<?php
/*
 Reportico - PHP Reporting Tool
 Copyright (C) 2010-2013 Peter Deed

 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

 * File:        swgraph.php
 *
 * Contains functionality for generating inline report
 * graphs. The Reportico engine will either - depending
 * on the output format - generate URL string to create
 * the graph or generate the graph itself using these
 * classes.
 *
 * @link http://www.reportico.org/
 * @copyright 2010-2013 Peter Deed
 * @author Peter Deed <info@reportico.org>
 * @package Reportico
 * @license - http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
 * @version $Id: swgraph.php,v 1.13 2013/08/08 18:20:39 peter Exp $
 */


error_reporting(E_ALL);

if ( function_exists( "imagecreatefromstring" ) )
{
include ("jpgraph/src/jpgraph.php");
include ("jpgraph/src/jpgraph_line.php");
include ("jpgraph/src/jpgraph_error.php");
include ("jpgraph/src/jpgraph_bar.php");
include ("jpgraph/src/jpgraph_pie.php");
include ("jpgraph/src/jpgraph_pie3d.php");
}
require_once('swutil.php');

/**
 * Class reportico_graph
 *
 * Storage and generation of report graphs. Holds
 * everything necessary such as titles, axis formatting, 
 * graph type, colours etc
 */
class reportico_graph
{
	var $graph_column = "";
	var $title = "Set Title";
	var $title_actual = "Set Title";
	var $xtitle = "Set Title";
	var $ytitle = "Set Title";
	var $xtitle_actual = "Set Title";
	var $ytitle_actual = "Set Title";
	var $graphcolor = ".DEFAULT";
	var $width = ".DEFAULT";
	var $height = ".DEFAULT";
	var $width_actual = 400;
	var $height_actual = 200;
	var $xtickinterval_actual = 1;
	var $xticklabelinterval_actual = 1;
	var $xaxiscolor_actual = "black";
	var $ytickinterval_actual = 1;
	var $yticklabelinterval_actual = 1;
	var $yaxiscolor_actual = "black";
	var $graphcolor_actual = "white";
	var $margincolor_actual;
	var $marginleft_actual;
	var $marginright_actual;
	var $margintop_actual;
	var $marginbottom_actual;
	var $gridpos_actual = ".DEFAULT";
	var $xgriddisplay_actual = ".DEFAULT";
	var $xgridcolor_actual = ".DEFAULT";
	var $ygriddisplay_actual = ".DEFAULT";
	var $ygridcolor_actual = ".DEFAULT";
	var $titlefont_actual = "";
	var $titlefontstyle_actual = "";
	var $titlefontsize_actual = ".DEFAULT";
	var $titlecolor_actual = ".DEFAULT";
	var $xtitlefont_actual = "";
	var $xtitlefontstyle_actual = "";
	var $xtitlefontsize_actual = ".DEFAULT";
	var $xtitlecolor_actual = ".DEFAULT";
	var $ytitlefont_actual = "";
	var $ytitlefontstyle_actual = "";
	var $ytitlefontsize_actual = ".DEFAULT";
	var $ytitlecolor_actual = ".DEFAULT";
	var $xaxisfont_actual = "";
	var $xaxisfontstyle_actual = "";
	var $xaxisfontsize_actual = ".DEFAULT";
	var $xaxisfontcolor_actual = ".DEFAULT";
	var $yaxisfont_actual = "";
	var $yaxisfontstyle_actual = "";
	var $yaxisfontsize_actual = ".DEFAULT";
	var $yaxisfontcolor_actual = ".DEFAULT";

	var $width_pdf = ".DEFAULT";
	var $height_pdf = ".DEFAULT";
	var $titlefont = ".DEFAULT";
	var $titlefontstyle = ".DEFAULT";
	var $titlefontsize = ".DEFAULT";

	var $gridpos = ".DEFAULT";
	var $xgriddisplay = ".DEFAULT";
	var $xgridcolor = ".DEFAULT";
	var $ygriddisplay = ".DEFAULT";
	var $ygridcolor = ".DEFAULT";

