static gboolean
clutter_backend_x11_translate_event (ClutterBackend *backend,
gpointer native,
ClutterEvent *event)
{
ClutterBackendX11 *backend_x11 = CLUTTER_BACKEND_X11 (backend);
ClutterBackendClass *parent_class;
XEvent *xevent = native;
/* X11 filter functions have a higher priority */
if (backend_x11->event_filters != NULL)
{
GSList *node = backend_x11->event_filters;
while (node != NULL)
{
ClutterX11EventFilter *filter = node->data;
switch (filter->func (xevent, event, filter->data))
{
case CLUTTER_X11_FILTER_CONTINUE:
break;
case CLUTTER_X11_FILTER_TRANSLATE:
return TRUE;
case CLUTTER_X11_FILTER_REMOVE:
return FALSE;
default:
break;
}
node = node->next;
}
}
/* we update the event time only for events that can
* actually reach Clutter's event queue
*/
update_last_event_time (backend_x11, xevent);
/* chain up to the parent implementation, which will handle
* event translators
*/
parent_class = CLUTTER_BACKEND_CLASS (clutter_backend_x11_parent_class);
return parent_class->translate_event (backend, native, event);
}
static gboolean
event_translate (ClutterBackend *backend,
ClutterEvent *event,
XEvent *xevent)
{
ClutterBackendX11 *backend_x11;
ClutterStageX11 *stage_x11;
ClutterStage *stage;
ClutterStageWindow *impl;
ClutterDeviceManager *manager;
gboolean res, not_yet_handled = FALSE;
Window xwindow, stage_xwindow;
ClutterInputDevice *device;
backend_x11 = CLUTTER_BACKEND_X11 (backend);
xwindow = xevent->xany.window;
if (backend_x11->event_filters)
{
GSList *node;
node = backend_x11->event_filters;
while (node)
{
ClutterX11EventFilter *filter = node->data;
switch (filter->func (xevent, event, filter->data))
{
case CLUTTER_X11_FILTER_CONTINUE:
break;
case CLUTTER_X11_FILTER_TRANSLATE:
return TRUE;
case CLUTTER_X11_FILTER_REMOVE:
return FALSE;
default:
break;
}
node = node->next;
}
}
/* Do further processing only on events for the stage window (the x11
* filters might be getting events for other windows, so do not mess
* them about.
*/
stage = clutter_x11_get_stage_from_window (xwindow);
if (stage == NULL)
return FALSE;
impl = _clutter_stage_get_window (stage);
stage_x11 = CLUTTER_STAGE_X11 (impl);
stage_xwindow = xwindow; /* clutter_x11_get_stage_window (stage); */
event->any.stage = stage;
res = TRUE;
update_last_event_time (backend_x11, xevent);
manager = clutter_device_manager_get_default ();
switch (xevent->type)
{
case ConfigureNotify:
if (!stage_x11->is_foreign_xwin)
{
CLUTTER_NOTE (BACKEND, "%s: ConfigureNotify[%x] (%d, %d)",
G_STRLOC,
(unsigned int) stage_x11->xwin,
xevent->xconfigure.width,
xevent->xconfigure.height);
/* Queue a relayout - we want glViewport to be called
* with the correct values, and this is done in ClutterStage
* via _cogl_onscreen_clutter_backend_set_size ().
*
* We queue a relayout, because if this ConfigureNotify is
* in response to a size we set in the application, the
* set_size above is essentially a null-op.
*
* Make sure we do this only when the size has changed,
* otherwise we end up relayouting on window moves.
*/
if ((stage_x11->state & CLUTTER_STAGE_STATE_FULLSCREEN) ||
(stage_x11->xwin_width != xevent->xconfigure.width) ||
(stage_x11->xwin_height != xevent->xconfigure.height))
clutter_actor_queue_relayout (CLUTTER_ACTOR (stage));
/* If we're fullscreened, we want these variables to
* represent the size of the window before it was set
* to fullscreen.
