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pre{
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p, h3{
display: inline;
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<h3>hinting:</h3>
<p><a href="https://raw.github.com/ejci/favico.js/master/favico.js">https://raw.github.com/ejci/favico.js/master/favico.js</a></p>
<br>
<small>results show below:</small>
<hr>
<div></div>
<pre><code>
/**
* @fileOverview Favico animations
* @author Miroslav Magda, http://blog.ejci.net
* @version 0.2.1
*/
/**
* Create new favico instance
* @param {Object} Options
* @return {Object} Favico object
* @example
* var favico = new Favico({
* bgColor : '#d00',
* textColor : '#fff',
* type : 'circle',
* animation : 'slide',
* });
*/
var Favico = (function(opt) {'use strict';
opt = (opt) ? opt : {};
var _def = {
bgColor : '#d00',
textColor : '#fff',
type : 'circle',
animation : 'slide',
elementId : false
};
var _opt, _orig, _h, _w, _canvas, _context, _img, _ready, _lastBadge, _running, _readyCb, _stop, _browser;
var _queue = [];
_readyCb = function() {
};
_ready = _stop = false;
/**
* Initialize favico
*/
var init = function() {
//merge initial options
_opt = merge(_def, opt);
_opt.bgColor = hexToRgb(_opt.bgColor);
_opt.textColor = hexToRgb(_opt.textColor);
_opt.animation = (animation.types['' + _opt.animation]) ? _opt.animation : _def.animation;
_opt.type = (type['' + _opt.type]) ? _opt.type : _def.type;
try {
_orig = link.getIcon();
//create temp canvas
_canvas = document.createElement('canvas');
//create temp image
_img = document.createElement('img');
_img.setAttribute('src', _orig.getAttribute('href'));
//get width/height
_img.onload = function() {
_h = (_img.height > 0) ? _img.height : 32;
_w = (_img.width > 0) ? _img.width : 32;
_canvas.height = _h;
_canvas.width = _w;
_context = _canvas.getContext('2d');
icon.ready();
};
_browser = {};
_browser.ff = (/firefox/i.test(navigator.userAgent.toLowerCase()));
_browser.chrome = (/chrome/i.test(navigator.userAgent.toLowerCase()));
_browser.opera = (/opera/i.test(navigator.userAgent.toLowerCase()));
_browser.ie = (/msie/i.test(navigator.userAgent.toLowerCase())) || (/trident/i.test(navigator.userAgent.toLowerCase()));
_browser.supported = (_browser.chrome || _browser.ff || _browser.opera);
} catch(e) {
throw 'Error initializing favico...';
}
};
/**
* Icon namespace
*/
var icon = {};
/**
* Icon is ready (reset icon) and start animation (if ther is any)
*/
icon.ready = function() {
_ready = true;
icon.reset();
_readyCb();
};
/**
* Reset icon to default state
*/
icon.reset = function() {
//reset
_queue = [];
_lastBadge = false;
_context.clearRect(0, 0, _w, _h);
_context.drawImage(_img, 0, 0, _w, _h);
link.setIcon(_canvas);
};
/**
* Start animation
*/
icon.start = function() {
if (!_ready || _running) {
return;
}
var finished = function() {
_lastBadge = _queue[0];
_running = false;
if (_queue.length > 0) {
_queue.shift();
icon.start();
} else {
}
};
if (_queue.length > 0) {
_running = true;
if (_lastBadge) {
animation.run(_lastBadge.options, function() {
animation.run(_queue[0].options, function() {
finished();
}, false);
}, true);
} else {
animation.run(_queue[0].options, function() {
finished();
}, false);
}
}
};
/**
* Badge types
*/
var type = {};
var options = function(opt) {
opt.n = Math.abs(opt.n);
opt.x = _w * opt.x;
opt.y = _h * opt.y;
opt.w = _w * opt.w;
opt.h = _h * opt.h;
return opt;
};
/**
* Generate circle
