diff --git a/HISTORY.md b/HISTORY.md
index 607068e..43e96c5 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,6 +1,9 @@
 # History
-
 ---
+## 3.0.6
+
+`tag:fixed` 修复不能渲染小数点像素值问题
+
 ## 3.0.5
 
 `tag:fixed` canvas 模式在 Retina 下显示模糊
diff --git a/dist/arale-qrcode/3.0.5/index.js b/dist/arale-qrcode/3.0.5/index.js
deleted file mode 100644
index 4f08742..0000000
--- a/dist/arale-qrcode/3.0.5/index.js
+++ /dev/null
@@ -1 +0,0 @@
-this.AraleQRCode=function(t){function e(o){if(r[o])return r[o].exports;var i=r[o]={exports:{},id:o,loaded:!1};return t[o].call(i.exports,i,i.exports,e),i.loaded=!0,i.exports}var r={};return e.m=t,e.c=r,e.p="",e(0)}([function(t,e,r){t.exports=r(1)},function(t,e,r){"use strict";t.exports=r(2)},function(t,e,r){"use strict";var o=r(4),i=[],n=r(3),s=function(t){var e=t.options;return e.pdground&&(t.row>1&&t.row<5&&t.col>1&&t.col<5||t.row>t.count-6&&t.row<t.count-2&&t.col>1&&t.col<5||t.row>1&&t.row<5&&t.col>t.count-6&&t.col<t.count-2)?e.pdground:e.foreground},u=function(t){var e=t.backingStorePixelRatio||t.webkitBackingStorePixelRatio||t.mozBackingStorePixelRatio||t.msBackingStorePixelRatio||t.oBackingStorePixelRatio||t.backingStorePixelRatio||1;return(window.devicePixelRatio||1)/e},a=function(t){"string"==typeof t&&(t={text:t}),this.options=o({},{text:"",render:"",size:256,correctLevel:3,background:"#ffffff",foreground:"#000000",image:"",imageSize:30},t);for(var e=null,r=0,s=i.length;s>r;r++)if(i[r].text==this.options.text&&i[r].text.correctLevel==this.options.correctLevel){e=i[r].obj;break}if(r==s&&(e=new n(this.options.text,this.options.correctLevel),i.push({text:this.options.text,correctLevel:this.options.correctLevel,obj:e})),this.options.render)switch(this.options.render){case"canvas":return this.createCanvas(e);case"table":return this.createTable(e);case"svg":return this.createSVG(e);default:return this.createDefault(e)}return this.createDefault(e)};o(a.prototype,{createDefault:function(t){var e=document.createElement("canvas");if(e.getContext)return this.createCanvas(t);var r="http://www.w3.org/2000/svg";return document.createElementNS&&document.createElementNS(r,"svg").createSVGRect?this.createSVG(t):this.createTable(t)},createCanvas:function(t){var e=this.options,r=document.createElement("canvas"),o=r.getContext("2d"),i=t.getModuleCount(),n=u(o),a=e.size,l=a*n,h=e.imageSize*n,g=function(t,e){var r=new Image;r.src=t,r.onload=function(){e(this),r.onload=null}},c=(l/i).toPrecision(4),f=(l/i).toPrecision(4);r.width=l,r.height=l;for(var d=0;i>d;d++)for(var m=0;i>m;m++){var p=Math.ceil((m+1)*c)-Math.floor(m*c),v=Math.ceil((d+1)*c)-Math.floor(d*c),b=s({row:d,col:m,count:i,options:e});o.fillStyle=t.modules[d][m]?b:e.background,o.fillRect(Math.round(m*c),Math.round(d*f),p,v)}return e.image&&g(e.image,function(t){var e=((l-h)/2).toFixed(2),r=((l-h)/2).toFixed(2);o.drawImage(t,e,r,h,h)}),r.style.width=a+"px",r.style.height=a+"px",r},createTable:function(t){var e=this.options,r=t.getModuleCount(),o=Math.floor(e.size/r),i=Math.floor(e.size/r);0>=o&&(o=80>r?2:1),0>=i&&(i=80>r?2:1);var n=[];n.push('<table style="border:0px; margin:0px; padding:0px; border-collapse:collapse; background-color:'+e.background+';">');for(var u=0;r>u;u++){n.push('<tr style="border:0px; margin:0px; padding:0px; height:'+i+'px">');for(var a=0;r>a;a++){var l=s({row:u,col:a,count:r,options:e});t.modules[u][a]?n.push('<td style="border:0px; margin:0px; padding:0px; width:'+o+"px; background-color:"+l+'"></td>'):n.push('<td style="border:0px; margin:0px; padding:0px; width:'+o+"px; background-color:"+e.background+'"></td>')}n.push("</tr>")}if(n.push("</table>"),e.image){var h=o*r,g=i*r,c=((h-e.imageSize)/2).toFixed(2),f=((g-e.imageSize)/2).toFixed(2);n.unshift("<div style='position:relative;\n                        width:"+h+"px;\n                        height:"+g+"px;'>"),n.push("<img src='"+e.image+"'\n                        width='"+e.imageSize+"'\n                        height='"+e.imageSize+"'\n                        style='position:absolute;left:"+c+"px; top:"+f+"px;'>"),n.push("</div>")}var d=document.createElement("span");return d.innerHTML=n.join(""),d.firstChild},createSVG:function(t){var e=this.options,r=t.getModuleCount(),o=r/e.size,i=document.createElementNS("http://www.w3.org/2000/svg","svg");i.setAttribute("width",e.size),i.setAttribute("height",e.size),i.setAttribute("viewBox","0 0 "+r+" "+r);for(var n=0;r>n;n++)for(var u=0;r>u;u++){var a=document.createElementNS("http://www.w3.org/2000/svg","rect"),l=s({row:n,col:u,count:r,options:e});a.setAttribute("x",u),a.setAttribute("y",n),a.setAttribute("width",1),a.setAttribute("height",1),a.setAttribute("stroke-width",0),t.modules[n][u]?a.setAttribute("fill",l):a.setAttribute("fill",e.background),i.appendChild(a)}if(e.image){var h=document.createElementNS("http://www.w3.org/2000/svg","image");h.setAttributeNS("http://www.w3.org/1999/xlink","href",e.image),h.setAttribute("x",((r-e.imageSize*o)/2).toFixed(2)),h.setAttribute("y",((r-e.imageSize*o)/2).toFixed(2)),h.setAttribute("width",e.imageSize*o),h.setAttribute("height",e.imageSize*o),i.appendChild(h)}return i}}),t.exports=a},function(t,e){"use strict";function r(t){var e,r,o;return 128>t?