Fixed naming conflict in mask and clip modules, bumped to v0.22

9 files changed, 277 insertions, 13 deletions

diff --git a/README.md b/README.md
index 9ab8704..288b651 100644
--- a/README.md
+++ b/README.md
@@ -785,12 +785,26 @@ var ellipse = draw.ellipse(80, 40).move(10, 10).fill({ color: gradient })
 rect.maskWith(ellipse)
 ```
 
-For your convenience, the masking element is also referenced in the masked element. This would be useful in case you want to change, or remove the mask:
+For your convenience, the masking element is also referenced in the masked element. This can be useful in case you want to change the mask:
 
 ```javascript
-rect.mask.remove()
+rect.masker.fill('#fff')
 ```
 
+Unmasking the elements can be done with the `unmask()` method:
+
+```javascript
+rect.unmask()
+```
+
+Removing the mask alltogether will also `unmask()` all masked elements:
+
+```javascript
+rect.masker.remove()
+```
+
+The `unmask()` method returns the masking element. So if you would like to remove the 
+
 _This functionality requires the mask.js module which is included in the default distribution._
 
 
@@ -803,6 +817,24 @@ var ellipse = draw.ellipse(80, 40).move(10, 10).fill({ color: '#fff' })
 rect.clipWith(ellipse)
 ```
 
+Similar to masking, the clipping element can be referenced in the clipped element:
+
+```javascript
+rect.clipper.move(20,30)
+```
+
+Unclipping the elements can be done with the `unclip()` method:
+
+```javascript
+rect.unclip()
+```
+
+Removing the clipPath alltogether will also `unclip()` all clipped elements:
+
+```javascript
+rect.clipper.remove()
+```
+
 _This functionality requires the clip.js module which is included in the default distribution._
 
 
diff --git a/Rakefile b/Rakefile
index ee9d277..216d8b6 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,4 +1,4 @@
-SVGJS_VERSION = '0.21'
+SVGJS_VERSION = '0.22'
 
 # all available modules in the correct loading order
 MODULES = %w[ svg regex default color number viewbox bbox rbox element container fx event defs group arrange mask clip pattern gradient doc shape rect ellipse line poly path plotable image text nested sugar ]
diff --git a/dist/svg.js b/dist/svg.js
index 4e13436..77ab5cd 100644
--- a/dist/svg.js
+++ b/dist/svg.js
@@ -1,4 +1,4 @@
-/* svg.js v0.21 - svg regex default color number viewbox bbox rbox element container fx event defs group arrange mask clip pattern gradient doc shape rect ellipse line poly path plotable image text nested sugar - svgjs.com/license */
+/* svg.js v0.22 - svg regex default color number viewbox bbox rbox element container fx event defs group arrange mask clip pattern gradient doc shape rect ellipse line poly path plotable image text nested sugar - svgjs.com/license */
 ;(function() {
 
   this.SVG = function(element) {
@@ -1518,19 +1518,48 @@
 
   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.mask = element instanceof SVG.Mask ? element : this.parent.mask().add(element)
+      this.masker = element instanceof SVG.Mask ? element : this.parent.mask().add(element)
+  
+      /* store reverence on self in mask */
+      this.masker.targets.push(this)
       
-      return this.attr('mask', 'url(#' + this.mask.attr('id') + ')')
+      /* apply mask */
+      return this.attr('mask', 'url(#' + this.masker.attr('id') + ')')
+    }
+    // Unmask element
+  , unmask: function() {
+      delete this.masker
+      return this.attr('mask', null)
     }
     
   })
@@ -1546,19 +1575,48 @@
 
   SVG.Clip = function() {
     this.constructor.call(this, SVG.create('clipPath'))
+  
+    /* keep references to clipped elements */
+    this.targets = []
   }
   
   // Inherit from SVG.Container
   SVG.Clip.prototype = new SVG.Container
   
   //
+  SVG.extend(SVG.Clip, {
+    // Unclip all clipped elements and remove itself
+    remove: function() {
+      /* unclip all targets */
+      for (var i = this.targets.length - 1; i >= 0; i--)
+        if (this.targets[i])
+          this.targets[i].unclip()
+      delete this.targets
+  
+      /* remove clipPath from parent */
+      this.parent.removeElement(this)
+      
+      return this
+    }
+  })
+  
+  //
   SVG.extend(SVG.Element, {
     // Distribute clipPath to svg element
     clipWith: function(element) {
       /* use given clip or create a new one */
-      this.clip = element instanceof SVG.Clip ? element : this.parent.clip().add(element)
+      this.clipper = element instanceof SVG.Clip ? element : this.parent.clip().add(element)
+  
+      /* store reverence on self in mask */
+      this.clipper.targets.push(this)
       
-      return this.attr('clip-path', 'url(#' + this.clip.attr('id') + ')')
+      /* apply mask */
+      return this.attr('clip-path', 'url(#' + this.clipper.attr('id') + ')')
+    }
+    // Unclip element
+  , unclip: function() {
+      delete this.clipper
+      return this.attr('clip-path', null)
     }
     
