abcjs/src/write/helpers/get-font-and-attr.js

Renderer for abc music notation

var GetFontAndAttr = function GetFontAndAttr(formatting, classes) {
	this.formatting = formatting;
	this.classes = classes;
};

GetFontAndAttr.prototype.updateFonts = function (fontOverrides) {
	if (fontOverrides.gchordfont)
		this.formatting.gchordfont = fontOverrides.gchordfont;
	if (fontOverrides.tripletfont)
		this.formatting.tripletfont = fontOverrides.tripletfont;
	if (fontOverrides.annotationfont)
		this.formatting.annotationfont = fontOverrides.annotationfont;
	if (fontOverrides.vocalfont)
		this.formatting.vocalfont = fontOverrides.vocalfont;
};

GetFontAndAttr.prototype.calc = function (type, klass) {
	var font;
	if (typeof type === 'string') {
		font = this.formatting[type];
		// Raphael deliberately changes the font units to pixels for some reason, so we need to change points to pixels here.
		if (font)
			font = { face: font.face, size: Math.round(font.size * 4 / 3), decoration: font.decoration, style: font.style, weight: font.weight, box: font.box };
		else
			font = { face: "Arial", size: Math.round(12 * 4 / 3), decoration: "underline", style: "normal", weight: "normal" };
	} else
		font = { face: type.face, size: Math.round(type.size * 4 / 3), decoration: type.decoration, style: type.style, weight: type.weight, box: type.box };
	var paddingPercent = this.formatting.fontboxpadding ? this.formatting.fontboxpadding : 0.1
	font.padding = font.size * paddingPercent;

	var attr = {
		"font-size": font.size, 'font-style': font.style,
		"font-family": font.face, 'font-weight': font.weight, 'text-decoration': font.decoration,
		'class': this.classes.generate(klass)
	};
	return { font: font, attr: attr };
};

module.exports = GetFontAndAttr;