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