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.graphics.Point; 21 import android.graphics.Rect; 22 import android.os.ParcelFileDescriptor; 23 import android.os.ParcelFileDescriptor.AutoCloseInputStream; 24 import android.util.Log; 25 import android.widget.ImageView; 26 27 import com.android.wallpaper.compat.WallpaperManagerCompat; 28 import com.android.wallpaper.compat.WallpaperManagerCompat.WallpaperLocation; 29 import com.android.wallpaper.util.WallpaperCropUtils; 30 31 import com.bumptech.glide.Glide; 32 import com.bumptech.glide.load.Key; 33 import com.bumptech.glide.load.resource.drawable.DrawableTransitionOptions; 34 import com.bumptech.glide.request.RequestOptions; 35 36 import java.io.InputStream; 37 import java.security.MessageDigest; 38 39 /** 40 * Asset representing the currently-set image wallpaper on N+ devices, including when daily rotation 41 * is set with a static wallpaper (but not when daily rotation uses a live wallpaper). 42 */ 43 public class CurrentWallpaperAssetVN extends StreamableAsset { 44 45 private static final String TAG = "CurrentWallpaperAssetVN"; 46 int mWallpaperId; 47 private WallpaperManager mWallpaperManager; 48 private WallpaperManagerCompat mWallpaperManagerCompat; 49 @WallpaperLocation 50 private int mWallpaperManagerFlag; 51 CurrentWallpaperAssetVN(Context context, @WallpaperLocation int wallpaperManagerFlag)52 public CurrentWallpaperAssetVN(Context context, @WallpaperLocation int wallpaperManagerFlag) { 53 mWallpaperManager = WallpaperManager.getInstance(context); 54 mWallpaperManagerCompat = WallpaperManagerCompat.getInstance(context); 55 mWallpaperManagerFlag = wallpaperManagerFlag; 56 mWallpaperId = mWallpaperManagerCompat.getWallpaperId(mWallpaperManagerFlag); 57 } 58 59 @Override openInputStream()60 protected InputStream openInputStream() { 61 ParcelFileDescriptor pfd = mWallpaperManagerCompat.getWallpaperFile(mWallpaperManagerFlag); 62 63 if (pfd == null) { 64 Log.e(TAG, "ParcelFileDescriptor for wallpaper " + mWallpaperManagerFlag + " is null, unable " 65 + "to open InputStream."); 66 return null; 67 } 68 69 return new AutoCloseInputStream(pfd); 70 } 71 72 @Override hashCode()73 public int hashCode() { 74 int result = 17; 75 result = result * 31 + mWallpaperManagerFlag; 76 result = result * 31 + mWallpaperId; 77 return result; 78 } 79 80 @Override equals(Object object)81 public boolean equals(Object object) { 82 if (object instanceof CurrentWallpaperAssetVN) { 83 CurrentWallpaperAssetVN otherAsset = (CurrentWallpaperAssetVN) object; 84 return otherAsset.mWallpaperManagerFlag == mWallpaperManagerFlag 85 && otherAsset.mWallpaperId == mWallpaperId; 86 87 } 88 return false; 89 } 90 91 @Override loadDrawable(Context context, ImageView imageView, int unusedPlaceholderColor)92 public void loadDrawable(Context context, ImageView imageView, 93 int unusedPlaceholderColor) { 94 Glide.with(context) 95 .asDrawable() 96 .load(CurrentWallpaperAssetVN.this) 97 .apply(RequestOptions.centerCropTransform()) 98 .transition(DrawableTransitionOptions.withCrossFade()) 99 .into(imageView); 100 } 101 102 @Override adjustCropRect(Context context, Point assetDimensions, Rect cropRect)103 protected void adjustCropRect(Context context, Point assetDimensions, Rect cropRect) { 104 cropRect.offsetTo(0, 0); 105 WallpaperCropUtils.adjustCurrentWallpaperCropRect(context, assetDimensions, cropRect); 106 } 107 getKey()108 public Key getKey() { 109 return new CurrentWallpaperVNKey(mWallpaperManager, mWallpaperManagerFlag); 110 } 111 getWallpaperPfd()112 ParcelFileDescriptor getWallpaperPfd() { 113 return mWallpaperManagerCompat.getWallpaperFile(mWallpaperManagerFlag); 114 } 115 116 /** 117 * Glide caching key for currently-set wallpapers on Android N or later using wallpaper IDs 118 * provided by WallpaperManager. 119 */ 120 private static final class CurrentWallpaperVNKey implements Key { 121 private WallpaperManager mWallpaperManager; 122 private int mWallpaperFlag; 123 CurrentWallpaperVNKey(WallpaperManager wallpaperManager, @WallpaperLocation int wallpaperFlag)124 public CurrentWallpaperVNKey(WallpaperManager wallpaperManager, 125 @WallpaperLocation int wallpaperFlag) { 126 mWallpaperManager = wallpaperManager; 127 mWallpaperFlag = wallpaperFlag; 128 } 129 130 @Override toString()131 public String toString() { 132 return getCacheKey(); 133 } 134 135 @Override hashCode()136 public int hashCode() { 137 return getCacheKey().hashCode(); 138 } 139 140 @Override equals(Object object)141 public boolean equals(Object object) { 142 if (object instanceof CurrentWallpaperVNKey) { 143 CurrentWallpaperVNKey otherKey = (CurrentWallpaperVNKey) object; 144 return getCacheKey().equals(otherKey.getCacheKey()); 145 146 } 147 return false; 148 } 149 150 @Override updateDiskCacheKey(MessageDigest messageDigest)151 public void updateDiskCacheKey(MessageDigest messageDigest) { 152 messageDigest.update(getCacheKey().getBytes(CHARSET)); 153 } 154 155 /** 156 * Returns an inexpensively calculated {@link String} suitable for use as a disk cache key. 157 */ getCacheKey()158 private String getCacheKey() { 159 return "CurrentWallpaperVNKey{" 160 + "flag=" + mWallpaperFlag 161 + ",id=" + mWallpaperManager.getWallpaperId(mWallpaperFlag) 162 + '}'; 163 } 164 } 165 } 166