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 #ifdef __GNUG__
  22 #pragma implementation
  23 #endif
  24
  25 #include "formula.h"
  26 #include "formulamacro.h"
  27 #include "lyxrc.h"
  28 #include "funcrequest.h"
  29 #include "BufferView.h"
  30 #include "lyxtext.h"
  31 #include "gettext.h"
  32 #include "LaTeXFeatures.h"
  33 #include "debug.h"
  34 #include "math_support.h"
  35 #include "math_metricsinfo.h"
  36 #include "support/lstrings.h"
  37 #include "frontends/LyXView.h"
  38 #include "frontends/font_metrics.h"
  39 #include "frontends/mouse_state.h"
  40 #include "Lsstream.h"
  41 #include "math_arrayinset.h"
  42 #include "math_charinset.h"
  43 #include "math_deliminset.h"
  44 #include "math_cursor.h"
  45 #include "math_factory.h"
  46 #include "math_fontinset.h"
  47 #include "math_hullinset.h"
  48 #include "math_iterator.h"
  49 #include "math_macrotable.h"
  50 #include "math_parser.h"
  51 #include "math_pos.h"
  52 #include "math_spaceinset.h"
  53 #include "undo_funcs.h"
  54 #include "textpainter.h"
  55 #include "frontends/Dialogs.h"
  56 #include "intl.h"
  57 #include "insets/insetcommandparams.h"
  58 #include "ref_inset.h"
  59
  60 using std::endl;
  61 using std::ostream;
  62 using std::vector;
  63 using std::abs;
  64 using std::max;
  65
  66 MathCursor * mathcursor = 0;
  67
  68
  69 namespace {
  70
  71 // local global
  72 int first_x;
  73 int first_y;
  74
  75
  76
  77 bool openNewInset(BufferView * bv, UpdatableInset * new_inset)
  78 {
  79         if (!bv->insertInset(new_inset)) {
  80                 delete new_inset;
  81                 return false;
  82         }
  83         new_inset->edit(bv, true);
  84         return true;
  85 }
  86
  87
  88 } // namespace anon
  89
  90
  91
  92 InsetFormulaBase::InsetFormulaBase()
  93         : font_(), xo_(0), yo_(0)
  94 {
  95         // This is needed as long the math parser is not re-entrant
  96         initMath();
  97         //lyxerr << "sizeof MathInset: " << sizeof(MathInset) << "\n";
  98         //lyxerr << "sizeof MathMetricsInfo: " << sizeof(MathMetricsInfo) << "\n";
  99         //lyxerr << "sizeof MathCharInset: " << sizeof(MathCharInset) << "\n";
 100         //lyxerr << "sizeof LyXFont: " << sizeof(LyXFont) << "\n";
 101 }
 102
 103
 104 // simply scrap this function if you want
 105 void InsetFormulaBase::mutateToText()
 106 {
 107 #if 0
 108         // translate to latex
 109         ostringstream os;
 110         latex(NULL, os, false, false);
 111         string str = os.str();
 112
 113         // insert this text
 114         LyXText * lt = view_->getLyXText();
 115         string::const_iterator cit = str.begin();
 116         string::const_iterator end = str.end();
 117         for (; cit != end; ++cit)
 118                 view_->owner()->getIntl()->getTransManager().TranslateAndInsert(*cit, lt);
 119
 120         // remove ourselves
 121         //view_->owner()->dispatch(LFUN_ESCAPE);
 122 #endif
 123 }
 124
 125
 126 void InsetFormulaBase::handleFont
 127         (BufferView * bv, string const & arg, string const & font)
 128 {
 129         // this whole function is a hack and won't work for incremental font
 130         // changes...
