<%@ Page Language="C#" Debug="true" %>
<%@ Import Namespace="ChartDirector" %>
<%@ Register TagPrefix="chart" Namespace="ChartDirector" Assembly="netchartdir" %>
<script runat="server">

//
// Draw the chart
//
private void drawChart(WebChartViewer viewer)
{
    //
    // Data to draw the chart. In this demo, the data buffer will be filled by a random data
    // generator. In real life, the data is probably stored in a buffer (eg. a database table, a
    // text file, or some global memory) and updated by other means.
    //

    // We use a data buffer to emulate the last 240 samples.
    int sampleSize = 240;
    double[] dataSeries1 = new double[sampleSize];
    double[] dataSeries2 = new double[sampleSize];
    double[] dataSeries3 = new double[sampleSize];
    DateTime[] timeStamps = new DateTime[sampleSize];

    // Our pseudo random number generator
    DateTime firstDate = DateTime.Now.AddSeconds(-timeStamps.Length);
    for(int i = 0; i < timeStamps.Length; ++i) {
        timeStamps[i] = firstDate.AddSeconds(i);
        double p = timeStamps[i].Ticks / 10000000;
        dataSeries1[i] = Math.Cos(p * 7 * 18463) * 10 + 1 / (Math.Cos(p) * Math.Cos(p) + 0.01) + 20;
        dataSeries2[i] = 100 * Math.Sin(p / 27.7) * Math.Sin(p / 10.1) + 150;
        dataSeries3[i] = 100 * Math.Cos(p / 6.7) * Math.Cos(p / 11.9) + 150;
    }

    // Create an XYChart object 600 x 270 pixels in size, with light grey (f4f4f4) background, black
    // (000000) border, 1 pixel raised effect, and with a rounded frame.
    XYChart c = new XYChart(600, 270, 0xf4f4f4, 0x000000, 0);
    c.setRoundedFrame();

    // Set the plotarea at (55, 62) and of size 520 x 175 pixels. Use white (ffffff) background.
    // Enable both horizontal and vertical grids by setting their colors to grey (cccccc). Set
    // clipping mode to clip the data lines to the plot area.
    c.setPlotArea(55, 62, 520, 175, 0xffffff, -1, -1, 0xcccccc, 0xcccccc);
    c.setClipping();

    // Add a title to the chart using 15 pts Times New Roman Bold Italic font, with a light grey
    // (dddddd) background, black (000000) border, and a glass like raised effect.
    c.addTitle("Zooming and Scrolling Demonstration", "Times New Roman Bold Italic", 15
        ).setBackground(0xdddddd, 0x000000, Chart.glassEffect());

    // Add a legend box at the top of the plot area with 9pts Arial Bold font. We set the legend box
    // to the same width as the plot area and use grid layout (as opposed to flow or top/down
    // layout). This distributes the 3 legend icons evenly on top of the plot area.
    LegendBox b = c.addLegend2(55, 33, 3, "Arial Bold", 9);
    b.setBackground(Chart.Transparent, Chart.Transparent);
    b.setWidth(520);

    // Configure the y-axis with a 10pts Arial Bold axis title
    c.yAxis().setTitle("Price (USD)", "Arial Bold", 10);

    // Configure the x-axis to auto-scale with at least 75 pixels between major tick and 15 pixels
    // between minor ticks. This shows more minor grid lines on the chart.
    c.xAxis().setTickDensity(75, 15);

    // Set the axes width to 2 pixels
    c.xAxis().setWidth(2);
    c.yAxis().setWidth(2);

    // Set the x-axis label format
    c.xAxis().setLabelFormat("{value|hh:nn:ss}");

    // Create a line layer to plot the lines
    LineLayer layer = c.addLineLayer2();

    // The x-coordinates are the timeStamps.
    layer.setXData(timeStamps);

    // The 3 data series are used to draw 3 lines. Here we put the latest data values as part of the
    // data set name, so you can see them updated in the legend box.
    layer.addDataSet(dataSeries1, 0xff0000, c.formatValue(dataSeries1[dataSeries1.Length - 1],
        "Software: <*bgColor=FFCCCC*> {value|2} "));
    layer.addDataSet(dataSeries2, 0x00cc00, c.formatValue(dataSeries2[dataSeries2.Length - 1],
        "Hardware: <*bgColor=CCFFCC*> {value|2} "));
    layer.addDataSet(dataSeries3, 0x0000ff, c.formatValue(dataSeries3[dataSeries3.Length - 1],
        "Services: <*bgColor=CCCCFF*> {value|2} "));

