src/mathed/formulabase.C

   1 /*
   2 *  File:        formulabase.C
   3 *  Purpose:     Implementation of common parts of the LyX  math insets
   4 *  Author:      Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
   5 *  Created:     January 1996
   6 *
   7 *  Copyright: 1996-1998 Alejandro Aguilar Sierra
   8 *
   9 *  Version: 0.4, Lyx project.
  10 *
  11 *   You are free to use and modify this code under the terms of
  12 *   the GNU General Public Licence version 2 or later.
  13 */
  14
  15 #include <config.h>
  16 #include <fstream>
  17
  18 #include "Lsstream.h"
  19 #include "support/LAssert.h"
  20
  21
  22 #include "formula.h"
  23 #include "formulamacro.h"
  24 #include "lyxrc.h"
  25 #include "funcrequest.h"
  26 #include "BufferView.h"
  27 #include "lyxtext.h"
  28 #include "gettext.h"
  29 #include "LaTeXFeatures.h"
  30 #include "debug.h"
  31 #include "math_support.h"
  32 #include "math_metricsinfo.h"
  33 #include "support/lstrings.h"
  34 #include "frontends/LyXView.h"
  35 #include "frontends/font_metrics.h"
  36 #include "frontends/mouse_state.h"
  37 #include "Lsstream.h"
  38 #include "math_arrayinset.h"
  39 #include "math_charinset.h"
  40 #include "math_deliminset.h"
  41 #include "math_cursor.h"
  42 #include "math_factory.h"
  43 #include "math_fontinset.h"
  44 #include "math_hullinset.h"
  45 #include "math_iterator.h"
  46 #include "math_macrotable.h"
  47 #include "math_parser.h"
  48 #include "math_pos.h"
  49 #include "math_spaceinset.h"
  50 #include "undo_funcs.h"
  51 #include "textpainter.h"
  52 #include "frontends/Dialogs.h"
  53 #include "intl.h"
  54 #include "ref_inset.h"
  55
  56 using std::endl;
  57 using std::ostream;
  58 using std::vector;
  59 using std::abs;
  60 using std::max;
  61
  62 MathCursor * mathcursor = 0;
  63
  64
  65 namespace {
  66
  67 // local global
  68 int first_x;
  69 int first_y;
  70
  71
  72
  73 bool openNewInset(BufferView * bv, UpdatableInset * new_inset)
  74 {
  75         if (!bv->insertInset(new_inset)) {
  76                 delete new_inset;
  77                 return false;
  78         }
  79         new_inset->edit(bv, true);
  80         return true;
  81 }
  82
  83
  84 } // namespace anon
  85
  86
  87
  88 InsetFormulaBase::InsetFormulaBase()
  89         : font_(), xo_(0), yo_(0)
  90 {
  91         // This is needed as long the math parser is not re-entrant
  92         initMath();
  93         //lyxerr << "sizeof MathInset: " << sizeof(MathInset) << "\n";
  94         //lyxerr << "sizeof MathMetricsInfo: " << sizeof(MathMetricsInfo) << "\n";
  95         //lyxerr << "sizeof MathCharInset: " << sizeof(MathCharInset) << "\n";
  96         //lyxerr << "sizeof LyXFont: " << sizeof(LyXFont) << "\n";
  97 }
  98
  99
 100 // simply scrap this function if you want
 101 void InsetFormulaBase::mutateToText()
 102 {
 103 #if 0
 104         // translate to latex
 105         ostringstream os;
 106         latex(NULL, os, false, false);
 107         string str = os.str();
 108
 109         // insert this text
 110         LyXText * lt = view_->getLyXText();
 111         string::const_iterator cit = str.begin();
 112         string::const_iterator end = str.end();
 113         for (; cit != end; ++cit)
 114                 view_->owner()->getIntl()->getTransManager().TranslateAndInsert(*cit, lt);
 115
 116         // remove ourselves
 117         //view_->owner()->dispatch(LFUN_ESCAPE);
 118 #endif
 119 }
 120
 121
 122 void InsetFormulaBase::handleFont
 123         (BufferView * bv, string const & arg, string const & font)
 124 {
 125         // this whole function is a hack and won't work for incremental font
 126         // changes...
