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 #include <ostream>
  14
  15
  16 MathDecorationInset::MathDecorationInset(string const & name)
  17         : MathNestInset(1), name_(name)
  18 {}
  19
  20
  21 MathInset * MathDecorationInset::clone() const
  22 {
  23         return new MathDecorationInset(*this);
  24 }
  25
  26
  27 bool MathDecorationInset::upper() const
  28 {
  29         return name_.substr(0, 5) != "under";
  30 }
  31
  32
  33 bool MathDecorationInset::isScriptable() const
  34 {
  35         return
  36                         name_ == "overbrace" ||
  37                         name_ == "underbrace" ||
  38                         name_ == "overleftarrow" ||
  39                         name_ == "overrightarrow" ||
  40                         name_ == "overleftrightarrow" ||
  41                         name_ == "underleftarrow" ||
  42                         name_ == "underrightarrow" ||
  43                         name_ == "underleftrightarrow";
  44 }
  45
  46
  47 bool MathDecorationInset::protect() const
  48 {
  49         return
  50                         name_ == "overbrace" ||
  51                         name_ == "underbrace" ||
  52                         name_ == "overleftarrow" ||
  53                         name_ == "overrightarrow" ||
  54                         name_ == "overleftrightarrow" ||
  55                         name_ == "underleftarrow" ||
  56                         name_ == "underrightarrow" ||
  57                         name_ == "underleftrightarrow";
  58 }
  59
  60
  61 bool MathDecorationInset::wide() const
  62 {
  63         return
  64                         name_ == "overline" ||
  65                         name_ == "underline" ||
  66                         name_ == "overbrace" ||
  67                         name_ == "underbrace" ||
  68                         name_ == "overleftarrow" ||
  69                         name_ == "overrightarrow" ||
  70                         name_ == "overleftrightarrow" ||
  71                         name_ == "widehat" ||
  72                         name_ == "widetilde" ||
  73                         name_ == "underleftarrow" ||
  74                         name_ == "underrightarrow" ||
  75                         name_ == "underleftrightarrow";
  76 }
  77
  78
  79 void MathDecorationInset::metrics(MathMetricsInfo & mi) const
  80 {
  81         xcell(0).metrics(mi);
  82         width_   = xcell(0).width();
  83         ascent_  = xcell(0).ascent();
  84         descent_ = xcell(0).descent();
  85
  86         dh_ = 6; //mathed_char_height(LM_TC_VAR, mi, 'I', ascent_, descent_);
  87         dw_ = 6; //mathed_char_width(LM_TC_VAR, mi, 'x');
  88
  89         if (upper()) {
  90                 dy_ = -ascent_ - dh_;
  91                 ascent_ += dh_ + 1;
  92         } else {
  93                 dy_ = descent_ + 1;
  94                 descent_ += dh_ + 2;
  95         }
  96
  97         // for the angular markers
  98         descent_ += 2;
  99         width_   += 2;
 100 }
 101
 102
 103 void MathDecorationInset::draw(MathPainterInfo & pi, int x, int y) const
 104 {
 105         xcell(0).draw(pi, x + 1, y);
 106         if (wide())
 107                 mathed_draw_deco(pi, x + 1, y + dy_, width_, dh_, name_);
 108         else
 109                 mathed_draw_deco(pi, x + 1 + (width_ - dw_) / 2, y + dy_, dw_, dh_, name_);
 110         drawMarkers(pi, x, y);
 111 }
 112
 113
 114 void MathDecorationInset::write(WriteStream & os) const
 115 {
 116         if (os.fragile() && protect())
 117                 os << "\\protect";
 118         os << '\\' << name_ << '{' << cell(0) << '}';
 119 }
 120
 121
 122 void MathDecorationInset::normalize(NormalStream & os) const
 123 {
 124         os << "[deco " << name_ << ' ' <<  cell(0) << ']';
 125 }
 126
 127
 128 void MathDecorationInset::infoize(std::ostream & os) const
 129 {
 130         os << "Deco: " << name_;
 131 }