tdf#112557: Subtitle placeholder shape leads to corrupted PPTX file

Change-Id: I26680ecdb5f0db4f27180c221de062341af0265c
Reviewed-on: https://gerrit.libreoffice.org/42611Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tamás Zolnai <tamas.zolnai@collabora.com>

sd/qa/unit/export-tests-ooxml2.cxx

@@ -110,6 +110,7 @@ public:
     void testTdf112088();
     void testTdf112333();
     void testTdf112552();
+    void testTdf112557();
 
     CPPUNIT_TEST_SUITE(SdOOXMLExportTest2);
 
@@ -147,6 +148,7 @@ public:
     CPPUNIT_TEST(testTdf112088);
     CPPUNIT_TEST(testTdf112333);
     CPPUNIT_TEST(testTdf112552);
+    CPPUNIT_TEST(testTdf112557);
 
     CPPUNIT_TEST_SUITE_END();
 
@@ -1115,6 +1117,18 @@ void SdOOXMLExportTest2::testTdf112552()
     xDocShRef->DoClose();
 }
 
+void SdOOXMLExportTest2::testTdf112557()
+{
+    // Subtitle shape should be skipped by export.
+    ::sd::DrawDocShellRef xDocShRef = loadURL(m_directories.getURLFromSrc("/sd/qa/unit/data/odp/tdf112557.odp"), ODP);
+    utl::TempFile tempFile;
+    xDocShRef = saveAndReload(xDocShRef.get(), PPTX, &tempFile);
+
+    xmlDocPtr pXmlDocContent = parseExport(tempFile, "ppt/slideMasters/slideMaster1.xml");
+    assertXPath(pXmlDocContent, "/p:sldMaster/p:cSld/p:spTree/p:sp", 2); // title and object
+    xDocShRef->DoClose();
+}
+
 CPPUNIT_TEST_SUITE_REGISTRATION(SdOOXMLExportTest2);
 
 CPPUNIT_PLUGIN_IMPLEMENT();

sd/source/filter/eppt/pptx-epptooxml.cxx

@@ -322,8 +322,11 @@ ShapeExport& PowerPointShapeExport::WriteUnknownShape(const Reference< XShape >&
     }
     else if (sShapeType == "com.sun.star.presentation.SubtitleShape")
     {
-        if (!WritePlaceholder(xShape, Subtitle, mbMaster))
-            ShapeExport::WriteTextShape(xShape);
+        if(mePageType != MASTER)
+        {
+            if (!WritePlaceholder(xShape, Subtitle, mbMaster))
+                ShapeExport::WriteTextShape(xShape);
+        }
     }
     else
         SAL_WARN("sd.eppt", "unknown shape not handled: " << USS(sShapeType));
@@ -2035,7 +2038,7 @@ void PowerPointExport::ImplWriteSlideMaster(sal_uInt32 nPageNum, Reference< XPro
     pFS->startElementNS(XML_p, XML_cSld, FSEND);
 
     ImplWriteBackground(pFS, aXBackgroundPropSet);
-    WriteShapeTree(pFS, LAYOUT, true);
+    WriteShapeTree(pFS, MASTER, true);
 
     pFS->endElementNS(XML_p, XML_cSld);
 
@@ -2199,7 +2202,7 @@ void PowerPointExport::WriteShapeTree(const FSHelperPtr& pFS, PageType ePageType
 
 ShapeExport& PowerPointShapeExport::WritePageShape(const Reference< XShape >& xShape, PageType ePageType, bool bPresObj)
 {
-    if ((ePageType == NOTICE && bPresObj) || ePageType == LAYOUT)
+    if ((ePageType == NOTICE && bPresObj) || ePageType == LAYOUT || ePageType == MASTER)
         return WritePlaceholderShape(xShape, SlideImage);
 
     return WriteTextShape(xShape);