<?php namespace PhpOffice\PhpSpreadsheet\Writer; use PhpOffice\PhpSpreadsheet\Spreadsheet; interface IWriter { public const SAVE_WITH_CHARTS = 1; /** * IWriter constructor. * * @param Spreadsheet $spreadsheet The spreadsheet that we want to save using this Writer */ public function __construct(Spreadsheet $spreadsheet); /** * Write charts in workbook? * If this is true, then the Writer will write definitions for any charts that exist in the PhpSpreadsheet object. * If false (the default) it will ignore any charts defined in the PhpSpreadsheet object. * * @return bool */ public function getIncludeCharts(); /** * Set write charts in workbook * Set to true, to advise the Writer to include any charts that exist in the PhpSpreadsheet object. * Set to false (the default) to ignore charts. * * @param bool $includeCharts * * @return IWriter */ public function setIncludeCharts($includeCharts); /** * Get Pre-Calculate Formulas flag * If this is true (the default), then the writer will recalculate all formulae in a workbook when saving, * so that the pre-calculated values are immediately available to MS Excel or other office spreadsheet * viewer when opening the file * If false, then formulae are not calculated on save. This is faster for saving in PhpSpreadsheet, but slower * when opening the resulting file in MS Excel, because Excel has to recalculate the formulae itself. * * @return bool */ public function getPreCalculateFormulas(); /** * Set Pre-Calculate Formulas * Set to true (the default) to advise the Writer to calculate all formulae on save * Set to false to prevent precalculation of formulae on save. * * @param bool $precalculateFormulas Pre-Calculate Formulas? * * @return IWriter */ public function setPreCalculateFormulas($precalculateFormulas); /** * Save PhpSpreadsheet to file. * * @param resource|string $filename Name of the file to save */ public function save($filename, int $flags = 0): void; /** * Get use disk caching where possible? * * @return bool */ public function getUseDiskCaching(); /** * Set use disk caching where possible? * * @param bool $useDiskCache * @param string $cacheDirectory Disk caching directory * * @return IWriter */ public function setUseDiskCaching($useDiskCache, $cacheDirectory = null); /** * Get disk caching directory. * * @return string */ public function getDiskCachingDirectory(); }