src/mathed/math_decorationinset.C

   1 #include <config.h>
   2
   3 #ifdef __GNUG__
   4 #pragma implementation
   5 #endif
   6
   7 #include "math_decorationinset.h"
   8 #include "math_support.h"
   9 #include "math_parser.h"
  10 #include "math_mathmlstream.h"
  11 #include "math_streamstr.h"
  12 #include "support/LOstream.h"
  13
  14
  15 MathDecorationInset::MathDecorationInset(latexkeys const * key)
  16         : MathNestInset(1), key_(key)
  17 {}
  18
  19
  20 MathInset * MathDecorationInset::clone() const
  21 {
  22         return new MathDecorationInset(*this);
  23 }
  24
  25
  26 bool MathDecorationInset::upper() const
  27 {
  28         return key_->name.substr(0, 5) != "under";
  29 }
  30
  31
  32 bool MathDecorationInset::isScriptable() const
  33 {
  34         return
  35                         key_->name == "overbrace" ||
  36                         key_->name == "underbrace" ||
  37                         key_->name == "overleftarrow" ||
  38                         key_->name == "overrightarrow" ||
  39                         key_->name == "overleftrightarrow" ||
  40                         key_->name == "underleftarrow" ||
  41                         key_->name == "underrightarrow" ||
  42                         key_->name == "underleftrightarrow";
  43 }
  44
  45
  46 bool MathDecorationInset::protect() const
  47 {
  48         return
  49                         key_->name == "overbrace" ||
  50                         key_->name == "underbrace" ||
  51                         key_->name == "overleftarrow" ||
  52                         key_->name == "overrightarrow" ||
  53                         key_->name == "overleftrightarrow" ||
  54                         key_->name == "underleftarrow" ||
  55                         key_->name == "underrightarrow" ||
  56                         key_->name == "underleftrightarrow";
  57 }
  58
  59
  60 bool MathDecorationInset::wide() const
  61 {
  62         return
  63                         key_->name == "overline" ||
  64                         key_->name == "underline" ||
  65                         key_->name == "overbrace" ||
  66                         key_->name == "underbrace" ||
  67                         key_->name == "overleftarrow" ||
  68                         key_->name == "overrightarrow" ||
  69                         key_->name == "overleftrightarrow" ||
  70                         key_->name == "widehat" ||
  71                         key_->name == "widetilde" ||
  72                         key_->name == "underleftarrow" ||
  73                         key_->name == "underrightarrow" ||
  74                         key_->name == "underleftrightarrow";
  75 }
  76
  77
  78 void MathDecorationInset::metrics(MathMetricsInfo & mi) const
  79 {
  80         cell(0).metrics(mi);
  81         dim_ = cell(0).dim();
  82         dh_  = 6; //mathed_char_height(LM_TC_VAR, mi, 'I', ascent_, descent_);
  83         dw_  = 6; //mathed_char_width(LM_TC_VAR, mi, 'x');
  84
  85         if (upper()) {
  86                 dy_ = -dim_.a - dh_;
  87                 dim_.a += dh_ + 1;
  88         } else {
  89                 dy_ = dim_.d + 1;
  90                 dim_.d += dh_ + 2;
  91         }
  92
  93         metricsMarkers();
  94 }
  95
  96
  97 void MathDecorationInset::draw(MathPainterInfo & pi, int x, int y) const
  98 {
  99         cell(0).draw(pi, x + 1, y);
 100         if (wide())
 101                 mathed_draw_deco(pi, x + 1, y + dy_, width(), dh_, key_->name);
 102         else
 103                 mathed_draw_deco(pi, x + 1 + (width() - dw_) / 2, y + dy_, dw_, dh_, key_->name);
 104         drawMarkers(pi, x, y);
 105 }
 106
 107
 108 void MathDecorationInset::write(WriteStream & os) const
 109 {
 110         if (os.fragile() && protect())
 111                 os << "\\protect";
 112         os << '\\' << key_->name << '{' << cell(0) << '}';
 113 }
 114
 115
 116 void MathDecorationInset::normalize(NormalStream & os) const
 117 {
 118         os << "[deco " << key_->name << ' ' <<  cell(0) << ']';
 119 }
 120
 121
 122 void MathDecorationInset::infoize(std::ostream & os) const
 123 {
 124         os << "Deco: " << key_->name;
 125 }