 127         bv->lockedInsetStoreUndo(Undo::EDIT);
 128         if (mathcursor->par()->name() == font) {
 129                 mathcursor->handleFont(font);
 130                 bv->updateInset(this);
 131         } else {
 132                 bool sel = mathcursor->selection();
 133                 if (sel)
 134                         bv->updateInset(this);
 135                 mathcursor->handleNest(createMathInset(font));
 136                 mathcursor->insert(arg);
 137                 if (!sel)
 138                         bv->updateInset(this);
 139         }
 140 }
 141
 142
 143 BufferView * InsetFormulaBase::view() const
 144 {
 145         return view_.lock().get();
 146 }
 147
 148
 149 void InsetFormulaBase::validate(LaTeXFeatures &) const
 150 {}
 151
 152
 153 void InsetFormulaBase::metrics(BufferView * bv, LyXFont const & f) const
 154 {
 155         font_ = f;
 156         metrics(bv);
 157 }
 158
 159
 160 void InsetFormulaBase::metrics(BufferView * bv) const
 161 {
 162         if (bv)
 163                 view_ = bv->owner()->view();
 164         MathMetricsInfo mi;
 165         mi.base.style = LM_ST_TEXT;
 166         mi.base.font  = font_;
 167         mi.base.font.setColor(LColor::math);
 168         par()->metrics(mi);
 169 }
 170
 171
 172 string const InsetFormulaBase::editMessage() const
 173 {
 174         return _("Math editor mode");
 175 }
 176
 177
 178 void InsetFormulaBase::edit(BufferView * bv, int x, int y, mouse_button::state)
 179 {
 180         if (!bv->lockInset(this))
 181                 lyxerr[Debug::MATHED] << "Cannot lock inset!!!" << endl;
 182         releaseMathCursor(bv);
 183         mathcursor = new MathCursor(this, true);
 184         metrics(bv);
 185         mathcursor->setPos(x + xo_, y + yo_);
 186         // if that is removed, we won't get the magenta box when entering an
 187         // inset for the first time
 188         bv->updateInset(this);
 189 }
 190
 191
 192 void InsetFormulaBase::edit(BufferView * bv, bool front)
 193 {
 194         if (!bv->lockInset(this))
 195                 lyxerr << "Cannot lock math inset in edit call!\n";
 196         releaseMathCursor(bv);
 197         mathcursor = new MathCursor(this, front);
 198         metrics(bv);
 199         bv->updateInset(this);
 200 }
 201
 202
 203 void InsetFormulaBase::insetUnlock(BufferView * bv)
 204 {
 205         if (mathcursor) {
 206                 if (mathcursor->inMacroMode()) {
 207                         mathcursor->macroModeClose();
 208                         bv->updateInset(this);
 209                 }
 210                 releaseMathCursor(bv);
 211         }
 212         generatePreview();
 213         bv->updateInset(this);
 214 }
 215
 216
 217 void InsetFormulaBase::getCursorPos(BufferView *, int & x, int & y) const
 218 {
 219         // calling metrics here destroys the cached xo,yo positions e.g. in
 220         // MathParboxinset. And it would be too expensive anyway...
 221         //metrics(bv);
 222         if (!mathcursor) {
 223                 lyxerr << "getCursorPos - should not happen";
 224                 x = y = 0;
 225                 return;
 226         }
 227         mathcursor->getPos(x, y);
 228         x = mathcursor->targetX();
 229         x -= xo_;
 230         y -= yo_;
 231         //lyxerr << "getCursorPos: " << x << ' ' << y << endl;
 232 }
 233
 234
 235 void InsetFormulaBase::toggleInsetCursor(BufferView * bv)
 236 {
 237         if (!mathcursor) {
 238                 lyxerr[Debug::MATHED] << "toggleInsetCursor impossible" << endl;
 239                 return;
 240         }
 241         //lyxerr << "toggleInsetCursor: " << isCursorVisible() << endl;
 242         if (isCursorVisible())
 243                 hideInsetCursor(bv);
 244         else
 245                 showInsetCursor(bv);
 246 }
 247
 248
 249 void InsetFormulaBase::showInsetCursor(BufferView * bv, bool)
 250 {
 251         if (!mathcursor) {
 252                 lyxerr << "showInsetCursor impossible" << endl;
 253                 return;
 254         }
 255         if (isCursorVisible())
 256                 return;
 257         int x, y, asc, des;
 258         mathcursor->getPos(x, y);
 259         math_font_max_dim(font_, asc, des);
 260         bv->showLockedInsetCursor(x, y - yo_, asc, des);
 261         setCursorVisible(true);
 262         //lyxerr << "showInsetCursor: " << x << ' ' << y << endl;
 263 }
 264
 265
 266 void InsetFormulaBase::hideInsetCursor(BufferView * bv)
 267 {
 268         if (!mathcursor)
 269                 return;
 270         if (!isCursorVisible())
 271                 return;
