src/mathed/InsetMathNest.cpp

   1 /**
   2  * \file InsetMathNest.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "InsetMathNest.h"
  14
  15 #include "InsetMathArray.h"
  16 #include "InsetMathBig.h"
  17 #include "InsetMathBox.h"
  18 #include "InsetMathBrace.h"
  19 #include "InsetMathColor.h"
  20 #include "InsetMathComment.h"
  21 #include "InsetMathDelim.h"
  22 #include "InsetMathHull.h"
  23 #include "InsetMathRef.h"
  24 #include "InsetMathScript.h"
  25 #include "InsetMathSpace.h"
  26 #include "InsetMathSymbol.h"
  27 #include "InsetMathUnknown.h"
  28 #include "MathData.h"
  29 #include "MathFactory.h"
  30 #include "MathMacro.h"
  31 #include "MathMacroArgument.h"
  32 #include "MathParser.h"
  33 #include "MathStream.h"
  34 #include "MathSupport.h"
  35
  36 #include "Bidi.h"
  37 #include "Buffer.h"
  38 #include "BufferView.h"
  39 #include "CoordCache.h"
  40 #include "Cursor.h"
  41 #include "CutAndPaste.h"
  42 #include "DispatchResult.h"
  43 #include "FuncRequest.h"
  44 #include "FuncStatus.h"
  45 #include "LyXFunc.h"
  46 #include "LyXRC.h"
  47 #include "OutputParams.h"
  48 #include "Text.h"
  49
  50 #include "frontends/Clipboard.h"
  51 #include "frontends/Painter.h"
  52 #include "frontends/Selection.h"
  53
  54 #include "support/debug.h"
  55 #include "support/gettext.h"
  56 #include "support/lstrings.h"
  57 #include "support/textutils.h"
  58 #include "support/docstream.h"
  59
  60 #include <algorithm>
  61 #include <sstream>
  62
  63 using namespace std;
  64 using namespace lyx::support;
  65
  66 namespace lyx {
  67
  68 using cap::copySelection;
  69 using cap::grabAndEraseSelection;
  70 using cap::cutSelection;
  71 using cap::replaceSelection;
  72 using cap::selClearOrDel;
  73
  74
  75 InsetMathNest::InsetMathNest(idx_type nargs)
  76         : cells_(nargs), lock_(false), mouse_hover_(false)
  77 {}
  78
  79
  80 InsetMathNest::InsetMathNest(InsetMathNest const & inset)
  81         : InsetMath(inset), cells_(inset.cells_), lock_(inset.lock_),
  82           mouse_hover_(false)
  83 {}
  84
  85
  86 InsetMathNest & InsetMathNest::operator=(InsetMathNest const & inset)
  87 {
  88         cells_ = inset.cells_;
  89         lock_ = inset.lock_;
  90         mouse_hover_ = false;
  91         InsetMath::operator=(inset);
  92         return *this;
  93 }
  94
  95
  96 InsetMath::idx_type InsetMathNest::nargs() const
  97 {
  98         return cells_.size();
  99 }
 100
 101
 102 void InsetMathNest::cursorPos(BufferView const & bv,
 103                 CursorSlice const & sl, bool /*boundary*/,
 104                 int & x, int & y) const
 105 {
 106 // FIXME: This is a hack. Ideally, the coord cache should not store
 107 // absolute positions, but relative ones. This would mean to call
 108 // setXY() not in MathData::draw(), but in the parent insets' draw()
 109 // with the correctly adjusted x,y values. But this means that we'd have
 110 // to touch all (math)inset's draw() methods. Right now, we'll store
 111 // absolute value, and make them here relative, only to make them
 112 // absolute again when actually drawing the cursor. What a mess.
 113         BOOST_ASSERT(&sl.inset() == this);
 114         MathData const & ar = sl.cell();
 115         CoordCache const & coord_cache = bv.coordCache();
 116         if (!coord_cache.getArrays().has(&ar)) {
 117                 // this can (semi-)legally happen if we just created this cell
 118                 // and it never has been drawn before. So don't ASSERT.
 119                 //lyxerr << "no cached data for array " << &ar << endl;
 120                 x = 0;
 121                 y = 0;
 122                 return;
 123         }
 124         Point const pt = coord_cache.getArrays().xy(&ar);
 125         if (!coord_cache.getInsets().has(this)) {
 126                 // same as above
 127                 //lyxerr << "no cached data for inset " << this << endl;
 128                 x = 0;
 129                 y = 0;
 130                 return;
 131         }
 132         Point const pt2 = coord_cache.getInsets().xy(this);
 133         //lyxerr << "retrieving position cache for MathData "
 134         //      << pt.x_ << ' ' << pt.y_ << endl;
 135         x = pt.x_ - pt2.x_ + ar.pos2x(&bv, sl.pos());
 136         y = pt.y_ - pt2.y_;
 137 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 138 //              << " asc: " << ascent() << "  des: " << descent()
 139 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 140         // move cursor visually into empty cells ("blue rectangles");
 141         if (ar.empty())
 142                 x += 2;
 143 }
 144
 145
 146 void InsetMathNest::metrics(MetricsInfo const & mi) const
 147 {
 148         MetricsInfo m = mi;
 149         for (idx_type i = 0, n = nargs(); i != n; ++i) {
 150                 Dimension dim;
 151                 cell(i).metrics(m, dim);
 152         }
 153 }
 154
 155
 156 bool InsetMathNest::idxNext(Cursor & cur) const
 157 {
 158         BOOST_ASSERT(&cur.inset() == this);
 159         if (cur.idx() == cur.lastidx())
 160                 return false;
 161         ++cur.idx();
 162         cur.pos() = 0;
 163         return true;
 164 }
 165
 166
 167 bool InsetMathNest::idxForward(Cursor & cur) const
 168 {
 169         return idxNext(cur);
 170 }
 171
 172
 173 bool InsetMathNest::idxPrev(Cursor & cur) const
 174 {
 175         BOOST_ASSERT(&cur.inset() == this);
 176         if (cur.idx() == 0)
 177                 return false;
 178         --cur.idx();
 179         cur.pos() = cur.lastpos();
 180         return true;
 181 }
 182
 183
 184 bool InsetMathNest::idxBackward(Cursor & cur) const
 185 {
 186         return idxPrev(cur);
 187 }
 188
 189
 190 bool InsetMathNest::idxFirst(Cursor & cur) const
 191 {
 192         BOOST_ASSERT(&cur.inset() == this);
 193         if (nargs() == 0)
 194                 return false;
 195         cur.idx() = 0;
 196         cur.pos() = 0;
 197         return true;
 198 }
 199
 200
 201 bool InsetMathNest::idxLast(Cursor & cur) const
 202 {
 203         BOOST_ASSERT(&cur.inset() == this);
 204         if (nargs() == 0)
 205                 return false;
 206         cur.idx() = cur.lastidx();
 207         cur.pos() = cur.lastpos();
 208         return true;
 209 }
 210
 211
 212 void InsetMathNest::dump() const
 213 {
 214         odocstringstream oss;
 215         WriteStream os(oss);
 216         os << "---------------------------------------------\n";
 217         write(os);
 218         os << "\n";
 219         for (idx_type i = 0, n = nargs(); i != n; ++i)
 220                 os << cell(i) << "\n";
 221         os << "---------------------------------------------\n";
 222         lyxerr << to_utf8(oss.str());
 223 }
 224
 225
 226 void InsetMathNest::draw(PainterInfo & pi, int x, int y) const
 227 {
 228 #if 0
 229         if (lock_)
 230                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 231                                         Color_mathlockbg);
 232 #endif
 233         setPosCache(pi, x, y);
 234 }
 235
 236
 237 void InsetMathNest::drawSelection(PainterInfo & pi, int x, int y) const
 238 {
 239         BufferView & bv = *pi.base.bv;
 240         // this should use the x/y values given, not the cached values
 241         Cursor & cur = bv.cursor();
 242         if (!cur.selection())
 243                 return;
 244         if (&cur.inset() != this)
 245                 return;
 246
 247         // FIXME: hack to get position cache warm
 248         bool const original_drawing_state = pi.pain.isDrawingEnabled();
 249         pi.pain.setDrawingEnabled(false);
 250         draw(pi, x, y);
 251         pi.pain.setDrawingEnabled(original_drawing_state);
 252
 253         CursorSlice s1 = cur.selBegin();
 254         CursorSlice s2 = cur.selEnd();
 255
 256         //lyxerr << "InsetMathNest::drawing selection: "
 257         //      << " s1: " << s1 << " s2: " << s2 << endl;
 258         if (s1.idx() == s2.idx()) {
 259                 MathData const & c = cell(s1.idx());
 260                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 261                 int x1 = g.pos.x_ + c.pos2x(pi.base.bv, s1.pos());
 262                 int y1 = g.pos.y_ - g.dim.ascent();
 263                 int x2 = g.pos.x_ + c.pos2x(pi.base.bv, s2.pos());
 264                 int y2 = g.pos.y_ + g.dim.descent();
