/*
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* Copyright (C) 2019 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 com.android.server.wm;
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import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_RECENTS_ANIMATIONS;
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import android.graphics.GraphicBuffer;
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import android.graphics.Rect;
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import android.util.Slog;
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import android.view.Surface;
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import android.view.SurfaceControl;
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import android.view.SurfaceSession;
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/**
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* Class used by {@link RecentsAnimationController} to create a surface control with taking
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* screenshot of task when canceling recents animation.
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*
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* @see {@link RecentsAnimationController#cancelOnNextTransitionStart}
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*/
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class TaskScreenshotAnimatable implements SurfaceAnimator.Animatable {
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private static final String TAG = "TaskScreenshotAnim";
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private Task mTask;
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private SurfaceControl mSurfaceControl;
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private int mWidth;
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private int mHeight;
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public static TaskScreenshotAnimatable create(Task task) {
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return new TaskScreenshotAnimatable(task, getBufferFromTask(task));
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}
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private static SurfaceControl.ScreenshotGraphicBuffer getBufferFromTask(Task task) {
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if (task == null) {
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return null;
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}
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final Rect tmpRect = task.getBounds();
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tmpRect.offset(0, 0);
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return SurfaceControl.captureLayers(
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task.getSurfaceControl().getHandle(), tmpRect, 1f);
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}
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private TaskScreenshotAnimatable(Task task,
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SurfaceControl.ScreenshotGraphicBuffer screenshotBuffer) {
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GraphicBuffer buffer = screenshotBuffer == null
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? null : screenshotBuffer.getGraphicBuffer();
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mTask = task;
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mWidth = (buffer != null) ? buffer.getWidth() : 1;
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mHeight = (buffer != null) ? buffer.getHeight() : 1;
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if (DEBUG_RECENTS_ANIMATIONS) {
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Slog.d(TAG, "Creating TaskScreenshotAnimatable: task: " + task
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+ "width: " + mWidth + "height: " + mHeight);
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}
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mSurfaceControl = new SurfaceControl.Builder(new SurfaceSession())
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.setName("RecentTaskScreenshotSurface")
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.setBufferSize(mWidth, mHeight)
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.build();
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if (buffer != null) {
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final Surface surface = new Surface();
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surface.copyFrom(mSurfaceControl);
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surface.attachAndQueueBuffer(buffer);
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surface.release();
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}
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getPendingTransaction().show(mSurfaceControl);
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}
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@Override
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public SurfaceControl.Transaction getPendingTransaction() {
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return mTask.getPendingTransaction();
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}
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@Override
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public void commitPendingTransaction() {
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mTask.commitPendingTransaction();
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}
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@Override
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public void onAnimationLeashCreated(SurfaceControl.Transaction t, SurfaceControl leash) {
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t.setLayer(leash, 1);
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}
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@Override
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public void onAnimationLeashLost(SurfaceControl.Transaction t) {
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if (mSurfaceControl != null) {
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t.remove(mSurfaceControl);
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mSurfaceControl = null;
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}
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}
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@Override
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public SurfaceControl.Builder makeAnimationLeash() {
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return mTask.makeAnimationLeash();
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}
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@Override
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public SurfaceControl getAnimationLeashParent() {
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return mTask.getAnimationLeashParent();
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}
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@Override
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public SurfaceControl getSurfaceControl() {
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return mSurfaceControl;
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}
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@Override
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public SurfaceControl getParentSurfaceControl() {
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return mTask.mSurfaceControl;
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}
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@Override
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public int getSurfaceWidth() {
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return mWidth;
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}
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@Override
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public int getSurfaceHeight() {
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return mHeight;
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}
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}
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