###################################################
#
#  Copyright (C) 2008-2013 Mario Kemper <mario.kemper@gmail.com>
#
#  This file is part of Shutter.
#
#  Shutter is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 3 of the License, or
#  (at your option) any later version.
#
#  Shutter is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with Shutter; if not, write to the Free Software
#  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
#
###################################################

package Shutter::Geometry::Region;

#modules
#--------------------------------------
use utf8;
use strict;
use warnings;

use Gtk2;

#Glib
use Glib qw/TRUE FALSE/; 

sub new {
	my $class = shift;

	#constructor
	my $self = { };

	bless $self, $class;
	return $self;
}

sub get_clipbox {
	my $self 	= shift;
	my $region 	= shift;
		
	#store clipbox here
	my $clip = undef;
	
	#calculate clipbox
	foreach my $rect ($region->get_rectangles){
		#~ print $rect->x, " - ", $rect->y, " - ", $rect->width, " - ", $rect->height, "\n";
		unless(defined $clip){
			$clip = Gtk2::Gdk::Rectangle->new($rect->x, $rect->y, $rect->width, $rect->height);
		}else{
			if($rect->x < $clip->x){
				$clip->width($clip->width+$clip->x);
				$clip->x($rect->x);
			}
			if($rect->y < $clip->y){
				$clip->height($clip->height+$clip->y);
				$clip->y($rect->y);
			}
			if($rect->x + $rect->width > $clip->x + $clip->width){
				$clip->width($rect->x + $rect->width - $clip->x);
			}
			if($rect->y + $rect->height > $clip->y + $clip->height){
				$clip->height($rect->y + $rect->height - $clip->y);
			}
		}
	}
	
	#return clip or empty rectangle
	if(defined $clip){
		return $clip;
	}else{
		return Gtk2::Gdk::Rectangle->new(0,0,0,0);
	}
		
}


1;

