src/mathed/MathData.h

   1 // -*- C++ -*-
   2 /**
   3  * \file MathData.h
   4  * This file is part of LyX, the document processor.
   5  * Licence details can be found in the file COPYING.
   6  *
   7  * \author Alejandro Aguilar Sierra
   8  * \author André Pönitz
   9  * \author Lars Gullik Bjønnes
  10  * \author Stefan Schimanski
  11  *
  12  * Full author contact details are available in file CREDITS.
  13  */
  14
  15 #ifndef MATH_DATA_H
  16 #define MATH_DATA_H
  17
  18 #include "Dimension.h"
  19 #include "MathAtom.h"
  20
  21 #include "support/strfwd.h"
  22
  23 #include <vector>
  24
  25
  26 namespace lyx {
  27
  28 class Buffer;
  29 class BufferView;
  30 class Cursor;
  31 class DocIterator;
  32 class LaTeXFeatures;
  33 class ReplaceData;
  34 class MacroContext;
  35 class MathMacro;
  36 class MetricsInfo;
  37 class PainterInfo;
  38 class TextMetricsInfo;
  39 class TextPainter;
  40
  41
  42 class MathData : private std::vector<MathAtom> {
  43 public:
  44         /// re-use inhertited stuff
  45         typedef std::vector<MathAtom> base_type;
  46         using base_type::const_iterator;
  47         using base_type::iterator;
  48         using base_type::size_type;
  49         using base_type::difference_type;
  50         using base_type::size;
  51         using base_type::empty;
  52         using base_type::clear;
  53         using base_type::begin;
  54         using base_type::end;
  55         using base_type::push_back;
  56         using base_type::pop_back;
  57         using base_type::back;
  58         using base_type::front;
  59         ///
  60         typedef size_type idx_type;
  61         typedef size_type pos_type;
  62
  63 public:
  64         ///
  65         MathData(Buffer * buf = 0) : buffer_(buf) {}
  66         ///
  67         MathData(Buffer * buf, const_iterator from, const_iterator to);
  68         ///
  69         Buffer * buffer() { return buffer_; }
  70         ///
  71         Buffer const * buffer() const { return buffer_; }
  72         ///
  73         void append(MathData const & ar);
  74
  75         /// inserts single atom at position pos
  76         void insert(size_type pos, MathAtom const & at);
  77         /// inserts multiple atoms at position pos
  78         void insert(size_type pos, MathData const & ar);
  79
  80         /// erase range from pos1 to pos2
  81         void erase(iterator pos1, iterator pos2);
  82         /// erase single atom
  83         void erase(iterator pos);
  84         /// erase range from pos1 to pos2
  85         void erase(size_type pos1, size_type pos2);
  86         /// erase single atom
  87         void erase(size_type pos);
  88
  89         ///
  90         void dump() const;
  91         ///
  92         void dump2() const;
  93         ///
  94         void replace(ReplaceData &);
  95         ///
  96         void substitute(MathData const & m);
  97
  98         /// looks for exact match
  99         bool match(MathData const & ar) const;
 100         /// looks for inclusion match starting at pos
 101         bool matchpart(MathData const & ar, pos_type pos) const;
 102         /// looks for containment, return == size mean not found
 103         size_type find(MathData const & ar) const;
 104         /// looks for containment, return == size mean not found
 105         size_type find_last(MathData const & ar) const;
 106         ///
 107         bool contains(MathData const & ar) const;
 108         ///
 109         void validate(LaTeXFeatures &) const;
 110
 111         /// checked write access
 112         MathAtom & operator[](pos_type);
 113         /// checked read access
 114         MathAtom const & operator[](pos_type) const;
 115         /// rebuild cached metrics information
 116         void metrics(MetricsInfo & mi, Dimension & dim) const;
 117         ///
 118         Dimension const & dimension(BufferView const &) const;
 119
 120         /// redraw cell using cache metrics information
 121         void draw(PainterInfo & pi, int x, int y) const;
 122         /// rebuild cached metrics information
