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pull/18/head v0.11.0
Lars Jung 11 years ago
parent 672549f4ac
commit e8f252f6e1
6 changed files with 749 additions and 748 deletions
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5
.editorconfig
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@ -17,6 +17,11 @@ indent_style = space
indent_size = 2 indent_size = 2
[bower.json]
indent_style = space
indent_size = 2
[.travis.yml] [.travis.yml]
indent_style = space indent_style = space
indent_size = 2 indent_size = 2

14
bower.json
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@ -1,6 +1,6 @@
{ {
"name": "jquery-qrcode", "name": "jquery-qrcode",
"version": "0.10.1", "version": "0.11.0",
"description": "generate QR codes dynamically", "description": "generate QR codes dynamically",
"homepage": "http://larsjung.de/jquery-qrcode/", "homepage": "http://larsjung.de/jquery-qrcode/",
"authors": [ "authors": [
@ -13,14 +13,8 @@
"url": "https://github.com/lrsjng/jquery-qrcode.git" "url": "https://github.com/lrsjng/jquery-qrcode.git"
}, },
"ignore": [ "ignore": [
"**/.*", "*",
"bower_components", "!dist/*",
"build", "!*.md"
"local",
"mkrfile.js",
"node_modules",
"src",
"test",
"tests"
] ]
} }

727
dist/jquery.qrcode.js vendored
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@ -1,399 +1,400 @@
/* jQuery.qrcode 0.10.1 - http://larsjung.de/jquery-qrcode/ - uses //github.com/kazuhikoarase/qrcode-generator (MIT) */ /* jQuery.qrcode 0.11.0 - http://larsjung.de/jquery-qrcode/ - uses //github.com/kazuhikoarase/qrcode-generator (MIT) */
(function () { (function () {
'use strict'; 'use strict';
var $ = jQuery; var $ = jQuery;
// Wrapper for the original QR code generator. // Wrapper for the original QR code generator.
var QRCode = function (text, level, version, quiet) { function QRCode(text, level, version, quiet) {
// `qrcode` is the single public function that will be defined by the `QR Code Generator` // `qrcode` is the single public function that will be defined by the `QR Code Generator`
// at the end of the file. // at the end of the file.
var qr = qrcode(version, level); var qr = qrcode(version, level);
qr.addData(text); qr.addData(text);
qr.make(); qr.make();
quiet = quiet || 0; quiet = quiet || 0;
var qrModuleCount = qr.getModuleCount(), var qrModuleCount = qr.getModuleCount();
quietModuleCount = qr.getModuleCount() + 2*quiet, var quietModuleCount = qr.getModuleCount() + 2*quiet;
isDark = function (row, col) {
row -= quiet; function isDark(row, col) {
col -= quiet;
if (row < 0 || row >= qrModuleCount || col < 0 || col >= qrModuleCount) { row -= quiet;
return false; col -= quiet;
}
return qr.isDark(row, col);
},
addBlank = function (l, t, r, b) {
var prevIsDark = this.isDark,
moduleSize = 1 / quietModuleCount;
this.isDark = function (row, col) {
var ml = col * moduleSize,
mt = row * moduleSize,
mr = ml + moduleSize,
mb = mt + moduleSize;
return prevIsDark(row, col) && (l > mr || ml > r || t > mb || mt > b);
};
};
this.text = text;
this.level = level;
this.version = version;
this.moduleCount = quietModuleCount;
this.isDark = isDark;
this.addBlank = addBlank;
},
// Check if canvas is available in the browser (as Modernizr does)
canvasAvailable = (function () {
var elem = document.createElement('canvas');
return !!(elem.getContext && elem.getContext('2d'));
}()),
arcToAvailable = Object.prototype.toString.call(window.opera) !== '[object Opera]',
// Returns a minimal QR code for the given text starting with version `minVersion`.