   })
diff --git a/dist/svg.min.js b/dist/svg.min.js
index df29cc4..3c64924 100644
--- a/dist/svg.min.js
+++ b/dist/svg.min.js
@@ -1 +1 @@
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\ No newline at end of file
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t?SVG.regex.isRgb.test(t)?(e=SVG.regex.rgb.exec(t.replace(/\s/g,"")),this.r=parseInt(e[1]),this.g=parseInt(e[2]),this.b=parseInt(e[3])):SVG.regex.isHex.test(t)&&(e=SVG.regex.hex.exec(this._fullHex(t)),this.r=parseInt(e[1],16),this.g=parseInt(e[2],16),this.b=parseInt(e[3],16)):"object"==typeof t&&(this.r=t.r,this.g=t.g,this.b=t.b)},SVG.extend(SVG.Color,{toString:function(){return this.toHex()},toHex:function(){return"#"+this._compToHex(this.r)+this._compToHex(this.g)+this._compToHex(this.b)},toRgb:function(){return"rgb("+[this.r,this.g,this.b].join()+")"},brightness:function(){return.3*(this.r/255)+.59*(this.g/255)+.11*(this.b/255)},_fullHex:function(t){return 4==t.length?["#",t.substring(1,2),t.substring(1,2),t.substring(2,3),t.substring(2,3),t.substring(3,4),t.substring(3,4)].join(""):t},_compToHex:function(t){var e=t.toString(16);return 1==e.length?"0"+e:e}}),SVG.Color.test=function(t){return t+="",SVG.regex.isHex.test(t)||SVG.regex.isRgb.test(t)},SVG.Color.isRgb=function(t){return 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e,i,n,s,r=t.bbox(),o=(t.attr("viewBox")||"").match(/-?[\d\.]+/g);this.x=r.x,this.y=r.y,this.width=t.node.offsetWidth||t.attr("width"),this.height=t.node.offsetHeight||t.attr("height"),o&&(e=parseFloat(o[0]),i=parseFloat(o[1]),n=parseFloat(o[2]),s=parseFloat(o[3]),this.zoom=this.width/this.height>n/s?this.height/s:this.width/n,this.x=e,this.y=i,this.width=n,this.height=s),this.zoom=this.zoom||1},SVG.extend(SVG.ViewBox,{toString:function(){return this.x+" "+this.y+" "+this.width+" "+this.height}}),SVG.BBox=function(t){var e;if(this.x=0,this.y=0,this.width=0,this.height=0,t){try{e=t.node.getBBox()}catch(i){e={x:t.node.clientLeft,y:t.node.clientTop,width:t.node.clientWidth,height:t.node.clientHeight}}this.x=e.x+t.trans.x,this.y=e.y+t.trans.y,this.width=e.width*t.trans.scaleX,this.height=e.height*t.trans.scaleY}this.cx=this.x+this.width/2,this.cy=this.y+this.height/2},SVG.extend(SVG.BBox,{merge:function(t){var e=new SVG.BBox;return e.x=Math.min(this.x,t.x),e.y=Math.min(this.y,t.y),e.width=Math.max(this.x+this.width,t.x+t.width)-e.x,e.height=Math.max(this.y+this.height,t.y+t.height)-e.y,e.cx=e.x+e.width/2,e.cy=e.y+e.height/2,e}}),SVG.RBox=function(t){var e,i,n={};if(this.x=0,this.y=0,this.width=0,this.height=0,t){for(e=t.doc().parent,i=t.doc().viewbox().zoom,n=t.node.getBoundingClientRect(),this.x=n.left,this.y=n.top,this.x-=e.offsetLeft,this.y-=e.offsetTop;e=e.offsetParent;)this.x-=e.offsetLeft,this.y-=e.offsetTop;for(e=t;e=e.parent;)"svg"==e.type&&e.viewbox&&(i*=e.viewbox().zoom,this.x-=e.x()||0,this.y-=e.y()||0)}this.x/=i,this.y/=i,this.width=n.width/=i,this.height=n.height/=i,this.cx=this.x+this.width/2,this.cy=this.y+this.height/2},SVG.Element=function(t){this._stroke=SVG.defaults.attrs.stroke,this.styles={},this.trans=SVG.defaults.trans(),(this.node=t)&&(this.type=t.nodeName,this.node.instance=this)},SVG.extend(SVG.Element,{x:function(t){return t&&(t=new SVG.Number(t),t.value/=this.trans.scaleX),this.attr("x",t)},y:function(t){return t&&(t=new SVG.Number(t),t.value/=this.trans.scaleY),this.attr("y",t)},cx:function(t){return null==t?this.bbox().cx:this.x(t-this.bbox().width/2)},cy:function(t){return null==t?this.bbox().cy:this.y(t-this.bbox().height/2)},move:function(t,e){return this.x(t).y(e)},center:function(t,e){return this.cx(t).cy(e)},size:function(t,e){return this.attr({width:new SVG.Number(t),height:new SVG.Number(e)})},clone:function(){var t,e,i=this.type;return t="rect"==i||"ellipse"==i?this.parent[i](0,0):"line"==i?this.parent[i](0,0,0,0):"image"==i?this.parent[i](this.src):"text"==i?this.parent[i](this.content):"path"==i?this.parent[i](this.attr("d")):"polyline"==i||"polygon"==i?this.parent[i](this.attr("points")):"g"==i?this.parent.group():this.parent[i](),e=this.attr(),delete e.id,t.attr(e),t.trans=this.trans,t.transform({})},remove:function(){return this.parent&&this.parent.removeElement(this),this},doc:function(t){return this._parent(t||SVG.Doc)},attr:function(t,e,i){if(null==t){for(t={},e=this.node.attributes,i=e.length-1;i>=0;i--)t[e[i].nodeName]=SVG.regex.test(e[i].nodeValue,"isNumber")?parseFloat(e[i].nodeValue):e[i].nodeValue;return t}if("object"==typeof t)for(e in t)this.attr(e,t[e]);else if(null===e)this.node.removeAttribute(t);else{if(null==e)return this._isStyle(t)?"text"==t?this.content:"leading"==t&&this.leading?this.leading():this.style(t):(e=this.node.getAttribute(t),null==e?SVG.defaults.attrs[t]:SVG.regex.test(e,"isNumber")?parseFloat(e):e);if("style"==t)return this.style(e);if("function"==typeof e.fill&&(e=e.fill()),"x"==t&&Array.isArray(this.lines))for(i=this.lines.length-1;i>=0;i--)this.lines[i].attr(t,e);"stroke-width"==t?this.attr("stroke",parseFloat(e)>0?this._stroke:null):"stroke"==t&&(this._stroke=e),(SVG.Color.test(e)||SVG.Color.isRgb(e))&&(e=new SVG.Color(e).toHex()),null!=i?this.node.setAttributeNS(i,t,e):this.node.setAttribute(t,e),this._isStyle(t)&&("text"==t?this.text(e):"leading"==t&&this.leading?this.leading(e):this.style(t,e),this.rebuild&&this.rebuild(t,e))}return this},transform:function(t,e){if(0==arguments.length)return this.trans;if("string"==typeof t){if(arguments.length<2)return this.trans[t];var i={};return i[t]=e,this.transform(i)}var i=[];t=this._parseMatrix(t);for(e in t)null!