<cfscript>
// ChartDirector for ColdFusion API Access Point
cd = CreateObject("java", "ChartDirector.CFChart");
// A utility to allow us to create arrays with data in one line of code
function Array() {
var result = ArrayNew(1);
var i = 0;
for (i = 1; i LTE ArrayLen(arguments); i = i + 1)
result[i] = arguments[i];
return result;
}
//
// Initialize the WebChartViewer when the page is first loaded
//
function initViewer(viewer)
{
// Declare local variables
var startDate = 0;
var endDate = 0;
// The full x-axis range is from Jan 1, 2007 to Jan 1, 2012
startDate = CreateDate(2010, 1, 1);
endDate = CreateDate(2015, 1, 1);
viewer.setFullRange("x", startDate, endDate);
// Initialize the view port to show the last 366 days (out of 1826 days)
viewer.setViewPortWidth(366.0 / 1826);
viewer.setViewPortLeft(1 - viewer.getViewPortWidth());
// Set the maximum zoom to 10 days (out of 1826 days)
viewer.setZoomInWidthLimit(10.0 / 1826);
}
//
// Create a random table for demo purpose.
//
function getRandomTable()
{
// Declare local variables
var r = 0;
r = cd.RanTable(127, 4, 1828);
r.setDateCol(0, CreateDate(2010, 1, 1), 86400);
r.setCol(1, 150, -10, 10);
r.setCol(2, 200, -10, 10);
r.setCol(3, 250, -8, 8);
return r;
}
//
// Draw the chart
//
function drawChart(viewer)
{
// Declare local variables
var viewPortStartDate = 0;
var viewPortEndDate = 0;
var r = 0;
var timeStamps = 0;
var dataSeriesA = 0;
var dataSeriesB = 0;
var dataSeriesC = 0;
var c = 0;
var layer = 0;
var chartQuery = 0;
// Determine the visible x-axis range
viewPortStartDate = cd.NTime(viewer.getValueAtViewPort("x", viewer.getViewPortLeft()));
viewPortEndDate = cd.NTime(viewer.getValueAtViewPort("x", viewer.getViewPortLeft() +
viewer.getViewPortWidth()));
// We need to get the data within the visible x-axis range. In real code, this can be by using a
// database query or some other means as specific to the application. In this demo, we just
// generate a random data table, and then select the data within the table.
r = getRandomTable();
// Select the data for the visible date range viewPortStartDate to viewPortEndDate. It is
// possible there is no data point at exactly viewPortStartDate or viewPortEndDate. In this
// case, we also need the data points that are just outside the visible date range to "overdraw"
// the line a little bit (the "overdrawn" part will be clipped to the plot area) In this demo,
// we do this by adding a one day margin to the date range when selecting the data.
r.selectDate(0, DateAdd("d", -1, viewPortStartDate), DateAdd("d", 1, viewPortEndDate));
// The selected data from the random data table
timeStamps = r.getCol(0);
dataSeriesA = r.getCol(1);
dataSeriesB = r.getCol(2);
dataSeriesC = r.getCol(3);
//
// Now we have obtained the data, we can plot the chart.
//
//================================================================================
// Configure overall chart appearance.
//================================================================================
// Create an XYChart object of size 640 x 350 pixels
c = cd.XYChart(640, 350);
// Set the plotarea at (55, 55) with width 80 pixels less than chart width, and height 90 pixels
// less than chart height. Use a vertical gradient from light blue (f0f6ff) to sky blue (a0c0ff)
// as background. Set border to transparent and grid lines to white (ffffff).
c.setPlotArea(55, 55, c.getWidth() - 80, c.getHeight() - 90, c.linearGradientColor(0, 55, 0,
c.getHeight() - 35, "0xf0f6ff", "0xa0c0ff"), -1, cd.Transparent, "0xffffff", "0xffffff");
// As the data can lie outside the plotarea in a zoomed chart, we need to enable clipping.
c.setClipping();
// Add a title to the chart using 18pt Times New Roman Bold Italic font
c.addTitle(" Zooming and Scrolling with Track Line", "Times New Roman Bold Italic", 18);
// Set the axis stem to transparent
c.xAxis().setColors(cd.Transparent);
c.yAxis().setColors(cd.Transparent);
// Add axis title using 10pt Arial Bold Italic font
c.yAxis().setTitle("Ionic Temperature (C)", "Arial Bold Italic", 10);
//================================================================================
// Add data to chart
//================================================================================
//
// In this example, we represent the data by lines. You may modify the code below to use other
// layer types (areas, scatter plot, etc).