 131         bv->lockedInsetStoreUndo(Undo::EDIT);
 132         if (mathcursor->par()->name() == font) {
 133                 mathcursor->handleFont(font);
 134                 updateLocal(bv, true);
 135         } else {
 136                 bool sel = mathcursor->selection();
 137                 if (sel)
 138                         updateLocal(bv, true);
 139                 mathcursor->handleNest(createMathInset(font));
 140                 mathcursor->insert(arg);
 141                 if (!sel)
 142                         updateLocal(bv, false);
 143         }
 144 }
 145
 146
 147 // Check if uses AMS macros
 148 void InsetFormulaBase::validate(LaTeXFeatures &) const
 149 {}
 150
 151
 152 void InsetFormulaBase::metrics(BufferView * bv, LyXFont const & f) const
 153 {
 154         font_ = f;
 155         metrics(bv);
 156 }
 157
 158
 159 void InsetFormulaBase::metrics(BufferView * bv) const
 160 {
 161         if (bv)
 162                 view_ = bv->owner()->view();
 163         MathMetricsInfo mi;
 164         mi.base.style = LM_ST_TEXT;
 165         mi.base.font  = font_;
 166         mi.base.font.setColor(LColor::math);
 167         par()->metrics(mi);
 168 }
 169
 170
 171 string const InsetFormulaBase::editMessage() const
 172 {
 173         return _("Math editor mode");
 174 }
 175
 176
 177 void InsetFormulaBase::edit(BufferView * bv, int x, int y, mouse_button::state)
 178 {
 179         if (!bv->lockInset(this))
 180                 lyxerr[Debug::MATHED] << "Cannot lock inset!!!" << endl;
 181         releaseMathCursor(bv);
 182         mathcursor = new MathCursor(this, true);
 183         metrics(bv);
 184         mathcursor->setPos(x + xo_, y + yo_);
 185         // if that is removed, we won't get the magenta box when entering an
 186         // inset for the first time
 187         bv->updateInset(this, false);
 188 }
 189
 190
 191 void InsetFormulaBase::edit(BufferView * bv, bool front)
 192 {
 193         if (!bv->lockInset(this))
 194                 lyxerr << "Cannot lock math inset in edit call!\n";
 195         releaseMathCursor(bv);
 196         mathcursor = new MathCursor(this, front);
 197         metrics(bv);
 198         bv->updateInset(this, false);
 199 }
 200
 201
 202 void InsetFormulaBase::insetUnlock(BufferView * bv)
 203 {
 204         if (mathcursor) {
 205                 if (mathcursor->inMacroMode()) {
 206                         mathcursor->macroModeClose();
 207                         updateLocal(bv, true);
 208                 }
 209                 releaseMathCursor(bv);
 210         }
 211         generatePreview();
 212         bv->updateInset(this, false);
 213 }
 214
 215
 216 void InsetFormulaBase::getCursorPos(BufferView *, int & x, int & y) const
 217 {
 218         // calling metrics here destroys the cached xo,yo positions e.g. in
 219         // MathParboxinset. And it would be too expensive anyway...
 220         //metrics(bv);
 221         if (!mathcursor) {
 222                 lyxerr << "getCursorPos - should not happen";
 223                 x = y = 0;
 224                 return;
 225         }
 226         mathcursor->getPos(x, y);
 227         x = mathcursor->targetX();
 228         x -= xo_;
 229         y -= yo_;
 230         //lyxerr << "getCursorPos: " << x << ' ' << y << endl;
 231 }
 232
 233
 234 void InsetFormulaBase::toggleInsetCursor(BufferView * bv)
 235 {
 236         if (!mathcursor) {
 237                 lyxerr << "toggleInsetCursor impossible" << endl;
 238                 return;
 239         }
 240         //lyxerr << "toggleInsetCursor: " << isCursorVisible() << endl;
 241         if (isCursorVisible())
 242                 hideInsetCursor(bv);
 243         else
 244                 showInsetCursor(bv);
 245 }
 246
 247
 248 void InsetFormulaBase::showInsetCursor(BufferView * bv, bool)
 249 {
 250         if (!mathcursor) {
 251                 lyxerr << "showInsetCursor impossible" << endl;
 252                 return;
 253         }
 254         if (isCursorVisible())
 255                 return;
 256         int x, y, asc, des;
 257         mathcursor->getPos(x, y);
 258         math_font_max_dim(font_, asc, des);
 259         bv->showLockedInsetCursor(x, y - yo_, asc, des);
 260         setCursorVisible(true);
 261         //lyxerr << "showInsetCursor: " << x << ' ' << y << endl;
 262 }
 263
 264
 265 void InsetFormulaBase::hideInsetCursor(BufferView * bv)
 266 {
 267         if (!mathcursor)
