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[CollapsingTextHelper][TextAppearance] refactor how bold typefaces ar…
…e created PiperOrigin-RevId: 425988666
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64
lib/java/com/google/android/material/resources/TypefaceUtils.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| /* | ||
| * 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; | ||
|
|
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| 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 { | ||
|
|
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| private TypefaceUtils() {} | ||
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| // 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; | ||
| } | ||
|
|
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| // Clones a typeface with additional boldness (weight). | ||
| @Nullable | ||
| public static Typeface maybeCopyWithFontWeightAdjustment( | ||
| @NonNull Context context, @NonNull Typeface typeface) { | ||
| return maybeCopyWithFontWeightAdjustment(context.getResources().getConfiguration(), typeface); | ||
| } | ||
| } |