mirror of
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Update jQuery.qrcode.
This commit is contained in:
Lars Jung
parent
80d0952d1f
commit
b7c180355f
@ -8,6 +8,7 @@
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* outsources themes to [h5ai-themes](https://github.com/lrsjng/h5ai-themes)
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* replaces `markdown` with [`marked`](https://github.com/chjj/marked)
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* updates `modulejs` to 0.4.5
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* updates `jQuery.qrcode` to 0.8.0
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## v0.25.2 - *2014-07-01*
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@ -1,207 +1,474 @@
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/*! jQuery.qrcode 0.4 - //larsjung.de/qrcode - MIT License */
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// Uses [QR Code Generator](http://www.d-project.com/qrcode/index.html) (MIT), appended to the end of this file.
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// Kudos to [jquery.qrcode.js](http://github.com/jeromeetienne/jquery-qrcode) (MIT).
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(function ($) {
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'use strict';
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// Check if canvas is available in the browser (as Modernizr does)
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var canvasAvailable = (function () {
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var elem = document.createElement('canvas');
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return !!(elem.getContext && elem.getContext('2d'));
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}()),
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// Wrapper for the original QR code generator.
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createQr = function (typeNumber, correctLevel, text) {
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// `qrcode` is the single public function that will be defined by the `QR Code Generator`
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// at the end of the file.
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var qr = qrcode(typeNumber, correctLevel);
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qr.addData(text);
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qr.make();
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return qr;
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},
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// Returns a minimal QR code for the given text. Returns `null` if `text`
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// is to long to be encoded. At the moment it should work with up to 271 characters.
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createBestQr = function (text) {
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for (var type = 2; type <= 40; type += 1) {
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try {
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return createQr(type, 'L', text);
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} catch (err) {}
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}
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return null;
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},
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// Draws QR code to the given `canvas` and returns it.
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drawOnCanvas = function (canvas, settings) {
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// some shortcuts to improve compression
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var settings_text = settings.text,
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settings_left = settings.left,
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settings_top = settings.top,
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settings_width = settings.width,
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settings_height = settings.height,
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settings_color = settings.color,
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settings_bgColor = settings.bgColor,
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qr = createBestQr(settings_text),
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$canvas = $(canvas),
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ctx = $canvas[0].getContext('2d');
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if (settings_bgColor) {
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ctx.fillStyle = settings_bgColor;
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ctx.fillRect(settings_left, settings_top, settings_width, settings_height);
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}
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if (qr) {
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var moduleCount = qr.getModuleCount(),
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moduleWidth = settings_width / moduleCount,
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moduleHeight = settings_height / moduleCount,
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row, col;
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ctx.beginPath();
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for (row = 0; row < moduleCount; row += 1) {
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for (col = 0; col < moduleCount; col += 1) {
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if (qr.isDark(row, col)) {
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ctx.rect(settings_left + col * moduleWidth, settings_top + row * moduleHeight, moduleWidth, moduleHeight);
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}
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}
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}
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ctx.fillStyle = settings_color;
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ctx.fill();
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}
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return $canvas;
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},
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// Returns a `canvas` element representing the QR code for the given settings.
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createCanvas = function (settings) {
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var $canvas = $('<canvas/>').attr('width', settings.width).attr('height', settings.height);
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return drawOnCanvas($canvas, settings);
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},
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// Returns a `div` element representing the QR code for the given settings.
