taler-ios

commit b94b4aa4750133213469e878dba4e14fe6238f64
parent d370e2c4ec12832e7033a55948f5359eb30c7621
Author: Marc Stibane <marc@taler.net>
Date:   Sat, 12 Oct 2024 16:22:20 +0200

DragGesture

Diffstat:
M
TalerWallet1/Views/HelperViews/TabBarView.swift
 | 
29
+++++++++++++++++++++++++++++
M
TalerWallet1/Views/Main/MainView.swift
 | 
3
+++

2 files changed, 32 insertions(+), 0 deletions(-)
diff --git a/TalerWallet1/Views/HelperViews/TabBarView.swift b/TalerWallet1/Views/HelperViews/TabBarView.swift
@@ -11,11 +11,15 @@ struct TabBarView: View {
     @Binding var selection: Tab
     @Binding var hidden: Int
     let onActionTab: () -> Void
+    let onActionDrag: () -> Void
 
     @Environment(\.keyboardShowing) var keyboardShowing
 
     @AppStorage("minimalistic") var minimalistic: Bool = false
 
+    @State private var offset = CGSize.zero
+    @State private var didDrag = false
+
     private func tabBarItem(for tab: Tab) -> some View {
         VStack(spacing: 0) {
             if tab == .actions {
@@ -27,6 +31,31 @@ struct TabBarView: View {
                     .frame(width: width, height: height)
                     .clipped() // Crop the image to the frame size
                     .padding(.bottom, 4)
+                    .offset(offset)
+                    .opacity(1 - Double(abs(offset.height / 35)))
+                    .gesture(
+                        DragGesture()
+                            .onChanged { gesture in
+                                var trans = gesture.translation
+                                trans.width = .zero
+                                if abs(offset.height) > 30 {
+                                    offset = .zero
+                                    didDrag = true
+                                    onActionDrag()    // switch to camera
+                                } else {
+                                    offset = trans
+                                }
+                            }
+                            .onEnded { _ in
+                                if didDrag {
+                                    didDrag = false
+                                } else {
+                                    onActionTab()
+                                }
+                                offset = .zero
+                            }
+                    )
+
             } else {
                 let size = minimalistic ? 36.0 : 24.0
                 tab.image
diff --git a/TalerWallet1/Views/Main/MainView.swift b/TalerWallet1/Views/Main/MainView.swift
@@ -328,6 +328,9 @@ extension MainView {
                 // TODO: check NavigationStack, pop only if necessary
 //                ViewState.shared.popToRootView(nil)   either do this after any of the buttons was operated, or don't do it at all
                 showActionSheet = true
+            } onActionDrag: {
+//                showScanner = true
+//                showActionSheet = true
             }
 
             let scope = ScopeInfo(type: ScopeInfo.ScopeInfoType.exchange,