[t]:2048>t?(e=192+(t>>6),r=128+(63&t),[e,r]):(e=224+(t>>12),r=128+(t>>6&63),o=128+(63&t),[e,r,o])}function o(t){for(var e=[],o=0;o<t.length;o++)for(var i=t.charCodeAt(o),n=r(i),s=0;s<n.length;s++)e.push(n[s]);return e}function i(t,e){this.typeNumber=-1,this.errorCorrectLevel=e,this.modules=null,this.moduleCount=0,this.dataCache=null,this.rsBlocks=null,this.totalDataCount=-1,this.data=t,this.utf8bytes=o(t),this.make()}function n(t,e){if(void 0==t.length)throw new Error(t.length+"/"+e);for(var r=0;r<t.length&&0==t[r];)r++;this.num=new Array(t.length-r+e);for(var o=0;o<t.length-r;o++)this.num[o]=t[o+r]}function s(){this.buffer=new Array,this.length=0}i.prototype={constructor:i,getModuleCount:function(){return this.moduleCount},make:function(){this.getRightType(),this.dataCache=this.createData(),this.createQrcode()},makeImpl:function(t){this.moduleCount=4*this.typeNumber+17,this.modules=new Array(this.moduleCount);for(var e=0;e<this.moduleCount;e++)this.modules[e]=new Array(this.moduleCount);this.setupPositionProbePattern(0,0),this.setupPositionProbePattern(this.moduleCount-7,0),this.setupPositionProbePattern(0,this.moduleCount-7),this.setupPositionAdjustPattern(),this.setupTimingPattern(),this.setupTypeInfo(!0,t),this.typeNumber>=7&&this.setupTypeNumber(!0),this.mapData(this.dataCache,t)},setupPositionProbePattern:function(t,e){for(var r=-1;7>=r;r++)if(!(-1>=t+r||this.moduleCount<=t+r))for(var o=-1;7>=o;o++)-1>=e+o||this.moduleCount<=e+o||(r>=0&&6>=r&&(0==o||6==o)||o>=0&&6>=o&&(0==r||6==r)||r>=2&&4>=r&&o>=2&&4>=o?this.modules[t+r][e+o]=!0:this.modules[t+r][e+o]=!1)},createQrcode:function(){for(var t=0,e=0,r=null,o=0;8>o;o++){this.makeImpl(o);var i=l.getLostPoint(this);(0==o||t>i)&&(t=i,e=o,r=this.modules)}this.modules=r,this.setupTypeInfo(!1,e),this.typeNumber>=7&&this.setupTypeNumber(!1)},setupTimingPattern:function(){for(var t=8;t<this.moduleCount-8;t++)null==this.modules[t][6]&&(this.modules[t][6]=t%2==0,null==this.modules[6][t]&&(this.modules[6][t]=t%2==0))},setupPositionAdjustPattern:function(){for(var t=l.getPatternPosition(this.typeNumber),e=0;e<t.length;e++)for(var r=0;r<t.length;r++){var o=t[e],i=t[r];if(null==this.modules[o][i])for(var n=-2;2>=n;n++)for(var s=-2;2>=s;s++)-2==n||2==n||-2==s||2==s||0==n&&0==s?this.modules[o+n][i+s]=!0:this.modules[o+n][i+s]=!1}},setupTypeNumber:function(t){for(var e=l.getBCHTypeNumber(this.typeNumber),r=0;18>r;r++){var o=!t&&1==(e>>r&1);this.modules[Math.floor(r/3)][r%3+this.moduleCount-8-3]=o,this.modules[r%3+this.moduleCount-8-3][Math.floor(r/3)]=o}},setupTypeInfo:function(t,e){for(var r=u[this.errorCorrectLevel]<<3|e,o=l.getBCHTypeInfo(r),i=0;15>i;i++){var n=!t&&1==(o>>i&1);6>i?this.modules[i][8]=n:8>i?this.modules[i+1][8]=n:this.modules[this.moduleCount-15+i][8]=n;var n=!t&&1==(o>>i&1);8>i?this.modules[8][this.moduleCount-i-1]=n:9>i?this.modules[8][15-i-1+1]=n:this.modules[8][15-i-1]=n}this.modules[this.moduleCount-8][8]=!t},createData:function(){var t=new s,e=this.typeNumber>9?16:8;t.put(4,4),t.put(this.utf8bytes.length,e);for(var r=0,o=this.utf8bytes.length;o>r;r++)t.put(this.utf8bytes[r],8);for(t.length+4<=8*this.totalDataCount&&t.put(0,4);t.length%8!=0;)t.putBit(!1);for(;;){if(t.length>=8*this.totalDataCount)break;if(t.put(i.PAD0,8),t.length>=8*this.totalDataCount)break;t.put(i.PAD1,8)}return this.createBytes(t)},createBytes:function(t){for(var e=0,r=0,o=0,i=this.rsBlock.length/3,s=new Array,u=0;i>u;u++)for(var a=this.rsBlock[3*u+0],h=this.rsBlock[3*u+1],g=this.rsBlock[3*u+2],c=0;a>c;c++)s.push([g,h]);for(var f=new Array(s.length),d=new Array(s.length),m=0;m<s.length;m++){var p=s[m][0],v=s[m][1]-p;r=Math.max(r,p),o=Math.max(o,v),f[m]=new Array(p);for(var u=0;u<f[m].length;u++)f[m][u]=255&t.buffer[u+e];e+=p;var b=l.getErrorCorrectPolynomial(v),w=new n(f[m],b.getLength()-1),A=w.mod(b);d[m]=new Array(b.getLength()-1);for(var u=0;u<d[m].length;u++){var T=u+A.getLength()-d[m].length;d[m][u]=T>=0?A.get(T):0}}for(var P=new Array(this.totalDataCount),y=0,u=0;r>u;u++)for(var m=0;m<s.length;m++)u<f[m].length&&(P[y++]=f[m][u]);for(var u=0;o>u;u++)for(var m=0;m<s.length;m++)u<d[m].length&&(P[y++]=d[m][u]);return P},mapData:function(t,e){for(var r=-1,o=this.moduleCount-1,i=7,n=0,s=this.moduleCount-1;s>0;s-=2)for(6==s&&s--;;){for(var u=0;2>u;u++)if(null==this.modules[o][s-u]){var a=!1;n<t.length&&(a=1==(t[n]>>>i&1));var h=l.getMask(e,o,s-u);h&&(a=!a),this.modules[o][s-u]=a,i--,-1==i&&(n++,i=7)}if(o+=r,0>o||this.moduleCount<=o){o-=r,r=-r;break}}}},i.PAD0=236,i.PAD1=17;for(var