<?php
/* Copyright (c) 2003-2004 Rodolphe Quiedeville <rodolphe@quiedeville.org>
 * Copyright (c) 2004-2005 Laurent Destailleur  <eldy@users.sourceforge.net>
 * 
 * This program 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 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.
 *
 * $Id$
 * $Source$
 */

/**
	    \file       htdocs/bargraph.class.php
		\brief      Fichier de la classe de gestion de graphs phplot
		\version    $Revision$
*/

include_once(DOL_DOCUMENT_ROOT."/graph.class.php");


/**
        \class      BarGraph
	    \brief      Classe permettant la gestion des graphs Bar a travers de PHPlot
	    \remarks    Usage: 
                    $graph_data = array("1"=>10,"2"=>20);
	                $px = new BarGraph();
                    $px->SetData($graph_data);
                    $px->SetTitle("title");
                    $px->SetLegend(array("Val1","Val2"));
                    $px->SetWidth(width);
                    $px->SetHeight(height);
                    $px->draw("file.png");
*/

class BarGraph extends Graph
{
    var $db;
    var $error;
  

    /**
     *    \brief      Initialisation graphe
     *    \return     int     <0 si ko, >0 si ok
     */
    function BarGraph()
    {
        global $conf;
        
        // Test si module GD présent
        $modules_list = get_loaded_extensions();
        $isgdinstalled=0;
        foreach ($modules_list as $module)
        {
            if ($module == 'gd') { $isgdinstalled=1; }
        }
        if (! $isgdinstalled) {
            $this->error="Erreur: Le module GD pour php ne semble pas disponible. Il est requis pour générer les graphiques.";
            return -1;
        }
    
        // Défini propriétés de l'objet graphe
        $this->data = $data;    // En general data non defini qd on crée objet
    
        $this->bordercolor = array(235,235,224);
        $this->datacolor = array(array(204,204,179), array(187,187,136), array(235,235,224));
        $this->bgcolor = array(235,235,224);

        $color_file = DOL_DOCUMENT_ROOT."/theme/".$conf->theme."/graph-color.php";
        if (is_readable($color_file))
        {
            include($color_file);
            if (isset($theme_bordercolor)) $this->bordercolor = $theme_bordercolor;
            if (isset($theme_datacolor))   $this->datacolor   = $theme_datacolor;
            if (isset($theme_bgcolor))     $this->bgcolor     = $theme_bgcolor;
        }
    
        $this->precision_y = 0;
    
        $this->width = 400;
        $this->height = 200;
    
        $this->PlotType = 'bars';
    
        return 1;
    }


    function isGraphKo()
    {
        return $this->error;
    }

}

?>