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// The main wrapping element
var SVG = this.SVG = function(element) {
if (SVG.supported) {
element = new SVG.Doc(element)
if(!SVG.parser.draw)
SVG.prepare()
return element
}
}
// Default namespaces
SVG.ns = 'http://www.w3.org/2000/svg'
SVG.xmlns = 'http://www.w3.org/2000/xmlns/'
SVG.xlink = 'http://www.w3.org/1999/xlink'
SVG.svgjs = 'http://svgjs.com/svgjs'
// Svg support test
SVG.supported = (function() {
return !! document.createElementNS &&
!! document.createElementNS(SVG.ns,'svg').createSVGRect
})()
// Don't bother to continue if SVG is not supported
if (!SVG.supported) return false
// Element id sequence
SVG.did = 1000
// Get next named element id
SVG.eid = function(name) {
return 'Svgjs' + capitalize(name) + (SVG.did++)
}
// Method for element creation
SVG.create = function(name) {
// create element
var element = document.createElementNS(this.ns, name)
// apply unique id
element.setAttribute('id', this.eid(name))
return element
}
// Method for extending objects
SVG.extend = function() {
var modules, methods, key, i
// Get list of modules
modules = [].slice.call(arguments)
// Get object with extensions
methods = modules.pop()
for (i = modules.length - 1; i >= 0; i--)
if (modules[i])
for (key in methods)
modules[i].prototype[key] = methods[key]
// Make sure SVG.Set inherits any newly added methods
if (SVG.Set && SVG.Set.inherit)
SVG.Set.inherit()
}
// Invent new element
SVG.invent = function(config) {
// Create element initializer
var initializer = typeof config.create == 'function' ?
config.create :
function() {
this.constructor.call(this, SVG.create(config.create))
}
// Inherit prototype
if (config.inherit)
initializer.prototype = new config.inherit
// Extend with methods
if (config.extend)
SVG.extend(initializer, config.extend)
// Attach construct method to parent
if (config.construct)
SVG.extend(config.parent || SVG.Container, config.construct)
return initializer
}
// Adopt existing svg elements
SVG.adopt = function(node) {
// check for presence of node
if (!node) return null
// make sure a node isn't already adopted
if (node.instance) return node.instance
// initialize variables
var element
// adopt with element-specific settings
if (node.nodeName == 'svg')
element = node.parentNode instanceof SVGElement ? new SVG.Nested : new SVG.Doc
else if (node.nodeName == 'linearGradient')
element = new SVG.Gradient('linear')
else if (node.nodeName == 'radialGradient')
element = new SVG.Gradient('radial')
else if (SVG[capitalize(node.nodeName)])
element = new SVG[capitalize(node.nodeName)]
else
element = new SVG.Element(node)
// ensure references
element.type = node.nodeName
element.node = node
node.instance = element
// SVG.Class specific preparations
if (element instanceof SVG.Doc)
element.namespace().defs()
// pull svgjs data from the dom (getAttributeNS doesn't work in html5)
element.setData(JSON.parse(node.getAttribute('svgjs:data')) || {})
return element
}
// Initialize parsing element
SVG.prepare = function() {
// Select document body and create invisible svg element
var body = document.getElementsByTagName('body')[0]
, draw = (body ? new SVG.Doc(body) : new SVG.Doc(document.documentElement).nested()).size(2, 0)
// Create parser object
SVG.parser = {
body: body || document.documentElement
, draw: draw.style('opacity:0;position:absolute;left:-100%;top:-100%;overflow:hidden')
, poly: draw.polyline().node
, path: draw.path().node
, native: SVG.create('svg')
}
}
SVG.parser = {
native: SVG.create('svg')
}
document.addEventListener('DOMContentLoaded', function() {
if(!SVG.parser.draw)
SVG.prepare()
}, false)
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