source: Dev/trunk/RGraph/docs/adjusting_thermometer.html @ 77

Last change on this file since 77 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>
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21    <title>RGraph: Javascript charts and graph library - Adjusting your charts interactively - Thermometer chart</title>
22   
23    <meta name="keywords" content="rgraph html5 canvas chart adjusting docs" />
24    <meta name="description" content="RGraph: Javascript charts and graph library - Documentation about adjusting your charts - Thermometer chart" />
25   
26    <meta property="og:title" content="RGraph: Javascript charts and graph library" />
27    <meta property="og:description" content="A chart library based on the HTML5 canvas tag" />
28    <meta property="og:image" content="http://www.rgraph.net/images/logo.png"/>
29
30    <link rel="stylesheet" href="../css/website.css" type="text/css" media="screen" />
31    <link rel="icon" type="image/png" href="../images/favicon.png">
32   
33    <script src="../libraries/RGraph.common.core.js" ></script>
34    <script src="../libraries/RGraph.common.adjusting.js" ></script>
35    <script src="../libraries/RGraph.thermometer.js" ></script>
36    <!--[if IE 8]><script src="../excanvas/excanvas.original.js"></script><![endif]-->
37
38    <script>
39        window.onload = function (e)
40        {
41            var thermometer = new RGraph.Thermometer('myc', 0, 100, 78);
42           
43            var grad = thermometer.context.createLinearGradient(0,50,0,350);
44            grad.addColorStop(0, 'orange');
45            grad.addColorStop(1, 'white');
46
47            thermometer.Set('chart.colors', [grad]);
48            thermometer.Set('chart.title.side', 'An adjustable thermometer');
49            thermometer.Set('chart.adjustable', true);
50            thermometer.Draw();
51
52            RGraph.AddCustomEventListener(thermometer, 'onadjustbegin', function (obj) {document.getElementById("output").value += 'Value before adjustment: ' + obj.value + '\n';});
53            RGraph.AddCustomEventListener(thermometer, 'onadjust', function (obj) {document.getElementById("output").value += 'Value during adjustment: ' + obj.value + '\n';});
54            RGraph.AddCustomEventListener(thermometer, 'onadjustend', function (obj) {document.getElementById("output").value += 'Value after adjustment: ' + obj.value + '\n';});
55        }
56    </script>
57
58
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70</head>
71
72<body>
73
74   
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80
81        <script>
82            // Opera fix
83            if (navigator.userAgent.indexOf('Opera') == -1) {
84              document.getElementById("social_icons").style.position = 'fixed';
85            }
86        </script>
87    <!-- Social networking buttons -->
88
89    <div id="breadcrumb">
90        <a href="../index.html">RGraph: Javascript charts and graph library</a>
91        >
92        <a href="index.html">Documentation</a>
93        >
94        <a href="adjusting.html">Adjusting charts interactively</a>
95        >
96        Thermometer chart
97    </div>
98
99    <h1>RGraph: <span>Javascript charts and graph library</span> - Adjusting your charts interactively - Thermometer chart</h1>
100
101    <script>
102        if (RGraph.isIE8()) {
103             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>');
104        }
105    </script>
106
107    <canvas id="myc" width="100" height="400" style="float: left">[No canvas support]</canvas>
108   
109    <p>
110        Nothing pertinent is kept in the registry. If you wish to get the new value of the thermometer you can check <i>obj.value</i>.
111        If you want the value before the adjustment, you can check the value with the onadjustbegin event (instead of the
112        onadjustend event).
113    </p>
114   
115    <p>
116        <textarea id="output" style="width: 600px; height: 200px;"></textarea>
117    </p>
118
119    <br clear="all" />
120
121    <pre class="code">
122&lt;script&gt;
123    window.onload = function (e)
124    {
125        var thermometer = new RGraph.Thermometer('myc', 0, 100, 78);
126       
127        var grad = thermometer.context.createLinearGradient(0,50,0,350);
128        grad.addColorStop(0, 'orange');
129        grad.addColorStop(1, 'white');
130
131        thermometer.Set('chart.colors', [grad]);
132        thermometer.Set('chart.title.side', 'An adjustable thermometer');
133        thermometer.Set('chart.adjustable', true);
134        thermometer.Draw();
135
136        RGraph.AddCustomEventListener(thermometer, 'onadjustbegin', function (obj) {document.getElementById("output").value += 'Value before adjustment: ' + obj.value + '\n';});
137        RGraph.AddCustomEventListener(thermometer, 'onadjust', function (obj) {document.getElementById("output").value += 'Value during adjustment: ' + obj.value + '\n';});
138        RGraph.AddCustomEventListener(thermometer, 'onadjustend', function (obj) {document.getElementById("output").value += 'Value after adjustment: ' + obj.value + '\n';});
139    }
140&lt;/script&gt;
141</pre>
142</body>
143</html>
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