Merge pull request #26 from q310550690/master

增加二维码生成器

examples/hello-uniapp/components/qrcode/qrcode.js

+function qrPolynomial(r,t){if("undefined"==typeof r.length)throw new Error(r.length+"/"+t);var e=function(){for(var e=0;e<r.length&&0==r[e];)e+=1;for(var n=new Array(r.length-e+t),o=0;o<r.length-e;o+=1)n[o]=r[o+e];return n}(),n={};return n.getAt=function(r){return e[r]},n.getLength=function(){return e.length},n.multiply=function(r){for(var t=new Array(n.getLength()+r.getLength()-1),e=0;e<n.getLength();e+=1)for(var o=0;o<r.getLength();o+=1)t[e+o]^=QRMath.gexp(QRMath.glog(n.getAt(e))+QRMath.glog(r.getAt(o)));return qrPolynomial(t,0)},n.mod=function(r){if(n.getLength()-r.getLength()<0)return n;for(var t=QRMath.glog(n.getAt(0))-QRMath.glog(r.getAt(0)),e=new Array(n.getLength()),o=0;o<n.getLength();o+=1)e[o]=n.getAt(o);for(var o=0;o<r.getLength();o+=1)e[o]^=QRMath.gexp(QRMath.glog(r.getAt(o))+t);return qrPolynomial(e,0).mod(r)},n}var qrcode=function(r,t){var e=236,n=17,o=r,a=QRErrorCorrectLevel[t],i=null,u=0,f=null,c=new Array,g={},l=function(r,t){u=4*o+17,i=function(r){for(var t=new Array(r),e=0;e<r;e+=1){t[e]=new Array(r);for(var n=0;n<r;n+=1)t[e][n]=null}return t}(u),h(0,0),h(u-7,0),h(0,u-7),d(),s(),y(r,t),o>=7&&w(r),null==f&&(f=p(o,a,c)),M(f,t)},h=function(r,t){for(var e=-1;e<=7;e+=1)if(!(r+e<=-1||u<=r+e))for(var n=-1;n<=7;n+=1)t+n<=-1||u<=t+n||(0<=e&&e<=6&&(0==n||6==n)||0<=n&&n<=6&&(0==e||6==e)||2<=e&&e<=4&&2<=n&&n<=4?i[r+e][t+n]=!0:i[r+e][t+n]=!1)},v=function(){for(var r=0,t=0,e=0;e<8;e+=1){l(!0,e);var n=QRUtil.getLostPoint(g);(0==e||r>n)&&(r=n,t=e)}return t},s=function(){for(var r=8;r<u-8;r+=1)null==i[r][6]&&(i[r][6]=r%2==0);for(var t=8;t<u-8;t+=1)null==i[6][t]&&(i[6][t]=t%2==0)},d=function(){for(var r=QRUtil.getPatternPosition(o),t=0;t<r.length;t+=1)for(var e=0;e<r.length;e+=1){var n=r[t],a=r[e];if(null==i[n][a])for(var u=-2;u<=2;u+=1)for(var f=-2;f<=2;f+=1)u==-2||2==u||f==-2||2==f||0==u&&0==f?i[n+u][a+f]=!0:i[n+u][a+f]=!1}},w=function(r){for(var t=QRUtil.getBCHTypeNumber(o),e=0;e<18;e+=1){var n=!r&&1==(t>>e&1);i[Math.floor(e/3)][e%3+u-8-3]=n}for(var e=0;e<18;e+=1){var n=!r&&1==(t>>e&1);i[e%3+u-8-3][Math.floor(e/3)]=n}},y=function(r,t){for(var e=a<<3|t,n=QRUtil.getBCHTypeInfo(e),o=0;o<15;o+=1){var f=!r&&1==(n>>o&1);o<6?i[o][8]=f:o<8?i[o+1][8]=f:i[u-15+o][8]=f}for(var o=0;o<15;o+=1){var f=!r&&1==(n>>o&1);o<8?i[8][u-o-1]=f:o<9?i[8][15-o-1+1]=f:i[8][15-o-1]=f}i[u-8][8]=!r},M=function(r,t){for(var e=-1,n=u-1,o=7,a=0,f=QRUtil.getMaskFunction(t),c=u-1;c>0;c-=2)for(6==c&&(c-=1);;){for(var g=0;g<2;g+=1)if(null==i[n][c-g]){var l=!1;a<r.length&&(l=1==(r[a]>>>o&1));var h=f(n,c-g);h&&(l=!l),i[n][c-g]=l,o-=1,o==-1&&(a+=1,o=7)}if(n+=e,n<0||u<=n){n-=e,e=-e;break}}},B=function(r,t){for(var e=0,n=0,o=0,a=new Array(t.length),i=new Array(t.length),u=0;u<t.length;u+=1){var f=t[u].dataCount,c=t[u].totalCount-f;n=Math.max(n,f),o=Math.max(o,c),a[u]=new