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                 updateLocal(bv, true);
 131         } else {
 132                 bool sel = mathcursor->selection();
 133                 if (sel)
 134                         updateLocal(bv, true);
 135                 mathcursor->handleNest(createMathInset(font));
 136                 mathcursor->insert(arg);
 137                 if (!sel)
 138                         updateLocal(bv, false);
 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, false);
 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, false);
 200 }
 201
 202
 203 void InsetFormulaBase::insetUnlock(BufferView * bv)
 204 {
 205         if (mathcursor) {
 206                 if (mathcursor->inMacroMode()) {
 207                         mathcursor->macroModeClose();
 208                         updateLocal(bv, true);
 209                 }
 210                 releaseMathCursor(bv);
 211         }
 212         generatePreview();
 213         bv->updateInset(this, false);
 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, false);
 295 }
 296
 297
 298 vector<string> const InsetFormulaBase::getLabelList() const
 299 {
 300   return vector<string>();
 301 }
 302
 303
 304 void InsetFormulaBase::updateLocal(BufferView * bv, bool dirty)
 305 {
 306         bv->updateInset(this, dirty);
 307 }
 308
 309
 310 dispatch_result InsetFormulaBase::lfunMouseRelease(FuncRequest const & cmd)
 311 {
 312         if (!mathcursor)
 313                 return UNDISPATCHED;
 314
 315         BufferView * bv = cmd.view();
 316         hideInsetCursor(bv);
 317         showInsetCursor(bv);
 318         bv->updateInset(this, false);
 319         //lyxerr << "lfunMouseRelease: buttons: " << cmd.button() << endl;
 320
 321         if (cmd.button() == mouse_button::button3) {
 322                 // try to dispatch to enclosed insets first
 323                 if (mathcursor->dispatch(cmd) == UNDISPATCHED) {
 324                         // launch math panel for right mouse button
 325                         lyxerr << "lfunMouseRelease: undispatched: " << cmd.button() << endl;
 326                         bv->owner()->getDialogs().showMathPanel();
 327                 }
 328                 return DISPATCHED;
 329         }
 330
 331         if (cmd.button() == mouse_button::button2) {
 332                 mathcursor->selClear();
 333                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 334                 mathcursor->insert(asArray(bv->getClipboard()));
 335                 bv->updateInset(this, true);
 336                 return DISPATCHED;
 337         }
 338
 339         if (cmd.button() == mouse_button::button1) {
 340                 // try to dispatch to enclosed insets first
 341                 mathcursor->dispatch(cmd);
 342                 cmd.view()->stuffClipboard(mathcursor->grabSelection());
 343                 // try to set the cursor
 344                 //delete mathcursor;
 345                 //mathcursor = new MathCursor(this, x == 0);
 346                 //metrics(bv);
 347                 //mathcursor->setPos(x + xo_, y + yo_);
 348                 return DISPATCHED;
 349         }
 350
 351         return UNDISPATCHED;
 352 }
 353
 354
 355 dispatch_result InsetFormulaBase::lfunMousePress(FuncRequest const & cmd)
 356 {
 357         BufferView * bv = cmd.view();
 358         //lyxerr << "lfunMousePress: buttons: " << cmd.button() << endl;
 359
 360         if (!mathcursor || mathcursor->formula() != this) {
 361                 lyxerr[Debug::MATHED] << "re-create cursor" << endl;
 362                 releaseMathCursor(bv);
 363                 mathcursor = new MathCursor(this, cmd.x == 0);
 364                 metrics(bv);
 365                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 366         }
 367
 368         if (cmd.button() == mouse_button::button3) {
 369                 mathcursor->dispatch(cmd);