	var $yaxiscolor = ".DEFAULT";
	var $yaxisfont = ".DEFAULT";
	var $yaxisfontstyle = ".DEFAULT";
	var $yaxisfontsize = ".DEFAULT";
	var $yaxisfontcolor = ".DEFAULT";
	var $xaxiscolor = ".DEFAULT";
	var $xaxisfont = ".DEFAULT";
	var $xaxisfontstyle = ".DEFAULT";
	var $xaxisfontsize = ".DEFAULT";
	var $xaxisfontcolor = ".DEFAULT";
	var $xtitlefont = ".DEFAULT";
	var $xtitlefontstyle = ".DEFAULT";
	var $xtitlefontsize = ".DEFAULT";
	var $xtitlecolor = ".DEFAULT";
	var $xtickinterval = ".DEFAULT";
	var $xticklabelinterval = ".DEFAULT";
	var $ytitlefont = ".DEFAULT";
	var $ytitlefontstyle = ".DEFAULT";
	var $ytitlefontsize = ".DEFAULT";
	var $ytitlecolor = ".DEFAULT";
	var $ytickinterval = ".DEFAULT";
	var $yticklabelinterval = ".DEFAULT";
	var $titlecolor = ".DEFAULT";
	var $margincolor = ".DEFAULT";
	var $marginleft = ".DEFAULT";
	var $marginright = ".DEFAULT";
	var $margintop = ".DEFAULT";
	var $marginbottom = ".DEFAULT";
	var $xlabel_column = "";
	var $ylabel_column = "";
	var $xlabels = array();
	var $ylabels = array();
	var $plot = array();
	var $reportico = false;

	function reportico_graph(&$reportico, $in_val = "")
	{
		$this->reportico = $reportico;
		$this->graph_column = $in_val;
	}

	function &create_plot($in_query)
	{
        $pl = array(
                "name" => $in_query,
                "type" => "LINE",
                "fillcolor" => "",
                "linecolor" => "black",
                "datatype" => "number",
                "legend" => "",
                "data" => array()
            );
        $this->plot[] =& $pl;

		return ( $pl );
	}

	function clear_data()
	{
		foreach ( $this->plot as $k => $v )
		{
			$this->plot[$k]["data"] = array();
		}
		$this->xlabels = array();
		$this->ylabels = array();
	}

	function add_xlabel($in_val)
	{
		$in_val = @preg_replace("/&/", "+", $in_val);
		$this->xlabels[] = $in_val;
	}

	function add_plot_value($in_query, $plotno, $in_val)
	{
		$in_val = trim($in_val);
		if ( !$in_val )
			$in_val = 0;
		foreach ( $this->plot as $k => $v )
		{
			if ( $v["name"] == $in_query )
			{
				switch ( $v["datatype"] )
				{
					case "hhmmss":
						$this->plot[$k]["data"][] = hhmmss_to_seconds($in_val);
						break;

					default:
						$this->plot[$k]["data"][] = $in_val;
				}
			}
		}
	}

	function convert_special_chars($intext)
	{
		$outtext = preg_replace("/&/", "<AMPERSAND>", $intext);
		return $outtext;
	}

	function generate_url_params($target_format, $session_placeholder=false)
	{
		$this->apply_defaults();

