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 "LaTeXFeatures.h"
  15 #include "math_decorationinset.h"
  16 #include "math_data.h"
  17 #include "math_support.h"
  18 #include "math_parser.h"
  19 #include "math_mathmlstream.h"
  20 #include "math_streamstr.h"
  21
  22 #include "debug.h"
  23
  24 #include "support/std_ostream.h"
  25
  26 using std::auto_ptr;
  27
  28
  29 MathDecorationInset::MathDecorationInset(latexkeys const * key)
  30         : MathNestInset(1), key_(key)
  31 {
  32 //      lyxerr << " creating deco " << key->name << std::endl;
  33 }
  34
  35
  36 auto_ptr<InsetBase> MathDecorationInset::doClone() const
  37 {
  38         return auto_ptr<InsetBase>(new MathDecorationInset(*this));
  39 }
  40
  41
  42 bool MathDecorationInset::upper() const
  43 {
  44         return key_->name.substr(0, 5) != "under";
  45 }
  46
  47
  48 bool MathDecorationInset::isScriptable() const
  49 {
  50         return
  51                         key_->name == "overbrace" ||
  52                         key_->name == "underbrace" ||
  53                         key_->name == "overleftarrow" ||
  54                         key_->name == "overrightarrow" ||
  55                         key_->name == "overleftrightarrow" ||
  56                         key_->name == "underleftarrow" ||
  57                         key_->name == "underrightarrow" ||
  58                         key_->name == "underleftrightarrow";
  59 }
  60
  61
  62 bool MathDecorationInset::protect() const
  63 {
  64         return
  65                         key_->name == "overbrace" ||
  66                         key_->name == "underbrace" ||
  67                         key_->name == "overleftarrow" ||
  68                         key_->name == "overrightarrow" ||
  69                         key_->name == "overleftrightarrow" ||
  70                         key_->name == "underleftarrow" ||
  71                         key_->name == "underrightarrow" ||
  72                         key_->name == "underleftrightarrow";
  73 }
  74
  75
  76 bool MathDecorationInset::wide() const
  77 {
  78         return
  79                         key_->name == "overline" ||
  80                         key_->name == "underline" ||
  81                         key_->name == "overbrace" ||
  82                         key_->name == "underbrace" ||
  83                         key_->name == "overleftarrow" ||
  84                         key_->name == "overrightarrow" ||
  85                         key_->name == "overleftrightarrow" ||
  86                         key_->name == "widehat" ||
  87                         key_->name == "widetilde" ||
  88                         key_->name == "underleftarrow" ||
  89                         key_->name == "underrightarrow" ||
  90                         key_->name == "underleftrightarrow";
  91 }
  92
  93
  94 bool MathDecorationInset::ams() const
  95 {
  96         return
  97                         key_->name == "overleftrightarrow" ||
  98                         key_->name == "underleftarrow" ||
  99                         key_->name == "underrightarrow" ||
 100                         key_->name == "underleftrightarrow";
 101 }
 102
 103
 104 void MathDecorationInset::metrics(MetricsInfo & mi, Dimension & dim) const
 105 {
 106         cell(0).metrics(mi, dim);
 107
 108         dh_  = 6; //mathed_char_height(LM_TC_VAR, mi, 'I', ascent_, descent_);
 109         dw_  = 6; //mathed_char_width(LM_TC_VAR, mi, 'x');
 110
 111         if (upper()) {
 112                 dy_ = -dim.asc - dh_;
 113                 dim.asc += dh_ + 1;
 114         } else {
 115                 dy_ = dim.des + 1;
 116                 dim.des += dh_ + 2;
 117         }
 118
 119         metricsMarkers(dim);
 120         dim_ = dim;
 121 }
 122
 123
 124 void MathDecorationInset::draw(PainterInfo & pi, int x, int y) const
 125 {
 126         cell(0).draw(pi, x + 1, y);
 127         if (wide())
 128                 mathed_draw_deco(pi, x + 1, y + dy_, cell(0).width(), dh_, key_->name);
 129         else
 130                 mathed_draw_deco(pi, x + 1 + (cell(0).width() - dw_) / 2,
 131                         y + dy_, dw_, dh_, key_->name);
 132         drawMarkers(pi, x, y);
 133 }
 134
 135
 136 void MathDecorationInset::validate(LaTeXFeatures & features) const
 137 {
 138         if (ams())
 139                 features.require("amsmath");
 140 }
 141
 142
 143 void MathDecorationInset::write(WriteStream & os) const
 144 {
 145         if (os.fragile() && protect())
 146                 os << "\\protect";
 147         os << '\\' << key_->name << '{' << cell(0) << '}';
 148 }
 149
 150
 151 void MathDecorationInset::normalize(NormalStream & os) const
 152 {
 153         os << "[deco " << key_->name << ' ' <<  cell(0) << ']';
 154 }
 155
 156
 157 void MathDecorationInset::infoize(std::ostream & os) const
 158 {
 159         os << "Deco: " << key_->name;
 160 }