<?php
require_once("../lib/phpchartdir.php");

#
# Initialize the WebChartViewer when the page is first loaded
#
function initViewer($viewer) {
    # The full x-axis range is from Jan 1, 2020 to Jan 1, 2021
    $startDate = chartTime(2020, 1, 1);
    $endDate = chartTime(2021, 1, 1);
    $viewer->setFullRange("x", $startDate, $endDate);

    # Initialize the view port to show the last 61 days (out of 366 days)
    $viewer->setViewPortWidth(61 / 366.0);
    $viewer->setViewPortLeft(1 - $viewer->getViewPortWidth());

    # Set the maximum zoom to 10 days (out of 366 days)
    $viewer->setZoomInWidthLimit(10.0 / 366.0);
}

#
# Create a random table for demo purpose.
#
function getRandomTable() {
    $r = new RanTable(127, 11, 367);
    $r->setDateCol(0, chartTime(2020, 1, 1), 86400);
	 
	# 10 rows of cells
	for ($i = 1; $i <= 10; ++$i)
		$r->setCol($i, 0, 100);
    return $r;
}

#
# Draw the chart
#
function drawChart($viewer) {
    # Determine the visible x-axis range
    $viewPortStartDate = $viewer->getValueAtViewPort("x", $viewer->getViewPortLeft());
    $viewPortEndDate = $viewer->getValueAtViewPort("x", $viewer->getViewPortRight());

    # 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, $viewPortStartDate - 86400, $viewPortEndDate + 86400);

    # The selected data from the random data table
    $timeStamps = $r->getCol(0);
	
	# 10 rows of cells
	$yGrid = array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10); 
	
	# In the discrete heat map, the cell data are supplied in a single array
	$data = array();
	for ($i = 1; $i <=10; ++$i) {	
		$data = array_merge($data, $r->getCol($i));
		# The number of cells is one less than the number of grids. 
		array_pop($data);
	}
	
    #
    # Now we have obtained the data, we can plot the chart.
    #

    #================================================================================
    # Configure overall chart appearance.
    #================================================================================

    # Create an XYChart object of size 640 x 400 pixels
    $c = new XYChart(640, 400);

    # 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, 25, $c->getWidth() - 80, $c->getHeight() - 90, $c->linearGradientColor(0,
        55, 0, $c->getHeight() - 35, 0xf0f6ff, 0xa0c0ff), -1, 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 box using dark grey (0x333333) 18pt Arial Bold font
    $c->addTitle("   Zooming and Scrolling with Viewport Control", "Arial Bold", 15, 0x333333);
	
    if ($viewer->isAttachmentRequest()) {
        $b = $c->addLegend(55, 28, false, "Arial Bold", 10);
        $b->setBackground(Transparent, Transparent);
        $b->setLineStyleKey();
    }

    # Set the x and y axis stems to transparent and the label font to 10pt Arial
    $c->xAxis->setColors(Transparent);
    $c->yAxis->setColors(Transparent);
    $c->xAxis->setLabelStyle("Arial", 10);
    $c->yAxis->setLabelStyle("Arial", 10);

    # Add axis title using 10pt Arial Bold font
    $c->yAxis->setTitle("Ionic Temperature (C) ", "Arial Bold", 10);

    #================================================================================
    # Add data to chart
    #================================================================================

	$layer = $c->addDiscreteHeatMapLayer2($timeStamps, $yGrid, $data);
	$layer->setBorderColor(SameAsMainColor);

    #================================================================================
    # 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);
	
    # For the automatic y-axis labels, set the minimum spacing to 30 pixels.
    $c->yAxis->setTickDensity(30);

    #
    # 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(StartOfYearFilter(), "<*font=bold*>{value|mmm<*br*>yyyy}",
        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(StartOfYearFilter(),
        "<*block,halign=left*><*font=bold*>{value|mmm dd<*br*>yyyy}", StartOfMonthFilter(),
        "<*font=bold*>{value|mmm dd}");
    $c->xAxis->setMultiFormat2(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(StartOfDayFilter(), "<*font=bold*>{value|hh:nn<*br*>mmm dd}",
        AllPassFilter(), "{value|hh:nn}");

