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drizzli/src/routes/weather/maps/+page.svelte
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2026-07-19 23:14:59 +02:00

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Svelte

<script lang="ts">
import { onMount } from 'svelte';
import { storedLocation } from '$lib/stores/settings';
// a #zoom/lat/lng(/bearing/pitch) hash on OUR url is piped through to the
// map, so map positions can be bookmarked/shared via ombrella links
// (the reverse direction is not possible: the iframe is cross-origin, so
// its internal hash changes are unreadable from here)
let hashOverride = $state<string | null>(null);
onMount(() => {
const readHash = () => {
const hash = window.location.hash;
hashOverride = /^#\d+(\.\d+)?\/-?\d+(\.\d+)?\/-?\d+(\.\d+)?/.test(hash) ? hash : null;
};
readHash();
window.addEventListener('hashchange', readHash);
return () => window.removeEventListener('hashchange', readHash);
});
// the embedded map understands maplibre's #zoom/lat/lng hash, so the iframe
// opens focused on the selected location (zoomed out to regional scale);
// picking a new location while on this page recenters the map
const iframeSrc = $derived(
`https://maps.open-meteo.com/${
hashOverride ??
`#6/${$storedLocation.latitude.toFixed(3)}/${$storedLocation.longitude.toFixed(3)}`
}`
);
</script>
<svelte:head>
<title>Weather Map | Open-Meteo.com</title>
<link rel="canonical" href="https://open-meteo.com/weather/maps" />
<meta name="description" content="Interactive weather map powered by Open-Meteo" />
</svelte:head>
<!-- Full-bleed map: the layout drops its padding for this route. The map
follows our theme through the color-scheme declared on :root/.dark -->
<div class="h-full w-full bg-background">
<!-- allow="cross-origin-isolated" delegates SharedArrayBuffer use to the
map; it only takes effect when this site itself is served with
COOP/COEP headers (see README, Deployment) -->
<iframe
src={iframeSrc}
title="Open-Meteo Interactive Map"
loading="lazy"
allowfullscreen
allow="cross-origin-isolated"
referrerpolicy="no-referrer"
class="block h-full w-full border-0"
sandbox="allow-scripts allow-same-origin allow-forms allow-popups"
></iframe>
</div>