tdf#148929 sd theme: limit PPTX import for shape fill effects to lum mod/off

Regression from 30735bdb5a0a81619000fdd24b2d0fbf45687f01 (sd theme: add PPTX
import for shape fill color effects, 2022-04-27), the bugdoc's A2 cell
lost its tinting (its background color is no longer lighter than A1)
after saving back to PPTX + import again.

The code assumed that in case a fill color has effects, it can only be
luminance offset or modulation, since that's what the PowerPoint UI
generates when setting a fill color explicitly. This did not take the
table style case into account, which uses tinting to make a color
lighter.

Fix the problem by not importing the theme index / effects if tinting is
used -- the current doc model is limited to theme index + lum mod/off
with effects.

This limitation can be removed while text color / fill color effects are
not limited to lum mod/off, but also support tinting/shading.

Change-Id: I382cc0067518cc262e261a462999170cb7db261b
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/133908
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/oox/drawingml/color.hxx b/include/oox/drawingml/color.hxx
index cc65c1346720..b28c926986ca 100644
--- a/include/oox/drawingml/color.hxx
+++ b/include/oox/drawingml/color.hxx
@@ -99,7 +99,7 @@ public:
     /** Returns the scheme name from the a:schemeClr element for interoperability purposes */
     const OUString&     getSchemeColorName() const { return msSchemeName; }
     sal_Int16           getSchemeColorIndex() const;
-    sal_Int16           getTintOrShade();
+    sal_Int16           getTintOrShade() const;
     sal_Int16           getLumMod() const;
     sal_Int16           getLumOff() const;