79 lines
3.3 KiB
Svelte
79 lines
3.3 KiB
Svelte
<script>import { onMount } from "svelte";
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import { modeCurrent, setModeUserPrefers, setModeCurrent, setInitialClassState, getModeOsPrefers } from "./lightswitch.js";
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export let title = "Toggle light or dark mode.";
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export let bgLight = "bg-surface-50";
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export let bgDark = "bg-surface-900";
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export let fillLight = "fill-surface-50";
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export let fillDark = "fill-surface-900";
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export let width = "w-12";
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export let height = "h-6";
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export let ring = "ring-[1px] ring-surface-500/30";
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export let rounded = "rounded-token";
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const cTransition = `transition-all duration-[200ms]`;
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const cTrack = "cursor-pointer";
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const cThumb = "aspect-square scale-[0.8] flex justify-center items-center";
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const cIcon = "w-[70%] aspect-square";
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const svgPath = {
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sun: "M361.5 1.2c5 2.1 8.6 6.6 9.6 11.9L391 121l107.9 19.8c5.3 1 9.8 4.6 11.9 9.6s1.5 10.7-1.6 15.2L446.9 256l62.3 90.3c3.1 4.5 3.7 10.2 1.6 15.2s-6.6 8.6-11.9 9.6L391 391 371.1 498.9c-1 5.3-4.6 9.8-9.6 11.9s-10.7 1.5-15.2-1.6L256 446.9l-90.3 62.3c-4.5 3.1-10.2 3.7-15.2 1.6s-8.6-6.6-9.6-11.9L121 391 13.1 371.1c-5.3-1-9.8-4.6-11.9-9.6s-1.5-10.7 1.6-15.2L65.1 256 2.8 165.7c-3.1-4.5-3.7-10.2-1.6-15.2s6.6-8.6 11.9-9.6L121 121 140.9 13.1c1-5.3 4.6-9.8 9.6-11.9s10.7-1.5 15.2 1.6L256 65.1 346.3 2.8c4.5-3.1 10.2-3.7 15.2-1.6zM352 256c0 53-43 96-96 96s-96-43-96-96s43-96 96-96s96 43 96 96zm32 0c0-70.7-57.3-128-128-128s-128 57.3-128 128s57.3 128 128 128s128-57.3 128-128z",
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moon: "M223.5 32C100 32 0 132.3 0 256S100 480 223.5 480c60.6 0 115.5-24.2 155.8-63.4c5-4.9 6.3-12.5 3.1-18.7s-10.1-9.7-17-8.5c-9.8 1.7-19.8 2.6-30.1 2.6c-96.9 0-175.5-78.8-175.5-176c0-65.8 36-123.1 89.3-153.3c6.1-3.5 9.2-10.5 7.7-17.3s-7.3-11.9-14.3-12.5c-6.3-.5-12.6-.8-19-.8z"
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};
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function onToggleHandler() {
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$modeCurrent = !$modeCurrent;
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setModeUserPrefers($modeCurrent);
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setModeCurrent($modeCurrent);
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}
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function onKeyDown(event) {
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if (["Enter", "Space"].includes(event.code)) {
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event.preventDefault();
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event.currentTarget.click();
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}
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}
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onMount(() => {
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if (!("modeCurrent" in localStorage)) {
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setModeCurrent(getModeOsPrefers());
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}
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});
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$:
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trackBg = $modeCurrent === true ? bgLight : bgDark;
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$:
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thumbBg = $modeCurrent === true ? bgDark : bgLight;
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$:
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thumbPosition = $modeCurrent === true ? "translate-x-[100%]" : "";
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$:
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iconFill = $modeCurrent === true ? fillLight : fillDark;
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$:
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classesTrack = `${cTrack} ${cTransition} ${width} ${height} ${ring} ${rounded} ${trackBg} ${$$props.class ?? ""}`;
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$:
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classesThumb = `${cThumb} ${cTransition} ${height} ${rounded} ${thumbBg} ${thumbPosition}`;
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$:
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classesIcon = `${cIcon} ${iconFill}`;
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</script>
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<svelte:head>
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<!-- Workaround for a svelte parsing error: https://github.com/sveltejs/eslint-plugin-svelte/issues/492 -->
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{@html `<\u{73}cript nonce="%sveltekit.nonce%">(${setInitialClassState.toString()})();</script>`}
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</svelte:head>
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<div
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class="lightswitch-track {classesTrack}"
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on:click={onToggleHandler}
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on:click
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on:keydown={onKeyDown}
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on:keydown
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on:keyup
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on:keypress
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role="switch"
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aria-label="Light Switch"
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aria-checked={$modeCurrent}
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{title}
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tabindex="0"
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>
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<!-- Thumb -->
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<div class="lightswitch-thumb {classesThumb}">
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<!-- SVG -->
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<svg class="lightswitch-icon {classesIcon}" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
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<path d={$modeCurrent ? svgPath.sun : svgPath.moon} />
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</svg>
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</div>
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</div>
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