| /* |
| * Copyright (C) 2023 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server.wallpaper; |
| |
| import android.os.Environment; |
| |
| import java.io.File; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| class WallpaperUtils { |
| |
| static final String WALLPAPER = "wallpaper_orig"; |
| static final String WALLPAPER_CROP = "wallpaper"; |
| static final String WALLPAPER_LOCK_ORIG = "wallpaper_lock_orig"; |
| static final String WALLPAPER_LOCK_CROP = "wallpaper_lock"; |
| static final String WALLPAPER_INFO = "wallpaper_info.xml"; |
| static final String RECORD_FILE = "decode_record"; |
| static final String RECORD_LOCK_FILE = "decode_lock_record"; |
| |
| // All the various per-user state files we need to be aware of |
| private static final String[] sPerUserFiles = new String[] { |
| WALLPAPER, WALLPAPER_CROP, |
| WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP, |
| WALLPAPER_INFO |
| }; |
| |
| /** |
| * ID of the current wallpaper, incremented every time anything sets a wallpaper. |
| * This is used for external detection of wallpaper update activity. |
| */ |
| private static int sWallpaperId; |
| |
| static File getWallpaperDir(int userId) { |
| return Environment.getUserSystemDirectory(userId); |
| } |
| |
| /** |
| * generate a new wallpaper id |
| * should be called with the {@link WallpaperManagerService} lock held |
| */ |
| static int makeWallpaperIdLocked() { |
| do { |
| ++sWallpaperId; |
| } while (sWallpaperId == 0); |
| return sWallpaperId; |
| } |
| |
| /** |
| * returns the id of the current wallpaper (the last one that has been set) |
| */ |
| static int getCurrentWallpaperId() { |
| return sWallpaperId; |
| } |
| |
| /** |
| * sets the id of the current wallpaper |
| * used when a wallpaper with higher id than current is loaded from settings |
| */ |
| static void setCurrentWallpaperId(int id) { |
| sWallpaperId = id; |
| } |
| |
| static List<File> getWallpaperFiles(int userId) { |
| File wallpaperDir = getWallpaperDir(userId); |
| List<File> result = new ArrayList<File>(); |
| for (int i = 0; i < sPerUserFiles.length; i++) { |
| result.add(new File(wallpaperDir, sPerUserFiles[i])); |
| } |
| return result; |
| } |
| } |