LCOV - code coverage report
Current view: top level - include/basebmp - compositeiterator.hxx (source / functions) Hit Total Coverage
Test: commit e02a6cb2c3e2b23b203b422e4e0680877f232636 Lines: 0 54 0.0 %
Date: 2014-04-14 Functions: 0 444 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       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             : #ifndef INCLUDED_BASEBMP_COMPOSITEITERATOR_HXX
      21             : #define INCLUDED_BASEBMP_COMPOSITEITERATOR_HXX
      22             : 
      23             : #include <sal/types.h>
      24             : #include <osl/diagnose.h>
      25             : 
      26             : #include <basebmp/nonstandarditerator.hxx>
      27             : #include <vigra/tuple.hxx>
      28             : #include <vigra/iteratortraits.hxx>
      29             : 
      30             : 
      31             : namespace basebmp
      32             : {
      33             : 
      34             : namespace detail
      35             : {
      36             :     template< typename T1, typename T2 > class ArithmeticProxy
      37             :     {
      38             :     public:
      39           0 :         ArithmeticProxy(T1& val1, T2& val2) :
      40             :             mpVal1( &val1 ),
      41           0 :             mpVal2( &val2 )
      42           0 :         {}
      43             : 
      44           0 :         void operator++() { ++(*mpVal1); ++(*mpVal2); }
      45             :         void operator++(int) { (*mpVal1)++; (*mpVal2)++; }
      46             :         void operator--() { --(*mpVal1); --(*mpVal2); }
      47             :         void operator--(int) { (*mpVal1)--; (*mpVal2)--; }
      48           0 :         void operator+=(int d) {*mpVal1+=d; *mpVal2+=d; }
      49             :         void operator-=(int d) {*mpVal1-=d; *mpVal2-=d; }
      50             : 
      51             :         bool operator==(ArithmeticProxy const & rhs) const
      52             :         { return *mpVal1==*rhs.mpVal1 && *mpVal2==*rhs.mpVal2; }
      53             : 
      54             :         bool operator!=(ArithmeticProxy const & rhs) const
      55             :         { return *mpVal1!=*rhs.mpVal1 || *mpVal2!=*rhs.mpVal2; }
      56             : 
      57           0 :         bool operator<(ArithmeticProxy const & rhs) const
      58           0 :         { return *mpVal1<*rhs.mpVal1 && *mpVal2<*rhs.mpVal2; }
      59             : 
      60             :         bool operator<=(ArithmeticProxy const & rhs) const
      61             :         { return *mpVal1<=*rhs.mpVal1 && *mpVal2<=*rhs.mpVal2; }
      62             : 
      63             :         bool operator>(ArithmeticProxy const & rhs) const
      64             :         { return *mpVal1>*rhs.mpVal1 && *mpVal2>*rhs.mpVal2; }
      65             : 
      66             :         bool operator>=(ArithmeticProxy const & rhs) const
      67             :         { return *mpVal1>=*rhs.mpVal1 && *mpVal2>=*rhs.mpVal2; }
      68             : 
      69           0 :         int operator-(ArithmeticProxy const & rhs) const
      70           0 :         { return *mpVal1 - *rhs.mpVal1; }
      71             : 
      72             :     private:
      73             :         T1* mpVal1;
      74             :         T2* mpVal2;
      75             :     };
      76             : 
      77             :     template< typename Iterator1,
      78             :               typename Iterator2,
      79             :               typename ValueType,
      80             :               typename DifferenceType,
      81             :               typename IteratorCategory,
      82             :               class Derived >
      83           0 :     class CompositeIteratorBase : public NonStandardIterator
      84             :     {
      85             :     public:
      86             :         typedef Iterator1        iterator1_type;
      87             :         typedef Iterator2        iterator2_type;
      88             :         typedef ValueType        value_type;
      89             :         typedef DifferenceType   difference_type;
      90             :         typedef IteratorCategory iterator_category;
      91             : 
      92             :     protected:
      93             :         iterator1_type maIter1;
      94             :         iterator2_type maIter2;
      95             : 
      96             :     private:
      97           0 :         bool equal(CompositeIteratorBase const & rhs) const
      98             :         {
      99           0 :             return (maIter1 == rhs.maIter1) && (maIter2 == rhs.maIter2);
     100             :         }
     101             : 
     102             :     public:
     103             :         CompositeIteratorBase() :
     104             :             maIter1(),
     105             :             maIter2()
     106             :         {}
     107             : 
     108           0 :         CompositeIteratorBase( const iterator1_type& rIter1, const iterator2_type& rIter2 ) :
     109             :             maIter1( rIter1 ),
     110           0 :             maIter2( rIter2 )
     111           0 :         {}
     112             : 
     113           0 :         bool operator==(Derived const & rhs) const
     114             :         {
     115           0 :             return equal(rhs);
     116             :         }
     117             : 
     118           0 :         bool operator!=(Derived const & rhs) const
     119             :         {
     120           0 :             return !equal(rhs);
     121             :         }
     122             : 
     123           0 :         difference_type operator-(Derived const & rhs) const
     124             :         {
     125             :             OSL_ASSERT( maIter1 - rhs.maIter1 == maIter2 - rhs.maIter2 );
     126           0 :             return maIter1 - rhs.maIter1;
     127             :         }
     128             : 
     129           0 :         Derived & operator+=(difference_type const & s)
     130             :         {
     131           0 :             maIter1 += s;
     132           0 :             maIter2 += s;
     133           0 :             return static_cast<Derived&>(*this);
     134             :         }
     135             : 
     136             :         Derived & operator-=(difference_type const & s)
     137             :         {
     138             :             maIter1 -= s;
     139             :             maIter2 -= s;
     140             :             return static_cast<Derived&>(*this);
     141             :         }
     142             : 
     143           0 :         Derived operator+(difference_type const & s) const
     144             :         {
     145           0 :             Derived ret(static_cast<Derived const&>(*this));
     146           0 :             ret += s;
     147           0 :             return ret;
