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Helpers.jsx
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Helpers.jsx
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/**
* @author Astute Graphics <info@astutegraphics.com>
* @copyright 2018 Astute Graphics
* @version 1.0.0
* @url https://astutegraphics.com
* @url https://atomiclotus.net
*
* ABOUT:
*
* Helper functions for general use.
*
* CREDITS:
*
* This extension is based on the CEP Boilerplate extension by Scott Lewis
* at Atomic Lotus, LLC.
*
* NO WARRANTIES:
*
* You are free to use, modify, and distribute this script as you see fit.
* No credit is required but would be greatly appreciated.
*
* THIS SCRIPT IS OFFERED AS-IS WITHOUT ANY WARRANTY OR GUARANTEES OF ANY KIND.
* YOU USE THIS SCRIPT COMPLETELY AT YOUR OWN RISK AND UNDER NO CIRCUMSTANCES WILL
* THE DEVELOPER AND/OR DISTRIBUTOR OF THIS SCRIPT BE HELD LIABLE FOR DAMAGES OF
* ANY KIND INCLUDING LOSS OF DATA OR DAMAGE TO HARDWARE OR SOFTWARE. IF YOU DO
* NOT AGREE TO THESE TERMS, DO NOT USE THIS SCRIPT.
*/
/**
* Test if this class supports the Ai Object type. Before you can use
* this method, define an array in the global scope named `supportedTypes`.
* The underscore indicates the array is meant to be private.
* @param {string} theType
* @returns {boolean}
* @private
*/
function isSupported(theType) {
if (typeof(supportedTypes) == 'undefined') {
throw "You must create a global array named `supportedTypes` with the supported type names";
}
return supportedTypes.indexOf(theType.toLowerCase()) >= 0;
}
/**
* Check the type of an object.
* @param {*} theItem
* @param {string} theType
* @returns {boolean}
* @private
*/
function isType(theItem, theType) {
return strcmp(typeof(theItem), theType);
}
/**
* Check the typename of an AI Object.
* @param {*} theItem
* @param {string} theTypename
* @returns {boolean}
* @private
*/
function isTypename(theItem, theTypename) {
if (strcmp(theItem.typename, 'undefined')) return false;
return strcmp(theItem.typename, theTypename);
}
/**
* Get the typename of an object if it is set.
* @param {object} theItem
* @returns {string|null}
*/
function getTypename(theItem) {
if (isDefined(theItem.typename)) return theItem.typename;
return "undefined";
}
/**
* Is theItem an object?
* @param {*} theItem
* @returns {*}
* @private
*/
function isObject(theItem) {
return isType(theItem, 'object');
}
/**
* Is theItem a function?
* @param {*} theItem
* @returns {boolean}
* @private
*/
function isFunction(theItem) {
return isType(theItem, 'function');
}
/**
* Is theItem a string?
* @param {*} theItem
* @returns {boolean}
*/
function isString(theItem) {
return isType(theItem, 'string');
}
/**
* Is theItem a number?
* @param {*} theItem
* @returns {boolean}
*/
function isNumber(theItem) {
return ! isNaN(theItem);
}
/**
* Determine if a value is true-ish.
* USE ONLY with strings, ints, and booleans.
* @param what
* @returns {boolean}
*/
function isTrue(what) {
if (isTrue === true) return true;
if (isString(what)) {
var truish = [
'yes', 'oui', 'ja', 'da',
'si', 'yeah', 'yep', 'yup',
'fuck yes', 'fuck yeah', 'fuckin a',
'you know it', 'of course'
];
what = what.toLowerCase();
if (what === "true") return true;
if (truish.indexOf(what) != -1) return true;
}
if (! isNaN(what)) {
if (parseInt(what) > 0) return true;
}
return false;
}
/**
* Is theString an error (Starts with the word 'Error')?
* @param {string} theString
* @returns {boolean}
*/
function isErrorString(theString) {
return theString.substr(0, 5).toLowerCase() == 'error';
}
/**
* Is theItem a GroupItem?
* @param {*} theItem
* @returns {boolean}
* @private
*/
function isGroupItem(theItem) {
return isTypename(theItem, 'GroupItem');
}
/**
* Is theItem a PathItem?
* @param {*} theItem
* @returns {boolean}
* @private
*/
function isPathItem(theItem) {
return isTypename(theItem, 'PathItem');
}
/**
* Is theItem a CompoundPathItem?