 268                 return;
 269         if (!isCursorVisible())
 270                 return;
 271         bv->hideLockedInsetCursor();
 272         setCursorVisible(false);
 273         //lyxerr << "hideInsetCursor: " << endl;
 274 }
 275
 276
 277 void InsetFormulaBase::fitInsetCursor(BufferView * bv) const
 278 {
 279         if (!mathcursor)
 280                 return;
 281         int x, y, asc, des;
 282         math_font_max_dim(font_, asc, des);
 283         getCursorPos(bv, x, y);
 284         //y += yo_;
 285         //lyxerr << "fitInsetCursor: x: " << x << " y: " << y << " yo: " << yo_ << endl;
 286         bv->fitLockedInsetCursor(x, y, asc, des);
 287 }
 288
 289
 290 void InsetFormulaBase::toggleInsetSelection(BufferView * bv)
 291 {
 292         if (mathcursor)
 293                 bv->updateInset(this, false);
 294 }
 295
 296
 297 vector<string> const InsetFormulaBase::getLabelList() const
 298 {
 299   return vector<string>();
 300 }
 301
 302
 303 void InsetFormulaBase::updateLocal(BufferView * bv, bool dirty)
 304 {
 305         bv->updateInset(this, dirty);
 306 }
 307
 308
 309 Inset::RESULT InsetFormulaBase::lfunMouseRelease(FuncRequest const & cmd)
 310 {
 311         if (!mathcursor)
 312                 return UNDISPATCHED;
 313
 314         BufferView * bv = cmd.view();
 315         hideInsetCursor(bv);
 316         showInsetCursor(bv);
 317         bv->updateInset(this, false);
 318         //lyxerr << "lfunMouseRelease: buttons: " << cmd.button() << endl;
 319
 320         if (cmd.button() == mouse_button::button3) {
 321                 // try to dispatch to enclosed insets first
 322                 if (mathcursor->dispatch(cmd) == MathInset::UNDISPATCHED) {
 323                         // launch math panel for right mouse button
 324                         bv->owner()->getDialogs().showMathPanel();
 325                 }
 326                 return DISPATCHED;
 327         }
 328
 329         if (cmd.button() == mouse_button::button2) {
 330                 mathcursor->selClear();
 331                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 332                 mathcursor->insert(asArray(bv->getClipboard()));
 333                 bv->updateInset(this, true);
 334                 return DISPATCHED;
 335         }
 336
 337         if (cmd.button() == mouse_button::button1) {
 338                 // try to dispatch to enclosed insets first
 339                 mathcursor->dispatch(cmd);
 340                 cmd.view()->stuffClipboard(mathcursor->grabSelection());
 341                 // try to set the cursor
 342                 //delete mathcursor;
 343                 //mathcursor = new MathCursor(this, x == 0);
 344                 //metrics(bv);
 345                 //mathcursor->setPos(x + xo_, y + yo_);
 346                 return DISPATCHED;
 347         }
 348
 349         return UNDISPATCHED;
 350 }
 351
 352
 353 Inset::RESULT InsetFormulaBase::lfunMousePress(FuncRequest const & cmd)
 354 {
 355         BufferView * bv = cmd.view();
 356         //lyxerr << "lfunMousePress: buttons: " << cmd.button() << endl;
 357
 358         if (!mathcursor || mathcursor->formula() != this) {
 359                 lyxerr << "re-create cursor" << endl;
 360                 releaseMathCursor(bv);
 361                 mathcursor = new MathCursor(this, cmd.x == 0);
 362                 metrics(bv);
 363                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 364         }
 365
 366         if (cmd.button() == mouse_button::button3) {
 367                 mathcursor->dispatch(cmd);
 368                 return DISPATCHED;
 369         }
 370
 371         if (cmd.button() == mouse_button::button1) {
 372                 first_x = cmd.x;
 373                 first_y = cmd.y;
 374                 mathcursor->selClear();
 375                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 376                 mathcursor->dispatch(cmd);
 377                 return DISPATCHED;
 378         }
 379
 380         bv->updateInset(this, false);
 381         return DISPATCHED;
 382 }
 383
 384
 385 Inset::RESULT InsetFormulaBase::lfunMouseMotion(FuncRequest const & cmd)
 386 {
 387         if (!mathcursor)
 388                 return DISPATCHED;
 389
 390         if (mathcursor->dispatch(FuncRequest(cmd)) != MathInset::UNDISPATCHED)
 391                 return DISPATCHED;
 392
 393         // only select with button 1
 394         if (cmd.button() != mouse_button::button1)
