feat: add hand button in element tool bar

Memola/Canvas/Tool/Core/Tool.swift

@@ -21,7 +21,7 @@ public class Tool: NSObject, ObservableObject {
     // MARK: - Photo
     @Published var selectedPhotoItem: PhotoItem?
 
-    @Published var selection: ToolSelection = .none
+    @Published var selection: ToolSelection = .hand
 
     let scrollPublisher = PassthroughSubject<String, Never>()
     var markers: [Pen] {
@@ -32,6 +32,10 @@ public class Tool: NSObject, ObservableObject {
         self.object = object
     }
 
+    func selectTool(_ selection: ToolSelection) {
+        self.selection = selection
+    }
+
     func load() {
         DispatchQueue.main.async { [weak self] in
             guard let self else { return }

Memola/Canvas/Tool/Core/ToolSelection.swift

@@ -8,7 +8,7 @@
 import Foundation
 
 enum ToolSelection: Equatable {
-    case none
+    case hand
     case pen
     case photo
 }

Memola/Canvas/View/Bridge/ViewController/CanvasViewController.swift

@@ -335,7 +335,7 @@ extension CanvasViewController {
         let enablesDrawing: Bool
         let enablesPhotoInsertion: Bool
         switch selection {
-        case .none:
+        case .hand:
             enablesScrolling = true
             enablesDrawing = false
             enablesPhotoInsertion = false

Memola/Features/Memo/Toolbar/Toolbar.swift

@@ -133,7 +133,20 @@ struct Toolbar: View {
         HStack(spacing: 0) {
             Button {
                 withAnimation {
-                    tool.selection = tool.selection == .pen ? .none : .pen
+                    tool.selectTool(.hand)
+                }
+            } label: {
+                Image(systemName: "hand.draw.fill")
+                    .fontWeight(.heavy)
+                    .contentShape(.circle)
+                    .frame(width: size, height: size)
+                    .background(tool.selection == .hand ? Color.accentColor : Color.clear)
+                    .foregroundStyle(tool.selection == .hand ? Color.white : Color.accentColor)
+                    .clipShape(.rect(cornerRadius: 8))
+            }
+            Button {
+                withAnimation {
+                    tool.selectTool(.pen)
                 }
             } label: {
                 Image(systemName: "pencil")
@@ -148,7 +161,7 @@ struct Toolbar: View {
             HStack(spacing: 0) {
                 Button {
                     withAnimation {
-                        tool.selection = tool.selection == .photo ? .none : .photo
+                        tool.selectTool(.photo)
                     }
                 } label: {
                     Image(systemName: "photo")