Array(f);for(var g=0;g<a[u].length;g+=1)a[u][g]=255&r.getBuffer()[g+e];e+=f;var l=QRUtil.getErrorCorrectPolynomial(c),h=qrPolynomial(a[u],l.getLength()-1),v=h.mod(l);i[u]=new Array(l.getLength()-1);for(var g=0;g<i[u].length;g+=1){var s=g+v.getLength()-i[u].length;i[u][g]=s>=0?v.getAt(s):0}}for(var d=0,g=0;g<t.length;g+=1)d+=t[g].totalCount;for(var w=new Array(d),y=0,g=0;g<n;g+=1)for(var u=0;u<t.length;u+=1)g<a[u].length&&(w[y]=a[u][g],y+=1);for(var g=0;g<o;g+=1)for(var u=0;u<t.length;u+=1)g<i[u].length&&(w[y]=i[u][g],y+=1);return w},p=function(r,t,o){for(var a=QRRSBlock.getRSBlocks(r,t),i=qrBitBuffer(),u=0;u<o.length;u+=1){var f=o[u];i.put(f.getMode(),4),i.put(f.getLength(),QRUtil.getLengthInBits(f.getMode(),r)),f.write(i)}for(var c=0,u=0;u<a.length;u+=1)c+=a[u].dataCount;if(i.getLengthInBits()>8*c)throw new Error("code length overflow. ("+i.getLengthInBits()+">"+8*c+")");for(i.getLengthInBits()+4<=8*c&&i.put(0,4);i.getLengthInBits()%8!=0;)i.putBit(!1);for(;;){if(i.getLengthInBits()>=8*c)break;if(i.put(e,8),i.getLengthInBits()>=8*c)break;i.put(n,8)}return B(i,a)};return g.addData=function(r){var t=qr8BitByte(r);c.push(t),f=null},g.isDark=function(r,t){if(r<0||u<=r||t<0||u<=t)throw new Error(r+","+t);return i[r][t]},g.getModuleCount=function(){return u},g.make=function(){l(!1,v())},g.createTableTag=function(r,t){r=r||2,t="undefined"==typeof t?4*r:t;var e="";e+='<table style="',e+=" border-width: 0px; border-style: none;",e+=" border-collapse: collapse;",e+=" padding: 0px; margin: "+t+"px;",e+='">',e+="<tbody>";for(var n=0;n<g.getModuleCount();n+=1){e+="<tr>";for(var o=0;o<g.getModuleCount();o+=1)e+='<td style="',e+=" border-width: 0px; border-style: none;",e+=" border-collapse: collapse;",e+=" padding: 0px; margin: 0px;",e+=" width: "+r+"px;",e+=" height: "+r+"px;",e+=" background-color: ",e+=g.isDark(n,o)?"#000000":"#ffffff",e+=";",e+='"/>';e+="</tr>"}return e+="</tbody>",e+="</table>"},g.createImgTag=function(r,t,e){r=r||2,t="undefined"==typeof t?4*r:t;var n=t,o=g.getModuleCount()*r+t;return createImgTag(e,e,function(t,e){if(n<=t&&t<o&&n<=e&&e<o){var a=Math.floor((t-n)/r),i=Math.floor((e-n)/r);return g.isDark(i,a)?0:1}return 1})},g};qrcode.stringToBytes=function(r){for(var t=new Array,e=0;e<r.length;e+=1){var n=r.charCodeAt(e);t.push(255&n)}return t},qrcode.createStringToBytes=function(r,t){var e=function(){for(var e=base64DecodeInputStream(r),n=function(){var r=e.read();if(r==-1)throw new Error;return r},o=0,a={};;){var i=e.read();if(i==-1)break;var u=n(),f=n(),c=n(),g=String.fromCharCode(i<<8|u),l=f<<8|c;a[g]=l,o+=1}if(o!=t)throw new Error(o+" != "+t);return a}(),n="?".charCodeAt(0);return function(r){for(var t=new Array,o=0;o<r.length;o+=1){var a=r.charCodeAt(o);if(a<128)t.push(a);else{var i=e[r.charAt(o)];"number"==typeof i?