Merge branch 'develop'

pull/2/head v0.6.0
Lars Jung 12 years ago
commit 57a96b31f8

@ -10,6 +10,17 @@ Uses [QR Code Generator](http://www.d-project.com/qrcode/index.html) (MIT). Kudo
## Changelog
### v0.6.0 - *2013-07-28*
* adds version range
* adds quiet zone
* adds optional label or image
* adds rounded corners
* adds image output
* adds demo
### v0.5.0 - *2013-07-23*
* adds option to set error correction level

@ -34,6 +34,11 @@ var pkg = require('./package.json'),
]
},
mapperSrc = function (blob) {
return blob.source.replace(src, build);
},
mapperRoot = function (blob) {
return blob.source.replace(root, build);
@ -104,10 +109,15 @@ module.exports = function (make) {
var scriptName = pkg.name;
$(src + '/demo/*')
.handlebars(replacements)
.write($.OVERWRITE, mapperSrc);
$(src + ': ' + scriptName + '.js')
.includify()
.handlebars(replacements)
.write($.OVERWRITE, path.join(build, scriptName + '-' + pkg.version + '.js'))
.write($.OVERWRITE, path.join(build, 'demo', scriptName + '.js'))
.uglifyjs()
.write($.OVERWRITE, path.join(build, scriptName + '-' + pkg.version + '.min.js'));

@ -1,5 +1,5 @@
{
"name": "jquery.qrcode",
"displayName": "jQuery.qrcode",
"version": "0.5.0"
"version": "0.6.0"
}

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@ -0,0 +1,294 @@
/*
html5slider - a JS implementation of <input type=range> for Firefox 16 and up
https://github.com/fryn/html5slider
Copyright (c) 2010-2013 Frank Yan, <http://frankyan.com>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
(function() {
// test for native support
var test = document.createElement('input');
try {
test.type = 'range';
if (test.type == 'range')
return;
} catch (e) {
return;
}
// test for required property support
test.style.background = 'linear-gradient(red, red)';
if (!test.style.backgroundImage || !('MozAppearance' in test.style))
return;
var scale;
var isMac = navigator.platform == 'MacIntel';
var thumb = {
radius: isMac ? 9 : 6,
width: isMac ? 22 : 12,
height: isMac ? 16 : 20
};
var track = 'linear-gradient(transparent ' + (isMac ?
'6px, #999 6px, #999 7px, #ccc 8px, #bbb 9px, #bbb 10px, transparent 10px' :
'9px, #999 9px, #bbb 10px, #fff 11px, transparent 11px') +
', transparent)';
var styles = {
'min-width': thumb.width + 'px',
'min-height': thumb.height + 'px',
'max-height': thumb.height + 'px',
padding: '0 0 ' + (isMac ? '2px' : '1px'),
border: 0,
'border-radius': 0,
cursor: 'default',
'text-indent': '-999999px' // -moz-user-select: none; breaks mouse capture
};
var options = {
attributes: true,
attributeFilter: ['min', 'max', 'step', 'value']
};
var onInput = document.createEvent('HTMLEvents');
onInput.initEvent('input', true, false);
var onChange = document.createEvent('HTMLEvents');
onChange.initEvent('change', true, false);
if (document.readyState == 'loading')
document.addEventListener('DOMContentLoaded', initialize, true);
else
initialize();
addEventListener('pageshow', recreate, true);
function initialize() {
// create initial sliders
recreate();
// create sliders on-the-fly
new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
if (mutation.addedNodes)
Array.forEach(mutation.addedNodes, function(node) {
if (!(node instanceof Element))
;
else if (node.childElementCount)
Array.forEach(node.querySelectorAll('input[type=range]'), check);
else if (node.mozMatchesSelector('input[type=range]'))
check(node);
});
});
}).observe(document, { childList: true, subtree: true });
}
function recreate() {
Array.forEach(document.querySelectorAll('input[type=range]'), check);
}
function check(input) {
if (input.type != 'range')
transform(input);
}
function transform(slider) {
var isValueSet, areAttrsSet, isUI, isClick, prevValue, rawValue, prevX;
var min, max, step, range, value = slider.value;
// lazily create shared slider affordance
if (!scale) {
scale = document.body.appendChild(document.createElement('hr'));
style(scale, {
