src/mathed/InsetMathString.cpp

   1 /**
   2  * \file InsetMathString.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "InsetMathString.h"
  14 #include "MathFactory.h"
  15 #include "MathStream.h"
  16 #include "MathSupport.h"
  17
  18 #include "Encoding.h"
  19
  20 #include "support/debug.h"
  21 #include "support/gettext.h"
  22 #include "support/lstrings.h"
  23 #include "support/textutils.h"
  24
  25
  26 namespace lyx {
  27
  28 InsetMathString::InsetMathString(docstring const & s)
  29         : str_(s)
  30 {}
  31
  32
  33 Inset * InsetMathString::clone() const
  34 {
  35         return new InsetMathString(*this);
  36 }
  37
  38
  39 void InsetMathString::metrics(MetricsInfo & mi, Dimension & dim) const
  40 {
  41         mathed_string_dim(mi.base.font, str_, dim);
  42 }
  43
  44
  45 void InsetMathString::draw(PainterInfo & pi, int x, int y) const
  46 {
  47         pi.draw(x, y, str_);
  48 }
  49
  50
  51 void InsetMathString::normalize(NormalStream & os) const
  52 {
  53         os << "[string " << str_ << ' ' << "mathalpha" << ']';
  54 }
  55
  56
  57 void InsetMathString::maple(MapleStream & os) const
  58 {
  59         if (/*code_ != LM_TC_VAR ||*/ str_.size() <= 1) {
  60                 os << ' ' << str_ << ' ';
  61                 return;
  62         }
  63
  64         // insert '*' between adjacent chars if type is LM_TC_VAR
  65         os << str_[0];
  66         for (size_t i = 1; i < str_.size(); ++i)
  67                 os << str_[i];
  68 }
  69
  70
  71 void InsetMathString::mathematica(MathematicaStream & os) const
  72 {
  73         os << ' ' << str_ << ' ';
  74 }
  75
  76
  77 void InsetMathString::octave(OctaveStream & os) const
  78 {
  79         if (/*code_ != LM_TC_VAR ||*/ str_.size() <= 1) {
  80                 os << ' ' << str_ << ' ';
  81                 return;
  82         }
  83
  84         // insert '*' between adjacent chars if type is LM_TC_VAR
  85         os << str_[0];
  86         for (size_t i = 1; i < str_.size(); ++i)
  87                 os << str_[i];
  88 }
  89
  90
  91 void InsetMathString::mathmlize(MathStream & os) const
  92 {
  93 /*
  94         if (code_ == LM_TC_VAR)
  95                 os << "<mi> " << str_ << " </mi>";
  96         else if (code_ == LM_TC_CONST)
  97                 os << "<mn> " << str_ << " </mn>";
  98         else if (code_ == LM_TC_RM || code_ == LM_TC_TEXTRM)
  99                 os << "<mtext> " << str_ <<  " </mtext>";
 100         else
 101 */
 102                 os << str_;
 103 }
 104
 105
 106 void InsetMathString::write(WriteStream & os) const
 107 {
 108         if (!os.latex() || os.lockedMode()) {
 109                 os << str_;
 110                 return;
 111         }
 112
 113         docstring::const_iterator cit = str_.begin();
 114         docstring::const_iterator end = str_.end();
 115
 116         // We may already be inside an \ensuremath command.
 117         bool in_forced_mode = os.pendingBrace();
 118
 119         // We will take care of matching braces.
 120         os.pendingBrace(false);
 121
 122         while (cit != end) {
 123                 bool mathmode = in_forced_mode ? os.textMode() : !os.textMode();
 124                 char_type const c = *cit;
 125                 docstring command(1, c);
 126                 try {
 127                         if (c < 0x80 || Encodings::latexMathChar(c, mathmode, os.encoding(), command)) {
 128                                 if (os.textMode()) {
 129                                         if (in_forced_mode) {
 130                                                 // we were inside \lyxmathsym
 131                                                 os << '}';
 132                                                 os.textMode(false);
 133                                                 in_forced_mode = false;
 134                                         }
 135                                         if (c >= 0x80 && os.textMode()) {
 136                                                 os << "\\ensuremath{";
 137                                                 os.textMode(false);
 138                                                 in_forced_mode = true;
 139                                         }
 140                                 } else if (c < 0x80 && in_forced_mode) {
 141                                         // we were inside \ensuremath
 142                                         os << '}';
 143                                         os.textMode(true);
 144                                         in_forced_mode = false;
 145                                 }
 146                         } else if (!os.textMode()) {
 147                                         if (in_forced_mode) {
 148                                                 // we were inside \ensuremath
 149                                                 os << '}';
 150                                                 in_forced_mode = false;
 151                                         } else {
 152                                                 os << "\\lyxmathsym{";
 153                                                 in_forced_mode = true;
 154                                         }
 155                                         os.textMode(true);
 156                         }
 157                         os << command;
 158                         // We may need a space if the command contains a macro
 159                         // and the last char is ASCII.
 160                         if (lyx::support::contains(command, '\\')
 161                             && isAlphaASCII(command[command.size() - 1]))
 162                                 os.pendingSpace(true);
 163                 } catch (EncodingException & e) {
 164                         switch (os.output()) {
 165                         case WriteStream::wsDryrun: {
 166                                 os << "<" << _("LyX Warning: ")
 167                                    << _("uncodable character") << " '";
 168                                 os << docstring(1, e.failed_char);
 169                                 os << "'>";
 170                                 break;
 171                         }
 172                         case WriteStream::wsPreview: {
 173                                 // indicate the encoding error by a boxed '?'
 174                                 os << "{\\fboxsep=1pt\\fbox{?}}";;
 175                                 LYXERR0("Uncodable character" << " '"
 176                                         << docstring(1, e.failed_char)
 177                                         << "'");
 178                                 break;
 179                         }
 180                         case WriteStream::wsDefault:
 181                         default:
 182                                 // throw again
 183                                 throw(e);
 184                         }
 185                 }
 186                 ++cit;
 187         }
 188
 189         if (in_forced_mode && os.textMode()) {
 190                 // We have to care for closing \lyxmathsym
 191                 os << '}';
 192                 os.textMode(false);
 193         } else {
 194                 os.pendingBrace(in_forced_mode);
 195         }
 196 }
 197
 198
 199 } // namespace lyx