lyx_mirror/src/paragraph_pimpl.h

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// -*- C++ -*-
/**
* \file paragraph_pimpl.h
* Copyright 1995-2002 the LyX Team
* Read the file COPYING
*/
#ifndef PARAGRAPH_PIMPL_H
#define PARAGRAPH_PIMPL_H
#include "paragraph.h"
#include "ParagraphParameters.h"
#include "changes.h"
#include "counters.h"
#include <boost/scoped_ptr.hpp>
class LyXLayout;
struct Paragraph::Pimpl {
///
typedef std::vector<value_type> TextContainer;
///
Pimpl(Paragraph * owner);
/// Copy constructor
Pimpl(Pimpl const &, Paragraph * owner, bool same_ids = false);
///
lyx::pos_type size() const {
return text.size();
}
///
bool empty() const {
return text.empty();
}
///
void clear();
///
void setContentsFromPar(Paragraph const * par);
/// set tracking mode
void trackChanges(Change::Type type = Change::UNCHANGED);
/// stop tracking
void untrackChanges();
/// set all text as new for change mode
void cleanChanges();
/// look up change type at given pos
Change::Type lookupChange(lyx::pos_type pos) const;
/// look up change at given pos
Change const lookupChangeFull(lyx::pos_type pos) const;
/// is there a change in the given range ?
bool isChanged(lyx::pos_type start, lyx::pos_type end) const;
/// is there a non-addition in this range ?
bool isChangeEdited(lyx::pos_type start, lyx::pos_type end) const;
/// set change at pos
void setChange(lyx::pos_type pos, Change::Type type);
/// mark as erased
void markErased();
/// accept change
void acceptChange(lyx::pos_type start, lyx::pos_type end);
/// reject change
void rejectChange(lyx::pos_type start, lyx::pos_type end);
/// are we tracking changes ?
bool tracking() const {
return changes_.get();
}
///
value_type getChar(lyx::pos_type pos) const;
///
void setChar(lyx::pos_type pos, value_type c);
///
void insertChar(lyx::pos_type pos, value_type c, LyXFont const & font, Change change = Change(Change::INSERTED));
///
void insertInset(lyx::pos_type pos, Inset * inset, LyXFont const & font, Change change = Change(Change::INSERTED));
/// definite erase
void eraseIntern(lyx::pos_type pos);
/// erase the given position
void erase(lyx::pos_type pos);
/// erase the given range
bool erase(lyx::pos_type start, lyx::pos_type end);
///
LyXFont const realizeFont(LyXFont const & font,
BufferParams const & bparams) const;
///
Inset * inset_owner;
/** A font entry covers a range of positions. Notice that the
entries in the list are inserted in random order.
I don't think it's worth the effort to implement a more effective
datastructure, because the number of different fonts in a paragraph
is limited. (Asger)
Nevertheless, I decided to store fontlist using a sorted vector:
fontlist = { {pos_1,font_1} , {pos_2,font_2} , ... } where
pos_1 < pos_2 < ..., font_{i-1} != font_i for all i,
and font_i covers the chars in positions pos_{i-1}+1,...,pos_i
(font_1 covers the chars 0,...,pos_1) (Dekel)
*/
struct FontTable {
///
FontTable(lyx::pos_type p, LyXFont const & f)
: pos_(p)
{
font_ = container.get(f);
}
///
lyx::pos_type pos() const { return pos_; }
///
void pos(lyx::pos_type p) { pos_ = p; }
///
LyXFont const & font() const { return *font_; }
///
void font(LyXFont const & f) { font_ = container.get(f);}
private:
/// End position of paragraph this font attribute covers
lyx::pos_type pos_;
/** Font. Interpretation of the font values:
If a value is LyXFont::INHERIT_*, it means that the font
attribute is inherited from either the layout of this
paragraph or, in the case of nested paragraphs, from the
layout in the environment one level up until completely
resolved.
The values LyXFont::IGNORE_* and LyXFont::TOGGLE are NOT
allowed in these font tables.
*/
boost::shared_ptr<LyXFont> font_;
///
static ShareContainer<LyXFont> container;
};
///
friend struct matchFT;
///
struct matchFT {
/// used by lower_bound and upper_bound
inline
int operator()(FontTable const & a, FontTable const & b) const {
return a.pos() < b.pos();
}
};
///
typedef std::vector<FontTable> FontList;
///
FontList fontlist;
///
void simpleTeXBlanks(std::ostream &, TexRow & texrow,
lyx::pos_type const i,
unsigned int & column,
LyXFont const & font,
LyXLayout const & style);
///
void simpleTeXSpecialChars(Buffer const *, BufferParams const &,
std::ostream &, TexRow & texrow,
bool moving_arg,
LyXFont & font, LyXFont & running_font,
LyXFont & basefont, bool & open_font,
Change::Type & running_change,
LyXLayout const & style,
lyx::pos_type & i,
unsigned int & column, value_type const c);
///
void validate(LaTeXFeatures & features,
LyXLayout const & layout) const;
///
unsigned int id_;
///
static unsigned int paragraph_id;
///
ParagraphParameters params;
private:
/// erase at the given position. Returns true if it was actually erased
bool erasePos(lyx::pos_type pos);
/// match a string against a particular point in the paragraph
bool isTextAt(string const & str, lyx::pos_type pos) const;
/// for recording and looking up changes in revision tracking mode
boost::scoped_ptr<Changes> changes_;
/// Who owns us?
Paragraph * owner_;
///
TextContainer text;
};
#endif