 265                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color_selection);
 266         //lyxerr << "InsetMathNest::drawing selection 3: "
 267         //      << " x1: " << x1 << " x2: " << x2
 268         //      << " y1: " << y1 << " y2: " << y2 << endl;
 269         } else {
 270                 for (idx_type i = 0; i < nargs(); ++i) {
 271                         if (idxBetween(i, s1.idx(), s2.idx())) {
 272                                 MathData const & c = cell(i);
 273                                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 274                                 int x1 = g.pos.x_;
 275                                 int y1 = g.pos.y_ - g.dim.ascent();
 276                                 int x2 = g.pos.x_ + g.dim.width();
 277                                 int y2 = g.pos.y_ + g.dim.descent();
 278                                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color_selection);
 279                         }
 280                 }
 281         }
 282 }
 283
 284
 285 void InsetMathNest::validate(LaTeXFeatures & features) const
 286 {
 287         for (idx_type i = 0; i < nargs(); ++i)
 288                 cell(i).validate(features);
 289 }
 290
 291
 292 void InsetMathNest::replace(ReplaceData & rep)
 293 {
 294         for (idx_type i = 0; i < nargs(); ++i)
 295                 cell(i).replace(rep);
 296 }
 297
 298
 299 bool InsetMathNest::contains(MathData const & ar) const
 300 {
 301         for (idx_type i = 0; i < nargs(); ++i)
 302                 if (cell(i).contains(ar))
 303                         return true;
 304         return false;
 305 }
 306
 307
 308 bool InsetMathNest::lock() const
 309 {
 310         return lock_;
 311 }
 312
 313
 314 void InsetMathNest::lock(bool l)
 315 {
 316         lock_ = l;
 317 }
 318
 319
 320 bool InsetMathNest::isActive() const
 321 {
 322         return nargs() > 0;
 323 }
 324
 325
 326 MathData InsetMathNest::glue() const
 327 {
 328         MathData ar;
 329         for (size_t i = 0; i < nargs(); ++i)
 330                 ar.append(cell(i));
 331         return ar;
 332 }
 333
 334
 335 void InsetMathNest::write(WriteStream & os) const
 336 {
 337         os << '\\' << name().c_str();
 338         for (size_t i = 0; i < nargs(); ++i)
 339                 os << '{' << cell(i) << '}';
 340         if (nargs() == 0)
 341                 os.pendingSpace(true);
 342         if (lock_ && !os.latex()) {
 343                 os << "\\lyxlock";
 344                 os.pendingSpace(true);
 345         }
 346 }
 347
 348
 349 void InsetMathNest::normalize(NormalStream & os) const
 350 {
 351         os << '[' << name().c_str();
 352         for (size_t i = 0; i < nargs(); ++i)
 353                 os << ' ' << cell(i);
 354         os << ']';
 355 }
 356
 357
 358 int InsetMathNest::latex(Buffer const &, odocstream & os,
 359                         OutputParams const & runparams) const
 360 {
 361         WriteStream wi(os, runparams.moving_arg, true);
 362         write(wi);
 363         return wi.line();
 364 }
 365
 366
 367 bool InsetMathNest::setMouseHover(bool mouse_hover)
 368 {
 369         mouse_hover_ = mouse_hover;
 370         return true;
 371 }
 372
 373
 374 bool InsetMathNest::notifyCursorLeaves(Cursor & /*cur*/)
 375 {
 376         // FIXME: look here
 377 #if 0
 378         MathData & ar = cur.cell();
 379         // remove base-only "scripts"
 380         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 381                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 382                 if (p && p->nargs() == 1) {
 383                         MathData ar = p->nuc();
 384                         erase(i);
 385                         insert(i, ar);
 386                         cur.adjust(i, ar.size() - 1);
 387                 }
 388         }
 389
 390         // glue adjacent font insets of the same kind
 391         for (pos_type i = 0; i + 1 < size(); ++i) {
 392                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 393                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 394                 if (p && q && p->name() == q->name()) {
 395                         p->cell(0).append(q->cell(0));
 396                         erase(i + 1);
 397                         cur.adjust(i, -1);
 398                 }
 399         }
 400 #endif
 401         return false;
 402 }
 403
 404
 405 void InsetMathNest::handleFont
 406         (Cursor & cur, docstring const & arg, char const * const font)
 407 {
 408         handleFont(cur, arg, from_ascii(font));
 409 }
 410
 411
 412 void InsetMathNest::handleFont
 413         (Cursor & cur, docstring const & arg, docstring const & font)
 414 {
 415         // this whole function is a hack and won't work for incremental font
 416         // changes...
 417
 418         if (cur.inset().asInsetMath()->name() == font) {
 419                 cur.recordUndoInset();
 420                 cur.handleFont(to_utf8(font));
 421         } else {
 422                 cur.recordUndo();
 423                 cur.handleNest(createInsetMath(font));
 424                 cur.insert(arg);
 425         }
 426 }
 427
 428
 429 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 430 {
 431         cur.recordUndo();
 432         Font font;
 433         bool b;
 434         font.fromString(to_utf8(arg), b);
 435         if (font.fontInfo().color() != Color_inherit) {
 436                 MathAtom at = MathAtom(new InsetMathColor(true, font.fontInfo().color()));
 437                 cur.handleNest(at, 0);
 438         }
 439 }
 440
 441
 442 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 443 {
 444         //lyxerr << "InsetMathNest: request: " << cmd << endl;
 445         //CursorSlice sl = cur.current();
 446
 447         switch (cmd.action) {
 448
 449         case LFUN_PASTE: {
 450                 cur.recordUndo();
 451                 cur.message(_("Paste"));
 452                 replaceSelection(cur);
 453                 docstring topaste;
 454                 if (cmd.argument().empty() && !theClipboard().isInternal())
 455                         topaste = theClipboard().getAsText();
 456                 else {
 457                         size_t n = 0;
 458                         idocstringstream is(cmd.argument());
 459                         is >> n;
 460                         topaste = cap::getSelection(cur.buffer(), n);
 461                 }
 462                 cur.niceInsert(topaste);
 463                 cur.clearSelection(); // bug 393
 464                 cur.finishUndo();
 465                 break;
 466         }
 467
 468         case LFUN_CUT:
 469                 cur.recordUndo();
 470                 cutSelection(cur, true, true);
 471                 cur.message(_("Cut"));
 472                 // Prevent stale position >= size crash
 473                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 474                 cur.normalize();
 475                 break;
 476
 477         case LFUN_COPY:
 478                 copySelection(cur);
 479                 cur.message(_("Copy"));
 480                 break;
 481
 482         case LFUN_MOUSE_PRESS:
 483                 lfunMousePress(cur, cmd);
 484                 break;
 485
 486         case LFUN_MOUSE_MOTION:
 487                 lfunMouseMotion(cur, cmd);
 488                 break;
 489
 490         case LFUN_MOUSE_RELEASE:
 491                 lfunMouseRelease(cur, cmd);
 492                 break;
 493
 494         case LFUN_FINISHED_LEFT: // in math, left is backwards
 495         case LFUN_FINISHED_BACKWARD:
 496                 cur.bv().cursor() = cur;
 497                 break;
 498
 499         case LFUN_FINISHED_RIGHT: // in math, right is forward
 500         case LFUN_FINISHED_FORWARD:
 501                 ++cur.pos();
 502                 cur.bv().cursor() = cur;
 503                 break;
 504
 505         case LFUN_CHAR_RIGHT:
 506         case LFUN_CHAR_LEFT:
 507         case LFUN_CHAR_BACKWARD:
 508         case LFUN_CHAR_FORWARD:
 509                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 510         case LFUN_CHAR_RIGHT_SELECT:
 511         case LFUN_CHAR_LEFT_SELECT:
 512         case LFUN_CHAR_BACKWARD_SELECT:
 513         case LFUN_CHAR_FORWARD_SELECT: {
 514                 // are we in a selection?
