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bramblex/qrcode.js

Created November 12, 2019 02:55
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qrcode.js
/**
* @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 <a href="http://www.d-project.com/" target="_blank">http://www.d-project.com/</a>
* @see <a href="http://jeromeetienne.github.com/jquery-qrcode/" target="_blank">http://jeromeetienne.github.com/jquery-qrcode/</a>
*/
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 < this.moduleCount; row++) {
this.modules[row] = new Array(this.moduleCount)
for (var col = 0; col < this.moduleCount; col++) {
this.modules[row][col] = null
}
}
this.setupPositionProbePattern(0, 0)
this.setupPositionProbePattern(this.moduleCount - 7, 0)
this.setupPositionProbePattern(0, this.moduleCount - 7)
this.setupPositionAdjustPattern()
this.setupTimingPattern()
this.setupTypeInfo(test, maskPattern)
if (this.typeNumber >= 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 < this.modules.length; row++) {
var y = row * cs
for (var col = 0; col < this.modules[row].length; col++) {
var x = col * cs
var dark = this.modules[row][col]
if (dark) {
qr_mc.beginFill(0, 100)
qr_mc.moveTo(x, y)
qr_mc.lineTo(x + cs, y)
qr_mc.lineTo(x + cs, y + cs)
qr_mc.lineTo(x, y + cs)
qr_mc.endFill()
}
}
}
return qr_mc
}, setupTimingPattern: function () {
for (var r = 8; r < this.moduleCount - 8; r++) {
if (this.modules[r][6] != null) {
continue
}
this.modules[r][6] = (r % 2 == 0)
}
for (var c = 8; c < this.moduleCount - 8; c++) {
if (this.modules[6][c] != null) {
continue
}
this.modules[6][c] = (c % 2 == 0)
}
}, setupPositionAdjustPattern: function () {
var pos = QRUtil.getPatternPosition(this.typeNumber)
for (var i = 0; i < pos.length; i++) {
for (var j = 0; j < pos.length; j++) {
var row = pos[i]
var col = pos[j]
if (this.modules[row][col] != null) {
continue
}
for (var r = -2; r <= 2; r++) {
for (var c = -2; c <= 2; c++) {
if (r == -2 || r == 2 || c == -2 || c == 2 || (r == 0 && c == 0)) {
this.modules[row + r][col + c] = true
} else {
this.modules[row + r][col + c] = false
}
}
}
}
}
}, setupTypeNumber: function (test) {
var bits = QRUtil.getBCHTypeNumber(this.typeNumber)
for (var i = 0; i < 18; i++) {
var mod = (!test && ((bits >> 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 < data.length) {
dark = (((data[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; i < dataList.length; i++) {
var data = dataList[i]
buffer.put(data.mode, 4)
buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber))
data.write(buffer)
}
var totalDataCount = 0
for (var i = 0; i < rsBlocks.length; i++) {
totalDataCount += rsBlocks[i].dataCount
}
if (buffer.getLengthInBits() > totalDataCount * 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 < rsBlocks.length; r++) {
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++) {
dcdata[r][i] = 0xff & buffer.buffer[i + offset]
}
offset += dcCount
var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount)
var rawPoly = new 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++) {
var modIndex = i + modPoly.getLength() - ecdata[r].length
ecdata[r][i] = (modIndex >= 0) ? modPoly.get(modIndex) : 0
}
}
var totalCodeCount = 0
for (var i = 0; i < rsBlocks.length; i++) {
totalCodeCount += rsBlocks[i].totalCount
}
var data = new Array(totalCodeCount)
var index = 0
for (var i = 0; i < maxDcCount; i++) {
for (var r = 0; r < rsBlocks.length; r++) {
if (i < dcdata[r].length) {
data[index++] = dcdata[r][i]
}
}
}
for (var i = 0; i < maxEcCount; i++) {
for (var r = 0; r < rsBlocks.length; r++) {
if (i < ecdata[r].length) {
data[index++] = ecdata[r][i]
}
}
}
return data
}
var QRMode = {MODE_NUMBER: 1 << 0, MODE_ALPHA_NUM: 1 << 1, MODE_8BIT_BYTE: 1 << 2, MODE_KANJI: 1 << 3}
var QRErrorCorrectLevel = {L: 1, M: 0, Q: 3, H: 2}
