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Diffstat (limited to 'basebmp/inc/basebmp/compositeiterator.hxx')
| -rwxr-xr-x | basebmp/inc/basebmp/compositeiterator.hxx | 367 |
1 files changed, 367 insertions, 0 deletions
diff --git a/basebmp/inc/basebmp/compositeiterator.hxx b/basebmp/inc/basebmp/compositeiterator.hxx new file mode 100755 index 000000000000..70f2acebb043 --- /dev/null +++ b/basebmp/inc/basebmp/compositeiterator.hxx @@ -0,0 +1,367 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#ifndef INCLUDED_BASEBMP_COMPOSITEITERATOR_HXX +#define INCLUDED_BASEBMP_COMPOSITEITERATOR_HXX + +#include <sal/types.h> +#include <osl/diagnose.h> + +#include <basebmp/nonstandarditerator.hxx> +#include <vigra/tuple.hxx> +#include <vigra/iteratortraits.hxx> + + +namespace basebmp +{ + +namespace detail +{ + template< typename T1, typename T2 > class ArithmeticProxy + { + public: + ArithmeticProxy(T1& val1, T2& val2) : + mpVal1( &val1 ), + mpVal2( &val2 ) + {} + + void operator++() { ++(*mpVal1); ++(*mpVal2); } + void operator++(int) { (*mpVal1)++; (*mpVal2)++; } + void operator--() { --(*mpVal1); --(*mpVal2); } + void operator--(int) { (*mpVal1)--; (*mpVal2)--; } + void operator+=(int d) {*mpVal1+=d; *mpVal2+=d; } + void operator-=(int d) {*mpVal1-=d; *mpVal2-=d; } + + bool operator==(ArithmeticProxy const & rhs) const + { return *mpVal1==*rhs.mpVal1 && *mpVal2==*rhs.mpVal2; } + + bool operator!=(ArithmeticProxy const & rhs) const + { return *mpVal1!=*rhs.mpVal1 || *mpVal2!=*rhs.mpVal2; } + + bool operator<(ArithmeticProxy const & rhs) const + { return *mpVal1<*rhs.mpVal1 && *mpVal2<*rhs.mpVal2; } + + bool operator<=(ArithmeticProxy const & rhs) const + { return *mpVal1<=*rhs.mpVal1 && *mpVal2<=*rhs.mpVal2; } + + bool operator>(ArithmeticProxy const & rhs) const + { return *mpVal1>*rhs.mpVal1 && *mpVal2>*rhs.mpVal2; } + + bool operator>=(ArithmeticProxy const & rhs) const + { return *mpVal1>=*rhs.mpVal1 && *mpVal2>=*rhs.mpVal2; } + + int operator-(ArithmeticProxy const & rhs) const + { return *mpVal1 - *rhs.mpVal1; } + + private: + T1* mpVal1; + T2* mpVal2; + }; + + template< typename Iterator1, + typename Iterator2, + typename ValueType, + typename DifferenceType, + typename IteratorCategory, + class Derived > + class CompositeIteratorBase : public NonStandardIterator + { + public: + typedef Iterator1 iterator1_type; + typedef Iterator2 iterator2_type; + typedef ValueType value_type; + typedef DifferenceType difference_type; + typedef IteratorCategory iterator_category; + + protected: + iterator1_type maIter1; + iterator2_type maIter2; + + private: + bool equal(CompositeIteratorBase const & rhs) const + { + return (maIter1 == rhs.maIter1) && (maIter2 == rhs.maIter2); + } + + public: + CompositeIteratorBase() : + maIter1(), + maIter2() + {} + + CompositeIteratorBase( const iterator1_type& rIter1, const iterator2_type& rIter2 ) : + maIter1( rIter1 ), + maIter2( rIter2 ) + {} + + bool operator==(Derived const & rhs) const + { + return equal(rhs); + } + + bool operator!=(Derived const & rhs) const + { + return !equal(rhs); + } + + difference_type operator-(Derived const & rhs) const + { + OSL_ASSERT( maIter1 - rhs.maIter1 == maIter2 - rhs.maIter2 ); + return maIter1 - rhs.maIter1; + } + + Derived & operator+=(difference_type const & s) + { + maIter1 += s; + maIter2 += s; + return static_cast<Derived&>(*this); + } + + Derived & operator-=(difference_type const & s) + { + maIter1 -= s; + maIter2 -= s; + return static_cast<Derived&>(*this); + } + + Derived operator+(difference_type const & s) const + { + Derived ret(static_cast<Derived const&>(*this)); + ret += s; + return ret; + } + + Derived operator-(difference_type const & s) const + { + Derived ret(static_cast<Derived const&>(*this)); + ret -= s; + return ret; + } + + Derived& operator++() + { + ++maIter1; + ++maIter2; + return static_cast<Derived&>(*this); + } + + Derived& operator--() + { + --maIter1; + --maIter2; + return static_cast<Derived&>(*this); + } + + Derived operator++(int) + { + Derived ret(static_cast<Derived const&>(*this)); + ++maIter1; + ++maIter2; + return ret; + } + + Derived operator--(int) + { + Derived ret(static_cast<Derived const&>(*this)); + --maIter1; + --maIter2; + return ret; + } + + value_type get() const + { + return value_type(maIter1.get(), + maIter2.get()); + } + + value_type get(difference_type const & d) const + { + return value_type(maIter1.get(d), + maIter2.get(d)); + } + + void set( value_type v ) const + { + maIter1.set(v); + maIter2.set(v); + } + + void set( value_type