src/insets/insetlatexaccent.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *          Copyright 1995 Matthias Ettrich
   7  *          Copyright 1995-1999 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #ifdef __GNUG__
  14 #pragma implementation
  15 #endif
  16
  17 #include "insetlatexaccent.h"
  18 #include "debug.h"
  19 #include "lyxrc.h"
  20 #include "lyxdraw.h"
  21 #include "support/lstrings.h"
  22
  23 extern LyXRC * lyxrc;
  24
  25 /* LatexAccent. Proper handling of accented characters */
  26 /* This part is done by Ivan Schreter, schreter@ccsun.tuke.sk */
  27 /* Later modified by Lars G. Bjonnes, larsbj@ifi.uio.no */
  28
  29 InsetLatexAccent::InsetLatexAccent()
  30 {
  31         candisp = false;
  32 }
  33
  34
  35 InsetLatexAccent::InsetLatexAccent(InsetLatexAccent const & other)
  36     : contents(other.contents),
  37       candisp(other.candisp),
  38       modtype(other.modtype),
  39       remdot(other.remdot),
  40       plusasc(other.plusasc),
  41       plusdesc(other.plusdesc),
  42       ic(other.ic)
  43 {}
  44
  45
  46 InsetLatexAccent::InsetLatexAccent(string const & string)
  47         : contents(string)
  48 {
  49         checkContents();
  50 }
  51
  52
  53 void InsetLatexAccent::checkContents()
  54         // check, if we know the modifier and can display it ok on screen
  55 {
  56         candisp = false;
  57
  58         if (contents.empty() || contents.length() < 2) return;
  59
  60         // REMOVE IN 0.13
  61         // Dirty Hack for backward compability. remove in 0.13 (Lgb)
  62         contents = frontStrip(strip(contents));
  63         if (!contains(contents, "{") && !contains(contents, "}")) {
  64                 if (contents.length() == 2) {
  65                         string tmp;
  66                         tmp += contents[0];
  67                         tmp += contents[1];
  68                         tmp += "{}";
  69                         contents = tmp;
  70                 } else if (contents.length() == 3) {
  71                         string tmp;
  72                         tmp += contents[0];
  73                         tmp += contents[1];
  74                         tmp += '{';
  75                         tmp += contents[2];
  76                         tmp += '}';
  77                         contents = tmp;
  78                 } else if (contents.length() == 4 && contents[2] == ' ') {
  79                         string tmp;
  80                         tmp += contents[0];
  81                         tmp += contents[1];
  82                         tmp += '{';
  83                         tmp += contents[3];
  84                         tmp += '}';
  85                         contents = tmp;
  86                 } else if  (contents.length() == 4 && contents[2] == '\\'
  87                             && (contents[3] == 'i' || contents[3] == 'j')) {
  88                         string tmp;
  89                         tmp += contents[0];
  90                         tmp += contents[1];
  91                         tmp += '{';
  92                         tmp += contents[2];
  93                         tmp += contents[3];
  94                         tmp += '}';
  95                         contents = tmp;
  96                 }
  97         }
  98         if (contents[0] != '\\') return; // demand that first char is a '\\'
  99
 100         lyxerr.debug() << "Decode: " << contents << endl;
 101
 102         remdot = false; plusasc = false; plusdesc = false;
 103
 104         switch (contents[1]) { // second char should be one of these
 105         case '\'':  // acute
 106                 modtype = ACUTE;    // acute
 107                 plusasc = true;    // at the top of character
 108                 break;
 109         case '`':   // grave
 110                 modtype = GRAVE;    // grave
 111                 plusasc = true;    // at the top
 112                 break;
 113         case '=':   // macron
 114                 modtype = MACRON;    // macron
 115                 plusasc = true;    // at the top
 116                 break;
 117         case '~':   // tilde
 118                 modtype = TILDE;    // tilde
 119                 plusasc = true;    // at the top
