nehan/dist/space-char.js

Html layout engine for paged-media written in Typescript

import { LogicalSize, SpaceCharTable, TextMeasure, } from "./public-api";
export class SpaceChar {
    constructor(str) {
        this.text = this.normalize(str);
        this.size = new LogicalSize({ measure: 0, extent: 0 });
        this.info = SpaceCharTable.load(str);
        this.kerning = false;
        this.spacing = 0;
        this.charCount = 0;
    }
    static charRefToStr(str) {
        switch (str) {
            case " ": return "\u00A0";
            case " ": return "\u2009";
            case " ": return "\u2002";
            case " ": return "\u2003";
        }
        throw new Error("invalid space char ref(" + str + ")");
    }
    normalize(str) {
        if (str.indexOf("&") === 0) {
            return SpaceChar.charRefToStr(str);
        }
        return str;
    }
    setMetrics(opts) {
        this.size = TextMeasure.getWordSize(opts.font, this.text);
        if (this.size.measure === 0) {
            this.size.measure = this.size.extent * this.info.advanceRate;
        }
    }
    toString() {
        return this.text;
    }
    isNoBreak() {
        return this.info.isNoBreak;
    }
    isZeroWidth() {
        return this.info.advanceRate === 0;
    }
    isCarriageReturn() {
        return this.text === "\u000D";
    }
    isLineFeed() {
        return this.text === "\u000A";
    }
    acceptEvaluator(visitor) {
        return visitor.visitSpaceChar(this);
    }
}
SpaceChar.zeroWidthSpace = "\u200B";
SpaceChar.enSpace = "\u2002";
SpaceChar.emSpace = "\u2003";
SpaceChar.noBreakSpace = "\u00A0";
SpaceChar.ideographicSpace = "\u3000";
SpaceChar.markerSpace = SpaceChar.enSpace;
//# sourceMappingURL=space-char.js.map