u=[1,0,3,2],a={PATTERN000:0,PATTERN001:1,PATTERN010:2,PATTERN011:3,PATTERN100:4,PATTERN101:5,PATTERN110:6,PATTERN111:7},l={PATTERN_POSITION_TABLE:[[],[6,18],[6,22],[6,26],[6,30],[6,34],[6,22,38],[6,24,42],[6,26,46],[6,28,50],[6,30,54],[6,32,58],[6,34,62],[6,26,46,66],[6,26,48,70],[6,26,50,74],[6,30,54,78],[6,30,56,82],[6,30,58,86],[6,34,62,90],[6,28,50,72,94],[6,26,50,74,98],[6,30,54,78,102],[6,28,54,80,106],[6,32,58,84,110],[6,30,58,86,114],[6,34,62,90,118],[6,26,50,74,98,122],[6,30,54,78,102,126],[6,26,52,78,104,130],[6,30,56,82,108,134],[6,34,60,86,112,138],[6,30,58,86,114,142],[6,34,62,90,118,146],[6,30,54,78,102,126,150],[6,24,50,76,102,128,154],[6,28,54,80,106,132,158],[6,32,58,84,110,136,162],[6,26,54,82,110,138,166],[6,30,58,86,114,142,170]],G15:1335,G18:7973,G15_MASK:21522,getBCHTypeInfo:function(t){for(var e=t<<10;l.getBCHDigit(e)-l.getBCHDigit(l.G15)>=0;)e^=l.G15<<l.getBCHDigit(e)-l.getBCHDigit(l.G15);return(t<<10|e)^l.G15_MASK},getBCHTypeNumber:function(t){for(var e=t<<12;l.getBCHDigit(e)-l.getBCHDigit(l.G18)>=0;)e^=l.G18<<l.getBCHDigit(e)-l.getBCHDigit(l.G18);return t<<12|e},getBCHDigit:function(t){for(var e=0;0!=t;)e++,t>>>=1;return e},getPatternPosition:function(t){return l.PATTERN_POSITION_TABLE[t-1]},getMask:function(t,e,r){switch(t){case a.PATTERN000:return(e+r)%2==0;case a.PATTERN001:return e%2==0;case a.PATTERN010:return r%3==0;case a.PATTERN011:return(e+r)%3==0;case a.PATTERN100:return(Math.floor(e/2)+Math.floor(r/3))%2==0;case a.PATTERN101:return e*r%2+e*r%3==0;case a.PATTERN110:return(e*r%2+e*r%3)%2==0;case a.PATTERN111:return(e*r%3+(e+r)%2)%2==0;default:throw new Error("bad maskPattern:"+t)}},getErrorCorrectPolynomial:function(t){for(var e=new n([1],0),r=0;t>r;r++)e=e.multiply(new n([1,h.gexp(r)],0));return e},getLostPoint:function(t){for(var e=t.getModuleCount(),r=0,o=0,i=0;e>i;i++)for(var n=0,s=t.modules[i][0],u=0;e>u;u++){var a=t.modules[i][u];if(e-6>u&&a&&!t.modules[i][u+1]&&t.modules[i][u+2]&&t.modules[i][u+3]&&t.modules[i][u+4]&&!t.modules[i][u+5]&&t.modules[i][u+6]&&(e-10>u?t.modules[i][u+7]&&t.modules[i][u+8]&&t.modules[i][u+9]&&t.modules[i][u+10]&&(r+=40):u>3&&t.modules[i][u-1]&&t.modules[i][u-2]&&t.modules[i][u-3]&&t.modules[i][u-4]&&(r+=40)),e-1>i&&e-1>u){var l=0;a&&l++,t.modules[i+1][u]&&l++,t.modules[i][u+1]&&l++,t.modules[i+1][u+1]&&l++,(0==l||4==l)&&(r+=3)}s^a?n++:(s=a,n>=5&&(r+=3+n-5),n=1),a&&o++}for(var u=0;e>u;u++)for(var n=0,s=t.modules[0][u],i=0;e>i;i++){var a=t.modules[i][u];e-6>i&&a&&!t.modules[i+1][u]&&t.modules[i+2][u]&&t.modules[i+3][u]&&t.modules[i+4][u]&&!t.modules[i+5][u]&&t.modules[i+6][u]&&(e-10>i?t.modules[i+7][u]&&t.modules[i+8][u]&&t.modules[i+9][u]&&t.modules[i+10][u]&&(r+=40):i>3&&t.modules[i-1][u]&&t.modules[i-2][u]&&t.modules[i-3][u]&&t.modules[i-4][u]&&(r+=40)),s^a?n++:(s=a,n>=5&&(r+=3+n-5),n=1)}var h=Math.abs(100*o/e/e-50)/5;return r+=10*h}},h={glog:function(t){if(1>t)throw new Error("glog("+t+")");return h.LOG_TABLE[t]},gexp:function(t){for(;0>t;)t+=255;for(;t>=256;)t-=255;return h.EXP_TABLE[t]},EXP_TABLE:new Array(256),LOG_TABLE:new Array(256)},g=0;8>g;g++)h.EXP_TABLE[g]=1<<g;for(var g=8;256>g;g++)h.EXP_TABLE[g]=h.EXP_TABLE[g-4]^h.EXP_TABLE[g-5]^h.EXP_TABLE[g-6]^h.EXP_TABLE[g-8];for(var g=0;255>g;g++)h.LOG_TABLE[h.EXP_TABLE[g]]=g;n.prototype={get:function(t){return this.num[t]},getLength:function(){return this.num.length},multiply:function(t){for(var e=new Array(this.getLength()+t.getLength()-1),r=0;r<this.getLength();r++)for(var o=0;o<t.getLength();o++)e[r+o]^=h.gexp(h.glog(this.get(r))+h.glog(t.get(o)));return new n(e,0)},mod:function(t){var e=this.getLength(),r=t.getLength();if(0>e-r)return this;for(var o=new Array(e),i=0;e>i;i++)o[i]=this.get(i);for(;o.length>=r;){for(var s=h.glog(o[0])-h.glog(t.get(0)),i=0;i<t.getLength();i++)o[i]^=h.gexp(h.glog(t.get(i))+s);for(;0==o[0];)o.shift()}return new n(o,0)}};var c=[[1,26,19],[1,26,16],[1,26,13],[1,26,9],[1,44,34],[1,44,28],[1,44,22],[1,44,16],[1,70,55],[1,70,44],[2,35,17],[2,35,13],[1,100,80],[2,50,32],[2,50,24],[4,25,9],[1,134,108],[2,67,43],[2,33,15,2,34,16],[2,33,11,2,34,12],[2,86,68],[4,43,27],[4,43,19],[4,43,15],[2,98,78],[4,49,31],[2,32,14,4,33,15],[4,39,13,1,40,14],[2,121,97],[2,60,38,2,61,39],[4,40,18,2,41,19],[4,40,14,2,41,15],[2,146,116],[3,58,36,2,59,37],[4,36,16,4,37,17],[4,36,12,4,37,13],[2,86,68,2,87,69],[4,69,43,1,70,44],[6,43,19,2,44,20],[6,43,15,2,44,16],[4,101,81],[1,80,50,4,81,51],[4,50,22,4,51,23],[3,36,12,8,37,13],[2,116,92,2,117,93],[6,58,36,2,59,37],[4,46,20,6,47,21],[7,42,14,4,43,15],[4,133,107],[8,59,37,1,60,38],[8,44,20,4,45,21],[12,33,11,4,34,12],[3,145,115,1,146,116],[4,64,40,5,65,41],[11,36,16,5,37,17],[11,36,12,5,37,13],[5,109,87,1,110,88],[5,65,41,5,66,42],[5,54,24,7,55,25],[11,36,12],[5,122,98,1,123,99],[7,73,45,3,74,46],[15,43,19,2,44,20],[3,45,15,13,46,16],[1,135,107,5,136,108],[10,74,46,1,75,47],[1,50,22,15,51,23],[2,42,14,17,43,15],[5,150,120,1,151,121],[9,69,43,4,70,44],[17,50,22,1,51,23],[2,42,14,19,43,15],[3,141,113,4,142,114],[3,70,44,11,71,45],[17,47,21,4,48,22],[9,39,13,16,40,14],[3,135,107,5,136,108],[3,67,41,13,68,42],[15,54,24,5,55,25],[15,43,15,10,44,16],[4,144,116,4,145,117],[17,68,42],[17,50,22,6,51,23],[19,46,16,6,47,17],[2,139,111,7,140,112],[17,74,46],[7,54,24,16,55,25],[34,37,13],[4,151,121,5,152,122],[4,75,47,14,76,48],[11,54,24,14,55,25],[16,45,15,14,46,16],[6,147,117,4,148,118],[6,73,45,14,74,46],[11,54,24,16,55,25],[30,46