2020-11-08 10:22:02 +00:00
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import { Cloudinary, Configuration, Transformation } from 'cloudinary-core'
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let cl: Cloudinary | null = null
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export function initialize(options: Configuration.Options) {
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cl = Cloudinary.new(options)
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}
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type ElementOrString = Element | string
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const defaults: Transformation | Transformation.Options = {
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fetchFormat: 'auto',
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quality: 'auto:good',
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}
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function calculateApproxRealSize(size: string, step = 200) {
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const withRatio = (parseInt(size) * window.devicePixelRatio) | 0
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return withRatio - (withRatio % step) + step
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}
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function getSizeOfElement(el: Element) {
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const styles = window.getComputedStyle(el)
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return {
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width: calculateApproxRealSize(styles.width),
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height: calculateApproxRealSize(styles.height),
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}
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}
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function getSizeOfElementOrSelector(node: ElementOrString, elOrString: ElementOrString) {
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if (typeof elOrString === 'string') {
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const search = typeof node === 'string' ? window.document.querySelector(node) : node
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if (!search) throw new Error('Could not find element: ' + node)
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const closest = search.closest(elOrString)
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if (closest) return getSizeOfElement(closest)
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else throw new Error('Could not find element: ' + elOrString)
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} else {
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return getSizeOfElement(elOrString)
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}
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}
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2020-11-08 10:59:06 +00:00
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type BindType = ElementOrString | true
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type BindObject = BindType | { width?: BindType; height?: BindType }
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2020-11-08 10:45:55 +00:00
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2020-11-08 10:22:02 +00:00
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export type ImageParameters = {
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src: string
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options?: Transformation | Transformation.Options
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2020-11-08 10:59:06 +00:00
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bind?: BindObject
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2020-11-08 10:22:02 +00:00
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}
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export function image(node: HTMLImageElement, parameters?: ImageParameters) {
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if (!parameters) throw new Error('No url provided for cloudinary')
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let { src, options, bind } = parameters
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options = options || {}
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if (!cl) throw new Error('Cloudinary not initialized')
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if (!src) throw new Error('Src must be set in use:image')
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if (bind) {
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if (bind === true) {
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bind = node
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}
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2020-11-08 10:59:06 +00:00
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if (!options.crop) options.crop = 'fill'
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2020-11-08 10:22:02 +00:00
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if (bind instanceof Element) Object.assign(options, getSizeOfElement(bind))
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else if (typeof bind === 'string') {
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Object.assign(options, getSizeOfElementOrSelector(node, bind))
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} else if (typeof bind === 'object') {
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if (bind.width) {
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2020-11-08 10:59:06 +00:00
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options.width = getSizeOfElementOrSelector(node, bind.width === true ? node : bind.width).width
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2020-11-08 10:22:02 +00:00
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}
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if (bind.height) {
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2020-11-08 10:59:06 +00:00
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options.height = getSizeOfElementOrSelector(node, bind.height === true ? node : bind.height).height
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2020-11-08 10:22:02 +00:00
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}
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}
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}
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const all: Transformation | Transformation.Options = { ...defaults, ...options }
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const attrs: any = cl.imageTag(parameters.src, all).attributes()
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node.src = attrs.src
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}
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