2013-01-28 18:03:27 -08:00
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/*
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* Paper.js - The Swiss Army Knife of Vector Graphics Scripting.
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* http://paperjs.org/
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*
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* Copyright (c) 2011 - 2013, Juerg Lehni & Jonathan Puckey
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* http://lehni.org/ & http://jonathanpuckey.com/
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*
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* Distributed under the MIT license. See LICENSE file for details.
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*
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* All rights reserved.
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*/
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2011-08-13 18:26:43 +02:00
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var fs = require('fs'),
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vm = require('vm'),
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2011-08-21 16:38:06 +02:00
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path = require('path'),
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2013-05-08 18:17:23 -07:00
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// Node Canvas library: https://github.com/learnboost/node-canvas
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2013-05-08 01:30:14 -07:00
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Canvas = require('canvas'),
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2013-05-08 18:17:23 -07:00
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jsdom = require('jsdom'),
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2013-05-08 20:18:46 -07:00
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domToHtml = require('jsdom/lib/jsdom/browser/domtohtml').domToHtml,
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2013-05-08 20:59:54 -07:00
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json = require('../../package.json');
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2011-08-13 18:26:43 +02:00
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2013-05-08 18:17:23 -07:00
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var options = {
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server: true,
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svg: true,
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parser: 'acorn',
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2013-05-08 20:18:17 -07:00
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// Use 'dev' for on-the fly compilation of separate files ,but update after.
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2013-05-08 18:17:23 -07:00
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version: 'dev'
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};
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2011-08-20 15:48:57 +02:00
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2013-05-09 00:22:20 -07:00
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// Create a document and a window using jsdom, e.g. for exportSVG()
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var doc = jsdom.jsdom("<html><body></body></html>"),
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win = doc.createWindow();
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2013-05-08 01:30:14 -07:00
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2013-05-08 20:18:46 -07:00
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// Define XMLSerializer.
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// TODO: Put this into a simple node module, with dependency on jsdom
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function XMLSerializer() {
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}
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XMLSerializer.prototype.serializeToString = function(node) {
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var text = domToHtml(node);
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// Fix a jsdom issue where linearGradient gets converted to lineargradient:
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// https://github.com/tmpvar/jsdom/issues/620
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return text.replace(/(linear|radial)(gradient)/g, function(all, type) {
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return type + 'Gradient';
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});
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};
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2013-05-09 00:22:20 -07:00
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function DOMParser() {
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}
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DOMParser.prototype.parseFromString = function(string, contenType) {
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var div = doc.createElement('div');
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div.innerHTML = string;
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return div.firstChild;
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};
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2011-08-13 18:26:43 +02:00
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// Create the context within which we will run the source files:
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var dirname = path.resolve(__dirname, '..');
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2011-08-13 18:26:43 +02:00
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var context = vm.createContext({
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// Used to load and run source files within the same context:
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2011-08-10 21:02:32 +02:00
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include: function(uri) {
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var source = fs.readFileSync(path.resolve(dirname, uri), 'utf8'),
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// For relative includes, we save the current directory and then
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// add the uri directory to dirname:
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prevDirname = dirname;
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dirname = path.resolve(dirname, path.dirname(uri));
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2011-08-13 18:26:43 +02:00
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vm.runInContext(source, context, uri);
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dirname = prevDirname;
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},
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// Expose core methods and values
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__dirname: dirname,
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require: require,
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options: options,
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// Expose node modules
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fs: fs,
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Canvas: Canvas,
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// Expose global browser variables:
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HTMLCanvasElement: Canvas,
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XMLSerializer: XMLSerializer,
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DOMParser: DOMParser,
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Image: Canvas.Image,
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window: win,
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document: doc,
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navigator: win.navigator,
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console: console
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2011-08-10 21:02:32 +02:00
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});
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2011-08-20 15:48:57 +02:00
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// Load Paper.js library files:
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2011-08-10 21:02:32 +02:00
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context.include('paper.js');
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2013-05-08 20:59:54 -07:00
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// Fix version now. Remove 2nd dot, so we can make a float out of it:
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options.version = parseFloat(json.version.replace(/(.)(\d)$/, '$2'));
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2011-08-10 21:02:32 +02:00
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2013-05-09 15:30:18 -07:00
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// Since the context used for Paper.js compilation, and the context in which
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// Node.js scripts are executed do not share the definition of Object, we need
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// to redefine Base.isPlainObject() here.
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// So instead of checking for Object.prototype, we're checking
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// proto.constructor.name for 'Object'
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2013-05-08 20:18:17 -07:00
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// TODO: Benchmark the speed and consider this implementation instead of the
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2013-05-09 15:30:18 -07:00
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// current one in straps.js too
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var Base = context.Base;
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Base.isPlainObject = function(obj) {
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var proto = obj !== null && typeof obj === 'object'
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&& Object.getPrototypeOf(obj);
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return proto && (proto.constructor.name === 'Object'
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|| proto === Base.prototype);
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};
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// Expose the Canvas, XMLSerializer to paper scopes:
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Base.each({
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Canvas: Canvas,
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XMLSerializer: XMLSerializer,
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DOMParser: DOMParser
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}, function(value, key) {
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this[key] = value;
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}, context.PaperScope.prototype);
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2011-08-10 21:02:32 +02:00
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2011-08-13 18:26:43 +02:00
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require.extensions['.pjs'] = function(module, uri) {
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var source = context.PaperScript.compile(fs.readFileSync(uri, 'utf8'));
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2013-05-08 20:38:23 -07:00
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// Temporarily override __dirname and __filename
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var envVars = 'var __dirname = \'' + path.dirname(uri) + '\';'
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+ 'var __filename = \'' + uri + '\';';
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vm.runInContext(envVars, context);
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2011-08-13 18:26:43 +02:00
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var scope = new context.PaperScope();
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context.PaperScript.evaluate(source, scope);
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module.exports = scope;
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};
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2013-05-07 22:07:12 -07:00
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module.exports = new context.PaperScope();
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