Create FUNDING.yml

fixes #4

.github/FUNDING.yml

@@ -0,0 +1,2 @@
+github: [laosb]
+buy_me_a_coffee: laosb

Package.swift

@@ -26,5 +26,6 @@ let package = Package(
         .target(
             name: "CropImage",
             dependencies: [])
-    ]
+    ],
+    swiftLanguageVersions: [.version("6"), .v5]
 )

Sources/CropImage/CropImageView.swift

@@ -19,7 +19,7 @@ public struct CropImageView<Controls: View, CutHole: View>: View {
     ///   - scale: The scale binding of the image.
     ///   - rotation: The rotation binding of the image.
     ///   - crop: An async function to trigger crop action. Result will be delivered via ``onCrop``.
-    public typealias ControlClosure<Controls> = (
+    public typealias ControlClosure = (
         _ offset: Binding<CGSize>,
         _ scale: Binding<CGFloat>,
         _ rotation: Binding<Angle>,
@@ -30,7 +30,7 @@ public struct CropImageView<Controls: View, CutHole: View>: View {
     ///
     /// - Parameters:
     ///   - targetSize: The size of the cut hole.
-    public typealias CutHoleClosure<CutHole> = (_ targetSize: CGSize) -> CutHole
+    public typealias CutHoleClosure = (_ targetSize: CGSize) -> CutHole
 
     /// Errors that could happen during the cropping process.
     public enum CropError: Error {
@@ -66,8 +66,8 @@ public struct CropImageView<Controls: View, CutHole: View>: View {
     ///
     /// The error should be a ``CropError``.
     public var onCrop: (Result<PlatformImage, Error>) -> Void
-    var controls: ControlClosure<Controls>
+    var controls: ControlClosure
-    var cutHole: CutHoleClosure<CutHole>
+    var cutHole: CutHoleClosure
     /// Create a ``CropImageView`` with a custom controls view and a custom cut hole.
     public init(
         image: PlatformImage,
@@ -75,8 +75,8 @@ public struct CropImageView<Controls: View, CutHole: View>: View {
         targetScale: CGFloat = 1,
         fulfillTargetFrame: Bool = true,
         onCrop: @escaping (Result<PlatformImage, Error>) -> Void,
-        @ViewBuilder controls: @escaping ControlClosure<Controls>,
+        @ViewBuilder controls: @escaping ControlClosure,
-        @ViewBuilder cutHole: @escaping CutHoleClosure<CutHole>
+        @ViewBuilder cutHole: @escaping CutHoleClosure
     ) {
         self.image = image
         self.targetSize = targetSize
@@ -92,7 +92,7 @@ public struct CropImageView<Controls: View, CutHole: View>: View {
         targetScale: CGFloat = 1,
         fulfillTargetFrame: Bool = true,
         onCrop: @escaping (Result<PlatformImage, Error>) -> Void,
-        @ViewBuilder controls: @escaping ControlClosure<Controls>
+        @ViewBuilder controls: @escaping ControlClosure
     ) where CutHole == DefaultCutHoleView {
         self.image = image
         self.targetSize = targetSize
@@ -225,7 +225,7 @@ public struct CropImageView<Controls: View, CutHole: View>: View {
     }
 }
 
-struct CropImageView_Previews: PreviewProvider {
+#Preview {
     struct PreviewView: View {
         @State private var targetSize: CGSize = .init(width: 100, height: 100)
         @State private var result: Result<PlatformImage, Error>? = nil
@@ -233,7 +233,7 @@ struct CropImageView_Previews: PreviewProvider {
         var body: some View {
             VStack {
                 CropImageView(
-                    image: .init(contentsOfFile: "/Users/laosb/Downloads/png.png")!,
+                    image: .previewImage,
                     targetSize: targetSize
                 ) {
                     result = $0
@@ -262,18 +262,16 @@ struct CropImageView_Previews: PreviewProvider {
                         }
                     } header: { Text("Result") }
                 }
-                #if os(macOS)
+#if os(macOS)
                 .formStyle(.grouped)
-                #endif
+#endif
             }
         }
     }
     
-    static var previews: some View {
+    return PreviewView()
-        PreviewView()
+#if os(macOS)
-        #if os(macOS)
         .frame(width: 500)
         .frame(minHeight: 600)
-        #endif
+#endif
-    }
 }

Sources/CropImage/DefaultCutHoleShape.swift

@@ -44,20 +44,18 @@ struct DefaultCutHoleShape: Shape {
     }
 }
 
-struct DefaultCutHoleShape_Previews: PreviewProvider {
+#Preview("Default") {
-    static var previews: some View {
     VStack {
         DefaultCutHoleShape(size: .init(width: 100, height: 100))
             .fill(style: FillStyle(eoFill: true))
             .foregroundColor(.black.opacity(0.6))
     }
-        .previewDisplayName("Default")
+}
+
+#Preview("Circular") {
     VStack {
         DefaultCutHoleShape(size: .init(width: 100, height: 100), isCircular: true)
             .fill(style: FillStyle(eoFill: true))
             .foregroundColor(.black.opacity(0.6))
     }
-        .previewDisplayName("Circular")
-    }
 }
-

