Claude
d4fd15dc20
Introduces expo-bluesky-context-menu, a compositional Root/Trigger/Menu/MenuItem wrapper around UIContextMenuInteraction. The preview ViewController is sized to the image's true aspect ratio so tall/panorama previews don't stretch mid-lift, and menu icons are rasterized from the app's SVG icon set on the native side. The preview prop is a discriminated union (image today; video and externalCard reserved) so the same module can back those embeds in follow-ups. https://claude.ai/code/session_015REmux3R9uuEMMJUHxTyQT
73 lines
2.5 KiB
Swift
73 lines
2.5 KiB
Swift
import UIKit
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/// Preview view controller shown during a peek. Renders a single image sized
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/// to the provided aspect ratio, capped to the screen bounds.
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///
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/// The aspect ratio drives `preferredContentSize` so iOS animates directly to
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/// the final size without the mid-flight stretch that happens when a mis-sized
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/// snapshot is scaled up.
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final class ImagePreviewController: UIViewController {
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private let imageURL: URL?
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private let aspectRatio: CGFloat
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init(imageURL: URL?, aspectRatio: CGFloat) {
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self.imageURL = imageURL
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self.aspectRatio = aspectRatio.isFinite && aspectRatio > 0 ? aspectRatio : 1
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super.init(nibName: nil, bundle: nil)
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self.preferredContentSize = Self.sizeForAspect(self.aspectRatio)
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}
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required init?(coder: NSCoder) { fatalError("init(coder:) not supported") }
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override func loadView() {
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let root = UIView()
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root.backgroundColor = .black
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root.clipsToBounds = true
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let imageView = UIImageView()
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imageView.contentMode = .scaleAspectFit
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imageView.translatesAutoresizingMaskIntoConstraints = false
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imageView.backgroundColor = .black
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root.addSubview(imageView)
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NSLayoutConstraint.activate([
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imageView.leadingAnchor.constraint(equalTo: root.leadingAnchor),
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imageView.trailingAnchor.constraint(equalTo: root.trailingAnchor),
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imageView.topAnchor.constraint(equalTo: root.topAnchor),
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imageView.bottomAnchor.constraint(equalTo: root.bottomAnchor),
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])
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self.view = root
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load(into: imageView)
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}
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private func load(into imageView: UIImageView) {
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guard let url = imageURL else { return }
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// Use URLSession + URLCache so we cooperate with Expo Image's HTTP cache.
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let request = URLRequest(url: url, cachePolicy: .returnCacheDataElseLoad, timeoutInterval: 10)
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if let cached = URLCache.shared.cachedResponse(for: request),
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let image = UIImage(data: cached.data) {
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imageView.image = image
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return
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}
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URLSession.shared.dataTask(with: request) { [weak imageView] data, _, _ in
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guard let data = data, let image = UIImage(data: data) else { return }
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DispatchQueue.main.async { imageView?.image = image }
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}.resume()
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}
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/// Caps the preview to a comfortable size within the current key window.
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private static func sizeForAspect(_ aspect: CGFloat) -> CGSize {
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let screen = UIScreen.main.bounds
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let maxW = screen.width - 32
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let maxH = screen.height * 0.7
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var w = maxW
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var h = w / aspect
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if h > maxH {
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h = maxH
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w = h * aspect
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}
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return CGSize(width: w, height: h)
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}
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}
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