1 /* 2 * Copyright (C) 2017 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 17 package com.android.internal.colorextraction.types; 18 19 import android.app.WallpaperColors; 20 21 import com.android.internal.colorextraction.ColorExtractor; 22 23 /** 24 * Interface to allow various color extraction implementations. 25 */ 26 public interface ExtractionType { 27 28 /** 29 * Executes color extraction by reading WallpaperColors and setting 30 * main and secondary colors on GradientColors. 31 * 32 * Extraction is expected to happen with 3 different gradient types: 33 * Normal, with the main extracted colors 34 * Dark, with extra contrast 35 * ExtraDark, for places where GAR is mandatory, like the emergency dialer 36 * 37 * @param inWallpaperColors where to read from 38 * @param outGradientColorsNormal object that should receive normal colors 39 * @param outGradientColorsDark object that should receive dark colors 40 * @param outGradientColorsExtraDark object that should receive extra dark colors 41 */ extractInto(WallpaperColors inWallpaperColors, ColorExtractor.GradientColors outGradientColorsNormal, ColorExtractor.GradientColors outGradientColorsDark, ColorExtractor.GradientColors outGradientColorsExtraDark)42 void extractInto(WallpaperColors inWallpaperColors, 43 ColorExtractor.GradientColors outGradientColorsNormal, 44 ColorExtractor.GradientColors outGradientColorsDark, 45 ColorExtractor.GradientColors outGradientColorsExtraDark); 46 } 47