<?php
require_once("/usr/local/lib/php/20100525/phpchartdir.php");

# The data for the area chart
$data = array(30, 28, 40, 55, 75, 68, 54, 60, 50, 62, 75, 65, 75, 89, 60, 55, 53, 35,
    50, 66, 56, 48, 52, 65, 62);

# The labels for the area chart
$labels = array("0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12",
    "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24");

# Create a XYChart object of size 600 x 360 pixels, with a brushed silver background,
# 1 pixel 3D border effect, rounded corners and soft drop shadow.
$c = new XYChart(600, 360, brushedSilverColor(), Transparent, 1);
$c->setRoundedFrame();
$c->setDropShadow();

#Set directory for loading images to current script directory
#Need when running under Microsoft IIS
$c->setSearchPath(dirname(__FILE__));

# Add a title box to the chart using 18 pts Times Bold Italic font.
$title = $c->addTitle(
    "<*block,valign=absmiddle*><*img=star.png*><*img=star.png*> Performance ".
    "Enhancer <*img=star.png*><*img=star.png*><*/*>", "timesbi.ttf", 18);

#
# Use a text box with a depressed 3D border to create the inner depressed region
#

# The width of the frame border
$frameWidth = 5;

# Set the depressed region position
$contentBox = $c->addText($frameWidth, $title->getHeight(), "");
$drawAreaObj = $c->getDrawArea();
$drawAreaObj = $c->getDrawArea();
$contentBox->setSize($drawAreaObj->getWidth() - 1 - $frameWidth * 2,
    $drawAreaObj->getHeight() - $title->getHeight() - $frameWidth - 1);

# Use -1 as the rasied effect to create a depressed region
$contentBox->setBackground(Transparent, Transparent, -1);

# Set rounded corners, and put the text box at the back of the chart
$contentBox->setRoundedCorners(10);
$contentBox->setZOrder(ChartBackZ);

# Tentatively set the plotarea to 50 pixels from the left depressed edge, and 25
# pixels under the top depressed edge. Set the width to 75 pixels less than the
# depressed region width, and the height to 75 pixels less than the depressed region
# height. Use white (ffffff) background, transparent border, and grey (cccccc)
# horizontal and vertical grid lines.
$plotArea = $c->setPlotArea(50 + $contentBox->getLeftX(), $contentBox->getTopY() +
    25, $contentBox->getWidth() - 75, $contentBox->getHeight() - 75, 0xffffff, -1,
    -1, 0xcccccc, -1);

# Add a title to the y axis
$c->yAxis->setTitle("Energy Concentration (KJ per liter)");

# Set the labels on the x axis.
$c->xAxis->setLabels($labels);

# Display 1 out of 3 labels on the x-axis.
$c->xAxis->setLabelStep(3);

# Add a title to the x axis using CDML
$c->xAxis->setTitle(
    "<*block,valign=absmiddle*><*img=clock.png*>  Elapsed Time (hour)<*/*>");

# Set the axes width to 2 pixels
$c->xAxis->setWidth(2);
$c->yAxis->setWidth(2);

# Add an area layer to the chart using a gradient color that changes vertically from
# semi-transparent red (60ff0000) to semi-transparent white (60ffffff)
$c->addAreaLayer($data, $c->linearGradientColor(0, $contentBox->getTopY() + 20, 0,
    $contentBox->getTopY() + $contentBox->getHeight() - 50, 0x60ff0000, 0x60ffffff));

# Adjust the plot area size, such that the bounding box (inclusive of axes) is 15
# pixels from the left depressed edge, 25 pixels below the top depressed edge, 25
# pixels from the right depressed edge, and 15 pixels above the bottom depressed
# edge.
$c->packPlotArea($contentBox->getLeftX() + 15, $contentBox->getTopY() + 25,
    $contentBox->getLeftX() + $contentBox->getWidth() - 25, $contentBox->getTopY() +
    $contentBox->getHeight() - 15);

# Add a custom CDML text with the bottom right corner is anchored to the bootom right
# corner of the plot area, with 5 pixels margin.
$textBoxObj = $c->addText($plotArea->getLeftX() + $plotArea->getWidth() - 5,
    $plotArea->getTopY() + $plotArea->getHeight() - 5,
    "<*block,valign=absmiddle*><*img=small_molecule.png*> <*block*>".
    "<*font=timesbi.ttf,size=10,color=804040*>Molecular\nEngineering<*/*>");
$textBoxObj->setAlignment(BottomRight);

# Output the chart
header("Content-type: image/jpeg");
print($c->makeChart2(JPG));
?>
