1/* 2 * Copyright (C) 2016 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 17package com.android.launcher3.dynamicui; 18 19import android.annotation.TargetApi; 20import android.app.WallpaperManager; 21import android.app.job.JobParameters; 22import android.app.job.JobService; 23import android.graphics.Bitmap; 24import android.graphics.BitmapFactory; 25import android.graphics.BitmapRegionDecoder; 26import android.graphics.Rect; 27import android.graphics.drawable.BitmapDrawable; 28import android.os.Build; 29import android.os.Bundle; 30import android.os.Handler; 31import android.os.HandlerThread; 32import android.os.ParcelFileDescriptor; 33import android.support.v7.graphics.Palette; 34import android.util.Log; 35 36import com.android.launcher3.LauncherProvider; 37import com.android.launcher3.LauncherSettings; 38import com.android.launcher3.R; 39import com.android.launcher3.Utilities; 40import com.android.launcher3.config.FeatureFlags; 41 42import java.io.IOException; 43 44/** 45 * Extracts colors from the wallpaper, and saves results to {@link LauncherProvider}. 46 */ 47public class ColorExtractionService extends JobService { 48 49 private static final String TAG = "ColorExtractionService"; 50 private static final boolean DEBUG = false; 51 52 /** The fraction of the wallpaper to extract colors for use on the hotseat. */ 53 private static final float HOTSEAT_FRACTION = 1f / 4; 54 55 private HandlerThread mWorkerThread; 56 private Handler mWorkerHandler; 57 58 @Override 59 public void onCreate() { 60 super.onCreate(); 61 mWorkerThread = new HandlerThread("ColorExtractionService"); 62 mWorkerThread.start(); 63 mWorkerHandler = new Handler(mWorkerThread.getLooper()); 64 } 65 66 @Override 67 public void onDestroy() { 68 super.onDestroy(); 69 mWorkerThread.quit(); 70 } 71 72 @Override 73 public boolean onStartJob(final JobParameters jobParameters) { 74 if (DEBUG) Log.d(TAG, "onStartJob"); 75 mWorkerHandler.post(new Runnable() { 76 @Override 77 public void run() { 78 WallpaperManager wallpaperManager = WallpaperManager.getInstance( 79 ColorExtractionService.this); 80 int wallpaperId = ExtractionUtils.getWallpaperId(wallpaperManager); 81 82 ExtractedColors extractedColors = new ExtractedColors(); 83 if (wallpaperManager.getWallpaperInfo() != null) { 84 // We can't extract colors from live wallpapers; always use the default color. 85 extractedColors.updateHotseatPalette(null); 86 87 if (FeatureFlags.QSB_IN_HOTSEAT || FeatureFlags.LAUNCHER3_GRADIENT_ALL_APPS) { 88 extractedColors.updateWallpaperThemePalette(null); 89 } 90 } else { 91 // We extract colors for the hotseat and status bar separately, 92 // since they only consider part of the wallpaper. 93 extractedColors.updateHotseatPalette(getHotseatPalette()); 94 95 if (FeatureFlags.LIGHT_STATUS_BAR) { 96 extractedColors.updateStatusBarPalette(getStatusBarPalette()); 97 } 98 99 if (FeatureFlags.QSB_IN_HOTSEAT || FeatureFlags.LAUNCHER3_GRADIENT_ALL_APPS) { 100 extractedColors.updateWallpaperThemePalette(getWallpaperPalette()); 101 } 102 } 103 104 // Save the extracted colors and wallpaper id to LauncherProvider. 