diff options
Diffstat (limited to 'schall/static/RGraph/docs/annotate_persist.html')
| -rw-r--r-- | schall/static/RGraph/docs/annotate_persist.html | 303 |
1 files changed, 303 insertions, 0 deletions
diff --git a/schall/static/RGraph/docs/annotate_persist.html b/schall/static/RGraph/docs/annotate_persist.html new file mode 100644 index 0000000..c4d4f9d --- /dev/null +++ b/schall/static/RGraph/docs/annotate_persist.html @@ -0,0 +1,303 @@ +<!DOCTYPE html > +<html> +<head> + <meta http-equiv="X-UA-Compatible" content="chrome=1"> + <!-- + /** + * o------------------------------------------------------------------------------o + * | This file is part of the RGraph package - you can learn more at: | + * | | + * | http://www.rgraph.net | + * | | + * | This package is licensed under the RGraph license. For all kinds of business | + * | purposes there is a small one-time licensing fee to pay and for non | + * | commercial purposes it is free to use. You can read the full license here: | + * | | + * | http://www.rgraph.net/LICENSE.txt | + * o------------------------------------------------------------------------------o + */ + --> + <title>RGraph: HTML5 Javascript charts library - Making annotations shareable cross browser</title> + + <meta name="keywords" content="rgraph html5 canvas chart docs annotating shareable cross browser" /> + <meta name="description" content="RGraph: HTML5 Javascript charts library - Making annotations shareable cross browser" /> + + <meta property="og:title" content="RGraph: HTML5 Javascript charts library" /> + <meta property="og:description" content="A chart library based on the HTML5 canvas tag" /> + <meta property="og:image" content="http://www.rgraph.net/images/logo.png"/> + + <link rel="stylesheet" href="../css/website.css" type="text/css" media="screen" /> + <link rel="icon" type="image/png" href="../images/favicon.png"> + + <!-- Place this tag in your head or just before your close body tag --> + <script type="text/javascript" src="https://apis.google.com/js/plusone.js"></script> + + <script src="../libraries/RGraph.common.core.js"></script> + <script src="../libraries/RGraph.common.annotate.js"></script> + <script src="../libraries/RGraph.common.context.js"></script> + <script src="../libraries/RGraph.line.js"></script> + + <script> + /** + * The function that loads the annotations from the server + */ + function LoadAnnotations () + { + var canvasPosition = RGraph.getCanvasXY(g.canvas); + var div = document.createElement('DIV'); + + div.style.backgroundColor = 'white'; + div.style.padding = '3px'; + div.style.position = 'absolute'; + div.style.left = canvasPosition[0] + 5 + 'px'; + div.style.top = canvasPosition[1] + 5 + 'px'; + div.style.color = 'gray'; + div.style.opacity = 1; + div.style.border = '2px solid black'; + div.style.zIndex = 99; + div.innerHTML = 'Loading annotations...'; + document.body.appendChild(div); + + div2 = document.createElement('DIV'); + div2.style.backgroundColor = 'gray'; + div2.style.opacity = 0.5; + div2.style.position = 'absolute'; + div2.style.left = canvasPosition[0] + 'px'; + div2.style.top = canvasPosition[1] + 'px'; + div2.style.width = g.canvas.width + 'px'; + div2.style.height = g.canvas.height + 'px'; + //div2.style.zIndex = 98; + document.body.appendChild(div2); + + window.localStorage['__rgraph_annotations_cvs__'] = ''; + AjaxGet('annotate_persist.html?getannotations=12', + +function () +{ + if (this.readyState == 4 && this.status == 200) { + window.localStorage['__rgraph_annotations_cvs__'] = this.responseText; + + RGraph.ReplayAnnotations(g); + + setTimeout(function () {div.style.opacity = 0.8; div2.style.opacity = 0.4;}, 50); + setTimeout(function () {div.style.opacity = 0.6;div2.style.opacity = 0.3;}, 100); + setTimeout(function () {div.style.opacity = 0.4;div2.style.opacity = 0.2;}, 150); + setTimeout(function () {div.style.opacity = 0.2;div2.style.opacity = 0.1;}, 200); + setTimeout(function () {div.style.opacity = 0;div2.style.opacity = 0;}, 250); + setTimeout(function () {div.style.display = 'none';div2.style.display = 'none';}, 300); + } +} + ); + } + + + + /** + * The function that saves annotations to the server + */ + function SaveAnnotations () + { + + var canvasPosition = RGraph.getCanvasXY(g.canvas); + var div = document.createElement('DIV'); + + div.style.backgroundColor = 'white'; + div.style.padding = '3px'; + div.style.position = 'absolute'; + div.style.left = canvasPosition[0] + 5 + 'px'; + div.style.top = canvasPosition[1] + 5 + 'px'; + div.style.color = 'gray'; + div.style.opacity = 1; + div.style.border = '2px solid black'; + div.style.zIndex = 99; + div.innerHTML = 'Saving annotations...'; + document.body.appendChild(div); + + AjaxPost('annotate_persist.html', 'data=' + window.localStorage['__rgraph_annotations_cvs__']); + + setTimeout(function () {div.style.opacity = 0.8}, 50); + setTimeout(function () {div.style.opacity = 0.6}, 100); + setTimeout(function () {div.style.opacity = 0.4}, 150); + setTimeout(function () {div.style.opacity = 0.2}, 200); + setTimeout(function () {div.style.opacity = 0; div.style.display = 'none';}, 250); + } + + + + /** + * Makes an AJAX POST. + */ + function AjaxPost (url, data) + { + // Mozilla, Safari, ... + if (window.XMLHttpRequest) { + var httpRequest = new XMLHttpRequest(); + + // MSIE + } else if (window.ActiveXObject) { + var httpRequest = new ActiveXObject("Microsoft.XMLHTTP"); + } + + //httpRequest.onreadystatechange = callback; + + httpRequest.open('POST', url, true); + httpRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); + httpRequest.send(data); + } + + /** + * Makes an AJAX call. It calls the given callback (a function) when ready + * + * @param string url The URL to retrieve + * @param function callback A function object that is called when the response is ready, there's an example below + * called "myCallback". + */ + function AjaxGet (url, callback) + { + // Mozilla, Safari, ... + if (window.XMLHttpRequest) { + var httpRequest = new XMLHttpRequest(); + + // MSIE + } else if (window.ActiveXObject) { + var httpRequest = new ActiveXObject("Microsoft.XMLHTTP"); + } + + httpRequest.onreadystatechange = callback; + + httpRequest.open('GET', url, true); + httpRequest.send(); + } + + + + window.onload = function (e) + { + /** + * This clears the locally stored annotations so that they can be loaded from server + */ + window.localStorage['__rgraph_annotations_cvs__'] = ''; + + g = new RGraph.Line('cvs', [5,6,3,4,8,6,7,5,9]); + g.Set('chart.tickmarks', 'endcircle'); + g.Set('chart.hmargin', 5); + g.Set('chart.annotatable', true); + g.Set('chart.labels', ['Ben','Olga','Jeff','Indigo','Kev','Pete','Lou','Fred','John']); + g.Set('chart.contextmenu', [['Show palette', RGraph.Showpalette], ['Clear', function () {RGraph.Clear(g.canvas);g.Draw();}]]); + g.Set('chart.shadow', true); + g.Set('chart.linewidth', 1.01); + g.Set('chart.ylabels.count', 10); + g.Draw(); + + LoadAnnotations(); + + RGraph.AddCustomEventListener(g, 'onannotateend', function (obj) {SaveAnnotations();}); + RGraph.AddCustomEventListener(g, 'onannotateclear', function (obj) {SaveAnnotations();}); + } + </script> + + + <script> + var _gaq = _gaq || []; + _gaq.push(['_setAccount', 'UA-54706-2']); + _gaq.push(['_trackPageview']); + + (function() { + var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; + ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; + var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); + })(); + </script> +</head> +<body> + + <!