js生成带有logo的二维码并保存成图片下载

/*! jquery-qrcode v0.14.0 - https://larsjung.de/jquery-qrcode/ */
(function (vendor_qrcode) {
'use strict'; var jq = window.jQuery; // Check if canvas is available in the browser (as Modernizr does)
var hasCanvas = (function () {
var elem = document.createElement('canvas');
return !!(elem.getContext && elem.getContext('2d'));
}()); // Wrapper for the original QR code generator.
function createQRCode(text, level, version, quiet) {
var qr = {}; var vqr = vendor_qrcode(version, level);
vqr.addData(text);
vqr.make(); quiet = quiet || 0; var qrModuleCount = vqr.getModuleCount();
var quietModuleCount = vqr.getModuleCount() + 2 * quiet; function isDark(row, col) {
row -= quiet;
col -= quiet; if (row < 0 || row >= qrModuleCount || col < 0 || col >= qrModuleCount) {
return false;
}
return vqr.isDark(row, col);
} function addBlank(l, t, r, b) {
var prevIsDark = qr.isDark;
var moduleSize = 1 / quietModuleCount; qr.isDark = function (row, col) {
var ml = col * moduleSize;
var mt = row * moduleSize;
var mr = ml + moduleSize;
var mb = mt + moduleSize; return prevIsDark(row, col) && (l > mr || ml > r || t > mb || mt > b);
};
} qr.text = text;
qr.level = level;
qr.version = version;
qr.moduleCount = quietModuleCount;
qr.isDark = isDark;
qr.addBlank = addBlank; return qr;
} // Returns a minimal QR code for the given text starting with version `minVersion`.
// Returns `undefined` if `text` is too long to be encoded in `maxVersion`.
function createMinQRCode(text, level, minVersion, maxVersion, quiet) {
minVersion = Math.max(1, minVersion || 1);
maxVersion = Math.min(40, maxVersion || 40);
for (var version = minVersion; version <= maxVersion; version += 1) {
try {
return createQRCode(text, level, version, quiet);
} catch (err) {/* empty */}
}
return undefined;
} function drawBackgroundLabel(qr, context, settings) {
var size = settings.size;
var font = 'bold ' + settings.mSize * size + 'px ' + settings.fontname;
var ctx = jq('<canvas/>')[0].getContext('2d'); ctx.font = font; var w = ctx.measureText(settings.label).width;
var sh = settings.mSize;
var sw = w / size;
var sl = (1 - sw) * settings.mPosX;
var st = (1 - sh) * settings.mPosY;
var sr = sl + sw;
var sb = st + sh;
var pad = 0.01; if (settings.mode === 1) {
// Strip
qr.addBlank(0, st - pad, size, sb + pad);
} else {
// Box
qr.addBlank(sl - pad, st - pad, sr + pad, sb + pad);
} context.fillStyle = settings.fontcolor;
context.font = font;
context.fillText(settings.label, sl * size, st * size + 0.75 * settings.mSize * size);
} function drawBackgroundImage(qr, context, settings) {
var size = settings.size;
var w = settings.image.naturalWidth || 1;
var h = settings.image.naturalHeight || 1;
var sh = settings.mSize;
var sw = sh * w / h;
var sl = (1 - sw) * settings.mPosX;
var st = (1 - sh) * settings.mPosY;
var sr = sl + sw;
var sb = st + sh;
var pad = 0.01; if (settings.mode === 3) {
// Strip
qr.addBlank(0, st - pad, size, sb + pad);
} else {
// Box
qr.addBlank(sl - pad, st - pad, sr + pad, sb + pad);
} context.drawImage(settings.image, sl * size, st * size, sw * size, sh * size);
} function drawBackground(qr, context, settings) {
if (jq(settings.background).is('img')) {
context.drawImage(settings.background, 0, 0, settings.size, settings.size);
} else if (settings.background) {
context.fillStyle = settings.background;
context.fillRect(settings.left, settings.top, settings.size, settings.size);
} var mode = settings.mode;
if (mode === 1 || mode === 2) {
drawBackgroundLabel(qr, context, settings);
} else if (mode === 3 || mode === 4) {
drawBackgroundImage(qr, context, settings);
}
} function drawModuleDefault(qr, context, settings, left, top, width, row, col) {
if (qr.isDark(row, col)) {
context.rect(left, top, width, width);
}
} function drawModuleRoundedDark(ctx, l, t, r, b, rad, nw, ne, se, sw) {
if (nw) {
ctx.moveTo(l + rad, t);
} else {
ctx.moveTo(l, t);
} if (ne) {
ctx.lineTo(r - rad, t);
ctx.arcTo(r, t, r, b, rad);
} else {
ctx.lineTo(r, t);
} if (se) {
ctx.lineTo(r, b - rad);
ctx.arcTo(r, b, l, b, rad);
} else {
ctx.lineTo(r, b);
} if (sw) {
ctx.lineTo(l + rad, b);
ctx.arcTo(l, b, l, t, rad);
} else {
ctx.lineTo(l, b);
} if (nw) {
ctx.lineTo(l, t + rad);
ctx.arcTo(l, t, r, t, rad);
} else {
ctx.lineTo(l, t);
}
} function drawModuleRoundendLight(ctx, l, t, r, b, rad, nw, ne, se, sw) {
if (nw) {
ctx.moveTo(l + rad, t);
ctx.lineTo(l, t);
ctx.lineTo(l, t + rad);
ctx.arcTo(l, t, l + rad, t, rad);
} if (ne) {
ctx.moveTo(r - rad, t);
ctx.lineTo(r, t);
ctx.lineTo(r, t + rad);
ctx.arcTo(r, t, r - rad, t, rad);
} if (se) {
ctx.moveTo(r - rad, b);
ctx.lineTo(r, b);
ctx.lineTo(r, b - rad);
ctx.arcTo(r, b, r - rad, b, rad);
} if (sw) {
ctx.moveTo(l + rad, b);
ctx.lineTo(l, b);
ctx.lineTo(l, b - rad);
ctx.arcTo(l, b, l + rad, b, rad);
}
} function drawModuleRounded(qr, context, settings, left, top, width, row, col) {
var isDark = qr.isDark;
var right = left + width;
var bottom = top + width;
