gdk_error_trap_pop ();
}
else
{
event->configure.x = xevent->xconfigure.x;
event->configure.y = xevent->xconfigure.y;
}
window_private->x = event->configure.x;
window_private->y = event->configure.y;
window_impl->width = xevent->xconfigure.width;
window_impl->height = xevent->xconfigure.height;
if (window_private->resize_count >= 1)
{
window_private->resize_count -= 1;
if (window_private->resize_count == 0)
_gdk_moveresize_configure_done (display, window);
}
}
break;
case PropertyNotify:
GDK_NOTE (EVENTS,
g_message ("property notify:\twindow: %ld, atom(%ld): %s%s%s",
xevent->xproperty.window,
xevent->xproperty.atom,
"\"",
gdk_x11_get_xatom_name_for_display (display, xevent->xproperty.atom),
"\""));
if (window_private == NULL)
{
return_val = FALSE;
break;
}
/* We compare with the serial of the last time we mapped the
* window to avoid refetching properties that we set ourselves
*/
if (toplevel &&
xevent->xproperty.serial >= toplevel->map_serial)
{
if (xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_STATE"))
gdk_check_wm_state_changed (window);
if (xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_DESKTOP"))
gdk_check_wm_desktop_changed (window);
}
if (window_private->event_mask & GDK_PROPERTY_CHANGE_MASK)
{
event->property.type = GDK_PROPERTY_NOTIFY;
event->property.window = window;
event->property.atom = gdk_x11_xatom_to_atom_for_display (display, xevent->xproperty.atom);
event->property.time = xevent->xproperty.time;
event->property.state = xevent->xproperty.state;
}
else
return_val = FALSE;
break;
case SelectionClear:
GDK_NOTE (EVENTS,
g_message ("selection clear:\twindow: %ld",
xevent->xproperty.window));
if (_gdk_selection_filter_clear_event (&xevent->xselectionclear))
{
event->selection.type = GDK_SELECTION_CLEAR;
event->selection.window = window;
event->selection.selection = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionclear.selection);
event->selection.time = xevent->xselectionclear.time;
}
else
return_val = FALSE;
break;
case SelectionRequest:
GDK_NOTE (EVENTS,
g_message ("selection request:\twindow: %ld",
xevent->xproperty.window));
event->selection.type = GDK_SELECTION_REQUEST;
event->selection.window = window;
event->selection.selection = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionrequest.selection);
event->selection.target = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionrequest.target);
event->selection.property = gdk_x11_xatom_to_atom_for_display (display, xevent->xselectionrequest.property);
event->selection.requestor = xevent->xselectionrequest.requestor;
event->selection.time = xevent->xselectionrequest.time;
break;
case SelectionNotify:
GDK_NOTE (EVENTS,
g_message ("selection notify:\twindow: %ld",
xevent->xproperty.window));
event->selection.type = GDK_SELECTION_NOTIFY;
event->selection.window = window;
event->selection.selection = gdk_x11_xatom_to_atom_for_display (display, xevent->xselection.selection);
event->selection.target = gdk_x11_xatom_to_atom_for_display (display, xevent->xselection.target);
event->selection.property = gdk_x11_xatom_to_atom_for_display (display, xevent->xselection.property);
event->selection.time = xevent->xselection.time;
break;
case ColormapNotify:
GDK_NOTE (EVENTS,
g_message ("colormap notify:\twindow: %ld",
xevent->xcolormap.window));
/* Not currently handled */
return_val = FALSE;
break;
case ClientMessage:
{
GList *tmp_list;
GdkFilterReturn result = GDK_FILTER_CONTINUE;
GdkAtom message_type = gdk_x11_xatom_to_atom_for_display (display, xevent->xclient.message_type);
GDK_NOTE (EVENTS,
g_message ("client message:\twindow: %ld",
xevent->xclient.window));
tmp_list = display_x11->client_filters;
while (tmp_list)
{
GdkClientFilter *filter = tmp_list->data;
tmp_list = tmp_list->next;
if (filter->type == message_type)
{
result = (*filter->function) (xevent, event, filter->data);
if (result != GDK_FILTER_CONTINUE)
break;
}
}
switch (result)
{
case GDK_FILTER_REMOVE:
return_val = FALSE;
break;
case GDK_FILTER_TRANSLATE:
return_val = TRUE;
break;
case GDK_FILTER_CONTINUE:
/* Send unknown ClientMessage's on to Gtk for it to use */
if (window_private == NULL)
{
return_val = FALSE;
}
else
{
event->client.type = GDK_CLIENT_EVENT;
event->client.window = window;
event->client.message_type = message_type;
event->client.data_format = xevent->xclient.format;
memcpy(&event->client.data, &xevent->xclient.data,
sizeof(event->client.data));
}
break;
}
}
break;
case MappingNotify:
GDK_NOTE (EVENTS,
g_message ("mapping notify"));
/* Let XLib know that there is a new keyboard mapping.
