added fillColor for charts (only xlsx)

src/PhpSpreadsheet/Chart/DataSeriesValues.php

@@ -80,20 +80,32 @@ class DataSeriesValues
  * Create a new DataSeriesValues object.
  *
  * @param mixed $dataType
+ * Fill color.
+ *
+ * @var string
+ */
+ private $fillColor;
+
+ /**
+ * Create a new DataSeriesValues object.
+ *
  * @param string $dataSource
  * @param null|mixed $formatCode
  * @param mixed $pointCount
  * @param mixed $dataValues
  * @param null|mixed $marker
+ * @param mixed $dataType
+ * @param null|mixed $color
  */
- public function __construct($dataType = self::DATASERIES_TYPE_NUMBER, $dataSource = null, $formatCode = null, $pointCount = 0, $dataValues = [], $marker = null)
+ public function __construct($dataType = self::DATASERIES_TYPE_NUMBER, $dataSource = null, $formatCode = null, $pointCount = 0, $dataValues = [], $marker = null, $color = null)
  {
  $this->setDataType($dataType);
  $this->dataSource = $dataSource;
  $this->formatCode = $formatCode;
  $this->pointCount = $pointCount;
  $this->dataValues = $dataValues;
  $this->pointMarker = $marker;
+ $this->fillColor = $color;
  }
 
  /**
@@ -212,6 +224,35 @@ public function getPointCount()
  return $this->pointCount;
  }
 
+ /**
+ * Identify if the Data Series is a multi-level or a simple series.
+ * Get fill color.
+ *
+ * @return string
+ */
+ public function getFillColor()
+ {
+ return $this->fillColor;
+ }
+
+ /**
+ * Set fill color for series.
+ *
+ * @param string HEX color
+ * @param mixed $color
+ *
+ * @return DataSeriesValues
+ */
+ public function setFillColor($color)
+ {
+ if (!preg_match('/^[a-f0-9]{6}$/i', $color)) {
+ throw new Exception('Invalid hex color for chart series');
+ }
+ $this->fillColor = $color;
+
+ return $this;
+ }
+
  /**
  * Identify if the Data Series is a multi-level or a simple series.
  *

src/PhpSpreadsheet/Writer/Xlsx/Chart.php

@@ -1095,6 +1095,19 @@ private function writePlotGroup($plotGroup, $groupType, $objWriter, &$catIsMulti
  foreach ($plotSeriesOrder as $plotSeriesIdx => $plotSeriesRef) {
  $objWriter->startElement('c:ser');
 
+ $plotLabel = $plotGroup->getPlotLabelByIndex($plotSeriesIdx);
+ if ($plotLabel){
+ $fillColor = $plotLabel->getFillColor();
+ if ($fillColor != null) {
+ $objWriter->startElement('c:spPr');
+ $objWriter->startElement('a:solidFill');
+ $objWriter->startElement('a:srgbClr');
+ $objWriter->writeAttribute('val', $fillColor);
+ $objWriter->endElement();
+ $objWriter->endElement();
+ $objWriter->endElement();
+ }
+ }
  $objWriter->startElement('c:idx');
  $objWriter->writeAttribute('val', $this->_seriesIndex + $plotSeriesIdx);
  $objWriter->endElement();