    // output the chart
    WebChartViewer1.Image = c.makeWebImage(Chart.PNG);
    WebChartViewer1.ImageMap = c.getHTMLImageMap("", "", "title='x={x|hh:nn:ss}, y={value|2}'");
}

//
// Page Load event handler
//
protected void Page_Load(object sender, EventArgs e)
{
    // Draw chart using the most update data
    drawChart(WebChartViewer1);

    // If is streaming request, output the chart immediately and terminate the page
    if (WebChartViewer.IsPartialUpdateRequest(Page)) {
        WebChartViewer1.PartialUpdateChart();
    }
}

</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>ChartDirector Realtime Chart Demonstration</title>
    <script type="text/javascript" src="cdjcv.js"></script>
</head>
<body style="margin:0px">
<table cellspacing="0" cellpadding="0" border="0">
    <tr>
        <td align="right" colspan="2" style="background:#000088">
            <div style="padding-bottom:2px; padding-right:3px; font-weight:bold; font-size:10pt; font-style:italic; font-family:Arial;">
                <a style="color:#FFFF00; text-decoration:none" href="http://www.advsofteng.com/">Advanced Software Engineering</a>
            </div>
        </td>
    </tr>
    <tr valign="top">
        <td style="width:150px; background:#c0c0ff; border-left:black 1px solid; border-right:black 1px solid; border-bottom:black 1px solid;">
            <br /><br />
            <div style="padding:10px; font-size:9pt; font-family:Verdana">
                <b>Update Period</b><br />
                <select id="UpdatePeriod" style="width:130px">
                    <option value="5">5 seconds</option>
                    <option value="10" selected="selected">10 seconds</option>
                    <option value="20">20 seconds</option>
                    <option value="30">30 seconds</option>
                    <option value="60">60 seconds</option>
                </select>
            </div>
            <div style="padding:10px; font-size:9pt; font-family:Verdana">
                <b>Time Remaining</b><br />
                <div style="width:130px; border:#888888 1px inset;">
                    <div style="margin:3px" id="TimeRemaining">&nbsp;</div>
                </div>
            </div>
        </td>
        <td>
            <div style="font-weight:bold; font-size:20pt; margin:5px 0px 0px 5px; font-family:Arial">
                ChartDirector Realtime Chart Demonstration
            </div>
            <hr style="border:solid 1px #000080" />
            <div style="padding:0px 5px 0px 10px">
                <chart:webchartviewer id="WebChartViewer1" runat="server" />
            </div>
        </td>
    </tr>
</table>
<script type="text/javascript">
// The followings is executed once every second
function updateDisplay()
{
    // Utility to get an object by id that works with most browsers
    var getObj = function(id) {    return document.getElementById ? document.getElementById(id) : document.all[id]; }

    // Get the configured update period
    var updatePeriodObj = getObj("UpdatePeriod");
    var updatePeriod = parseInt(updatePeriodObj.value);

    // Subtract 1 second for the remaining time - reload the counter if remaining time is 0
    if (!updatePeriodObj.timeLeft || (updatePeriodObj.timeLeft <= 0))
        updatePeriodObj.timeLeft = updatePeriod - 1;
    else
        updatePeriodObj.timeLeft = Math.min(updatePeriod, updatePeriodObj.timeLeft) - 1;

    // Update the chart if configured time has elasped
    if ((updatePeriodObj.timeLeft <= 0) && window.JsChartViewer)
        JsChartViewer.get('<%=WebChartViewer1.ClientID%>').partialUpdate();

    // Update the display to show remaining time
    getObj("TimeRemaining").innerHTML = updatePeriodObj.timeLeft + ((updatePeriodObj.timeLeft > 1) ? " seconds" : " second");
}
JsChartViewer.updatingMsg = '';
window.setInterval("updateDisplay()", 1000);
</script>
</body>
</html>