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 17package com.android.wallpaper; 18 19import android.graphics.PixelFormat; 20import android.service.wallpaper.WallpaperService; 21import android.os.Bundle; 22import android.renderscript.RenderScriptGL; 23import android.renderscript.RenderScript; 24import android.view.SurfaceHolder; 25import android.view.Surface; 26 27public abstract class RenderScriptWallpaper<T extends RenderScriptScene> extends WallpaperService { 28 public Engine onCreateEngine() { 29 return new RenderScriptEngine(); 30 } 31 32 protected abstract T createScene(int width, int height); 33 34 private class RenderScriptEngine extends Engine { 35 private RenderScriptGL mRs; 36 private T mRenderer; 37 38 @Override 39 public void onCreate(SurfaceHolder surfaceHolder) { 40 super.onCreate(surfaceHolder); 41 setTouchEventsEnabled(false); 42 surfaceHolder.setSizeFromLayout(); 43 44 if (getResources().getBoolean(R.bool.use_32bit)) { 45 surfaceHolder.setFormat(PixelFormat.RGBX_8888); 46 } 47 } 48 49 @Override 50 public void onDestroy() { 51 super.onDestroy(); 52 destroyRenderer(); 53 } 54 55 private void destroyRenderer() { 56 if (mRenderer != null) { 57 mRenderer.stop(); 58 mRenderer = null; 59 } 60 if (mRs != null) { 61 mRs.destroy(); 62 mRs = null; 63 } 64 } 65 66 @Override 67 public void onVisibilityChanged(boolean visible) { 68 super.onVisibilityChanged(visible); 69 if (mRenderer != null) { 70 if (visible) { 71 mRenderer.start(); 72 } else { 73 mRenderer.stop(); 74 } 75 } 76 } 77 78 @Override 79 public void onSurfaceChanged(SurfaceHolder holder, int format, int width, int height) { 80 super.onSurfaceChanged(holder, format, width, height); 81 if (mRs != null) { 82 mRs.contextSetSurface(width, height, holder.getSurface()); 83 } 84 if (mRenderer == null) { 85 mRenderer = createScene(width, height); 86 mRenderer.init(mRs, getResources(), isPreview()); 87 mRenderer.start(); 88 } else { 89 mRenderer.resize(width, height); 90 } 91 } 92 93 @Override 94 public void onOffsetsChanged(float xOffset, float yOffset, 95 float xStep, float yStep, int xPixels, int yPixels) { 96 mRenderer.setOffset(xOffset, yOffset, xPixels, yPixels); 97 } 98 99 @Override 100 public void onSurfaceCreated(SurfaceHolder holder) { 101 super.onSurfaceCreated(holder); 102 103 Surface surface = null; 104 while (surface == null) { 105 surface = holder.getSurface(); 106 } 107 mRs = new RenderScriptGL(false, false); 108 mRs.contextSetPriority(RenderScript.Priority.LOW); 109 } 110 111 @Override 112 public void onSurfaceDestroyed(SurfaceHolder holder) { 113 super.onSurfaceDestroyed(holder); 114 destroyRenderer(); 115 } 116 117 @Override 118 public Bundle onCommand(String action, int x, int y, int z, 119 Bundle extras, boolean resultRequested) { 120 return mRenderer.onCommand(action, x, y, z, extras, resultRequested); 121 } 122 123 } 124} 125