 395                 return DISPATCHED;
 396
 397         if (abs(cmd.x - first_x) < 2 && abs(cmd.y - first_y) < 2)
 398                 return DISPATCHED;
 399
 400         first_x = cmd.x;
 401         first_y = cmd.y;
 402
 403         if (!mathcursor->selection())
 404                 mathcursor->selStart();
 405
 406         BufferView * bv = cmd.view();
 407         hideInsetCursor(bv);
 408         mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 409         showInsetCursor(bv);
 410         bv->updateInset(this, false);
 411         return DISPATCHED;
 412 }
 413
 414
 415 Inset::RESULT InsetFormulaBase::localDispatch(FuncRequest const & cmd)
 416 {
 417         //lyxerr << "InsetFormulaBase::localDispatch: act: " << cmd.action
 418         //      << " arg: '" << cmd.argument
 419         //      << " x: '" << cmd.x
 420         //      << " y: '" << cmd.y
 421         //      << "' button: " << cmd.button() << endl;
 422
 423         switch (cmd.action) {
 424                 case LFUN_MOUSE_PRESS:
 425                         return lfunMousePress(cmd);
 426                 case LFUN_MOUSE_MOTION:
 427                         return lfunMouseMotion(cmd);
 428                 case LFUN_MOUSE_RELEASE:
 429                         return lfunMouseRelease(cmd);
 430                 case LFUN_MOUSE_DOUBLE:
 431                         //lyxerr << "Mouse double\n";
 432                         return localDispatch(FuncRequest(LFUN_WORDSEL));
 433                 default:
 434                         break;
 435         }
 436
 437         if (!mathcursor)
 438                 return UNDISPATCHED;
 439
 440         BufferView * bv    = cmd.view();
 441         string argument    = cmd.argument;
 442         RESULT result      = DISPATCHED;
 443         bool sel           = false;
 444         bool was_macro     = mathcursor->inMacroMode();
 445         bool was_selection = mathcursor->selection();
 446
 447         hideInsetCursor(bv);
 448
 449         mathcursor->normalize();
 450         mathcursor->touch();
 451
 452         switch (cmd.action) {
 453
 454         case LFUN_MATH_MUTATE:
 455         case LFUN_MATH_DISPLAY:
 456         case LFUN_MATH_NUMBER:
 457         case LFUN_MATH_NONUMBER:
 458         case LFUN_TABINSERT:
 459         case LFUN_BREAKLINE:
 460         case LFUN_DELETE_LINE_FORWARD:
 461         case LFUN_INSERT_LABEL:
 462         case LFUN_MATH_EXTERN:
 463         case LFUN_TABULAR_FEATURE:
 464         case LFUN_PASTESELECTION:
 465         case LFUN_MATH_LIMITS:
 466                 bv->lockedInsetStoreUndo(Undo::EDIT);
 467                 mathcursor->dispatch(cmd);
 468                 updateLocal(bv, true);
 469                 break;
 470
 471         case LFUN_RIGHTSEL:
 472                 sel = true; // fall through...
 473         case LFUN_RIGHT:
 474                 result = mathcursor->right(sel) ? DISPATCHED : FINISHED_RIGHT;
 475                 //lyxerr << "calling scroll 20\n";
 476                 //scroll(bv, 20);
 477                 updateLocal(bv, false);
 478                 // write something to the minibuffer
 479                 //bv->owner()->message(mathcursor->info());
 480                 break;
 481
 482         case LFUN_LEFTSEL:
 483                 sel = true; // fall through
 484         case LFUN_LEFT:
 485                 result = mathcursor->left(sel) ? DISPATCHED : FINISHED;
 486                 updateLocal(bv, false);
 487                 break;
 488
 489         case LFUN_UPSEL:
 490                 sel = true; // fall through
 491         case LFUN_UP:
 492                 result = mathcursor->up(sel) ? DISPATCHED : FINISHED_UP;
 493                 updateLocal(bv, false);
 494                 break;
 495
 496         case LFUN_DOWNSEL:
 497                 sel = true; // fall through
 498         case LFUN_DOWN:
 499                 result = mathcursor->down(sel) ? DISPATCHED : FINISHED_DOWN;
 500                 updateLocal(bv, false);
 501                 break;
 502
 503         case LFUN_WORDSEL:
 504                 mathcursor->home(false);
 505                 mathcursor->end(true);
 506                 updateLocal(bv, false);
 507                 break;
 508
 509         case LFUN_HOMESEL:
 510         case LFUN_WORDLEFTSEL:
 511                 sel = true; // fall through
 512         case LFUN_HOME:
 513         case LFUN_WORDLEFT:
 514                 result = mathcursor->home(sel) ? DISPATCHED : FINISHED;
