src/mathed/formula.C

   1 /*
   2 *  File:        formula.C
   3 *  Purpose:     Implementation of formula inset
   4 *  Author:      Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
   5 *  Created:     January 1996
   6 *  Description: Allows the edition of math paragraphs inside Lyx.
   7 *
   8 *  Copyright: 1996-1998 Alejandro Aguilar Sierra
   9 *
  10 *  Version: 0.4, Lyx project.
  11 *
  12 *   You are free to use and modify this code under the terms of
  13 *   the GNU General Public Licence version 2 or later.
  14 */
  15
  16 #include <config.h>
  17
  18 #include "Lsstream.h"
  19
  20 #ifdef __GNUG__
  21 #pragma implementation
  22 #endif
  23
  24 #include "formula.h"
  25 #include "commandtags.h"
  26 #include "math_cursor.h"
  27 #include "math_parser.h"
  28 #include "lyx_main.h"
  29 #include "minibuffer.h"
  30 #include "BufferView.h"
  31 #include "lyxtext.h"
  32 #include "gettext.h"
  33 #include "LaTeXFeatures.h"
  34 #include "debug.h"
  35 #include "lyx_gui_misc.h"
  36 #include "support/LOstream.h"
  37 #include "LyXView.h"
  38 #include "Painter.h"
  39 #include "font.h"
  40 #include "support/lyxlib.h"
  41 #include "lyxrc.h"
  42 #include "math_inset.h"
  43 #include "math_parinset.h"
  44 #include "math_matrixinset.h"
  45 #include "math_rowst.h"
  46 #include "math_spaceinset.h"
  47 #include "math_deliminset.h"
  48 #include "mathed/support.h"
  49
  50 using std::ostream;
  51 using std::istream;
  52 using std::pair;
  53 using std::endl;
  54 using std::vector;
  55 using std::max;
  56
  57 extern string mathed_label;
  58
  59 extern char const * latex_special_chars;
  60
  61 int greek_kb_flag = 0;
  62
  63 // this is only used by Whichfont and mathed_init_fonts (Lgb)
  64 LyXFont * Math_Fonts = 0;
  65
  66 static LyXFont::FONT_SIZE lfont_size = LyXFont::SIZE_NORMAL;
  67
  68 // local global
  69 static int sel_x;
  70 static int sel_y;
  71 static bool sel_flag;
  72
  73 MathedCursor * InsetFormula::mathcursor = 0;
  74
  75 void mathed_init_fonts();
  76
  77
  78 static
  79 void mathedValidate(LaTeXFeatures & features, MathParInset * par);
  80
  81
  82 LyXFont WhichFont(short type, int size)
  83 {
  84         LyXFont f;
  85
  86         if (!Math_Fonts)
  87                 mathed_init_fonts();
  88
  89         switch (type) {
  90         case LM_TC_SYMB:
  91                 f = Math_Fonts[2];
  92                 break;
  93
  94         case LM_TC_BSYM:
  95                 f = Math_Fonts[2];
  96                 break;
  97
  98         case LM_TC_VAR:
  99         case LM_TC_IT:
 100                 f = Math_Fonts[0];
 101                 break;
 102
 103         case LM_TC_BF:
 104                 f = Math_Fonts[3];
 105                 break;
 106
 107         case LM_TC_SF:
 108                 f = Math_Fonts[7];
 109                 break;
 110
 111         case LM_TC_CAL:
 112                 f = Math_Fonts[4];
 113                 break;
 114
 115         case LM_TC_TT:
 116                 f = Math_Fonts[5];
 117                 break;
 118
 119         case LM_TC_SPECIAL: //f = Math_Fonts[0]; break;
 120         case LM_TC_TEXTRM:
 121         case LM_TC_RM:
 122                 f = Math_Fonts[6];
 123                 break;
 124
 125         default:
 126                 f = Math_Fonts[1];
 127                 break;
 128         }
 129
 130         f.setSize(lfont_size);
 131
 132         switch (size) {
 133         case LM_ST_DISPLAY:
 134                 if (type == LM_TC_BSYM) {
 135                         f.incSize();
 136                         f.incSize();
 137                 }
 138                 break;
 139
 140         case LM_ST_TEXT:
 141                 break;
 142
 143         case LM_ST_SCRIPT:
 144                 f.decSize();
 145                 break;
 146
 147         case LM_ST_SCRIPTSCRIPT:
 148                 f.decSize();
 149                 f.decSize();
 150                 break;
 151
 152         default:
 153                 lyxerr << "Mathed Error: wrong font size: " << size << endl;
 154                 break;
 155         }
 156
 157         if (type != LM_TC_TEXTRM)
 158                 f.setColor(LColor::math);
 159
 160         return f;
 161 }
 162
 163
 164 void mathed_init_fonts() //removed 'static' because DEC cxx does not
 165 //like it (JMarc)
 166 // Probably because this func is declared as a friend in math_defs.h
 167 // Lgb
 168 {
 169         Math_Fonts = new LyXFont[8]; //DEC cxx cannot initialize all fonts
 170         //at once (JMarc) rc
 171
 172         for (int i = 0 ; i < 8 ; ++i) {
 173                 Math_Fonts[i] = LyXFont(LyXFont::ALL_SANE);
 174         }
 175
 176         Math_Fonts[0].setShape(LyXFont::ITALIC_SHAPE);
 177
 178         Math_Fonts[1].setFamily(LyXFont::SYMBOL_FAMILY);
 179
 180         Math_Fonts[2].setFamily(LyXFont::SYMBOL_FAMILY);
 181         Math_Fonts[2].setShape(LyXFont::ITALIC_SHAPE);
 182
 183         Math_Fonts[3].setSeries(LyXFont::BOLD_SERIES);
 184
 185         Math_Fonts[4].setFamily(LyXFont::SANS_FAMILY);
 186         Math_Fonts[4].setShape(LyXFont::ITALIC_SHAPE);
 187
 188         Math_Fonts[5].setFamily(LyXFont::TYPEWRITER_FAMILY);
 189
 190         Math_Fonts[6].setFamily(LyXFont::ROMAN_FAMILY);
 191
 192         Math_Fonts[7].setFamily(LyXFont::SANS_FAMILY);
 193
 194         LyXFont f = WhichFont(LM_TC_VAR, LM_ST_TEXT);
 195         MathedInset::defaultAscent(lyxfont::maxAscent(f));
 196         MathedInset::defaultDescent(lyxfont::maxDescent(f));
 197         MathedInset::defaultWidth(lyxfont::width('I', f));
 198 }
 199
 200
 201
 202 InsetFormula::InsetFormula(bool display)
 203 {
 204         par = new MathParInset; // this leaks
 205         //  mathcursor = 0;
 206         disp_flag = display;
 207         //label = 0;
 208         if (disp_flag) {
 209                 par->SetType(LM_OT_PAR);
 210                 par->SetStyle(LM_ST_DISPLAY);
 211         }
 212 }
 213
 214
 215 InsetFormula::InsetFormula(MathParInset * p)
 216 {
 217         if (is_matrix_type(p->GetType()))
 218                 lyxerr << "InsetFormula::InsetFormula: This shouldn't happen" << endl;
 219
 220         par = is_multiline(p->GetType()) ?