//
// Add a line layer for the lines, using a line width of 2 pixels
layer = c.addLineLayer2();
layer.setLineWidth(2);
// In this demo, we do not have too many data points. In real code, the chart may contain a lot
// of data points when fully zoomed out - much more than the number of horizontal pixels in this
// plot area. So it is a good idea to use fast line mode.
layer.setFastLineMode();
// Add up to 3 data series to a line layer, depending on whether the user has selected the data
// series.
layer.setXData(timeStamps);
if (viewer.getCustomAttr("data0CheckBox") NEQ "F") {
layer.addDataSet(dataSeriesA, "0xff3333", "Alpha Series");
}
if (viewer.getCustomAttr("data1CheckBox") NEQ "F") {
layer.addDataSet(dataSeriesB, "0x008800", "Beta Series");
}
if (viewer.getCustomAttr("data2CheckBox") NEQ "F") {
layer.addDataSet(dataSeriesC, "0x3333cc", "Gamma Series");
}
//================================================================================
// Configure axis scale and labelling
//================================================================================
// Set the x-axis as a date/time axis with the scale according to the view port x range.
viewer.syncDateAxisWithViewPort("x", c.xAxis());
//
// In this demo, the time range can be from a few years to a few days. We demonstrate how to set
// up different date/time format based on the time range.
//
// If all ticks are yearly aligned, then we use "yyyy" as the label format.
c.xAxis().setFormatCondition("align", 360 * 86400);
c.xAxis().setLabelFormat("{value|yyyy}");
// If all ticks are monthly aligned, then we use "mmm yyyy" in bold font as the first label of a
// year, and "mmm" for other labels.
c.xAxis().setFormatCondition("align", 30 * 86400);
c.xAxis().setMultiFormat(cd.StartOfYearFilter(), "<*font=bold*>{value|mmm yyyy}",
cd.AllPassFilter(), "{value|mmm}");
// If all ticks are daily algined, then we use "mmm dd<*br*>yyyy" in bold font as the first
// label of a year, and "mmm dd" in bold font as the first label of a month, and "dd" for other
// labels.
c.xAxis().setFormatCondition("align", 86400);
c.xAxis().setMultiFormat(cd.StartOfYearFilter(),
"<*block,halign=left*><*font=bold*>{value|mmm dd<*br*>yyyy}", cd.StartOfMonthFilter(),
"<*font=bold*>{value|mmm dd}");
c.xAxis().setMultiFormat2(cd.AllPassFilter(), "{value|dd}");
// For all other cases (sub-daily ticks), use "hh:nn<*br*>mmm dd" for the first label of a day,
// and "hh:nn" for other labels.
c.xAxis().setFormatCondition("else");
c.xAxis().setMultiFormat(cd.StartOfDayFilter(), "<*font=bold*>{value|hh:nn<*br*>mmm dd}",
cd.AllPassFilter(), "{value|hh:nn}");
//================================================================================
// Step 5 - Output the chart
//================================================================================
// Output the chart
chartQuery = c.makeSession(GetPageContext(), viewer.getId());
// Set the chart URL to the viewer
viewer.setImageUrl("getchart.cfm?" & chartQuery);
// Output Javascript chart model to the browser to support tracking cursor
viewer.setChartModel(c.getJsChartModel());
}
//
// This script handles both the full page request, as well as the subsequent partial updates (AJAX
// chart updates). We need to determine the type of request first before we processing it.
//
// Create the WebChartViewer object
viewer = cd.WebChartViewer(GetPageContext(), "chart1");
if (viewer.isPartialUpdateRequest()) {
// Is a partial update request. Draw the chart and perform a partial response.
drawChart(viewer);
viewer.partialUpdateChart(GetPageContext());
return;
}
//
// If the code reaches here, it is a full page request.
//
// In this exapmle, we just need to initialize the WebChartViewer and draw the chart.
initViewer(viewer);
drawChart(viewer);
</cfscript>
<!DOCTYPE html>
<html>
<cfoutput>
<head>
<title>Zooming and Scrolling with Track Line</title>
<script type="text/javascript" src="cdjcv.js"></script>
<style type="text/css">
.chartButton { font:12px Verdana; border-bottom:##000000 1px solid; padding:5px; cursor:pointer;}
.chartButtonSpacer { font:12px Verdana; border-bottom:##000000 1px solid; padding:5px;}
.chartButton:hover { box-shadow:inset 0px 0px 0px 2px ##444488; }
.chartButtonPressed { background-color: ##CCFFCC; }
</style>
</head>
<body style="margin:0px;">
<script type="text/javascript">
//
// Execute the following initialization code after the web page is loaded
//
JsChartViewer.addEventListener(window, 'load', function() {
// Update the chart when the view port has changed (eg. when the user zooms in using the mouse)
var viewer = JsChartViewer.get('#viewer.getId()#');
viewer.attachHandler("ViewPortChanged", viewer.partialUpdate);
// The Update Chart can also trigger a view port changed event to update the chart.
