drawinglayer/source/primitive2d/primitivetools2d.cxx

   1 /*************************************************************************
   2  *
   3  *  OpenOffice.org - a multi-platform office productivity suite
   4  *
   5  *  $RCSfile: baseprimitive2d.cxx,v $
   6  *
   7  *  $Revision: 1.6 $
   8  *
   9  *  last change: $Author: aw $ $Date: 2008-05-27 14:11:20 $
  10  *
  11  *  The Contents of this file are made available subject to
  12  *  the terms of GNU Lesser General Public License Version 2.1.
  13  *
  14  *
  15  *    GNU Lesser General Public License Version 2.1
  16  *    =============================================
  17  *    Copyright 2005 by Sun Microsystems, Inc.
  18  *    901 San Antonio Road, Palo Alto, CA 94303, USA
  19  *
  20  *    This library is free software; you can redistribute it and/or
  21  *    modify it under the terms of the GNU Lesser General Public
  22  *    License version 2.1, as published by the Free Software Foundation.
  23  *
  24  *    This library is distributed in the hope that it will be useful,
  25  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  26  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  27  *    Lesser General Public License for more details.
  28  *
  29  *    You should have received a copy of the GNU Lesser General Public
  30  *    License along with this library; if not, write to the Free Software
  31  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  32  *    MA  02111-1307  USA
  33  *
  34  ************************************************************************/
  35
  36 // MARKER(update_precomp.py): autogen include statement, do not remove
  37 #include "precompiled_drawinglayer.hxx"
  38
  39 #include <drawinglayer/primitive2d/primitivetools2d.hxx>
  40 #include <basegfx/vector/b2dvector.hxx>
  41 #include <drawinglayer/geometry/viewinformation2d.hxx>
  42
  43 //////////////////////////////////////////////////////////////////////////////
  44
  45 namespace drawinglayer
  46 {
  47     namespace primitive2d
  48     {
  49         Primitive2DSequence DiscreteMetricDependentPrimitive2D::get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
  50         {
  51             ::osl::MutexGuard aGuard( m_aMutex );
  52
  53             // get the current DiscreteUnit
  54             const double fDiscreteUnit((rViewInformation.getInverseObjectToViewTransformation() * basegfx::B2DVector(1.0, 0.0)).getLength());
  55
  56             if(getLocalDecomposition().hasElements() && !basegfx::fTools::equal(fDiscreteUnit, getDiscreteUnit()))
  57             {
  58                 // conditions of last local decomposition have changed, delete
  59                 const_cast< DiscreteMetricDependentPrimitive2D* >(this)->setLocalDecomposition(Primitive2DSequence());
  60             }
  61
  62             if(!getLocalDecomposition().hasElements())
  63             {
  64                 // remember new valid DiscreteUnit
  65                 const_cast< DiscreteMetricDependentPrimitive2D* >(this)->mfDiscreteUnit = fDiscreteUnit;
  66             }
  67
  68             // call base implementation
  69             return BasePrimitive2D::get2DDecomposition(rViewInformation);
  70         }
  71     } // end of namespace primitive2d
  72 } // end of namespace drawinglayer
  73
  74 //////////////////////////////////////////////////////////////////////////////
  75
  76 namespace drawinglayer
  77 {
  78     namespace primitive2d
  79     {
  80         Primitive2DSequence ViewportDependentPrimitive2D::get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
  81         {
  82             ::osl::MutexGuard aGuard( m_aMutex );
  83
  84             // get the current Viewport
  85             const basegfx::B2DRange& rViewport = rViewInformation.getViewport();
  86
  87             if(getLocalDecomposition().hasElements() && !rViewport.equal(getViewport()))
  88             {
  89                 // conditions of last local decomposition have changed, delete
  90                 const_cast< ViewportDependentPrimitive2D* >(this)->setLocalDecomposition(Primitive2DSequence());
  91             }
  92
  93             if(!getLocalDecomposition().hasElements())
  94             {
  95                 // remember new valid DiscreteUnit
  96                 const_cast< ViewportDependentPrimitive2D* >(this)->maViewport = rViewport;
  97             }
  98
  99             // call base implementation
 100             return BasePrimitive2D::get2DDecomposition(rViewInformation);
 101         }
 102     } // end of namespace primitive2d
 103 } // end of namespace drawinglayer
 104
 105 //////////////////////////////////////////////////////////////////////////////
 106 // eof