var QRMaskPattern = {
PATTERN000: 0,
PATTERN001: 1,
PATTERN010: 2,
PATTERN011: 3,
PATTERN100: 4,
PATTERN101: 5,
PATTERN110: 6,
PATTERN111: 7
}
var QRUtil = {
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: (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0),
G18: (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0),
G15_MASK: (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1),
getBCHTypeInfo: function (data) {
var d = data << 10
while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) >= 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; i < errorCorrectLength; i++) {
a = a.multiply(new QRPolynomial([1, QRMath.gexp(i)], 0))
}
return a
},
getLengthInBits: function (mode, type) {
if (1 <= type && type < 10) {
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) {
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) {
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)
}
},
getLostPoint: function (qrCode) {
var moduleCount = qrCode.getModuleCount()
var lostPoint = 0
for (var row = 0; row < moduleCount; row++) {
for (var col = 0; col < moduleCount; col++) {
var sameCount = 0
var dark = qrCode.isDark(row, col)
for (var r = -1; r <= 1; r++) {
if (row + r < 0 || moduleCount <= row + r) {
continue
}
for (var c = -1; c <= 1; c++) {
if (col + c < 0 || moduleCount <= col + c) {
continue
}
if (r == 0 && c == 0) {
continue
}
if (dark == qrCode.isDark(row + r, col + c)) {
sameCount++
}
}
}
if (sameCount > 5) {
lostPoint += (3 + sameCount - 5)
}
}
}
for (var row = 0; row < moduleCount - 1; row++) {
for (var col = 0; col < moduleCount - 1; col++) {
var count = 0
if (qrCode.isDark(row, col)) count++
if (qrCode.isDark(row + 1, col)) count++
if (qrCode.isDark(row, col + 1)) count++
if (qrCode.isDark(row + 1, col + 1)) count++
if (count == 0 || count == 4) {
lostPoint += 3
}
}
}
for (var row = 0; row < moduleCount; row++) {
for (var col = 0; col < moduleCount - 6; col++) {
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++) {
for (var row = 0; row < moduleCount - 6; row++) {
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
}
}
}
var darkCount = 0
for (var col = 0; col < moduleCount; col++) {
for (var row = 0; row < moduleCount; row++) {
if (qrCode.isDark(row, col)) {
darkCount++
}
}
}
var ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5
lostPoint += ratio * 10
return lostPoint
}
}
var QRMath = {
glog: function (n) {
if (n < 1) {
throw new Error('glog(' + n + ')')
}
return QRMath.LOG_TABLE[n]
}, gexp: function (n) {
while (n < 0) {
n += 255
}
while (n >= 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 << i
}
for (var i = 8; i < 256; i++) {
QRMath.EXP_TABLE[i] = QRMath.EXP_TABLE[i - 4] ^ QRMath.EXP_TABLE[i - 5] ^ QRMath.EXP_TABLE[i - 6] ^ QRMath.EXP_TABLE[i - 8]
}
for (var i = 0; i < 255; i++) {
QRMath.LOG_TABLE[QRMath.EXP_TABLE[i]] = i
}
function QRPolynomial(num, shift) {
if (num.length == undefined) {
throw new Error(num.length + '/' + shift)
}
var offset = 0
while (offset < num.length && num[offset] == 0) {
offset++
}
this.num = new Array(num.length - offset + shift)
for (var i = 0; i < num.length - offset; i++) {
this.num[i] = num[i + offset]
}
}
QRPolynomial.prototype = {
get: function (index) {
return this.num[index]
}, getLength: function () {
return this.num.length
}, multiply: function (e) {
var num = new Array(this.getLength() + e.getLength() - 1)
for (var i = 0; i < this.getLength(); i++) {
for (var j = 0; j < e.getLength(); j++) {
num[i + j] ^= QRMath.gexp(QRMath.glog(this.get(i)) + QRMath.glog(e.get(j)))
}
}
return new QRPolynomial(num, 0)
}, mod: function (e) {
if (this.getLength() - e.getLength() < 0) {
return this
}
var ratio = QRMath.glog(this.get(0)) - QRMath.glog(e.get(0))
var num = new Array(this.getLength())
for (var i = 0; i < this.getLength(); i++) {
