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 "error.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 InsetLatexAccent::~InsetLatexAccent()
  54 {
  55 }
  56
  57
  58 void InsetLatexAccent::checkContents()
  59         // check, if we know the modifier and can display it ok on screen
  60 {
  61         candisp = false;
  62
  63         if (contents.empty() || contents.length()<2) return;
  64
  65         // REMOVE IN 0.13
  66         // Dirty Hack for backward compability. remove in 0.13 (Lgb)
  67         contents = frontStrip(strip(contents));
  68         if (!contains(contents, "{") && !contains(contents, "}")) {
  69                 if (contents.length() == 2) {
  70                         string tmp;
  71                         tmp += contents[0];
  72                         tmp += contents[1];
  73                         tmp += "{}";
  74                         contents = tmp;
  75                 } else if (contents.length() == 3) {
  76                         string tmp;
  77                         tmp += contents[0];
  78                         tmp += contents[1];
  79                         tmp += '{';
  80                         tmp += contents[2];
  81                         tmp += '}';
  82                         contents = tmp;
  83                 } else if (contents.length()==4 && contents[2] == ' ') {
  84                         string tmp;
  85                         tmp += contents[0];
  86                         tmp += contents[1];
  87                         tmp += '{';
  88                         tmp += contents[3];
  89                         tmp += '}';
  90                         contents = tmp;
  91                 } else if  (contents.length()==4 && contents[2] == '\\'
  92                             && (contents[3]== 'i' || contents[3]== 'j')) {
  93                         string tmp;
  94                         tmp += contents[0];
  95                         tmp += contents[1];
  96                         tmp += '{';
  97                         tmp += contents[2];
  98                         tmp += contents[3];
  99                         tmp += '}';
 100                         contents = tmp;
 101                 }
 102         }
 103         if (contents[0] != '\\') return; // demand that first char is a '\\'
 104
 105         lyxerr.debug("Decode: " + contents);
 106
 107         remdot = false; plusasc = false; plusdesc = false;
 108
 109         switch (contents[1]) { // second char should be one of these
 110         case '\'':  // acute
 111                 modtype = ACUTE;    // acute
 112                 plusasc = true;    // at the top of character
 113                 break;
 114         case '`':   // grave
 115                 modtype = GRAVE;    // grave
 116                 plusasc = true;    // at the top
 117                 break;
 118         case '=':   // macron
 119                 modtype = MACRON;    // macron
 120                 plusasc = true;    // at the top
 121                 break;
 122         case '~':   // tilde
 123                 modtype = TILDE;    // tilde
 124                 plusasc = true;    // at the top
 125                 break;
 126         case 'b':   // underbar
 127                 modtype = UNDERBAR;    // underbar
 128                 plusdesc = true;   // at the bottom
 129                 break;
 130         case 'c':   // cedilla
 131                 modtype = CEDILLA;    // cedilla
 132                 plusdesc = true;   // at the bottom
 133                 break;
 134         case 'd':   // underdot
 135                 modtype = UNDERDOT;    // underdot
 136                 plusdesc = true;   // at the bottom
 137                 break;
 138         case 'r':   // circle
 139                 modtype = CIRCLE;    // circle
 140                 plusasc = true;    // at the top
 141                 break;
 142         case 't':   // tie
 143                 modtype = TIE;    // tie
 144                 plusasc = true;    // at the top
 145                 break;
 146         case 'u':   // breve
 147                 modtype = BREVE;    // breve
 148                 plusasc = true;    // at the top
 149                 break;
 150         case 'v':   // caron
 151                 modtype = CARON;   // caron
 152                 plusasc = true;    // at the top
 153                 break;
 154         case 'q':   // special caron
 155                 modtype = SPECIAL_CARON;   // special caron
 156                 plusasc = true;    // at the top
 157                 break;
 158         case 'H':   // hungarian umlaut
 159                 modtype = HUNGARIAN_UMLAUT;   // hungarian umlaut
 160                 plusasc = true;    // at the top
 161                 break;
 162         case '"':   // umlaut
 163                 modtype = UMLAUT;   // umlaut
 164                 plusasc = true;    // at the top
 165                 break;
 166         case '.':   // dot
 167                 modtype = DOT;   // dot
