commit 91ba9bdb2369a2fb128c2e8e69afec73abc42ba3 Author: Christian Lawson-Perfect Date: Sun Feb 9 19:56:41 2025 +0000 first commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..8bc0f76 --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +.make.* \ No newline at end of file diff --git a/index.html b/index.html new file mode 100644 index 0000000..bdd24db --- /dev/null +++ b/index.html @@ -0,0 +1,40 @@ + + + + + + + Make a QR code + + + + + + + +

Make a QR code

+ Text or URL: + +

SVG

PNG

Download PNG. +

+ + \ No newline at end of file diff --git a/qrcode.js b/qrcode.js new file mode 100644 index 0000000..e6ad25e --- /dev/null +++ b/qrcode.js @@ -0,0 +1,390 @@ +/** + * @fileoverview + * - Using the 'QRCode for Javascript library' + * - Fixed dataset of 'QRCode for Javascript library' for support full-spec. + * - this library has no dependencies. + * + * @author davidshimjs + * @see http://www.d-project.com/ + * @see http://jeromeetienne.github.com/jquery-qrcode/ + */ +var QRCode; + +(function () { + //--------------------------------------------------------------------- + // QRCode for JavaScript + // + // Copyright (c) 2009 Kazuhiko Arase + // + // URL: http://www.d-project.com/ + // + // Licensed under the MIT license: + // http://www.opensource.org/licenses/mit-license.php + // + // The word "QR Code" is registered trademark of + // DENSO WAVE INCORPORATED + // http://www.denso-wave.com/qrcode/faqpatent-e.html + // + //--------------------------------------------------------------------- + function QR8bitByte(data) { + this.mode = QRMode.MODE_8BIT_BYTE; + this.data = data; + this.parsedData = []; + + // Added to support UTF-8 Characters + for (var i = 0, l = this.data.length; i < l; i++) { + var byteArray = []; + var code = this.data.charCodeAt(i); + + if (code > 0x10000) { + byteArray[0] = 0xF0 | ((code & 0x1C0000) >>> 18); + byteArray[1] = 0x80 | ((code & 0x3F000) >>> 12); + byteArray[2] = 0x80 | ((code & 0xFC0) >>> 6); + byteArray[3] = 0x80 | (code & 0x3F); + } else if (code > 0x800) { + byteArray[0] = 0xE0 | ((code & 0xF000) >>> 12); + byteArray[1] = 0x80 | ((code & 0xFC0) >>> 6); + byteArray[2] = 0x80 | (code & 0x3F); + } else if (code > 0x80) { + byteArray[0] = 0xC0 | ((code & 0x7C0) >>> 6); + byteArray[1] = 0x80 | (code & 0x3F); + } else { + byteArray[0] = code; + } + + this.parsedData.push(byteArray); + } + + this.parsedData = Array.prototype.concat.apply([], this.parsedData); + + if (this.parsedData.length != this.data.length) { + this.parsedData.unshift(191); + this.parsedData.unshift(187); + this.parsedData.unshift(239); + } + } + + QR8bitByte.prototype = { + getLength: function (buffer) { + return this.parsedData.length; + }, + write: function (buffer) { + for (var i = 0, l = this.parsedData.length; i < l; i++) { + buffer.put(this.parsedData[i], 8); + } + } + }; + + function QRCodeModel(typeNumber, errorCorrectLevel) { + this.typeNumber = typeNumber; + this.errorCorrectLevel = errorCorrectLevel; + this.modules = null; + this.moduleCount = 0; + this.dataCache = null; + this.dataList = []; + } + + QRCodeModel.prototype={addData:function(data){var newData=new QR8bitByte(data);this.dataList.push(newData);this.dataCache=null;},isDark:function(row,col){if(row<0||this.moduleCount<=row||col<0||this.moduleCount<=col){throw new Error(row+","+col);} + return this.modules[row][col];},getModuleCount:function(){return this.moduleCount;},make:function(){this.makeImpl(false,this.getBestMaskPattern());},makeImpl:function(test,maskPattern){this.moduleCount=this.typeNumber*4+17;this.modules=new Array(this.moduleCount);for(var row=0;row=7){this.setupTypeNumber(test);} + if(this.dataCache==null){this.dataCache=QRCodeModel.createData(this.typeNumber,this.errorCorrectLevel,this.dataList);} + this.mapData(this.dataCache,maskPattern);},setupPositionProbePattern:function(row,col){for(var