source: Dev/trunk/RGraph/docs/resizing.html @ 264

Last change on this file since 264 was 77, checked in by fpvanagthoven, 14 years ago

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[77]1<?php ob_start('ob_gzhandler') ?>
2<!DOCTYPE html>
3<html>
4<head>
5    <meta http-equiv="X-UA-Compatible" content="chrome=1">
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20    -->
21    <title>RGraph: Javascript charts and graph library - Resizing your charts</title>
22
23    <link rel="stylesheet" href="../css/website.css" type="text/css" media="screen" />
24    <link rel="icon" type="image/png" href="../favicon.png">
25   
26    <meta property="og:title" content="RGraph: Javascript charts and graph library" />
27    <meta property="og:description" content="A charts library based on the HTML5 canvas tag" />
28    <meta property="og:image" content="http://www.rgraph.net/images/logo.jpg"/>
29   
30    <script src="../libraries/RGraph.common.core.js" ></script>
31    <script src="../libraries/RGraph.common.context.js" ></script>
32    <script src="../libraries/RGraph.common.resizing.js" ></script>
33    <script src="../libraries/RGraph.common.tooltips.js" ></script>
34    <script src="../libraries/RGraph.line.js" ></script>
35    <!--[if IE 8]><script src="../excanvas/excanvas.original.js"></script><![endif]-->
36   
37    <script>
38        window.onload = function ()
39        {
40            /**
41            * Draw the line chart
42            */
43            var line = new RGraph.Line('myLine', [4,6,3,7,8,4,9,5,6,4,8,5] );
44            line.Set('chart.labels', ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']);
45            line.Set('chart.hmargin', 5);
46            line.Set('chart.title', 'A resizable line chart (tooltips)');
47            line.Set('chart.colors', ['red']);
48            line.Set('chart.resizable', true);
49            line.Set('chart.hmargin', 5);
50            line.Set('chart.shadow', true);
51            line.Set('chart.shadow.blur', 5);
52            line.Set('chart.shadow.offsetx', 1);
53            line.Set('chart.shadow.offsety', 1);
54            line.Set('chart.contextmenu', [['Sample!', function () {alert('A sample item');}]]);
55            line.Set('chart.background.grid.autofit', true);
56            line.Set('chart.background.grid.autofit.numhlines', 10);
57            line.Set('chart.linewidth', 3);
58            //line.Set('chart.tooltips', ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec']);
59            line.Draw();
60           
61            RGraph.AddCustomEventListener(line, 'onresizebegin', function (obj) {cl('onresizebegin has fired');});
62            RGraph.AddCustomEventListener(line, 'onresize', function (obj) {cl('onresize has fired');});
63            RGraph.AddCustomEventListener(line, 'onresizeend', function (obj) {cl('onresizeend has fired');});
64        }
65    </script>
66
67    <script>
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75        var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
76      })();
77    </script>
78
79</head>
80<body>
81
82   
83    <!-- Social networking buttons -->
84        <div id="social_icons" class="warning" style="border-radius: 10px; top: 1px; position: fixed">
85            <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%20charts%20types&title=RGraph:Javascript%20charts%20and%20graphs%20library" target="_blank"><img src="../images/delicious.png" alt="Bookmark with delicious" width="22" height="22" border="0" align="absmiddle" /></a>
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88
89        <script>
90            // Opera fix
91            if (navigator.userAgent.indexOf('Opera') == -1) {
92              document.getElementById("social_icons").style.position = 'fixed';
93            }
94        </script>
95    <!-- Social networking buttons -->
96
97    <div id="breadcrumb">
98        <a href="../index.html">RGraph: Javascript charts and graph library</a>
99        >
100        <a href="index.html">Documentation</a>
101        >
102        Resizing your charts
103    </div>
104
105    <h1>RGraph: <span>Javascript charts and graph library</span> - Resizing your charts</h1>
106
107    <script>
108        if (RGraph.isIE8()) {
109            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. Click <a href="http://support.rgraph.net/message/rgraph-in-internet-explorer-9.html" target="_blank">here</a> to see some screenshots.</div>');
110        }
111    </script>
112
113    <canvas id="myLine" width="400" height="200" style="float: left">[No canvas support]</canvas>
114   
115    <p>&nbsp;</p>
116   
117    <p>
118        RGraph has the facility to allow you to resize your charts. This is new as of 10th April 2010. Because of the
119        numerous events it has to install code on, it is unlikely to work with other dynamic features. The context
120        menu does though, and now that tooltips use DOM2 events, so do they. It can be useful if you are,
121        for example, doing a presentation and need to enlarge the chart.
122    </p>
123   
124    <p>
125        All you need to do to enable it is set <i>chart.resizable</i> to true. There are certain caveats that you should be aware of though:
126    </p>
127   
128    <br clear="all" />
129   
130    <ul>
131        <li>
132            Charts can only be enlarged down and to the right, so you will get better results if your chart is not placed at the
133            right of the page.
134        </li>
135       
136        <li>
137            The minimum you can resize your charts to is 50% of the original chart width/height.
138        </li>
139       
140        <li>
141            <b>Note:</b> Resizing can change the layout of your page (reflows). As such you will need to be careful when laying out your
142            page, and you may need to experiment with things like CSS float:, width, height etc so that the effect is either not apparent
143            or is minimal.
144        </li>
145       
146        <li>
147            If your canvas is nested within a table, resizing can result in very minor (1-2px) positioning changes. These
148            can be mitigated by turning off table borders, setting the cellspacing to 0 and also setting the cellpadding to 0.
149        </li>
150    </ul>
151
152    <br /><br /><br />
153   
154</body>
155</html>
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