ChartDirector Ver 5.0 (PHP Edition)

Background and Wallpaper

This example demonstrates some of the background effects supported by ChartDirector.
ChartDirector supports using an image file as the wallpaper of the chart image background with BaseChart.setWallpaper, and as the plot area background with PlotArea.setBackground2.
In addition to wallpapers, ChartDirector supports alternating plot area background colors using PlotArea.setBackground and PlotArea.setAltBgColor.
You can switch the default colors to using a dark background with white lines and text in one step by changing the color palette to a whiteOnBlackPalette using BaseChart.setColors.

Source Code Listing

[File: phpdemo/background.php]

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

    # The data for the chart
    $data = array(85, 156, 179.5, 211, 123);
    $labels = array("Mon", "Tue", "Wed", "Thu", "Fri");

    # Create a XYChart object of size 270 x 270 pixels
    $c = new XYChart(270, 270);

    # Set the plot area at (40, 32) and of size 200 x 200 pixels
    $plotarea = $c->setPlotArea(40, 32, 200, 200);

    # Set the background style based on the input parameter
    if ($_REQUEST["img"] == "0") {
        # Has wallpaper image
        $c->setWallpaper(dirname(__FILE__)."/tile.gif");
    } else if ($_REQUEST["img"] == "1") {
        # Use a background image as the plot area background
        $plotarea->setBackground2(dirname(__FILE__)."/bg.png");
    } else if ($_REQUEST["img"] == "2") {
        # Use white (0xffffff) and grey (0xe0e0e0) as two alternate plotarea background
        # colors
        $plotarea->setBackground(0xffffff, 0xe0e0e0);
    } else {
        # Use a dark background palette
        $c->setColors($whiteOnBlackPalette);
    }

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

    # Add a color bar layer using the given data. Use a 1 pixel 3D border for the bars.
    $barLayerObj = $c->addBarLayer3($data);
    $barLayerObj->setBorderColor(-1, 1);

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

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