var radius = settings.radius * width;
var rowT = row - 1;
var rowB = row + 1;
var colL = col - 1;
var colR = col + 1;
var center = isDark(row, col);
var northwest = isDark(rowT, colL);
var north = isDark(rowT, col);
var northeast = isDark(rowT, colR);
var east = isDark(row, colR);
var southeast = isDark(rowB, colR);
var south = isDark(rowB, col);
var southwest = isDark(rowB, colL);
var west = isDark(row, colL); if (center) {
drawModuleRoundedDark(context, left, top, right, bottom, radius, !north && !west, !north && !east, !south && !east, !south && !west);
} else {
drawModuleRoundendLight(context, left, top, right, bottom, radius, north && west && northwest, north && east && northeast, south && east && southeast, south && west && southwest);
}
} function drawModules(qr, context, settings) {
var moduleCount = qr.moduleCount;
var moduleSize = settings.size / moduleCount;
var fn = drawModuleDefault;
var row;
var col; if (settings.radius > 0 && settings.radius <= 0.5) {
fn = drawModuleRounded;
} context.beginPath();
for (row = 0; row < moduleCount; row += 1) {
for (col = 0; col < moduleCount; col += 1) {
var l = settings.left + col * moduleSize;
var t = settings.top + row * moduleSize;
var w = moduleSize; fn(qr, context, settings, l, t, w, row, col);
}
}
if (jq(settings.fill).is('img')) {
context.strokeStyle = 'rgba(0,0,0,0.5)';
context.lineWidth = 2;
context.stroke();
var prev = context.globalCompositeOperation;
context.globalCompositeOperation = 'destination-out';
context.fill();
context.globalCompositeOperation = prev; context.clip();
context.drawImage(settings.fill, 0, 0, settings.size, settings.size);
context.restore();
} else {
context.fillStyle = settings.fill;
context.fill();
}
} // Draws QR code to the given `canvas` and returns it.
function drawOnCanvas(canvas, settings) {
var qr = createMinQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
if (!qr) {
return null;
} var $canvas = jq(canvas).data('qrcode', qr);
var context = $canvas[0].getContext('2d'); drawBackground(qr, context, settings);
drawModules(qr, context, settings); return $canvas;
} // Returns a `canvas` element representing the QR code for the given settings.
function createCanvas(settings) {
var $canvas = jq('<canvas/>').attr('width', settings.size).attr('height', settings.size);
return drawOnCanvas($canvas, settings);
} // Returns an `image` element representing the QR code for the given settings.
function createImage(settings) {
return jq('<img/>').attr('src', createCanvas(settings)[0].toDataURL('image/png'));
} // Returns a `div` element representing the QR code for the given settings.
function createDiv(settings) {
var qr = createMinQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
if (!qr) {
return null;
} // some shortcuts to improve compression
var settings_size = settings.size;
var settings_bgColor = settings.background;
var math_floor = Math.floor; var moduleCount = qr.moduleCount;
var moduleSize = math_floor(settings_size / moduleCount);
var offset = math_floor(0.5 * (settings_size - moduleSize * moduleCount)); var row;
var col; var containerCSS = {
position: 'relative',
left: 0,
top: 0,
padding: 0,
margin: 0,
width: settings_size,
height: settings_size
};
var darkCSS = {
position: 'absolute',
padding: 0,
margin: 0,
width: moduleSize,
height: moduleSize,
'background-color': settings.fill
}; var $div = jq('<div/>').data('qrcode', qr).css(containerCSS); if (settings_bgColor) {
$div.css('background-color', settings_bgColor);
} for (row = 0; row < moduleCount; row += 1) {
for (col = 0; col < moduleCount; col += 1) {
if (qr.isDark(row, col)) {
jq('<div/>')
.css(darkCSS)
.css({
left: offset + col * moduleSize,
top: offset + row * moduleSize
})
.appendTo($div);
}
}
} return $div;
} function createHTML(settings) {
if (hasCanvas && settings.render === 'canvas') {
return createCanvas(settings);
} else if (hasCanvas && settings.render === 'image') {
return createImage(settings);
} return createDiv(settings);
} // Plugin
// ====== // Default settings
// ----------------
var defaults = {
// render method: `'canvas'`, `'image'` or `'div'`
render: 'canvas', // version range somewhere in 1 .. 40
minVersion: 1,
maxVersion: 40, // error correction level: `'L'`, `'M'`, `'Q'` or `'H'`
ecLevel: 'L', // offset in pixel if drawn onto existing canvas
left: 0,
top: 0, // size in pixel
size: 200, // code color or image element
fill: '#000', // background color or image element, `null` for transparent background
background: null, // content
text: 'no text', // corner radius relative to module width: 0.0 .. 0.5
radius: 0, // quiet zone in modules
quiet: 0, // modes
// 0: normal
// 1: label strip
// 2: label box
// 3: image strip
// 4: image box
mode: 0, mSize: 0.1,
mPosX: 0.5,
mPosY: 0.5, label: 'no label',
fontname: 'sans',
fontcolor: '#000', image: null
}; // Register the plugin
// -------------------
jq.fn.qrcode = function (options) {