*/
XRefreshKeyboardMapping (&xevent->xmapping);
_gdk_keymap_keys_changed (display);
return_val = FALSE;
break;
default:
#ifdef HAVE_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);
break;
}
}
else
#endif
#ifdef HAVE_XFIXES
if (xevent->type - display_x11->xfixes_event_base == XFixesSelectionNotify)
{
XFixesSelectionNotifyEvent *selection_notify = (XFixesSelectionNotifyEvent *)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
{
/* something else - (e.g., a Xinput event) */
if (window_private &&
!GDK_WINDOW_DESTROYED (window_private) &&
(window_private->extension_events != 0))
return_val = _gdk_input_other_event(event, xevent, window);
else
return_val = FALSE;
break;
}
}
done:
if (return_val)
{
if (event->any.window)
g_object_ref (event->any.window);
if (((event->any.type == GDK_ENTER_NOTIFY) ||
(event->any.type == GDK_LEAVE_NOTIFY)) &&
(event->crossing.subwindow != NULL))
g_object_ref (event->crossing.subwindow);
}
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;
return GDK_FILTER_TRANSLATE;
}
else if (atom == gdk_x11_get_xatom_by_name_for_display (display, "WM_TAKE_FOCUS"))
{
GdkToplevelX11 *toplevel = _gdk_x11_window_get_toplevel (event->any.window);
GdkWindowObject *private = (GdkWindowObject *)win;
/* There is no way of knowing reliably whether we are viewable;
* _gdk_x11_set_input_focus_safe() traps errors asynchronously.
*/
if (toplevel && private->accept_focus)
_gdk_x11_set_input_focus_safe (display, toplevel->focus_window,
RevertToParent,
xevent->xclient.data.l[1]);
return GDK_FILTER_REMOVE;
}
else if (atom == gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_PING") &&
!_gdk_x11_display_is_root_window (display,
xevent->xclient.window))
{
XEvent xev = *xevent;
xev.xclient.window = GDK_WINDOW_XROOTWIN (win);
XSendEvent (GDK_WINDOW_XDISPLAY (win),
xev.xclient.window,
False,
SubstructureRedirectMask | SubstructureNotifyMask, &xev);
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;
}
void
_gdk_events_queue (GdkDisplay *display)
{
GList *node;
GdkEvent *event;
XEvent xevent;
Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
while (!_gdk_event_queue_find_first(display) && XPending (xdisplay))
{
XNextEvent (xdisplay, &xevent);
switch (xevent.type)
{
case KeyPress:
case KeyRelease:
break;
default:
if (XFilterEvent (&xevent, None))
continue;
}
event = gdk_event_new (GDK_NOTHING);
event->any.window = NULL;
event->any.send_event = xevent.xany.send_event ? TRUE : FALSE;
((GdkEventPrivate *)event)->flags |= GDK_EVENT_PENDING;
node = _gdk_event_queue_append (display, event);
if (gdk_event_translate (display, event, &xevent, FALSE))
{
((GdkEventPrivate *)event)->flags &= ~GDK_EVENT_PENDING;
}
else
{
_gdk_event_queue_remove_link (display, node);
g_list_free_1 (node);
gdk_event_free (event);
}
}
}
static gboolean
gdk_event_prepare (GSource *source,
gint *timeout)
{
GdkDisplay *display = ((GdkDisplaySource*)source)->display;
gboolean retval;
GDK_THREADS_ENTER ();
