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jSignature.min.js
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jSignature.min.js
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/*
jSignature v2 "2012-11-01T22:48" "commit ID 1c15dfafecc75925c3b7d529356a558b59220edb"
Copyright (c) 2012 Willow Systems Corp http://willow-systems.com
Copyright (c) 2010 Brinley Ang http://www.unbolt.net
MIT License <http://www.opensource.org/licenses/mit-license.php>
Simplify.js BSD
(c) 2012, Vladimir Agafonkin
mourner.github.com/simplify-js
base64 encoder
MIT, GPL
http://phpjs.org/functions/base64_encode
+ original by: Tyler Akins (http://rumkin.com)
+ improved by: Bayron Guevara
+ improved by: Thunder.m
+ improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
+ bugfixed by: Pellentesque Malesuada
+ improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
+ improved by: Rafal Kukawski (http://kukawski.pl)
jSignature v2 jSignature's Undo Button and undo functionality plugin
jSignature v2 jSignature's custom "base30" format export and import plugins.
jSignature v2 SVG export plugin.
*/
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this.fatFingerCompensation=0;var g=function(b){var j,a,g=function(g){g=g.changedTouches&&0<g.changedTouches.length?g.changedTouches[0]:g;return new k(Math.round(g.pageX+j),Math.round(g.pageY+a)+b.fatFingerCompensation)},d=new y(750,function(){b.dataEngine.endStroke()});this.drawEndHandler=function(j){try{j.preventDefault()}catch(a){}d.clear();b.dataEngine.endStroke()};this.drawStartHandler=function(c){c.preventDefault();var s=$(b.canvas).offset();j=-1*s.left;a=-1*s.top;b.dataEngine.startStroke(g(c));
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b.y[a]),c=d.getVectorToPoint(g);if(1<a){var f=new k(b.x[a-2],b.y[a-2]),l=f.getVectorToPoint(d),i;if(l.getLength()>this.lineCurveThreshold){i=2<a?(new k(b.x[a-3],b.y[a-3])).getVectorToPoint(f):new m(0,0);var e=0.35*l.getLength(),h=l.angleTo(i.reverse()),p=c.angleTo(l.reverse());i=(new m(i.x+l.x,i.y+l.y)).resizeTo(Math.max(0.05,h)*e);var n=(new m(l.x+c.x,l.y+c.y)).reverse().resizeTo(Math.max(0.05,p)*e),l=this.canvasContext,e=f.x,p=f.y,h=d.x,w=d.y,A=f.x+i.x,f=f.y+i.y;i=d.x+n.x;n=d.y+n.y;l.beginPath();
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l=d.x,i=d.y,e=g.x+f.x,g=g.y+f.y,f=d.x,d=d.y;c.beginPath();c.moveTo(b,a);c.bezierCurveTo(e,g,f,d,l,i)}else c=this.canvasContext,b=g.x,g=g.y,a=d.x,d=d.y,c.beginPath(),c.moveTo(b,g),c.lineTo(a,d);c.stroke()}}};r.prototype.resetCanvas=function(b){var a=this.canvas,d=this.settings,c=this.canvasContext,f=this.isCanvasEmulator,l=a.width,i=a.height;c.clearRect(0,0,l+30,i+30);c.shadowColor=c.fillStyle=d["background-color"];f&&c.fillRect(0,0,l+30,i+30);c.lineWidth=Math.ceil(parseInt(d.lineWidth,10));c.lineCap=
c.lineJoin="round";c.strokeStyle=d["decor-color"];c.shadowOffsetX=0;c.shadowOffsetY=0;var h=Math.round(i/5),p=1.5*h,k=i-h,l=l-1.5*h,i=i-h;c.beginPath();c.moveTo(p,k);c.lineTo(l,i);c.stroke();c.strokeStyle=d.color;f||(c.shadowColor=c.strokeStyle,c.shadowOffsetX=0.5*c.lineWidth,c.shadowOffsetY=-0.6*c.lineWidth,c.shadowBlur=0);b||(b=[]);c=this.dataEngine=new t(b,this,z,u,x);d.data=b;$(a).data(e+".data",b).data(e+".settings",d);var n=this.$parent,w=this.events,A=e;c.changed=function(){w.publish(A+".change");
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Math.round(c.height()*b.sizeRatio));c.addClass(e);a.width=c.width();a.height=c.height();b=a;if(b.getContext)b=!1;else{var c=b.ownerDocument.parentWindow,d=c.FlashCanvas?b.ownerDocument.parentWindow.FlashCanvas:"undefined"===typeof FlashCanvas?void 0:FlashCanvas;if(d){b=d.initElement(b);d=1;c&&(c.screen&&c.screen.deviceXDPI&&c.screen.logicalXDPI)&&(d=1*c.screen.deviceXDPI/c.screen.logicalXDPI);if(1!==d)try{$(b).children("object").get(0).resize(Math.ceil(b.width*d),Math.ceil(b.height*d)),b.getContext("2d").scale(d,
d)}catch(f){}b=!0}else throw Error("Canvas element does not support 2d context. jSignature cannot proceed.");}this.isCanvasEmulator=b;a.onselectstart=function(b){b&&b.preventDefault&&b.preventDefault();b&&b.stopPropagation&&b.stopPropagation();return!1};return a};var p=window,h=function(b,a){var c=new Image,d=this;c.onload=function(){d.getContext("2d").drawImage(c,0,0,c.width<d.width?c.width:d.width,c.height<d.height?c.height:d.height)};c.src="data:"+a+","+b},a=function(b){this.find("canvas."+e).add(this.filter("canvas."+
e)).data(e+".this").resetCanvas(b);return this},f=function(b,a){if(void 0===a&&("string"===typeof b&&"data:"===b.substr(0,5))&&(a=b.slice(5).split(",")[0],b=b.slice(6+a.length),a===b))return;var c=this.find("canvas."+e).add(this.filter("canvas."+e));if(n.hasOwnProperty(a))0!==c.length&&n[a].call(c[0],b,a,function(b){return function(){return b.resetCanvas.apply(b,arguments)}}(c.data(e+".this")));else throw Error(e+" is unable to find import plugin with for format '"+String(a)+"'");return this},d=new v,
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C[b])return C[b].apply(this,Array.prototype.slice.call(arguments,1));$.error("Method "+String(b)+" does not exist on jQuery."+e)}})();
(function(){$.fn.jSignature("addPlugin","instance","UndoButton",function(q){this.events.subscribe("jSignature.attachingEventHandlers",function(){if(this.settings[q]){var m=this.settings[q];"function"!==typeof m&&(m=function(){var e=$('<input type="button" value="Undo last stroke" style="position:absolute;display:none;margin:0 !important;top:auto" />').appendTo(this.$controlbarLower),k=e.width();e.css("left",Math.round((this.canvas.width-k)/2));k!==e.width()&&e.width(k);return e});var k=m.call(this),
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(function(){for(var q={},m={},k="0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWX".split(""),t=k.length/2,r=t-1;-1<r;r--)q[k[r]]=k[r+t],m[k[r+t]]=k[r];var e=function(e){for(var e=e.split(""),h=e.length,a=1;a<h;a++)e[a]=q[e[a]];return e.join("")},y=function(k){for(var h=[],a=0,f=1,d=k.length,c,l,i=0;i<d;i++)c=Math.round(k[i]),l=c-a,a=c,0>l&&0<f?(f=-1,h.push("Z")):0<l&&0>f&&(f=1,h.push("Y")),c=Math.abs(l),c>=t?h.push(e(c.toString(t))):h.push(c.toString(t));return h.join("")},v=function(e){for(var h=
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