* @param {Object} opt Badge options
*/
type.circle = function(opt) {
opt = options(opt);
var more = (opt.n > 9);
if (more) {
opt.x = opt.x - opt.w * .4;
opt.w = opt.w * 1.4;
}
_context.clearRect(0, 0, _w, _h);
_context.drawImage(_img, 0, 0, _w, _h);
_context.beginPath();
_context.font = "bold " + Math.floor(opt.h) + "px sans-serif";
_context.textAlign = 'center';
if (more) {
_context.moveTo(opt.x + opt.w / 2, opt.y);
_context.lineTo(opt.x + opt.w - opt.h / 2, opt.y);
_context.quadraticCurveTo(opt.x + opt.w, opt.y, opt.x + opt.w, opt.y + opt.h / 2);
_context.lineTo(opt.x + opt.w, opt.y + opt.h - opt.h / 2);
_context.quadraticCurveTo(opt.x + opt.w, opt.y + opt.h, opt.x + opt.w - opt.h / 2, opt.y + opt.h);
_context.lineTo(opt.x + opt.h / 2, opt.y + opt.h);
_context.quadraticCurveTo(opt.x, opt.y + opt.h, opt.x, opt.y + opt.h - opt.h / 2);
_context.lineTo(opt.x, opt.y + opt.h / 2);
_context.quadraticCurveTo(opt.x, opt.y, opt.x + opt.h / 2, opt.y);
} else {
_context.arc(opt.x + opt.w / 2, opt.y + opt.h / 2, opt.h / 2, 0, 2 * Math.PI);
}
_context.fillStyle = 'rgba(' + _opt.bgColor.r + ',' + _opt.bgColor.g + ',' + _opt.bgColor.b + ',' + opt.o + ')';
_context.fill();
_context.closePath();
_context.beginPath();
_context.stroke();
_context.fillStyle = 'rgba(' + _opt.textColor.r + ',' + _opt.textColor.g + ',' + _opt.textColor.b + ',' + opt.o + ')';
_context.fillText((more) ? '9+' : opt.n, Math.floor(opt.x + opt.w / 2), Math.floor(opt.y + opt.h - opt.h * 0.15));
_context.closePath();
};
/**
* Generate rectangle
* @param {Object} opt Badge options
*/
type.rectangle = function(opt) {
opt = options(opt);
var more = (opt.n > 9);
if (more) {
opt.x = Math.floor(opt.x - opt.w * .4);
opt.w = Math.floor(opt.w * 1.4);
}
_context.clearRect(0, 0, _w, _h);
_context.drawImage(_img, 0, 0, _w, _h);
_context.beginPath();
_context.font = "bold " + Math.floor(opt.h) + "px sans-serif";
_context.textAlign = 'center';
_context.fillStyle = 'rgba(' + _opt.bgColor.r + ',' + _opt.bgColor.g + ',' + _opt.bgColor.b + ',' + opt.o + ')';
_context.fillRect(opt.x, opt.y, opt.w, opt.h);
_context.fillStyle = 'rgba(' + _opt.textColor.r + ',' + _opt.textColor.g + ',' + _opt.textColor.b + ',' + opt.o + ')';
_context.fillText((more) ? '9+' : opt.n, Math.floor(opt.x + opt.w / 2), Math.floor(opt.y + opt.h - opt.h * 0.15));
_context.closePath();
};
/**
* Set badge
*/
var badge = function(number, animType) {
_readyCb = function() {
try {
if (number > 0) {
if (animation.types['' + animType]) {
_opt.animation = animType;
}
_queue.push({
type : 'badge',
options : {
n : number
}
});
if (_queue.length > 100) {
throw 'Too many badges requests in queue...';
return;
}
icon.start();
} else {
icon.reset();
}
} catch(e) {
throw 'Error setting badge...';
}
};
if (_ready) {
_readyCb();
}
};
/**
* Set image as icon
*/
var image = function(imageElement) {
_readyCb = function() {
try {
var w = imageElement.width;
var h = imageElement.height;
var newImg = document.createElement('img');
var ratio = (w / _w < h / _h) ? (w / _w) : (h / _h);
newImg.setAttribute('src', imageElement.getAttribute('src'));
newImg.height = (h / ratio);
newImg.width = (w / ratio);
_context.clearRect(0, 0, _w, _h);
_context.drawImage(newImg, 0, 0, _w, _h);
link.setIcon(_canvas);
} catch(e) {
throw 'Error setting image...';
}
};
if (_ready) {
_readyCb();
}
};
/**
* Set video as icon
*/
var video = function(videoElement) {
_readyCb = function() {
try {