// Returns `null` if `text` is too long to be encoded in `maxVersion`.
createQRCode = function (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 new QRCode(text, level, version, quiet);
} catch (err) {}
}
},
drawBackgroundLabel = function (qr, context, settings) {
var size = settings.size,
font = "bold " + (settings.mSize * size) + "px " + settings.fontname,
ctx = $('<canvas/>')[0].getContext("2d");
ctx.font = font;
var w = ctx.measureText(settings.label).width,
sh = settings.mSize,
sw = w / size,
sl = (1 - sw) * settings.mPosX,
st = (1 - sh) * settings.mPosY,
sr = sl + sw,
sb = st + sh,
pad = 0.01;
if (settings.mode === 1) {
// Strip
qr.addBlank(0, st - pad, size, sb + pad);
} else {
// Box
qr.addBlank(sl - pad, st - pad, sr + pad, sb + pad);
}
context.fillStyle = settings.fontcolor;
context.font = font;
context.fillText(settings.label, sl*size, st*size + 0.75 * settings.mSize * size);
},
drawBackgroundImage = function (qr, context, settings) {
var size = settings.size,
w = settings.image.naturalWidth || 1,
h = settings.image.naturalHeight || 1,
sh = settings.mSize,
sw = sh * w / h,
sl = (1 - sw) * settings.mPosX,
st = (1 - sh) * settings.mPosY,
sr = sl + sw,
sb = st + sh,
pad = 0.01;
if (settings.mode === 3) {
// Strip
qr.addBlank(0, st - pad, size, sb + pad);
} else {
// Box
qr.addBlank(sl - pad, st - pad, sr + pad, sb + pad);
}
context.drawImage(settings.image, sl*size, st*size, sw*size, sh*size);
},
drawBackground = function (qr, context, settings) {
if ($(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);
}
},
drawModuleDefault = function (qr, context, settings, left, top, width, row, col) {
if (qr.isDark(row, col)) {
context.rect(left, top, width, width);
}
},
drawModuleRoundedDark = function (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) { if (row < 0 || row >= qrModuleCount || col < 0 || col >= qrModuleCount) {
ctx.lineTo(r, b - rad); return false;
ctx.arcTo(r, b, l, b, rad);
} else {
ctx.lineTo(r, b);
} }
if (sw) { return qr.isDark(row, col);
ctx.lineTo(l + rad, b); }
ctx.arcTo(l, b, l, t, rad);
} else {
ctx.lineTo(l, b);
}
if (nw) { var addBlank = function (l, t, r, b) {
ctx.lineTo(l, t + rad);
ctx.arcTo(l, t, r, t, rad);
} else {
ctx.lineTo(l, t);
}
},
drawModuleRoundendLight = function (ctx, l, t, r, b, rad, nw, ne, se, sw) { var prevIsDark = this.isDark;
var moduleSize = 1 / quietModuleCount;
if (nw) { this.isDark = function (row, col) {
ctx.moveTo(l + rad, t);
ctx.lineTo(l, t);
ctx.lineTo(l, t + rad);
ctx.arcTo(l, t, l + rad, t, rad);
}
if (ne) { var ml = col * moduleSize;
ctx.moveTo(r - rad, t); var mt = row * moduleSize;
ctx.lineTo(r, t); var mr = ml + moduleSize;
ctx.lineTo(r, t + rad); var mb = mt + moduleSize;
ctx.arcTo(r, t, r - rad, t, rad);
}
if (se) { return prevIsDark(row, col) && (l > mr || ml > r || t > mb || mt > b);
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);
}
},
drawModuleRounded = function (qr, context, settings, left, top, width, row, col) {
var isDark = qr.isDark,
right = left + width,
bottom = top + width,
radius = settings.radius * width,
rowT = row - 1,
rowB = row + 1,
colL = col - 1,
colR = col + 1,
center = isDark(row, col),
northwest = isDark(rowT, colL),
north = isDark(rowT, col),
northeast = isDark(rowT, colR),
east = isDark(row, colR),
southeast = isDark(rowB, colR),
south = isDark(rowB, col),
southwest = isDark(rowB, colL),
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);
}
},
drawModules = function (qr, context, settings) {
var moduleCount = qr.moduleCount,
moduleSize = settings.size / moduleCount,
fn = drawModuleDefault,
row, col;
if (arcToAvailable && settings.radius > 0 && settings.radius <= 0.5) {
fn = drawModuleRounded;
}
context.beginPath(); this.text = text;
for (row = 0; row < moduleCount; row += 1) { this.level = level;
for (col = 0; col < moduleCount; col += 1) { this.version = version;
this.moduleCount = quietModuleCount;
this.isDark = isDark;
this.addBlank = addBlank;
}
var l = settings.left + col * moduleSize, // Check if canvas is available in the browser (as Modernizr does)
t = settings.top + row * moduleSize, var hasCanvas = (function () {
w = moduleSize;
fn(qr, context, settings, l, t, w, row, col); var elem = document.createElement('canvas');
} return !!(elem.getContext && elem.getContext('2d'));
} }());
if ($(settings.fill).is('img')) { var hasArcTo = Object.prototype.toString.call(window.opera) !== '[object Opera]';
context.strokeStyle = 'rgba(0,0,0,0.5)';
context.lineWidth = 2; // Returns a minimal QR code for the given text starting with version `minVersion`.