,16,2,47,17],[8,132,106,4,133,107],[8,75,47,13,76,48],[7,54,24,22,55,25],[22,45,15,13,46,16],[10,142,114,2,143,115],[19,74,46,4,75,47],[28,50,22,6,51,23],[33,46,16,4,47,17],[8,152,122,4,153,123],[22,73,45,3,74,46],[8,53,23,26,54,24],[12,45,15,28,46,16],[3,147,117,10,148,118],[3,73,45,23,74,46],[4,54,24,31,55,25],[11,45,15,31,46,16],[7,146,116,7,147,117],[21,73,45,7,74,46],[1,53,23,37,54,24],[19,45,15,26,46,16],[5,145,115,10,146,116],[19,75,47,10,76,48],[15,54,24,25,55,25],[23,45,15,25,46,16],[13,145,115,3,146,116],[2,74,46,29,75,47],[42,54,24,1,55,25],[23,45,15,28,46,16],[17,145,115],[10,74,46,23,75,47],[10,54,24,35,55,25],[19,45,15,35,46,16],[17,145,115,1,146,116],[14,74,46,21,75,47],[29,54,24,19,55,25],[11,45,15,46,46,16],[13,145,115,6,146,116],[14,74,46,23,75,47],[44,54,24,7,55,25],[59,46,16,1,47,17],[12,151,121,7,152,122],[12,75,47,26,76,48],[39,54,24,14,55,25],[22,45,15,41,46,16],[6,151,121,14,152,122],[6,75,47,34,76,48],[46,54,24,10,55,25],[2,45,15,64,46,16],[17,152,122,4,153,123],[29,74,46,14,75,47],[49,54,24,10,55,25],[24,45,15,46,46,16],[4,152,122,18,153,123],[13,74,46,32,75,47],[48,54,24,14,55,25],[42,45,15,32,46,16],[20,147,117,4,148,118],[40,75,47,7,76,48],[43,54,24,22,55,25],[10,45,15,67,46,16],[19,148,118,6,149,119],[18,75,47,31,76,48],[34,54,24,34,55,25],[20,45,15,61,46,16]];i.prototype.getRightType=function(){for(var t=1;41>t;t++){var e=c[4*(t-1)+this.errorCorrectLevel];if(void 0==e)throw new Error("bad rs block @ typeNumber:"+t+"/errorCorrectLevel:"+this.errorCorrectLevel);for(var r=e.length/3,o=0,i=0;r>i;i++){var n=e[3*i+0],s=e[3*i+2];o+=s*n}var u=t>9?2:1;if(this.utf8bytes.length+u<o||40==t){this.typeNumber=t,this.rsBlock=e,this.totalDataCount=o;break}}},s.prototype={get:function(t){var e=Math.floor(t/8);return this.buffer[e]>>>7-t%8&1},put:function(t,e){for(var r=0;e>r;r++)this.putBit(t>>>e-r-1&1)},putBit:function(t){var e=Math.floor(this.length/8);this.buffer.length<=e&&this.buffer.push(0),t&&(this.buffer[e]|=128>>>this.length%8),this.length++}},t.exports=i},function(t,e){t.exports=function(t){for(var e,r=Array.prototype.slice.call(arguments,1),o=0;e=r[o];o++)if(e)for(var i in e)t[i]=e[i];return t}}]);
\ No newline at end of file
diff --git a/dist/arale-qrcode/3.0.6/index.js b/dist/arale-qrcode/3.0.6/index.js
new file mode 100644
index 0000000..6e54e5a
--- /dev/null
+++ b/dist/arale-qrcode/3.0.6/index.js
@@ -0,0 +1 @@
+this.AraleQRCode=function(t){function e(o){if(r[o])return r[o].exports;var i=r[o]={exports:{},id:o,loaded:!1};return t[o].call(i.exports,i,i.exports,e),i.loaded=!0,i.exports}var r={};return e.m=t,e.c=r,e.p="",e(0)}([function(t,e,r){t.exports=r(1)},function(t,e,r){"use strict";t.exports=r(2)},function(t,e,r){"use strict";var o=r(4),i=[],n=r(3),s=function(t){var e=t.options;return e.pdground&&(t.row>1&&t.row<5&&t.col>1&&t.col<5||t.row>t.count-6&&t.row<t.count-2&&t.col>1&&t.col<5||t.row>1&&t.row<5&&t.col>t.count-6&&t.col<t.count-2)?e.pdground:e.foreground},u=function(t){var e=t.backingStorePixelRatio||t.webkitBackingStorePixelRatio||t.mozBackingStorePixelRatio||t.msBackingStorePixelRatio||t.oBackingStorePixelRatio||t.backingStorePixelRatio||1;return(window.devicePixelRatio||1)/e},a=function(t){"string"==typeof t&&(t={text:t}),this.options=o({},{text:"",render:"",size:256,correctLevel:3,background:"#ffffff",foreground:"#000000",image:"",imageSize:30,canvasClass:"canvas-qrcode"},t);for(var e=null,r=0,s=i.length;s>r;r++)if(i[r].text==this.options.text&&i[r].text.correctLevel==this.options.correctLevel){e=i[r].obj;break}if(r==s&&(e=new n(this.options.text,this.options.correctLevel),i.push({text:this.options.text,correctLevel:this.options.correctLevel,obj:e})),this.options.render)switch(this.options.render){case"canvas":return this.createCanvas(e);case"table":return this.createTable(e);case"svg":return this.createSVG(e);default:return this.createDefault(e)}return this.createDefault(e)};o(a.prototype,{createDefault:function(t){var e=document.createElement("canvas");if(e.getContext)return this.createCanvas(t);var r="http://www.w3.org/2000/svg";return document.createElementNS&&document.createElementNS(r,"svg").createSVGRect?this.createSVG(t):this.createTable(t)},createCanvas:function(t){var e=this.options,r=document.createElement("canvas"),o=r.getContext("2d"),i=t.getModuleCount(),n=u(o),a=e.size,l=a*n,h=e.imageSize*n,g=function(t,e){var r=new Image;r.src=t,r.onload=function(){e(this),r.onload=null}},c=Math.floor(a/i),d=Math.floor(a/i);0>=c&&(c=80>i?2:1),0>=d&&(d=80>i?2:1);var f=c*n,m=d*n;r.width=f*i,r.height=m*i;for(var p=Math.floor(h*(r.width/l)),v=0;i>v;v++)for(var b=0;i>b;b++){var w=Math.ceil((b+1)*f)-Math.floor(b*f),A=Math.ceil((v+1)*m)-Math.floor(v*m),T=s({row:v,col:b,count:i,options:e});o.fillStyle=t.modules[v][b]?T:e.background,o.fillRect(Math.round(b*f),Math.round(v*m),w,A)}e.image&&g(e.image,function(t){var e=((r.width-p)/2).toFixed(2),i=((r.height-p)/2).toFixed(2);o.drawImage(t,e,i,p,p)}),r.style.width=c*i+"px",r.style.height=d*i+"px";var C=[];C.push('<span class="'+e.canvasClass+'" style="width: '+c*i+"px;height: "+c*i+"px;\n            padding: "+(a-c*i)/2+'px; display: inline-block">'),C.push("</span>");var x=document.createElement("span");return x.innerHTML=C.join(""),x.firstChild.appendChild(r),x.firstChild},createTable:function(t){var e=this.options,r=t.getModuleCount(),o=Math.floor(e.size/r),i=Math.floor(e.size/r);0>=o&&(o=80>r?2:1),0>=i&&(i=80>r?2:1);var n=[];n.push('<table style="border:0px; margin:0px; padding:0px; border-collapse:collapse; background-color:'+e.background+';">');for(var u=0;r>u;u++){n.push('<tr style="border:0px; margin:0px; padding:0px; height:'+i+'px">');for(var a=0;r>a;a++){var l=s({row:u,col:a,count:r,options:e});t.modules[u][a]?n.push('<td style="border:0px; margin:0px; padding:0px; width:'+o+"px; background-color:"+l+'"></td>'):n.push('<td style="border:0px; margin:0px; padding:0px; width:'+o+"px; background-color:"+e.background+'"></td>')}n.push("</tr>")}if(n.push("</table>"),e.image){var h=o*r,g=i*r,c=((h-e.imageSize)/2).toFixed(2),d=((g-e.imageSize)/2).toFixed(2);n.unshift("<div style='position:relative;\n                        width:"+h+"px;\n                        height:"+g+"px;'>"),n.push("<img src='"+e.image+"'\n                        width='"+e.imageSize+"'\n                        height='"+e.imageSize+"'\n                        style='position:absolute;left:"+c+"px; top:"+d+"px;'>"),n.push("</div>")}var f=document.createElement("span");return f.innerHTML=n.join(""),f.firstChild},createSVG:function(t){var e=this.options,r=t.getModuleCount(),o=r/e.size,i=document.createElementNS("http://www.w3.org/2000/svg","svg");i.setAttribute("width",e.size),i.setAttribute("height",e.size),i.setAttribute("viewBox","0 0 "+r+" "+r);for(var n=0;r>n;n++)for(var u=0;r>u;u++){var a=document.createElementNS("http://www.w3.org/2000/svg","rect"),l=s({row:n,col:u,count:r,options:e});a.setAttribute("x",u),a.setAttribute("y",n),a.setAttribute("width",1),a.setAttribute("height",1),a.setAttribute("stroke-width",0),t.modules[n][u]?a.setAttribute("fill",l):a.setAttribute("fill",e.background),i.appendChild(a)}if(e.image){var h=document.createElementNS("http://www.w3.org/2000/svg","image");h.setAttributeNS("http://www.w3.org/1999/xlink","href",e.image),h.setAttribute("x",((r-e.imageSize*o)/2).toFixed(2)),h.setAttribute("y",((r-e.imageSize*o)/2).toFixed(2)),h.setAttribute("width",e.imageSize*o),h.setAttribute("height",e.imageSize*o),i.appendChild(h)}return i}}),t.exports=a},function(t,e){"use strict";function r(t){var e,r,o;return 128>t?[t]:2048>t?(e=192+(t>>6),r=128+(63&t),[e,r]):(e=224+(t>>12),r=128+(t>>6&63),o=128+(63&t),[e,r,o])}function o(t){for(var e=[],o=0;o<t.length;o++)for(var i=t.charCodeAt(o),n=r(i),s=0;s<n.length;s++)e.push(n[s]);return e}function i(t,e){this.typeNumber=-1,this.errorCorrectLevel=e,this.modules=null,this.moduleCount=0,this.dataCache=null,this.rsBlocks=null,this.totalDataCount=-1,this.data=t,this.utf8bytes=o(t),this.make()}function n(t,e){if(void 0==t.length)throw new Error(t.length+"/"+e);for(var r=0;r<t.length&&0==t[r];)r++;this.num=new Array(t.length-r+e);for(var o=0;o<t.length-r;o++)this.num[o]=t[o+r]}function s(){this.buffer=new Array,this.length=0}i.prototype={constructor:i,getModuleCount:function(){return this.moduleCount},make:function(){this.getRightType(),this.dataCache=this.createData(),this.createQrcode()},makeImpl:function(t){this.moduleCount=4*this.typeNumber+17,this.modules=new Array(this.moduleCount);for(var e=0;e<this.moduleCount;e++)this.modules[e]=new Array(this.moduleCount);this.setupPositionProbePattern(0,0),this.setupPositionProbePattern(this.moduleCount-7,0),this.setupPositionProbePattern(0,this.moduleCount-7),this.setupPositionAdjustPattern(),this.setupTimingPattern(),this.setupTypeInfo(!0,t),this.typeNumber>=7&&this.setupTypeNumber(!0),this.mapData(this.dataCache,t)},setupPositionProbePattern:function(t,e){for(var r=-1;7>=r;r++)if(!(-1>=t+r||this.moduleCount<=t+r))for(var o=-1;7>=o;o++)-1>=e+o||this.moduleCount<=e+o||(r>=0&&6>=r&&(0==o||6==o)||o>=0&&6>=o&&(0==r||6==r)||r>=2&&4>=r&&o>=2&&4>=o?this.modules[t+r][e+o]=!0:this.modules[t+r][e+o]=!1)},createQrcode:function(){for(var t=0,e=0,r=null,o=0;8>o;o++){this.makeImpl(o);var i=l.getLostPoint(this);(0==o||t>i)&&(t=i,e=o,r=this.modules)}this.modules=r,this.setupTypeInfo(!1,e),this.typeNumber>=7&&this.setupTypeNumber(!1)},setupTimingPattern:function(){for(var t=8;t<this.moduleCount-8;t++)null==this.modules[t][6]&&(this.modules[t][6]=t%2==0,null==this.modules[6][t]&&(this.modules[6][t]=t%2==0))},setupPositionAdjustPattern:function(){for(var t=l.getPatternPosition(this.typeNumber),e=0;e<t.length;e++)for(var r=0;r<t.length;r++){var o=t[e],i=t[r];if(null==this.modules[o][i])for(var n=-2;2>=n;n++)for(var s=-2;2>=s;s++)-2==n||2==n||-2==s||2==s||0==n&&0==s?this.modules[o+n][i+s]=!0:this.modules[o+n][i+s]=!1}},setupTypeNumber:function(t){for(var e=l.getBCHTypeNumber(this.typeNumber),r=0;18>r;r++){var o=!t&&1==(e>>r&1);this.modules[Math.floor(r/3)][r%3+this.moduleCount-8-3]=o,this.modules[r%3+this.moduleCount-8-3][Math.floor(r/3)]=o}},setupTypeInfo:function(t,e){for(var r=u[this.errorCorrectLevel]<<3|e,o=l.getBCHTypeInfo(r),i=0;15>i;i++){var n=!t&&1==(o>>i&1);6>i?this.modules[i][8]=n:8>i?this.modules[i+1][8]=n:this.modules[this.moduleCount-15+i][8]=n;var n=!t&&1==(o>>i&1);8>i?this.modules[8][this.moduleCount-i-1]=n:9>i?this.modules[8][15-i-1+1]=n:this.modules[8][15-i-1]=n}this.modules[this.moduleCount-8][8]=!t},createData:function(){var t=new s,e=this.typeNumber>9?16:8;t.put(4,4),t.put(this.utf8bytes.length,e);for(var r=0,o=this.utf8bytes.length;o>r;r++)t.put(this.utf8bytes[r],8);for(t.length+4<=8*this.totalDataCount&&t.put(0,4);t.length%8!