 515                 updateLocal(bv, false);
 516                 break;
 517
 518         case LFUN_ENDSEL:
 519         case LFUN_WORDRIGHTSEL:
 520                 sel = true; // fall through
 521         case LFUN_END:
 522         case LFUN_WORDRIGHT:
 523                 result = mathcursor->end(sel) ? DISPATCHED : FINISHED_RIGHT;
 524                 updateLocal(bv, false);
 525                 break;
 526
 527         case LFUN_PRIORSEL:
 528         case LFUN_PRIOR:
 529         case LFUN_BEGINNINGBUFSEL:
 530         case LFUN_BEGINNINGBUF:
 531                 result = FINISHED_UP;
 532                 updateLocal(bv, false);
 533                 break;
 534
 535         case LFUN_NEXTSEL:
 536         case LFUN_NEXT:
 537         case LFUN_ENDBUFSEL:
 538         case LFUN_ENDBUF:
 539                 result = FINISHED_DOWN;
 540                 updateLocal(bv, false);
 541                 break;
 542
 543         case LFUN_TAB:
 544                 mathcursor->idxNext();
 545                 updateLocal(bv, false);
 546                 break;
 547
 548         case LFUN_SHIFT_TAB:
 549                 mathcursor->idxPrev();
 550                 updateLocal(bv, false);
 551                 break;
 552
 553         case LFUN_DELETE_WORD_BACKWARD:
 554         case LFUN_BACKSPACE:
 555                 bv->lockedInsetStoreUndo(Undo::DELETE);
 556                 mathcursor->backspace();
 557                 updateLocal(bv, true);
 558                 break;
 559
 560         case LFUN_DELETE_WORD_FORWARD:
 561         case LFUN_DELETE:
 562                 bv->lockedInsetStoreUndo(Undo::DELETE);
 563                 mathcursor->erase();
 564                 bv->updateInset(this, true);
 565                 break;
 566
 567         //    case LFUN_GETXY:
 568         //      sprintf(dispatch_buffer, "%d %d",);
 569         //      dispatch_result = dispatch_buffer;
 570         //      break;
 571         case LFUN_SETXY: {
 572                 lyxerr << "LFUN_SETXY broken!\n";
 573                 int x = 0;
 574                 int y = 0;
 575                 istringstream is(cmd.argument.c_str());
 576                 is >> x >> y;
 577                 mathcursor->setPos(x, y);
 578                 updateLocal(bv, false);
 579                 break;
 580         }
 581
 582         case LFUN_PASTE:
 583                 if (was_macro)
 584                         mathcursor->macroModeClose();
 585                 bv->lockedInsetStoreUndo(Undo::EDIT);
 586                 mathcursor->selPaste();
 587                 updateLocal(bv, true);
 588                 break;
 589
 590         case LFUN_CUT:
 591                 bv->lockedInsetStoreUndo(Undo::DELETE);
 592                 mathcursor->selCut();
 593                 updateLocal(bv, true);
 594                 break;
 595
 596         case LFUN_COPY:
 597                 mathcursor->selCopy();
 598                 break;
 599
 600
 601         // Special casing for superscript in case of LyX handling
 602         // dead-keys:
 603         case LFUN_CIRCUMFLEX:
 604                 if (cmd.argument.empty()) {
 605                         // do superscript if LyX handles
 606                         // deadkeys
 607                         bv->lockedInsetStoreUndo(Undo::EDIT);
 608                         mathcursor->script(true);
 609                         updateLocal(bv, true);
 610                 }
 611                 break;
 612
 613         case LFUN_UMLAUT:
 614         case LFUN_ACUTE:
 615         case LFUN_GRAVE:
 616         case LFUN_BREVE:
 617         case LFUN_DOT:
 618         case LFUN_MACRON:
 619         case LFUN_CARON:
 620         case LFUN_TILDE:
 621         case LFUN_CEDILLA:
 622         case LFUN_CIRCLE:
 623         case LFUN_UNDERDOT:
 624         case LFUN_TIE:
 625         case LFUN_OGONEK:
 626         case LFUN_HUNG_UMLAUT:
 627                 break;
 628
 629         //  Math fonts
 630         case LFUN_GREEK_TOGGLE: handleFont(bv, cmd.argument, "lyxgreek"); break;
 631         case LFUN_BOLD:         handleFont(bv, cmd.argument, "mathbf"); break;
 632         case LFUN_SANS:         handleFont(bv, cmd.argument, "mathsf"); break;
 633         case LFUN_EMPH:         handleFont(bv, cmd.argument, "mathcal"); break;
 634         case LFUN_ROMAN:        handleFont(bv, cmd.argument, "mathrm"); break;
 635         case LFUN_CODE:         handleFont(bv, cmd.argument, "texttt"); break;