*timeout = -1;
retval = (_gdk_event_queue_find_first (display) != NULL ||
gdk_check_xpending (display));
GDK_THREADS_LEAVE ();
return retval;
}
static gboolean
gdk_event_check (GSource *source)
{
GdkDisplaySource *display_source = (GdkDisplaySource*)source;
gboolean retval;
GDK_THREADS_ENTER ();
if (display_source->event_poll_fd.revents & G_IO_IN)
retval = (_gdk_event_queue_find_first (display_source->display) != NULL ||
gdk_check_xpending (display_source->display));
else
retval = FALSE;
GDK_THREADS_LEAVE ();
return retval;
}
static gboolean
gdk_event_dispatch (GSource *source,
GSourceFunc callback,
gpointer user_data)
{
GdkDisplay *display = ((GdkDisplaySource*)source)->display;
GdkEvent *event;
GDK_THREADS_ENTER ();
_gdk_events_queue (display);
event = _gdk_event_unqueue (display);
if (event)
{
if (_gdk_event_func)
(*_gdk_event_func) (event, _gdk_event_data);
gdk_event_free (event);
}
GDK_THREADS_LEAVE ();
return TRUE;
}
/**
* 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);
}
/* Sends a ClientMessage to all toplevel client windows */
static gboolean
gdk_event_send_client_message_to_all_recurse (GdkDisplay *display,
XEvent *xev,
guint32 xid,
guint level)
{
Atom type = None;
int format;
unsigned long nitems, after;
unsigned char *data;
Window *ret_children, ret_root, ret_parent;
unsigned int ret_nchildren;
gboolean send = FALSE;
gboolean found = FALSE;
gboolean result = FALSE;
int i;
gdk_error_trap_push ();
if (XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), xid,
gdk_x11_get_xatom_by_name_for_display (display, "WM_STATE"),
0, 0, False, AnyPropertyType,
&type, &format, &nitems, &after, &data) != Success)
goto out;
if (type)
{
send = TRUE;
XFree (data);
}
else
{
/* OK, we're all set, now let's find some windows to send this to */
if (!XQueryTree (GDK_DISPLAY_XDISPLAY (display), xid,
&ret_root, &ret_parent,
&ret_children, &ret_nchildren))
goto out;
for(i = 0; i < ret_nchildren; i++)
if (gdk_event_send_client_message_to_all_recurse (display, xev, ret_children[i], level + 1))
found = TRUE;
XFree (ret_children);
}
if (send || (!found && (level == 1)))
{
xev->xclient.window = xid;
_gdk_send_xevent (display, xid, False, NoEventMask, xev);
}
result = send || found;
out:
gdk_error_trap_pop ();
return result;
}
/**
* gdk_screen_broadcast_client_message:
* @screen: the #GdkScreen where the event will be broadcasted.
* @event: the #GdkEvent.
*
* On X11, sends an X ClientMessage event to all toplevel windows on
* @screen.
*
* Toplevel windows are determined by checking for the WM_STATE property,
* as described in the Inter-Client Communication Conventions Manual (ICCCM).
* If no windows are found with the WM_STATE property set, the message is
* sent to all children of the root window.
*
* On Windows, broadcasts a message registered with the name
* GDK_WIN32_CLIENT_MESSAGE to all top-level windows. The amount of
* data is limited to one long, i.e. four bytes.
