1 /* 2 * Copyright (C) 2009 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.wallpaper; 18 19 import android.service.wallpaper.WallpaperService; 20 import android.os.Bundle; 21 import android.renderscript.RenderScriptGL; 22 import android.renderscript.RenderScript; 23 import android.view.SurfaceHolder; 24 import android.view.Surface; 25 26 public abstract class RenderScriptWallpaper<T extends RenderScriptScene> extends WallpaperService { onCreateEngine()27 public Engine onCreateEngine() { 28 return new RenderScriptEngine(); 29 } 30 createScene(int width, int height)31 protected abstract T createScene(int width, int height); 32 33 private class RenderScriptEngine extends Engine { 34 private RenderScriptGL mRs; 35 private T mRenderer; 36 37 @Override onCreate(SurfaceHolder surfaceHolder)38 public void onCreate(SurfaceHolder surfaceHolder) { 39 super.onCreate(surfaceHolder); 40 setTouchEventsEnabled(false); 41 surfaceHolder.setSizeFromLayout(); 42 } 43 44 @Override onDestroy()45 public void onDestroy() { 46 super.onDestroy(); 47 destroyRenderer(); 48 } 49 destroyRenderer()50 private void destroyRenderer() { 51 if (mRenderer != null) { 52 mRenderer.stop(); 53 mRenderer = null; 54 } 55 if (mRs != null) { 56 mRs.setSurface(null, 0, 0); 57 mRs.destroy(); 58 mRs = null; 59 } 60 } 61 62 @Override onVisibilityChanged(boolean visible)63 public void onVisibilityChanged(boolean visible) { 64 super.onVisibilityChanged(visible); 65 if (mRenderer != null) { 66 if (visible) { 67 mRenderer.start(); 68 } else { 69 mRenderer.stop(); 70 } 71 } 72 } 73 74 @Override onSurfaceChanged(SurfaceHolder holder, int format, int width, int height)75 public void onSurfaceChanged(SurfaceHolder holder, int format, int width, int height) { 76 super.onSurfaceChanged(holder, format, width, height); 77 if (mRs != null) { 78 mRs.setSurface(holder, width, height); 79 } 80 if (mRenderer == null) { 81 mRenderer = createScene(width, height); 82 mRenderer.init(mRs, getResources(), isPreview()); 83 mRenderer.start(); 84 } else { 85 mRenderer.resize(width, height); 86 } 87 } 88 89 @Override onOffsetsChanged(float xOffset, float yOffset, float xStep, float yStep, int xPixels, int yPixels)90 public void onOffsetsChanged(float xOffset, float yOffset, 91 float xStep, float yStep, int xPixels, int yPixels) { 92 if (mRenderer != null) mRenderer.setOffset(xOffset, yOffset, xPixels, yPixels); 93 } 94 95 @Override onSurfaceCreated(SurfaceHolder holder)96 public void onSurfaceCreated(SurfaceHolder holder) { 97 super.onSurfaceCreated(holder); 98 99 RenderScriptGL.SurfaceConfig sc = new RenderScriptGL.SurfaceConfig(); 100 mRs = new RenderScriptGL(RenderScriptWallpaper.this, sc); 101 mRs.setPriority(RenderScript.Priority.LOW); 102 } 103 104 @Override onSurfaceDestroyed(SurfaceHolder holder)105 public void onSurfaceDestroyed(SurfaceHolder holder) { 106 super.onSurfaceDestroyed(holder); 107 destroyRenderer(); 108 } 109 110 @Override onCommand(String action, int x, int y, int z, Bundle extras, boolean resultRequested)111 public Bundle onCommand(String action, int x, int y, int z, 112 Bundle extras, boolean resultRequested) { 113 if (mRenderer != null) { 114 return mRenderer.onCommand(action, x, y, z, extras, resultRequested); 115 } else { 116 return null; 117 } 118 } 119 120 } 121 } 122