From d7dc1ba49d71e87139e6fcffb12eeeb1e713390f Mon Sep 17 00:00:00 2001
From: Jhen-Jie Hong <developer@jhen.me>
Date: Thu, 2 Nov 2023 18:06:30 +0800
Subject: [PATCH] feat(android): support font assets (#1128)

---
 .../LottieAnimationViewPropertyManager.kt     | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/packages/core/android/src/main/java/com/airbnb/android/react/lottie/LottieAnimationViewPropertyManager.kt b/packages/core/android/src/main/java/com/airbnb/android/react/lottie/LottieAnimationViewPropertyManager.kt
index 654e64c9..a3e33334 100644
--- a/packages/core/android/src/main/java/com/airbnb/android/react/lottie/LottieAnimationViewPropertyManager.kt
+++ b/packages/core/android/src/main/java/com/airbnb/android/react/lottie/LottieAnimationViewPropertyManager.kt
@@ -1,6 +1,7 @@
 package com.airbnb.android.react.lottie
 
 import android.graphics.ColorFilter
+import android.graphics.Typeface
 import android.net.Uri
 import android.util.Log
 import android.widget.ImageView
@@ -10,6 +11,7 @@ import com.airbnb.lottie.LottieProperty
 import com.airbnb.lottie.RenderMode
 import com.airbnb.lottie.SimpleColorFilter
 import com.airbnb.lottie.TextDelegate
+import com.airbnb.lottie.FontAssetDelegate
 import com.airbnb.lottie.model.KeyPath
 import com.airbnb.lottie.value.LottieValueCallback
 import com.facebook.react.BuildConfig
@@ -17,6 +19,8 @@ import com.facebook.react.bridge.ColorPropConverter
 import com.facebook.react.bridge.ReadableArray
 import com.facebook.react.bridge.ReadableMap
 import com.facebook.react.bridge.ReadableType
+import com.facebook.react.views.text.ReactFontManager
+import com.facebook.react.views.text.TextAttributeProps.UNSET
 import com.facebook.react.util.RNLog
 import java.lang.ref.WeakReference
 import java.util.regex.Pattern
@@ -60,6 +64,29 @@ class LottieAnimationViewPropertyManager(view: LottieAnimationView) {
 
     init {
         viewWeakReference = WeakReference(view)
+
+        view.setFontAssetDelegate(object : FontAssetDelegate() {
+            override fun fetchFont(fontFamily: String): Typeface {
+                val typeface = ReactFontManager.getInstance()
+                    .getTypeface(fontFamily, UNSET, UNSET, view.context.assets)
+                return typeface?: Typeface.defaultFromStyle(400)
+            }
+        
+            override fun fetchFont(fontFamily: String, fontStyle: String, fontName: String): Typeface {
+                val weight = when (fontStyle) {
+                    "Thin" -> 100
+                    "Light" -> 200
+                    "Normal", "Regular" -> 400
+                    "Medium" -> 500
+                    "Bold" -> 700
+                    "Black" -> 900
+                    else -> UNSET
+                }
+                val typeface = ReactFontManager.getInstance()
+                    .getTypeface(fontName, UNSET, weight, view.context.assets)
+                return typeface?: Typeface.defaultFromStyle(400)
+            }
+        })
     }
 
     /**