=t[e]&&(this.trans[e]=t[e]);return this.trans.matrix=this.trans.a+","+this.trans.b+","+this.trans.c+","+this.trans.d+","+this.trans.e+","+this.trans.f,t=this.trans,t.matrix!=SVG.defaults.matrix&&i.push("matrix("+t.matrix+")"),0!=t.rotation&&i.push("rotate("+t.rotation+","+(null==t.cx?this.bbox().cx:t.cx)+","+(null==t.cy?this.bbox().cy:t.cy)+")"),(1!=t.scaleX||1!=t.scaleY)&&i.push("scale("+t.scaleX+","+t.scaleY+")"),0!=t.skewX&&i.push("skewX("+t.skewX+")"),0!=t.skewY&&i.push("skewY("+t.skewY+")"),(0!=t.x||0!=t.y)&&i.push("translate("+t.x/t.scaleX+","+t.y/t.scaleY+")"),this._offset&&i.push("translate("+-this._offset.x+","+-this._offset.y+")"),0==i.length?this.node.removeAttribute("transform"):this.node.setAttribute("transform",i.join(" ")),this},style:function(t,e){if(0==arguments.length)return this.attr("style")||"";if(arguments.length<2)if("object"==typeof t)for(e in t)this.style(e,t[e]);else{if(!SVG.regex.isCss.test(t))return this.styles[t];t=t.split(";");for(var i=0;i<t.length;i++)e=t[i].split(":"),2==e.length&&this.style(e[0].replace(/\s+/g,""),e[1].replace(/^\s+/,"").replace(/\s+$/,""))}else null===e||SVG.regex.test(e,"isBlank")?delete this.styles[t]:this.styles[t]=e;t="";for(e in this.styles)t+=e+":"+this.styles[e]+";";return""==t?this.node.removeAttribute("style"):this.node.setAttribute("style",t),this},data:function(t,e,i){if(arguments.length<2)try{return JSON.parse(this.attr("data-"+t))}catch(n){return this.attr("data-"+t)}else this.attr("data-"+t,null===e?null:i===!0||"string"==typeof e||"number"==typeof e?e:JSON.stringify(e));return this},bbox:function(){return new SVG.BBox(this)},rbox:function(){return new SVG.RBox(this)},inside:function(t,e){var i=this.bbox();return t>i.x&&e>i.y&&t<i.x+i.width&&e<i.y+i.height},show:function(){return this.style("display","")},hide:function(){return this.style("display","none")},visible:function(){return"none"!=this.style("display")},_parent:function(t){for(var e=this;null!=e&&!(e instanceof t);)e=e.parent;return e},_isStyle:function(t){return"string"==typeof t?SVG.regex.test(t,"isStyle"):!1},_parseMatrix:function(t){if(t.matrix){var e=t.matrix.replace(/\s/g,"").split(",");6==e.length&&(t.a=parseFloat(e[0]),t.b=parseFloat(e[1]),t.c=parseFloat(e[2]),t.d=parseFloat(e[3]),t.e=parseFloat(e[4]),t.f=parseFloat(e[5]))}return t}}),SVG.Container=function(t){this.constructor.call(this,t)},SVG.Container.prototype=new SVG.Element,SVG.extend(SVG.Container,{children:function(){return this._children||(this._children=[])},add:function(t,e){if(!this.has(t)){if(e=null==e?this.children().length:e,t.parent){var i=t.parent.children().indexOf(t);t.parent.children().splice(i,1)}this.children().splice(e,0,t),this.node.insertBefore(t.node,this.node.childNodes[e]||null),t.parent=this}return this._defs&&(this.node.removeChild(this._defs.node),this.node.appendChild(this._defs.node)),this},put:function(t,e){return this.add(t,e),t},has:function(t){return this.children().indexOf(t)>=0},get:function(t){return this.children()[t]},each:function(t,e){var i,n,s=this.children();for(i=0,n=s.length;n>i;i++)s[i]instanceof SVG.Element&&t.apply(s[i],[i,s]),e&&s[i]instanceof SVG.Container&&s[i].each(t,e);return this},removeElement:function(t){var e=this.children().indexOf(t);return this.children().splice(e,1),this.node.removeChild(t.node),t.parent=null,this},defs:function(){return this.doc().defs()},first:function(){return this.children()[0]instanceof SVG.Defs?this.children()[1]:this.children()[0]},last:function(){return this.children()[this.children().length-1]},viewbox:function(t){return 0==arguments.length?new SVG.ViewBox(this):(t=1==arguments.length?[t.x,t.y,t.width,t.height]:[].slice.call(arguments),this.attr("viewBox",t.join(" ")))},clear:function(){for(var t=this.children().length-1;t>=0;t--)this.removeElement(this.children()[t]);return this._defs&&this._defs.clear(),this}}),SVG.FX=function(t){this.target=t},SVG.extend(SVG.FX,{animate:function(t,e,i){var n,s,r,o,h=this.target,a=this;return"object"==typeof t&&(i=t.delay,e=t.ease,t=t.duration),t=null==t?1e3:t,e=e||"<>",a.to=function(t){var i;if(t=0>t?0:t>1?1:t,null==n){n=[];for(o in a.attrs)n.push(o)}if(null==s){s=[];for(o in a.trans)s.push(o)}if(null==r){r=[];for(o in a.styles)r.push(o)}for(t="<>"==e?-Math.cos(t*Math.PI)/2+.5:">"==e?Math.sin(t*Math.PI/2):"<"==e?-Math.cos(t*Math.PI/2)+1:"-"==e?t:"function"==typeof e?e(t):t,a._x?h.x(a._at(a._x,t)):a._cx&&h.cx(a._at(a._cx,t)),a._y?h.y(a._at(a._y,t)):a._cy&&h.cy(a._at(a._cy,t)),a._size&&h.size(a._at(a._size.width,t),a._at(a._size.height,t)),a._viewbox&&h.viewbox(a._at(a._viewbox.x,t),a._at(a._viewbox.y,t),a._at(a._viewbox.width,t),a._at(a._viewbox.height,t)),i=n.length-1;i>=0;i--)h.attr(n[i],a._at(a.attrs[n[i]],t));for(i=s.length-1;i>=0;i--)h.transform(s[i],a._at(a.trans[s[i]],t));for(i=r.length-1;i>=0;i--)h.style(r[i],a._at(a.styles[r[i]],t));a._during&&a._during.call(h,t,function(e,i){return a._at({from:e,to:i},t)})},"number"==typeof t&&(this.timeout=setTimeout(function(){var e=1e3/60,i=(new Date).getTime(),n=i+t;a.interval=setInterval(function(){var e=(new Date).getTime(),s=e>n?1:(e-i)/t;a.to(s),e>n&&(clearInterval(a.interval),a._after?a._after.apply(h,[a]):a.stop())},t>e?e:t)},i||0)),this},bbox:function(){return