(255&i)==i?t.push(i):(t.push(i>>>8),t.push(255&i)):t.push(n)}}return t}};var QRMode={MODE_NUMBER:1,MODE_ALPHA_NUM:2,MODE_8BIT_BYTE:4,MODE_KANJI:8},QRErrorCorrectLevel={L:1,M:0,Q:3,H:2},QRMaskPattern={PATTERN000:0,PATTERN001:1,PATTERN010:2,PATTERN011:3,PATTERN100:4,PATTERN101:5,PATTERN110:6,PATTERN111:7},QRUtil=function(){var r=[[],[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]],t=1335,e=7973,n=21522,o={},a=function(r){for(var t=0;0!=r;)t+=1,r>>>=1;return t};return o.getBCHTypeInfo=function(r){for(var e=r<<10;a(e)-a(t)>=0;)e^=t<<a(e)-a(t);return(r<<10|e)^n},o.getBCHTypeNumber=function(r){for(var t=r<<12;a(t)-a(e)>=0;)t^=e<<a(t)-a(e);return r<<12|t},o.getPatternPosition=function(t){return r[t-1]},o.getMaskFunction=function(r){switch(r){case QRMaskPattern.PATTERN000:return function(r,t){return(r+t)%2==0};case QRMaskPattern.PATTERN001:return function(r,t){return r%2==0};case QRMaskPattern.PATTERN010:return function(r,t){return t%3==0};case QRMaskPattern.PATTERN011:return function(r,t){return(r+t)%3==0};case QRMaskPattern.PATTERN100:return function(r,t){return(Math.floor(r/2)+Math.floor(t/3))%2==0};case QRMaskPattern.PATTERN101:return function(r,t){return r*t%2+r*t%3==0};case QRMaskPattern.PATTERN110:return function(r,t){return(r*t%2+r*t%3)%2==0};case QRMaskPattern.PATTERN111:return function(r,t){return(r*t%3+(r+t)%2)%2==0};default:throw new Error("bad maskPattern:"+r)}},o.getErrorCorrectPolynomial=function(r){for(var t=qrPolynomial([1],0),e=0;e<r;e+=1)t=t.multiply(qrPolynomial([1,QRMath.gexp(e)],0));return t},o.getLengthInBits=function(r,t){if(1<=t&&t<10)switch(r){case QRMode.MODE_NUMBER:return 10;case QRMode.MODE_ALPHA_NUM:return 9;case QRMode.MODE_8BIT_BYTE:return 8;case QRMode.MODE_KANJI:return 8;default:throw new Error("mode:"+r)}else if(t<27)switch(r){case QRMode.MODE_NUMBER:return 12;case QRMode.MODE_ALPHA_NUM:return 11;case QRMode.MODE_8BIT_BYTE:return 16;case QRMode.MODE_KANJI:return 10;default:throw new Error("mode:"+r)}else{if(!(t<41))throw new Error("type:"+t);switch(r){case QRMode.MODE_NUMBER:return 14;case QRMode.MODE_ALPHA_NUM:return 13;case QRMode.MODE_8BIT_BYTE:return 16;case QRMode.MODE_KANJI:return 12;default:throw new Error("mode:"+r)}}},o.getLostPoint=function(r){for(var t=r.getModuleCount(),e=0,n=0;n<t;n+=1)for(var o=0;o<t;o+=1){for(var a=0,i=r.isDark(n,o),u=-1;u<=1;u+=1)if(!(n+u<0||t<=n+u))for(var f=-1;f<=1;f+=1)o+f<0||t<=o+f||0==u&&0==f||i==r.isDark(n+u,o+f)&&(a+=1);a>5&&(e+=3+a-5)}for(var n=0;n<t-1;n+=1)for(var o=0;o<t-1;o+=1){var c=0;r.isDark(n,o)&&(c+=1),r.isDark(n+1,o)&&(c+=1),r.isDark(n,o+1)&&(c+=1),r.isDark(n+1,o+1)&&(c+=1),0!=c&&4!