1 files changed, 84 insertions, 0 deletions
diff --git a/src/wrap.js b/src/wrap.js
new file mode 100644
index 0000000..4f785cd
--- /dev/null
+++ b/src/wrap.js
@@ -0,0 +1,84 @@
+
+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;
+  }
+  
+});
+\ No newline at end of file