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createDiv = function (settings) {
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// some shortcuts to improve compression
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var settings_text = settings.text,
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settings_width = settings.width,
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settings_height = settings.height,
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settings_color = settings.color,
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settings_bgColor = settings.bgColor,
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math_floor = Math.floor,
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qr = createBestQr(settings_text),
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$div = $('<div/>').css({
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position: 'relative',
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left: 0,
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top: 0,
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padding: 0,
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margin: 0,
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width: settings_width,
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height: settings_height
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});
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if (settings_bgColor) {
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$div.css('background-color', settings_bgColor);
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}
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if (qr) {
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var moduleCount = qr.getModuleCount(),
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moduleWidth = math_floor(settings_width / moduleCount),
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moduleHeight = math_floor(settings_height / moduleCount),
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offsetLeft = math_floor(0.5 * (settings_width - moduleWidth * moduleCount)),
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offsetTop = math_floor(0.5 * (settings_height - moduleHeight * moduleCount)),
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row, col;
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for (row = 0; row < moduleCount; row += 1) {
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for (col = 0; col < moduleCount; col += 1) {
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if (qr.isDark(row, col)) {
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$('<div/>')
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.css({
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left: offsetLeft + col * moduleWidth,
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top: offsetTop + row * moduleHeight
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})
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.appendTo($div);
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}
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}
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}
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$div.children()
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.css({
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position: 'absolute',
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padding: 0,
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margin: 0,
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width: moduleWidth,
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height: moduleHeight,
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'background-color': settings_color
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});
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}
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return $div;
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},
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createHTML = function (settings) {
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return canvasAvailable && settings.render === 'canvas' ? createCanvas(settings) : createDiv(settings);
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},
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// Plugin
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// ======
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// Default settings
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// ----------------
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defaults = {
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// render method: `'canvas'` or `'div'`
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render: 'canvas',
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// left and top in pixel if drawn onto existing canvas
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left: 0,
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top: 0,
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// width and height in pixel
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width: 256,
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height: 256,
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// code color
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color: '#000',
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// background color, `null` for transparent background
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bgColor: null,
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// the encoded text
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text: 'no text'
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};
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// Register the plugin
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// -------------------
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$.fn.qrcode = function(options) {
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var settings = $.extend({}, defaults, options);
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return this.each(function () {
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if (this.nodeName.toLowerCase() === 'canvas') {
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drawOnCanvas(this, settings);
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} else {
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$(this).append(createHTML(settings));
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}
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});
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};
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// jQuery.qrcode plug in code ends here
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// QR Code Generator
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// =================
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/*! jQuery.qrcode 0.8.0 - //larsjung.de/qrcode - MIT License */
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// Uses [QR Code Generator](http://www.d-project.com/qrcode/index.html) (MIT), appended to the end of this file.
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// Kudos to [jquery.qrcode.js](http://github.com/jeromeetienne/jquery-qrcode) (MIT).
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(function ($) {
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'use strict';
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// Wrapper for the original QR code generator.
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var QRCode = function (text, level, version, quiet) {
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// `qrcode` is the single public function that will be defined by the `QR Code Generator`
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// at the end of the file.
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var qr = qrcode(version, level);
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qr.addData(text);
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qr.make();
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quiet = quiet || 0;
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var qrModuleCount = qr.getModuleCount(),
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quietModuleCount = qr.getModuleCount() + 2*quiet,
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isDark = function (row, col) {
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row -= quiet;
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col -= quiet;
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if (row < 0 || row >= qrModuleCount || col < 0 || col >= qrModuleCount) {
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return false;
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}
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return qr.isDark(row, col);
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},
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addBlank = function (l, t, r, b) {
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var prevIsDark = this.isDark,
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moduleSize = 1 / quietModuleCount;
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this.isDark = function (row, col) {
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var ml = col * moduleSize,
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mt = row * moduleSize,
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mr = ml + moduleSize,
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mb = mt + moduleSize;
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return prevIsDark(row, col) && (l > mr || ml > r || t > mb || mt > b);
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};
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};
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this.text = text;
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this.level = level;
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this.version = version;
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this.moduleCount = quietModuleCount;
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this.isDark = isDark;
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this.addBlank = addBlank;
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},
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// Check if canvas is available in the browser (as Modernizr does)
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canvasAvailable = (function () {
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var elem = document.createElement('canvas');
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return !!(elem.getContext && elem.getContext('2d'));
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}()),
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arcToAvailable = Object.prototype.toString.call(window.opera) !== '[object Opera]',
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// Returns a minimal QR code for the given text starting with version `minVersion`.
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// Returns `null` if `text` is too long to be encoded in `maxVersion`.
