tdf#159931: pptx export: export each used slide layout for a master

attempts to fix the slideLayout reference related regression
from Idb6b88ebe87a83818d8eb27a1fa087652a002c0c.

To correctly export the all used slideLayout instances for a
given master, iterate through sdr::PageUsers of that master
and figure out all used layouts.

Change-Id: I0f58befac1ba4d5ec01aeedbb5f611c83683dcf8
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/164468
Tested-by: Jenkins
Reviewed-by: Balazs Varga <balazs.varga.extern@allotropia.de>
Reviewed-by: Sarper Akdemir <sarper.akdemir.extern@allotropia.de>
(cherry picked from commit a35831becee3781daf8628c48944660d31d84d8b)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/164542
(cherry picked from commit a8f058e8ab02643ac2c8d6b6d8fcb3ab45fcf79f)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/164670
Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
Tested-by: Christian Lohmaier <lohmaier+LibreOffice@googlemail.com>
Reviewed-by: Christian Lohmaier <lohmaier+LibreOffice@googlemail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/svx/svdpage.hxx b/include/svx/svdpage.hxx
index 6a65712719f1..76ab049055ca 100644
--- a/include/svx/svdpage.hxx
+++ b/include/svx/svdpage.hxx
@@ -398,6 +398,7 @@ private:
 public:
     void AddPageUser(sdr::PageUser& rNewUser);
     void RemovePageUser(sdr::PageUser& rOldUser);
+    const sdr::PageUserVector& GetPageUsers() const { return maPageUsers; };
 
     // SdrModel access on SdrPage level
     SdrModel& getSdrModelFromSdrPage() const { return mrSdrModelFromSdrPage; }