 120                 break;
 121         case 'b':   // underbar
 122                 modtype = UNDERBAR;    // underbar
 123                 plusdesc = true;   // at the bottom
 124                 break;
 125         case 'c':   // cedilla
 126                 modtype = CEDILLA;    // cedilla
 127                 plusdesc = true;   // at the bottom
 128                 break;
 129         case 'd':   // underdot
 130                 modtype = UNDERDOT;    // underdot
 131                 plusdesc = true;   // at the bottom
 132                 break;
 133         case 'r':   // circle
 134                 modtype = CIRCLE;    // circle
 135                 plusasc = true;    // at the top
 136                 break;
 137         case 't':   // tie
 138                 modtype = TIE;    // tie
 139                 plusasc = true;    // at the top
 140                 break;
 141         case 'u':   // breve
 142                 modtype = BREVE;    // breve
 143                 plusasc = true;    // at the top
 144                 break;
 145         case 'v':   // caron
 146                 modtype = CARON;   // caron
 147                 plusasc = true;    // at the top
 148                 break;
 149         case 'q':   // special caron
 150                 modtype = SPECIAL_CARON;   // special caron
 151                 plusasc = true;    // at the top
 152                 break;
 153         case 'H':   // hungarian umlaut
 154                 modtype = HUNGARIAN_UMLAUT;   // hungarian umlaut
 155                 plusasc = true;    // at the top
 156                 break;
 157         case '"':   // umlaut
 158                 modtype = UMLAUT;   // umlaut
 159                 plusasc = true;    // at the top
 160                 break;
 161         case '.':   // dot
 162                 modtype = DOT;   // dot
 163                 plusasc = true;    // at the top
 164                 break;
 165         case '^':   // circumflex
 166                 modtype = CIRCUMFLEX;   // circumflex
 167                 plusasc = true;    // at the top
 168                 break;
 169         case 'k':   // ogonek
 170                 modtype = OGONEK;  // ogonek
 171                 plusdesc = true;
 172                 break;
 173         case 'i': // dot-less-i
 174                 modtype = DOT_LESS_I;  // dot-less-i
 175                 plusasc = true; // at the top (not really needed)
 176                 remdot = true;
 177                 break;
 178         case 'j': // dot-less-j
 179                 modtype = DOT_LESS_J; // dot-less-j
 180                 plusasc = true; // at the top (not really needed)
 181                 remdot = true;
 182                 break;
 183         case 'l': // lslash
 184                 modtype = lSLASH;
 185                 plusasc = true; // at the top (not really needed)
 186                 break;
 187         case 'L': // lslash
 188                 modtype = LSLASH;
 189                 plusasc = true; // at the top (not really needed)
 190                 break;
 191         default:
 192                 printf ("Default\n");
 193                 // unknow accent (or something else)
 194                 return;
 195         }
 196
 197         // we demand that third char is a '{' (Lgb)
 198         if (contents[2] != '{') return;
 199
 200         // special clause for \i{}, \j{} \l{} and \L{}
 201         if ((modtype == DOT_LESS_I || modtype == DOT_LESS_J
 202                 || modtype == lSLASH || modtype == LSLASH)
 203             && contents[3] == '}' ) {
 204                 switch (modtype) {
 205                 case DOT_LESS_I: ic = 'i'; break;
 206                 case DOT_LESS_J: ic = 'j'; break;
 207                 case lSLASH:     ic = 'l'; break;
 208                 case LSLASH:     ic = 'L'; break;
 209                 default:
 210                         // if this happens something is really wrong
 211                         lyxerr << "InsetLaTexAccent: weird error." << endl;
 212                         break;
 213                 }
 214                 //ic = (modtype == DOT_LESS_J ? 'j' : 'i');
 215                 lyxerr.debug() << "Contents: [" << contents << "]"
 216                                << ", ic: " << ic
