first commit

Package.swift

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+// swift-tools-version:5.5
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "Scroller",
+    platforms: [
+        .iOS(.v14),
+        .macOS(.v11)
+    ],
+    products: [
+        // Products define the executables and libraries a package produces, and make them visible to other packages.
+        .library(
+            name: "Scroller",
+            targets: ["Scroller"]),
+    ],
+    dependencies: [
+        // Dependencies declare other packages that this package depends on.
+        // .package(url: /* package url */, from: "1.0.0"),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
+        // Targets can depend on other targets in this package, and on products in packages this package depends on.
+        .target(
+            name: "Scroller",
+            dependencies: []),
+        .testTarget(
+            name: "ScrollerTests",
+            dependencies: ["Scroller"]),
+    ]
+)

README.md

@@ -1 +1,58 @@
-# Scroller
+# **Scroller**
+You can animate in individual views based on scroll position. Developed with SwiftUI. This library supports iOS/macOS.
+
+[![Platforms](https://img.shields.io/badge/Platforms-iOS%20%7C%20macOS-blue?style=flat-square)](https://developer.apple.com/macOS)
+[![iOS](https://img.shields.io/badge/iOS-14.0-blue.svg)](https://developer.apple.com/iOS)
+[![macOS](https://img.shields.io/badge/macOS-11.0-blue.svg)](https://developer.apple.com/macOS)
+[![instagram](https://img.shields.io/badge/instagram-@dev.fabula-orange.svg?style=flat-square)](https://www.instagram.com/dev.fabula)
+[![SPM](https://img.shields.io/badge/SPM-compatible-red?style=flat-square)](https://developer.apple.com/documentation/swift_packages/package/)
+[![MIT](https://img.shields.io/badge/licenses-MIT-red.svg)](https://opensource.org/licenses/MIT)  
+
+## Screenshot
+<img src="Markdown/Scroller.gif">
+
+## Usages
+1. Scroller
+    ```swift
+    Scroller(.vertical, value: $valueV) {
+        ForEach(0...5, id: \.self) { index in
+            GeometryReader { proxy in
+                ScrollerVContent(value: proxy.scrollerValue(.vertical))
+            }
+        }
+    } lastContent: {
+        Rectangle()
+            .fill(Color.blue)
+            .overlay(Text("LastView"))
+            .foregroundColor(Color.white)
+    }
+    ```
+
+
+3. Each view only needs to conform to the ScrollerContent protocol.
+    ```swift
+    struct ScrollerVContent: ScrollerContent {
+
+        /// Bind each view's scroll-relative value. It is a value between 0 and 1.
+        var value: CGFloat = 0
+
+        var body: some View {
+            GeometryReader { proxy in
+                ScrollerInfoView(axes: .vertical, value: value, proxy: proxy)
+                    .offset(y: proxy.size.height * value)
+                    .padding(10)
+                Rectangle().fill(Color.blue)
+                    .frame(width: proxy.size.width * value, height: 5)
+                    .offset(y: proxy.size.height * value)
+            }
+            .background(Color.orange.opacity(1.0 - value))
+        }
+    }
+    ```
+
+## Contact
+instagram : [@dev.fabula](https://www.instagram.com/dev.fabula)  
+email : [dev.fabula@gmail.com](mailto:dev.fabula@gmail.com)
+
+## License
+Scroller is available under the MIT license. See the [LICENSE](LICENSE) file for more info.