// Math font variants.
export type FontVariant =
    | "bold"
    | "bold-italic"
    | "bold-sans-serif"
    | "double-struck"
    | "fraktur"
    | "italic"
    | "monospace"
    | "normal"
    | "sans-serif"
    | "sans-serif-bold-italic"
    | "sans-serif-italic"
    | "script";

export type FontName =
    | "AMS-Regular"
    | "Caligraphic-Regular"
    | "Fraktur-Regular"
    | "Main-Bold"
    | "Main-BoldItalic"
    | "Main-Italic"
    | "Main-Regular"
    | "Math-BoldItalic"
    | "Math-Italic"
    | "SansSerif-Regular"
    | "SansSerif-Bold"
    | "SansSerif-Italic"
    | "Script-Regular"
    | "Size1-Regular"
    | "Size2-Regular"
    | "Size3-Regular"
    | "Size4-Regular"
    | "Typewriter-Regular";

//[depth, height, italic, skew, width]
export type CharacterMetricsTuple = [depth: number, height: number, italic: number, skew: number, width: number];

export type CharacterMetrics = {
    depth: number;
    height: number;
    italic: number;
    skew: number;
    width: number;
};

export type FontMetrics = {
    cssEmPerMu: number;
    [key: string]: number;
};

export type SymbolFont = "main" | "ams";

export type MathFont =
    | ""
    | "mathrm"
    | "mathit"
    | "mathbf"
    | "mathnormal"
    | "mathsfit"
    | "mathbb"
    | "mathcal"
    | "mathfrak"
    | "mathscr"
    | "mathsf"
    | "mathtt"
    | "boldsymbol";

export type TextFont = "textrm" | "textsf" | "texttt" | "amsrm" | "";

// In these types, "" (empty string) means "no change".
export type FontWeight = "textbf" | "textmd" | "";
export type FontShape = "textit" | "textup" | "";