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/*
* Copyright (C) 2016 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.deskclock;
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import androidx.annotation.AttrRes;
import androidx.annotation.ColorInt;
public final class ThemeUtils {
/** Temporary array used internally to resolve attributes. */
private static final int[] TEMP_ATTR = new int[1];
private ThemeUtils() {
// Prevent instantiation.
}
/**
* Convenience method for retrieving a themed color value.
*
* @param context the {@link Context} to resolve the theme attribute against
* @param attr the attribute corresponding to the color to resolve
* @return the color value of the resolved attribute
*/
@ColorInt
public static int resolveColor(Context context, @AttrRes int attr) {
return resolveColor(context, attr, null /* stateSet */);
}
/**
* Convenience method for retrieving a themed color value.
*
* @param context the {@link Context} to resolve the theme attribute against
* @param attr the attribute corresponding to the color to resolve
* @param stateSet an array of {@link android.view.View} states
* @return the color value of the resolved attribute
*/
@ColorInt
public static int resolveColor(Context context, @AttrRes int attr, @AttrRes int[] stateSet) {
final TypedArray a;
synchronized (TEMP_ATTR) {
TEMP_ATTR[0] = attr;
a = context.obtainStyledAttributes(TEMP_ATTR);
}
try {
if (stateSet == null) {
return a.getColor(0, Color.RED);
}
final ColorStateList colorStateList = a.getColorStateList(0);
if (colorStateList != null) {
return colorStateList.getColorForState(stateSet, Color.RED);
}
return Color.RED;
} finally {
a.recycle();
}
}
/**
* Convenience method for retrieving a themed drawable.
*
* @param context the {@link Context} to resolve the theme attribute against
* @param attr the attribute corresponding to the drawable to resolve
* @return the drawable of the resolved attribute
*/
public static Drawable resolveDrawable(Context context, @AttrRes int attr) {
final TypedArray a;
synchronized (TEMP_ATTR) {
TEMP_ATTR[0] = attr;
a = context.obtainStyledAttributes(TEMP_ATTR);
}
try {
return a.getDrawable(0);
} finally {
a.recycle();
}
}
}
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