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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_Writer_Excel2007
 * @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_Writer_Excel2007_Theme
 *
 * @category   PHPExcel
 * @package    PHPExcel_Writer_Excel2007
 * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_Writer_Excel2007_Theme extends PHPExcel_Writer_Excel2007_WriterPart
{
        /**
         * Map of Major fonts to write
         * @static      array of string
         *
         */
        private static $_majorFonts = array(
                                        'Jpan' => 'MS Pゴシック',
                                        'Hang' => '맑은 고딕',
                                        'Hans' => '宋体',
                                        'Hant' => '新細明體',
                                        'Arab' => 'Times New Roman',
                                        'Hebr' => 'Times New Roman',
                                        'Thai' => 'Tahoma',
                                        'Ethi' => 'Nyala',
                                        'Beng' => 'Vrinda',
                                        'Gujr' => 'Shruti',
                                        'Khmr' => 'MoolBoran',
                                        'Knda' => 'Tunga',
                                        'Guru' => 'Raavi',
                                        'Cans' => 'Euphemia',
                                        'Cher' => 'Plantagenet Cherokee',
                                        'Yiii' => 'Microsoft Yi Baiti',
                                        'Tibt' => 'Microsoft Himalaya',
                                        'Thaa' => 'MV Boli',
                                        'Deva' => 'Mangal',
                                        'Telu' => 'Gautami',
                                        'Taml' => 'Latha',
                                        'Syrc' => 'Estrangelo Edessa',
                                        'Orya' => 'Kalinga',
                                        'Mlym' => 'Kartika',
                                        'Laoo' => 'DokChampa',
                                        'Sinh' => 'Iskoola Pota',
                                        'Mong' => 'Mongolian Baiti',
                                        'Viet' => 'Times New Roman',
                                        'Uigh' => 'Microsoft Uighur',
                                        'Geor' => 'Sylfaen',
                        );

        /**
         * Map of Minor fonts to write
         * @static      array of string
         *
         */
        private static $_minorFonts = array(
                                        'Jpan' => 'MS Pゴシック',
                                        'Hang' => '맑은 고딕',
                                        'Hans' => '宋体',
                                        'Hant' => '新細明體',
                                        'Arab' => 'Arial',
                                        'Hebr' => 'Arial',
                                        'Thai' => 'Tahoma',
                                        'Ethi' => 'Nyala',
                                        'Beng' => 'Vrinda',
                                        'Gujr' => 'Shruti',
                                        'Khmr' => 'DaunPenh',
                                        'Knda' => 'Tunga',
                                        'Guru' => 'Raavi',
                                        'Cans' => 'Euphemia',
                                        'Cher' => 'Plantagenet Cherokee',
                                        'Yiii' => 'Microsoft Yi Baiti',
                                        'Tibt' => 'Microsoft Himalaya',
                                        'Thaa' => 'MV Boli',
                                        'Deva' => 'Mangal',
                                        'Telu' => 'Gautami',
                                        'Taml' => 'Latha',
                                        'Syrc' => 'Estrangelo Edessa',
                                        'Orya' => 'Kalinga',
                                        'Mlym' => 'Kartika',
                                        'Laoo' => 'DokChampa',
                                        'Sinh' => 'Iskoola Pota',
                                        'Mong' => 'Mongolian Baiti',
                                        'Viet' => 'Arial',
                                        'Uigh' => 'Microsoft Uighur',
                                        'Geor' => 'Sylfaen',
                        );

        /**
         * Map of core colours
         * @static      array of string
         *
         */
                private static $_colourScheme = array(
                                        'dk2'           => '1F497D',
                                        'lt2'           => 'EEECE1',
                                        'accent1'       => '4F81BD',
                                        'accent2'       => 'C0504D',
                                        'accent3'       => '9BBB59',
                                        'accent4'       => '8064A2',
                                        'accent5'       => '4BACC6',
                                        'accent6'       => 'F79646',
                                        'hlink'         => '0000FF',
                                        'folHlink'      => '800080',
                        );
                        
