[File: phpdemo/xyzoomscroll.php]
<?php
require_once("../lib/phpchartdir.php");
#
# Initialize the WebChartViewer when the page is first loaded
#
function initViewer($viewer) {
#
# This example assumes the initial chart is the full chart and we can auto-detect the full data
# range in the drawChart code. So we do not need to configure the full range here.
#
}
#
# Draw the main chart
#
function drawChart($viewer) {
#
# For simplicity, in this demo, the data arrays are filled with hard coded data. In a real
# application, you may use a database or other data source to load up the arrays, and only
# visible data (data within the view port) need to be loaded.
#
$dataX0 = array(10, 15, 6, -12, 14, -8, 13, -3, 16, 12, 10.5, -7, 3, -10, -5, 2, 5);
$dataY0 = array(130, 150, 80, 110, -110, -105, -130, -15, -170, 125, 125, 60, 25, 150, 150, 15,
120);
$dataX1 = array(6, 7, -4, 3.5, 7, 8, -9, -10, -12, 11, 8, -3, -2, 8, 4, -15, 15);
$dataY1 = array(65, -40, -40, 45, -70, -80, 80, 10, -100, 105, 60, 50, 20, 170, -25, 50, 75);
$dataX2 = array(-10, -12, 11, 8, 6, 12, -4, 3.5, 7, 8, -9, 3, -13, 16, -7.5, -10, -15);
$dataY2 = array(65, -80, -40, 45, -70, -80, 80, 90, -100, 105, 60, -75, -150, -40, 120, -50, -30
);
# Create an XYChart object 500 x 480 pixels in size, with light blue (c0c0ff) background
$c = new XYChart(500, 480, 0xc0c0ff);
# Set the plotarea at (50, 40) and of size 400 x 400 pixels. Use light grey (c0c0c0) horizontal
# and vertical grid lines. Set 4 quadrant coloring, where the colors alternate between lighter
# and deeper grey (dddddd/eeeeee).
$c->setPlotArea(50, 40, 400, 400, -1, -1, -1, 0xc0c0c0, 0xc0c0c0)->set4QBgColor(0xdddddd,
0xeeeeee, 0xdddddd, 0xeeeeee, 0x000000);
# As the data can lie outside the plotarea in a zoomed chart, we need enable clipping
$c->setClipping();
# Set 4 quadrant mode, with both x and y axes symetrical around the origin
$c->setAxisAtOrigin(XYAxisAtOrigin, XAxisSymmetric + YAxisSymmetric);
# Add a legend box at (450, 40) (top right corner of the chart) with vertical layout and 8pt
# Arial Bold font. Set the background color to semi-transparent grey (40dddddd).
$legendBox = $c->addLegend(450, 40, true, "Arial Bold", 8);
$legendBox->setAlignment(TopRight);
$legendBox->setBackground(0x40dddddd);
# Add titles to axes
$c->xAxis->setTitle("Alpha Index");
$c->yAxis->setTitle("Beta Index");
# Set axes line width to 2 pixels
$c->xAxis->setWidth(2);
$c->yAxis->setWidth(2);
# The default ChartDirector settings has a denser y-axis grid spacing and less-dense x-axis grid
# spacing. In this demo, we want the tick spacing to be symmetrical. We use around 40 pixels
# between major ticks and 20 pixels between minor ticks.
$c->xAxis->setTickDensity(40, 20);
$c->yAxis->setTickDensity(40, 20);
#
# In this example, we represent the data by scatter points. You may modify the code below to use
# other layer types (lines, areas, etc).
#
# Add scatter layer, using 11 pixels red (ff33333) X shape symbols
$c->addScatterLayer($dataX0, $dataY0, "Group A", Cross2Shape(), 11, 0xff3333);
# Add scatter layer, using 11 pixels green (33ff33) circle symbols
$c->addScatterLayer($dataX1, $dataY1, "Group B", CircleShape, 11, 0x33ff33);
# Add scatter layer, using 11 pixels blue (3333ff) triangle symbols
$c->addScatterLayer($dataX2, $dataY2, "Group C", TriangleSymbol, 11, 0x3333ff);
#
# In this example, we have not explicitly configured the full x and y range. In this case, the
# first time syncLinearAxisWithViewPort is called, ChartDirector will auto-scale the axis and
# assume the resulting range is the full range. In subsequent calls, ChartDirector will set the
# axis range based on the view port and the full range.
#
$viewer->syncLinearAxisWithViewPort("x", $c->xAxis);
$viewer->syncLinearAxisWithViewPort("y", $c->yAxis);
# Output the chart
$viewer->setChart($c, SVG);
# Include tool tip for the chart
$viewer->setImageMap($c->getHTMLImageMap("", "",
"title='[{dataSetName}] Alpha = {x|G}, Beta = {value|G}'"));
