| /* Copyright 2014 The Chromium Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| /** |
| * This file defines the PPB_InputEvent_Private interfaces. |
| */ |
| |
| label Chrome { |
| M37 = 0.1 |
| }; |
| |
| /** |
| * The <code>PPB_InputEvent_Private</code> interface contains pointers to several |
| * functions related to generic input events on the browser. |
| */ |
| |
| interface PPB_InputEvent_Private { |
| /** |
| * TraceInputLatency() traces the latency of the input event. The input |
| * latency is shown in the trace viewer. The starting point of the input |
| * latency is when the input event is sent from renderer to plugin. If the |
| * input event does not cause any rendering damage, the end point of input |
| * latency is when TraceInputLatency() is called on the event. If the input |
| * event does cause rendering damage, the end point of input latency is when |
| * the resulted plugin frame eventually reaches screen. |
| * |
| * Notes: In the current version, only Graphics2D damage is considered as |
| * rendering damage. And it works only when the Graphics2Ds are bound to |
| * the plugin instance. |
| * |
| * @param[in] event A <code>PP_Resource</code> corresponding to an input |
| * event. |
| * |
| * @param[in] has_damage A bool indicating whether the event has caused any |
| * rendering damage. |
| * |
| * @return <code>PP_TRUE</code> if the latency for the given event is tracked. |
| */ |
| PP_Bool TraceInputLatency([in] PP_Resource event, |
| [in] PP_Bool has_damage); |
| |
| /** |
| * StartTrackingLatency() requests input latency to be tracked. |
| * |
| * Without calling StartTrackingLatency() first, TraceInputLatency() won't |
| * take effect. |
| * |
| * @param[in] instance The <code>PP_Instance</code> of the instance requesting |
| * to start tracking input latency. |
| */ |
| void StartTrackingLatency([in] PP_Instance instance); |
| }; |