 515                 bool select = (cmd.action == LFUN_CHAR_RIGHT_SELECT
 516                                            || cmd.action == LFUN_CHAR_LEFT_SELECT
 517                                            || cmd.action == LFUN_CHAR_BACKWARD_SELECT
 518                                            || cmd.action == LFUN_CHAR_FORWARD_SELECT);
 519                 // are we moving forward or backwards?
 520                 // If the command was RIGHT or LEFT, then whether we're moving forward
 521                 // or backwards depends on the cursor movement mode (logical or visual):
 522                 //  * in visual mode, since math is always LTR, right -> forward,
 523                 //    left -> backwards
 524                 //  * in logical mode, the mapping is determined by the
 525                 //    reverseDirectionNeeded() function
 526
 527                 bool forward;
 528                 kb_action finish_lfun;
 529
 530                 if (cmd.action == LFUN_CHAR_FORWARD
 531                                 || cmd.action == LFUN_CHAR_FORWARD_SELECT) {
 532                         forward = true;
 533                         finish_lfun = LFUN_FINISHED_FORWARD;
 534                 }
 535                 else if (cmd.action == LFUN_CHAR_BACKWARD
 536                                 || cmd.action == LFUN_CHAR_BACKWARD_SELECT) {
 537                         forward = false;
 538                         finish_lfun = LFUN_FINISHED_BACKWARD;
 539                 }
 540                 else {
 541                         bool right = (cmd.action == LFUN_CHAR_RIGHT_SELECT
 542                                                   || cmd.action == LFUN_CHAR_RIGHT);
 543                         if (lyxrc.visual_cursor || !reverseDirectionNeeded(cur))
 544                                 forward = right;
 545                         else
 546                                 forward = !right;
 547
 548                         if (right)
 549                                 finish_lfun = LFUN_FINISHED_RIGHT;
 550                         else
 551                                 finish_lfun = LFUN_FINISHED_LEFT;
 552                 }
 553                 // Now that we know exactly what we want to do, let's do it!
 554                 cur.selHandle(select);
 555                 cur.autocorrect() = false;
 556                 cur.clearTargetX();
 557                 cur.macroModeClose();
 558                 // try moving forward or backwards as necessary...
 559                 if (!(forward ? cursorMathForward(cur) : cursorMathBackward(cur))) {
 560                         // ... and if movement failed, then finish forward or backwards
 561                         // as necessary
 562                         cmd = FuncRequest(finish_lfun);
 563                         cur.undispatched();
 564                 }
 565                 break;
 566         }
 567
 568         case LFUN_DOWN:
 569         case LFUN_UP:
 570                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 571         case LFUN_DOWN_SELECT:
 572         case LFUN_UP_SELECT: {
 573                 // close active macro
 574                 if (cur.inMacroMode()) {
 575                         cur.macroModeClose();
 576                         break;
 577                 }
 578
 579                 // stop/start the selection
 580                 bool select = cmd.action == LFUN_DOWN_SELECT ||
 581                         cmd.action == LFUN_UP_SELECT;
 582                 cur.selHandle(select);
 583
 584                 // go up/down
 585                 bool up = cmd.action == LFUN_UP || cmd.action == LFUN_UP_SELECT;
 586                 bool successful = cur.upDownInMath(up);
 587                 if (successful) {
 588                         // notify left insets and give them chance to set update flags
 589                         lyx::notifyCursorLeaves(cur.beforeDispatchCursor(), cur);
 590                         cur.fixIfBroken();
 591                         break;
 592                 }
 593
 594                 if (cur.fixIfBroken())
 595                         // FIXME: Something bad happened. We pass the corrected Cursor
 596                         // instead of letting things go worse.
 597                         break;
 598
 599                 // We did not manage to move the cursor.
 600                 cur.undispatched();
 601                 break;
 602         }
 603
 604         case LFUN_MOUSE_DOUBLE:
 605         case LFUN_MOUSE_TRIPLE:
 606         case LFUN_WORD_SELECT:
 607                 cur.pos() = 0;
 608                 cur.idx() = 0;
 609                 cur.resetAnchor();
 610                 cur.selection() = true;
 611                 cur.pos() = cur.lastpos();
 612                 cur.idx() = cur.lastidx();
 613                 break;
 614
 615         case LFUN_PARAGRAPH_UP:
 616         case LFUN_PARAGRAPH_DOWN:
 617                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 618         case LFUN_PARAGRAPH_UP_SELECT:
 619         case LFUN_PARAGRAPH_DOWN_SELECT:
 620                 break;
 621
 622         case LFUN_LINE_BEGIN:
 623         case LFUN_WORD_BACKWARD:
 624         case LFUN_WORD_LEFT:
 625                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 626         case LFUN_LINE_BEGIN_SELECT:
 627         case LFUN_WORD_BACKWARD_SELECT:
 628         case LFUN_WORD_LEFT_SELECT:
 629                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 630                                 cmd.action == LFUN_WORD_LEFT_SELECT ||
 631                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 632                 cur.macroModeClose();
 633                 if (cur.pos() != 0) {
 634                         cur.pos() = 0;
 635                 } else if (cur.col() != 0) {
 636                         cur.idx() -= cur.col();
 637                         cur.pos() = 0;
 638                 } else if (cur.idx() != 0) {
 639                         cur.idx() = 0;
 640                         cur.pos() = 0;
 641                 } else {
 642                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 643                         cur.undispatched();
 644                 }
 645                 break;
 646
 647         case LFUN_WORD_FORWARD:
 648         case LFUN_WORD_RIGHT:
 649         case LFUN_LINE_END:
 650                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 651         case LFUN_WORD_FORWARD_SELECT:
 652         case LFUN_WORD_RIGHT_SELECT:
 653         case LFUN_LINE_END_SELECT:
 654                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 655                                 cmd.action == LFUN_WORD_RIGHT_SELECT ||
 656                                 cmd.action == LFUN_LINE_END_SELECT);
 657                 cur.macroModeClose();
 658                 cur.clearTargetX();
 659                 if (cur.pos() != cur.lastpos()) {
 660                         cur.pos() = cur.lastpos();
 661                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 662                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 663                         cur.pos() = cur.lastpos();
 664                 } else if (cur.idx() != cur.lastidx()) {
 665                         cur.idx() = cur.lastidx();
 666                         cur.pos() = cur.lastpos();
 667                 } else {
 668                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 669                         cur.undispatched();
 670                 }
 671                 break;
 672
 673         case LFUN_SCREEN_UP_SELECT:
 674                 cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 675                 cur.undispatched();
 676                 break;
 677
 678         case LFUN_SCREEN_DOWN_SELECT:
 679                 cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 680                 cur.undispatched();
 681                 break;
 682
 683         case LFUN_CELL_FORWARD:
 684                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 685                 cur.inset().idxNext(cur);
 686                 break;
 687
 688         case LFUN_CELL_BACKWARD:
 689                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 690                 cur.inset().idxPrev(cur);
 691                 break;
 692
 693         case LFUN_WORD_DELETE_BACKWARD:
 694         case LFUN_CHAR_DELETE_BACKWARD:
 695                 if (cur.pos() == 0)
 696                         // May affect external cell:
 697                         cur.recordUndoInset();
 698                 else
 699                         cur.recordUndo();
 700                 // if the inset can not be removed from within, delete it
 701                 if (!cur.backspace()) {
 702                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 703                         cur.innerText()->dispatch(cur, cmd);
 704                 }
 705                 break;
 706
 707         case LFUN_WORD_DELETE_FORWARD:
 708         case LFUN_CHAR_DELETE_FORWARD:
 709                 if (cur.pos() == cur.lastpos())
 710                         // May affect external cell:
 711                         cur.recordUndoInset();
 712                 else
 713                         cur.recordUndo();
 714                 // if the inset can not be removed from within, delete it
 715                 if (!cur.erase()) {
 716                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 717                         cur.innerText()->dispatch(cur, cmd);
 718                 }
 719                 break;
 720
 721         case LFUN_ESCAPE:
 722                 if (cur.selection())
 723                         cur.clearSelection();
 724                 else  {
 725                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 726                         cur.undispatched();
 727                 }
 728                 break;
 729
 730         // 'Locks' the math inset. A 'locked' math inset behaves as a unit
 731         // that is traversed by a single <CursorLeft>/<CursorRight>.
