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

# The data for the line chart
$data0 = array(42, 49, 33, 38, 64, 56, 29, 41, 44, 57, 59, 42);
$data1 = array(65, 75, 47, 34, 42, 49, 73, 62, 90, 69, 66, 78);
$data2 = array(36, 28, 25, 28, 38, 20, 22, 30, 25, 33, 30, 24);
$labels = array("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct",
    "Nov", "Dec");

# Create a XYChart object of size 600 x 400 pixels
$c = new XYChart(600, 400);

# Add a title to the chart using 18 pts Times Bold Italic font
$title = $c->addTitle("Product Line Global Revenue", "timesbi.ttf", 18);

# Tentatively set the plotarea at (50, 55) and of (chart_width - 100) x (chart_height
# - 120) pixels in size. Use a vertical gradient color from sky blue (aaccff) t0
# light blue (f9f9ff) as background. Set both horizontal and vertical grid lines to
# dotted semi-transprent black (aa000000).
$plotArea = $c->setPlotArea(50, 55, $c->getWidth() - 100, $c->getHeight() - 120,
    $c->linearGradientColor(0, 55, 0, 55 + $c->getHeight() - 120, 0xaaccff, 0xf9fcff
    ), -1, -1, $c->dashLineColor(0xaa000000, DotLine), -1);

# Add a legend box and anchored the top center at the horizontal center of the chart,
# just under the title. Use 10pts Arial Bold as font, with transparent background and
# border.
$legendBox = $c->addLegend($c->getWidth() / 2, $title->getHeight(), false,
    "arialbd.ttf", 10);
$legendBox->setAlignment(TopCenter);
$legendBox->setBackground(Transparent, Transparent);

# Set y-axis title using 10 points Arial Bold Italic font, label style to 8 points
# Arial Bold, and axis color to transparent
$c->yAxis->setTitle("Revenue (USD millions)", "arialbi.ttf", 10);
$c->yAxis->setLabelStyle("arialbd.ttf", 8);
$c->yAxis->setColors(Transparent);

# Set y-axis tick density to 30 pixels. ChartDirector auto-scaling will use this as
# the guideline when putting ticks on the y-axis.
$c->yAxis->setTickDensity(30);

# Add a line layer to the chart
$layer = $c->addLineLayer2();

# Set the line width to 3 pixels
$layer->setLineWidth(3);

# Add the three data sets to the line layer, using circles, diamands and X shapes as
# symbols
$dataSetObj = $layer->addDataSet($data0, 0xff0000, "Quantum Computer");
$dataSetObj->setDataSymbol(CircleSymbol, 9);
$dataSetObj = $layer->addDataSet($data1, 0x00ff00, "Atom Synthesizer");
$dataSetObj->setDataSymbol(DiamondSymbol, 11);
$dataSetObj = $layer->addDataSet($data2, 0xff6600, "Proton Cannon");
$dataSetObj->setDataSymbol(Cross2Shape(), 11);

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

# Convert the labels on the x-axis to a CDMLTable
$table = $c->xAxis->makeLabelTable();

# Set the default top/bottom margins of the cells to 3 pixels
$styleObj = $table->getStyle();
$styleObj->setMargin2(0, 0, 3, 3);

# Use Arial Bold as the font for the first row
$rowStyleObj = $table->getRowStyle(0);
$rowStyleObj->setFontStyle("arialbd.ttf");

#
# We can add more information to the table. In this sample code, we add the data
# series and the legend icons to the table.
#

# Add 3 more rows to the table. Set the background of the 1st and 3rd rows to light
# grey (eeeeee).
$appendRowObj = $table->appendRow();
$appendRowObj->setBackground(0xeeeeee, LineColor);
$table->appendRow();
$appendRowObj = $table->appendRow();
$appendRowObj->setBackground(0xeeeeee, LineColor);

# Put the values of the 3 data series to the cells in the 3 rows
for($i = 0; $i < count($data0); ++$i) {
    $table->setText($i, 1, $data0[$i]);
    $table->setText($i, 2, $data1[$i]);
    $table->setText($i, 3, $data2[$i]);
}

# Insert a column on the left for the legend icons. Use 5 pixels left/right margins
# and 3 pixels top/bottom margins for the cells in this column.
$insertColObj = $table->insertCol(0);
$insertColObj->setMargin2(5, 5, 3, 3);

# The top cell is set to transparent, so it is invisible
$cellObj = $table->getCell(0, 0);
$cellObj->setBackground(Transparent, Transparent);

# The other 3 cells are set to the legend icons of the 3 data series
$table->setText(0, 1, $layer->getLegendIcon(0));
$table->setText(0, 2, $layer->getLegendIcon(1));
$table->setText(0, 3, $layer->getLegendIcon(2));

# Layout legend box first, so we can get its size
$c->layoutLegend();

# Adjust the plot area size, such that the bounding box (inclusive of axes) is 2
# pixels from the left, right and bottom edge, and is just under the legend box.
$c->packPlotArea(2, $legendBox->getTopY() + $legendBox->getHeight(), $c->getWidth() -
    3, $c->getHeight() - 3);

# After determining the exact plot area position, we may adjust the legend box and
# the title positions so that they are centered relative to the plot area (instead of
# the chart)
$legendBox->setPos($plotArea->getLeftX() + ($plotArea->getWidth() -
    $legendBox->getWidth()) / 2, $legendBox->getTopY());
$title->setPos($plotArea->getLeftX() + ($plotArea->getWidth() - $title->getWidth()) /
    2, $title->getTopY());

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