1 /* 2 * Copyright (C) 2012 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.gallery3d.data; 18 19 import android.graphics.Bitmap; 20 import android.graphics.BitmapRegionDecoder; 21 22 import com.android.gallery3d.ui.ScreenNail; 23 import com.android.gallery3d.util.ThreadPool.Job; 24 import com.android.gallery3d.util.ThreadPool.JobContext; 25 26 // SnailItem is a MediaItem which can provide a ScreenNail. This is 27 // used so we can show an foreign component (like an 28 // android.view.View) instead of a Bitmap. 29 public class SnailItem extends MediaItem { 30 @SuppressWarnings("unused") 31 private static final String TAG = "SnailItem"; 32 private ScreenNail mScreenNail; 33 34 public SnailItem(Path path) { 35 super(path, nextVersionNumber()); 36 } 37 38 @Override 39 public Job<Bitmap> requestImage(int type) { 40 // nothing to return 41 return new Job<Bitmap>() { 42 @Override 43 public Bitmap run(JobContext jc) { 44 return null; 45 } 46 }; 47 } 48 49 @Override 50 public Job<BitmapRegionDecoder> requestLargeImage() { 51 // nothing to return 52 return new Job<BitmapRegionDecoder>() { 53 @Override 54 public BitmapRegionDecoder run(JobContext jc) { 55 return null; 56 } 57 }; 58 } 59 60 // We do not provide requestImage or requestLargeImage, instead we 61 // provide a ScreenNail. 62 @Override 63 public ScreenNail getScreenNail() { 64 return mScreenNail; 65 } 66 67 @Override 68 public String getMimeType() { 69 return ""; 70 } 71 72 // Returns width and height of the media item. 73 // Returns 0, 0 if the information is not available. 74 @Override 75 public int getWidth() { 76 return 0; 77 } 78 79 @Override 80 public int getHeight() { 81 return 0; 82 } 83 84 ////////////////////////////////////////////////////////////////////////// 85 // Extra methods for SnailItem 86 ////////////////////////////////////////////////////////////////////////// 87 88 public void setScreenNail(ScreenNail screenNail) { 89 mScreenNail = screenNail; 90 } 91 92 public void updateVersion() { 93 mDataVersion = nextVersionNumber(); 94 } 95 } 96