 732         case LFUN_INSET_TOGGLE:
 733                 cur.recordUndo();
 734                 lock(!lock());
 735                 cur.popForward();
 736                 break;
 737
 738         case LFUN_SELF_INSERT:
 739                 if (cmd.argument().size() != 1) {
 740                         cur.recordUndo();
 741                         docstring const arg = cmd.argument();
 742                         if (!interpretString(cur, arg))
 743                                 cur.insert(arg);
 744                         break;
 745                 }
 746                 // Don't record undo steps if we are in macro mode and
 747                 // cmd.argument is the next character of the macro name.
 748                 // Otherwise we'll get an invalid cursor if we undo after
 749                 // the macro was finished and the macro is a known command,
 750                 // e.g. sqrt. Cursor::macroModeClose replaces in this case
 751                 // the InsetMathUnknown with name "frac" by an empty
 752                 // InsetMathFrac -> a pos value > 0 is invalid.
 753                 // A side effect is that an undo before the macro is finished
 754                 // undoes the complete macro, not only the last character.
 755                 if (!cur.inMacroMode())
 756                         cur.recordUndo();
 757
 758                 // spacial handling of space. If we insert an inset
 759                 // via macro mode, we want to put the cursor inside it
 760                 // if relevant. Think typing "\frac<space>".
 761                 if (cmd.argument()[0] == ' '
 762                     && cur.inMacroMode() && cur.macroName() != "\\"
 763                     && cur.macroModeClose()) {
 764                         MathAtom const atom = cur.prevAtom();
 765                         if (atom->asNestInset() && atom->isActive()) {
 766                                 cur.posBackward();
 767                                 cur.pushBackward(*cur.nextInset());
 768                         }
 769                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 770                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 771                         cur.undispatched();
 772                 }
 773                 break;
 774
 775         //case LFUN_SERVER_GET_XY:
 776         //      sprintf(dispatch_buffer, "%d %d",);
 777         //      break;
 778
 779         case LFUN_SERVER_SET_XY: {
 780                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 781                 int x = 0;
 782                 int y = 0;
 783                 istringstream is(to_utf8(cmd.argument()));
 784                 is >> x >> y;
 785                 cur.setScreenPos(x, y);
 786                 break;
 787         }
 788
 789         // Special casing for superscript in case of LyX handling
 790         // dead-keys:
 791         case LFUN_ACCENT_CIRCUMFLEX:
 792                 if (cmd.argument().empty()) {
 793                         // do superscript if LyX handles
 794                         // deadkeys
 795                         cur.recordUndo();
 796                         script(cur, true, grabAndEraseSelection(cur));
 797                 }
 798                 break;
 799
 800         case LFUN_ACCENT_UMLAUT:
 801         case LFUN_ACCENT_ACUTE:
 802         case LFUN_ACCENT_GRAVE:
 803         case LFUN_ACCENT_BREVE:
 804         case LFUN_ACCENT_DOT:
 805         case LFUN_ACCENT_MACRON:
 806         case LFUN_ACCENT_CARON:
 807         case LFUN_ACCENT_TILDE:
 808         case LFUN_ACCENT_CEDILLA:
 809         case LFUN_ACCENT_CIRCLE:
 810         case LFUN_ACCENT_UNDERDOT:
 811         case LFUN_ACCENT_TIE:
 812         case LFUN_ACCENT_OGONEK:
 813         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 814                 break;
 815
 816         //  Math fonts
 817         case LFUN_FONT_FREE_APPLY:
 818         case LFUN_FONT_FREE_UPDATE:
 819                 handleFont2(cur, cmd.argument());
 820                 break;
 821
 822         case LFUN_FONT_BOLD:
 823                 if (currentMode() == TEXT_MODE)
 824                         handleFont(cur, cmd.argument(), "textbf");
 825                 else
 826                         handleFont(cur, cmd.argument(), "mathbf");
 827                 break;
 828         case LFUN_FONT_SANS:
 829                 if (currentMode() == TEXT_MODE)
 830                         handleFont(cur, cmd.argument(), "textsf");
 831                 else
 832                         handleFont(cur, cmd.argument(), "mathsf");
 833                 break;
 834         case LFUN_FONT_EMPH:
 835                 if (currentMode() == TEXT_MODE)
 836                         handleFont(cur, cmd.argument(), "emph");
 837                 else
 838                         handleFont(cur, cmd.argument(), "mathcal");
 839                 break;
 840         case LFUN_FONT_ROMAN:
 841                 if (currentMode() == TEXT_MODE)
 842                         handleFont(cur, cmd.argument(), "textrm");
 843                 else
 844                         handleFont(cur, cmd.argument(), "mathrm");
 845                 break;
 846         case LFUN_FONT_TYPEWRITER:
 847                 if (currentMode() == TEXT_MODE)
 848                         handleFont(cur, cmd.argument(), "texttt");
 849                 else
 850                         handleFont(cur, cmd.argument(), "mathtt");
 851                 break;
 852         case LFUN_FONT_FRAK:
 853                 handleFont(cur, cmd.argument(), "mathfrak");
 854                 break;
 855         case LFUN_FONT_ITAL:
 856                 if (currentMode() == TEXT_MODE)
 857                         handleFont(cur, cmd.argument(), "textit");
 858                 else
 859                         handleFont(cur, cmd.argument(), "mathit");
 860                 break;
 861         case LFUN_FONT_NOUN:
 862                 if (currentMode() == TEXT_MODE)
 863                         // FIXME: should be "noun"
 864                         handleFont(cur, cmd.argument(), "textsc");
 865                 else
 866                         handleFont(cur, cmd.argument(), "mathbb");
 867                 break;
 868         /*
 869         case LFUN_FONT_FREE_APPLY:
 870                 handleFont(cur, cmd.argument(), "textrm");
 871                 break;
 872         */
 873         case LFUN_FONT_DEFAULT:
 874                 handleFont(cur, cmd.argument(), "textnormal");
 875                 break;
 876
 877         case LFUN_MATH_MODE: {
 878 #if 1
 879                 // ignore math-mode on when already in math mode
 880                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
 881                         break;
 882                 cur.macroModeClose();
 883                 docstring const save_selection = grabAndEraseSelection(cur);
 884                 selClearOrDel(cur);
 885                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 886                 cur.plainInsert(MathAtom(new InsetMathBox(from_ascii("mbox"))));
 887                 cur.posBackward();
 888                 cur.pushBackward(*cur.nextInset());
 889                 cur.niceInsert(save_selection);
 890 #else
 891                 if (currentMode() == Inset::TEXT_MODE) {
 892                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 893                         cur.message(_("create new math text environment ($...$)"));
 894                 } else {
 895                         handleFont(cur, cmd.argument(), "textrm");
 896                         cur.message(_("entered math text mode (textrm)"));
 897                 }
