ODF import: workaround dubious draw:fill="solid" on frame styles

Since the gradient frame backgrounds were added in LO 4.1, we export
this:

 fo:background-color="transparent" draw:fill="solid"

Which doesn't make a whole lot of sense as this is really a "none" fill,
and now with the backward compatibility stuff in the style import code
we get the pool default color added when setting the BackTransparent
property, and with the draw:fill="solid" it becomes visible and the
background color is now Sky Blue 1.

So try to detect draw:fill="solid" without draw:fill-color attribute
and contradicting transparent legacy attribute and nerf it.  This way
we also export draw:fill="none" again, although still with a bogus
draw:fill-color but that shouldn't cause any harm.

Change-Id: I1c2bea46ba7d9a3f042b875df0ca12c7f6037909

include/xmloff/txtprmap.hxx

@@ -198,6 +198,8 @@
 #define CTF_RELHEIGHTREL                    (XML_TEXT_CTF_START + 169)
 #define CTF_CHAR_BACKGROUND                 (XML_TEXT_CTF_START + 170)
 #define CTF_CHAR_HIGHLIGHT                  (XML_TEXT_CTF_START + 171)
+#define CTF_FILLSTYLE                       (XML_TEXT_CTF_START + 172)
+#define CTF_FILLCOLOR                       (XML_TEXT_CTF_START + 173)
 
 
 enum class TextPropMap {

sw/qa/extras/odfexport/data/tdf92379.fodt

@@ -36,6 +36,11 @@
         <style:columns fo:column-count="1" fo:column-gap="0in"/>
       </style:graphic-properties>
     </style:style>
+    <style:style style:name="Untitled1" style:family="graphic" style:parent-style-name="encarts">
+      <style:graphic-properties fo:background-color="transparent" style:background-transparency="100%" draw:fill="solid">
+        <style:background-image/>
+      </style:graphic-properties>
+    </style:style>
 
     <!-- "Titre Avis expert" and derived styles from bugdoc -->
     <style:style style:name="Titre_20_Avis_20_expert" style:display-name="Titre Avis expert" style:family="paragraph" style:parent-style-name="Standard" style:master-page-name="">

sw/qa/extras/odfexport/odfexport.cxx

@@ -280,6 +280,23 @@ DECLARE_ODFEXPORT_TEST(testTdf92379, "tdf92379.fodt")
     CPPUNIT_ASSERT_EQUAL(sal_Int32(0xffcc99), getProperty<sal_Int32>(xStyle, "FillColor"));
     CPPUNIT_ASSERT_EQUAL(sal_Int16(0), getProperty<sal_Int16>(xStyle, "FillTransparence"));
 
+    uno::Reference<beans::XPropertySet> xFrameStyle2(xStyles->getByName("Untitled1"),
+            uno::UNO_QUERY);
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(0xffffff), getProperty<sal_Int32>(xFrameStyle2, "BackColorRGB"));
+    CPPUNIT_ASSERT_EQUAL(true, getProperty<bool>(xFrameStyle2, "BackTransparent"));
+    CPPUNIT_ASSERT_EQUAL(sal_Int32(100), getProperty<sal_Int32>(xFrameStyle2, "BackColorTransparency"));
+    CPPUNIT_ASSERT_EQUAL(drawing::FillStyle_NONE, getProperty<drawing::FillStyle>(xFrameStyle2, "FillStyle"));
+// unfortunately this is actually the pool default value, which would be hard to fix - but it isn't a problem because style is NONE
+//    CPPUNIT_ASSERT_EQUAL(sal_Int32(0xffffff), getProperty<sal_Int32>(xFrameStyle2, "FillColor"));
+//    CPPUNIT_ASSERT_EQUAL(sal_Int16(100), getProperty<sal_Int16>(xFrameStyle2, "FillTransparence"));
+
+    if (xmlDocPtr pXmlDoc = parseExport("styles.xml"))
+    {
+        // check that fo:background-color attribute is exported properly
+        assertXPath(pXmlDoc, "//style:style[@style:family='graphic' and @style:name='encarts']/style:graphic-properties[@fo:background-color='#ffcc99']", 1);
+        assertXPath(pXmlDoc, "//style:style[@style:family='graphic' and @style:name='Untitled1']/style:graphic-properties[@fo:background-color='transparent']", 1);
+    }
+
     // paragraph style fo:background-color was wrongly inherited despite being
     // overridden in derived style
     uno::Reference<container::XNameAccess> xParaStyles(getStyles("ParagraphStyles"));

xmloff/source/draw/sdpropls.cxx

@@ -106,8 +106,8 @@ const XMLPropertyMapEntry aXMLSDProperties[] =
     GMAP( "LineCap",                        XML_NAMESPACE_SVG , XML_STROKE_LINECAP,         XML_SD_TYPE_LINECAP, 0 ),
 
     // fill attributes
-    GMAP( "FillStyle",                      XML_NAMESPACE_DRAW, XML_FILL,                   XML_SD_TYPE_FILLSTYLE, 0 ),
-    GMAP_D("FillColor",                     XML_NAMESPACE_DRAW, XML_FILL_COLOR,             XML_TYPE_COLOR, 0),
+    GMAP( "FillStyle",                      XML_NAMESPACE_DRAW, XML_FILL,                   XML_SD_TYPE_FILLSTYLE, CTF_FILLSTYLE ),
+    GMAP_D("FillColor",                     XML_NAMESPACE_DRAW, XML_FILL_COLOR,             XML_TYPE_COLOR, CTF_FILLCOLOR ),
     GMAP_D("FillColor2",                    XML_NAMESPACE_DRAW, XML_SECONDARY_FILL_COLOR,   XML_TYPE_COLOR, 0),
     GMAP( "FillGradientName",               XML_NAMESPACE_DRAW, XML_FILL_GRADIENT_NAME,     XML_TYPE_STYLENAME|MID_FLAG_NO_PROPERTY_IMPORT, CTF_FILLGRADIENTNAME ),
     GMAP( "FillGradientStepCount",          XML_NAMESPACE_DRAW, XML_GRADIENT_STEP_COUNT,    XML_TYPE_NUMBER16, 0 ),

xmloff/source/text/txtimppr.cxx

@@ -20,6 +20,7 @@
 #include <osl/thread.h>
 #include <com/sun/star/awt/FontFamily.hpp>
 #include <com/sun/star/awt/FontPitch.hpp>
+#include <com/sun/star/drawing/FillStyle.hpp>
 #include <com/sun/star/table/BorderLine2.hpp>
 #include <com/sun/star/text/VertOrientation.hpp>
 #include <com/sun/star/text/SizeType.hpp>
@@ -410,6 +411,8 @@ void XMLTextImportPropertyMapper::finished(
     XMLPropertyState* pAllMargin = 0;
     XMLPropertyState* pMargins[4] = { 0, 0, 0, 0 };
     ::std::unique_ptr<XMLPropertyState> pNewMargins[4];
+    XMLPropertyState* pFillStyle(nullptr);
+    XMLPropertyState* pFillColor(nullptr);
 
     for( ::std::vector< XMLPropertyState >::iterator aIter = rProperties.begin();
          aIter != rProperties.end();
@@ -493,6 +496,8 @@ void XMLTextImportPropertyMapper::finished(
                                         bHasAnyWidth = true; break;
         case CTF_BACKGROUND_TRANSPARENCY: pBackTransparency = property; break;
         case CTF_BACKGROUND_TRANSPARENT:  pBackTransparent = property; break;
+        case CTF_FILLSTYLE:             pFillStyle = property; break;
+        case CTF_FILLCOLOR:             pFillColor = property; break;
         case CTF_PARAMARGINALL:
         case CTF_PARAMARGINALL_REL:
                 pAllParaMargin = property; break;
@@ -655,6 +660,15 @@ void XMLTextImportPropertyMapper::finished(
                        pFontStyleNameCTL, pFontFamilyCTL, pFontPitchCTL, pFontCharSetCTL,
                        &pNewFontStyleNameCTL, &pNewFontFamilyCTL, &pNewFontPitchCTL, &pNewFontCharSetCTL );
 
+    if (pFillStyle && !pFillColor && pBackTransparent
+        && drawing::FillStyle_SOLID == pFillStyle->maValue.get<drawing::FillStyle>()
+        && pBackTransparent->maValue.get<bool>())
+    {
+        // fo:background="transparent", draw:fill="solid" without draw:fill-color
+        // prevent getSvxBrushItemFromSourceSet from adding bogus default color
+        pFillStyle->mnIndex = -1;
+    }
+
     // #i5775# don't overwrite %transparency with binary transparency
     if( ( pBackTransparency != NULL ) && ( pBackTransparent != NULL ) )
     {