js二维码生成插件jquery.qrcode.js如何自定义LOGO
更新时间：2024年11月02日 09:01:21 作者：青春的西瓜
介绍如何将jquery.qrcode.min.js与jquery集成到网页中,生成带LOGO的二维码,提供了修改代码以支持LOGO上传的步骤,并给出注意事项以确保二维码的识别效果
介绍如何将jquery.qrcode.min.js与jquery集成到网页中,生成带LOGO的二维码,提供了修改代码以支持LOGO上传的步骤,并给出注意事项以确保二维码的识别效果。
1.将jquery.qrcode.min.js和jquery添加到您的网页中
<script src="https://apps.bdimg.com/libs/jquery/1.11.3/jquery.min.js"></script> <script src="https://apps.bdimg.com/libs/jquery-qrcode/1.0.0/jquery.qrcode.min.js"></script>
2.然后创建一个DOM元素去包含生成qr码
<div id="qrcode"></div>
3.生成原生二维码
$("#qrcode").qrcode({
render: "canvas", //设置渲染方式，有table和canvas，使用canvas方式渲染性能相对来说比较好
text: "我最帅...", //扫描二维码后显示的内容,可以直接填一个网址，扫描二维码后自动跳向该链接
width: "196", //二维码的宽度
height: "196", //二维码的高度
background: "#ffffff", //二维码的后景色
foreground: "#000000" //二维码的前景色
});4.原二维码效果图
5.修改原有jquery.qrcode.js,(以下代码替换原有jquery.qrcode.js)
function QR8bitByte(a) {
this.mode = QRMode.MODE_8BIT_BYTE,
this.data = a
}
function QRCode(a, b) {
this.typeNumber = a,
this.errorCorrectLevel = b,
this.modules = null,
this.moduleCount = 0,
this.dataCache = null,
this.dataList = new Array()
}
function QRPolynomial(a, b) {
var c, d;
if (void 0 == a.length) {
throw new Error(a.length + "/" + b)
}
for (c = 0; c < a.length && 0 == a[c];) {
c++
}
for (this.num = new Array(a.length - c + b), d = 0; d < a.length - c; d++) {
this.num[d] = a[d + c]
}
}
function QRRSBlock(a, b) {
this.totalCount = a,
this.dataCount = b
}
function QRBitBuffer() {
this.buffer = new Array(),
this.length = 0
}
var QRMode, QRErrorCorrectLevel, QRMaskPattern, QRUtil, QRMath, i;
for (function (a) {
a.fn.qrcode = function (b) {
var c, d;
return "string" == typeof b && (b = {text: b}),
b = a.extend({}, {
render: "canvas",
width: 256,
height: 256,
//这里是图片的高度和宽度
imgWidth: b.width / 4.7,
imgHeight: b.height / 4.7,
typeNumber: -1,
correctLevel: QRErrorCorrectLevel.H,
background: "#ffffff",
foreground: "#000000"
}, b), c = function () {
var c, d, e, f, g, h, i, j, k, a = new QRCode(b.typeNumber, b.correctLevel);
for (a.addData(utf16to8(b.text)), a.make(),
c = document.createElement("canvas"),
c.width = b.width, c.height = b.height, d = c.getContext("2d"),
b.src && (e = new Image(), e.src = b.src, e.onload = function () {
d.drawImage(e, (b.width - b.imgWidth) / 2, (b.height - b.imgHeight) / 2,
b.imgWidth, b.imgHeight)
}), f = b.width / a.getModuleCount(),
g = b.height / a.getModuleCount(), h = 0; h < a.getModuleCount(); h++) {
for (i = 0; i < a.getModuleCount(); i++) {
d.fillStyle = a.isDark(h, i) ? b.foreground : b.background,
j = Math.ceil((i + 1) * f) - Math.floor(i * f),
k = Math.ceil((h + 1) * f) - Math.floor(h * f),
d.fillRect(Math.round(i * f), Math.round(h * g), j, k)
}
}
return c
},
d = function () {
var d, e, f, g, h, i,
c = new QRCode(b.typeNumber, b.correctLevel);
//这里的utf16to8(b.text)是对Text中的字符串进行转码，让其支持中文