'-moz-appearance': isMac ? 'scale-horizontal' : 'scalethumb-horizontal',
display: 'block',
visibility: 'visible',
opacity: 1,
position: 'fixed',
top: '-999999px'
});
document.mozSetImageElement('__sliderthumb__', scale);
}
// reimplement value and type properties
var getValue = function() { return '' + value; };
var setValue = function setValue(val) {
value = '' + val;
isValueSet = true;
draw();
delete slider.value;
slider.value = value;
slider.__defineGetter__('value', getValue);
slider.__defineSetter__('value', setValue);
};
slider.__defineGetter__('value', getValue);
slider.__defineSetter__('value', setValue);
Object.defineProperty(slider, 'type', {
get: function() { return 'range'; }
});
// sync properties with attributes
['min', 'max', 'step'].forEach(function(name) {
if (slider.hasAttribute(name))
areAttrsSet = true;
Object.defineProperty(slider, name, {
get: function() {
return this.hasAttribute(name) ? this.getAttribute(name) : '';
},
set: function(val) {
val === null ?
this.removeAttribute(name) :
this.setAttribute(name, val);
}
});
});
// initialize slider
slider.readOnly = true;
style(slider, styles);
update();
new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
if (mutation.attributeName != 'value') {
update();
areAttrsSet = true;
}
// note that value attribute only sets initial value
else if (!isValueSet) {
value = slider.getAttribute('value');
draw();
}
});
}).observe(slider, options);
slider.addEventListener('mousedown', onDragStart, true);
slider.addEventListener('keydown', onKeyDown, true);
slider.addEventListener('focus', onFocus, true);
slider.addEventListener('blur', onBlur, true);
function onDragStart(e) {
isClick = true;
setTimeout(function() { isClick = false; }, 0);
if (e.button || !range)
return;
var width = parseFloat(getComputedStyle(this).width);
var multiplier = (width - thumb.width) / range;
if (!multiplier)
return;
// distance between click and center of thumb
var dev = e.clientX - this.getBoundingClientRect().left - thumb.width / 2 -
(value - min) * multiplier;
// if click was not on thumb, move thumb to click location
if (Math.abs(dev) > thumb.radius) {
isUI = true;
this.value -= -dev / multiplier;
}
rawValue = value;
prevX = e.clientX;
this.addEventListener('mousemove', onDrag, true);
this.addEventListener('mouseup', onDragEnd, true);
}
function onDrag(e) {
var width = parseFloat(getComputedStyle(this).width);
var multiplier = (width - thumb.width) / range;
if (!multiplier)
return;
rawValue += (e.clientX - prevX) / multiplier;
prevX = e.clientX;
isUI = true;
this.value = rawValue;
}
function onDragEnd() {
this.removeEventListener('mousemove', onDrag, true);
this.removeEventListener('mouseup', onDragEnd, true);
slider.dispatchEvent(onInput);
slider.dispatchEvent(onChange);
}
function onKeyDown(e) {
if (e.keyCode > 36 && e.keyCode < 41) { // 37-40: left, up, right, down
onFocus.call(this);
isUI = true;
this.value = value + (e.keyCode == 38 || e.keyCode == 39 ? step : -step);
}
}
function onFocus() {
if (!isClick)
this.style.boxShadow = !isMac ? '0 0 0 2px #fb0' :
'inset 0 0 20px rgba(0,127,255,.1), 0 0 1px rgba(0,127,255,.4)';
}
function onBlur() {
this.style.boxShadow = '';
}
// determines whether value is valid number in attribute form
function isAttrNum(value) {
return !isNaN(value) && +value == parseFloat(value);
}
// validates min, max, and step attributes and redraws
function update() {
min = isAttrNum(slider.min) ? +slider.min : 0;
max = isAttrNum(slider.max) ? +slider.max : 100;
if (max < min)
max = min > 100 ? min : 100;
step = isAttrNum(slider.step) && slider.step > 0 ? +slider.step : 1;
range = max - min;
draw(true);
}
// recalculates value property
function calc() {
if (!isValueSet && !areAttrsSet)
value = slider.getAttribute('value');
if (!isAttrNum(value))
value = (min + max) / 2;;
// snap to step intervals (WebKit sometimes does not - bug?)
