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<?php
/**
 * PHPExcel
 *
 * Copyright (c) 2006 - 2013 PHPExcel
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   PHPExcel
 * @package    PHPExcel_Worksheet
 * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 * @version    ##VERSION##, ##DATE##
 */


/**
 * PHPExcel_Worksheet_PageSetup
 *
 * <code>
 * Paper size taken from Office Open XML Part 4 - Markup Language Reference, page 1988:
 *
 * 1 = Letter paper (8.5 in. by 11 in.)
 * 2 = Letter small paper (8.5 in. by 11 in.)
 * 3 = Tabloid paper (11 in. by 17 in.)
 * 4 = Ledger paper (17 in. by 11 in.)
 * 5 = Legal paper (8.5 in. by 14 in.)
 * 6 = Statement paper (5.5 in. by 8.5 in.)
 * 7 = Executive paper (7.25 in. by 10.5 in.)
 * 8 = A3 paper (297 mm by 420 mm)
 * 9 = A4 paper (210 mm by 297 mm)
 * 10 = A4 small paper (210 mm by 297 mm)
 * 11 = A5 paper (148 mm by 210 mm)
 * 12 = B4 paper (250 mm by 353 mm)
 * 13 = B5 paper (176 mm by 250 mm)
 * 14 = Folio paper (8.5 in. by 13 in.)
 * 15 = Quarto paper (215 mm by 275 mm)
 * 16 = Standard paper (10 in. by 14 in.)
 * 17 = Standard paper (11 in. by 17 in.)
 * 18 = Note paper (8.5 in. by 11 in.)
 * 19 = #9 envelope (3.875 in. by 8.875 in.)
 * 20 = #10 envelope (4.125 in. by 9.5 in.)
 * 21 = #11 envelope (4.5 in. by 10.375 in.)
 * 22 = #12 envelope (4.75 in. by 11 in.)
 * 23 = #14 envelope (5 in. by 11.5 in.)
 * 24 = C paper (17 in. by 22 in.)
 * 25 = D paper (22 in. by 34 in.)
 * 26 = E paper (34 in. by 44 in.)
 * 27 = DL envelope (110 mm by 220 mm)
 * 28 = C5 envelope (162 mm by 229 mm)
 * 29 = C3 envelope (324 mm by 458 mm)
 * 30 = C4 envelope (229 mm by 324 mm)
 * 31 = C6 envelope (114 mm by 162 mm)
 * 32 = C65 envelope (114 mm by 229 mm)
 * 33 = B4 envelope (250 mm by 353 mm)
 * 34 = B5 envelope (176 mm by 250 mm)
 * 35 = B6 envelope (176 mm by 125 mm)
 * 36 = Italy envelope (110 mm by 230 mm)
 * 37 = Monarch envelope (3.875 in. by 7.5 in.).
 * 38 = 6 3/4 envelope (3.625 in. by 6.5 in.)
 * 39 = US standard fanfold (14.875 in. by 11 in.)
 * 40 = German standard fanfold (8.5 in. by 12 in.)
 * 41 = German legal fanfold (8.5 in. by 13 in.)
 * 42 = ISO B4 (250 mm by 353 mm)
 * 43 = Japanese double postcard (200 mm by 148 mm)
 * 44 = Standard paper (9 in. by 11 in.)
 * 45 = Standard paper (10 in. by 11 in.)
 * 46 = Standard paper (15 in. by 11 in.)
 * 47 = Invite envelope (220 mm by 220 mm)
 * 50 = Letter extra paper (9.275 in. by 12 in.)
 * 51 = Legal extra paper (9.275 in. by 15 in.)
 * 52 = Tabloid extra paper (11.69 in. by 18 in.)
 * 53 = A4 extra paper (236 mm by 322 mm)
 * 54 = Letter transverse paper (8.275 in. by 11 in.)
 * 55 = A4 transverse paper (210 mm by 297 mm)
 * 56 = Letter extra transverse paper (9.275 in. by 12 in.)
 * 57 = SuperA/SuperA/A4 paper (227 mm by 356 mm)
 * 58 = SuperB/SuperB/A3 paper (305 mm by 487 mm)
 * 59 = Letter plus paper (8.5 in. by 12.69 in.)
 * 60 = A4 plus paper (210 mm by 330 mm)
 * 61 = A5 transverse paper (148 mm by 210 mm)
 * 62 = JIS B5 transverse paper (182 mm by 257 mm)
 * 63 = A3 extra paper (322 mm by 445 mm)
 * 64 = A5 extra paper (174 mm by 235 mm)
 * 65 = ISO B5 extra paper (201 mm by 276 mm)
 * 66 = A2 paper (420 mm by 594 mm)
 * 67 = A3 transverse paper (297 mm by 420 mm)
 * 68 = A3 extra transverse paper (322 mm by 445 mm)
 * </code>
 *
 * @category   PHPExcel
 * @package    PHPExcel_Worksheet
 * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_Worksheet_PageSetup
{
        /* Paper size */
        const PAPERSIZE_LETTER                                                  = 1;
        const PAPERSIZE_LETTER_SMALL                                    = 2;
        const PAPERSIZE_TABLOID                                                 = 3;
        const PAPERSIZE_LEDGER                                                  = 4;
        const PAPERSIZE_LEGAL                                                   = 5;
        const PAPERSIZE_STATEMENT                                               = 6;
        const PAPERSIZE_EXECUTIVE                                               = 7;
        const PAPERSIZE_A3                                                              = 8;
        const PAPERSIZE_A4                                                              = 9;
        const PAPERSIZE_A4_SMALL                                                = 10;
        const PAPERSIZE_A5                                                              = 11;