var settings = jq.extend({}, defaults, options); return this.each(function (idx, el) {
if (el.nodeName.toLowerCase() === 'canvas') {
drawOnCanvas(el, settings);
} else {
jq(el).append(createHTML(settings));
}
});
};
}(function () {
// `qrcode` is the single public function defined by the `QR Code Generator`
//---------------------------------------------------------------------
//
// QR Code Generator 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
//
//--------------------------------------------------------------------- var qrcode = function() { //---------------------------------------------------------------------
// qrcode
//--------------------------------------------------------------------- /**
* qrcode
* @param typeNumber 1 to 40
* @param errorCorrectLevel 'L','M','Q','H'
*/
var qrcode = function(typeNumber, errorCorrectLevel) { var PAD0 = 0xEC;
var PAD1 = 0x11; var _typeNumber = typeNumber;
var _errorCorrectLevel = QRErrorCorrectLevel[errorCorrectLevel];
var _modules = null;
var _moduleCount = 0;
var _dataCache = null;
var _dataList = new Array(); var _this = {}; var makeImpl = function(test, maskPattern) { _moduleCount = _typeNumber * 4 + 17;
_modules = function(moduleCount) {
var modules = new Array(moduleCount);
for (var row = 0; row < moduleCount; row += 1) {
modules[row] = new Array(moduleCount);
for (var col = 0; col < moduleCount; col += 1) {
modules[row][col] = null;
}
}
return modules;
}(_moduleCount); setupPositionProbePattern(0, 0);
setupPositionProbePattern(_moduleCount - 7, 0);
setupPositionProbePattern(0, _moduleCount - 7);
setupPositionAdjustPattern();
setupTimingPattern();
setupTypeInfo(test, maskPattern); if (_typeNumber >= 7) {
setupTypeNumber(test);
} if (_dataCache == null) {
_dataCache = createData(_typeNumber, _errorCorrectLevel, _dataList);
} mapData(_dataCache, maskPattern);
}; var setupPositionProbePattern = function(row, col) { for (var r = -1; r <= 7; r += 1) { if (row + r <= -1 || _moduleCount <= row + r) continue; for (var c = -1; c <= 7; c += 1) { if (col + c <= -1 || _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) ) {
_modules[row + r][col + c] = true;
} else {
_modules[row + r][col + c] = false;
}
}
}
}; var getBestMaskPattern = function() { var minLostPoint = 0;
var pattern = 0; for (var i = 0; i < 8; i += 1) { makeImpl(true, i); var lostPoint = QRUtil.getLostPoint(_this); if (i == 0 || minLostPoint > lostPoint) {
minLostPoint = lostPoint;
pattern = i;
}
} return pattern;
}; var setupTimingPattern = function() { for (var r = 8; r < _moduleCount - 8; r += 1) {
if (_modules[r][6] != null) {
continue;
}
_modules[r][6] = (r % 2 == 0);
} for (var c = 8; c < _moduleCount - 8; c += 1) {
if (_modules[6][c] != null) {
continue;
}
_modules[6][c] = (c % 2 == 0);
}
}; var setupPositionAdjustPattern = function() { var pos = QRUtil.getPatternPosition(_typeNumber); for (var i = 0; i < pos.length; i += 1) { for (var j = 0; j < pos.length; j += 1) { var row = pos[i];
var col = pos[j]; if (_modules[row][col] != null) {
continue;
} for (var r = -2; r <= 2; r += 1) { for (var c = -2; c <= 2; c += 1) { if (r == -2 || r == 2 || c == -2 || c == 2
|| (r == 0 && c == 0) ) {
_modules[row + r][col + c] = true;
} else {
_modules[row + r][col + c] = false;
}
}
}
}
}
}; var setupTypeNumber = function(test) { var bits = QRUtil.getBCHTypeNumber(_typeNumber); for (var i = 0; i < 18; i += 1) {
var mod = (!test && ( (bits >> i) & 1) == 1);
_modules[Math.floor(i / 3)][i % 3 + _moduleCount - 8 - 3] = mod;
} for (var i = 0; i < 18; i += 1) {
var mod = (!test && ( (bits >> i) & 1) == 1);
_modules[i % 3 + _moduleCount - 8 - 3][Math.floor(i / 3)] = mod;
}
}; var setupTypeInfo = function(test, maskPattern) { var data = (_errorCorrectLevel << 3) | maskPattern;
var bits = QRUtil.getBCHTypeInfo(data); // vertical
for (var i = 0; i < 15; i += 1) { var mod = (!test && ( (bits >> i) & 1) == 1); if (i < 6) {
_modules[i][8] = mod;
} else if (i < 8) {
_modules[i + 1][8] = mod;
} else {
_modules[_moduleCount - 15 + i][8] = mod;
}
} // horizontal
for (var i = 0; i < 15; i += 1) { var mod = (!test && ( (bits >> i) & 1) == 1); if (i < 8) {
_modules[8][_moduleCount - i - 1] = mod;
} else if (i < 9) {
_modules[8][15 - i - 1 + 1] = mod;
} else {
_modules[8][15 - i - 1] = mod;
}
} // fixed module
_modules[_moduleCount - 8][8] = (!test);
}; var mapData = function(data, maskPattern) { var inc = -1;
var row = _moduleCount - 1;
var bitIndex = 7;
var byteIndex = 0;
var maskFunc = QRUtil.getMaskFunction(maskPattern); for (var col = _moduleCount - 1; col > 0; col -= 2) { if (col == 6) col -= 1; while (true) { for (var c = 0; c < 2; c += 1) { if (_modules[row][col - c] == null) { var dark = false; if (byteIndex < data.length) {
dark = ( ( (data[byteIndex] >>> bitIndex) & 1) == 1);
} var mask = maskFunc(row, col - c); if (mask) {
dark = !dark;
} _modules[row][col - c] = dark;
bitIndex -= 1; if (bitIndex == -1) {
byteIndex += 1;
bitIndex = 7;
}
}