 370                 return DISPATCHED;
 371         }
 372
 373         if (cmd.button() == mouse_button::button1) {
 374                 first_x = cmd.x;
 375                 first_y = cmd.y;
 376                 mathcursor->selClear();
 377                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 378                 mathcursor->dispatch(cmd);
 379                 return DISPATCHED;
 380         }
 381
 382         bv->updateInset(this, false);
 383         return DISPATCHED;
 384 }
 385
 386
 387 dispatch_result InsetFormulaBase::lfunMouseMotion(FuncRequest const & cmd)
 388 {
 389         if (!mathcursor)
 390                 return DISPATCHED;
 391
 392         if (mathcursor->dispatch(FuncRequest(cmd)) != UNDISPATCHED)
 393                 return DISPATCHED;
 394
 395         // only select with button 1
 396         if (cmd.button() != mouse_button::button1)
 397                 return DISPATCHED;
 398
 399         if (abs(cmd.x - first_x) < 2 && abs(cmd.y - first_y) < 2)
 400                 return DISPATCHED;
 401
 402         first_x = cmd.x;
 403         first_y = cmd.y;
 404
 405         if (!mathcursor->selection())
 406                 mathcursor->selStart();
 407
 408         BufferView * bv = cmd.view();
 409         hideInsetCursor(bv);
 410         mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 411         showInsetCursor(bv);
 412         bv->updateInset(this, false);
 413         return DISPATCHED;
 414 }
 415
 416
 417 dispatch_result InsetFormulaBase::localDispatch(FuncRequest const & cmd)
 418 {
 419         //lyxerr << "InsetFormulaBase::localDispatch: act: " << cmd.action
 420         //      << " arg: '" << cmd.argument
 421         //      << " x: '" << cmd.x
 422         //      << " y: '" << cmd.y
 423         //      << "' button: " << cmd.button() << endl;
 424
 425         // delete empty mathbox (LFUN_BACKSPACE and LFUN_DELETE)
 426         bool remove_inset = false;
 427
 428         switch (cmd.action) {
 429                 case LFUN_MOUSE_PRESS:
 430                         //lyxerr << "Mouse single press\n";
 431                         return lfunMousePress(cmd);
 432                 case LFUN_MOUSE_MOTION:
 433                         //return lfunMouseMotion(cmd);
 434                 case LFUN_MOUSE_RELEASE:
 435                         //lyxerr << "Mouse single release\n";
 436                         return lfunMouseRelease(cmd);
 437                 case LFUN_MOUSE_DOUBLE:
 438                         //lyxerr << "Mouse double\n";
 439                         return localDispatch(FuncRequest(LFUN_WORDSEL));
 440                 default:
 441                         break;
 442         }
 443
 444         if (!mathcursor)
 445                 return UNDISPATCHED;
 446
 447         BufferView * bv    = cmd.view();
 448         string argument    = cmd.argument;
 449         RESULT result      = DISPATCHED;
 450         bool sel           = false;
 451         bool was_macro     = mathcursor->inMacroMode();
 452         bool was_selection = mathcursor->selection();
 453
 454         hideInsetCursor(bv);
 455
 456         mathcursor->normalize();
 457         mathcursor->touch();
 458
 459         switch (cmd.action) {
 460
 461         case LFUN_MATH_MUTATE:
 462         case LFUN_MATH_DISPLAY:
 463         case LFUN_MATH_NUMBER:
 464         case LFUN_MATH_NONUMBER:
 465         case LFUN_TABINSERT:
 466         case LFUN_BREAKLINE:
 467         case LFUN_DELETE_LINE_FORWARD:
 468         case LFUN_INSERT_LABEL:
 469         case LFUN_MATH_EXTERN:
 470         case LFUN_TABULAR_FEATURE:
 471         case LFUN_PASTESELECTION:
 472         case LFUN_MATH_LIMITS:
 473                 bv->lockedInsetStoreUndo(Undo::EDIT);
 474                 mathcursor->dispatch(cmd);
 475                 updateLocal(bv, true);
 476                 break;
 477
 478         case LFUN_RIGHTSEL:
 479                 sel = true; // fall through...