		$result = "";
		$url = "";
		$url .= "title=".$this->convert_special_chars($this->title_actual);
		$url .= "&xtitle=".$this->convert_special_chars($this->xtitle_actual);
		$url .= "&ytitle=".$this->convert_special_chars($this->ytitle_actual);
		$url .= "&width=".$this->width_actual;
		$url .= "&height=".$this->height_actual;
		$url .= "&graphcolor=".$this->graphcolor_actual;
		$url .= "&gridposition=".$this->gridpos_actual;
		$url .= "&xgriddisplay=".$this->xgriddisplay_actual;
		$url .= "&xgridcolor=".$this->xgridcolor_actual;
		$url .= "&ygriddisplay=".$this->ygriddisplay_actual;
		$url .= "&ygridcolor=".$this->ygridcolor_actual;
		$url .= "&titlefont=".$this->titlefont_actual;
		$url .= "&titlefontstyle=".$this->titlefontstyle_actual;
		$url .= "&titlefontsize=".$this->titlefontsize_actual;
		$url .= "&titlecolor=".$this->titlecolor_actual;
		$url .= "&xaxiscolor=".$this->xaxiscolor_actual;
		$url .= "&xaxisfont=".$this->xaxisfont_actual;
		$url .= "&xaxisfontstyle=".$this->xaxisfontstyle_actual;
		$url .= "&xaxisfontsize=".$this->xaxisfontsize_actual;
		$url .= "&xaxisfontcolor=".$this->xaxisfontcolor_actual;
		$url .= "&yaxiscolor=".$this->yaxiscolor_actual;
		$url .= "&yaxisfont=".$this->yaxisfont_actual;
		$url .= "&yaxisfontstyle=".$this->yaxisfontstyle_actual;
		$url .= "&yaxisfontsize=".$this->yaxisfontsize_actual;
		$url .= "&yaxisfontcolor=".$this->yaxisfontcolor_actual;
		$url .= "&xtitlefont=".$this->xtitlefont_actual;
		$url .= "&xtitlefontstyle=".$this->xtitlefontstyle_actual;
		$url .= "&xtitlefontsize=".$this->xtitlefontsize_actual;
		$url .= "&xtitlecolor=".$this->xtitlecolor_actual;
		$url .= "&xtickint=".$this->xtickinterval_actual;
		$url .= "&xticklabint=".$this->xticklabelinterval_actual;
		$url .= "&ytitlefont=".$this->ytitlefont_actual;
		$url .= "&ytitlefontstyle=".$this->ytitlefontstyle_actual;
		$url .= "&ytitlefontsize=".$this->ytitlefontsize_actual;
		$url .= "&ytitlecolor=".$this->ytitlecolor_actual;
		$url .= "&ytickint=".$this->ytickinterval_actual;
		$url .= "&yticklabint=".$this->yticklabelinterval_actual;
		$url .= "&margincolor=".$this->margincolor_actual;
		$url .= "&marginleft=".$this->marginleft_actual;
		$url .= "&marginright=".$this->marginright_actual;
		$url .= "&margintop=".$this->margintop_actual;
		$url .= "&marginbottom=".$this->marginbottom_actual;
		$url .= "&xlabels=".implode(",",$this->xlabels);

		foreach ( $this->plot as $k => $v )
		{
			$str = implode(",",$v["data"]);
			$url .= "&plotdata$k=$str";
			$url .= "&plottype$k=".$v["type"];
			$url .= "&plotlinecolor$k=".$v["linecolor"];
			if ( $v["legend"] )
				$url .= "&plotlegend$k=".$v["legend"];
			if ( $v["fillcolor"] )
				$url .= "&plotfillcolor$k=".$v["fillcolor"];
		}

		if ( $session_placeholder)
		{
			$ses = "graph_".$session_placeholder;
            set_reportico_session_param($ses, $url);
			$url = "graphid=".$ses."&time=".time();
		}

		$dyngraph = "dyngraph.php";
        if ( defined("SW_GRAPH_ENGINE") && SW_GRAPH_ENGINE == "PCHART" )
		    $dyngraph = "dyngraph_pchart.php";

        $dr = get_reportico_url_path();
        $dyngraph = $dr."/".find_best_url_in_include_path( $dyngraph );
        if ( $this->reportico->framework_parent )
        {
            $dyngraph = "";
        }
        $forward_url_params = session_request_item('forward_url_get_parameters', $this->reportico->forward_url_get_parameters);
        if ( $forward_url_params )
            $url .= "&".$forward_url_params;
        $url .= "&reportico_call_mode=graph_jpgraph";
        $url .= "&session_name=".reportico_session_name();
		$result = '<img class="swRepGraph" src=\''.$dyngraph.'?'.$url.'\'>';