} row += inc; if (row < 0 || _moduleCount <= row) {
row -= inc;
inc = -inc;
break;
}
}
}
}; var 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 < rsBlocks.length; r += 1) { var dcCount = rsBlocks[r].dataCount;
var ecCount = rsBlocks[r].totalCount - dcCount; maxDcCount = Math.max(maxDcCount, dcCount);
maxEcCount = Math.max(maxEcCount, ecCount); dcdata[r] = new Array(dcCount); for (var i = 0; i < dcdata[r].length; i += 1) {
dcdata[r][i] = 0xff & buffer.getBuffer()[i + offset];
}
offset += dcCount; var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount);
var rawPoly = qrPolynomial(dcdata[r], rsPoly.getLength() - 1); var modPoly = rawPoly.mod(rsPoly);
ecdata[r] = new Array(rsPoly.getLength() - 1);
for (var i = 0; i < ecdata[r].length; i += 1) {
var modIndex = i + modPoly.getLength() - ecdata[r].length;
ecdata[r][i] = (modIndex >= 0)? modPoly.getAt(modIndex) : 0;
}
} var totalCodeCount = 0;
for (var i = 0; i < rsBlocks.length; i += 1) {
totalCodeCount += rsBlocks[i].totalCount;
} var data = new Array(totalCodeCount);
var index = 0; for (var i = 0; i < maxDcCount; i += 1) {
for (var r = 0; r < rsBlocks.length; r += 1) {
if (i < dcdata[r].length) {
data[index] = dcdata[r][i];
index += 1;
}
}
} for (var i = 0; i < maxEcCount; i += 1) {
for (var r = 0; r < rsBlocks.length; r += 1) {
if (i < ecdata[r].length) {
data[index] = ecdata[r][i];
index += 1;
}
}
} return data;
}; var createData = function(typeNumber, errorCorrectLevel, dataList) { var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel); var buffer = qrBitBuffer(); for (var i = 0; i < dataList.length; i += 1) {
var data = dataList[i];
buffer.put(data.getMode(), 4);
buffer.put(data.getLength(), QRUtil.getLengthInBits(data.getMode(), typeNumber) );
data.write(buffer);
} // calc num max data.
var totalDataCount = 0;
for (var i = 0; i < rsBlocks.length; i += 1) {
totalDataCount += rsBlocks[i].dataCount;
} if (buffer.getLengthInBits() > totalDataCount * 8) {
throw new Error('code length overflow. ('
+ buffer.getLengthInBits()
+ '>'
+ totalDataCount * 8
+ ')');
} // end code
if (buffer.getLengthInBits() + 4 <= totalDataCount * 8) {
buffer.put(0, 4);
} // padding
while (buffer.getLengthInBits() % 8 != 0) {
buffer.putBit(false);
} // padding
while (true) { if (buffer.getLengthInBits() >= totalDataCount * 8) {
break;
}
buffer.put(PAD0, 8); if (buffer.getLengthInBits() >= totalDataCount * 8) {
break;
}
buffer.put(PAD1, 8);
} return createBytes(buffer, rsBlocks);
}; _this.addData = function(data) {
var newData = qr8BitByte(data);
_dataList.push(newData);
_dataCache = null;
}; _this.isDark = function(row, col) {
if (row < 0 || _moduleCount <= row || col < 0 || _moduleCount <= col) {
throw new Error(row + ',' + col);
}
return _modules[row][col];
}; _this.getModuleCount = function() {
return _moduleCount;
}; _this.make = function() {
makeImpl(false, getBestMaskPattern() );
}; _this.createTableTag = function(cellSize, margin) { cellSize = cellSize || 2;
margin = (typeof margin == 'undefined')? cellSize * 4 : margin; var qrHtml = ''; qrHtml += '<table style="';
qrHtml += ' border-width: 0px; border-style: none;';
qrHtml += ' border-collapse: collapse;';
qrHtml += ' padding: 0px; margin: ' + margin + 'px;';
qrHtml += '">';
qrHtml += '<tbody>'; for (var r = 0; r < _this.getModuleCount(); r += 1) { qrHtml += '<tr>'; for (var c = 0; c < _this.getModuleCount(); c += 1) {
qrHtml += '<td style="';
qrHtml += ' border-width: 0px; border-style: none;';
qrHtml += ' border-collapse: collapse;';
qrHtml += ' padding: 0px; margin: 0px;';
qrHtml += ' width: ' + cellSize + 'px;';
qrHtml += ' height: ' + cellSize + 'px;';
qrHtml += ' background-color: ';
qrHtml += _this.isDark(r, c)? '#000000' : '#ffffff';
qrHtml += ';';
qrHtml += '"/>';
} qrHtml += '</tr>';
} qrHtml += '</tbody>';
qrHtml += '</table>'; return qrHtml;
}; _this.createImgTag = function(cellSize, margin) { cellSize = cellSize || 2;
margin = (typeof margin == 'undefined')? cellSize * 4 : margin; var size = _this.getModuleCount() * cellSize + margin * 2;
var min = margin;
var max = size - margin; return createImgTag(size, size, function(x, y) {
if (min <= x && x < max && min <= y && y < max) {
var c = Math.floor( (x - min) / cellSize);
var r = Math.floor( (y - min) / cellSize);
return _this.isDark(r, c)? 0 : 1;
} else {
return 1;
}
} );
}; return _this;
}; //---------------------------------------------------------------------
// qrcode.stringToBytes
//--------------------------------------------------------------------- qrcode.stringToBytes = function(s) {
var bytes = new Array();
for (var i = 0; i < s.length; i += 1) {
var c = s.charCodeAt(i);
bytes.push(c & 0xff);
}
return bytes;
}; //---------------------------------------------------------------------
// qrcode.createStringToBytes
//--------------------------------------------------------------------- /**
* @param unicodeData base64 string of byte array.
* [16bit Unicode],[16bit Bytes], ...
