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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: viewinformation2d.cxx,v $
*
* $Revision: 1.1 $
*
* last change: $Author: aw $ $Date: 2006-10-19 10:40:02 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
#ifndef INCLUDED_DRAWINGLAYER_GEOMETRY_VIEWINFORMATION2D_HXX
#include <drawinglayer/geometry/viewinformation2d.hxx>
#endif
#ifndef _BGFX_MATRIX_B2DHOMMATRIX_HXX
#include <basegfx/matrix/b2dhommatrix.hxx>
#endif
#ifndef _BGFX_RANGE_B2DRANGE_HXX
#include <basegfx/range/b2drange.hxx>
#endif
#ifndef _OSL_MUTEX_HXX_
#include <osl/mutex.hxx>
#endif
#ifndef _BGFX_TOOLS_CANVASTOOLS_HXX
#include <basegfx/tools/canvastools.hxx>
#endif
#ifndef _COM_SUN_STAR_GRAPHIC_PRIMITIVE2DPARAMETERS_HPP_
#include "com/sun/star/graphic/Primitive2DParameters.hpp"
#endif
//////////////////////////////////////////////////////////////////////////////
namespace drawinglayer
{
namespace
{
class ImpViewInformation2D
{
private:
// ViewInformation2D implementation can change refcount, so we have only
// two memory regions for pairs of ViewInformation2D/ImpViewInformation2D
friend class ::drawinglayer::geometry::ViewInformation2D;
// the refcounter
sal_uInt32 mnRefCount;
protected:
// the view transformation
::basegfx::B2DHomMatrix maViewTransformation;
::basegfx::B2DHomMatrix maInverseViewTransformation;
// the visible ranges
::basegfx::B2DRange maViewport;
::basegfx::B2DRange maDiscreteViewport;
// the point in time
double mfViewTime;
// bitfield
unsigned mbInverseValid : 1;
unsigned mbDiscreteViewportValid : 1;
public:
ImpViewInformation2D(
const ::basegfx::B2DHomMatrix& rViewTransformation,
const ::basegfx::B2DRange& rViewport,
double fViewTime)
: mnRefCount(0L),
maViewTransformation(rViewTransformation),
maInverseViewTransformation(maViewTransformation),
maViewport(rViewport),
maDiscreteViewport(),
mfViewTime(fViewTime),
mbInverseValid(false),
mbDiscreteViewportValid(false)
{
}
ImpViewInformation2D(
const ::com::sun::star::graphic::Primitive2DParameters& rParams)
: mnRefCount(0L),
maViewTransformation(basegfx::unotools::homMatrixFromAffineMatrix(rParams.ViewTransformation)),
maInverseViewTransformation(maViewTransformation),
maViewport(basegfx::unotools::b2DRectangleFromRealRectangle2D(rParams.Viewport)),
maDiscreteViewport(),
mfViewTime(rParams.Time),
mbInverseValid(false),
mbDiscreteViewportValid(false)
{
}
bool operator==(const ImpViewInformation2D& rCandidate) const
{
return (maViewTransformation == rCandidate.maViewTransformation
&& mfViewTime == rCandidate.mfViewTime
&& maViewport == rCandidate.maViewport);
}
const ::basegfx::B2DHomMatrix& getViewTransformation() const { return maViewTransformation; }
const ::basegfx::B2DRange& getViewport() const { return maViewport; }
const ::basegfx::B2DRange& getDiscreteViewport() const
{
::osl::Mutex m_mutex;
if(!mbDiscreteViewportValid)
{
::basegfx::B2DRange aDiscreteViewport(maViewport);
aDiscreteViewport.transform(getViewTransformation());
const_cast< ImpViewInformation2D* >(this)->maDiscreteViewport = aDiscreteViewport;
const_cast< ImpViewInformation2D* >(this)->mbDiscreteViewportValid = true;
}
return maDiscreteViewport;
}
const ::basegfx::B2DHomMatrix& getInverseViewTransformation() const
{
::osl::Mutex m_mutex;
if(!mbInverseValid)
{
const_cast< ImpViewInformation2D* >(this)->maInverseViewTransformation.invert();
const_cast< ImpViewInformation2D* >(this)->mbInverseValid = true;
}
return maInverseViewTransformation;
}
double getViewTime() const { return mfViewTime; }
};
} // end of anonymous namespace
} // end of namespace drawinglayer
//////////////////////////////////////////////////////////////////////////////
namespace drawinglayer
{
namespace geometry
{
ViewInformation2D::ViewInformation2D(
const ::basegfx::B2DHomMatrix& rViewTransformation,
const ::basegfx::B2DRange& rViewport,
double fViewTime)
: mpViewInformation2D(new ImpViewInformation2D(rViewTransformation, rViewport, fViewTime))
{
}
ViewInformation2D::ViewInformation2D(
const ::com::sun::star::graphic::Primitive2DParameters& rParams)
: mpViewInformation2D(new ImpViewInformation2D(rParams))
{
}
ViewInformation2D::ViewInformation2D(
const ViewInformation2D& rCandidate)
: mpViewInformation2D(rCandidate.mpViewInformation2D)
{
::osl::Mutex m_mutex;
mpViewInformation2D->mnRefCount++;
}
ViewInformation2D::~ViewInformation2D()
{
::osl::Mutex m_mutex;
if(mpViewInformation2D->mnRefCount)
{
mpViewInformation2D->mnRefCount--;
}
else
{
delete mpViewInformation2D;
}
}
ViewInformation2D& ViewInformation2D::operator=(const ViewInformation2D& rCandidate)
{
::osl::Mutex m_mutex;
if(rCandidate.mpViewInformation2D != mpViewInformation2D)
{
if(mpViewInformation2D->mnRefCount)
{
mpViewInformation2D->mnRefCount--;
}
else
{
delete mpViewInformation2D;
}
mpViewInformation2D = rCandidate.mpViewInformation2D;
mpViewInformation2D->mnRefCount++;
}
return *this;
}
bool ViewInformation2D::operator==(const ViewInformation2D& rCandidate) const
{
if(rCandidate.mpViewInformation2D == mpViewInformation2D)
{
return true;
}
return (*rCandidate.mpViewInformation2D == *mpViewInformation2D);
}
const ::basegfx::B2DHomMatrix& ViewInformation2D::getViewTransformation() const
{
return mpViewInformation2D->getViewTransformation();
}
const ::basegfx::B2DRange& ViewInformation2D::getViewport() const
{
return mpViewInformation2D->getViewport();
}
const ::basegfx::B2DRange& ViewInformation2D::getDiscreteViewport() const
{
return mpViewInformation2D->getDiscreteViewport();
}
const ::basegfx::B2DHomMatrix& ViewInformation2D::getInverseViewTransformation() const
{
return mpViewInformation2D->getInverseViewTransformation();
}
double ViewInformation2D::getViewTime() const
{
return mpViewInformation2D->getViewTime();
}
} // end of namespace geometry
} // end of namespace drawinglayer
//////////////////////////////////////////////////////////////////////////////
// eof
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