r=-1;r<=7;r++){if(row+r<=-1||this.moduleCount<=row+r)continue;for(var c=-1;c<=7;c++){if(col+c<=-1||this.moduleCount<=col+c)continue;if((0<=r&&r<=6&&(c==0||c==6))||(0<=c&&c<=6&&(r==0||r==6))||(2<=r&&r<=4&&2<=c&&c<=4)){this.modules[row+r][col+c]=true;}else{this.modules[row+r][col+c]=false;}}}},getBestMaskPattern:function(){var minLostPoint=0;var pattern=0;for(var i=0;i<8;i++){this.makeImpl(true,i);var lostPoint=QRUtil.getLostPoint(this);if(i==0||minLostPoint>lostPoint){minLostPoint=lostPoint;pattern=i;}} + return pattern;},createMovieClip:function(target_mc,instance_name,depth){var qr_mc=target_mc.createEmptyMovieClip(instance_name,depth);var cs=1;this.make();for(var row=0;row>i)&1)==1);this.modules[Math.floor(i/3)][i%3+this.moduleCount-8-3]=mod;} + for(var i=0;i<18;i++){var mod=(!test&&((bits>>i)&1)==1);this.modules[i%3+this.moduleCount-8-3][Math.floor(i/3)]=mod;}},setupTypeInfo:function(test,maskPattern){var data=(this.errorCorrectLevel<<3)|maskPattern;var bits=QRUtil.getBCHTypeInfo(data);for(var i=0;i<15;i++){var mod=(!test&&((bits>>i)&1)==1);if(i<6){this.modules[i][8]=mod;}else if(i<8){this.modules[i+1][8]=mod;}else{this.modules[this.moduleCount-15+i][8]=mod;}} + for(var i=0;i<15;i++){var mod=(!test&&((bits>>i)&1)==1);if(i<8){this.modules[8][this.moduleCount-i-1]=mod;}else if(i<9){this.modules[8][15-i-1+1]=mod;}else{this.modules[8][15-i-1]=mod;}} + this.modules[this.moduleCount-8][8]=(!test);},mapData:function(data,maskPattern){var inc=-1;var row=this.moduleCount-1;var bitIndex=7;var byteIndex=0;for(var col=this.moduleCount-1;col>0;col-=2){if(col==6)col--;while(true){for(var c=0;c<2;c++){if(this.modules[row][col-c]==null){var dark=false;if(byteIndex>>bitIndex)&1)==1);} + var mask=QRUtil.getMask(maskPattern,row,col-c);if(mask){dark=!dark;} + this.modules[row][col-c]=dark;bitIndex--;if(bitIndex==-1){byteIndex++;bitIndex=7;}}} + row+=inc;if(row<0||this.moduleCount<=row){row-=inc;inc=-inc;break;}}}}};QRCodeModel.PAD0=0xEC;QRCodeModel.PAD1=0x11;QRCodeModel.createData=function(typeNumber,errorCorrectLevel,dataList){var rsBlocks=QRRSBlock.getRSBlocks(typeNumber,errorCorrectLevel);var buffer=new QRBitBuffer();for(var i=0;itotalDataCount*8){throw new Error("code length overflow. (" + +buffer.getLengthInBits() + +">" + +totalDataCount*8 + +")");} + if(buffer.getLengthInBits()+4<=totalDataCount*8){buffer.put(0,4);} + while(buffer.getLengthInBits()%8!=0){buffer.putBit(false);} + while(true){if(buffer.getLengthInBits()>=totalDataCount*8){break;} + buffer.put(QRCodeModel.PAD0,8);if(buffer.getLengthInBits()>=totalDataCount*8){break;} + buffer.put(QRCodeModel.PAD1,8);} + return QRCodeModel.createBytes(buffer,rsBlocks);};QRCodeModel.createBytes=function(buffer,rsBlocks){var offset=0;var maxDcCount=0;var maxEcCount=0;var dcdata=new Array(rsBlocks.length);var ecdata=new Array(rsBlocks.length);for(var r=0;r=0)?modPoly.get(modIndex):0;}} + var totalCodeCount=0;for(var i=0;i=0){d^=(QRUtil.G15<<(QRUtil.getBCHDigit(d)-QRUtil.getBCHDigit(QRUtil.G15)));} + return((data<<10)|d)^QRUtil.G15_MASK;},getBCHTypeNumber:function(data){var d=data<<12;while(QRUtil.getBCHDigit(d)-QRUtil.getBCHDigit(QRUtil.G18)>=0){d^=(QRUtil.G18<<(QRUtil.getBCHDigit(d)-QRUtil.getBCHDigit(QRUtil.G18)));} + return(data<<12)|d;},getBCHDigit:function(data){var digit=0;while(data!