FilePreviews

SwiftUI file preview and thumbnail generator library

Uses Apple's QuickLook framework to generate thumbnails and previews for local files.

Installation

Swift Package Manager:

dependencies: [
    .package(url: "https://github.com/ntsh/FilePreviews.git", .upToNextMajor(from: "0.1.0"))
]

Usage

Preview file in full screen:

import FilePreviews

// Then somewhere in your swiftUI view
.fullScreenCover(isPresented: $showPreview) {
    PreviewController(url: fileURL, isPresented: $showPreview)
}

Create file Thumbnail:

See ThumbnailView.swift for an example:

public struct ThumbnailView: View {
    public let url: URL

    @EnvironmentObject var thumbnailGenerator: Thumbnailer
    @State var image: CGImage?

    public init(url: URL) {
        self.url = url
    }

    public var body: some View {
        Group {
            if let image {
                Image(image, scale: Screen.scale, label: Text(""))
                    .resizable()
                    .scaledToFit()
                    .aspectRatio(contentMode: .fill)
            } else {
                Image(systemName: "photo.fill")
                    .task {
                        image = await thumbnailGenerator.generateThumbnail(url)
                    }
            }
        }
    }
}

struct ThumbnailView_Preview: PreviewProvider {
    static var previews: some View {
        ThumbnailView(url: URL(fileURLWithPath: ""))
            .environmentObject(Thumbnailer())
    }
}