num[i] = this.get(i)
}
for (var i = 0; i < e.getLength(); i++) {
num[i] ^= QRMath.gexp(QRMath.glog(e.get(i)) + ratio)
}
return new QRPolynomial(num, 0).mod(e)
}
}
function QRRSBlock(totalCount, dataCount) {
this.totalCount = totalCount
this.dataCount = dataCount
}
QRRSBlock.RS_BLOCK_TABLE = [[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]]
QRRSBlock.getRSBlocks = function (typeNumber, errorCorrectLevel) {
var rsBlock = QRRSBlock.getRsBlockTable(typeNumber, errorCorrectLevel)
if (rsBlock == undefined) {
throw new Error('bad rs block @ typeNumber:' + typeNumber + '/errorCorrectLevel:' + errorCorrectLevel)
}
var length = rsBlock.length / 3
var list = []
for (var i = 0; i < length; i++) {
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++) {
list.push(new QRRSBlock(totalCount, dataCount))
}
}
return list
}
QRRSBlock.getRsBlockTable = function (typeNumber, errorCorrectLevel) {
switch (errorCorrectLevel) {
case QRErrorCorrectLevel.L:
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0]
case QRErrorCorrectLevel.M:
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1]
case QRErrorCorrectLevel.Q:
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2]
case QRErrorCorrectLevel.H:
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3]
default:
return undefined
}
}
function QRBitBuffer() {
this.buffer = []
this.length = 0
}
QRBitBuffer.prototype = {
get: function (index) {
var bufIndex = Math.floor(index / 8)
return ((this.buffer[bufIndex] >>> (7 - index % 8)) & 1) == 1
}, put: function (num, length) {
for (var i = 0; i < length; i++) {
this.putBit(((num >>> (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
}
// Drawing in DOM by using Table tag
var Drawing = (function () {
var Drawing = function (el, htOption) {
this._el = el
this._htOption = htOption
}
/**
* Draw the QRCode
*
* @param {QRCode} oQRCode
*/
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)
var aHTML = ['<table style="border:0;border-collapse:collapse;">']
for (var row = 0; row < nCount; row++) {
aHTML.push('<tr>')
for (var col = 0; col < nCount; col++) {
aHTML.push('<td style="border:0;border-collapse:collapse;padding:0;margin:0;width:' + nWidth + 'px;height:' + nHeight + 'px;background-color:' + (oQRCode.isDark(row, col) ? _htOption.colorDark : _htOption.colorLight) + ';"></td>')
}
aHTML.push('</tr>')
}
aHTML.push('</table>')
_el.innerHTML = aHTML.join('')
// Fix the margin values as real size.
var elTable = _el.childNodes[0]
var nLeftMarginTable = (_htOption.width - elTable.offsetWidth) / 2
var nTopMarginTable = (_htOption.height - elTable.offsetHeight) / 2
if (nLeftMarginTable > 0 && nTopMarginTable > 0) {
elTable.style.margin = nTopMarginTable + 'px ' + nLeftMarginTable + 'px'
}
}
/**
* Clear the QRCode
*/
Drawing.prototype.clear = function () {
this._el.innerHTML = ''
}
return Drawing
})()
/**
* 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)
}
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
/**
* 用来直接将二维码画在现有的 context 上面
* @param cxt
* @param text
* @param _options
*/
QRCode.drawOnCxt = function (cxt, text, _options) {
const options = Object.assign({
x: 0,
y: 0,
width: 256,
height: 256,
typeNumber: 4,
colorDark: '#000000',
colorLight: '#ffffff',
correctLevel: QRErrorCorrectLevel.H
}, _options)
const model = new QRCodeModel(_getTypeNumber(text, options.correctLevel), options.correctLevel)
model.addData(text)
model.make()
const nCount = model.getModuleCount()
const nWidth = options.width / nCount
const nHeight = options.height / nCount
const nRoundedWidth = Math.round(nWidth)
const nRoundedHeight = Math.round(nHeight)
const nOffsetX = options.x
const nOffsetY = options.y
for (let row = 0; row < nCount; row++) {
for (let col = 0; col < nCount; col++) {
const bIsDark = model.isDark(row, col)
// 整体加上 offset 绘制 二维码
