#116162# Forced DRAWMODE_WHITEFILL to DRAWMODE_BLACKFILL during line geometry…

#116162# Forced DRAWMODE_WHITEFILL to DRAWMODE_BLACKFILL during line geometry processing to get line geometry rendered black (as intended) in b&w mode (e.g. print preview)

drawinglayer/source/processor2d/vclmetafileprocessor2d.cxx

@@ -1287,8 +1287,34 @@ namespace drawinglayer
                             &rStrokeArrowPrimitive.getStart(),
                             &rStrokeArrowPrimitive.getEnd());
 
+                        // write LineGeometry start marker
                         impStartSvtGraphicStroke(pSvtGraphicStroke);
+
+                        // #116162# When B&W is set as DrawMode, DRAWMODE_WHITEFILL is used
+                        // to let all fills be just white; for lines DRAWMODE_BLACKLINE is used
+                        // so all line geometry is supposed to get black. Since in the in-between
+                        // stages of line geometry drawing filled polygons are used (e.g. line
+                        // start/ends) it is necessary to change these drawmodes to preserve
+                        // that lines shall be black; thus change DRAWMODE_WHITEFILL to
+                        // DRAWMODE_BLACKFILL during line geometry processing to have line geometry
+                        // parts filled black.
+                        const sal_uLong nOldDrawMode(mpOutputDevice->GetDrawMode());
+                        const bool bDrawmodeChange(nOldDrawMode & DRAWMODE_WHITEFILL && mnSvtGraphicStrokeCount);
+
+                        if(bDrawmodeChange)
+                        {
+                            mpOutputDevice->SetDrawMode((nOldDrawMode & ~DRAWMODE_WHITEFILL) | DRAWMODE_BLACKFILL);
+                        }
+
+                        // process sub-line geometry (evtl. filled PolyPolygons)
                         process(rCandidate.get2DDecomposition(getViewInformation2D()));
+
+                        if(bDrawmodeChange)
+                        {
+                            mpOutputDevice->SetDrawMode(nOldDrawMode);
+                        }
+
+                        // write LineGeometry end marker
                         impEndSvtGraphicStroke(pSvtGraphicStroke);
                     }