 217                                << ", top: " << plusasc
 218                                << ", bot: " << plusdesc
 219                                << ", dot: " << remdot
 220                                << ", mod: " << modtype << endl;
 221         // Special case for space
 222         } else if (contents[3] == '}') {
 223                 ic = ' ';
 224         } else {
 225                 int i = 3;
 226
 227                 // now get the char
 228                 ic = contents[3]; // i will always be 3 here
 229
 230                 // ic should now be a alfa-char or '\\'
 231                 if (ic == '\\') {
 232                         ic = contents[++i]; // will only allow \<foo>{\i} and \<foo>{\j}
 233                         if (ic == 'i' || ic == 'j')
 234                                 remdot = true;
 235                         else
 236                                 return;
 237                 } else if ( (ic == 'i'|| ic == 'j') && contents[4] == '}') {
 238                     // Do a rewrite: \<foo>{i} --> \<foo>{\i}
 239                     string temp = contents;
 240                     temp.erase(3, string::npos);
 241                     temp += '\\';
 242                     temp += char(ic);
 243                     for(string::size_type j = 4; j < contents.length(); ++j)
 244                                 temp+= contents[j];
 245                     contents= temp;
 246                     ++i;
 247                         remdot = true;
 248                 }
 249
 250                 // demand a '}' at the end
 251                 if (contents[++i] != '}' && contents[++i]) return;
 252
 253                 // fine, the char is properly decoded now (hopefully)
 254                 lyxerr.debug() << "Contents: [" << contents << "]"
 255                                << ", ic: " << ic
 256                                << ", top: " << plusasc
 257                                << ", bot: " << plusdesc
 258                                << ", dot: " << remdot
 259                                << ", mod: " << modtype << endl;
 260         }
 261         candisp = true;
 262 }
 263
 264
 265 int InsetLatexAccent::Ascent(LyXFont const & font) const
 266 {
 267         int max;
 268         if (candisp) {
 269                 if (ic == ' ')
 270                         max = font.ascent('a');
 271                 else
 272                         max = font.ascent(ic);
 273                 if (plusasc)
 274                         max += (font.maxAscent() + 3) / 3;
 275         } else
 276                 max = font.maxAscent() + 4;
 277         return max;
 278 }
 279
 280
 281 int InsetLatexAccent::Descent(LyXFont const & font) const
 282 {
 283         int max;
 284         if (candisp) {
 285                 if (ic == ' ')
 286                         max = font.descent('a');
 287                 else
 288                         max = font.descent(ic);
 289                 if (plusdesc)
 290                         max += 3;
 291         } else
 292                 max = font.maxDescent() + 4;
 293         return max;
 294 }
 295
 296
 297 int InsetLatexAccent::Width(LyXFont const & font) const
 298 {
 299         if (candisp)
 300                 return font.textWidth(&ic, 1);
 301         else
 302                 return font.stringWidth(contents) + 4;
 303 }
 304
 305
 306 bool InsetLatexAccent::DisplayISO8859_9(LyXFont font,
 307                             LyXScreen & scr,
 308                             int baseline,
 309                             float & x)
 310 {
 311         unsigned char tmpic = ic;
 312
 313         switch (modtype) {
 314         case CEDILLA:
 315         {
 316                 if (ic == 'c') tmpic = 0xe7;
 317                 if (ic == 'C') tmpic = 0xc7;
 318                 if (ic == 's') tmpic = 0xfe;
 319                 if (ic == 'S') tmpic = 0xde;
 320                 break;
 321         }
 322         case BREVE:
 323         {       if (ic == 'g') tmpic = 0xf0;
 324                 if (ic == 'G') tmpic = 0xd0;
 325                 break;
 326         }
 327         case UMLAUT:
 328         {
 329                 if (ic == 'o') tmpic = 0xf6;
 330                 if (ic == 'O') tmpic = 0xd6;
