Files
m3e-canvas/web/vendor/lib/theme.ts
T
pastilhasandClaude Fable 5 240d63940d vendor m3e-canvas 5c83ac6, with the import rewrite scripted
upstream imports through a @/ alias, and this platform already binds
@/* to src/apps/officer-web and @/components/* to its own shared
components — so an unrewritten import resolves to the WRONG module
rather than failing. the rewrite is mechanical and lives in
scripts/vendor.sh so a re-vendor produces a readable diff.

lib/ai.ts and AiPanel are vendored despite being unwanted: deleting them
meant editing vendored code, and Canvas.tsx references them throughout.
a faithful copy carrying an unused module beats a doctored one.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-09-05 12:00:17 +01:00

58 lines
2.2 KiB
TypeScript

"use client";
import { createContext, useContext } from "react";
import { DEFAULT_THEME, FONTS, FontKey, LANG_FONT, Theme } from "./tokens";
import type { Lang } from "./i18n";
/** The document theme, read by parts that render differently under it
* (emphasized type, motion scheme). Shape goes through the tokens helpers. */
export const ThemeContext = createContext<Theme>(DEFAULT_THEME);
export const useTheme = () => useContext(ThemeContext);
const loaded = new Set<FontKey>();
/** Fetch a Google font the first time it is chosen; the built-in faces need nothing.
* `onReady` fires once the face is usable, so measured widths can be refreshed. */
export function ensureFontLoaded(key: FontKey, onReady?: () => void) {
const f = FONTS.find((x) => x.key === key);
if (typeof document === "undefined") return;
const ready = () => document.fonts?.ready.then(() => onReady?.());
if (!f?.google || loaded.has(key)) {
ready();
return;
}
loaded.add(key);
const link = document.createElement("link");
link.rel = "stylesheet";
link.href = `https://fonts.googleapis.com/css2?family=${f.google}&display=swap`;
link.onload = () => {
/* the stylesheet is in, but the face itself downloads on first use: load it explicitly */
const face = f.family.split(",")[0].trim().replace(/^'|'$/g, "");
Promise.all([400, 500, 600, 700].map((w) => document.fonts.load(`${w} 16px "${face}"`))).then(ready, ready);
};
document.head.appendChild(link);
}
const loadedLangs = new Set<Lang>();
/** Fetch the Noto Sans face for a language the first time it is used. */
export function ensureLangFontLoaded(lang: Lang, onReady?: () => void) {
const f = LANG_FONT[lang];
if (typeof document === "undefined") return;
const ready = () => document.fonts?.ready.then(() => onReady?.());
if (!f || loadedLangs.has(lang)) {
ready();
return;
}
loadedLangs.add(lang);
const link = document.createElement("link");
link.rel = "stylesheet";
link.href = `https://fonts.googleapis.com/css2?family=${f.google}&display=swap`;
link.onload = () => {
const face = f.family.replace(/^'|'$/g, "");
Promise.all([400, 500, 600, 700].map((w) => document.fonts.load(`${w} 16px "${face}"`))).then(ready, ready);
};
document.head.appendChild(link);
}