[API CHANGE] PPTX filter: fix lost hide-while-show prop for slide narrations

The OOXML markup is <p:cMediaNode ... showWhenStopped="0">, but the UI
uses "Hide During Show", which is easier to understand, so use the
second naming in the code.

With this, the PPTX no longer makes the speaker bitmaps on slides
visible while projecting.

API change, because the animation node is only available via UNO, though
it's likely that no actual external code would ever interact with it
directly. (And also add a stub Narration attribute, so that can be
implemented in a follow-up commit without an API change.)

Change-Id: Ia90a2fb30c2bfdb4cff2901fe11bdf1d4ab38261
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/109969
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

1 files changed, 5 insertions, 0 deletions

diff --git a/sd/qa/unit/export-tests-ooxml1.cxx b/sd/qa/unit/export-tests-ooxml1.cxx
index 392aa4a8b32e..b8189c73a87e 100644
--- a/sd/qa/unit/export-tests-ooxml1.cxx
+++ b/sd/qa/unit/export-tests-ooxml1.cxx
@@ -1353,6 +1353,11 @@ void SdOOXMLExportTest1::testNarrationMimeType()
     // i.e. <p:childTnLst> had no <p:audio> children, the whole audio animation node was lost.
     assertXPath(pSlideDoc, "//p:childTnLst/p:audio/p:cMediaNode", 1);
 
+    // Without the accompanying fix in place, this test would have failed with:
+    // - ... no attribute 'showWhenStopped' exist
+    // i.e. <p:cMediaNode> had the default visibility -> bitmap was visible during slideshow.
+    assertXPath(pSlideDoc, "//p:childTnLst/p:audio/p:cMediaNode", "showWhenStopped", "0");
+
     xDocShRef->DoClose();
 }