this.target.bbox()},attr:function(t,e){if("object"==typeof t)for(var i in t)this.attr(i,t[i]);else this.attrs[t]={from:this.target.attr(t),to:e};return this},transform:function(t,e){if(1==arguments.length){t=this.target._parseMatrix(t),delete t.matrix;for(e in t)this.trans[e]={from:this.target.trans[e],to:t[e]}}else{var i={};i[t]=e,this.transform(i)}return this},style:function(t,e){if("object"==typeof t)for(var i in t)this.style(i,t[i]);else this.styles[t]={from:this.target.style(t),to:e};return this},x:function(t){return this._x={from:this.target.x(),to:t},this},y:function(t){return this._y={from:this.target.y(),to:t},this},cx:function(t){return this._cx={from:this.target.cx(),to:t},this},cy:function(t){return this._cy={from:this.target.cy(),to:t},this},move:function(t,e){return this.x(t).y(e)},center:function(t,e){return this.cx(t).cy(e)},size:function(t,e){if(this.target instanceof SVG.Text)this.attr("font-size",t);else{var i=this.target.bbox();this._size={width:{from:i.width,to:t},height:{from:i.height,to:e}}}return this},viewbox:function(t,e,i,n){if(this.target instanceof SVG.Container){var s=this.target.viewbox();this._viewbox={x:{from:s.x,to:t},y:{from:s.y,to:e},width:{from:s.width,to:i},height:{from:s.height,to:n}}}return this},update:function(t){return this.target instanceof SVG.Stop&&(null!=t.opacity&&this.attr("stop-opacity",t.opacity),null!=t.color&&this.attr("stop-color",t.color),null!=t.offset&&this.attr("offset",new SVG.Number(t.offset))),this},during:function(t){return this._during=t,this},after:function(t){return this._after=t,this},stop:function(){return clearTimeout(this.timeout),clearInterval(this.interval),this.attrs={},this.trans={},this.styles={},delete this._x,delete this._y,delete this._cx,delete this._cy,delete this._size,delete this._after,delete this._during,delete this._viewbox,this},_at:function(t,e){return"number"==typeof t.from?t.from+(t.to-t.from)*e:SVG.regex.unit.test(t.to)?new SVG.Number(t.to).minus(new SVG.Number(t.from)).times(e).plus(new SVG.Number(t.from)):t.to&&(t.to.r||SVG.Color.test(t.to))?this._color(t,e):1>e?t.from:t.to},_color:function(t,e){var i,n;return e=0>e?0:e>1?1:e,i=new SVG.Color(t.from),n=new SVG.Color(t.to),new SVG.Color({r:~~(i.r+(n.r-i.r)*e),g:~~(i.g+(n.g-i.g)*e),b:~~(i.b+(n.b-i.b)*e)}).toHex()}}),SVG.extend(SVG.Element,{animate:function(t,e,i){return(this.fx||(this.fx=new SVG.FX(this))).stop().animate(t,e,i)},stop:function(){return this.fx&&this.fx.stop(),this}}),["click","dblclick","mousedown","mouseup","mouseover","mouseout","mousemove","mouseenter","mouseleave","touchstart","touchend","touchmove","touchcancel"].forEach(function(t){SVG.Element.prototype[t]=function(e){var i=this;return this.node["on"+t]="function"==typeof e?function(){return e.apply(i,arguments)}:null,this}}),SVG.on=function(t,e,i){t.addEventListener?t.addEventListener(e,i,!1):t.attachEvent("on"+e,i)},SVG.off=function(t,e,i){t.removeEventListener?t.removeEventListener(e,i,!1):t.detachEvent("on"+e,i)},SVG.extend(SVG.Element,{on:function(t,e){return SVG.on(this.node,t,e),this},off:function(t,e){return SVG.off(this.node,t,e),this}}),SVG.Defs=function(){this.constructor.call(this,SVG.create("defs"))},SVG.Defs.prototype=new SVG.Container,SVG.G=function(){this.constructor.call(this,SVG.create("g"))},SVG.G.prototype=new SVG.Container,SVG.extend(SVG.G,{x:function(t){return null==t?this.trans.x:this.transform("x",t)},y:function(t){return null==t?this.trans.y:this.transform("y",t)}}),SVG.extend(SVG.Container,{group:function(){return this.put(new SVG.G)}}),SVG.extend(SVG.Element,{siblings:function(){return this.parent.children()},position:function(){var t=this.siblings();return t.indexOf(this)},next:function(){return this.siblings()[this.position()+1]},previous:function(){return this.siblings()[this.position()-1]},forward:function(){var t=this.position();return this.parent.removeElement(this).put(this,t+1)},backward:function(){var t=this.position();return t>0&&this.parent.removeElement(this).add(this,t-1),this},front:function(){return this.parent.removeElement(this).put(this)},back:function(){return this.position()>1&&this.parent.removeElement(this).add(this,0),this},before:function(t){t.remove();var e=this.position();return this.parent.add(t,e),this},after:function(t){t.remove();var e=this.position();return this.parent.add(t,e+1),this}}),SVG.Mask=function(){this.constructor.call(this,SVG.create("mask")),this.targets=[]},SVG.Mask.prototype=new SVG.Container,SVG.extend(SVG.Mask,{remove:function(){for(var t=this.targets.length-1;t>=0;t--)this.targets[t]&&this.targets[t].unmask();return delete this.targets,this.parent.removeElement(this),this}}),SVG.extend(SVG.Element,{maskWith:function(t){return this.masker=t instanceof SVG.Mask?t:this.parent.mask().add(t),this.masker.targets.push(this),this.attr("mask","url(#"+this.masker.attr("id")+")")},unmask:function(){return delete this.masker,this.attr("mask",null)}}),SVG.extend(SVG.Container,{mask:function(){return this.defs().put(new SVG.Mask)}}),SVG.Clip=function(){this.constructor.call(this,SVG.create("clipPath")),this.targets=[]},SVG.Clip.prototype=new SVG.Container,SVG.extend(SVG.Clip,{remove:function(){for(var t=this.targets.length-1;t>=0;t--)this.targets[t]&&this.targets[t].unclip();return delete