*/
if (!(stage_x11->state & CLUTTER_STAGE_STATE_FULLSCREEN))
{
stage_x11->xwin_width = xevent->xconfigure.width;
stage_x11->xwin_height = xevent->xconfigure.height;
}
clutter_actor_set_size (CLUTTER_ACTOR (stage),
xevent->xconfigure.width,
xevent->xconfigure.height);
CLUTTER_UNSET_PRIVATE_FLAGS (stage_x11->wrapper,
CLUTTER_STAGE_IN_RESIZE);
/* the resize process is complete, so we can ask the stage
* to set up the GL viewport with the new size
*/
clutter_stage_ensure_viewport (stage);
}
res = FALSE;
break;
case PropertyNotify:
if (xevent->xproperty.atom == backend_x11->atom_NET_WM_STATE &&
xevent->xproperty.window == stage_xwindow &&
!stage_x11->is_foreign_xwin)
{
Atom type;
gint format;
gulong n_items, bytes_after;
guchar *data = NULL;
gboolean fullscreen_set = FALSE;
clutter_x11_trap_x_errors ();
XGetWindowProperty (backend_x11->xdpy, stage_xwindow,
backend_x11->atom_NET_WM_STATE,
0, G_MAXLONG,
False, XA_ATOM,
&type, &format, &n_items,
&bytes_after, &data);
clutter_x11_untrap_x_errors ();
if (type != None && data != NULL)
{
Atom *atoms = (Atom *) data;
gulong i;
gboolean is_fullscreen = FALSE;
for (i = 0; i < n_items; i++)
{
if (atoms[i] == backend_x11->atom_NET_WM_STATE_FULLSCREEN)
fullscreen_set = TRUE;
}
is_fullscreen =
(stage_x11->state & CLUTTER_STAGE_STATE_FULLSCREEN);
if (fullscreen_set != is_fullscreen)
{
if (fullscreen_set)
stage_x11->state |= CLUTTER_STAGE_STATE_FULLSCREEN;
else
stage_x11->state &= ~CLUTTER_STAGE_STATE_FULLSCREEN;
stage_x11->fullscreening = fullscreen_set;
event->type = CLUTTER_STAGE_STATE;
event->stage_state.changed_mask =
CLUTTER_STAGE_STATE_FULLSCREEN;
event->stage_state.new_state = stage_x11->state;
}
else
res = FALSE;
XFree (data);
}
else
res = FALSE;
}
else
res = FALSE;
break;
case MapNotify:
res = FALSE;
break;
case UnmapNotify:
res = FALSE;
break;
case FocusIn:
if (!(stage_x11->state & CLUTTER_STAGE_STATE_ACTIVATED))
{
/* TODO: check xevent->xfocus.detail ? */
stage_x11->state |= CLUTTER_STAGE_STATE_ACTIVATED;
event->type = CLUTTER_STAGE_STATE;
event->stage_state.changed_mask = CLUTTER_STAGE_STATE_ACTIVATED;
event->stage_state.new_state = stage_x11->state;
}
else
res = FALSE;
break;
case FocusOut:
if (stage_x11->state & CLUTTER_STAGE_STATE_ACTIVATED)
{
stage_x11->state &= ~CLUTTER_STAGE_STATE_ACTIVATED;
event->type = CLUTTER_STAGE_STATE;
event->stage_state.changed_mask = CLUTTER_STAGE_STATE_ACTIVATED;
event->stage_state.new_state = stage_x11->state;
}
else
res = FALSE;
break;
case Expose:
{
CLUTTER_NOTE (MULTISTAGE, "expose for stage: %p, redrawing", stage);
clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
res = FALSE;
}
break;
case DestroyNotify:
CLUTTER_NOTE (EVENT, "destroy notify:\txid: %ld",
xevent->xdestroywindow.window);
if (xevent->xdestroywindow.window == stage_xwindow &&
!stage_x11->is_foreign_xwin)
event->type = event->any.type = CLUTTER_DESTROY_NOTIFY;
else
res = FALSE;
break;
case ClientMessage:
CLUTTER_NOTE (EVENT, "client message");
event->type = event->any.type = CLUTTER_CLIENT_MESSAGE;
if (xevent->xclient.message_type == backend_x11->atom_XEMBED)
res = handle_xembed_event (backend_x11, xevent);
else if (xevent->xclient.message_type == backend_x11->atom_WM_PROTOCOLS)
{
res = handle_wm_protocols_event (backend_x11, stage_xwindow, xevent);
event->type = event->any.type = CLUTTER_DELETE;
}
break;
case KeyPress:
event->key.type = event->type = CLUTTER_KEY_PRESS;
event->key.device =
clutter_device_manager_get_core_device (manager,
CLUTTER_KEYBOARD_DEVICE);
translate_key_event (backend, event, xevent);
set_user_time (backend_x11, &xwindow, xevent->xkey.time);
break;
case KeyRelease:
/* old-style X11 terminals require that even modern X11 send
* KeyPress/KeyRelease pairs when auto-repeating. for this
* reason modern(-ish) API like XKB has a way to detect
* auto-repeat and do a single KeyRelease at the end of a
* KeyPress sequence.