 221                 new MathMatrixInset(static_cast<MathMatrixInset*>(p)):
 222                 new MathParInset(p);
 223         //   mathcursor = 0;
 224
 225         disp_flag = (par->GetType()>0);
 226         //label = 0;
 227 }
 228
 229
 230 InsetFormula::~InsetFormula()
 231 {
 232         delete par;
 233 }
 234
 235
 236 Inset * InsetFormula::Clone(Buffer const &) const
 237 {
 238         InsetFormula * f = new InsetFormula(par);
 239         f->label = label;
 240         return f;
 241 }
 242
 243
 244 void InsetFormula::Write(Buffer const * buf, ostream & os) const
 245 {
 246         os << "Formula ";
 247         Latex(buf, os, false, false);
 248 }
 249
 250
 251 int InsetFormula::Latex(Buffer const *, ostream & os, bool fragile, bool) const
 252 {
 253         int ret = 0;
 254         //#warning Alejandro, the number of lines is not returned in this case
 255         // This problem will disapear at 0.13.
 256         mathed_write(par, os, &ret, fragile, label);
 257         return ret;
 258 }
 259
 260
 261 int InsetFormula::Ascii(Buffer const *, ostream & os, int) const
 262 {
 263         par->Write(os, false);
 264         return 0;
 265 }
 266
 267
 268 int InsetFormula::Linuxdoc(Buffer const * buf, ostream & os) const
 269 {
 270         return Ascii(buf, os, 0);
 271 }
 272
 273
 274 int InsetFormula::DocBook(Buffer const * buf, ostream & os) const
 275 {
 276         return Ascii(buf, os, 0);
 277 }
 278
 279
 280 // Check if uses AMS macros
 281 void InsetFormula::Validate(LaTeXFeatures & features) const
 282 {
 283         if (is_ams(par->GetType()))
 284                 features.amsstyle = true;
 285
 286         // Validation is necessary only if not using AMS math.
 287         // To be safe, we will always run mathedValidate.
 288         //if (!features.amsstyle)
 289         mathedValidate(features, par);
 290 }
 291
 292
 293 void InsetFormula::Read(Buffer const *, LyXLex & lex)
 294 {
 295         istream & is = lex.getStream();
 296
 297         mathed_parser_file(is, lex.GetLineNo());
 298
 299         // Silly hack to read labels.
 300         mathed_label.erase();
 301
 302         mathed_parse(0, 0, &par);
 303         par->Metrics();
 304         disp_flag = (par->GetType() > 0);
 305
 306         // Update line number
 307         lex.setLineNo(mathed_parser_lineno());
 308
 309         if (!mathed_label.empty()) {
 310                 label = mathed_label;
 311                 mathed_label.erase();
 312         }
 313
 314         // reading of end_inset in the inset!!!
 315         while (lex.IsOK()) {
 316                 lex.nextToken();
 317                 if (lex.GetString() == "\\end_inset")
 318                         break;
 319                 lyxerr << "InsetFormula::Read: Garbage before \\end_inset,"
 320                         " or missing \\end_inset!" << endl;
 321         }
 322
 323 #ifdef DEBUG
 324         Write(lyxerr);
 325 #endif
 326 }
 327
 328
 329 int InsetFormula::ascent(BufferView *, LyXFont const &) const
 330 {
 331         return par->Ascent() + (disp_flag ? 8 : 1);
 332 }
 333
 334
 335 int InsetFormula::descent(BufferView *, LyXFont const &) const
 336 {
 337         return par->Descent() + (disp_flag ? 8 : 1);
 338 }
 339
 340
 341 int InsetFormula::width(BufferView * bv, LyXFont const & f) const
 342 {
 343         MathedInset::workWidth = bv->workWidth();
 344         lfont_size = f.size();
 345         par->Metrics();
 346         return par->Width(); //+2;
 347 }
 348
 349
 350 void InsetFormula::draw(BufferView * bv, LyXFont const & f,
 351                         int baseline, float & x, bool) const
 352 {
 353         MathedInset::workWidth = bv->workWidth();
 354         Painter & pain = bv->painter();
 355         // Seems commenting out solves a problem.
