this repo has no description
Move light-dark toggle to reusable component
- Colours are set by component user
- last child margins selector is adjusted to ignore scripts/styles (as they can be added from the astro component (WHY NOT JUST HOIST IT OUTSIDE TEMPLATES PLEASE)
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src/components/generic/LightDarkToggle.astro
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src/components/generic/LightDarkToggle.astro
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---
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import Sun from "@/assets/sun.svg";
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import Moon from "@/assets/moon.svg";
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interface Props {
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colours: {
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bg: string;
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fg: string;
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};
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}
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const { colours } = Astro.props;
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---
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<button
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aria-label="toggle colour scheme"
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id="colour-toggle"
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style="visibility: hidden"
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>
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<Sun data-mode-light />
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<Moon data-mode-dark />
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</button>
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<style define:vars={colours}>
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#colour-toggle {
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background-color: var(--bg);
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border: none;
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border-radius: 50%;
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padding: 0.5rem;
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width: 3.4rem;
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height: 3.4rem;
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& svg {
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fill: var(--fg);
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stroke: var(--fg);
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}
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}
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</style>
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<script>
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const root = document.querySelector(":root");
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if (!(root instanceof HTMLElement)) throw new Error(":root is not html");
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const button = document.getElementById("colour-toggle");
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if (!button) throw new Error("No #colour-toggle element");
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const modeToggled = {
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light: document.querySelectorAll("[data-mode-light]"),
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dark: document.querySelectorAll("[data-mode-dark]"),
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};
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const cookies = document.cookie
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.split("; ")
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.reduce<
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Record<string, string>
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>((prev, cur) => ({ ...prev, [cur.split("=")[0]]: cur.split("=")[1] }), {});
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const mediaMode = matchMedia("(prefers-color-scheme: light)").matches;
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const cookieMode =
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cookies["colour-mode"] === "light"
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? true
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: cookies["colour-mode"] === "dark"
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? false
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: undefined;
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let lightMode = cookieMode ?? mediaMode;
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const updateColourScheme = () => {
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root.style.colorScheme = lightMode ? "light" : "dark";
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document.cookie = `colour-mode=${root.style.colorScheme};path=/`;
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modeToggled[lightMode ? "light" : "dark"].forEach((el) => {
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if (!(el instanceof SVGElement || el instanceof HTMLElement)) return;
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el.style.display = "block";
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});
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modeToggled[!lightMode ? "light" : "dark"].forEach((el) => {
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if (!(el instanceof SVGElement || el instanceof HTMLElement)) return;
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el.style.display = "none";
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});
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};
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updateColourScheme();
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button.addEventListener("click", () => {
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lightMode = !lightMode;
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updateColourScheme();
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});
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button.style.visibility = "visible";
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</script>
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src/pages/blog/[id].astro
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src/pages/blog/[id].astro
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---
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import Base from "@/Base.astro";
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import Nav from "@/components/generic/Nav.astro";
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import Sun from "@/assets/sun.svg";
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import Moon from "@/assets/moon.svg";
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import LightDarkToggle from "@/components/generic/LightDarkToggle.astro";
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import Copy from "@/assets/copy.svg";
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···
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<h1>{title}</h1>
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<button
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aria-label="toggle colour scheme"
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id="colour-toggle"
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style="visibility: hidden"
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>
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<Sun data-mode-light />
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<Moon data-mode-dark />
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</button>
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<LightDarkToggle
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colours={{ fg: "var(--bg-main)", bg: "var(--typo-body)" }}
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/>
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</header>
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<main style={`--accent: ${colour};`}>
···
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</div>
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</main>
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</Base>
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<script>
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const root = document.querySelector(":root");
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if (!(root instanceof HTMLElement)) throw new Error(":root is not html");
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const button = document.getElementById("colour-toggle");
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if (!button) throw new Error("No #colour-toggle element");
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const modeToggled = {
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light: document.querySelectorAll("[data-mode-light]"),
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dark: document.querySelectorAll("[data-mode-dark]"),
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};
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const cookies = document.cookie
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.split("; ")
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.reduce<
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Record<string, string>
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>((prev, cur) => ({ ...prev, [cur.split("=")[0]]: cur.split("=")[1] }), {});
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const mediaMode = matchMedia("(prefers-color-scheme: light)").matches;
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const cookieMode =
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cookies["colour-mode"] === "light"
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? true
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: cookies["colour-mode"] === "dark"
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? false
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: undefined;
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let lightMode = cookieMode ?? mediaMode;
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const updateColourScheme = () => {
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root.style.colorScheme = lightMode ? "light" : "dark";
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document.cookie = `colour-mode=${root.style.colorScheme};path=/`;
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modeToggled[lightMode ? "light" : "dark"].forEach((el) => {
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if (!(el instanceof SVGElement || el instanceof HTMLElement)) return;
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el.style.display = "block";
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});
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modeToggled[!lightMode ? "light" : "dark"].forEach((el) => {
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if (!(el instanceof SVGElement || el instanceof HTMLElement)) return;
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el.style.display = "none";
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});
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};
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updateColourScheme();
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button.addEventListener("click", () => {
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lightMode = !lightMode;
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updateColourScheme();
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});
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button.style.visibility = "visible";
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</script>
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<template id="code-heading">
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<!-- slots need to be set using set:html
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color: var(--typo-heading);
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padding-bottom: 0.5rem;
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& > :last-child {
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& > :global(:not(style, script):last-of-type) {
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margin-right: 1rem;
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margin-top: 0.5rem;
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}
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}
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#colour-toggle {
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background-color: var(--typo-body);
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border: none;
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border-radius: 50%;
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padding: 0.5rem;
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width: 3.4rem;
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height: 3.4rem;
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& svg {
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fill: var(--bg-main);
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stroke: var(--bg-main);
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}
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}
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