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 }
  32
  33
  34 bool MathDecorationInset::isScriptable() const
  35 {
  36         return
  37                         name_ == "overbrace" ||
  38                         name_ == "underbrace" ||
  39                         name_ == "overleftarrow" ||
  40                         name_ == "overrightarrow";
  41 }
  42
  43
  44 bool MathDecorationInset::protect() const
  45 {
  46         return
  47                         name_ == "overbrace" ||
  48                         name_ == "underbrace" ||
  49                         name_ == "overleftarrow" ||
  50                         name_ == "overrightarrow";
  51 }
  52
  53
  54 bool MathDecorationInset::wide() const
  55 {
  56         return
  57                         name_ == "overline" ||
  58                         name_ == "underline" ||
  59                         name_ == "overbrace" ||
  60                         name_ == "underbrace" ||
  61                         name_ == "overleftarrow" ||
  62                         name_ == "overrightarrow" ||
  63                         name_ == "widehat" ||
  64                         name_ == "widetilde";
  65 }
  66
  67
  68 void MathDecorationInset::metrics(MathMetricsInfo const & st) const
  69 {
  70         xcell(0).metrics(st);
  71         size_    = st;
  72         width_   = xcell(0).width();
  73         ascent_  = xcell(0).ascent();
  74         descent_ = xcell(0).descent();
  75
  76         dh_ = 5; //mathed_char_height(LM_TC_VAR, size(), 'I', ascent_, descent_);
  77
  78         if (upper()) {
  79                 dy_ = -ascent_ - dh_;
  80                 ascent_ += dh_ + 1;
  81         } else {
  82                 dy_ = descent_ + 1;
  83                 descent_ += dh_ + 2;
  84         }
  85 }
  86
  87
  88 void MathDecorationInset::draw(Painter & pain, int x, int y) const
  89 {
  90         xcell(0).draw(pain, x, y);
  91         if (wide())
  92                 mathed_draw_deco(pain, x, y + dy_, width_, dh_, name_);
  93         else {
  94                 int w = 2 + mathed_char_width(LM_TC_VAR, size_, 'x');
  95                 mathed_draw_deco(pain, x + (width_ - w) / 2, y + dy_, w, dh_, name_);
  96         }
  97 }
  98
  99
 100 void MathDecorationInset::write(WriteStream & os) const
 101 {
 102         if (os.fragile() && protect())
 103                 os << "\\protect";
 104         os << '\\' << name_ << '{' << cell(0) << '}';
 105 }
 106
 107
 108 void MathDecorationInset::normalize(NormalStream & os) const
 109 {
 110         os << "[deco " << name_ << ' ' <<  cell(0) << ']';
 111 }