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