office-gobmx/drawinglayer/source/primitive2d/primitivetools2d.cxx

/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: baseprimitive2d.cxx,v $
 *
 *  $Revision: 1.6 $
 *
 *  last change: $Author: aw $ $Date: 2008-05-27 14:11:20 $
 *
 *  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
 *
 ************************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_drawinglayer.hxx"

#include <drawinglayer/primitive2d/primitivetools2d.hxx>
#include <basegfx/vector/b2dvector.hxx>
#include <drawinglayer/geometry/viewinformation2d.hxx>

//////////////////////////////////////////////////////////////////////////////

namespace drawinglayer
{
    namespace primitive2d
    {
        Primitive2DSequence DiscreteMetricDependentPrimitive2D::get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
        {
            ::osl::MutexGuard aGuard( m_aMutex );

            // get the current DiscreteUnit
            const double fDiscreteUnit((rViewInformation.getInverseObjectToViewTransformation() * basegfx::B2DVector(1.0, 0.0)).getLength());

            if(getLocal2DDecomposition().hasElements() && !basegfx::fTools::equal(fDiscreteUnit, getDiscreteUnit()))
            {
                // conditions of last local decomposition have changed, delete
                const_cast< DiscreteMetricDependentPrimitive2D* >(this)->setLocal2DDecomposition(Primitive2DSequence());
            }

            if(!getLocal2DDecomposition().hasElements())
            {
                // remember new valid DiscreteUnit
                const_cast< DiscreteMetricDependentPrimitive2D* >(this)->mfDiscreteUnit = fDiscreteUnit;
            }

            // call base implementation
            return BufferedDecompositionPrimitive2D::get2DDecomposition(rViewInformation);
        }
    } // end of namespace primitive2d
} // end of namespace drawinglayer

//////////////////////////////////////////////////////////////////////////////

namespace drawinglayer
{
    namespace primitive2d
    {
        Primitive2DSequence ViewportDependentPrimitive2D::get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
        {
            ::osl::MutexGuard aGuard( m_aMutex );

            // get the current Viewport
            const basegfx::B2DRange& rViewport = rViewInformation.getViewport();

            if(getLocal2DDecomposition().hasElements() && !rViewport.equal(getViewport()))
            {
                // conditions of last local decomposition have changed, delete
                const_cast< ViewportDependentPrimitive2D* >(this)->setLocal2DDecomposition(Primitive2DSequence());
            }

            if(!getLocal2DDecomposition().hasElements())
            {
                // remember new valid DiscreteUnit
                const_cast< ViewportDependentPrimitive2D* >(this)->maViewport = rViewport;
            }

            // call base implementation
            return BufferedDecompositionPrimitive2D::get2DDecomposition(rViewInformation);
        }
    } // end of namespace primitive2d
} // end of namespace drawinglayer

//////////////////////////////////////////////////////////////////////////////
// eof