 898 #endif
 899                 break;
 900         }
 901
 902         case LFUN_MATH_SIZE:
 903 #if 0
 904                 cur.recordUndo();
 905                 cur.setSize(arg);
 906 #endif
 907                 break;
 908
 909         case LFUN_MATH_MATRIX: {
 910                 cur.recordUndo();
 911                 unsigned int m = 1;
 912                 unsigned int n = 1;
 913                 docstring v_align;
 914                 docstring h_align;
 915                 idocstringstream is(cmd.argument());
 916                 is >> m >> n >> v_align >> h_align;
 917                 if (m < 1)
 918                         m = 1;
 919                 if (n < 1)
 920                         n = 1;
 921                 v_align += 'c';
 922                 cur.niceInsert(
 923                         MathAtom(new InsetMathArray(from_ascii("array"), m, n, (char)v_align[0], h_align)));
 924                 break;
 925         }
 926
 927         case LFUN_MATH_DELIM: {
 928                 docstring ls;
 929                 docstring rs = split(cmd.argument(), ls, ' ');
 930                 // Reasonable default values
 931                 if (ls.empty())
 932                         ls = '(';
 933                 if (rs.empty())
 934                         rs = ')';
 935                 cur.recordUndo();
 936                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
 937                 break;
 938         }
 939
 940         case LFUN_MATH_BIGDELIM: {
 941                 docstring const lname  = from_utf8(cmd.getArg(0));
 942                 docstring const ldelim = from_utf8(cmd.getArg(1));
 943                 docstring const rname  = from_utf8(cmd.getArg(2));
 944                 docstring const rdelim = from_utf8(cmd.getArg(3));
 945                 latexkeys const * l = in_word_set(lname);
 946                 bool const have_l = l && l->inset == "big" &&
 947                                     InsetMathBig::isBigInsetDelim(ldelim);
 948                 l = in_word_set(rname);
 949                 bool const have_r = l && l->inset == "big" &&
 950                                     InsetMathBig::isBigInsetDelim(rdelim);
 951                 // We mimic LFUN_MATH_DELIM in case we have an empty left
 952                 // or right delimiter.
 953                 if (have_l || have_r) {
 954                         cur.recordUndo();
 955                         docstring const selection = grabAndEraseSelection(cur);
 956                         selClearOrDel(cur);
 957                         if (have_l)
 958                                 cur.insert(MathAtom(new InsetMathBig(lname,
 959                                                                 ldelim)));
 960                         cur.niceInsert(selection);
 961                         if (have_r)
 962                                 cur.insert(MathAtom(new InsetMathBig(rname,
 963                                                                 rdelim)));
 964                 }
 965                 // Don't call cur.undispatched() if we did nothing, this would
 966                 // lead to infinite recursion via Text::dispatch().
 967                 break;
 968         }
 969
 970         case LFUN_SPACE_INSERT:
 971         case LFUN_MATH_SPACE:
 972                 cur.recordUndo();
 973                 cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
 974                 break;
 975
 976         case LFUN_ERT_INSERT:
 977                 // interpret this as if a backslash was typed
 978                 cur.recordUndo();
 979                 interpretChar(cur, '\\');
 980                 break;
 981
 982         case LFUN_MATH_SUBSCRIPT:
 983                 // interpret this as if a _ was typed
 984                 cur.recordUndo();
 985                 interpretChar(cur, '_');
 986                 break;
 987
 988         case LFUN_MATH_SUPERSCRIPT:
 989                 // interpret this as if a ^ was typed
 990                 cur.recordUndo();
 991                 interpretChar(cur, '^');
 992                 break;
 993
 994         case LFUN_MATH_MACRO_FOLD:
 995         case LFUN_MATH_MACRO_UNFOLD: {
 996                 Cursor it = cur;
 997                 bool fold = cmd.action == LFUN_MATH_MACRO_FOLD;
 998                 bool found = findMacroToFoldUnfold(it, fold);
 999                 if (found) {
1000                         MathMacro * macro = it.nextInset()->asInsetMath()->asMacro();
1001                         cur.recordUndoInset();
1002                         if (fold)
1003                                 macro->fold(cur);
1004                         else
1005                                 macro->unfold(cur);
1006                 }
1007                 break;
1008         }
1009
1010         case LFUN_QUOTE_INSERT:
1011                 // interpret this as if a straight " was typed
1012                 cur.recordUndo();
1013                 interpretChar(cur, '\"');
1014                 break;
1015
1016 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
1017 // handling such that "self-insert" works on "arbitrary stuff" too, and
1018 // math-insert only handles special math things like "matrix".
1019         case LFUN_MATH_INSERT: {
1020                 cur.recordUndo();
1021                 if (cmd.argument() == "^" || cmd.argument() == "_") {
1022                         interpretChar(cur, cmd.argument()[0]);
1023                 } else
1024                         cur.niceInsert(cmd.argument());
1025                 break;
1026                 }
1027
1028         case LFUN_DIALOG_SHOW_NEW_INSET: {
1029                 docstring const & name = cmd.argument();
1030                 string data;
1031                 if (name == "ref") {
1032                         InsetMathRef tmp(name);
1033                         data = tmp.createDialogStr(to_utf8(name));
1034                 }
1035                 cur.bv().showDialog(to_utf8(name), data);
1036                 break;
1037         }
1038
1039         case LFUN_INSET_INSERT: {
1040                 MathData ar;
1041                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1042                         cur.recordUndo();
1043                         cur.insert(ar);
1044                 } else
1045                         cur.undispatched();
1046                 break;
1047         }
1048         case LFUN_INSET_DISSOLVE:
1049                 if (!asHullInset()) {
1050                         cur.recordUndoInset();
1051                         cur.pullArg();
1052                 }
1053                 break;
1054
1055         default:
1056                 InsetMath::doDispatch(cur, cmd);
1057                 break;
1058         }
1059 }
1060
1061
1062 bool InsetMathNest::findMacroToFoldUnfold(Cursor & it, bool fold) const {
1063         // look for macro to open/close, but stay in mathed
1064         for (; !it.empty(); it.pop_back()) {
1065
1066                 // go backward through the current cell
1067                 Inset * inset = it.nextInset();
1068                 while (inset && inset->asInsetMath()) {
1069                         MathMacro * macro = inset->asInsetMath()->asMacro();
1070                         if (macro) {
1071                                 // found the an macro to open/close?
1072                                 if (macro->folded() != fold)
1073                                         return true;
1074
1075                                 // Wrong folding state.
1076                                 // If this was the first we see in this slice, look further left,
1077                                 // otherwise go up.
