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/*
* Copyright (C) 2014 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 com.android.test.hwui;
import android.app.Activity;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.os.Bundle;
import android.view.Gravity;
import android.view.Surface;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.widget.FrameLayout;
@SuppressWarnings({"UnusedDeclaration"})
public class HardwareCanvasSurfaceViewActivity extends Activity implements Callback {
private SurfaceView mSurfaceView;
private HardwareCanvasSurfaceViewActivity.RenderingThread mThread;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FrameLayout content = new FrameLayout(this);
mSurfaceView = new SurfaceView(this);
mSurfaceView.getHolder().addCallback(this);
content.addView(mSurfaceView, new FrameLayout.LayoutParams(
FrameLayout.LayoutParams.MATCH_PARENT,
FrameLayout.LayoutParams.MATCH_PARENT,
Gravity.CENTER));
setContentView(content);
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
mThread = new RenderingThread(holder.getSurface());
mThread.start();
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
mThread.setSize(width, height);
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
if (mThread != null) mThread.stopRendering();
}
private static class RenderingThread extends Thread {
private final Surface mSurface;
private volatile boolean mRunning = true;
private int mWidth, mHeight;
public RenderingThread(Surface surface) {
mSurface = surface;
}
void setSize(int width, int height) {
mWidth = width;
mHeight = height;
}
@Override
public void run() {
float x = 0.0f;
float y = 0.0f;
float speedX = 5.0f;
float speedY = 3.0f;
Paint paint = new Paint();
paint.setColor(0xff00ff00);
while (mRunning && !Thread.interrupted()) {
final Canvas canvas = mSurface.lockHardwareCanvas();
try {
canvas.drawColor(0x00000000, PorterDuff.Mode.CLEAR);
canvas.drawRect(x, y, x + 20.0f, y + 20.0f, paint);
} finally {
mSurface.unlockCanvasAndPost(canvas);
}
if (x + 20.0f + speedX >= mWidth || x + speedX <= 0.0f) {
speedX = -speedX;
}
if (y + 20.0f + speedY >= mHeight || y + speedY <= 0.0f) {
speedY = -speedY;
}
x += speedX;
y += speedY;
try {
Thread.sleep(15);
} catch (InterruptedException e) {
// Interrupted
}
}
}
void stopRendering() {
interrupt();
mRunning = false;
}
}
}
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