HTML.php

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<?php
class PHPExcel_Writer_HTML extends PHPExcel_Writer_Abstract implements PHPExcel_Writer_IWriter {
        protected $_phpExcel;
 
        private $_sheetIndex    = 0;
 
        private $_imagesRoot    = '.';
 
        private $_embedImages   = FALSE;
 
        private $_useInlineCss = false;
 
        private $_cssStyles = null;
 
        private $_columnWidths = null;
 
        private $_defaultFont;
 
        private $_spansAreCalculated    = false;
 
        private $_isSpannedCell = array();
 
        private $_isBaseCell    = array();
 
        private $_isSpannedRow  = array();
 
        protected $_isPdf = false;
 
        private $_generateSheetNavigationBlock = true;
 
        public function __construct(PHPExcel $phpExcel) {
                $this->_phpExcel = $phpExcel;
                $this->_defaultFont = $this->_phpExcel->getDefaultStyle()->getFont();
        }
 
        public function save($pFilename = null) {
                // garbage collect
                $this->_phpExcel->garbageCollect();
 
                $saveDebugLog = PHPExcel_Calculation::getInstance($this->_phpExcel)->getDebugLog()->getWriteDebugLog();
                PHPExcel_Calculation::getInstance($this->_phpExcel)->getDebugLog()->setWriteDebugLog(FALSE);
                $saveArrayReturnType = PHPExcel_Calculation::getArrayReturnType();
                PHPExcel_Calculation::setArrayReturnType(PHPExcel_Calculation::RETURN_ARRAY_AS_VALUE);
 
                // Build CSS
                $this->buildCSS(!$this->_useInlineCss);
 
                // Open file
                $fileHandle = fopen($pFilename, 'wb+');
                if ($fileHandle === false) {
                        throw new PHPExcel_Writer_Exception("Could not open file $pFilename for writing.");
                }
 
                // Write headers
                fwrite($fileHandle, $this->generateHTMLHeader(!$this->_useInlineCss));
 
                // Write navigation (tabs)
                if ((!$this->_isPdf) && ($this->_generateSheetNavigationBlock)) {
                        fwrite($fileHandle, $this->generateNavigation());
                }
 
                // Write data
                fwrite($fileHandle, $this->generateSheetData());
 
                // Write footer
                fwrite($fileHandle, $this->generateHTMLFooter());
 
                // Close file
                fclose($fileHandle);
 
                PHPExcel_Calculation::setArrayReturnType($saveArrayReturnType);
                PHPExcel_Calculation::getInstance($this->_phpExcel)->getDebugLog()->setWriteDebugLog($saveDebugLog);
        }
 
        private function _mapVAlign($vAlign) {
                switch ($vAlign) {
                        case PHPExcel_Style_Alignment::VERTICAL_BOTTOM:         return 'bottom';
                        case PHPExcel_Style_Alignment::VERTICAL_TOP:            return 'top';
                        case PHPExcel_Style_Alignment::VERTICAL_CENTER:
                        case PHPExcel_Style_Alignment::VERTICAL_JUSTIFY:        return 'middle';
                        default: return 'baseline';
                }
        }
 
        private function _mapHAlign($hAlign) {
                switch ($hAlign) {
                        case PHPExcel_Style_Alignment::HORIZONTAL_GENERAL:                              return false;
                        case PHPExcel_Style_Alignment::HORIZONTAL_LEFT:                                 return 'left';
                        case PHPExcel_Style_Alignment::HORIZONTAL_RIGHT:                                return 'right';
                        case PHPExcel_Style_Alignment::HORIZONTAL_CENTER:
                        case PHPExcel_Style_Alignment::HORIZONTAL_CENTER_CONTINUOUS:    return 'center';
                        case PHPExcel_Style_Alignment::HORIZONTAL_JUSTIFY:                              return 'justify';
                        default: return false;
                }
        }
 
        private function _mapBorderStyle($borderStyle) {
                switch ($borderStyle) {
                        case PHPExcel_Style_Border::BORDER_NONE:                                return 'none';
                        case PHPExcel_Style_Border::BORDER_DASHDOT:                             return '1px dashed';
                        case PHPExcel_Style_Border::BORDER_DASHDOTDOT:                  return '1px dotted';
                        case PHPExcel_Style_Border::BORDER_DASHED:                              return '1px dashed';
                        case PHPExcel_Style_Border::BORDER_DOTTED:                              return '1px dotted';
                        case PHPExcel_Style_Border::BORDER_DOUBLE:                              return '3px double';
                        case PHPExcel_Style_Border::BORDER_HAIR:                                return '1px solid';
                        case PHPExcel_Style_Border::BORDER_MEDIUM:                              return '2px solid';
                        case PHPExcel_Style_Border::BORDER_MEDIUMDASHDOT:               return '2px dashed';
                        case PHPExcel_Style_Border::BORDER_MEDIUMDASHDOTDOT:    return '2px dotted';
                        case PHPExcel_Style_Border::BORDER_MEDIUMDASHED:                return '2px dashed';
                        case PHPExcel_Style_Border::BORDER_SLANTDASHDOT:                return '2px dashed';
                        case PHPExcel_Style_Border::BORDER_THICK:                               return '3px solid';
                        case PHPExcel_Style_Border::BORDER_THIN:                                return '1px solid';
                        default: return '1px solid'; // map others to thin
                }
        }
 
        public function getSheetIndex() {
                return $this->_sheetIndex;
        }
 
        public function setSheetIndex($pValue = 0) {
                $this->_sheetIndex = $pValue;
                return $this;
        }
 
        public function getGenerateSheetNavigationBlock() {
                return $this->_generateSheetNavigationBlock;
        }
 
        public function setGenerateSheetNavigationBlock($pValue = true) {
                $this->_generateSheetNavigationBlock = (bool) $pValue;
                return $this;
        }
 
        public function writeAllSheets() {
                $this->_sheetIndex = null;
                return $this;
        }
 
        public function generateHTMLHeader($pIncludeStyles = false) {
                // PHPExcel object known?
                if (is_null($this->_phpExcel)) {
                        throw new PHPExcel_Writer_Exception('Internal PHPExcel object not set to an instance of an object.');
                }
 
