From 13fc647d01915891abee0ce106f910223772cf9c Mon Sep 17 00:00:00 2001
From: Maxim Bulygin <maxim.bulygin@fcg.aero>
Date: Thu, 24 May 2018 17:03:35 +0300
Subject: [PATCH 1/3] html writes / setup table cell color

---
 src/PhpWord/Writer/HTML/Element/Table.php | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/PhpWord/Writer/HTML/Element/Table.php b/src/PhpWord/Writer/HTML/Element/Table.php
index 844066f49e..866ce1bf0d 100644
--- a/src/PhpWord/Writer/HTML/Element/Table.php
+++ b/src/PhpWord/Writer/HTML/Element/Table.php
@@ -50,6 +50,14 @@ public function write()
                 $rowCellCount = count($rowCells);
                 for ($j = 0; $j < $rowCellCount; $j++) {
                     $cellStyle = $rowCells[$j]->getStyle();
+                    $cellBgColor = $cellStyle->getBgColor();
+                    $cellFgColor = null;
+                    if ($cellBgColor) {
+                        $r = hexdec(substr($cellBgColor, 0, 2));
+                        $g = hexdec(substr($cellBgColor, 2, 2));
+                        $b = hexdec(substr($cellBgColor, 4, 2));
+                        $cellFgColor = (($r * 0.299 + $g * 0.587 + $b * 0.114) > 186) ? null : 'ffffff';
+                    }
                     $cellColSpan = $cellStyle->getGridSpan();
                     $cellRowSpan = 1;
                     $cellVMerge = $cellStyle->getVMerge();
@@ -73,7 +81,9 @@ public function write()
                         $cellTag = $tblHeader ? 'th' : 'td';
                         $cellColSpanAttr = (is_numeric($cellColSpan) && ($cellColSpan > 1) ? " colspan=\"{$cellColSpan}\"" : '');
                         $cellRowSpanAttr = ($cellRowSpan > 1 ? " rowspan=\"{$cellRowSpan}\"" : '');
-                        $content .= "<{$cellTag}{$cellColSpanAttr}{$cellRowSpanAttr}>" . PHP_EOL;
+                        $cellBgColorAttr = (is_null($cellBgColor) ? '' : " bgcolor=\"#{$cellBgColor}\"");
+                        $cellFgColorAttr = (is_null($cellFgColor) ? '' : " color=\"#{$cellFgColor}\"");
+                        $content .= "<{$cellTag}{$cellColSpanAttr}{$cellRowSpanAttr}{$cellBgColorAttr}{$cellFgColorAttr}>" . PHP_EOL;
                         $writer = new Container($this->parentWriter, $rowCells[$j]);
                         $content .= $writer->write();
                         if ($cellRowSpan > 1) {

From e40449e7c8691af4dbfefd43e7937acc46e8ce34 Mon Sep 17 00:00:00 2001
From: Maxim Bulygin <maxim.bulygin@fcg.aero>
Date: Thu, 24 May 2018 17:40:21 +0300
Subject: [PATCH 2/3] fix variable names

---
 src/PhpWord/Writer/HTML/Element/Table.php | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/PhpWord/Writer/HTML/Element/Table.php b/src/PhpWord/Writer/HTML/Element/Table.php
index 866ce1bf0d..2f10df4159 100644
--- a/src/PhpWord/Writer/HTML/Element/Table.php
+++ b/src/PhpWord/Writer/HTML/Element/Table.php
@@ -53,10 +53,10 @@ public function write()
                     $cellBgColor = $cellStyle->getBgColor();
                     $cellFgColor = null;
                     if ($cellBgColor) {
-                        $r = hexdec(substr($cellBgColor, 0, 2));
-                        $g = hexdec(substr($cellBgColor, 2, 2));
-                        $b = hexdec(substr($cellBgColor, 4, 2));
-                        $cellFgColor = (($r * 0.299 + $g * 0.587 + $b * 0.114) > 186) ? null : 'ffffff';
+                        $red = hexdec(substr($cellBgColor, 0, 2));
+                        $green = hexdec(substr($cellBgColor, 2, 2));
+                        $blue = hexdec(substr($cellBgColor, 4, 2));
+                        $cellFgColor = (($red * 0.299 + $green * 0.587 + $blue * 0.114) > 186) ? null : 'ffffff';
                     }
                     $cellColSpan = $cellStyle->getGridSpan();
                     $cellRowSpan = 1;

From 57ae7008b2fcd5941f2ddf487a13e9e2e616231d Mon Sep 17 00:00:00 2001
From: Maxim Bulygin <maxim.bulygin@fcg.aero>
Date: Fri, 1 Mar 2019 16:31:47 +0200
Subject: [PATCH 3/3] add test to auto invert text color

---
 tests/PhpWord/Writer/HTML/ElementTest.php | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/tests/PhpWord/Writer/HTML/ElementTest.php b/tests/PhpWord/Writer/HTML/ElementTest.php
index 90044b9293..6ef02754a4 100644
--- a/tests/PhpWord/Writer/HTML/ElementTest.php
+++ b/tests/PhpWord/Writer/HTML/ElementTest.php
@@ -85,10 +85,10 @@ public function testWriteColSpan()
         $section = $phpWord->addSection();
         $table = $section->addTable();
         $row1 = $table->addRow();
-        $cell11 = $row1->addCell(1000, array('gridSpan' => 2));
+        $cell11 = $row1->addCell(1000, array('gridSpan' => 2, 'bgColor' => '6086B8'));
         $cell11->addText('cell spanning 2 bellow');
         $row2 = $table->addRow();
-        $cell21 = $row2->addCell(500);
+        $cell21 = $row2->addCell(500, array('bgColor' => 'ffffff'));
         $cell21->addText('first cell');
         $cell22 = $row2->addCell(500);
         $cell22->addText('second cell');
@@ -99,6 +99,11 @@ public function testWriteColSpan()
         $this->assertTrue($xpath->query('/html/body/table/tr[1]/td')->length == 1);
         $this->assertEquals('2', $xpath->query('/html/body/table/tr/td[1]')->item(0)->attributes->getNamedItem('colspan')->textContent);
         $this->assertTrue($xpath->query('/html/body/table/tr[2]/td')->length == 2);
+
+        $this->assertEquals('#6086B8', $xpath->query('/html/body/table/tr[1]/td')->item(0)->attributes->getNamedItem('bgcolor')->textContent);
+        $this->assertEquals('#ffffff', $xpath->query('/html/body/table/tr[1]/td')->item(0)->attributes->getNamedItem('color')->textContent);
+        $this->assertEquals('#ffffff', $xpath->query('/html/body/table/tr[2]/td')->item(0)->attributes->getNamedItem('bgcolor')->textContent);
+        $this->assertNull($xpath->query('/html/body/table/tr[2]/td')->item(0)->attributes->getNamedItem('color'));
     }
 
     /**