pptx: import outside/insde turning cube transition

Change-Id: I12f668aca158a8c868ecaeb37f6724852308a515

oox/source/ppt/slidetransition.cxx

@@ -398,6 +398,13 @@ namespace oox { namespace ppt {
             mnTransitionType = TransitionType::ZOOM;
             mnTransitionSubType = TransitionSubType::DEFAULT;
             break;
+        case P14_TOKEN(prism):
+            mnTransitionType = TransitionType::MISCSHAPEWIPE;
+            if (param1)
+                mnTransitionSubType = TransitionSubType::CORNERSIN;
+            else
+                mnTransitionSubType = TransitionSubType::CORNERSOUT;
+            break;
         default:
             mnTransitionType = 0;
             break;

oox/source/ppt/slidetransitioncontext.cxx

@@ -142,6 +142,15 @@ SlideTransitionContext::~SlideTransitionContext() throw()
         return new SoundActionContext ( *this, maSlideProperties );
     case PPT_TOKEN( extLst ): // CT_OfficeArtExtensionList
         return this;
+
+    case P14_TOKEN(prism):
+        if (!mbHasTransition)
+        {
+            mbHasTransition = true;
+            maTransition.setOoxTransitionType(aElementToken, sal_Int32(rAttribs.getBool(XML_isInverted, false)), 0);
+        }
+        return this;
+
     default:
         break;
     }