        /**
         * Write theme to XML format
         *
         * @param       PHPExcel        $pPHPExcel
         * @return      string          XML Output
         * @throws      PHPExcel_Writer_Exception
         */
        public function writeTheme(PHPExcel $pPHPExcel = null)
        {
                        // Create XML writer
                        $objWriter = null;
                        if ($this->getParentWriter()->getUseDiskCaching()) {
                                $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_DISK, $this->getParentWriter()->getDiskCachingDirectory());
                        } else {
                                $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_MEMORY);
                        }

                        // XML header
                        $objWriter->startDocument('1.0','UTF-8','yes');

                        // a:theme
                        $objWriter->startElement('a:theme');
                        $objWriter->writeAttribute('xmlns:a', 'http://schemas.openxmlformats.org/drawingml/2006/main');
                        $objWriter->writeAttribute('name', 'Office Theme');

                                // a:themeElements
                                $objWriter->startElement('a:themeElements');

                                        // a:clrScheme
                                        $objWriter->startElement('a:clrScheme');
                                        $objWriter->writeAttribute('name', 'Office');

                                                // a:dk1
                                                $objWriter->startElement('a:dk1');

                                                        // a:sysClr
                                                        $objWriter->startElement('a:sysClr');
                                                        $objWriter->writeAttribute('val', 'windowText');
                                                        $objWriter->writeAttribute('lastClr', '000000');
                                                        $objWriter->endElement();

                                                $objWriter->endElement();

                                                // a:lt1
                                                $objWriter->startElement('a:lt1');

                                                        // a:sysClr
                                                        $objWriter->startElement('a:sysClr');
                                                        $objWriter->writeAttribute('val', 'window');
                                                        $objWriter->writeAttribute('lastClr', 'FFFFFF');
                                                        $objWriter->endElement();

                                                $objWriter->endElement();

                                                // a:dk2
                                                $this->_writeColourScheme($objWriter);

                                        $objWriter->endElement();

                                        // a:fontScheme
                                        $objWriter->startElement('a:fontScheme');
                                        $objWriter->writeAttribute('name', 'Office');

                                                // a:majorFont
                                                $objWriter->startElement('a:majorFont');
                                                        $this->_writeFonts($objWriter, 'Cambria', self::$_majorFonts);
                                                $objWriter->endElement();

                                                // a:minorFont
                                                $objWriter->startElement('a:minorFont');
                                                        $this->_writeFonts($objWriter, 'Calibri', self::$_minorFonts);
                                                $objWriter->endElement();

                                        $objWriter->endElement();

                                        // a:fmtScheme
                                        $objWriter->startElement('a:fmtScheme');
                                        $objWriter->writeAttribute('name', 'Office');

                                                // a:fillStyleLst
                                                $objWriter->startElement('a:fillStyleLst');

                                                        // a:solidFill
                                                        $objWriter->startElement('a:solidFill');

                                                                // a:schemeClr
                                                                $objWriter->startElement('a:schemeClr');
                                                                $objWriter->writeAttribute('val', 'phClr');
                                                                $objWriter->endElement();

                                                        $objWriter->endElement();

                                                        // a:gradFill
                                                        $objWriter->startElement('a:gradFill');
                                                        $objWriter->writeAttribute('rotWithShape', '1');

                                                                // a:gsLst
                                                                $objWriter->startElement('a:gsLst');

                                                                        // a:gs
                                                                        $objWriter->startElement('a:gs');
                                                                        $objWriter->writeAttribute('pos', '0');

                                                                                // a:schemeClr
                                                                                $objWriter->startElement('a:schemeClr');
                                                                                $objWriter->writeAttribute('val', 'phClr');

                                                                                        // a:tint
                                                                                        $objWriter->startElement('a:tint');
                                                                                        $objWriter->writeAttribute('val', '50000');
                                                                                        $objWriter->endElement();

                                                                                        // a:satMod
                                                                                        $objWriter->startElement('a:satMod');
                                                                                        $objWriter->writeAttribute('val', '300000');
                                                                                        $objWriter->endElement();

