src/Font.cpp

   1 /**
   2  * \file src/Font.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author Jean-Marc Lasgouttes
   8  * \author Angus Leeming
   9  * \author André Pönitz
  10  * \author Dekel Tsur
  11  *
  12  * Full author contact details are available in file CREDITS.
  13  */
  14
  15 #include <config.h>
  16
  17 #include "Font.h"
  18
  19 #include "BufferParams.h" // stateText
  20 #include "Color.h"
  21 #include "Encoding.h"
  22 #include "Language.h"
  23 #include "LaTeXFeatures.h"
  24 #include "Lexer.h"
  25 #include "LyXRC.h"
  26 #include "output_latex.h"
  27 #include "OutputParams.h"
  28
  29 #include "support/lassert.h"
  30 #include "support/convert.h"
  31 #include "support/debug.h"
  32 #include "support/gettext.h"
  33 #include "support/lstrings.h"
  34
  35 #include <cstring>
  36
  37 using namespace std;
  38 using namespace lyx::support;
  39
  40 namespace lyx {
  41
  42 //
  43 // Names for the GUI
  44 //
  45
  46 namespace {
  47
  48 char const * GUIFamilyNames[NUM_FAMILIES + 2 /* default & error */] =
  49 { N_("Roman"), N_("Sans Serif"), N_("Typewriter"), N_("Symbol"),
  50   "cmr", "cmsy", "cmm", "cmex", "msa", "msb", "eufrak", "wasy", "esint",
  51   N_("Inherit"), N_("Ignore") };
  52
  53 char const * GUISeriesNames[4] =
  54 { N_("Medium"), N_("Bold"), N_("Inherit"), N_("Ignore") };
  55
  56 char const * GUIShapeNames[6] =
  57 { N_("Upright"), N_("Italic"), N_("Slanted"), N_("Smallcaps"), N_("Inherit"),
  58   N_("Ignore") };
  59
  60 char const * GUISizeNames[14] =
  61 { N_("Tiny"), N_("Smallest"), N_("Smaller"), N_("Small"), N_("Normal"), N_("Large"),
  62   N_("Larger"), N_("Largest"), N_("Huge"), N_("Huger"), N_("Increase"), N_("Decrease"),
  63   N_("Inherit"), N_("Ignore") };
  64
  65 char const * GUIMiscNames[5] =
  66 { N_("Off"), N_("On"), N_("Toggle"), N_("Inherit"), N_("Ignore") };
  67
  68
  69 //
  70 // Strings used to read and write .lyx format files
  71 //
  72 char const * LyXFamilyNames[NUM_FAMILIES + 2 /* default & error */] =
  73 { "roman", "sans", "typewriter", "symbol",
  74   "cmr", "cmsy", "cmm", "cmex", "msa", "msb", "eufrak", "wasy", "esint",
  75   "default", "error" };
  76
  77 char const * LyXSeriesNames[4] =
  78 { "medium", "bold", "default", "error" };
  79
  80 char const * LyXShapeNames[6] =
  81 { "up", "italic", "slanted", "smallcaps", "default", "error" };
  82
  83 char const * LyXSizeNames[14] =
  84 { "tiny", "scriptsize", "footnotesize", "small", "normal", "large",
  85   "larger", "largest", "huge", "giant",
  86   "increase", "decrease", "default", "error" };
  87
  88 char const * LyXMiscNames[5] =
  89 { "off", "on", "toggle", "default", "error" };
  90
  91 //
  92 // Strings used to write LaTeX files
  93 //
  94 char const * LaTeXFamilyNames[6] =
  95 { "textrm", "textsf", "texttt", "error1", "error2", "error3" };
  96
  97 char const * LaTeXSeriesNames[4] =
  98 { "textmd", "textbf", "error4", "error5" };
  99
 100 char const * LaTeXShapeNames[6] =
 101 { "textup", "textit", "textsl", "textsc", "error6", "error7" };
 102
 103 char const * LaTeXSizeNames[14] =
 104 { "tiny", "scriptsize", "footnotesize", "small", "normalsize", "large",
 105   "Large", "LARGE", "huge", "Huge", "error8", "error9", "error10", "error11" };
 106
 107 } // namespace anon
 108
 109
 110 Font::Font(FontInfo bits, Language const * l)
 111         : bits_(bits), lang_(l), open_encoding_(false)
 112 {
 113         if (!lang_)
 114                 lang_ = default_language;
 115 }
 116
 117
 118 bool Font::isRightToLeft() const
 119 {
 120         return lang_->rightToLeft();
 121 }
 122
 123
 124 bool Font::isVisibleRightToLeft() const
 125 {
 126         return (lang_->rightToLeft() &&
 127                 bits_.number() != FONT_ON);
 128 }
 129
 130
 131 void Font::setLanguage(Language const * l)
 132 {
 133         lang_ = l;
 134 }
 135
 136
 137 /// Updates font settings according to request
 138 void Font::update(Font const & newfont,
 139                      Language const * document_language,
 140                      bool toggleall)
 141 {
 142         bits_.update(newfont.fontInfo(), toggleall);
 143
 144         if (newfont.language() == language() && toggleall)
 145                 if (language() == document_language)
 146                         setLanguage(default_language);
 147                 else
 148                         setLanguage(document_language);
 149         else if (newfont.language() == reset_language)
 150                 setLanguage(document_language);
 151         else if (newfont.language() != ignore_language)