105 String colorsString = extractedColors.encodeAsString(); 106 Bundle extras = new Bundle(); 107 extras.putInt(LauncherSettings.Settings.EXTRA_WALLPAPER_ID, wallpaperId); 108 extras.putString(LauncherSettings.Settings.EXTRA_EXTRACTED_COLORS, colorsString); 109 getContentResolver().call( 110 LauncherSettings.Settings.CONTENT_URI, 111 LauncherSettings.Settings.METHOD_SET_EXTRACTED_COLORS_AND_WALLPAPER_ID, 112 null, extras); 113 jobFinished(jobParameters, false /* needsReschedule */); 114 if (DEBUG) Log.d(TAG, "job finished!"); 115 } 116 }); 117 return true; 118 } 119 120 @Override 121 public boolean onStopJob(JobParameters jobParameters) { 122 if (DEBUG) Log.d(TAG, "onStopJob"); 123 mWorkerHandler.removeCallbacksAndMessages(null); 124 return true; 125 } 126 127 @TargetApi(Build.VERSION_CODES.N) 128 private Palette getHotseatPalette() { 129 WallpaperManager wallpaperManager = WallpaperManager.getInstance(this); 130 if (Utilities.ATLEAST_NOUGAT) { 131 try (ParcelFileDescriptor fd = wallpaperManager 132 .getWallpaperFile(WallpaperManager.FLAG_SYSTEM)) { 133 BitmapRegionDecoder decoder = BitmapRegionDecoder 134 .newInstance(fd.getFileDescriptor(), false); 135 int height = decoder.getHeight(); 136 Rect decodeRegion = new Rect(0, (int) (height * (1f - HOTSEAT_FRACTION)), 137 decoder.getWidth(), height); 138 Bitmap bitmap = decoder.decodeRegion(decodeRegion, null); 139 decoder.recycle(); 140 if (bitmap != null) { 141 return Palette.from(bitmap).clearFilters().generate(); 142 } 143 } catch (IOException | NullPointerException e) { 144 Log.e(TAG, "Fetching partial bitmap failed, trying old method", e); 145 } 146 } 147 148 Bitmap wallpaper = ((BitmapDrawable) wallpaperManager.getDrawable()).getBitmap(); 149 return Palette.from(wallpaper) 150 .setRegion(0, (int) (wallpaper.getHeight() * (1f - HOTSEAT_FRACTION)), 151 wallpaper.getWidth(), wallpaper.getHeight()) 152 .clearFilters() 153 .generate(); 154 } 155 156 @TargetApi(Build.VERSION_CODES.N) 157 private Palette getStatusBarPalette() { 158 WallpaperManager wallpaperManager = WallpaperManager.getInstance(this); 159 int statusBarHeight = getResources() 160 .getDimensionPixelSize(R.dimen.status_bar_height); 161 162 if (Utilities.ATLEAST_NOUGAT) { 163 try (ParcelFileDescriptor fd = wallpaperManager 164 .getWallpaperFile(WallpaperManager.FLAG_SYSTEM)) { 165 BitmapRegionDecoder decoder = BitmapRegionDecoder 166 .newInstance(fd.getFileDescriptor(), false); 167 Rect decodeRegion = new Rect(0, 0, 168 decoder.getWidth(), statusBarHeight); 169 Bitmap bitmap = decoder.decodeRegion(decodeRegion, null); 170 decoder.recycle(); 171 if (bitmap != null) { 172 return Palette.from(bitmap).clearFilters().generate(); 173 } 174 } catch (IOException | NullPointerException e) { 175 Log.e(TAG, "Fetching partial bitmap failed, trying old method", e); 176 } 177 } 178 179 Bitmap wallpaper = ((BitmapDrawable) wallpaperManager.getDrawable()).getBitmap(); 180 return Palette.from(wallpaper) 181 .setRegion(0, 0, wallpaper.getWidth(), statusBarHeight) 182 .clearFilters() 183 .generate(); 184 } 185 186 @TargetApi(Build.VERSION_CODES.N) 187 private Palette getWallpaperPalette() { 188 WallpaperManager wallpaperManager = WallpaperManager.getInstance(this); 189 if (Utilities.ATLEAST_NOUGAT) { 190 try (ParcelFileDescriptor fd = wallpaperManager 191 .getWallpaperFile(WallpaperManager.FLAG_SYSTEM)) { 192 Bitmap bitmap = BitmapFactory.decodeFileDescriptor(fd.getFileDescriptor()); 193 if (bitmap != null) { 194 return Palette.from(bitmap).clearFilters().generate(); 195 } 196 } catch (IOException | NullPointerException e) { 197 Log.e(TAG, "Fetching partial bitmap failed, trying old method", e); 198 } 199 } 200 201 Bitmap wallpaper = ((BitmapDrawable) wallpaperManager.getDrawable()).getBitmap(); 202 return Palette.from(wallpaper).clearFilters().generate(); 203 } 204} 205