src/mathed/math_decorationinset.C

   1 /**
   2  * \file math_decorationinset.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Alejandro Aguilar Sierra
   7  * \author André Pönitz
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "math_decorationinset.h"
  15 #include "math_data.h"
  16 #include "math_support.h"
  17 #include "math_parser.h"
  18 #include "math_mathmlstream.h"
  19 #include "math_streamstr.h"
  20 #include "support/std_ostream.h"
  21
  22 using std::auto_ptr;
  23
  24
  25 MathDecorationInset::MathDecorationInset(latexkeys const * key)
  26         : MathNestInset(1), key_(key)
  27 {}
  28
  29
  30 auto_ptr<InsetBase> MathDecorationInset::clone() const
  31 {
  32         return auto_ptr<InsetBase>(new MathDecorationInset(*this));
  33 }
  34
  35
  36 bool MathDecorationInset::upper() const
  37 {
  38         return key_->name.substr(0, 5) != "under";
  39 }
  40
  41
  42 bool MathDecorationInset::isScriptable() const
  43 {
  44         return
  45                         key_->name == "overbrace" ||
  46                         key_->name == "underbrace" ||
  47                         key_->name == "overleftarrow" ||
  48                         key_->name == "overrightarrow" ||
  49                         key_->name == "overleftrightarrow" ||
  50                         key_->name == "underleftarrow" ||
  51                         key_->name == "underrightarrow" ||
  52                         key_->name == "underleftrightarrow";
  53 }
  54
  55
  56 bool MathDecorationInset::protect() const
  57 {
  58         return
  59                         key_->name == "overbrace" ||
  60                         key_->name == "underbrace" ||
  61                         key_->name == "overleftarrow" ||
  62                         key_->name == "overrightarrow" ||
  63                         key_->name == "overleftrightarrow" ||
  64                         key_->name == "underleftarrow" ||
  65                         key_->name == "underrightarrow" ||
  66                         key_->name == "underleftrightarrow";
  67 }
  68
  69
  70 bool MathDecorationInset::wide() const
  71 {
  72         return
  73                         key_->name == "overline" ||
  74                         key_->name == "underline" ||
  75                         key_->name == "overbrace" ||
  76                         key_->name == "underbrace" ||
  77                         key_->name == "overleftarrow" ||
  78                         key_->name == "overrightarrow" ||
  79                         key_->name == "overleftrightarrow" ||
  80                         key_->name == "widehat" ||
  81                         key_->name == "widetilde" ||
  82                         key_->name == "underleftarrow" ||
  83                         key_->name == "underrightarrow" ||
  84                         key_->name == "underleftrightarrow";
  85 }
  86
  87
  88 void MathDecorationInset::metrics(MetricsInfo & mi, Dimension & dim) const
  89 {
  90         cell(0).metrics(mi, dim);
  91
  92         dh_  = 6; //mathed_char_height(LM_TC_VAR, mi, 'I', ascent_, descent_);
  93         dw_  = 6; //mathed_char_width(LM_TC_VAR, mi, 'x');
  94
  95         if (upper()) {
  96                 dy_ = -dim.asc - dh_;
  97                 dim.asc += dh_ + 1;
  98         } else {
  99                 dy_ = dim.des + 1;
 100                 dim.des += dh_ + 2;
 101         }
 102
 103         metricsMarkers(dim);
 104         dim_ = dim;
 105 }
 106
 107
 108 void MathDecorationInset::draw(PainterInfo & pi, int x, int y) const
 109 {
 110         cell(0).draw(pi, x + 1, y);
 111         if (wide())
 112                 mathed_draw_deco(pi, x + 1, y + dy_, cell(0).width(), dh_, key_->name);
 113         else
 114                 mathed_draw_deco(pi, x + 1 + (pi.width - dw_) / 2,
 115                         y + dy_, dw_, dh_, key_->name);
 116         drawMarkers(pi, x, y);
 117 }
 118
 119
 120 void MathDecorationInset::write(WriteStream & os) const
 121 {
 122         if (os.fragile() && protect())
 123                 os << "\\protect";
 124         os << '\\' << key_->name << '{' << cell(0) << '}';
 125 }
 126
 127
 128 void MathDecorationInset::normalize(NormalStream & os) const
 129 {
 130         os << "[deco " << key_->name << ' ' <<  cell(0) << ']';
 131 }
 132
 133
 134 void MathDecorationInset::infoize(std::ostream & os) const
 135 {
 136         os << "Deco: " << key_->name;
 137 }