 272         bv->hideLockedInsetCursor();
 273         setCursorVisible(false);
 274         //lyxerr << "hideInsetCursor: " << endl;
 275 }
 276
 277
 278 void InsetFormulaBase::fitInsetCursor(BufferView * bv) const
 279 {
 280         if (!mathcursor)
 281                 return;
 282         int x, y, asc, des;
 283         math_font_max_dim(font_, asc, des);
 284         getCursorPos(bv, x, y);
 285         //y += yo_;
 286         //lyxerr << "fitInsetCursor: x: " << x << " y: " << y << " yo: " << yo_ << endl;
 287         bv->fitLockedInsetCursor(x, y, asc, des);
 288 }
 289
 290
 291 void InsetFormulaBase::toggleInsetSelection(BufferView * bv)
 292 {
 293         if (mathcursor)
 294                 bv->updateInset(this);
 295 }
 296
 297
 298 vector<string> const InsetFormulaBase::getLabelList() const
 299 {
 300   return vector<string>();
 301 }
 302
 303
 304 dispatch_result InsetFormulaBase::lfunMouseRelease(FuncRequest const & cmd)
 305 {
 306         if (!mathcursor)
 307                 return UNDISPATCHED;
 308
 309         BufferView * bv = cmd.view();
 310         hideInsetCursor(bv);
 311         showInsetCursor(bv);
 312         bv->updateInset(this);
 313         //lyxerr << "lfunMouseRelease: buttons: " << cmd.button() << endl;
 314
 315         if (cmd.button() == mouse_button::button3) {
 316                 // try to dispatch to enclosed insets first
 317                 if (mathcursor->dispatch(cmd) == UNDISPATCHED) {
 318                         // launch math panel for right mouse button
 319                         lyxerr << "lfunMouseRelease: undispatched: " << cmd.button() << endl;
 320                         bv->owner()->getDialogs().showMathPanel();
 321                 }
 322                 return DISPATCHED;
 323         }
 324
 325         if (cmd.button() == mouse_button::button2) {
 326                 mathcursor->selClear();
 327                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 328                 mathcursor->insert(asArray(bv->getClipboard()));
 329                 bv->updateInset(this);
 330                 return DISPATCHED;
 331         }
 332
 333         if (cmd.button() == mouse_button::button1) {
 334                 // try to dispatch to enclosed insets first
 335                 mathcursor->dispatch(cmd);
 336                 cmd.view()->stuffClipboard(mathcursor->grabSelection());
 337                 // try to set the cursor
 338                 //delete mathcursor;
 339                 //mathcursor = new MathCursor(this, x == 0);
 340                 //metrics(bv);
 341                 //mathcursor->setPos(x + xo_, y + yo_);
 342                 return DISPATCHED;
 343         }
 344
 345         return UNDISPATCHED;
 346 }
 347
 348
 349 dispatch_result InsetFormulaBase::lfunMousePress(FuncRequest const & cmd)
 350 {
 351         BufferView * bv = cmd.view();
 352         //lyxerr << "lfunMousePress: buttons: " << cmd.button() << endl;
 353
 354         if (!mathcursor || mathcursor->formula() != this) {
 355                 lyxerr[Debug::MATHED] << "re-create cursor" << endl;
 356                 releaseMathCursor(bv);
 357                 mathcursor = new MathCursor(this, cmd.x == 0);
 358                 metrics(bv);
 359                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 360         }
 361
 362         if (cmd.button() == mouse_button::button3) {
 363                 mathcursor->dispatch(cmd);
 364                 return DISPATCHED;
 365         }
 366
 367         if (cmd.button() == mouse_button::button1) {
 368                 first_x = cmd.x;
 369                 first_y = cmd.y;
 370                 mathcursor->selClear();
 371                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 372                 mathcursor->dispatch(cmd);
 373                 return DISPATCHED;
 374         }
 375
 376         bv->updateInset(this);
 377         return DISPATCHED;
 378 }
 379
 380
 381 dispatch_result InsetFormulaBase::lfunMouseMotion(FuncRequest const & cmd)
 382 {
 383         if (!mathcursor)
 384                 return DISPATCHED;
 385
 386         if (mathcursor->dispatch(FuncRequest(cmd)) != UNDISPATCHED)
 387                 return DISPATCHED;
 388
 389         // only select with button 1
 390         if (cmd.button() != mouse_button::button1)
 391                 return DISPATCHED;
 392
 393         if (abs(cmd.x - first_x) < 2 && abs(cmd.y - first_y) < 2)
 394                 return DISPATCHED;
 395
 396         first_x = cmd.x;
 397         first_y = cmd.y;
 398
 399         if (!mathcursor->selection())
 400                 mathcursor->selStart();
 401
