H-Linear Meter Orientation

perldemo\hlinearmeterorientation.pl
#!/usr/bin/perl

# The ChartDirector for Perl module is assumed to be in "../lib"
use File::Basename;
use lib (dirname($0)."/../lib") =~ /(.*)/;

use perlchartdir;

sub createChart
{
    my $chartIndex = shift;

    # The value to display on the meter
    my $value = 74.25;

    # Create a LinearMeter object of size 250 x 75 pixels with very light grey (0xeeeeee) backgruond
    # and a light grey (0xccccccc) 3-pixel thick rounded frame
    my $m = new LinearMeter(250, 75, 0xeeeeee, 0xcccccc);
    $m->setRoundedFrame($perlchartdir::Transparent);
    $m->setThickFrame(3);

    # This example demonstrates putting the text labels at the top or bottom. This is by setting the
    # label alignment, scale position and label position.
    my $alignment = [$perlchartdir::Top, $perlchartdir::Top, $perlchartdir::Bottom,
        $perlchartdir::Bottom];
    my $meterYPos = [23, 23, 34, 34];
    my $labelYPos = [61, 61, 15, 15];

    # Set the scale region
    $m->setMeter(14, $meterYPos->[$chartIndex], 218, 20, $alignment->[$chartIndex]);

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

    # Add a smooth color scale at the default position
    my $smoothColorScale = [0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000];
    $m->addColorScale($smoothColorScale);

    # Add a blue (0x0000cc) pointer at the specified value
    $m->addPointer($value, 0x0000cc);

    #
    # In this example, some charts have the "Temperauture" label on the left side and the value
    # readout on the right side, and some charts have the reverse
    #

    if ($chartIndex % 2 == 0) {
        # Add a label on the left side using 8pt Arial Bold font
        $m->addText(10, $labelYPos->[$chartIndex], "Temperature C", "Arial Bold", 8,
            $perlchartdir::TextColor, $perlchartdir::Left);

        # Add a text box on the right side. Display the value using white (0xffffff) 8pt Arial Bold
        # font on a black (0x000000) background with depressed rounded border.
        my $t = $m->addText(235, $labelYPos->[$chartIndex], $m->formatValue($value, "2"),
            "Arial Bold", 8, 0xffffff, $perlchartdir::Right);
        $t->setBackground(0x000000, 0x000000, -1);
        $t->setRoundedCorners(3);
    } else {
        # Add a label on the right side using 8pt Arial Bold font
        $m->addText(237, $labelYPos->[$chartIndex], "Temperature C", "Arial Bold", 8,
            $perlchartdir::TextColor, $perlchartdir::Right);

        # Add a text box on the left side. Display the value using white (0xffffff) 8pt Arial Bold
        # font on a black (0x000000) background with depressed rounded border.
        my $t = $m->addText(11, $labelYPos->[$chartIndex], $m->formatValue($value, "2"),
            "Arial Bold", 8, 0xffffff, $perlchartdir::Left);
        $t->setBackground(0x000000, 0x000000, -1);
        $t->setRoundedCorners(3);
    }

    # Output the chart
    $m->makeChart("hlinearmeterorientation$chartIndex.png");
}

createChart(0);
createChart(1);
createChart(2);
createChart(3);