1 /* 2 * Copyright (C) 2022 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 @file:OptIn(ExperimentalTextApi::class) 18 19 package com.android.compose.theme.typography 20 21 import android.content.Context 22 import androidx.compose.ui.text.ExperimentalTextApi 23 import androidx.compose.ui.text.font.DeviceFontFamilyName 24 import androidx.compose.ui.text.font.Font 25 import androidx.compose.ui.text.font.FontFamily 26 import androidx.compose.ui.text.font.FontWeight 27 28 internal class TypefaceTokens(typefaceNames: TypefaceNames) { 29 companion object { 30 val WeightMedium = FontWeight.Medium 31 val WeightRegular = FontWeight.Normal 32 } 33 34 private val brandFont = DeviceFontFamilyName(typefaceNames.brand) 35 private val plainFont = DeviceFontFamilyName(typefaceNames.plain) 36 37 // Google Sans Flex emphasized styles 38 private val displayLargeEmphasizedFont = 39 DeviceFontFamilyName("variable-display-large-emphasized") 40 private val displayMediumEmphasizedFont = 41 DeviceFontFamilyName("variable-display-medium-emphasized") 42 private val displaySmallEmphasizedFont = 43 DeviceFontFamilyName("variable-display-small-emphasized") 44 private val headlineLargeEmphasizedFont = 45 DeviceFontFamilyName("variable-headline-large-emphasized") 46 private val headlineMediumEmphasizedFont = 47 DeviceFontFamilyName("variable-headline-medium-emphasized") 48 private val headlineSmallEmphasizedFont = 49 DeviceFontFamilyName("variable-headline-small-emphasized") 50 private val titleLargeEmphasizedFont = DeviceFontFamilyName("variable-title-large-emphasized") 51 private val titleMediumEmphasizedFont = DeviceFontFamilyName("variable-title-medium-emphasized") 52 private val titleSmallEmphasizedFont = DeviceFontFamilyName("variable-title-small-emphasized") 53 private val bodyLargeEmphasizedFont = DeviceFontFamilyName("variable-body-large-emphasized") 54 private val bodyMediumEmphasizedFont = DeviceFontFamilyName("variable-body-medium-emphasized") 55 private val bodySmallEmphasizedFont = DeviceFontFamilyName("variable-body-small-emphasized") 56 private val labelLargeEmphasizedFont = DeviceFontFamilyName("variable-label-large-emphasized") 57 private val labelMediumEmphasizedFont = DeviceFontFamilyName("variable-label-medium-emphasized") 58 private val labelSmallEmphasizedFont = DeviceFontFamilyName("variable-label-small-emphasized") 59 60 val brand = 61 FontFamily( 62 Font(brandFont, weight = WeightMedium), 63 Font(brandFont, weight = WeightRegular), 64 ) 65 val plain = 66 FontFamily( 67 Font(plainFont, weight = WeightMedium), 68 Font(plainFont, weight = WeightRegular), 69 ) 70 71 val displayLargeEmphasized = FontFamily(Font(displayLargeEmphasizedFont)) 72 val displayMediumEmphasized = FontFamily(Font(displayMediumEmphasizedFont)) 73 val displaySmallEmphasized = FontFamily(Font(displaySmallEmphasizedFont)) 74 val headlineLargeEmphasized = FontFamily(Font(headlineLargeEmphasizedFont)) 75 val headlineMediumEmphasized = FontFamily(Font(headlineMediumEmphasizedFont)) 76 val headlineSmallEmphasized = FontFamily(Font(headlineSmallEmphasizedFont)) 77 val titleLargeEmphasized = FontFamily(Font(titleLargeEmphasizedFont)) 78 val titleMediumEmphasized = FontFamily(Font(titleMediumEmphasizedFont)) 79 val titleSmallEmphasized = FontFamily(Font(titleSmallEmphasizedFont)) 80 val bodyLargeEmphasized = FontFamily(Font(bodyLargeEmphasizedFont)) 81 val bodyMediumEmphasized = FontFamily(Font(bodyMediumEmphasizedFont)) 82 val bodySmallEmphasized = FontFamily(Font(bodySmallEmphasizedFont)) 83 val labelLargeEmphasized = FontFamily(Font(labelLargeEmphasizedFont)) 84 val labelMediumEmphasized = FontFamily(Font(labelMediumEmphasizedFont)) 85 val labelSmallEmphasized = FontFamily(Font(labelSmallEmphasizedFont)) 86 } 87 88 internal data class TypefaceNames 89 private constructor( 90 val brand: String, 91 val plain: String, 92 ) { 93 private enum class Config(val configName: String, val default: String) { 94 Brand("config_headlineFontFamily", "sans-serif"), 95 Plain("config_bodyFontFamily", "sans-serif"), 96 } 97 98 companion object { getnull99 fun get(context: Context): TypefaceNames { 100 return TypefaceNames( 101 brand = getTypefaceName(context, Config.Brand), 102 plain = getTypefaceName(context, Config.Plain), 103 ) 104 } 105 getTypefaceNamenull106 private fun getTypefaceName(context: Context, config: Config): String { 107 return context 108 .getString(context.resources.getIdentifier(config.configName, "string", "android")) 109 .takeIf { it.isNotEmpty() } 110 ?: config.default 111 } 112 } 113 } 114