 331                 if (ic == 'u') tmpic = 0xfc;
 332                 if (ic == 'U') tmpic = 0xdc;
 333                 break;
 334         }
 335         case DOT:        if (ic == 'I') tmpic = 0xdd; break;
 336         case DOT_LESS_I: tmpic = 0xfd; break;
 337         default:         return false;
 338         }
 339         if (tmpic != ic) {
 340                 char ch = char(tmpic);
 341                 scr.drawText(font, &ch, 1, baseline, int(x));
 342                 x += Width (font);
 343                 return true;
 344         }
 345         else
 346                 return false;
 347 }
 348
 349
 350 void InsetLatexAccent::Draw(LyXFont font,
 351                             LyXScreen & scr,
 352                             int baseline,
 353                             float & x)
 354 {
 355         if (lyxrc->font_norm == "iso8859-9")
 356                 if (DisplayISO8859_9 (font, scr, baseline, x))
 357                         return;
 358
 359         /* draw it! */
 360
 361         if (candisp) {
 362                 int asc = Ascent(font);
 363                 int desc = Descent(font);
 364                 int wid = Width(font);
 365                 float x2 = x + float(wid/2);
 366                 float hg35;
 367                 int hg, y;
 368                 if (plusasc) {
 369                         // mark at the top
 370                         hg = font.maxDescent();
 371                         y = baseline - asc;
 372
 373                         if (font.shape() == LyXFont::ITALIC_SHAPE) x2 += (4*hg)/5; // italic
 374                 } else {
 375                         // at the bottom
 376                         hg = desc;
 377                         y = baseline;
 378                 }
 379
 380                 hg35 = float(hg*3)/5;
 381
 382                 // display with proper accent mark
 383                 // first the letter
 384                 scr.drawText(font, &ic, 1, baseline, int(x));
 385
 386                 GC pgc = GetAccentGC(font, (hg+3)/5);
 387
 388                 if (remdot) {
 389                         int tmpvar = baseline - font.ascent('i');
 390                         float tmpx = 0;
 391                         if (font.shape() == LyXFont::ITALIC_SHAPE) tmpx += (8*hg)/10; // italic
 392                         lyxerr.debug() << "Removing dot." << endl;
 393                         // remove the dot first
 394                         scr.fillRectangle(gc_clear, int(x + tmpx),
 395                                           tmpvar, wid,
 396                                           font.ascent('i') -
 397                                           font.ascent('x')-1);
 398
 399                 }
 400                 // now the rest - draw within (x, y, x+wid, y+hg)
 401                 switch (modtype) {
 402                 case ACUTE:     // acute
 403                 {
 404                         scr.drawLine(pgc, int(x2), int(y+hg35),
 405                                      int(x2+hg35), y);
 406                         break;
 407                 }
 408                 case GRAVE:     // grave
 409                 {
 410                         scr.drawLine(pgc, int(x2), int(y+hg35),
 411                                      int(x2-hg35), y);
 412                         break;
 413                 }
 414                 case MACRON:     // macron
 415                 {
 416                         scr.drawLine(pgc,
 417                                      int(x2-(3*wid/7)), int(y+(hg/2) + hg35),
 418                                      int(x2+(3*wid/7)), int(y+(hg/2) + hg35));
 419                         break;
 420                 }
 421                 case TILDE:     // tilde
 422                 {
 423                         if (hg35 > 2) --hg35;
 424                         x2 += (hg35/2);
 425                         XPoint p[4];
 426                         p[0].x = int(x2 - 2*hg35); p[0].y = int(y + hg);
 427                         p[1].x = int(x2 - hg35);   p[1].y = int(y + hg35);
 428                         p[2].x = int(x2);          p[2].y = int(y + hg);
 429                         p[3].x = int(x2 + hg35);   p[3].y = int(y + hg35);
 430                         scr.drawLines(pgc, p, 4);
