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

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21    <title>RGraph: Javascript charts and graph library - Adjusting your charts interactively - Gantt 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 - Gantt chart" />
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" />
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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.gantt.js" ></script>
36    <!--[if IE 8]><script src="../excanvas/excanvas.original.js"></script><![endif]-->
37
38    <script>
39        window.onload = function (e)
40        {
41            gantt_events = [
42                      [31, 28, null, 'Richard'],
43                      [0, 120, null, 'Bob'],
44                      [84, 16, null, 'Fred'],
45                      [35, 45, null, 'Charles'],
46                      [0, 35, null, 'Kev'],
47                      [0, 28, null, 'Wayne'],
48                      [31, 28, null, 'John']
49                     ];
50            var gantt = new RGraph.Gantt('myc');
51            gantt.Set('chart.xmax', 120);
52            gantt.Set('chart.events', gantt_events);
53            gantt.Set('chart.defaultcolor', 'rgba(255,0,0,0.5)');
54            gantt.Set('chart.labels', ['January', 'February', 'March', 'April']);
55            //gantt.Set('chart.borders', false);
56            gantt.Set('chart.title', 'An adjustable Gantt chart');
57            gantt.Set('chart.adjustable', true);
58            gantt.Set('chart.vbars', [
59                                      [0, 31, 'rgba(230,230,230,0.8)'],
60                                      [59, 31, 'rgba(230,230,230,0.8)']
61                                     ]);
62            gantt.Draw();
63       
64            /**
65            * This is how to get notified once adjusting has ended
66            */
67            RGraph.AddCustomEventListener(gantt, 'onadjustend',function (obj)
68            {
69                var events = obj.Get('chart.events');
70                var conf   = RGraph.Registry.Get('chart.adjusting.gantt');
71                var idx    = conf['index'];
72
73                cl(gantt.Get('chart.events')[idx]);
74                cl(conf);
75               
76
77                document.getElementById("eventID").value       = idx;
78                document.getElementById("eventStart").value    = events[idx][0];
79                document.getElementById("eventDuration").value = events[idx][1];
80            });
81       
82            /**
83            * This is how to get notified during the adjusting
84            */
85            RGraph.AddCustomEventListener(gantt, 'onadjust',function (obj)
86            {
87                var events = obj.Get('chart.events');
88                var conf   = RGraph.Registry.Get('chart.adjusting.gantt');
89                var idx    = conf[0];               
90
91                document.getElementById("eventID").value       = conf['index'];
92                document.getElementById("eventStart").value    = events[conf['index']][0];
93                document.getElementById("eventDuration").value = events[conf['index']][1];
94            });
95        }
96    </script>
97
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128
129    <div id="breadcrumb">
130        <a href="../index.html">RGraph: Javascript charts and graph library</a>
131        >
132        <a href="index.html">Documentation</a>
133        >
134        <a href="adjusting.html">Adjusting charts interactively</a>
135        >
136        Gantt chart
137    </div>
138
139    <h1>RGraph: <span>Javascript charts and graph library</span> - Adjusting your charts interactively - Gantt chart</h1>
140
141    <script>
142        if (RGraph.isIE8()) {
143            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>');
144        }
145    </script>
146   
147    <p>
148        The Gantt chart can be adjusted by dragging the bars left or right, or the events can be resized if you place the cursor at the
149        right edge of the event. To get the details of the bar being dragged you can use the
150        <i>onadjustend</i> event, and in that you can look at the RGraph registry - <i>RGraph.Registry.Get('chart.adjusting.gantt')</i> The
151        returned array consists of:
152
153        <ul>
154            <li>The numerical index of the event being adjusted (corresponding to the chart.events array that you set).</li>
155            <li>The chart object</li>
156            <li>The starting X position of the bar (before the chart was adjusted)</li>
157            <li>The starting Y position of the bar (before the chart was adjusted)</li>
158            <li>The original numerical value (in relation to your chart.xmax) that the bar started at</li>
159        </ul>
160    </p>
161   
162    <p>
163        When adjusting is complete the <i>chart.events</i> array is updated. So you can use the numerical index that you find in
164        the registry (as above) with the <i>chart.events</i> array to get up-to-date event information.
165    </p>
166   
167    <p>
168        <b>Note:</b>
169        The Gantt chart uses console.log() to send notifications. Press CTRL+SHIFT+J in Chrome to see the console, or use Firebug in
170        Firefox. Other browsers will vary.       
171    </p>
172
173    <canvas id="myc" width="1000" height="250">[No canvas support]</canvas>
174    Event ID: <input type="text" id="eventID" readonly />
175    Event start: <input type="text" id="eventStart" readonly />
176    Event duration: <input type="text" id="eventDuration" readonly />
177
178    <pre class="code">
179&lt;script&gt;
180    window.onload = function (e)
181    {
182        gantt_events = [
183                  [31, 28, null, 'Richard'],
184                  [0, 120, null, 'Bob'],
185                  [84, 16, null, 'Fred'],
186                  [35, 45, null, 'Charles'],
187                  [0, 35, null, 'Kev'],
188                 ];
189        var gantt = new RGraph.Gantt('myc');
190        gantt.Set('chart.xmax', 120);
191        gantt.Set('chart.events', gantt_events);
192        gantt.Set('chart.defaultcolor', '#0c0');
193        gantt.Set('chart.labels', ['January', 'February', 'March', 'April']);
194        gantt.Set('chart.borders', false);
195        gantt.Set('chart.adjustable', true);
196        gantt.Draw();
197   
198        /**
199        * This is how to get notified once adjusting has ended
200        */
201        RGraph.AddCustomEventListener(gantt, 'onadjustend',function (obj)
202        {
203                var idx = RGraph.Registry.Get('chart.adjusting.gantt')[0];
204
205                cl(RGraph.Registry.Get('chart.adjusting.gantt'));
206                cl(gantt.Get('chart.events')[idx]);
207        });
208       
209        /**
210        * This is how to get notified during the adjusting
211        */
212        RGraph.AddCustomEventListener(gantt, 'onadjust',function (obj)
213        {
214            var events = obj.Get('chart.events');
215            var conf   = RGraph.Registry.Get('chart.adjusting.gantt');
216            var idx    = conf[0];               
217
218            document.getElementById("eventID").value       = conf[0];
219            document.getElementById("eventStart").value    = events[conf[0]][0];
220            document.getElementById("eventDuration").value = events[conf[0]][1];
221        });
222    }
223&lt;/script&gt;
224</pre>
225
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