 356         LyXFont font = mathed_get_font(LM_TC_TEXTRM, LM_ST_TEXT);
 357         font.setSize(f.size());
 358         lfont_size = font.size();
 359         /// Let's try to wait a bit with this... (Lgb)
 360         //UpdatableInset::draw(pain, font, baseline, x);
 361
 362         // otherwise a segfault could occur
 363         // in some XDrawRectangles (i.e. matrix) (Matthias)
 364         if (mathcursor && mathcursor->GetPar() == par) {
 365                 if (mathcursor->Selection()) {
 366                         int n;
 367                         int * xp = 0;
 368                         int * yp = 0;
 369                         mathcursor->SelGetArea(&xp, &yp, n);
 370                         pain.fillPolygon(xp, yp, n, LColor::selection);
 371                 }
 372                 mathcursor->draw(pain, int(x), baseline);
 373         } else {
 374                 par->draw(pain, int(x), baseline);
 375         }
 376         x += float(width(bv, font));
 377
 378         if (is_numbered(par->GetType())) {
 379                 LyXFont wfont = WhichFont(LM_TC_BF, par->size());
 380                 wfont.setLatex(LyXFont::OFF);
 381
 382                 if (is_singlely_numbered(par->GetType())) {
 383                         string str;
 384                         if (!label.empty())
 385                                 str = string("(") + label + ")";
 386                         else
 387                                 str = string("(#)");
 388                         pain.text(int(x + 20), baseline, str, wfont);
 389                 } else {
 390                         MathMatrixInset * mt =
 391                                 static_cast<MathMatrixInset*>(par);
 392                         int y;
 393                         MathedRowSt const * crow = mt->getRowSt();
 394                         while (crow) {
 395                                 y = baseline + crow->getBaseline();
 396                                 if (crow->isNumbered()) {
 397                                         string str;
 398                                         if (!crow->getLabel().empty())
 399                                                 str = string("(") + crow->getLabel() + ")";
 400                                         else
 401                                                 str = "(#)";
 402                                         pain.text(int(x + 20), y, str, wfont);
 403                                 }
 404                                 crow = crow->getNext();
 405                         }
 406                 }
 407         }
 408         cursor_visible = false;
 409 }
 410
 411
 412 string const InsetFormula::EditMessage() const
 413 {
 414         return _("Math editor mode");
 415 }
 416
 417
 418 void InsetFormula::Edit(BufferView * bv, int x, int y, unsigned int)
 419 {
 420         mathcursor = new MathedCursor(par);
 421
 422         if (!bv->lockInset(this))
 423                 lyxerr[Debug::MATHED] << "Cannot lock inset!!!" << endl;
 424
 425         par->Metrics();
 426         bv->updateInset(this, false);
 427         x += par->xo();
 428         y += par->yo();
 429         mathcursor->SetPos(x, y);
 430         sel_x = 0;
 431         sel_y = 0;
 432         sel_flag = false;
 433 }
 434
 435
 436 void InsetFormula::InsetUnlock(BufferView * bv)
 437 {
 438         if (mathcursor) {
 439                 if (mathcursor->InMacroMode()) {
 440                         mathcursor->MacroModeClose();
 441                         UpdateLocal(bv);
 442                 }
 443                 delete mathcursor;
 444         }
 445         mathcursor = 0;
 446         bv->updateInset(this, false);
 447 }
 448
 449
 450 // Now a symbol can be inserted only if the inset is locked
 451 void InsetFormula::InsertSymbol(BufferView * bv, string const & s)
 452 {
 453         if (s.empty() || !mathcursor)
 454                 return;
 455         mathcursor->Interpret(s);
 456         UpdateLocal(bv);
 457 }
 458
 459
 460 void InsetFormula::GetCursorPos(BufferView *, int & x, int & y) const
 461 {
 462         mathcursor->GetPos(x, y);
 463         x -= par->xo();
 464         y -= par->yo();
 465 }
 466
 467
 468 void InsetFormula::ToggleInsetCursor(BufferView * bv)
 469 {
 470         if (!mathcursor)
 471                 return;
 472
 473         int x;
 474         int y;
 475         mathcursor->GetPos(x, y);
 476         //  x -= par->xo;
 477         y -= par->yo();
 478         LyXFont font = WhichFont(LM_TC_TEXTRM, LM_ST_TEXT);
 479         int asc = lyxfont::maxAscent(font);
 480         int desc = lyxfont::maxDescent(font);
 481
 482         if (cursor_visible)
 483                 bv->hideLockedInsetCursor();
 484         else
 485                 bv->showLockedInsetCursor(x, y, asc, desc);
 486
 487         cursor_visible = !cursor_visible;
 488 }
 489
 490
 491 void InsetFormula::ShowInsetCursor(BufferView * bv, bool)
 492 {
 493         if (!cursor_visible) {
 494                 if (mathcursor) {
 495                         int x;
 496                         int y;
 497                         mathcursor->GetPos(x, y);
 498                         //  x -= par->xo;
 499                         y -= par->yo();
 500                         LyXFont font = WhichFont(LM_TC_TEXTRM, LM_ST_TEXT);
 501                         int asc = lyxfont::maxAscent(font);
 502                         int desc = lyxfont::maxDescent(font);
 503                         bv->fitLockedInsetCursor(x, y, asc, desc);
 504                 }
 505                 ToggleInsetCursor(bv);
 506         }
 507 }
 508
 509
 510 void InsetFormula::HideInsetCursor(BufferView * bv)
 511 {
 512         if (cursor_visible)
 513                 ToggleInsetCursor(bv);
 514 }
 515
 516
 517 void InsetFormula::ToggleInsetSelection(BufferView * bv)
 518 {
 519         if (!mathcursor)
 520                 return;
 521
 522         bv->updateInset(this, false);
 523 }
 524
 525
 526 void InsetFormula::display(bool dspf)
 527 {
 528         if (dspf != disp_flag) {
 529                 if (dspf) {
 530                         par->SetType(LM_OT_PAR);
 531                         par->SetStyle(LM_ST_DISPLAY);
 532                 } else {
 533                         if (is_multiline(par->GetType())) {
 534                                 MathParInset * p = new MathParInset(par);
 535                                 delete par;
 536                                 par = p;
 537                                 if (mathcursor)
 538                                         mathcursor->SetPar(par);
 539                         }
 540                         par->SetType(LM_OT_MIN);
 541                         par->SetStyle(LM_ST_TEXT);
 542                         if (!label.empty()) {
 543                                 label.erase();
 544                         }
 545                 }
 546                 disp_flag = dspf;
 547         }
 548 }
 549
 550
 551 vector<string> const InsetFormula::getLabelList() const
 552 {
 553         //#warning This is dirty, I know. Ill clean it at 0.11
 554         // Correction, the only way to clean this is with a new kernel: 0.13.