		return $result;
	}

	function set_graph_color($in_col)
	{
		$this->graphcolor = $in_col;
	}
	function set_graph_column($in_val)
	{
		$this->graph_column = $in_val;
	}
	function set_title($in_title)
	{
		$this->title = $in_title;
	}
	function set_xtitle($in_xtitle)
	{
		$this->xtitle = $in_xtitle;
	}
	function set_ytitle($in_ytitle)
	{
		$this->ytitle = $in_ytitle;
	}
	function set_width_pdf($in_width)
	{
		$this->width_pdf = $in_width;
	}
	function set_height_pdf($in_height)
	{
		$this->height_pdf = $in_height;
	}
	function set_width($in_width)
	{
		$this->width = $in_width;
	}
	function set_height($in_height)
	{
		$this->height = $in_height;
	}
	function set_grid($in_pos,$in_xdisplay, $in_xcolor, $in_ydisplay, $in_ycolor)
	{
			$this->gridpos = $in_pos;
			$this->xgriddisplay = $in_xdisplay;
			$this->xgridcolor = $in_xcolor;
			$this->ygriddisplay = $in_ydisplay;
			$this->ygridcolor = $in_ycolor;
	}
	function set_xlabel_column($in_xlabel_column)
	{
		$this->xlabel_column = $in_xlabel_column;
	}
	function set_ylabel_column($in_ylabel_column)
	{
		$this->ylabel_column = $in_ylabel_column;
	}


	function set_title_font($in_font, $in_style, $in_size, $in_col)
	{
			$this->titlefont = $in_font;
			$this->titlefontstyle = $in_style;
			$this->titlefontsize = $in_size;
			$this->titlecolor = $in_col;
	}

	function set_xtitle_font($in_font, $in_style, $in_size, $in_col)
	{
			$this->xtitlefont = $in_font;
			$this->xtitlefontstyle = $in_style;
			$this->xtitlefontsize = $in_size;
			$this->xtitlecolor = $in_col;
	}

	function set_ytitle_font($in_font, $in_style, $in_size, $in_col)
	{
			$this->ytitlefont = $in_font;
			$this->ytitlefontstyle = $in_style;
			$this->ytitlefontsize = $in_size;
			$this->ytitlecolor = $in_col;
	}

	function set_xaxis_font($in_font, $in_style, $in_size, $in_col)
	{
			$this->xaxisfont = $in_font;
			$this->xaxisfontstyle = $in_style;
			$this->xaxisfontsize = $in_size;
			$this->xaxisfontcolor = $in_col;
	}

	function set_yaxis_font($in_font, $in_style, $in_size, $in_col)
	{
			$this->yaxisfont = $in_font;
			$this->yaxisfontstyle = $in_style;
			$this->yaxisfontsize = $in_size;
			$this->yaxisfontcolor = $in_col;
	}

	function set_xaxis($in_tic,$in_lab_tic,$in_col)
	{
			$this->xtickinterval = $in_tic;
			$this->xticklabelinterval = $in_lab_tic;
			$this->xaxiscolor = $in_col;
	}

	function set_yaxis($in_tic,$in_lab_tic,$in_col)
	{
			$this->ytickinterval = $in_tic;
			$this->yticklabelinterval = $in_lab_tic;
			$this->yaxiscolor = $in_col;

	}

	function set_margin_color($in_col)
	{
			$this->margincolor = $in_col;
	}

	function set_margins($in_lt, $in_rt, $in_tp, $in_bt)
	{
			$this->marginleft = $in_lt;
			$this->marginright = $in_rt;
			$this->margintop = $in_tp;
			$this->marginbottom = $in_bt;
	}