        const PAPERSIZE_B4                                                              = 12;
        const PAPERSIZE_B5                                                              = 13;
        const PAPERSIZE_FOLIO                                                   = 14;
        const PAPERSIZE_QUARTO                                                  = 15;
        const PAPERSIZE_STANDARD_1                                              = 16;
        const PAPERSIZE_STANDARD_2                                              = 17;
        const PAPERSIZE_NOTE                                                    = 18;
        const PAPERSIZE_NO9_ENVELOPE                                    = 19;
        const PAPERSIZE_NO10_ENVELOPE                                   = 20;
        const PAPERSIZE_NO11_ENVELOPE                                   = 21;
        const PAPERSIZE_NO12_ENVELOPE                                   = 22;
        const PAPERSIZE_NO14_ENVELOPE                                   = 23;
        const PAPERSIZE_C                                                               = 24;
        const PAPERSIZE_D                                                               = 25;
        const PAPERSIZE_E                                                               = 26;
        const PAPERSIZE_DL_ENVELOPE                                             = 27;
        const PAPERSIZE_C5_ENVELOPE                                             = 28;
        const PAPERSIZE_C3_ENVELOPE                                             = 29;
        const PAPERSIZE_C4_ENVELOPE                                             = 30;
        const PAPERSIZE_C6_ENVELOPE                                             = 31;
        const PAPERSIZE_C65_ENVELOPE                                    = 32;
        const PAPERSIZE_B4_ENVELOPE                                             = 33;
        const PAPERSIZE_B5_ENVELOPE                                             = 34;
        const PAPERSIZE_B6_ENVELOPE                                             = 35;
        const PAPERSIZE_ITALY_ENVELOPE                                  = 36;
        const PAPERSIZE_MONARCH_ENVELOPE                                = 37;
        const PAPERSIZE_6_3_4_ENVELOPE                                  = 38;
        const PAPERSIZE_US_STANDARD_FANFOLD                             = 39;
        const PAPERSIZE_GERMAN_STANDARD_FANFOLD                 = 40;
        const PAPERSIZE_GERMAN_LEGAL_FANFOLD                    = 41;
        const PAPERSIZE_ISO_B4                                                  = 42;
        const PAPERSIZE_JAPANESE_DOUBLE_POSTCARD                = 43;
        const PAPERSIZE_STANDARD_PAPER_1                                = 44;
        const PAPERSIZE_STANDARD_PAPER_2                                = 45;
        const PAPERSIZE_STANDARD_PAPER_3                                = 46;
        const PAPERSIZE_INVITE_ENVELOPE                                 = 47;
        const PAPERSIZE_LETTER_EXTRA_PAPER                              = 48;
        const PAPERSIZE_LEGAL_EXTRA_PAPER                               = 49;
        const PAPERSIZE_TABLOID_EXTRA_PAPER                             = 50;
        const PAPERSIZE_A4_EXTRA_PAPER                                  = 51;
        const PAPERSIZE_LETTER_TRANSVERSE_PAPER                 = 52;
        const PAPERSIZE_A4_TRANSVERSE_PAPER                             = 53;
        const PAPERSIZE_LETTER_EXTRA_TRANSVERSE_PAPER   = 54;
        const PAPERSIZE_SUPERA_SUPERA_A4_PAPER                  = 55;
        const PAPERSIZE_SUPERB_SUPERB_A3_PAPER                  = 56;
        const PAPERSIZE_LETTER_PLUS_PAPER                               = 57;
        const PAPERSIZE_A4_PLUS_PAPER                                   = 58;
        const PAPERSIZE_A5_TRANSVERSE_PAPER                             = 59;
        const PAPERSIZE_JIS_B5_TRANSVERSE_PAPER                 = 60;
        const PAPERSIZE_A3_EXTRA_PAPER                                  = 61;
        const PAPERSIZE_A5_EXTRA_PAPER                                  = 62;
        const PAPERSIZE_ISO_B5_EXTRA_PAPER                              = 63;
        const PAPERSIZE_A2_PAPER                                                = 64;
        const PAPERSIZE_A3_TRANSVERSE_PAPER                             = 65;
        const PAPERSIZE_A3_EXTRA_TRANSVERSE_PAPER               = 66;