 402         BufferView * bv = cmd.view();
 403         hideInsetCursor(bv);
 404         mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 405         showInsetCursor(bv);
 406         bv->updateInset(this);
 407         return DISPATCHED;
 408 }
 409
 410
 411 dispatch_result InsetFormulaBase::localDispatch(FuncRequest const & cmd)
 412 {
 413         //lyxerr << "InsetFormulaBase::localDispatch: act: " << cmd.action
 414         //      << " arg: '" << cmd.argument
 415         //      << " x: '" << cmd.x
 416         //      << " y: '" << cmd.y
 417         //      << "' button: " << cmd.button() << endl;
 418
 419         // delete empty mathbox (LFUN_BACKSPACE and LFUN_DELETE)
 420         bool remove_inset = false;
 421
 422         switch (cmd.action) {
 423                 case LFUN_MOUSE_PRESS:
 424                         //lyxerr << "Mouse single press\n";
 425                         return lfunMousePress(cmd);
 426                 case LFUN_MOUSE_MOTION:
 427                         //return lfunMouseMotion(cmd);
 428                 case LFUN_MOUSE_RELEASE:
 429                         //lyxerr << "Mouse single release\n";
 430                         return lfunMouseRelease(cmd);
 431                 case LFUN_MOUSE_DOUBLE:
 432                         //lyxerr << "Mouse double\n";
 433                         return localDispatch(FuncRequest(LFUN_WORDSEL));
 434                 default:
 435                         break;
 436         }
 437
 438         if (!mathcursor)
 439                 return UNDISPATCHED;
 440
 441         BufferView * bv    = cmd.view();
 442         string argument    = cmd.argument;
 443         RESULT result      = DISPATCHED;
 444         bool sel           = false;
 445         bool was_macro     = mathcursor->inMacroMode();
 446         bool was_selection = mathcursor->selection();
 447
 448         hideInsetCursor(bv);
 449
 450         mathcursor->normalize();
 451         mathcursor->touch();
 452
 453         switch (cmd.action) {
 454
 455         case LFUN_MATH_MUTATE:
 456         case LFUN_MATH_DISPLAY:
 457         case LFUN_MATH_NUMBER:
 458         case LFUN_MATH_NONUMBER:
 459         case LFUN_TABINSERT:
 460         case LFUN_BREAKLINE:
 461         case LFUN_DELETE_LINE_FORWARD:
 462         case LFUN_INSERT_LABEL:
 463         case LFUN_MATH_EXTERN:
 464         case LFUN_TABULAR_FEATURE:
 465         case LFUN_PASTESELECTION:
 466         case LFUN_MATH_LIMITS:
 467                 bv->lockedInsetStoreUndo(Undo::EDIT);
 468                 mathcursor->dispatch(cmd);
 469                 bv->updateInset(this);
 470                 break;
 471
 472         case LFUN_RIGHTSEL:
 473                 sel = true; // fall through...
 474         case LFUN_RIGHT:
 475                 result = mathcursor->right(sel) ? DISPATCHED : FINISHED_RIGHT;
 476                 //lyxerr << "calling scroll 20\n";
 477                 //scroll(bv, 20);
 478                 bv->updateInset(this);
 479                 // write something to the minibuffer
 480                 //bv->owner()->message(mathcursor->info());
 481                 break;
 482
 483         case LFUN_LEFTSEL:
 484                 sel = true; // fall through
 485         case LFUN_LEFT:
 486                 result = mathcursor->left(sel) ? DISPATCHED : FINISHED;
 487                 bv->updateInset(this);
 488                 break;
 489
 490         case LFUN_UPSEL:
 491                 sel = true; // fall through
 492         case LFUN_UP:
 493                 result = mathcursor->up(sel) ? DISPATCHED : FINISHED_UP;
 494                 bv->updateInset(this);
 495                 break;
 496
 497         case LFUN_DOWNSEL:
 498                 sel = true; // fall through
 499         case LFUN_DOWN:
 500                 result = mathcursor->down(sel) ? DISPATCHED : FINISHED_DOWN;
 501                 bv->updateInset(this);
 502                 break;
 503
 504         case LFUN_WORDSEL:
 505                 mathcursor->home(false);
 506                 mathcursor->end(true);
 507                 bv->updateInset(this);
 508                 break;
 509
 510         case LFUN_UP_PARAGRAPHSEL:
 511         case LFUN_UP_PARAGRAPH:
 512         case LFUN_DOWN_PARAGRAPHSEL:
 513         case LFUN_DOWN_PARAGRAPH:
 514                 result = FINISHED;
 515                 bv->updateInset(this);
 516                 break;
 517
 518         case LFUN_HOMESEL:
 519         case LFUN_WORDLEFTSEL:
 520                 sel = true; // fall through
 521         case LFUN_HOME:
 522         case LFUN_WORDLEFT:
 523                 result = mathcursor->home(sel) ? DISPATCHED : FINISHED;
