sw: ODF import: convert the simplest sub-tables to rowspan tables

Before OOo 2.3, CWS swnewtable, Writer represented complex table
structures as sub-tables, i.e. <table:table table:is-sub-table="true">.

Try to convert these to the modern rowspan tables, which export to
non-ODF formats much easier.

There are some cases where the result is going to look different, or
where further work is required to adapt other things in the document;
leave these alone for now.

Change-Id: I6a6c497089ef886826484d2d723bf57c72f95b14
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/103773
Tested-by: Jenkins
Reviewed-by: Michael Stahl <michael.stahl@cib.de>

1 files changed, 4 insertions, 0 deletions

diff --git a/sw/inc/swtable.hxx b/sw/inc/swtable.hxx
index 66a1795ce183..9694db0113ef 100644
--- a/sw/inc/swtable.hxx
+++ b/sw/inc/swtable.hxx
@@ -168,6 +168,7 @@ private:
     void AdjustWidths( const long nOld, const long nNew );
     void NewSetTabCols( Parm &rP, const SwTabCols &rNew, const SwTabCols &rOld,
                         const SwTableBox *pStart, bool bCurRowOnly );
+    void ConvertSubtableBox(sal_uInt16 const nRow, sal_uInt16 const nBox);
 
 public:
 
@@ -340,6 +341,9 @@ public:
 #endif
 
     bool HasLayout() const;
+
+    bool CanConvertSubtables() const;
+    void ConvertSubtables();
 };
 
 /// SwTableLine is one table row in the document model.