value = Math.round((value - min) / step) * step + min;
if (value < min)
value = min;
else if (value > max)
value = min + ~~(range / step) * step;
}
// renders slider using CSS background ;)
function draw(attrsModified) {
calc();
var wasUI = isUI;
isUI = false;
if (wasUI && value != prevValue)
slider.dispatchEvent(onInput);
if (!attrsModified && value == prevValue)
return;
prevValue = value;
var position = range ? (value - min) / range * 100 : 0;
var bg = '-moz-element(#__sliderthumb__) ' + position + '% no-repeat, ';
style(slider, { background: bg + track });
}
}
function style(element, styles) {
for (var prop in styles)
element.style.setProperty(prop, styles[prop], 'important');
}
})();

@ -0,0 +1,90 @@
<!DOCTYPE html>
<html class="no-js no-browser" lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>{{pkg.displayName}} {{pkg.version}} · Demo</title>
<meta name="description" content="demo for the jQuery plug in jQuery.qrcode (http://larsjung.de/qrcode/)">
<meta name="author" content="Lars Jung">
<meta name="viewport" content="width=device-width">
<link rel="author" href="http://plus.google.com/106403733398479106535">
<link rel="shortcut icon" href="icon-16.ico">
<link rel="apple-touch-icon" href="icon-48.png" type="image/png">
<link href='http://fonts.googleapis.com/css?family=Ubuntu:400,700' rel='stylesheet'>
<link href='styles.css' rel='stylesheet'>
<script src="jquery-1.10.2.js"></script>
<script src="jquery.qrcode.js"></script>
<script src="ff-range.js"></script>
<script src="scripts.js"></script>
</head>
<body>
<div id="container"></div>
<div class="control left">
<a id="banner" href="http://larsjung.de/qrcode/">{{pkg.displayName}} {{pkg.version}}</a>
<hr/>
<label for="render">RENDER MODE</label>
<select id="render">
<option value="canvas" selected="selected">Canvas</option>
<option value="image">Image</option>
<option value="div">DIV</option>
</select>
<hr/>
<label for="size">SIZE:</label>
<input id="size" type="range" value="400" min="100" max="1000" step="50" />
<label for="color">COLOR</label>
<input id="color" type="color" value="#333333" />
<label for="bg-color">BACKGROUND COLOR</label>
<input id="bg-color" type="color" value="#ffffff" />
<label for="text">CONTENT</label>
<textarea id="text">http://larsjung.de/qrcode/</textarea>
<hr/>
<label for="minversion">MINVERSION:</label>
<input id="minversion" type="range" value="6" min="1" max="10" step="1" />
<label for="eclevel">ERROR CORRECTION LEVEL</label>
<select id="eclevel">
<option value="L">L - Low (7%)</option>
<option value="M">M - Medium (15%)</option>
<option value="Q">Q - Quartile (25%)</option>
<option value="H" selected="selected">H - High (30%)</option>
</select>
<label for="quiet">QUIET ZONE:</label>
<input id="quiet" type="range" value="1" min="0" max="4" step="1" />
<label for="radius">CORNER RADIUS (not in Opera):</label>
<input id="radius" type="range" value="50" min="0" max="50" step="10" />
<!-- <hr/> -->
<!-- <a id="download" download="qrcode.png">DOWNLOAD</a> -->
</div>
<div class="control right">
<label for="mode">MODE</label>
<select id="mode">
<option value="0">0 - Normal</option>
<option value="1">1 - Label-Strip</option>
<option value="2" selected="selected">2 - Label-Box</option>
<option value="3">3 - Image-Strip</option>
<option value="4">4 - Image-Box</option>
</select>
<hr/>
<label for="label">LABEL</label>
<input id="label" type="text" value="jQuery.qrcode" />
<label for="fontsize">LABEL SIZE:</label>
<input id="fontsize" type="range" value="11" min="1" max="20" step="1" />
<label for="font">FONT NAME</label>
<input id="font" type="text" value="Ubuntu" />
<label for="fontcolor">FONT COLOR:</label>
<input id="fontcolor" type="color" value="#ff9818" />
<hr/>
<label for="image">IMAGE</label>
<input id="image" type="file" />
<label for="imagesize">IMAGE SIZE:</label>
<input id="imagesize" type="range" value="13" min="1" max="30" step="1" />