 636         case LFUN_FRAK:         handleFont(bv, cmd.argument, "mathfrak"); break;
 637         case LFUN_ITAL:         handleFont(bv, cmd.argument, "mathit"); break;
 638         case LFUN_NOUN:         handleFont(bv, cmd.argument, "mathbb"); break;
 639         case LFUN_FREE:         handleFont(bv, cmd.argument, "textrm"); break;
 640         case LFUN_DEFAULT:      handleFont(bv, cmd.argument, "textnormal"); break;
 641
 642         case LFUN_GREEK:
 643                 handleFont(bv, cmd.argument, "lyxgreek1");
 644                 if (cmd.argument.size())
 645                         mathcursor->insert(asArray(cmd.argument));
 646                 break;
 647
 648         case LFUN_MATH_MODE:
 649                 if (mathcursor->currentMode() == MathInset::TEXT_MODE) {
 650                         mathcursor->niceInsert(MathAtom(new MathHullInset("simple")));
 651                         updateLocal(bv, true);
 652                 } else {
 653                         handleFont(bv, cmd.argument, "textrm");
 654                 }
 655                 //bv->owner()->message(_("math text mode toggled"));
 656                 break;
 657
 658         case LFUN_MATH_SIZE:
 659 #if 0
 660                 if (!arg.empty()) {
 661                         bv->lockedInsetStoreUndo(Undo::EDIT);
 662                         mathcursor->setSize(arg);
 663                         updateLocal(bv, true);
 664                 }
 665 #endif
 666                 break;
 667
 668         case LFUN_INSERT_MATRIX: {
 669                 bv->lockedInsetStoreUndo(Undo::EDIT);
 670                 unsigned int m = 1;
 671                 unsigned int n = 1;
 672                 string v_align;
 673                 string h_align;
 674                 istringstream is(STRCONV(argument));
 675                 is >> m >> n >> v_align >> h_align;
 676                 m = max(1u, m);
 677                 n = max(1u, n);
 678                 v_align += 'c';
 679                 mathcursor->niceInsert(
 680                         MathAtom(new MathArrayInset("array", m, n, v_align[0], h_align)));
 681                         updateLocal(bv, true);
 682                 break;
 683         }
 684
 685         case LFUN_SUPERSCRIPT:
 686         case LFUN_SUBSCRIPT:
 687         {
 688                 bv->lockedInsetStoreUndo(Undo::EDIT);
 689                 mathcursor->script(cmd.action == LFUN_SUPERSCRIPT);
 690                 updateLocal(bv, true);
 691                 break;
 692         }
 693
 694         case LFUN_MATH_DELIM:
 695         {
 696                 //lyxerr << "formulabase::LFUN_MATH_DELIM, arg: '" << arg << "'\n";
 697                 string ls;
 698                 string rs = split(cmd.argument, ls, ' ');
 699                 // Reasonable default values
 700                 if (ls.empty())
 701                         ls = '(';
 702                 if (rs.empty())
 703                         rs = ')';
 704
 705                 bv->lockedInsetStoreUndo(Undo::EDIT);
 706                 mathcursor->handleNest(MathAtom(new MathDelimInset(ls, rs)));
 707                 updateLocal(bv, true);
 708                 break;
 709         }
 710
 711         case LFUN_PROTECTEDSPACE:
 712         case LFUN_MATH_SPACE:
 713                 bv->lockedInsetStoreUndo(Undo::EDIT);
 714                 mathcursor->insert(MathAtom(new MathSpaceInset(",")));
 715                 updateLocal(bv, true);
 716                 break;
 717
 718         case LFUN_UNDO:
 719                 bv->owner()->message(_("Invalid action in math mode!"));
 720                 break;
 721
 722
 723         case LFUN_EXEC_COMMAND:
 724                 result = UNDISPATCHED;
 725                 break;
 726
 727         case LFUN_INSET_ERT:
 728                 // interpret this as if a backslash was typed
 729                 bv->lockedInsetStoreUndo(Undo::EDIT);
 730                 mathcursor->interpret('\\');
 731                 updateLocal(bv, true);
 732                 break;
 733
 734         case LFUN_BREAKPARAGRAPH:
 735         case LFUN_BREAKPARAGRAPHKEEPLAYOUT:
 736         case LFUN_BREAKPARAGRAPH_SKIP:
 737                 argument = "\n";
 738                 // fall through
 739
 740 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
 741 // handling such that "self-insert" works on "arbitrary stuff" too, and
 742 // math-insert only handles special math things like "matrix".