=0){digit++;data>>>=1;} + return digit;},getPatternPosition:function(typeNumber){return QRUtil.PATTERN_POSITION_TABLE[typeNumber-1];},getMask:function(maskPattern,i,j){switch(maskPattern){case QRMaskPattern.PATTERN000:return(i+j)%2==0;case QRMaskPattern.PATTERN001:return i%2==0;case QRMaskPattern.PATTERN010:return j%3==0;case QRMaskPattern.PATTERN011:return(i+j)%3==0;case QRMaskPattern.PATTERN100:return(Math.floor(i/2)+Math.floor(j/3))%2==0;case QRMaskPattern.PATTERN101:return(i*j)%2+(i*j)%3==0;case QRMaskPattern.PATTERN110:return((i*j)%2+(i*j)%3)%2==0;case QRMaskPattern.PATTERN111:return((i*j)%3+(i+j)%2)%2==0;default:throw new Error("bad maskPattern:"+maskPattern);}},getErrorCorrectPolynomial:function(errorCorrectLength){var a=new QRPolynomial([1],0);for(var i=0;i5){lostPoint+=(3+sameCount-5);}}} + for(var row=0;row=256){n-=255;} + return QRMath.EXP_TABLE[n];},EXP_TABLE:new Array(256),LOG_TABLE:new Array(256)};for(var i=0;i<8;i++){QRMath.EXP_TABLE[i]=1<>>(7-index%8))&1)==1;},put:function(num,length){for(var i=0;i>>(length-i-1))&1)==1);}},getLengthInBits:function(){return this.length;},putBit:function(bit){var bufIndex=Math.floor(this.length/8);if(this.buffer.length<=bufIndex){this.buffer.push(0);} + if(bit){this.buffer[bufIndex]|=(0x80>>>(this.length%8));} + this.length++;}};var QRCodeLimitLength=[[17,14,11,7],[32,26,20,14],[53,42,32,24],[78,62,46,34],[106,84,60,44],[134,106,74,58],[154,122,86,64],[192,152,108,84],[230,180,130,98],[271,213,151,119],[321,251,177,137],[367,287,203,155],[425,331,241,177],[458,362,258,194],[520,412,292,220],[586,450,322,250],[644,504,364,280],[718,560,394,310],[792,624,442,338],[858,666,482,382],[929,711,509,403],[1003,779,565,439],[1091,857,611,461],[1171,911,661,511],[1273,997,715,535],[1367,1059,751,593],[1465,1125,805,625],[1528,1190,868,658],[1628,1264,908,698],[1732,1370,982,742],[1840,1452,1030,790],[1952,1538,1112,842],[2068,1628,1168,898],[2188,1722,1228,958],[2303,1809,1283,983],[2431,1911,1351,1051],[2563,1989,1423,1093],[2699,2099,1499,1139],[2809,2213,1579,1219],[2953,2331,1663,1273]]; + + function _isSupportCanvas() { + return typeof CanvasRenderingContext2D != "undefined"; + } + + // android 2.x doesn't support Data-URI spec + function _getAndroid() { + var android = false; + var sAgent = navigator.userAgent; + + if (/android/i.test(sAgent)) { // android + android = true; + var aMat = sAgent.toString().match(/android ([0-9]\.[0-9])/i); + + if (aMat && aMat[1]) { + android = parseFloat(aMat[1]); + } + } + + return android; + } + + var svgDrawer = (function() { + + var Drawing = function (el, htOption) { + this._el = el; + this._htOption = htOption; + }; + + Drawing.prototype.draw = function (oQRCode) { + var _htOption = this._htOption; + var _el = this._el; + var nCount = oQRCode.getModuleCount(); + var nWidth = Math.floor(_htOption.width / nCount); + var nHeight = Math.floor(_htOption.height / nCount); + + this.clear(); + + function makeSVG(tag, attrs) { + var el = document.createElementNS('http://www.w3.org/2000/svg', tag); + Object.entries(attrs).forEach(([k,v]) => { + el.setAttribute(k,v); + }) + return el; + } + + const margin = 2; + var svg = makeSVG("svg" , {'viewBox': `${-margin} ${-margin} ${nCount+2*margin} ${nCount+2*margin}`, 'width': '100%', 'height': '100%', 'fill': _htOption.colorLight}); + svg.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:xlink", "http://www.w3.org/1999/xlink"); + _el.appendChild(svg); + + svg.appendChild(makeSVG("rect", {class: 'bg', width: nCount + 2*margin, height: nCount + 2*margin, x: -margin, y: -margin, "fill": _htOption.colorLight,})); + + const data = oQRCode.dataList.map(d=>d.data).join(''); + let i = 0; + + for (var row = 0; row < nCount; row++) { + for (var col = 0; col < nCount; col++) { + const isDark = oQRCode.isDark(row, col); + if (isDark) { + var child = makeSVG("rect", {x: col, y: row, fill: _htOption.colorDark, width: 1, height: 1}); + svg.appendChild(child); + } + if(i < data.length && (row >= 7 && row < nCount-7 || col >= 7 && col < nCount-7 || row >= 7 && col >= 7)) { + var child = makeSVG("text",{"x": String(col+0.5), "y": String(row+0.5), "font-size": "1", stroke: "none", 'font-weight': 'light', 'font-family': 'monospace', 'fill': 'gray', 'dominant-baseline': 'middle', 'text-anchor': 'middle'}); + child.textContent = data[i]; + i += 1; + svg.appendChild(child); + } + } + } + }; + Drawing.prototype.clear = function () { + while (this._el.hasChildNodes()) + this._el.removeChild(this._el.lastChild); + }; + return Drawing; + })(); + + var useSVG = true; + + // Drawing in DOM by using Table tag + var Drawing = svgDrawer; + + /** + * Get the type by string length + * + * @private + * @param {String} sText + * @param {Number} nCorrectLevel + * @return {Number} type + */ + function _getTypeNumber(sText, nCorrectLevel) { + var nType = 1; + var length = _getUTF8Length(sText); + + for (var i = 0, len = QRCodeLimitLength.length; i <= len; i++) { + var nLimit = 0; + + switch (nCorrectLevel) { + case QRErrorCorrectLevel.L : + nLimit = QRCodeLimitLength[i][0]; + break; + case QRErrorCorrectLevel.M : + nLimit = QRCodeLimitLength[i][1]; + break; + case QRErrorCorrectLevel.Q : + nLimit = QRCodeLimitLength[i][2]; + break; + case QRErrorCorrectLevel.H : + nLimit = QRCodeLimitLength[i][3]; + break; + } + + if (length <= nLimit) { + break; + } else { + nType++; + } + } + + if (nType > QRCodeLimitLength.length) { + throw new Error("Too long data"); + } + + return nType; + } + + function _getUTF8Length(sText) { + var replacedText = encodeURI(sText).toString().replace(/\%[0-9a-fA-F]{2}/g, 'a'); + return replacedText.length + (replacedText.length != sText ? 3 : 0); + } + + /** + * @class QRCode + * @constructor + * @example + * new QRCode(document.getElementById("test"), "http://jindo.dev.naver.com/collie"); + * + * @example + * var oQRCode = new QRCode("test", { + * text : "http://naver.com", + * width : 128, + * height : 128 + * }); + * + * oQRCode.clear(); // Clear the QRCode. + * oQRCode.makeCode("http://map.naver.com"); // Re-create the QRCode. + * + * @param {HTMLElement|String} el target element or 'id' attribute of element. + * @param {Object|String} vOption + * @param {String} vOption.text QRCode link data + * @param {Number} [vOption.width=256] + * @param {Number} [vOption.height=256] + * @param {String} [vOption.colorDark="#000000"] + * @param {String} [vOption.colorLight="#ffffff"] + * @param {QRCode.CorrectLevel} [vOption.correctLevel=QRCode.CorrectLevel.H] [L|M|Q|H] + */ + QRCode = function (el, vOption) { + this._htOption = { + width : 256, + height : 256, + typeNumber : 4, + colorDark : "#000000", + colorLight : "#ffffff", + correctLevel : QRErrorCorrectLevel.H + }; + + if (typeof vOption === 'string') { + vOption = { + text : vOption + }; + } + + // Overwrites options + if (vOption) { + for (var i in vOption) { + this._htOption[i] = vOption[i]; + } + } + + if (typeof el == "string") { + el = document.getElementById(el); + } + + if (this._htOption.useSVG) { + Drawing = svgDrawer; + } + + this._android = _getAndroid(); + this._el = el; + this._oQRCode = null; + this._oDrawing = new Drawing(this._el, this._htOption); + + if (this._htOption.text) { + this.makeCode(this._htOption.text); + } + }; + + /** + * Make the QRCode + * + * @param {String} sText link data + */ + QRCode.prototype.makeCode = function (sText) { + this._oQRCode = new QRCodeModel(_getTypeNumber(sText, this._htOption.correctLevel), this._htOption.correctLevel); + this._oQRCode.addData(sText); + this._oQRCode.make(); + this._el.title = sText; + this._oDrawing.draw(this._oQRCode); + this.makeImage(); + }; + + /** + * Make the Image from Canvas element + * - It occurs automatically + * - Android below 3 doesn't support Data-URI spec. + * + * @private + */ + QRCode.prototype.makeImage = function () { + if (typeof this._oDrawing.makeImage == "function" && (!this._android || this._android >= 