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createQRCode = function (text, level, minVersion, maxVersion, quiet) {
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minVersion = Math.max(1, minVersion || 1);
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maxVersion = Math.min(40, maxVersion || 40);
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for (var version = minVersion; version <= maxVersion; version += 1) {
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try {
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return new QRCode(text, level, version, quiet);
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} catch (err) {}
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}
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},
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drawBackgroundLabel = function (qr, context, settings) {
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var size = settings.size,
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font = "bold " + (settings.mSize * size) + "px " + settings.fontname,
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ctx = $('<canvas/>')[0].getContext("2d");
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ctx.font = font;
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var w = ctx.measureText(settings.label).width,
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sh = settings.mSize,
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sw = w / size,
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sl = (1 - sw) * settings.mPosX,
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st = (1 - sh) * settings.mPosY,
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sr = sl + sw,
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sb = st + sh,
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pad = 0.01;
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if (settings.mode === 1) {
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// Strip
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qr.addBlank(0, st - pad, size, sb + pad);
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} else {
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// Box
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qr.addBlank(sl - pad, st - pad, sr + pad, sb + pad);
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}
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context.fillStyle = settings.fontcolor;
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context.font = font;
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context.fillText(settings.label, sl*size, st*size + 0.75 * settings.mSize * size);
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},
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drawBackgroundImage = function (qr, context, settings) {
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var size = settings.size,
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w = settings.image.naturalWidth || 1,
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h = settings.image.naturalHeight || 1,
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sh = settings.mSize,
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sw = sh * w / h,
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sl = (1 - sw) * settings.mPosX,
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st = (1 - sh) * settings.mPosY,
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sr = sl + sw,
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sb = st + sh,
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pad = 0.01;
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if (settings.mode === 3) {
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// Strip
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qr.addBlank(0, st - pad, size, sb + pad);
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} else {
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// Box
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qr.addBlank(sl - pad, st - pad, sr + pad, sb + pad);
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}
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context.drawImage(settings.image, sl*size, st*size, sw*size, sh*size);
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},
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drawBackground = function (qr, context, settings) {
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if ($(settings.background).is('img')) {
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context.drawImage(settings.background, 0, 0, settings.size, settings.size);
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} else if (settings.background) {
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context.fillStyle = settings.background;
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context.fillRect(settings.left, settings.top, settings.size, settings.size);
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}
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var mode = settings.mode;
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if (mode === 1 || mode === 2) {
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drawBackgroundLabel(qr, context, settings);
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} else if (mode === 3 || mode === 4) {
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drawBackgroundImage(qr, context, settings);
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}
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},
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drawModuleDefault = function (qr, context, settings, left, top, width, row, col) {
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if (qr.isDark(row, col)) {
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context.rect(left, top, width, width);
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}
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},
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drawModuleRoundedDark = function (ctx, l, t, r, b, rad, nw, ne, se, sw) {
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if (nw) {
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ctx.moveTo(l + rad, t);
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} else {
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ctx.moveTo(l, t);
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}
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if (ne) {
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ctx.lineTo(r - rad, t);
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ctx.arcTo(r, t, r, b, rad);
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} else {
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ctx.lineTo(r, t);
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}
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if (se) {
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ctx.lineTo(r, b - rad);
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ctx.arcTo(r, b, l, b, rad);
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} else {
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ctx.lineTo(r, b);
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}
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if (sw) {
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ctx.lineTo(l + rad, b);
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ctx.arcTo(l, b, l, t, rad);
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} else {
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ctx.lineTo(l, b);
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}
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if (nw) {
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ctx.lineTo(l, t + rad);
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ctx.arcTo(l, t, r, t, rad);
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} else {
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ctx.lineTo(l, t);
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}
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},
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drawModuleRoundendLight = function (ctx, l, t, r, b, rad, nw, ne, se, sw) {
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if (nw) {
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ctx.moveTo(l + rad, t);
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ctx.lineTo(l, t);
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ctx.lineTo(l, t + rad);
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ctx.arcTo(l, t, l + rad, t, rad);
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}
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if (ne) {
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ctx.moveTo(r - rad, t);
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ctx.lineTo(r, t);
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ctx.lineTo(r, t + rad);
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ctx.arcTo(r, t, r - rad, t, rad);
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}
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if (se) {
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ctx.moveTo(r - rad, b);
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ctx.lineTo(r, b);
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ctx.lineTo(r, b - rad);
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ctx.arcTo(r, b, r - rad, b, rad);
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}
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if (sw) {
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ctx.moveTo(l + rad, b);
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ctx.lineTo(l, b);
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ctx.lineTo(l, b - rad);
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ctx.arcTo(l, b, l + rad, b, rad);
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}
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},
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drawModuleRounded = function (qr, context, settings, left, top, width, row, col) {
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var isDark = qr.isDark,
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right = left + width,
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bottom = top + width,
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radius = settings.radius * width,
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rowT = row - 1,
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rowB = row + 1,
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colL = col - 1,
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colR = col + 1,
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center = isDark(row, col),
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northwest = isDark(rowT, colL),
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north = isDark(rowT, col),
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northeast = isDark(rowT, colR),
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east = isDark(row, colR),
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southeast = isDark(rowB, colR),
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south = isDark(rowB, col),
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southwest = isDark(rowB, colL),
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west = isDark(row, colL);
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if (center) {
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drawModuleRoundedDark(context, left, top, right, bottom, radius, !north && !west, !north && !east, !south && !east, !south && !west);
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} else {
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drawModuleRoundendLight(context, left, top, right, bottom, radius, north && west && northwest, north && east && northeast, south && east && southeast, south && west && southwest);
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}
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},
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drawModules = function (qr, context, settings) {
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var moduleCount = qr.moduleCount,
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moduleSize = settings.size / moduleCount,
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fn = drawModuleDefault,
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row, col;
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if (arcToAvailable && settings.radius > 0 && settings.radius <= 0.5) {
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fn = drawModuleRounded;
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}
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context.beginPath();
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for (row = 0; row < moduleCount; row += 1) {
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for (col = 0; col < moduleCount; col += 1) {
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var l = settings.left + col * moduleSize,
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t = settings.top + row * moduleSize,
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w = moduleSize;
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fn(qr, context, settings, l, t, w, row, col);
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}
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}
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if ($(settings.fill).is('img')) {
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context.strokeStyle = 'rgba(0,0,0,0.5)';
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context.lineWidth = 2;
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context.stroke();
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var prev = context.globalCompositeOperation;
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context.globalCompositeOperation = "destination-out";
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context.fill();
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context.globalCompositeOperation = prev;
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context.clip();
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context.drawImage(settings.fill, 0, 0, settings.size, settings.size);
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context.restore();
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} else {
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context.fillStyle = settings.fill;
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context.fill();
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}
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},
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// Draws QR code to the given `canvas` and returns it.
