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SVG.Mask = function() {
this.constructor.call(this, SVG.create('mask'))
/* keep references to masked elements */
this.targets = []
}
// Inherit from SVG.Container
SVG.Mask.prototype = new SVG.Container
//
SVG.extend(SVG.Mask, {
// Unmask all masked elements and remove itself
remove: function() {
/* unmask all targets */
for (var i = this.targets.length - 1; i >= 0; i--)
if (this.targets[i])
this.targets[i].unmask()
delete this.targets
/* remove mask from parent */
this.parent.removeElement(this)
return this
}
})
//
SVG.extend(SVG.Element, {
// Distribute mask to svg element
maskWith: function(element) {
/* use given mask or create a new one */
this.masker = element instanceof SVG.Mask ? element : this.parent.mask().add(element)
/* store reverence on self in mask */
this.masker.targets.push(this)
/* apply mask */
return this.attr('mask', 'url(#' + this.masker.attr('id') + ')')
}
// Unmask element
, unmask: function() {
delete this.masker
return this.attr('mask', null)
}
})
//
SVG.extend(SVG.Container, {
// Create masking element
mask: function() {
return this.defs().put(new SVG.Mask)
}
})
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