static void
add_device_presence_filter (GsdPointingDeviceManager *manager)
{
Display *display;
XEventClass class_presence;
gint xi_presence;
gint op_code, event, error;
if (!XQueryExtension(GDK_DISPLAY(),
"XInputExtension",
&op_code,
&event,
&error)) {
return;
}
display = gdk_x11_get_default_xdisplay();
gdk_error_trap_push();
DevicePresence(display, xi_presence, class_presence);
XSelectExtensionEvent(display,
RootWindow(display, DefaultScreen(display)),
&class_presence, 1);
gdk_flush();
if (!gdk_error_trap_pop())
gdk_window_add_filter(NULL, device_presence_filter, manager);
}
static GdkFilterReturn
device_presence_filter (GdkXEvent *xevent,
GdkEvent *event,
gpointer data)
{
XEvent *xev = (XEvent *)xevent;
XEventClass class_presence;
int xi_presence;
GpdsXInput *xinput;
GsdPointingDeviceManager *manager = GSD_POINTING_DEVICE_MANAGER(data);
xinput = gsd_pointing_device_manager_get_xinput(manager);
if (!xinput)
return GDK_FILTER_CONTINUE;
DevicePresence(gdk_x11_get_default_xdisplay(), xi_presence, class_presence);
if (xev->type == xi_presence) {
XDevicePresenceNotifyEvent *notify_event = (XDevicePresenceNotifyEvent *)xev;
if (notify_event->devchange == DeviceEnabled ||
notify_event->devchange == DeviceRemoved) {
set_disable_while_other_device_exists(manager,
xinput,
gconf_client_get_default());
}
}
g_object_unref(xinput);
return GDK_FILTER_CONTINUE;
}
int XInputEventNotifier::registerForNewDeviceEvent(Display* display)
{
int xitype;
XEventClass xiclass;
DevicePresence(display, xitype, xiclass);
XSelectExtensionEvent(display, DefaultRootWindow(display), &xiclass, 1);
kDebug() << "Registered for new device events from XInput, class" << xitype;
xinputEventType = xitype;
return xitype;
}
