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Add Glow component for creating glowing effects #300

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merged 1 commit into from
Mar 11, 2024
Merged

Add Glow component for creating glowing effects #300

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110 changes: 110 additions & 0 deletions src/components/Glow.astro
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Original file line number Diff line number Diff line change
@@ -0,0 +1,110 @@
---
import type { HTMLTag, Polymorphic } from "astro/types"

type Props<Tag extends HTMLTag> = Polymorphic<{
as: Tag
}>

const { as: Tag, class: className, ...props } = Astro.props
---

<Tag data-glow class:list={["glow-box", className]} {...props}>
<div data-glow></div><slot />
</Tag>

<script>
const syncPointer = ({ x, y }) => {
document.documentElement.style.setProperty("--x", x.toFixed(2))
document.documentElement.style.setProperty("--xp", (x / window.innerWidth).toFixed(2))
document.documentElement.style.setProperty("--y", y.toFixed(2))
document.documentElement.style.setProperty("--yp", (y / window.innerHeight).toFixed(2))
}
document.body.addEventListener("pointermove", syncPointer)
</script>
<style>
:root {
--backdrop: hsl(0 0% 60% / 0.12);
--border: 2;
--backup-border: var(--backdrop);
--size: 100;
}
.glow-box {
position: relative;
box-shadow: 0 1rem 2rem -1rem black;
backdrop-filter: blur(calc(var(--cardblur, 5) * 1px));
}
[data-glow] {
--border-size: calc(var(--border, 2) * 1px);
--spotlight-size: calc(var(--size, 150) * 1px);
--hue: calc(var(--base) + (var(--xp, 0) * var(--spread, 0)));
background-image: radial-gradient(
var(--spotlight-size) var(--spotlight-size) at calc(var(--x, 0) * 1px) calc(var(--y, 0) * 1px),
hsl(
var(--hue, 70) calc(var(--saturation, 100) * 1%) calc(var(--lightness, 50) * 1%) /
var(--bg-spot-opacity, 0.1)
),
transparent
);
background-color: var(--backdrop, transparent);
background-size: calc(100% + (2 * var(--border-size))) calc(100% + (2 * var(--border-size)));
background-position: 50% 50%;
background-attachment: fixed;
border: var(--border-size) solid var(--backup-border);
position: relative;
touch-action: none;
}
[data-glow]::before,
[data-glow]::after {
pointer-events: none;
content: "";
position: absolute;
inset: calc(var(--border-size) * -1);
border: var(--border-size) solid transparent;
background-attachment: fixed;
background-size: calc(100% + (2 * var(--border-size))) calc(100% + (2 * var(--border-size)));
background-repeat: no-repeat;
background-position: 50% 50%;
mask: linear-gradient(transparent, transparent), linear-gradient(white, white);
mask-clip: padding-box, border-box;
mask-composite: intersect;
}
[data-glow]::before {
background-image: radial-gradient(
calc(var(--spotlight-size) * 0.75) calc(var(--spotlight-size) * 0.75) at
calc(var(--x, 0) * 1px) calc(var(--y, 0) * 1px),
hsl(
var(--hue, 70) calc(var(--saturation, 100) * 100%) calc(var(--lightness, 70) * 1%) /
var(--border-spot-opacity, 1)
),
transparent 100%
);
filter: brightness(2);
}
[data-glow]::after {
background-image: radial-gradient(
calc(var(--spotlight-size) * 0.5) calc(var(--spotlight-size) * 0.5) at calc(var(--x, 0) * 1px)
calc(var(--y, 0) * 1px),
hsl(0 100% 100% / var(--border-light-opacity, 1)),
transparent 100%
);
}
[data-glow] [data-glow] {
position: absolute;
inset: 0;
will-change: filter;
opacity: var(--outer, 1);
}
[data-glow] > [data-glow] {
border-width: calc(var(--border-size) * 20);
filter: blur(calc(var(--border-size) * 10));
background: none;
pointer-events: none;
}
[data-glow] > [data-glow]::before {
inset: -10px;
border-width: 10px;
}
[data-glow] [data-glow] {
border: none;
}
</style>
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