345 lines
10 KiB
PHP
345 lines
10 KiB
PHP
<?php
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namespace Box\Spout\Writer\XLSX\Helper;
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use Box\Spout\Writer\Common\Helper\AbstractStyleHelper;
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use Box\Spout\Writer\Style\Color;
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use Box\Spout\Writer\Style\Style;
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/**
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* Class StyleHelper
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* This class provides helper functions to manage styles
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*
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* @package Box\Spout\Writer\XLSX\Helper
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*/
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class StyleHelper extends AbstractStyleHelper
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{
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/**
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* @var array
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*/
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protected $registeredFills = [];
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/**
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* @var array [STYLE_ID] => [FILL_ID] maps a style to a fill declaration
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*/
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protected $styleIdToFillMappingTable = [];
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/**
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* Excel preserves two default fills with index 0 and 1
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* Since Excel is the dominant vendor - we play along here
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*
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* @var int The fill index counter for custom fills.
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*/
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protected $fillIndex = 2;
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/**
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* @var array
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*/
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protected $registeredBorders = [];
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/**
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* @var array [STYLE_ID] => [BORDER_ID] maps a style to a border declaration
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*/
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protected $styleIdToBorderMappingTable = [];
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/**
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* XLSX specific operations on the registered styles
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*
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* @param \Box\Spout\Writer\Style\Style $style
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* @return \Box\Spout\Writer\Style\Style
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*/
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public function registerStyle($style)
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{
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$registeredStyle = parent::registerStyle($style);
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$this->registerFill($registeredStyle);
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$this->registerBorder($registeredStyle);
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return $registeredStyle;
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}
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/**
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* Register a fill definition
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*
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* @param \Box\Spout\Writer\Style\Style $style
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*/
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protected function registerFill($style)
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{
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$styleId = $style->getId();
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// Currently - only solid backgrounds are supported
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// so $backgroundColor is a scalar value (RGB Color)
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$backgroundColor = $style->getBackgroundColor();
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if ($backgroundColor) {
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$isBackgroundColorRegistered = isset($this->registeredFills[$backgroundColor]);
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// We need to track the already registered background definitions
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if ($isBackgroundColorRegistered) {
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$registeredStyleId = $this->registeredFills[$backgroundColor];
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$registeredFillId = $this->styleIdToFillMappingTable[$registeredStyleId];
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$this->styleIdToFillMappingTable[$styleId] = $registeredFillId;
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} else {
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$this->registeredFills[$backgroundColor] = $styleId;
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$this->styleIdToFillMappingTable[$styleId] = $this->fillIndex++;
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}
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} else {
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// The fillId maps a style to a fill declaration
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// When there is no background color definition - we default to 0
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$this->styleIdToFillMappingTable[$styleId] = 0;
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}
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}
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/**
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* Register a border definition
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*
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* @param \Box\Spout\Writer\Style\Style $style
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*/
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protected function registerBorder($style)
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{
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$styleId = $style->getId();
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if ($style->shouldApplyBorder()) {
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$border = $style->getBorder();
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$serializedBorder = serialize($border);
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$isBorderAlreadyRegistered = isset($this->registeredBorders[$serializedBorder]);
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if ($isBorderAlreadyRegistered) {
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$registeredStyleId = $this->registeredBorders[$serializedBorder];
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$registeredBorderId = $this->styleIdToBorderMappingTable[$registeredStyleId];
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$this->styleIdToBorderMappingTable[$styleId] = $registeredBorderId;
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} else {
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$this->registeredBorders[$serializedBorder] = $styleId;
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$this->styleIdToBorderMappingTable[$styleId] = count($this->registeredBorders);
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}
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} else {
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// If no border should be applied - the mapping is the default border: 0
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$this->styleIdToBorderMappingTable[$styleId] = 0;
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}
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}
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/**
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* For empty cells, we can specify a style or not. If no style are specified,
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* then the software default will be applied. But sometimes, it may be useful
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* to override this default style, for instance if the cell should have a
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* background color different than the default one or some borders
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* (fonts property don't really matter here).
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*
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* @param int $styleId
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* @return bool Whether the cell should define a custom style
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*/
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public function shouldApplyStyleOnEmptyCell($styleId)
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{
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$hasStyleCustomFill = (isset($this->styleIdToFillMappingTable[$styleId]) && $this->styleIdToFillMappingTable[$styleId] !== 0);
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$hasStyleCustomBorders = (isset($this->styleIdToBorderMappingTable[$styleId]) && $this->styleIdToBorderMappingTable[$styleId] !== 0);
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return ($hasStyleCustomFill || $hasStyleCustomBorders);
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}
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/**
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* Returns the content of the "styles.xml" file, given a list of styles.
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*
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* @return string
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*/
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public function getStylesXMLFileContent()
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{
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$content = <<<EOD
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<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
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<styleSheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">
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EOD;
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$content .= $this->getFontsSectionContent();
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$content .= $this->getFillsSectionContent();
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$content .= $this->getBordersSectionContent();
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$content .= $this->getCellStyleXfsSectionContent();
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$content .= $this->getCellXfsSectionContent();
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$content .= $this->getCellStylesSectionContent();
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$content .= <<<EOD
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</styleSheet>
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EOD;
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return $content;
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}
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/**
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* Returns the content of the "<fonts>" section.
