/**
* clutter_input_device_update_from_event:
* @device: a #ClutterInputDevice
* @event: a #ClutterEvent
* @update_stage: whether to update the #ClutterStage of the @device
* using the stage of the event
*
* Forcibly updates the state of the @device using a #ClutterEvent
*
* This function should never be used by applications: it is meant
* for integration with embedding toolkits, like clutter-gtk
*
* Embedding toolkits that disable the event collection inside Clutter
* need to use this function to update the state of input devices depending
* on a #ClutterEvent that they are going to submit to the event handling code
* in Clutter though clutter_do_event(). Since the input devices hold the state
* that is going to be used to fill in fields like the #ClutterButtonEvent
* click count, or to emit synthesized events like %CLUTTER_ENTER and
* %CLUTTER_LEAVE, it is necessary for embedding toolkits to also be
* responsible of updating the input device state.
*
* For instance, this might be the code to translate an embedding toolkit
* native motion notification into a Clutter #ClutterMotionEvent and ask
* Clutter to process it:
*
* |[
* ClutterEvent c_event;
*
* translate_native_event_to_clutter (native_event, &c_event);
*
* clutter_do_event (&c_event);
* ]|
*
* Before letting clutter_do_event() process the event, it is necessary to call
* clutter_input_device_update_from_event():
*
* |[
* ClutterEvent c_event;
* ClutterDeviceManager *manager;
* ClutterInputDevice *device;
*
* translate_native_event_to_clutter (native_event, &c_event);
*
* /* get the device manager */
* manager = clutter_device_manager_get_default ();
*
* /* use the default Core Pointer that Clutter
* * backends register by default
* */
* device = clutter_device_manager_get_core_device (manager, %CLUTTER_POINTER_DEVICE);
*
* /* update the state of the input device */
* clutter_input_device_update_from_event (device, &c_event, FALSE);
*
* clutter_do_event (&c_event);
* ]|
*
* The @update_stage boolean argument should be used when the input device
* enters and leaves a #ClutterStage; it will use the #ClutterStage field
* of the passed @event to update the stage associated to the input device.
*
* Since: 1.2
*/
void
clutter_input_device_update_from_event (ClutterInputDevice *device,
ClutterEvent *event,
gboolean update_stage)
{
ClutterModifierType event_state;
ClutterStage *event_stage;
gfloat event_x, event_y;
guint32 event_time;
g_return_if_fail (CLUTTER_IS_INPUT_DEVICE (device));
g_return_if_fail (event != NULL);
event_state = clutter_event_get_state (event);
event_time = clutter_event_get_time (event);
event_stage = clutter_event_get_stage (event);
clutter_event_get_coords (event, &event_x, &event_y);
_clutter_input_device_set_coords (device, event_x, event_y);
_clutter_input_device_set_state (device, event_state);
_clutter_input_device_set_time (device, event_time);
if (update_stage)
_clutter_input_device_set_stage (device, event_stage);
}
ClutterSeatEvdev *
clutter_seat_evdev_new (ClutterDeviceManagerEvdev *manager_evdev)
{
ClutterDeviceManager *manager = CLUTTER_DEVICE_MANAGER (manager_evdev);
ClutterSeatEvdev *seat;
ClutterInputDevice *device;
ClutterStage *stage;
ClutterKeymap *keymap;
struct xkb_keymap *xkb_keymap;
seat = g_new0 (ClutterSeatEvdev, 1);
if (!seat)
return NULL;
seat->manager_evdev = manager_evdev;
device = _clutter_input_device_evdev_new_virtual (
manager, seat, CLUTTER_POINTER_DEVICE,
CLUTTER_INPUT_MODE_MASTER);
stage = _clutter_device_manager_evdev_get_stage (manager_evdev);
_clutter_input_device_set_stage (device, stage);
seat->pointer_x = INITIAL_POINTER_X;
seat->pointer_y = INITIAL_POINTER_Y;
_clutter_input_device_set_coords (device, NULL,
seat->pointer_x, seat->pointer_y,
NULL);
_clutter_device_manager_add_device (manager, device);
seat->core_pointer = device;
device = _clutter_input_device_evdev_new_virtual (
manager, seat, CLUTTER_KEYBOARD_DEVICE,
CLUTTER_INPUT_MODE_MASTER);
_clutter_input_device_set_stage (device, stage);
_clutter_device_manager_add_device (manager, device);
seat->core_keyboard = device;
seat->repeat = TRUE;
seat->repeat_delay = 250; /* ms */
seat->repeat_interval = 33; /* ms */
keymap = clutter_backend_get_keymap (clutter_get_default_backend ());
xkb_keymap = clutter_keymap_evdev_get_keyboard_map (CLUTTER_KEYMAP_EVDEV (keymap));
if (xkb_keymap)
{
seat->xkb = xkb_state_new (xkb_keymap);
seat->caps_lock_led =
xkb_keymap_led_get_index (xkb_keymap, XKB_LED_NAME_CAPS);
seat->num_lock_led =
xkb_keymap_led_get_index (xkb_keymap, XKB_LED_NAME_NUM);
seat->scroll_lock_led =
xkb_keymap_led_get_index (xkb_keymap, XKB_LED_NAME_SCROLL);
}
return seat;
}