v, difference_type const & d ) const + { + maIter1.set(v,d); + maIter2.set(v,d); + } + + const iterator1_type& first() const { return maIter1; } + iterator1_type& first() { return maIter1; } + + const iterator2_type& second() const { return maIter2; } + iterator2_type& second() { return maIter2; } + }; +} + +/** Provide the composition of two 1D image iterators + + Use this template to compose two iterators into one (e.g. image + and mask). Operations are transitive, e.g. operator== only returns + true, if both wrapped iterator operator== have yielded true. + + Note that both iterators must have compatible difference types. To + avoid funny effects, iterator ranges given by a CompositeIterator + should consist of wrapped iterators of similar range + */ +template< typename Iterator1, + typename Iterator2, + typename ValueType, + typename DifferenceType, + typename IteratorCategory > +class CompositeIterator1D : + public detail::CompositeIteratorBase< Iterator1, + Iterator2, + ValueType, + DifferenceType, + IteratorCategory, + CompositeIterator1D<Iterator1, + Iterator2, + ValueType, + DifferenceType, + IteratorCategory> > +{ + typedef detail::CompositeIteratorBase< Iterator1, + Iterator2, + ValueType, + DifferenceType, + IteratorCategory, + CompositeIterator1D<Iterator1, + Iterator2, + ValueType, + DifferenceType, + IteratorCategory> > base_type; +public: + CompositeIterator1D() : + base_type() + {} + + CompositeIterator1D( const Iterator1& rIter1, + const Iterator2& rIter2 ) : + base_type( rIter1, rIter2 ) + {} +}; + +/** Provide the composition of two 2D image iterators + + Use this template to compose two iterators into one (e.g. image + and mask). Operations are transitive, e.g. operator== only returns + true, if both wrapped iterator operator== have yielded true. + + Note that both iterators must have compatible difference types. To + avoid funny effects, iterator ranges given by a CompositeIterator + should consist of wrapped iterators of similar range + */ +template< typename Iterator1, typename Iterator2 > class CompositeIterator2D : + public detail::CompositeIteratorBase< Iterator1, + Iterator2, + std::pair< + typename vigra::IteratorTraits<Iterator1>::value_type, + typename vigra::IteratorTraits<Iterator2>::value_type >, + typename vigra::IteratorTraits<Iterator1>::difference_type, + typename vigra::IteratorTraits<Iterator1>::iterator_category, + CompositeIterator2D<Iterator1, Iterator2> > +{ + typedef detail::CompositeIteratorBase< Iterator1, + Iterator2, + std::pair< + typename vigra::IteratorTraits<Iterator1>::value_type, + typename vigra::IteratorTraits<Iterator2>::value_type >, + typename vigra::IteratorTraits<Iterator1>::difference_type, + typename vigra::IteratorTraits<Iterator1>::iterator_category, + CompositeIterator2D<Iterator1, Iterator2> > base_type; +public: + typedef CompositeIterator1D< typename Iterator1::row_iterator, + typename Iterator2::row_iterator, + typename base_type::value_type, + int, + typename base_type::iterator_category > row_iterator; + typedef CompositeIterator1D< typename Iterator1::column_iterator, + typename Iterator2::column_iterator, + typename base_type::value_type, + int, + typename base_type::iterator_category > column_iterator; + + typedef detail::ArithmeticProxy< typename Iterator1::MoveX, + typename Iterator2::MoveX > MoveX; + typedef detail::ArithmeticProxy< typename Iterator1::MoveY, + typename Iterator2::MoveY > MoveY; + + MoveX x; + MoveY y; + + CompositeIterator2D() : + base_type(), + x(this->maIter1.x,this->maIter2.x), + y(this->maIter1.y,this->maIter2.y) + {} + + CompositeIterator2D( const Iterator1& rIter1, const Iterator2& rIter2 ) : + base_type( rIter1, rIter2 ), + x(this->maIter1.x,this->maIter2.x), + y(this->maIter1.y,this->maIter2.y) + {} + + CompositeIterator2D( const CompositeIterator2D& rOld ) : + base_type(rOld), + x(this->maIter1.x,this->maIter2.x), + y(this->maIter1.y,this->maIter2.y) + {} + + CompositeIterator2D& operator=( const CompositeIterator2D& rNew ) + { + this->maIter1 = rNew.maIter1; + this->maIter2 = rNew.maIter2; + + x = MoveX(this->maIter1.x, + this->maIter2.x); + y = MoveY(this->maIter1.y, + this->maIter2.y); + } + + row_iterator rowIterator() const + { + return row_iterator(this->maIter1.rowIterator(), + this->maIter2.rowIterator()); + } + + column_iterator columnIterator() const + { + return column_iterator(this->maIter1.columnIterator(), + this->maIter2.columnIterator()); + } +}; + +} // namespace basebmp + +#endif /* INCLUDED_BASEBMP_COMPOSITEITERATOR_HXX */ |