src/com/android/wallpaper/module/DefaultDrawableLayerResolver.java

/*
 * Copyright (C) 2019 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.wallpaper.module;

import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;

/**
 * Default implementation of {@link DrawableLayerResolver}
 */
public class DefaultDrawableLayerResolver implements DrawableLayerResolver {

    /**
     * Picks and returns the top most layer of the given {@link LayerDrawable}
     */
    @Override
    public Drawable resolveLayer(LayerDrawable layerDrawable) {
        return layerDrawable.getDrawable(layerDrawable.getNumberOfLayers() - 1);
    }
}