 555
 556         vector<string> label_list;
 557
 558         if (is_multi_numbered(par->GetType())) {
 559                 MathMatrixInset * mt = static_cast<MathMatrixInset*>(par);
 560                 MathedRowSt const * crow = mt->getRowSt();
 561                 while (crow) {
 562                         if (!crow->getLabel().empty())
 563                                 label_list.push_back(crow->getLabel());
 564                         crow = crow->getNext();
 565                 }
 566         } else if (!label.empty())
 567                 label_list.push_back(label);
 568
 569         return label_list;
 570 }
 571
 572
 573 void InsetFormula::UpdateLocal(BufferView * bv)
 574 {
 575         par->Metrics();  // To inform lyx kernel the exact size
 576         // (there were problems with arrays).
 577         bv->updateInset(this, true);
 578 }
 579
 580
 581 void InsetFormula::InsetButtonRelease(BufferView * bv,
 582                                       int x, int y, int /*button*/)
 583 {
 584         if (mathcursor) {
 585                 HideInsetCursor(bv);
 586                 x += par->xo();
 587                 y += par->yo();
 588                 mathcursor->SetPos(x, y);
 589                 ShowInsetCursor(bv);
 590                 if (sel_flag) {
 591                         sel_flag = false;
 592                         sel_x = sel_y = 0;
 593                         bv->updateInset(this, false);
 594                 }
 595         }
 596 }
 597
 598
 599 void InsetFormula::InsetButtonPress(BufferView * bv, int x, int y,
 600                                     int /*button*/)
 601 {
 602         sel_flag = false;
 603         sel_x = x;  sel_y = y;
 604         if (mathcursor && mathcursor->Selection()) {
 605                 mathcursor->SelClear();
 606                 bv->updateInset(this, false);
 607         }
 608 }
 609
 610
 611 void InsetFormula::InsetMotionNotify(BufferView * bv,
 612                                      int x, int y, int /*button*/)
 613 {
 614         if (sel_x && sel_y && abs(x-sel_x) > 4 && !sel_flag) {
 615                 sel_flag = true;
 616                 HideInsetCursor(bv);
 617                 mathcursor->SetPos(sel_x + par->xo(), sel_y + par->yo());
 618                 mathcursor->SelStart();
 619                 ShowInsetCursor(bv);
 620                 mathcursor->GetPos(sel_x, sel_y);
 621         } else if (sel_flag) {
 622                 HideInsetCursor(bv);
 623                 x += par->xo();
 624                 y += par->yo();
 625                 mathcursor->SetPos(x, y);
 626                 ShowInsetCursor(bv);
 627                 mathcursor->GetPos(x, y);
 628                 if (sel_x != x || sel_y != y)
 629                         bv->updateInset(this, false);
 630                 sel_x = x;
 631                 sel_y = y;
 632         }
 633 }
 634
 635
 636 void InsetFormula::InsetKeyPress(XKeyEvent *)
 637 {
 638         lyxerr[Debug::MATHED] << "Used InsetFormula::InsetKeyPress." << endl;
 639 }
 640
 641
 642 // Special Mathed functions
 643 bool InsetFormula::SetNumber(bool numbf)
 644 {
 645         if (disp_flag) {
 646                 short type = par->GetType();
 647                 bool const oldf = is_numbered(type);
 648                 if (numbf && !oldf)
 649                         ++type;
 650                 if (!numbf && oldf)
 651                         --type;
 652                 par->SetType(type);
 653                 return oldf;
 654         } else
 655                 return false;
 656 }
 657
 658
 659 UpdatableInset::RESULT
 660 InsetFormula::LocalDispatch(BufferView * bv, int action, string const & arg)
 661 {
 662         //   extern char *dispatch_result;
 663         MathedTextCodes varcode = LM_TC_MIN;
 664         bool was_macro = mathcursor->InMacroMode();
 665         bool sel = false;
 666         bool space_on = false;
 667         bool was_selection = mathcursor->Selection();
 668         RESULT result = DISPATCHED;
 669         static MathSpaceInset * sp= 0;
 670
 671         HideInsetCursor(bv);
 672
 673         if (mathcursor->getLastCode() == LM_TC_TEX) {
 674                 varcode = LM_TC_TEX;
 675         }
 676
 677         switch (action) {
 678                 // --- Cursor Movements ---------------------------------------------
 679         case LFUN_RIGHTSEL:
 680                 sel = true; // fall through...
