1 <?php ob_start('ob_gzhandler') ?>
5 <meta http-equiv="X-UA-Compatible" content="chrome=1">
8 * o------------------------------------------------------------------------------o
9 * | This file is part of the RGraph package - you can learn more at: |
11 * | http://www.rgraph.net |
13 * | This package is licensed under the RGraph license. For all kinds of business |
14 * | purposes there is a small one-time licensing fee to pay and for non |
15 * | commercial purposes it is free to use. You can read the full license here: |
17 * | http://www.rgraph.net/LICENSE.txt |
18 * o------------------------------------------------------------------------------o
21 <title>RGraph: HTML5 canvas graph library - DOMContentLoaded event</title>
23 <meta name="keywords" content="rgraph html5 canvas graph docs domcontentloaded" />
24 <meta name="description" content="RGraph: HTML5 canvas graph library - DOMContentLoaded example" />
26 <link rel="stylesheet" href="../css/website.css" type="text/css" media="screen" />
27 <link rel="icon" type="image/png" href="../images/favicon.png">
29 <meta name="keywords" content="rgraph graph html5 javascript canvas" />
30 <meta name="description" content="RGraph: The HTML5 graphing library for websites on all platforms" />
32 <script src="../libraries/RGraph.common.core.js" ></script>
33 <script src="../libraries/RGraph.line.js" ></script>
36 window.onload = function ()
38 var duration = (new Date().getTime() - timer.getTime()) / 1000;
39 document.getElementById("waiting").innerHTML = '<span style="color: green">Done! Extra time taken: ' + duration.toFixed(1) + ' seconds</span>';
40 alert('The window.onload event fired, extra time taken: ' + duration.toFixed(1) + ' seconds');
45 var line = new RGraph.Line('cvs', [4,3,2,4,5,6,7,4,8,9]);
46 line.Set('chart.labels', ['Dez', 'Fliss','Geoff','Hoolio','John','Rich','Kev','Charles','Lou','Bob']);
47 line.Set('chart.hmargin', 5);
48 line.Set('chart.title', 'A demonstration of the DOMContentLoaded event');
49 line.Set('chart.tickmarks', 'circle');
50 line.Set('chart.linewidth', 1.01);
52 if (navigator.userAgent.indexOf('Chrome/6') == -1) {
53 line.Set('chart.shadow', true);
54 line.Set('chart.shadow.offsetx', 0);
55 line.Set('chart.shadow.offsety', 0);
56 line.Set('chart.shadow.blur', 15);
62 * Install the function to the appropriate event
64 if(window.addEventListener) {
65 window.addEventListener('DOMContentLoaded', myFunc, false);
67 document.attachEvent("onDOMContentLoaded", myFunc);
70 // Create a timer to show the difference
76 <!-- Social networking buttons -->
77 <script src="../libraries/RGraph.common.core.js" ></script>
80 function HideTwitterDIV ()
82 document.getElementById("twitter_div").style.opacity = 0;
83 document.getElementById("twitter_div").style.display = 'none';
87 function ShowTwitterDIV (e)
89 var e = RGraph.FixEventObject(document.all ? event : e);
90 var div = document.getElementById("twitter_div");
91 var img = document.getElementById("twitter_icon");
93 div.style.display = 'block';
94 div.style.left = (RGraph.getCanvasXY(img)[0] + img.offsetWidth - div.offsetWidth + 110) + 'px';
95 div.style.top = (RGraph.getCanvasXY(img)[1] - 1) + 'px';
100 setTimeout('document.getElementById("twitter_div").style.opacity = 0.2;', 25);
101 setTimeout('document.getElementById("twitter_div").style.opacity = 0.4;', 50);
102 setTimeout('document.getElementById("twitter_div").style.opacity = 0.6;', 100);
103 setTimeout('document.getElementById("twitter_div").style.opacity = 0.8;', 125);