 480         case LFUN_RIGHT:
 481                 result = mathcursor->right(sel) ? DISPATCHED : FINISHED_RIGHT;
 482                 //lyxerr << "calling scroll 20\n";
 483                 //scroll(bv, 20);
 484                 updateLocal(bv, false);
 485                 // write something to the minibuffer
 486                 //bv->owner()->message(mathcursor->info());
 487                 break;
 488
 489         case LFUN_LEFTSEL:
 490                 sel = true; // fall through
 491         case LFUN_LEFT:
 492                 result = mathcursor->left(sel) ? DISPATCHED : FINISHED;
 493                 updateLocal(bv, false);
 494                 break;
 495
 496         case LFUN_UPSEL:
 497                 sel = true; // fall through
 498         case LFUN_UP:
 499                 result = mathcursor->up(sel) ? DISPATCHED : FINISHED_UP;
 500                 updateLocal(bv, false);
 501                 break;
 502
 503         case LFUN_DOWNSEL:
 504                 sel = true; // fall through
 505         case LFUN_DOWN:
 506                 result = mathcursor->down(sel) ? DISPATCHED : FINISHED_DOWN;
 507                 updateLocal(bv, false);
 508                 break;
 509
 510         case LFUN_WORDSEL:
 511                 mathcursor->home(false);
 512                 mathcursor->end(true);
 513                 updateLocal(bv, false);
 514                 break;
 515
 516         case LFUN_UP_PARAGRAPHSEL:
 517         case LFUN_UP_PARAGRAPH:
 518         case LFUN_DOWN_PARAGRAPHSEL:
 519         case LFUN_DOWN_PARAGRAPH:
 520                 result = FINISHED;
 521                 updateLocal(bv, false);
 522                 break;
 523
 524         case LFUN_HOMESEL:
 525         case LFUN_WORDLEFTSEL:
 526                 sel = true; // fall through
 527         case LFUN_HOME:
 528         case LFUN_WORDLEFT:
 529                 result = mathcursor->home(sel) ? DISPATCHED : FINISHED;
 530                 updateLocal(bv, false);
 531                 break;
 532
 533         case LFUN_ENDSEL:
 534         case LFUN_WORDRIGHTSEL:
 535                 sel = true; // fall through
 536         case LFUN_END:
 537         case LFUN_WORDRIGHT:
 538                 result = mathcursor->end(sel) ? DISPATCHED : FINISHED_RIGHT;
 539                 updateLocal(bv, false);
 540                 break;
 541
 542         case LFUN_PRIORSEL:
 543         case LFUN_PRIOR:
 544         case LFUN_BEGINNINGBUFSEL:
 545         case LFUN_BEGINNINGBUF:
 546                 result = FINISHED;
 547                 updateLocal(bv, false);
 548                 break;
 549
 550         case LFUN_NEXTSEL:
 551         case LFUN_NEXT:
 552         case LFUN_ENDBUFSEL:
 553         case LFUN_ENDBUF:
 554                 result = FINISHED_RIGHT;
 555                 updateLocal(bv, false);
 556                 break;
 557
 558         case LFUN_TAB:
 559                 mathcursor->idxNext();
 560                 updateLocal(bv, false);
 561                 break;
 562
 563         case LFUN_SHIFT_TAB:
 564                 mathcursor->idxPrev();
 565                 updateLocal(bv, false);
 566                 break;
 567
 568         case LFUN_DELETE_WORD_BACKWARD:
 569         case LFUN_BACKSPACE:
 570                 bv->lockedInsetStoreUndo(Undo::EDIT);
 571                 if (mathcursor->backspace()) {
 572                         result = DISPATCHED;
 573                 } else {
 574                         result = FINISHED;
 575                         remove_inset = true;
 576                 }
 577                 updateLocal(bv, true);
 578                 break;
 579
 580         case LFUN_DELETE_WORD_FORWARD:
 581         case LFUN_DELETE:
 582                 bv->lockedInsetStoreUndo(Undo::EDIT);
 583                 if (mathcursor->erase()) {
 584                         result = DISPATCHED;
 585                 } else {
 586                         result = FINISHED;
 587                         remove_inset = true;
 588                 }
 589                 updateLocal(bv, true);
 590                 break;
 591
 592         //    case LFUN_GETXY:
 593         //      sprintf(dispatch_buffer, "%d %d",);
 594         //      dispatch_result = dispatch_buffer;
 595         //      break;
 596         case LFUN_SETXY: {
 597                 lyxerr << "LFUN_SETXY broken!\n";
 598                 int x = 0;
 599                 int y = 0;
 600                 istringstream is(cmd.argument.c_str());
 601                 is >> x >> y;
 602                 mathcursor->setPos(x, y);
 603                 updateLocal(bv, false);
 604                 break;
 605         }
 606
 607         case LFUN_PASTE:
 608                 if (was_macro)
 609                         mathcursor->macroModeClose();
 610                 bv->lockedInsetStoreUndo(Undo::EDIT);
 611                 mathcursor->selPaste();
