36 lines
1.1 KiB
Swift
36 lines
1.1 KiB
Swift
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struct WebsiteImage {
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private let prefix1x: String
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private let prefix2x: String
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private let altText: String
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private let ext: String
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init(image: FeedEntryData.Image) {
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self.init(rawImagePath: image.rawImagePath,
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width: image.width,
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height: image.height,
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altText: image.altText)
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}
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init(rawImagePath: String, width: Int, height: Int, altText: String) {
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let (prefix, ext) = rawImagePath.fileNameAndExtension
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self.prefix1x = "\(prefix)@\(width)x\(height)"
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self.prefix2x = "\(prefix)@\(width*2)x\(height*2)"
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self.altText = altText.htmlEscaped()
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self.ext = ext ?? "jpg"
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}
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var content: String {
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var result = "<picture>"
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result += "<source type='image/avif' srcset='\(prefix1x).avif 1x, \(prefix2x).avif 2x'/>"
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result += "<source type='image/webp' srcset='\(prefix1x).webm 1x, \(prefix1x).webm 2x'/>"
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result += "<img srcset='\(prefix2x).\(ext) 2x' src='\(prefix1x).\(ext)' loading='lazy' alt='\(altText)'/>"
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result += "</picture>"
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return result
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}
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}
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