package MTools::Comp::MFlicker;
#	This program is free software; you can redistribute it and/or
#	modify it under the terms of the GNU LGPL Libray General Public License
#	as published by the Free Software Foundation; either version 2
#	of the License, or (at your option) any later version.
#
#	This program 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 Library General Public License for more details.
#
#	You should have received a copy of the GNU Library General Public License
#	along with this program; if not, write to the Free Software
#	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA,
#	or refer to http://www.gnu.org/copyleft/lgpl.html
#
##################################################################

# Le composant permet d'ajouter un comportement de clignotement ? un objet cible
#
# Parametres : 
#
#	* target : objet cible du tremblement
#	* periode : periode du clignottement
# Propriete :
#	* flick : demarre le clignottement
#	* show : rend l'objet cible toujours visible
#	* hide : rend l'objet cible toujours masque

use strict;
use MTools;
use MTools::MObjet;
use MTools::MTimer;

use vars qw /@ISA/;

BEGIN 
{
	@ISA = qw /MTools::MSwitch/;
}

use Tk;

sub new {
	my ($class, $target, $periode) = @_;
	my $self = new MTools::MObjet ();
	$self -> {__target} = $target;
	$self -> {__target} -> mconfigure (-visible => 0);
	bless $self, $class;
	
	$self -> recordProperty ('periode', $periode);
	
	$self -> {__timer} = new MTools::MTimer ($periode, 1, sub {
		$self -> {__target} -> mconfigure (-visible => !$self -> {__target} -> mget (-visible));
	});
	
	plink ([$self, 'periode'], [$self -> {__timer}, 'timeout']);

	return $self;
}

sub flick {
	my ($self) = @_;
	$self -> {__timer} -> start ();
}

sub show {
	my ($self) = @_;
	$self -> {__timer} -> stop ();
	$self -> {__target} -> mconfigure (-visible => 1);
}

sub hide {
	my ($self) = @_;
	$self -> {__timer} -> stop ();
	$self -> mconfigure ('state' => 'unvisible');
}

1;