opentype.features.js/lib/opentype/src/layout.js

Library to list opentype fonts optional features.

"use strict";
// The Layout object is the prototype of Substitution objects, and provides
// utility methods to manipulate common layout tables (GPOS, GSUB, GDEF...)
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * @exports opentype.Layout
 * @class
 */
function Layout(font, tableName) {
    this.font = font;
    this.tableName = tableName;
}
Layout.prototype = {
    /**
     * Get or create the Layout table (GSUB, GPOS etc).
     * @param  {boolean} create - Whether to create a new one.
     * @return {Object} The GSUB or GPOS table.
     */
    getTable: function (create) {
        var layout = this.font.tables[this.tableName];
        if (!layout && create) {
            layout = this.font.tables[this.tableName] = this.createDefaultTable();
        }
        return layout;
    },
    /**
     * Returns the best bet for a script name.
     * Returns 'DFLT' if it exists.
     * If not, returns 'latn' if it exists.
     * If neither exist, returns undefined.
     */
    getDefaultScriptName: function () {
        var layout = this.getTable();
        if (!layout) {
            return;
        }
        var hasLatn = false;
        for (var i = 0; i < layout.scripts.length; i++) {
            var name_1 = layout.scripts[i].tag;
            if (name_1 === 'DFLT')
                return name_1;
            if (name_1 === 'latn')
                hasLatn = true;
        }
        if (hasLatn)
            return 'latn';
    },
};
exports.default = Layout;