1 /* 2 * Copyright (C) 2015 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 androidx.appcompat.widget; 18 19 import android.content.res.ColorStateList; 20 import android.content.res.TypedArray; 21 import android.graphics.PorterDuff; 22 import android.graphics.drawable.Drawable; 23 import android.os.Build; 24 import android.util.AttributeSet; 25 import android.widget.CompoundButton; 26 27 import androidx.annotation.Nullable; 28 import androidx.appcompat.R; 29 import androidx.appcompat.content.res.AppCompatResources; 30 import androidx.core.graphics.drawable.DrawableCompat; 31 import androidx.core.widget.CompoundButtonCompat; 32 33 class AppCompatCompoundButtonHelper { 34 35 private final CompoundButton mView; 36 37 private ColorStateList mButtonTintList = null; 38 private PorterDuff.Mode mButtonTintMode = null; 39 private boolean mHasButtonTint = false; 40 private boolean mHasButtonTintMode = false; 41 42 private boolean mSkipNextApply; 43 44 /** 45 * Interface which allows us to directly set a button, bypass any calls back to ourselves. 46 */ 47 interface DirectSetButtonDrawableInterface { setButtonDrawable(Drawable buttonDrawable)48 void setButtonDrawable(Drawable buttonDrawable); 49 } 50 AppCompatCompoundButtonHelper(CompoundButton view)51 AppCompatCompoundButtonHelper(CompoundButton view) { 52 mView = view; 53 } 54 loadFromAttributes(AttributeSet attrs, int defStyleAttr)55 void loadFromAttributes(AttributeSet attrs, int defStyleAttr) { 56 TypedArray a = mView.getContext().obtainStyledAttributes(attrs, R.styleable.CompoundButton, 57 defStyleAttr, 0); 58 try { 59 if (a.hasValue(R.styleable.CompoundButton_android_button)) { 60 final int resourceId = a.getResourceId( 61 R.styleable.CompoundButton_android_button, 0); 62 if (resourceId != 0) { 63 mView.setButtonDrawable( 64 AppCompatResources.getDrawable(mView.getContext(), resourceId)); 65 } 66 } 67 if (a.hasValue(R.styleable.CompoundButton_buttonTint)) { 68 CompoundButtonCompat.setButtonTintList(mView, 69 a.getColorStateList(R.styleable.CompoundButton_buttonTint)); 70 } 71 if (a.hasValue(R.styleable.CompoundButton_buttonTintMode)) { 72 CompoundButtonCompat.setButtonTintMode(mView, 73 DrawableUtils.parseTintMode( 74 a.getInt(R.styleable.CompoundButton_buttonTintMode, -1), 75 null)); 76 } 77 } finally { 78 a.recycle(); 79 } 80 } 81 setSupportButtonTintList(ColorStateList tint)82 void setSupportButtonTintList(ColorStateList tint) { 83 mButtonTintList = tint; 84 mHasButtonTint = true; 85 86 applyButtonTint(); 87 } 88 getSupportButtonTintList()89 ColorStateList getSupportButtonTintList() { 90 return mButtonTintList; 91 } 92 setSupportButtonTintMode(@ullable PorterDuff.Mode tintMode)93 void setSupportButtonTintMode(@Nullable PorterDuff.Mode tintMode) { 94 mButtonTintMode = tintMode; 95 mHasButtonTintMode = true; 96 97 applyButtonTint(); 98 } 99 getSupportButtonTintMode()100 PorterDuff.Mode getSupportButtonTintMode() { 101 return mButtonTintMode; 102 } 103 onSetButtonDrawable()104 void onSetButtonDrawable() { 105 if (mSkipNextApply) { 106 mSkipNextApply = false; 107 return; 108 } 109 110 mSkipNextApply = true; 111 applyButtonTint(); 112 } 113 applyButtonTint()114 void applyButtonTint() { 115 Drawable buttonDrawable = CompoundButtonCompat.getButtonDrawable(mView); 116 117 if (buttonDrawable != null && (mHasButtonTint || mHasButtonTintMode)) { 118 buttonDrawable = DrawableCompat.wrap(buttonDrawable); 119 buttonDrawable = buttonDrawable.mutate(); 120 if (mHasButtonTint) { 121 DrawableCompat.setTintList(buttonDrawable, mButtonTintList); 122 } 123 if (mHasButtonTintMode) { 124 DrawableCompat.setTintMode(buttonDrawable, mButtonTintMode); 125 } 126 // The drawable (or one of its children) may not have been 127 // stateful before applying the tint, so let's try again. 128 if (buttonDrawable.isStateful()) { 129 buttonDrawable.setState(mView.getDrawableState()); 130 } 131 mView.setButtonDrawable(buttonDrawable); 132 } 133 } 134 getCompoundPaddingLeft(int superValue)135 int getCompoundPaddingLeft(int superValue) { 136 if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) { 137 // Before JB-MR1 the button drawable wasn't taken into account for padding. We'll 138 // workaround that here 139 Drawable buttonDrawable = CompoundButtonCompat.getButtonDrawable(mView); 140 if (buttonDrawable != null) { 141 superValue += buttonDrawable.getIntrinsicWidth(); 142 } 143 } 144 return superValue; 145 } 146 } 147