1 files changed, 17 insertions, 0 deletions
diff --git a/Jel/Models/ViewOffsetKey.swift b/Jel/Models/ViewOffsetKey.swift
new file mode 100644
index 0000000..b118478
--- /dev/null
+++ b/Jel/Models/ViewOffsetKey.swift
@@ -0,0 +1,17 @@
+//
+//  ViewOffsetKey.swift
+//  Jel
+//
+//  Created by zerocool on 12/24/23.
+//
+
+import SwiftUI
+
+/// A preference key to store ScrollView offset
+public struct ViewOffsetKey: PreferenceKey {
+  public typealias Value = CGFloat
+  public static var defaultValue = CGFloat.zero
+  public static func reduce(value: inout Value, nextValue: () -> Value) {
+    value += nextValue()
+  }
+}