if (videoElement === 'stop') {
_stop = true;
icon.reset();
_stop = false;
return;
}
var w = videoElement.width;
var h = videoElement.height;
var ratio = (w / _w < h / _h) ? (w / _w) : (h / _h);
videoElement.addEventListener('play', function() {
drawVideo(this);
}, false);
} catch(e) {
throw 'Error setting video...';
}
};
if (_ready) {
_readyCb();
}
};
/**
* Set video as icon
*/
var webcam = function(action) {
//UR
if (!window.URL || !window.URL.createObjectURL) {
window.URL = window.URL || {};
window.URL.createObjectURL = function(obj) {
return obj;
};
}
if (_browser.supported) {
var newVideo = false;
navigator.getUserMedia = navigator.getUserMedia || navigator.oGetUserMedia || navigator.msGetUserMedia || navigator.mozGetUserMedia || navigator.webkitGetUserMedia;
_readyCb = function() {
try {
if (action === 'stop') {
_stop = true;
icon.reset();
_stop = false;
return;
}
newVideo = document.createElement('video');
newVideo.width = _w;
newVideo.height = _h;
navigator.getUserMedia({
video : true,
audio : false
}, function(stream) {
newVideo.src = URL.createObjectURL(stream);
newVideo.play();
drawVideo(newVideo);
}, function() {
});
} catch(e) {
throw 'Error setting webcam...';
}
};
if (_ready) {
_readyCb();
}
}
};
/**
* Draw video to context and repeat :)
*/
function drawVideo(video) {
if (video.paused || video.ended || _stop) {
return false;
}
//nasty hack for FF webcam (Thanks to Julian Ćwirko, [email protected])
try {
_context.clearRect(0, 0, _w, _h);
_context.drawImage(video, 0, 0, _w, _h);
} catch(e) {
}
setTimeout(drawVideo, animation.duration, video);
link.setIcon(_canvas);
}
var link = {};
/**
* Get icon from HEAD tag or create a new <link> element
*/
link.getIcon = function() {
var elm = false;
//get link element
var getLink = function() {
var link = document.getElementsByTagName('head')[0].getElementsByTagName('link');
for (var l = link.length, i = (l - 1); i >= 0; i--) {
if ((/icon/i).test(link[i].getAttribute('rel'))) {
return link[i];
}
}
return false;
};
if (_opt.elementId) {
//if img element identified by elementId
elm = document.getElementById(_opt.elementId);
elm.setAttribute('href', elm.getAttribute('src'));
} else {
//if link element
elm = getLink();
if (elm === false) {
elm = document.createElement('link');
elm.setAttribute('rel', 'icon');
document.getElementsByTagName('head')[0].appendChild(elm);
}
}
elm.setAttribute('type', 'image/png');
//misspelled "image"
return elm;
};
link.setIcon = function(canvas) {
var url = canvas.toDataURL('image/png');
if (_opt.elementId) {
//if is attached to element (image)
document.getElementById(_opt.elementId).setAttribute('src', url);
} else {
//if is attached to fav icon
if (_browser.ff || _browser.opera) {
//for FF we need to "recreate" element, atach to dom and remove old <link>
var originalType = _orig.getAttribute('rel');
var old = _orig;
_orig = document.createElement('link');
//_orig.setAttribute('rel', originalType);
if (_browser.opera) {
_orig.setAttribute('rel', 'icon');
}
_orig.setAttribute('rel', 'icon');
_orig.setAttribute('type', 'image/png');
document.getElementsByTagName('head')[0].appendChild(_orig);
_orig.setAttribute('href', url);
if (old.parentNode) {
old.parentNode.removeChild(old);
}
} else {
_orig.setAttribute('href', url);
}
}
};
//http://stackoverflow.com/questions/5623838/rgb-to-hex-and-hex-to-rgb#answer-5624139
//HEX to RGB convertor
function hexToRgb(hex) {
var shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
hex = hex.replace(shorthandRegex, function(m, r, g, b) {
return r + r + g + g + b + b;
});
var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
return result ? {
r : parseInt(result[1], 16),
g : parseInt(result[2], 16),
b : parseInt(result[3], 16)
} : false;
};
/**
* Merge options
*/
function merge(def, opt) {
var mergedOpt = {};
for (var attrname in def) {
mergedOpt[attrname] = def[attrname];
}
for (var attrname in opt) {
mergedOpt[attrname] = opt[attrname];
}
return mergedOpt;
}
/**
* @namespace animation
*/
var animation = {};
/**
* Animation "frame" duration
*/
animation.duration = 40;
/**
* Animation types (none,fade,pop,slide)
*/
animation.types = {};
animation.types.fade = [{
x : 0.4,
y : 0.4,
w : 0.6,
h : 0.6,
o : 0.0
}, {
x : 0.4,
y : 0.4,
w : 0.6,
h : 0.6,
o : 0.1
}, {
x : 0.4,
y : 0.4,
w : 0.6,
h : 0.6,
o : 0.2
}, {
x : 0.4,
y : 0.4,
w : 0.6,
h : 0.6,
o : 0.3
}, {
x : 0.4,
y : 0.4,
w : 0.6,
h : 0.6,
o : 0.4
}, {
x : 0.4,
y : 0.4,
w : 0.6,
h : 0.6,
o : 0.5
}, {
x : 0.4,
y : 0.4,
w : 0.6,
h : 0.6,
o : 0.6
}, {
x : 0.4,
y : 0.4,
w : 0.6,
h : 0.6,
o : 0.7
}, {
x : 0.4,
y : 0.4,
w : 0.6,
h : 0.6,
o : 0.8
}, {
x : 0.4,
y : 0.4,
w : 0.6,
h : 0.6,
o : 0.9
}, {
x : 0.4,
y : 0.4,
w : 0.6,
h : 0.6,
o : 1.0
}];
animation.types.none = [{
x : 0.4,
y : 0.4,
w : 0.6,
h : 0.6,
o : 1
}];
animation.types.pop = [{
x : 1,
y : 1,
w : 0,
h : 0,
o : 1
}, {
x : 0.9,
y : 0.9,
w : 0.1,
h : 0.1,
o : 1
}, {
x : 0.8,
y : 0.8,
w : 0.2,
h : 0.2,
o : 1
}, {
x : 0.7,
y : 0.7,
w : 0.3,
h : 0.3,
o : 1
}, {
x : 0.6,
y : 0.6,
w : 0.4,
h : 0.4,
o : 1
}, {
x : 0.5,
y : 0.5,
w : 0.5,
h : 0.5,
o : 1
}, {
x : 0.4,
y : 0.4,
w : 0.6,
h : 0.6,
o : 1
}];
animation.types.popFade = [{
x : 0.75,
y : 0.75,
w : 0,
h : 0,
o : 0
}, {
x : 0.65,
y : 0.65,
w : 0.1,
h : 0.1,
o : 0.2
}, {
x : 0.6,
y : 0.6,
w : 0.2,
h : 0.2,
o : 0.4
}, {
x : 0.55,
y : 0.55,
w : 0.3,
h : 0.3,
o : 0.6
}, {
x : 0.50,
y : 0.50,
w : 0.4,
h : 0.4,
o : 0.8
}, {
x : 0.45,
y : 0.45,
w : 0.5,
h : 0.5,
o : 0.9
}, {
x : 0.4,
y : 0.4,
w : 0.6,
h : 0.6,
o : 1
}];
animation.types.slide = [{
x : 0.4,
y : 1,
w : 0.6,
h : 0.6,
o : 1
}, {
x : 0.4,
y : 0.9,
w : 0.6,
h : 0.6,
o : 1
}, {
x : 0.4,
y : 0.9,
w : 0.6,
h : 0.6,
o : 1
}, {
x : 0.4,
y : 0.8,
w : 0.6,
h : 0.6,
o : 1
}, {
x : 0.4,
y : 0.7,
w : 0.6,
h : 0.6,
o : 1
}, {
x : 0.4,
y : 0.6,
w : 0.6,
h : 0.6,
o : 1
}, {
x : 0.4,
y : 0.5,
w : 0.6,
h : 0.6,
o : 1
}, {
x : 0.4,
y : 0.4,
w : 0.6,
h : 0.6,
o : 1
}];
/**
* Run animation
* @param {Object} opt Animation options
* @param {Object} cb Callabak after all steps are done
* @param {Object} revert Reverse order? true|false
* @param {Object} step Optional step number (frame bumber)
*/
animation.run = function(opt, cb, revert, step) {
var animationType = animation.types[_opt.animation];
if (revert === true) {
step = ( typeof step !== 'undefined') ? step : animationType.length - 1;
} else {
step = ( typeof step !== 'undefined') ? step : 0;
}
cb = (cb) ? cb : function() {
};
if ((step < animationType.length) && (step >= 0)) {
type[_opt.type](merge(opt, animationType[step]));
setTimeout(function() {
if (revert) {
step = step - 1;
} else {
step = step + 1;
}
animation.run(opt, cb, revert, step);
}, animation.duration);
link.setIcon(_canvas);
} else {
cb();
return;
}
};
//auto init
init();
return {
badge : badge,
video : video,
image : image,
webcam : webcam,
reset : icon.reset
};
});
</code></pre>