 743         case LFUN_INSERT_MATH:
 744                 bv->lockedInsetStoreUndo(Undo::EDIT);
 745                 mathcursor->niceInsert(argument);
 746                 updateLocal(bv, true);
 747                 break;
 748
 749         case -1:
 750         case LFUN_SELFINSERT:
 751                 if (!argument.empty()) {
 752                         bv->lockedInsetStoreUndo(Undo::EDIT);
 753                         if (argument.size() == 1)
 754                                 result = mathcursor->interpret(argument[0]) ? DISPATCHED : FINISHED_RIGHT;
 755                         else
 756                                 mathcursor->insert(asArray(argument));
 757                         updateLocal(bv, true);
 758                 }
 759                 break;
 760
 761         case LFUN_MATH_PANEL:
 762                 result = UNDISPATCHED;
 763                 break;
 764
 765         case LFUN_ESCAPE:
 766                 if (mathcursor->selection())
 767                         mathcursor->selClear();
 768                 else
 769                         result = UNDISPATCHED;
 770                 break;
 771
 772         case LFUN_INSET_TOGGLE:
 773                 mathcursor->insetToggle();
 774                 updateLocal(bv, true);
 775                 break;
 776
 777         case LFUN_REF_INSERT:
 778                 //if (argument.empty()) {
 779                 //      InsetCommandParams p("ref");
 780                 //      owner_->getDialogs().createRef(p.getAsString());
 781                 //} else {
 782                 //      InsetCommandParams p;
 783                 //      p.setFromString(argument);
 784
 785                 //      InsetRef * inset = new InsetRef(p, *buffer_);
 786                 //      if (!insertInset(inset))
 787                 //              delete inset;
 788                 //      else
 789                 //              updateInset(inset, true);
 790                 //}
 791                 //
 792                 if (cmd.argument.empty()) {
 793                         InsetCommandParams p("ref");
 794                         bv->owner()->getDialogs().createRef(p.getAsString());
 795                 } else {
 796                         //mathcursor->handleNest(new InsetRef2);
 797                         //mathcursor->insert(arg);
 798                         mathcursor->insert(MathAtom(new RefInset(cmd.argument)));
 799                 }
 800                 updateLocal(bv, true);
 801                 break;
 802
 803         default:
 804                 result = UNDISPATCHED;
 805         }
 806
 807         mathcursor->normalize();
 808         mathcursor->touch();
 809
 810         lyx::Assert(mathcursor);
 811
 812         if (mathcursor->selection() || was_selection)
 813                 toggleInsetSelection(bv);
 814
 815         if (result == DISPATCHED || result == DISPATCHED_NOUPDATE ||
 816             result == UNDISPATCHED) {
 817                 fitInsetCursor(bv);
 818                 showInsetCursor(bv);
 819                 revealCodes(bv);
 820                 cmd.view()->stuffClipboard(mathcursor->grabSelection());
 821         } else {
 822                 releaseMathCursor(bv);
 823                 bv->unlockInset(this);
 824         }
 825
 826         return result;  // original version
 827 }
 828
 829
 830 void InsetFormulaBase::revealCodes(BufferView * bv) const
 831 {
 832         if (!mathcursor)
 833                 return;
 834         bv->owner()->message(mathcursor->info());
 835
 836 #if 0
 837         // write something to the minibuffer
 838         // translate to latex
 839         mathcursor->markInsert();
 840         ostringstream os;
 841         write(NULL, os);
 842         string str = os.str();
 843         mathcursor->markErase();
 844         string::size_type pos = 0;
 845         string res;
 846         for (string::iterator it = str.begin(); it != str.end(); ++it) {
 847                 if (*it == '\n')
 848                         res += ' ';
 849                 else if (*it == '\0') {
 850                         res += "  -X-  ";
 851                         pos = it - str.begin();
 852                 }
 853                 else
 854                         res += *it;
 855         }
 856         if (pos > 30)
 857                 res = res.substr(pos - 30);
 858         if (res.size() > 60)
 859                 res = res.substr(0, 60);
 860         bv->owner()->message(res);
 861 #endif
 862 }
 863
 864
 865 Inset::Code InsetFormulaBase::lyxCode() const
 866 {
 867         return Inset::MATH_CODE;
 868 }
 869
 870
 871 int InsetFormulaBase::ylow() const
 872 {
 873         return yo_ - ascent(view(), font_);
 874 }
 875
 876
 877 int InsetFormulaBase::yhigh() const
 878 {
 879         return yo_ + descent(view(), font_);
 880 }
 881
 882
 883 int InsetFormulaBase::xlow() const
 884 {
 885         return xo_;
 886 }
 887
 888
 889 int InsetFormulaBase::xhigh() const
 890 {
 891         return xo_ + width(view(), font_);
 892 }
 893
 894
 895 /////////////////////////////////////////////////////////////////////
 896
 897
 898 bool InsetFormulaBase::searchForward(BufferView * bv, string const & str,
 899                                      bool, bool)
 900 {
 901 #ifdef WITH_WARNINGS
 902 #warning pretty ugly
 903 #endif
 904         static InsetFormulaBase * lastformula = 0;
 905         static MathIterator current = MathIterator(ibegin(par().nucleus()));
 906         static MathArray ar;
 907         static string laststr;
 908
 909         if (lastformula != this || laststr != str) {
 910                 //lyxerr << "reset lastformula to " << this << "\n";
 911                 lastformula = this;
 912                 laststr = str;
 913                 current = ibegin(par().nucleus());
 914                 ar.clear();
 915                 mathed_parse_cell(ar, str);
 916         } else {
 917                 ++current;
 918         }
 919         //lyxerr << "searching '" << str << "' in " << this << ar << endl;
 920
 921         for (MathIterator it = current; it != iend(par().nucleus()); ++it) {
 922                 if (it.cell().matchpart(ar, it.back().pos_)) {
 923                         bv->unlockInset(bv->theLockingInset());
 924                         if (!bv->lockInset(this)) {
 925                                 lyxerr << "Cannot lock inset" << endl;
 926                                 return false;
 927                         }
 928                         delete mathcursor;
 929                         mathcursor = new MathCursor(this, true);
 930                         metrics(bv);
 931                         mathcursor->setSelection(it, ar.size());
 932                         current = it;
 933                         it.jump(ar.size());
 934                         updateLocal(bv, false);
 935                         return true;
 936                 }
 937         }
 938
 939         //lyxerr << "not found!\n";
 940         lastformula = 0;
 941         return false;
 942 }
 943
 944
 945 bool InsetFormulaBase::searchBackward(BufferView * bv, string const & what,
 946                                       bool a, bool b)
 947 {
 948         lyxerr[Debug::MATHED] << "searching backward not implemented in mathed\n";
 949         return searchForward(bv, what, a, b);
 950 }
 951
 952
 953 bool InsetFormulaBase::display() const
 954 {
 955         return par()->asHullInset() && par()->asHullInset()->display();
 956 }
 957
 958
 959 string InsetFormulaBase::selectionAsString() const
 960 {
 961         return mathcursor ? mathcursor->grabSelection() : string();
 962 }
 963
 964 /////////////////////////////////////////////////////////////////////
 965
 966
 967 void mathDispatchCreation(FuncRequest const & cmd, bool display)
 968 {
 969         BufferView * bv = cmd.view();
 970         // use selection if available..