                // Construct HTML
                $properties = $this->_phpExcel->getProperties();
                $html = '<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">' . PHP_EOL;
                $html .= '<!-- Generated by PHPExcel - http://www.phpexcel.net -->' . PHP_EOL;
                $html .= '<html>' . PHP_EOL;
                $html .= '  <head>' . PHP_EOL;
                $html .= '        <meta http-equiv="Content-Type" content="text/html; charset=utf-8">' . PHP_EOL;
                if ($properties->getTitle() > '')
                        $html .= '        <title>' . htmlspecialchars($properties->getTitle()) . '</title>' . PHP_EOL;
 
                if ($properties->getCreator() > '')
                        $html .= '        <meta name="author" content="' . htmlspecialchars($properties->getCreator()) . '" />' . PHP_EOL;
                if ($properties->getTitle() > '')
                        $html .= '        <meta name="title" content="' . htmlspecialchars($properties->getTitle()) . '" />' . PHP_EOL;
                if ($properties->getDescription() > '')
                        $html .= '        <meta name="description" content="' . htmlspecialchars($properties->getDescription()) . '" />' . PHP_EOL;
                if ($properties->getSubject() > '')
                        $html .= '        <meta name="subject" content="' . htmlspecialchars($properties->getSubject()) . '" />' . PHP_EOL;
                if ($properties->getKeywords() > '')
                        $html .= '        <meta name="keywords" content="' . htmlspecialchars($properties->getKeywords()) . '" />' . PHP_EOL;
                if ($properties->getCategory() > '')
                        $html .= '        <meta name="category" content="' . htmlspecialchars($properties->getCategory()) . '" />' . PHP_EOL;
                if ($properties->getCompany() > '')
                        $html .= '        <meta name="company" content="' . htmlspecialchars($properties->getCompany()) . '" />' . PHP_EOL;
                if ($properties->getManager() > '')
                        $html .= '        <meta name="manager" content="' . htmlspecialchars($properties->getManager()) . '" />' . PHP_EOL;
 
                if ($pIncludeStyles) {
                        $html .= $this->generateStyles(true);
                }
 
                $html .= '  </head>' . PHP_EOL;
                $html .= '' . PHP_EOL;
                $html .= '  <body>' . PHP_EOL;
 
                // Return
                return $html;
        }
 
        public function generateSheetData() {
                // PHPExcel object known?
                if (is_null($this->_phpExcel)) {
                        throw new PHPExcel_Writer_Exception('Internal PHPExcel object not set to an instance of an object.');
                }
 
                // Ensure that Spans have been calculated?
                if (!$this->_spansAreCalculated) {
                        $this->_calculateSpans();
                }
 
                // Fetch sheets
                $sheets = array();
                if (is_null($this->_sheetIndex)) {
                        $sheets = $this->_phpExcel->getAllSheets();
                } else {
                        $sheets[] = $this->_phpExcel->getSheet($this->_sheetIndex);
                }
 
                // Construct HTML
                $html = '';
 
                // Loop all sheets
                $sheetId = 0;
                foreach ($sheets as $sheet) {
                        // Write table header
                        $html .= $this->_generateTableHeader($sheet);
 
                        // Get worksheet dimension
                        $dimension = explode(':', $sheet->calculateWorksheetDimension());
                        $dimension[0] = PHPExcel_Cell::coordinateFromString($dimension[0]);
                        $dimension[0][0] = PHPExcel_Cell::columnIndexFromString($dimension[0][0]) - 1;
                        $dimension[1] = PHPExcel_Cell::coordinateFromString($dimension[1]);
                        $dimension[1][0] = PHPExcel_Cell::columnIndexFromString($dimension[1][0]) - 1;
 
                        // row min,max
                        $rowMin = $dimension[0][1];
                        $rowMax = $dimension[1][1];
 
                        // calculate start of <tbody>, <thead>
                        $tbodyStart = $rowMin;
                        $theadStart = $theadEnd   = 0; // default: no <thead>   no </thead>
                        if ($sheet->getPageSetup()->isRowsToRepeatAtTopSet()) {
                                $rowsToRepeatAtTop = $sheet->getPageSetup()->getRowsToRepeatAtTop();
 
                                // we can only support repeating rows that start at top row
                                if ($rowsToRepeatAtTop[0] == 1) {
                                        $theadStart = $rowsToRepeatAtTop[0];
                                        $theadEnd   = $rowsToRepeatAtTop[1];
                                        $tbodyStart = $rowsToRepeatAtTop[1] + 1;
                                }
                        }
 
                        // Loop through cells
                        $row = $rowMin-1;
                        while($row++ < $rowMax) {
                                // <thead> ?
                                if ($row == $theadStart) {
                                        $html .= '              <thead>' . PHP_EOL;
                    $cellType = 'th';
                                }
 
                                // <tbody> ?
                                if ($row == $tbodyStart) {
                                        $html .= '              <tbody>' . PHP_EOL;
                    $cellType = 'td';
                                }
 
                                // Write row if there are HTML table cells in it
                                if ( !isset($this->_isSpannedRow[$sheet->getParent()->getIndex($sheet)][$row]) ) {
                                        // Start a new rowData
                                        $rowData = array();
                                        // Loop through columns
                                        $column = $dimension[0][0] - 1;
                                        while($column++ < $dimension[1][0]) {
                                                // Cell exists?
                                                if ($sheet->cellExistsByColumnAndRow($column, $row)) {
                                                        $rowData[$column] = PHPExcel_Cell::stringFromColumnIndex($column) . $row;
                                                } else {
                                                        $rowData[$column] = '';
                                                }
                                        }
                                        $html .= $this->_generateRow($sheet, $rowData, $row - 1, $cellType);
                                }
 
                                // </thead> ?
                                if ($row == $theadEnd) {
                                        $html .= '              </thead>' . PHP_EOL;
                                }
                        }
                        $html .= $this->_extendRowsForChartsAndImages($sheet, $row);
 
                        // Close table body.
                        $html .= '              </tbody>' . PHP_EOL;
 
                        // Write table footer
                        $html .= $this->_generateTableFooter();
 
                        // Writing PDF?
                        if ($this->_isPdf) {
                                if (is_null($this->_sheetIndex) && $sheetId + 1 < $this->_phpExcel->getSheetCount()) {
                                        $html .= '<div style="page-break-before:always" />';
                                }
                        }
 
