| /* |
| * Copyright (C) 2016 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.launcher3.dynamicui; |
| |
| import android.app.IntentService; |
| import android.app.WallpaperManager; |
| import android.content.Intent; |
| import android.graphics.Bitmap; |
| import android.graphics.drawable.BitmapDrawable; |
| import android.os.Bundle; |
| import android.support.v7.graphics.Palette; |
| |
| import com.android.launcher3.LauncherProvider; |
| import com.android.launcher3.LauncherSettings; |
| |
| /** |
| * Extracts colors from the wallpaper, and saves results to {@link LauncherProvider}. |
| */ |
| public class ColorExtractionService extends IntentService { |
| |
| /** The fraction of the wallpaper to extract colors for use on the hotseat. */ |
| private static final float HOTSEAT_FRACTION = 1f / 4; |
| |
| public ColorExtractionService() { |
| super("ColorExtractionService"); |
| } |
| |
| @Override |
| protected void onHandleIntent(Intent intent) { |
| WallpaperManager wallpaperManager = WallpaperManager.getInstance(this); |
| int wallpaperId = ExtractionUtils.getWallpaperId(wallpaperManager); |
| ExtractedColors extractedColors = new ExtractedColors(); |
| if (wallpaperManager.getWallpaperInfo() != null) { |
| // We can't extract colors from live wallpapers, so just use the default color always. |
| extractedColors.updatePalette(null); |
| extractedColors.updateHotseatPalette(null); |
| } else { |
| Bitmap wallpaper = ((BitmapDrawable) wallpaperManager.getDrawable()).getBitmap(); |
| Palette palette = Palette.from(wallpaper).generate(); |
| extractedColors.updatePalette(palette); |
| // We extract colors for the hotseat separately, |
| // since it only considers the lower part of the wallpaper. |
| // TODO(twickham): update Palette library to 23.3.1 or higher, |
| // which fixes a bug with using regions (b/28349435). |
| Palette hotseatPalette = Palette.from(wallpaper) |
| .setRegion(0, (int) (wallpaper.getHeight() * (1f - HOTSEAT_FRACTION)), |
| wallpaper.getWidth(), wallpaper.getHeight()) |
| .clearFilters() |
| .generate(); |
| extractedColors.updateHotseatPalette(hotseatPalette); |
| } |
| |
| // Save the extracted colors and wallpaper id to LauncherProvider. |
| String colorsString = extractedColors.encodeAsString(); |
| Bundle extras = new Bundle(); |
| extras.putInt(LauncherSettings.Settings.EXTRA_WALLPAPER_ID, wallpaperId); |
| extras.putString(LauncherSettings.Settings.EXTRA_EXTRACTED_COLORS, colorsString); |
| getContentResolver().call( |
| LauncherSettings.Settings.CONTENT_URI, |
| LauncherSettings.Settings.METHOD_SET_EXTRACTED_COLORS_AND_WALLPAPER_ID, |
| null, extras); |
| } |
| } |