 431                         break;
 432                 }
 433                 case UNDERBAR:     // underbar
 434                 {
 435                         scr.drawLine(pgc,
 436                                      int(x2-(3*wid/7)), y+(hg/2),
 437                                      int(x2+(3*wid/7)), y+(hg/2));
 438                         break;
 439                 }
 440                 case CEDILLA:     // cedilla
 441                 {
 442                         XPoint p[4];
 443                         p[0].x = int(x2);          p[0].y = y;
 444                         p[1].x = int(x2);          p[1].y = y + (hg/3);
 445                         p[2].x = int(x2 + (hg/3)); p[2].y = y + (hg/2);
 446                         p[3].x = int(x2 - (hg/4)); p[3].y = y + hg;
 447                         scr.drawLines(pgc, p, 4);
 448                         break;
 449                 }
 450                 case UNDERDOT:     // underdot
 451                 case DOT:    // dot
 452                 {
 453                         scr.drawArc(pgc, int(x2), y+(hg/2),
 454                                     1, 1, 0, 360*64);
 455                         break;
 456                 }
 457                 case CIRCLE:     // circle
 458                 {
 459                         scr.drawArc(pgc, int(x2-(hg/2)), y, hg, hg, 0,
 460                                     360*64);
 461                         break;
 462                 }
 463                 case TIE:     // tie
 464                 {
 465                         scr.drawArc(pgc,
 466                                     int(x2), y+(hg/4),
 467                                     hg, hg, 0, 11519);
 468                         break;
 469                 }
 470                 case BREVE:     // breve
 471                 {
 472                         scr.drawArc(pgc,
 473                                     int(x2-(hg/2)), y-(hg/4),
 474                                     hg, hg, 0, -11519);
 475                         break;
 476                 }
 477                 case CARON:    // caron
 478                 {
 479                         XPoint p[3];
 480                         p[0].x = int(x2 - hg35); p[0].y = y;
 481                         p[1].x = int(x2);        p[1].y = int(y+hg35);
 482                         p[2].x = int(x2 + hg35); p[2].y = y;
 483                         scr.drawLines(pgc, p, 3);
 484                         break;
 485                 }
 486                 case SPECIAL_CARON:    // special caron
 487                 {
 488                         switch (ic) {
 489                         case 'L': wid = 4*wid/5; break;
 490                         case 't': y -= int(hg35/2); break;
 491                         }
 492                         XPoint p[3];
 493                         p[0].x = int(x+wid);          p[0].y = int(y+hg35+hg);
 494                         p[1].x = int(x+wid+(hg35/2)); p[1].y = int(y+ hg+(hg35/2));
 495                         p[2].x = int(x+wid+(hg35/2)); p[2].y = y + hg;
 496                         scr.drawLines(pgc, p, 3);
 497                         break;
 498                 }
 499                 case HUNGARIAN_UMLAUT:    // hung. umlaut
 500                 {
 501                         XSegment s[2];
 502                         s[0].x1= int(x2-(hg/2));      s[0].y1 = int(y + hg35);
 503                         s[0].x2= int(x2+hg35-(hg/2)); s[0].y2 = y;
 504                         s[1].x1= int(x2+(hg/2));      s[1].y1 = int(y + hg35);
 505                         s[1].x2= int(x2+hg35+(hg/2)); s[1].y2 = y;
 506
 507                         scr.drawSegments(pgc, s, 2);
 508                         break;
 509                 }
 510                 case UMLAUT:    // umlaut
 511                 {
 512                         int tmpadd = y;
 513                         tmpadd += (remdot) ? ((19*hg)/10) : ((20*hg)/27); // if (remdot) -> i or j
 514                         int rad = ((hg*4)/8);
 515                         if (rad <= 1) {
 516                                 scr.drawPoint(pgc, int(x2-((4*hg)/7)), tmpadd);
 517                                 scr.drawPoint(pgc, int(x2+((4*hg)/7)), tmpadd);
 518                         } else {
