5febb66873
- CI: replace Node/npm with Bun - Add view-transition animations for theme toggle - Set html background for flash-free theme switches - UI refinements to download button, brew command, and layout - Replace package-lock.json with bun.lock
80 lines
2.4 KiB
TypeScript
80 lines
2.4 KiB
TypeScript
"use client";
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import { useTheme } from "next-themes";
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import { useSyncExternalStore } from "react";
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import { flushSync } from "react-dom";
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const subscribe = () => () => {};
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const getSnapshot = () => true;
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const getServerSnapshot = () => false;
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export function ThemeToggle() {
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const { resolvedTheme, setTheme } = useTheme();
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const mounted = useSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
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const toggle = () => {
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const next = resolvedTheme === "dark" ? "light" : "dark";
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if (
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!document.startViewTransition ||
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window.matchMedia("(prefers-reduced-motion: reduce)").matches
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) {
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setTheme(next);
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return;
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}
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document.startViewTransition(() => {
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flushSync(() => {
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setTheme(next);
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});
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});
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};
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const isDark = mounted ? resolvedTheme === "dark" : true;
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return (
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<button
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onClick={toggle}
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className="inline-flex h-9 w-9 items-center justify-center text-muted hover:text-foreground transition-colors cursor-pointer"
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aria-label={isDark ? "Switch to light mode" : "Switch to dark mode"}
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>
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<ThemeIcon mounted={mounted} isDark={isDark} />
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</button>
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);
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}
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// Render a stable SVG subtree so theme flips don't unmount/mount icon nodes.
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export function ThemeIcon({ mounted, isDark }: { mounted: boolean; isDark: boolean }) {
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const base = "transition-opacity";
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const shown = "opacity-100";
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const hidden = "opacity-0";
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return (
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<svg
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width="16"
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height="16"
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viewBox="0 0 24 24"
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fill="none"
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stroke="currentColor"
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strokeWidth="1.5"
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strokeLinecap="round"
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strokeLinejoin="round"
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className={mounted ? shown : hidden}
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>
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<g data-icon="sun" className={`${base} ${isDark ? shown : hidden}`}>
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<circle cx="12" cy="12" r="5" />
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<line x1="12" y1="1" x2="12" y2="3" />
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<line x1="12" y1="21" x2="12" y2="23" />
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<line x1="4.22" y1="4.22" x2="5.64" y2="5.64" />
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<line x1="18.36" y1="18.36" x2="19.78" y2="19.78" />
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<line x1="1" y1="12" x2="3" y2="12" />
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<line x1="21" y1="12" x2="23" y2="12" />
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<line x1="4.22" y1="19.78" x2="5.64" y2="18.36" />
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<line x1="18.36" y1="5.64" x2="19.78" y2="4.22" />
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</g>
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<g data-icon="moon" className={`${base} ${isDark ? hidden : shown}`}>
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<path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z" />
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</g>
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</svg>
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);
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}
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