=0;)t.putBit(!1);for(;;){if(t.length>=8*this.totalDataCount)break;if(t.put(i.PAD0,8),t.length>=8*this.totalDataCount)break;t.put(i.PAD1,8)}return this.createBytes(t)},createBytes:function(t){for(var e=0,r=0,o=0,i=this.rsBlock.length/3,s=new Array,u=0;i>u;u++)for(var a=this.rsBlock[3*u+0],h=this.rsBlock[3*u+1],g=this.rsBlock[3*u+2],c=0;a>c;c++)s.push([g,h]);for(var d=new Array(s.length),f=new Array(s.length),m=0;m<s.length;m++){var p=s[m][0],v=s[m][1]-p;r=Math.max(r,p),o=Math.max(o,v),d[m]=new Array(p);for(var u=0;u<d[m].length;u++)d[m][u]=255&t.buffer[u+e];e+=p;var b=l.getErrorCorrectPolynomial(v),w=new n(d[m],b.getLength()-1),A=w.mod(b);f[m]=new Array(b.getLength()-1);for(var u=0;u<f[m].length;u++){var T=u+A.getLength()-f[m].length;f[m][u]=T>=0?A.get(T):0}}for(var C=new Array(this.totalDataCount),x=0,u=0;r>u;u++)for(var m=0;m<s.length;m++)u<d[m].length&&(C[x++]=d[m][u]);for(var u=0;o>u;u++)for(var m=0;m<s.length;m++)u<f[m].length&&(C[x++]=f[m][u]);return C},mapData:function(t,e){for(var r=-1,o=this.moduleCount-1,i=7,n=0,s=this.moduleCount-1;s>0;s-=2)for(6==s&&s--;;){for(var u=0;2>u;u++)if(null==this.modules[o][s-u]){var a=!1;n<t.length&&(a=1==(t[n]>>>i&1));var h=l.getMask(e,o,s-u);h&&(a=!a),this.modules[o][s-u]=a,i--,-1==i&&(n++,i=7)}if(o+=r,0>o||this.moduleCount<=o){o-=r,r=-r;break}}}},i.PAD0=236,i.PAD1=17;for(var u=[1,0,3,2],a={PATTERN000:0,PATTERN001:1,PATTERN010:2,PATTERN011:3,PATTERN100:4,PATTERN101:5,PATTERN110:6,PATTERN111:7},l={PATTERN_POSITION_TABLE:[[],[6,18],[6,22],[6,26],[6,30],[6,34],[6,22,38],[6,24,42],[6,26,46],[6,28,50],[6,30,54],[6,32,58],[6,34,62],[6,26,46,66],[6,26,48,70],[6,26,50,74],[6,30,54,78],[6,30,56,82],[6,30,58,86],[6,34,62,90],[6,28,50,72,94],[6,26,50,74,98],[6,30,54,78,102],[6,28,54,80,106],[6,32,58,84,110],[6,30,58,86,114],[6,34,62,90,118],[6,26,50,74,98,122],[6,30,54,78,102,126],[6,26,52,78,104,130],[6,30,56,82,108,134],[6,34,60,86,112,138],[6,30,58,86,114,142],[6,34,62,90,118,146],[6,30,54,78,102,126,150],[6,24,50,76,102,128,154],[6,28,54,80,106,132,158],[6,32,58,84,110,136,162],[6,26,54,82,110,138,166],[6,30,58,86,114,142,170]],G15:1335,G18:7973,G15_MASK:21522,getBCHTypeInfo:function(t){for(var e=t<<10;l.getBCHDigit(e)-l.getBCHDigit(l.G15)>=0;)e^=l.G15<<l.getBCHDigit(e)-l.getBCHDigit(l.G15);return(t<<10|e)^l.G15_MASK},getBCHTypeNumber:function(t){for(var e=t<<12;l.getBCHDigit(e)-l.getBCHDigit(l.G18)>=0;)e^=l.G18<<l.getBCHDigit(e)-l.getBCHDigit(l.G18);return t<<12|e},getBCHDigit:function(t){for(var e=0;0!=t;)e++,t>>>=1;return e},getPatternPosition:function(t){return l.PATTERN_POSITION_TABLE[t-1]},getMask:function(t,e,r){switch(t){case a.PATTERN000:return(e+r)%2==0;case a.PATTERN001:return e%2==0;case a.PATTERN010:return r%3==0;case a.PATTERN011:return(e+r)%3==0;case a.PATTERN100:return(Math.floor(e/2)+Math.floor(r/3))%2==0;case a.PATTERN101:return e*r%2+e*r%3==0;case a.PATTERN110:return(e*r%2+e*r%3)%2==0;case a.PATTERN111:return(e*r%3+(e+r)%2)%2==0;default:throw new Error("bad maskPattern:"+t)}},getErrorCorrectPolynomial:function(t){for(var e=new n([1],0),r=0;t>r;r++)e=e.multiply(new n([1,h.gexp(r)],0));return e},getLostPoint:function(t){for(var e=t.getModuleCount(),r=0,o=0,i=0;e>i;i++)for(var n=0,s=t.modules[i][0],u=0;e>u;u++){var a=t.modules[i][u];if(e-6>u&&a&&!t.modules[i][u+1]&&t.modules[i][u+2]&&t.modules[i][u+3]&&t.modules[i][u+4]&&!t.modules[i][u+5]&&t.modules[i][u+6]&&(e-10>u?t.modules[i][u+7]&&t.modules[i][u+8]&&t.modules[i][u+9]&&t.modules[i][u+10]&&(r+=40):u>3&&t.modules[i][u-1]&&t.modules[i][u-2]&&t.modules[i][u-3]&&t.modules[i][u-4]&&(r+=40)),e-1>i&&e-1>u){var l=0;a&&l++,t.modules[i+1][u]&&l++,t.modules[i][u+1]&&l++,t.modules[i+1][u+1]&&l++,(0==l||4==l)&&(r+=3)}s^a?n++:(s=a,n>=5&&(r+=3+n-5),n=1),a&&o++}for(var u=0;e>u;u++)for(var n=0,s=t.modules[0][u],i=0;e>i;i++){var a=t.modules[i][u];e-6>i&&a&&!t.modules[i+1][u]&&t.modules[i+2][u]&&t.modules[i+3][u]&&t.modules[i+4][u]&&!t.modules[i+5][u]&&t.modules[i+6][u]&&(e-10>i?t.modules[i+7][u]&&t.modules[i+8][u]&&t.modules[i+9][u]&&t.modules[i+10][u]&&(r+=40):i>3&&t.modules[i-1][u]&&t.modules[i-2][u]&&t.modules[i-3][u]&&t.modules[i-4][u]&&(r+=40)),s^a?n++:(s=a,n>=5&&(r+=3+n-5),n=1)}var h=Math.abs(100*o/e/e-50)/5;return r+=10*h}},h={glog:function(t){if(1>t)throw new Error("glog("+t+")");return h.LOG_TABLE[t]},gexp:function(t){for(;0>t;)t+=255;for(;t>=256;)t-=255;return h.EXP_TABLE[t]},EXP_TABLE:new Array(256),LOG_TABLE:new