use diagnostics;
use strict;
use Tk;


my $colour = "black";

# title
my $main = MainWindow->new(-title => "Matrix...", -bg => $colour,);
# size of window
$main->minsize(qw(422 200));
$main->maxsize(qw(422 200));


# icon in the top left corner of the window (system menu icon)
my $file4o = "C:\\Perl\\tk\\prog2\\matx.gif"; # around 32x32 GIF or BMP # add you own path ?!? Transparancy in gif not working for me ????
$main->idletasks; # necessary !
my $icon4options = $main->Photo(-file => $file4o);
$main->iconimage($icon4options);

# left side
my $leftframe=$main->Frame(-bg => $colour,)->pack(-side=>'left', -fill=>'y');

# $main Vs $leftframe
my $matrix_textbox = $main->Text(-width => "2", -background => $colour,
-font => "-*-Matrix Code NFI-*-*-*--*-200-*",          # hash out if you don't have the font
-foreground => "lightgreen", -wrap => "none", -relief => 'flat',)->pack(-side => 'right', -fill => 'y');
# A matric font can be found at http://www.1001fonts.com/font_details.html?font_id=2555

my $matrix_textbox2 = $main->Text(-width => "2", -background => $colour,
-font => "-*-Matrix Code NFI-*-*-*--*-200-*",            # hash out if you don't have the font
-foreground => "lightgreen", -wrap => "none", -relief => 'flat',)->pack(-side => 'right', -fill => 'y');
# A matric font can be found at http://www.1001fonts.com/font_details.html?font_id=2555

my $matrix_textbox3 = $main->Text(-width => "2", -background => $colour,
-font => "-*-Matrix Code NFI-*-*-*--*-200-*",           # hash out if you don't have the font
-foreground => "lightgreen", -wrap => "none", -relief => 'flat',)->pack(-side => 'right', -fill => 'y');
# A matric font can be found at http://www.1001fonts.com/font_details.html?font_id=2555


my $a =("a\n");
my $b =("b\n");
my $c =("c\n");
my $d =("d\n");
my $e =("e\n");
my $f =("f\n");
my $g =("g\n");
my $H =("H\n");
my $i =("i\n");

my $j =("j\n");
my $l =("l\n");
my $n =("n\n");
my $o =("o\n");
my $r =("r\n");
my $s =("s\n");
my $hip =("\,\n");
my $w =("w\n");
my $y =("y\n");
my $space =("\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
my $onegap =(" \n");


sub five{
my @letters =($d, $l, $r, $o, $w, $onegap, $o, $l, $l, $e, $H, $space);
my @letters2 =($n, $i, $a, $g, $a, $onegap, $o, $l, $l, $e, $H, $space);
my @letters3 =($onegap, $onegap, $onegap, $y, $o, $b, $onegap, $d, $a, $b, $onegap, $onegap, $onegap, $onegap, $space);

$matrix_textbox->Contents(@letters, @letters, @letters);
$matrix_textbox2->Contents(@letters2, @letters2, @letters2);
$matrix_textbox3->Contents(@letters3, @letters3, @letters3);

$matrix_textbox->configure(-state => 'disabled',);
$matrix_textbox2->configure(-state => 'disabled',);
$matrix_textbox3->configure(-state => 'disabled',);

$matrix_textbox->yviewScroll( 37,'units');
$matrix_textbox2->yviewScroll( 67,'units');
$matrix_textbox3->yviewScroll( 27,'units');

my $max = 27;        # run through the below 27 times
for (my $i=1; $i <= $max; $i++)  {


$matrix_textbox->yviewScroll( -1,'units');
$matrix_textbox2->yviewScroll( -2,'units');
$matrix_textbox3->yviewScroll( -1,'units');


$main->update;
use Time::HiRes;
Time::HiRes::sleep (.1  #
);
}
}


## repeat the above until I change $repeat to anything other than 0 ????
my  $repeat = 0;
while ($repeat =~ /0/) {five;}

#
# Bits I'm after:
#
# To add a trailling and/or first/**** character brighter effect ???
# as of $matrix_textbox->configure(-foreground => "green",); only for first/**** character of each @letters... ????

# sound effect ???

# disable the right click on scrolling text's popup. It's cursor change too.

#
# crack pic over text (transparent gif over text)
MainLoop;