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TypefaceUtils.java
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TypefaceUtils.java
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/*
* Copyright 2022 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
*
* https://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.google.android.material.resources;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.Typeface;
import android.graphics.fonts.FontStyle;
import android.os.Build.VERSION;
import android.os.Build.VERSION_CODES;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RestrictTo;
import androidx.annotation.RestrictTo.Scope;
import androidx.core.math.MathUtils;
/**
* Utility class that helps interact with Typeface objects.
*
* @hide
*/
@RestrictTo(Scope.LIBRARY_GROUP)
public class TypefaceUtils {
private TypefaceUtils() {}
/** Clones a typeface with additional boldness (weight). */
@Nullable
public static Typeface maybeCopyWithFontWeightAdjustment(
@NonNull Context context, @NonNull Typeface typeface) {
return maybeCopyWithFontWeightAdjustment(context.getResources().getConfiguration(), typeface);
}
/** Clones a typeface with additional boldness (weight). */
@Nullable
public static Typeface maybeCopyWithFontWeightAdjustment(
@NonNull Configuration configuration, @NonNull Typeface typeface) {
if (VERSION.SDK_INT >= VERSION_CODES.S
&& configuration.fontWeightAdjustment != Configuration.FONT_WEIGHT_ADJUSTMENT_UNDEFINED
&& configuration.fontWeightAdjustment != 0) {
int adjustedWeight =
MathUtils.clamp(
typeface.getWeight() + configuration.fontWeightAdjustment,
FontStyle.FONT_WEIGHT_MIN,
FontStyle.FONT_WEIGHT_MAX);
return Typeface.create(typeface, adjustedWeight, typeface.isItalic());
}
return null;
}
}