1 /* 2 * Copyright (C) 2017 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 package com.android.wallpaper.asset; 17 18 import android.app.WallpaperManager; 19 import android.content.Context; 20 import android.os.ParcelFileDescriptor; 21 import android.os.ParcelFileDescriptor.AutoCloseInputStream; 22 import android.util.Log; 23 import android.widget.ImageView; 24 25 import com.android.wallpaper.compat.WallpaperManagerCompat; 26 import com.android.wallpaper.compat.WallpaperManagerCompat.WallpaperLocation; 27 import com.bumptech.glide.Glide; 28 import com.bumptech.glide.load.Key; 29 import com.bumptech.glide.load.resource.drawable.DrawableTransitionOptions; 30 import com.bumptech.glide.request.RequestOptions; 31 32 import java.io.InputStream; 33 import java.security.MessageDigest; 34 35 /** 36 * Asset representing the currently-set image wallpaper on N+ devices, including when daily rotation 37 * is set with a static wallpaper (but not when daily rotation uses a live wallpaper). 38 */ 39 public class CurrentWallpaperAssetVN extends StreamableAsset { 40 41 private static final String TAG = "CurrentWallpaperAssetVN"; 42 int mWallpaperId; 43 private WallpaperManager mWallpaperManager; 44 private WallpaperManagerCompat mWallpaperManagerCompat; 45 @WallpaperLocation 46 private int mWallpaperManagerFlag; 47 CurrentWallpaperAssetVN(Context context, @WallpaperLocation int wallpaperManagerFlag)48 public CurrentWallpaperAssetVN(Context context, @WallpaperLocation int wallpaperManagerFlag) { 49 mWallpaperManager = WallpaperManager.getInstance(context); 50 mWallpaperManagerCompat = WallpaperManagerCompat.getInstance(context); 51 mWallpaperManagerFlag = wallpaperManagerFlag; 52 mWallpaperId = mWallpaperManagerCompat.getWallpaperId(mWallpaperManagerFlag); 53 } 54 55 @Override openInputStream()56 protected InputStream openInputStream() { 57 ParcelFileDescriptor pfd = mWallpaperManagerCompat.getWallpaperFile(mWallpaperManagerFlag); 58 59 if (pfd == null) { 60 Log.e(TAG, "ParcelFileDescriptor for wallpaper " + mWallpaperManagerFlag + " is null, unable " 61 + "to open InputStream."); 62 return null; 63 } 64 65 return new AutoCloseInputStream(pfd); 66 } 67 68 @Override hashCode()69 public int hashCode() { 70 int result = 17; 71 result = result * 31 + mWallpaperManagerFlag; 72 result = result * 31 + mWallpaperId; 73 return result; 74 } 75 76 @Override equals(Object object)77 public boolean equals(Object object) { 78 if (object instanceof CurrentWallpaperAssetVN) { 79 CurrentWallpaperAssetVN otherAsset = (CurrentWallpaperAssetVN) object; 80 return otherAsset.mWallpaperManagerFlag == mWallpaperManagerFlag 81 && otherAsset.mWallpaperId == mWallpaperId; 82 83 } 84 return false; 85 } 86 87 @Override loadDrawable(Context context, ImageView imageView, int unusedPlaceholderColor)88 public void loadDrawable(Context context, ImageView imageView, 89 int unusedPlaceholderColor) { 90 Glide.with(context) 91 .asDrawable() 92 .load(CurrentWallpaperAssetVN.this) 93 .apply(RequestOptions.centerCropTransform()) 94 .transition(DrawableTransitionOptions.withCrossFade()) 95 .into(imageView); 96 } 97 getKey()98 public Key getKey() { 99 return new CurrentWallpaperVNKey(mWallpaperManager, mWallpaperManagerFlag); 100 } 101 getWallpaperPfd()102 ParcelFileDescriptor getWallpaperPfd() { 103 return mWallpaperManagerCompat.getWallpaperFile(mWallpaperManagerFlag); 104 } 105 106 /** 107 * Glide caching key for currently-set wallpapers on Android N or later using wallpaper IDs 108 * provided by WallpaperManager. 109 */ 110 private static final class CurrentWallpaperVNKey implements Key { 111 private WallpaperManager mWallpaperManager; 112 private int mWallpaperFlag; 113 CurrentWallpaperVNKey(WallpaperManager wallpaperManager, @WallpaperLocation int wallpaperFlag)114 public CurrentWallpaperVNKey(WallpaperManager wallpaperManager, 115 @WallpaperLocation int wallpaperFlag) { 116 mWallpaperManager = wallpaperManager; 117 mWallpaperFlag = wallpaperFlag; 118 } 119 120 @Override toString()121 public String toString() { 122 return getCacheKey(); 123 } 124 125 @Override hashCode()126 public int hashCode() { 127 return getCacheKey().hashCode(); 128 } 129 130 @Override equals(Object object)131 public boolean equals(Object object) { 132 if (object instanceof CurrentWallpaperVNKey) { 133 CurrentWallpaperVNKey otherKey = (CurrentWallpaperVNKey) object; 134 return getCacheKey().equals(otherKey.getCacheKey()); 135 136 } 137 return false; 138 } 139 140 @Override updateDiskCacheKey(MessageDigest messageDigest)141 public void updateDiskCacheKey(MessageDigest messageDigest) { 142 messageDigest.update(getCacheKey().getBytes(CHARSET)); 143 } 144 145 /** 146 * Returns an inexpensively calculated {@link String} suitable for use as a disk cache key. 147 */ getCacheKey()148 private String getCacheKey() { 149 return "CurrentWallpaperVNKey{" 150 + "flag=" + mWallpaperFlag 151 + ",id=" + mWallpaperManager.getWallpaperId(mWallpaperFlag) 152 + '}'; 153 } 154 } 155 } 156