=c||(e+=3)}for(var n=0;n<t;n+=1)for(var o=0;o<t-6;o+=1)r.isDark(n,o)&&!r.isDark(n,o+1)&&r.isDark(n,o+2)&&r.isDark(n,o+3)&&r.isDark(n,o+4)&&!r.isDark(n,o+5)&&r.isDark(n,o+6)&&(e+=40);for(var o=0;o<t;o+=1)for(var n=0;n<t-6;n+=1)r.isDark(n,o)&&!r.isDark(n+1,o)&&r.isDark(n+2,o)&&r.isDark(n+3,o)&&r.isDark(n+4,o)&&!r.isDark(n+5,o)&&r.isDark(n+6,o)&&(e+=40);for(var g=0,o=0;o<t;o+=1)for(var n=0;n<t;n+=1)r.isDark(n,o)&&(g+=1);var l=Math.abs(100*g/t/t-50)/5;return e+=10*l},o}(),QRMath=function(){for(var r=new Array(256),t=new Array(256),e=0;e<8;e+=1)r[e]=1<<e;for(var e=8;e<256;e+=1)r[e]=r[e-4]^r[e-5]^r[e-6]^r[e-8];for(var e=0;e<255;e+=1)t[r[e]]=e;var n={};return n.glog=function(r){if(r<1)throw new Error("glog("+r+")");return t[r]},n.gexp=function(t){for(;t<0;)t+=255;for(;t>=256;)t-=255;return r[t]},n}(),QRRSBlock=function(){var r=[[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]],t=function(r,t){var e={};return e.totalCount=r,e.dataCount=t,e},e={},n=function(t,e){switch(e){case QRErrorCorrectLevel.L:return r[4*(t-1)+0];case QRErrorCorrectLevel.M:return r[4*(t-1)+1];case QRErrorCorrectLevel.Q:return r[4*(t-1)+2];case QRErrorCorrectLevel.H:return r[4*(t-1)+3];default:return}};return e.getRSBlocks=function(r,e){var o=n(r,e);if("undefined"==typeof o)throw new Error("bad rs block [url=home.php?mod=space&uid=5302]@[/url] typeNumber:"+r+"/errorCorrectLevel:"+e);for(var a=o.length/3,i=new Array,u=0;u<a;u+=1)for(var f=o[3*u+0],c=o[3*u+1],g=o[3*u+2],l=0;l<f;l+=1)i.push(t(c,g));return i},e}(),qrBitBuffer=function(){var r=new Array,t=0,e={};return e.getBuffer=function(){return r},e.getAt=function(t){var e=Math.floor(t/8);return 1==(r[e]>>>7-t%8&1)},e.put=function(r,t){for(var n=0;n<t;n+=1)e.putBit(1==(r>>>t-n-1&1))},e.getLengthInBits=function(){return t},e.putBit=function(e){var n=Math.floor(t/8);r.length<=n&&r.push(0),e&&(r[n]|=128>>>t%8),t+=1},e},qr8BitByte=function(r){for(var t=QRMode.MODE_8BIT_BYTE,e=r,n=[],o={},a=0,i=e.length;a<i;a++){var u=[],f=e.charCodeAt(a);f>65536?(u[0]=240|(1835008&f)>>>18,u[1]=128|(258048&f)>>>12,u[2]=128|(4032&f)>>>6,u[3]=128|63&f):f>2048?(u[0]=224|(61440&f)>>>12,u[1]=128|(4032&f)>>>6,u[2]=128|63&f):f>128?(u[0]=192|(1984&f)>>>6,u[1]=128|63&f):u[0]=f,n.push(u)}n=Array.prototype.concat.apply([],n),n.length!=e.length&&(n.unshift(191),n.unshift(187),n.unshift(239));var c=n;return o.getMode=function(){return t},o.getLength=function(r){return c.length},o.write=function(r){for(var t=0;t<c.length;t+=1)r.put(c[t],8)},o},byteArrayOutputStream=function(){var r=new Array,t={};return t.writeByte=function(t){r.push(255&t)},t.writeShort=function(r){t.writeByte(r),t.writeByte(r>>>8)},t.writeBytes=function(r,e,n){e=e||0,n=n||r.length;for(var o=0;o<n;o+=1)t.writeByte(r[o+e])},t.writeString=function(r){for(var e=0;e<r.length;e+=1)t.writeByte(r.charCodeAt(e))},t.toByteArray=function(){return r},t.toString=function(){var t="";t+="[";for(var e=0;e<r.length;e+=1)e>0&&(t+=","),t+=r[e];return t+="]"},t},base64EncodeOutputStream=function(){var r=0,t=0,e=0,n="",o={},a=function(r){n+=String.fromCharCode(i(63&r))},i=function(r){if(r<0);else{if(r<26)return 65+r;if(r<52)return 97+(r-26);if(r<62)return 48+(r-52);if(62==r)return 43;if(63==r)return 47}throw new Error("n:"+r)};return o.writeByte=function(n){for(r=r<<8|255&n,t+=8,e+=1;t>=6;)a(r>>>t-6),t-=6},o.flush=function(){if(t>0&&(a(r<<6-t),r=0,t=0),e%3!