	function apply_defaults ()
	{
		$this->xaxiscolor_actual = check_for_default("XAxisColor", $this->xaxiscolor);
		$this->xticklabelinterval_actual = check_for_default("XTickLabelInterval", $this->xticklabelinterval);
		$this->xtickinterval_actual = check_for_default("XTickInterval", $this->xtickinterval);
		$this->yaxiscolor_actual = check_for_default("YAxisColor", $this->yaxiscolor);
		$this->yticklabelinterval_actual = check_for_default("YTickLabelInterval", $this->yticklabelinterval);
		$this->ytickinterval_actual = check_for_default("YTickInterval", $this->ytickinterval);
		$this->graphcolor_actual = check_for_default("GraphColor", $this->graphcolor);
		$this->marginbottom_actual = check_for_default("MarginBottom", $this->marginbottom);
		$this->margintop_actual = check_for_default("MarginTop", $this->margintop);
		$this->marginleft_actual = check_for_default("MarginLeft", $this->marginleft);
		$this->marginright_actual = check_for_default("MarginRight", $this->marginright);
		$this->margincolor_actual = check_for_default("MarginColor", $this->margincolor);
		$this->gridpos_actual = check_for_default("GridPosition", $this->gridpos);
		$this->xgriddisplay_actual = check_for_default("XGridDisplay", $this->xgriddisplay);
		$this->xgridcolor_actual = check_for_default("XGridColor", $this->xgridcolor);
		$this->ygriddisplay_actual = check_for_default("YGridDisplay", $this->ygriddisplay);
		$this->ygridcolor_actual = check_for_default("YGridColor", $this->ygridcolor);

		$this->titlefont_actual = check_for_default("TitleFont", $this->titlefont);
		$this->titlefontstyle_actual = check_for_default("TitleFontStyle", $this->titlefontstyle);
		$this->titlefontsize_actual = check_for_default("TitleFontSize", $this->titlefontsize);
		$this->titlecolor_actual = check_for_default("TitleColor", $this->titlecolor);
		$this->xtitlefont_actual = check_for_default("XTitleFont", $this->xtitlefont);
		$this->xtitlefontstyle_actual = check_for_default("XTitleFontStyle", $this->xtitlefontstyle);
		$this->xtitlefontsize_actual = check_for_default("XTitleFontSize", $this->xtitlefontsize);
		$this->xtitlecolor_actual = check_for_default("XTitleColor", $this->xtitlecolor);
		$this->ytitlefont_actual = check_for_default("YTitleFont", $this->ytitlefont);
		$this->ytitlefontstyle_actual = check_for_default("YTitleFontStyle", $this->ytitlefontstyle);
		$this->ytitlefontsize_actual = check_for_default("YTitleFontSize", $this->ytitlefontsize);
		$this->ytitlecolor_actual = check_for_default("YTitleColor", $this->ytitlecolor);
		$this->xaxisfont_actual = check_for_default("XAxisFont", $this->xaxisfont);
		$this->xaxisfontstyle_actual = check_for_default("XAxisFontStyle", $this->xaxisfontstyle);
		$this->xaxisfontsize_actual = check_for_default("XAxisFontSize", $this->xaxisfontsize);
		$this->xaxisfontcolor_actual = check_for_default("XAxisFontColor", $this->xaxisfontcolor);
		$this->xaxiscolor_actual = check_for_default("XAxisColor", $this->xaxiscolor);
		$this->yaxisfont_actual = check_for_default("YAxisFont", $this->yaxisfont);
		$this->yaxisfontstyle_actual = check_for_default("YAxisFontStyle", $this->yaxisfontstyle);
		$this->yaxisfontsize_actual = check_for_default("YAxisFontSize", $this->yaxisfontsize);
		$this->yaxisfontcolor_actual = check_for_default("YAxisFontColor", $this->yaxisfontcolor);
		$this->yaxiscolor_actual = check_for_default("YAxisColor", $this->yaxiscolor);

