Add View+withPlaceholder.swift

treehollow · May 29, 2021 · 25670f3 · 25670f3
1 parent 0e797f5
commit 25670f3
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/Source/Hollow/View/Utilities/View+withPlaceholder.swift b/Source/Hollow/View/Utilities/View+withPlaceholder.swift
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+//
+//  View+withPlaceholder.swift
+//  Hollow
+//
+//  Created by liang2kl on 2021/5/29.
+//  Copyright © 2021 treehollow. All rights reserved.
+//
+
+import SwiftUI
+
+extension View {
+    /// To hide the original view when used as source of `.matchedGeometryEffect()`
+    @ViewBuilder func withPlaceholder<HashableValue: Hashable>(_ hide: Bool, namespace: Namespace.ID?, id: HashableValue) -> some View {
+        if hide { self.opacity(0) }
+        else { self.conditionalMatchedGeometryEffect(id: id, in: namespace) }
+    }
+}