                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                        // a:gs
                                                                        $objWriter->startElement('a:gs');
                                                                        $objWriter->writeAttribute('pos', '35000');

                                                                                // a:schemeClr
                                                                                $objWriter->startElement('a:schemeClr');
                                                                                $objWriter->writeAttribute('val', 'phClr');

                                                                                        // a:tint
                                                                                        $objWriter->startElement('a:tint');
                                                                                        $objWriter->writeAttribute('val', '37000');
                                                                                        $objWriter->endElement();

                                                                                        // a:satMod
                                                                                        $objWriter->startElement('a:satMod');
                                                                                        $objWriter->writeAttribute('val', '300000');
                                                                                        $objWriter->endElement();

                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                        // a:gs
                                                                        $objWriter->startElement('a:gs');
                                                                        $objWriter->writeAttribute('pos', '100000');

                                                                                // a:schemeClr
                                                                                $objWriter->startElement('a:schemeClr');
                                                                                $objWriter->writeAttribute('val', 'phClr');

                                                                                        // a:tint
                                                                                        $objWriter->startElement('a:tint');
                                                                                        $objWriter->writeAttribute('val', '15000');
                                                                                        $objWriter->endElement();

                                                                                        // a:satMod
                                                                                        $objWriter->startElement('a:satMod');
                                                                                        $objWriter->writeAttribute('val', '350000');
                                                                                        $objWriter->endElement();

                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                $objWriter->endElement();

                                                                // a:lin
                                                                $objWriter->startElement('a:lin');
                                                                $objWriter->writeAttribute('ang', '16200000');
                                                                $objWriter->writeAttribute('scaled', '1');
                                                                $objWriter->endElement();

                                                        $objWriter->endElement();

                                                        // a:gradFill
                                                        $objWriter->startElement('a:gradFill');
                                                        $objWriter->writeAttribute('rotWithShape', '1');

                                                                // a:gsLst
                                                                $objWriter->startElement('a:gsLst');

                                                                        // a:gs
                                                                        $objWriter->startElement('a:gs');
                                                                        $objWriter->writeAttribute('pos', '0');

                                                                                // a:schemeClr
                                                                                $objWriter->startElement('a:schemeClr');
                                                                                $objWriter->writeAttribute('val', 'phClr');

                                                                                        // a:shade
                                                                                        $objWriter->startElement('a:shade');
                                                                                        $objWriter->writeAttribute('val', '51000');
                                                                                        $objWriter->endElement();

                                                                                        // a:satMod
                                                                                        $objWriter->startElement('a:satMod');
                                                                                        $objWriter->writeAttribute('val', '130000');
                                                                                        $objWriter->endElement();

                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                        // a:gs
                                                                        $objWriter->startElement('a:gs');
                                                                        $objWriter->writeAttribute('pos', '80000');

                                                                                // a:schemeClr
                                                                                $objWriter->startElement('a:schemeClr');
                                                                                $objWriter->writeAttribute('val', 'phClr');

                                                                                        // a:shade
                                                                                        $objWriter->startElement('a:shade');
                                                                                        $objWriter->writeAttribute('val', '93000');
                                                                                        $objWriter->endElement();

                                                                                        // a:satMod
                                                                                        $objWriter->startElement('a:satMod');
                                                                                        $objWriter->writeAttribute('val', '130000');
                                                                                        $objWriter->endElement();

                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                        // a:gs
                                                                        $objWriter->startElement('a:gs');
                                                                        $objWriter->writeAttribute('pos', '100000');

                                                                                // a:schemeClr
                                                                                $objWriter->startElement('a:schemeClr');
                                                                                $objWriter->writeAttribute('val', 'phClr');

                                                                                        // a:shade
                                                                                        $objWriter->startElement('a:shade');
                                                                                        $objWriter->writeAttribute('val', '94000');
                                                                                        $objWriter->endElement();

                                                                                        // a:satMod
                                                                                        $objWriter->startElement('a:satMod');
                                                                                        $objWriter->writeAttribute('val', '135000');
                                                                                        $objWriter->endElement();

