81 lines
2.3 KiB
Java
81 lines
2.3 KiB
Java
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.view;
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import android.graphics.FrameInfo;
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import android.os.IInputConstants;
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/**
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* The timing information of events taking place in ViewRootImpl
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* @hide
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*/
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public class ViewFrameInfo {
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public long drawStart;
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// Various flags set to provide extra metadata about the current frame. See flag definitions
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// inside FrameInfo.
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// @see android.graphics.FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED
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public long flags;
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private int mInputEventId;
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private int mViewsMeasuredCounts;
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/**
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* Populate the missing fields using the data from ViewFrameInfo
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* @param frameInfo : the structure FrameInfo object to populate
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*/
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public void populateFrameInfo(FrameInfo frameInfo) {
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frameInfo.frameInfo[FrameInfo.FLAGS] |= flags;
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frameInfo.frameInfo[FrameInfo.DRAW_START] = drawStart;
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frameInfo.frameInfo[FrameInfo.INPUT_EVENT_ID] = mInputEventId;
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}
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/**
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* Reset this data. Should typically be invoked after calling "populateFrameInfo".
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*/
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public void reset() {
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drawStart = 0;
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mInputEventId = IInputConstants.INVALID_INPUT_EVENT_ID;
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flags = 0;
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mViewsMeasuredCounts = 0;
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}
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/**
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* Record the current time, and store it in 'drawStart'
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*/
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public void markDrawStart() {
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drawStart = System.nanoTime();
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}
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/**
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* Record the number of view being measured for the current frame.
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*/
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public int getAndIncreaseViewMeasuredCount() {
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return ++mViewsMeasuredCounts;
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}
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/**
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* Assign the value for input event id
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* @param eventId the id of the input event
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*/
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public void setInputEvent(int eventId) {
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mInputEventId = eventId;
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}
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}
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