 152                 setLanguage(newfont.language());
 153 }
 154
 155
 156 docstring const stateText(FontInfo const & f)
 157 {
 158         odocstringstream os;
 159         if (f.family() != INHERIT_FAMILY)
 160                 os << _(GUIFamilyNames[f.family()]) << ", ";
 161         if (f.series() != INHERIT_SERIES)
 162                 os << _(GUISeriesNames[f.series()]) << ", ";
 163         if (f.shape() != INHERIT_SHAPE)
 164                 os << _(GUIShapeNames[f.shape()]) << ", ";
 165         if (f.size() != FONT_SIZE_INHERIT)
 166                 os << _(GUISizeNames[f.size()]) << ", ";
 167         if (f.color() != Color_inherit)
 168                 os << lcolor.getGUIName(f.color()) << ", ";
 169         // FIXME: uncomment this when we support background.
 170         //if (f.background() != Color_inherit)
 171         //      os << lcolor.getGUIName(f.background()) << ", ";
 172         if (f.emph() != FONT_INHERIT)
 173                 os << bformat(_("Emphasis %1$s, "),
 174                               _(GUIMiscNames[f.emph()]));
 175         if (f.underbar() != FONT_INHERIT)
 176                 os << bformat(_("Underline %1$s, "),
 177                               _(GUIMiscNames[f.underbar()]));
 178         if (f.noun() != FONT_INHERIT)
 179                 os << bformat(_("Noun %1$s, "),
 180                               _(GUIMiscNames[f.noun()]));
 181         if (f == inherit_font)
 182                 os << _("Default") << ", ";
 183
 184         return os.str();
 185 }
 186
 187
 188 docstring const Font::stateText(BufferParams * params) const
 189 {
 190         odocstringstream os;
 191         os << lyx::stateText(bits_);
 192         if (!params || (language() != params->language))
 193                 os << bformat(_("Language: %1$s, "),
 194                               _(language()->display()));
 195         if (bits_.number() != FONT_OFF)
 196                 os << bformat(_("  Number %1$s"),
 197                               _(GUIMiscNames[bits_.number()]));
 198         return rtrim(os.str(), ", ");
 199 }
 200
 201
 202 // Set family according to lyx format string
 203 void setLyXFamily(string const & fam, FontInfo & f)
 204 {
 205         string const s = ascii_lowercase(fam);
 206
 207         int i = 0;
 208         while (LyXFamilyNames[i] != s &&
 209                LyXFamilyNames[i] != string("error"))
 210                 ++i;
 211         if (s == LyXFamilyNames[i])
 212                 f.setFamily(FontFamily(i));
 213         else
 214                 lyxerr << "setLyXFamily: Unknown family `"
 215                        << s << '\'' << endl;
 216 }
 217
 218
 219 // Set series according to lyx format string
 220 void setLyXSeries(string const & ser, FontInfo & f)
 221 {
 222         string const s = ascii_lowercase(ser);
 223
 224         int i = 0;
 225         while (LyXSeriesNames[i] != s &&
 226                LyXSeriesNames[i] != string("error")) ++i;
 227         if (s == LyXSeriesNames[i]) {
 228                 f.setSeries(FontSeries(i));
 229         } else
 230                 lyxerr << "setLyXSeries: Unknown series `"
 231                        << s << '\'' << endl;
 232 }
 233
 234
 235 // Set shape according to lyx format string
 236 void setLyXShape(string const & sha, FontInfo & f)
 237 {
 238         string const s = ascii_lowercase(sha);
 239
 240         int i = 0;
 241         while (LyXShapeNames[i] != s && LyXShapeNames[i] != string("error"))
 242                         ++i;
 243         if (s == LyXShapeNames[i])
 244                 f.setShape(FontShape(i));
 245         else
 246                 lyxerr << "Font::setLyXShape: Unknown shape `"
 247                        << s << '\'' << endl;
 248 }
 249
 250
 251 // Set size according to lyx format string
 252 void setLyXSize(string const & siz, FontInfo & f)
 253 {
 254         string const s = ascii_lowercase(siz);
 255         int i = 0;
 256         while (LyXSizeNames[i] != s && LyXSizeNames[i] != string("error"))
 257                 ++i;
 258         if (s == LyXSizeNames[i]) {
 259                 f.setSize(FontSize(i));
 260         } else
 261                 lyxerr << "Font::setLyXSize: Unknown size `"
 262                        << s << '\'' << endl;
 263 }
 264
 265
 266 // Set size according to lyx format string
 267 FontState Font::setLyXMisc(string const & siz)
 268 {
 269         string const s = ascii_lowercase(siz);
 270         int i = 0;
 271         while (LyXMiscNames[i] != s &&
 272                LyXMiscNames[i] != string("error")) ++i;
 273         if (s == LyXMiscNames[i])
 274                 return FontState(i);
