| /* |
| * Copyright (C) 2011 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.acceleration; |
| |
| import android.content.Context; |
| import android.graphics.Canvas; |
| import android.util.AttributeSet; |
| import android.view.View; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| public class AcceleratedView extends View { |
| |
| private final CountDownLatch mDrawLatch = new CountDownLatch(1); |
| |
| private boolean mIsHardwareAccelerated; |
| |
| public AcceleratedView(Context context) { |
| super(context); |
| } |
| |
| public AcceleratedView(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| } |
| |
| public AcceleratedView(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| } |
| |
| @Override |
| protected void onDraw(Canvas canvas) { |
| super.onDraw(canvas); |
| synchronized (this) { |
| mIsHardwareAccelerated = canvas.isHardwareAccelerated(); |
| } |
| mDrawLatch.countDown(); |
| } |
| |
| public boolean isCanvasHardwareAccelerated() { |
| try { |
| if (mDrawLatch.await(1, TimeUnit.SECONDS)) { |
| synchronized (this) { |
| return mIsHardwareAccelerated; |
| } |
| } else { |
| throw new IllegalStateException("View was not drawn..."); |
| } |
| } catch (InterruptedException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |