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 android.support.v7.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.support.v4.view.ViewCompat; 24 import android.support.v7.appcompat.R; 25 import android.support.v7.graphics.drawable.DrawableUtils; 26 import android.support.v7.internal.widget.TintInfo; 27 import android.support.v7.internal.widget.TintManager; 28 import android.util.AttributeSet; 29 import android.view.View; 30 31 class AppCompatBackgroundHelper { 32 33 private final View mView; 34 private final TintManager mTintManager; 35 36 private TintInfo mInternalBackgroundTint; 37 private TintInfo mBackgroundTint; 38 AppCompatBackgroundHelper(View view, TintManager tintManager)39 AppCompatBackgroundHelper(View view, TintManager tintManager) { 40 mView = view; 41 mTintManager = tintManager; 42 } 43 loadFromAttributes(AttributeSet attrs, int defStyleAttr)44 void loadFromAttributes(AttributeSet attrs, int defStyleAttr) { 45 TypedArray a = mView.getContext().obtainStyledAttributes(attrs, 46 R.styleable.ViewBackgroundHelper, defStyleAttr, 0); 47 try { 48 if (a.hasValue(R.styleable.ViewBackgroundHelper_android_background)) { 49 ColorStateList tint = mTintManager.getTintList( 50 a.getResourceId(R.styleable.ViewBackgroundHelper_android_background, -1)); 51 if (tint != null) { 52 setInternalBackgroundTint(tint); 53 } 54 } 55 if (a.hasValue(R.styleable.ViewBackgroundHelper_backgroundTint)) { 56 ViewCompat.setBackgroundTintList(mView, 57 a.getColorStateList(R.styleable.ViewBackgroundHelper_backgroundTint)); 58 } 59 if (a.hasValue(R.styleable.ViewBackgroundHelper_backgroundTintMode)) { 60 ViewCompat.setBackgroundTintMode(mView, 61 DrawableUtils.parseTintMode( 62 a.getInt(R.styleable.ViewBackgroundHelper_backgroundTintMode, -1), 63 null)); 64 } 65 } finally { 66 a.recycle(); 67 } 68 } 69 onSetBackgroundResource(int resId)70 void onSetBackgroundResource(int resId) { 71 // Update the default background tint 72 setInternalBackgroundTint(mTintManager != null ? mTintManager.getTintList(resId) : null); 73 } 74 onSetBackgroundDrawable(Drawable background)75 void onSetBackgroundDrawable(Drawable background) { 76 // We don't know that this drawable is, so we need to clear the default background tint 77 setInternalBackgroundTint(null); 78 } 79 setSupportBackgroundTintList(ColorStateList tint)80 void setSupportBackgroundTintList(ColorStateList tint) { 81 if (mBackgroundTint == null) { 82 mBackgroundTint = new TintInfo(); 83 } 84 mBackgroundTint.mTintList = tint; 85 mBackgroundTint.mHasTintList = true; 86 87 applySupportBackgroundTint(); 88 } 89 getSupportBackgroundTintList()90 ColorStateList getSupportBackgroundTintList() { 91 return mBackgroundTint != null ? mBackgroundTint.mTintList : null; 92 } 93 setSupportBackgroundTintMode(PorterDuff.Mode tintMode)94 void setSupportBackgroundTintMode(PorterDuff.Mode tintMode) { 95 if (mBackgroundTint == null) { 96 mBackgroundTint = new TintInfo(); 97 } 98 mBackgroundTint.mTintMode = tintMode; 99 mBackgroundTint.mHasTintMode = true; 100 101 applySupportBackgroundTint(); 102 } 103 getSupportBackgroundTintMode()104 PorterDuff.Mode getSupportBackgroundTintMode() { 105 return mBackgroundTint != null ? mBackgroundTint.mTintMode : null; 106 } 107 applySupportBackgroundTint()108 void applySupportBackgroundTint() { 109 if (mView.getBackground() != null) { 110 if (mBackgroundTint != null) { 111 TintManager.tintViewBackground(mView, mBackgroundTint); 112 } else if (mInternalBackgroundTint != null) { 113 TintManager.tintViewBackground(mView, mInternalBackgroundTint); 114 } 115 } 116 } 117 setInternalBackgroundTint(ColorStateList tint)118 void setInternalBackgroundTint(ColorStateList tint) { 119 if (tint != null) { 120 if (mInternalBackgroundTint == null) { 121 mInternalBackgroundTint = new TintInfo(); 122 } 123 mInternalBackgroundTint.mTintList = tint; 124 mInternalBackgroundTint.mHasTintList = true; 125 } else { 126 mInternalBackgroundTint = null; 127 } 128 applySupportBackgroundTint(); 129 } 130 } 131