document.getElementById("SubmitButton").onclick = function() { viewer.raiseViewPortChangedEvent(); return false; };
// Before sending the update request to the server, we include the state of the check boxes as custom
// attributes. The server side charting code will use these attributes to decide the data sets to draw.
viewer.attachHandler("PreUpdate", function() {
var checkBoxes = ["data0CheckBox", "data1CheckBox", "data2CheckBox"];
for (var i = 0; i < checkBoxes.length; ++i)
viewer.setCustomAttr(checkBoxes[i], document.getElementById(checkBoxes[i]).checked ? "T" : "F");
});
// Draw track cursor when mouse is moving over plotarea or if the chart updates
viewer.attachHandler(["MouseMovePlotArea", "TouchStartPlotArea", "TouchMovePlotArea", "PostUpdate",
"Now", "ChartMove"], function(e) {
this.preventDefault(e); // Prevent the browser from using touch events for other actions
trackLineLegend(viewer, viewer.getPlotAreaMouseX());
});
});
//
// Draw track line with legend
//
function trackLineLegend(viewer, mouseX)
{
// Remove all previously drawn tracking object
viewer.hideObj("all");
// The chart and its plot area
var c = viewer.getChart();
var plotArea = c.getPlotArea();
// Get the data x-value that is nearest to the mouse, and find its pixel coordinate.
var xValue = c.getNearestXValue(mouseX);
var xCoor = c.getXCoor(xValue);
if (xCoor == null)
return;
// Draw a vertical track line at the x-position
viewer.drawVLine("trackLine", xCoor, plotArea.getTopY(), plotArea.getBottomY(), "black 1px dotted");
// Array to hold the legend entries
var legendEntries = [];
// Iterate through all layers to build the legend array
for (var i = 0; i < c.getLayerCount(); ++i)
{
var layer = c.getLayerByZ(i);
// The data array index of the x-value
var xIndex = layer.getXIndexOf(xValue);
// Iterate through all the data sets in the layer
for (var j = 0; j < layer.getDataSetCount(); ++j)
{
var dataSet = layer.getDataSetByZ(j);
// We are only interested in visible data sets with names, as they are required for legend entries.
var dataName = dataSet.getDataName();
var color = dataSet.getDataColor();
if ((!dataName) || (color == null))
continue;
// Build the legend entry, consist of a colored square box, the name and the data value.
var dataValue = dataSet.getValue(xIndex);
legendEntries.push("<nobr>" + viewer.htmlRect(7, 7, color) + " " + dataName + ": " +
((dataValue == null) ? "N/A" : dataValue.toPrecision(4)) + viewer.htmlRect(20, 0) + "</nobr> ");
// Draw a track dot for data points within the plot area
var yCoor = c.getYCoor(dataSet.getPosition(xIndex), dataSet.getUseYAxis());
if ((yCoor != null) && (yCoor >= plotArea.getTopY()) && (yCoor <= plotArea.getBottomY()))
{
viewer.showTextBox("dataPoint" + i + "_" + j, xCoor, yCoor, JsChartViewer.Center,
viewer.htmlRect(7, 7, color));
}
}
}
// Create the legend by joining the legend entries.
