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/* Draw the legend of the active series */
   function drawLegend($X,$Y,$Format="")
    {
     $Family	= isset($Format["Family"]) ? $Format["Family"] : LEGEND_FAMILY_BOX;
...
     $Mode	= isset($Format["Mode"]) ? $Format["Mode"] : LEGEND_VERTICAL;
     if ( $Surrounding != NULL ) { $BorderR = $R + $Surrounding; $BorderG = $G + $Surrounding; $BorderB = $B + $Surrounding; }
     $YStep = max($this->FontSize,$BoxHeight) + 5;
     $XStep = $BoxWidth + 5;
     $XStep = $XSpacing;
     $Data = $this->DataSet->getData();
     $Boundaries = ""; $Boundaries["L"] = $X; $Boundaries["T"] = $Y; $Boundaries["R"] = 0; $Boundaries["B"] = 0; $vY = $Y; $vX = $X;
     foreach($Data["Series"] as $SerieName => $Serie)
      {
       if ( $Serie["isDrawable"] == TRUE && $SerieName != $Data["Abscissa"] )
        {
         if ( $Mode == LEGEND_VERTICAL )
          {
           $BoxArray = $this->getTextBox($vX+$BoxWidth+4,$vY+$BoxHeight/2,$FontName,$FontSize,0,$Serie["Description"]);
           if ( $Boundaries["T"] > $BoxArray[2]["Y"]+$BoxHeight/2 ) { $Boundaries["T"] = $BoxArray[2]["Y"]+$BoxHeight/2; }
           if ( $Boundaries["R"] < $BoxArray[1]["X"]+2 ) { $Boundaries["R"] = $BoxArray[1]["X"]+2; }
           if ( $Boundaries["B"] < $BoxArray[1]["Y"]+2+$BoxHeight/2 ) { $Boundaries["B"] = $BoxArray[1]["Y"]+2+$BoxHeight/2; }
           $Lines = preg_split("/\n/",$Serie["Description"]);
           $vY = $vY + max($this->FontSize*count($Lines),$BoxHeight) + 5;
          }
         elseif ( $Mode == LEGEND_HORIZONTAL )
          {
           $Lines = preg_split("/\n/",$Serie["Description"]);
           $Width = "";
           foreach($Lines as $Key => $Value)
            {
             $BoxArray = $this->getTextBox($vX+$BoxWidth+6,$Y+$BoxHeight/2+(($YStep-3)*$Key),$FontName,$FontSize,0,$Value);
             if ( $Boundaries["T"] > $BoxArray[2]["Y"]+$BoxHeight/2 ) { $Boundaries["T"] = $BoxArray[2]["Y"]+$BoxHeight/2; }
             if ( $Boundaries["R"] < $BoxArray[1]["X"]+2 ) { $Boundaries["R"] = $BoxArray[1]["X"]+2; }
             if ( $Boundaries["B"] < $BoxArray[1]["Y"]+2+$BoxHeight/2 ) { $Boundaries["B"] = $BoxArray[1]["Y"]+2+$BoxHeight/2; }
             $Width[] = $BoxArray[1]["X"];
            }
           $vX=max($Width)+$XStep;
          }
        }
      }
     $vY=$vY-$YStep; $vX=$vX-$XStep;
     $TopOffset  = $Y - $Boundaries["T"];
     if ( $Boundaries["B"]-($vY+$BoxHeight) < $TopOffset ) { $Boundaries["B"] = $vY+$BoxHeight+$TopOffset; }
     if ( $Style == LEGEND_ROUND )      $this->drawRoundedFilledRectangle(...);
     elseif ( $Style == LEGEND_BOX )  $this->drawFilledRectangle(...);
     $RestoreShadow = $this->Shadow; $this->Shadow = FALSE;
     foreach($Data["Series"] as $SerieName => $Serie)
      {
       if ( $Serie["isDrawable"] == TRUE && $SerieName != $Data["Abscissa"] )
        {
         $R = $Serie["Color"]["R"]; $G = $Serie["Color"]["G"]; $B = $Serie["Color"]["B"];
         $Ticks = $Serie["Ticks"]; $Weight = $Serie["Weight"];
         if ( $Family == LEGEND_FAMILY_BOX )

      }
     $this->Shadow = $RestoreShadow;
    }