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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.view;
import android.graphics.FrameInfo;
/**
* The timing information of events taking place in ViewRootImpl
* @hide
*/
public class ViewFrameInfo {
public long drawStart;
public long oldestInputEventTime; // the time of the oldest input event consumed for this frame
public long newestInputEventTime; // the time of the newest input event consumed for this frame
// Various flags set to provide extra metadata about the current frame. See flag definitions
// inside FrameInfo.
// @see android.graphics.FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED
public long flags;
/**
* Update the oldest event time.
* @param eventTime the time of the input event
*/
public void updateOldestInputEvent(long eventTime) {
if (oldestInputEventTime == 0 || eventTime < oldestInputEventTime) {
oldestInputEventTime = eventTime;
}
}
/**
* Update the newest event time.
* @param eventTime the time of the input event
*/
public void updateNewestInputEvent(long eventTime) {
if (newestInputEventTime == 0 || eventTime > newestInputEventTime) {
newestInputEventTime = eventTime;
}
}
/**
* Populate the missing fields using the data from ViewFrameInfo
* @param frameInfo : the structure FrameInfo object to populate
*/
public void populateFrameInfo(FrameInfo frameInfo) {
frameInfo.frameInfo[FrameInfo.FLAGS] |= flags;
frameInfo.frameInfo[FrameInfo.DRAW_START] = drawStart;
// TODO(b/169866723): Use InputEventAssigner
frameInfo.frameInfo[FrameInfo.INPUT_EVENT_ID] = newestInputEventTime;
}
/**
* Reset this data. Should typically be invoked after calling "populateFrameInfo".
*/
public void reset() {
drawStart = 0;
oldestInputEventTime = 0;
newestInputEventTime = 0;
flags = 0;
}
/**
* Record the current time, and store it in 'drawStart'
*/
public void markDrawStart() {
drawStart = System.nanoTime();
}
}
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