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.cooliris.wallpaper; 18 19 import java.io.IOException; 20 import java.net.URISyntaxException; 21 22 import com.cooliris.cache.CacheService; 23 import com.cooliris.cache.ImageList; 24 import com.cooliris.media.UriTexture; 25 import com.cooliris.media.Util; 26 27 import android.content.Context; 28 import android.graphics.Bitmap; 29 30 public class RandomDataSource implements Slideshow.DataSource { 31 getBitmapForIndex(Context context, int currentSlideshowCounter)32 public Bitmap getBitmapForIndex(Context context, int currentSlideshowCounter) { 33 ImageList list = CacheService.getImageList(context); 34 // Once we have the id and the thumbid, we can return a bitmap 35 // First we select a random numbers 36 if (list.ids == null) 37 return null; 38 double random = Math.random(); 39 random *= list.ids.length; 40 int index = (int) random; 41 long cacheId = list.thumbids[index]; 42 final String uri = CacheService.BASE_CONTENT_STRING_IMAGES + list.ids[index]; 43 Bitmap retVal = null; 44 try { 45 retVal = UriTexture.createFromUri(context, uri, UriTexture.MAX_RESOLUTION, UriTexture.MAX_RESOLUTION, cacheId, null); 46 if (retVal != null) { 47 retVal = Util.rotate(retVal, list.orientation[index]); 48 } 49 } catch (OutOfMemoryError e) { 50 ; 51 } catch (IOException e) { 52 ; 53 } catch (URISyntaxException e) { 54 ; 55 } 56 return retVal; 57 } 58 59 } 60