*
* Since: 2.2
*/
void
gdk_screen_broadcast_client_message (GdkScreen *screen,
GdkEvent *event)
{
XEvent sev;
GdkWindow *root_window;
g_return_if_fail (event != NULL);
root_window = gdk_screen_get_root_window (screen);
/* Set up our event to send, with the exception of its target window */
sev.xclient.type = ClientMessage;
sev.xclient.display = GDK_WINDOW_XDISPLAY (root_window);
sev.xclient.format = event->client.data_format;
memcpy(&sev.xclient.data, &event->client.data, sizeof (sev.xclient.data));
sev.xclient.message_type =
gdk_x11_atom_to_xatom_for_display (GDK_WINDOW_DISPLAY (root_window),
event->client.message_type);
gdk_event_send_client_message_to_all_recurse (gdk_screen_get_display (screen),
&sev,
GDK_WINDOW_XID (root_window),
0);
}
/*
*--------------------------------------------------------------
* 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;
}
}
static Bool
timestamp_predicate (Display *display,
XEvent *xevent,
XPointer arg)
{
Window xwindow = GPOINTER_TO_UINT (arg);
GdkDisplay *gdk_display = gdk_x11_lookup_xdisplay (display);
if (xevent->type == PropertyNotify &&
xevent->xproperty.window == xwindow &&
xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (gdk_display,
"GDK_TIMESTAMP_PROP"))
return True;
return False;
}
/**
* gdk_x11_get_server_time:
* @window: a #GdkWindow, used for communication with the server.
* The window must have GDK_PROPERTY_CHANGE_MASK in its
* events mask or a hang will result.
*
* Routine to get the current X server time stamp.
*
* Return value: the time stamp.
**/
guint32
gdk_x11_get_server_time (GdkWindow *window)
{
Display *xdisplay;
Window xwindow;
guchar c = 'a';
XEvent xevent;
Atom timestamp_prop_atom;
g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
g_return_val_if_fail (!GDK_WINDOW_DESTROYED (window), 0);
xdisplay = GDK_WINDOW_XDISPLAY (window);
xwindow = GDK_WINDOW_XWINDOW (window);
timestamp_prop_atom =
gdk_x11_get_xatom_by_name_for_display (GDK_WINDOW_DISPLAY (window),
"GDK_TIMESTAMP_PROP");
XChangeProperty (xdisplay, xwindow, timestamp_prop_atom,
timestamp_prop_atom,
8, PropModeReplace, &c, 1);
XIfEvent (xdisplay, &xevent,
timestamp_predicate, GUINT_TO_POINTER(xwindow));
return xevent.xproperty.time;
}
static void
fetch_net_wm_check_window (GdkScreen *screen)
{
GdkScreenX11 *screen_x11;
GdkDisplay *display;
Atom type;
gint format;
gulong n_items;
gulong bytes_after;
Window *xwindow;
/* This function is very slow on every call if you are not running a
* spec-supporting WM. For now not optimized, because it isn't in
* any critical code paths, but if you used it somewhere that had to
* be fast you want to avoid "GTK is slow with old WMs" complaints.
* Probably at that point the function should be changed to query
* _NET_SUPPORTING_WM_CHECK only once every 10 seconds or something.
*/
screen_x11 = GDK_SCREEN_X11 (screen);
display = screen_x11->display;
if (screen_x11->wmspec_check_window != None)
return; /* already have it */
XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), screen_x11->xroot_window,
gdk_x11_get_xatom_by_name_for_display (display, "_NET_SUPPORTING_WM_CHECK"),
0, G_MAXLONG, False, XA_WINDOW, &type, &format,
&n_items, &bytes_after, (guchar **) & xwindow);
if (type != XA_WINDOW)
return;
gdk_error_trap_push ();
/* Find out if this WM goes away, so we can reset everything. */
XSelectInput (screen_x11->xdisplay, *xwindow, StructureNotifyMask);
gdk_display_sync (display);
if (gdk_error_trap_pop () == Success)
{
screen_x11->wmspec_check_window = *xwindow;
XFree (xwindow);
screen_x11->need_refetch_net_supported = TRUE;
screen_x11->need_refetch_wm_name = TRUE;
/* Careful, reentrancy */
_gdk_x11_screen_window_manager_changed (GDK_SCREEN (screen_x11));
}
}
/**
* gdk_x11_screen_get_window_manager_name:
* @screen: a #GdkScreen
*
* Returns the name of the window manager for @screen.
*
* Return value: the name of the window manager screen @screen, or
* "unknown" if the window manager is unknown. The string is owned by GDK
* and should not be freed.