 681
 682         case LFUN_RIGHT:
 683                 result = DISPATCH_RESULT(mathcursor->Right(sel));
 684                 if (!sel && (result == DISPATCHED))
 685                         result = DISPATCHED_NOUPDATE;
 686                 break;
 687
 688
 689         case LFUN_LEFTSEL:
 690                 sel = true; // fall through
 691
 692         case LFUN_LEFT:
 693                 result = DISPATCH_RESULT(mathcursor->Left(sel));
 694                 if (!sel && (result == DISPATCHED))
 695                         result = DISPATCHED_NOUPDATE;
 696                 break;
 697
 698
 699         case LFUN_UPSEL:
 700                 sel = true;
 701
 702         case LFUN_UP:
 703                 result = DISPATCH_RESULT(mathcursor->Up(sel));
 704                 if (!sel && (result == DISPATCHED))
 705                         result = DISPATCHED_NOUPDATE;
 706                 break;
 707
 708
 709         case LFUN_DOWNSEL:
 710                 sel = true;
 711
 712         case LFUN_DOWN:
 713                 result = DISPATCH_RESULT(mathcursor->Down(sel));
 714                 if (!sel && (result == DISPATCHED))
 715                         result = DISPATCHED_NOUPDATE;
 716                 break;
 717
 718
 719         case LFUN_HOME:
 720                 mathcursor->Home();
 721                 result = DISPATCHED_NOUPDATE;
 722                 break;
 723
 724         case LFUN_END:
 725                 mathcursor->End();
 726                 result = DISPATCHED_NOUPDATE;
 727                 break;
 728
 729         case LFUN_DELETE_LINE_FORWARD:
 730                 bv->lockedInsetStoreUndo(Undo::DELETE);
 731                 mathcursor->DelLine();
 732                 UpdateLocal(bv);
 733                 break;
 734
 735         case LFUN_BREAKLINE:
 736         {
 737                 bv->lockedInsetStoreUndo(Undo::INSERT);
 738                 byte c = arg.empty() ? '1' : arg[0];
 739                 mathcursor->Insert(c, LM_TC_CR);
 740                 if (!label.empty()) {
 741                         mathcursor->setLabel(label);
 742                         label.erase();
 743                 }
 744                 par = mathcursor->GetPar();
 745                 UpdateLocal(bv);
 746         }
 747         break;
 748
 749         case LFUN_TAB:
 750                 bv->lockedInsetStoreUndo(Undo::INSERT);
 751                 mathcursor->Insert(0, LM_TC_TAB);
 752                 //UpdateInset(this);
 753                 break;
 754
 755         case LFUN_TABINSERT:
 756                 bv->lockedInsetStoreUndo(Undo::INSERT);
 757                 mathcursor->Insert('T', LM_TC_TAB);
 758                 UpdateLocal(bv);
 759                 break;
 760
 761         case LFUN_BACKSPACE:
 762                 if (!mathcursor->Left())
 763                         break;
 764
 765                 if (!mathcursor->InMacroMode() && mathcursor->pullArg()) {
 766                         bv->updateInset(this, true);
 767                         break;
 768                 }
 769                 // fall through...
 770
 771         case LFUN_DELETE:
 772                 bv->lockedInsetStoreUndo(Undo::DELETE);
 773                 mathcursor->Delete();
 774                 bv->updateInset(this, true);
 775                 break;
 776
 777                 //    case LFUN_GETXY:
 778                 //      sprintf(dispatch_buffer, "%d %d",);
 779                 //      dispatch_result = dispatch_buffer;
 780                 //      break;
 781         case LFUN_SETXY:
 782         {
 783                 int x;
 784                 int y;
 785                 int x1;
 786                 int y1;
 787                 istringstream ist(arg.c_str());
 788                 ist >> x >> y;
 789                 par->GetXY(x1, y1);
 790                 mathcursor->SetPos(x1 + x, y1 + y);
 791         }
 792         break;
 793
 794                 /* cursor selection ---------------------------- */
 795
 796         case LFUN_PASTE:
 797                 if (was_macro)
 798                         mathcursor->MacroModeClose();
 799                 bv->lockedInsetStoreUndo(Undo::INSERT);
 800                 mathcursor->SelPaste();
 801                 UpdateLocal(bv);
 802                 break;
 803
 804         case LFUN_CUT:
 805                 bv->lockedInsetStoreUndo(Undo::DELETE);
 806                 mathcursor->SelCut();
 807                 UpdateLocal(bv);
 808                 break;
 809
 810         case LFUN_COPY:
 811                 mathcursor->SelCopy();
 812                 break;
 813
 814         case LFUN_HOMESEL:
 815         case LFUN_ENDSEL:
 816         case LFUN_WORDRIGHTSEL:
 817         case LFUN_WORDLEFTSEL:
 818                 break;
 819
 820                 // --- accented characters ------------------------------
 821
 822         case LFUN_UMLAUT:     mathcursor->setAccent(LM_ddot); break;
 823         case LFUN_CIRCUMFLEX: mathcursor->setAccent(LM_hat); break;
 824         case LFUN_GRAVE:      mathcursor->setAccent(LM_grave); break;
 825         case LFUN_ACUTE:      mathcursor->setAccent(LM_acute); break;
 826         case LFUN_TILDE:      mathcursor->setAccent(LM_tilde); break;
 827         case LFUN_MACRON:     mathcursor->setAccent(LM_bar); break;
 828         case LFUN_DOT:        mathcursor->setAccent(LM_dot); break;
 829         case LFUN_CARON:      mathcursor->setAccent(LM_check); break;
 830         case LFUN_BREVE:      mathcursor->setAccent(LM_breve); break;
 831         case LFUN_VECTOR:     mathcursor->setAccent(LM_vec); break;
 832
 833                 // Greek mode
 834         case LFUN_GREEK:
 835                 if (!greek_kb_flag) {
 836                         greek_kb_flag = 1;
 837                         bv->owner()->getMiniBuffer()->Set(_("Math greek mode on"));