 275         lyxerr << "Font::setLyXMisc: Unknown misc flag `"
 276                << s << '\'' << endl;
 277         return FONT_OFF;
 278 }
 279
 280
 281 /// Sets color after LyX text format
 282 void setLyXColor(string const & col, FontInfo & f)
 283 {
 284         f.setColor(lcolor.getFromLyXName(col));
 285 }
 286
 287
 288 // Returns size in latex format
 289 string const Font::latexSize() const
 290 {
 291         return LaTeXSizeNames[bits_.size()];
 292 }
 293
 294
 295 // Read a font definition from given file in lyx format
 296 // Used for layouts
 297 FontInfo lyxRead(Lexer & lex, FontInfo const & fi)
 298 {
 299         FontInfo f = fi;
 300         bool error = false;
 301         bool finished = false;
 302         while (!finished && lex.isOK() && !error) {
 303                 lex.next();
 304                 string const tok = ascii_lowercase(lex.getString());
 305
 306                 if (tok.empty()) {
 307                         continue;
 308                 } else if (tok == "endfont") {
 309                         finished = true;
 310                 } else if (tok == "family") {
 311                         lex.next();
 312                         string const ttok = lex.getString();
 313                         setLyXFamily(ttok, f);
 314                 } else if (tok == "series") {
 315                         lex.next();
 316                         string const ttok = lex.getString();
 317                         setLyXSeries(ttok, f);
 318                 } else if (tok == "shape") {
 319                         lex.next();
 320                         string const ttok = lex.getString();
 321                         setLyXShape(ttok, f);
 322                 } else if (tok == "size") {
 323                         lex.next();
 324                         string const ttok = lex.getString();
 325                         setLyXSize(ttok, f);
 326                 } else if (tok == "misc") {
 327                         lex.next();
 328                         string const ttok = ascii_lowercase(lex.getString());
 329
 330                         if (ttok == "no_bar") {
 331                                 f.setUnderbar(FONT_OFF);
 332                         } else if (ttok == "no_emph") {
 333                                 f.setEmph(FONT_OFF);
 334                         } else if (ttok == "no_noun") {
 335                                 f.setNoun(FONT_OFF);
 336                         } else if (ttok == "emph") {
 337                                 f.setEmph(FONT_ON);
 338                         } else if (ttok == "underbar") {
 339                                 f.setUnderbar(FONT_ON);
 340                         } else if (ttok == "noun") {
 341                                 f.setNoun(FONT_ON);
 342                         } else {
 343                                 lex.printError("Illegal misc type");
 344                         }
 345                 } else if (tok == "color") {
 346                         lex.next();
 347                         string const ttok = lex.getString();
 348                         setLyXColor(ttok, f);
 349                 } else {
 350                         lex.printError("Unknown tag");
 351                         error = true;
 352                 }
 353         }
 354         return f;
 355 }
 356
 357
 358 /// Writes the changes from this font to orgfont in .lyx format in file
 359 void Font::lyxWriteChanges(Font const & orgfont,
 360                               ostream & os) const
 361 {
 362         os << "\n";
 363         if (orgfont.fontInfo().family() != bits_.family())
 364                 os << "\\family " << LyXFamilyNames[bits_.family()] << "\n";
 365         if (orgfont.fontInfo().series() != bits_.series())
 366                 os << "\\series " << LyXSeriesNames[bits_.series()] << "\n";
 367         if (orgfont.fontInfo().shape() != bits_.shape())
 368                 os << "\\shape " << LyXShapeNames[bits_.shape()] << "\n";
 369         if (orgfont.fontInfo().size() != bits_.size())
 370                 os << "\\size " << LyXSizeNames[bits_.size()] << "\n";
 371         if (orgfont.fontInfo().emph() != bits_.emph())
 372                 os << "\\emph " << LyXMiscNames[bits_.emph()] << "\n";
 373         if (orgfont.fontInfo().number() != bits_.number())
 374                 os << "\\numeric " << LyXMiscNames[bits_.number()] << "\n";
 375         if (orgfont.fontInfo().underbar() != bits_.underbar()) {
 376                 // This is only for backwards compatibility
 377                 switch (bits_.underbar()) {
