node-webodf
Version:
WebODF - JavaScript Document Engine http://webodf.org/
80 lines (73 loc) • 2.38 kB
JavaScript
/**
* Copyright (C) 2012 KO GmbH <aditya.bhatt@kogmbh.com>
*
* @licstart
* This file is part of WebODF.
*
* WebODF is free software: you can redistribute it and/or modify it
* under the terms of the GNU Affero General Public License (GNU AGPL)
* as published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* WebODF is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with WebODF. If not, see <http://www.gnu.org/licenses/>.
* @licend
*
* @source: http://www.webodf.org/
* @source: https://github.com/kogmbh/WebODF/
*/
/*global core*/
/*jslint plusplus: true, bitwise: true */
/**
* @constructor
*/
core.CSSUnits = function CSSUnits() {
"use strict";
// Unit values relative to 1 inch
var self = this,
sizemap = {
"in": 1,
"cm": 2.54,
"mm": 25.4,
"pt": 72,
"pc": 12,
"px": 96
};
/**
* Takes a number of an oldUnit and returns its value in newUnit
* @param {!number} value
* @param {!string} oldUnit
* @param {!string} newUnit
* @return {!number}
*/
this.convert = function (value, oldUnit, newUnit) {
return value * sizemap[newUnit] / sizemap[oldUnit];
};
/**
* Takes a measure such as "2cm" and returns it's measurement in the new unit, e.g. 20
* @param {!string} measure
* @param {!string} newUnit
* @return {!number|undefined}
*/
this.convertMeasure = function (measure, newUnit) {
var value, oldUnit, newMeasure;
if (measure && newUnit) {
value = parseFloat(measure);
oldUnit = measure.replace(value.toString(), "");
newMeasure = self.convert(value, oldUnit, newUnit);
}
return newMeasure;
};
/**
* @param {!string} measure
* @return {!string}
*/
this.getUnits = function (measure) {
return measure.substr(measure.length - 2, measure.length);
};
};