ChartDirector Ver 4.1 (PHP Edition Edition)

Coloring and Wallpaper


      

This example demonstrates different coloring schemes and background effects.

This example demonstrates how to modify the coloring scheme using BaseChart.setColor, BaseChart.setColors and BaseChart.setColors2, and apply a background image to the chart using BaseChart.setWallpaper.

Source Code Listing

[File: phpdemo/colorpie.php]
<?php
require_once("../lib/phpchartdir.php");

# The data for the pie chart
$data = array(25, 18, 15, 12, 8, 30, 35);

# The labels for the pie chart
$labels = array("Labor", "Licenses", "Taxes", "Legal", "Insurance", "Facilities",
    "Production");

# Colors of the sectors if custom coloring is used
$colors = array(0xb8bc9c, 0xecf0b9, 0x999966, 0x333366, 0xc3c3e6, 0x594330, 0xa0bdc4)
    ;

# Create a PieChart object of size 280 x 240 pixels
$c = new PieChart(280, 240);

# Set the center of the pie at (140, 120) and the radius to 80 pixels
$c->setPieSize(140, 120, 80);

# Draw the pie in 3D
$c->set3D();

# Set the coloring schema
if ($_REQUEST["img"] == "0") {
    $c->addTitle("Custom Colors");
    # set the LineColor to light gray
    $c->setColor(LineColor, 0xc0c0c0);
    # use given color array as the data colors (sector colors)
    $c->setColors2(DataColor, $colors);
} else if ($_REQUEST["img"] == "1") {
    $c->addTitle("Dark Background Colors");
    # use the standard white on black palette
    $c->setColors($whiteOnBlackPalette);
} else if ($_REQUEST["img"] == "2") {
    $c->addTitle("Wallpaper As Background");
    $c->setWallpaper(dirname(__FILE__)."/bg.png");
} else {
    $c->addTitle("Transparent Colors");
    $c->setWallpaper(dirname(__FILE__)."/bg.png");
    # use semi-transparent colors to allow the background to be seen
    $c->setColors($transparentPalette);
}

# Set the pie data and the pie labels
$c->setData($data, $labels);

# Explode the 1st sector (index = 0)
$c->setExplode(0);

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