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79 lines
2.5 KiB
79 lines
2.5 KiB
9 years ago
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/* Copyright 2014 The Chromium Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* From private/ppb_input_event_private.idl,
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* modified Tue May 20 18:31:39 2014.
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*/
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#ifndef PPAPI_C_PRIVATE_PPB_INPUT_EVENT_PRIVATE_H_
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#define PPAPI_C_PRIVATE_PPB_INPUT_EVENT_PRIVATE_H_
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#include "ppapi/c/pp_bool.h"
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#include "ppapi/c/pp_instance.h"
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#include "ppapi/c/pp_macros.h"
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#include "ppapi/c/pp_resource.h"
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#include "ppapi/c/pp_stdint.h"
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#define PPB_INPUTEVENT_PRIVATE_INTERFACE_0_1 "PPB_InputEvent_Private;0.1"
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#define PPB_INPUTEVENT_PRIVATE_INTERFACE PPB_INPUTEVENT_PRIVATE_INTERFACE_0_1
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/**
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* @file
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* This file defines the PPB_InputEvent_Private interfaces.
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*/
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/**
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* @addtogroup Interfaces
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* @{
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*/
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/**
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* The <code>PPB_InputEvent_Private</code> interface contains pointers to
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several
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* functions related to generic input events on the browser.
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*/
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struct PPB_InputEvent_Private_0_1 {
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/**
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* TraceInputLatency() traces the latency of the input event. The input
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* latency is shown in the trace viewer. The starting point of the input
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* latency is when the input event is sent from renderer to plugin. If the
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* input event does not cause any rendering damage, the end point of input
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* latency is when TraceInputLatency() is called on the event. If the input
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* event does cause rendering damage, the end point of input latency is when
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* the resulted plugin frame eventually reaches screen.
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*
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* Notes: In the current version, only Graphics2D damage is considered as
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* rendering damage. And it works only when the Graphics2Ds are bound to
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* the plugin instance.
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*
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* @param[in] event A <code>PP_Resource</code> corresponding to an input
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* event.
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*
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* @param[in] has_damage A bool indicating whether the event has caused any
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* rendering damage.
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*
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* @return <code>PP_TRUE</code> if the latency for the given event is tracked.
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*/
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PP_Bool (*TraceInputLatency)(PP_Resource event, PP_Bool has_damage);
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/**
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* StartTrackingLatency() requests input latency to be tracked.
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*
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* Without calling StartTrackingLatency() first, TraceInputLatency() won't
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* take effect.
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*
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* @param[in] instance The <code>PP_Instance</code> of the instance requesting
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* to start tracking input latency.
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*/
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void (*StartTrackingLatency)(PP_Instance instance);
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};
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typedef struct PPB_InputEvent_Private_0_1 PPB_InputEvent_Private;
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/**
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* @}
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*/
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#endif /* PPAPI_C_PRIVATE_PPB_INPUT_EVENT_PRIVATE_H_ */
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