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SVG.Pattern = SVG.invent({
// Initialize node
create: 'pattern',
// Inherit from
inherit: SVG.Container,
// Add class methods
extend: {
// Return the fill id
url: function () {
return 'url(#' + this.id() + ')'
},
// Update pattern by rebuilding
update: function (block) {
// remove content
this.clear()
// invoke passed block
if (typeof block === 'function') {
block.call(this, this)
}
return this
},
// Alias string convertion to fill
toString: function () {
return this.url()
},
// custom attr to handle transform
attr: function (a, b, c) {
if (a === 'transform') a = 'patternTransform'
return SVG.Container.prototype.attr.call(this, a, b, c)
}
},
// Add parent method
construct: {
// Create pattern element in defs
pattern: function (width, height, block) {
return this.defs().pattern(width, height, block)
}
}
})
SVG.extend(SVG.Defs, {
// Define gradient
pattern: function (width, height, block) {
return this.put(new SVG.Pattern()).update(block).attr({
x: 0,
y: 0,
width: width,
height: height,
patternUnits: 'userSpaceOnUse'
})
}
})
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