 524                 bv->updateInset(this);
 525                 break;
 526
 527         case LFUN_ENDSEL:
 528         case LFUN_WORDRIGHTSEL:
 529                 sel = true; // fall through
 530         case LFUN_END:
 531         case LFUN_WORDRIGHT:
 532                 result = mathcursor->end(sel) ? DISPATCHED : FINISHED_RIGHT;
 533                 bv->updateInset(this);
 534                 break;
 535
 536         case LFUN_PRIORSEL:
 537         case LFUN_PRIOR:
 538         case LFUN_BEGINNINGBUFSEL:
 539         case LFUN_BEGINNINGBUF:
 540                 result = FINISHED;
 541                 bv->updateInset(this);
 542                 break;
 543
 544         case LFUN_NEXTSEL:
 545         case LFUN_NEXT:
 546         case LFUN_ENDBUFSEL:
 547         case LFUN_ENDBUF:
 548                 result = FINISHED_RIGHT;
 549                 bv->updateInset(this);
 550                 break;
 551
 552         case LFUN_TAB:
 553                 mathcursor->idxNext();
 554                 bv->updateInset(this);
 555                 break;
 556
 557         case LFUN_SHIFT_TAB:
 558                 mathcursor->idxPrev();
 559                 bv->updateInset(this);
 560                 break;
 561
 562         case LFUN_DELETE_WORD_BACKWARD:
 563         case LFUN_BACKSPACE:
 564                 bv->lockedInsetStoreUndo(Undo::EDIT);
 565                 if (mathcursor->backspace()) {
 566                         result = DISPATCHED;
 567                 } else {
 568                         result = FINISHED;
 569                         remove_inset = true;
 570                 }
 571                 bv->updateInset(this);
 572                 break;
 573
 574         case LFUN_DELETE_WORD_FORWARD:
 575         case LFUN_DELETE:
 576                 bv->lockedInsetStoreUndo(Undo::EDIT);
 577                 if (mathcursor->erase()) {
 578                         result = DISPATCHED;
 579                 } else {
 580                         result = FINISHED;
 581                         remove_inset = true;
 582                 }
 583                 bv->updateInset(this);
 584                 break;
 585
 586         //    case LFUN_GETXY:
 587         //      sprintf(dispatch_buffer, "%d %d",);
 588         //      dispatch_result = dispatch_buffer;
 589         //      break;
 590         case LFUN_SETXY: {
 591                 lyxerr << "LFUN_SETXY broken!\n";
 592                 int x = 0;
 593                 int y = 0;
 594                 istringstream is(cmd.argument.c_str());
 595                 is >> x >> y;
 596                 mathcursor->setPos(x, y);
 597                 bv->updateInset(this);
 598                 break;
 599         }
 600
 601         case LFUN_PASTE:
 602                 if (was_macro)
 603                         mathcursor->macroModeClose();
 604                 bv->lockedInsetStoreUndo(Undo::EDIT);
 605                 mathcursor->selPaste();
 606                 bv->updateInset(this);
 607                 break;
 608
 609         case LFUN_CUT:
 610                 bv->lockedInsetStoreUndo(Undo::DELETE);
 611                 mathcursor->selCut();
 612                 bv->updateInset(this);
 613                 break;
 614
 615         case LFUN_COPY:
 616                 mathcursor->selCopy();
 617                 break;
 618
 619
 620         // Special casing for superscript in case of LyX handling
 621         // dead-keys:
 622         case LFUN_CIRCUMFLEX:
 623                 if (cmd.argument.empty()) {
 624                         // do superscript if LyX handles
 625                         // deadkeys
 626                         bv->lockedInsetStoreUndo(Undo::EDIT);
 627                         mathcursor->script(true);
 628                         bv->updateInset(this);
 629                 }
 630                 break;
 631
 632         case LFUN_UMLAUT:
 633         case LFUN_ACUTE:
 634         case LFUN_GRAVE:
 635         case LFUN_BREVE:
 636         case LFUN_DOT:
 637         case LFUN_MACRON:
 638         case LFUN_CARON:
 639         case LFUN_TILDE:
 640         case LFUN_CEDILLA:
 641         case LFUN_CIRCLE:
 642         case LFUN_UNDERDOT:
 643         case LFUN_TIE:
 644         case LFUN_OGONEK:
 645         case LFUN_HUNG_UMLAUT:
 646                 break;
 647
 648         //  Math fonts
 649         //case LFUN_GREEK_TOGGLE: handleFont(bv, cmd.argument, "lyxgreek"); break;
 650         case LFUN_BOLD:         handleFont(bv, cmd.argument, "mathbf"); break;
 651         case LFUN_SANS:         handleFont(bv, cmd.argument, "mathsf"); break;
 652         case LFUN_EMPH:         handleFont(bv, cmd.argument, "mathcal"); break;