this.targets,this.parent.removeElement(this),this}}),SVG.extend(SVG.Element,{clipWith:function(t){return this.clipper=t instanceof SVG.Clip?t:this.parent.clip().add(t),this.clipper.targets.push(this),this.attr("clip-path","url(#"+this.clipper.attr("id")+")")},unclip:function(){return delete this.clipper,this.attr("clip-path",null)}}),SVG.extend(SVG.Container,{clip:function(){return this.defs().put(new SVG.Clip)}}),SVG.Pattern=function(){this.constructor.call(this,SVG.create("pattern"))},SVG.Pattern.prototype=new SVG.Container,SVG.extend(SVG.Pattern,{fill:function(){return"url(#"+this.attr("id")+")"}}),SVG.extend(SVG.Defs,{pattern:function(t,e,i){var n=this.put(new SVG.Pattern);return i(n),n.attr({x:0,y:0,width:t,height:e,patternUnits:"userSpaceOnUse"})}}),SVG.extend(SVG.Container,{pattern:function(t,e,i){return this.defs().pattern(t,e,i)}}),SVG.Gradient=function(t){this.constructor.call(this,SVG.create(t+"Gradient")),this.type=t},SVG.Gradient.prototype=new SVG.Container,SVG.extend(SVG.Gradient,{from:function(t,e){return"radial"==this.type?this.attr({fx:new SVG.Number(t),fy:new SVG.Number(e)}):this.attr({x1:new SVG.Number(t),y1:new SVG.Number(e)})},to:function(t,e){return"radial"==this.type?this.attr({cx:new SVG.Number(t),cy:new SVG.Number(e)}):this.attr({x2:new SVG.Number(t),y2:new SVG.Number(e)})},radius:function(t){return"radial"==this.type?this.attr({r:new SVG.Number(t)}):this},at:function(t){return this.put(new SVG.Stop(t))},update:function(t){return this.clear(),t(this),this},fill:function(){return"url(#"+this.attr("id")+")"}}),SVG.extend(SVG.Defs,{gradient:function(t,e){var i=this.put(new SVG.Gradient(t));return e(i),i}}),SVG.extend(SVG.Container,{gradient:function(t,e){return this.defs().gradient(t,e)}}),SVG.Stop=function(t){this.constructor.call(this,SVG.create("stop")),this.update(t)},SVG.Stop.prototype=new SVG.Element,SVG.extend(SVG.Stop,{update:function(t){return null!=t.opacity&&this.attr("stop-opacity",t.opacity),null!=t.color&&this.attr("stop-color",t.color),null!=t.offset&&this.attr("offset",new SVG.Number(t.offset)),this}}),SVG.Doc=function(t){this.parent="string"==typeof t?document.getElementById(t):t,this.constructor.call(this,"svg"==this.parent.nodeName?this.parent:SVG.create("svg")),this.attr({xmlns:SVG.ns,version:"1.1",width:"100%",height:"100%"}).attr("xlink",SVG.xlink,SVG.ns),this._defs=new SVG.Defs,this.node.appendChild(this._defs.node),"svg"!=this.parent.nodeName&&this.stage()},SVG.Doc.prototype=new SVG.Container,SVG.extend(SVG.Doc,{stage:function(){var t,e=this,i=document.createElement("div");return i.style.cssText="position:relative;height:100%;",e.parent.appendChild(i),i.appendChild(e.node),t=function(){"complete"===document.readyState?(e.style("position:absolute;"),setTimeout(function(){e.style("position:relative;"),e.parent.removeChild(e.node.parentNode),e.node.parentNode.removeChild(e.node),e.parent.appendChild(e.node),e.fixSubPixelOffset(),SVG.on(window,"resize",function(){e.fixSubPixelOffset()})},5)):setTimeout(t,10)},t(),this},defs:function(){return this._defs},fixSubPixelOffset:function(){var t=this.node.getScreenCTM();this.style("left",-t.e%1+"px").style("top",-t.f%1+"px")}}),SVG.Shape=function(t){this.constructor.call(this,t)},SVG.Shape.prototype=new SVG.Element,SVG.Rect=function(){this.constructor.call(this,SVG.create("rect"))},SVG.Rect.prototype=new SVG.Shape,SVG.extend(SVG.Container,{rect:function(t,e){return this.put((new SVG.Rect).size(t,e))}}),SVG.Ellipse=function(){this.constructor.call(this,SVG.create("ellipse"))},SVG.Ellipse.prototype=new SVG.Shape,SVG.extend(SVG.Ellipse,{x:function(t){return null==t?this.cx()-this.attr("rx"):this.cx(t+this.attr("rx"))},y:function(t){return null==t?this.cy()-this.attr("ry"):this.cy(t+this.attr("ry"))},cx:function(t){return null==t?this.attr("cx"):this.attr("cx",new SVG.Number(t).divide(this.trans.scaleX))},cy:function(t){return null==t?this.attr("cy"):this.attr("cy",new SVG.Number(t).divide(this.trans.scaleY))},size:function(t,e){return this.attr({rx:new SVG.Number(t).divide(2),ry:new SVG.Number(e).divide(2)})}}),SVG.extend(SVG.Container,{circle:function(t){return this.ellipse(t,t)},ellipse:function(t,e){return this.put(new SVG.Ellipse).size(t,e).move(0,0)}}),SVG.Line=function(){this.constructor.call(this,SVG.create("line"))},SVG.Line.prototype=new SVG.Shape,SVG.extend(SVG.Line,{x:function(t){var e=this.bbox();return null==t?e.x:this.attr({x1:this.attr("x1")-e.x+t,x2:this.attr("x2")-e.x+t})},y:function(t){var e=this.bbox();return null==t?e.y:this.attr({y1:this.attr("y1")-e.y+t,y2:this.attr("y2")-e.y+t})},cx:function(t){var e=this.bbox().width/2;return null==t?this.x()+e:this.x(t-e)},cy:function(t){var e=this.bbox().height/2;return null==t?this.y()+e:this.y(t-e)},size:function(t,e){var i=this.bbox();return this.attr(this.attr("x1")<this.attr("x2")?"x2":"x1",i.x+t).attr(this.attr("y1")<this.attr("y2")?"y2":"y1",i.y+e)},plot:function(t,e,i,n){return this.attr({x1:t,y1:e,x2:i,y2:n})}}),SVG.extend(SVG.Container,{line:function(t,e,i,n){return this.put((new SVG.Line).plot(t,e,i,n))}}),SVG.Polyline=function(t){this.constructor.call(this,SVG.create("polyline")),this.unbiased=t},SVG.Polyline.prototype=new SVG.Shape,SVG.Polygon=function(t){this.constructor.call(this,SVG.create("polygon")),this.unbiased=t},SVG.Polygon.prototype=new SVG.Shape,SVG.extend(SVG.Polyline,SVG.Polygon,{_plot:function(t){if(Array.isArray(t)){var