const nLeft = col * nWidth + nOffsetX
const nTop = row * nHeight + nOffsetY
cxt.strokeStyle = bIsDark ? options.colorDark : options.colorLight
cxt.lineWidth = 1
cxt.fillStyle = bIsDark ? options.colorDark : options.colorLight
cxt.fillRect(nLeft, nTop, nWidth, nHeight)
// 抗锯齿处理所以要画两遍，我也不知道原理，反正韩国人写的
cxt.strokeRect(
Math.floor(nLeft) + 0.5, Math.floor(nTop) + 0.5,
nRoundedWidth, nRoundedHeight
)
cxt.strokeRect(
Math.ceil(nLeft) - 0.5, Math.ceil(nTop) - 0.5,
nRoundedWidth, nRoundedHeight
)
}
}
}
})()
export default QRCode
Raw
share-card.js
import QRCode from './qrcode'
function preloadImage(item) {
if (item.image) {
return Promise.resolve(item)
} else {
return new Promise((resolve, reject) => {
const image = new Image()
image.setAttribute('crossOrigin', 'Anonymous')
image.onload = () => {
item.image = image
resolve(item)
}
image.onerror = reject
image.src = item.src
})
}
}
function drawImage(ctx, item) {
const x = item.x || 0
const y = item.y || 0
const radius = item.radius || 0
const round = item.round || false
const width = item.width || item.image.width
const height = item.height || item.image.height
if (radius) {
const r = Math.min(radius, width / 2, height / 2)
ctx.beginPath();
ctx.moveTo(x + r, y);
ctx.arcTo(x + width, y, x + width, y + height, r);
ctx.arcTo(x + width, y + height, x, y + height, r);
ctx.arcTo(x, y + height, x, y, r);
ctx.arcTo(x, y, x + width, y, r);
ctx.clip()
} else if (round) {
const oX = x + (width / 2)
const oY = y + (height / 2)
const r = Math.min(width / 2, height / 2)
ctx.arc(oX, oY, r, 0, 2 * Math.PI)
ctx.clip()
}
ctx.drawImage(item.image, x, y, width, height)
}
function drawQRCode(ctx, item) {
QRCode.drawOnCxt(ctx, item.text, {
x: item.x || 0,
y: item.y || 0,
width: item.size || 256,
height: item.size || 256
})
}
function drawText(ctx, item) {
ctx.font = item.font || ctx.item
ctx.textAlign = item.align || 'center'
ctx.textBaseline = item.baseline || 'middle'
ctx.fillStyle = item.color || ctx.fillStyle
ctx.strokeStyle = item.stroke || ctx.strokeStyle
if (!item.width) {
ctx.fillText(item.text, item.x, item.y)
} else {
const fontSize = parseInt(ctx.font.match(/(\d+)px/)[1])
const lineSpace = Math.floor(fontSize * (item.lineSpace || 0.2))
const dY = fontSize + lineSpace
const chars = item.text.split('')
const texts = []
const isEn = char => /^[0-9a-zA-Z_\-]$/.test(char)
let current = ''
for (let i = 0; i < chars.length; i++) {
let world = ''
if (isEn(chars[i])) {
for (i; i < chars.length; i++) {
const char = chars[i]
if (isEn(char)) {
world += char
} else {
i--
break
}
}
} else {
world = chars[i]
}
if (world === '\n') {
texts.push(current)
current = ''
}
if (ctx.measureText(current + world).width > item.width) {
texts.push(current)
current = world
} else {
current += world
}
}
texts.push(current)
let y = item.y
for (const text of texts) {
ctx.fillText(text, item.x, y)
y += dY
}
}
}
const preloadFuncMap = {
image: preloadImage
}
const drawFuncMap = {
text: drawText,
qrcode: drawQRCode,
image: drawImage
}
function preload(items) {
return Promise.all(items.map(item => {
const preloadFunc = preloadFuncMap[item.type]
if (preloadFunc) {
return preloadFunc(item)
} else {
return Promise.resolve(item)
}
}))
}
function draw(canvas, width, height, _items) {
return preload(_items).then(items => {
canvas.height = height
canvas.width = width
items.forEach(item => {
const ctx = canvas.getContext('2d')
ctx.save()
const drawFunc = drawFuncMap[item.type]
if (drawFunc) {
drawFunc(ctx, item)
} else {
console.warn(`Cannot match type with type ${item.type}`, item)
}
ctx.restore()
})
const dataURL = canvas.toDataURL('image/jpeg')
// 这里会重置 canvas
canvas.width = 0
canvas.height = 0
return Promise.resolve(dataURL)
})
}
export default {
draw,
QRCode
}
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