                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                $objWriter->endElement();

                                                                // a:lin
                                                                $objWriter->startElement('a:lin');
                                                                $objWriter->writeAttribute('ang', '16200000');
                                                                $objWriter->writeAttribute('scaled', '0');
                                                                $objWriter->endElement();

                                                        $objWriter->endElement();

                                                $objWriter->endElement();

                                                // a:lnStyleLst
                                                $objWriter->startElement('a:lnStyleLst');

                                                        // a:ln
                                                        $objWriter->startElement('a:ln');
                                                        $objWriter->writeAttribute('w', '9525');
                                                        $objWriter->writeAttribute('cap', 'flat');
                                                        $objWriter->writeAttribute('cmpd', 'sng');
                                                        $objWriter->writeAttribute('algn', 'ctr');

                                                                // a:solidFill
                                                                $objWriter->startElement('a:solidFill');

                                                                        // a:schemeClr
                                                                        $objWriter->startElement('a:schemeClr');
                                                                        $objWriter->writeAttribute('val', 'phClr');

                                                                                        // a:shade
                                                                                        $objWriter->startElement('a:shade');
                                                                                        $objWriter->writeAttribute('val', '95000');
                                                                                        $objWriter->endElement();

                                                                                        // a:satMod
                                                                                        $objWriter->startElement('a:satMod');
                                                                                        $objWriter->writeAttribute('val', '105000');
                                                                                        $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                $objWriter->endElement();

                                                                // a:prstDash
                                                                $objWriter->startElement('a:prstDash');
                                                                $objWriter->writeAttribute('val', 'solid');
                                                                $objWriter->endElement();

                                                        $objWriter->endElement();

                                                        // a:ln
                                                        $objWriter->startElement('a:ln');
                                                        $objWriter->writeAttribute('w', '25400');
                                                        $objWriter->writeAttribute('cap', 'flat');
                                                        $objWriter->writeAttribute('cmpd', 'sng');
                                                        $objWriter->writeAttribute('algn', 'ctr');

                                                                // a:solidFill
                                                                $objWriter->startElement('a:solidFill');

                                                                        // a:schemeClr
                                                                        $objWriter->startElement('a:schemeClr');
                                                                        $objWriter->writeAttribute('val', 'phClr');
                                                                        $objWriter->endElement();

                                                                $objWriter->endElement();

                                                                // a:prstDash
                                                                $objWriter->startElement('a:prstDash');
                                                                $objWriter->writeAttribute('val', 'solid');
                                                                $objWriter->endElement();

                                                        $objWriter->endElement();

                                                        // a:ln
                                                        $objWriter->startElement('a:ln');
                                                        $objWriter->writeAttribute('w', '38100');
                                                        $objWriter->writeAttribute('cap', 'flat');
                                                        $objWriter->writeAttribute('cmpd', 'sng');
                                                        $objWriter->writeAttribute('algn', 'ctr');

                                                                // a:solidFill
                                                                $objWriter->startElement('a:solidFill');

                                                                        // a:schemeClr
                                                                        $objWriter->startElement('a:schemeClr');
                                                                        $objWriter->writeAttribute('val', 'phClr');
                                                                        $objWriter->endElement();

                                                                $objWriter->endElement();

                                                                // a:prstDash
                                                                $objWriter->startElement('a:prstDash');
                                                                $objWriter->writeAttribute('val', 'solid');
                                                                $objWriter->endElement();

                                                        $objWriter->endElement();

                                                $objWriter->endElement();



                                                // a:effectStyleLst
                                                $objWriter->startElement('a:effectStyleLst');

                                                        // a:effectStyle
                                                        $objWriter->startElement('a:effectStyle');

                                                                // a:effectLst
                                                                $objWriter->startElement('a:effectLst');

                                                                        // a:outerShdw
                                                                        $objWriter->startElement('a:outerShdw');
                                                                        $objWriter->writeAttribute('blurRad', '40000');
                                                                        $objWriter->writeAttribute('dist', '20000');
                                                                        $objWriter->writeAttribute('dir', '5400000');
                                                                        $objWriter->writeAttribute('rotWithShape', '0');

