#!/usr/bin/perl

# In the sample code, 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;

    # The background and border colors of the meters
    my $bgColor = [0xbbddff, 0xccffcc, 0xffccff, 0xffffaa, 0xffdddd, 0xeeeeee];
    my $borderColor = [0x000088, 0x006600, 0x6600aa, 0xee6600, 0x880000, 0x666666];

    # Create a LinearMeter object of size 70 x 260 pixels with a 3-pixel thick rounded frame
    my $m = new LinearMeter(70, 260, $bgColor->[$chartIndex], $borderColor->[$chartIndex]);
    $m->setRoundedFrame($perlchartdir::Transparent);
    $m->setThickFrame(3);

    # Set the scale region top-left corner at (28, 30), with size of 20 x 200 pixels. The scale
    # labels are located on the left (default - implies vertical meter)
    $m->setMeter(28, 30, 20, 200);

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

    # Demostrate different types of color scales and putting them at different positions
    my $smoothColorScale = [0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000];
    my $stepColorScale = [0, 0x33ff33, 50, 0xffff33, 80, 0xff3333, 100];
    my $highLowColorScale = [0, 0x6666ff, 70, $perlchartdir::Transparent, 100, 0xff0000];

    if ($chartIndex == 0) {
        # Add the smooth color scale at the default position
        $m->addColorScale($smoothColorScale);
    } elsif ($chartIndex == 1) {
        # Add the step color scale at the default position
        $m->addColorScale($stepColorScale);
    } elsif ($chartIndex == 2) {
        # Add the high low scale at the default position
        $m->addColorScale($highLowColorScale);
    } elsif ($chartIndex == 3) {
        # Add the smooth color scale starting at x = 28 (left of scale) with zero width and ending
        # at x = 28 with 20 pixels width
        $m->addColorScale($smoothColorScale, 28, 0, 28, 20);
    } elsif ($chartIndex == 4) {
        # Add the smooth color scale starting at x = 38 (center of scale) with zero width and ending
        # at x = 28 with 20 pixels width
        $m->addColorScale($smoothColorScale, 38, 0, 28, 20);
    } else {
        # Add the smooth color scale starting at x = 48 (right of scale) with zero width and ending
        # at x = 28 with 20 pixels width
        $m->addColorScale($smoothColorScale, 48, 0, 28, 20);
    }

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

    # Add a title using white (0xffffff) 8pt Arial Bold font with a border color background
    $m->addTitle("Temp C", "arialbd.ttf", 8, 0xffffff)->setBackground($borderColor->[$chartIndex]);

    # Add a bottom title using white (0xffffff) 8pt Arial Bold font with a border color background
    # to display the value
    $m->addTitle2($perlchartdir::Bottom, $m->formatValue($value, "2"), "arialbd.ttf", 8, 0xffffff
        )->setBackground($borderColor->[$chartIndex]);

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

createChart(0);
createChart(1);
createChart(2);
createChart(3);
createChart(4);
createChart(5);

#!/usr/bin/perl

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

use perlchartdir;

# Get HTTP query parameters
use CGI;
my $query = new CGI;

# This script can draw different charts depending on the chartIndex
$chartIndex = int($query->param("img"));

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

# The background and border colors of the meters
my $bgColor = [0xbbddff, 0xccffcc, 0xffccff, 0xffffaa, 0xffdddd, 0xeeeeee];
my $borderColor = [0x000088, 0x006600, 0x6600aa, 0xee6600, 0x880000, 0x666666];

# Create a LinearMeter object of size 70 x 260 pixels with a 3-pixel thick rounded frame
my $m = new LinearMeter(70, 260, $bgColor->[$chartIndex], $borderColor->[$chartIndex]);
$m->setRoundedFrame($perlchartdir::Transparent);
$m->setThickFrame(3);

# Set the scale region top-left corner at (28, 30), with size of 20 x 200 pixels. The scale labels
# are located on the left (default - implies vertical meter)
$m->setMeter(28, 30, 20, 200);

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

# Demostrate different types of color scales and putting them at different positions
my $smoothColorScale = [0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000];
my $stepColorScale = [0, 0x33ff33, 50, 0xffff33, 80, 0xff3333, 100];
my $highLowColorScale = [0, 0x6666ff, 70, $perlchartdir::Transparent, 100, 0xff0000];

if ($chartIndex == 0) {
    # Add the smooth color scale at the default position
    $m->addColorScale($smoothColorScale);
} elsif ($chartIndex == 1) {
    # Add the step color scale at the default position
    $m->addColorScale($stepColorScale);
} elsif ($chartIndex == 2) {
    # Add the high low scale at the default position
    $m->addColorScale($highLowColorScale);
} elsif ($chartIndex == 3) {
    # Add the smooth color scale starting at x = 28 (left of scale) with zero width and ending at x
    # = 28 with 20 pixels width
    $m->addColorScale($smoothColorScale, 28, 0, 28, 20);
} elsif ($chartIndex == 4) {
    # Add the smooth color scale starting at x = 38 (center of scale) with zero width and ending at
    # x = 28 with 20 pixels width
    $m->addColorScale($smoothColorScale, 38, 0, 28, 20);
} else {
    # Add the smooth color scale starting at x = 48 (right of scale) with zero width and ending at x
    # = 28 with 20 pixels width
    $m->addColorScale($smoothColorScale, 48, 0, 28, 20);
}

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

# Add a title using white (0xffffff) 8pt Arial Bold font with a border color background
$m->addTitle("Temp C", "arialbd.ttf", 8, 0xffffff)->setBackground($borderColor->[$chartIndex]);

# Add a bottom title using white (0xffffff) 8pt Arial Bold font with a border color background to
# display the value
$m->addTitle2($perlchartdir::Bottom, $m->formatValue($value, "2"), "arialbd.ttf", 8, 0xffffff
    )->setBackground($borderColor->[$chartIndex]);

# Output the chart
binmode(STDOUT);
print "Content-type: image/png\n\n";
print $m->makeChart2($perlchartdir::PNG);