svtools: survive swapout/in of graphic with embedded pdf

Use case is to insert a pdf file in Impress, then choose Save from the
context menu of the image. On one hand, for some reason only bitmap
images can be saved, so add an exception for the graphic-with-pdf case.
SVG is not affected, as it counts as bitmap with its PNG replacement
image, it seems.

On the other hand, copying the GraphicObject around triggers
swapout/swapin of the graphic, and there the original pdf data was lost,
fix that.

Change-Id: I8b4b67cd951e39b0250a101766f487ddb1088cab
Reviewed-on: https://gerrit.libreoffice.org/26739Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>

sd/source/ui/view/drviews2.cxx

@@ -926,10 +926,10 @@ void DrawViewShell::FuTemporary(SfxRequest& rReq)
             const SdrMarkList& rMarkList = mpDrawView->GetMarkedObjectList();
             if( rMarkList.GetMarkCount() == 1 )
             {
-                SdrObject* pObj = rMarkList.GetMark( 0 )->GetMarkedSdrObj();
-                if( pObj && dynamic_cast< const SdrGrafObj *>( pObj ) !=  nullptr && static_cast<SdrGrafObj*>(pObj)->GetGraphicType() == GraphicType::Bitmap )
+                const SdrGrafObj* pObj = dynamic_cast<const SdrGrafObj*>(rMarkList.GetMark(0)->GetMarkedSdrObj());
+                if (pObj && (pObj->GetGraphicType() == GraphicType::Bitmap || pObj->GetGraphicObject().GetGraphic().getPdfData().hasElements()))
                 {
-                    GraphicObject aGraphicObject( static_cast<SdrGrafObj*>( pObj )->GetGraphicObject() );
+                    GraphicObject aGraphicObject(pObj->GetGraphicObject());
                     {
                         GraphicHelper::ExportGraphic( aGraphicObject.GetGraphic(), "" );
                     }

svtools/source/graphic/grfcache.cxx

@@ -34,6 +34,8 @@
 
 #define MAX_BMP_EXTENT  4096
 
+using namespace com::sun::star;
+
 static const char aHexData[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
 
 class GraphicID
@@ -155,6 +157,7 @@ private:
 
     // SvgData support
     SvgDataPtr          maSvgData;
+    uno::Sequence<sal_Int8> maPdfData;
 
     bool                ImplInit( const GraphicObject& rObj );
     void                ImplFillSubstitute( Graphic& rSubstitute );
@@ -247,6 +250,8 @@ bool GraphicCacheEntry::ImplInit( const GraphicObject& rObj )
             case GraphicType::GdiMetafile:
             {
                 mpMtf = new GDIMetaFile( rGraphic.GetGDIMetaFile() );
+                if (rGraphic.getPdfData().hasElements())
+                    maPdfData = rGraphic.getPdfData();
             }
             break;
 
@@ -293,6 +298,8 @@ void GraphicCacheEntry::ImplFillSubstitute( Graphic& rSubstitute )
     else if( mpMtf )
     {
         rSubstitute = *mpMtf;
+        if (maPdfData.hasElements())
+            rSubstitute.setPdfData(maPdfData);
     }
     else
     {
@@ -379,6 +386,7 @@ void GraphicCacheEntry::GraphicObjectWasSwappedOut( const GraphicObject& /*rObj*
 
         // #119176# also reset SvgData
         maSvgData.reset();
+        maPdfData = uno::Sequence<sal_Int8>();
     }
 }