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Merge feaae5b622 into 6e655cdb24

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Sachintha Lakmin 2025-05-02 20:37:31 +05:30 • committed by GitHub
commit 0ffcd4a681
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4 changed files with 49 additions and 10 deletions
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43
packages/common/src/constants.ts
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@ -145,19 +145,58 @@ export const FONT_FAMILY = {
"Liberation Sans": 9,
};
// Segoe UI Emoji fails to properly fallback for some glyphs: ∞, ∫, ≠
// so we need to have generic font fallback before it
export const SERIF_GENERIC_FONT = "serif";
export const SANS_SERIF_GENERIC_FONT = "sans-serif";
export const MONOSPACE_GENERIC_FONT = "monospace";
export const FANTASY_GENERIC_FONT = "fantasy";
export const FONT_FAMILY_GENERIC_FALLBACKS = {
[SERIF_GENERIC_FONT]: 996,
[SANS_SERIF_GENERIC_FONT]: 997,
[MONOSPACE_GENERIC_FONT]: 998,
[FANTASY_GENERIC_FONT]: 999,
};
export const FONT_FAMILY_FALLBACKS = {
[CJK_HAND_DRAWN_FALLBACK_FONT]: 100,
...FONT_FAMILY_GENERIC_FALLBACKS,
[WINDOWS_EMOJI_FALLBACK_FONT]: 1000,
};
export function getGenericFontFamilyFallback(
fontFamily: number,
): keyof typeof FONT_FAMILY_GENERIC_FALLBACKS {
switch (fontFamily) {
case FONT_FAMILY.Excalifont:
return SERIF_GENERIC_FONT;
case FONT_FAMILY["Lilita One"]:
return FANTASY_GENERIC_FONT;
case FONT_FAMILY.Cascadia:
case FONT_FAMILY["Comic Shanns"]:
return MONOSPACE_GENERIC_FONT;
default:
return SANS_SERIF_GENERIC_FONT;
}
}
export const getFontFamilyFallbacks = (
fontFamily: number,
): Array<keyof typeof FONT_FAMILY_FALLBACKS> => {
const genericFallbackFont = getGenericFontFamilyFallback(fontFamily);
switch (fontFamily) {
case FONT_FAMILY.Excalifont:
return [CJK_HAND_DRAWN_FALLBACK_FONT, WINDOWS_EMOJI_FALLBACK_FONT];
return [
CJK_HAND_DRAWN_FALLBACK_FONT,
genericFallbackFont,
WINDOWS_EMOJI_FALLBACK_FONT,
];
default:
return [WINDOWS_EMOJI_FALLBACK_FONT];
return [genericFallbackFont, WINDOWS_EMOJI_FALLBACK_FONT];
}
};