104 setTimeout('document.getElementById("twitter_div").style.opacity = 1.0;', 150);
112 * This code installs the event handler that hides the Twitter DIV
114 if (RGraph.isIE8()) {
115 window.attachEvent('onload', function () {document.body.attachEvent('onclick', HideTwitterDIV);});
117 window.addEventListener('click', HideTwitterDIV, false);
121 <!-- The twitter DIV -->
122 <div id="twitter_div" style="position: absolute;top: 0;left: 0;background-color: #eee;border: 2px dashed black;box-shadow: 0 0 15px #aaa;-moz-box-shadow: 0 0 15px #aaa;-webkit-box-shadow: 0 0 15px #aaa;padding: 3px;display: none;opacity: 0;z-index: 99;">
123 <a href="http://twitter.com/home/?status=RGraph%3A+HTML5+canvas+graph+library+based+on+the+HTML5+canvas+tag+http%3A%2F%2Fwww.rgraph.net+%23rgraph+%23html5+%23canvas" target="_blank" title="Share on Twitter" rel="nofollow" style="text-decoration: none">Tweet about RGraph</a><br>
124 <a href="http://twitter.com/_rgraph" style="text-decoration: none" rel="nofollow" target="_blank">Follow for HTML5 news</a>
127 <div id="social_icons" class="warning" style="top: 0; left: 5px; position: absolute">
130 if (navigator.userAgent.indexOf('Opera') == -1) {
131 document.getElementById("social_icons").style.position = 'fixed';
132 document.getElementById("twitter_div").style.position = 'fixed';
137 <b style="display: inline-block; position: relative; top: 1px">Bookmark and share:</b>
141 <a title="Bookmark with delicious" href="http://delicious.com/save?jump=close&v=4&noui&jump=close&url=http://www.rgraph.net¬es=RGraph%20is%20a%20HTML5%20based%20graph%20library%20supporting%20a%20wide%20range%20of%20different%20graph%20types:Bar,%20Bipolar,%20Donut,%20Funnel,%20Gantt,%20Horizontal%20Bar,%20LED,%20Line,%20Meter,%20Odometer,%20Pie,%20Progress%20Bar,%20Rose,%20RScatter,%20Scatter%20and%20Traditional%20Radar&title=RGraph:%20HTML5%20canvas%20graph%20library%20based%20on%20the%20HTML5%20canvas%20tag" target="_blank">
142 <img src="../images/delicious.png" alt="Bookmark with delicious" width="22" height="22" border="0" align="absmiddle" />
145 <a href="" target="_blank" onmouseover="if (document.getElementById('twitter_div').style.display == 'none') ShowTwitterDIV(event);" onclick="event.stopPropagation(); event.cancelBubble = true; return false">
146 <img src="../images/twitter.png" id="twitter_icon" alt="tweet this site" width="22" height="22" border="0" align="absmiddle" />
151 <a title="Post to Google Buzz!" href="" onclick="window.open('http://www.google.com/buzz/post?url=http://www.rgraph.net&imageurl=http://www.rgraph.net/images/logo.png', 'google_buzz_window', 'width=800,height=400,top=100,left=100'); return false">
152 <img src="../images/buzz.png" width="22" height="22" alt="Post to Google Buzz!" align="absmiddle" style="position: relative; top: -2px; border: 0" border="0"/>
156 <a title="Share RGraph on Facebook" href="" onclick="window.open('http://www.facebook.com/sharer.php?u=http://www.rgraph.net&t=RGraph:%20HTML5%20canvas%20graph%20library', 'facebook_window', 'width=500,height=300,top=100,left=100'); return false">
157 <img src="../images/facebook.png" width="22" height="22" alt="Post to Facebook" align="absmiddle" style="position: relative; top: -2px; border: 0" border="0"/>
160 <a href="mailto:share@friendfeed.com" title="Share on FriendFeed">
161 <img src="../images/friendfeed.png" width="22" height="22" alt="Share on FriendFeed" border="0" align="absmiddle" />
164 <a href="http://www.stumbleupon.com/submit?url=http://www.rgraph.net" target="_blank" title="Share on StumbleUpon" >