                                                                                // a:srgbClr
                                                                                $objWriter->startElement('a:srgbClr');
                                                                                $objWriter->writeAttribute('val', '000000');

                                                                                        // a:alpha
                                                                                        $objWriter->startElement('a:alpha');
                                                                                        $objWriter->writeAttribute('val', '38000');
                                                                                        $objWriter->endElement();

                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                $objWriter->endElement();

                                                        $objWriter->endElement();

                                                        // a:effectStyle
                                                        $objWriter->startElement('a:effectStyle');

                                                                // a:effectLst
                                                                $objWriter->startElement('a:effectLst');

                                                                        // a:outerShdw
                                                                        $objWriter->startElement('a:outerShdw');
                                                                        $objWriter->writeAttribute('blurRad', '40000');
                                                                        $objWriter->writeAttribute('dist', '23000');
                                                                        $objWriter->writeAttribute('dir', '5400000');
                                                                        $objWriter->writeAttribute('rotWithShape', '0');

                                                                                // a:srgbClr
                                                                                $objWriter->startElement('a:srgbClr');
                                                                                $objWriter->writeAttribute('val', '000000');

                                                                                        // a:alpha
                                                                                        $objWriter->startElement('a:alpha');
                                                                                        $objWriter->writeAttribute('val', '35000');
                                                                                        $objWriter->endElement();

                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                $objWriter->endElement();

                                                        $objWriter->endElement();

                                                        // a:effectStyle
                                                        $objWriter->startElement('a:effectStyle');

                                                                // a:effectLst
                                                                $objWriter->startElement('a:effectLst');

                                                                        // a:outerShdw
                                                                        $objWriter->startElement('a:outerShdw');
                                                                        $objWriter->writeAttribute('blurRad', '40000');
                                                                        $objWriter->writeAttribute('dist', '23000');
                                                                        $objWriter->writeAttribute('dir', '5400000');
                                                                        $objWriter->writeAttribute('rotWithShape', '0');

                                                                                // a:srgbClr
                                                                                $objWriter->startElement('a:srgbClr');
                                                                                $objWriter->writeAttribute('val', '000000');

                                                                                        // a:alpha
                                                                                        $objWriter->startElement('a:alpha');
                                                                                        $objWriter->writeAttribute('val', '35000');
                                                                                        $objWriter->endElement();

                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                $objWriter->endElement();

                                                                // a:scene3d
                                                                $objWriter->startElement('a:scene3d');

                                                                        // a:camera
                                                                        $objWriter->startElement('a:camera');
                                                                        $objWriter->writeAttribute('prst', 'orthographicFront');

                                                                                // a:rot
                                                                                $objWriter->startElement('a:rot');
                                                                                $objWriter->writeAttribute('lat', '0');
                                                                                $objWriter->writeAttribute('lon', '0');
                                                                                $objWriter->writeAttribute('rev', '0');
                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                        // a:lightRig
                                                                        $objWriter->startElement('a:lightRig');
                                                                        $objWriter->writeAttribute('rig', 'threePt');
                                                                        $objWriter->writeAttribute('dir', 't');

                                                                                // a:rot
                                                                                $objWriter->startElement('a:rot');
                                                                                $objWriter->writeAttribute('lat', '0');
                                                                                $objWriter->writeAttribute('lon', '0');
                                                                                $objWriter->writeAttribute('rev', '1200000');
                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                $objWriter->endElement();

                                                                // a:sp3d
                                                                $objWriter->startElement('a:sp3d');

                                                                        // a:bevelT
                                                                        $objWriter->startElement('a:bevelT');
                                                                        $objWriter->writeAttribute('w', '63500');
                                                                        $objWriter->writeAttribute('h', '25400');
                                                                        $objWriter->endElement();

                                                                $objWriter->endElement();

                                                        $objWriter->endElement();

                                                $objWriter->endElement();

