src/mathed/InsetMathDecoration.cpp

   1 /**
   2  * \file InsetMathDecoration.cpp
   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 "InsetMathDecoration.h"
  15
  16 #include "MathData.h"
  17 #include "MathParser.h"
  18 #include "MathSupport.h"
  19 #include "MathStream.h"
  20 #include "MetricsInfo.h"
  21
  22 #include "LaTeXFeatures.h"
  23
  24 #include "support/debug.h"
  25
  26 #include <ostream>
  27
  28
  29 namespace lyx {
  30
  31
  32 InsetMathDecoration::InsetMathDecoration(Buffer * buf, latexkeys const * key)
  33         : InsetMathNest(buf, 1), key_(key)
  34 {
  35 //      lyxerr << " creating deco " << key->name << endl;
  36 }
  37
  38
  39 Inset * InsetMathDecoration::clone() const
  40 {
  41         return new InsetMathDecoration(*this);
  42 }
  43
  44
  45 bool InsetMathDecoration::upper() const
  46 {
  47         return key_->name.substr(0, 5) != "under";
  48 }
  49
  50
  51 bool InsetMathDecoration::isScriptable() const
  52 {
  53         return
  54                         key_->name == "overbrace" ||
  55                         key_->name == "underbrace" ||
  56                         key_->name == "overleftarrow" ||
  57                         key_->name == "overrightarrow" ||
  58                         key_->name == "overleftrightarrow" ||
  59                         key_->name == "underleftarrow" ||
  60                         key_->name == "underrightarrow" ||
  61                         key_->name == "underleftrightarrow";
  62 }
  63
  64
  65 bool InsetMathDecoration::protect() const
  66 {
  67         return
  68                         key_->name == "overbrace" ||
  69                         key_->name == "underbrace" ||
  70                         key_->name == "overleftarrow" ||
  71                         key_->name == "overrightarrow" ||
  72                         key_->name == "overleftrightarrow" ||
  73                         key_->name == "underleftarrow" ||
  74                         key_->name == "underrightarrow" ||
  75                         key_->name == "underleftrightarrow";
  76 }
  77
  78
  79 bool InsetMathDecoration::wide() const
  80 {
  81         return
  82                         key_->name == "overline" ||
  83                         key_->name == "underline" ||
  84                         key_->name == "overbrace" ||
  85                         key_->name == "underbrace" ||
  86                         key_->name == "overleftarrow" ||
  87                         key_->name == "overrightarrow" ||
  88                         key_->name == "overleftrightarrow" ||
  89                         key_->name == "widehat" ||
  90                         key_->name == "widetilde" ||
  91                         key_->name == "underleftarrow" ||
  92                         key_->name == "underrightarrow" ||
  93                         key_->name == "underleftrightarrow";
  94 }
  95
  96
  97 void InsetMathDecoration::metrics(MetricsInfo & mi, Dimension & dim) const
  98 {
  99         cell(0).metrics(mi, dim);
 100
 101         dh_  = 6; //mathed_char_height(LM_TC_VAR, mi, 'I', ascent_, descent_);
 102         dw_  = 6; //mathed_char_width(LM_TC_VAR, mi, 'x');
 103
 104         if (upper()) {
 105                 dy_ = -dim.asc - dh_;
 106                 dim.asc += dh_ + 1;
 107         } else {
 108                 dy_ = dim.des + 1;
 109                 dim.des += dh_ + 2;
 110         }
 111
 112         metricsMarkers(dim);
 113 }
 114
 115
 116 void InsetMathDecoration::draw(PainterInfo & pi, int x, int y) const
 117 {
 118         cell(0).draw(pi, x + 1, y);
 119         Dimension const & dim0 = cell(0).dimension(*pi.base.bv);
 120         if (wide())
 121                 mathed_draw_deco(pi, x + 1, y + dy_, dim0.wid, dh_, key_->name);
 122         else
 123                 mathed_draw_deco(pi, x + 1 + (dim0.wid - dw_) / 2,
 124                         y + dy_, dw_, dh_, key_->name);
 125         drawMarkers(pi, x, y);
 126         setPosCache(pi, x, y);
 127 }
 128
 129
 130 void InsetMathDecoration::write(WriteStream & os) const
 131 {
 132         MathEnsurer ensurer(os);
 133         if (os.fragile() && protect())
 134                 os << "\\protect";
 135         os << '\\' << key_->name << '{' << cell(0) << '}';
 136 }
 137
 138
 139 void InsetMathDecoration::normalize(NormalStream & os) const
 140 {
 141         os << "[deco " << key_->name << ' ' <<  cell(0) << ']';
 142 }
 143
 144
 145 void InsetMathDecoration::infoize(odocstream & os) const
 146 {
 147         os << "Deco: " << key_->name;
 148 }
 149
 150
 151 void InsetMathDecoration::validate(LaTeXFeatures & features) const
 152 {
 153         if (!key_->requires.empty())
 154                 features.require(to_utf8(key_->requires));
 155         InsetMathNest::validate(features);
 156 }
 157
 158
 159 } // namespace lyx