for (c.addData(utf16to8(b.text)), c.make(), d = a("<table></table>").css("width", b.width + "px").css("height", b.height + "px").css("border", "0px").css("border-collapse", "collapse").css("background-color", b.background), e = b.width / c.getModuleCount(), f = b.height / c.getModuleCount(), g = 0; g < c.getModuleCount(); g++) {
for (h = a("<tr></tr>").css("height", f + "px").appendTo(d), i = 0; i < c.getModuleCount(); i++) {
a("<td></td>").css("width", e + "px").css("background-color", c.isDark(g, i) ? b.foreground : b.background).appendTo(h)
}
}
return d
}, this.each(function () {
var e = "canvas" == b.render ? c() : d();
a(e).appendTo(this)
})
}
}(jQuery), QR8bitByte.prototype = {
getLength: function () {
return this.data.length
}, write: function (a) {
for (var b = 0; b < this.data.length; b++) {
a.put(this.data.charCodeAt(b), 8)
}
}
}, QRCode.prototype = {
addData: function (a) {
var b = new QR8bitByte(a);
this.dataList.push(b), this.dataCache = null
}, isDark: function (a, b) {
if (0 > a || this.moduleCount <= a || 0 > b || this.moduleCount <= b) {
throw new Error(a + "," + b)
}
return this.modules[a][b]
}, getModuleCount: function () {
return this.moduleCount
}, make: function () {
var a, b, c, d, e, f;
if (this.typeNumber < 1) {
for (a = 1, a = 1; 40 > a; a++) {
for (b = QRRSBlock.getRSBlocks(a, this.errorCorrectLevel), c = new QRBitBuffer(), d = 0, e = 0; e < b.length; e++) {
d += b[e].dataCount
}
for (e = 0; e < this.dataList.length; e++) {
f = this.dataList[e], c.put(f.mode, 4), c.put(f.getLength(), QRUtil.getLengthInBits(f.mode, a)), f.write(c)
}
if (c.getLengthInBits() <= 8 * d) {
break
}
}
this.typeNumber = a
}
this.makeImpl(!1, this.getBestMaskPattern())
}, makeImpl: function (a, b) {
var c, d;
for (this.moduleCount = 4 * this.typeNumber + 17, this.modules = new Array(this.moduleCount), c = 0; c < this.moduleCount; c++) {
for (this.modules[c] = new Array(this.moduleCount), d = 0; d < this.moduleCount; d++) {
this.modules[c][d] = null
}
}
this.setupPositionProbePattern(0, 0), this.setupPositionProbePattern(this.moduleCount - 7, 0), this.setupPositionProbePattern(0, this.moduleCount - 7), this.setupPositionAdjustPattern(), this.setupTimingPattern(), this.setupTypeInfo(a, b), this.typeNumber >= 7 && this.setupTypeNumber(a), null == this.dataCache && (this.dataCache = QRCode.createData(this.typeNumber, this.errorCorrectLevel, this.dataList)), this.mapData(this.dataCache, b)
}, setupPositionProbePattern: function (a, b) {
var c, d;
for (c = -1; 7 >= c; c++) {
if (!(-1 >= a + c || this.moduleCount <= a + c)) {
for (d = -1; 7 >= d; d++) {
-1 >= b + d || this.moduleCount <= b + d || (this.modules[a + c][b + d] = c >= 0 && 6 >= c && (0 == d || 6 == d) || d >= 0 && 6 >= d && (0 == c || 6 == c) || c >= 2 && 4 >= c && d >= 2 && 4 >= d ? !0 : !1)
}
}
}
}, getBestMaskPattern: function () {
var c, d, a = 0, b = 0;
for (c = 0; 8 > c; c++) {
this.makeImpl(!0, c), d = QRUtil.getLostPoint(this), (0 == c || a > d) && (a = d, b = c)