        /* Page orientation */
        const ORIENTATION_DEFAULT       = 'default';
        const ORIENTATION_LANDSCAPE     = 'landscape';
        const ORIENTATION_PORTRAIT      = 'portrait';

        /* Print Range Set Method */
        const SETPRINTRANGE_OVERWRITE   = 'O';
        const SETPRINTRANGE_INSERT              = 'I';


        /**
         * Paper size
         *
         * @var int
         */
        private $_paperSize             = PHPExcel_Worksheet_PageSetup::PAPERSIZE_LETTER;

        /**
         * Orientation
         *
         * @var string
         */
        private $_orientation   = PHPExcel_Worksheet_PageSetup::ORIENTATION_DEFAULT;

        /**
         * Scale (Print Scale)
         *
         * Print scaling. Valid values range from 10 to 400
         * This setting is overridden when fitToWidth and/or fitToHeight are in use
         *
         * @var int?
         */
        private $_scale                 = 100;

        /**
          * Fit To Page
          * Whether scale or fitToWith / fitToHeight applies
          *
          * @var boolean
          */
        private $_fitToPage             = FALSE;

        /**
          * Fit To Height
          * Number of vertical pages to fit on
          *
          * @var int?
          */
        private $_fitToHeight   = 1;

        /**
          * Fit To Width
          * Number of horizontal pages to fit on
          *
          * @var int?
          */
        private $_fitToWidth    = 1;

        /**
         * Columns to repeat at left
         *
         * @var array Containing start column and end column, empty array if option unset
         */
        private $_columnsToRepeatAtLeft = array('', '');

        /**
         * Rows to repeat at top
         *
         * @var array Containing start row number and end row number, empty array if option unset
         */
        private $_rowsToRepeatAtTop = array(0, 0);

        /**
         * Center page horizontally
         *
         * @var boolean
         */
        private $_horizontalCentered = FALSE;

        /**
         * Center page vertically
         *
         * @var boolean
         */
        private $_verticalCentered = FALSE;

        /**
         * Print area
         *
         * @var string
         */
        private $_printArea = NULL;

        /**
         * First page number
         *
         * @var int
         */
        private $_firstPageNumber = NULL;

    /**
     * Create a new PHPExcel_Worksheet_PageSetup
     */
    public function __construct()
    {
    }

    /**
     * Get Paper Size
     *
     * @return int
     */
    public function getPaperSize() {
        return $this->_paperSize;
    }

