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https://github.com/fatbobman/infinite4pager
Infinite4Pager is a flexible and powerful SwiftUI component that provides infinite scrolling capabilities in four directions: up, down, left, and right. It's perfect for creating image galleries, card decks, or any other content that requires seamless navigation in multiple directions.
https://github.com/fatbobman/infinite4pager
swiftui swiftui-components
Last synced: about 20 hours ago
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Infinite4Pager is a flexible and powerful SwiftUI component that provides infinite scrolling capabilities in four directions: up, down, left, and right. It's perfect for creating image galleries, card decks, or any other content that requires seamless navigation in multiple directions.
- Host: GitHub
- URL: https://github.com/fatbobman/infinite4pager
- Owner: fatbobman
- License: mit
- Created: 2024-07-08T12:27:52.000Z (6 months ago)
- Default Branch: main
- Last Pushed: 2024-07-17T09:13:42.000Z (5 months ago)
- Last Synced: 2024-12-23T20:12:30.260Z (about 20 hours ago)
- Topics: swiftui, swiftui-components
- Language: Swift
- Homepage:
- Size: 72.3 KB
- Stars: 108
- Watchers: 4
- Forks: 2
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Infinite4Pager
Infinite4Pager is a flexible and powerful SwiftUI component that provides infinite scrolling capabilities in four directions: up, down, left, and right. It's perfect for creating image galleries, card decks, or any other content that requires seamless navigation in multiple directions.
**Please read [Developing an Infinite Four-Direction Scrollable Pager with SwiftUI](https://fatbobman.com/en/posts/developing-an-infinite-four-direction-scrollable-pager-with-swiftui/) to understand the implementation principles of this library and for more usage notes.**
https://github.com/fatbobman/Infinite4Pager/assets/55673881/e98bd549-e639-46e7-9adf-b9e82b75b858
## Features
- Infinite scrolling in four directions
- Support for both finite and infinite page counts
- Customizable threshold ratios for page switching
- Smooth animations and gesture handling
- Adaptive to different screen sizes
- 100% SwiftUI
## Requirements
- iOS 17.0+
- Xcode 15.0+
- Swift 5.10+
## Installation
### Swift Package Manager
You can add Infinite4Pager to your project using Swift Package Manager. In Xcode, go to File > Swift Packages > Add Package Dependency and enter the repository URL:
https://github.com/fatbobman/Infinite4Pager.git
## Usage
Here's a basic example of how to use Infinite4Pager:
```swift
import SwiftUI
import Infinite4Pager
struct TestView: View {
var body: some View {
Infinite4Pager(
initialHorizontalPage: 2,
initialVerticalPage: 2,
totalHorizontalPage: 5,
totalVerticalPage: 5,
enableClipped: false,
enablePageVisibility: true,
getPage: { h, v in
PageView(h: h, v: v)
}
)
.ignoresSafeArea()
}
}
struct PageView: View {
let h: Int
let v: Int
let images = ["img1", "img2", "img3", "img4", "img5"]
@Environment(\.pagerCurrentPage) var mainPage
@State var percent: Double = 0
@State var isCurrent = false
var body: some View {
VStack {
let index = abs((h + v) % (images.count - 1))
Color.clear
.overlay(
Image(images[index])
.resizable()
.aspectRatio(contentMode: .fill)
.overlay(
VStack {
Text("\(h),\(v)")
Text("visibility \(percent)")
Text("isCurrent:\(isCurrent)")
}
.font(.largeTitle)
.foregroundStyle(.white)
.padding()
.background(
RoundedRectangle(cornerRadius: 15)
.foregroundColor(.black)
)
)
)
.onPageVisible { percent in
if let percent {
self.percent = percent
}
}
.task(id: mainPage) {
if let mainPage {
if mainPage.horizontal == h, mainPage.vertical == v {
isCurrent = true
}
}
}
.clipped()
}
}
}
```
For more advanced usage and customization options, please refer to the documentation.
## Customization
Infinite4Pager offers several customization options:
- `initialHorizontalPage` and `initialVerticalPage`: Set the starting page
- `totalHorizontalPage` and `totalVerticalPage`: Set the total number of pages (or `nil` for infinite scrolling)
- `horizontalThresholdRatio` and `verticalThresholdRatio`: Adjust the sensitivity of page switching
- `enableClipped` : enable clipped
- `animation` : page scroll animation
- `enablePageVisibility` : Whether to enable view visibility awareness. If false, onPageVisible will not respond.
## Page Visibility and Data Management
A view modifier similar to `onScrollVisibilityChange` that provides the view with the current proportion of the visible area.
```swift
PageView()
.onPageVisible { percent in
if percent > 0.1 {
// play video
}
}
```
The environment value pagerCurrentPage provides information about the current view within the container.
```swift
.task(id: mainPage) {
if let mainPage {
if mainPage.horizontal == h, mainPage.vertical == v {
// load data , enable animation
}
}
}
```
## Contributing
Contributions are welcome! Please feel free to submit a Pull Request.
## License
Infinite4Pager is available under the MIT license. See the LICENSE file for more info.