                        // Next sheet
                        ++$sheetId;
                }
 
                // Return
                return $html;
        }
 
        public function generateNavigation()
        {
                // PHPExcel object known?
                if (is_null($this->_phpExcel)) {
                        throw new PHPExcel_Writer_Exception('Internal PHPExcel object not set to an instance of an object.');
                }
 
                // Fetch sheets
                $sheets = array();
                if (is_null($this->_sheetIndex)) {
                        $sheets = $this->_phpExcel->getAllSheets();
                } else {
                        $sheets[] = $this->_phpExcel->getSheet($this->_sheetIndex);
                }
 
                // Construct HTML
                $html = '';
 
                // Only if there are more than 1 sheets
                if (count($sheets) > 1) {
                        // Loop all sheets
                        $sheetId = 0;
 
                        $html .= '<ul class="navigation">' . PHP_EOL;
 
                        foreach ($sheets as $sheet) {
                                $html .= '  <li class="sheet' . $sheetId . '"><a href="#sheet' . $sheetId . '">' . $sheet->getTitle() . '</a></li>' . PHP_EOL;
                                ++$sheetId;
                        }
 
                        $html .= '</ul>' . PHP_EOL;
                }
 
                return $html;
        }
 
        private function _extendRowsForChartsAndImages(PHPExcel_Worksheet $pSheet, $row) {
                $rowMax = $row;
                $colMax = 'A';
                if ($this->_includeCharts) {
                        foreach ($pSheet->getChartCollection() as $chart) {
                                if ($chart instanceof PHPExcel_Chart) {
                                    $chartCoordinates = $chart->getTopLeftPosition();
                                    $chartTL = PHPExcel_Cell::coordinateFromString($chartCoordinates['cell']);
                                        $chartCol = PHPExcel_Cell::columnIndexFromString($chartTL[0]);
                                        if ($chartTL[1] > $rowMax) {
                                                $rowMax = $chartTL[1];
                                                if ($chartCol > PHPExcel_Cell::columnIndexFromString($colMax)) {
                                                        $colMax = $chartTL[0];
                                                }
                                        }
                                }
                        }
                }
 
                foreach ($pSheet->getDrawingCollection() as $drawing) {
                        if ($drawing instanceof PHPExcel_Worksheet_Drawing) {
                            $imageTL = PHPExcel_Cell::coordinateFromString($drawing->getCoordinates());
                                $imageCol = PHPExcel_Cell::columnIndexFromString($imageTL[0]);
                                if ($imageTL[1] > $rowMax) {
                                        $rowMax = $imageTL[1];
                                        if ($imageCol > PHPExcel_Cell::columnIndexFromString($colMax)) {
                                                $colMax = $imageTL[0];
                                        }
                                }
                        }
                }
                $html = '';
                $colMax++;
                while ($row < $rowMax) {
                        $html .= '<tr>';
                        for ($col = 'A'; $col != $colMax; ++$col) {
                                $html .= '<td>';
                                $html .= $this->_writeImageInCell($pSheet, $col.$row);
                                if ($this->_includeCharts) {
                                        $html .= $this->_writeChartInCell($pSheet, $col.$row);
                                }
                                $html .= '</td>';
                        }
                        ++$row;
                        $html .= '</tr>';
                }
                return $html;
        }
 
 
        private function _writeImageInCell(PHPExcel_Worksheet $pSheet, $coordinates) {
                // Construct HTML
                $html = '';
 
                // Write images
                foreach ($pSheet->getDrawingCollection() as $drawing) {
                        if ($drawing instanceof PHPExcel_Worksheet_Drawing) {
                                if ($drawing->getCoordinates() == $coordinates) {
                                        $filename = $drawing->getPath();
 
                                        // Strip off eventual '.'
                                        if (substr($filename, 0, 1) == '.') {
                                                $filename = substr($filename, 1);
                                        }
 
                                        // Prepend images root
                                        $filename = $this->getImagesRoot() . $filename;
 
                                        // Strip off eventual '.'
                                        if (substr($filename, 0, 1) == '.' && substr($filename, 0, 2) != './') {
                                                $filename = substr($filename, 1);
                                        }
 
                                        // Convert UTF8 data to PCDATA
                                        $filename = htmlspecialchars($filename);
 
                                        $html .= PHP_EOL;
                                        if ((!$this->_embedImages) || ($this->_isPdf)) {
                                                $imageData = $filename;
                                        } else {
                                                $imageDetails = getimagesize($filename);
                                                if ($fp = fopen($filename,"rb", 0)) {
                                                        $picture = fread($fp,filesize($filename));
                                                        fclose($fp);
                                                        // base64 encode the binary data, then break it
                                                        // into chunks according to RFC 2045 semantics
                                                        $base64 = chunk_split(base64_encode($picture));
                                                        $imageData = 'data:'.$imageDetails['mime'].';base64,' . $base64;
                                                } else {
                                                        $imageData = $filename;
                                                }
                                        }
 
                                        $html .= '<div style="position: relative;">';
                                        $html .= '<img style="position: absolute; z-index: 1; left: ' . 
                        $drawing->getOffsetX() . 'px; top: ' . $drawing->getOffsetY() . 'px; width: ' . 
                        $drawing->getWidth() . 'px; height: ' . $drawing->getHeight() . 'px;" src="' . 
                        $imageData . '" border="0" />';
                                        $html .= '</div>';
                                }
                        }
                }
 
                // Return
                return $html;
        }
 
        private function _writeChartInCell(PHPExcel_Worksheet $pSheet, $coordinates) {
                // Construct HTML
                $html = '';
 
                // Write charts
                foreach ($pSheet->getChartCollection() as $chart) {
                        if ($chart instanceof PHPExcel_Chart) {
                            $chartCoordinates = $chart->getTopLeftPosition();
                                if ($chartCoordinates['cell'] == $coordinates) {
                                        $chartFileName = PHPExcel_Shared_File::sys_get_temp_dir().'/'.uniqid().'.png';
                                        if (!$chart->render($chartFileName)) {
                                                return;
                                        }
 
                                        $html .= PHP_EOL;
                                        $imageDetails = getimagesize($chartFileName);
                                        if ($fp = fopen($chartFileName,"rb", 0)) {
                                                $picture = fread($fp,filesize($chartFileName));
                                                fclose($fp);
                                                // base64 encode the binary data, then break it
                                                // into chunks according to RFC 2045 semantics
                                                $base64 = chunk_split(base64_encode($picture));
                                                $imageData = 'data:'.$imageDetails['mime'].';base64,' . $base64;
 