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drawOnCanvas = function (canvas, settings) {
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|
||||
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.
|
||||
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_size = settings.size,
|
||||
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 (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;
|
||||
},
|
||||
|
||||
createHTML = function (settings) {
|
||||
|
||||
if (canvasAvailable && settings.render === 'canvas') {
|
||||
return createCanvas(settings);
|
||||
} else if (canvasAvailable && settings.render === 'image') {
|
||||
return createImage(settings);
|
||||
}
|
||||
|
||||
return createDiv(settings);
|
||||
},
|
||||
|
||||
// Plugin
|
||||
// ======
|
||||
|
||||
// Default settings
|
||||
// ----------------
|
||||
defaults = {
|
||||
|
||||
// render method: `'canvas'`, `'image'` or `'div'`
|
||||
render: 'canvas',
|
||||
|
||||
// version range somewhere in 1 .. 40
|
||||
minVersion: 1,
|
||||
maxVersion: 40,
|
||||
|
||||
// error correction level: `'L'`, `'M'`, `'Q'` or `'H'`
|
||||
ecLevel: 'L',
|
||||
|
||||
// offset in pixel if drawn onto existing canvas
|
||||
left: 0,
|
||||
top: 0,
|
||||
|
||||
// size in pixel
|
||||
size: 200,
|
||||
|
||||
// code color or image element
|
||||
fill: '#000',
|
||||
|
||||
// background color or image element, `null` for transparent background
|
||||
background: null,
|
||||
|
||||
// content
|
||||
text: 'no text',
|
||||
|
||||
// corner radius relative to module width: 0.0 .. 0.5
|
||||
radius: 0,
|
||||
|
||||
// quiet zone in modules
|
||||
quiet: 0,
|
||||
|
||||
// modes
|
||||
// 0: normal
|
||||
// 1: label strip
|
||||
// 2: label box
|
||||
// 3: image strip
|
||||
// 4: image box
|
||||
mode: 0,
|
||||
|
||||
mSize: 0.1,
|
||||
mPosX: 0.5,
|
||||
mPosY: 0.5,
|
||||
|
||||
label: 'no label',
|
||||
fontname: 'sans',
|
||||
fontcolor: '#000',
|
||||
|
||||
image: null
|
||||
};
|
||||
|
||||
// Register the plugin
|
||||
// -------------------
|
||||
$.fn.qrcode = function(options) {
|
||||
|
||||
var settings = $.extend({}, defaults, options);
|
||||
|
||||
return this.each(function () {
|
||||
|
||||
if (this.nodeName.toLowerCase() === 'canvas') {
|
||||
drawOnCanvas(this, settings);
|
||||
} else {
|
||||
$(this).append(createHTML(settings));
|
||||
}
|
||||
});
|
||||
};
|
||||
|
||||
// jQuery.qrcode plug in code ends here
|
||||
|
||||
// QR Code Generator
|
||||
// =================
|
||||
//---------------------------------------------------------------------
|
||||
//
|
||||
// QR Code Generator for JavaScript
|
||||
@ -1618,5 +1885,5 @@
|
||||
// returns qrcode function.
|
||||
return qrcode;
|
||||
}();
|
||||
|
||||
}(jQuery));
|
||||
|
||||
}(jQuery));
|
||||
Loading…
x
Reference in New Issue
Block a user