 123         void metricsT(TextMetricsInfo const & mi, Dimension & dim) const;
 124         /// redraw cell using cache metrics information
 125         void drawT(TextPainter & pi, int x, int y) const;
 126         /// mark cell for re-drawing
 127         void touch() const;
 128
 129         /// access to cached x coordinate of last drawing
 130         int xo(BufferView const & bv) const;
 131         /// access to cached y coordinate of last drawing
 132         int yo(BufferView const & bv) const;
 133         /// access to cached x coordinate of mid point of last drawing
 134         int xm(BufferView const & bv) const;
 135         /// access to cached y coordinate of mid point of last drawing
 136         int ym(BufferView const & bv) const;
 137         /// write access to coordinate;
 138         void setXY(BufferView & bv, int x, int y) const;
 139         /// returns x coordinate of given position in the array
 140         int pos2x(BufferView const * bv, size_type pos) const;
 141         /// returns position of given x coordinate
 142         int pos2x(BufferView const * bv, size_type pos, int glue) const;
 143         /// returns position of given x coordinate
 144         size_type x2pos(BufferView const * bv, int pos) const;
 145         /// returns position of given x coordinate fstarting from a certain pos
 146         size_type x2pos(BufferView const * bv, int targetx, int glue) const;
 147         /// returns distance of this cell to the point given by x and y
 148         // assumes valid position and size cache
 149         int dist(BufferView const & bv, int x, int y) const;
 150
 151         /// minimum ascent offset for superscript
 152         int minasc() const { return minasc_; }
 153         /// minimum descent offset for subscript
 154         int mindes() const { return mindes_; }
 155         /// level above/below which super/subscript should extend
 156         int slevel() const { return slevel_; }
 157         /// additional super/subscript shift
 158         int sshift() const { return sshift_; }
 159         /// superscript kerning
 160         int kerning(BufferView const *) const { return kerning_; }
 161         ///
 162         void swap(MathData & ar) { base_type::swap(ar); }
 163
 164         /// attach/detach arguments to macros, updating the cur to
 165         /// stay visually at the same position (cur==0 is allowed)
 166         void updateMacros(Cursor * cur, MacroContext const & mc);
 167
 168 protected:
 169         /// cached values for super/subscript placement
 170         mutable int minasc_;
 171         mutable int mindes_;
 172         mutable int slevel_;
 173         mutable int sshift_;
 174         mutable int kerning_;
 175         Buffer * buffer_;
 176
 177 private:
 178         /// is this an exact match at this position?
 179         bool find1(MathData const & ar, size_type pos) const;
 180
 181         ///
 182         void detachMacroParameters(Cursor * cur, const size_type macroPos);
 183         ///
 184         void attachMacroParameters(Cursor * cur, const size_type macroPos,
 185                 const size_type macroNumArgs, const int macroOptionals,
 186                 const bool fromInitToNormalMode, const bool interactiveInit,
 187                 const size_t appetite);
 188         ///
 189         void collectOptionalParameters(Cursor * cur,
 190                 const size_type numOptionalParams, std::vector<MathData> & params,
 191                 size_t & pos, MathAtom & scriptToPutAround,
 192                 const pos_type macroPos, const int thisPos, const int thisSlice);
 193         ///
 194         void collectParameters(Cursor * cur,
 195                 const size_type numParams, std::vector<MathData> & params,
 196                 size_t & pos, MathAtom & scriptToPutAround,
 197                 const pos_type macroPos, const int thisPos, const int thisSlice,
 198                 const size_t appetite);
 199 };
 200
 201 ///
 202 std::ostream & operator<<(std::ostream & os, MathData const & ar);
 203 ///
 204 odocstream & operator<<(odocstream & os, MathData const & ar);
 205
 206
 207 } // namespace lyx
 208
 209 #endif