}
return b
}, createMovieClip: function (a, b, c) {
var f, g, h, i, j, d = a.createEmptyMovieClip(b, c), e = 1;
for (this.make(), f = 0; f < this.modules.length; f++) {
for (g = f * e, h = 0; h < this.modules[f].length; h++) {
i = h * e, j = this.modules[f][h], j && (d.beginFill(0, 100), d.moveTo(i, g), d.lineTo(i + e, g), d.lineTo(i + e, g + e), d.lineTo(i, g + e), d.endFill())
}
}
return d
}, setupTimingPattern: function () {
var a, b;
for (a = 8; a < this.moduleCount - 8; a++) {
null == this.modules[a][6] && (this.modules[a][6] = 0 == a % 2)
}
for (b = 8; b < this.moduleCount - 8; b++) {
null == this.modules[6][b] && (this.modules[6][b] = 0 == b % 2)
}
}, setupPositionAdjustPattern: function () {
var b, c, d, e, f, g, a = QRUtil.getPatternPosition(this.typeNumber);
for (b = 0; b < a.length; b++) {
for (c = 0; c < a.length; c++) {
if (d = a[b], e = a[c], null == this.modules[d][e]) {
for (f = -2; 2 >= f; f++) {
for (g = -2; 2 >= g; g++) {
this.modules[d + f][e + g] = -2 == f || 2 == f || -2 == g || 2 == g || 0 == f && 0 == g ? !0 : !1
}
}
}
}
}
}, setupTypeNumber: function (a) {
var c, d, b = QRUtil.getBCHTypeNumber(this.typeNumber);
for (c = 0; 18 > c; c++) {
d = !a && 1 == (1 & b >> c), this.modules[Math.floor(c / 3)][c % 3 + this.moduleCount - 8 - 3] = d
}
for (c = 0; 18 > c; c++) {
d = !a && 1 == (1 & b >> c), this.modules[c % 3 + this.moduleCount - 8 - 3][Math.floor(c / 3)] = d
}
}, setupTypeInfo: function (a, b) {
var e, f, c = this.errorCorrectLevel << 3 | b, d = QRUtil.getBCHTypeInfo(c);
for (e = 0; 15 > e; e++) {
f = !a && 1 == (1 & d >> e), 6 > e ? this.modules[e][8] = f : 8 > e ? this.modules[e + 1][8] = f : this.modules[this.moduleCount - 15 + e][8] = f
}
for (e = 0; 15 > e; e++) {
f = !a && 1 == (1 & d >> e), 8 > e ? this.modules[8][this.moduleCount - e - 1] = f : 9 > e ? this.modules[8][15 - e - 1 + 1] = f : this.modules[8][15 - e - 1] = f
}
this.modules[this.moduleCount - 8][8] = !a
}, mapData: function (a, b) {
var g, h, i, j, c = -1, d = this.moduleCount - 1, e = 7, f = 0;
for (g = this.moduleCount - 1; g > 0; g -= 2) {
for (6 == g && g--; ;) {
for (h = 0; 2 > h; h++) {
null == this.modules[d][g - h] && (i = !1, f < a.length && (i = 1 == (1 & a[f] >>> e)), j = QRUtil.getMask(b, d, g - h), j && (i = !i), this.modules[d][g - h] = i, e--, -1 == e && (f++, e = 7))
}
if (d += c, 0 > d || this.moduleCount <= d) {
d -= c, c = -c;
break
}
}
}
}
}, QRCode.PAD0 = 236, QRCode.PAD1 = 17, QRCode.createData = function (a, b, c) {
var f, g, h, d = QRRSBlock.getRSBlocks(a, b), e = new QRBitBuffer();
for (f = 0; f < c.length; f++) {
g = c[f], e.put(g.mode, 4), e.put(g.getLength(), QRUtil.getLengthInBits(g.mode, a)), g.write(e)
}
for (h = 0, f = 0; f < d.length; f++) {
h += d[f].dataCount
}
if (e.getLengthInBits() > 8 * h) {
throw new Error("code length overflow. (" + e.getLengthInBits() + ">" + 8 * h + ")")