    #================================================================================
    # Step 5 - Output the chart
    #================================================================================

    if ($viewer->isAttachmentRequest()) {
        # Output as PDF attachment
        $viewer->streamAttachment($c->makeChart2(PDF), "viewportcontroldemo.pdf");
        exit();
    } else {
        # Output the chart
        $viewer->setChart($c, SVG);
    }
}

function drawFullChart($vp, $viewer) {
    # We need to draw a small thumbnail chart for the full data range. The simplest method is to
    # simply get the full data to draw the chart. If the full data are very large (eg. millions of
    # points), for such a small thumbnail chart, it is often acceptable to just retreive a small
    # sample of the data.
    #
    # In this example, there are only around 5500 points for the 3 data series. This amount is not
    # large to ChartDirector, so we simply pass all the data to ChartDirector.
    $r = getRandomTable();

	# The selected data from the random data table
    $timeStamps = $r->getCol(0);
	
	# 10 rows of cells
	$yGrid = array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10); 
	
	# In the discrete heat map, the cell data are supplied in a single array
	$data = array();
	for ($i = 1; $i <=10; ++$i) {	
		$data = array_merge($data, $r->getCol($i));
		# The number of cells is one less than the number of grids. 
		array_pop($data);
	}
	
    # Create an XYChart object of size 640 x 80 pixels
    $c = new XYChart(640, 80);

    # Set the plotarea with the same horizontal position as that in the main chart for alignment.
    $c->setPlotArea(55, 0, $c->getWidth() - 80, $c->getHeight() - 20, 0xc0d8ff, -1, 0x888888,
        Transparent, 0xffffff);

    # Set the x axis stem to transparent and the label font to 10pt Arial
    $c->xAxis->setColors(Transparent);
    $c->xAxis->setLabelStyle("Arial", 10);

    # Use setLabelAlignment to put the label at the right side of the tick.
    $c->xAxis->setLabelAlignment(1);

    # Set the y axis stem and labels to transparent (that is, hide the labels)
    $c->yAxis->setColors(Transparent, Transparent);

    # Add a discrete heat map layer for the lines with fast line mode enabled
	$layer = $c->addDiscreteHeatMapLayer2($timeStamps, $yGrid, $data);
	$layer->setBorderColor(SameAsMainColor);

    # The x axis scales should reflect the full range of the view port
    $c->xAxis->setDateScale($viewer->getValueAtViewPort("x", 0), $viewer->getValueAtViewPort("x", 1)
        );

    # For the automatic x-axis labels, set the minimum spacing to 75 pixels.
    $c->xAxis->setTickDensity(75);

    # For the auto-scaled y-axis, as we hide the labels, we can disable axis rounding. This can make
    # the axis scale fit the data tighter.
    $c->yAxis->setRounding(false, false);

    # 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);

# Create the WebViewPortControl object
$viewPortCtrl = new WebViewPortControl("fullchart1");
drawFullChart($viewPortCtrl, $viewer);
?>

<!DOCTYPE html>
<html>
<head>
    <title>Zooming and Scrolling with Viewport Control</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);

    // Initialize the navigation pad
    JsViewPortControl.get('<?php echo $viewPortCtrl->getId() ?>').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);
}

//
// This method is called when the user clicks on the buttons that selects the last NN days
//
function setTimeRange(duration)
{
    var viewer = JsChartViewer.get('<?php echo $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" id="ZoomScrollTrack" runat="server">
<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 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="scrollew.gif" style="vertical-align:middle" alt="Drag" />&nbsp;&nbsp;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" />&nbsp;&nbsp;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" />&nbsp;&nbsp;Zoom Out
                    </td>
                </tr>
                <tr>
                    <td class="chartButtonSpacer">
                        <div style="padding:2px">&nbsp;</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" />&nbsp;&nbsp;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" />&nbsp;&nbsp;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" />&nbsp;&nbsp;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" />&nbsp;&nbsp;All Time
                    </td>
                </tr>
            </table>
            <br />
            <br />
            <br />
            <br />
            <div style="text-align:center;">
                <input type="button" value="Download PDF" style="font:13px Arial; width:124px;"
                    onclick="JsChartViewer.get('<?php echo $viewer->getId() ?>').partialUpdateAsAttachment();" />
            </div>
        </div>
        </td>
        <td style="border-left:black 1px solid; padding:10px 5px 10px 5px;">
            <!-- ****** Here is the chart image ****** -->
            <?php echo $viewer->renderHTML() ?><br />
            <!-- ****** Here is the view port control ****** -->
            <?php echo $viewPortCtrl->renderHTML() ?>
        </td>
    </tr>
</table>
</form>
</body>
</html>