context.stroke(); // Returns `undefined` if `text` is too long to be encoded in `maxVersion`.
var prev = context.globalCompositeOperation; function createQRCode(text, level, minVersion, maxVersion, quiet) {
context.globalCompositeOperation = "destination-out";
context.fill(); minVersion = Math.max(1, minVersion || 1);
context.globalCompositeOperation = prev; maxVersion = Math.min(40, maxVersion || 40);
for (var version = minVersion; version <= maxVersion; version += 1) {
context.clip(); try {
context.drawImage(settings.fill, 0, 0, settings.size, settings.size); return new QRCode(text, level, version, quiet);
context.restore(); } catch (err) {}
} else { }
context.fillStyle = settings.fill; }
context.fill();
} function drawBackgroundLabel(qr, context, settings) {
},
var size = settings.size;
// Draws QR code to the given `canvas` and returns it. var font = "bold " + (settings.mSize * size) + "px " + settings.fontname;
drawOnCanvas = function (canvas, settings) { var ctx = $('<canvas/>')[0].getContext("2d");
var qr = createQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet); ctx.font = font;
if (!qr) {
return null; var w = ctx.measureText(settings.label).width;
var sh = settings.mSize;
var sw = w / size;
var sl = (1 - sw) * settings.mPosX;
var st = (1 - sh) * settings.mPosY;
var sr = sl + sw;
var sb = st + sh;
var pad = 0.01;
if (settings.mode === 1) {
// Strip
qr.addBlank(0, st - pad, size, sb + pad);
} else {
// Box
qr.addBlank(sl - pad, st - pad, sr + pad, sb + pad);
}
context.fillStyle = settings.fontcolor;
context.font = font;
context.fillText(settings.label, sl*size, st*size + 0.75 * settings.mSize * size);
}
function drawBackgroundImage(qr, context, settings) {
var size = settings.size;
var w = settings.image.naturalWidth || 1;
var h = settings.image.naturalHeight || 1;
var sh = settings.mSize;
var sw = sh * w / h;
var sl = (1 - sw) * settings.mPosX;
var st = (1 - sh) * settings.mPosY;
var sr = sl + sw;
var sb = st + sh;
var pad = 0.01;
if (settings.mode === 3) {
// Strip
qr.addBlank(0, st - pad, size, sb + pad);
} else {
// Box
qr.addBlank(sl - pad, st - pad, sr + pad, sb + pad);
}
context.drawImage(settings.image, sl*size, st*size, sw*size, sh*size);
}
function drawBackground(qr, context, settings) {
if ($(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, col;
if (hasArcTo && 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,
t = settings.top + row * moduleSize,
w = moduleSize;
fn(qr, context, settings, l, t, w, row, col);
} }
}
if ($(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 = createQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
if (!qr) {
return null;
}
var $canvas = $(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 = $('<canvas/>').attr('width', settings.size).attr('height', settings.size);
return drawOnCanvas($canvas, settings);
}
// Returns an `image` element representing the QR code for the given settings.
function createImage(settings) {
return $('<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 = createQRCode(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, 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 $canvas = $(canvas).data('qrcode', qr), var $div = $('<div/>').data('qrcode', qr).css(containerCSS);
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.
createCanvas = function (settings) {
var $canvas = $('<canvas/>').attr('width', settings.size).attr('height', settings.size);
return drawOnCanvas($canvas, settings);
},
// Returns an `image` element representing the QR code for the given settings.