                                                $html .= '<div style="position: relative;">';
                                                $html .= '<img style="position: absolute; z-index: 1; left: ' . $chartCoordinates['xOffset'] . 'px; top: ' . $chartCoordinates['yOffset'] . 'px; width: ' . $imageDetails[0] . 'px; height: ' . $imageDetails[1] . 'px;" src="' . $imageData . '" border="0" />' . PHP_EOL;
                                                $html .= '</div>';
 
                                                unlink($chartFileName);
                                        }
                                }
                        }
                }
 
                // Return
                return $html;
        }
 
        public function generateStyles($generateSurroundingHTML = true) {
                // PHPExcel object known?
                if (is_null($this->_phpExcel)) {
                        throw new PHPExcel_Writer_Exception('Internal PHPExcel object not set to an instance of an object.');
                }
 
                // Build CSS
                $css = $this->buildCSS($generateSurroundingHTML);
 
                // Construct HTML
                $html = '';
 
                // Start styles
                if ($generateSurroundingHTML) {
                        $html .= '      <style type="text/css">' . PHP_EOL;
                        $html .= '        html { ' . $this->_assembleCSS($css['html']) . ' }' . PHP_EOL;
                }
 
                // Write all other styles
                foreach ($css as $styleName => $styleDefinition) {
                        if ($styleName != 'html') {
                                $html .= '        ' . $styleName . ' { ' . $this->_assembleCSS($styleDefinition) . ' }' . PHP_EOL;
                        }
                }
 
                // End styles
                if ($generateSurroundingHTML) {
                        $html .= '      </style>' . PHP_EOL;
                }
 
                // Return
                return $html;
        }
 
        public function buildCSS($generateSurroundingHTML = true) {
                // PHPExcel object known?
                if (is_null($this->_phpExcel)) {
                        throw new PHPExcel_Writer_Exception('Internal PHPExcel object not set to an instance of an object.');
                }
 
                // Cached?
                if (!is_null($this->_cssStyles)) {
                        return $this->_cssStyles;
                }
 
                // Ensure that spans have been calculated
                if (!$this->_spansAreCalculated) {
                        $this->_calculateSpans();
                }
 
                // Construct CSS
                $css = array();
 
                // Start styles
                if ($generateSurroundingHTML) {
                        // html { }
                        $css['html']['font-family']       = 'Calibri, Arial, Helvetica, sans-serif';
                        $css['html']['font-size']               = '11pt';
                        $css['html']['background-color'] = 'white';
                }
 
 
                // table { }
                $css['table']['border-collapse']  = 'collapse';
            if (!$this->_isPdf) {
                        $css['table']['page-break-after'] = 'always';
                }
 
                // .gridlines td { }
                $css['.gridlines td']['border'] = '1px dotted black';
                $css['.gridlines th']['border'] = '1px dotted black';
 
                // .b {}
                $css['.b']['text-align'] = 'center'; // BOOL
 
                // .e {}
                $css['.e']['text-align'] = 'center'; // ERROR
 
                // .f {}
                $css['.f']['text-align'] = 'right'; // FORMULA
 
                // .inlineStr {}
                $css['.inlineStr']['text-align'] = 'left'; // INLINE
 
                // .n {}
                $css['.n']['text-align'] = 'right'; // NUMERIC
 
                // .s {}
                $css['.s']['text-align'] = 'left'; // STRING
 
                // Calculate cell style hashes
                foreach ($this->_phpExcel->getCellXfCollection() as $index => $style) {
                        $css['td.style' . $index] = $this->_createCSSStyle( $style );
                        $css['th.style' . $index] = $this->_createCSSStyle( $style );
                }
 
                // Fetch sheets
                $sheets = array();
                if (is_null($this->_sheetIndex)) {
                        $sheets = $this->_phpExcel->getAllSheets();
                } else {
                        $sheets[] = $this->_phpExcel->getSheet($this->_sheetIndex);
                }
 
                // Build styles per sheet
                foreach ($sheets as $sheet) {
                        // Calculate hash code
                        $sheetIndex = $sheet->getParent()->getIndex($sheet);
 
                        // Build styles
                        // Calculate column widths
                        $sheet->calculateColumnWidths();
 
                        // col elements, initialize
                        $highestColumnIndex = PHPExcel_Cell::columnIndexFromString($sheet->getHighestColumn()) - 1;
                        $column = -1;
                        while($column++ < $highestColumnIndex) {
                                $this->_columnWidths[$sheetIndex][$column] = 42; // approximation
                                $css['table.sheet' . $sheetIndex . ' col.col' . $column]['width'] = '42pt';
                        }
 
                        // col elements, loop through columnDimensions and set width
                        foreach ($sheet->getColumnDimensions() as $columnDimension) {
                                if (($width = PHPExcel_Shared_Drawing::cellDimensionToPixels($columnDimension->getWidth(), $this->_defaultFont)) >= 0) {
                                        $width = PHPExcel_Shared_Drawing::pixelsToPoints($width);
                                        $column = PHPExcel_Cell::columnIndexFromString($columnDimension->getColumnIndex()) - 1;
                                        $this->_columnWidths[$sheetIndex][$column] = $width;
                                        $css['table.sheet' . $sheetIndex . ' col.col' . $column]['width'] = $width . 'pt';
 
                                        if ($columnDimension->getVisible() === false) {
                                                $css['table.sheet' . $sheetIndex . ' col.col' . $column]['visibility'] = 'collapse';
                                                $css['table.sheet' . $sheetIndex . ' col.col' . $column]['*display'] = 'none'; // target IE6+7
                                        }
                                }
                        }
 
                        // Default row height
                        $rowDimension = $sheet->getDefaultRowDimension();
 
                        // table.sheetN tr { }
                        $css['table.sheet' . $sheetIndex . ' tr'] = array();
 
                        if ($rowDimension->getRowHeight() == -1) {
                                $pt_height = PHPExcel_Shared_Font::getDefaultRowHeightByFont($this->_phpExcel->getDefaultStyle()->getFont());
                        } else {
                                $pt_height = $rowDimension->getRowHeight();
                        }
                        $css['table.sheet' . $sheetIndex . ' tr']['height'] = $pt_height . 'pt';
                        if ($rowDimension->getVisible() === false) {
                                $css['table.sheet' . $sheetIndex . ' tr']['display']    = 'none';
                                $css['table.sheet' . $sheetIndex . ' tr']['visibility'] = 'hidden';
                        }
 