Array(256)},g=0;8>g;g++)h.EXP_TABLE[g]=1<<g;for(var g=8;256>g;g++)h.EXP_TABLE[g]=h.EXP_TABLE[g-4]^h.EXP_TABLE[g-5]^h.EXP_TABLE[g-6]^h.EXP_TABLE[g-8];for(var g=0;255>g;g++)h.LOG_TABLE[h.EXP_TABLE[g]]=g;n.prototype={get:function(t){return this.num[t]},getLength:function(){return this.num.length},multiply:function(t){for(var e=new Array(this.getLength()+t.getLength()-1),r=0;r<this.getLength();r++)for(var o=0;o<t.getLength();o++)e[r+o]^=h.gexp(h.glog(this.get(r))+h.glog(t.get(o)));return new n(e,0)},mod:function(t){var e=this.getLength(),r=t.getLength();if(0>e-r)return this;for(var o=new Array(e),i=0;e>i;i++)o[i]=this.get(i);for(;o.length>=r;){for(var s=h.glog(o[0])-h.glog(t.get(0)),i=0;i<t.getLength();i++)o[i]^=h.gexp(h.glog(t.get(i))+s);for(;0==o[0];)o.shift()}return new n(o,0)}};var c=[[1,26,19],[1,26,16],[1,26,13],[1,26,9],[1,44,34],[1,44,28],[1,44,22],[1,44,16],[1,70,55],[1,70,44],[2,35,17],[2,35,13],[1,100,80],[2,50,32],[2,50,24],[4,25,9],[1,134,108],[2,67,43],[2,33,15,2,34,16],[2,33,11,2,34,12],[2,86,68],[4,43,27],[4,43,19],[4,43,15],[2,98,78],[4,49,31],[2,32,14,4,33,15],[4,39,13,1,40,14],[2,121,97],[2,60,38,2,61,39],[4,40,18,2,41,19],[4,40,14,2,41,15],[2,146,116],[3,58,36,2,59,37],[4,36,16,4,37,17],[4,36,12,4,37,13],[2,86,68,2,87,69],[4,69,43,1,70,44],[6,43,19,2,44,20],[6,43,15,2,44,16],[4,101,81],[1,80,50,4,81,51],[4,50,22,4,51,23],[3,36,12,8,37,13],[2,116,92,2,117,93],[6,58,36,2,59,37],[4,46,20,6,47,21],[7,42,14,4,43,15],[4,133,107],[8,59,37,1,60,38],[8,44,20,4,45,21],[12,33,11,4,34,12],[3,145,115,1,146,116],[4,64,40,5,65,41],[11,36,16,5,37,17],[11,36,12,5,37,13],[5,109,87,1,110,88],[5,65,41,5,66,42],[5,54,24,7,55,25],[11,36,12],[5,122,98,1,123,99],[7,73,45,3,74,46],[15,43,19,2,44,20],[3,45,15,13,46,16],[1,135,107,5,136,108],[10,74,46,1,75,47],[1,50,22,15,51,23],[2,42,14,17,43,15],[5,150,120,1,151,121],[9,69,43,4,70,44],[17,50,22,1,51,23],[2,42,14,19,43,15],[3,141,113,4,142,114],[3,70,44,11,71,45],[17,47,21,4,48,22],[9,39,13,16,40,14],[3,135,107,5,136,108],[3,67,41,13,68,42],[15,54,24,5,55,25],[15,43,15,10,44,16],[4,144,116,4,145,117],[17,68,42],[17,50,22,6,51,23],[19,46,16,6,47,17],[2,139,111,7,140,112],[17,74,46],[7,54,24,16,55,25],[34,37,13],[4,151,121,5,152,122],[4,75,47,14,76,48],[11,54,24,14,55,25],[16,45,15,14,46,16],[6,147,117,4,148,118],[6,73,45,14,74,46],[11,54,24,16,55,25],[30,46,16,2,47,17],[8,132,106,4,133,107],[8,75,47,13,76,48],[7,54,24,22,55,25],[22,45,15,13,46,16],[10,142,114,2,143,115],[19,74,46,4,75,47],[28,50,22,6,51,23],[33,46,16,4,47,17],[8,152,122,4,153,123],[22,73,45,3,74,46],[8,53,23,26,54,24],[12,45,15,28,46,16],[3,147,117,10,148,118],[3,73,45,23,74,46],[4,54,24,31,55,25],[11,45,15,31,46,16],[7,146,116,7,147,117],[21,73,45,7,74,46],[1,53,23,37,54,24],[19,45,15,26,46,16],[5,145,115,10,146,116],[19,75,47,10,76,48],[15,54,24,25,55,25],[23,45,15,25,46,16],[13,145,115,3,146,116],[2,74,46,29,75,47],[42,54,24,1,55,25],[23,45,15,28,46,16],[17,145,115],[10,74,46,23,75,47],[10,54,24,35,55,25],[19,45,15,35,46,16],[17,145,115,1,146,116],[14,74,46,21,75,47],[29,54,24,19,55,25],[11,45,15,46,46,16],[13,145,115,6,146,116],[14,74,46,23,75,47],[44,54,24,7,55,25],[59,46,16,1,47,17],[12,151,121,7,152,122],[12,75,47,26,76,48],[39,54,24,14,55,25],[22,45,15,41,46,16],[6,151,121,14,152,122],[6,75,47,34,76,48],[46,54,24,10,55,25],[2,45,15,64,46,16],[17,152,122,4,153,123],[29,74,46,14,75,47],[49,54,24,10,55,25],[24,45,15,46,46,16],[4,152,122,18,153,123],[13,74,46,32,75,47],[48,54,24,14,55,25],[42,45,15,32,46,16],[20,147,117,4,148,118],[40,75,47,7,76,48],[43,54,24,22,55,25],[10,45,15,67,46,16],[19,148,118,6,149,119],[18,75,47,31,76,48],[34,54,24,34,55,25],[20,45,15,61,46,16]];i.prototype.getRightType=function(){for(var t=1;41>t;t++){var e=c[4*(t-1)+this.errorCorrectLevel];if(void 0==e)throw new Error("bad rs block @ typeNumber:"+t+"/errorCorrectLevel:"+this.errorCorrectLevel);for(var r=e.length/3,o=0,i=0;r>i;i++){var n=e[3*i+0],s=e[3*i+2];o+=s*n}var u=t>9?2:1;if(this.utf8bytes.length+u<o||40==t){this.typeNumber=t,this.rsBlock=e,this.totalDataCount=o;break}}},s.prototype={get:function(t){var e=Math.floor(t/8);return this.buffer[e]>>>7-t%8&1},put:function(t,e){for(var r=0;e>r;r++)this.putBit(t>>>e-r-1&1)},putBit:function(t){var e=Math.floor(this.length/8);this.buffer.length<=e&&this.buffer.push(0),t&&(this.buffer[e]|=128>>>this.length%8),this.length++}},t.exports=i},function(t,e){t.exports=function(t){for(var e,r=Array.prototype.slice.call(arguments,1),o=0;e=r[o];o++)if(e)for(var i in e)t[i]=e[i];return t}}]);
\ No newline at end of file
diff --git a/examples/index.md b/examples/index.md
index 743ce9d..dc813ed 100644
--- a/examples/index.md
+++ b/examples/index.md
@@ -2,7 +2,7 @@
 
 ---
 
-## 采用默认方式画二维码"
+## 采用默认方式画二维码
 
 
 ````html
diff --git a/package.json b/package.json
index ae027f7..b1d3a4c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "arale-qrcode",
-  "version": "3.0.5",
+  "version": "3.0.6",
   "description": "二维码绘制模块",
   "homepage": "http://aralejs.org/qrcode/",
   "author": "倚松 <jiasong.hjs@alibaba-inc.com>",
