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/*
* 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;
import com.android.launcher3.R;
import com.android.launcher3.config.FeatureFlags;
/**
* 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 and status bar separately,
// since they only consider part of the wallpaper.
Palette hotseatPalette = Palette.from(wallpaper)
.setRegion(0, (int) (wallpaper.getHeight() * (1f - HOTSEAT_FRACTION)),
wallpaper.getWidth(), wallpaper.getHeight())
.clearFilters()
.generate();
extractedColors.updateHotseatPalette(hotseatPalette);
if (FeatureFlags.LIGHT_STATUS_BAR) {
int statusBarHeight = getResources()
.getDimensionPixelSize(R.dimen.status_bar_height);
Palette statusBarPalette = Palette.from(wallpaper)
.setRegion(0, 0, wallpaper.getWidth(), statusBarHeight)
.clearFilters()
.generate();
extractedColors.updateStatusBarPalette(statusBarPalette);
}
}
// 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);
}
}
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