Sources/CropImage/DefaultCutHoleView.swift

@@ -61,11 +61,10 @@ public struct DefaultCutHoleView: View {
     }
 }
 
-struct DefaultCutHoleView_Previews: PreviewProvider {
+#Preview("Default") {
-    static var previews: some View {
     DefaultCutHoleView(targetSize: .init(width: 100, height: 100))
-            .previewDisplayName("Default")
+}
-        DefaultCutHoleView(targetSize: .init(width: 100, height: 100), isCircular: true)
+
-            .previewDisplayName("Circular")
+#Preview("Circular") {
-    }
+    DefaultCutHoleView(targetSize: .init(width: 100, height: 100), isCircular: true)
 }

Sources/CropImage/PlatformImage.swift

@@ -13,10 +13,17 @@ import AppKit
 ///
 /// On macOS, it's `NSImage` and on iOS/visionOS it's `UIImage`.
 public typealias PlatformImage = NSImage
+extension PlatformImage {
+  @MainActor static let previewImage: PlatformImage = .init(contentsOf: URL(string: "file:///System/Library/Desktop%20Pictures/Hello%20Metallic%20Blue.heic")!)!
+}
 #else
 import UIKit
 /// The image object type, aliased to each platform.
 ///
 /// On macOS, it's `NSImage` and on iOS/visionOS it's `UIImage`.
 public typealias PlatformImage = UIImage
+extension PlatformImage {
+    // This doesn't really work, but at least passes build.
+    static let previewImage: PlatformImage = .init(contentsOfFile: "/System/Library/Desktop Pictures/Hello Metallic Blue.heic")!
+}
 #endif

Sources/CropImage/UnderlyingImageView.swift

@@ -25,6 +25,11 @@ struct UnderlyingImageView: View {
     @State private var tempOffset: CGSize = .zero
     @State private var tempScale: CGFloat = 1
     @State private var tempRotation: Angle = .zero
+    @State private var scrolling: Bool = false
+#if os(macOS)
+    @State private var hovering: Bool = false
+    @State private var scrollMonitor: Any?
+#endif
 
     // When rotated odd multiples of 90 degrees, we need to switch width and height of the image in calculations.
     var isRotatedOddMultiplesOf90Deg: Bool {
@@ -66,12 +71,18 @@ struct UnderlyingImageView: View {
         clampedOffset.height = clampedOffset.height.clamped(to: yOffsetBounds(at: clampedScale))
 
         if clampedScale != scale || clampedOffset != offset {
+            if scrolling {
+                scale = clampedScale
+                offset = clampedOffset
+                scrolling = false
+            } else {
                 withAnimation(.interactiveSpring()) {
                     scale = clampedScale
                     offset = clampedOffset
                 }
             }
         }
+    }
 
     func setInitialScale(basedOn viewSize: CGSize) {
         guard viewSize != .zero else { return }
@@ -81,6 +92,24 @@ struct UnderlyingImageView: View {
         scale = min(widthScale, heightScale)
     }
 
+#if os(macOS)
+    private func setupScrollMonitor() {
+      scrollMonitor = NSEvent.addLocalMonitorForEvents(matching: .scrollWheel) { event in
+            if hovering {
+                scrolling = true
+                scale = scale + event.scrollingDeltaY / 1000
+            }
+            return event
+        }
+    }
+  
+    private func removeScrollMonitor() {
+        if let scrollMonitor {
+            NSEvent.removeMonitor(scrollMonitor)
+        }
+    }
+#endif
+
     var imageView: Image {
 #if os(macOS)
         Image(nsImage: image)
@@ -94,6 +123,14 @@ struct UnderlyingImageView: View {
             .gesture(dragGesture)
             .gesture(magnificationgesture)
             .gesture(rotationGesture)
+#if os(macOS)
+            .onAppear {
+                setupScrollMonitor()
+            }
+            .onDisappear {
+                removeScrollMonitor()
+            }
+#endif
     }
 
     var dragGesture: some Gesture {
@@ -148,10 +185,13 @@ struct UnderlyingImageView: View {
             .onChange(of: rotation) { _ in
                 adjustToFulfillTargetFrame()
             }
+#if os(macOS)
+            .onHover { hovering = $0 }
+#endif
     }
 }
 
-struct MoveAndScalableImageView_Previews: PreviewProvider {
+#Preview {
     struct PreviewView: View {
         @State private var offset: CGSize = .zero
         @State private var scale: CGFloat = 1
@@ -162,7 +202,7 @@ struct MoveAndScalableImageView_Previews: PreviewProvider {
                 offset: $offset,
                 scale: $scale,
                 rotation: $rotation,
-                image: .init(contentsOfFile: "/Users/laosb/Downloads/png.png")!,
+                image: .previewImage,
                 viewSize: .init(width: 200, height: 100),
                 targetSize: .init(width: 100, height: 100),
                 fulfillTargetFrame: true
@@ -171,7 +211,5 @@ struct MoveAndScalableImageView_Previews: PreviewProvider {
         }
     }
     
-    static var previews: some View {
+    return PreviewView()
-        PreviewView()
-    }
 }