createImage = function (settings) {
return $('<img/>').attr('src', createCanvas(settings)[0].toDataURL('image/png'));
},
// Returns a `div` element representing the QR code for the given settings.
createDiv = function (settings) {
var qr = createQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
if (!qr) {
return null;
}
// some shortcuts to improve compression if (settings_bgColor) {
var settings_size = settings.size, $div.css('background-color', settings_bgColor);
settings_bgColor = settings.background, }
math_floor = Math.floor,
moduleCount = qr.moduleCount,
moduleSize = math_floor(settings_size / moduleCount),
offset = math_floor(0.5 * (settings_size - moduleSize * moduleCount)),
row, col,
containerCSS = {
position: 'relative',
left: 0,
top: 0,
padding: 0,
margin: 0,
width: settings_size,
height: settings_size
},
darkCSS = {
position: 'absolute',
padding: 0,
margin: 0,
width: moduleSize,
height: moduleSize,
'background-color': settings.fill
},
$div = $('<div/>').data('qrcode', qr).css(containerCSS);
if (settings_bgColor) {
$div.css('background-color', settings_bgColor);
}
for (row = 0; row < moduleCount; row += 1) { for (row = 0; row < moduleCount; row += 1) {
for (col = 0; col < moduleCount; col += 1) { for (col = 0; col < moduleCount; col += 1) {
if (qr.isDark(row, col)) { if (qr.isDark(row, col)) {
$('<div/>') $('<div/>')
.css(darkCSS) .css(darkCSS)
.css({ .css({
left: offset + col * moduleSize, left: offset + col * moduleSize,
top: offset + row * moduleSize top: offset + row * moduleSize
}) })
.appendTo($div); .appendTo($div);
}
} }
} }
}
return $div; return $div;
}, }
createHTML = function (settings) { function createHTML(settings) {
if (canvasAvailable && settings.render === 'canvas') { if (hasCanvas && settings.render === 'canvas') {
return createCanvas(settings); return createCanvas(settings);
} else if (canvasAvailable && settings.render === 'image') { } else if (hasCanvas && settings.render === 'image') {
return createImage(settings); return createImage(settings);
} }
return createDiv(settings); return createDiv(settings);
}, }
// Plugin // Plugin
// ====== // ======
// Default settings // Default settings
// ---------------- // ----------------
defaults = { var defaults = {
// render method: `'canvas'`, `'image'` or `'div'` // render method: `'canvas'`, `'image'` or `'div'`
render: 'canvas', render: 'canvas',

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dist/jquery.qrcode.min.js vendored
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16
package.json
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@ -1,7 +1,7 @@
{ {
"name": "jquery-qrcode", "name": "jquery-qrcode",
"displayName": "jQuery.qrcode", "displayName": "jQuery.qrcode",
"version": "0.10.1", "version": "0.11.0",
"description": "generate QR codes dynamically", "description": "generate QR codes dynamically",
"homepage": "http://larsjung.de/jquery-qrcode/", "homepage": "http://larsjung.de/jquery-qrcode/",
"bugs": "https://github.com/lrsjng/jquery-qrcode/issues", "bugs": "https://github.com/lrsjng/jquery-qrcode/issues",
@ -12,12 +12,12 @@
"url": "https://github.com/lrsjng/jquery-qrcode.git" "url": "https://github.com/lrsjng/jquery-qrcode.git"
}, },
"devDependencies": { "devDependencies": {
"fquery": "~0.12.17", "fquery": "~0.16.2",
"fquery-handlebars": "~0.1.0", "fquery-handlebars": "~0.2.0",
"fquery-includeit": "~0.1.1", "fquery-includeit": "~0.2.0",
"fquery-jshint": "~0.1.0", "fquery-jshint": "~0.2.0",
"fquery-jszip": "~0.1.0", "fquery-jszip": "~0.4.0",
"fquery-uglifyjs": "~0.1.3", "fquery-uglifyjs": "~0.2.1",
"mkr": "~0.3.0" "mkr": "~0.6.1"
} }
} }

731
src/jquery.qrcode.js
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@ -3,396 +3,397 @@
var $ = jQuery; var $ = jQuery;
// Wrapper for the original QR code generator. // Wrapper for the original QR code generator.