 168                 plusasc = true;    // at the top
 169                 break;
 170         case '^':   // circumflex
 171                 modtype = CIRCUMFLEX;   // circumflex
 172                 plusasc = true;    // at the top
 173                 break;
 174         case 'k':   // ogonek
 175                 modtype = OGONEK;  // ogonek
 176                 plusdesc = true;
 177                 break;
 178         case 'i': // dot-less-i
 179                 modtype = DOT_LESS_I;  // dot-less-i
 180                 plusasc = true; // at the top (not really needed)
 181                 remdot = true;
 182                 break;
 183         case 'j': // dot-less-j
 184                 modtype = DOT_LESS_J; // dot-less-j
 185                 plusasc = true; // at the top (not really needed)
 186                 remdot = true;
 187                 break;
 188         case 'l': // lslash
 189                 modtype = lSLASH;
 190                 plusasc = true; // at the top (not really needed)
 191                 break;
 192         case 'L': // lslash
 193                 modtype = LSLASH;
 194                 plusasc = true; // at the top (not really needed)
 195                 break;
 196         default:
 197                 printf ("Default\n");
 198                 // unknow accent (or something else)
 199                 return;
 200         }
 201
 202         // we demand that third char is a '{' (Lgb)
 203         if (contents[2] != '{') return;
 204
 205         // special clause for \i{}, \j{} \l{} and \L{}
 206         if ((modtype == DOT_LESS_I || modtype == DOT_LESS_J
 207                 || modtype == lSLASH || modtype == LSLASH)
 208             && contents[3] == '}' ) {
 209                 switch (modtype) {
 210                 case DOT_LESS_I: ic = 'i'; break;
 211                 case DOT_LESS_J: ic = 'j'; break;
 212                 case lSLASH:     ic = 'l'; break;
 213                 case LSLASH:     ic = 'L'; break;
 214                 default:
 215                         // if this happens something is really wrong
 216                         lyxerr.print("InsetLaTexAccent: weird error.");
 217                         break;
 218                 }
 219                 //ic = (modtype == DOT_LESS_J ? 'j' : 'i');
 220                 lyxerr.debug("Contents: [" + contents + "], ic: " + ic
 221                              + ", top: " + tostr(plusasc)
 222                              + ", bot: " + tostr(plusdesc)
 223                              + ", dot: " + tostr(remdot)
 224                              + ", mod: " + tostr(modtype));
 225         // Special case for space
 226         } else if (contents[3] == '}') {
 227                 ic = ' ';
 228         } else {
 229                 int i = 3;
 230
 231                 // now get the char
 232                 ic = contents[3]; // i will always be 3 here
 233
 234                 // ic should now be a alfa-char or '\\'
 235                 if (ic == '\\') {
 236                         ic = contents[++i]; // will only allow \<foo>{\i} and \<foo>{\j}
 237                         if (ic == 'i' || ic == 'j')
 238                                 remdot = true;
 239                         else
 240                                 return;
 241                 } else if ( (ic=='i'|| ic=='j') && contents[4]=='}') {
 242                     // Do a rewrite: \<foo>{i} --> \<foo>{\i}
 243                     string temp=contents;
 244                     temp.erase(3, string::npos);
 245                     temp+='\\';
 246                         temp+=char(ic);
 247                     for(string::size_type j = 4; j < contents.length(); ++j)
 248                                 temp+=contents[j];
 249                     contents=temp;
 250                     i++;
 251                         remdot=true;
 252                 }
 253
 254                 // demand a '}' at the end
 255                 if (contents[++i] != '}' && contents[++i]) return;
 256
 257                 // fine, the char is properly decoded now (hopefully)
 258                 lyxerr.debug("Contents: [" + contents + "], ic: " + ic
 259                              + ", top: " + tostr(plusasc)
 260                              + ", bot: " + tostr(plusdesc)
 261                              + ", dot: " + tostr(remdot)
 262                              + ", mod: " + tostr(modtype));
 263         }
 264         candisp = true;
 265 }
 266
 267
 268 int InsetLatexAccent::Ascent(LyXFont const &font) const
 269 {
 270         int max;
 271         if (candisp) {
 272                 if (ic == ' ')
 273                         max = font.ascent('a');
 274                 else
 275                         max = font.ascent(ic);
 276                 if (plusasc)
 277                         max += (font.maxAscent()+3) / 3;
 278         } else
 279                 max = font.maxAscent()+4;
 280         return max;
 281 }
 282
 283
 284 int InsetLatexAccent::Descent(LyXFont const &font) const
