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      1 /*
      2  * Copyright (C) 2010 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.galaxy4;
     18 
     19 import android.graphics.PixelFormat;
     20 import android.os.Bundle;
     21 import android.os.Handler;
     22 import android.os.Message;
     23 import android.renderscript.RenderScript;
     24 import android.renderscript.RenderScriptGL;
     25 import android.util.DisplayMetrics;
     26 import android.service.wallpaper.WallpaperService;
     27 import android.view.Surface;
     28 import android.view.SurfaceHolder;
     29 import android.view.WindowManager;
     30 import android.app.Service;
     31 
     32 public class Galaxy4Wallpaper extends WallpaperService {
     33 
     34     @Override
     35     public Engine onCreateEngine() {
     36         return new RenderScriptEngine();
     37     }
     38 
     39     private class RenderScriptEngine extends Engine {
     40         private RenderScriptGL mRenderScript = null;
     41         private GalaxyRS mWallpaperRS = null;
     42         private int mDensityDPI;
     43 
     44         @Override
     45         public void onCreate(SurfaceHolder surfaceHolder) {
     46             super.onCreate(surfaceHolder);
     47             setTouchEventsEnabled(true);
     48             surfaceHolder.setSizeFromLayout();
     49             surfaceHolder.setFormat(PixelFormat.RGBA_8888);
     50 
     51             DisplayMetrics metrics = new DisplayMetrics();
     52             ((WindowManager) getApplication().getSystemService(Service.WINDOW_SERVICE))
     53                     .getDefaultDisplay().getMetrics(metrics);
     54             mDensityDPI = metrics.densityDpi;
     55         }
     56 
     57         @Override
     58         public void onDestroy() {
     59             super.onDestroy();
     60             destroyRenderer();
     61         }
     62 
     63         public void destroyRenderer() {
     64             if (mWallpaperRS != null) {
     65                 mWallpaperRS.stop();
     66                 mWallpaperRS = null;
     67             }
     68 
     69             if (mRenderScript != null) {
     70                 mRenderScript.setSurface(null, 0, 0);
     71                 mRenderScript.destroy();
     72                 mRenderScript = null;
     73             }
     74         }
     75 
     76         @Override
     77         public void onSurfaceCreated(SurfaceHolder surfaceHolder) {
     78             super.onSurfaceCreated(surfaceHolder);
     79 
     80             RenderScriptGL.SurfaceConfig sc = new RenderScriptGL.SurfaceConfig();
     81             mRenderScript = new RenderScriptGL(Galaxy4Wallpaper.this, sc);
     82             mRenderScript.setPriority(RenderScript.Priority.LOW);
     83         }
     84 
     85         @Override
     86         public void onSurfaceDestroyed(SurfaceHolder surfaceHolder) {
     87             super.onSurfaceDestroyed(surfaceHolder);
     88             destroyRenderer();
     89         }
     90 
     91         @Override
     92         public void onSurfaceChanged(SurfaceHolder surfaceHolder,
     93                                      int format, int width, int height) {
     94             super.onSurfaceChanged(surfaceHolder, format, width, height);
     95 
     96             if (mRenderScript != null) {
     97                 mRenderScript.setSurface(surfaceHolder, width, height);
     98             }
     99 
    100             if (mWallpaperRS == null) {
    101                 mWallpaperRS = new GalaxyRS();
    102                 mWallpaperRS.init(mDensityDPI, mRenderScript, getResources(), width, height);
    103                 mWallpaperRS.start();
    104             } else {
    105                 mWallpaperRS.resize(width, height);
    106             }
    107 
    108         }
    109 
    110         @Override
    111         public Bundle onCommand(String action, int x, int y, int z, Bundle extras,
    112                 boolean resultRequested) {
    113             if (mWallpaperRS != null) {
    114                 // return mWallpaperRS.onCommand(action, x, y, z, extras, resultRequested);
    115             }
    116             return null;
    117         }
    118 
    119         @Override
    120         public void onVisibilityChanged(boolean visible) {
    121             super.onVisibilityChanged(visible);
    122             if (mWallpaperRS != null) {
    123                 if (visible) {
    124                     mWallpaperRS.start();
    125                 } else {
    126                     mWallpaperRS.stop();
    127                 }
    128             }
    129         }
    130     }
    131 }