Author: alg
Date: Mon Jan 30 15:42:40 2012
New Revision: 1237725
URL: http://svn.apache.org/viewvc?rev=1237725&view=rev
Log:
#118855# Corrected handling of possibly created empty clipRegions after
PolyPolygon clipping
Modified:
incubator/ooo/trunk/main/vcl/source/gdi/outdev.cxx
incubator/ooo/trunk/main/vcl/source/gdi/region.cxx
Modified: incubator/ooo/trunk/main/vcl/source/gdi/outdev.cxx
URL:
http://svn.apache.org/viewvc/incubator/ooo/trunk/main/vcl/source/gdi/outdev.cxx?rev=1237725&r1=1237724&r2=1237725&view=diff
==============================================================================
--- incubator/ooo/trunk/main/vcl/source/gdi/outdev.cxx (original)
+++ incubator/ooo/trunk/main/vcl/source/gdi/outdev.cxx Mon Jan 30 15:42:40 2012
@@ -998,7 +998,16 @@ void OutputDevice::ImplInitClipRegion()
mnOutOffY+GetOutputHeightPixel()-1 );
aRegion.Intersect( aDeviceBounds );
}
- ImplSelectClipRegion( aRegion );
+
+ if ( aRegion.IsEmpty() )
+ {
+ mbOutputClipped = sal_True;
+ }
+ else
+ {
+ mbOutputClipped = sal_False;
+ ImplSelectClipRegion( aRegion );
+ }
}
mbClipRegionSet = sal_True;
Modified: incubator/ooo/trunk/main/vcl/source/gdi/region.cxx
URL:
http://svn.apache.org/viewvc/incubator/ooo/trunk/main/vcl/source/gdi/region.cxx?rev=1237725&r1=1237724&r2=1237725&view=diff
==============================================================================
--- incubator/ooo/trunk/main/vcl/source/gdi/region.cxx (original)
+++ incubator/ooo/trunk/main/vcl/source/gdi/region.cxx Mon Jan 30 15:42:40 2012
@@ -1461,6 +1461,14 @@ sal_Bool Region::Intersect( const Rectan
// unnecessary banding
mpImplRegion->mpPolyPoly->Clip( rRect );
+ // The clipping above may lead to empty ClipRegion
+ if(!mpImplRegion->mpPolyPoly->Count())
+ {
+ // react on empty ClipRegion; ImplRegion already is unique (see
above)
+ delete mpImplRegion;
+ mpImplRegion = (ImplRegion*)(&aImplEmptyRegion);
+ }
+
return sal_True;
}
else if( mpImplRegion->mpB2DPolyPoly )
@@ -1473,10 +1481,24 @@ sal_Bool Region::Intersect( const Rectan
}
*mpImplRegion->mpB2DPolyPoly =
- basegfx::tools::clipPolyPolygonOnRange( *mpImplRegion->mpB2DPolyPoly,
- basegfx::B2DRange(
rRect.Left(), rRect.Top(),
-
rRect.Right(), rRect.Bottom() ),
- true, false );
+ basegfx::tools::clipPolyPolygonOnRange(
+ *mpImplRegion->mpB2DPolyPoly,
+ basegfx::B2DRange(
+ rRect.Left(),
+ rRect.Top(),
+ rRect.Right() + 1,
+ rRect.Bottom() + 1),
+ true,
+ false);
+
+ // The clipping above may lead to empty ClipRegion
+ if(!mpImplRegion->mpB2DPolyPoly->count())
+ {
+ // react on empty ClipRegion; ImplRegion already is unique (see
above)
+ delete mpImplRegion;
+ mpImplRegion = (ImplRegion*)(&aImplEmptyRegion);
+ }
+
return sal_True;
}
else
@@ -2083,10 +2105,19 @@ Rectangle Region::GetBoundRect() const
return mpImplRegion->mpPolyPoly->GetBoundRect();
if( mpImplRegion->mpB2DPolyPoly )
{
- const basegfx::B2DRange aRange = basegfx::tools::getRange(
*mpImplRegion->mpB2DPolyPoly );
- aRect.SetPos( Point( (int)aRange.getMinX(),
(int)aRange.getMinY() ) );
- aRect.SetSize( Size( (int)aRange.getWidth(),
(int)aRange.getHeight() ) );
- return aRect;
+ const basegfx::B2DRange
aRange(basegfx::tools::getRange(*mpImplRegion->mpB2DPolyPoly));
+
+ if(aRange.isEmpty())
+ {
+ // emulate PolyPolygon::GetBoundRect() when empty polygon
+ return Rectangle();
+ }
+ else
+ {
+ return Rectangle(
+ static_cast<sal_Int32>(floor(aRange.getMinX())),
static_cast<sal_Int32>(floor(aRange.getMinY())),
+ static_cast<sal_Int32>(ceil(aRange.getMaxX())),
static_cast<sal_Int32>(ceil(aRange.getMaxY())));
+ }
}
// no band in the list? -> region is empty!
