ChartDirector 6.1 (PHP Edition)

Black Horizontal Bar Meters


          

This example demonstrates horizontal bar meters in a black coloring scheme, and with bars in various shading styles.

Source Code Listing

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

# This script can draw different charts depending on the chartIndex
$chartIndex = (int)($_REQUEST["img"]);

# The value to display on the meter
$value = 75.35;

# Create a LinearMeter object of size 260 x 80 pixels with black background and rounded corners
$m = new LinearMeter(260, 80, 0x000000);
$m->setRoundedFrame(Transparent);

# Set the default text and line colors to white (0xffffff)
$m->setColor(TextColor, 0xffffff);
$m->setColor(LineColor, 0xffffff);

# Set the scale region top-left corner at (15, 24), with size of 228 x 20 pixels. The scale labels
# are located on the top (implies horizontal meter)
$m->setMeter(15, 24, 228, 20, Top);

# Set meter scale from 0 - 100, with a tick every 10 units
$m->setScale(0, 100, 10);

# Demostrate different types of color scales
$smoothColorScale = array(0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100, 0xff0000);
$stepColorScale = array(0, 0x00dd00, 50, 0xffff00, 80, 0xff3333, 100);
$highLowColorScale = array(0, 0x0000ff, 40, Transparent, 60, Transparent, 100, 0xff0000);
$highColorScale = array(70, Transparent, 100, 0xff0000);

if ($chartIndex == 0) {
    # Add a blue (0x0088ff) bar from 0 to value with glass effect and 4 pixel rounded corners
    $m->addBar(0, $value, 0x0088ff, glassEffect(NormalGlare, Top), 4);
    # Add a 5-pixel thick smooth color scale at y = 48 (below the meter scale)
    $m->addColorScale($smoothColorScale, 48, 5);
} else if ($chartIndex == 1) {
    # Add a purple (0xaa66ff) bar from 0 to value
    $m->addBar(0, $value, 0xaa66ff);
    # Add a 4 pixel thick purple (0x880088) frame
    $m->setThickFrame(4, 0x880088);
    # Add a 5-pixel thick high/low color scale at y = 48 (below the meter scale)
    $m->addColorScale($highLowColorScale, 48, 5);
} else if ($chartIndex == 2) {
     # Add a green (0x00ee00) bar from 0 to value with right side soft lighting effect and 4 pixel
     # rounded corners
    $m->addBar(0, $value, 0x00ee00, softLighting(Right), 4);
    # Add a 5-pixel thick step color scale at y = 48 (below the meter scale)
    $m->addColorScale($stepColorScale, 48, 5);
} else if ($chartIndex == 3) {
      # Add an orange (0xff8800) bar from 0 to value with cylinder lighting effect
    $m->addBar(0, $value, 0xff8800, cylinderEffect());
    # Add a 4 pixel thick brown (0xbb5500) frame
    $m->setThickFrame(4, 0xbb5500);
    # Add a 5-pixel thick high only color scale at y = 48 (below the meter scale)
    $m->addColorScale($highColorScale, 48, 5);
} else if ($chartIndex == 4) {
     # Add a magneta (0xdd00dd) bar from 0 to value with top side soft lighting effect and 4 pixel
     # rounded corners
    $m->addBar(0, $value, 0xdd00dd, softLighting(Top), 4);
    # Add a 5-pixel thick smooth color scale at y = 48 (below the meter scale)
    $m->addColorScale($smoothColorScale, 48, 5);
} else {
     # Add a red (0xff0000) bar from 0 to value with bar lighting effect
    $m->addBar(0, $value, 0xff0000, barLighting());
    # Add a 4 pixel thick red (0xaa0000) frame
    $m->setThickFrame(4, 0xaa0000);
       # Add a 5-pixel thick high/low color scale at y = 48 (below the meter scale)
    $m->addColorScale($highLowColorScale, 48, 5);
}

# Add a label left aligned to (12, 65) using 8pt Arial Bold font
$m->addText(12, 65, "Temperature C", "arialbd.ttf", 8, TextColor, Left);

# Add a text box right aligned to (243, 65). Display the value using white (0xffffff) 8pt Arial Bold
# font on a black (0x000000) background with depressed dark grey (0x333333) rounded border.
$t = $m->addText(243, 65, $m->formatValue($value, "2"), "arial.ttf", 8, 0xffffff, Right);
$t->setBackground(0x000000, 0x333333, -1);
$t->setRoundedCorners(3);

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