1078                                 if (inset != it.nextInset())
1079                                         break;
1080                         }
1081
1082                         // go up if this was the left most position
1083                         if (it.pos() == 0)
1084                                 break;
1085
1086                         // go left
1087                         it.pos()--;
1088                         inset = it.nextInset();
1089                 }
1090         }
1091
1092         return false;
1093 }
1094
1095
1096 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1097                 FuncStatus & flag) const
1098 {
1099         // the font related toggles
1100         //string tc = "mathnormal";
1101         bool ret = true;
1102         string const arg = to_utf8(cmd.argument());
1103         switch (cmd.action) {
1104         case LFUN_TABULAR_FEATURE:
1105                 flag.enabled(false);
1106                 break;
1107 #if 0
1108         case LFUN_TABULAR_FEATURE:
1109                 // FIXME: check temporarily disabled
1110                 // valign code
1111                 char align = mathcursor::valign();
1112                 if (align == '\0') {
1113                         enable = false;
1114                         break;
1115                 }
1116                 if (cmd.argument().empty()) {
1117                         flag.clear();
1118                         break;
1119                 }
1120                 if (!contains("tcb", cmd.argument()[0])) {
1121                         enable = false;
1122                         break;
1123                 }
1124                 flag.setOnOff(cmd.argument()[0] == align);
1125                 break;
1126 #endif
1127         /// We have to handle them since 1.4 blocks all unhandled actions
1128         case LFUN_FONT_ITAL:
1129         case LFUN_FONT_BOLD:
1130         case LFUN_FONT_SANS:
1131         case LFUN_FONT_EMPH:
1132         case LFUN_FONT_TYPEWRITER:
1133         case LFUN_FONT_NOUN:
1134         case LFUN_FONT_ROMAN:
1135         case LFUN_FONT_DEFAULT:
1136                 flag.enabled(true);
1137                 break;
1138         case LFUN_MATH_MUTATE:
1139                 //flag.setOnOff(mathcursor::formula()->hullType() == to_utf8(cmd.argument()));
1140                 flag.setOnOff(false);
1141                 break;
1142
1143         // we just need to be in math mode to enable that
1144         case LFUN_MATH_SIZE:
1145         case LFUN_MATH_SPACE:
1146         case LFUN_MATH_LIMITS:
1147         case LFUN_MATH_EXTERN:
1148                 flag.enabled(true);
1149                 break;
1150
1151         case LFUN_FONT_FRAK:
1152                 flag.enabled(currentMode() != TEXT_MODE);
1153                 break;
1154
1155         case LFUN_MATH_INSERT: {
1156                 bool const textarg =
1157                         arg == "\\textbf"   || arg == "\\textsf" ||
1158                         arg == "\\textrm"   || arg == "\\textmd" ||
1159                         arg == "\\textit"   || arg == "\\textsc" ||
1160                         arg == "\\textsl"   || arg == "\\textup" ||
1161                         arg == "\\texttt"   || arg == "\\textbb" ||
1162                         arg == "\\textnormal";
1163                 flag.enabled(currentMode() != TEXT_MODE || textarg);
1164                 break;
1165         }
1166
1167         case LFUN_MATH_MATRIX:
1168                 flag.enabled(currentMode() == MATH_MODE);
1169                 break;
1170
1171         case LFUN_INSET_INSERT: {
1172                 // Don't test createMathInset_fromDialogStr(), since
1173                 // getStatus is not called with a valid reference and the
1174                 // dialog would not be applyable.
1175                 string const name = cmd.getArg(0);
1176                 flag.enabled(name == "ref");
1177                 break;
1178         }
1179
1180         case LFUN_MATH_DELIM:
1181         case LFUN_MATH_BIGDELIM:
1182                 // Don't do this with multi-cell selections
1183                 flag.enabled(cur.selBegin().idx() == cur.selEnd().idx());
1184                 break;
1185
1186         case LFUN_MATH_MACRO_FOLD:
1187         case LFUN_MATH_MACRO_UNFOLD: {
1188                 Cursor it = cur;
1189                 bool found = findMacroToFoldUnfold(it, cmd.action == LFUN_MATH_MACRO_FOLD);
1190                 flag.enabled(found);
1191                 break;
1192         }
1193
1194         case LFUN_SPECIALCHAR_INSERT:
1195                 // FIXME: These would probably make sense in math-text mode
1196                 flag.enabled(false);
1197                 break;
1198
1199         case LFUN_INSET_DISSOLVE:
1200                 flag.enabled(!asHullInset());
1201                 break;
1202
1203         default:
1204                 ret = false;
1205                 break;
1206         }
1207         return ret;
1208 }
1209
1210
1211 void InsetMathNest::edit(Cursor & cur, bool front, EntryDirection entry_from)
1212 {
1213         cur.push(*this);
1214         bool enter_front = (entry_from == Inset::ENTRY_DIRECTION_RIGHT ||
1215                 (entry_from == Inset::ENTRY_DIRECTION_IGNORE && front));
1216         cur.idx() = enter_front ? 0 : cur.lastidx();
1217         cur.pos() = enter_front ? 0 : cur.lastpos();
1218         cur.resetAnchor();
1219         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1220 }
1221
1222
1223 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1224 {
1225         int idx_min = 0;
1226         int dist_min = 1000000;
1227         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1228                 int const d = cell(i).dist(cur.bv(), x, y);
1229                 if (d < dist_min) {
1230                         dist_min = d;
1231                         idx_min = i;
1232                 }
1233         }
1234         MathData & ar = cell(idx_min);
1235         cur.push(*this);
1236         cur.idx() = idx_min;
1237         cur.pos() = ar.x2pos(&cur.bv(), x - ar.xo(cur.bv()));
1238
1239         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1240         if (dist_min == 0) {
1241                 // hit inside cell
1242                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1243                         if (ar[i]->covers(cur.bv(), x, y))
1244                                 return ar[i].nucleus()->editXY(cur, x, y);
1245         }
1246         return this;
1247 }
1248
1249
1250 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1251 {
1252         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1253         BufferView & bv = cur.bv();
1254         bool do_selection = cmd.button() == mouse_button::button1
1255                 && cmd.argument() == "region-select";
1256         bv.mouseSetCursor(cur, do_selection);
1257         if (cmd.button() == mouse_button::button1) {
1258                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1259                 // Update the cursor update flags as needed:
1260                 //
1261                 // Update::Decoration: tells to update the decoration
1262                 //                     (visual box corners that define
1263                 //                     the inset)/
1264                 // Update::FitCursor: adjust the screen to the cursor
1265                 //                    position if needed
1266                 // cur.result().update(): don't overwrite previously set flags.
1267                 cur.updateFlags(Update::Decoration | Update::FitCursor
1268                                 | cur.result().update());
1269         } else if (cmd.button() == mouse_button::button2) {
1270                 if (cap::selection()) {
1271                         // See comment in Text::dispatch why we do this
1272                         cap::copySelectionToStack();
1273                         cmd = FuncRequest(LFUN_PASTE, "0");
1274                         doDispatch(bv.cursor(), cmd);
1275                 } else {
1276                         MathData ar;
1277                         asArray(theSelection().get(), ar);
1278                         bv.cursor().insert(ar);
1279                 }
1280         }
1281 }
1282
1283
1284 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1285 {
1286         // only select with button 1
1287         if (cmd.button() == mouse_button::button1) {
1288                 Cursor & bvcur = cur.bv().cursor();
1289                 if (bvcur.anchor_.hasPart(cur)) {
1290                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1291                         bvcur.setCursor(cur);
1292                         bvcur.selection() = true;
1293                         //lyxerr << "MOTION " << bvcur << endl;
1294                 } else
1295                         cur.undispatched();
1296         }
1297 }
1298
1299
1300 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1301 {
1302         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1303
1304         if (cmd.button() == mouse_button::button1) {
1305                 if (!cur.selection())
1306                         cur.noUpdate();
1307                 else {
1308                         Cursor & bvcur = cur.bv().cursor();
1309                         bvcur.selection() = true;
1310                 }
1311                 return;
1312         }
1313
1314         cur.undispatched();
1315 }
1316
1317
1318 bool InsetMathNest::interpretChar(Cursor & cur, char_type c)
1319 {
1320         //lyxerr << "interpret 2: '" << c << "'" << endl;
1321         docstring save_selection;
1322         if (c == '^' || c == '_')
1323                 save_selection = grabAndEraseSelection(cur);
1324
1325         cur.clearTargetX();
1326
1327         // handle macroMode
1328         if (cur.inMacroMode()) {
1329                 docstring name = cur.macroName();
1330
1331                 /// are we currently typing '#1' or '#2' or...?