 971         //string sel;
 972         //if (action == LFUN_MATH_IMPORT_SELECTION)
 973         //      sel = "";
 974         //else
 975
 976         string sel = bv->getLyXText()->selectionAsString(bv->buffer(), false);
 977
 978         if (sel.empty()) {
 979                 InsetFormula * f = new InsetFormula(bv);
 980                 if (openNewInset(bv, f)) {
 981                         bv->theLockingInset()->
 982                                 localDispatch(FuncRequest(bv, LFUN_MATH_MUTATE, "simple"));
 983                         // don't do that also for LFUN_MATH_MODE unless you want end up with
 984                         // always changing to mathrm when opening an inlined inset
 985                         // -- I really hate "LyXfunc overloading"...
 986                         if (display)
 987                                 f->localDispatch(FuncRequest(bv, LFUN_MATH_DISPLAY));
 988                         f->localDispatch(FuncRequest(bv, LFUN_INSERT_MATH, cmd.argument));
 989                 }
 990         } else {
 991                 // create a macro if we see "\\newcommand" somewhere, and an ordinary
 992                 // formula otherwise
 993                 InsetFormulaBase * f;
 994                 if (sel.find("\\newcommand") == string::npos &&
 995                                 sel.find("\\def") == string::npos)
 996                         f = new InsetFormula(sel);
 997                 else
 998                         f = new InsetFormulaMacro(sel);
 999                 bv->getLyXText()->cutSelection(bv);
1000                 openNewInset(bv, f);
1001         }
1002         cmd.message(N_("Math editor mode"));
1003 }
1004
1005
1006 void mathDispatch(FuncRequest const & cmd)
1007 {
1008         BufferView * bv = cmd.view();
1009         if (!bv->available())
1010                 return;
1011
1012         switch (cmd.action) {
1013
1014                 case LFUN_MATH_DISPLAY:
1015                         mathDispatchCreation(cmd, true);
1016                         break;
1017
1018                 case LFUN_MATH_MODE:
1019                         mathDispatchCreation(cmd, false);
1020                         break;
1021
1022                 case LFUN_MATH_IMPORT_SELECTION:
1023                         mathDispatchCreation(cmd, false);
1024                         break;
1025
1026                 case LFUN_MATH_MACRO:
1027                         if (cmd.argument.empty())
1028                                 cmd.errorMessage(N_("Missing argument"));
1029                         else {
1030                                 string s = cmd.argument;
1031                                 string const s1 = token(s, ' ', 1);
1032                                 int const na = s1.empty() ? 0 : lyx::atoi(s1);
1033                                 openNewInset(bv, new InsetFormulaMacro(token(s, ' ', 0), na));
1034                         }
1035                         break;
1036
1037                 case LFUN_GREEK:
1038                 case LFUN_INSERT_MATH:
1039                 case LFUN_INSERT_MATRIX:
1040                 case LFUN_MATH_DELIM: {
1041                         InsetFormula * f = new InsetFormula(bv);
1042                         if (openNewInset(bv, f)) {
1043                                 bv->theLockingInset()->
1044                                         localDispatch(FuncRequest(bv, LFUN_MATH_MUTATE, "simple"));
1045                                 bv->theLockingInset()->localDispatch(cmd);
1046                         }
1047                         break;
1048                 }
1049                 default:
1050                         break;
1051         }
1052 }