* @param {GroupItem} theItem
* @returns {boolean}
* @private
*/
function isCompoundPathItem(theItem) {
return isTypename(theItem, 'CompoundPathItem');
}
/**
* Test if a value is defined.
* @param {string} property
* @returns {boolean}
* @private
*/
function isDefined(theItem) {
return typeof(theItem) != 'undefined';
}
/**
* If theItem is defined, return it, otherwise set it to theDefault value.
* @param {*} theItem
* @param {*) theDefault
* @returns {boolean|*}
*/
function isDefinedOr(theItem, theDefault) {
if (typeof(theItem) != 'undefined') {
return theItem;
}
return theDefault;
}
/**
* If theItem is not empty, return it, otherwise set it to theDefault value.
* @param {*} theItem
* @param {*) theDefault
* @returns {boolean|*}
*/
function isEmptyOr(theItem, theDefault) {
if (! isEmpty(theItem)) {
return theItem;
}
return theDefault;
}
/**
* Get the current timestamp.
* @returns {number}
* @private
*/
function now() {
return (new Date()).getTime();
}
/**
* Ensures a URL ends with a trailing slash.
* @param url
* @returns {*}
*/
function slash(url) {
if (url.charAt(url.length-1) != '/') {
url += '/';
}
return url;
};
/**
* Appends a string to a base string using a divider.
* @param {string} base
* @param {string} add
* @param {string} divider
* @returns {string}
*/
function concat(base, add, divider) {
if (base.charAt(base.length-1) != divider) {
base += divider;
}
return base + add;
}
/**
* Case-insensitive string comparison.
* @param {string} aText
* @param {string} bText
* @returns {boolean}
*/
function strcmp(aText, bText) {
return aText.toLowerCase() == bText.toLowerCase();
}
/**
* Trap function execution in a try/catch block.
* @param {function} func
* @returns {*}
*/
function trap(func, customError) {
try {
return func();
}
catch(e) {
return customError || e.message ;
}
}
/**
* Test of a variable is completely empty.
* @param {*} data
* @returns {boolean}
*/
function isEmpty(data) {
if (typeof(data) == 'number' || typeof(data) == 'boolean') {
return false;
}
if (typeof(data) == 'undefined' || data === null) {
return true;
}
if (typeof(data.length) != 'undefined') {
return data.length == 0;
}
var count = 0;
for (var i in data) {
if (data.hasOwnProperty(i)) count ++;
}
return count == 0;
}
/**
* Convert XML document to string.
* @param {XmlDocument} xmlData
* @returns {string}
*/
function xmlToString(xmlData) {
//IE
if (window.ActiveXObject){
return xmlData.xml;
}
// Everyone else.
return (new XMLSerializer()).serializeToString(xmlData);
}
/**
* Trim newline chars from a long string.
* @param {string} theText
* @returns {string}
*/
function trimNewLines(theText) {
return theText.replace(/\r?\n/g, "");
}
/**
* Remove empty group nodes from SVG.
* @param {XmlDocument} $svg
* @returns {XmlDocument}
*/
function removeEmptyNodes($svg) {
$("g", $svg).each(function(i) {
var $group = $(this);
if ($.trim($group.text()) == "") {
$group.remove();
}
});
return $svg;
}
/**
* Set the PathPoints in an AI PathItem from SVG path value.
* @param {PathItem} path
* @param {string} svg
*
* @author Malcolm McLean <malcolm@astutegraphics.co.uk>
*/
function setPathItemFromSVG(path, svg)
{
var i;
var pp;
var pointArray = svgToPathPointArray(svg);
while(path.pathPoints.length > 1)
{
path.pathPoints[0].remove();
}
path.pathPoints[0].anchor = pointArray[0].anchor;
path.pathPoints[0].leftDirection = pointArray[0].leftDirection;
path.pathPoints[0].rightDirection = pointArray[0].rightDirection;
for(i=1;i<pointArray.length;i++)
{
pp = path.pathPoints.add();
pp.anchor = pointArray[i].anchor;
pp.leftDirection = pointArray[i].leftDirection;
pp.rightDirection = pointArray[i].rightDirection;
pp.pointType = PointType.CORNER;
}
}
/**
* Copies path points from one path to another.
