feat:Added piechart in Dashboard

node_modules/svg.js/src/mask.js

@@ -0,0 +1,58 @@
+SVG.Mask = SVG.invent({
+  // Initialize node
+  create: function() {
+    this.constructor.call(this, SVG.create('mask'))
+
+    // keep references to masked elements 
+    this.targets = []
+  }
+
+  // Inherit from
+, inherit: SVG.Container
+
+  // Add class methods
+, extend: {
+    // 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()
+      this.targets = []
+
+      // remove mask from parent
+      SVG.Element.prototype.remove.call(this)
+      
+      return this
+    }
+  }
+  
+  // Add parent method
+, construct: {
+    // Create masking element
+    mask: function() {
+      return this.defs().put(new SVG.Mask)
+    }
+  }
+})
+
+
+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)
+  }
+  
+})