 612                 updateLocal(bv, true);
 613                 break;
 614
 615         case LFUN_CUT:
 616                 bv->lockedInsetStoreUndo(Undo::DELETE);
 617                 mathcursor->selCut();
 618                 updateLocal(bv, true);
 619                 break;
 620
 621         case LFUN_COPY:
 622                 mathcursor->selCopy();
 623                 break;
 624
 625
 626         // Special casing for superscript in case of LyX handling
 627         // dead-keys:
 628         case LFUN_CIRCUMFLEX:
 629                 if (cmd.argument.empty()) {
 630                         // do superscript if LyX handles
 631                         // deadkeys
 632                         bv->lockedInsetStoreUndo(Undo::EDIT);
 633                         mathcursor->script(true);
 634                         updateLocal(bv, true);
 635                 }
 636                 break;
 637
 638         case LFUN_UMLAUT:
 639         case LFUN_ACUTE:
 640         case LFUN_GRAVE:
 641         case LFUN_BREVE:
 642         case LFUN_DOT:
 643         case LFUN_MACRON:
 644         case LFUN_CARON:
 645         case LFUN_TILDE:
 646         case LFUN_CEDILLA:
 647         case LFUN_CIRCLE:
 648         case LFUN_UNDERDOT:
 649         case LFUN_TIE:
 650         case LFUN_OGONEK:
 651         case LFUN_HUNG_UMLAUT:
 652                 break;
 653
 654         //  Math fonts
 655         //case LFUN_GREEK_TOGGLE: handleFont(bv, cmd.argument, "lyxgreek"); break;
 656         case LFUN_BOLD:         handleFont(bv, cmd.argument, "mathbf"); break;
 657         case LFUN_SANS:         handleFont(bv, cmd.argument, "mathsf"); break;
 658         case LFUN_EMPH:         handleFont(bv, cmd.argument, "mathcal"); break;
 659         case LFUN_ROMAN:        handleFont(bv, cmd.argument, "mathrm"); break;
 660         case LFUN_CODE:         handleFont(bv, cmd.argument, "texttt"); break;
 661         case LFUN_FRAK:         handleFont(bv, cmd.argument, "mathfrak"); break;
 662         case LFUN_ITAL:         handleFont(bv, cmd.argument, "mathit"); break;
 663         case LFUN_NOUN:         handleFont(bv, cmd.argument, "mathbb"); break;
 664         case LFUN_FREEFONT_APPLY:  handleFont(bv, cmd.argument, "textrm"); break;
 665         case LFUN_DEFAULT:      handleFont(bv, cmd.argument, "textnormal"); break;
 666
 667         //case LFUN_GREEK:
 668         //      handleFont(bv, cmd.argument, "lyxgreek1");
 669         //      if (cmd.argument.size())
 670         //              mathcursor->insert(asArray(cmd.argument));
 671         //      break;
 672
 673         case LFUN_MATH_MODE:
 674                 if (mathcursor->currentMode() == MathInset::TEXT_MODE) {
 675                         mathcursor->niceInsert(MathAtom(new MathHullInset("simple")));
 676                         updateLocal(bv, true);
 677                 } else {
 678                         handleFont(bv, cmd.argument, "textrm");
 679                 }
 680                 //bv->owner()->message(_("math text mode toggled"));
 681                 break;
 682
 683         case LFUN_MATH_SIZE:
 684 #if 0
 685                 if (!arg.empty()) {
 686                         bv->lockedInsetStoreUndo(Undo::EDIT);
 687                         mathcursor->setSize(arg);
 688                         updateLocal(bv, true);
 689                 }
 690 #endif
 691                 break;
 692
 693         case LFUN_INSERT_MATRIX: {
 694                 bv->lockedInsetStoreUndo(Undo::EDIT);
 695                 unsigned int m = 1;
 696                 unsigned int n = 1;
 697                 string v_align;
 698                 string h_align;
 699                 istringstream is(STRCONV(argument));
 700                 is >> m >> n >> v_align >> h_align;
 701                 m = max(1u, m);
 702                 n = max(1u, n);
 703                 v_align += 'c';
 704                 mathcursor->niceInsert(
 705                         MathAtom(new MathArrayInset("array", m, n, v_align[0], h_align)));
 706                         updateLocal(bv, true);
 707                 break;
 708         }
 709
 710         case LFUN_SUPERSCRIPT:
 711         case LFUN_SUBSCRIPT:
 712         {
 713                 bv->lockedInsetStoreUndo(Undo::EDIT);
 714                 mathcursor->script(cmd.action == LFUN_SUPERSCRIPT);
 715                 updateLocal(bv, true);
 716                 break;
 717         }
 718
 719         case LFUN_MATH_DELIM:
 720         {
 721                 //lyxerr << "formulabase::LFUN_MATH_DELIM, arg: '" << arg << "'\n";
 722                 string ls;
 723                 string rs = split(cmd.argument, ls, ' ');
 724                 // Reasonable default values
 725                 if (ls.empty())
 726                         ls = '(';
 727                 if (rs.empty())
 728                         rs = ')';
 729