 285 {
 286         int max;
 287         if (candisp) {
 288                 if (ic==' ')
 289                         max = font.descent('a');
 290                 else
 291                         max = font.descent(ic);
 292                 if (plusdesc)
 293                         max += 3;
 294         } else
 295                 max = font.maxDescent() + 4;
 296         return max;
 297 }
 298
 299
 300 int InsetLatexAccent::Width(LyXFont const &font) const
 301 {
 302         if (candisp)
 303                 return font.textWidth(&ic, 1);
 304         else
 305                 return font.stringWidth(contents) + 4;
 306 }
 307
 308
 309
 310 bool InsetLatexAccent::DisplayISO8859_9(LyXFont font,
 311                             LyXScreen &scr,
 312                             int baseline,
 313                             float &x)
 314 {
 315         unsigned char tmpic = ic;
 316
 317         switch (modtype) {
 318         case CEDILLA:
 319         {
 320                 if (ic == 'c') tmpic = 0xe7;
 321                 if (ic == 'C') tmpic = 0xc7;
 322                 if (ic == 's') tmpic = 0xfe;
 323                 if (ic == 'S') tmpic = 0xde;
 324                 break;
 325         }
 326         case BREVE:
 327         {       if (ic == 'g') tmpic = 0xf0;
 328                 if (ic == 'G') tmpic = 0xd0;
 329                 break;
 330         }
 331         case UMLAUT:
 332         {
 333                 if (ic == 'o') tmpic = 0xf6;
 334                 if (ic == 'O') tmpic = 0xd6;
 335                 if (ic == 'u') tmpic = 0xfc;
 336                 if (ic == 'U') tmpic = 0xdc;
 337                 break;
 338         }
 339         case DOT:        if (ic == 'I') tmpic = 0xdd; break;
 340         case DOT_LESS_I: tmpic = 0xfd; break;
 341         default:         return false;
 342         }
 343         if (tmpic != ic) {
 344                 char ch = char(tmpic);
 345                 scr.drawText(font, &ch, 1, baseline, int(x));
 346                 x += Width (font);
 347                 return true;
 348         }
 349         else
 350                 return false;
 351 }
 352
 353
 354 void InsetLatexAccent::Draw(LyXFont font,
 355                             LyXScreen &scr,
 356                             int baseline,
 357                             float &x)
 358 {
 359         if (lyxrc->font_norm=="iso8859-9")
 360                 if (DisplayISO8859_9 (font, scr, baseline, x))
 361                         return;
 362
 363         /* draw it! */
 364
 365         if (candisp) {
 366                 int asc = Ascent(font);
 367                 int desc = Descent(font);
 368                 int wid = Width(font);
 369                 float x2 = x+(float(wid)/2);
 370                 float hg35;
 371                 int hg, y;
 372                 if (plusasc) {
 373                         // mark at the top
 374                         hg = font.maxDescent();
 375                         y = baseline - asc;
 376
 377                         if (font.shape() == LyXFont::ITALIC_SHAPE) x2 += (4*hg)/5; // italic
 378                 } else {
 379                         // at the bottom
 380                         hg = desc;
 381                         y = baseline;
 382                 }
 383
 384                 hg35 = float(hg*3)/5;
 385
 386                 // display with proper accent mark
 387                 // first the letter
 388                 scr.drawText(font, &ic, 1, baseline, int(x));
 389
 390                 GC pgc = GetAccentGC(font, (hg+3)/5);
 391
 392                 if (remdot) {
 393                         int tmpvar = baseline - font.ascent('i');
 394                         float tmpx = 0;
 395                         if (font.shape() == LyXFont::ITALIC_SHAPE) tmpx += (8*hg)/10; // italic
 396                         lyxerr.debug("Removing dot.", Error::ANY);
 397                         // remove the dot first
 398                         scr.fillRectangle(gc_clear, int(x + tmpx),
 399                                           tmpvar, wid,
 400                                           font.ascent('i') -
 401                                           font.ascent('x')-1);
 402
 403                 }
 404                 // now the rest - draw within (x,y, x+wid, y+hg)
 405                 switch (modtype) {
 406                 case ACUTE:     // acute
 407                 {
 408                         scr.drawLine(pgc, int(x2), int(y+hg35),
 409                                      int(x2+hg35), y);
 410                         break;
 411                 }
 412                 case GRAVE:     // grave
 413                 {
 414                         scr.drawLine(pgc,int(x2), int(y+hg35),
 415                                      int(x2-hg35), y);
 416                         break;
 417                 }
 418                 case MACRON:     // macron
 419                 {
 420                         scr.drawLine(pgc,
