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fix(components): resolve gallery preview URLs against the site root #484

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Merged
schloerke merged 1 commit into from
Sep 24, 2026
Merged

fix(components): resolve gallery preview URLs against the site root #484

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17 changes: 14 additions & 3 deletions components/_partials/components-list.js
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Original file line number Diff line number Diff line change
Expand Up @@ -25,11 +25,22 @@ const gifDuration = (buffer) => {
return total;
};

// Quarto rewrites `src` to a relative path but leaves `data-*` site-root
// absolute, which misses the /py prefix in production. Resolve them against
// the site root Quarto records in every page.
const siteRoot = new URL(
document.querySelector('meta[name="quarto:offset"]')?.content ?? "./",
document.baseURI,
);
const fromSiteRoot = (path) => new URL(path.replace(/^\//, ""), siteRoot).href;

document.querySelectorAll(".component-list-card").forEach((card) => {
const image = card.querySelector(".component-list-preview");
const reducedMotion = window.matchMedia("(prefers-reduced-motion: reduce)");

if (!image) return;
const staticSrc = fromSiteRoot(image.dataset.staticSrc);
const animatedSrc = fromSiteRoot(image.dataset.animatedSrc);

// Fetch the GIF once, then give it a fresh blob URL on every hover: a new URL
// always plays from frame 0 (re-setting a cached GIF's src does not restart
Expand All @@ -54,7 +65,7 @@ document.querySelectorAll(".component-list-card").forEach((card) => {
};

const loadGif = () =>
(gif ??= fetch(image.dataset.animatedSrc)
(gif ??= fetch(animatedSrc)
.then((response) => (response.ok ? download(response) : Promise.reject()))
.then(async (blob) => {
const duration = gifDuration(await blob.arrayBuffer());
Expand All @@ -64,7 +75,7 @@ document.querySelectorAll(".component-list-card").forEach((card) => {

const showPoster = () => {
previewing = false;
image.src = image.dataset.staticSrc;
image.src = staticSrc;
card.classList.remove("is-previewing", "is-playing");
if (blobUrl) URL.revokeObjectURL(blobUrl);
blobUrl = undefined;
Expand Down Expand Up @@ -98,7 +109,7 @@ document.querySelectorAll(".component-list-card").forEach((card) => {
if (blobUrl && image.src === blobUrl) card.classList.add("is-playing");
});
image.addEventListener("error", () => {
if (image.src !== new URL(image.dataset.staticSrc, document.baseURI).href) {
if (image.src !== staticSrc) {
showPoster();
}
});
Expand Down
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