 730                 bv->lockedInsetStoreUndo(Undo::EDIT);
 731                 mathcursor->handleNest(MathAtom(new MathDelimInset(ls, rs)));
 732                 updateLocal(bv, true);
 733                 break;
 734         }
 735
 736         case LFUN_PROTECTEDSPACE:
 737         case LFUN_MATH_SPACE:
 738                 bv->lockedInsetStoreUndo(Undo::EDIT);
 739                 mathcursor->insert(MathAtom(new MathSpaceInset(",")));
 740                 updateLocal(bv, true);
 741                 break;
 742
 743         case LFUN_UNDO:
 744                 bv->owner()->message(_("Invalid action in math mode!"));
 745                 break;
 746
 747
 748         case LFUN_EXEC_COMMAND:
 749                 result = UNDISPATCHED;
 750                 break;
 751
 752         case LFUN_INSET_ERT:
 753                 // interpret this as if a backslash was typed
 754                 bv->lockedInsetStoreUndo(Undo::EDIT);
 755                 mathcursor->interpret('\\');
 756                 updateLocal(bv, true);
 757                 break;
 758
 759         case LFUN_BREAKPARAGRAPH:
 760         case LFUN_BREAKPARAGRAPHKEEPLAYOUT:
 761         case LFUN_BREAKPARAGRAPH_SKIP:
 762                 argument = "\n";
 763                 // fall through
 764
 765 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
 766 // handling such that "self-insert" works on "arbitrary stuff" too, and
 767 // math-insert only handles special math things like "matrix".
 768         case LFUN_INSERT_MATH:
 769                 bv->lockedInsetStoreUndo(Undo::EDIT);
 770                 mathcursor->niceInsert(argument);
 771                 updateLocal(bv, true);
 772                 break;
 773
 774         case -1:
 775         case LFUN_SELFINSERT:
 776                 if (!argument.empty()) {
 777                         bv->lockedInsetStoreUndo(Undo::EDIT);
 778                         if (argument.size() == 1)
 779                                 result = mathcursor->interpret(argument[0]) ? DISPATCHED : FINISHED_RIGHT;
 780                         else
 781                                 mathcursor->insert(asArray(argument));
 782                         updateLocal(bv, true);
 783                 }
 784                 break;
 785
 786         case LFUN_MATH_PANEL:
 787                 result = UNDISPATCHED;
 788                 break;
 789
 790         case LFUN_ESCAPE:
 791                 if (mathcursor->selection())
 792                         mathcursor->selClear();
 793                 else
 794                         result = UNDISPATCHED;
 795                 break;
 796
 797         case LFUN_INSET_TOGGLE:
 798                 mathcursor->insetToggle();
 799                 updateLocal(bv, true);
 800                 break;
 801
 802         case LFUN_DIALOG_SHOW_NEW_INSET: {
 803                 string const & name = argument;
 804                 string data;
 805                 if (name == "ref") {
 806                         RefInset tmp(name);
 807                         data = tmp.createDialogStr(name);
 808                 }
 809
 810                 if (data.empty())
 811                         result = UNDISPATCHED;
 812                 else {
 813                         bv->owner()->getDialogs().show(name, data, 0);
 814                 }
 815         }
 816         break;
 817
 818         case LFUN_INSET_APPLY: {
 819                 string const name = cmd.getArg(0);
 820                 InsetBase * base =
 821                         bv->owner()->getDialogs().getOpenInset(name);
 822
 823                 if (base) {
 824                         FuncRequest fr(bv, LFUN_INSET_MODIFY, cmd.argument);
 825                         result = base->localDispatch(fr);
 826                 } else {
 827                         MathArray ar;
 828                         if (createMathInset_fromDialogStr(cmd.argument, ar)) {
 829                                 mathcursor->insert(ar);
 830                                 result = DISPATCHED;
 831                         } else {
 832                                 result = UNDISPATCHED;
 833                         }
 834                 }
 835                 if (result == DISPATCHED)
 836                         updateLocal(bv, true);
 837         }
 838         break;
 839
 840         default:
 841                 result = UNDISPATCHED;
 842         }
 843
 844         mathcursor->normalize();
 845         mathcursor->touch();
 846
 847         lyx::Assert(mathcursor);
 848
 849         if (mathcursor->selection() || was_selection)
 850                 toggleInsetSelection(bv);
 851
 852         if (result == DISPATCHED || result == DISPATCHED_NOUPDATE ||
 853             result == UNDISPATCHED) {
 854                 fitInsetCursor(bv);
 855                 showInsetCursor(bv);
 856                 revealCodes(bv);
 857                 cmd.view()->stuffClipboard(mathcursor->grabSelection());
