SwiftyCrop - SwiftUI

🔭 Overview

SwiftyCrop allows users to seamlessly crop images within their SwiftUI applications. It provides a user-friendly interface that makes cropping an image as simple as selecting the desired area.

With SwiftyCrop, you can easily adjust the cropping area, maintain aspect ratio, zoom in and out for precise cropping. You can also specify the cropping mask to be a square or circle.

The following languages are supported & localized:

🇬🇧 English
🇩🇪 German
🇫🇷 French
🇮🇹 Italian
🇷🇺 Russian
🇪🇸 Spanish
🇹🇷 Turkish
🇺🇦 Ukrainian
🇭🇺 Hungarian
🇧🇷 Brazilian Portuguese
🇰🇷 Korean
🇯🇵 Japanese

The localization file can be found in Sources/SwiftyCrop/Resources.

🧳 Requirements

iOS 16.0 or later
Xcode 15.0 or later
Swift 5.9 or later

💻 Installation

There are two ways to use SwiftyCrop in your project:

using Swift Package Manager
manual install (embed Xcode Project)

Swift Package Manager

The Swift Package Manager is a tool for managing the distribution of Swift code. It’s integrated with the Swift build system to automate the process of downloading, compiling, and linking dependencies.

To integrate SwiftyCrop into your Xcode project using Xcode 15.0 or later, specify it in File > Swift Packages > Add Package Dependency...:

https://github.com/benedom/SwiftyCrop

Manually

If you prefer not to use any of dependency managers, you can integrate SwiftyCrop into your project manually. Put Sources/SwiftyCrop folder in your Xcode project. Make sure to enable Copy items if needed and Create groups.

📱 Demo App

To get a feeling how SwiftyCropView works you can run the demo app (thanks to @leoz).

🛠️ Usage

Quick Start

This example shows how to display SwiftyCropView in a full screen cover after an image has been set.

import SwiftUI
import SwiftyCrop

struct ExampleView: View {
    @State private var showImageCropper: Bool = false
    @State private var selectedImage: UIImage?

    var body: some View {
        VStack {
            /*
            Update `selectedImage` with the image you want to crop,
            e.g. after picking it from the library or downloading it.

            As soon as you have done this, toggle `showImageCropper`.
            
            Below is a sample implementation:
             */

             Button("Crop downloaded image") {
                Task {
                    selectedImage = await downloadExampleImage()
                    showImageCropper.toggle()
                }
             }

        }
        .fullScreenCover(isPresented: $showImageCropper) {
            if let selectedImage = selectedImage {
                SwiftyCropView(
                    imageToCrop: selectedImage,
                    maskShape: .square
                ) { croppedImage in
                    // Do something with the returned, cropped image
                }
            }
        }
    }

    // Example function for downloading an image
    private func downloadExampleImage() async -> UIImage? {
        let urlString = "https://picsum.photos/1000/1200"
        guard let url = URL(string: urlString),
              let (data, _) = try? await URLSession.shared.data(from: url),
              let image = UIImage(data: data)
        else { return nil }

        return image
    }
}

‼️ NOTE ‼️

If you want to display `SwiftyCrop` inside a sheet, use `NavigationView` instead of `NavigationStack` in case you want to wrap it.

SwiftyCrop supports two different mask shapes for cropping:

circle
square
rectangle

This is only the shape of the mask the user will see when cropping the image. The resulting, cropped image will always be a square by default when using circle or square. To get a circular cropped image, you can override this using a configuration.

You can also configure SwiftyCropView by passing a SwiftyCropConfiguration. A configuration has the following properties:

Property	Description
`maxMagnificationScale`	`CGFloat`: The maximum scale factor that the image can be magnified while cropping. Defaults to `4.0`.
`maskRadius`	`CGFloat`: The radius of the mask used for cropping. Defaults to `130`. A good way is to make it dependend on the screens size.
`cropImageCircular`	`Bool`: When using the cropping mask `circle`, whether the resulting image should also be masked as circle. Defaults to `false`.
`rotateImage`	`Bool`: Whether the image can be rotated when cropping using pinch gestures. Defaults to `false`.
`zoomSensitivity`	`CGFloat`: Zoom sensitivity when cropping. Increase to make zoom faster / less sensitive. Defaults to `1.0`.
`rectAspectRatio`	`CGFloat`: The aspect ratio to use when a rectangular mask shape is used. Defaults to `4:3`.
`texts`	`Texts`: Defines custom texts for the buttons and instructions. Defaults to using localized strings from resources.
`fonts`	`Fonts`: Defines custom fonts for the buttons and instructions. Defaults to using system font.
`colors`	`Colors`: Defines custom colors for the texts and background. Defaults to white text and black background.

Create a configuration like this:

let configuration = SwiftyCropConfiguration(
    maxMagnificationScale: 4.0,
    maskRadius: 130,
    cropImageCircular: false,
    rotateImage: true,
    zoomSensitivity: 1.0,
    rectAspectRatio: 4/3,
    texts: SwiftyCropConfiguration.Texts(
        cancelButton: "Cancel",
        interactionInstructions: "Custom instruction text",
        saveButton: "Save"
    ),
    fonts: SwiftyCropConfiguration.Fonts(
        cancelButton: Font.system(size: 12),
        interactionInstructions: Font.system(size: 14),
        saveButton: Font.system(size: 12)
    ),
    colors: SwiftyCropConfiguration.Colors(
        cancelButton: Color.red,
        interactionInstructions: Color.white,
        saveButton: Color.blue,
        background: Color.gray
    )
)

and use it like this:

.fullScreenCover(isPresented: $showImageCropper) {
            if let selectedImage = selectedImage {
                SwiftyCropView(
                    imageToCrop: selectedImage,
                    maskShape: .square,
                    // Use the configuration
                    configuration: configuration
                ) { croppedImage in
                    // Do something with the returned, cropped image
                }
            }
        }

👨‍💻 Contributors

All issue reports, feature requests, pull requests and GitHub stars are welcomed and much appreciated.

Thanks to @leoz for adding the circular crop mode, the demo app and the rotation functionality 🎉

Thanks to @kevin-hv for adding the hungarian localization 🇭🇺

Thanks to @Festanny for helping with the recangular cropping functionality 🎉

Thanks to @lipej for adding the brazilian portugese localization 🇧🇷🇵🇹

Thanks to @insub for adding the korean localization 🇰🇷

Thanks to @yhirano for adding the japanese localization 🇯🇵

Thanks to @yefimtsev for adding the ability to customize fonts and colors 🖼️

✍️ Author

Benedikt Betz

📃 License

SwiftyCrop is available under the MIT license. See the LICENSE file for more info.