1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.test.hwui;
18
19import android.app.Activity;
20import android.graphics.Canvas;
21import android.graphics.Paint;
22import android.graphics.PorterDuff;
23import android.graphics.SurfaceTexture;
24import android.os.Bundle;
25import android.view.Gravity;
26import android.view.Surface;
27import android.view.TextureView;
28import android.widget.FrameLayout;
29
30@SuppressWarnings({"UnusedDeclaration"})
31public class HardwareCanvasTextureViewActivity extends Activity
32        implements TextureView.SurfaceTextureListener {
33    private TextureView mTextureView;
34    private HardwareCanvasTextureViewActivity.RenderingThread mThread;
35
36    @Override
37    protected void onCreate(Bundle savedInstanceState) {
38        super.onCreate(savedInstanceState);
39
40        FrameLayout content = new FrameLayout(this);
41
42        mTextureView = new TextureView(this);
43        mTextureView.setSurfaceTextureListener(this);
44        mTextureView.setOpaque(false);
45
46        content.addView(mTextureView, new FrameLayout.LayoutParams(500, 500, Gravity.CENTER));
47        setContentView(content);
48    }
49
50    @Override
51    public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
52        mThread = new RenderingThread(mTextureView);
53        mThread.start();
54    }
55
56    @Override
57    public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
58        // Ignored
59    }
60
61    @Override
62    public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
63        if (mThread != null) mThread.stopRendering();
64        return true;
65    }
66
67    @Override
68    public void onSurfaceTextureUpdated(SurfaceTexture surface) {
69        // Ignored
70    }
71
72    private static class RenderingThread extends Thread {
73        private final TextureView mView;
74        private final Surface mSurface;
75        private volatile boolean mRunning = true;
76
77        public RenderingThread(TextureView view) {
78            mView = view;
79            mSurface = new Surface(mView.getSurfaceTexture());
80        }
81
82        @Override
83        public void run() {
84            float x = 0.0f;
85            float y = 0.0f;
86            float speedX = 5.0f;
87            float speedY = 3.0f;
88
89            Paint paint = new Paint();
90            paint.setColor(0xff00ff00);
91
92            while (mRunning && !Thread.interrupted()) {
93                final Canvas canvas = mSurface.lockHardwareCanvas();
94                try {
95                    canvas.drawColor(0x00000000, PorterDuff.Mode.CLEAR);
96                    canvas.drawRect(x, y, x + 20.0f, y + 20.0f, paint);
97                } finally {
98                    mSurface.unlockCanvasAndPost(canvas);
99                }
100
101                if (x + 20.0f + speedX >= mView.getWidth() || x + speedX <= 0.0f) {
102                    speedX = -speedX;
103                }
104                if (y + 20.0f + speedY >= mView.getHeight() || y + speedY <= 0.0f) {
105                    speedY = -speedY;
106                }
107
108                x += speedX;
109                y += speedY;
110
111                try {
112                    Thread.sleep(15);
113                } catch (InterruptedException e) {
114                    // Interrupted
115                }
116            }
117        }
118
119        void stopRendering() {
120            interrupt();
121            mRunning = false;
122        }
123    }
124}
125