	}

	function generate_graph_image ()
	{
		// Create the graph. 
		// Set up Font Mapping Arrays
		$fontfamilies = array (
			"Font 0" => FF_FONT0,
			"Font 1" => FF_FONT1,
			"Font 2" => FF_FONT2,
			"Font0" => FF_FONT0,
			"Font1" => FF_FONT1,
			"Font2" => FF_FONT2,
			"Arial" => FF_ARIAL,
			"Verdana" => FF_VERDANA,
			"Courier" => FF_COURIER,
			//"Book" => FF_BOOK,
			"Comic" => FF_COMIC,
			//"Script" => FF_HANDWRT,
			"Times" => FF_TIMES,
            "Georgia" => FF_GEORGIA,
            "Trebuchet" => FF_TREBUCHE,
            "advent_light" => advent_light,
            "Bedizen" => Bedizen,
            "Mukti_Narrow" => Mukti_Narrow,
            "calibri" => calibri,
            "Forgotte" => Forgotte,
            "GeosansLight" => GeosansLight,
            "MankSans" => MankSans,
            "pf_arma_five" => pf_arma_five,
            "Silkscreen" => Silkscreen,
            "verdana" => verdana,
            "Vera" => FF_VERA
		);

		$fontstyles = array (
			"Normal" =>  FS_NORMAL,
			"Bold" => FS_BOLD,
			"Italic" => FS_ITALIC,
			"Bold+Italic" => FS_BOLDITALIC
		);

		$this->apply_defaults();

        if ( !function_exists( "imagecreatefromstring" ) )
		{
			handle_error("Graph Option Not Available. Requires GD2");
			return;
		}

		if ( $this->plot[0]["type"] == "PIE" || $this->plot[0]["type"] == "PIE3D" )
		{
			$graph = new PieGraph($this->width_actual,$this->height_actual,"auto");	
			$graph->SetScale("textlin");

			$graph->img->SetMargin($this->marginleft_actual,$this->marginright_actual,$this->margintop_actual,$this->marginbottom_actual);
			$graph->SetMarginColor($this->margincolor_actual);
			$graph->img->SetAntiAliasing(); 
			$graph->SetColor($this->graphcolor_actual);
			$graph->SetShadow();
			$graph->xaxis->SetTitleMargin($this->marginbottom_actual - 45); 
			$graph->yaxis->SetTitleMargin($this->marginleft_actual - 25); 
		}
		else
		{
			$graph = new Graph($this->width_actual,$this->height_actual,"auto");	
			$graph->SetScale("textlin");

			$graph->img->SetMargin($this->marginleft_actual,$this->marginright_actual,$this->margintop_actual,$this->marginbottom_actual);
			$graph->SetMarginColor($this->margincolor_actual);
			$graph->img->SetAntiAliasing(); 
			$graph->SetColor($this->graphcolor_actual);
			$graph->SetShadow();
			$graph->xaxis->SetTitleMargin($this->marginbottom_actual - 45); 
			$graph->yaxis->SetTitleMargin($this->marginleft_actual - 25); 
		}


		$lplot = array();
		$lplotct = 0;
		foreach ( $this->plot as $k => $v )
		{
			switch ( $v["type"] )
			{
				case "PIE":
					$lplot[$lplotct]=new PiePlot($v["data"]);
					$lplot[$lplotct]->SetColor($v["linecolor"]);
					foreach ( $xlabels as $k => $v )
					{
						$xlabels[$k] = $v."\n %.1f%%";
					}
					$lplot[$lplotct]->SetLabels($xlabels,1.0);
					$graph->Add($lplot[$lplotct]);
					break;
				case "PIE3D":
					$lplot[$lplotct]=new PiePlot3D($v["data"]);
					$lplot[$lplotct]->SetColor($v["linecolor"]);
					foreach ( $xlabels as $k => $v )
					{
						$xlabels[$k] = $v."\n %.1f%%";
					}
					$lplot[$lplotct]->SetLabels($xlabels,1.0);
					$graph->Add($lplot[$lplotct]);
					break;
				case "STACKEDBAR":
				case "BAR":
					$lplot[$lplotct]=new BarPlot($v["data"]);
					$lplot[$lplotct]->SetColor($v["linecolor"]);
					$lplot[$lplotct]->SetWidth(0.8);
					//$lplot[$lplotct]->SetWeight(5);
					if ( $v["fillcolor"] )
						$lplot[$lplotct]->SetFillColor($v["fillcolor"]);
					if ( $v["legend"] )
						$lplot[$lplotct]->SetLegend($v["legend"]);
					$graph->Add($lplot[$lplotct]);
						break;
				case "LINE":
				default;
					if ( count($v["data"]) == 1 )
						$v["data"][] = 0;
					$lplot[$lplotct]=new LinePlot($v["data"]);
					$lplot[$lplotct]->SetColor($v["linecolor"]);
					//$lplot[$lplotct]->SetWeight(5);
					if ( $v["fillcolor"] )
						$lplot[$lplotct]->SetFillColor($v["fillcolor"]);
					if ( $v["legend"] )
						$lplot[$lplotct]->SetLegend($v["legend"]);
					$graph->Add($lplot[$lplotct]);
					break;
			}
			$lplotct++;
		}
		$graph->title->Set($this->title_actual);
		$graph->xaxis->title->Set($this->xtitle_actual);
		$graph->yaxis->title->Set($this->ytitle_actual);