                                                // a:bgFillStyleLst
                                                $objWriter->startElement('a:bgFillStyleLst');

                                                        // a:solidFill
                                                        $objWriter->startElement('a:solidFill');

                                                                // a:schemeClr
                                                                $objWriter->startElement('a:schemeClr');
                                                                $objWriter->writeAttribute('val', 'phClr');
                                                                $objWriter->endElement();

                                                        $objWriter->endElement();

                                                        // a:gradFill
                                                        $objWriter->startElement('a:gradFill');
                                                        $objWriter->writeAttribute('rotWithShape', '1');

                                                                // a:gsLst
                                                                $objWriter->startElement('a:gsLst');

                                                                        // a:gs
                                                                        $objWriter->startElement('a:gs');
                                                                        $objWriter->writeAttribute('pos', '0');

                                                                                // a:schemeClr
                                                                                $objWriter->startElement('a:schemeClr');
                                                                                $objWriter->writeAttribute('val', 'phClr');

                                                                                        // a:tint
                                                                                        $objWriter->startElement('a:tint');
                                                                                        $objWriter->writeAttribute('val', '40000');
                                                                                        $objWriter->endElement();

                                                                                        // a:satMod
                                                                                        $objWriter->startElement('a:satMod');
                                                                                        $objWriter->writeAttribute('val', '350000');
                                                                                        $objWriter->endElement();

                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                        // a:gs
                                                                        $objWriter->startElement('a:gs');
                                                                        $objWriter->writeAttribute('pos', '40000');

                                                                                // a:schemeClr
                                                                                $objWriter->startElement('a:schemeClr');
                                                                                $objWriter->writeAttribute('val', 'phClr');

                                                                                        // a:tint
                                                                                        $objWriter->startElement('a:tint');
                                                                                        $objWriter->writeAttribute('val', '45000');
                                                                                        $objWriter->endElement();

                                                                                        // a:shade
                                                                                        $objWriter->startElement('a:shade');
                                                                                        $objWriter->writeAttribute('val', '99000');
                                                                                        $objWriter->endElement();

                                                                                        // a:satMod
                                                                                        $objWriter->startElement('a:satMod');
                                                                                        $objWriter->writeAttribute('val', '350000');
                                                                                        $objWriter->endElement();

                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                        // a:gs
                                                                        $objWriter->startElement('a:gs');
                                                                        $objWriter->writeAttribute('pos', '100000');

                                                                                // a:schemeClr
                                                                                $objWriter->startElement('a:schemeClr');
                                                                                $objWriter->writeAttribute('val', 'phClr');

                                                                                        // a:shade
                                                                                        $objWriter->startElement('a:shade');
                                                                                        $objWriter->writeAttribute('val', '20000');
                                                                                        $objWriter->endElement();

                                                                                        // a:satMod
                                                                                        $objWriter->startElement('a:satMod');
                                                                                        $objWriter->writeAttribute('val', '255000');
                                                                                        $objWriter->endElement();

                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                $objWriter->endElement();

                                                                // a:path
                                                                $objWriter->startElement('a:path');
                                                                $objWriter->writeAttribute('path', 'circle');

                                                                        // a:fillToRect
                                                                        $objWriter->startElement('a:fillToRect');
                                                                        $objWriter->writeAttribute('l', '50000');
                                                                        $objWriter->writeAttribute('t', '-80000');
                                                                        $objWriter->writeAttribute('r', '50000');
                                                                        $objWriter->writeAttribute('b', '180000');
                                                                        $objWriter->endElement();

                                                                $objWriter->endElement();

                                                        $objWriter->endElement();

                                                        // a:gradFill
                                                        $objWriter->startElement('a:gradFill');
                                                        $objWriter->writeAttribute('rotWithShape', '1');

                                                                // a:gsLst
                                                                $objWriter->startElement('a:gsLst');

                                                                        // a:gs
                                                                        $objWriter->startElement('a:gs');
                                                                        $objWriter->writeAttribute('pos', '0');