* @param targetPath
* @param sourcePath
*/
function copyPathPoints(targetPath, sourcePath) {
var i,
pp,
pointArray,
targetPPKey,
sourcePPKey;
targetPPKey = targetPath.selected ? "selectedPathPoints" : "pathPoints";
sourcePPKey = sourcePath.selected ? "selectedPathPoints" : "pathPoints";
while (targetPath[targetPPKey].length > 1) {
targetPath[targetPPKey][0].remove();
}
pointArray = sourcePath[sourcePPKey];
targetPath[targetPPKey][0].anchor = pointArray[0].anchor;
targetPath[targetPPKey][0].leftDirection = pointArray[0].leftDirection;
targetPath[targetPPKey][0].rightDirection = pointArray[0].rightDirection;
for(i=1; i < pointArray.length; i++) {
try {
pp = targetPath[targetPPKey].add();
pp.anchor = pointArray[i].anchor;
pp.leftDirection = pointArray[i].leftDirection;
pp.rightDirection = pointArray[i].rightDirection;
pp.pointType = PointType.CORNER;
}
catch(e) {
Utils.dump("[copyPathPoints()#targetPath[targetPPKey].add()] " + e.message);
}
}
}
/**
* Converts SVG Path value to cubic bezier points.
* @param {string} svg
* @returns {Array}
*
* @author Malcolm McLean <malcolm@astutegraphics.co.uk>
*/
function svgToPathPointArray(svg)
{
var result = [];
var splits = svg.split("C");
var i;
var point = {};
var start = splits[0].slice(1, splits[0].length);
var starts = start.split(",");
if(starts.length != 2)
{
return [];
}
point.anchor = [parseFloat(starts[0]), parseFloat(starts[1])];
result.push(point);
point = {};
for(i=1; i < splits.length;i++)
{
point = {};
segs = splits[i].split(",");
if(segs.length != 6)
{
return [];
}
result[i-1].rightDirection = [parseFloat(segs[0]), parseFloat(segs[1])];
point.leftDirection = [parseFloat(segs[2]), parseFloat(segs[3])];
point.anchor = [parseFloat(segs[4]), parseFloat(segs[5])];
result.push(point);
}
if(svg.indexOf("Z"))
{
result[0].leftDirection = point.leftDirection;
point = {};
if(result.length > 1)
{
result.pop();
}
}
for(i=0;i<result.length;i++)
{
result[i].anchor[0] *= 0.5;
result[i].anchor[1] *= 0.5;
result[i].leftDirection[0] *= 0.5;
result[i].leftDirection[1] *= 0.5;
result[i].rightDirection[0] *= 0.5;
result[i].rightDirection[1] *= 0.5;
}
return result;
}
/**
* Converts AI PathItem PathPoints to SVG path value.
* @param {PathItem} path
* @returns {*}
*
* @author Malcolm McLean <malcolm@astutegraphics.co.uk>
*/
function pathItemToSVG(path)
{
var i;
var answer = "";
var ppa;
var ppb;
if(path.pathPoints.length == 0)
return "";
answer = "M" + path.pathPoints[0].anchor[0].toFixed(2) + "," + path.pathPoints[0].anchor[1].toFixed(2);
for(i=0;i<path.pathPoints.length-1;i++)
{
ppa = path.pathPoints[i];
ppb = path.pathPoints[i+1];
answer += "C";
answer += ppa.rightDirection[0].toFixed(2);
answer += ",";
answer += ppa.rightDirection[1].toFixed(2);
answer += ",";
answer += ppb.leftDirection[0].toFixed(2);
answer += ",";
answer += ppb.leftDirection[1].toFixed(2);
answer += ",";
answer += ppb.anchor[0].toFixed(2);
answer += ",";
answer += ppb.anchor[1].toFixed(2);
}
if(path.closed)
{
ppa = path.pathPoints[path.pathPoints.length-1];
ppb = path.pathPoints[0];
answer += "C";
answer += ppa.rightDirection[0].toFixed(2);
answer += ",";
answer += ppa.rightDirection[1].toFixed(2);
answer += ",";
answer += ppb.leftDirection[0].toFixed(2);
answer += ",";
answer += ppb.leftDirection[1].toFixed(2);
answer += ",";
answer += ppb.anchor[0].toFixed(2);
answer += ",";
answer += ppb.anchor[1].toFixed(2);
answer += "Z";
}
return answer;
}