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function Wrap(e) {
this.constructor.call(this, SVG.create('g'));
// insert and store child
this.node.insertBefore(e.node, null);
this.child = e;
};
// inherit from SVG.Shape
Wrap.prototype = new SVG.Shape();
// include the container object
SVG.extend(Wrap, {
// move wrapper around
move: function(x, y) {
return this.center(
x + (this._b.width * this.child.trans.scaleX) / 2,
y + (this._b.height * this.child.trans.scaleY) / 2
);
},
// set the actual size in pixels
size: function(w, h) {
var s = w / this._b.width;
this.child.transform({
scaleX: s,
scaleY: h != null ? h / this._b.height : s
});
return this;
},
// move by center
center: function(x, y) {
return this.transform({ x: x, y: y });
},
// create distributed attr
attr: function(a, v, n) {
// call individual attributes if an object is given
if (typeof a == 'object') {
for (v in a) this.attr(v, a[v]);
// act as a getter if only one argument is given
} else if (arguments.length < 2) {
return a == 'transform' ? this.attrs[a] : this.child.attrs[a];
// apply locally for certain attributes
} else if (a == 'transform') {
this.attrs[a] = v;
n != null ?
this.node.setAttributeNS(n, a, v) :
this.node.setAttribute(a, v);
// apply attributes to child
} else {
this.child.attr(a, v, n);
}
return this;
},
// distribute plot method to child
plot: function(d) {
// plot new shape
this.child.plot(d);
// get new bbox and store size
this._b = this.child.bbox();
// reposition element withing wrapper
this.child.transform({
x: -this._b.cx,
y: -this._b.cy
});
return this;
}
});
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