=0)for(var o=3-e%3,i=0;i<o;i+=1)n+="="},o.toString=function(){return n},o},base64DecodeInputStream=function(r){var t=r,e=0,n=0,o=0,a={};a.read=function(){for(;o<8;){if(e>=t.length){if(0==o)return-1;throw new Error("unexpected end of file./"+o)}var r=t.charAt(e);if(e+=1,"="==r)return o=0,-1;r.match(/^\s$/)||(n=n<<6|i(r.charCodeAt(0)),o+=6)}var a=n>>>o-8&255;return o-=8,a};var i=function(r){if(65<=r&&r<=90)return r-65;if(97<=r&&r<=122)return r-97+26;if(48<=r&&r<=57)return r-48+52;if(43==r)return 62;if(47==r)return 63;throw new Error("c:"+r)};return a},gifImage=function(r,t){var e=r,n=t,o=new Array(r*t),a={};a.setPixel=function(r,t,n){o[t*e+r]=n},a.write=function(r){r.writeString("GIF87a"),r.writeShort(e),r.writeShort(n),r.writeByte(128),r.writeByte(0),r.writeByte(0),r.writeByte(0),r.writeByte(0),r.writeByte(0),r.writeByte(255),r.writeByte(255),r.writeByte(255),r.writeString(","),r.writeShort(0),r.writeShort(0),r.writeShort(e),r.writeShort(n),r.writeByte(0);var t=2,o=u(t);r.writeByte(t);for(var a=0;o.length-a>255;)r.writeByte(255),r.writeBytes(o,a,255),a+=255;r.writeByte(o.length-a),r.writeBytes(o,a,o.length-a),r.writeByte(0),r.writeString(";")};var i=function(r){var t=r,e=0,n=0,o={};return o.write=function(r,o){if(r>>>o!=0)throw new Error("length over");for(;e+o>=8;)t.writeByte(255&(r<<e|n)),o-=8-e,r>>>=8-e,n=0,e=0;n|=r<<e,e+=o},o.flush=function(){e>0&&t.writeByte(n)},o},u=function(r){for(var t=1<<r,e=(1<<r)+1,n=r+1,a=f(),u=0;u<t;u+=1)a.add(String.fromCharCode(u));a.add(String.fromCharCode(t)),a.add(String.fromCharCode(e));var c=byteArrayOutputStream(),g=i(c);g.write(t,n);var l=0,h=String.fromCharCode(o[l]);for(l+=1;l<o.length;){var v=String.fromCharCode(o[l]);l+=1,a.contains(h+v)?h+=v:(g.write(a.indexOf(h),n),a.size()<4095&&(a.size()==1<<n&&(n+=1),a.add(h+v)),h=v)}return g.write(a.indexOf(h),n),g.write(e,n),g.flush(),c.toByteArray()},f=function(){var r={},t=0,e={};return e.add=function(n){if(e.contains(n))throw new Error("dup key:"+n);r[n]=t,t+=1},e.size=function(){return t},e.indexOf=function(t){return r[t]},e.contains=function(t){return"undefined"!=typeof r[t]},e};return a},createImgTag=function(r,t,e,n){for(var o=gifImage(r,t),a=0;a<t;a+=1)for(var i=0;i<r;i+=1)o.setPixel(i,a,e(i,a));var u=byteArrayOutputStream();o.write(u);for(var f=base64EncodeOutputStream(),c=u.toByteArray(),g=0;g<c.length;g+=1)f.writeByte(c[g]);f.flush();var l="";return l+="data:image/gif;base64,",l+=f},createQrCodeImg=function(r,t){t=t||{};var e,n=t.typeNumber||4,o=t.errorCorrectLevel||"M",a=t.size||500;try{e=qrcode(n,o||"M"),e.addData(r),e.make()}catch(t){if(n>=40)throw new Error("Text too long to encode");return gen(r,{size:a,errorCorrectLevel:o,typeNumber:n+1})}var i=parseInt(a/e.getModuleCount()),u=parseInt((a-e.getModuleCount()*i)/2);return e.createImgTag(i,u,a)};module.exports={createQrCodeImg:createQrCodeImg};
\ No newline at end of file

