1/* 2 * Copyright (C) 2012 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.dreams.basic; 18 19import android.graphics.SurfaceTexture; 20import android.service.dreams.DreamService; 21import android.util.Log; 22import android.view.TextureView; 23import android.os.Handler; 24import android.os.HandlerThread; 25 26/** 27 * Plays a delightful show of colors. 28 * <p> 29 * This dream performs its rendering using OpenGL on a separate rendering thread. 30 * </p> 31 */ 32public class Colors extends DreamService implements TextureView.SurfaceTextureListener { 33 static final String TAG = Colors.class.getSimpleName(); 34 static final boolean DEBUG = false; 35 36 public static void LOG(String fmt, Object... args) { 37 if (!DEBUG) return; 38 Log.v(TAG, String.format(fmt, args)); 39 } 40 41 private TextureView mTextureView; 42 43 // The handler thread and handler on which the GL renderer is running. 44 private HandlerThread mRendererHandlerThread; 45 private Handler mRendererHandler; 46 47 // The current GL renderer, or null if the dream is not running. 48 private ColorsGLRenderer mRenderer; 49 50 @Override 51 public void onCreate() { 52 super.onCreate(); 53 54 setInteractive(false); 55 56 mTextureView = new TextureView(this); 57 mTextureView.setSurfaceTextureListener(this); 58 59 if (mRendererHandlerThread == null) { 60 mRendererHandlerThread = new HandlerThread(TAG); 61 mRendererHandlerThread.start(); 62 mRendererHandler = new Handler(mRendererHandlerThread.getLooper()); 63 } 64 } 65 66 @Override 67 public void onAttachedToWindow() { 68 setInteractive(false); 69 setLowProfile(true); 70 setFullscreen(true); 71 setContentView(mTextureView); 72 } 73 74 @Override 75 public void onSurfaceTextureAvailable(final SurfaceTexture surface, 76 final int width, final int height) { 77 LOG("onSurfaceTextureAvailable(%s, %d, %d)", surface, width, height); 78 79 mRendererHandler.post(new Runnable() { 80 @Override 81 public void run() { 82 if (mRenderer != null) { 83 mRenderer.stop(); 84 } 85 mRenderer = new ColorsGLRenderer(surface, width, height); 86 mRenderer.start(); 87 } 88 }); 89 } 90 91 @Override 92 public void onSurfaceTextureSizeChanged(SurfaceTexture surface, 93 final int width, final int height) { 94 LOG("onSurfaceTextureSizeChanged(%s, %d, %d)", surface, width, height); 95 96 mRendererHandler.post(new Runnable() { 97 @Override 98 public void run() { 99 if (mRenderer != null) { 100 mRenderer.setSize(width, height); 101 } 102 } 103 }); 104 } 105 106 @Override 107 public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) { 108 LOG("onSurfaceTextureDestroyed(%s)", surface); 109 110 mRendererHandler.post(new Runnable() { 111 @Override 112 public void run() { 113 if (mRenderer != null) { 114 mRenderer.stop(); 115 mRenderer = null; 116 } 117 mRendererHandlerThread.quit(); 118 } 119 }); 120 121 try { 122 mRendererHandlerThread.join(); 123 } catch (InterruptedException e) { 124 LOG("Error while waiting for renderer", e); 125 } 126 127 return true; 128 } 129 130 @Override 131 public void onSurfaceTextureUpdated(SurfaceTexture surface) { 132 LOG("onSurfaceTextureUpdated(%s)", surface); 133 } 134} 135