File size: 1,359 Bytes
1e92f2d |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 |
/**
* A shared function, used on both client and server, to generate a SVG blur placeholder.
*/
export function getImageBlurSvg({
widthInt,
heightInt,
blurWidth,
blurHeight,
blurDataURL,
objectFit,
}: {
widthInt?: number
heightInt?: number
blurWidth?: number
blurHeight?: number
blurDataURL: string
objectFit?: string
}): string {
const std = 20
const svgWidth = blurWidth ? blurWidth * 40 : widthInt
const svgHeight = blurHeight ? blurHeight * 40 : heightInt
const viewBox =
svgWidth && svgHeight ? `viewBox='0 0 ${svgWidth} ${svgHeight}'` : ''
const preserveAspectRatio = viewBox
? 'none'
: objectFit === 'contain'
? 'xMidYMid'
: objectFit === 'cover'
? 'xMidYMid slice'
: 'none'
return `%3Csvg xmlns='http://www.w3.org/2000/svg' ${viewBox}%3E%3Cfilter id='b' color-interpolation-filters='sRGB'%3E%3CfeGaussianBlur stdDeviation='${std}'/%3E%3CfeColorMatrix values='1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 100 -1' result='s'/%3E%3CfeFlood x='0' y='0' width='100%25' height='100%25'/%3E%3CfeComposite operator='out' in='s'/%3E%3CfeComposite in2='SourceGraphic'/%3E%3CfeGaussianBlur stdDeviation='${std}'/%3E%3C/filter%3E%3Cimage width='100%25' height='100%25' x='0' y='0' preserveAspectRatio='${preserveAspectRatio}' style='filter: url(%23b);' href='${blurDataURL}'/%3E%3C/svg%3E`
}
|