examples/hello-uniapp/components/qrcode/qrcode.vue

+<template>
+	<view class="qrcode">
+		<image class="image" v-if="img != ''" :src="img" :style="{ width: size+'px', height: size + 'px' }"/>
+	</view>
+</template>
+<script>
+	import QR from "./qrcode.js";
+	export default {
+		name: 'number-box',
+		props: {
+			val: {
+				type: String,
+				default: ''
+			},
+			size:{
+				type:Number,
+				default:100
+			}
+		},
+		data(){
+			return{
+				img:''
+			}
+		},
+		onUnload(){
+		},
+		methods: {
+			creatQrcode(){
+				let val = String(this.val)
+				if(val == ''){
+					return false
+				}
+				let img = QR.createQrCodeImg(val, {
+					size: parseInt(this.size)
+				})
+				this.img = img;
+			},
+			clearQrcode(){
+				this.img = '';
+			}
+		},
+		watch:{
+			size(newVal, oldVal){
+				if(newVal != oldVal){
+					this.size = newVal;
+					this.creatQrcode()
+				}
+			}
+		}
+	}
+</script>
+<style>
+	.qrcode{
+		display: flex;
+		justify-content: center;
+	}
+</style>

examples/hello-uniapp/pages.json

@@ -477,6 +477,11 @@
 			"style": {
 				"navigationBarTitleText": "markdown富文本渲染"
 			}
+		}, {
+			"path": "pages/template/qrcode/qrcode",
+			"style": {
+				"navigationBarTitleText": "二维码生成"
+			}
 		}, {
 			"path": "platforms/app-plus/about/about",
 			"style": {

examples/hello-uniapp/pages/template/qrcode/qrcode.vue

+<template>
+	<view>
+		<page-head :title="title"></page-head>
+		<view class="page-body">
+			<view class="page-section">
+				<qrcode :val="qrval" :size="qrsize" ref="qrcode"></qrcode>
+			</view>
+			<view class="page-section">
+				<view class="page-section-title">请输入要生成的二维码内容</view>
+				<view class="uni-list">
+					<view class="uni-list-cell">
+						<input class="uni-input" placeholder="请输入要生成的二维码内容" :value="qrval" @input="bindClearInput" />
+						<view class="uni-icon uni-icon-clear" v-if="showClearIcon" @click="clearIcon"></view>
+					</view>
+				</view>
+				<view class="page-section-title">设置二维码大小</view>
+				<view class="body-view">
+					<slider :value="qrsize" @change="sliderchange" min="50" max="500" show-value/>
+				</view>
+			</view>
+			<view class="page-section">
+				<button type="primary" @tap="creatQrcode">生成二维码</button>
+				<button type="warn" @tap="clearQrcode">清除二维码</button>
+			</view>
+		</view>
+	</view>
+</template>
+<script>
+	import pageHead from '../../../components/page-head.vue'
+	import qrcode from '../../../components/qrcode/qrcode.vue'
+
+	export default {
+		data() {
+			return {
+				title: '二维码生成',
+				showClearIcon: false,
+				qrval:'',
+				qrsize:100,
+			}
+		},
+		methods: {
+			bindClearInput: function (e) {
+				this.qrval = e.target.value;
+				if (e.target.value.length > 0) {
+					this.showClearIcon = true;
+				} else {
+					this.showClearIcon = false;
+				}
+			},
+			clearIcon: function () {
+				this.qrval = "";
+				this.showClearIcon = false;
+			},
+			sliderchange(e){
+				this.qrsize = e.detail.value
+			},
+			creatQrcode(){
+				this.$refs.qrcode.creatQrcode();
+			},
+			clearQrcode(){
+				this.$refs.qrcode.clearQrcode();
+				this.clearIcon();
+			}
+		},
+		components: {
+			pageHead,
+			qrcode
+		}
+	}
+</script>
+
+<style>
+	@import "../../../common/uni.css";
+	@import "../../../common/icon.css";
+	.page-section {
+		margin-bottom: 20px;
+	}
+
+	.page-body {
+		padding-bottom: 40px;
+	}
+
+	.uni-list-cell {
+		padding: 0 30px;
+	}
+
+	.uni-input {
+		flex: 1;
+	}
+
+	.uni-icon {
+		color: #999;
+	}
+</style>

examples/hello-uniapp/pages/template/template.vue

@@ -77,6 +77,9 @@
 					}, {
 						name: 'markdown富文本渲染',
 						url: 'mdparse'
+					}, {
+						name: '二维码生成',
+						url: 'qrcode'
 					}, {
 						name: '列表到详情示例',
 						url: 'list2detail-list'