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
  13
  14 MathDecorationInset::MathDecorationInset(string const & name)
  15         : MathNestInset(1), name_(name)
  16 {}
  17
  18
  19 MathInset * MathDecorationInset::clone() const
  20 {
  21         return new MathDecorationInset(*this);
  22 }
  23
  24
  25 bool MathDecorationInset::upper() const
  26 {
  27         return
  28                         name_ != "underbar" &&
  29                         name_ != "underline" &&
  30                         name_ != "underbrace" &&
  31                         name_ != "underleftarrow" &&
  32                         name_ != "underrightarrow";
  33 }
  34
  35
  36 bool MathDecorationInset::isScriptable() const
  37 {
  38         return
  39                         name_ == "overbrace" ||
  40                         name_ == "underbrace" ||
  41                         name_ == "overleftarrow" ||
  42                         name_ == "overrightarrow" ||
  43                         name_ == "underleftarrow" ||
  44                         name_ == "underrightarrow";
  45 }
  46
  47
  48 bool MathDecorationInset::protect() const
  49 {
  50         return
  51                         name_ == "overbrace" ||
  52                         name_ == "underbrace" ||
  53                         name_ == "overleftarrow" ||
  54                         name_ == "overrightarrow" ||
  55                         name_ == "underleftarrow" ||
  56                         name_ == "underrightarrow";
  57 }
  58
  59
  60 bool MathDecorationInset::wide() const
  61 {
  62         return
  63                         name_ == "overline" ||
  64                         name_ == "underline" ||
  65                         name_ == "overbrace" ||
  66                         name_ == "underbrace" ||
  67                         name_ == "overleftarrow" ||
  68                         name_ == "overrightarrow" ||
  69                         name_ == "widehat" ||
  70                         name_ == "widetilde" ||
  71                         name_ == "underleftarrow" ||
  72                         name_ == "underrightarrow";
  73 }
  74
  75
  76 void MathDecorationInset::metrics(MathMetricsInfo const & st) const
  77 {
  78         xcell(0).metrics(st);
  79         size_    = st;
  80         width_   = xcell(0).width();
  81         ascent_  = xcell(0).ascent();
  82         descent_ = xcell(0).descent();
  83
  84         dh_ = 6; //mathed_char_height(LM_TC_VAR, size(), 'I', ascent_, descent_);
  85
  86         if (upper()) {
  87                 dy_ = -ascent_ - dh_;
  88                 ascent_ += dh_ + 1;
  89         } else {
  90                 dy_ = descent_ + 1;
  91                 descent_ += dh_ + 2;
  92         }
  93 }
  94
  95
  96 void MathDecorationInset::draw(Painter & pain, int x, int y) const
  97 {
  98         xcell(0).draw(pain, x, y);
  99         if (wide())
 100                 mathed_draw_deco(pain, x, y + dy_, width_, dh_, name_);
 101         else {
 102                 int w = mathed_char_width(LM_TC_VAR, size_, 'x');
 103                 mathed_draw_deco(pain, x + (width_ - w) / 2, y + dy_, w, dh_, name_);
 104         }
 105 }
 106
 107
 108 void MathDecorationInset::write(WriteStream & os) const
 109 {
 110         if (os.fragile() && protect())
 111                 os << "\\protect";
 112         os << '\\' << name_ << '{' << cell(0) << '}';
 113 }
 114
 115
 116 void MathDecorationInset::normalize(NormalStream & os) const
 117 {
 118         os << "[deco " << name_ << ' ' <<  cell(0) << ']';
 119 }