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e27fa39620
- APIClient.uploadFile: multipart POST mit Bearer-Token, generischer field/filename/mime - ImageResize: längste Kante max 2048px, JPEG q=0.8 — iPhone-Fotos sonst 5-10MB pro Stück - FinishWalkSheet: - PhotosPicker (iOS 16+, kein NSPhotoLibraryUsageDescription nötig) - Thumbnail-Strip der gewählten Fotos - Sequentieller Upload nach POST /api/routes, Toolbar zeigt "N/M" - Bei < 50m: orangene Warnung "Sehr kurze Tour — du kannst trotzdem speichern" - Save-Button blockt korrekt während Upload, Verwerfen auch
31 lines
1.2 KiB
Swift
31 lines
1.2 KiB
Swift
import UIKit
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enum ImageResize {
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/// Resizes a JPEG/PNG so its longest edge is at most `maxDimension`,
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/// then re-encodes as JPEG with the given quality. Returns the original
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/// data if it can't be decoded.
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static func resizedJPEG(
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from data: Data,
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maxDimension: CGFloat = 2048,
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quality: CGFloat = 0.8
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) -> Data {
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guard let image = UIImage(data: data) else { return data }
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let longest = max(image.size.width, image.size.height)
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guard longest > maxDimension else {
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// already small enough — just re-encode to JPEG
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return image.jpegData(compressionQuality: quality) ?? data
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}
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let scale = maxDimension / longest
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let target = CGSize(width: image.size.width * scale, height: image.size.height * scale)
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let renderer = UIGraphicsImageRenderer(size: target, format: {
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let f = UIGraphicsImageRendererFormat.default()
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f.scale = 1
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f.opaque = true
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return f
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}())
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let resized = renderer.image { _ in
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image.draw(in: CGRect(origin: .zero, size: target))
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}
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return resized.jpegData(compressionQuality: quality) ?? data
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}
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}
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