diff options
Diffstat (limited to 'canvas/source/cairo/cairo_canvashelper.cxx')
-rw-r--r-- | canvas/source/cairo/cairo_canvashelper.cxx | 50 |
1 files changed, 45 insertions, 5 deletions
diff --git a/canvas/source/cairo/cairo_canvashelper.cxx b/canvas/source/cairo/cairo_canvashelper.cxx index 9cf2dd978759..5469010f2745 100644 --- a/canvas/source/cairo/cairo_canvashelper.cxx +++ b/canvas/source/cairo/cairo_canvashelper.cxx @@ -958,6 +958,7 @@ namespace cairocanvas void CanvasHelper::doPolyPolygonPath( const uno::Reference< rendering::XPolyPolygon2D >& xPolyPolygon, Operation aOperation, + bool bNoLineJoin, const uno::Sequence< rendering::Texture >* pTextures, Cairo* pCairo ) const { @@ -967,10 +968,46 @@ namespace cairocanvas if( !pCairo ) pCairo = mpCairo.get(); - doPolyPolygonImplementation( rPolyPoly, aOperation, - pCairo, pTextures, - mpSurfaceProvider, - xPolyPolygon->getFillRule() ); + if(bNoLineJoin && Stroke == aOperation) + { + // emulate rendering::PathJoinType::NONE by painting single edges + for(sal_uInt32 a(0); a < rPolyPoly.count(); a++) + { + const basegfx::B2DPolygon aCandidate(rPolyPoly.getB2DPolygon(a)); + const sal_uInt32 nPointCount(aCandidate.count()); + + if(nPointCount) + { + const sal_uInt32 nEdgeCount(aCandidate.isClosed() ? nPointCount + 1: nPointCount); + basegfx::B2DPolygon aEdge; + aEdge.append(aCandidate.getB2DPoint(0)); + aEdge.append(basegfx::B2DPoint(0.0, 0.0)); + + for(sal_uInt32 a(0); a < nEdgeCount; a++) + { + const sal_uInt32 nNextIndex((a + 1) % nPointCount); + aEdge.setB2DPoint(1, aCandidate.getB2DPoint(nNextIndex)); + aEdge.setNextControlPoint(0, aCandidate.getNextControlPoint(a)); + aEdge.setPrevControlPoint(1, aCandidate.getPrevControlPoint(nNextIndex)); + + doPolyPolygonImplementation( aEdge, aOperation, + pCairo, pTextures, + mpSurfaceProvider, + xPolyPolygon->getFillRule() ); + + // prepare next step + aEdge.setB2DPoint(0, aEdge.getB2DPoint(1)); + } + } + } + } + else + { + doPolyPolygonImplementation( rPolyPoly, aOperation, + pCairo, pTextures, + mpSurfaceProvider, + xPolyPolygon->getFillRule() ); + } } uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawPolyPolygon( const rendering::XCanvas* , @@ -1039,9 +1076,12 @@ namespace cairocanvas break; } + bool bNoLineJoin(false); + switch( strokeAttributes.JoinType ) { // cairo doesn't have join type NONE so we use MITER as it's pretty close case rendering::PathJoinType::NONE: + bNoLineJoin = true; case rendering::PathJoinType::MITER: cairo_set_line_join( mpCairo.get(), CAIRO_LINE_JOIN_MITER ); break; @@ -1063,7 +1103,7 @@ namespace cairocanvas // TODO(rodo) use LineArray of strokeAttributes - doPolyPolygonPath( xPolyPolygon, Stroke ); + doPolyPolygonPath( xPolyPolygon, Stroke, bNoLineJoin ); cairo_restore( mpCairo.get() ); } else |