*
* this check emulates XKB's detectable auto-repeat; we peek
* the next event and check if it's a KeyPress for the same key
* and timestamp - and then ignore it if it matches the
* KeyRelease
*/
if (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)
{
res = FALSE;
break;
}
}
event->key.type = event->type = CLUTTER_KEY_RELEASE;
event->key.device =
clutter_device_manager_get_core_device (manager,
CLUTTER_KEYBOARD_DEVICE);
translate_key_event (backend, event, xevent);
break;
default:
/* ignore every other event */
not_yet_handled = TRUE;
break;
}
/* Input device event handling.. */
if (not_yet_handled)
{
device = clutter_device_manager_get_core_device (manager,
CLUTTER_POINTER_DEVICE);
/* Regular X event */
switch (xevent->type)
{
case ButtonPress:
switch (xevent->xbutton.button)
{
case 4: /* up */
case 5: /* down */
case 6: /* left */
case 7: /* right */
event->scroll.type = event->type = CLUTTER_SCROLL;
if (xevent->xbutton.button == 4)
event->scroll.direction = CLUTTER_SCROLL_UP;
else if (xevent->xbutton.button == 5)
event->scroll.direction = CLUTTER_SCROLL_DOWN;
else if (xevent->xbutton.button == 6)
event->scroll.direction = CLUTTER_SCROLL_LEFT;
else
event->scroll.direction = CLUTTER_SCROLL_RIGHT;
event->scroll.time = xevent->xbutton.time;
event->scroll.x = xevent->xbutton.x;
event->scroll.y = xevent->xbutton.y;
event->scroll.modifier_state = xevent->xbutton.state;
event->scroll.device = device;
break;
default:
event->button.type = event->type = CLUTTER_BUTTON_PRESS;
event->button.time = xevent->xbutton.time;
event->button.x = xevent->xbutton.x;
event->button.y = xevent->xbutton.y;
event->button.modifier_state = xevent->xbutton.state;
event->button.button = xevent->xbutton.button;
event->button.device = device;
break;
}
set_user_time (backend_x11, &xwindow, event->button.time);
res = TRUE;
break;
case ButtonRelease:
/* scroll events don't have a corresponding release */
if (xevent->xbutton.button == 4 ||
xevent->xbutton.button == 5 ||
xevent->xbutton.button == 6 ||
xevent->xbutton.button == 7)
{
res = FALSE;
goto out;
}
event->button.type = event->type = CLUTTER_BUTTON_RELEASE;
event->button.time = xevent->xbutton.time;
event->button.x = xevent->xbutton.x;
event->button.y = xevent->xbutton.y;
event->button.modifier_state = xevent->xbutton.state;
event->button.button = xevent->xbutton.button;
event->button.device = device;
res = TRUE;
break;
case MotionNotify:
event->motion.type = event->type = CLUTTER_MOTION;
event->motion.time = xevent->xmotion.time;
event->motion.x = xevent->xmotion.x;
event->motion.y = xevent->xmotion.y;
event->motion.modifier_state = xevent->xmotion.state;
event->motion.device = device;
res = TRUE;
break;
case EnterNotify:
/* we know that we are entering the stage here */
_clutter_input_device_set_stage (device, stage);
CLUTTER_NOTE (EVENT, "Entering the stage");
/* Convert enter notifies to motion events because X
doesn't emit the corresponding motion notify */
event->motion.type = event->type = CLUTTER_MOTION;
event->motion.time = xevent->xcrossing.time;
event->motion.x = xevent->xcrossing.x;
event->motion.y = xevent->xcrossing.y;
event->motion.modifier_state = xevent->xcrossing.state;
event->motion.source = CLUTTER_ACTOR (stage);
event->motion.device = device;
res = TRUE;
break;
case LeaveNotify:
if (device->stage == NULL)
{
CLUTTER_NOTE (EVENT,
"Discarding LeaveNotify for ButtonRelease "
"event off-stage");
res = FALSE;
goto out;
}
/* we know that we are leaving the stage here */
_clutter_input_device_set_stage (device, NULL);
CLUTTER_NOTE (EVENT, "Leaving the stage (time:%u)",
event->crossing.time);
event->crossing.type = event->type = CLUTTER_LEAVE;
event->crossing.time = xevent->xcrossing.time;
event->crossing.x = xevent->xcrossing.x;
event->crossing.y = xevent->xcrossing.y;
event->crossing.source = CLUTTER_ACTOR (stage);
event->crossing.device = device;
res = TRUE;
break;