var QRCode = function (text, level, version, quiet) { function QRCode(text, level, version, quiet) {
// `qrcode` is the single public function that will be defined by the `QR Code Generator` // `qrcode` is the single public function that will be defined by the `QR Code Generator`
// at the end of the file. // at the end of the file.
var qr = qrcode(version, level); var qr = qrcode(version, level);
qr.addData(text); qr.addData(text);
qr.make(); qr.make();
quiet = quiet || 0; quiet = quiet || 0;
var qrModuleCount = qr.getModuleCount(), var qrModuleCount = qr.getModuleCount();
quietModuleCount = qr.getModuleCount() + 2*quiet, var quietModuleCount = qr.getModuleCount() + 2*quiet;
isDark = function (row, col) {
row -= quiet; function isDark(row, col) {
col -= quiet;
if (row < 0 || row >= qrModuleCount || col < 0 || col >= qrModuleCount) { row -= quiet;
return false; col -= quiet;
}
return qr.isDark(row, col); if (row < 0 || row >= qrModuleCount || col < 0 || col >= qrModuleCount) {
}, return false;
addBlank = function (l, t, r, b) {
var prevIsDark = this.isDark,
moduleSize = 1 / quietModuleCount;
this.isDark = function (row, col) {
var ml = col * moduleSize,
mt = row * moduleSize,
mr = ml + moduleSize,
mb = mt + moduleSize;
return prevIsDark(row, col) && (l > mr || ml > r || t > mb || mt > b);
};
};
this.text = text;
this.level = level;
this.version = version;
this.moduleCount = quietModuleCount;
this.isDark = isDark;
this.addBlank = addBlank;
},
// Check if canvas is available in the browser (as Modernizr does)
canvasAvailable = (function () {
var elem = document.createElement('canvas');
return !!(elem.getContext && elem.getContext('2d'));
}()),
arcToAvailable = Object.prototype.toString.call(window.opera) !== '[object Opera]',
// Returns a minimal QR code for the given text starting with version `minVersion`.
// Returns `null` if `text` is too long to be encoded in `maxVersion`.
createQRCode = function (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 new QRCode(text, level, version, quiet);
} catch (err) {}
}
},
drawBackgroundLabel = function (qr, context, settings) {
var size = settings.size,
font = "bold " + (settings.mSize * size) + "px " + settings.fontname,
ctx = $('<canvas/>')[0].getContext("2d");
ctx.font = font;
var w = ctx.measureText(settings.label).width,
sh = settings.mSize,
sw = w / size,
sl = (1 - sw) * settings.mPosX,
st = (1 - sh) * settings.mPosY,
sr = sl + sw,
sb = st + sh,
pad = 0.01;
if (settings.mode === 1) {
// Strip
qr.addBlank(0, st - pad, size, sb + pad);
} else {
// Box
qr.addBlank(sl - pad, st - pad, sr + pad, sb + pad);
}
context.fillStyle = settings.fontcolor;
context.font = font;
context.fillText(settings.label, sl*size, st*size + 0.75 * settings.mSize * size);
},
drawBackgroundImage = function (qr, context, settings) {
var size = settings.size,
w = settings.image.naturalWidth || 1,
h = settings.image.naturalHeight || 1,
sh = settings.mSize,
sw = sh * w / h,
sl = (1 - sw) * settings.mPosX,
st = (1 - sh) * settings.mPosY,
sr = sl + sw,
sb = st + sh,
pad = 0.01;
if (settings.mode === 3) {
// Strip
qr.addBlank(0, st - pad, size, sb + pad);
} else {
// Box
qr.addBlank(sl - pad, st - pad, sr + pad, sb + pad);
}
context.drawImage(settings.image, sl*size, st*size, sw*size, sh*size);
},
drawBackground = function (qr, context, settings) {
if ($(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);
}
},
drawModuleDefault = function (qr, context, settings, left, top, width, row, col) {
if (qr.isDark(row, col)) {
context.rect(left, top, width, width);
} }