                        // Calculate row heights
                        foreach ($sheet->getRowDimensions() as $rowDimension) {
                                $row = $rowDimension->getRowIndex() - 1;
 
                                // table.sheetN tr.rowYYYYYY { }
                                $css['table.sheet' . $sheetIndex . ' tr.row' . $row] = array();
 
                                if ($rowDimension->getRowHeight() == -1) {
                                        $pt_height = PHPExcel_Shared_Font::getDefaultRowHeightByFont($this->_phpExcel->getDefaultStyle()->getFont());
                                } else {
                                        $pt_height = $rowDimension->getRowHeight();
                                }
                                $css['table.sheet' . $sheetIndex . ' tr.row' . $row]['height'] = $pt_height . 'pt';
                                if ($rowDimension->getVisible() === false) {
                                        $css['table.sheet' . $sheetIndex . ' tr.row' . $row]['display'] = 'none';
                                        $css['table.sheet' . $sheetIndex . ' tr.row' . $row]['visibility'] = 'hidden';
                                }
                        }
                }
 
                // Cache
                if (is_null($this->_cssStyles)) {
                        $this->_cssStyles = $css;
                }
 
                // Return
                return $css;
        }
 
        private function _createCSSStyle(PHPExcel_Style $pStyle) {
                // Construct CSS
                $css = '';
 
                // Create CSS
                $css = array_merge(
                        $this->_createCSSStyleAlignment($pStyle->getAlignment())
                        , $this->_createCSSStyleBorders($pStyle->getBorders())
                        , $this->_createCSSStyleFont($pStyle->getFont())
                        , $this->_createCSSStyleFill($pStyle->getFill())
                );
 
                // Return
                return $css;
        }
 
        private function _createCSSStyleAlignment(PHPExcel_Style_Alignment $pStyle) {
                // Construct CSS
                $css = array();
 
                // Create CSS
                $css['vertical-align'] = $this->_mapVAlign($pStyle->getVertical());
                if ($textAlign = $this->_mapHAlign($pStyle->getHorizontal())) {
                        $css['text-align'] = $textAlign;
                        if(in_array($textAlign,array('left','right')))
                                $css['padding-'.$textAlign] = (string)((int)$pStyle->getIndent() * 9).'px';
                }
 
                // Return
                return $css;
        }
 
        private function _createCSSStyleFont(PHPExcel_Style_Font $pStyle) {
                // Construct CSS
                $css = array();
 
                // Create CSS
                if ($pStyle->getBold()) {
                        $css['font-weight'] = 'bold';
                }
                if ($pStyle->getUnderline() != PHPExcel_Style_Font::UNDERLINE_NONE && $pStyle->getStrikethrough()) {
                        $css['text-decoration'] = 'underline line-through';
                } else if ($pStyle->getUnderline() != PHPExcel_Style_Font::UNDERLINE_NONE) {
                        $css['text-decoration'] = 'underline';
                } else if ($pStyle->getStrikethrough()) {
                        $css['text-decoration'] = 'line-through';
                }
                if ($pStyle->getItalic()) {
                        $css['font-style'] = 'italic';
                }
 
                $css['color']           = '#' . $pStyle->getColor()->getRGB();
                $css['font-family']     = '\'' . $pStyle->getName() . '\'';
                $css['font-size']       = $pStyle->getSize() . 'pt';
 
                // Return
                return $css;
        }
 
        private function _createCSSStyleBorders(PHPExcel_Style_Borders $pStyle) {
                // Construct CSS
                $css = array();
 
                // Create CSS
                $css['border-bottom']   = $this->_createCSSStyleBorder($pStyle->getBottom());
                $css['border-top']              = $this->_createCSSStyleBorder($pStyle->getTop());
                $css['border-left']             = $this->_createCSSStyleBorder($pStyle->getLeft());
                $css['border-right']    = $this->_createCSSStyleBorder($pStyle->getRight());
 
                // Return
                return $css;
        }
 
        private function _createCSSStyleBorder(PHPExcel_Style_Border $pStyle) {
                // Create CSS
//              $css = $this->_mapBorderStyle($pStyle->getBorderStyle()) . ' #' . $pStyle->getColor()->getRGB();
                //      Create CSS - add !important to non-none border styles for merged cells  
                $borderStyle = $this->_mapBorderStyle($pStyle->getBorderStyle());  
                $css = $borderStyle . ' #' . $pStyle->getColor()->getRGB() . (($borderStyle == 'none') ? '' : ' !important'); 
 
                // Return
                return $css;
        }
 
        private function _createCSSStyleFill(PHPExcel_Style_Fill $pStyle) {
                // Construct HTML
                $css = array();
 
                // Create CSS
                $value = $pStyle->getFillType() == PHPExcel_Style_Fill::FILL_NONE ?
                        'white' : '#' . $pStyle->getStartColor()->getRGB();
                $css['background-color'] = $value;
 
                // Return
                return $css;
        }
 
        public function generateHTMLFooter() {
                // Construct HTML
                $html = '';
                $html .= '  </body>' . PHP_EOL;
                $html .= '</html>' . PHP_EOL;
 
                // Return
                return $html;
        }
 
        private function _generateTableHeader($pSheet) {
                $sheetIndex = $pSheet->getParent()->getIndex($pSheet);
 
                // Construct HTML
                $html = '';
                $html .= $this->_setMargins($pSheet);
                        
                if (!$this->_useInlineCss) {
                        $gridlines = $pSheet->getShowGridlines() ? ' gridlines' : '';
                        $html .= '      <table border="0" cellpadding="0" cellspacing="0" id="sheet' . $sheetIndex . '" class="sheet' . $sheetIndex . $gridlines . '">' . PHP_EOL;
                } else {
                        $style = isset($this->_cssStyles['table']) ?
                                $this->_assembleCSS($this->_cssStyles['table']) : '';
 
                        if ($this->_isPdf && $pSheet->getShowGridlines()) {
                                $html .= '      <table border="1" cellpadding="1" id="sheet' . $sheetIndex . '" cellspacing="1" style="' . $style . '">' . PHP_EOL;
                        } else {
                                $html .= '      <table border="0" cellpadding="1" id="sheet' . $sheetIndex . '" cellspacing="0" style="' . $style . '">' . PHP_EOL;
                        }
                }
 
                // Write <col> elements
                $highestColumnIndex = PHPExcel_Cell::columnIndexFromString($pSheet->getHighestColumn()) - 1;
                $i = -1;
                while($i++ < $highestColumnIndex) {
                    if (!$this->_isPdf) {
                                if (!$this->_useInlineCss) {
                                        $html .= '              <col class="col' . $i . '">' . PHP_EOL;
                                } else {
                                        $style = isset($this->_cssStyles['table.sheet' . $sheetIndex . ' col.col' . $i]) ?
                                                $this->_assembleCSS($this->_cssStyles['table.sheet' . $sheetIndex . ' col.col' . $i]) : '';
                                        $html .= '              <col style="' . $style . '">' . PHP_EOL;
                                }
                        }
                }
 
                // Return
                return $html;
        }
 
        private function _generateTableFooter() {
                // Construct HTML
                $html = '';
                $html .= '      </table>' . PHP_EOL;
 
                // Return
                return $html;
        }
 
        private function _generateRow(PHPExcel_Worksheet $pSheet, $pValues = null, $pRow = 0, $cellType = 'td') {
                if (is_array($pValues)) {
                        // Construct HTML
                        $html = '';
 
                        // Sheet index
                        $sheetIndex = $pSheet->getParent()->getIndex($pSheet);
 
                        // DomPDF and breaks
                        if ($this->_isPdf && count($pSheet->getBreaks()) > 0) {
                                $breaks = $pSheet->getBreaks();
 
                                // check if a break is needed before this row
                                if (isset($breaks['A' . $pRow])) {
                                        // close table: </table>
                                        $html .= $this->_generateTableFooter();
 
                                        // insert page break
                                        $html .= '<div style="page-break-before:always" />';
 
                                        // open table again: <table> + <col> etc.
                                        $html .= $this->_generateTableHeader($pSheet);
                                }
                        }
 
                        // Write row start
                        if (!$this->_useInlineCss) {
                                $html .= '                <tr class="row' . $pRow . '">' . PHP_EOL;
                        } else {
                                $style = isset($this->_cssStyles['table.sheet' . $sheetIndex . ' tr.row' . $pRow])
                                        ? $this->_assembleCSS($this->_cssStyles['table.sheet' . $sheetIndex . ' tr.row' . $pRow]) : '';
 
                                $html .= '                <tr style="' . $style . '">' . PHP_EOL;
                        }
 
                        // Write cells
                        $colNum = 0;
                        foreach ($pValues as $cellAddress) {
                $cell = ($cellAddress > '') ? $pSheet->getCell($cellAddress) : '';
                                $coordinate = PHPExcel_Cell::stringFromColumnIndex($colNum) . ($pRow + 1);
                                if (!$this->_useInlineCss) {
                                        $cssClass = '';
                                        $cssClass = 'column' . $colNum;
                                } else {
                                        $cssClass = array();
                    if ($cellType == 'th') {
                        if (isset($this->_cssStyles['table.sheet' . $sheetIndex . ' th.column' . $colNum])) {
                            $this->_cssStyles['table.sheet' . $sheetIndex . ' th.column' . $colNum];
                        }
                    } else {
                        if (isset($this->_cssStyles['table.sheet' . $sheetIndex . ' td.column' . $colNum])) {
                            $this->_cssStyles['table.sheet' . $sheetIndex . ' td.column' . $colNum];
                        }
                    }
                                }
                                $colSpan = 1;
                                $rowSpan = 1;
 
                                // initialize
                                $cellData = '&nbsp;';
 
                                // PHPExcel_Cell
                                if ($cell instanceof PHPExcel_Cell) {
                                        $cellData = '';
                                        if (is_null($cell->getParent())) {
                                                $cell->attach($pSheet);
                                        }
                                        // Value
                                        if ($cell->getValue() instanceof PHPExcel_RichText) {
                                                // Loop through rich text elements
                                                $elements = $cell->getValue()->getRichTextElements();
                                                foreach ($elements as $element) {
                                                        // Rich text start?
                                                        if ($element instanceof PHPExcel_RichText_Run) {
                                                                $cellData .= '<span style="' . $this->_assembleCSS($this->_createCSSStyleFont($element->getFont())) . '">';
 
                                                                if ($element->getFont()->getSuperScript()) {
                                                                        $cellData .= '<sup>';
                                                                } else if ($element->getFont()->getSubScript()) {
                                                                        $cellData .= '<sub>';
                                                                }
                                                        }
 
                                                        // Convert UTF8 data to PCDATA
                                                        $cellText = $element->getText();
                                                        $cellData .= htmlspecialchars($cellText);
 
                                                        if ($element instanceof PHPExcel_RichText_Run) {
                                                                if ($element->getFont()->getSuperScript()) {
                                                                        $cellData .= '</sup>';
                                                                } else if ($element->getFont()->getSubScript()) {
                                                                        $cellData .= '</sub>';
                                                                }
 
                                                                $cellData .= '</span>';
                                                        }
                                                }
                                        } else {
                                                if ($this->_preCalculateFormulas) {
                                                        $cellData = PHPExcel_Style_NumberFormat::toFormattedString(
                                                                $cell->getCalculatedValue(),
                                                                $pSheet->getParent()->getCellXfByIndex( $cell->getXfIndex() )->getNumberFormat()->getFormatCode(),
                                                                array($this, 'formatColor')
                                                        );
                                                } else {
                                                        $cellData = PHPExcel_Style_NumberFormat::toFormattedString(
                                                                $cell->getValue(),
                                                                $pSheet->getParent()->getCellXfByIndex( $cell->getXfIndex() )->getNumberFormat()->getFormatCode(),
                                                                array($this, 'formatColor')
                                                        );
                                                }
                                                $cellData = htmlspecialchars($cellData);
                                                if ($pSheet->getParent()->getCellXfByIndex( $cell->getXfIndex() )->getFont()->getSuperScript()) {
                                                        $cellData = '<sup>'.$cellData.'</sup>';
                                                } elseif ($pSheet->getParent()->getCellXfByIndex( $cell->getXfIndex() )->getFont()->getSubScript()) {
                                                        $cellData = '<sub>'.$cellData.'</sub>';
                                                }
                                        }
 