 653         case LFUN_ROMAN:        handleFont(bv, cmd.argument, "mathrm"); break;
 654         case LFUN_CODE:         handleFont(bv, cmd.argument, "texttt"); break;
 655         case LFUN_FRAK:         handleFont(bv, cmd.argument, "mathfrak"); break;
 656         case LFUN_ITAL:         handleFont(bv, cmd.argument, "mathit"); break;
 657         case LFUN_NOUN:         handleFont(bv, cmd.argument, "mathbb"); break;
 658         case LFUN_FREEFONT_APPLY:  handleFont(bv, cmd.argument, "textrm"); break;
 659         case LFUN_DEFAULT:      handleFont(bv, cmd.argument, "textnormal"); break;
 660
 661         //case LFUN_GREEK:
 662         //      handleFont(bv, cmd.argument, "lyxgreek1");
 663         //      if (cmd.argument.size())
 664         //              mathcursor->insert(asArray(cmd.argument));
 665         //      break;
 666
 667         case LFUN_MATH_MODE:
 668                 if (mathcursor->currentMode() == MathInset::TEXT_MODE) {
 669                         mathcursor->niceInsert(MathAtom(new MathHullInset("simple")));
 670                         bv->updateInset(this);
 671                 } else {
 672                         handleFont(bv, cmd.argument, "textrm");
 673                 }
 674                 //bv->owner()->message(_("math text mode toggled"));
 675                 break;
 676
 677         case LFUN_MATH_SIZE:
 678 #if 0
 679                 if (!arg.empty()) {
 680                         bv->lockedInsetStoreUndo(Undo::EDIT);
 681                         mathcursor->setSize(arg);
 682                         bv->updateInset(this);
 683                 }
 684 #endif
 685                 break;
 686
 687         case LFUN_INSERT_MATRIX: {
 688                 bv->lockedInsetStoreUndo(Undo::EDIT);
 689                 unsigned int m = 1;
 690                 unsigned int n = 1;
 691                 string v_align;
 692                 string h_align;
 693                 istringstream is(STRCONV(argument));
 694                 is >> m >> n >> v_align >> h_align;
 695                 m = max(1u, m);
 696                 n = max(1u, n);
 697                 v_align += 'c';
 698                 mathcursor->niceInsert(
 699                         MathAtom(new MathArrayInset("array", m, n, v_align[0], h_align)));
 700                         bv->updateInset(this);
 701                 break;
 702         }
 703
 704         case LFUN_SUPERSCRIPT:
 705         case LFUN_SUBSCRIPT:
 706         {
 707                 bv->lockedInsetStoreUndo(Undo::EDIT);
 708                 mathcursor->script(cmd.action == LFUN_SUPERSCRIPT);
 709                 bv->updateInset(this);
 710                 break;
 711         }
 712
 713         case LFUN_MATH_DELIM:
 714         {
 715                 //lyxerr << "formulabase::LFUN_MATH_DELIM, arg: '" << arg << "'\n";
 716                 string ls;
 717                 string rs = split(cmd.argument, ls, ' ');
 718                 // Reasonable default values
 719                 if (ls.empty())
 720                         ls = '(';
 721                 if (rs.empty())
 722                         rs = ')';
 723
 724                 bv->lockedInsetStoreUndo(Undo::EDIT);
 725                 mathcursor->handleNest(MathAtom(new MathDelimInset(ls, rs)));
 726                 bv->updateInset(this);
 727                 break;
 728         }
 729
 730         case LFUN_PROTECTEDSPACE:
 731         case LFUN_MATH_SPACE:
 732                 bv->lockedInsetStoreUndo(Undo::EDIT);
 733                 mathcursor->insert(MathAtom(new MathSpaceInset(",")));
 734                 bv->updateInset(this);
 735                 break;
 736
 737         case LFUN_UNDO:
 738                 bv->owner()->message(_("Invalid action in math mode!"));
 739                 break;
 740
 741
 742         case LFUN_EXEC_COMMAND:
 743                 result = UNDISPATCHED;
 744                 break;
 745
 746         case LFUN_INSET_ERT:
 747                 // interpret this as if a backslash was typed
 748                 bv->lockedInsetStoreUndo(Undo::EDIT);
 749                 mathcursor->interpret('\\');
 750                 bv->updateInset(this);
 751                 break;
 752
 753         case LFUN_BREAKPARAGRAPH:
 754         case LFUN_BREAKPARAGRAPHKEEPLAYOUT:
 755         case LFUN_BREAKPARAGRAPH_SKIP:
 756                 argument = "\n";
 757                 // fall through
 758
 759 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
 760 // handling such that "self-insert" works on "arbitrary stuff" too, and
 761 // math-insert only handles special math things like "matrix".