},
drawModuleRoundedDark = function (ctx, l, t, r, b, rad, nw, ne, se, sw) { return qr.isDark(row, col);
}
if (nw) { var addBlank = function (l, t, r, b) {
ctx.moveTo(l + rad, t);
} else {
ctx.moveTo(l, t);
}
if (ne) { var prevIsDark = this.isDark;
ctx.lineTo(r - rad, t); var moduleSize = 1 / quietModuleCount;
ctx.arcTo(r, t, r, b, rad);
} else {
ctx.lineTo(r, t);
}
if (se) { this.isDark = function (row, col) {
ctx.lineTo(r, b - rad);
ctx.arcTo(r, b, l, b, rad);
} else {
ctx.lineTo(r, b);
}
if (sw) { var ml = col * moduleSize;
ctx.lineTo(l + rad, b); var mt = row * moduleSize;
ctx.arcTo(l, b, l, t, rad); var mr = ml + moduleSize;
} else { var mb = mt + moduleSize;
ctx.lineTo(l, b);
}
if (nw) { return prevIsDark(row, col) && (l > mr || ml > r || t > mb || mt > b);
ctx.lineTo(l, t + rad); };
ctx.arcTo(l, t, r, t, rad); };
} else {
ctx.lineTo(l, t);
}
},
drawModuleRoundendLight = function (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);
}
},
drawModuleRounded = function (qr, context, settings, left, top, width, row, col) {
var isDark = qr.isDark,
right = left + width,
bottom = top + width,
radius = settings.radius * width,
rowT = row - 1,
rowB = row + 1,
colL = col - 1,
colR = col + 1,
center = isDark(row, col),
northwest = isDark(rowT, colL),
north = isDark(rowT, col),
northeast = isDark(rowT, colR),
east = isDark(row, colR),
southeast = isDark(rowB, colR),
south = isDark(rowB, col),
southwest = isDark(rowB, colL),
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);
}
},
drawModules = function (qr, context, settings) {
var moduleCount = qr.moduleCount,
moduleSize = settings.size / moduleCount,
fn = drawModuleDefault,
row, col;
if (arcToAvailable && 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,
t = settings.top + row * moduleSize,
w = moduleSize;
fn(qr, context, settings, l, t, w, row, col);
}
}
if ($(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.
drawOnCanvas = function (canvas, settings) {
var qr = createQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
if (!qr) {
return null;
}
var $canvas = $(canvas).data('qrcode', qr),
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.
createCanvas = function (settings) {
var $canvas = $('<canvas/>').attr('width', settings.size).attr('height', settings.size);
return drawOnCanvas($canvas, settings);
},
// Returns an `image` element representing the QR code for the given settings.
createImage = function (settings) {
return $('<img/>').attr('src', createCanvas(settings)[0].toDataURL('image/png'));
},
// Returns a `div` element representing the QR code for the given settings. this.text = text;
createDiv = function (settings) { this.level = level;
this.version = version;
this.moduleCount = quietModuleCount;
this.isDark = isDark;
this.addBlank = addBlank;
}
var qr = createQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet); // Check if canvas is available in the browser (as Modernizr does)
if (!qr) { var hasCanvas = (function () {
return null;
}
// some shortcuts to improve compression var elem = document.createElement('canvas');
var settings_size = settings.size, return !!(elem.getContext && elem.getContext('2d'));
settings_bgColor = settings.background, }());
math_floor = Math.floor, var hasArcTo = Object.prototype.toString.call(window.opera) !== '[object Opera]';
moduleCount = qr.moduleCount, // Returns a minimal QR code for the given text starting with version `minVersion`.
moduleSize = math_floor(settings_size / moduleCount), // Returns `undefined` if `text` is too long to be encoded in `maxVersion`.
