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         : MathNestInset(1), key_(key)
  16 {
  17 }
  18
  19
  20 MathInset * MathDecorationInset::clone() const
  21 {
  22         return new MathDecorationInset(*this);
  23 }
  24
  25
  26 bool MathDecorationInset::upper() const
  27 {
  28         return key_->id != LM_underline && key_->id != LM_underbrace;
  29 }
  30
  31
  32 bool MathDecorationInset::protect() const
  33 {
  34         return
  35                         key_->name == "overbrace" ||
  36                         key_->name == "underbrace" ||
  37                         key_->name == "overleftarrow" ||
  38                         key_->name == "overrightarrow";
  39 }
  40
  41
  42 void MathDecorationInset::metrics(MathStyles st) const
  43 {
  44         xcell(0).metrics(st);
  45         size_    = st;
  46         width_   = xcell(0).width();
  47         ascent_  = xcell(0).ascent();
  48         descent_ = xcell(0).descent();
  49
  50         dh_ = 5; //mathed_char_height(LM_TC_VAR, size(), 'I', ascent_, descent_);
  51
  52         if (upper()) {
  53                 dy_ = -ascent_ - dh_;
  54                 ascent_ += dh_ + 1;
  55         } else {
  56                 dy_ = descent_ + 1;
  57                 descent_ += dh_ + 2;
  58         }
  59
  60         if (key_->id == LM_not) {
  61                 ascent_  += dh_;
  62                 descent_ += dh_;
  63                 dh_ = height();
  64                 dy_ = - ascent_;
  65         }
  66 }
  67
  68 void MathDecorationInset::draw(Painter & pain, int x, int y) const
  69 {
  70         xo(x);
  71         yo(x);
  72         xcell(0).draw(pain, x, y);
  73         mathed_draw_deco(pain, x, y + dy_, width_, dh_, key_);
  74 }
  75
  76
  77 void MathDecorationInset::write(ostream & os, bool fragile) const
  78 {
  79         if (fragile && protect())
  80                 os << "\\protect";
  81         os << '\\' << key_->name;
  82
  83         if (key_->id == LM_not)
  84                 os << ' ';
  85         else
  86                 os << '{';
  87
  88         cell(0).write(os, fragile);
  89
  90         if (key_->id != LM_not)
  91                 os << '}';
  92 }
  93
  94
  95 void MathDecorationInset::writeNormal(ostream & os) const
  96 {
  97         os << "[" << key_->name << " ";
  98         cell(0).writeNormal(os);
  99         os << "] ";
 100 }