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May 25, 2022 14:26
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Next Figure / Image – Kult
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import { urlFor } from "@lib/sanity" | |
import { getImageDimensions } from "@sanity/asset-utils" | |
import { | |
SanityImageObject, | |
SanityImageSource, | |
} from "@sanity/image-url/lib/types/types" | |
import Image from "next/image" | |
import { | |
SanityReference, | |
SanityImageAsset, | |
SanityImageCrop, | |
SanityImageHotspot, | |
} from "sanity-codegen" | |
export type UseNextSanityImageDimensions = { | |
width: number | |
height: number | |
aspectRatio: number | |
} | |
import { Figure, FlexibleImage } from "sanity-types/schema" | |
type IImage = { | |
_type: "image" | "figure" | "flexibleImage" | |
asset: SanityReference<SanityImageAsset> | |
crop?: SanityImageCrop | |
hotspot?: SanityImageHotspot | |
customRatio?: FlexibleImage["customRatio"] | |
} | |
export interface INextFigure { | |
image: FlexibleImage | Figure | |
width?: number | |
height?: number | |
className?: string | |
sizes?: string | |
captionClassName?: string | |
} | |
export function NextFigure({ | |
image, | |
width, | |
height, | |
className, | |
sizes, | |
captionClassName, | |
}: INextFigure) { | |
if (!image || !image?.asset) return null | |
const { caption, alt } = image | |
return ( | |
<> | |
<figure className={`${className}`}> | |
<NextImage | |
alt={alt} | |
image={image} | |
sizes={sizes} | |
width={width} | |
height={height} | |
/> | |
{caption && ( | |
<figcaption | |
className={`border-b border-gray text-sm py-1 ${ | |
captionClassName && captionClassName | |
}`} | |
> | |
{caption} | |
</figcaption> | |
)} | |
</figure> | |
</> | |
) | |
} | |
interface IINextImage { | |
image: IImage | any | |
width?: number | |
height?: number | |
alt?: string | |
sizes?: string | |
className?: string | |
layout?: "fixed" | "responsive" | "fill" | |
[x: string]: any | |
} | |
export function NextImage({ | |
image, | |
width, | |
height, | |
alt, | |
sizes = "(max-width: 500px) 50vw, 500px", | |
layout = "responsive", | |
...rest | |
}: IINextImage) { | |
if (!image || !image?.asset) return null | |
const base = image && getImageDimensions(image) | |
const realAlt = image?.alt ?? alt ?? "" | |
const cropped = getCroppedDimensions(image, base) | |
if ("customRatio" in image && image.customRatio !== "0") { | |
const { width: cWidth, height: cHeight } = getRatioDimension( | |
image.customRatio | |
) | |
const aspect = cHeight / cWidth | |
const blurHeight = Math.round(64 * aspect) | |
return ( | |
<Image | |
alt={realAlt} | |
placeholder="blur" | |
blurDataURL={ | |
urlFor(image) | |
.width(64) | |
.height(blurHeight) | |
.quality(30) | |
.blur(50) | |
.url() ?? "" | |
} | |
sizes={sizes} | |
layout={layout} | |
src={urlFor(image).width(cWidth).height(cHeight).url() ?? ""} | |
width={cWidth} | |
height={cHeight} | |
{...rest} | |
/> | |
) | |
} | |
if (width && height) { | |
const aspect = height / width | |
const blurHeight = Math.round(64 * aspect) | |
return ( | |
<Image | |
alt={realAlt} | |
placeholder="blur" | |
blurDataURL={ | |
urlFor(image) | |
.width(64) | |
.height(blurHeight) | |
.quality(30) | |
.blur(50) | |
.url() ?? "" | |
} | |
sizes={sizes} | |
layout={layout} | |
src={urlFor(image).width(width).height(height).url() ?? ""} | |
width={width} | |
height={height} | |
{...rest} | |
/> | |
) | |
} | |
// Auto format | |
return ( | |
<Image | |
alt={realAlt} | |
placeholder="blur" | |
sizes={sizes} | |
blurDataURL={urlFor(image).width(64).quality(30).blur(50).url() ?? ""} | |
layout={layout} | |
src={ | |
urlFor(image).width(cropped.width).height(cropped.height).url() ?? "" | |
} | |
width={cropped.width} | |
height={cropped.height} | |
{...rest} | |
/> | |
) | |
} | |
export function getRatioDimension(customRatio: FlexibleImage["customRatio"]) { | |
switch (customRatio) { | |
case "1": | |
return { width: 1000, height: 1000 } | |
case "medium": | |
return { width: 1500, height: 1100 } | |
case "horizontal": | |
return { width: 2600, height: 1000 } | |
case "vertical": | |
return { width: 1100, height: 1500 } | |
default: | |
return { width: 1000, height: 1000 } | |
} | |
} | |
export function getCroppedDimensions( | |
image: SanityImageSource, | |
baseDimensions: UseNextSanityImageDimensions | |
): UseNextSanityImageDimensions { | |
const crop = (image as SanityImageObject).crop | |
if (!crop) { | |
return baseDimensions | |
} | |
const { width, height } = baseDimensions | |
const croppedWidth = width * (1 - (crop.left + crop.right)) | |
const croppedHeight = height * (1 - (crop.top + crop.bottom)) | |
return { | |
width: Math.floor(croppedWidth), | |
height: Math.floor(croppedHeight), | |
aspectRatio: croppedWidth / croppedHeight, | |
} | |
} |
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