 519                                 scr.drawArc(pgc, int(x2-((2*hg)/4)), tmpadd,
 520                                             rad-1, rad-1, 0, 360*64);
 521                                 scr.drawArc(pgc, int(x2+((2*hg)/4)), tmpadd,
 522                                             rad-1, rad-1, 0, 360*64);
 523                         }
 524                         break;
 525                 }
 526                 case CIRCUMFLEX:    // circumflex
 527                 {
 528                         XPoint p[3];
 529                         p[0].x = int(x2 - hg35); p[0].y = y + hg;
 530                         p[1].x = int(x2);        p[1].y = int(y + hg35);
 531                         p[2].x = int(x2 + hg35); p[2].y = y + hg;
 532                         scr.drawLines(pgc, p, 3);
 533                         break;
 534                 }
 535                 case OGONEK:    // ogonek
 536                 {
 537                         // this does probably not look like an ogonek, so
 538                         // it should certainly be refined
 539                         XPoint p[4];
 540                         p[0].x = int(x2);          p[0].y = y;
 541                         p[1].x = int(x2);          p[1].y = y + (hg/3);
 542                         p[2].x = int(x2 - (hg/3)); p[2].y = y + (hg/2);
 543                         p[3].x = int(x2 + (hg/4)); p[3].y = y + hg;
 544                         scr.drawLines(pgc, p, 4);
 545                         break;
 546                 }
 547                 case lSLASH:
 548                 case LSLASH:
 549                 {
 550                         XPoint p[2];
 551                         p[0].x = int(x);                p[0].y = y+3*hg;
 552                         p[1].x = int(x+float(wid)*.75); p[1].y = y+hg;
 553                         scr.drawLines(pgc, p, 2);
 554                         break;
 555                 }
 556                 case DOT_LESS_I: // dotless-i
 557                 case DOT_LESS_J: // dotless-j
 558                 {
 559                         // nothing to do for these
 560                         break;
 561                 }
 562                 }
 563         } else {
 564                 scr.fillRectangle(gc_lighted,
 565                                   int(x+1), baseline - Ascent(font)+1,
 566                                   Width(font)-2,
 567                                   Ascent(font)+Descent(font)-2);
 568
 569                 scr.drawRectangle(gc_lighted,
 570                                   int(x), baseline - Ascent(font),
 571                                   Width(font)-1,
 572                                   Ascent(font)+Descent(font)-1);
 573                 scr.drawString(font, contents, baseline, int(x+2));
 574         }
 575         x +=  Width(font);
 576 }
 577
 578
 579 void InsetLatexAccent::Write(ostream & os)
 580 {
 581         os << "\\i " << contents << "\n";
 582 }
 583
 584
 585 void InsetLatexAccent::Read(LyXLex & lex)
 586 {
 587         lex.EatLine();
 588         contents = lex.GetString();
 589         checkContents();
 590 }
 591
 592
 593 int InsetLatexAccent::Latex(ostream & os, signed char /*fragile*/)
 594 {
 595         os << contents;
 596         return 0;
 597 }
 598
 599
 600 int InsetLatexAccent::Latex(string & file, signed char /*fragile*/)
 601 {
 602         file += contents;
 603         return 0;
 604 }
 605
 606
 607 int InsetLatexAccent::Linuxdoc(string & file)
 608 {
 609         file += contents;
 610         return 0;
 611 }
 612
 613
 614 int InsetLatexAccent::DocBook(string & file)
 615 {
 616         file += contents;
 617         return 0;
 618 }
 619
 620
 621 bool InsetLatexAccent::Deletable() const
 622 {
 623         return true;
 624 }
 625
 626
 627 bool InsetLatexAccent::DirectWrite() const
 628 {
 629         return true;
 630 }
 631
 632
 633 Inset * InsetLatexAccent::Clone() const
 634 {
 635         return new InsetLatexAccent(contents);
 636 }
 637
 638
 639 Inset::Code InsetLatexAccent::LyxCode() const
 640 {
 641         return Inset::ACCENT_CODE;
 642 }
 643
 644
 645 ostream & operator<<(ostream & o, InsetLatexAccent::ACCENT_TYPES at)
 646 {
 647         return o << int(at);
 648 }