src/mathed/InsetMathFrac.h

   1 // -*- C++ -*-
   2 /**
   3  * \file InsetMathFrac.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 Uwe Stöhr
  10  *
  11  * Full author contact details are available in file CREDITS.
  12  */
  13
  14 #ifndef MATH_FRAC_H
  15 #define MATH_FRAC_H
  16
  17 #include "InsetMathNest.h"
  18
  19
  20 namespace lyx {
  21
  22
  23 class InsetMathFracBase : public InsetMathNest {
  24 public:
  25         ///
  26         InsetMathFracBase(Buffer * buf, idx_type ncells = 2);
  27         ///
  28         bool idxUpDown(Cursor &, bool up) const;
  29         ///
  30         bool idxBackward(Cursor &) const { return false; }
  31         ///
  32         bool idxForward(Cursor &) const { return false; }
  33 };
  34
  35
  36
  37 /// Fraction like objects (frac, binom)
  38 class InsetMathFrac : public InsetMathFracBase {
  39 public:
  40         ///
  41         enum Kind {
  42                 FRAC,
  43                 CFRAC,
  44                 CFRACLEFT,
  45                 CFRACRIGHT,
  46                 DFRAC,
  47                 TFRAC,
  48                 OVER,
  49                 ATOP,
  50                 NICEFRAC,
  51                 UNITFRAC,
  52                 UNIT
  53         };
  54         ///
  55         explicit InsetMathFrac(Buffer * buf, Kind kind = FRAC, idx_type ncells = 2);
  56         ///
  57         bool idxForward(Cursor &) const;
  58         ///
  59         bool idxBackward(Cursor &) const;
  60         ///
  61         void metrics(MetricsInfo & mi, Dimension & dim) const;
  62         ///
  63         void draw(PainterInfo &, int x, int y) const;
  64         ///
  65         void metricsT(TextMetricsInfo const & mi, Dimension & dim) const;
  66         ///
  67         void drawT(TextPainter &, int x, int y) const;
  68         /// identifies FracInsets
  69         InsetMathFrac * asFracInset();
  70         /// identifies FracInsets
  71         InsetMathFrac const * asFracInset() const;
  72         ///
  73         docstring name() const;
  74         ///
  75         bool extraBraces() const;
  76         ///
  77         void write(WriteStream & os) const;
  78         ///
  79         void maple(MapleStream &) const;
  80         ///
  81         void mathematica(MathematicaStream &) const;
  82         ///
  83         void octave(OctaveStream &) const;
  84         ///
  85         void mathmlize(MathStream &) const;
  86         ///
  87         void validate(LaTeXFeatures & features) const;
  88 public:
  89         Inset * clone() const;
  90         ///
  91         Kind kind_;
  92 };
  93
  94
  95
  96 /// Binom like objects
  97 class InsetMathBinom : public InsetMathFracBase {
  98 public:
  99         ///
 100         enum Kind {
 101                 BINOM,
 102                 DBINOM,
 103                 TBINOM,
 104                 CHOOSE,
 105                 BRACE,
 106                 BRACK
 107         };
 108         ///
 109         explicit InsetMathBinom(Buffer * buf, Kind kind = BINOM);
 110         ///
 111         void write(WriteStream & os) const;
 112         ///
 113         void normalize(NormalStream &) const;
 114         ///
 115         void metrics(MetricsInfo & mi, Dimension & dim) const;
 116         ///
 117         void draw(PainterInfo &, int x, int y) const;
 118         /// draw decorations.
 119         void drawDecoration(PainterInfo & pi, int x, int y) const
 120         { drawMarkers2(pi, x, y); }
 121         ///
 122         bool extraBraces() const;
 123         ///
 124         void mathmlize(MathStream &) const;
 125         ///
 126         void validate(LaTeXFeatures & features) const;
 127         ///
 128         InsetCode lyxCode() const { return MATH_FRAC_CODE; }
 129 private:
 130         Inset * clone() const;
 131         ///
 132         int dw(int height) const;
 133         ///
 134         Kind kind_;
 135 };
 136
 137
 138
 139 } // namespace lyx
 140
 141 #endif