    /**
     * Set Paper Size
     *
     * @param int $pValue
     * @return PHPExcel_Worksheet_PageSetup
     */
    public function setPaperSize($pValue = PHPExcel_Worksheet_PageSetup::PAPERSIZE_LETTER) {
        $this->_paperSize = $pValue;
        return $this;
    }

    /**
     * Get Orientation
     *
     * @return string
     */
    public function getOrientation() {
        return $this->_orientation;
    }

    /**
     * Set Orientation
     *
     * @param string $pValue
     * @return PHPExcel_Worksheet_PageSetup
     */
    public function setOrientation($pValue = PHPExcel_Worksheet_PageSetup::ORIENTATION_DEFAULT) {
        $this->_orientation = $pValue;
        return $this;
    }

        /**
         * Get Scale
         *
         * @return int?
         */
        public function getScale() {
                return $this->_scale;
        }

        /**
         * Set Scale
         *
         * Print scaling. Valid values range from 10 to 400
         * This setting is overridden when fitToWidth and/or fitToHeight are in use
         *
         * @param       int?    $pValue
         * @param boolean       $pUpdate        Update fitToPage so scaling applies rather than fitToHeight / fitToWidth
         * @return PHPExcel_Worksheet_PageSetup
         * @throws      PHPExcel_Exception
         */
        public function setScale($pValue = 100, $pUpdate = true) {
                // Microsoft Office Excel 2007 only allows setting a scale between 10 and 400 via the user interface,
                // but it is apparently still able to handle any scale >= 0, where 0 results in 100
                if (($pValue >= 0) || is_null($pValue)) {
                        $this->_scale = $pValue;
                        if ($pUpdate) {
                                $this->_fitToPage = false;
                        }
                } else {
                        throw new PHPExcel_Exception("Scale must not be negative");
                }
                return $this;
        }

        /**
         * Get Fit To Page
         *
         * @return boolean
         */
        public function getFitToPage() {
                return $this->_fitToPage;
        }

        /**
         * Set Fit To Page
         *
         * @param boolean $pValue
         * @return PHPExcel_Worksheet_PageSetup
         */
        public function setFitToPage($pValue = TRUE) {
                $this->_fitToPage = $pValue;
                return $this;
        }

        /**
         * Get Fit To Height
         *
         * @return int?
         */
        public function getFitToHeight() {
                return $this->_fitToHeight;
        }

        /**
         * Set Fit To Height
         *
         * @param int? $pValue
         * @param boolean $pUpdate Update fitToPage so it applies rather than scaling
         * @return PHPExcel_Worksheet_PageSetup
         */
        public function setFitToHeight($pValue = 1, $pUpdate = TRUE) {
                $this->_fitToHeight = $pValue;
                if ($pUpdate) {
                        $this->_fitToPage = TRUE;
                }
                return $this;
        }

        /**
         * Get Fit To Width
         *
         * @return int?
         */
        public function getFitToWidth() {
                return $this->_fitToWidth;
        }

        /**
         * Set Fit To Width
         *
         * @param int? $pValue
         * @param boolean $pUpdate Update fitToPage so it applies rather than scaling
         * @return PHPExcel_Worksheet_PageSetup
         */
        public function setFitToWidth($pValue = 1, $pUpdate = TRUE) {
                $this->_fitToWidth = $pValue;
                if ($pUpdate) {
                        $this->_fitToPage = TRUE;
                }
                return $this;
        }

        /**
         * Is Columns to repeat at left set?
         *
         * @return boolean
         */
        public function isColumnsToRepeatAtLeftSet() {
                if (is_array($this->_columnsToRepeatAtLeft)) {
                        if ($this->_columnsToRepeatAtLeft[0] != '' && $this->_columnsToRepeatAtLeft[1] != '') {
                                return true;
                        }
                }

                return false;
        }

        /**
         * Get Columns to repeat at left
         *
         * @return array Containing start column and end column, empty array if option unset
         */
        public function getColumnsToRepeatAtLeft() {
                return $this->_columnsToRepeatAtLeft;
        }