     148             :         }
     149             : 
     150             :         Derived operator-(difference_type const & s) const
     151             :         {
     152             :             Derived ret(static_cast<Derived const&>(*this));
     153             :             ret -= s;
     154             :             return ret;
     155             :         }
     156             : 
     157           0 :         Derived& operator++()
     158             :         {
     159           0 :             ++maIter1;
     160           0 :             ++maIter2;
     161           0 :             return static_cast<Derived&>(*this);
     162             :         }
     163             : 
     164             :         Derived& operator--()
     165             :         {
     166             :             --maIter1;
     167             :             --maIter2;
     168             :             return static_cast<Derived&>(*this);
     169             :         }
     170             : 
     171           0 :         Derived operator++(int)
     172             :         {
     173           0 :             Derived ret(static_cast<Derived const&>(*this));
     174           0 :             ++maIter1;
     175           0 :             ++maIter2;
     176           0 :             return ret;
     177             :         }
     178             : 
     179             :         Derived operator--(int)
     180             :         {
     181             :             Derived ret(static_cast<Derived const&>(*this));
     182             :             --maIter1;
     183             :             --maIter2;
     184             :             return ret;
     185             :         }
     186             : 
     187             :         value_type get() const
     188             :         {
     189             :             return value_type(maIter1.get(),
     190             :                               maIter2.get());
     191             :         }
     192             : 
     193             :         value_type get(difference_type const & d) const
     194             :         {
     195             :             return value_type(maIter1.get(d),
     196             :                               maIter2.get(d));
     197             :         }
     198             : 
     199             :         void set( value_type v ) const
     200             :         {
     201             :             maIter1.set(v);
     202             :             maIter2.set(v);
     203             :         }
     204             : 
     205             :         void set( value_type v, difference_type const & d ) const
     206             :         {
     207             :             maIter1.set(v,d);
     208             :             maIter2.set(v,d);
     209             :         }
     210             : 
     211           0 :         const iterator1_type& first() const { return maIter1; }
     212             :         iterator1_type& first() { return maIter1; }
     213             : 
     214           0 :         const iterator2_type& second() const { return maIter2; }
     215             :         iterator2_type& second() { return maIter2; }
     216             :     };
     217             : }
     218             : 
     219             : /** Provide the composition of two 1D image iterators
     220             : 
     221             :     Use this template to compose two iterators into one (e.g. image
     222             :     and mask). Operations are transitive, e.g. operator== only returns
     223             :     true, if both wrapped iterator operator== have yielded true.
     224             : 
     225             :     Note that both iterators must have compatible difference types. To
     226             :     avoid funny effects, iterator ranges given by a CompositeIterator
     227             :     should consist of wrapped iterators of similar range
     228             :  */
     229             : template< typename Iterator1,
     230             :           typename Iterator2,
     231             :           typename ValueType,
     232             :           typename DifferenceType,
     233             :           typename IteratorCategory >
     234           0 : class CompositeIterator1D :
     235             :     public detail::CompositeIteratorBase< Iterator1,
     236             :                                           Iterator2,
     237             :                                           ValueType,
     238             :                                           DifferenceType,
     239             :                                           IteratorCategory,
     240             :                                           CompositeIterator1D<Iterator1,
     241             :                                                               Iterator2,
     242             :                                                               ValueType,
     243             :                                                               DifferenceType,
     244             :                                                               IteratorCategory> >
     245             : {
     246             :     typedef detail::CompositeIteratorBase< Iterator1,
     247             :                                            Iterator2,
     248             :                                            ValueType,
     249             :                                            DifferenceType,
     250             :                                            IteratorCategory,
     251             :                                            CompositeIterator1D<Iterator1,
     252             :                                                                Iterator2,
     253             :                                                                ValueType,
     254             :                                                                DifferenceType,
     255             :                                                                IteratorCategory> > base_type;
     256             : public:
     257             :     CompositeIterator1D() :
     258             :         base_type()
     259             :     {}
     260             : 
     261           0 :     CompositeIterator1D( const Iterator1& rIter1,
     262             :                          const Iterator2& rIter2 ) :
     263           0 :         base_type( rIter1, rIter2 )
     264           0 :     {}
     265             : };
     266             : 
     267             : /** Provide the composition of two 2D image iterators
     268             : 
     269             :     Use this template to compose two iterators into one (e.g. image
     270             :     and mask). Operations are transitive, e.g. operator== only returns
     271             :     true, if both wrapped iterator operator== have yielded true.