 378                 case FONT_OFF:  os << "\\bar no\n"; break;
 379                 case FONT_ON:        os << "\\bar under\n"; break;
 380                 case FONT_TOGGLE:       lyxerr << "Font::lyxWriteFontChanges: "
 381                                         "FONT_TOGGLE should not appear here!"
 382                                        << endl;
 383                 break;
 384                 case FONT_INHERIT:   os << "\\bar default\n"; break;
 385                 case FONT_IGNORE:    lyxerr << "Font::lyxWriteFontChanges: "
 386                                         "IGNORE should not appear here!"
 387                                        << endl;
 388                 break;
 389                 }
 390         }
 391         if (orgfont.fontInfo().noun() != bits_.noun()) {
 392                 os << "\\noun " << LyXMiscNames[bits_.noun()] << "\n";
 393         }
 394         if (orgfont.fontInfo().color() != bits_.color())
 395                 os << "\\color " << lcolor.getLyXName(bits_.color()) << '\n';
 396         // FIXME: uncomment this when we support background.
 397         //if (orgfont.fontInfo().background() != bits_.background())
 398         //      os << "\\color " << lcolor.getLyXName(bits_.background()) << '\n';
 399         if (orgfont.language() != language() &&
 400             language() != latex_language) {
 401                 if (language())
 402                         os << "\\lang " << language()->lang() << "\n";
 403                 else
 404                         os << "\\lang unknown\n";
 405         }
 406 }
 407
 408
 409 /// Writes the head of the LaTeX needed to impose this font
 410 // Returns number of chars written.
 411 int Font::latexWriteStartChanges(odocstream & os, BufferParams const & bparams,
 412                                     OutputParams const & runparams,
 413                                     Font const & base,
 414                                     Font const & prev) const
 415 {
 416         bool env = false;
 417
 418         int count = 0;
 419         if (language()->babel() != base.language()->babel() &&
 420             language() != prev.language()) {
 421                 if (language()->lang() == "farsi") {
 422                         os << "\\textFR{";
 423                         count += 8;
 424                 } else if (!isRightToLeft() &&
 425                             base.language()->lang() == "farsi") {
 426                         os << "\\textLR{";
 427                         count += 8;
 428                 } else if (language()->lang() == "arabic_arabi") {
 429                         os << "\\textAR{";
 430                         count += 8;
 431                 } else if (!isRightToLeft() &&
 432                                 base.language()->lang() == "arabic_arabi") {
 433                         os << "\\textLR{";
 434                         count += 8;
 435                 // currently the remaining RTL languages are arabic_arabtex and hebrew
 436                 } else if (isRightToLeft() != prev.isRightToLeft()) {
 437                         if (isRightToLeft()) {
 438                                 os << "\\R{";
 439                                 count += 3;
 440                         } else {
 441                                 os << "\\L{";
 442                                 count += 3;
 443                         }
 444                 } else if (!language()->babel().empty()) {
 445                         string const tmp =
 446                                 subst(lyxrc.language_command_local,
 447                                       "$$lang", language()->babel());
 448                         os << from_ascii(tmp);
 449                         count += tmp.length();
 450                 } else {
 451                         os << '{';
 452                         count += 1;
 453                 }
 454         }
 455
 456         if (language()->encoding()->package() == Encoding::CJK) {
 457                 pair<bool, int> const c = switchEncoding(os, bparams,
 458                                 runparams, *(language()->encoding()));
 459                 if (c.first) {
 460                         open_encoding_ = true;
 461                         count += c.second;
 462                         runparams.encoding = language()->encoding();
 463                 }
 464         }
 465
 466         // When the current language is Hebrew, Arabic, or Farsi
 467         // the numbers are written Left-to-Right. ArabTeX package
 468         // reorders the number automatically but the packages used
 469         // for Hebrew and Farsi (Arabi) do not.