        /**
         * Set Columns to repeat at left
         *
         * @param array $pValue Containing start column and end column, empty array if option unset
         * @return PHPExcel_Worksheet_PageSetup
         */
        public function setColumnsToRepeatAtLeft($pValue = null) {
                if (is_array($pValue)) {
                        $this->_columnsToRepeatAtLeft = $pValue;
                }
                return $this;
        }

        /**
         * Set Columns to repeat at left by start and end
         *
         * @param string $pStart
         * @param string $pEnd
         * @return PHPExcel_Worksheet_PageSetup
         */
        public function setColumnsToRepeatAtLeftByStartAndEnd($pStart = 'A', $pEnd = 'A') {
                $this->_columnsToRepeatAtLeft = array($pStart, $pEnd);
                return $this;
        }

        /**
         * Is Rows to repeat at top set?
         *
         * @return boolean
         */
        public function isRowsToRepeatAtTopSet() {
                if (is_array($this->_rowsToRepeatAtTop)) {
                        if ($this->_rowsToRepeatAtTop[0] != 0 && $this->_rowsToRepeatAtTop[1] != 0) {
                                return true;
                        }
                }

                return false;
        }

        /**
         * Get Rows to repeat at top
         *
         * @return array Containing start column and end column, empty array if option unset
         */
        public function getRowsToRepeatAtTop() {
                return $this->_rowsToRepeatAtTop;
        }

        /**
         * Set Rows to repeat at top
         *
         * @param array $pValue Containing start column and end column, empty array if option unset
         * @return PHPExcel_Worksheet_PageSetup
         */
        public function setRowsToRepeatAtTop($pValue = null) {
                if (is_array($pValue)) {
                        $this->_rowsToRepeatAtTop = $pValue;
                }
                return $this;
        }

        /**
         * Set Rows to repeat at top by start and end
         *
         * @param int $pStart
         * @param int $pEnd
         * @return PHPExcel_Worksheet_PageSetup
         */
        public function setRowsToRepeatAtTopByStartAndEnd($pStart = 1, $pEnd = 1) {
                $this->_rowsToRepeatAtTop = array($pStart, $pEnd);
                return $this;
        }

        /**
         * Get center page horizontally
         *
         * @return bool
         */
        public function getHorizontalCentered() {
                return $this->_horizontalCentered;
        }

        /**
         * Set center page horizontally
         *
         * @param bool $value
         * @return PHPExcel_Worksheet_PageSetup
         */
        public function setHorizontalCentered($value = false) {
                $this->_horizontalCentered = $value;
                return $this;
        }

        /**
         * Get center page vertically
         *
         * @return bool
         */
        public function getVerticalCentered() {
                return $this->_verticalCentered;
        }

        /**
         * Set center page vertically
         *
         * @param bool $value
         * @return PHPExcel_Worksheet_PageSetup
         */
        public function setVerticalCentered($value = false) {
                $this->_verticalCentered = $value;
                return $this;
        }

        /**
         *      Get print area
         *
         * @param       int             $index  Identifier for a specific print area range if several ranges have been set
         *                                                      Default behaviour, or a index value of 0, will return all ranges as a comma-separated string
         *                                                      Otherwise, the specific range identified by the value of $index will be returned
         *                                                      Print areas are numbered from 1
         * @throws      PHPExcel_Exception
         * @return      string
         */
        public function getPrintArea($index = 0) {
                if ($index == 0) {
                        return $this->_printArea;
                }
                $printAreas = explode(',',$this->_printArea);
                if (isset($printAreas[$index-1])) {
                        return $printAreas[$index-1];
                }
                throw new PHPExcel_Exception("Requested Print Area does not exist");
        }

        /**
         * Is print area set?
         *
         * @param       int             $index  Identifier for a specific print area range if several ranges have been set
         *                                                      Default behaviour, or an index value of 0, will identify whether any print range is set
         *                                                      Otherwise, existence of the range identified by the value of $index will be returned
         *                                                      Print areas are numbered from 1
         * @return      boolean
         */
        public function isPrintAreaSet($index = 0) {
                if ($index == 0) {
                        return !is_null($this->_printArea);
                }
                $printAreas = explode(',',$this->_printArea);
                return isset($printAreas[$index-1]);
        }