*
* Since: 2.2
**/
const char*
gdk_x11_screen_get_window_manager_name (GdkScreen *screen)
{
GdkScreenX11 *screen_x11;
screen_x11 = GDK_SCREEN_X11 (screen);
fetch_net_wm_check_window (screen);
if (screen_x11->need_refetch_wm_name)
{
/* Get the name of the window manager */
screen_x11->need_refetch_wm_name = FALSE;
g_free (screen_x11->window_manager_name);
screen_x11->window_manager_name = g_strdup ("unknown");
if (screen_x11->wmspec_check_window != None)
{
Atom type;
gint format;
gulong n_items;
gulong bytes_after;
guchar *name;
name = NULL;
gdk_error_trap_push ();
XGetWindowProperty (GDK_DISPLAY_XDISPLAY (screen_x11->display),
screen_x11->wmspec_check_window,
gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
"_NET_WM_NAME"),
0, G_MAXLONG, False,
gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
"UTF8_STRING"),
&type, &format,
&n_items, &bytes_after,
(guchar **)&name);
gdk_display_sync (screen_x11->display);
gdk_error_trap_pop ();
if (name != NULL)
{
g_free (screen_x11->window_manager_name);
screen_x11->window_manager_name = g_strdup (name);
XFree (name);
}
}
}
return GDK_SCREEN_X11 (screen)->window_manager_name;
}
typedef struct _NetWmSupportedAtoms NetWmSupportedAtoms;
struct _NetWmSupportedAtoms
{
Atom *atoms;
gulong n_atoms;
};
/**
* gdk_x11_screen_supports_net_wm_hint:
* @screen: the relevant #GdkScreen.
* @property: a property atom.
*
* This function is specific to the X11 backend of GDK, and indicates
* whether the window manager supports a certain hint from the
* Extended Window Manager Hints Specification. You can find this
* specification on
* <ulink url="http://www.freedesktop.org">http://www.freedesktop.org</ulink>.
*
* When using this function, keep in mind that the window manager
* can change over time; so you shouldn't use this function in
* a way that impacts persistent application state. A common bug
* is that your application can start up before the window manager
* does when the user logs in, and before the window manager starts
* gdk_x11_screen_supports_net_wm_hint() will return %FALSE for every property.
* You can monitor the window_manager_changed signal on #GdkScreen to detect
* a window manager change.
*
* Return value: %TRUE if the window manager supports @property
*
* Since: 2.2
**/
gboolean
gdk_x11_screen_supports_net_wm_hint (GdkScreen *screen,
GdkAtom property)
{
gulong i;
GdkScreenX11 *screen_x11;
NetWmSupportedAtoms *supported_atoms;
GdkDisplay *display;
g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
screen_x11 = GDK_SCREEN_X11 (screen);
display = screen_x11->display;
supported_atoms = g_object_get_data (G_OBJECT (screen), "gdk-net-wm-supported-atoms");
if (!supported_atoms)
{
supported_atoms = g_new0 (NetWmSupportedAtoms, 1);
g_object_set_data (G_OBJECT (screen), "gdk-net-wm-supported-atoms", supported_atoms);
}
fetch_net_wm_check_window (screen);
if (screen_x11->wmspec_check_window == None)
return FALSE;
if (screen_x11->need_refetch_net_supported)
{
/* WM has changed since we last got the supported list,
* refetch it.
*/
Atom type;
gint format;
gulong bytes_after;
screen_x11->need_refetch_net_supported = FALSE;
if (supported_atoms->atoms)
XFree (supported_atoms->atoms);
supported_atoms->atoms = NULL;
supported_atoms->n_atoms = 0;
XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), screen_x11->xroot_window,
gdk_x11_get_xatom_by_name_for_display (display, "_NET_SUPPORTED"),
0, G_MAXLONG, False, XA_ATOM, &type, &format,
&supported_atoms->n_atoms, &bytes_after,
(guchar **)&supported_atoms->atoms);
if (type != XA_ATOM)
return FALSE;
}
if (supported_atoms->atoms == NULL)
return FALSE;
i = 0;
while (i < supported_atoms->n_atoms)
{
if (supported_atoms->atoms[i] == gdk_x11_atom_to_xatom_for_display (display, property))
return TRUE;
++i;
}
return FALSE;
}
/**
* gdk_net_wm_supports:
* @property: a property atom.
