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1. Put your header and content bodies code into a ScalingHeaderScrollView constructor.
2. Set the necessary modifiers, see below.

struct ContentView: View {

    var body: some View {
       ScalingHeaderScrollView {
            ZStack {
                Rectangle()
                    .fill(.gray.opacity(0.15))
                Image("header")
            }
        } content: {
            Text("↓ Pull to refresh ↓")
                .multilineTextAlignment(.center)
                .padding()
        }
    }
}

header - @ViewBuilder for your header
content - @ViewBuilder for your content

passes current collapse progress value into progress binding: 0 for not collapsed at all, 1 - for fully collapsed

.collapseProgress(_ progress: Binding<CGFloat>)

allows set up callback and isLoading state for pull-to-refresh action

.pullToRefresh(isLoading: Binding<Bool>, perform: @escaping () -> Void)

allows content scroll reset, need to change Binding to true

.scrollToTop(resetScroll: Binding<Bool>)

changes min and max heights of Header, default min = 150.0 and max = 350.0

.height(min: CGFloat = 150.0, max: CGFloat = 350.0)

when scrolling up - switch between actual header collapse and simply moving it up (by default moving up)

.allowsHeaderCollapse()

when scrolling down - enable (disabled by default) header scale

.allowsHeaderGrowth()

enable (disabled by default) header snap (once you lift your finger header snaps either to min or max height automatically)

.allowsHeaderSnap()

To try ScalingHeaderScrollView examples:

• Clone the repo https://github.com/exyte/ScalingHeaderScrollView.git
• Open terminal and run cd <ScalingHeaderScrollViewRepo>/Example/
• Run pod install to install all dependencies
• Run open Example.xcworkspace/ to open project in the Xcode
• Try it!

To install ScalingHeaderScrollView, simply add the following line to your Podfile:

pod 'ScalingHeaderScrollView'

To integrate ScalingHeaderScrollView into your Xcode project using Carthage, specify it in your Cartfile

github "Exyte/ScalingHeaderScrollView"

dependencies: [
    .package(url: "https://github.com/exyte/ScalingHeaderScrollView.git", from: "1.0.0")
]

• iOS 14+
• Xcode 12+