 838                 } else
 839                         greek_kb_flag = 0;
 840                 break;
 841
 842                 // Greek keyboard
 843         case LFUN_GREEK_TOGGLE:
 844                 greek_kb_flag = (greek_kb_flag) ? 0 : 2;
 845                 if (greek_kb_flag)
 846                         bv->owner()->getMiniBuffer()->Set(_("Math greek keyboard on"));
 847                 else
 848                         bv->owner()->getMiniBuffer()->Set(_("Math greek keyboard off"));
 849                 break;
 850
 851                 //  Math fonts
 852         case LFUN_BOLD:  mathcursor->toggleLastCode(LM_TC_BF); break;
 853         case LFUN_SANS:  mathcursor->toggleLastCode(LM_TC_SF); break;
 854         case LFUN_EMPH:  mathcursor->toggleLastCode(LM_TC_CAL); break;
 855         case LFUN_ROMAN: mathcursor->toggleLastCode(LM_TC_RM); break;
 856         case LFUN_CODE:  mathcursor->toggleLastCode(LM_TC_TT); break;
 857         case LFUN_DEFAULT:  mathcursor->setLastCode(LM_TC_VAR); break;
 858
 859         case LFUN_TEX:
 860                 // varcode = LM_TC_TEX;
 861                 mathcursor->setLastCode(LM_TC_TEX);
 862                 bv->owner()->getMiniBuffer()->Set(_("TeX mode"));
 863                 break;
 864
 865         case LFUN_MATH_NUMBER:
 866                 bv->lockedInsetStoreUndo(Undo::INSERT);
 867                 if (disp_flag) {
 868                         short type = par->GetType();
 869                         if (is_numbered(type)) {
 870                                 --type;
 871                                 if (!label.empty()) {
 872                                         label.erase();
 873                                 }
 874                                 bv->owner()->getMiniBuffer()->Set(_("No number"));
 875                         } else {
 876                                 ++type;
 877                                 bv->owner()->getMiniBuffer()->Set(_("Number"));
 878                         }
 879                         par->SetType(type);
 880                         UpdateLocal(bv);
 881                 }
 882                 break;
 883
 884         case LFUN_MATH_NONUMBER:
 885                 if (is_multi_numbered(par->GetType())) {
 886                                 //         MathMatrixInset *mt = (MathMatrixInset*)par;
 887                                 //BUG
 888                                 //         mt->SetNumbered(!mt->IsNumbered());
 889
 890 #warning This is a terrible hack! We should find a better solution.
 891                         while (mathcursor->getLabel() == MathedXIter::error_label) {
 892                                 if (LocalDispatch(bv, LFUN_LEFT, string()) == FINISHED)
 893                                         return DISPATCHED;
 894                         }
 895                         mathcursor->setNumbered();
 896                         UpdateLocal(bv);
 897                 }
 898                 break;
 899
 900         case LFUN_MATH_LIMITS:
 901                 bv->lockedInsetStoreUndo(Undo::INSERT);
 902                 if (mathcursor->Limits())
 903                         UpdateLocal(bv);
 904                 // fall through!
 905
 906         case LFUN_MATH_SIZE:
 907                 if (!arg.empty()) {
 908                         latexkeys * l = in_word_set(arg);
 909                         int sz = (l) ? l->id: -1;
 910                         mathcursor->SetSize(sz);
 911                         UpdateLocal(bv);
 912                         break;
 913                 }
 914                 // possible fall through?
 915
 916         case LFUN_INSERT_MATH:
 917                 bv->lockedInsetStoreUndo(Undo::INSERT);
 918                 InsertSymbol(bv, arg);
 919                 break;
 920
 921
 922         case LFUN_INSERT_MATRIX:
 923         {
 924                 bv->lockedInsetStoreUndo(Undo::INSERT);
 925                 int k, m, n;
 926                 char s[80], arg2[80];
 927                                 // This is just so that too long args won't ooze out of s.
 928                 strncpy(arg2, arg.c_str(), 80); arg2[79]= '\0';
 929                 k = sscanf(arg2, "%d %d %s", &m, &n, s);
 930                 s[79] = '\0';
 931
 932                 if (k < 1) {
 933                         m = n = 1;
 934                 } else if (k == 1) {
 935                         n = 1;
 936                 }
 937
 938                 MathMatrixInset * p = new MathMatrixInset(m, n);
 939                 if (mathcursor && p) {
 940                         if (k > 2 && int(strlen(s)) > m)
 941                                 p->SetAlign(s[0], &s[1]);
 942                         mathcursor->Insert(p, LM_TC_ACTIVE_INSET);
 943                         UpdateLocal(bv);
 944                 }
 945                 break;
 946         }
 947
 948         case LFUN_MATH_DELIM:
 949         {
 950                 bv->lockedInsetStoreUndo(Undo::INSERT);
 951                 char lf[40], rg[40], arg2[40];
 952                 int ilf = '(', irg = '.';
 953                 latexkeys * l;
 954                 string vdelim("(){}[]./|");
 955
 956                 if (arg.empty())
 957                         break;
 958                 ::strncpy(arg2, arg.c_str(), 40);
 959                 arg2[39]= '\0';
 960                 int n = sscanf(arg2, "%s %s", lf, rg);
 961                 lf[39] = '\0';
 962                 rg[39] = '\0';
 963
 964                 if (n > 0) {
 965                         if (isdigit(lf[0]))
 966                                 ilf = lyx::atoi(lf);
 967                         else
 968                                 if (lf[1]) {
 969                                         l = in_word_set(lf, strlen(lf));
 970                                         // Long words will cause l == 0; so check.