e,i,n=[];for(e=0,i=t.length;i>e;e++)n.push(t[e].join(","));t=n.length>0?n.join(" "):"0,0"}return this.attr("points",t||"0,0")}}),SVG.extend(SVG.Container,{polyline:function(t,e){return this.put(new SVG.Polyline(e)).plot(t)},polygon:function(t,e){return this.put(new SVG.Polygon(e)).plot(t)}}),SVG.Path=function(t){this.constructor.call(this,SVG.create("path")),this.unbiased=t},SVG.Path.prototype=new SVG.Shape,SVG.extend(SVG.Path,{_plot:function(t){return this.attr("d",t||"M0,0")}}),SVG.extend(SVG.Container,{path:function(t,e){return this.put(new SVG.Path(e)).plot(t)}}),SVG.extend(SVG.Polyline,SVG.Polygon,SVG.Path,{x:function(t){return null==t?this.bbox().x:this.transform("x",t)},y:function(t){return null==t?this.bbox().y:this.transform("y",t)},size:function(t,e){var i=t/this._offset.width;return this.transform({scaleX:i,scaleY:null!=e?e/this._offset.height:i})},plot:function(t){var e=this.trans.scaleX,i=this.trans.scaleY;return this._plot(t),this._offset=this.transform({scaleX:1,scaleY:1}).bbox(),this.unbiased?this._offset.x=this._offset.y=0:(this._offset.x-=this.trans.x,this._offset.y-=this.trans.y),this.transform({scaleX:e,scaleY:i})}}),SVG.Image=function(){this.constructor.call(this,SVG.create("image"))},SVG.Image.prototype=new SVG.Shape,SVG.extend(SVG.Image,{load:function(t){return t?this.attr("xlink:href",this.src=t,SVG.xlink):this}}),SVG.extend(SVG.Container,{image:function(t,e,i){return e=null!=e?e:100,this.put((new SVG.Image).load(t).size(e,null!=i?i:e))}});var t="size family weight stretch variant style".split(" ");SVG.Text=function(){this.constructor.call(this,SVG.create("text")),this.styles={"font-size":16,"font-family":"Helvetica, Arial, sans-serif","text-anchor":"start"},this._leading=1.2,this._base=.276666666},SVG.Text.prototype=new SVG.Shape,SVG.extend(SVG.Text,{x:function(t,e){return null==t?e?this.attr("x"):this.bbox().x:(e||(e=this.style("text-anchor"),t="start"==e?t:"end"==e?t+this.bbox().width:t+this.bbox().width/2),this.attr("x",t))},cx:function(t){return null==t?this.bbox().cx:this.x(t-this.bbox().width/2)},cy:function(t,e){return null==t?this.bbox().cy:this.y(e?t:t-this.bbox().height/2)},move:function(t,e,i){return this.x(t,i).y(e)},center:function(t,e,i){return this.cx(t,i).cy(e,i)},text:function(t){if(null==t)return this.content;this.clear(),this.content=SVG.regex.isBlank.test(t)?"text":t;var e,i,n=t.split("\n");for(e=0,i=n.length;i>e;e++)this.tspan(n[e]);return this.attr("textLength",1).attr("textLength",null)},tspan:function(t){var e=(new SVG.TSpan).text(t);return this.node.appendChild(e.node),this.lines.push(e),e.attr("style",this.style())},size:function(t){return this.attr("font-size",t)},leading:function(t){return null==t?this._leading:(this._leading=t,this.rebuild("leading",t))},rebuild:function(){var t,e,i=this.styles["font-size"];for(t=0,e=this.lines.length;e>t;t++)this.lines[t].attr({dy:i*this._leading-(0==t?i*this._base:0),x:this.attr("x")||0,style:this.style()});return this},clear:function(){for(;this.node.hasChildNodes();)this.node.removeChild(this.node.lastChild);return this.lines=[],this}}),SVG.extend(SVG.Container,{text:function(t){return this.put((new SVG.Text).text(t))}}),SVG.TSpan=function(){this.constructor.call(this,SVG.create("tspan"))},SVG.TSpan.prototype=new SVG.Shape,SVG.extend(SVG.TSpan,{text:function(t){return this.node.appendChild(document.createTextNode(t)),this}}),SVG.Nested=function(){this.constructor.call(this,SVG.create("svg")),this.style("overflow","visible")},SVG.Nested.prototype=new SVG.Container,SVG.extend(SVG.Container,{nested:function(){return this.put(new SVG.Nested)}}),SVG._stroke=["color","width","opacity","linecap","linejoin","miterlimit","dasharray","dashoffset"],SVG._fill=["color","opacity","rule"];var e=function(t,e){return"color"==e?t:t+"-"+e};["fill","stroke"].forEach(function(t){var i={};i[t]=function(i){if("string"==typeof i||SVG.Color.isRgb(i)||i&&"function"==typeof i.fill)this.attr(t,i);else for(index=SVG["_"+t].length-1;index>=0;index--)null!=i[SVG["_"+t][index]]&&this.attr(e(t,SVG["_"+t][index]),i[SVG["_"+t][index]]);return this},SVG.extend(SVG.Shape,SVG.FX,i)}),SVG.extend(SVG.Element,SVG.FX,{rotate:function(t,e,i){return this.transform({rotation:t||0,cx:e,cy:i})},skew:function(t,e){return this.transform({skewX:t||0,skewY:e||0})},scale:function(t,e){return this.transform({scaleX:t,scaleY:null==e?t:e})},translate:function(t,e){return this.transform({x:t,y:e})},matrix:function(t){return this.transform({matrix:t})},opacity:function(t){return this.attr("opacity",t)}}),SVG.Text&&SVG.extend(SVG.Text,SVG.FX,{font:function(e){for(var i in e)"anchor"==i?this.attr("text-anchor",e[i]):t.indexOf(i)>-1?this.attr("font-"+i,e[i]):this.attr(i,e[i]);return this}})}.call(this);
\ No newline at end of file
diff --git a/spec/index.html b/spec/index.html
index 524bff7..d619acd 100644
--- a/spec/index.html
+++ b/spec/index.html
@@ -44,6 +44,8 @@
 <script type="text/javascript" src="spec/doc.js"></script>
 <script type="text/javascript" src="spec/group.js"></script>
 <script type="text/javascript" src="spec/gradient.js"></script>
+<script type="text/javascript" src="spec/mask.js"></script>
+<script type="text/javascript" src="spec/clip.js"></script>
 <script type="text/javascript" src="spec/color.js"></script>
 <script type="text/javascript" src="spec/number.js"></script>
 
