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 17 package com.android.test.hwui; 18 19 import android.app.Activity; 20 import android.graphics.Bitmap; 21 import android.graphics.Canvas; 22 import android.graphics.Paint; 23 import android.graphics.PorterDuff; 24 import android.os.Bundle; 25 import android.os.Environment; 26 import android.view.PixelCopy; 27 import android.view.Surface; 28 import android.view.SurfaceHolder; 29 import android.view.SurfaceHolder.Callback; 30 import android.view.SurfaceView; 31 import android.view.View; 32 import android.widget.Button; 33 import android.widget.FrameLayout; 34 import android.widget.LinearLayout; 35 import android.widget.Toast; 36 37 import java.io.FileOutputStream; 38 39 public class HardwareCanvasSurfaceViewActivity extends Activity implements Callback { 40 private SurfaceView mSurfaceView; 41 private HardwareCanvasSurfaceViewActivity.RenderingThread mThread; 42 43 @Override onCreate(Bundle savedInstanceState)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 surfaceCreated(SurfaceHolder holder)90 public void surfaceCreated(SurfaceHolder holder) { 91 mThread = new RenderingThread(holder); 92 mThread.start(); 93 } 94 95 @Override surfaceChanged(SurfaceHolder holder, int format, int width, int height)96 public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { 97 mThread.setSize(width, height); 98 } 99 100 @Override surfaceDestroyed(SurfaceHolder holder)101 public void surfaceDestroyed(SurfaceHolder holder) { 102 if (mThread != null) mThread.stopRendering(); 103 } 104 105 private static class RenderingThread extends Thread { 106 private final SurfaceHolder mSurface; 107 private volatile boolean mRunning = true; 108 private int mWidth, mHeight; 109 RenderingThread(SurfaceHolder surface)110 public RenderingThread(SurfaceHolder surface) { 111 mSurface = surface; 112 } 113 setSize(int width, int height)114 void setSize(int width, int height) { 115 mWidth = width; 116 mHeight = height; 117 } 118 119 @Override run()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 stopRendering()156 void stopRendering() { 157 interrupt(); 158 mRunning = false; 159 } 160 } 161 } 162
