| /* |
| * 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.content.Context; |
| import android.graphics.Color; |
| import android.support.v4.graphics.ColorUtils; |
| import android.support.v7.graphics.Palette; |
| import android.util.Log; |
| |
| import com.android.launcher3.Utilities; |
| |
| /** |
| * Saves and loads colors extracted from the wallpaper, as well as the associated wallpaper id. |
| */ |
| public class ExtractedColors { |
| private static final String TAG = "ExtractedColors"; |
| |
| public static final int DEFAULT_LIGHT = Color.WHITE; |
| public static final int DEFAULT_DARK = Color.BLACK; |
| public static final int DEFAULT_COLOR = DEFAULT_LIGHT; |
| |
| // These color profile indices should NOT be changed, since they are used when saving and |
| // loading extracted colors. New colors should always be added at the end. |
| public static final int VERSION_INDEX = 0; |
| public static final int HOTSEAT_INDEX = 1; |
| public static final int STATUS_BAR_INDEX = 2; |
| // public static final int VIBRANT_INDEX = 2; |
| // public static final int VIBRANT_DARK_INDEX = 3; |
| // public static final int VIBRANT_LIGHT_INDEX = 4; |
| // public static final int MUTED_INDEX = 5; |
| // public static final int MUTED_DARK_INDEX = 6; |
| // public static final int MUTED_LIGHT_INDEX = 7; |
| |
| public static final int NUM_COLOR_PROFILES = 2; |
| private static final int VERSION = 1; |
| |
| private static final String COLOR_SEPARATOR = ","; |
| |
| private int[] mColors; |
| |
| public ExtractedColors() { |
| // The first entry is reserved for the version number. |
| mColors = new int[NUM_COLOR_PROFILES + 1]; |
| mColors[VERSION_INDEX] = VERSION; |
| } |
| |
| public void setColorAtIndex(int index, int color) { |
| if (index > VERSION_INDEX && index < mColors.length) { |
| mColors[index] = color; |
| } else { |
| Log.e(TAG, "Attempted to set a color at an invalid index " + index); |
| } |
| } |
| |
| /** |
| * Encodes {@link #mColors} as a comma-separated String. |
| */ |
| String encodeAsString() { |
| StringBuilder colorsStringBuilder = new StringBuilder(); |
| for (int color : mColors) { |
| colorsStringBuilder.append(color).append(COLOR_SEPARATOR); |
| } |
| return colorsStringBuilder.toString(); |
| } |
| |
| /** |
| * Decodes a comma-separated String into {@link #mColors}. |
| */ |
| void decodeFromString(String colorsString) { |
| String[] splitColorsString = colorsString.split(COLOR_SEPARATOR); |
| mColors = new int[splitColorsString.length]; |
| for (int i = 0; i < mColors.length; i++) { |
| mColors[i] = Integer.parseInt(splitColorsString[i]); |
| } |
| } |
| |
| /** |
| * Loads colors and wallpaper id from {@link Utilities#getPrefs(Context)}. |
| * These were saved there in {@link ColorExtractionService}. |
| */ |
| public void load(Context context) { |
| String encodedString = Utilities.getPrefs(context).getString( |
| ExtractionUtils.EXTRACTED_COLORS_PREFERENCE_KEY, VERSION + ""); |
| |
| decodeFromString(encodedString); |
| |
| if (mColors[VERSION_INDEX] != VERSION) { |
| ExtractionUtils.startColorExtractionService(context); |
| } |
| } |
| |
| /** @param index must be one of the index values defined at the top of this class. */ |
| public int getColor(int index, int defaultColor) { |
| if (index > VERSION_INDEX && index < mColors.length) { |
| return mColors[index]; |
| } |
| return defaultColor; |
| } |
| |
| /** |
| * Updates colors based on the palette. |
| * If the palette is null, the default color is used in all cases. |
| */ |
| public void updatePalette(Palette palette) { |
| if (palette == null) { |
| for (int i = 0; i < NUM_COLOR_PROFILES; i++) { |
| setColorAtIndex(i, ExtractedColors.DEFAULT_COLOR); |
| } |
| } else { |
| // We currently don't use any of the colors defined by the Palette API, |
| // but this is how we would add them if we ever need them. |
| |
| // setColorAtIndex(ExtractedColors.VIBRANT_INDEX, |
| // palette.getVibrantColor(ExtractedColors.DEFAULT_COLOR)); |
| // setColorAtIndex(ExtractedColors.VIBRANT_DARK_INDEX, |
| // palette.getDarkVibrantColor(ExtractedColors.DEFAULT_DARK)); |
| // setColorAtIndex(ExtractedColors.VIBRANT_LIGHT_INDEX, |
| // palette.getLightVibrantColor(ExtractedColors.DEFAULT_LIGHT)); |
| // setColorAtIndex(ExtractedColors.MUTED_INDEX, |
| // palette.getMutedColor(DEFAULT_COLOR)); |
| // setColorAtIndex(ExtractedColors.MUTED_DARK_INDEX, |
| // palette.getDarkMutedColor(ExtractedColors.DEFAULT_DARK)); |
| // setColorAtIndex(ExtractedColors.MUTED_LIGHT_INDEX, |
| // palette.getLightVibrantColor(ExtractedColors.DEFAULT_LIGHT)); |
| } |
| } |
| |
| /** |
| * The hotseat's color is defined as follows: |
| * - 12% black for super light wallpaper |
| * - 18% white for super dark |
| * - 25% white otherwise |
| */ |
| public void updateHotseatPalette(Palette hotseatPalette) { |
| int hotseatColor; |
| if (hotseatPalette != null && ExtractionUtils.isSuperLight(hotseatPalette)) { |
| hotseatColor = ColorUtils.setAlphaComponent(Color.BLACK, (int) (0.12f * 255)); |
| } else if (hotseatPalette != null && ExtractionUtils.isSuperDark(hotseatPalette)) { |
| hotseatColor = ColorUtils.setAlphaComponent(Color.WHITE, (int) (0.18f * 255)); |
| } else { |
| hotseatColor = ColorUtils.setAlphaComponent(Color.WHITE, (int) (0.25f * 255)); |
| } |
| setColorAtIndex(HOTSEAT_INDEX, hotseatColor); |
| } |
| |
| public void updateStatusBarPalette(Palette statusBarPalette) { |
| setColorAtIndex(STATUS_BAR_INDEX, ExtractionUtils.isSuperLight(statusBarPalette) ? |
| DEFAULT_LIGHT : DEFAULT_DARK); |
| } |
| } |