diff --git a/spec/spec/clip.js b/spec/spec/clip.js
new file mode 100644
index 0000000..ac3a147
--- /dev/null
+++ b/spec/spec/clip.js
@@ -0,0 +1,57 @@
+describe('ClipPath', function() {
+  var rect, circle
+
+  beforeEach(function() {
+    rect   = draw.rect(100,100)
+    circle = draw.circle(100).move(50, 50)
+    rect.clipWith(circle)
+  })
+
+  afterEach(function() {
+    draw.clear()
+  })
+
+  it('moves the masking element to a new clip node', function() {
+    expect(circle.parent instanceof SVG.Clip).toBe(true)
+  })
+  
+  it('creates the clip node in the defs node', function() {
+    expect(circle.parent.parent).toBe(draw.defs())
+  })
+
+  it('sets the "clip-path" attribute on the cliped element with the clip id', function() {
+    expect(rect.attr('clip-path')).toBe('url(#' + circle.parent.attr('id') + ')')
+  })
+
+  it('references the clip element in the masked element', function() {
+    expect(rect.clipper).toBe(circle.parent)
+  })
+
+  it('references the clipped element in the clipPath target list', function() {
+    expect(rect.clipper.targets.indexOf(rect) > -1).toBe(true)
+  })
+
+  it('unclips all clipped elements when being removed', function() {
+    rect.clipper.remove()
+    expect(rect.attr('clip-path')).toBe(undefined)
+  })
+
+  describe('unclip()', function() {
+
+    it('clears the "clip-path" attribute on the clipped element', function() {
+      rect.unclip()
+      expect(rect.attr('clip-path')).toBe(undefined)
+    })
+
+    it('removes the reference to the clipping element', function() {
+      rect.unclip()
+      expect(rect.clipper).toBe(undefined)
+    })
+
+    it('returns the clipPath element', function() {
+      expect(rect.unclip()).toBe(rect)
+    })
+
+  })
+
+})
\ No newline at end of file
diff --git a/spec/spec/mask.js b/spec/spec/mask.js
new file mode 100644
index 0000000..b8d8a10
--- /dev/null
+++ b/spec/spec/mask.js
@@ -0,0 +1,57 @@
+describe('Mask', function() {
+  var rect, circle
+
+  beforeEach(function() {
+    rect   = draw.rect(100,100)
+    circle = draw.circle(100).move(50, 50).fill('#fff')
+    rect.maskWith(circle)
+  })
+
+  afterEach(function() {
+    draw.clear()
+  })
+
+  it('moves the masking element to a new mask node', function() {
+    expect(circle.parent instanceof SVG.Mask).toBe(true)
+  })
+  
+  it('creates the mask node in the defs node', function() {
+    expect(circle.parent.parent).toBe(draw.defs())
+  })
+
+  it('sets the "mask" attribute on the masked element with the mask id', function() {
+    expect(rect.attr('mask')).toBe('url(#' + circle.parent.attr('id') + ')')
+  })
+
+  it('references the mask element in the masked element', function() {
+    expect(rect.masker).toBe(circle.parent)
+  })
+
+  it('references the masked element in the mask target list', function() {
+    expect(rect.masker.targets.indexOf(rect) > -1).toBe(true)
+  })
+
+  it('unmasks all masked elements when being removed', function() {
+    rect.masker.remove()
+    expect(rect.attr('mask')).toBe(undefined)
+  })
+
+  describe('unmask()', function() {
+
+    it('clears the "mask" attribute on the masked element', function() {
+      rect.unmask()
+      expect(rect.attr('mask')).toBe(undefined)
+    })
+
+    it('removes the reference to the masking element', function() {
+      rect.unmask()
+      expect(rect.masker).toBe(undefined)
+    })
+
+    it('returns the element itslef', function() {
+      expect(rect.unmask()).toBe(rect)
+    })
+
+  })
+
+})
\ No newline at end of file
diff --git a/src/clip.js b/src/clip.js
index 7341c8f..2b4afce 100644
--- a/src/clip.js
+++ b/src/clip.js
@@ -1,18 +1,47 @@
 SVG.Clip = function() {
   this.constructor.call(this, SVG.create('clipPath'))
+
+  /* keep references to clipped elements */
+  this.targets = []
 }
 
