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June 3, 2021 02:20
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Vue component for responsive images with Sanity CMS.
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<template> | |
<picture | |
v-if="devices === '3x'" | |
:role="role" | |
> | |
<source | |
v-for="(val, key, index) in sizes" | |
:key="index" | |
:media="`(min-width: ${val.media}em)`" | |
:srcset="` | |
${getSrcSet(val.width)} 1x, | |
${getSrcSet(val.width, 2)} 2x, | |
${getSrcSet(val.width, 3)} 3x | |
`"> | |
<img | |
:alt="alt" | |
:src="src" | |
> | |
</picture> | |
<picture | |
v-else | |
:role="role" | |
> | |
<source | |
v-for="(val, key, index) in sizes" | |
:key="index" | |
:media="`(min-width: ${val.media}em)`" | |
:srcset="` | |
${getSrcSet(val.width)} 1x, | |
${getSrcSet(val.width, 2)} 2x | |
`"> | |
<img | |
:alt="alt" | |
:src="src" | |
> | |
</picture> | |
</template> | |
<script> | |
import imageUrlBuilder from '@sanity/image-url'; | |
import sanity from '../sanity'; | |
const builder = imageUrlBuilder(sanity); | |
export default { | |
props: { | |
image: { | |
type: Object, | |
required: true, | |
}, | |
sizes: { | |
type: Object, | |
default() { | |
return { | |
s: { media: 0, width: 400 }, | |
m: { media: 48, width: 800 }, | |
l: { media: 64, width: 1200 }, | |
}; | |
}, | |
}, | |
alt: { | |
type: String, | |
default: 'Missing caption', | |
}, | |
role: { | |
type: String, | |
default: 'img', | |
}, | |
fit: { | |
type: String, | |
default: 'clip', | |
}, | |
quality: { | |
type: Number, | |
default: 82, | |
}, | |
w: { | |
type: Number, | |
default: undefined, | |
}, | |
h: { | |
type: Number, | |
default: undefined, | |
}, | |
format: { | |
type: String, | |
default: undefined, | |
}, | |
flipHorizontal: { | |
type: Boolean, | |
default: false, | |
}, | |
flipVertical: { | |
type: Boolean, | |
default: false, | |
}, | |
}, | |
computed: { | |
src() { | |
return builder | |
.image(this.image) | |
.width(this.w) | |
.height(this.h) | |
.quality(this.quality) | |
.fit(this.fit) | |
.format(this.format); | |
}, | |
}, | |
methods: { | |
getSrcSet(w, dpr = 1) { | |
if (!this.h) { | |
return builder | |
.image(this.image) | |
.width(w * dpr) | |
.quality(this.quality) | |
.fit(this.fit) | |
.format(this.format); | |
} | |
return builder | |
.image(this.image) | |
.width(w * dpr) | |
.height(this.getHeightFromWidth(w, this.getAspectRatio()) * dpr) | |
.quality(this.quality) | |
.fit(this.fit) | |
.format(this.format); | |
}, | |
getHeightFromWidth(w, h) { | |
return Math.floor(w * h); | |
}, | |
getAspectRatio() { | |
return this.h / this.w; | |
}, | |
}, | |
}; | |
</script> |
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