*
* This function is specific to the X11 backend of GDK, and indicates
* whether the window manager for the default screen supports a certain
* hint from the Extended Window Manager Hints Specification. See
* gdk_x11_screen_supports_net_wm_hint() for complete details.
*
* Return value: %TRUE if the window manager supports @property
**/
gboolean
gdk_net_wm_supports (GdkAtom property)
{
return gdk_x11_screen_supports_net_wm_hint (gdk_screen_get_default (), property);
}
static struct
{
const char *xsettings_name;
const char *gdk_name;
} settings_map[] = {
{ "Net/DoubleClickTime", "gtk-double-click-time" },
{ "Net/DoubleClickDistance", "gtk-double-click-distance" },
{ "Net/DndDragThreshold", "gtk-dnd-drag-threshold" },
{ "Net/CursorBlink", "gtk-cursor-blink" },
{ "Net/CursorBlinkTime", "gtk-cursor-blink-time" },
{ "Net/ThemeName", "gtk-theme-name" },
{ "Net/IconThemeName", "gtk-icon-theme-name" },
{ "Gtk/CanChangeAccels", "gtk-can-change-accels" },
{ "Gtk/ColorPalette", "gtk-color-palette" },
{ "Gtk/FontName", "gtk-font-name" },
{ "Gtk/IconSizes", "gtk-icon-sizes" },
{ "Gtk/KeyThemeName", "gtk-key-theme-name" },
{ "Gtk/ToolbarStyle", "gtk-toolbar-style" },
{ "Gtk/ToolbarIconSize", "gtk-toolbar-icon-size" },
{ "Gtk/IMPreeditStyle", "gtk-im-preedit-style" },
{ "Gtk/IMStatusStyle", "gtk-im-status-style" },
{ "Gtk/Modules", "gtk-modules" },
{ "Gtk/FileChooserBackend", "gtk-file-chooser-backend" },
{ "Gtk/ButtonImages", "gtk-button-images" },
{ "Gtk/MenuImages", "gtk-menu-images" },
{ "Gtk/MenuBarAccel", "gtk-menu-bar-accel" },
{ "Xft/Antialias", "gtk-xft-antialias" },
{ "Xft/Hinting", "gtk-xft-hinting" },
{ "Xft/HintStyle", "gtk-xft-hintstyle" },
{ "Xft/RGBA", "gtk-xft-rgba" },
{ "Xft/DPI", "gtk-xft-dpi" },
};
static void
gdk_xsettings_notify_cb (const char *name,
XSettingsAction action,
XSettingsSetting *setting,
void *data)
{
GdkEvent new_event;
GdkScreen *screen = data;
GdkScreenX11 *screen_x11 = data;
int i;
if (screen_x11->xsettings_in_init)
return;
new_event.type = GDK_SETTING;
new_event.setting.window = gdk_screen_get_root_window (screen);
new_event.setting.send_event = FALSE;
new_event.setting.name = NULL;
for (i = 0; i < G_N_ELEMENTS (settings_map) ; i++)
if (strcmp (settings_map[i].xsettings_name, name) == 0)
{
new_event.setting.name = (char *)settings_map[i].gdk_name;
break;
}
if (!new_event.setting.name)
return;
switch (action)
{
case XSETTINGS_ACTION_NEW:
new_event.setting.action = GDK_SETTING_ACTION_NEW;
break;
case XSETTINGS_ACTION_CHANGED:
new_event.setting.action = GDK_SETTING_ACTION_CHANGED;
break;
case XSETTINGS_ACTION_DELETED:
new_event.setting.action = GDK_SETTING_ACTION_DELETED;
break;
}
gdk_event_put (&new_event);
}
static gboolean
check_transform (const gchar *xsettings_name,
GType src_type,
GType dest_type)
{
if (!g_value_type_transformable (src_type, dest_type))
{
g_warning ("Cannot tranform xsetting %s of type %s to type %s\n",
xsettings_name,
g_type_name (src_type),
g_type_name (dest_type));
return FALSE;
}
else
return TRUE;
}
/**
* gdk_screen_get_setting:
* @screen: the #GdkScreen where the setting is located
* @name: the name of the setting
* @value: location to store the value of the setting
*
* Retrieves a desktop-wide setting such as double-click time
* for the #GdkScreen @screen.
