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use UIGraphicsImageRenderer process image to generate pdf file on iOS 17 or later #367

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wangzhizhou wants to merge 1 commit into from
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use UIGraphicsImageRenderer process image to generate pdf file on iOS 17 or later #367

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21 changes: 15 additions & 6 deletions Source/Internal/Graphics/PDFGraphics.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -183,12 +183,21 @@ internal enum PDFGraphics {
height: floor(frame.height * resizeFactor))

#if os(iOS)
UIGraphicsBeginImageContext(size)
image.draw(in: CGRect(origin: .zero, size: size))
let finalImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()

return finalImage ?? image
var finalImage: UIImage = image
if #available(iOS 17.0, *) {
if let cgImage = image.cgImage {
finalImage = UIGraphicsImageRenderer(size: size).image { renderContext in
let rect = CGRect(origin: .zero, size: size)
renderContext.cgContext.draw(image: cgImage, in: rect, flipped: true)
}
}
} else {
UIGraphicsBeginImageContext(size)
image.draw(in: CGRect(origin: .zero, size: size))
finalImage = UIGraphicsGetImageFromCurrentImageContext() ?? image
UIGraphicsEndImageContext()
}
return finalImage
#elseif os(macOS)
let finalImage = NSImage(size: size)
finalImage.lockFocus()
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