        /**
         * Clear a print area
         *
         * @param       int             $index  Identifier for a specific print area range if several ranges have been set
         *                                                      Default behaviour, or an index value of 0, will clear all print ranges that are set
         *                                                      Otherwise, the range identified by the value of $index will be removed from the series
         *                                                      Print areas are numbered from 1
         * @return      PHPExcel_Worksheet_PageSetup
         */
        public function clearPrintArea($index = 0) {
                if ($index == 0) {
                        $this->_printArea = NULL;
                } else {
                        $printAreas = explode(',',$this->_printArea);
                        if (isset($printAreas[$index-1])) {
                                unset($printAreas[$index-1]);
                                $this->_printArea = implode(',',$printAreas);
                        }
                }

        return $this;
        }

        /**
         * Set print area. e.g. 'A1:D10' or 'A1:D10,G5:M20'
         *
         * @param       string  $value
         * @param       int             $index  Identifier for a specific print area range allowing several ranges to be set
         *                                                      When the method is "O"verwrite, then a positive integer index will overwrite that indexed
         *                                                              entry in the print areas list; a negative index value will identify which entry to
         *                                                              overwrite working bacward through the print area to the list, with the last entry as -1.
         *                                                              Specifying an index value of 0, will overwrite <b>all</b> existing print ranges.
         *                                                      When the method is "I"nsert, then a positive index will insert after that indexed entry in
         *                                                              the print areas list, while a negative index will insert before the indexed entry.
         *                                                              Specifying an index value of 0, will always append the new print range at the end of the
         *                                                              list.
         *                                                      Print areas are numbered from 1
         * @param       string  $method Determines the method used when setting multiple print areas
         *                                                      Default behaviour, or the "O" method, overwrites existing print area
         *                                                      The "I" method, inserts the new print area before any specified index, or at the end of the list
         * @return      PHPExcel_Worksheet_PageSetup
         * @throws      PHPExcel_Exception
         */
        public function setPrintArea($value, $index = 0, $method = self::SETPRINTRANGE_OVERWRITE) {
                if (strpos($value,'!') !== false) {
                        throw new PHPExcel_Exception('Cell coordinate must not specify a worksheet.');
                } elseif (strpos($value,':') === false) {
                        throw new PHPExcel_Exception('Cell coordinate must be a range of cells.');
                } elseif (strpos($value,'$') !== false) {
                        throw new PHPExcel_Exception('Cell coordinate must not be absolute.');
                }
                $value = strtoupper($value);

                if ($method == self::SETPRINTRANGE_OVERWRITE) {
                        if ($index == 0) {
                                $this->_printArea = $value;
                        } else {
                                $printAreas = explode(',',$this->_printArea);
                                if($index < 0) {
                                        $index = count($printAreas) - abs($index) + 1;
                                }
                                if (($index <= 0) || ($index > count($printAreas))) {
                                throw new PHPExcel_Exception('Invalid index for setting print range.');
                                }
                                $printAreas[$index-1] = $value;
                                $this->_printArea = implode(',',$printAreas);
                        }
                } elseif($method == self::SETPRINTRANGE_INSERT) {
                        if ($index == 0) {
                                $this->_printArea .= ($this->_printArea == '') ? $value : ','.$value;
                        } else {
                                $printAreas = explode(',',$this->_printArea);
                                if($index < 0) {
                                        $index = abs($index) - 1;
                                }
                                if ($index > count($printAreas)) {
                                throw new PHPExcel_Exception('Invalid index for setting print range.');
                                }
                                $printAreas = array_merge(array_slice($printAreas,0,$index),array($value),array_slice($printAreas,$index));
                                $this->_printArea = implode(',',$printAreas);
                        }
                } else {
                throw new PHPExcel_Exception('Invalid method for setting print range.');
                }

        return $this;
        }

        /**
         * Add a new print area (e.g. 'A1:D10' or 'A1:D10,G5:M20') to the list of print areas
         *
         * @param       string  $value
         * @param       int             $index  Identifier for a specific print area range allowing several ranges to be set
         *                                                      A positive index will insert after that indexed entry in the print areas list, while a
         *                                                              negative index will insert before the indexed entry.
         *                                                              Specifying an index value of 0, will always append the new print range at the end of the
         *                                                              list.
         *                                                      Print areas are numbered from 1
         * @return      PHPExcel_Worksheet_PageSetup
         * @throws      PHPExcel_Exception
         */
        public function addPrintArea($value, $index = -1) {
                return $this->setPrintArea($value, $index, self::SETPRINTRANGE_INSERT);
        }

