lyx_mirror/src/mathed/MathData.h

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// -*- C++ -*-
/**
* \file MathData.h
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Alejandro Aguilar Sierra
* \author André Pönitz
* \author Lars Gullik Bjønnes
* \author Stefan Schimanski
*
* Full author contact details are available in file CREDITS.
*/
#ifndef MATH_DATA_H
#define MATH_DATA_H
#include "Dimension.h"
#include "MathAtom.h"
#include "OutputEnums.h"
#include "support/strfwd.h"
#include <vector>
namespace lyx {
class Buffer;
class BufferView;
class Cursor;
class DocIterator;
class LaTeXFeatures;
class ReplaceData;
class MacroContext;
class MathMacro;
class MetricsInfo;
class PainterInfo;
class ParIterator;
class TextMetricsInfo;
class TextPainter;
class MathData : private std::vector<MathAtom> {
public:
/// re-use inhertited stuff
typedef std::vector<MathAtom> base_type;
using base_type::const_iterator;
using base_type::iterator;
using base_type::size_type;
using base_type::difference_type;
using base_type::size;
using base_type::empty;
using base_type::clear;
using base_type::begin;
using base_type::end;
using base_type::push_back;
using base_type::pop_back;
using base_type::back;
using base_type::front;
///
typedef size_type idx_type;
typedef size_type pos_type;
public:
///
MathData(Buffer * buf = 0) : buffer_(buf) {}
///
MathData(Buffer * buf, const_iterator from, const_iterator to);
///
Buffer * buffer() { return buffer_; }
///
Buffer const * buffer() const { return buffer_; }
///
void append(MathData const & ar);
/// inserts single atom at position pos
void insert(size_type pos, MathAtom const & at);
/// inserts multiple atoms at position pos
void insert(size_type pos, MathData const & ar);
/// erase range from pos1 to pos2
void erase(iterator pos1, iterator pos2);
/// erase single atom
void erase(iterator pos);
/// erase range from pos1 to pos2
void erase(size_type pos1, size_type pos2);
/// erase single atom
void erase(size_type pos);
///
void dump() const;
///
void dump2() const;
///
void replace(ReplaceData &);
///
void substitute(MathData const & m);
/// looks for exact match
bool match(MathData const & ar) const;
/// looks for inclusion match starting at pos
bool matchpart(MathData const & ar, pos_type pos) const;
/// looks for containment, return == size mean not found
size_type find(MathData const & ar) const;
/// looks for containment, return == size mean not found
size_type find_last(MathData const & ar) const;
///
bool contains(MathData const & ar) const;
///
void validate(LaTeXFeatures &) const;
/// checked write access
MathAtom & operator[](pos_type);
/// checked read access
MathAtom const & operator[](pos_type) const;
/// rebuild cached metrics information
void metrics(MetricsInfo & mi, Dimension & dim) const;
///
Dimension const & dimension(BufferView const &) const;
/// redraw cell using cache metrics information
void draw(PainterInfo & pi, int x, int y) const;
/// rebuild cached metrics information
void metricsT(TextMetricsInfo const & mi, Dimension & dim) const;
/// redraw cell using cache metrics information
void drawT(TextPainter & pi, int x, int y) const;
/// mark cell for re-drawing
void touch() const;
/// access to cached x coordinate of last drawing
int xo(BufferView const & bv) const;
/// access to cached y coordinate of last drawing
int yo(BufferView const & bv) const;
/// access to cached x coordinate of mid point of last drawing
int xm(BufferView const & bv) const;
/// access to cached y coordinate of mid point of last drawing
int ym(BufferView const & bv) const;
/// write access to coordinate;
void setXY(BufferView & bv, int x, int y) const;
/// returns x coordinate of given position in the array
int pos2x(BufferView const * bv, size_type pos) const;
/// returns position of given x coordinate
int pos2x(BufferView const * bv, size_type pos, int glue) const;
/// returns position of given x coordinate
size_type x2pos(BufferView const * bv, int pos) const;
/// returns position of given x coordinate fstarting from a certain pos
size_type x2pos(BufferView const * bv, int targetx, int glue) const;
/// returns distance of this cell to the point given by x and y
// assumes valid position and size cache
int dist(BufferView const & bv, int x, int y) const;
/// minimum ascent offset for superscript
int minasc() const { return minasc_; }
/// minimum descent offset for subscript
int mindes() const { return mindes_; }
/// level above/below which super/subscript should extend
int slevel() const { return slevel_; }
/// additional super/subscript shift
int sshift() const { return sshift_; }
/// superscript kerning
int kerning(BufferView const *) const { return kerning_; }
///
void swap(MathData & ar) { base_type::swap(ar); }
/// attach/detach arguments to macros, updating the cur to
/// stay visually at the same position (cur==0 is allowed)
void updateMacros(Cursor * cur, MacroContext const & mc);
///
void updateBuffer(ParIterator const &, UpdateType);
protected:
/// cached values for super/subscript placement
mutable int minasc_;
mutable int mindes_;
mutable int slevel_;
mutable int sshift_;
mutable int kerning_;
Buffer * buffer_;
private:
/// is this an exact match at this position?
bool find1(MathData const & ar, size_type pos) const;
///
void detachMacroParameters(DocIterator * dit, const size_type macroPos);
///
void attachMacroParameters(Cursor * cur, const size_type macroPos,
const size_type macroNumArgs, const int macroOptionals,
const bool fromInitToNormalMode, const bool interactiveInit,
const size_t appetite);
///
void collectOptionalParameters(Cursor * cur,
const size_type numOptionalParams, std::vector<MathData> & params,
size_t & pos, MathAtom & scriptToPutAround,
const pos_type macroPos, const int thisPos, const int thisSlice);
///
void collectParameters(Cursor * cur,
const size_type numParams, std::vector<MathData> & params,
size_t & pos, MathAtom & scriptToPutAround,
const pos_type macroPos, const int thisPos, const int thisSlice,
const size_t appetite);
};
///
std::ostream & operator<<(std::ostream & os, MathData const & ar);
///
odocstream & operator<<(odocstream & os, MathData const & ar);
} // namespace lyx
#endif