#!/usr/bin/perl -w
#
# $Id: linegraph.pl $
#

use strict;
use GD;
use GD::Text::Align ;
use GD::Graph::linespoints ;
# use GD::Graph::bars	;
# use GD::Graph::hbars ;
# use GD::Graph::Data ;
use GD::Graph::colour qw(:colours);
use CGI qw(:standard);
use Data::Dumper;

my $graph = new GD::Graph::linespoints () ;
my $xdim = param('xdim');
if (not $xdim) {$xdim = 500;}
my $ydim = param('ydim');
if (not $ydim) {$ydim = 200};
#  my $NoLegend = param('nolegend') ;
#  if (not $NoLegend) {$NoLegend = 0} ;
#  my $Three_D = 1 ;
#  if (param('not3d')) {$Three_D = 0;}
my @labels = split(/:/,param('labels'));
warn "LinesPoints Labels " . param('labels') ;
my @datasets = split(/::/,param('values')) ;
my @data = () ;
my @datanew = () ;
my $dataset ;
my $dataindex = 0 ;
# $data[$dataindex] = \@labels ;
# $dataindex ++ ;
$graph->set_legend(@labels) ;
foreach $dataset (@datasets) {
	warn "LinesPoints Data $dataset" ;
	@datanew = split(/:/,$dataset) ;
	$data[$dataindex] = \@datanew ;
	$dataindex ++ ;
}

my @parm_colors = split(/:/,param('colors'));
add_colour('decentblue' => [32,112,255]);
# my $colors = $graph->get('dclrs');
# $colors->[2] = 'decentblue';
my $colour ; my $index = 0 ;
# foreach $colour (@parm_colors) {
	# $colors->[$index] = $colour ;
	# $index ++ ;
# }
# print STDERR Dumper($colors);
my $maxlen = 0;
foreach (@labels) {if ($maxlen < length($_)) {$maxlen = length($_);}}
my $legendwidth = 9*($maxlen+2) + 16 + 32;
my %opt = ('transparent' => 0,
# 	   'dclrs' => $colors,
	   'bgclr' => 'white',
	   'fgclr' => 'black',
	   'accentclr' => 'black',
	   'labelclr' => 'black',
	   # 'textclr' => 'black',
	   'l_margin' => 1,
	   'b_margin' => 1,
	   't_margin' => 1,
	   'r_margin' => 1
	);
if (param('title')) {$opt{'title'} = param('title');}
if (param('xlabel')) {$opt{'x_label'} = param('xlabel');}
if (param('ylabel')) {$opt{'y_label'} = param('ylabel');}
if (param('ymax')) {$opt{'y_max_value'} = param('ymax');}
if (param('ymin')) {$opt{'y_min_value'} = param('ymin');}
if (param('yticknum')) {$opt{'y_tick_number'} = param('yticknum');}

$graph->set(%opt) or die $graph->error;
#$graph->set_title_font("Helvetica");
# $graph->set_label_font("/var/www/x4/Fonts/VERDANAB.TTF",12);
#$graph->set_legend_font("/var/www/x4/Fonts/verdana.ttf",10);
# $graph->set_value_font("/var/www/x4/Fonts/VERDANAB.TTF",12);

my $gd = $graph->plot(\@data) or die $graph->error;
my $xoff = $xdim - $legendwidth + 8;
my $yoff = ($ydim - 16*(2*@labels+1))/2;
#my $deltay = ($ydim - 2*$yoff - 32)/@labels;
#open(IMG, '>file.png') or die $!;
my $black = $gd->colorClosest(0,0,0);
my @gdt = ();
binmode STDOUT;
print header("image/png");
print $gd->png;