 421                                      int(x2-(3*wid/7)), int(y+(hg/2) + hg35),
 422                                      int(x2+(3*wid/7)), int(y+(hg/2) + hg35));
 423                         break;
 424                 }
 425                 case TILDE:     // tilde
 426                 {
 427                         if (hg35 > 2) --hg35;
 428                         x2 += (hg35/2);
 429                         XPoint p[4];
 430                         p[0].x = int(x2 - 2*hg35); p[0].y = int(y + hg);
 431                         p[1].x = int(x2 - hg35);   p[1].y = int(y + hg35);
 432                         p[2].x = int(x2);          p[2].y = int(y + hg);
 433                         p[3].x = int(x2 + hg35);   p[3].y = int(y + hg35);
 434                         scr.drawLines(pgc, p, 4);
 435                         break;
 436                 }
 437                 case UNDERBAR:     // underbar
 438                 {
 439                         scr.drawLine(pgc,
 440                                      int(x2-(3*wid/7)), y+(hg/2),
 441                                      int(x2+(3*wid/7)), y+(hg/2));
 442                         break;
 443                 }
 444                 case CEDILLA:     // cedilla
 445                 {
 446                         XPoint p[4];
 447                         p[0].x = int(x2);          p[0].y = y;
 448                         p[1].x = int(x2);          p[1].y = y + (hg/3);
 449                         p[2].x = int(x2 + (hg/3)); p[2].y = y + (hg/2);
 450                         p[3].x = int(x2 - (hg/4)); p[3].y = y + hg;
 451                         scr.drawLines(pgc, p, 4);
 452                         break;
 453                 }
 454                 case UNDERDOT:     // underdot
 455                 case DOT:    // dot
 456                 {
 457                         scr.drawArc(pgc,int(x2), y+(hg/2),
 458                                     1, 1, 0, 360*64);
 459                         break;
 460                 }
 461                 case CIRCLE:     // circle
 462                 {
 463                         scr.drawArc(pgc, int(x2-(hg/2)), y, hg, hg, 0,
 464                                     360*64);
 465                         break;
 466                 }
 467                 case TIE:     // tie
 468                 {
 469                         scr.drawArc(pgc,
 470                                     int(x2), y+(hg/4),
 471                                     hg, hg, 0, 11519);
 472                         break;
 473                 }
 474                 case BREVE:     // breve
 475                 {
 476                         scr.drawArc(pgc,
 477                                     int(x2-(hg/2)), y-(hg/4),
 478                                     hg, hg, 0, -11519);
 479                         break;
 480                 }
 481                 case CARON:    // caron
 482                 {
 483                         XPoint p[3];
 484                         p[0].x = int(x2 - hg35); p[0].y = y;
 485                         p[1].x = int(x2);        p[1].y = int(y+hg35);
 486                         p[2].x = int(x2 + hg35); p[2].y = y;
 487                         scr.drawLines(pgc, p, 3);
 488                         break;
 489                 }
 490                 case SPECIAL_CARON:    // special caron
 491                 {
 492                         switch (ic) {
 493                         case 'L': wid = 4*wid/5; break;
 494                         case 't': y -= int(hg35/2); break;
 495                         }
 496                         XPoint p[3];
 497                         p[0].x = int(x+wid);          p[0].y = int(y+hg35+hg);
 498                         p[1].x = int(x+wid+(hg35/2)); p[1].y = int(y+ hg+(hg35/2));
 499                         p[2].x = int(x+wid+(hg35/2)); p[2].y = y + hg;
 500                         scr.drawLines(pgc, p, 3);
 501                         break;
 502                 }
 503                 case HUNGARIAN_UMLAUT:    // hung. umlaut
 504                 {
 505                         XSegment s[2];
 506                         s[0].x1= int(x2-(hg/2));      s[0].y1 = int(y + hg35);
 507                         s[0].x2= int(x2+hg35-(hg/2)); s[0].y2 = y;
 508                         s[1].x1= int(x2+(hg/2));      s[1].y1 = int(y + hg35);
 509                         s[1].x2= int(x2+hg35+(hg/2)); s[1].y2 = y;
 510
 511                         scr.drawSegments(pgc, s, 2);
 512                         break;
 513                 }
 514                 case UMLAUT:    // umlaut
 515                 {
 516                         int tmpadd = y;
 517                         tmpadd += (remdot) ? ((19*hg)/10) : ((20*hg)/27); // if (remdot) -> i or j
 518                         int rad = ((hg*4)/8);
 519                         if (rad <= 1) {
 520                                 scr.drawPoint(pgc, int(x2-((4*hg)/7)), tmpadd);
 521                                 scr.drawPoint(pgc, int(x2+((4*hg)/7)), tmpadd);
 522                         } else {
