From a91752a2739d128db1bc0c358db959aeb7fb1d9c Mon Sep 17 00:00:00 2001
From: evanbacon <bacon@expo.io>
Date: Wed, 13 Nov 2024 13:57:56 -0600
Subject: [PATCH 1/3] support transparent large header

---
 ios/RNSScreenStackHeaderConfig.mm | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/ios/RNSScreenStackHeaderConfig.mm b/ios/RNSScreenStackHeaderConfig.mm
index d0b9e4be74..cb8e47c393 100644
--- a/ios/RNSScreenStackHeaderConfig.mm
+++ b/ios/RNSScreenStackHeaderConfig.mm
@@ -670,6 +670,17 @@ + (void)updateViewController:(UIViewController *)vc
 
     UINavigationBarAppearance *scrollEdgeAppearance =
         [[UINavigationBarAppearance alloc] initWithBarAppearance:appearance];
+    if (config.largeTitleBackgroundColor != nil) {
+      // Add support for using a fully transparent bar when the backgroundColor is set to transparent. 
+      if (CGColorGetAlpha(config.largeTitleBackgroundColor.CGColor) == 0.) {
+      // This will also remove the background blur effect in the large title which is otherwise inherited from the standard appearance.
+        [scrollEdgeAppearance configureWithTransparentBackground];
+        // This must be set to nil otherwise a default view will be added to the navigation bar background with an opaque background.
+        scrollEdgeAppearance.backgroundColor = nil;
+      } else {
+        scrollEdgeAppearance.backgroundColor = config.largeTitleBackgroundColor;
+      }
+    }
     if (config.largeTitleBackgroundColor != nil) {
       scrollEdgeAppearance.backgroundColor = config.largeTitleBackgroundColor;
     }

From 55581af13e9d8d5461908afda88a39aa351b0aa8 Mon Sep 17 00:00:00 2001
From: evanbacon <bacon@expo.io>
Date: Wed, 13 Nov 2024 14:10:40 -0600
Subject: [PATCH 2/3] preserve shadow props

---
 ios/RNSScreenStackHeaderConfig.mm | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/ios/RNSScreenStackHeaderConfig.mm b/ios/RNSScreenStackHeaderConfig.mm
index cb8e47c393..67df042cf4 100644
--- a/ios/RNSScreenStackHeaderConfig.mm
+++ b/ios/RNSScreenStackHeaderConfig.mm
@@ -442,8 +442,16 @@ + (UINavigationBarAppearance *)buildAppearance:(UIViewController *)vc
   UINavigationBarAppearance *appearance = [UINavigationBarAppearance new];
 
   if (config.backgroundColor && CGColorGetAlpha(config.backgroundColor.CGColor) == 0.) {
+    // Preserve the shadow properties in case the user wants to show the shadow on scroll.
+    UIColor *shadowColor = appearance.shadowColor;
+    UIImage *shadowImage = appearance.shadowImage;
     // transparent background color
     [appearance configureWithTransparentBackground];
+      
+    if (!config.hideShadow) {
+      appearance.shadowColor = shadowColor;
+      appearance.shadowImage = shadowImage;
+    }
   } else {
     [appearance configureWithOpaqueBackground];
   }

From 0b8c9d4e758757df887868d06fd23bc26497fec1 Mon Sep 17 00:00:00 2001
From: Evan Bacon <baconbrix@gmail.com>
Date: Thu, 14 Nov 2024 08:06:25 -0600
Subject: [PATCH 3/3] Update ios/RNSScreenStackHeaderConfig.mm

---
 ios/RNSScreenStackHeaderConfig.mm | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/ios/RNSScreenStackHeaderConfig.mm b/ios/RNSScreenStackHeaderConfig.mm
index 67df042cf4..c575478d59 100644
--- a/ios/RNSScreenStackHeaderConfig.mm
+++ b/ios/RNSScreenStackHeaderConfig.mm
@@ -689,9 +689,6 @@ + (void)updateViewController:(UIViewController *)vc
         scrollEdgeAppearance.backgroundColor = config.largeTitleBackgroundColor;
       }
     }
-    if (config.largeTitleBackgroundColor != nil) {
-      scrollEdgeAppearance.backgroundColor = config.largeTitleBackgroundColor;
-    }
     if (config.largeTitleHideShadow) {
       scrollEdgeAppearance.shadowColor = nil;
     }