 762         case LFUN_INSERT_MATH:
 763                 bv->lockedInsetStoreUndo(Undo::EDIT);
 764                 mathcursor->niceInsert(argument);
 765                 bv->updateInset(this);
 766                 break;
 767
 768         case -1:
 769         case LFUN_SELFINSERT:
 770                 if (!argument.empty()) {
 771                         bv->lockedInsetStoreUndo(Undo::EDIT);
 772                         if (argument.size() == 1)
 773                                 result = mathcursor->interpret(argument[0]) ? DISPATCHED : FINISHED_RIGHT;
 774                         else
 775                                 mathcursor->insert(asArray(argument));
 776                         bv->updateInset(this);
 777                 }
 778                 break;
 779
 780         case LFUN_MATH_PANEL:
 781                 result = UNDISPATCHED;
 782                 break;
 783
 784         case LFUN_ESCAPE:
 785                 if (mathcursor->selection())
 786                         mathcursor->selClear();
 787                 else
 788                         result = UNDISPATCHED;
 789                 break;
 790
 791         case LFUN_INSET_TOGGLE:
 792                 mathcursor->insetToggle();
 793                 bv->updateInset(this);
 794                 break;
 795
 796         case LFUN_DIALOG_SHOW_NEW_INSET: {
 797                 string const & name = argument;
 798                 string data;
 799                 if (name == "ref") {
 800                         RefInset tmp(name);
 801                         data = tmp.createDialogStr(name);
 802                 }
 803
 804                 if (data.empty())
 805                         result = UNDISPATCHED;
 806                 else {
 807                         bv->owner()->getDialogs().show(name, data, 0);
 808                 }
 809         }
 810         break;
 811
 812         case LFUN_INSET_APPLY: {
 813                 string const name = cmd.getArg(0);
 814                 InsetBase * base =
 815                         bv->owner()->getDialogs().getOpenInset(name);
 816
 817                 if (base) {
 818                         FuncRequest fr(bv, LFUN_INSET_MODIFY, cmd.argument);
 819                         result = base->localDispatch(fr);
 820                 } else {
 821                         MathArray ar;
 822                         if (createMathInset_fromDialogStr(cmd.argument, ar)) {
 823                                 mathcursor->insert(ar);
 824                                 result = DISPATCHED;
 825                         } else {
 826                                 result = UNDISPATCHED;
 827                         }
 828                 }
 829                 if (result == DISPATCHED)
 830                         bv->updateInset(this);
 831         }
 832         break;
 833
 834         default:
 835                 result = UNDISPATCHED;
 836         }
 837
 838         mathcursor->normalize();
 839         mathcursor->touch();
 840
 841         lyx::Assert(mathcursor);
 842
 843         if (mathcursor->selection() || was_selection)
 844                 toggleInsetSelection(bv);
 845
 846         if (result == DISPATCHED || result == DISPATCHED_NOUPDATE ||
 847             result == UNDISPATCHED) {
 848                 fitInsetCursor(bv);
 849                 showInsetCursor(bv);
 850                 revealCodes(bv);
 851                 cmd.view()->stuffClipboard(mathcursor->grabSelection());
 852         } else {
 853                 releaseMathCursor(bv);
 854                 bv->unlockInset(this);
 855                 if (remove_inset)
 856                         bv->owner()->dispatch(FuncRequest(LFUN_DELETE));
 857         }
 858
 859         return result;  // original version
 860 }
 861
 862
 863 void InsetFormulaBase::revealCodes(BufferView * bv) const
 864 {
 865         if (!mathcursor)
 866                 return;
 867         bv->owner()->message(mathcursor->info());
 868
 869 #if 0
 870         // write something to the minibuffer
 871         // translate to latex
 872         mathcursor->markInsert();
 873         ostringstream os;
 874         write(NULL, os);
 875         string str = os.str();
 876         mathcursor->markErase();
 877         string::size_type pos = 0;
 878         string res;
 879         for (string::iterator it = str.begin(); it != str.end(); ++it) {
 880                 if (*it == '\n')
 881                         res += ' ';
 882                 else if (*it == '\0') {
 883                         res += "  -X-  ";
 884                         pos = it - str.begin();
 885                 }
 886                 else
 887                         res += *it;
 888         }
 889         if (pos > 30)
 890                 res = res.substr(pos - 30);
 891         if (res.size() > 60)
 892                 res = res.substr(0, 60);
 893         bv->owner()->message(res);
 894 #endif
 895 }
 896
 897
 898 Inset::Code InsetFormulaBase::lyxCode() const
 899 {
 900         return Inset::MATH_CODE;
 901 }
 902
 903
 904 int InsetFormulaBase::ylow() const
 905 {
 906         return yo_ - ascent(view(), font_);
 907 }
 908
 909
 910 int InsetFormulaBase::yhigh() const
 911 {
 912         return yo_ + descent(view(), font_);
 913 }
 914
 915
 916 int InsetFormulaBase::xlow() const
 917 {
 918         return xo_;
 919 }
 920
 921
 922 int InsetFormulaBase::xhigh() const
 923 {
 924         return xo_ + width(view(), font_);
 925 }
 926
 927
 928 /////////////////////////////////////////////////////////////////////
 929
 930
 931 bool InsetFormulaBase::searchForward(BufferView * bv, string const & str,
 932                                      bool, bool)
 933 {
 934 #ifdef WITH_WARNINGS
 935 #warning pretty ugly
 936 #endif
 937         static InsetFormulaBase * lastformula = 0;
 938         static MathIterator current = MathIterator(ibegin(par().nucleus()));
 939         static MathArray ar;
 940         static string laststr;
 941
