use strict;
use GD::Text ;
use GD::Graph::hbars ;
use GD::Graph::colour;

my @data = (
["Vision 3D NEC USB 3.0","Vision 3D Fresco Logic USB 3.0","Vision 3D NEC USB 2.0","Core 100 NEC USB 3.0"],
# Read benchmark
[93.2, 84.8, 29.8, 80.5],
# Write benchmark
[77.1, 83.7, 23.2, 73],
);

my @names = qw/v3d_usb_perf/;
my @dim = (640,480);
for my $my_graph (GD::Graph::hbars->new(@dim))
{
	my $name = shift @names;
	print STDERR "Processing $name\n";

	$my_graph->set(
		t_margin => 15,
		b_margin => 15,
		l_margin => 15,
		r_margin => 15,
		x_label => '',
		y_label => 'Transfer Bandwidth (MB/s)',
		title => 'Average USB Transfer Rates in ASRock HTPCs (MB/s)',

		y_max_value => 100,
		y_tick_number => 5,
		y_label_skip => 1,
		y_tick_offset => 1,
		line_width => 1,
		bar_spacing => 2,
		show_values => 1,
		borderclrs => [ qw(black) ],
		# bgclr => 'gray',
		shadow_depth => 1,
		bargroup_spacing => 50,
		accent_treshold => 200,
		transparent => 0,
		box_axis => 0,
	);
	$my_graph->set( dclrs => [ qw(lblue lgreen) ] );
	$my_graph->set_legend(qw(Read Write));
	$my_graph->set_title_font(   GD::Font->Giant );
	$my_graph->set_x_label_font( GD::Font->MediumBold );
	$my_graph->set_y_label_font( GD::Font->MediumBold );
	$my_graph->set_legend_font( GD::Font->MediumBold );
	$my_graph->set_x_axis_font( GD::Font->MediumBold );
	$my_graph->set_y_axis_font( GD::Font->MediumBold );
	$my_graph->set_values_font( GD::Font->MediumBold );
	$my_graph->plot(\@data);
	save_chart($my_graph, $name);
}

sub save_chart
{
    my ($chart, $name) = @_; 
    local(*OUT);
    my $ext = $chart->export_format;
    open(OUT, ">$name.$ext") or 
        die "Cannot open $name.$ext for write: $!";
    binmode OUT;
    print OUT $chart->gd->$ext();
    close OUT;
}