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miga-heygenandMiguel Ángel
7b5fdb1ad2
The generated catalog pages rendered the "Source" accordion title as a
JSX expression, `<Accordion title={`name.html`}>`. Mintlify's search
indexer stringifies expression attribute nodes rather than evaluating
them, so every one of the 399 catalog pages surfaced its Source section
in search results as "[object Object]" (visible on the Scroll Feed page,
among others).
The template literal carried no escaping benefit: every title is a
single-segment `name.html` path, and a double-quoted JSX string handles
it directly. Introduce `mdxStringAttribute`, which emits a plain
`name="value"` attribute and escapes `& " < { }` as HTML character
references (MDX decodes references inside quoted attribute values, and
unlike JSON.stringify it does not rely on backslash escapes, which JSX
strings do not honour). Use it for both the Source accordion title and
the preview iframe title, and regenerate the catalog pages.
Regenerated with `npx tsx scripts/generate-catalog-pages.ts`; the only
change across the 399 pages is the one Accordion title line each.
Co-authored-by: Miguel Ángel <miguel.sierra@heygen.com>
118 lines
3.6 KiB
Plaintext
118 lines
3.6 KiB
Plaintext
---
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title: "Grain Overlay"
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description: "Animated film grain texture overlay using CSS keyframes — adds warmth and analog character to any composition"
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---
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import { InstallCommand } from "/snippets/install-command.jsx";
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## Install
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<InstallCommand command="npx hyperframes add grain-overlay" item="grain-overlay" />
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That writes one file: `compositions/components/grain-overlay.html`.
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<iframe
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className="w-full aspect-video rounded-xl border-0 bg-zinc-100 dark:bg-zinc-800"
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title="grain-overlay preview"
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loading="lazy"
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srcDoc={`<!doctype html><html><head><meta charset="utf-8"><style>html,body{margin:0;height:100%;overflow:hidden;background:transparent}hyperframes-player{display:block;width:100%;height:100%}</style><script src="https://cdn.jsdelivr.net/npm/@hyperframes/player@latest/dist/hyperframes-player.global.js"><\/script></head><body><script>fetch("/public/catalog/components/grain-overlay.json").then(function(r){return r.json()}).then(function(d){var p=document.createElement("hyperframes-player");p.setAttribute("srcdoc",d.html);p.setAttribute("controls","");p.setAttribute("autoplay","");p.setAttribute("loop","");p.setAttribute("muted","");p.setAttribute("poster","https://static.heygen.ai/hyperframes-oss/docs/images/catalog/components/grain-overlay.png");document.body.appendChild(p)});<\/script></body></html>`}
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/>
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## Source
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<Accordion title="grain-overlay.html">
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```html
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<!--
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Grain Overlay — animated film grain texture.
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Usage: paste this snippet into your composition's HTML.
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The overlay covers the full viewport with pointer-events: none
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so it sits on top of all content without blocking interaction.
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Customize:
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- opacity: adjust .grain-texture opacity (default 0.15)
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- speed: change animation duration (default 0.5s)
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- texture: swap the background URL for a different pattern
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- z-index: adjust #grain-overlay z-index to layer correctly
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-->
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<div
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id="grain-overlay"
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style="
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position: absolute;
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top: 0;
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left: 0;
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width: 100%;
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height: 100%;
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pointer-events: none;
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z-index: 100;
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"
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>
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<div class="grain-texture"></div>
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</div>
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<style>
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@keyframes hf-grain-noise {
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0%,
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100% {
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transform: translate(0, 0);
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}
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10% {
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transform: translate(-5%, -5%);
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}
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20% {
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transform: translate(-10%, 5%);
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}
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30% {
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transform: translate(5%, -10%);
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}
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40% {
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transform: translate(-5%, 15%);
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}
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50% {
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transform: translate(-10%, 5%);
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}
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60% {
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transform: translate(15%, 0);
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}
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70% {
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transform: translate(0, 10%);
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}
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80% {
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transform: translate(-15%, 0);
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}
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90% {
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transform: translate(10%, 5%);
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}
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}
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#grain-overlay .grain-texture {
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position: absolute;
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top: -50%;
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left: -50%;
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width: 200%;
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height: 200%;
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background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
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opacity: 0.15;
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animation: hf-grain-noise 0.5s steps(1) infinite;
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}
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</style>
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```
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</Accordion>
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## Usage
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Open `compositions/components/grain-overlay.html` and paste its contents into your composition. See the comment header in the file for detailed instructions.
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{/* hf:generated-footer */}
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Tagged `texture` `grain` `overlay` `film`.
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## Related topics
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- [Browse the complete Catalog](/catalog)
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- [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
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- [Build a richer composition](/go-further)
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