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