41 lines
1.1 KiB
JavaScript
41 lines
1.1 KiB
JavaScript
export function measureText(font, text) {
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let x = 0;
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for (let i = 0; i < text.length; i++) {
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if (font.chars[text[i]]) {
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const kerning = font.kernings[text[i]] && font.kernings[text[i]][text[i + 1]] ? font.kernings[text[i]][text[i + 1]] : 0;
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x += (font.chars[text[i]].xadvance || 0) + kerning;
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}
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}
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return x;
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}
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export function splitLines(font, text, maxWidth) {
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const words = text.replace(/[\r\n]+/g, " \n").split(" ");
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const lines = [];
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let currentLine = [];
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let longestLine = 0;
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words.forEach(word => {
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const line = [...currentLine, word].join(" ");
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const length = measureText(font, line);
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if (length <= maxWidth && !word.includes("\n")) {
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if (length > longestLine) {
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longestLine = length;
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}
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currentLine.push(word);
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} else {
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lines.push(currentLine);
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currentLine = [word.replace("\n", "")];
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}
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});
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lines.push(currentLine);
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return {
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lines,
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longestLine
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};
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}
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export function measureTextHeight(font, text, maxWidth) {
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const {
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lines
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} = splitLines(font, text, maxWidth);
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return lines.length * font.common.lineHeight;
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}
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//# sourceMappingURL=measure-text.js.map
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