[go: nahoru, domu]
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.Bitmap;
21import android.graphics.Canvas;
22import android.graphics.Paint;
23import android.graphics.PorterDuff;
24import android.os.Bundle;
25import android.os.Environment;
26import android.view.PixelCopy;
27import android.view.Surface;
28import android.view.SurfaceHolder;
29import android.view.SurfaceHolder.Callback;
30import android.view.SurfaceView;
31import android.view.View;
32import android.widget.Button;
33import android.widget.FrameLayout;
34import android.widget.LinearLayout;
35import android.widget.Toast;
36
37import java.io.FileOutputStream;
38
39public class HardwareCanvasSurfaceViewActivity extends Activity implements Callback {
40    private SurfaceView mSurfaceView;
41    private HardwareCanvasSurfaceViewActivity.RenderingThread mThread;
42
43    @Override
44    protected void onCreate(Bundle savedInstanceState) {
45        super.onCreate(savedInstanceState);
46
47        FrameLayout content = new FrameLayout(this);
48
49        mSurfaceView = new SurfaceView(this);
50        mSurfaceView.getHolder().addCallback(this);
51
52        Button button = new Button(this);
53        button.setText("Copy bitmap to /sdcard/surfaceview.png");
54        button.setOnClickListener((View v) -> {
55            final Bitmap b = Bitmap.createBitmap(
56                    mSurfaceView.getWidth(), mSurfaceView.getHeight(),
57                    Bitmap.Config.ARGB_8888);
58            PixelCopy.request(mSurfaceView, b,
59                    (int result) -> {
60                        if (result != PixelCopy.SUCCESS) {
61                            Toast.makeText(HardwareCanvasSurfaceViewActivity.this,
62                                    "Failed to copy", Toast.LENGTH_SHORT).show();
63                            return;
64                        }
65                        try {
66                            try (FileOutputStream out = new FileOutputStream(
67                                    Environment.getExternalStorageDirectory() + "/surfaceview.png");) {
68                                b.compress(Bitmap.CompressFormat.PNG, 100, out);
69                            }
70                        } catch (Exception e) {
71                            // Ignore
72                        }
73                    }, mSurfaceView.getHandler());
74        });
75
76        LinearLayout layout = new LinearLayout(this);
77        layout.setOrientation(LinearLayout.VERTICAL);
78        layout.addView(button, LinearLayout.LayoutParams.MATCH_PARENT,
79                LinearLayout.LayoutParams.WRAP_CONTENT);
80        layout.addView(mSurfaceView, LinearLayout.LayoutParams.MATCH_PARENT,
81                LinearLayout.LayoutParams.MATCH_PARENT);
82
83        content.addView(layout, new FrameLayout.LayoutParams(
84                FrameLayout.LayoutParams.MATCH_PARENT,
85                FrameLayout.LayoutParams.MATCH_PARENT));
86        setContentView(content);
87    }
88
89    @Override
90    public void surfaceCreated(SurfaceHolder holder) {
91        mThread = new RenderingThread(holder.getSurface());
92        mThread.start();
93    }
94
95    @Override
96    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
97        mThread.setSize(width, height);
98    }
99
100    @Override
101    public void surfaceDestroyed(SurfaceHolder holder) {
102        if (mThread != null) mThread.stopRendering();
103    }
104
105    private static class RenderingThread extends Thread {
106        private final Surface mSurface;
107        private volatile boolean mRunning = true;
108        private int mWidth, mHeight;
109
110        public RenderingThread(Surface surface) {
111            mSurface = surface;
112        }
113
114        void setSize(int width, int height) {
115            mWidth = width;
116            mHeight = height;
117        }
118
119        @Override
120        public void run() {
121            float x = 0.0f;
122            float y = 0.0f;
123            float speedX = 5.0f;
124            float speedY = 3.0f;
125
126            Paint paint = new Paint();
127            paint.setColor(0xff00ff00);
128
129            while (mRunning && !Thread.interrupted()) {
130                final Canvas canvas = mSurface.lockHardwareCanvas();
131                try {
132                    canvas.drawColor(0x00000000, PorterDuff.Mode.CLEAR);
133                    canvas.drawRect(x, y, x + 20.0f, y + 20.0f, paint);
134                } finally {
135                    mSurface.unlockCanvasAndPost(canvas);
136                }
137
138                if (x + 20.0f + speedX >= mWidth || x + speedX <= 0.0f) {
139                    speedX = -speedX;
140                }
141                if (y + 20.0f + speedY >= mHeight || y + speedY <= 0.0f) {
142                    speedY = -speedY;
143                }
144
145                x += speedX;
146                y += speedY;
147
148                try {
149                    Thread.sleep(15);
150                } catch (InterruptedException e) {
151                    // Interrupted
152                }
153            }
154        }
155
156        void stopRendering() {
157            interrupt();
158            mRunning = false;
159        }
160    }
161}
162