-- Social networking buttons --> + <div id="social_icons" class="warning" style="border-radius: 10px; top: 1px; position: fixed; width: 120px; height: 20px"> + <!-- <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%20javascript%20charts%20library%20supporting%20a%20wide%20range%20of%20different%20chart%20types&title=RGraph:%20Javascript%20charts%20%26%20graph%20library" target="_blank"><img src="../images/delicious.png" alt="Bookmark with delicious" width="22" height="22" border="0" style="position: relative; top: 1px" /></a> --> + <a href="http://twitter.com/home/?status=RGraph%3A%20Javascript+charts+library+http%3A%2F%2Fwww.rgraph.net+%23rgraph+%23html5+%23canvas+%23javascript+%23charts+@_rgraph" target="_blank" title="Mention RGraph on Twitter"><img src="../images/twitter.png" alt="Mention RGraph on Twitter"/></a> + <iframe src="http://www.facebook.com/plugins/like.php?app_id=253862424642173&href=http%3A%2F%2Fwww.rgraph.net&send=false&layout=button_count&width=450&show_faces=false&action=like&colorscheme=light&font=arial&height=21" scrolling="no" frameborder="0" style="width: 80px; height:21px; position: relative; top: 1px"></iframe> + </div> + + <script> + // Opera fix + if (navigator.userAgent.indexOf('Opera') == -1) { + document.getElementById("social_icons").style.position = 'fixed'; + } + </script> + + <div id="google_plusone"> + <!-- Place this tag where you want the +1 button to render --> + <g:plusone href="http://www.rgraph.net"></g:plusone> + </div> + <!-- Social networking buttons --> + + <div id="breadcrumb"> + <a href="../index.html">RGraph: HTML5 Javascript charts library</a> + > + <a href="index.html">Documentation</a> + > + Cross-browser annotations + </div> + + <h1>RGraph: <span>HTML5 Javascript charts library</span> - Making annotations shareable cross browser</h1> + + <div style="text-align: center"> + <div class="warning" style="display: inline-block"> + This example does not work offline - you must use a website. Annotations are removed every five minutes. + </div> + </div> + + <script> + if (RGraph.isIE8()) { + 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 charts, 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.</div>'); + } + </script> + + <canvas id="cvs" width="600" height="250" style="float: right">[No canvas support]</canvas> + + <p> + Combining a little AJAX and some very simple server side scripting, you can easily make an annotation system that can persist + across different browsers and computers. You an either use Load/Save buttons to trigger the loading and saving, or like the + example to the right you can make use of the custom RGraph onannotateend event to make it happen automatically. + </p> + + <p> + This simple example uses a small PHP server side script that loads and saves the annotation data to a file on the server, + and that looks like this: + </p> + + <br clear="all" /> + + <pre class="code"> +<?php + $file = '/tmp/annotation_data'; + + /** + * Save the annotations to a tmp file + */ + if (isset($_POST) && isset($_POST['data'])) { + file_put_contents($file, $_POST['data']); + exit; + } + + + /** + * Load the annotations + */ + if (!empty($_GET['getannotations']) && $_GET['getannotations'] == 1) { + $contents = file_get_contents($file); + print($contents); + exit; + } +?> +</pre> + + <p> + By making the Javascript Save/Load functions repeat themselves every few seconds, you could easily make a presentation/demo system + that can be used when paticipants are in differing locations - in a similar fashion to Google Docs - or when you want one persons + annotations to be viewable by multiple PCs. On this page though, the Save function is triggered by the custom RGraph event + <i>onannotateend</i>. + </p> + +</body> +</html>
\ No newline at end of file |