*
* FIXME needs a list of valid settings here, or a link to
* more information.
*
* Returns: %TRUE if the setting existed and a value was stored
* in @value, %FALSE otherwise.
*
* Since: 2.2
**/
gboolean
gdk_screen_get_setting (GdkScreen *screen,
const gchar *name,
GValue *value)
{
const char *xsettings_name = NULL;
XSettingsResult result;
XSettingsSetting *setting;
GdkScreenX11 *screen_x11;
gboolean success = FALSE;
gint i;
GValue tmp_val = { 0, };
g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
screen_x11 = GDK_SCREEN_X11 (screen);
for (i = 0; i < G_N_ELEMENTS (settings_map) ; i++)
if (strcmp (settings_map[i].gdk_name, name) == 0)
{
xsettings_name = settings_map[i].xsettings_name;
break;
}
if (!xsettings_name)
return FALSE;
result = xsettings_client_get_setting (screen_x11->xsettings_client,
xsettings_name, &setting);
if (result != XSETTINGS_SUCCESS)
return FALSE;
switch (setting->type)
{
case XSETTINGS_TYPE_INT:
if (check_transform (xsettings_name, G_TYPE_INT, G_VALUE_TYPE (value)))
{
g_value_init (&tmp_val, G_TYPE_INT);
g_value_set_int (&tmp_val, setting->data.v_int);
g_value_transform (&tmp_val, value);
success = TRUE;
}
break;
case XSETTINGS_TYPE_STRING:
if (check_transform (xsettings_name, G_TYPE_STRING, G_VALUE_TYPE (value)))
{
g_value_init (&tmp_val, G_TYPE_STRING);
g_value_set_string (&tmp_val, setting->data.v_string);
g_value_transform (&tmp_val, value);
success = TRUE;
}
break;
case XSETTINGS_TYPE_COLOR:
if (!check_transform (xsettings_name, GDK_TYPE_COLOR, G_VALUE_TYPE (value)))
{
GdkColor color;
g_value_init (&tmp_val, GDK_TYPE_COLOR);
color.pixel = 0;
color.red = setting->data.v_color.red;
color.green = setting->data.v_color.green;
color.blue = setting->data.v_color.blue;
g_value_set_boxed (&tmp_val, &color);
g_value_transform (&tmp_val, value);
success = TRUE;
}
break;
}
g_value_unset (&tmp_val);
xsettings_setting_free (setting);
return success;
}
static GdkFilterReturn
gdk_xsettings_client_event_filter (GdkXEvent *xevent,
GdkEvent *event,
gpointer data)
{
GdkScreenX11 *screen = data;
if (xsettings_client_process_event (screen->xsettings_client, (XEvent *)xevent))
return GDK_FILTER_REMOVE;
else
return GDK_FILTER_CONTINUE;
}
static void
gdk_xsettings_watch_cb (Window window,
Bool is_start,
long mask,
void *cb_data)
{
GdkWindow *gdkwin;
GdkScreen *screen = cb_data;
gdkwin = gdk_window_lookup_for_display (gdk_screen_get_display (screen), window);
if (is_start)
{
if (!gdkwin)
gdkwin = gdk_window_foreign_new_for_display (gdk_screen_get_display (screen), window);
else
g_object_ref (gdkwin);
gdk_window_add_filter (gdkwin, gdk_xsettings_client_event_filter, screen);
}
else
{
g_assert (gdkwin);
gdk_window_remove_filter (gdkwin, gdk_xsettings_client_event_filter, screen);
g_object_unref (gdkwin);
}
}
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