 // Inherit from SVG.Container
 SVG.Clip.prototype = new SVG.Container
 
 //
+SVG.extend(SVG.Clip, {
+  // Unclip all clipped elements and remove itself
+  remove: function() {
+    /* unclip all targets */
+    for (var i = this.targets.length - 1; i >= 0; i--)
+      if (this.targets[i])
+        this.targets[i].unclip()
+    delete this.targets
+
+    /* remove clipPath from parent */
+    this.parent.removeElement(this)
+    
+    return this
+  }
+})
+
+//
 SVG.extend(SVG.Element, {
   // Distribute clipPath to svg element
   clipWith: function(element) {
     /* use given clip or create a new one */
-    this.clip = element instanceof SVG.Clip ? element : this.parent.clip().add(element)
+    this.clipper = element instanceof SVG.Clip ? element : this.parent.clip().add(element)
+
+    /* store reverence on self in mask */
+    this.clipper.targets.push(this)
     
-    return this.attr('clip-path', 'url(#' + this.clip.attr('id') + ')')
+    /* apply mask */
+    return this.attr('clip-path', 'url(#' + this.clipper.attr('id') + ')')
+  }
+  // Unclip element
+, unclip: function() {
+    delete this.clipper
+    return this.attr('clip-path', null)
   }
   
 })
diff --git a/src/mask.js b/src/mask.js
index ddd7565..6ebccdc 100644
--- a/src/mask.js
+++ b/src/mask.js
@@ -1,18 +1,47 @@
 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.mask = element instanceof SVG.Mask ? element : this.parent.mask().add(element)
+    this.masker = element instanceof SVG.Mask ? element : this.parent.mask().add(element)
+
+    /* store reverence on self in mask */
+    this.masker.targets.push(this)
     
-    return this.attr('mask', 'url(#' + this.mask.attr('id') + ')')
+    /* apply mask */
+    return this.attr('mask', 'url(#' + this.masker.attr('id') + ')')
+  }
+  // Unmask element
+, unmask: function() {
+    delete this.masker
+    return this.attr('mask', null)
   }
   
 })