vcl/win/source/gdi/gdiimpl.cxx | 44 +++++++++++++++++++++++++++++------------
1 file changed, 32 insertions(+), 12 deletions(-)
New commits:
commit f9578581e61d7c1419e7df84789e25ae0af0aed4
Author: Armin Le Grand <armin.le.gr...@cib.de>
Date: Wed Apr 13 16:39:42 2016 +0200
tdf#40863 only use polygons with area for WinClipRegions
Due to a former fix CustomShapes have extra polygons with a single
point in the top-left and bottom-right corner of their BoundRect,
a workaround to allow getting their correct BoundRect in slideshow.
Unfortunately this makes the win command CreatePolyPolygonRgn fail
to create the needed ClipRegions so that the geometry is processed
without clipping. Changed to only use polygons as input that have an
area.
Change-Id: I0eeda5776402777ed00de92f42a55f206575f58b
Reviewed-on: https://gerrit.libreoffice.org/24059
Reviewed-by: Noel Grandin <noelgran...@gmail.com>
Tested-by: Jenkins <c...@libreoffice.org>
Reviewed-by: Armin Le Grand <armin.le.gr...@cib.de>
Reviewed-on: https://gerrit.libreoffice.org/24114
diff --git a/vcl/win/source/gdi/gdiimpl.cxx b/vcl/win/source/gdi/gdiimpl.cxx
index 89093bb..6ed1f42 100644
--- a/vcl/win/source/gdi/gdiimpl.cxx
+++ b/vcl/win/source/gdi/gdiimpl.cxx
@@ -1148,6 +1148,7 @@ bool WinSalGraphicsImpl::setClipRegion( const
vcl::Region& i_rClip )
aPolyPoints.reserve( 1024 );
std::vector< INT > aPolyCounts( nCount, 0 );
basegfx::B2DHomMatrix aExpand;
+ sal_uInt32 nTargetCount(0);
static bool bExpandByOneInXandY(true);
if(bExpandByOneInXandY)
@@ -1164,26 +1165,45 @@ bool WinSalGraphicsImpl::setClipRegion( const
vcl::Region& i_rClip )
aPolyPolygon.getB2DPolygon(a),
1));
const sal_uInt32 nPoints(aPoly.count());
- aPolyCounts[a] = nPoints;
- for( sal_uInt32 b = 0; b < nPoints; b++ )
+ // tdf#40863 For CustomShapes there is a hack (see
+ // f64ef72743e55389e446e0d4bc6febd475011023) that adds polygons
+ // with a single point in top-left and bottom-right corner
+ // of the BoundRect to be able to determine the correct
BoundRect
+ // in the slideshow. Unfortunately, CreatePolyPolygonRgn below
+ // fails with polygons containing a single pixel, so clipping
is
+ // lost. For now, use only polygons with more than two points
- the
+ // ones that may have an area.
+ // Note: polygons with one point which are curves may have an
area,
+ // but the polygon is already subdivided here, so no need to
test
+ // this.
+ if(nPoints > 2)
{
- basegfx::B2DPoint aPt(aPoly.getB2DPoint(b));
+ aPolyCounts[nTargetCount] = nPoints;
+ nTargetCount++;
- if(bExpandByOneInXandY)
+ for( sal_uInt32 b = 0; b < nPoints; b++ )
{
- aPt = aExpand * aPt;
- }
+ basegfx::B2DPoint aPt(aPoly.getB2DPoint(b));
+
+ if(bExpandByOneInXandY)
+ {
+ aPt = aExpand * aPt;
+ }
- POINT aPOINT;
- // #i122149# do correct rounding
- aPOINT.x = basegfx::fround(aPt.getX());
- aPOINT.y = basegfx::fround(aPt.getY());
- aPolyPoints.push_back( aPOINT );
+ POINT aPOINT;
+ // #i122149# do correct rounding
+ aPOINT.x = basegfx::fround(aPt.getX());
+ aPOINT.y = basegfx::fround(aPt.getY());
+ aPolyPoints.push_back( aPOINT );
+ }
}
}
- mrParent.mhRegion = CreatePolyPolygonRgn( &aPolyPoints[0],
&aPolyCounts[0], nCount, ALTERNATE );
+ if(nTargetCount)
+ {
+ mrParent.mhRegion = CreatePolyPolygonRgn( &aPolyPoints[0],
&aPolyCounts[0], nTargetCount, ALTERNATE );
+ }
}
}
else
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