}
for (e.getLengthInBits() + 4 <= 8 * h && e.put(0, 4); 0 != e.getLengthInBits() % 8;) {
e.putBit(!1)
}
for (; ;) {
if (e.getLengthInBits() >= 8 * h) {
break
}
if (e.put(QRCode.PAD0, 8), e.getLengthInBits() >= 8 * h) {
break
}
e.put(QRCode.PAD1, 8)
}
return QRCode.createBytes(e, d)
}, QRCode.createBytes = function (a, b) {
var h, i, j, k, l, m, n, o, p, q, r, c = 0, d = 0, e = 0, f = new Array(b.length), g = new Array(b.length);
for (h = 0; h < b.length; h++) {
for (i = b[h].dataCount, j = b[h].totalCount - i, d = Math.max(d, i), e = Math.max(e, j), f[h] = new Array(i), k = 0; k < f[h].length; k++) {
f[h][k] = 255 & a.buffer[k + c]
}
for (c += i, l = QRUtil.getErrorCorrectPolynomial(j), m = new QRPolynomial(f[h], l.getLength() - 1), n = m.mod(l), g[h] = new Array(l.getLength() - 1), k = 0; k < g[h].length; k++) {
o = k + n.getLength() - g[h].length, g[h][k] = o >= 0 ? n.get(o) : 0
}
}
for (p = 0, k = 0; k < b.length; k++) {
p += b[k].totalCount
}
for (q = new Array(p), r = 0, k = 0; d > k; k++) {
for (h = 0; h < b.length; h++) {
k < f[h].length && (q[r++] = f[h][k])
}
}
for (k = 0; e > k; k++) {
for (h = 0; h < b.length; h++) {
k < g[h].length && (q[r++] = g[h][k])
}
}
return q
}, QRMode = {MODE_NUMBER: 1, MODE_ALPHA_NUM: 2, MODE_8BIT_BYTE: 4, MODE_KANJI: 8}, QRErrorCorrectLevel = {
L: 1,
M: 0,
Q: 3,
H: 2
}, QRMaskPattern = {
PATTERN000: 0,
PATTERN001: 1,
PATTERN010: 2,
PATTERN011: 3,
PATTERN100: 4,
PATTERN101: 5,
PATTERN110: 6,
PATTERN111: 7
}, QRUtil = {
PATTERN_POSITION_TABLE: [[], [6, 18], [6, 22], [6, 26], [6, 30], [6, 34], [6, 22, 38], [6, 24, 42], [6, 26, 46], [6, 28, 50], [6, 30, 54], [6, 32, 58], [6, 34, 62], [6, 26, 46, 66], [6, 26, 48, 70], [6, 26, 50, 74], [6, 30, 54, 78], [6, 30, 56, 82], [6, 30, 58, 86], [6, 34, 62, 90], [6, 28, 50, 72, 94], [6, 26, 50, 74, 98], [6, 30, 54, 78, 102], [6, 28, 54, 80, 106], [6, 32, 58, 84, 110], [6, 30, 58, 86, 114], [6, 34, 62, 90, 118], [6, 26, 50, 74, 98, 122], [6, 30, 54, 78, 102, 126], [6, 26, 52, 78, 104, 130], [6, 30, 56, 82, 108, 134], [6, 34, 60, 86, 112, 138], [6, 30, 58, 86, 114, 142], [6, 34, 62, 90, 118, 146], [6, 30, 54, 78, 102, 126, 150], [6, 24, 50, 76, 102, 128, 154], [6, 28, 54, 80, 106, 132, 158], [6, 32, 58, 84, 110, 136, 162], [6, 26, 54, 82, 110, 138, 166], [6, 30, 58, 86, 114, 142, 170]],
G15: 1335,
G18: 7973,
G15_MASK: 21522,
getBCHTypeInfo: function (a) {
for (var b = a << 10; QRUtil.getBCHDigit(b) - QRUtil.getBCHDigit(QRUtil.G15) >= 0;) {
b ^= QRUtil.G15 << QRUtil.getBCHDigit(b) - QRUtil.getBCHDigit(QRUtil.G15)
}
return (a << 10 | b) ^ QRUtil.G15_MASK
},
getBCHTypeNumber: function (a) {
for (var b = a << 12; QRUtil.getBCHDigit(b) - QRUtil.getBCHDigit(QRUtil.G18) >= 0;) {
b ^= QRUtil.G18 << QRUtil.getBCHDigit(b) - QRUtil.getBCHDigit(QRUtil.G18)
}
return a << 12 | b
},
getBCHDigit: function (a) {
for (var b = 0; 0 != a;) {