 858         } else {
 859                 releaseMathCursor(bv);
 860                 bv->unlockInset(this);
 861                 if (remove_inset)
 862                         bv->owner()->dispatch(FuncRequest(LFUN_DELETE));
 863         }
 864
 865         return result;  // original version
 866 }
 867
 868
 869 void InsetFormulaBase::revealCodes(BufferView * bv) const
 870 {
 871         if (!mathcursor)
 872                 return;
 873         bv->owner()->message(mathcursor->info());
 874
 875 #if 0
 876         // write something to the minibuffer
 877         // translate to latex
 878         mathcursor->markInsert();
 879         ostringstream os;
 880         write(NULL, os);
 881         string str = os.str();
 882         mathcursor->markErase();
 883         string::size_type pos = 0;
 884         string res;
 885         for (string::iterator it = str.begin(); it != str.end(); ++it) {
 886                 if (*it == '\n')
 887                         res += ' ';
 888                 else if (*it == '\0') {
 889                         res += "  -X-  ";
 890                         pos = it - str.begin();
 891                 }
 892                 else
 893                         res += *it;
 894         }
 895         if (pos > 30)
 896                 res = res.substr(pos - 30);
 897         if (res.size() > 60)
 898                 res = res.substr(0, 60);
 899         bv->owner()->message(res);
 900 #endif
 901 }
 902
 903
 904 Inset::Code InsetFormulaBase::lyxCode() const
 905 {
 906         return Inset::MATH_CODE;
 907 }
 908
 909
 910 int InsetFormulaBase::ylow() const
 911 {
 912         return yo_ - ascent(view(), font_);
 913 }
 914
 915
 916 int InsetFormulaBase::yhigh() const
 917 {
 918         return yo_ + descent(view(), font_);
 919 }
 920
 921
 922 int InsetFormulaBase::xlow() const
 923 {
 924         return xo_;
 925 }
 926
 927
 928 int InsetFormulaBase::xhigh() const
 929 {
 930         return xo_ + width(view(), font_);
 931 }
 932
 933
 934 /////////////////////////////////////////////////////////////////////
 935
 936
 937 bool InsetFormulaBase::searchForward(BufferView * bv, string const & str,
 938                                      bool, bool)
 939 {
 940 #ifdef WITH_WARNINGS
 941 #warning pretty ugly
 942 #endif
 943         static InsetFormulaBase * lastformula = 0;
 944         static MathIterator current = MathIterator(ibegin(par().nucleus()));
 945         static MathArray ar;
 946         static string laststr;
 947
 948         if (lastformula != this || laststr != str) {
 949                 //lyxerr << "reset lastformula to " << this << "\n";
 950                 lastformula = this;
 951                 laststr = str;
 952                 current = ibegin(par().nucleus());
 953                 ar.clear();
 954                 mathed_parse_cell(ar, str);
 955         } else {
 956                 ++current;
 957         }
 958         //lyxerr << "searching '" << str << "' in " << this << ar << endl;
 959
 960         for (MathIterator it = current; it != iend(par().nucleus()); ++it) {
 961                 if (it.cell().matchpart(ar, it.back().pos_)) {
 962                         bv->unlockInset(bv->theLockingInset());
 963                         if (!bv->lockInset(this)) {
 964                                 lyxerr << "Cannot lock inset" << endl;
 965                                 return false;
 966                         }
 967                         delete mathcursor;
 968                         mathcursor = new MathCursor(this, true);
 969                         metrics(bv);
 970                         mathcursor->setSelection(it, ar.size());
 971                         current = it;
 972                         it.jump(ar.size());
 973                         updateLocal(bv, false);
 974                         return true;
 975                 }
 976         }
 977
 978         //lyxerr << "not found!\n";
 979         lastformula = 0;
 980         return false;
 981 }
 982
 983
 984 bool InsetFormulaBase::searchBackward(BufferView * bv, string const & what,
 985                                       bool a, bool b)
 986 {
 987         lyxerr[Debug::MATHED] << "searching backward not implemented in mathed\n";
 988         return searchForward(bv, what, a, b);
 989 }
 990
 991
 992 bool InsetFormulaBase::display() const
 993 {
 994         return par()->asHullInset() && par()->asHullInset()->display();
 995 }
 996
 997
 998 string InsetFormulaBase::selectionAsString() const
 999 {
1000         return mathcursor ? mathcursor->grabSelection() : string();
1001 }
1002
1003 /////////////////////////////////////////////////////////////////////
1004
1005
1006 void mathDispatchCreation(FuncRequest const & cmd, bool display)
1007 {
1008         BufferView * bv = cmd.view();
1009         // use selection if available..
