ResourcesUtil.java
/*
* Copyright (C) 2017 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 androidx.wear.internal.widget;
import android.content.Context;
import androidx.annotation.FractionRes;
import androidx.annotation.RestrictTo;
import androidx.annotation.RestrictTo.Scope;
/**
* Utility methods to help with resource calculations.
*
*/
@RestrictTo(Scope.LIBRARY)
public final class ResourcesUtil {
/**
* Returns the screen width in pixels.
*/
public static int getScreenWidthPx(Context context) {
return context.getResources().getDisplayMetrics().widthPixels;
}
/**
* Returns the screen height in pixels.
*/
public static int getScreenHeightPx(Context context) {
return context.getResources().getDisplayMetrics().heightPixels;
}
/**
* Returns the number of pixels equivalent to the percentage of {@code resId} to the current
* screen.
*/
public static int getFractionOfScreenPx(Context context, int screenPx, @FractionRes int resId) {
float marginPercent = context.getResources().getFraction(resId, 1, 1);
return (int) (marginPercent * screenPx);
}
private ResourcesUtil() {}
}