 470         if (bits_.number() == FONT_ON && prev.fontInfo().number() != FONT_ON
 471                 && (language()->lang() == "hebrew"
 472                         || language()->lang() == "farsi"
 473                         || language()->lang() == "arabic_arabi")) {
 474                 os << "{\\beginL ";
 475                 count += 9;
 476         }
 477
 478         FontInfo f = bits_;
 479         f.reduce(base.bits_);
 480
 481         if (f.family() != INHERIT_FAMILY) {
 482                 os << '\\'
 483                    << LaTeXFamilyNames[f.family()]
 484                    << '{';
 485                 count += strlen(LaTeXFamilyNames[f.family()]) + 2;
 486                 env = true; //We have opened a new environment
 487         }
 488         if (f.series() != INHERIT_SERIES) {
 489                 os << '\\'
 490                    << LaTeXSeriesNames[f.series()]
 491                    << '{';
 492                 count += strlen(LaTeXSeriesNames[f.series()]) + 2;
 493                 env = true; //We have opened a new environment
 494         }
 495         if (f.shape() != INHERIT_SHAPE) {
 496                 os << '\\'
 497                    << LaTeXShapeNames[f.shape()]
 498                    << '{';
 499                 count += strlen(LaTeXShapeNames[f.shape()]) + 2;
 500                 env = true; //We have opened a new environment
 501         }
 502         if (f.color() != Color_inherit && f.color() != Color_ignore) {
 503                 os << "\\textcolor{"
 504                    << from_ascii(lcolor.getLaTeXName(f.color()))
 505                    << "}{";
 506                 count += lcolor.getLaTeXName(f.color()).length() + 13;
 507                 env = true; //We have opened a new environment
 508         }
 509         // FIXME: uncomment this when we support background.
 510         /*
 511         if (f.background() != Color_inherit && f.background() != Color_ignore) {
 512                 os << "\\textcolor{"
 513                    << from_ascii(lcolor.getLaTeXName(f.background()))
 514                    << "}{";
 515                 count += lcolor.getLaTeXName(f.background()).length() + 13;
 516                 env = true; //We have opened a new environment
 517         }
 518         */
 519         if (f.emph() == FONT_ON) {
 520                 os << "\\emph{";
 521                 count += 6;
 522                 env = true; //We have opened a new environment
 523         }
 524         if (f.underbar() == FONT_ON) {
 525                 os << "\\underbar{";
 526                 count += 10;
 527                 env = true; //We have opened a new environment
 528         }
 529         // \noun{} is a LyX special macro
 530         if (f.noun() == FONT_ON) {
 531                 os << "\\noun{";
 532                 count += 6;
 533                 env = true; //We have opened a new environment
 534         }
 535         if (f.size() != FONT_SIZE_INHERIT) {
 536                 // If we didn't open an environment above, we open one here
 537                 if (!env) {
 538                         os << '{';
 539                         ++count;
 540                 }
 541                 os << '\\'
 542                    << LaTeXSizeNames[f.size()]
 543                    << ' ';
 544                 count += strlen(LaTeXSizeNames[f.size()]) + 2;
 545         }
 546         return count;
 547 }
 548
 549
 550 /// Writes ending block of LaTeX needed to close use of this font
 551 // Returns number of chars written
 552 // This one corresponds to latexWriteStartChanges(). (Asger)
 553 int Font::latexWriteEndChanges(odocstream & os, BufferParams const & bparams,
 554                                   OutputParams const & runparams,
 555                                   Font const & base,
 556                                   Font const & next,
 557                                   bool const & closeLanguage) const
 558 {
 559         int count = 0;
 560         bool env = false;
 561
 562         // reduce the current font to changes against the base
 563         // font (of the layout). We use a temporary for this to
 564         // avoid changing this font instance, as that would break
 565         FontInfo f = bits_;
 566         f.reduce(base.bits_);
 567
 568         if (f.family() != INHERIT_FAMILY) {
 569                 os << '}';
 570                 ++count;
 571                 env = true; // Size change need not bother about closing env.
