bnc#593614: Avoid rendering artefacts in presentation mode.

By not using XOR rendering, see also fdo#38844.
The first variant seems to work better.

Basically, this is just cherry-pick of
bb5c7d6a79309236d4f19bb2498f2e850f735a2f

Change-Id: I0fdccf60601a47c91f467f9d1321d1c25f1ef68c
Reviewed-on: https://gerrit.libreoffice.org/9824
Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>

1 files changed, 4 insertions, 23 deletions

diff --git a/vcl/source/gdi/outdev4.cxx b/vcl/source/gdi/outdev4.cxx
index 1be80e94b91b..e817e57d6632 100644
--- a/vcl/source/gdi/outdev4.cxx
+++ b/vcl/source/gdi/outdev4.cxx
@@ -740,29 +740,10 @@ void OutputDevice::DrawGradient( const PolyPolygon& rPolyPoly,
             mpMetaFile->AddAction( new MetaCommentAction( "XGRAD_SEQ_BEGIN" ) );
             mpMetaFile->AddAction( new MetaGradientExAction( rPolyPoly, rGradient ) );
 
-            if( OUTDEV_PRINTER == meOutDevType )
-            {
-                Push( PUSH_CLIPREGION );
-                IntersectClipRegion(Region(rPolyPoly));
-                DrawGradient( aRect, rGradient );
-                Pop();
-            }
-            else
-            {
-                const sal_Bool  bOldOutput = IsOutputEnabled();
-
-                EnableOutput( sal_False );
-                Push( PUSH_RASTEROP );
-                SetRasterOp( ROP_XOR );
-                DrawGradient( aRect, rGradient );
-                SetFillColor( COL_BLACK );
-                SetRasterOp( ROP_0 );
-                DrawPolyPolygon( rPolyPoly );
-                SetRasterOp( ROP_XOR );
-                DrawGradient( aRect, rGradient );
-                Pop();
-                EnableOutput( bOldOutput );
-            }
+            Push( PUSH_CLIPREGION );
+            IntersectClipRegion(Region(rPolyPoly));
+            DrawGradient( aRect, rGradient );
+            Pop();
 
             mpMetaFile->AddAction( new MetaCommentAction( "XGRAD_SEQ_END" ) );
         }