package Rattrapage;
#	This program is free software; you can redistribute it and/or
#	modify it under the terms of the GNU GPL 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 General Public License for more details.
#	
#	You should have received a copy of the GNU 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/gpl.html
#

use strict;

use vars qw /@ISA/;

use MTools;
use MTools::GUI::MGroup;
use MTools::Widget::MToggleBouton;
use MTools::Widget::MBouton;
use Lien;

use Tk;

BEGIN 
{
	@ISA = qw /MTools::GUI::MGroup/;
}

sub new {
	my ($class, $parent, $comete1, $comete2, $manager, %options) = @_;
	my $lien = new Lien ($parent, $comete1, $comete2);
	my $self = new MTools::GUI::MGroup ($parent);
	bless $self, $class;
	
	$self -> {__lien} = $lien;
	$self -> {__manager} = $manager;

	$self -> recordProperty ('seuil', 8);
	$self -> recordProperty ('mesure', 10);
	$self -> recordProperty ('statut', 'editable');
	$self -> mconfigure (%options);
	$self -> recordProperty ('warning', 0);

	$self -> {__listener} = $manager -> plisten ('-visible', sub {
		my ($src, $key, $val, $old) = @_;
		$self -> mconfigure ('statut' => $val ? 'editable':'non_editable');
	});
	
	plink ([$lien, 'distance'], [$self, 'mesure']);
	$lien -> plisten ('c_x', sub {
		my ($src, $key, $val, $old) = @_;
		$self -> translate ($val - $old, 0);
	});
	$lien -> plisten ('c_y', sub {
		my ($src, $key, $val, $old) = @_;
		$self -> translate (0, $val - $old);
	});
	$self -> translate ($lien -> mget ('c_x'), $lien -> mget ('c_y'));
	 
	my $bck = minstanciate ('rattrapage.svg#bck', $self);
	
	my $evolution = new MTools::MSwitch (
		$self,
		stable => ['rattrapage.svg#stable'],
		montee => ['rattrapage.svg#croissant'],
		descente => ['rattrapage.svg#decroissant'],
	);
	$self -> plisten ('mesure', sub {
		my ($src, $key, $val, $old) = @_;
		$self -> {__old_val} = $self -> {__old_val_wait};
		my $tval = $self -> {__old_val};
		if ($val < $tval)
		{
			$evolution -> mconfigure (state => 'descente');
		}
		elsif ($val > $tval)
		{
			$evolution -> mconfigure (state => 'montee');
		}
		$self -> {__old_val_wait} = $old;
		if ($val <= $self -> mget ('seuil'))
		{
			$self -> mconfigure (warning => 1);
		}
		else
		{
			$self -> mconfigure (warning => 0);
		}
	});
	$self -> plisten ('seuil', sub {
		my ($src, $key, $val, $old) = @_;
		if ($val >= $self -> mget ('mesure'))
		{
			$self -> mconfigure (warning => 1);
		}
		else
		{
			$self -> mconfigure (warning => 0);
		}
	});
	
	my $mesure = minstanciate ('rattrapage.svg#mesure', $self);
	my $seuil = minstanciate ('rattrapage.svg#seuil', $self);
 	minstanciate ('rattrapage.svg#cdr_seuil_h', $self);
 	minstanciate ('rattrapage.svg#cdr_seuil_b', $self);
 	
	my $bouton_cloche = new MTools::Widget::MToggleBouton (
		parent => $self,
 		g_on => 'rattrapage.svg#cloche',
 		g_off => 'rattrapage.svg#cloche_fantome',
 		e_press => 'CLOCHE',
 		e_release => 'PAS_CLOCHE'
 	);
 	
	my $bouton_delete = new MTools::Widget::MBouton (
		parent => $self,
 		g_on => 'rattrapage.svg#delete_on',
 		g_off => 'rattrapage.svg#delete_off',
 		e_release => 'DELETE'
 	);
 	
 	my $gp_mask = new MTools::GUI::MGroup ($self);
 	$self -> {__down} = minstanciate ('rattrapage.svg#mask_seuil_down', $gp_mask);
 	$self -> {__down} -> mconfigure (-visible => 0);
 	$self -> {__up} = minstanciate ('rattrapage.svg#mask_seuil', $gp_mask);
 	my $seuil_mask = minstanciate ('rattrapage.svg#seuil', $gp_mask);
 	minstanciate ('rattrapage.svg#cdr_seuil_h_edit', $gp_mask);
 	minstanciate ('rattrapage.svg#cdr_seuil_b_edit', $gp_mask);
	 
	my $editable = new MTools::MSwitch (
		$self,
		editable => [$bouton_delete, $gp_mask, $bouton_cloche],
		non_editable => [],
	);
		
	$gp_mask -> binding ('<Button-1>', ['pressed', $self, Ev ('y')]);
	$gp_mask -> binding ('<Button1-Motion>', ['motion', $self, Ev ('y')]);
	$gp_mask -> binding ('<ButtonRelease-1>', ['released', $self, Ev ('y')]);
	$bouton_delete -> binding ('DELETE', ['mdelete', $self]);
	
	plink ([$self, 'mesure'], [$mesure, '-text']);
	plink ([$self, 'seuil'], [$seuil, '-text'], [$seuil_mask, '-text']);
	plink ([$self, 'statut'], [$editable, 'state']);
	plink ([$self, 'warning'], [$lien, 'warning']);

	return $self;
}

sub mdelete {
	my ($self) = @_;
	$self -> {__manager} -> unplisten ('-visible', $self -> {__listener});
	$self -> {__lien} -> mdelete ();
	MTools::mdelete ($self);
}

sub pressed {
	my ($self, $y) = @_;
	$self -> {__y} = $y;
	$self -> {__init_value} = $self -> mget ('seuil');
	$self -> {__down} -> mconfigure (-visible => 1);
	$self -> {__up} -> mconfigure (-visible => 0);
}

sub motion {
	my ($self, $y) = @_;
	$self -> mconfigure ('seuil', $self -> {__init_value} - int (($y - $self -> {__y}) / 20) * 0.5);
}

sub released {
	my ($self, $y) = @_;
	$self -> {__down} -> mconfigure (-visible => 0);
	$self -> {__up} -> mconfigure (-visible => 1);
}

1;