1332                 if (name == "\\#") {
1333                         cur.backspace();
1334                         int n = c - '0';
1335                         if (n >= 1 && n <= 9)
1336                                 cur.insert(new MathMacroArgument(n));
1337                         return true;
1338                 }
1339
1340                 if (isAlphaASCII(c)) {
1341                         cur.activeMacro()->setName(name + docstring(1, c));
1342                         return true;
1343                 }
1344
1345                 // handle 'special char' macros
1346                 if (name == "\\") {
1347                         // remove the '\\'
1348                         if (c == '\\') {
1349                                 cur.backspace();
1350                                 if (currentMode() == InsetMath::TEXT_MODE)
1351                                         cur.niceInsert(createInsetMath("textbackslash"));
1352                                 else
1353                                         cur.niceInsert(createInsetMath("backslash"));
1354                         } else if (c == '{') {
1355                                 cur.backspace();
1356                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1357                         } else if (c == '%') {
1358                                 cur.backspace();
1359                                 cur.niceInsert(MathAtom(new InsetMathComment));
1360                         } else if (c == '#') {
1361                                 BOOST_ASSERT(cur.activeMacro());
1362                                 cur.activeMacro()->setName(name + docstring(1, c));
1363                         } else {
1364                                 cur.backspace();
1365                                 cur.niceInsert(createInsetMath(docstring(1, c)));
1366                         }
1367                         return true;
1368                 }
1369
1370                 // One character big delimiters. The others are handled in
1371                 // interpretString().
1372                 latexkeys const * l = in_word_set(name.substr(1));
1373                 if (name[0] == '\\' && l && l->inset == "big") {
1374                         docstring delim;
1375                         switch (c) {
1376                         case '{':
1377                                 delim = from_ascii("\\{");
1378                                 break;
1379                         case '}':
1380                                 delim = from_ascii("\\}");
1381                                 break;
1382                         default:
1383                                 delim = docstring(1, c);
1384                                 break;
1385                         }
1386                         if (InsetMathBig::isBigInsetDelim(delim)) {
1387                                 // name + delim ared a valid InsetMathBig.
1388                                 // We can't use cur.macroModeClose() because
1389                                 // it does not handle delim.
1390                                 InsetMathUnknown * p = cur.activeMacro();
1391                                 p->finalize();
1392                                 --cur.pos();
1393                                 cur.cell().erase(cur.pos());
1394                                 cur.plainInsert(MathAtom(
1395                                         new InsetMathBig(name.substr(1), delim)));
1396                                 return true;
1397                         }
1398                 }
1399
1400                 // leave macro mode and try again if necessary
1401                 cur.macroModeClose();
1402                 if (c == '{')
1403                         cur.niceInsert(MathAtom(new InsetMathBrace));
1404                 else if (c != ' ')
1405                         interpretChar(cur, c);
1406                 return true;
1407         }
1408
1409         // This is annoying as one has to press <space> far too often.
1410         // Disable it.
1411
1412 #if 0
1413                 // leave autocorrect mode if necessary
1414                 if (autocorrect() && c == ' ') {
1415                         autocorrect() = false;
1416                         return true;
1417                 }
1418 #endif
1419
1420         // just clear selection on pressing the space bar
1421         if (cur.selection() && c == ' ') {
1422                 cur.selection() = false;
1423                 return true;
1424         }
1425
1426         selClearOrDel(cur);
1427
1428         if (c == '\\') {
1429                 //lyxerr << "starting with macro" << endl;
1430                 cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), false)));
1431                 return true;
1432         }
1433
1434         if (c == '\n') {
1435                 if (currentMode() == InsetMath::TEXT_MODE)
1436                         cur.insert(c);
1437                 return true;
1438         }
1439
1440         if (c == ' ') {
1441                 if (currentMode() == InsetMath::TEXT_MODE) {
1442                         // insert spaces in text mode,
1443                         // but suppress direct insertion of two spaces in a row
1444                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1445                         // it is better than nothing...
1446                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ') {
1447                                 cur.insert(c);
1448                                 // FIXME: we have to enable full redraw here because of the
1449                                 // visual box corners that define the inset. If we know for
1450                                 // sure that we stay within the same cell we can optimize for
1451                                 // that using:
1452                                 //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1453                         }
1454                         return true;
1455                 }
1456                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1457                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1458                         // FIXME: we have to enable full redraw here because of the
1459                         // visual box corners that define the inset. If we know for
1460                         // sure that we stay within the same cell we can optimize for
1461                         // that using:
1462                         //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1463                         return true;
1464                 }
1465
1466                 if (cur.popForward()) {
1467                         // FIXME: we have to enable full redraw here because of the
1468                         // visual box corners that define the inset. If we know for
1469                         // sure that we stay within the same cell we can optimize for
1470                         // that using:
1471                         //cur.updateFlags(Update::FitCursor);
1472                         return true;
1473                 }
1474
1475                 // if we are at the very end, leave the formula
1476                 return cur.pos() != cur.lastpos();
1477         }
1478
1479         // These shouldn't work in text mode:
1480         if (currentMode() != InsetMath::TEXT_MODE) {
1481                 if (c == '_') {
1482                         script(cur, false, save_selection);
1483                         return true;
1484                 }
1485                 if (c == '^') {
1486                         script(cur, true, save_selection);
1487                         return true;
1488                 }
1489                 if (c == '~') {
1490                         cur.niceInsert(createInsetMath("sim"));
1491                         return true;
1492                 }
1493         }
1494
1495         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1496             c == '%' || c == '_' || c == '^') {
1497                 cur.niceInsert(createInsetMath(docstring(1, c)));
1498                 return true;
1499         }
1500
1501
1502         // try auto-correction
1503         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1504         //      return true;
1505
1506         // no special circumstances, so insert the character without any fuss
1507         cur.insert(c);
1508         cur.autocorrect() = true;
1509         return true;
1510 }
1511
1512
1513 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1514 {
1515         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1516         // possible
1517         if (!cur.empty() && cur.pos() > 0 &&
1518             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1519                 if (InsetMathBig::isBigInsetDelim(str)) {
1520                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1521                         if (prev[0] == '\\') {
1522                                 prev = prev.substr(1);
1523                                 latexkeys const * l = in_word_set(prev);
1524                                 if (l && l->inset == "big") {
1525                                         cur.cell()[cur.pos() - 1] =
1526                                                 MathAtom(new InsetMathBig(prev, str));
1527                                         return true;
1528                                 }
1529                         }
1530                 }
1531         }
1532         return false;
1533 }
1534
1535
1536 bool InsetMathNest::script(Cursor & cur, bool up,
1537                 docstring const & save_selection)
1538 {
1539         // Hack to get \^ and \_ working
1540         //lyxerr << "handling script: up: " << up << endl;
1541         if (cur.inMacroMode() && cur.macroName() == "\\") {
1542                 if (up)
1543                         cur.niceInsert(createInsetMath("mathcircumflex"));
1544                 else
1545                         interpretChar(cur, '_');
1546                 return true;
1547         }
1548
1549         cur.macroModeClose();
1550         if (asScriptInset() && cur.idx() == 0) {
1551                 // we are in a nucleus of a script inset, move to _our_ script
1552                 InsetMathScript * inset = asScriptInset();
1553                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1554                 inset->ensure(up);
1555                 cur.idx() = inset->idxOfScript(up);
1556                 cur.pos() = 0;
1557         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1558                 --cur.pos();
1559                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1560                 cur.push(*inset);
1561                 inset->ensure(up);
1562                 cur.idx() = inset->idxOfScript(up);
1563                 cur.pos() = cur.lastpos();
1564         } else {
1565                 // convert the thing to our left to a scriptinset or create a new
1566                 // one if in the very first position of the array
1567                 if (cur.pos() == 0) {
1568                         //lyxerr << "new scriptinset" << endl;
1569                         cur.insert(new InsetMathScript(up));
1570                 } else {
1571                         //lyxerr << "converting prev atom " << endl;
1572                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1573                 }
1574                 --cur.pos();
1575                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1576                 // See comment in MathParser.cpp for special handling of {}-bases
1577
1578                 cur.push(*inset);
1579                 cur.idx() = 1;
1580                 cur.pos() = 0;
1581         }
1582         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1583         cur.niceInsert(save_selection);
1584         cur.resetAnchor();
1585         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1586         return true;
1587 }
1588
1589
1590 bool InsetMathNest::completionSupported(Cursor const & cur) const
1591 {
1592         return cur.inMacroMode();
1593 }
1594
1595
1596 bool InsetMathNest::inlineCompletionSupported(Cursor const & cur) const
1597 {
1598         return cur.inMacroMode();
1599 }
1600
1601
1602 bool InsetMathNest::automaticInlineCompletion() const
1603 {
1604         return lyxrc.completion_inline_math;
1605 }
1606
1607
1608 bool InsetMathNest::automaticPopupCompletion() const
1609 {
1610         return lyxrc.completion_popup_math;
1611 }
1612
1613
1614 Inset::CompletionList const * InsetMathNest::completionList(Cursor const & cur) const
1615 {
1616         if (!cur.inMacroMode())
1617                 return 0;
1618
1619         return new MathCompletionList(cur);
1620 }
1621
1622
1623 docstring InsetMathNest::completionPrefix(Cursor const & cur) const
1624 {
1625         if (!cur.inMacroMode())
1626                 return docstring();
1627
1628         return cur.activeMacro()->name();
1629 }
1630
1631
1632 bool InsetMathNest::insertCompletion(Cursor & cur, docstring const & s,
1633                                      bool finished)
1634 {
1635         if (!cur.inMacroMode())
1636                 return false;
1637
1638         // append completion to active macro
1639         InsetMathUnknown * inset = cur.activeMacro();
1640         inset->setName(inset->name() + s);
1641
1642         // finish macro
1643         if (finished) {
1644 #if 0
1645                 // FIXME: this creates duplicates in the completion popup
1646                 // which looks ugly. Moreover the changes the list lengths
1647                 // which seems to
1648                 confuse the popup as well.