b++, a >>>= 1
}
return b
},
getPatternPosition: function (a) {
return QRUtil.PATTERN_POSITION_TABLE[a - 1]
},
getMask: function (a, b, c) {
switch (a) {
case QRMaskPattern.PATTERN000:
return 0 == (b + c) % 2;
case QRMaskPattern.PATTERN001:
return 0 == b % 2;
case QRMaskPattern.PATTERN010:
return 0 == c % 3;
case QRMaskPattern.PATTERN011:
return 0 == (b + c) % 3;
case QRMaskPattern.PATTERN100:
return 0 == (Math.floor(b / 2) + Math.floor(c / 3)) % 2;
case QRMaskPattern.PATTERN101:
return 0 == b * c % 2 + b * c % 3;
case QRMaskPattern.PATTERN110:
return 0 == (b * c % 2 + b * c % 3) % 2;
case QRMaskPattern.PATTERN111:
return 0 == (b * c % 3 + (b + c) % 2) % 2;
default:
throw new Error("bad maskPattern:" + a)
}
},
getErrorCorrectPolynomial: function (a) {
var c, b = new QRPolynomial([1], 0);
for (c = 0; a > c; c++) {
b = b.multiply(new QRPolynomial([1, QRMath.gexp(c)], 0))
}
return b
},
getLengthInBits: function (a, b) {
if (b >= 1 && 10 > b) {
switch (a) {
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:" + a)
}
} else {
if (27 > b) {
switch (a) {
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:" + a)
}
} else {
if (!(41 > b)) {
throw new Error("type:" + b)
}
switch (a) {
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:" + a)
}
}
}
},
getLostPoint: function (a) {
var d, e, f, g, h, i, j, k, l, b = a.getModuleCount(), c = 0;
for (d = 0; b > d; d++) {
for (e = 0; b > e; e++) {
for (f = 0, g = a.isDark(d, e), h = -1; 1 >= h; h++) {
if (!(0 > d + h || d + h >= b)) {
for (i = -1; 1 >= i; i++) {
0 > e + i || e + i >= b || (0 != h || 0 != i) && g == a.isDark(d + h, e + i) && f++
}
}
}
f > 5 && (c += 3 + f - 5)
}
}
for (d = 0; b - 1 > d; d++) {
for (e = 0; b - 1 > e; e++) {
j = 0, a.isDark(d, e) && j++, a.isDark(d + 1, e) && j++, a.isDark(d, e + 1) && j++, a.isDark(d + 1, e + 1) && j++, (0 == j || 4 == j) && (c += 3)
}
}
for (d = 0; b > d; d++) {
for (e = 0; b - 6 > e; e++) {
a.isDark(d, e) && !a.isDark(d, e + 1) && a.isDark(d, e + 2) && a.isDark(d, e + 3) && a.isDark(d, e + 4) && !a.isDark(d, e + 5) && a.isDark(d, e + 6) && (c += 40)
}
}
for (e = 0; b > e; e++) {
for (d = 0; b - 6 > d; d++) {
a.isDark(d, e) && !a.isDark(d + 1, e) && a.isDark(d + 2, e) && a.isDark(d + 3, e) && a.isDark(d + 4, e) && !a.isDark(d + 5, e) && a.isDark(d + 6, e) && (c += 40)
}
}
for (k = 0, e = 0; b > e; e++) {
for (d = 0; b > d; d++) {
a.isDark(d, e) && k++
}
}
return l = Math.abs(100 * k / b / b - 50) / 5, c += 10 * l
}
}, QRMath = {
glog: function (a) {
if (1 > a) {
throw new Error("glog(" + a + ")")
}
return QRMath.LOG_TABLE[a]
}, gexp: function (a) {
for (; 0 > a;) {
a += 255
}
for (; a >= 256;) {
a -= 255
}
return QRMath.EXP_TABLE[a]
}, EXP_TABLE: new Array(256), LOG_TABLE: new Array(256)
}, i = 0; 8 > i; i++) {
QRMath.EXP_TABLE[i] = 1 << i
}
for (i = 8; 256 > i; 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 (i = 0; 255 > i; i++) {
