clutter: Drop clutter_input_device_update_from_event()

Input devices aren't "updated" anymore, but their state queried to
the seat instead. This API was only meant for embedders of Clutter,
and is pointless to us.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1403>

clutter/clutter/clutter-input-device-private.h

@@ -236,9 +236,6 @@ ClutterInputDeviceTool *
                                      ClutterInputDeviceToolType  type);
 
 CLUTTER_EXPORT
-void clutter_input_device_update_from_event (ClutterInputDevice  *device,
-                                             ClutterEvent        *event);
-CLUTTER_EXPORT
 gboolean clutter_input_device_keycode_to_evdev (ClutterInputDevice *device,
                                                 guint               hardware_keycode,
                                                 guint              *evdev_keycode);

clutter/clutter/clutter-input-device.c

@@ -1022,83 +1022,6 @@ clutter_input_device_get_device_mode (ClutterInputDevice *device)
   return device->device_mode;
 }
 
-/**
- * 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 seat
- *   seat = clutter_backend_get_deafult_seat (clutter_get_default_backend ());
- *
- *   // use the default Core Pointer that Clutter backends register by default
- *   device = clutter_seat_get_pointer (seat);
- *
- *   // update the state of the input device
- *   clutter_input_device_update_from_event (device, &c_event);
- *
- *   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)
-{
-  ClutterEventSequence *sequence;
-  gfloat event_x, event_y;
-
-  g_return_if_fail (CLUTTER_IS_INPUT_DEVICE (device));
-  g_return_if_fail (event != NULL);
-
-  sequence = clutter_event_get_event_sequence (event);
-  clutter_event_get_coords (event, &event_x, &event_y);
-
-  _clutter_input_device_set_coords (device, sequence, event_x, event_y);
-}
-
 /*< private >
  * clutter_input_device_reset_axes:
  * @device: a #ClutterInputDevice

src/tests/clutter/performance/test-common.h

@@ -110,7 +110,6 @@ static gboolean perf_fake_mouse_cb (gpointer stage)
       event2->crossing.related = NULL;
 
       clutter_event_set_device (event2, device);
-      clutter_input_device_update_from_event (device, event2);
 
       clutter_event_put (event2);
       clutter_event_free (event2);