lyx_mirror/src/FontIterator.h

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// -*- C++ -*-
/**
* \file src/FontIterator.h
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Alfredo Braunstein
*
* Full author contact details are available in file CREDITS.
*
*
* Calling LyXText::getFont is slow. While rebreaking we scan a
* paragraph from left to right calling getFont for every char. This
* simple class address this problem by hidding an optimization trick
* (not mine btw -AB): the font is reused in the whole font span. The
* class handles transparently the "hidden" (not part of the fontlist)
* label font (as getFont does).
*/
#ifndef FONTITERATOR_H
#define FONTITERATOR_H
#include "lyxfont.h"
#include "ParagraphList_fwd.h"
#include "support/types.h"
class LyXText;
class FontIterator : std::iterator<std::forward_iterator_tag, LyXFont>
{
public:
FontIterator(LyXText const & text, ParagraphList::iterator pit,
lyx::pos_type pos);
LyXFont operator*() const;
FontIterator & operator++();
LyXFont * operator->();
private:
LyXText const & text_;
ParagraphList::iterator pit_;
lyx::pos_type pos_;
LyXFont font_;
lyx::pos_type endspan_;
lyx::pos_type bodypos_;
};
#endif //FONTITERATOR_H