tdf#116436 doc export: add missing table background fill

MS formats only have support for Table and Cell fill.

Interestingly, MS Word doesn't let the cells inherit from
the Table fill setting,
so that value also needs to be written out into every cell.

Since Word apparently ignores the table color, I didn't
bother trying to search out how to export that in DOC
format.  (I did add it to DOCX since it was so easy to find.)

Change-Id: I8946f07b45f72fed5959369182882a7bf013b1d0
Reviewed-on: https://gerrit.libreoffice.org/59281
Tested-by: Jenkins
Reviewed-by: Justin Luth <justin_luth@sil.org>

sw/qa/extras/ww8export/ww8export2.cxx

@@ -67,6 +67,19 @@ DECLARE_WW8EXPORT_TEST(testTdf55528_relativeTableWidth, "tdf55528_relativeTableW
     CPPUNIT_ASSERT_EQUAL_MESSAGE("Table relative width percent", sal_Int16(98), getProperty<sal_Int16>(xTable, "RelativeWidth"));
  }
 
+DECLARE_WW8EXPORT_TEST(testTdf116436_tableBackground, "tdf116436_tableBackground.odt")
+{
+    uno::Reference<text::XTextTablesSupplier> xTextTablesSupplier(mxComponent, uno::UNO_QUERY);
+    uno::Reference<container::XIndexAccess> xTables(xTextTablesSupplier->getTextTables(), uno::UNO_QUERY);
+    uno::Reference<text::XTextTable> xTable(xTables->getByIndex(0), uno::UNO_QUERY);
+    uno::Reference<table::XCell> xCell = xTable->getCellByName("A1");
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(0xF8DF7C), getProperty<sal_Int32>(xCell, "BackColor"));
+    xCell.set(xTable->getCellByName("A6"));
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(0x81D41A), getProperty<sal_Int32>(xCell, "BackColor"));
+    xCell.set(xTable->getCellByName("B6"));
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(0xFFFBCC), getProperty<sal_Int32>(xCell, "BackColor"));
+}
+
 DECLARE_WW8EXPORT_TEST(testTdf37153, "tdf37153_considerWrapOnObjPos.doc")
 {
     CPPUNIT_ASSERT_EQUAL(text::WrapTextMode_THROUGH, getProperty<text::WrapTextMode>(getShape(1), "Surround"));

sw/source/filter/ww8/wrtww8.cxx

@@ -2582,6 +2582,7 @@ void WW8AttributeOutput::TableCellBorders(
 
 void WW8AttributeOutput::TableBackgrounds( ww8::WW8TableNodeInfoInner::Pointer_t pTableTextNodeInfoInner )
 {
+    const SwTable * pTab = pTableTextNodeInfoInner->getTable();
     const SwTableBox * pTabBox = pTableTextNodeInfoInner->getTableBox();
     const SwTableLine * pTabLine = pTabBox->GetUpper();
     const SwTableBoxes & rTabBoxes = pTabLine->GetTabBoxes();
@@ -2590,19 +2591,24 @@ void WW8AttributeOutput::TableBackgrounds( ww8::WW8TableNodeInfoInner::Pointer_t
     m_rWW8Export.InsUInt16( NS_sprm::sprmTDefTableShd80 );
     m_rWW8Export.pO->push_back( static_cast<sal_uInt8>(nBoxes * 2) );  // Len
 
+    Color aRowColor = COL_AUTO;
+    const SvxBrushItem *pTableColorProp = pTab->GetFrameFormat()->GetAttrSet().GetItem<SvxBrushItem>(RES_BACKGROUND);
+    if ( pTableColorProp )
+        aRowColor = pTableColorProp->GetColor();
+
+    const SvxBrushItem *pRowColorProp = pTabLine->GetFrameFormat()->GetAttrSet().GetItem<SvxBrushItem>(RES_BACKGROUND);
+    if ( pRowColorProp && pRowColorProp->GetColor() != COL_AUTO )
+        aRowColor = pRowColorProp->GetColor();
+
     for ( sal_uInt8 n = 0; n < nBoxes; n++ )
     {
         const SwTableBox * pBox1 = rTabBoxes[n];
         const SwFrameFormat * pFrameFormat = pBox1->GetFrameFormat();
-        const SfxPoolItem * pI = nullptr;
-        Color aColor;
+        Color aColor = aRowColor;
 
-        if ( SfxItemState::SET == pFrameFormat->GetAttrSet().GetItemState( RES_BACKGROUND, false, &pI ) )
-        {
-            aColor = dynamic_cast<const SvxBrushItem *>(pI)->GetColor();
-        }
-        else
-            aColor = COL_AUTO;
+        const SvxBrushItem *pCellColorProp = pFrameFormat->GetAttrSet().GetItem<SvxBrushItem>(RES_BACKGROUND);
+        if ( pCellColorProp && pCellColorProp->GetColor() != COL_AUTO )
+            aColor = pCellColorProp->GetColor();
 
         WW8_SHD aShd;
         WW8Export::TransBrush( aColor, aShd );
@@ -2624,17 +2630,11 @@ void WW8AttributeOutput::TableBackgrounds( ww8::WW8TableNodeInfoInner::Pointer_t
         {
             const SwTableBox * pBox1 = rTabBoxes[n];
             const SwFrameFormat * pFrameFormat = pBox1->GetFrameFormat();
-            const SfxPoolItem * pI = nullptr;
-            Color aColor;
+            Color aColor = aRowColor;
 
-                if ( SfxItemState::SET ==
-                         pFrameFormat->GetAttrSet().
-                         GetItemState( RES_BACKGROUND, false, &pI ) )
-            {
-                aColor = dynamic_cast<const SvxBrushItem *>(pI)->GetColor();
-            }
-            else
-                aColor = COL_AUTO;
+            const SvxBrushItem *pCellColorProp = pFrameFormat->GetAttrSet().GetItem<SvxBrushItem>(RES_BACKGROUND);
+            if ( pCellColorProp && pCellColorProp->GetColor() != COL_AUTO )
+                aColor = pCellColorProp->GetColor();
 
             WW8SHDLong aSHD;
             aSHD.setCvFore( 0xFF000000 );