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-rw-r--r--basebmp/inc/basebmp/stridedarrayiterator.hxx117
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diff --git a/basebmp/inc/basebmp/stridedarrayiterator.hxx b/basebmp/inc/basebmp/stridedarrayiterator.hxx
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--- a/basebmp/inc/basebmp/stridedarrayiterator.hxx
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-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/*************************************************************************
- *
- * 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_STRIDEDARRAYITERATOR_HXX
-#define INCLUDED_BASEBMP_STRIDEDARRAYITERATOR_HXX
-
-#include <basebmp/metafunctions.hxx>
-
-namespace basebmp
-{
-
-/** Like vigra::StridedArrayIterator
-
- Changed semantics re. DirectionSelector<StridedArrayTag>: stride
- now counts in <em>raw</em> bytes
-
- Adapts given ptr, in a way that iterator increments move forward
- in strided steps. Stride can, by the way, also be negative
- */
-template< typename T > class StridedArrayIterator
-{
-public:
- typedef typename clone_const<T, unsigned char>::type internal_type;
-
- /** Create iterator
-
- @param stride
-
- Stride in bytes. Given value should better match memory layout
- of T, as memory gets reinterpret-casted.
- */
- explicit StridedArrayIterator(int stride, T* ptr = 0) :
- stride_(stride),
- current_(reinterpret_cast<internal_type*>(ptr))
- {}
-
- /** Copy from other StridedArrayIterator, plus given offset
-
- @param offset
- Offset in bytes
- */
- StridedArrayIterator( StridedArrayIterator const& rSrc,
- int offset ) :
- stride_(rSrc.stride_),
- current_(reinterpret_cast<internal_type*>(
- reinterpret_cast<T*>(rSrc.current_)+offset))
- {}
-
- void operator++() {current_ += stride_; }
- void operator++(int) {current_ += stride_; }
- void operator--() {current_ -= stride_; }
- void operator--(int) {current_ -= stride_; }
- void operator+=(int dy) {current_ += dy*stride_; }
- void operator-=(int dy) {current_ -= dy*stride_; }
-
- int operator-(StridedArrayIterator const & rhs) const
- { return (current_ - rhs.current_) / stride_; }
-
- bool operator==(StridedArrayIterator const & rhs) const
- { return current_ == rhs.current_; }
-
- bool operator!=(StridedArrayIterator const & rhs) const
- { return current_ != rhs.current_; }
-
- bool operator<(StridedArrayIterator const & rhs) const
- { return *this - rhs < 0; }
-
- bool operator<=(StridedArrayIterator const & rhs) const
- { return *this - rhs <= 0; }
-
- bool operator>(StridedArrayIterator const & rhs) const
- { return *this - rhs > 0; }
-
- bool operator>=(StridedArrayIterator const & rhs) const
- { return *this - rhs >= 0; }
-
- T* operator()() const
- { return reinterpret_cast<T*>(current_); }
-
- T* operator()(int d) const
- { return reinterpret_cast<T*>(current_ + d*stride_); }
-
-private:
- int stride_;
- internal_type* current_;
-};
-
-} // namespace basebmp
-
-#endif /* INCLUDED_BASEBMP_STRIDEDARRAYITERATOR_HXX */
-
-/* vim:set shiftwidth=4 softtabstop=4 expandtab: */