| /* |
| * Copyright (C) 2020 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.wallpaper.widget; |
| |
| import android.app.WallpaperColors; |
| import android.content.Context; |
| import android.graphics.Bitmap; |
| import android.graphics.Point; |
| import android.util.Log; |
| import android.util.LruCache; |
| import android.view.Display; |
| import android.view.WindowManager; |
| |
| import androidx.annotation.NonNull; |
| import androidx.annotation.Nullable; |
| |
| import com.android.wallpaper.asset.Asset; |
| import com.android.wallpaper.asset.BitmapCachingAsset; |
| import com.android.wallpaper.util.ScreenSizeCalculator; |
| |
| /** A class to load the {@link WallpaperColors} from wallpaper {@link Asset}. */ |
| public class WallpaperColorsLoader { |
| private static final String TAG = "WallpaperColorsLoader"; |
| |
| /** Callback of loading a {@link WallpaperColors}. */ |
| public interface Callback { |
| /** Gets called when a {@link WallpaperColors} is loaded. */ |
| void onLoaded(@Nullable WallpaperColors colors); |
| } |
| |
| // The max size should be at least 2 for storing home and lockscreen wallpaper if they are |
| // different. |
| private static LruCache<Asset, WallpaperColors> sCache = new LruCache<>(/* maxSize= */ 6); |
| |
| /** Gets the {@link WallpaperColors} from the wallpaper {@link Asset}. */ |
| public static void getWallpaperColors(Context context, @NonNull Asset asset, |
| @NonNull Callback callback) { |
| WallpaperColors cached = sCache.get(asset); |
| if (cached != null) { |
| callback.onLoaded(cached); |
| return; |
| } |
| |
| Display display = context.getSystemService(WindowManager.class).getDefaultDisplay(); |
| Point screen = ScreenSizeCalculator.getInstance().getScreenSize(display); |
| new BitmapCachingAsset(context, asset).decodeBitmap(screen.y / 2, screen.x / 2, bitmap -> { |
| if (bitmap != null) { |
| boolean shouldRecycle = false; |
| if (bitmap.getConfig() == Bitmap.Config.HARDWARE) { |
| bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, false); |
| shouldRecycle = true; |
| } |
| WallpaperColors colors = WallpaperColors.fromBitmap(bitmap); |
| sCache.put(asset, colors); |
| callback.onLoaded(colors); |
| if (shouldRecycle) { |
| bitmap.recycle(); |
| } |
| } else { |
| Log.i(TAG, "Can't get wallpaper colors from a null bitmap, uses null color."); |
| callback.onLoaded(null); |
| } |
| }); |
| } |
| } |