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SVG.Element = SVG.invent({
// Initialize node
create: function(node) {
// make stroke value accessible dynamically
this._stroke = SVG.defaults.attrs.stroke
// create circular reference
if (this.node = node) {
this.type = node.nodeName
this.node.instance = this
// store current attribute value
this._stroke = node.getAttribute('stroke') || this._stroke
}
}
// Add class methods
, extend: {
// Move over x-axis
x: function(x) {
if (x != null) {
x = new SVG.Number(x)
x.value /= this.transform('scaleX')
}
return this.attr('x', x)
}
// Move over y-axis
, y: function(y) {
if (y != null) {
y = new SVG.Number(y)
y.value /= this.transform('scaleY')
}
return this.attr('y', y)
}
// Move by center over x-axis
, cx: function(x) {
return x == null ? this.x() + this.width() / 2 : this.x(x - this.width() / 2)
}
// Move by center over y-axis
, cy: function(y) {
return y == null ? this.y() + this.height() / 2 : this.y(y - this.height() / 2)
}
// Move element to given x and y values
, move: function(x, y) {
return this.x(x).y(y)
}
// Move element by its center
, center: function(x, y) {
return this.cx(x).cy(y)
}
// Set width of element
, width: function(width) {
return this.attr('width', width)
}
// Set height of element
, height: function(height) {
return this.attr('height', height)
}
// Set element size to given width and height
, size: function(width, height) {
var p = proportionalSize(this.bbox(), width, height)
return this
.width(new SVG.Number(p.width))
.height(new SVG.Number(p.height))
}
// Clone element
, clone: function() {
return assignNewId(this.node.cloneNode(true))
}
// Remove element
, remove: function() {
if (this.parent())
this.parent().removeElement(this)
return this
}
// Replace element
, replace: function(element) {
this.after(element).remove()
return element
}
// Add element to given container and return self
, addTo: function(parent) {
return parent.put(this)
}
// Add element to given container and return container
, putIn: function(parent) {
return parent.add(this)
}
// Get / set id
, id: function(id) {
return this.attr('id', id)
}
// Checks whether the given point inside the bounding box of the element
, inside: function(x, y) {
var box = this.bbox()
return x > box.x
&& y > box.y
&& x < box.x + box.width
&& y < box.y + box.height
}
// Show element
, show: function() {
return this.style('display', '')
}
// Hide element
, hide: function() {
return this.style('display', 'none')
}
// Is element visible?
, visible: function() {
return this.style('display') != 'none'
}
// Return id on string conversion
, toString: function() {
return this.attr('id')
}
// Return array of classes on the node
, classes: function() {
var attr = this.attr('class')
return attr == null ? [] : attr.trim().split(/\s+/)
}
// Return true if class exists on the node, false otherwise
, hasClass: function(name) {
return this.classes().indexOf(name) != -1
}
// Add class to the node
, addClass: function(name) {
if (!this.hasClass(name)) {
var array = this.classes()
array.push(name)
this.attr('class', array.join(' '))
}
return this
}
// Remove class from the node
, removeClass: function(name) {
if (this.hasClass(name)) {
this.attr('class', this.classes().filter(function(c) {
return c != name
}).join(' '))
}
return this
}
// Toggle the presence of a class on the node
, toggleClass: function(name) {
return this.hasClass(name) ? this.removeClass(name) : this.addClass(name)
}
// Get referenced element form attribute value
, reference: function(attr) {
return SVG.get(this.attr(attr))
}
// Returns the parent element instance
, parent: function(type) {
// Get parent element
var parent = SVG.adopt(this.node.parentNode)
// If a specific type is given, find a parent with that class
if (type)
while (!(parent instanceof type))
parent = SVG.adopt(parent.node.parentNode)
return parent
}
// Get parent document
, doc: function(type) {
return this.parent(type || SVG.Doc)
}
// Returns the svg node to call native svg methods on it
, native: function() {
return this.node
}
// Import raw svg
, svg: function(svg) {
// create temporary holder
var well = document.createElement('svg')
// act as a setter if svg is given
if (svg && this instanceof SVG.Parent) {
// dump raw svg
well.innerHTML = '<svg>' + svg.replace(/\n/, '').replace(/<(\w+)([^<]+?)\/>/g, '<$1$2></$1>') + '</svg>'
// transplant nodes
for (var i = 0, il = well.firstChild.childNodes.length; i < il; i++)
this.node.appendChild(well.firstChild.childNodes[i])
// otherwise act as a getter
} else {
// create a wrapping svg element in case of partial content
well.appendChild(svg = document.createElement('svg'))
// insert a copy of this node
svg.appendChild(this.node.cloneNode(true))
// return target element
return well.innerHTML.replace(/^<svg>/, '').replace(/<\/svg>$/, '')
}
return this
}
}
})
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