var legend = "<nobr>[" + c.xAxis().getFormattedLabel(xValue, "mm/dd/yyyy") + "]" + viewer.htmlRect(20, 0) +
"</nobr> " + legendEntries.reverse().join("");
// Display the legend on the top of the plot area
viewer.showTextBox("legend", plotArea.getLeftX(), plotArea.getTopY(), JsChartViewer.BottomLeft, legend,
"width:" + plotArea.getWidth() + "px;font:bold 11px Arial;padding:3px;-webkit-text-size-adjust:100%;");
}
//
// This method is called when the user clicks on the Pointer, Zoom In or Zoom Out buttons
//
function setMouseMode(mode)
{
var viewer = JsChartViewer.get('#viewer.getId()#');
if (mode == viewer.getMouseUsage())
mode = JsChartViewer.Default;
// Set the button color based on the selected mouse mode
document.getElementById("scrollButton").className = "chartButton" +
((mode == JsChartViewer.Scroll) ? " chartButtonPressed" : "");
document.getElementById("zoomInButton").className = "chartButton" +
((mode == JsChartViewer.ZoomIn) ? " chartButtonPressed" : "");
document.getElementById("zoomOutButton").className = "chartButton" +
((mode == JsChartViewer.ZoomOut) ? " chartButtonPressed" : "");
// Set the mouse mode
viewer.setMouseUsage(mode);
}
//
// This method is called when the user clicks on the buttons that selects the last NN days
//
function setTimeRange(duration)
{
var viewer = JsChartViewer.get('#viewer.getId()#');
// Set the view port width to represent the required duration (as a ratio to the total x-range)
viewer.setViewPortWidth(Math.min(1,
duration / (viewer.getValueAtViewPort("x", 1) - viewer.getValueAtViewPort("x", 0))));
// Set the view port left so that the view port is moved to show the latest data
viewer.setViewPortLeft(1 - viewer.getViewPortWidth());
// Trigger a view port change event
viewer.raiseViewPortChangedEvent();
}
</script>
<form method="post">
<table cellspacing="0" cellpadding="0" style="border:black 1px solid;">
<tr>
<td align="right" colspan="2" style="background:##000088; color:##ffff00; padding:0px 4px 2px 0px;">
<a style="color:##FFFF00; font:italic bold 10pt Arial; text-decoration:none" href="http://www.advsofteng.com/">
Advanced Software Engineering
</a>
</td>
</tr>
<tr valign="top">
<td style="width:130px; background:##c0c0ff;">
<div style="width:130px">
<!-- The following table is to create 3 cells for 3 buttons to control the mouse usage mode. -->
<table cellspacing="0" cellpadding="0" width="100%" border="0">
<tr>
<td class="chartButton" id="scrollButton" onclick="setMouseMode(JsChartViewer.Scroll)"
ontouchstart="this.onclick(event); event.preventDefault();">
<img src="scrollew.gif" style="vertical-align:middle" alt="Drag" /> Drag to Scroll
</td>
</tr>
<tr>
<td class="chartButton" id="zoomInButton" onclick="setMouseMode(JsChartViewer.ZoomIn)"
ontouchstart="this.onclick(event); event.preventDefault();">
<img src="zoomInIcon.gif" style="vertical-align:middle" alt="Zoom In" /> Zoom In
</td>
</tr>
<tr>
<td class="chartButton" id="zoomOutButton" onclick="setMouseMode(JsChartViewer.ZoomOut)"
ontouchstart="this.onclick(event); event.preventDefault();">
<img src="zoomOutIcon.gif" style="vertical-align:middle" alt="Zoom Out" /> Zoom Out
</td>
</tr>
<tr>
<td class="chartButtonSpacer">
<div style="padding:2px"> </div>
</td>
</tr>
<tr>
<td class="chartButton" onclick="setTimeRange(30 * 86400);"
ontouchstart="this.onclick(event); event.preventDefault();">
<img src="goto.gif" style="vertical-align:middle" alt="Last 30 days" /> Last 30 days
</td>
</tr>
<tr>
<td class="chartButton" onclick="setTimeRange(90 * 86400);"
ontouchstart="this.onclick(event); event.preventDefault();">
<img src="goto.gif" style="vertical-align:middle" alt="Last 90 days" /> Last 90 days
</td>
</tr>
<tr>
<td class="chartButton" onclick="setTimeRange(366 * 86400);"
ontouchstart="this.onclick(event); event.preventDefault();">
<img src="goto.gif" style="vertical-align:middle" alt="Last Year" /> Last Year
</td>
</tr>
<tr>
<td class="chartButton" onclick="setTimeRange(1E15);"
ontouchstart="this.onclick(event); event.preventDefault();">
<img src="goto.gif" style="vertical-align:middle" alt="All Time" /> All Time
</td>
</tr>
</table>
<div style="font:9pt Verdana; line-height:1.5; padding-top:25px">
<input id="data0CheckBox" type="checkbox" checked="checked" /> Alpha Series<br />
<input id="data1CheckBox" type="checkbox" checked="checked" /> Beta Series<br />
<input id="data2CheckBox" type="checkbox" checked="checked" /> Gamma Series<br />
</div>
<div style="font:9pt Verdana; margin-top:15px; text-align:center">
<input type="submit" id="SubmitButton" name="SubmitButton" value="Update Chart"></input>
</div>
</div>
</td>
<td style="border-left:black 1px solid; padding:10px 5px 0px 5px;">
<!-- ****** Here is the chart image ****** -->
#viewer.renderHTML(GetPageContext())#
</td>
</tr>
</table>
</form>
</body>
</cfoutput>
</html> |