default:
res = FALSE;
break;
}
}
/* XInput fun...*/
if (!res && clutter_x11_has_xinput ())
{
#ifdef HAVE_XINPUT
int *ev_types = backend_x11->event_types;
int button_press, button_release;
int key_press, key_release;
int motion_notify;
button_press = ev_types[CLUTTER_X11_XINPUT_BUTTON_PRESS_EVENT];
button_release = ev_types[CLUTTER_X11_XINPUT_BUTTON_RELEASE_EVENT];
motion_notify = ev_types[CLUTTER_X11_XINPUT_MOTION_NOTIFY_EVENT];
key_press = ev_types[CLUTTER_X11_XINPUT_KEY_PRESS_EVENT];
key_release = ev_types[CLUTTER_X11_XINPUT_KEY_RELEASE_EVENT];
CLUTTER_NOTE (EVENT, "XInput event type: %d", xevent->type);
if (xevent->type == button_press)
{
XDeviceButtonEvent *xbev = (XDeviceButtonEvent *) xevent;
device = _clutter_x11_get_device_for_xid (xbev->deviceid);
_clutter_input_device_set_stage (device, stage);
CLUTTER_NOTE (EVENT,
"XI ButtonPress for %li ('%s') at %d, %d",
xbev->deviceid,
device->device_name,
xbev->x,
xbev->y);
switch (xbev->button)
{
case 4:
case 5:
case 6:
case 7:
event->scroll.type = event->type = CLUTTER_SCROLL;
if (xbev->button == 4)
event->scroll.direction = CLUTTER_SCROLL_UP;
else if (xbev->button == 5)
event->scroll.direction = CLUTTER_SCROLL_DOWN;
else if (xbev->button == 6)
event->scroll.direction = CLUTTER_SCROLL_LEFT;
else
event->scroll.direction = CLUTTER_SCROLL_RIGHT;
event->scroll.time = xbev->time;
event->scroll.x = xbev->x;
event->scroll.y = xbev->y;
event->scroll.modifier_state = xbev->state;
event->scroll.device = device;
break;
default:
event->button.type = event->type = CLUTTER_BUTTON_PRESS;
event->button.time = xbev->time;
event->button.x = xbev->x;
event->button.y = xbev->y;
event->button.modifier_state = xbev->state;
event->button.button = xbev->button;
event->button.device = device;
break;
}
set_user_time (backend_x11, &xwindow, xbev->time);
res = TRUE;
}
else if (xevent->type == button_release)
{
XDeviceButtonEvent *xbev = (XDeviceButtonEvent *)xevent;
device = _clutter_x11_get_device_for_xid (xbev->deviceid);
_clutter_input_device_set_stage (device, stage);
CLUTTER_NOTE (EVENT, "XI ButtonRelease for %li ('%s') at %d, %d",
xbev->deviceid,
device->device_name,
xbev->x,
xbev->y);
/* scroll events don't have a corresponding release */
if (xbev->button == 4 ||
xbev->button == 5 ||
xbev->button == 6 ||
xbev->button == 7)
{
res = FALSE;
goto out;
}
event->button.type = event->type = CLUTTER_BUTTON_RELEASE;
event->button.time = xbev->time;
event->button.x = xbev->x;
event->button.y = xbev->y;
event->button.modifier_state = xbev->state;
event->button.button = xbev->button;
event->button.device = device;
res = TRUE;
}
else if (xevent->type == motion_notify)
{
XDeviceMotionEvent *xmev = (XDeviceMotionEvent *)xevent;
device = _clutter_x11_get_device_for_xid (xmev->deviceid);
_clutter_input_device_set_stage (device, stage);
CLUTTER_NOTE (EVENT, "XI Motion for %li ('%s') at %d, %d",
xmev->deviceid,
device->device_name,
xmev->x,
xmev->y);
event->motion.type = event->type = CLUTTER_MOTION;
event->motion.time = xmev->time;
event->motion.x = xmev->x;
event->motion.y = xmev->y;
event->motion.modifier_state = xmev->state;
event->motion.device = device;
res = TRUE;
}
else if (xevent->type == key_press || xevent->type == key_release)
{
/* the XInput 1.x handling of key presses/releases is broken:
* it makes key repeat, key presses and releases outside the
* window not generate events even when the window has focus
*/
XDeviceKeyEvent *xkev = (XDeviceKeyEvent *) xevent;
XEvent xevent_converted;
convert_xdevicekey_to_xkey (xkev, &xevent_converted);
event->key.type = event->type = (xevent->type == key_press)
? CLUTTER_KEY_PRESS
: CLUTTER_KEY_RELEASE;
translate_key_event (backend, event, &xevent_converted);
if (xevent->type == key_press)
set_user_time (backend_x11, &xwindow, xkev->time);
}
else
#endif /* HAVE_XINPUT */
{
CLUTTER_NOTE (EVENT, "Uknown Event");
res = FALSE;
}
}
out:
return res;
}