 572         }
 573         if (f.series() != INHERIT_SERIES) {
 574                 os << '}';
 575                 ++count;
 576                 env = true; // Size change need not bother about closing env.
 577         }
 578         if (f.shape() != INHERIT_SHAPE) {
 579                 os << '}';
 580                 ++count;
 581                 env = true; // Size change need not bother about closing env.
 582         }
 583         if (f.color() != Color_inherit && f.color() != Color_ignore) {
 584                 os << '}';
 585                 ++count;
 586                 env = true; // Size change need not bother about closing env.
 587         }
 588         if (f.emph() == FONT_ON) {
 589                 os << '}';
 590                 ++count;
 591                 env = true; // Size change need not bother about closing env.
 592         }
 593         if (f.underbar() == FONT_ON) {
 594                 os << '}';
 595                 ++count;
 596                 env = true; // Size change need not bother about closing env.
 597         }
 598         if (f.noun() == FONT_ON) {
 599                 os << '}';
 600                 ++count;
 601                 env = true; // Size change need not bother about closing env.
 602         }
 603         if (f.size() != FONT_SIZE_INHERIT) {
 604                 // We only have to close if only size changed
 605                 if (!env) {
 606                         os << '}';
 607                         ++count;
 608                 }
 609         }
 610
 611         // When the current language is Hebrew, Arabic, or Farsi
 612         // the numbers are written Left-to-Right. ArabTeX package
 613         // reorders the number automatically but the packages used
 614         // for Hebrew and Farsi (Arabi) do not.
 615         if (bits_.number() == FONT_ON && next.fontInfo().number() != FONT_ON
 616                 && (language()->lang() == "hebrew"
 617                         || language()->lang() == "farsi"
 618                         || language()->lang() == "arabic_arabi")) {
 619                 os << "\\endL}";
 620                 count += 6;
 621         }
 622
 623         if (open_encoding_) {
 624                 // We need to close the encoding even if it does not change
 625                 // to do correct environment nesting
 626                 Encoding const * const ascii = encodings.fromLyXName("ascii");
 627                 pair<bool, int> const c = switchEncoding(os, bparams,
 628                                 runparams, *ascii);
 629                 LASSERT(c.first, /**/);
 630                 count += c.second;
 631                 runparams.encoding = ascii;
 632                 open_encoding_ = false;
 633         }
 634
 635         if (closeLanguage &&
 636                         language() != base.language() && language() != next.language()) {
 637                 os << '}';
 638                 ++count;
 639         }
 640
 641         return count;
 642 }
 643
 644
 645 string Font::toString(bool const toggle) const
 646 {
 647         string const lang = (language() == reset_language)
 648                 ? "reset" : language()->lang();
 649
 650         ostringstream os;
 651         os << "family " << bits_.family() << '\n'
 652            << "series " << bits_.series() << '\n'
 653            << "shape " << bits_.shape() << '\n'
 654            << "size " << bits_.size() << '\n'
 655            << "emph " << bits_.emph() << '\n'
 656            << "underbar " << bits_.underbar() << '\n'
 657            << "noun " << bits_.noun() << '\n'
 658            << "number " << bits_.number() << '\n'
 659            << "color " << bits_.color() << '\n'
 660            << "language " << lang << '\n'
 661            << "toggleall " << convert<string>(toggle);
 662         return os.str();
 663 }
 664
 665
 666 bool Font::fromString(string const & data, bool & toggle)
 667 {
 668         istringstream is(data);
 669         Lexer lex;
 670         lex.setStream(is);
 671
 672         int nset = 0;
 673         while (lex.isOK()) {
 674                 string token;
 675                 if (lex.next())
 676                         token = lex.getString();
 677
 678                 if (token.empty() || !lex.next())
 679                         break;
 680
 681                 if (token == "family") {
 682                         int const next = lex.getInteger();
 683                         bits_.setFamily(FontFamily(next));
 684
 685                 } else if (token == "series") {
 686                         int const next = lex.getInteger();
 687                         bits_.setSeries(FontSeries(next));