 971                                         if (l)
 972                                                 ilf = l->id;
 973                                 } else if (vdelim.find(lf[0]) != string::npos)
 974                                         ilf = lf[0];
 975
 976                         if (n > 1) {
 977                                 if (isdigit(rg[0]))
 978                                         irg = lyx::atoi(rg);
 979                                 else
 980                                         if (rg[1]) {
 981                                                 l = in_word_set(rg, strlen(rg));
 982                                                 if (l)
 983                                                         irg = l->id;
 984                                         } else if (vdelim.find(rg[0]) != string::npos)
 985                                                 irg = rg[0];
 986                         }
 987                 }
 988
 989                 MathDelimInset * p = new MathDelimInset(ilf, irg);
 990                 mathcursor->Insert(p, LM_TC_ACTIVE_INSET);
 991                 UpdateLocal(bv);
 992                 break;
 993         }
 994
 995         case LFUN_PROTECTEDSPACE:
 996                 bv->lockedInsetStoreUndo(Undo::INSERT);
 997                 sp = new MathSpaceInset(1);
 998                 mathcursor->Insert(sp);
 999                 space_on = true;
1000                 UpdateLocal(bv);
1001                 break;
1002
1003         case LFUN_INSERT_LABEL:
1004         {
1005                 bv->lockedInsetStoreUndo(Undo::INSERT);
1006                 if (par->GetType() < LM_OT_PAR)
1007                         break;
1008
1009                 string old_label = is_multiline(par->GetType())
1010                         ? mathcursor->getLabel() : label;
1011
1012 #warning This is a terrible hack! We should find a better solution.
1013                 // This is needed because in some positions
1014                 // mathcursor->cursor->crow is equal to 0, and therefore
1015                 // the label cannot be inserted.
1016                 // So we move the cursor left until
1017                 // mathcursor->cursor->crow != 0.
1018                 while (old_label == MathedXIter::error_label) {
1019                         if (LocalDispatch(bv, LFUN_LEFT, string()) == FINISHED)
1020                                 return DISPATCHED;
1021                         old_label = mathcursor->getLabel();
1022                 }
1023
1024                 string new_label = arg;
1025                 if (new_label.empty()) {
1026                         string default_label = (lyxrc.label_init_length >= 0) ? "eq:" : "";
1027                         pair<bool, string> res = old_label.empty()
1028                                 ? askForText(_("Enter new label to insert:"), default_label)
1029                                 : askForText(_("Enter label:"), old_label);
1030                         if (!res.first)
1031                                 break;
1032                         new_label = frontStrip(strip(res.second));
1033                 }
1034
1035                 if (new_label == old_label)
1036                         break;  // Nothing to do
1037
1038                 if (!new_label.empty())
1039                         SetNumber(true);
1040
1041                 if (!new_label.empty() && bv->ChangeRefsIfUnique(old_label, new_label))
1042                         bv->redraw();
1043
1044                 if (is_multi_numbered(par->GetType())) {
1045                         mathcursor->setLabel(new_label);
1046                         // MathMatrixInset *mt = (MathMatrixInset*)par;
1047                         // mt->SetLabel(new_label);
1048                 } else
1049                         label = new_label;
1050
1051                 UpdateLocal(bv);
1052                 break;
1053         }
1054
1055         case LFUN_MATH_DISPLAY:
1056                 bv->lockedInsetStoreUndo(Undo::EDIT);
1057                 display(!disp_flag);
1058                 UpdateLocal(bv);
1059                 break;
1060
1061                 // Invalid actions under math mode
1062         case LFUN_MATH_MODE:
1063                 if (mathcursor->getLastCode()!= LM_TC_TEXTRM) {
1064                         bv->owner()->getMiniBuffer()->Set(_("math text mode"));
1065                         varcode = LM_TC_TEXTRM;
1066                 } else {
1067                         varcode = LM_TC_VAR;
1068                 }
1069                 mathcursor->setLastCode(varcode);
1070                 break;
1071
1072         case LFUN_UNDO:
1073                 bv->owner()->getMiniBuffer()->Set(_("Invalid action in math mode!"));
1074                 break;
1075
1076                 //------- dummy actions
1077         case LFUN_EXEC_COMMAND:
1078                 bv->owner()->getMiniBuffer()->PrepareForCommand();
1079                 break;
1080
1081         default:
1082                 if ((action == -1  || action == LFUN_SELFINSERT) && !arg.empty())  {
1083                         unsigned char c = arg[0];
1084                         bv->lockedInsetStoreUndo(Undo::INSERT);
1085
1086                         if (c == ' ' && mathcursor->getAccent() == LM_hat) {
1087                                 c = '^';
1088                                 mathcursor->setAccent(0);
1089                         }
1090
1091                         if (c == 0) {      // Dead key, do nothing
1092                                 //lyxerr << "deadkey" << endl;
1093                                 break;
1094                         }
1095
1096                         if (isalpha(c)) {
1097                                 if (mathcursor->getLastCode() == LM_TC_TEX) {
1098                                         mathcursor->MacroModeOpen();
1099                                         mathcursor->clearLastCode();
1100                                         varcode = LM_TC_MIN;
1101                                 } else if (!varcode) {
1102                                         short f = (mathcursor->getLastCode()) ?
1103                                                 mathcursor->getLastCode() :
1104                                                 static_cast<MathedTextCodes>(mathcursor->GetFCode());
1105                                         varcode = MathIsAlphaFont(f) ?
