#!/usr/bin/perl -w
use strict;
use warnings;
use CGI;
use GD;

my $query = new CGI;

print $query->header;
print $query->start_html("EasyPX Generator");
print "<H1>EasyPX Generator</H1>\n";
prompt($query);
go_for_it($query);
print $query->end_html;
 
sub prompt {
  my($query) = @_;

  print $query->startform;

  print "Enter Image File Name&nbsp;&nbsp;";
  print $query->textfield('name'),"<br>";

  print "Enter Width&nbsp;&nbsp;";
  print $query->textfield('width'),"<br>";
 
  print "Enter Height&nbsp;&nbsp;";
  print $query->textfield('height'),"<br>";
  
  print "Enter Red Hex Value&nbsp;&nbsp;";
  print $query->textfield('red_value'),"<br>";
  
  print "Enter Green Hex Value&nbsp;&nbsp;";
  print $query->textfield('green_value'),"<br>";

  print "Enter Blue Hex Value&nbsp;&nbsp;";
  print $query->textfield('blue_value'),"<br>";

  print "<p>",$query->reset;
  print $query->submit('Action','Submit');
  print $query->endform;
  print "<hr>\n";
}

sub go_for_it {
  my($query) = @_;
  my(@values,$key);

  print "<H2>Completed with the following values.</H2>";

  foreach $key ($query->param) {
    print "<STRONG>$key</STRONG> -> ";
    @values = $query->param($key);
    print join(", ",@values),"<BR>\n";

    if ($key =~ /name/i) {
      our $name = $query->param($key);
    } elsif ($key =~ /width/i) {
      our $width = $query->param($key);
    } elsif ($key =~ /height/i) {
      our $height = $query->param($key);
    } elsif ($key =~ /red/i) {
      our $red = $query->param($key);
      $red = oct "0x" . $red;
    } elsif ($key =~ /green/i) {
      our $green = $query->param($key);
      $green = oct "0x" . $green;
    } elsif ($key =~ /blue/i) {
      our $blue = $query->param($key);
      $blue = oct "0x" . $blue;
    }
  }

  my $im = new GD::Image(our $width,our $height);

  my $color = $im->colorAllocate(our $red,our $green,our $blue);
  $im->fill(1,1,$color);
  
  open IMAGE, ">" . our $name . ".png";
  print IMAGE $im->png();
  close IMAGE;
}