 688
 689                 } else if (token == "shape") {
 690                         int const next = lex.getInteger();
 691                         bits_.setShape(FontShape(next));
 692
 693                 } else if (token == "size") {
 694                         int const next = lex.getInteger();
 695                         bits_.setSize(FontSize(next));
 696
 697                 } else if (token == "emph" || token == "underbar" ||
 698                            token == "noun" || token == "number") {
 699
 700                         int const next = lex.getInteger();
 701                         FontState const misc = FontState(next);
 702
 703                         if (token == "emph")
 704                                 bits_.setEmph(misc);
 705                         else if (token == "underbar")
 706                                 bits_.setUnderbar(misc);
 707                         else if (token == "noun")
 708                                 bits_.setNoun(misc);
 709                         else if (token == "number")
 710                                 bits_.setNumber(misc);
 711
 712                 } else if (token == "color") {
 713                         int const next = lex.getInteger();
 714                         bits_.setColor(ColorCode(next));
 715
 716                 /**
 717                 } else if (token == "background") {
 718                         int const next = lex.getInteger();
 719                         bits_.setBackground(ColorCode(next));
 720                 */
 721
 722                 } else if (token == "language") {
 723                         string const next = lex.getString();
 724                         setLanguage(languages.getLanguage(next));
 725
 726                 } else if (token == "toggleall") {
 727                         toggle = lex.getBool();
 728
 729                 } else {
 730                         // Unrecognised token
 731                         break;
 732                 }
 733
 734                 ++nset;
 735         }
 736         return (nset > 0);
 737 }
 738
 739
 740 void Font::validate(LaTeXFeatures & features) const
 741 {
 742         BufferParams const & bparams = features.bufferParams();
 743         Language const * doc_language = bparams.language;
 744
 745         if (bits_.noun() == FONT_ON) {
 746                 LYXERR(Debug::LATEX, "font.noun: " << bits_.noun());
 747                 features.require("noun");
 748                 LYXERR(Debug::LATEX, "Noun enabled. Font: " << to_utf8(stateText(0)));
 749         }
 750         switch (bits_.color()) {
 751                 case Color_none:
 752                 case Color_inherit:
 753                 case Color_ignore:
 754                         // probably we should put here all interface colors used for
 755                         // font displaying! For now I just add this ones I know of (Jug)
 756                 case Color_latex:
 757                 case Color_notelabel:
 758                         break;
 759                 default:
 760                         features.require("color");
 761                         LYXERR(Debug::LATEX, "Color enabled. Font: " << to_utf8(stateText(0)));
 762         }
 763
 764         // FIXME: Do something for background and soul package?
 765
 766         if (lang_->babel() != doc_language->babel() &&
 767                 lang_ != ignore_language &&
 768                 lang_ != latex_language)
 769         {
 770                 features.useLanguage(lang_);
 771                 LYXERR(Debug::LATEX, "Found language " << lang_->lang());
 772         }
 773 }
 774
 775
 776 ostream & operator<<(ostream & os, FontState fms)
 777 {
 778         return os << int(fms);
 779 }
 780
 781
 782 ostream & operator<<(ostream & os, FontInfo const & f)
 783 {
 784         return os << "font:"
 785                 << " family " << f.family()
 786                 << " series " << f.series()
 787                 << " shape " << f.shape()
 788                 << " size " << f.size()
 789                 << " color " << f.color()
 790                 // FIXME: uncomment this when we support background.
 791                 //<< " background " << f.background()
 792                 << " emph " << f.emph()
 793                 << " underbar " << f.underbar()
 794                 << " noun " << f.noun()
 795                 << " number " << f.number();
 796 }
 797
 798
 799 ostream & operator<<(ostream & os, Font const & font)
 800 {
 801         return os << font.bits_
 802                 << " lang: " << (font.lang_ ? font.lang_->lang() : 0);
 803 }
 804
 805
 806 } // namespace lyx