This example demonstrates the gradient coloring features of ChartDirector. Gradient colors can be created using BaseChart.gradientColor and BaseChart.gradientColor2. ChartDirector comes with several pre-defined gradient colors that have metallic look and feel. In this example, the goldGradient color is used for the chart background, while the redMetalGradient color is used for the title background.

[File: phpdemo/goldpie.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"); #Create a PieChart object of size 300 x 230 pixels $c = new PieChart(300, 230); #Set the background color of the chart to gold (goldGradient). Use a 2 pixel 3D #border. $c->setBackground($c->gradientColor($goldGradient), -1, 2); #Set the center of the pie at (150, 115) and the radius to 80 pixels $c->setPieSize(150, 115, 80); #Add a title box using 10 point Arial Bold font. Set the background color to red #metallic (redMetalGradient). Use a 1 pixel 3D border. $titleObj = $c->addTitle("Pie Chart Coloring Demo", "arialbd.ttf", 10); $titleObj->setBackground($c->gradientColor($redMetalGradient), -1, 1); #Draw the pie in 3D $c->set3D(); #Set the pie data and the pie labels $c->setData($data, $labels); #output the chart header("Content-type: image/png"); print($c->makeChart2(PNG)); ?>