src/mathed/math_decorationinset.C

   1 #ifdef __GNUG__
   2 #pragma implementation
   3 #endif
   4
   5 #include "math_decorationinset.h"
   6 #include "mathed/support.h"
   7 #include "math_parser.h"
   8 #include "support/LOstream.h"
   9
  10
  11 using std::ostream;
  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 name_ != "underline" && name_ != "underbrace";
  28 }
  29
  30
  31 bool MathDecorationInset::protect() const
  32 {
  33         return
  34                         name_ == "overbrace" ||
  35                         name_ == "underbrace" ||
  36                         name_ == "overleftarrow" ||
  37                         name_ == "overrightarrow";
  38 }
  39
  40
  41 void MathDecorationInset::metrics(MathStyles st) const
  42 {
  43         xcell(0).metrics(st);
  44         size_    = st;
  45         width_   = xcell(0).width();
  46         ascent_  = xcell(0).ascent();
  47         descent_ = xcell(0).descent();
  48
  49         dh_ = 5; //mathed_char_height(LM_TC_VAR, size(), 'I', ascent_, descent_);
  50
  51         if (upper()) {
  52                 dy_ = -ascent_ - dh_;
  53                 ascent_ += dh_ + 1;
  54         } else {
  55                 dy_ = descent_ + 1;
  56                 descent_ += dh_ + 2;
  57         }
  58 }
  59
  60
  61 void MathDecorationInset::draw(Painter & pain, int x, int y) const
  62 {
  63         xo(x);
  64         yo(x);
  65         xcell(0).draw(pain, x, y);
  66         mathed_draw_deco(pain, x, y + dy_, width_, dh_, name_);
  67 }
  68
  69
  70 void MathDecorationInset::write(ostream & os, bool fragile) const
  71 {
  72         if (fragile && protect())
  73                 os << "\\protect";
  74         os << '\\' << name_ << '{';
  75         cell(0).write(os, fragile);
  76         os << '}';
  77 }
  78
  79
  80 void MathDecorationInset::writeNormal(ostream & os) const
  81 {
  82         os << "[" << name_ << " ";
  83         cell(0).writeNormal(os);
  84         os << "] ";
  85 }