diff --git a/src/index.js b/src/index.js
index c2ef794..fe59757 100644
--- a/src/index.js
+++ b/src/index.js
@@ -28,7 +28,7 @@ var getForeGround = function(config){
 * @param  {col} 矩阵列
 * @param  {count} 矩阵大小
 * @return {Boolean}
-*/
+
 var inPositionDetection = function(row, col, count){
     if(
         (row<7 && col<7)
@@ -39,6 +39,7 @@ var inPositionDetection = function(row, col, count){
     }
     return false;
 }
+*/
 /**
 * 获取当前屏幕的设备像素比 devicePixelRatio/backingStore
 * @param {context} 当前 canvas 上下文，可以为 window
@@ -75,7 +76,8 @@ var qrcode = function(opt) {
         background: '#ffffff',
         foreground: '#000000',
         image : '',
-        imageSize: 30
+        imageSize: 30,
+        canvasClass: 'canvas-qrcode'
     }, opt);
 
     //使用QRCodeAlg创建二维码结构
@@ -140,18 +142,28 @@ extend(qrcode.prototype,{
             };
         }
 
-        //计算每个点的长宽
-        var tileW = (ratioSize / count).toPrecision(4);
-        var tileH = (ratioSize / count).toPrecision(4);
+        // 计算每个节点的长宽；取整，防止点之间出现分离
+        var tileW = Math.floor(size / count);
+        var tileH = Math.floor(size / count);
+        if(tileW <= 0){
+            tileW = count < 80 ? 2 : 1;
+        }
+        if(tileH <= 0){
+            tileH = count < 80 ? 2 : 1;
+        }
 
-        canvas.width = ratioSize;
-        canvas.height = ratioSize;
+        var ratioTileW = tileW * ratio;
+        var ratioTileH = tileH * ratio;
+        canvas.width = ratioTileW * count;
+        canvas.height = ratioTileH * count;
+
+        var currImageSize = Math.floor(ratioImgSize * (canvas.width / ratioSize));
 
         //绘制
         for (var row = 0; row < count; row++) {
             for (var col = 0; col < count; col++) {
-                var w = (Math.ceil((col + 1) * tileW) - Math.floor(col * tileW));
-                var h = (Math.ceil((row + 1) * tileW) - Math.floor(row * tileW));
+                var w = (Math.ceil((col + 1) * ratioTileW) - Math.floor(col * ratioTileW));
+                var h = (Math.ceil((row + 1) * ratioTileH) - Math.floor(row * ratioTileH));
                 var foreground = getForeGround({
                     row : row,
                     col : col,
@@ -159,19 +171,27 @@ extend(qrcode.prototype,{
                     options : options
                 });
                 ctx.fillStyle = qrCodeAlg.modules[row][col] ? foreground : options.background;
-                ctx.fillRect(Math.round(col * tileW), Math.round(row * tileH), w, h);
+                ctx.fillRect(Math.round(col * ratioTileW), Math.round(row * ratioTileH), w, h);
             }
         }
         if(options.image){
             loadImage(options.image, function(img){
-                var x = ((ratioSize - ratioImgSize)/2).toFixed(2);
-                var y = ((ratioSize - ratioImgSize)/2).toFixed(2);
-                ctx.drawImage(img, x, y, ratioImgSize, ratioImgSize);
+                var x = ((canvas.width - currImageSize)/2).toFixed(2);
+                var y = ((canvas.height - currImageSize)/2).toFixed(2);
+                ctx.drawImage(img, x, y, currImageSize, currImageSize);
             });
         }
-        canvas.style.width = size + 'px';
-        canvas.style.height = size + 'px';
-        return canvas;
+        canvas.style.width = tileW * count + 'px';
+        canvas.style.height = tileH * count + 'px';
+        var s = [];
+        s.push(`<span class="${options.canvasClass}" style="width: ${tileW * count}px;height: ${tileW * count}px;
+            padding: ${(size-tileW * count)/2}px; display: inline-block">`);
+        s.push('</span>');
+        var span = document.createElement('span');
+        span.innerHTML = s.join('');
+        span.firstChild.appendChild(canvas);
+
+        return span.firstChild;
     },
     // table create
     createTable (qrCodeAlg) {
diff --git a/tests/qrcode-spec.js b/tests/qrcode-spec.js
index c1677eb..690c016 100644
--- a/tests/qrcode-spec.js
+++ b/tests/qrcode-spec.js
@@ -39,6 +39,16 @@ describe('qrcode', function() {
       foreground:'#011'
     });
   });
+  it('设置二维码容错水平', function() {
+    var qrnode = new qrcode({
+      correctLevel: 2
+    });
+  });
+  it('设置二维码className', function() {
+    var qrnode = new qrcode({
+      canvasClass: 'test-class'
+    });
+  });
   it('以table来显示', function() {
     var qrnode = new qrcode({
       render:'table'
@@ -60,10 +70,11 @@ describe('qrcode', function() {
     });
   });
   it('最长字符串', function() {
-    var s = '';
-    for(var i = 0; i < 2953; i++){
+    var s = '0123456789';
+    for(var i = 0; i < 295; i+=10){
       s += i%10;
     }
+    s+='012';
     var qrnode = new qrcode({
       width:500,
       height:500,
@@ -73,8 +84,9 @@ describe('qrcode', function() {
   });
   it('超过最长字符串容错处理，截取前2953个字符', function() {
     var s = '';
-    for(var i = 0; i < 3000; i++){
-      s += i%10;
+    var t = '01234567890123456789';
+    for(var i = 0; i < 150; i+=20){
+      s += t;
     }
     var qrnode = new qrcode({
       width:500,