clutter: Drop clutter_input_device_set_coords()

Input devices aren't "updated" anymore, but their state queried to the
seat. This goes nowhere.

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

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

@@ -119,8 +119,6 @@ struct _ClutterInputDevice
   int click_count;
 
   /* the current state */
-  float current_x;
-  float current_y;
   int current_button_number;
   ClutterModifierType current_state;
 
@@ -171,11 +169,6 @@ CLUTTER_EXPORT
 void clutter_input_device_update_from_tool (ClutterInputDevice     *device,
                                             ClutterInputDeviceTool *tool);
 CLUTTER_EXPORT
-void _clutter_input_device_set_coords (ClutterInputDevice   *device,
-                                       ClutterEventSequence *sequence,
-                                       gfloat                x,
-                                       gfloat                y);
-CLUTTER_EXPORT
 ClutterActor * clutter_input_device_update (ClutterInputDevice   *device,
                                             ClutterEventSequence *sequence,
                                             ClutterStage         *stage,

clutter/clutter/clutter-input-device.c

@@ -486,8 +486,8 @@ clutter_input_device_init (ClutterInputDevice *self)
   self->click_count = 0;
 
   self->previous_time = CLUTTER_CURRENT_TIME;
-  self->current_x = self->previous_x = -1;
+  self->previous_x = -1;
-  self->current_y = self->previous_y = -1;
+  self->previous_y = -1;
   self->current_button_number = self->previous_button_number = -1;
 
   self->touch_sequences_info =
@@ -514,40 +514,6 @@ _clutter_input_device_ensure_touch_info (ClutterInputDevice *device,
   return info;
 }
 
-/*< private >
- * clutter_input_device_set_coords:
- * @device: a #ClutterInputDevice
- * @sequence: a #ClutterEventSequence or NULL
- * @x: X coordinate of the device
- * @y: Y coordinate of the device
- *
- * Stores the last known coordinates of the device
- */
-void
-_clutter_input_device_set_coords (ClutterInputDevice   *device,
-                                  ClutterEventSequence *sequence,
-                                  gfloat                x,
-                                  gfloat                y)
-{
-  g_return_if_fail (CLUTTER_IS_INPUT_DEVICE (device));
-
-  if (sequence == NULL)
-    {
-      if (device->current_x != x)
-        device->current_x = x;
-
-      if (device->current_y != y)
-        device->current_y = y;
-    }
-  else
-    {
-      ClutterTouchInfo *info;
-      info = _clutter_input_device_ensure_touch_info (device, sequence);
-      info->current_x = x;
-      info->current_y = y;
-    }
-}
-
 /**
  * clutter_input_device_get_modifier_state:
  * @device: a #ClutterInputDevice

clutter/clutter/clutter-stage.c

@@ -648,7 +648,6 @@ _clutter_stage_queue_event (ClutterStage *stage,
 {
   ClutterStagePrivate *priv;
   gboolean first_event;
-  ClutterInputDevice *device;
 
   g_return_if_fail (CLUTTER_IS_STAGE (stage));
 
@@ -659,23 +658,6 @@ _clutter_stage_queue_event (ClutterStage *stage,
   if (copy_event)
     event = clutter_event_copy (event);
 
-  /* if needed, update the state of the input device of the event.
-   * we do it here to avoid calling the same code from every backend
-   * event processing function
-   */
-  device = clutter_event_get_device (event);
-  if (device != NULL &&
-      event->type != CLUTTER_PROXIMITY_IN &&
-      event->type != CLUTTER_PROXIMITY_OUT)
-    {
-      ClutterEventSequence *sequence = clutter_event_get_event_sequence (event);
-      gfloat event_x, event_y;
-
-      clutter_event_get_coords (event, &event_x, &event_y);
-
-      _clutter_input_device_set_coords (device, sequence, event_x, event_y);
-    }
-
   if (first_event)
     {
       gboolean compressible = event->type == CLUTTER_MOTION ||