* @param numChars
*/
qrcode.createStringToBytes = function(unicodeData, numChars) { // create conversion map. var unicodeMap = function() { var bin = base64DecodeInputStream(unicodeData);
var read = function() {
var b = bin.read();
if (b == -1) throw new Error();
return b;
}; var count = 0;
var unicodeMap = {};
while (true) {
var b0 = bin.read();
if (b0 == -1) break;
var b1 = read();
var b2 = read();
var b3 = read();
var k = String.fromCharCode( (b0 << 8) | b1);
var v = (b2 << 8) | b3;
unicodeMap[k] = v;
count += 1;
}
if (count != numChars) {
throw new Error(count + ' != ' + numChars);
} return unicodeMap;
}(); var unknownChar = '?'.charCodeAt(0); return function(s) {
var bytes = new Array();
for (var i = 0; i < s.length; i += 1) {
var c = s.charCodeAt(i);
if (c < 128) {
bytes.push(c);
} else {
var b = unicodeMap[s.charAt(i)];
if (typeof b == 'number') {
if ( (b & 0xff) == b) {
// 1byte
bytes.push(b);
} else {
// 2bytes
bytes.push(b >>> 8);
bytes.push(b & 0xff);
}
} else {
bytes.push(unknownChar);
}
}
}
return bytes;
};
}; //---------------------------------------------------------------------
// QRMode
//--------------------------------------------------------------------- var QRMode = {
MODE_NUMBER : 1 << 0,
MODE_ALPHA_NUM : 1 << 1,
MODE_8BIT_BYTE : 1 << 2,
MODE_KANJI : 1 << 3
}; //---------------------------------------------------------------------
// QRErrorCorrectLevel
//--------------------------------------------------------------------- var QRErrorCorrectLevel = {
L : 1,
M : 0,
Q : 3,
H : 2
}; //---------------------------------------------------------------------
// QRMaskPattern
//--------------------------------------------------------------------- var QRMaskPattern = {
PATTERN000 : 0,
PATTERN001 : 1,
PATTERN010 : 2,
PATTERN011 : 3,
PATTERN100 : 4,
PATTERN101 : 5,
PATTERN110 : 6,
PATTERN111 : 7
}; //---------------------------------------------------------------------
// QRUtil
//--------------------------------------------------------------------- var QRUtil = function() { var 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]
];
var G15 = (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0);
var G18 = (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0);
var G15_MASK = (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1); var _this = {}; var getBCHDigit = function(data) {
var digit = 0;
while (data != 0) {
digit += 1;
data >>>= 1;
}
return digit;
}; _this.getBCHTypeInfo = function(data) {
var d = data << 10;
while (getBCHDigit(d) - getBCHDigit(G15) >= 0) {
d ^= (G15 << (getBCHDigit(d) - getBCHDigit(G15) ) );
}
return ( (data << 10) | d) ^ G15_MASK;
}; _this.getBCHTypeNumber = function(data) {
var d = data << 12;
while (getBCHDigit(d) - getBCHDigit(G18) >= 0) {
d ^= (G18 << (getBCHDigit(d) - getBCHDigit(G18) ) );
}
return (data << 12) | d;
}; _this.getPatternPosition = function(typeNumber) {
return PATTERN_POSITION_TABLE[typeNumber - 1];
}; _this.getMaskFunction = function(maskPattern) { switch (maskPattern) { case QRMaskPattern.PATTERN000 :
return function(i, j) { return (i + j) % 2 == 0; };
case QRMaskPattern.PATTERN001 :
return function(i, j) { return i % 2 == 0; };
case QRMaskPattern.PATTERN010 :
return function(i, j) { return j % 3 == 0; };
case QRMaskPattern.PATTERN011 :
return function(i, j) { return (i + j) % 3 == 0; };
case QRMaskPattern.PATTERN100 :
return function(i, j) { return (Math.floor(i / 2) + Math.floor(j / 3) ) % 2 == 0; };
case QRMaskPattern.PATTERN101 :
return function(i, j) { return (i * j) % 2 + (i * j) % 3 == 0; };
case QRMaskPattern.PATTERN110 :
return function(i, j) { return ( (i * j) % 2 + (i * j) % 3) % 2 == 0; };
case QRMaskPattern.PATTERN111 :
return function(i, j) { return ( (i * j) % 3 + (i + j) % 2) % 2 == 0; }; default :
throw new Error('bad maskPattern:' + maskPattern);
}
}; _this.getErrorCorrectPolynomial = function(errorCorrectLength) {
var a = qrPolynomial([1], 0);
for (var i = 0; i < errorCorrectLength; i += 1) {
a = a.multiply(qrPolynomial([1, QRMath.gexp(i)], 0) );
}
return a;
}; _this.getLengthInBits = function(mode, type) { if (1 <= type && type < 10) { // 1 - 9 switch(mode) {
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:' + mode);
} } else if (type < 27) { // 10 - 26 switch(mode) {
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:' + mode);
} } else if (type < 41) { // 27 - 40 switch(mode) {
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:' + mode);
} } else {
throw new Error('type:' + type);
}
}; _this.getLostPoint = function(qrcode) { var moduleCount = qrcode.getModuleCount(); var lostPoint = 0; // LEVEL1 for (var row = 0; row < moduleCount; row += 1) {
for (var col = 0; col < moduleCount; col += 1) { var sameCount = 0;
var dark = qrcode.isDark(row, col); for (var r = -1; r <= 1; r += 1) { if (row + r < 0 || moduleCount <= row + r) {
continue;
} for (var c = -1; c <= 1; c += 1) { if (col + c < 0 || moduleCount <= col + c) {
continue;
} if (r == 0 && c == 0) {
continue;
} if (dark == qrcode.isDark(row + r, col + c) ) {
sameCount += 1;
}
}
} if (sameCount > 5) {
lostPoint += (3 + sameCount - 5);
}
}
}; // LEVEL2 for (var row = 0; row < moduleCount - 1; row += 1) {
for (var col = 0; col < moduleCount - 1; col += 1) {
var count = 0;
if (qrcode.isDark(row, col) ) count += 1;
if (qrcode.isDark(row + 1, col) ) count += 1;
if (qrcode.isDark(row, col + 1) ) count += 1;
if (qrcode.isDark(row + 1, col + 1) ) count += 1;
if (count == 0 || count == 4) {
lostPoint += 3;
}
}
} // LEVEL3 for (var row = 0; row < moduleCount; row += 1) {
for (var col = 0; col < moduleCount - 6; col += 1) {
if (qrcode.isDark(row, col)
&& !qrcode.isDark(row, col + 1)
&& qrcode.isDark(row, col + 2)
&& qrcode.isDark(row, col + 3)
&& qrcode.isDark(row, col + 4)
&& !qrcode.isDark(row, col + 5)
&& qrcode.isDark(row, col + 6) ) {
lostPoint += 40;
}
}
} for (var col = 0; col < moduleCount; col += 1) {