1010         //string sel;
1011         //if (action == LFUN_MATH_IMPORT_SELECTION)
1012         //      sel = "";
1013         //else
1014
1015         string sel = bv->getLyXText()->selectionAsString(bv->buffer(), false);
1016
1017         if (sel.empty()) {
1018                 InsetFormula * f = new InsetFormula(bv);
1019                 if (openNewInset(bv, f)) {
1020                         bv->theLockingInset()->
1021                                 localDispatch(FuncRequest(bv, LFUN_MATH_MUTATE, "simple"));
1022                         // don't do that also for LFUN_MATH_MODE unless you want end up with
1023                         // always changing to mathrm when opening an inlined inset
1024                         // -- I really hate "LyXfunc overloading"...
1025                         if (display)
1026                                 f->localDispatch(FuncRequest(bv, LFUN_MATH_DISPLAY));
1027                         f->localDispatch(FuncRequest(bv, LFUN_INSERT_MATH, cmd.argument));
1028                 }
1029         } else {
1030                 // create a macro if we see "\\newcommand" somewhere, and an ordinary
1031                 // formula otherwise
1032                 InsetFormulaBase * f;
1033                 if (sel.find("\\newcommand") == string::npos &&
1034                                 sel.find("\\def") == string::npos)
1035                         f = new InsetFormula(sel);
1036                 else
1037                         f = new InsetFormulaMacro(sel);
1038                 bv->getLyXText()->cutSelection(bv);
1039                 openNewInset(bv, f);
1040         }
1041         cmd.message(N_("Math editor mode"));
1042 }
1043
1044
1045 void mathDispatch(FuncRequest const & cmd)
1046 {
1047         BufferView * bv = cmd.view();
1048         if (!bv->available())
1049                 return;
1050
1051         switch (cmd.action) {
1052
1053                 case LFUN_MATH_DISPLAY:
1054                         mathDispatchCreation(cmd, true);
1055                         break;
1056
1057                 case LFUN_MATH_MODE:
1058                         mathDispatchCreation(cmd, false);
1059                         break;
1060
1061                 case LFUN_MATH_IMPORT_SELECTION:
1062                         mathDispatchCreation(cmd, false);
1063                         break;
1064
1065                 case LFUN_MATH_MACRO:
1066                         if (cmd.argument.empty())
1067                                 cmd.errorMessage(N_("Missing argument"));
1068                         else {
1069                                 string s = cmd.argument;
1070                                 string const s1 = token(s, ' ', 1);
1071                                 int const na = s1.empty() ? 0 : lyx::atoi(s1);
1072                                 openNewInset(bv, new InsetFormulaMacro(token(s, ' ', 0), na));
1073                         }
1074                         break;
1075
1076                 case LFUN_GREEK:
1077                 case LFUN_INSERT_MATH:
1078                 case LFUN_INSERT_MATRIX:
1079                 case LFUN_MATH_DELIM: {
1080                         InsetFormula * f = new InsetFormula(bv);
1081                         if (openNewInset(bv, f)) {
1082                                 bv->theLockingInset()->
1083                                         localDispatch(FuncRequest(bv, LFUN_MATH_MUTATE, "simple"));
1084                                 bv->theLockingInset()->localDispatch(cmd);
1085                         }
1086                         break;
1087                 }
1088                 default:
1089                         break;
1090         }
1091 }