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