src/mathed/InsetMathDelim.cpp

   1 /**
   2  * \file InsetMathDelim.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Alejandro Aguilar Sierra
   7  * \author André Pönitz
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "InsetMathDelim.h"
  15
  16 #include "MathData.h"
  17 #include "MathStream.h"
  18 #include "MathSupport.h"
  19 #include "MetricsInfo.h"
  20
  21 #include "support/docstring.h"
  22
  23 #include "frontends/FontMetrics.h"
  24
  25 using namespace std;
  26
  27 namespace lyx {
  28
  29 static docstring convertDelimToLatexName(docstring const & name)
  30 {
  31         if (name.size() == 1) {
  32                 char_type const c = name[0];
  33                 if (c == '<' || c == '(' || c == '[' || c == '.'
  34                     || c == '>' || c == ')' || c == ']' || c == '/' || c == '|')
  35                         return name;
  36         }
  37         return '\\' + name + ' ';
  38 }
  39
  40
  41 InsetMathDelim::InsetMathDelim(Buffer * buf, docstring const & l,
  42                 docstring const & r)
  43         : InsetMathNest(buf, 1), left_(l), right_(r)
  44 {}
  45
  46
  47 InsetMathDelim::InsetMathDelim(Buffer * buf, docstring const & l, docstring const & r,
  48         MathData const & ar)
  49         : InsetMathNest(buf, 1), left_(l), right_(r)
  50 {
  51         cell(0) = ar;
  52 }
  53
  54
  55 Inset * InsetMathDelim::clone() const
  56 {
  57         return new InsetMathDelim(*this);
  58 }
  59
  60
  61 void InsetMathDelim::write(WriteStream & os) const
  62 {
  63         MathEnsurer ensurer(os);
  64         os << "\\left" << convertDelimToLatexName(left_) << cell(0)
  65            << "\\right" << convertDelimToLatexName(right_);
  66 }
  67
  68
  69 void InsetMathDelim::normalize(NormalStream & os) const
  70 {
  71         os << "[delim " << convertDelimToLatexName(left_) << ' '
  72            << convertDelimToLatexName(right_) << ' ' << cell(0) << ']';
  73 }
  74
  75
  76 void InsetMathDelim::metrics(MetricsInfo & mi, Dimension & dim) const
  77 {
  78         Dimension dim0;
  79         cell(0).metrics(mi, dim0);
  80         Dimension t = theFontMetrics(mi.base.font).dimension('I');
  81         int h0 = (t.asc + t.des) / 2;
  82         int a0 = max(dim0.asc, t.asc)   - h0;
  83         int d0 = max(dim0.des, t.des)  + h0;
  84         dw_ = dim0.height() / 5;
  85         if (dw_ > 8)
  86                 dw_ = 8;
  87         if (dw_ < 4)
  88                 dw_ = 4;
  89         dim.wid = dim0.width() + 2 * dw_ + 8;
  90         dim.asc = max(a0, d0) + h0;
  91         dim.des = max(a0, d0) - h0;
  92 }
  93
  94
  95 void InsetMathDelim::draw(PainterInfo & pi, int x, int y) const
  96 {
  97         Dimension const dim = dimension(*pi.base.bv);
  98         int const b = y - dim.asc;
  99         cell(0).draw(pi, x + dw_ + 4, y);
 100         mathed_draw_deco(pi, x + 4, b, dw_, dim.height(), left_);
 101         mathed_draw_deco(pi, x + dim.width() - dw_ - 4,
 102                 b, dw_, dim.height(), right_);
 103         setPosCache(pi, x, y);
 104 }
 105
 106
 107 bool InsetMathDelim::isParenthesis() const
 108 {
 109         return left_ == "(" && right_ == ")";
 110 }
 111
 112
 113 bool InsetMathDelim::isBrackets() const
 114 {
 115         return left_ == "[" && right_ == "]";
 116 }
 117
 118
 119 bool InsetMathDelim::isAbs() const
 120 {
 121         return left_ == "|" && right_ == "|";
 122 }
 123
 124
 125 void InsetMathDelim::maple(MapleStream & os) const
 126 {
 127         if (isAbs()) {
 128                 if (cell(0).size() == 1 && cell(0).front()->asMatrixInset())
 129                         os << "linalg[det](" << cell(0) << ')';
 130                 else
 131                         os << "abs(" << cell(0) << ')';
 132         }
 133         else
 134                 os << left_ << cell(0) << right_;
 135 }
 136
 137
 138 void InsetMathDelim::maxima(MaximaStream & os) const
 139 {
 140         if (isAbs()) {
 141                 if (cell(0).size() == 1 && cell(0).front()->asMatrixInset())
 142                         os << "determinant(" << cell(0) << ')';
 143                 else
 144                         os << "abs(" << cell(0) << ')';
 145         }
 146         else
 147                 os << left_ << cell(0) << right_;
 148 }
 149
 150
 151 void InsetMathDelim::mathematica(MathematicaStream & os) const
 152 {
 153         if (isAbs()) {
 154                 if (cell(0).size() == 1 && cell(0).front()->asMatrixInset())
 155                         os << "Det" << cell(0) << ']';
 156                 else
 157                         os << "Abs[" << cell(0) << ']';
 158         }
 159         else
 160                 os << left_ << cell(0) << right_;
 161 }
 162
 163
 164 void InsetMathDelim::mathmlize(MathStream & os) const
 165 {
 166         os << "<fenced open=\"" << left_ << "\" close=\""
 167                 << right_ << "\">" << cell(0) << "</fenced>";
 168 }
 169
 170
 171 void InsetMathDelim::octave(OctaveStream & os) const
 172 {
 173         if (isAbs())
 174                 os << "det(" << cell(0) << ')';
 175         else
 176                 os << left_ << cell(0) << right_;
 177 }
 178
 179
 180 } // namespace lyx