                                                                                // a:schemeClr
                                                                                $objWriter->startElement('a:schemeClr');
                                                                                $objWriter->writeAttribute('val', 'phClr');

                                                                                        // a:tint
                                                                                        $objWriter->startElement('a:tint');
                                                                                        $objWriter->writeAttribute('val', '80000');
                                                                                        $objWriter->endElement();

                                                                                        // a:satMod
                                                                                        $objWriter->startElement('a:satMod');
                                                                                        $objWriter->writeAttribute('val', '300000');
                                                                                        $objWriter->endElement();

                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                        // a:gs
                                                                        $objWriter->startElement('a:gs');
                                                                        $objWriter->writeAttribute('pos', '100000');

                                                                                // a:schemeClr
                                                                                $objWriter->startElement('a:schemeClr');
                                                                                $objWriter->writeAttribute('val', 'phClr');

                                                                                        // a:shade
                                                                                        $objWriter->startElement('a:shade');
                                                                                        $objWriter->writeAttribute('val', '30000');
                                                                                        $objWriter->endElement();

                                                                                        // a:satMod
                                                                                        $objWriter->startElement('a:satMod');
                                                                                        $objWriter->writeAttribute('val', '200000');
                                                                                        $objWriter->endElement();

                                                                                $objWriter->endElement();

                                                                        $objWriter->endElement();

                                                                $objWriter->endElement();

                                                                // a:path
                                                                $objWriter->startElement('a:path');
                                                                $objWriter->writeAttribute('path', 'circle');

                                                                        // a:fillToRect
                                                                        $objWriter->startElement('a:fillToRect');
                                                                        $objWriter->writeAttribute('l', '50000');
                                                                        $objWriter->writeAttribute('t', '50000');
                                                                        $objWriter->writeAttribute('r', '50000');
                                                                        $objWriter->writeAttribute('b', '50000');
                                                                        $objWriter->endElement();

                                                                $objWriter->endElement();

                                                        $objWriter->endElement();

                                                $objWriter->endElement();

                                        $objWriter->endElement();

                                $objWriter->endElement();

                                // a:objectDefaults
                                $objWriter->writeElement('a:objectDefaults', null);

                                // a:extraClrSchemeLst
                                $objWriter->writeElement('a:extraClrSchemeLst', null);

                        $objWriter->endElement();

                        // Return
                        return $objWriter->getData();
        }

        /**
         * Write fonts to XML format
         *
         * @param       PHPExcel_Shared_XMLWriter       $objWriter
         * @param       string                                          $latinFont
         * @param       array of string                         $fontSet
         * @return      string                                          XML Output
         * @throws      PHPExcel_Writer_Exception
         */
        private function _writeFonts($objWriter, $latinFont, $fontSet)
        {
                // a:latin
                $objWriter->startElement('a:latin');
                $objWriter->writeAttribute('typeface', $latinFont);
                $objWriter->endElement();

                // a:ea
                $objWriter->startElement('a:ea');
                $objWriter->writeAttribute('typeface', '');
                $objWriter->endElement();

                // a:cs
                $objWriter->startElement('a:cs');
                $objWriter->writeAttribute('typeface', '');
                $objWriter->endElement();

                foreach($fontSet as $fontScript => $typeface) {
                        $objWriter->startElement('a:font');
                                $objWriter->writeAttribute('script', $fontScript);
                                $objWriter->writeAttribute('typeface', $typeface);
                        $objWriter->endElement();
                }

        }

        /**
         * Write colour scheme to XML format
         *
         * @param       PHPExcel_Shared_XMLWriter       $objWriter
         * @return      string                                          XML Output
         * @throws      PHPExcel_Writer_Exception
         */
        private function _writeColourScheme($objWriter)
        {
                foreach(self::$_colourScheme as $colourName => $colourValue) {
                        $objWriter->startElement('a:'.$colourName);

                                $objWriter->startElement('a:srgbClr');
                                        $objWriter->writeAttribute('val', $colourValue);
                                $objWriter->endElement();

                        $objWriter->endElement();
                }
                                                
        }
}