 942         if (lastformula != this || laststr != str) {
 943                 //lyxerr << "reset lastformula to " << this << "\n";
 944                 lastformula = this;
 945                 laststr = str;
 946                 current = ibegin(par().nucleus());
 947                 ar.clear();
 948                 mathed_parse_cell(ar, str);
 949         } else {
 950                 ++current;
 951         }
 952         //lyxerr << "searching '" << str << "' in " << this << ar << endl;
 953
 954         for (MathIterator it = current; it != iend(par().nucleus()); ++it) {
 955                 if (it.cell().matchpart(ar, it.back().pos_)) {
 956                         bv->unlockInset(bv->theLockingInset());
 957                         if (!bv->lockInset(this)) {
 958                                 lyxerr << "Cannot lock inset" << endl;
 959                                 return false;
 960                         }
 961                         delete mathcursor;
 962                         mathcursor = new MathCursor(this, true);
 963                         metrics(bv);
 964                         mathcursor->setSelection(it, ar.size());
 965                         current = it;
 966                         it.jump(ar.size());
 967                         bv->updateInset(this);
 968                         return true;
 969                 }
 970         }
 971
 972         //lyxerr << "not found!\n";
 973         lastformula = 0;
 974         return false;
 975 }
 976
 977
 978 bool InsetFormulaBase::searchBackward(BufferView * bv, string const & what,
 979                                       bool a, bool b)
 980 {
 981         lyxerr[Debug::MATHED] << "searching backward not implemented in mathed\n";
 982         return searchForward(bv, what, a, b);
 983 }
 984
 985
 986 bool InsetFormulaBase::display() const
 987 {
 988         return par()->asHullInset() && par()->asHullInset()->display();
 989 }
 990
 991
 992 string InsetFormulaBase::selectionAsString() const
 993 {
 994         return mathcursor ? mathcursor->grabSelection() : string();
 995 }
 996
 997 /////////////////////////////////////////////////////////////////////
 998
 999
1000 void mathDispatchCreation(FuncRequest const & cmd, bool display)
1001 {
1002         BufferView * bv = cmd.view();
1003         // use selection if available..
1004         //string sel;
1005         //if (action == LFUN_MATH_IMPORT_SELECTION)
1006         //      sel = "";
1007         //else
1008
1009         string sel = bv->getLyXText()->selectionAsString(bv->buffer(), false);
1010
1011         if (sel.empty()) {
1012                 InsetFormula * f = new InsetFormula(bv);
1013                 if (openNewInset(bv, f)) {
1014                         bv->theLockingInset()->
1015                                 localDispatch(FuncRequest(bv, LFUN_MATH_MUTATE, "simple"));
1016                         // don't do that also for LFUN_MATH_MODE unless you want end up with
1017                         // always changing to mathrm when opening an inlined inset
1018                         // -- I really hate "LyXfunc overloading"...
1019                         if (display)
1020                                 f->localDispatch(FuncRequest(bv, LFUN_MATH_DISPLAY));
1021                         f->localDispatch(FuncRequest(bv, LFUN_INSERT_MATH, cmd.argument));
1022                 }
1023         } else {
1024                 // create a macro if we see "\\newcommand" somewhere, and an ordinary
1025                 // formula otherwise
1026                 InsetFormulaBase * f;
1027                 if (sel.find("\\newcommand") == string::npos &&
1028                                 sel.find("\\def") == string::npos)
1029                         f = new InsetFormula(sel);
1030                 else
1031                         f = new InsetFormulaMacro(sel);
1032                 bv->getLyXText()->cutSelection(bv);
1033                 openNewInset(bv, f);
1034         }
1035         cmd.message(N_("Math editor mode"));
1036 }
1037
1038
1039 void mathDispatch(FuncRequest const & cmd)
1040 {
1041         BufferView * bv = cmd.view();
1042         if (!bv->available())
1043                 return;
1044
1045         switch (cmd.action) {
1046
1047                 case LFUN_MATH_DISPLAY:
1048                         mathDispatchCreation(cmd, true);
1049                         break;
1050
1051                 case LFUN_MATH_MODE:
1052                         mathDispatchCreation(cmd, false);
1053                         break;
1054
1055                 case LFUN_MATH_IMPORT_SELECTION:
1056                         mathDispatchCreation(cmd, false);
1057                         break;
1058
1059                 case LFUN_MATH_MACRO:
1060                         if (cmd.argument.empty())
1061                                 cmd.errorMessage(N_("Missing argument"));
1062                         else {
1063                                 string s = cmd.argument;
1064                                 string const s1 = token(s, ' ', 1);
1065                                 int const na = s1.empty() ? 0 : lyx::atoi(s1);
1066                                 openNewInset(bv, new InsetFormulaMacro(token(s, ' ', 0), na));
1067                         }
1068                         break;
1069
1070                 case LFUN_GREEK:
1071                 case LFUN_INSERT_MATH:
1072                 case LFUN_INSERT_MATRIX:
1073                 case LFUN_MATH_DELIM: {
1074                         InsetFormula * f = new InsetFormula(bv);
1075                         if (openNewInset(bv, f)) {
1076                                 bv->theLockingInset()->
1077                                         localDispatch(FuncRequest(bv, LFUN_MATH_MUTATE, "simple"));
1078                                 bv->theLockingInset()->localDispatch(cmd);
1079                         }
1080                         break;
1081                 }
1082                 default:
1083                         break;
1084         }
1085 }