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+<!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: Javascript charts &amp; HTML5 canvas charts library - Animated rotating text with the RGraph software</title>
+
+ <link rel="stylesheet" href="../css/website.css" type="text/css" media="screen" />
+ <link rel="icon" type="image/png" href="../images/favicon.png">
+
+ <script src="../libraries/RGraph.common.core.js" ></script>
+
+ <script>
+ __pause = false; // Provide a way to pause the rotation
+ __RGraph_rotate = 0; // A record of the angle (IN DEGREES) we're at currently
+ __RGraph_rotate2 = 0; // Ditto, but this is controlled by the buttons
+
+ window.onload = function ()
+ {
+
+ if (!__pause) {
+ var canvas = document.getElementById("myc");
+ var context = canvas.getContext('2d');
+
+ RGraph.Clear(canvas); // Clears the canvas
+
+ context.beginPath();
+ context.fillStyle = 'black';
+
+ RGraph.Text(context, 'Verdana',10,canvas.width/2,canvas.height/2,'Magic text! (' + __RGraph_rotate + ')','center','center',false, ++__RGraph_rotate);
+ RGraph.Text(context, 'Verdana', 16, 50, 50, 'This is making me dizzy... (' + (__RGraph_rotate * 5) + ')', 'center', 'left', false, __RGraph_rotate * 2);
+ RGraph.Text(context, 'Verdana', 20, 50, 200, 'Some user controllable text (' + __RGraph_rotate2 + ')', 'center', 'center', false, __RGraph_rotate2);
+
+ context.stroke();
+ context.fill();
+ }
+
+ setTimeout(window.onload, 1);
+ }
+ </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>
+
+<div id="breadcrumb">
+ <a href="../index.html">RGraph: Javascript charts &amp; HTML5 canvas charts library</a>
+ >
+ <a href="./index.html">Examples</a>
+ >
+ Rotating text
+</div>
+
+<h1>RGraph: Javascript charts &amp; HTML5 canvas charts - A text function that does horizontal and vertical alignment (and spins)</h1>
+
+
+
+<table border="0" style="float: left; margin-right: 10px">
+ <tr>
+ <td colspan="2"><canvas id="myc" width="300" height="300" style="border: 1px dashed gray">The fallback HTML</canvas></td>
+ </tr>
+
+ <tr>
+ <td align="center">
+ <button style="width: 100px; margin: 5px" onclick="__RGraph_rotate2 -= 5">&laquo; Rotate left</button>&nbsp;
+ <button style="margin: 5px" onclick="if (this.innerHTML == 'Pause') {__pause = true; this.innerHTML = 'Play'} else {this.innerHTML = 'Pause'; __pause = false; }">Pause</button>&nbsp;
+ <button style="width: 100px; margin: 5px" onclick="__RGraph_rotate2 += 5">Rotate right&raquo;</button>
+ </td>
+ </tr>
+</table>
+
+<p>
+ RGraph.Text() is a text drawing function that allows vertical and horizontal alignment, and allows you to specify the angle of the
+ text too. The animation is done by a simple gobal variable, setTimeout() and redrawing the entire
+ canvas every frame. Perhaps not the most efficient of methods, but remember that your Javascript will likely be
+ running on computers that have more processing power than
+ some small countries... <a href="javascript: location.href = location.href">Reset the page</a>
+</p>
+
+<p>
+ In a similar vein you could easily make some text that bounces from one side of the screen to the other,
+ hurrah - the return of &lt;marquee&gt;!
+</p>
+
+ <div>
+ More examples can be found on the individual <a href="/examples/index.html">example pages</a>, and a more complete
+ reference to the Text() function can be found in the <a href="../docs/api.html#functions.other">API docs</a>.
+ </div>
+
+</body>
+</html><!-- 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&notes=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&amp;href=http%3A%2F%2Fwww.rgraph.net&amp;send=false&amp;layout=button_count&amp;width=450&amp;show_faces=false&amp;action=like&amp;colorscheme=light&amp;font=arial&amp;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>
+ \ No newline at end of file