QRMath.LOG_TABLE[QRMath.EXP_TABLE[i]] = i
}
QRPolynomial.prototype = {
get: function (a) {
return this.num[a]
}, getLength: function () {
return this.num.length
}, multiply: function (a) {
var c, d, b = new Array(this.getLength() + a.getLength() - 1);
for (c = 0; c < this.getLength(); c++) {
for (d = 0; d < a.getLength(); d++) {
b[c + d] ^= QRMath.gexp(QRMath.glog(this.get(c)) + QRMath.glog(a.get(d)))
}
}
return new QRPolynomial(b, 0)
}, mod: function (a) {
var b, c, d;
if (this.getLength() - a.getLength() < 0) {
return this
}
for (b = QRMath.glog(this.get(0)) - QRMath.glog(a.get(0)), c = new Array(this.getLength()), d = 0; d < this.getLength(); d++) {
c[d] = this.get(d)
}
for (d = 0; d < a.getLength(); d++) {
c[d] ^= QRMath.gexp(QRMath.glog(a.get(d)) + b)
}
return new QRPolynomial(c, 0).mod(a)
}
}, 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 (a, b) {
var d, e, f, g, h, i, j, c = QRRSBlock.getRsBlockTable(a, b);
if (void 0 == c) {
throw new Error("bad rs block @ typeNumber:" + a + "/errorCorrectLevel:" + b)
}
for (d = c.length / 3, e = new Array(), f = 0; d > f; f++) {
for (g = c[3 * f + 0], h = c[3 * f + 1], i = c[3 * f + 2], j = 0; g > j; j++) {
e.push(new QRRSBlock(h, i))
}
}
return e
}, QRRSBlock.getRsBlockTable = function (a, b) {
switch (b) {
case QRErrorCorrectLevel.L:
return QRRSBlock.RS_BLOCK_TABLE[4 * (a - 1) + 0];
case QRErrorCorrectLevel.M:
return QRRSBlock.RS_BLOCK_TABLE[4 * (a - 1) + 1];
case QRErrorCorrectLevel.Q:
return QRRSBlock.RS_BLOCK_TABLE[4 * (a - 1) + 2];
case QRErrorCorrectLevel.H:
return QRRSBlock.RS_BLOCK_TABLE[4 * (a - 1) + 3];
default:
return void 0
}
}, QRBitBuffer.prototype = {
get: function (a) {
var b = Math.floor(a / 8);
return 1 == (1 & this.buffer[b] >>> 7 - a % 8)
}, put: function (a, b) {
for (var c = 0; b > c; c++) {
this.putBit(1 == (1 & a >>> b - c - 1))
}
}, getLengthInBits: function () {
return this.length
}, putBit: function (a) {
var b = Math.floor(this.length / 8);
this.buffer.length <= b && this.buffer.push(0), a && (this.buffer[b] |= 128 >>> this.length % 8), this.length++
}
};6.调用函数代码,已支持LOGO上传
$("#qrcode").qrcode({
render: "canvas", //设置渲染方式，有table和canvas，使用canvas方式渲染性能相对来说比较好
text: "我最帅..", //扫描二维码后显示的内容,可以直接填一个网址，扫描二维码后自动跳向该链接
width: "196", //二维码的宽度
height: "196", //二维码的高度
background: "#ffffff", //二维码的后景色
foreground: "#000000", //二维码的前景色
src: 'images/logo2.png' //二维码中间的图片
});7.修改后的二维码显示
8.注意事项
(1)若中间LOGO过大,过小或出现拉伸情况,请自行修改原码部分
............
width: 256,
height: 256,
//这里是LOGO的高度和宽度
imgWidth: b.width / 4.7,
imgHeight: b.height / 4.7,
............(2)中间的LOGO图片不宜过大,容错过大会造成二维码识别失效
(3)LOGO图片插入时,是以覆盖的形式加入,原图如果是正方形的图,并没有效果图中的圆润角,显示效果会很难看,所以要求平面作图时,最好是四角圆润且有空白位置,像以下几种(四角未处理)
9.总结
到此这篇关于js二维码生成插件jquery.qrcode.js如何自定义LOGO的文章就介绍到这了,更多相关jquery.qrcode.js自定义LOGO内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！
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