        /**
         * Set print area
         *
         * @param       int             $column1        Column 1
         * @param       int             $row1           Row 1
         * @param       int             $column2        Column 2
         * @param       int             $row2           Row 2
         * @param       int             $index          Identifier for a specific print area range allowing several ranges to be set
         *                                                              When the method is "O"verwrite, then a positive integer index will overwrite that indexed
         *                                                                      entry in the print areas list; a negative index value will identify which entry to
         *                                                                      overwrite working bacward through the print area to the list, with the last entry as -1.
         *                                                                      Specifying an index value of 0, will overwrite <b>all</b> existing print ranges.
         *                                                              When the method is "I"nsert, then a positive index will insert after that indexed entry in
         *                                                                      the print areas list, while a negative index will insert before the indexed entry.
         *                                                                      Specifying an index value of 0, will always append the new print range at the end of the
         *                                                                      list.
         *                                                              Print areas are numbered from 1
         * @param       string  $method         Determines the method used when setting multiple print areas
         *                                                              Default behaviour, or the "O" method, overwrites existing print area
         *                                                              The "I" method, inserts the new print area before any specified index, or at the end of the list
         * @return      PHPExcel_Worksheet_PageSetup
         * @throws      PHPExcel_Exception
         */
    public function setPrintAreaByColumnAndRow($column1, $row1, $column2, $row2, $index = 0, $method = self::SETPRINTRANGE_OVERWRITE)
    {
        return $this->setPrintArea(PHPExcel_Cell::stringFromColumnIndex($column1) . $row1 . ':' . PHPExcel_Cell::stringFromColumnIndex($column2) . $row2, $index, $method);
    }

        /**
         * Add a new print area to the list of print areas
         *
         * @param       int             $column1        Start Column for the print area
         * @param       int             $row1           Start Row for the print area
         * @param       int             $column2        End Column for the print area
         * @param       int             $row2           End Row for the print area
         * @param       int             $index          Identifier for a specific print area range allowing several ranges to be set
         *                                                              A positive index will insert after that indexed entry in the print areas list, while a
         *                                                                      negative index will insert before the indexed entry.
         *                                                                      Specifying an index value of 0, will always append the new print range at the end of the
         *                                                                      list.
         *                                                              Print areas are numbered from 1
         * @return      PHPExcel_Worksheet_PageSetup
         * @throws      PHPExcel_Exception
         */
    public function addPrintAreaByColumnAndRow($column1, $row1, $column2, $row2, $index = -1)
    {
        return $this->setPrintArea(PHPExcel_Cell::stringFromColumnIndex($column1) . $row1 . ':' . PHPExcel_Cell::stringFromColumnIndex($column2) . $row2, $index, self::SETPRINTRANGE_INSERT);
        }

        /**
         * Get first page number
         *
         * @return int
         */
    public function getFirstPageNumber() {
                return $this->_firstPageNumber;
    }

    /**
     * Set first page number
     *
     * @param int $value
     * @return PHPExcel_Worksheet_HeaderFooter
     */
    public function setFirstPageNumber($value = null) {
                $this->_firstPageNumber = $value;
                return $this;
    }

    /**
     * Reset first page number
     *
     * @return PHPExcel_Worksheet_HeaderFooter
     */
    public function resetFirstPageNumber() {
                return $this->setFirstPageNumber(null);
    }

        /**
         * Implement PHP __clone to create a deep clone, not just a shallow copy.
         */
        public function __clone() {
                $vars = get_object_vars($this);
                foreach ($vars as $key => $value) {
                        if (is_object($value)) {
                                $this->$key = clone $value;
                        } else {
                                $this->$key = $value;
                        }
                }
        }
}