for (var row = 0; row < moduleCount - 6; row += 1) {
if (qrcode.isDark(row, col)
&& !qrcode.isDark(row + 1, col)
&& qrcode.isDark(row + 2, col)
&& qrcode.isDark(row + 3, col)
&& qrcode.isDark(row + 4, col)
&& !qrcode.isDark(row + 5, col)
&& qrcode.isDark(row + 6, col) ) {
lostPoint += 40;
}
}
} // LEVEL4 var darkCount = 0; for (var col = 0; col < moduleCount; col += 1) {
for (var row = 0; row < moduleCount; row += 1) {
if (qrcode.isDark(row, col) ) {
darkCount += 1;
}
}
} var ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5;
lostPoint += ratio * 10; return lostPoint;
}; return _this;
}(); //---------------------------------------------------------------------
// QRMath
//--------------------------------------------------------------------- var QRMath = function() { var EXP_TABLE = new Array(256);
var LOG_TABLE = new Array(256); // initialize tables
for (var i = 0; i < 8; i += 1) {
EXP_TABLE[i] = 1 << i;
}
for (var i = 8; i < 256; i += 1) {
EXP_TABLE[i] = EXP_TABLE[i - 4]
^ EXP_TABLE[i - 5]
^ EXP_TABLE[i - 6]
^ EXP_TABLE[i - 8];
}
for (var i = 0; i < 255; i += 1) {
LOG_TABLE[EXP_TABLE[i] ] = i;
} var _this = {}; _this.glog = function(n) { if (n < 1) {
throw new Error('glog(' + n + ')');
} return LOG_TABLE[n];
}; _this.gexp = function(n) { while (n < 0) {
n += 255;
} while (n >= 256) {
n -= 255;
} return EXP_TABLE[n];
}; return _this;
}(); //---------------------------------------------------------------------
// qrPolynomial
//--------------------------------------------------------------------- function qrPolynomial(num, shift) { if (typeof num.length == 'undefined') {
throw new Error(num.length + '/' + shift);
} var _num = function() {
var offset = 0;
while (offset < num.length && num[offset] == 0) {
offset += 1;
}
var _num = new Array(num.length - offset + shift);
for (var i = 0; i < num.length - offset; i += 1) {
_num[i] = num[i + offset];
}
return _num;
}(); var _this = {}; _this.getAt = function(index) {
return _num[index];
}; _this.getLength = function() {
return _num.length;
}; _this.multiply = function(e) { var num = new Array(_this.getLength() + e.getLength() - 1); for (var i = 0; i < _this.getLength(); i += 1) {
for (var j = 0; j < e.getLength(); j += 1) {
num[i + j] ^= QRMath.gexp(QRMath.glog(_this.getAt(i) ) + QRMath.glog(e.getAt(j) ) );
}
} return qrPolynomial(num, 0);
}; _this.mod = function(e) { if (_this.getLength() - e.getLength() < 0) {
return _this;
} var ratio = QRMath.glog(_this.getAt(0) ) - QRMath.glog(e.getAt(0) ); var num = new Array(_this.getLength() );
for (var i = 0; i < _this.getLength(); i += 1) {
num[i] = _this.getAt(i);
} for (var i = 0; i < e.getLength(); i += 1) {
num[i] ^= QRMath.gexp(QRMath.glog(e.getAt(i) ) + ratio);
} // recursive call
return qrPolynomial(num, 0).mod(e);
}; return _this;
}; //---------------------------------------------------------------------
// QRRSBlock
//--------------------------------------------------------------------- var QRRSBlock = function() { var RS_BLOCK_TABLE = [ // L
// M
// Q
// H //
[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, 7, 37, 13], //
[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]
]; var qrRSBlock = function(totalCount, dataCount) {
var _this = {};
_this.totalCount = totalCount;
_this.dataCount = dataCount;
return _this;
}; var _this = {}; var getRsBlockTable = function(typeNumber, errorCorrectLevel) { switch(errorCorrectLevel) {
case QRErrorCorrectLevel.L :
return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
case QRErrorCorrectLevel.M :
return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
case QRErrorCorrectLevel.Q :
return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
case QRErrorCorrectLevel.H :
return RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
default :
return undefined;
}
}; _this.getRSBlocks = function(typeNumber, errorCorrectLevel) { var rsBlock = getRsBlockTable(typeNumber, errorCorrectLevel); if (typeof rsBlock == 'undefined') {
throw new Error('bad rs block @ typeNumber:' + typeNumber +
'/errorCorrectLevel:' + errorCorrectLevel);
} var length = rsBlock.length / 3; var list = new Array(); for (var i = 0; i < length; i += 1) { var count = rsBlock[i * 3 + 0];
var totalCount = rsBlock[i * 3 + 1];
var dataCount = rsBlock[i * 3 + 2]; for (var j = 0; j < count; j += 1) {
list.push(qrRSBlock(totalCount, dataCount) );
}
} return list;
}; return _this;
}(); //---------------------------------------------------------------------
// qrBitBuffer
//--------------------------------------------------------------------- var qrBitBuffer = function() { var _buffer = new Array();
var _length = 0; var _this = {}; _this.getBuffer = function() {
return _buffer;
}; _this.getAt = function(index) {
var bufIndex = Math.floor(index / 8);
return ( (_buffer[bufIndex] >>> (7 - index % 8) ) & 1) == 1;
}; _this.put = function(num, length) {
for (var i = 0; i < length; i += 1) {
_this.putBit( ( (num >>> (length - i - 1) ) & 1) == 1);
}
}; _this.getLengthInBits = function() {
return _length;
}; _this.putBit = function(bit) { var bufIndex = Math.floor(_length / 8);
if (_buffer.length <= bufIndex) {
_buffer.push(0);
} if (bit) {
_buffer[bufIndex] |= (0x80 >>> (_length % 8) );
} _length += 1;
}; return _this;
}; //---------------------------------------------------------------------
// qr8BitByte
//--------------------------------------------------------------------- var qr8BitByte = function(data) { var _mode = QRMode.MODE_8BIT_BYTE;
var _data = data;
var _bytes = qrcode.stringToBytes(data); var _this = {}; _this.getMode = function() {
return _mode;
}; _this.getLength = function(buffer) {
return _bytes.length;
}; _this.write = function(buffer) {
for (var i = 0; i < _bytes.length; i += 1) {
buffer.put(_bytes[i], 8);
}
}; return _this;
}; //=====================================================================
// GIF Support etc.