		$graph->xgrid->SetColor($this->xgridcolor_actual);
		$graph->ygrid->SetColor($this->ygridcolor_actual);

		switch ( $this->xgriddisplay_actual )
		{
			case "all":
				$graph->xgrid->Show(true,true);
				break;
			case "major":
				$graph->xgrid->Show(true,false);
				break;
			case "minor":
				$graph->xgrid->Show(false,true);
				break;
			case "none":
			default:
				$graph->xgrid->Show(false,false);
				break;
		}

		switch ( $this->ygriddisplay_actual )
		{
			case "all":
				$graph->ygrid->Show(true,true);
				break;
			case "major":
				$graph->ygrid->Show(true,false);
				break;
			case "minor":
				$graph->ygrid->Show(false,true);
				break;
			case "none":
			default:
				$graph->ygrid->Show(false,false);
				break;
		}


		$graph->title->SetFont($fontfamilies[$this->titlefont_actual],$fontstyles[$this->titlefontstyle_actual], $this->titlefontsize_actual);
		$graph->title->SetColor($this->titlecolor_actual);
		$graph->xaxis->SetFont($fontfamilies[$this->xaxisfont_actual],$fontstyles[$this->xaxisfontstyle_actual], $this->xaxisfontsize_actual);
		$graph->xaxis->SetColor($this->xaxiscolor_actual,$this->xaxisfontcolor_actual);
		$graph->yaxis->SetFont($fontfamilies[$this->yaxisfont_actual],$fontstyles[$this->yaxisfontstyle_actual], $this->yaxisfontsize_actual);
		$graph->yaxis->SetColor($this->yaxiscolor_actual,$this->yaxisfontcolor_actual);
		$graph->xaxis->title->SetFont($fontfamilies[$this->xtitlefont_actual],$fontstyles[$this->xtitlefontstyle_actual], $this->xtitlefontsize_actual);
		$graph->xaxis->title->SetColor($this->xtitlecolor_actual);
		$graph->yaxis->title->SetFont($fontfamilies[$this->ytitlefont_actual],$fontstyles[$this->ytitlefontstyle_actual], $this->ytitlefontsize_actual);
		$graph->yaxis->title->SetColor($this->ytitlecolor_actual);
		$graph->xaxis->SetLabelAngle(90);
		$graph->xaxis->SetLabelMargin(5); 
		$graph->yaxis->SetLabelMargin(5); 
		$graph->xaxis->SetTickLabels($this->xlabels);
		$graph->xaxis->SetTextLabelInterval($this->xticklabelinterval_actual);
		$graph->yaxis->SetTextLabelInterval($this->yticklabelinterval_actual);
		$graph->xaxis->SetTextTickInterval($this->xtickinterval_actual);
		$graph->yaxis->SetTextTickInterval($this->ytickinterval_actual);
		$graph->SetFrame(true,'darkblue',2); 
		$graph->SetFrameBevel(2,true,'black'); 

		if ( $this->gridpos_actual == "front" )
			$graph->SetGridDepth(DEPTH_FRONT); 

		// Display the graph
		$handle = $graph->Stroke(_IMG_HANDLER);
		return $handle;
		
	}
}

