src/mathed/math_decorationinset.C

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