Use Tinycon to display chat mentions in favicon.
This commit is contained in:
Marcel Klehr
parent
ead379cf66
commit
dc9eda9364
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@ -23,11 +23,12 @@
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var padutils = require('./pad_utils').padutils;
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var padcookie = require('./pad_cookie').padcookie;
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require('./tinycon');
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var chat = (function()
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{
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var isStuck = false;
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var chatMentions = 0;
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var title = document.title;
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var self = {
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show: function ()
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{
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@ -35,7 +36,7 @@ var chat = (function()
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$("#chatbox").show();
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self.scrollDown();
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chatMentions = 0;
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document.title = title;
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Tinycon.setBubble(0);
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},
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stickToScreen: function(fromInitialCall) // Make chat stick to right hand side of screen
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{
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@ -126,12 +127,9 @@ var chat = (function()
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// chat throb stuff -- Just make it throw for twice as long
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if(wasMentioned && !alreadyFocused)
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{ // If the user was mentioned show for twice as long and flash the browser window
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if (chatMentions == 0){
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title = document.title;
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}
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$('#chatthrob').html("<b>"+authorName+"</b>" + ": " + text).show().delay(4000).hide(400);
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chatMentions++;
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document.title = "("+chatMentions+") " + title;
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Tinycon.setBubble(chatMentions);
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}
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else
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{
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@ -141,7 +139,7 @@ var chat = (function()
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// Clear the chat mentions when the user clicks on the chat input box
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$('#chatinput').click(function(){
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chatMentions = 0;
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document.title = title;
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Tinycon.setBubble(0);
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});
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self.scrollDown();
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@ -0,0 +1,237 @@
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/*!
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* Tinycon - A small library for manipulating the Favicon
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* Tom Moor, http://tommoor.com
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* Copyright (c) 2012 Tom Moor
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* MIT Licensed
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* @version 0.2.6
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*/
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(function(){
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var Tinycon = {};
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var currentFavicon = null;
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var originalFavicon = null;
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var originalTitle = document.title;
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var faviconImage = null;
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var canvas = null;
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var options = {};
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var defaults = {
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width: 7,
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height: 9,
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font: '10px arial',
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colour: '#ffffff',
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background: '#F03D25',
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fallback: true
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};
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var ua = (function () {
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var agent = navigator.userAgent.toLowerCase();
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// New function has access to 'agent' via closure
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return function (browser) {
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return agent.indexOf(browser) !== -1;
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};
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}());
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var browser = {
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ie: ua('msie'),
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chrome: ua('chrome'),
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webkit: ua('chrome') || ua('safari'),
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safari: ua('safari') && !ua('chrome'),
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mozilla: ua('mozilla') && !ua('chrome') && !ua('safari')
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};
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// private methods
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var getFaviconTag = function(){
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var links = document.getElementsByTagName('link');
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for(var i=0, len=links.length; i < len; i++) {
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if ((links[i].getAttribute('rel') || '').match(/\bicon\b/)) {
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return links[i];
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}
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}
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return false;
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};
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var removeFaviconTag = function(){
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var links = document.getElementsByTagName('link');
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var head = document.getElementsByTagName('head')[0];
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for(var i=0, len=links.length; i < len; i++) {
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var exists = (typeof(links[i]) !== 'undefined');
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if (exists && links[i].getAttribute('rel') === 'icon') {
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head.removeChild(links[i]);
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}
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}
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};
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var getCurrentFavicon = function(){
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if (!originalFavicon || !currentFavicon) {
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var tag = getFaviconTag();
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originalFavicon = currentFavicon = tag ? tag.getAttribute('href') : '/favicon.ico';
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}
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return currentFavicon;
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};
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var getCanvas = function (){
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if (!canvas) {
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canvas = document.createElement("canvas");
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canvas.width = 16;
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canvas.height = 16;
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}
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return canvas;
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};
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var setFaviconTag = function(url){
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removeFaviconTag();
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var link = document.createElement('link');
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link.type = 'image/x-icon';
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link.rel = 'icon';
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link.href = url;
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document.getElementsByTagName('head')[0].appendChild(link);
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};
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var log = function(message){
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if (window.console) window.console.log(message);
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};
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var drawFavicon = function(num, colour) {
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// fallback to updating the browser title if unsupported
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if (!getCanvas().getContext || browser.ie || browser.safari || options.fallback === 'force') {
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return updateTitle(num);
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}
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var context = getCanvas().getContext("2d");
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var colour = colour || '#000000';
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var num = num || 0;
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var src = getCurrentFavicon();
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faviconImage = new Image();
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faviconImage.onload = function() {
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// clear canvas
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context.clearRect(0, 0, 16, 16);
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// draw original favicon
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context.drawImage(faviconImage, 0, 0, faviconImage.width, faviconImage.height, 0, 0, 16, 16);
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// draw bubble over the top
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if (num > 0) drawBubble(context, num, colour);
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// refresh tag in page
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refreshFavicon();
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};
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// allow cross origin resource requests if the image is not a data:uri
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// as detailed here: https://github.com/mrdoob/three.js/issues/1305
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if (!src.match(/^data/)) {
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faviconImage.crossOrigin = 'anonymous';
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}
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faviconImage.src = src;
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};
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var updateTitle = function(num) {
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if (options.fallback) {
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if (num > 0) {
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document.title = '('+num+') ' + originalTitle;
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} else {
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document.title = originalTitle;
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}
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}
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};
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var drawBubble = function(context, num, colour) {
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// bubble needs to be larger for double digits
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var len = (num+"").length-1;
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var width = options.width + (6*len);
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var w = 16-width;
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var h = 16-options.height;
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// webkit seems to render fonts lighter than firefox
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context.font = (browser.webkit ? 'bold ' : '') + options.font;
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context.fillStyle = options.background;
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context.strokeStyle = options.background;
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context.lineWidth = 1;
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// bubble
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context.fillRect(w,h,width-1,options.height);
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// rounded left
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context.beginPath();
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context.moveTo(w-0.5,h+1);
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context.lineTo(w-0.5,15);
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context.stroke();
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// rounded right
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context.beginPath();
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context.moveTo(15.5,h+1);
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context.lineTo(15.5,15);
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context.stroke();
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// bottom shadow
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context.beginPath();
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context.strokeStyle = "rgba(0,0,0,0.3)";
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context.moveTo(w,16);
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context.lineTo(15,16);
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context.stroke();
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// number
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context.fillStyle = options.colour;
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context.textAlign = "right";
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context.textBaseline = "top";
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// unfortunately webkit/mozilla are a pixel different in text positioning
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context.fillText(num, 15, browser.mozilla ? 7 : 6);
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};
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var refreshFavicon = function(){
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// check support
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if (!getCanvas().getContext) return;
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setFaviconTag(getCanvas().toDataURL());
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};
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// public methods
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Tinycon.setOptions = function(custom){
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options = {};
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for(var key in defaults){
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options[key] = custom.hasOwnProperty(key) ? custom[key] : defaults[key];
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}
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return this;
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};
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Tinycon.setImage = function(url){
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currentFavicon = url;
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refreshFavicon();
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return this;
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};
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Tinycon.setBubble = function(num, colour){
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// validate
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if(isNaN(parseFloat(num)) || !isFinite(num)) return log('Bubble must be a number');
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drawFavicon(num, colour);
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return this;
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};
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Tinycon.reset = function(){
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Tinycon.setImage(originalFavicon);
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};
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Tinycon.setOptions(defaults);
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window.Tinycon = Tinycon;
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})();
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