3)) { + this._oDrawing.makeImage(); + } + }; + + /** + * Clear the QRCode + */ + QRCode.prototype.clear = function () { + this._oDrawing.clear(); + }; + + /** + * @name QRCode.CorrectLevel + */ + QRCode.CorrectLevel = QRErrorCorrectLevel; +})(); \ No newline at end of file diff --git a/script.js b/script.js new file mode 100644 index 0000000..5fb3238 --- /dev/null +++ b/script.js @@ -0,0 +1,110 @@ +const qrcode = new QRCode("qrcode", { + width: 512, + height: 512 +}); +const input = document.getElementById('text'); + +function svg_content() { + const svg = document.querySelector('#qrcode svg'); + svg.setAttribute('width',512); + svg.setAttribute('height',512); + svg.setAttribute('xmlns','http://www.w3.org/2000/svg'); + const content = ``+svg.outerHTML; + return content; +} + +async function set_png_link() { + const blob = await png_blob(); +} + +let png_blob; +let svg_blob; + +async function go() { + qrcode.makeCode(input.value); + + + const basename = input.value.replace(/\W+/g,'-'); + function set_link(a, url, extension) { + a.setAttribute('href', url); + a.setAttribute('target','_blank'); + a.setAttribute('download', `${basename}.${extension}`); + } + + + const content = svg_content(); + svg_blob = new Blob([content],{type: 'image/svg+xml'}); + const a_svg = document.getElementById('download-svg'); + const svg_url = URL.createObjectURL(svg_blob); + + set_link(document.getElementById('download-svg'), svg_url, 'svg'); + + const px = Math.max(3000, 10 * qrcode._oQRCode.getModuleCount()); + const img = new Image(); + const canvas = new OffscreenCanvas(px, px); + canvas.width = canvas.height = px; + const ctx = canvas.getContext('2d'); + const promise = new Promise(async (resolve) => { + img.addEventListener('load', async () => { + canvas.getContext('2d').drawImage(img, 0, 0, px, px); + const blob = await canvas.convertToBlob(); + resolve(blob); + },{once:true}); + + }) + + img.src = svg_url; + + png_blob = await promise; + const png_url = URL.createObjectURL(png_blob); + set_link(document.getElementById('download-png'), png_url, 'png'); +} + +input.addEventListener('change', e => { + go(); +}) + +input.addEventListener('input', e => { + go(); +}) + +async function writeClipImg() { + try { + if (ClipboardItem.supports("image/svg+xml")) { + const imgURL = "/my-image.svg"; + const data = await fetch(imgURL); + const blob = await data.blob(); + await navigator.clipboard.write([ + new ClipboardItem({ + [blob.type]: blob, + }), + ]); + console.log("Fetched image copied."); + } else { + console.log("SVG images are not supported by the clipboard."); + } + } catch (err) { + console.error(err.name, err.message); + } +} + + + +document.getElementById('copy-to-clipboard-png').addEventListener('click',async () => { + await navigator.clipboard.write([ + new ClipboardItem({ + [png_blob.type]: png_blob, + }) + ]); +}) + +document.getElementById('copy-to-clipboard-svg').addEventListener('click',async () => { + const content = svg_content(); + try { + await navigator.clipboard.writeText(content); + } catch (error) { + console.error(error.message); + } +}) + +go(); \ No newline at end of file diff --git a/style.css b/style.css new file mode 100644 index 0000000..e54bfac --- /dev/null +++ b/style.css @@ -0,0 +1,43 @@ +:root { + --spacing: 1em; + + color-scheme: light dark; +} + +body { + font-family: sans-serif; +} + +#qrcode { + padding: 64px; + background: white; +} + +main { + display: grid; + grid-template: + "label input" + "qrcode qrcode" + "download download" + / + auto 1fr; + grid-gap: 1em; +} + +main > input { + width: 100%; + display: block; + grid-area: input; +} + +#qrcode { + grid-area: qrcode; +} + +#qrcode svg { + max-height: 50vh; +} + +#download { + grid-area: download; +} \ No newline at end of file