4bd181d3cc
* fix: update to latest sapper fixes #416 * fix error and debug pages * requestIdleCallback makes column switching feel way nicer than double rAF * add export feature * add better csp info * workaround for sapper sub-page issue * clarify in readme about exporting * fix now config * switch from rIC to triple raf * style-loader is no longer used * update theming guide
66 lines
1.5 KiB
HTML
66 lines
1.5 KiB
HTML
<img
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class={computedClass}
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aria-hidden={ariaHidden}
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{alt}
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{title}
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{width}
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{height}
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src={displaySrc}
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on:mouseover="onMouseOver(event)"
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ref:node
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/>
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<style>
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.non-autoplay-zoom-in {
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cursor: zoom-in;
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}
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.non-autoplay-zoom-in.is-link {
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cursor: pointer;
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}
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</style>
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<script>
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import { mouseover } from '../_utils/events'
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import { decodeImage } from '../_utils/decodeImage'
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import { classname } from '../_utils/classname'
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import { ONE_TRANSPARENT_PIXEL } from '../_static/media'
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export default {
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async oncreate () {
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let { currentSrc } = this.get()
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try {
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let image = new Image()
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image.src = currentSrc
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await decodeImage(image)
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this.set({ loaded: true })
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this.fire('imgLoad')
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} catch (e) {
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this.fire('imgLoadError', e)
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}
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},
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methods: {
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onMouseOver (mouseOver) {
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this.set({ mouseOver })
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}
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},
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events: {
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mouseover
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},
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data: () => ({
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alt: '',
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title: '',
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mouseOver: false,
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loaded: false,
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ariaHidden: false
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}),
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computed: {
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computedClass: ({ className, src, staticSrc, isLink }) => (classname(
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className,
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src !== staticSrc && 'non-autoplay-zoom-in',
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isLink && 'is-link'
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)),
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currentSrc: ({ mouseOver, src, staticSrc }) => mouseOver ? src : staticSrc,
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// using a transparent pixel as placeholder ensures broken images don't have wrong sizes
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displaySrc: ({ loaded, currentSrc }) => loaded ? currentSrc : ONE_TRANSPARENT_PIXEL
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}
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}
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</script>
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