 523                                 scr.drawArc(pgc, int(x2-((2*hg)/4)), tmpadd,
 524                                             rad-1, rad-1, 0, 360*64);
 525                                 scr.drawArc(pgc, int(x2+((2*hg)/4)), tmpadd,
 526                                             rad-1, rad-1, 0, 360*64);
 527                         }
 528                         break;
 529                 }
 530                 case CIRCUMFLEX:    // circumflex
 531                 {
 532                         XPoint p[3];
 533                         p[0].x = int(x2 - hg35); p[0].y = y + hg;
 534                         p[1].x = int(x2);        p[1].y = int(y + hg35);
 535                         p[2].x = int(x2 + hg35); p[2].y = y + hg;
 536                         scr.drawLines(pgc, p, 3);
 537                         break;
 538                 }
 539                 case OGONEK:    // ogonek
 540                 {
 541                         // this does probably not look like an ogonek, so
 542                         // it should certainly be refined
 543                         XPoint p[4];
 544                         p[0].x = int(x2);          p[0].y = y;
 545                         p[1].x = int(x2);          p[1].y = y + (hg/3);
 546                         p[2].x = int(x2 - (hg/3)); p[2].y = y + (hg/2);
 547                         p[3].x = int(x2 + (hg/4)); p[3].y = y + hg;
 548                         scr.drawLines(pgc, p, 4);
 549                         break;
 550                 }
 551                 case lSLASH:
 552                 case LSLASH:
 553                 {
 554                         XPoint p[2];
 555                         p[0].x = int(x);                p[0].y = y+3*hg;
 556                         p[1].x = int(x+float(wid)*.75); p[1].y = y+hg;
 557                         scr.drawLines(pgc, p, 2);
 558                         break;
 559                 }
 560                 case DOT_LESS_I: // dotless-i
 561                 case DOT_LESS_J: // dotless-j
 562                 {
 563                         // nothing to do for these
 564                         break;
 565                 }
 566                 }
 567         } else {
 568                 //scr.drawFilledRectangle(int(x+1), baseline - Ascent(font)+1,
 569                 //                      Width(font)-2,
 570                 //                      Ascent(font)+Descent(font)-2,
 571                 //                      FL_GRAY80);
 572                 scr.fillRectangle(gc_lighted,
 573                                   int(x+1), baseline - Ascent(font)+1,
 574                                   Width(font)-2,
 575                                   Ascent(font)+Descent(font)-2);
 576
 577                 //scr.drawRectangle(int(x), baseline - Ascent(font),
 578                 //                Width(font)-1,
 579                 //                Ascent(font)+Descent(font)-1,
 580                 //                FL_GRAY80);
 581                 scr.drawRectangle(gc_lighted,
 582                                   int(x), baseline - Ascent(font),
 583                                   Width(font)-1,
 584                                   Ascent(font)+Descent(font)-1);
 585                 scr.drawString(font, contents, baseline, int(x+2));
 586         }
 587         x +=  Width(font);
 588 }
 589
 590
 591 void InsetLatexAccent::Write(FILE *file)
 592 {
 593         fprintf(file, "\\i %s\n", contents.c_str());
 594 }
 595
 596
 597 void InsetLatexAccent::Read(LyXLex &lex)
 598 {
 599         lex.EatLine();
 600         contents = lex.GetString();
 601         checkContents();
 602 }
 603
 604
 605 int InsetLatexAccent::Latex(FILE *file, signed char /*fragile*/)
 606 {
 607         fprintf(file, "%s", contents.c_str());
 608         return 0;
 609 }
 610
 611
 612 int InsetLatexAccent::Latex(string &file, signed char /*fragile*/)
 613 {
 614         file += contents;
 615         return 0;
 616 }
 617
 618
 619 int InsetLatexAccent::Linuxdoc(string &file)
 620 {
 621         file += contents;
 622         return 0;
 623 }
 624
 625
 626 int InsetLatexAccent::DocBook(string &file)
 627 {
 628         file += contents;
 629         return 0;
 630 }
 631
 632
 633 bool InsetLatexAccent::Deletable() const
 634 {
 635         return true;
 636 }
 637
 638
 639 bool InsetLatexAccent::DirectWrite() const
 640 {
 641         return true;
 642 }
 643
 644
 645 Inset* InsetLatexAccent::Clone()
 646 {
 647         InsetLatexAccent *result = new InsetLatexAccent(contents);
 648         return result;
 649 }
 650
 651
 652 Inset::Code InsetLatexAccent::LyxCode() const
 653 {
 654         return Inset::ACCENT_CODE;
 655 }
 656
 657
 658 bool InsetLatexAccent::IsEqual(Inset* other)
 659 {
 660         if (other && other->LyxCode() == Inset::ACCENT_CODE){
 661                 InsetLatexAccent* otheraccent = (InsetLatexAccent*) other;
 662                 return (contents == otheraccent->contents);
 663         }
 664         return false;
 665 }