                                        // Converts the cell content so that spaces occuring at beginning of each new line are replaced by &nbsp;
                                        // Example: "  Hello\n to the world" is converted to "&nbsp;&nbsp;Hello\n&nbsp;to the world"
                                        $cellData = preg_replace("/(?m)(?:^|\\G) /", '&nbsp;', $cellData);
 
                                        // convert newline "\n" to '<br>'
                                        $cellData = nl2br($cellData);
 
                                        // Extend CSS class?
                                        if (!$this->_useInlineCss) {
                                                $cssClass .= ' style' . $cell->getXfIndex();
                                                $cssClass .= ' ' . $cell->getDataType();
                                        } else {
                        if ($cellType == 'th') {
                            if (isset($this->_cssStyles['th.style' . $cell->getXfIndex()])) {
                                $cssClass = array_merge($cssClass, $this->_cssStyles['th.style' . $cell->getXfIndex()]);
                            }
                        } else {
                            if (isset($this->_cssStyles['td.style' . $cell->getXfIndex()])) {
                                $cssClass = array_merge($cssClass, $this->_cssStyles['td.style' . $cell->getXfIndex()]);
                            }
                        }
 
                                                // General horizontal alignment: Actual horizontal alignment depends on dataType
                                                $sharedStyle = $pSheet->getParent()->getCellXfByIndex( $cell->getXfIndex() );
                                                if ($sharedStyle->getAlignment()->getHorizontal() == PHPExcel_Style_Alignment::HORIZONTAL_GENERAL
                                                        && isset($this->_cssStyles['.' . $cell->getDataType()]['text-align']))
                                                {
                                                        $cssClass['text-align'] = $this->_cssStyles['.' . $cell->getDataType()]['text-align'];
                                                }
                                        }
                                }
 
                                // Hyperlink?
                                if ($pSheet->hyperlinkExists($coordinate) && !$pSheet->getHyperlink($coordinate)->isInternal()) {
                                        $cellData = '<a href="' . htmlspecialchars($pSheet->getHyperlink($coordinate)->getUrl()) . '" title="' . htmlspecialchars($pSheet->getHyperlink($coordinate)->getTooltip()) . '">' . $cellData . '</a>';
                                }
 
                                // Should the cell be written or is it swallowed by a rowspan or colspan?
                                $writeCell = ! ( isset($this->_isSpannedCell[$pSheet->getParent()->getIndex($pSheet)][$pRow + 1][$colNum])
                                                        && $this->_isSpannedCell[$pSheet->getParent()->getIndex($pSheet)][$pRow + 1][$colNum] );
 
                                // Colspan and Rowspan
                                $colspan = 1;
                                $rowspan = 1;
                                if (isset($this->_isBaseCell[$pSheet->getParent()->getIndex($pSheet)][$pRow + 1][$colNum])) {
                                        $spans = $this->_isBaseCell[$pSheet->getParent()->getIndex($pSheet)][$pRow + 1][$colNum];
                                        $rowSpan = $spans['rowspan'];
                                        $colSpan = $spans['colspan'];
 
                                        //      Also apply style from last cell in merge to fix borders -
                                        //              relies on !important for non-none border declarations in _createCSSStyleBorder
                                        $endCellCoord = PHPExcel_Cell::stringFromColumnIndex($colNum + $colSpan - 1) . ($pRow + $rowSpan);
                                        if (!$this->_useInlineCss) {
                                                $cssClass .= ' style' . $pSheet->getCell($endCellCoord)->getXfIndex();
                                        }
                                }
 
                                // Write
                                if ($writeCell) {
                                        // Column start
                                        $html .= '                      <' . $cellType;
                                                if (!$this->_useInlineCss) {
                                                        $html .= ' class="' . $cssClass . '"';
                                                } else {
                                                        //** Necessary redundant code for the sake of PHPExcel_Writer_PDF **
                                                        // We must explicitly write the width of the <td> element because TCPDF
                                                        // does not recognize e.g. <col style="width:42pt">
                                                        $width = 0;
                                                        $i = $colNum - 1;
                                                        $e = $colNum + $colSpan - 1;
                                                        while($i++ < $e) {
                                                                if (isset($this->_columnWidths[$sheetIndex][$i])) {
                                                                        $width += $this->_columnWidths[$sheetIndex][$i];
                                                                }
                                                        }
                                                        $cssClass['width'] = $width . 'pt';
 
                                                        // We must also explicitly write the height of the <td> element because TCPDF
                                                        // does not recognize e.g. <tr style="height:50pt">
                                                        if (isset($this->_cssStyles['table.sheet' . $sheetIndex . ' tr.row' . $pRow]['height'])) {
                                                                $height = $this->_cssStyles['table.sheet' . $sheetIndex . ' tr.row' . $pRow]['height'];
                                                                $cssClass['height'] = $height;
                                                        }
                                                        //** end of redundant code **
 
                                                        $html .= ' style="' . $this->_assembleCSS($cssClass) . '"';
                                                }
                                                if ($colSpan > 1) {
                                                        $html .= ' colspan="' . $colSpan . '"';
                                                }
                                                if ($rowSpan > 1) {
                                                        $html .= ' rowspan="' . $rowSpan . '"';
                                                }
                                        $html .= '>';
 
                                        // Image?
                                        $html .= $this->_writeImageInCell($pSheet, $coordinate);
 
                                        // Chart?
                                        if ($this->_includeCharts) {
                                                $html .= $this->_writeChartInCell($pSheet, $coordinate);
                                        }
 
                                        // Cell data
                                        $html .= $cellData;
 
                                        // Column end
                                        $html .= '</'.$cellType.'>' . PHP_EOL;
                                }
 
                                // Next column
                                ++$colNum;
                        }
 
                        // Write row end
                        $html .= '                </tr>' . PHP_EOL;
 
                        // Return
                        return $html;
                } else {
                        throw new PHPExcel_Writer_Exception("Invalid parameters passed.");
                }
        }
 
        private function _assembleCSS($pValue = array())
        {
                $pairs = array();
                foreach ($pValue as $property => $value) {
                        $pairs[] = $property . ':' . $value;
                }
                $string = implode('; ', $pairs);
 
                return $string;
        }
 
        public function getImagesRoot() {
                return $this->_imagesRoot;
        }
 
        public function setImagesRoot($pValue = '.') {
                $this->_imagesRoot = $pValue;
                return $this;
        }
 
        public function getEmbedImages() {
                return $this->_embedImages;
        }
 
        public function setEmbedImages($pValue = '.') {
                $this->_embedImages = $pValue;
                return $this;
        }
 
        public function getUseInlineCss() {
                return $this->_useInlineCss;
        }
 
        public function setUseInlineCss($pValue = false) {
                $this->_useInlineCss = $pValue;
                return $this;
        }
 
        public function formatColor($pValue, $pFormat)
        {
                // Color information, e.g. [Red] is always at the beginning
                $color = null; // initialize
                $matches = array();
 
