#!/usr/bin/perl -w

use strict;
use Tk;
use Tk::WinPhoto;
use Tk::JPEG;

#Global variables
my $img_count = 0; #number of images displayed
my @mini; #array of frames created when image is grabbed

#Main window parameters
my $mw = MainWindow->new();
$mw->minsize(qw(670 510));
$mw->configure(-background=>'gray');
$mw->title("Screen Capture GUI");

my $but_capture = $mw->Button( -text => "Capture Screen", -command => sub { \&Grab() } );
$but_capture -> place(-x=>10,-y=>5, -width=>650);

my $exit = $mw->Button( -text => "Exit", -command => sub { exit } );
$exit -> place(-x=>560,-y=>460, -width=>100);

my $frame2_1 = $mw->Scrolled('Frame',-scrollbars=> "e");
$frame2_1 -> place(-x=>10,-y=>50, -width=>650, -height=>400 );

MainLoop();

##########################################################################
##########################################################################

sub Grab(){

#Takes picture and makes thumbnail to display in mini frame
##########################################################################
#Creating file handle and taking picture
my $tim = time();
my $fname = "/tmp/".$tim.".jpg";
#print "$fname\n";
system("import -frame $fname");

#resize to display in window
my $fname2=$fname."sm.jpg";
system("convert -size 230X230 $fname -resize 230x230 $fname2");
##########################################################################

$img_count++;

#Frame packed in scrolling Frame
$mini[$img_count] = $frame2_1->Frame(-background=>'#3300ff'); 
$mini[$img_count] -> configure(-relief => 'groove', -borderwidth => 2);
$mini[$img_count] ->pack();

#need to create new frame to hold contents
#stupid pack needs to create area to display things, this works but not quite right?
my $dummy = $mini[$img_count]->Canvas();
$dummy -> create('rectangle', 0,0,500,300, -fill=>"black");
$dummy -> pack();

#items for mini frame
my $img_label = $mini[$img_count]->Label(-text=>"Image $img_count");
$img_label -> place(-x=>5,-y=>5);

my $pic_location = $mini[$img_count]->Label(-text=>"Pathname:");
$pic_location -> place(-x=>5,-y=>25 );

my $pic_fname = $mini[$img_count]->Entry(-width=>50,-textvariable=>"$fname");
$pic_fname -> place(-x=>70,-y=>25 );

my $pic = $mini[$img_count]->Photo( -file =>"$fname2");
my $f =$mini[$img_count]->Label(-image => $pic);
$f -> place(-x=>5,-y=>50 );

my $i = $img_count;
my $but_delete = $mini[$img_count] ->Button( -text => "Delete Image", -command => sub { \&Delete($mini[$i], $i) } );
$but_delete -> place(-x=>5,-y=>240 );

my $blank1 = $frame2_1->Label(-text=>"");
$blank1 ->pack();

#Removes items from scrolling frame and replaces them with most recent frame created at top
################################################
my $k = $img_count-1;
if($img_count>=2){
while($k!=0){
$mini[$k]->packForget;
$k--;
}
$k=$img_count;
while($k!=0){
$mini[$k]->pack();
$k--;
}
}
################################################
#print "i =$img_count :: mini is $mini[$img_count]\n";

} #close Grab()

##########################################################################
##########################################################################

sub Delete(){
my ($fn, $i) =@_;

#if only one image displayed
if ($img_count == 1){$fn ->destroy; $img_count--; return;}

#print "Image $i deleted is $fn\n";
$fn ->destroy;

#Deleted image now need to reorder array @mini[]
splice(@mini,$i,1);
$img_count--;
}