tdf#116925 sw: consider fill styles of shape for in-textbox auto color

Automatic color is determined in SwDrawTextInfo::ApplyAutoColor(), but
it uses this function to determine the background color.

Be consistent and consider the same background in both the
shape-with-editeng-text and shape-with-sw-text cases.

Change-Id: I52249a908193765bc128789d96187af334c1017c
Reviewed-on: https://gerrit.libreoffice.org/52687Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>

sw/qa/extras/layout/layout.cxx

@@ -17,9 +17,11 @@ class SwLayoutWriter : public SwModelTestBase
 {
 public:
     void testTdf116830();
+    void testTdf116925();
 
     CPPUNIT_TEST_SUITE(SwLayoutWriter);
     CPPUNIT_TEST(testTdf116830);
+    CPPUNIT_TEST(testTdf116925);
     CPPUNIT_TEST_SUITE_END();
 
 private:
@@ -62,6 +64,26 @@ void SwLayoutWriter::testTdf116830()
     assertXPath(pXmlDoc, "/metafile/push[1]/push[1]/push[1]/push[3]/push[1]/rect", 1);
 }
 
+void SwLayoutWriter::testTdf116925()
+{
+    SwDoc* pDoc = createDoc("tdf116925.docx");
+    SwDocShell* pShell = pDoc->GetDocShell();
+
+    // Dump the rendering of the first page as an XML file.
+    std::shared_ptr<GDIMetaFile> xMetaFile = pShell->GetPreviewMetaFile();
+    MetafileXmlDump dumper;
+    xmlDocPtr pXmlDoc = dumper.dumpAndParse(*xMetaFile);
+    CPPUNIT_ASSERT(pXmlDoc);
+
+    assertXPathContent(pXmlDoc,
+                       "/metafile/push[1]/push[1]/push[1]/push[4]/push[1]/push[3]/textarray/text",
+                       "hello");
+    // This failed, text color was #000000.
+    assertXPath(
+        pXmlDoc,
+        "/metafile/push[1]/push[1]/push[1]/push[4]/push[1]/push[3]/textcolor[@color='#ffffff']", 1);
+}
+
 CPPUNIT_TEST_SUITE_REGISTRATION(SwLayoutWriter);
 CPPUNIT_PLUGIN_IMPLEMENT();
 

sw/source/core/layout/paintfrm.cxx

@@ -102,6 +102,7 @@
 #include <edtwin.hxx>
 #include <view.hxx>
 #include <paintfrm.hxx>
+#include <textboxhelper.hxx>
 #include <o3tl/typed_flags_set.hxx>
 
 #include <vcl/BitmapTools.hxx>
@@ -7129,7 +7130,30 @@ bool SwFrame::GetBackgroundBrush(
             return false;
 
         if (pFrame->supportsFullDrawingLayerFillAttributeSet())
-            rFillAttributes = pFrame->getSdrAllFillAttributesHelper();
+        {
+            bool bTextBox = false;
+            if (pFrame->IsFlyFrame())
+            {
+                const SwFlyFrame* pFlyFrame = static_cast<const SwFlyFrame*>(pFrame);
+                SwFrameFormat* pShape
+                    = SwTextBoxHelper::getOtherTextBoxFormat(pFlyFrame->GetFormat(), RES_FLYFRMFMT);
+                if (pShape)
+                {
+                    SdrObject* pObject = pShape->FindRealSdrObject();
+                    if (pObject)
+                    {
+                        // Work with the fill attributes of the shape of the fly frame.
+                        rFillAttributes.reset(
+                            new drawinglayer::attribute::SdrAllFillAttributesHelper(
+                                pObject->GetMergedItemSet()));
+                        bTextBox = true;
+                    }
+                }
+            }
+
+            if (!bTextBox)
+                rFillAttributes = pFrame->getSdrAllFillAttributesHelper();
+        }
         const SvxBrushItem &rBack = pFrame->GetAttrSet()->GetBackground();
 
         if( pFrame->IsSctFrame() )