                $color_regex = '/^\\[[a-zA-Z]+\\]/';
                if (preg_match($color_regex, $pFormat, $matches)) {
                        $color = str_replace('[', '', $matches[0]);
                        $color = str_replace(']', '', $color);
                        $color = strtolower($color);
                }
 
                // convert to PCDATA
                $value = htmlspecialchars($pValue);
 
                // color span tag
                if ($color !== null) {
                        $value = '<span style="color:' . $color . '">' . $value . '</span>';
                }
 
                return $value;
        }
 
        private function _calculateSpans()
        {
                // Identify all cells that should be omitted in HTML due to cell merge.
                // In HTML only the upper-left cell should be written and it should have
                //   appropriate rowspan / colspan attribute
                $sheetIndexes = $this->_sheetIndex !== null ?
                        array($this->_sheetIndex) : range(0, $this->_phpExcel->getSheetCount() - 1);
 
                foreach ($sheetIndexes as $sheetIndex) {
                        $sheet = $this->_phpExcel->getSheet($sheetIndex);
 
                        $candidateSpannedRow  = array();
 
                        // loop through all Excel merged cells
                        foreach ($sheet->getMergeCells() as $cells) {
                                list($cells, ) = PHPExcel_Cell::splitRange($cells);
                                $first = $cells[0];
                                $last  = $cells[1];
 
                                list($fc, $fr) = PHPExcel_Cell::coordinateFromString($first);
                                $fc = PHPExcel_Cell::columnIndexFromString($fc) - 1;
 
                                list($lc, $lr) = PHPExcel_Cell::coordinateFromString($last);
                                $lc = PHPExcel_Cell::columnIndexFromString($lc) - 1;
 
                                // loop through the individual cells in the individual merge
                                $r = $fr - 1;
                                while($r++ < $lr) {
                                        // also, flag this row as a HTML row that is candidate to be omitted
                                        $candidateSpannedRow[$r] = $r;
 
                                        $c = $fc - 1;
                                        while($c++ < $lc) {
                                                if ( !($c == $fc && $r == $fr) ) {
                                                        // not the upper-left cell (should not be written in HTML)
                                                        $this->_isSpannedCell[$sheetIndex][$r][$c] = array(
                                                                'baseCell' => array($fr, $fc),
                                                        );
                                                } else {
                                                        // upper-left is the base cell that should hold the colspan/rowspan attribute
                                                        $this->_isBaseCell[$sheetIndex][$r][$c] = array(
                                                                'xlrowspan' => $lr - $fr + 1, // Excel rowspan
                                                                'rowspan'   => $lr - $fr + 1, // HTML rowspan, value may change
                                                                'xlcolspan' => $lc - $fc + 1, // Excel colspan
                                                                'colspan'   => $lc - $fc + 1, // HTML colspan, value may change
                                                        );
                                                }
                                        }
                                }
                        }
 
                        // Identify which rows should be omitted in HTML. These are the rows where all the cells
                        //   participate in a merge and the where base cells are somewhere above.
                        $countColumns = PHPExcel_Cell::columnIndexFromString($sheet->getHighestColumn());
                        foreach ($candidateSpannedRow as $rowIndex) {
                                if (isset($this->_isSpannedCell[$sheetIndex][$rowIndex])) {
                                        if (count($this->_isSpannedCell[$sheetIndex][$rowIndex]) == $countColumns) {
                                                $this->_isSpannedRow[$sheetIndex][$rowIndex] = $rowIndex;
                                        };
                                }
                        }
 
                        // For each of the omitted rows we found above, the affected rowspans should be subtracted by 1
                        if ( isset($this->_isSpannedRow[$sheetIndex]) ) {
                                foreach ($this->_isSpannedRow[$sheetIndex] as $rowIndex) {
                                        $adjustedBaseCells = array();
                                        $c = -1;
                                        $e = $countColumns - 1;
                                        while($c++ < $e) {
                                                $baseCell = $this->_isSpannedCell[$sheetIndex][$rowIndex][$c]['baseCell'];
 
                                                if ( !in_array($baseCell, $adjustedBaseCells) ) {
                                                        // subtract rowspan by 1
                                                        --$this->_isBaseCell[$sheetIndex][ $baseCell[0] ][ $baseCell[1] ]['rowspan'];
                                                        $adjustedBaseCells[] = $baseCell;
                                                }
                                        }
                                }
                        }
 
                        // TODO: Same for columns
                }
 
                // We have calculated the spans
                $this->_spansAreCalculated = true;
        }
 
        private function _setMargins(PHPExcel_Worksheet $pSheet) {
                $htmlPage = '@page { ';
                $htmlBody = 'body { ';
 
                $left = PHPExcel_Shared_String::FormatNumber($pSheet->getPageMargins()->getLeft()) . 'in; ';
                $htmlPage .= 'left-margin: ' . $left;
                $htmlBody .= 'left-margin: ' . $left;
                $right = PHPExcel_Shared_String::FormatNumber($pSheet->getPageMargins()->getRight()) . 'in; ';
                $htmlPage .= 'right-margin: ' . $right;
                $htmlBody .= 'right-margin: ' . $right;
                $top = PHPExcel_Shared_String::FormatNumber($pSheet->getPageMargins()->getTop()) . 'in; ';
                $htmlPage .= 'top-margin: ' . $top;
                $htmlBody .= 'top-margin: ' . $top;
                $bottom = PHPExcel_Shared_String::FormatNumber($pSheet->getPageMargins()->getBottom()) . 'in; ';
                $htmlPage .= 'bottom-margin: ' . $bottom;
                $htmlBody .= 'bottom-margin: ' . $bottom;
 
                $htmlPage .= "}\n";
                $htmlBody .= "}\n";
 
                return "<style>\n" . $htmlPage . $htmlBody . "</style>\n";
        }
        
}