public function drawGraph(SC_Graph_Line $objGraphLine)
 {
     // グラフ背景を描画
     $objGraphLine->drawYLine();
     $objGraphLine->drawXLine();
     for ($i = 0; $i < $objGraphLine->line_max; $i++) {
         // 折れ線グラフ描画
         $objGraphLine->drawLine($i);
         // マークを描画
         $objGraphLine->drawMark($i);
         // ラベルを描画
         $line_no = $i;
         $arrData = $objGraphLine->arrDataList[$line_no];
         $arrPointList = $objGraphLine->arrPointList[$line_no];
         $count = count($arrPointList);
         for ($i2 = 0; $i2 < $count; $i2++) {
             $x = $arrPointList[$i2][0];
             $y = $arrPointList[$i2][1];
             $text_width = $objGraphLine->getTextWidth(number_format($arrData[$i2]), FONT_SIZE);
             $x_pos = $x - $text_width / 2;
             $y_pos = $y - FONT_SIZE - 5;
             $objGraphLine->setText(FONT_SIZE, $x_pos, $y_pos, number_format($arrData[$i2]), NULL, $objGraphLine->XLabelAngle);
         }
     }
 }