drawinglayer/source/primitive2d/primitivetools2d.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <drawinglayer/primitive2d/primitivetools2d.hxx>
  21 #include <basegfx/vector/b2dvector.hxx>
  22 #include <drawinglayer/geometry/viewinformation2d.hxx>
  23
  24
  25 namespace drawinglayer
  26 {
  27     namespace primitive2d
  28     {
  29         void DiscreteMetricDependentPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const
  30         {
  31             ::osl::MutexGuard aGuard( m_aMutex );
  32
  33             // get the current DiscreteUnit, look at X and Y and use the maximum
  34             const basegfx::B2DVector aDiscreteVector(rViewInformation.getInverseObjectToViewTransformation() * basegfx::B2DVector(1.0, 1.0));
  35             const double fDiscreteUnit(std::min(fabs(aDiscreteVector.getX()), fabs(aDiscreteVector.getY())));
  36
  37             if(!getBuffered2DDecomposition().empty() && !basegfx::fTools::equal(fDiscreteUnit, getDiscreteUnit()))
  38             {
  39                 // conditions of last local decomposition have changed, delete
  40                 const_cast< DiscreteMetricDependentPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
  41             }
  42
  43             if(getBuffered2DDecomposition().empty())
  44             {
  45                 // remember new valid DiscreteUnit
  46                 const_cast< DiscreteMetricDependentPrimitive2D* >(this)->mfDiscreteUnit = fDiscreteUnit;
  47             }
  48
  49             // call base implementation
  50             BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);
  51         }
  52     } // end of namespace primitive2d
  53 } // end of namespace drawinglayer
  54
  55
  56 namespace drawinglayer
  57 {
  58     namespace primitive2d
  59     {
  60         void ViewportDependentPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const
  61         {
  62             ::osl::MutexGuard aGuard( m_aMutex );
  63
  64             // get the current Viewport
  65             const basegfx::B2DRange& rViewport = rViewInformation.getViewport();
  66
  67             if(!getBuffered2DDecomposition().empty() && !rViewport.equal(getViewport()))
  68             {
  69                 // conditions of last local decomposition have changed, delete
  70                 const_cast< ViewportDependentPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
  71             }
  72
  73             if(getBuffered2DDecomposition().empty())
  74             {
  75                 // remember new valid DiscreteUnit
  76                 const_cast< ViewportDependentPrimitive2D* >(this)->maViewport = rViewport;
  77             }
  78
  79             // call base implementation
  80             BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);
  81         }
  82     } // end of namespace primitive2d
  83 } // end of namespace drawinglayer
  84
  85
  86 namespace drawinglayer
  87 {
  88     namespace primitive2d
  89     {
  90         void ViewTransformationDependentPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const
  91         {
  92             ::osl::MutexGuard aGuard( m_aMutex );
  93
  94             // get the current ViewTransformation
  95             const basegfx::B2DHomMatrix& rViewTransformation = rViewInformation.getViewTransformation();
  96
  97             if(!getBuffered2DDecomposition().empty() && rViewTransformation != getViewTransformation())
  98             {
  99                 // conditions of last local decomposition have changed, delete
 100                 const_cast< ViewTransformationDependentPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
 101             }
 102
 103             if(getBuffered2DDecomposition().empty())
 104             {
 105                 // remember new valid ViewTransformation
 106                 const_cast< ViewTransformationDependentPrimitive2D* >(this)->maViewTransformation = rViewTransformation;
 107             }
 108
 109             // call base implementation
 110             BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);
 111         }
 112     } // end of namespace primitive2d
 113 } // end of namespace drawinglayer
 114
 115
 116 namespace drawinglayer
 117 {
 118     namespace primitive2d
 119     {
 120         void ObjectAndViewTransformationDependentPrimitive2D::get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const
 121         {
 122             ::osl::MutexGuard aGuard( m_aMutex );
 123
 124             // get the current ViewTransformation
 125             const basegfx::B2DHomMatrix& rViewTransformation = rViewInformation.getViewTransformation();
 126
 127             if(!getBuffered2DDecomposition().empty() && rViewTransformation != getViewTransformation())
 128             {
 129                 // conditions of last local decomposition have changed, delete
 130                 const_cast< ObjectAndViewTransformationDependentPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
 131             }
 132
 133             // get the current ObjectTransformation
 134             const basegfx::B2DHomMatrix& rObjectTransformation = rViewInformation.getObjectTransformation();
 135
 136             if(!getBuffered2DDecomposition().empty() && rObjectTransformation != getObjectTransformation())
 137             {
 138                 // conditions of last local decomposition have changed, delete
 139                 const_cast< ObjectAndViewTransformationDependentPrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
 140             }
 141
 142             if(getBuffered2DDecomposition().empty())
 143             {
 144                 // remember new valid ViewTransformation, and ObjectTransformation
 145                 const_cast< ObjectAndViewTransformationDependentPrimitive2D* >(this)->maViewTransformation = rViewTransformation;
 146                 const_cast< ObjectAndViewTransformationDependentPrimitive2D* >(this)->maObjectTransformation = rObjectTransformation;
 147             }
 148
 149             // call base implementation
 150             BufferedDecompositionPrimitive2D::get2DDecomposition(rVisitor, rViewInformation);
 151         }
 152     } // end of namespace primitive2d
 153 } // end of namespace drawinglayer
 154
 155 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */