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/*
* Copyright (C) 2015 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.setupwizardlib.view;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.ColorStateList;
import android.graphics.PorterDuff;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.os.Build;
import androidx.annotation.NonNull;
import android.util.AttributeSet;
import android.widget.Button;
/**
* Button for navigation bar, which includes tinting of its compound drawables to be used for dark
* and light themes.
*/
@SuppressLint("AppCompatCustomView")
public class NavigationBarButton extends Button {
public NavigationBarButton(Context context) {
super(context);
init();
}
public NavigationBarButton(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
private void init() {
// Unfortunately, drawableStart and drawableEnd set through XML does not call the setter,
// so manually getting it and wrapping it in the compat drawable.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
Drawable[] drawables = getCompoundDrawablesRelative();
for (int i = 0; i < drawables.length; i++) {
if (drawables[i] != null) {
drawables[i] = TintedDrawable.wrap(drawables[i]);
}
}
setCompoundDrawablesRelativeWithIntrinsicBounds(
drawables[0], drawables[1], drawables[2], drawables[3]);
}
}
@Override
public void setCompoundDrawables(Drawable left, Drawable top, Drawable right, Drawable bottom) {
if (left != null) {
left = TintedDrawable.wrap(left);
}
if (top != null) {
top = TintedDrawable.wrap(top);
}
if (right != null) {
right = TintedDrawable.wrap(right);
}
if (bottom != null) {
bottom = TintedDrawable.wrap(bottom);
}
super.setCompoundDrawables(left, top, right, bottom);
tintDrawables();
}
@Override
public void setCompoundDrawablesRelative(
Drawable start, Drawable top, Drawable end, Drawable bottom) {
if (start != null) {
start = TintedDrawable.wrap(start);
}
if (top != null) {
top = TintedDrawable.wrap(top);
}
if (end != null) {
end = TintedDrawable.wrap(end);
}
if (bottom != null) {
bottom = TintedDrawable.wrap(bottom);
}
super.setCompoundDrawablesRelative(start, top, end, bottom);
tintDrawables();
}
@Override
public void setTextColor(ColorStateList colors) {
super.setTextColor(colors);
tintDrawables();
}
private void tintDrawables() {
final ColorStateList textColors = getTextColors();
if (textColors != null) {
for (Drawable drawable : getAllCompoundDrawables()) {
if (drawable instanceof TintedDrawable) {
((TintedDrawable) drawable).setTintListCompat(textColors);
}
}
invalidate();
}
}
private Drawable[] getAllCompoundDrawables() {
Drawable[] drawables = new Drawable[6];
Drawable[] compoundDrawables = getCompoundDrawables();
drawables[0] = compoundDrawables[0]; // left
drawables[1] = compoundDrawables[1]; // top
drawables[2] = compoundDrawables[2]; // right
drawables[3] = compoundDrawables[3]; // bottom
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
Drawable[] compoundDrawablesRelative = getCompoundDrawablesRelative();
drawables[4] = compoundDrawablesRelative[0]; // start
drawables[5] = compoundDrawablesRelative[2]; // end
}
return drawables;
}
// TODO: Remove this class and use DrawableCompat.wrap() once we can use support library 22.1.0
// or above
private static class TintedDrawable extends LayerDrawable {
public static TintedDrawable wrap(Drawable drawable) {
if (drawable instanceof TintedDrawable) {
return (TintedDrawable) drawable;
}
return new TintedDrawable(drawable.mutate());
}
private ColorStateList tintList = null;
TintedDrawable(Drawable wrapped) {
super(new Drawable[] {wrapped});
}
@Override
public boolean isStateful() {
return true;
}
@Override
public boolean setState(@NonNull int[] stateSet) {
boolean needsInvalidate = super.setState(stateSet);
boolean needsInvalidateForState = updateState();
return needsInvalidate || needsInvalidateForState;
}
public void setTintListCompat(ColorStateList colors) {
tintList = colors;
if (updateState()) {
invalidateSelf();
}
}
private boolean updateState() {
if (tintList != null) {
final int color = tintList.getColorForState(getState(), 0);
setColorFilter(color, PorterDuff.Mode.SRC_IN);
return true; // Needs invalidate
}
return false;
}
}
}
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