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
  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_.substr(0, 5) != "under";
  28 }
  29
  30
  31 bool MathDecorationInset::isScriptable() const
  32 {
  33         return
  34                         name_ == "overbrace" ||
  35                         name_ == "underbrace" ||
  36                         name_ == "overleftarrow" ||
  37                         name_ == "overrightarrow" ||
  38                         name_ == "overleftrightarrow" ||
  39                         name_ == "underleftarrow" ||
  40                         name_ == "underrightarrow" ||
  41                         name_ == "underleftrightarrow";
  42 }
  43
  44
  45 bool MathDecorationInset::protect() const
  46 {
  47         return
  48                         name_ == "overbrace" ||
  49                         name_ == "underbrace" ||
  50                         name_ == "overleftarrow" ||
  51                         name_ == "overrightarrow" ||
  52                         name_ == "overleftrightarrow" ||
  53                         name_ == "underleftarrow" ||
  54                         name_ == "underrightarrow" ||
  55                         name_ == "underleftrightarrow";
  56 }
  57
  58
  59 bool MathDecorationInset::wide() const
  60 {
  61         return
  62                         name_ == "overline" ||
  63                         name_ == "underline" ||
  64                         name_ == "overbrace" ||
  65                         name_ == "underbrace" ||
  66                         name_ == "overleftarrow" ||
  67                         name_ == "overrightarrow" ||
  68                         name_ == "overleftrightarrow" ||
  69                         name_ == "widehat" ||
  70                         name_ == "widetilde" ||
  71                         name_ == "underleftarrow" ||
  72                         name_ == "underrightarrow" ||
  73                         name_ == "underleftrightarrow";
  74 }
  75
  76
  77 void MathDecorationInset::metrics(MathMetricsInfo const & mi) const
  78 {
  79         xcell(0).metrics(mi);
  80         width_   = xcell(0).width();
  81         ascent_  = xcell(0).ascent();
  82         descent_ = xcell(0).descent();
  83
  84         dh_ = 6; //mathed_char_height(LM_TC_VAR, mi(), 'I', ascent_, descent_);
  85         dw_ = 6; //mathed_char_width(LM_TC_VAR, mi, 'x');
  86
  87         if (upper()) {
  88                 dy_ = -ascent_ - dh_;
  89                 ascent_ += dh_ + 1;
  90         } else {
  91                 dy_ = descent_ + 1;
  92                 descent_ += dh_ + 2;
  93         }
  94 }
  95
  96
  97 void MathDecorationInset::draw(Painter & pain, int x, int y) const
  98 {
  99         xcell(0).draw(pain, x, y);
 100         if (wide())
 101                 mathed_draw_deco(pain, x, y + dy_, width_, dh_, name_);
 102         else
 103                 mathed_draw_deco(pain, x + (width_ - dw_) / 2, y + dy_, dw_, dh_, name_);
 104 }
 105
 106
 107 void MathDecorationInset::write(WriteStream & os) const
 108 {
 109         if (os.fragile() && protect())
 110                 os << "\\protect";
 111         os << '\\' << name_ << '{' << cell(0) << '}';
 112 }
 113
 114
 115 void MathDecorationInset::normalize(NormalStream & os) const
 116 {
 117         os << "[deco " << name_ << ' ' <<  cell(0) << ']';
 118 }