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::isScriptable() const
  32 {
  33         return true;
  34 }
  35
  36
  37 bool MathDecorationInset::protect() const
  38 {
  39         return
  40                         name_ == "overbrace" ||
  41                         name_ == "underbrace" ||
  42                         name_ == "overleftarrow" ||
  43                         name_ == "overrightarrow";
  44 }
  45
  46
  47 void MathDecorationInset::metrics(MathStyles st) const
  48 {
  49         xcell(0).metrics(st);
  50         size_    = st;
  51         width_   = xcell(0).width();
  52         ascent_  = xcell(0).ascent();
  53         descent_ = xcell(0).descent();
  54
  55         dh_ = 5; //mathed_char_height(LM_TC_VAR, size(), 'I', ascent_, descent_);
  56
  57         if (upper()) {
  58                 dy_ = -ascent_ - dh_;
  59                 ascent_ += dh_ + 1;
  60         } else {
  61                 dy_ = descent_ + 1;
  62                 descent_ += dh_ + 2;
  63         }
  64 }
  65
  66
  67 void MathDecorationInset::draw(Painter & pain, int x, int y) const
  68 {
  69         xo(x);
  70         yo(x);
  71         xcell(0).draw(pain, x, y);
  72         mathed_draw_deco(pain, x, y + dy_, width_, dh_, name_);
  73 }
  74
  75
  76 void MathDecorationInset::write(ostream & os, bool fragile) const
  77 {
  78         if (fragile && protect())
  79                 os << "\\protect";
  80         os << '\\' << name_ << '{';
  81         cell(0).write(os, fragile);
  82         os << '}';
  83 }
  84
  85
  86 void MathDecorationInset::writeNormal(ostream & os) const
  87 {
  88         os << "[" << name_ << " ";
  89         cell(0).writeNormal(os);
  90         os << "] ";
  91 }