offset = math_floor(0.5 * (settings_size - moduleSize * moduleCount)), function createQRCode(text, level, minVersion, maxVersion, quiet) {
row, col, minVersion = Math.max(1, minVersion || 1);
maxVersion = Math.min(40, maxVersion || 40);
containerCSS = { for (var version = minVersion; version <= maxVersion; version += 1) {
position: 'relative', try {
left: 0, return new QRCode(text, level, version, quiet);
top: 0, } catch (err) {}
padding: 0, }
margin: 0, }
width: settings_size,
height: settings_size function drawBackgroundLabel(qr, context, settings) {
},
darkCSS = { var size = settings.size;
position: 'absolute', var font = "bold " + (settings.mSize * size) + "px " + settings.fontname;
padding: 0, var ctx = $('<canvas/>')[0].getContext("2d");
margin: 0,
width: moduleSize, ctx.font = font;
height: moduleSize,
'background-color': settings.fill var w = ctx.measureText(settings.label).width;
}, var sh = settings.mSize;
var sw = w / size;
$div = $('<div/>').data('qrcode', qr).css(containerCSS); var sl = (1 - sw) * settings.mPosX;
var st = (1 - sh) * settings.mPosY;
if (settings_bgColor) { var sr = sl + sw;
$div.css('background-color', settings_bgColor); var sb = st + sh;
var pad = 0.01;
if (settings.mode === 1) {
// Strip
qr.addBlank(0, st - pad, size, sb + pad);
} else {
// Box
qr.addBlank(sl - pad, st - pad, sr + pad, sb + pad);
}
context.fillStyle = settings.fontcolor;
context.font = font;
context.fillText(settings.label, sl*size, st*size + 0.75 * settings.mSize * size);
}
function drawBackgroundImage(qr, context, settings) {
var size = settings.size;
var w = settings.image.naturalWidth || 1;
var h = settings.image.naturalHeight || 1;
var sh = settings.mSize;
var sw = sh * w / h;
var sl = (1 - sw) * settings.mPosX;
var st = (1 - sh) * settings.mPosY;
var sr = sl + sw;
var sb = st + sh;
var pad = 0.01;
if (settings.mode === 3) {
// Strip
qr.addBlank(0, st - pad, size, sb + pad);
} else {
// Box
qr.addBlank(sl - pad, st - pad, sr + pad, sb + pad);
}
context.drawImage(settings.image, sl*size, st*size, sw*size, sh*size);
}
function drawBackground(qr, context, settings) {
if ($(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, col;
if (hasArcTo && 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,
t = settings.top + row * moduleSize,
w = moduleSize;
fn(qr, context, settings, l, t, w, row, col);
} }
}
for (row = 0; row < moduleCount; row += 1) { if ($(settings.fill).is('img')) {
for (col = 0; col < moduleCount; col += 1) { context.strokeStyle = 'rgba(0,0,0,0.5)';
if (qr.isDark(row, col)) { context.lineWidth = 2;
$('<div/>') context.stroke();
.css(darkCSS) var prev = context.globalCompositeOperation;
.css({ context.globalCompositeOperation = "destination-out";
left: offset + col * moduleSize, context.fill();
top: offset + row * moduleSize context.globalCompositeOperation = prev;
})
.appendTo($div); 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 = createQRCode(settings.text, settings.ecLevel, settings.minVersion, settings.maxVersion, settings.quiet);
if (!qr) {
return null;
}
var $canvas = $(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 = $('<canvas/>').attr('width', settings.size).attr('height', settings.size);
return drawOnCanvas($canvas, settings);
}
// Returns an `image` element representing the QR code for the given settings.
function createImage(settings) {
return $('<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 = createQRCode(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, 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 = $('<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)) {
$('<div/>')
.css(darkCSS)
.css({
left: offset + col * moduleSize,
top: offset + row * moduleSize
})
.appendTo($div);
} }
} }
}
return $div; return $div;
}, }
createHTML = function (settings) { function createHTML(settings) {
if (canvasAvailable && settings.render === 'canvas') { if (hasCanvas && settings.render === 'canvas') {
return createCanvas(settings); return createCanvas(settings);
} else if (canvasAvailable && settings.render === 'image') { } else if (hasCanvas && settings.render === 'image') {
return createImage(settings); return createImage(settings);
} }
return createDiv(settings); return createDiv(settings);
}, }
// Plugin // Plugin
// ====== // ======
// Default settings // Default settings
// ---------------- // ----------------
defaults = { var defaults = {
// render method: `'canvas'`, `'image'` or `'div'` // render method: `'canvas'`, `'image'` or `'div'`
render: 'canvas', render: 'canvas',

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