1106                                                 static_cast<MathedTextCodes>(f) :
1107                                                 LM_TC_VAR;
1108                                 }
1109
1110                                 //           lyxerr << "Varcode << vardoce;
1111                                 MathedTextCodes char_code = varcode;
1112                                 if (greek_kb_flag) {
1113                                         char greek[26] =
1114                                         {'A', 'B', 'X',  0 , 'E',  0 ,  0 , 'H', 'I',  0 ,
1115                                          'K',  0 , 'M', 'N', 'O',  0 ,  0 , 'P',  0 , 'T',
1116                                          'Y',  0,   0,   0,   0 , 'Z' };
1117
1118                                         if ('A' <= c && c <= 'Z' && greek[c - 'A']) {
1119                                                 char_code = LM_TC_RM;
1120                                                 c = greek[c - 'A'];
1121                                         } else
1122                                                 char_code = LM_TC_SYMB;
1123                                 }
1124
1125                                 mathcursor->Insert(c, char_code);
1126
1127                                 if (greek_kb_flag && char_code == LM_TC_RM )
1128                                         mathcursor->setLastCode(LM_TC_VAR);
1129
1130                                 varcode = LM_TC_MIN;
1131
1132                                 if (greek_kb_flag<2)
1133                                         greek_kb_flag = 0;
1134
1135                         } else if (strchr("!,:;{}", c) && (varcode == LM_TC_TEX||was_macro)) {
1136                                 mathcursor->Insert(c, LM_TC_TEX);
1137                                 if (c == '{') {
1138                                         mathcursor->Insert('}', LM_TC_TEX);
1139                                         mathcursor->Left();
1140                                 }
1141                                 mathcursor->clearLastCode();
1142                                 //             varcode = LM_TC_MIN;
1143                         } else if (c == '_' && varcode == LM_TC_TEX) {
1144                                 mathcursor->Insert(c, LM_TC_SPECIAL);
1145                                 mathcursor->clearLastCode();
1146                                 //             varcode = LM_TC_MIN;
1147                         } else if (('0'<= c && c<= '9') && (varcode == LM_TC_TEX||was_macro)) {
1148                                 mathcursor->MacroModeOpen();
1149                                 mathcursor->clearLastCode();
1150                                 mathcursor->Insert(c, LM_TC_MIN);
1151                         } else if (('0'<= c && c<= '9') || strchr(";:!|[]().,?", c)) {
1152                                 mathcursor->Insert(c, LM_TC_CONST);
1153                         } else if (strchr("+/-*<>=", c)) {
1154                                 mathcursor->Insert(c, LM_TC_BOP);
1155                         } else if (strchr(latex_special_chars, c) && c!= '_') {
1156                                 mathcursor->Insert(c, LM_TC_SPECIAL);
1157                         } else if (c == '_' || c == '^') {
1158                                 char s[2];
1159                                 s[0] = c;
1160                                 s[1] = 0;
1161                                 mathcursor->Interpret(s);
1162                         } else if (c == ' ') {
1163                                 if (!varcode) {
1164                                         short f = (mathcursor->getLastCode()) ?
1165                                                 mathcursor->getLastCode() :
1166                                                 static_cast<MathedTextCodes>(mathcursor->GetFCode());
1167                                         varcode = MathIsAlphaFont(f) ?
1168                                                 static_cast<MathedTextCodes>(f) :
1169                                                 LM_TC_VAR;
1170                                 }
1171
1172                                 if (varcode == LM_TC_TEXTRM) {
1173                                         mathcursor->Insert(c, LM_TC_TEXTRM);
1174                                 } else if (was_macro) {
1175                                         mathcursor->MacroModeClose();
1176                                 } else if (sp) {
1177                                         int isp = (sp->GetSpace()<5) ? sp->GetSpace()+1: 0;
1178                                         sp->SetSpace(isp);
1179                                         space_on = true;
1180                                 } else if (!mathcursor->Pop() && mathcursor->IsEnd())
1181                                         result = FINISHED;
1182                         } else if (c == '\'' || c == '@') {
1183                                 mathcursor->Insert (c, LM_TC_VAR);
1184                         } else if (c == '\\') {
1185                                 if (was_macro)
1186                                         mathcursor->MacroModeClose();
1187                                 bv->owner()->getMiniBuffer()->Set(_("TeX mode"));
1188                                 mathcursor->setLastCode(LM_TC_TEX);
1189                         }
1190                         UpdateLocal(bv);
1191                 } else if (action == LFUN_MATH_PANEL) {
1192                         result = UNDISPATCHED;
1193                 } else {
1194                         // lyxerr << "Closed by action " << action << endl;
1195                         result =  FINISHED;
1196                 }
1197         }
1198
1199         if (was_macro != mathcursor->InMacroMode()
1200             && action >= 0
1201             && action != LFUN_BACKSPACE)
1202                 UpdateLocal(bv);
1203
1204         if (sp && !space_on)
1205                 sp = 0;
1206
1207         if (mathcursor->Selection() || was_selection)
1208                 ToggleInsetSelection(bv);
1209
1210         if ((result == DISPATCHED) || (result == DISPATCHED_NOUPDATE) ||
1211             (result == UNDISPATCHED))
1212                 ShowInsetCursor(bv);
1213         else
1214                 bv->unlockInset(this);
1215
1216         return result;
1217 }
1218
1219
1220
1221 static
1222 void mathedValidate(LaTeXFeatures & features, MathParInset * par)
1223 {
1224         MathedIter it(par->GetData());
1225
1226         while (it.OK() && !(features.binom && features.boldsymbol)) {
1227                 if (it.IsInset()) {
1228                         if (it.IsActive()) {
1229                                 MathParInset * p = it.GetActiveInset();
1230                                 if (!features.binom && p->GetType() == LM_OT_MACRO &&
1231                                     p->GetName() == "binom") {
1232                                         features.binom = true;
1233                                 } else {
1234                                         for (int i = 0; i <= p->getMaxArgumentIdx(); ++i) {
1235                                                 p->setArgumentIdx(i);
1236                                                 mathedValidate(features, p);
1237                                         }
1238                                 }
1239                         } else {
1240                                 MathedInset * p = it.GetInset();
1241                                 if (!features.boldsymbol && p->GetName() == "boldsymbol") {
1242                                         features.boldsymbol = true;
1243                                 }
1244                         }
1245                 }
1246                 it.Next();
1247         }
1248 }