</div>
<img id="img-buffer" src="dummy.png" />
</body>
</html>

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@ -0,0 +1,93 @@
var isOpera = Object.prototype.toString.call(window.opera) == '[object Opera]',
guiValuePairs = [
["size", "px"],
["minversion", ""],
["quiet", "modules"],
["radius", "%"],
["fontsize", "%"],
["imagesize", "%"]
],
updateGui = function () {
for (var idx in guiValuePairs) {
var pair = guiValuePairs[idx],
$label = $('label[for="' + pair[0] + '"]');
$label.text($label.text().replace(/:.*/, ': ' + $('#' + pair[0]).val() + pair[1]));
}
},
updateQrCode = function () {
var options = {
render: $("#render").val(),
ecLevel: $("#eclevel").val(),
minVersion: parseInt($("#minversion").val(), 10),
color: $("#color").val(),
bgColor: $("#bg-color").val(),
text: $("#text").val(),
size: parseInt($("#size").val(), 10),
radius: parseInt($("#radius").val(), 10) * 0.01,
quiet: parseInt($("#quiet").val(), 10),
mode: parseInt($("#mode").val(), 10),
label: $("#label").val(),
labelsize: parseInt($("#fontsize").val(), 10) * 0.01,
fontname: $("#font").val(),
fontcolor: $("#fontcolor").val(),
image: $("#img-buffer")[0],
imagesize: parseInt($("#imagesize").val(), 10) * 0.01
};
$("#container").empty().qrcode(options);
},
update = function () {
updateGui();
updateQrCode();
},
onImageInput = function () {
var input = $("#image")[0];
if (input.files && input.files[0]) {
var reader = new FileReader();
reader.onload = function (event) {
$("#img-buffer").attr("src", event.target.result);
$("#mode").val("4");
setTimeout(update, 250);
};
reader.readAsDataURL(input.files[0]);
}
},
download = function (event) {
var data = $("#container canvas")[0].toDataURL('image/png');
$("#download").attr("href", data);
};
$(function () {
if (isOpera) {
$('html').addClass('opera');
$('#radius').prop('disabled', true);
}
$("#download").on("click", download);
$("#image").on('change', onImageInput);
$("input, textarea, select").on("input change", update);
$(window).load(update);
update();
});

@ -0,0 +1,115 @@
body {
font-family: Ubuntu;
margin: 0;
padding: 0;
text-align: center;
background: repeat url("back.png");
}
#banner {
display: block;
text-decoration: none;
color: rgb(29, 119, 194);
padding: 12px 0 0;
text-align: center;
}
#banner:hover {
color: #333;
}
#container {
display: inline-block;
margin: 20px auto;
box-shadow: 0 0 16px rgba(0,0,0,0.5);
}
#container > * {
display: block;
}
.control {
position: absolute;
background-color: #f8f8f8;
top: 0;
width: 190px;
box-shadow: 0 0 32px rgba(0,0,0,0.5);
overflow: hidden;
text-align: left;
}
.control.left {
left: 0;
}
.control.right {
right: 0;
}
hr {
margin: 12px 0 0;
padding: 0;
border: none;
height: 1px;
background-color: rgba(0,0,0,0.1);
}
label {
font-size: 10px;
color: #bbb;
padding: 12px 4px 0 4px;
}
html.opera label[for="radius"] {
color: #e55;
}
#download {
text-align: center;
font-weight: bold;
text-decoration: none;
display: block;
color: #555;
background-color: #ddd;
margin: 4px;
padding: 8px 0;
border: 1px solid #ddd;
cursor: pointer;
}
input, textarea, select {
font-family: Ubuntu;
display: block;
background-color: #fff;
margin: 2px;
padding: 0 2px;
border: 1px solid #ddd;
width: 180px;
height: 22px;
}
#text {
height: 48px;
}
#img-buffer {
display: none;
}
input[type="range"] {
-webkit-appearance: none;
/* height: 8px;
margin-top: 4px;
margin-bottom: 4px;
*/ cursor: pointer;
}
input::-webkit-slider-thumb {
-webkit-appearance: none;
width: 16px;
height: 16px;
border-radius: 3px;
background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0, #aaa), color-stop(1, #aaa) );
}

@ -6,77 +6,287 @@
(function ($) {
'use strict';
// Check if canvas is available in the browser (as Modernizr does)
var canvasAvailable = (function () {
var elem = document.createElement('canvas');
return !!(elem.getContext && elem.getContext('2d'));
}()),
// Wrapper for the original QR code generator.