165 <img src="../images/stumble.png" alt="Stumble! this site" width="22" height="22" border="0" align="absmiddle" />
170 <!-- /Social networking buttons -->
173 <div id="breadcrumb">
174 <a href="../index.html">RGraph: HTML5 canvas graph library</a>
176 <a href="index.html">Documentation</a>
178 DOMContentLoaded event
181 <h1>RGraph: HTML5 canvas graph library - DOMContentLoaded example</h1>
184 if (RGraph.isIE8()) {
185 document.write('<div style="background-color: #fee; border: 2px dashed red; padding: 5px"><b>Important</b><br /><br /> Internet Explorer 8 does not natively support the HTML5 canvas tag, so if you want to see the graphs, you can either:<ul><li>Install <a href="http://code.google.com/chrome/chromeframe/">Google Chrome Frame</a></li><li>Use ExCanvas. This is provided in the RGraph Archive.</li><li>Use another browser entirely. Your choices are Firefox 3.5+, Chrome 2+, Safari 4+ or Opera 10.5+. </li></ul> <b>Note:</b> Internet Explorer 9 fully supports the canvas tag. Click <a href="http://groups.google.com/group/rgraph/browse_thread/thread/c5651ff8c56b8f3c#" target="_blank">here</a> to see some screenshots.</div>');
189 <p id="waiting" style="; font-weight: bold; font-size: 16pt"><span style="color: #aa0">Waiting for onload event...</span></p>
194 <p style="background-color: #eee; border: 1px dashed gray; padding: 5px; height: 50px;">
195 <span style="display: inline-block; margin-left: 10px; float: right">
197 document.write('<img src="http://ie.microsoft.com/testdrive/HTML5/DOMContentLoaded/whidbey.jpg?' + Math.random() + '" width="50" height="50" /> ');
198 document.write('<img src="http://ie.microsoft.com/testdrive/HTML5/DOMContentLoaded/window.jpg?' + Math.random() + '" width="50" height="50" /> ');
199 document.write('<img src="http://ie.microsoft.com/testdrive/HTML5/DOMContentLoaded/whidbey2.jpg?' + Math.random() + '" width="50" height="50" />');
203 These images are here to pad the page and slow down loading so that the window.onload event is slowed. This makes the
204 difference far more visible.
207 <canvas id="cvs" width="600" height="250" style="float: right">[No canvas support]</canvas>
210 The DOMContentLoaded event is an extremely useful event and can make a big impact on the performance of your pages, hence this
211 example. The DOMContentLoaded event fires when the pages HTML and scripts have loaded, but not necessarily any images or CSS.
212 This can make a big improvement on the apparent speed of your page(s).
216 You can read more about the <i>DOMContentLoaded</i> event on the Mozilla site, <a href="https://developer.mozilla.org/en/Gecko-Specific_DOM_Events" target="_blank">here</a>,
217 and the Microsoft site <a href="http://ie.microsoft.com/testdrive/HTML5/87DOMContent-Loaded/Default.html" target="_blank">here</a>.
223 function createGraph(func)
225 if(window.addEventListener) {
226 window.addEventListener('DOMContentLoaded', func, false);
228 document.attachEvent("onDOMContentLoaded", func);
233 <h4>Browser support</h4>
236 The DOMContentLoaded event is supported by the following browsers:
240 <li>Google Chrome</li>
241 <li><a href="https://developer.mozilla.org/en/Gecko-Specific_DOM_Events" target="_blank">Mozilla Firefox</a></li>
242 <li>Apple Safari</li>
243 <li>Opera ASA. Opera</li>
244 <li><a href="http://ie.microsoft.com/testdrive/HTML5/87DOMContent-Loaded/Default.html" target="_blank">Microsoft Internet Explorer 9</a></li>
249 You might also be interested in <a href="async.html">asynchronous</a> graph creation as an alternative.