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 17 package android.content.res; 18 19 import android.annotation.ColorInt; 20 import android.content.res.Resources.Theme; 21 import android.graphics.Color; 22 23 /** 24 * Defines an abstract class for the complex color information, like 25 * {@link android.content.res.ColorStateList} or {@link android.content.res.GradientColor} 26 * @hide 27 */ 28 public abstract class ComplexColor { 29 private int mChangingConfigurations; 30 31 /** 32 * @return {@code true} if this ComplexColor changes color based on state, {@code false} 33 * otherwise. 34 */ isStateful()35 public boolean isStateful() { return false; } 36 37 /** 38 * @return the default color. 39 */ 40 @ColorInt getDefaultColor()41 public abstract int getDefaultColor(); 42 43 /** 44 * @hide only for resource preloading 45 * 46 */ getConstantState()47 public abstract ConstantState<ComplexColor> getConstantState(); 48 49 /** 50 * @hide only for resource preloading 51 */ canApplyTheme()52 public abstract boolean canApplyTheme(); 53 54 /** 55 * @hide only for resource preloading 56 */ obtainForTheme(Theme t)57 public abstract ComplexColor obtainForTheme(Theme t); 58 59 /** 60 * @hide only for resource preloading 61 */ setBaseChangingConfigurations(int changingConfigurations)62 final void setBaseChangingConfigurations(int changingConfigurations) { 63 mChangingConfigurations = changingConfigurations; 64 } 65 66 /** 67 * Returns a mask of the configuration parameters for which this color 68 * may change, requiring that it be re-created. 69 * 70 * @return a mask of the changing configuration parameters, as defined by 71 * {@link android.content.pm.ActivityInfo} 72 * 73 * @see android.content.pm.ActivityInfo 74 */ getChangingConfigurations()75 public int getChangingConfigurations() { 76 return mChangingConfigurations; 77 } 78 } 79