createQr = function (typeNumber, correctionLevel, text) {
var QRCode = function (text, level, version, quiet) {
// `qrcode` is the single public function that will be defined by the `QR Code Generator`
// at the end of the file.
var qr = qrcode(typeNumber, correctionLevel);
var qr = qrcode(version, level);
qr.addData(text);
qr.make();
return qr;
quiet = quiet || 0;
var qrModuleCount = qr.getModuleCount(),
quietModuleCount = qr.getModuleCount() + 2*quiet,
isDark = function (row, col) {
row -= quiet;
col -= quiet;
if (row < 0 || row >= qrModuleCount || col < 0 || col >= qrModuleCount) {
return false;
}
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;
},
// Returns a minimal QR code for the given text. Returns `null` if `text`
// is to long to be encoded. At the moment it should work with up to ~2900 characters.
createBestQr = function (text, correctionLevel) {
// 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]',
for (var type = 2; type <= 40; type += 1) {
// 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 createQr(type, correctionLevel, text);
return new QRCode(text, level, version, quiet);
} catch (err) {}
}
},
drawBackgroundLabel = function (qr, context, settings) {
var font = "bold " + (settings.labelsize * settings.size) + "px " + settings.fontname,
ctx = $('<canvas/>')[0].getContext("2d");
return null;
ctx.font = font;
var w = ctx.measureText(settings.label).width,
sh = settings.labelsize,
sw = w / settings.size,
sl = (1 - sw)/2,
st = (1 - sh)/2,
sr = sl + sw,
sb = st + sh,
pad = 0.01;
if (settings.mode === 1) {
// Strip
qr.addBlank(0, st - pad, size, sb + pad);
} else {
// Box
qr.addBlank(sl - pad, st - pad, sr + pad, sb + pad);
}
context.fillStyle = settings.fontcolor;
context.textAlign = "center";
context.font = font;
context.fillText($("#label").val(), 0.5 * settings.size, 0.5 * settings.size + 0.3 * settings.labelsize * settings.size);
},
// Draws QR code to the given `canvas` and returns it.
drawOnCanvas = function (canvas, settings) {
drawBackgroundImage = function (qr, context, settings) {
var size = settings.size,
w = settings.image.naturalWidth || 1,
h = settings.image.naturalHeight || 1,
sh = settings.imagesize,
sw = sh * w / h,
sl = (1 - sw)/2,
st = (1 - sh)/2,
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);
}
// some shortcuts to improve compression
var settings_text = settings.text,
settings_ecl = settings.ecl,
settings_left = settings.left,
settings_top = settings.top,
settings_width = settings.width,
settings_height = settings.height,
settings_color = settings.color,
settings_bgColor = settings.bgColor,
context.drawImage(settings.image, sl*size, st*size, sw*size, sh*size);
},
qr = createBestQr(settings_text, settings_ecl),
$canvas = $(canvas),
ctx = $canvas[0].getContext('2d');
drawBackground = function (qr, context, settings) {
if (settings_bgColor) {
ctx.fillStyle = settings_bgColor;
ctx.fillRect(settings_left, settings_top, settings_width, settings_height);
}
if (qr) {
var moduleCount = qr.getModuleCount(),
moduleWidth = settings_width / moduleCount,
moduleHeight = settings_height / moduleCount,
row, col;
ctx.beginPath();
for (row = 0; row < moduleCount; row += 1) {
for (col = 0; col < moduleCount; col += 1) {
if (qr.isDark(row, col)) {
ctx.rect(settings_left + col * moduleWidth, settings_top + row * moduleHeight, moduleWidth, moduleHeight);
}
}
if (settings.bgColor) {
context.fillStyle = settings.bgColor;
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) {
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);
}
},
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);
}
ctx.fillStyle = settings_color;
ctx.fill();
}
context.fillStyle = settings.color;
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;
},
@ -84,68 +294,71 @@
// Returns a `canvas` element representing the QR code for the given settings.