     272             : 
     273             :     Note that both iterators must have compatible difference types. To
     274             :     avoid funny effects, iterator ranges given by a CompositeIterator
     275             :     should consist of wrapped iterators of similar range
     276             :  */
     277             : template< typename Iterator1, typename Iterator2 > class CompositeIterator2D :
     278             :     public detail::CompositeIteratorBase< Iterator1,
     279             :                                           Iterator2,
     280             :                                           std::pair<
     281             :                                                 typename vigra::IteratorTraits<Iterator1>::value_type,
     282             :                                                 typename vigra::IteratorTraits<Iterator2>::value_type >,
     283             :                                           typename vigra::IteratorTraits<Iterator1>::difference_type,
     284             :                                           typename vigra::IteratorTraits<Iterator1>::iterator_category,
     285             :                                           CompositeIterator2D<Iterator1, Iterator2> >
     286             : {
     287             :     typedef detail::CompositeIteratorBase< Iterator1,
     288             :                                            Iterator2,
     289             :                                            std::pair<
     290             :                                                 typename vigra::IteratorTraits<Iterator1>::value_type,
     291             :                                                 typename vigra::IteratorTraits<Iterator2>::value_type >,
     292             :                                            typename vigra::IteratorTraits<Iterator1>::difference_type,
     293             :                                            typename vigra::IteratorTraits<Iterator1>::iterator_category,
     294             :                                            CompositeIterator2D<Iterator1, Iterator2> > base_type;
     295             : public:
     296             :     typedef CompositeIterator1D< typename Iterator1::row_iterator,
     297             :                                  typename Iterator2::row_iterator,
     298             :                                  typename base_type::value_type,
     299             :                                  int,
     300             :                                  typename base_type::iterator_category >  row_iterator;
     301             :     typedef CompositeIterator1D< typename Iterator1::column_iterator,
     302             :                                  typename Iterator2::column_iterator,
     303             :                                  typename base_type::value_type,
     304             :                                  int,
     305             :                                  typename base_type::iterator_category >  column_iterator;
     306             : 
     307             :     typedef detail::ArithmeticProxy< typename Iterator1::MoveX,
     308             :                                      typename Iterator2::MoveX >            MoveX;
     309             :     typedef detail::ArithmeticProxy< typename Iterator1::MoveY,
     310             :                                      typename Iterator2::MoveY >            MoveY;
     311             : 
     312             :     MoveX x;
     313             :     MoveY y;
     314             : 
     315             :     CompositeIterator2D() :
     316             :         base_type(),
     317             :         x(this->maIter1.x,this->maIter2.x),
     318             :         y(this->maIter1.y,this->maIter2.y)
     319             :     {}
     320             : 
     321           0 :     CompositeIterator2D( const Iterator1& rIter1, const Iterator2& rIter2 ) :
     322             :         base_type( rIter1, rIter2 ),
     323             :         x(this->maIter1.x,this->maIter2.x),
     324           0 :         y(this->maIter1.y,this->maIter2.y)
     325           0 :     {}
     326             : 
     327           0 :     CompositeIterator2D( const CompositeIterator2D& rOld ) :
     328             :         base_type(rOld),
     329             :         x(this->maIter1.x,this->maIter2.x),
     330           0 :         y(this->maIter1.y,this->maIter2.y)
     331           0 :     {}
     332             : 
     333             :     CompositeIterator2D& operator=( const CompositeIterator2D& rNew )
     334             :     {
     335             :         this->maIter1 = rNew.maIter1;
     336             :         this->maIter2 = rNew.maIter2;
     337             : 
     338             :         x = MoveX(this->maIter1.x,
     339             :                   this->maIter2.x);
     340             :         y = MoveY(this->maIter1.y,
     341             :                   this->maIter2.y);
     342             :     }
     343             : 
     344           0 :     row_iterator rowIterator() const
     345             :     {
     346             :         return row_iterator(this->maIter1.rowIterator(),
     347           0 :                             this->maIter2.rowIterator());
     348             :     }
     349             : 
     350           0 :     column_iterator columnIterator() const
     351             :     {
     352             :         return column_iterator(this->maIter1.columnIterator(),
     353           0 :                                this->maIter2.columnIterator());
     354             :     }
     355             : };
     356             : 
     357             : } // namespace basebmp
     358             : 
     359             : #endif /* INCLUDED_BASEBMP_COMPOSITEITERATOR_HXX */
     360             : 
     361             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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