// //---------------------------------------------------------------------
// byteArrayOutputStream
//--------------------------------------------------------------------- var byteArrayOutputStream = function() { var _bytes = new Array(); var _this = {}; _this.writeByte = function(b) {
_bytes.push(b & 0xff);
}; _this.writeShort = function(i) {
_this.writeByte(i);
_this.writeByte(i >>> 8);
}; _this.writeBytes = function(b, off, len) {
off = off || 0;
len = len || b.length;
for (var i = 0; i < len; i += 1) {
_this.writeByte(b[i + off]);
}
}; _this.writeString = function(s) {
for (var i = 0; i < s.length; i += 1) {
_this.writeByte(s.charCodeAt(i) );
}
}; _this.toByteArray = function() {
return _bytes;
}; _this.toString = function() {
var s = '';
s += '[';
for (var i = 0; i < _bytes.length; i += 1) {
if (i > 0) {
s += ',';
}
s += _bytes[i];
}
s += ']';
return s;
}; return _this;
}; //---------------------------------------------------------------------
// base64EncodeOutputStream
//--------------------------------------------------------------------- var base64EncodeOutputStream = function() { var _buffer = 0;
var _buflen = 0;
var _length = 0;
var _base64 = ''; var _this = {}; var writeEncoded = function(b) {
_base64 += String.fromCharCode(encode(b & 0x3f) );
}; var encode = function(n) {
if (n < 0) {
// error.
} else if (n < 26) {
return 0x41 + n;
} else if (n < 52) {
return 0x61 + (n - 26);
} else if (n < 62) {
return 0x30 + (n - 52);
} else if (n == 62) {
return 0x2b;
} else if (n == 63) {
return 0x2f;
}
throw new Error('n:' + n);
}; _this.writeByte = function(n) { _buffer = (_buffer << 8) | (n & 0xff);
_buflen += 8;
_length += 1; while (_buflen >= 6) {
writeEncoded(_buffer >>> (_buflen - 6) );
_buflen -= 6;
}
}; _this.flush = function() { if (_buflen > 0) {
writeEncoded(_buffer << (6 - _buflen) );
_buffer = 0;
_buflen = 0;
} if (_length % 3 != 0) {
// padding
var padlen = 3 - _length % 3;
for (var i = 0; i < padlen; i += 1) {
_base64 += '=';
}
}
}; _this.toString = function() {
return _base64;
}; return _this;
}; //---------------------------------------------------------------------
// base64DecodeInputStream
//--------------------------------------------------------------------- var base64DecodeInputStream = function(str) { var _str = str;
var _pos = 0;
var _buffer = 0;
var _buflen = 0; var _this = {}; _this.read = function() { while (_buflen < 8) { if (_pos >= _str.length) {
if (_buflen == 0) {
return -1;
}
throw new Error('unexpected end of file./' + _buflen);
} var c = _str.charAt(_pos);
_pos += 1; if (c == '=') {
_buflen = 0;
return -1;
} else if (c.match(/^\s$/) ) {
// ignore if whitespace.
continue;
} _buffer = (_buffer << 6) | decode(c.charCodeAt(0) );
_buflen += 6;
} var n = (_buffer >>> (_buflen - 8) ) & 0xff;
_buflen -= 8;
return n;
}; var decode = function(c) {
if (0x41 <= c && c <= 0x5a) {
return c - 0x41;
} else if (0x61 <= c && c <= 0x7a) {
return c - 0x61 + 26;
} else if (0x30 <= c && c <= 0x39) {
return c - 0x30 + 52;
} else if (c == 0x2b) {
return 62;
} else if (c == 0x2f) {
return 63;
} else {
throw new Error('c:' + c);
}
}; return _this;
}; //---------------------------------------------------------------------
// gifImage (B/W)
//--------------------------------------------------------------------- var gifImage = function(width, height) { var _width = width;
var _height = height;
var _data = new Array(width * height); var _this = {}; _this.setPixel = function(x, y, pixel) {
_data[y * _width + x] = pixel;
}; _this.write = function(out) { //---------------------------------
// GIF Signature out.writeString('GIF87a'); //---------------------------------
// Screen Descriptor out.writeShort(_width);
out.writeShort(_height); out.writeByte(0x80); // 2bit
out.writeByte(0);
out.writeByte(0); //---------------------------------
// Global Color Map // black
out.writeByte(0x00);
out.writeByte(0x00);
out.writeByte(0x00); // white
out.writeByte(0xff);
out.writeByte(0xff);
out.writeByte(0xff); //---------------------------------
// Image Descriptor out.writeString(',');
out.writeShort(0);
out.writeShort(0);
out.writeShort(_width);
out.writeShort(_height);
out.writeByte(0); //---------------------------------
// Local Color Map //---------------------------------
// Raster Data var lzwMinCodeSize = 2;
var raster = getLZWRaster(lzwMinCodeSize); out.writeByte(lzwMinCodeSize); var offset = 0; while (raster.length - offset > 255) {
out.writeByte(255);
out.writeBytes(raster, offset, 255);
offset += 255;
} out.writeByte(raster.length - offset);
out.writeBytes(raster, offset, raster.length - offset);
out.writeByte(0x00); //---------------------------------
// GIF Terminator
out.writeString(';');
}; var bitOutputStream = function(out) { var _out = out;
var _bitLength = 0;
var _bitBuffer = 0; var _this = {}; _this.write = function(data, length) { if ( (data >>> length) != 0) {
throw new Error('length over');
} while (_bitLength + length >= 8) {
_out.writeByte(0xff & ( (data << _bitLength) | _bitBuffer) );
length -= (8 - _bitLength);
data >>>= (8 - _bitLength);
_bitBuffer = 0;
_bitLength = 0;
} _bitBuffer = (data << _bitLength) | _bitBuffer;
_bitLength = _bitLength + length;
}; _this.flush = function() {
if (_bitLength > 0) {
_out.writeByte(_bitBuffer);
}
}; return _this;
}; var getLZWRaster = function(lzwMinCodeSize) { var clearCode = 1 << lzwMinCodeSize;
var endCode = (1 << lzwMinCodeSize) + 1;
var bitLength = lzwMinCodeSize + 1; // Setup LZWTable
var table = lzwTable(); for (var i = 0; i < clearCode; i += 1) {
table.add(String.fromCharCode(i) );
}
table.add(String.fromCharCode(clearCode) );
table.add(String.fromCharCode(endCode) ); var byteOut = byteArrayOutputStream();
var bitOut = bitOutputStream(byteOut); // clear code
bitOut.write(clearCode, bitLength); var dataIndex = 0; var s = String.fromCharCode(_data[dataIndex]);
dataIndex += 1; while (dataIndex < _data.length) { var c = String.fromCharCode(_data[dataIndex]);
dataIndex += 1; if (table.contains(s + c) ) { s = s + c; } else { bitOut.write(table.indexOf(s), bitLength); if (table.size() < 0xfff) { if (table.size() == (1 << bitLength) ) {
bitLength += 1;
} table.add(s + c);
} s = c;
}
} bitOut.write(table.indexOf(s), bitLength); // end code
bitOut.write(endCode, bitLength); bitOut.flush(); return byteOut.toByteArray();
}; var lzwTable = function() { var _map = {};
var _size = 0; var _this = {}; _this.add = function(key) {
if (_this.contains(key) ) {
throw new Error('dup key:' + key);
}
_map[key] = _size;
_size += 1;
}; _this.size = function() {
return _size;
}; _this.indexOf = function(key) {
return _map[key];
}; _this.contains = function(key) {
return typeof _map[key] != 'undefined';
}; return _this;
}; return _this;
}; var createImgTag = function(width, height, getPixel, alt) { var gif = gifImage(width, height);
for (var y = 0; y < height; y += 1) {
for (var x = 0; x < width; x += 1) {
gif.setPixel(x, y, getPixel(x, y) );
}
} var b = byteArrayOutputStream();
gif.write(b); var base64 = base64EncodeOutputStream();
var bytes = b.toByteArray();
for (var i = 0; i < bytes.length; i += 1) {
base64.writeByte(bytes[i]);
}
base64.flush(); var img = '';
img += '<img';
img += '\u0020src="';
img += 'data:image/gif;base64,';
img += base64;
img += '"';
img += '\u0020width="';
img += width;
img += '"';
img += '\u0020height="';
img += height;
img += '"';
if (alt) {
img += '\u0020alt="';
img += alt;
img += '"';
}
img += '/>'; return img;
}; //---------------------------------------------------------------------
// returns qrcode function. return qrcode;
}(); (function (factory) {
if (typeof define === 'function' && define.amd) {
define([], factory);
} else if (typeof exports === 'object') {
module.exports = factory();
}
}(function () {
return qrcode;
}));
//---------------------------------------------------------------------
//
// QR Code Generator for JavaScript UTF8 Support (optional)
//
// Copyright (c) 2011 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(qrcode) { //---------------------------------------------------------------------
// overwrite qrcode.stringToBytes
//--------------------------------------------------------------------- qrcode.stringToBytes = function(s) {
// http://stackoverflow.com/questions/18729405/how-to-convert-utf8-string-to-byte-array
function toUTF8Array(str) {
var utf8 = [];
for (var i=0; i < str.length; i++) {
var charcode = str.charCodeAt(i);
if (charcode < 0x80) utf8.push(charcode);
else if (charcode < 0x800) {
utf8.push(0xc0 | (charcode >> 6),
0x80 | (charcode & 0x3f));
}
else if (charcode < 0xd800 || charcode >= 0xe000) {
utf8.push(0xe0 | (charcode >> 12),
0x80 | ((charcode>>6) & 0x3f),
0x80 | (charcode & 0x3f));
}
// surrogate pair
else {
i++;
// UTF-16 encodes 0x10000-0x10FFFF by
// subtracting 0x10000 and splitting the
// 20 bits of 0x0-0xFFFFF into two halves
charcode = 0x10000 + (((charcode & 0x3ff)<<10)
| (str.charCodeAt(i) & 0x3ff));
utf8.push(0xf0 | (charcode >>18),
0x80 | ((charcode>>12) & 0x3f),
0x80 | ((charcode>>6) & 0x3f),
0x80 | (charcode & 0x3f));
}
}
return utf8;
}
return toUTF8Array(s);
}; }(qrcode); return qrcode; // eslint-disable-line no-undef
}()));