}
#
# Draw the thumbnail chart in the WebViewPortControl
#
function drawFullChart($vp, $viewer) {
#
# For simplicity, in this demo, the data arrays are filled with hard coded data. In a real
# application, you may use a database or other data source to load up the arrays. As this is a
# small thumbnail chart, complete data may not be needed. For exmaple, if there are a million
# points, a random sample may already be sufficient for the thumbnail chart.
#
$dataX0 = array(10, 15, 6, -12, 14, -8, 13, -3, 16, 12, 10.5, -7, 3, -10, -5, 2, 5);
$dataY0 = array(130, 150, 80, 110, -110, -105, -130, -15, -170, 125, 125, 60, 25, 150, 150, 15,
120);
$dataX1 = array(6, 7, -4, 3.5, 7, 8, -9, -10, -12, 11, 8, -3, -2, 8, 4, -15, 15);
$dataY1 = array(65, -40, -40, 45, -70, -80, 80, 10, -100, 105, 60, 50, 20, 170, -25, 50, 75);
$dataX2 = array(-10, -12, 11, 8, 6, 12, -4, 3.5, 7, 8, -9, 3, -13, 16, -7.5, -10, -15);
$dataY2 = array(65, -80, -40, 45, -70, -80, 80, 90, -100, 105, 60, -75, -150, -40, 120, -50, -30
);
# Create an XYChart object 120 x 120 pixels in size
$c = new XYChart(120, 120);
# Set the plotarea to cover the entire chart and with no grid lines. Set 4 quadrant coloring,
# where the colors alternate between lighter and deeper grey (d8d8d8/eeeeee).
$c->setPlotArea(0, 0, $c->getWidth() - 1, $c->getHeight() - 1, -1, -1, -1, Transparent
)->set4QBgColor(0xd8d8d8, 0xeeeeee, 0xd8d8d8, 0xeeeeee, 0x000000);
# Set 4 quadrant mode, with both x and y axes symetrical around the origin
$c->setAxisAtOrigin(XYAxisAtOrigin, XAxisSymmetric + YAxisSymmetric);
# The x and y axis scales reflect the full range of the view port
$c->xAxis->setLinearScale($viewer->getValueAtViewPort("x", 0), $viewer->getValueAtViewPort("x",
1), NoValue);
$c->yAxis->setLinearScale($viewer->getValueAtViewPort("y", 0), $viewer->getValueAtViewPort("y",
1), NoValue);
# Add scatter layer, using 5 pixels red (ff33333) X shape symbols
$c->addScatterLayer($dataX0, $dataY0, "Group A", Cross2Shape(), 5, 0xff3333);
# Add scatter layer, using 5 pixels green (33ff33) circle symbols
$c->addScatterLayer($dataX1, $dataY1, "Group B", CircleShape, 5, 0x33ff33);
# Add scatter layer, using 5 pixels blue (3333ff) triangle symbols
$c->addScatterLayer($dataX2, $dataY2, "Group C", TriangleSymbol, 5, 0x3333ff);
# Output the chart
$vp->setChart($c, SVG);
}
#
# 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
$viewer = new WebChartViewer("chart1");
if ($viewer->isPartialUpdateRequest()) {
# Is a partial update request. Draw the chart and perform a partial response.
drawChart($viewer);
print($viewer->partialUpdateChart());
exit();
}
#
# If the code reaches here, it is a full page request.
#
# Initialize the WebChartViewer and draw the chart.
initViewer($viewer);
drawChart($viewer);
# Draw a thumbnail chart representing the full range in the WebViewPortControl
$viewPortCtrl = new WebViewPortControl("fullchart1");
drawFullChart($viewPortCtrl, $viewer);
?>
<!DOCTYPE html>
<html>
<head>
<title>XY Zooming and Scrolling</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('<?php echo $viewer->getId() ?>');
viewer.attachHandler("ViewPortChanged", viewer.partialUpdate);
// Set the zoom and scroll mode to bi-directional
viewer.setScrollDirection(JsChartViewer.HorizontalVertical);
viewer.setZoomDirection(JsChartViewer.HorizontalVertical);
// Set the initial mouse usage to "zoom in"
setMouseMode(JsChartViewer.ZoomIn);
// Initialize the view port control
var viewPortCtrl = JsViewPortControl.get('<?php echo $viewPortCtrl->getId() ?>');
// Set the mask color to semi-transparent black
viewPortCtrl.setViewPortExternalColor("#80000000");
// Set the selection rectangle border to white
viewPortCtrl.setSelectionBorderStyle("1px solid white");
// Bind the view port control to the chart viewer
viewPortCtrl.setViewer(viewer);
});
//
// This method is called when the user clicks on the Pointer, Zoom In or Zoom Out buttons
//
function setMouseMode(mode)
{
var viewer = JsChartViewer.get('<?php echo $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);
}
</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:#e0e0e0;">
<!-- The following table is to create 3 cells for 3 buttons to control the mouse usage mode. -->
<table style="width:100%; padding:0px; border:0px; border-spacing:0px;">
<tr>
<td class="chartButton" id="scrollButton" onclick="setMouseMode(JsChartViewer.Scroll)"
ontouchstart="this.onclick(event); event.preventDefault();">
<img src="scrollnesw.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>
</table>
<br /><br /><br /><br /><br />
<div style="text-align:center;">
<!-- ****** Here is the view port control ****** -->
<?php echo $viewPortCtrl->renderHTML() ?>
</div>
</td>
<td style="border-left: black 1px solid; background-color: #c0c0ff; padding:5px">
<!-- ****** Here is the chart image ****** -->
<?php echo $viewer->renderHTML() ?>
</td>
</tr>
</table>
</form>
</body>
</html>
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