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(latexkeys const * key)
  15         : MathInset(1), key_(key)
  16 {
  17         upper_ = key_->id != LM_underline && key_->id != LM_underbrace;
  18 }
  19
  20
  21 MathInset * MathDecorationInset::clone() const
  22 {
  23         return new MathDecorationInset(*this);
  24 }
  25
  26
  27
  28 void MathDecorationInset::metrics(MathStyles st)
  29 {
  30         xcell(0).metrics(st);
  31         size_    = st;
  32         width_   = xcell(0).width();
  33         ascent_  = xcell(0).ascent();
  34         descent_ = xcell(0).descent();
  35
  36         dh_ = 5; //mathed_char_height(LM_TC_VAR, size(), 'I', ascent_, descent_);
  37
  38         if (upper_) {
  39                 dy_ = -ascent_ - dh_;
  40                 ascent_ += dh_ + 1;
  41         } else {
  42                 dy_ = descent_ + 1;
  43                 descent_ += dh_ + 2;
  44         }
  45
  46         if (key_->id == LM_not) {
  47                 ascent_  += dh_;
  48                 descent_ += dh_;
  49                 dh_ = height();
  50                 dy_ = - ascent_;
  51         }
  52 }
  53
  54 void MathDecorationInset::draw(Painter & pain, int x, int y)
  55 {
  56         xo(x);
  57         yo(x);
  58         xcell(0).draw(pain, x, y);
  59         mathed_draw_deco(pain, x, y + dy_, width_, dh_, key_->id);
  60 }
  61
  62
  63 void MathDecorationInset::write(ostream & os, bool fragile) const
  64 {
  65         string name = key_->name;
  66         if (fragile &&
  67                         (name == "overbrace" ||
  68                          name == "underbrace" ||
  69                          name == "overleftarrow" ||
  70                          name == "overrightarrow"))
  71                 os << "\\protect";
  72         os << '\\' << name;
  73
  74         if (key_->id == LM_not)
  75                 os << ' ';
  76         else
  77                 os << '{';
  78
  79         cell(0).write(os, fragile);
  80
  81         if (key_->id != LM_not)
  82                 os << '}';
  83 }
  84
  85 void MathDecorationInset::writeNormal(ostream & os) const
  86 {
  87         os << "[" << key_->name << " ";
  88         cell(0).writeNormal(os);
  89         os << "] ";
  90 }