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*
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* @return string
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*/
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protected function getFontsSectionContent()
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{
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$content = '<fonts count="' . count($this->styleIdToStyleMappingTable) . '">';
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/** @var \Box\Spout\Writer\Style\Style $style */
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foreach ($this->getRegisteredStyles() as $style) {
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$content .= '<font>';
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$content .= '<sz val="' . $style->getFontSize() . '"/>';
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$content .= '<color rgb="' . Color::toARGB($style->getFontColor()) . '"/>';
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$content .= '<name val="' . $style->getFontName() . '"/>';
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if ($style->isFontBold()) {
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$content .= '<b/>';
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}
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if ($style->isFontItalic()) {
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$content .= '<i/>';
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}
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if ($style->isFontUnderline()) {
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$content .= '<u/>';
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}
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if ($style->isFontStrikethrough()) {
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$content .= '<strike/>';
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}
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$content .= '</font>';
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}
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$content .= '</fonts>';
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return $content;
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}
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/**
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* Returns the content of the "<fills>" section.
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*
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* @return string
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*/
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protected function getFillsSectionContent()
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{
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// Excel reserves two default fills
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$fillsCount = count($this->registeredFills) + 2;
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$content = sprintf('<fills count="%d">', $fillsCount);
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$content .= '<fill><patternFill patternType="none"/></fill>';
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$content .= '<fill><patternFill patternType="gray125"/></fill>';
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// The other fills are actually registered by setting a background color
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foreach ($this->registeredFills as $styleId) {
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/** @var Style $style */
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$style = $this->styleIdToStyleMappingTable[$styleId];
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$backgroundColor = $style->getBackgroundColor();
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$content .= sprintf(
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'<fill><patternFill patternType="solid"><fgColor rgb="%s"/></patternFill></fill>',
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$backgroundColor
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);
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}
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$content .= '</fills>';
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return $content;
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}
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/**
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* Returns the content of the "<borders>" section.
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*
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* @return string
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*/
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protected function getBordersSectionContent()
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{
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// There is one default border with index 0
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$borderCount = count($this->registeredBorders) + 1;
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$content = '<borders count="' . $borderCount . '">';
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// Default border starting at index 0
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$content .= '<border><left/><right/><top/><bottom/></border>';
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foreach ($this->registeredBorders as $styleId) {
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/** @var \Box\Spout\Writer\Style\Style $style */
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$style = $this->styleIdToStyleMappingTable[$styleId];
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$border = $style->getBorder();
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$content .= '<border>';
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// @link https://github.com/box/spout/issues/271
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$sortOrder = ['left', 'right', 'top', 'bottom'];
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foreach ($sortOrder as $partName) {
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if ($border->hasPart($partName)) {
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/** @var $part \Box\Spout\Writer\Style\BorderPart */
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$part = $border->getPart($partName);
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$content .= BorderHelper::serializeBorderPart($part);
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}
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}
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$content .= '</border>';
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}
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$content .= '</borders>';
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return $content;
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}
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/**
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* Returns the content of the "<cellStyleXfs>" section.
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*
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* @return string
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*/
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protected function getCellStyleXfsSectionContent()
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{
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return <<<EOD
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<cellStyleXfs count="1">
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<xf borderId="0" fillId="0" fontId="0" numFmtId="0"/>
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</cellStyleXfs>
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EOD;
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}
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/**
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* Returns the content of the "<cellXfs>" section.
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*
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* @return string
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*/
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protected function getCellXfsSectionContent()
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{
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$registeredStyles = $this->getRegisteredStyles();
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$content = '<cellXfs count="' . count($registeredStyles) . '">';
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foreach ($registeredStyles as $style) {
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$styleId = $style->getId();
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$fillId = $this->styleIdToFillMappingTable[$styleId];
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$borderId = $this->styleIdToBorderMappingTable[$styleId];
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$content .= '<xf numFmtId="0" fontId="' . $styleId . '" fillId="' . $fillId . '" borderId="' . $borderId . '" xfId="0"';
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if ($style->shouldApplyFont()) {
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$content .= ' applyFont="1"';
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}
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$content .= sprintf(' applyBorder="%d"', $style->shouldApplyBorder() ? 1 : 0);
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if ($style->shouldWrapText()) {
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$content .= ' applyAlignment="1">';
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$content .= '<alignment wrapText="1"/>';
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$content .= '</xf>';
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} else {
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$content .= '/>';
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}
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}
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$content .= '</cellXfs>';
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return $content;
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}
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/**
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* Returns the content of the "<cellStyles>" section.
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*
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* @return string
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*/
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protected function getCellStylesSectionContent()
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{
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return <<<EOD
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<cellStyles count="1">
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<cellStyle builtinId="0" name="Normal" xfId="0"/>
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</cellStyles>
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EOD;
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}
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}
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