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 private static final String TAG = "SnailItem"; 31 private ScreenNail mScreenNail; 32 33 public SnailItem(Path path) { 34 super(path, nextVersionNumber()); 35 } 36 37 @Override 38 public Job<Bitmap> requestImage(int type) { 39 // nothing to return 40 return new Job<Bitmap>() { 41 public Bitmap run(JobContext jc) { 42 return null; 43 } 44 }; 45 } 46 47 @Override 48 public Job<BitmapRegionDecoder> requestLargeImage() { 49 // nothing to return 50 return new Job<BitmapRegionDecoder>() { 51 public BitmapRegionDecoder run(JobContext jc) { 52 return null; 53 } 54 }; 55 } 56 57 // We do not provide requestImage or requestLargeImage, instead we 58 // provide a ScreenNail. 59 @Override 60 public ScreenNail getScreenNail() { 61 return mScreenNail; 62 } 63 64 @Override 65 public String getMimeType() { 66 return ""; 67 } 68 69 // Returns width and height of the media item. 70 // Returns 0, 0 if the information is not available. 71 @Override 72 public int getWidth() { 73 return 0; 74 } 75 76 @Override 77 public int getHeight() { 78 return 0; 79 } 80 81 ////////////////////////////////////////////////////////////////////////// 82 // Extra methods for SnailItem 83 ////////////////////////////////////////////////////////////////////////// 84 85 public void setScreenNail(ScreenNail screenNail) { 86 mScreenNail = screenNail; 87 } 88 89 public void updateVersion() { 90 mDataVersion = nextVersionNumber(); 91 } 92 } 93
