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| author | Michael Stahl <mstahl@redhat.com> | 2015-05-15 22:46:18 +0200 |
|---|---|---|
| committer | Michael Stahl <mstahl@redhat.com> | 2015-05-15 22:49:12 +0200 |
| commit | c8dad7ebb7c1738ae1348f92d67124c165d83f00 (patch) | |
| tree | c1291e643f2ee73b663c72564763ab7983ac06de | |
| parent | 6ea1d1d341988cf36682c4362aa6badbfb114ff9 (diff) | |
tdf#91195: vcl: reduce MapMode Fraction precision to avoid...
... overlow in ImplMapLogicToPixel. 50 bits is still too much, 44
appears to work for exporting PNG.
DocumentToGraphicRenderer::renderToGraphic() converts a double to
Fraction which is the source of the excess precision.
Change-Id: I93b11ef3a8be1c2f816f9697e5cd33eb00f7c2f9
| -rw-r--r-- | vcl/source/gdi/mapmod.cxx | 2 | ||||
| -rw-r--r-- | vcl/source/outdev/map.cxx | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/vcl/source/gdi/mapmod.cxx b/vcl/source/gdi/mapmod.cxx index b3b71c54582f..8980a8d30719 100644 --- a/vcl/source/gdi/mapmod.cxx +++ b/vcl/source/gdi/mapmod.cxx @@ -193,6 +193,7 @@ void MapMode::SetScaleX( const Fraction& rScaleX ) ImplMakeUnique(); mpImplMapMode->maScaleX = rScaleX; + mpImplMapMode->maScaleX.ReduceInaccurate(44); } void MapMode::SetScaleY( const Fraction& rScaleY ) @@ -200,6 +201,7 @@ void MapMode::SetScaleY( const Fraction& rScaleY ) ImplMakeUnique(); mpImplMapMode->maScaleY = rScaleY; + mpImplMapMode->maScaleY.ReduceInaccurate(44); } MapMode& MapMode::operator=( const MapMode& rMapMode ) diff --git a/vcl/source/outdev/map.cxx b/vcl/source/outdev/map.cxx index e7eed8872143..6e34573bf303 100644 --- a/vcl/source/outdev/map.cxx +++ b/vcl/source/outdev/map.cxx @@ -78,6 +78,7 @@ static Fraction ImplMakeFraction( long nN1, long nN2, long nD1, long nD2 ) aF = Fraction( i*nN1, nD1 ) * Fraction( nN2, nD2 ); } + aF.ReduceInaccurate(44); return aF; } |