tianma-if
cd4f010d8f
Replace the abandoned RN iOS path with a SwiftUI app (iOS 17+) that reuses the shared TipTap editor bundle, GRDB local mirror/outbox, and Android-aligned shell chrome for list, create, detail, and Me. Package the editor HTML in the app resources so Markdown renders, present edit from the workspace root with a UIKit FAB, and keep caret stable while typing.
47 lines
1.9 KiB
Swift
47 lines
1.9 KiB
Swift
import Foundation
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import ImageIO
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import UniformTypeIdentifiers
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enum ImageCompressor {
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/// Max edge ~2560, JPEG quality ~0.82 — spirit of mobile-image-upload.ts
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static func compressIfNeeded(_ data: Data, maxEdge: CGFloat = 2560, quality: CGFloat = 0.82) -> (data: Data, mimeType: String, filename: String) {
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guard let source = CGImageSourceCreateWithData(data as CFData, nil),
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let cgImage = CGImageSourceCreateImageAtIndex(source, 0, nil)
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else {
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return (data, "application/octet-stream", "upload.bin")
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}
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let width = CGFloat(cgImage.width)
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let height = CGFloat(cgImage.height)
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let longest = max(width, height)
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let scale = longest > maxEdge ? maxEdge / longest : 1
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let targetSize = CGSize(width: floor(width * scale), height: floor(height * scale))
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let colorSpace = CGColorSpaceCreateDeviceRGB()
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guard let context = CGContext(
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data: nil,
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width: Int(targetSize.width),
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height: Int(targetSize.height),
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bitsPerComponent: 8,
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bytesPerRow: 0,
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space: colorSpace,
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bitmapInfo: CGImageAlphaInfo.premultipliedLast.rawValue
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) else {
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return (data, "image/jpeg", "image.jpg")
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}
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context.interpolationQuality = .high
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context.draw(cgImage, in: CGRect(origin: .zero, size: targetSize))
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guard let scaled = context.makeImage() else {
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return (data, "image/jpeg", "image.jpg")
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}
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let mutable = NSMutableData()
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guard let dest = CGImageDestinationCreateWithData(mutable, UTType.jpeg.identifier as CFString, 1, nil) else {
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return (data, "image/jpeg", "image.jpg")
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}
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CGImageDestinationAddImage(dest, scaled, [kCGImageDestinationLossyCompressionQuality: quality] as CFDictionary)
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CGImageDestinationFinalize(dest)
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return (mutable as Data, "image/jpeg", "image.jpg")
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}
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}
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