#!/usr/bin/perl
use strict;
use warnings;
use Gtk2 -init;
use Gtk2::WebKit;
use Glib qw(TRUE FALSE);

# by zentara.... a free Perl adaptation of WebKit's GtkLauncher

my $win = Gtk2::Window->new;
$win->set_default_size(800, 600);
$win->signal_connect(destroy => sub { Gtk2->main_quit });

#globals
my ($toolbarbox,$viewbox,$statusbox,$entry,$view,$statusbar,
$title, $load_progress, $status_context_id);

$title = 'Perl_Browser';
$win->set_title($title);

my $vbox = Gtk2::VBox->new( FALSE, 2 );
   $vbox->set_border_width(2);
   $win->add($vbox);
   $vbox->set_border_width(2);

foreach my $box ( $toolbarbox, $viewbox, $statusbox){ 
   $box = Gtk2::VBox->new( FALSE, 0 );
   $box->set_border_width(0);
   $vbox->pack_start($box,1,1,1);
}

create_toolbar($toolbarbox);
create_browser($viewbox);
create_status($statusbox);

$win->show_all;
$view->grab_focus;

#if you want to open a default file or uri
#$view->open( $ARGV[0] || 'file://z.html' );
#$view->open( $ARGV[0] || 'http://perlmonks.org' );

Gtk2->main;

sub create_toolbar{
        my $box = $_[0];
        my $toolbar = Gtk2::Toolbar->new;
	$toolbar->set_icon_size ('large-toolbar');
	$toolbar->set_show_arrow (FALSE);
        $toolbar->set_orientation ('GTK_ORIENTATION_HORIZONTAL');
        
       #make the toolbar buttons, etc   
       my $button = Gtk2::ToolButton->new_from_stock('gtk-go-back');
       $button->signal_connect( "clicked" => \&go_back, undef );
       $toolbar->insert($button, -1);    
       $toolbar->insert(Gtk2::SeparatorToolItem->new ,-1 );
            
       $button = Gtk2::ToolButton->new_from_stock('gtk-go-forward');
       $button->signal_connect( "clicked" => \&go_forward, undef );
       $toolbar->insert($button, -1);    
       $toolbar->insert(Gtk2::SeparatorToolItem->new ,-1 );

       # make entry for URI's 
       my $entbox = Gtk2::ToolItem->new();
       $entbox->set_expand(1);    
       $entry = Gtk2::Entry->new();
       $entbox->add($entry);
       $entry->signal_connect( "activate" => \&activate_uri_entry, undef );
       $toolbar->insert($entbox, -1);
       
       $button = Gtk2::ToolButton->new_from_stock('gtk-ok');
       $button->signal_connect( "clicked" => \&activate_uri_entry, undef );
       $toolbar->insert($button, -1);

       $button = Gtk2::ToolButton->new(undef,'Screenshot');
       $button->signal_connect( "clicked" => \&screenshot, undef );
       $toolbar->insert($button, -1);

       $box->pack_start($toolbar,FALSE,FALSE,0);
}

sub create_browser{
        my $box = $_[0];

        my $sw = Gtk2::ScrolledWindow->new;
        $sw->set_policy ('automatic', 'automatic'); 
        $sw->set_size_request (500, 500); # hack to set initial empty browser size
            
        $view = Gtk2::WebKit::WebView->new;
        $view->signal_connect( 'notify::title' => \&notify_title, undef );
        $view->signal_connect( 'notify::load-status' => \&notify_load_status, undef );
        $view->signal_connect( 'notify::progress' => \&notify_progress, undef );
        $view->signal_connect( 'hovering-over-link' => \&hovering_over_link, undef );

        $sw->add($view);
        $box->pack_start($sw,1,1,0);
}

sub create_status{
      my $box = $_[0];
      $statusbar = Gtk2::Statusbar->new;
      $status_context_id = $statusbar->get_context_id('Link Hover');
      $box->pack_start($statusbar,FALSE,FALSE,0);
}



sub go_back{ $view->go_back }

sub go_forward{ $view->go_forward }

sub activate_uri_entry{
   my $uri = $entry->get_text;
   $uri ||= 'http://google.com';
   $view->load_uri($uri);
}

sub notify_title{
   my $vtitle = $view->get_title();
   if ($vtitle){ $win->set_title( $vtitle ) };
}

sub notify_load_status{
   if( $view->get('load_status') eq 'WEBKIT_LOAD_COMMITTED'){
       my $frame = $view->get_main_frame();
       my $uri = $view->frame_get_uri($frame);
       if( $uri ){ $entry->set_text($uri)  }
      }
}

sub notify_progress{
   $load_progress = $view->get('progress');
   my $title = sprintf ("Progress: %2d%%", 100 * $load_progress);
   $win->set_title($title);
}

sub hovering_over_link{
      
      my ($hash, undef, $link) = @_;
                     
      if(defined $link){
        #print "$status_context_id\t$link \n";
        
        $statusbar->pop($status_context_id);
        $statusbar->push($status_context_id, $link);
       
       }
}

sub update_title{
  $win->set_title($load_progress)
}

sub screenshot{

# we are going to save the visible browser view window
# this DOES NOT save the entire html, only what is visible
my ($width, $height) = $view->window->get_size;

# create blank pixbuf to hold the image
my $gdkpixbuf = Gtk2::Gdk::Pixbuf->new ('rgb',
                    0,
                    8,
                    $width,
                    $height);

$gdkpixbuf->get_from_drawable ($view->window, 
             undef, 0, 0, 0, 0, $width, $height);

#only jpeg and png is supported !!!! it's 'jpeg', not 'jpg'
$gdkpixbuf->save ("$0.jpg", 'jpeg', quality => 100);
return FALSE;
}