createCanvas = function (settings) {
var $canvas = $('<canvas/>').attr('width', settings.width).attr('height', settings.height);
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
var settings_text = settings.text,
settings_ecl = settings.ecl,
settings_width = settings.width,
settings_height = settings.height,
settings_color = settings.color,
var settings_size = settings.size,
settings_bgColor = settings.bgColor,
math_floor = Math.floor,
qr = createBestQr(settings_text, settings_ecl),
$div = $('<div/>').css({
position: 'relative',
left: 0,
top: 0,
padding: 0,
margin: 0,
width: settings_width,
height: settings_height
});
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.color
},
$div = $('<div/>').data('qrcode', qr).css(containerCSS);
if (settings_bgColor) {
$div.css('background-color', settings_bgColor);
}
if (qr) {
var moduleCount = qr.getModuleCount(),
moduleWidth = math_floor(settings_width / moduleCount),
moduleHeight = math_floor(settings_height / moduleCount),
offsetLeft = math_floor(0.5 * (settings_width - moduleWidth * moduleCount)),
offsetTop = math_floor(0.5 * (settings_height - moduleHeight * moduleCount)),
row, col;
for (row = 0; row < moduleCount; row += 1) {
for (col = 0; col < moduleCount; col += 1) {
if (qr.isDark(row, col)) {
$('<div/>')
.css({
left: offsetLeft + col * moduleWidth,
top: offsetTop + row * moduleHeight
})
.appendTo($div);
}
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);
}
}
$div.children()
.css({
position: 'absolute',
padding: 0,
margin: 0,
width: moduleWidth,
height: moduleHeight,
'background-color': settings_color
});
}
return $div;
@ -153,7 +366,13 @@
createHTML = function (settings) {
return canvasAvailable && settings.render === 'canvas' ? createCanvas(settings) : createDiv(settings);
if (canvasAvailable && settings.render === 'canvas') {
return createCanvas(settings);
} else if (canvasAvailable && settings.render === 'image') {
return createImage(settings);
}
return createDiv(settings);
},
// Plugin
@ -163,19 +382,22 @@
// ----------------
defaults = {
// render method: `'canvas'` or `'div'`
// render method: `'canvas'`, `'image'` or `'div'`
render: 'canvas',
// version range somewhere in 1 .. 40
minVersion: 1,
maxVersion: 40,
// error correction level: `'L'`, `'M'`, `'Q'` or `'H'`
ecl: 'L',
ecLevel: 'L',
// left and top in pixel if drawn onto existing canvas
// offset in pixel if drawn onto existing canvas
left: 0,
top: 0,
// width and height in pixel
width: 256,
height: 256,
// size in pixel
size: 200,
// code color
color: '#000',
@ -183,8 +405,30 @@
// background color, `null` for transparent background
bgColor: null,
// the encoded text
text: 'no text'
// content
text: 'no text',
// corner radius relative to module width: 0.0 .. 0.5
radius: 0,
// quiet zone in modules
quiet: 0,
// modes
// 0: normal
// 1: label strip
// 2: label box
// 3: image strip
// 4: image box
mode: 0,
label: 'no label',
labelsize: 0.1,
fontname: 'sans',
fontcolor: '#000',
image: null,
imagesize: 0.1
};
// Register the plugin

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