1649                 MathCompletionList::addToFavorites(inset->name());
1650 #endif
1651                 lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, " "));
1652         }
1653
1654         return true;
1655 }
1656
1657
1658 void InsetMathNest::completionPosAndDim(Cursor const & cur, int & x, int & y,
1659                                         Dimension & dim) const
1660 {
1661         Inset const * inset = cur.activeMacro();
1662         if (!inset)
1663                 return;
1664
1665         // get inset dimensions
1666         dim = cur.bv().coordCache().insets().dim(inset);
1667         // FIXME: these 3 are no accurate, but should depend on the font.
1668         // Now the popup jumps down if you enter a char with descent > 0.
1669         dim.des += 3;
1670         dim.asc += 3;
1671
1672         // and position
1673         Point xy
1674         = cur.bv().coordCache().insets().xy(inset);
1675         x = xy.x_;
1676         y = xy.y_;
1677 }
1678
1679
1680 bool InsetMathNest::cursorMathForward(Cursor & cur)
1681 {
1682         if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
1683                 cur.pushBackward(*cur.nextAtom().nucleus());
1684                 cur.inset().idxFirst(cur);
1685                 return true;
1686         }
1687         if (cur.posForward() || idxForward(cur) || cur.selection())
1688                 return true;
1689         // try to pop forwards --- but don't pop out of math! leave that to
1690         // the FINISH lfuns
1691         int s = cur.depth() - 2;
1692         if (s >= 0 && cur[s].inset().asInsetMath())
1693                 return cur.popForward();
1694         return false;
1695 }
1696
1697
1698 bool InsetMathNest::cursorMathBackward(Cursor & cur)
1699 {
1700         if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
1701                 cur.posBackward();
1702                 cur.push(*cur.nextAtom().nucleus());
1703                 cur.inset().idxLast(cur);
1704                 return true;
1705         }
1706         if (cur.posBackward() || idxBackward(cur) || cur.selection())
1707                 return true;
1708         // try to pop backwards --- but don't pop out of math! leave that to
1709         // the FINISH lfuns
1710         int s = cur.depth() - 2;
1711         if (s >= 0 && cur[s].inset().asInsetMath())
1712                 return cur.popBackward();
1713         return false;
1714 }
1715
1716
1717 ////////////////////////////////////////////////////////////////////
1718
1719 MathCompletionList::MathCompletionList(Cursor const & cur)
1720 {
1721         // fill it with macros from the buffer
1722         Buffer::MacroNameSet macros;
1723         cur.buffer().listMacroNames(macros);
1724         Buffer::MacroNameSet::const_iterator it;
1725         for (it = macros.begin(); it != macros.end(); ++it) {
1726                 if (cur.buffer().getMacro(*it, cur, false))
1727                         locals.push_back("\\" + *it);
1728         }
1729         sort(locals.begin(), locals.end());
1730
1731         if (globals.size() > 0)
1732                 return;
1733
1734         // fill in global macros
1735         macros.clear();
1736         MacroTable::globalMacros().getMacroNames(macros);
1737         lyxerr << "Globals completion macros: ";
1738         for (it = macros.begin(); it != macros.end(); ++it) {
1739                 lyxerr << "\\" + *it << " ";
1740                 globals.push_back("\\" + *it);
1741         }
1742         lyxerr << std::endl;
1743
1744         // fill in global commands
1745         globals.push_back(from_ascii("\\boxed"));
1746         globals.push_back(from_ascii("\\fbox"));
1747         globals.push_back(from_ascii("\\framebox"));
1748         globals.push_back(from_ascii("\\makebox"));
1749         globals.push_back(from_ascii("\\kern"));
1750         globals.push_back(from_ascii("\\xrightarrow"));
1751         globals.push_back(from_ascii("\\xleftarrow"));
1752         globals.push_back(from_ascii("\\split"));
1753         globals.push_back(from_ascii("\\gathered"));
1754         globals.push_back(from_ascii("\\aligned"));
1755         globals.push_back(from_ascii("\\alignedat"));
1756         globals.push_back(from_ascii("\\cases"));
1757         globals.push_back(from_ascii("\\substack"));
1758         globals.push_back(from_ascii("\\subarray"));
1759         globals.push_back(from_ascii("\\array"));
1760         globals.push_back(from_ascii("\\sqrt"));
1761         globals.push_back(from_ascii("\\root"));
1762         globals.push_back(from_ascii("\\tabular"));
1763         globals.push_back(from_ascii("\\stackrel"));
1764         globals.push_back(from_ascii("\\binom"));
1765         globals.push_back(from_ascii("\\choose"));
1766         globals.push_back(from_ascii("\\choose"));
1767         globals.push_back(from_ascii("\\frac"));
1768         globals.push_back(from_ascii("\\over"));
1769         globals.push_back(from_ascii("\\nicefrac"));
1770         globals.push_back(from_ascii("\\unitfrac"));
1771         globals.push_back(from_ascii("\\unitfracthree"));
1772         globals.push_back(from_ascii("\\unitone"));
1773         globals.push_back(from_ascii("\\unittwo"));
1774         globals.push_back(from_ascii("\\infer"));
1775         globals.push_back(from_ascii("\\atop"));
1776         globals.push_back(from_ascii("\\lefteqn"));
1777         globals.push_back(from_ascii("\\boldsymbol"));
1778         globals.push_back(from_ascii("\\color"));
1779         globals.push_back(from_ascii("\\normalcolor"));
1780         globals.push_back(from_ascii("\\textcolor"));
1781         globals.push_back(from_ascii("\\dfrac"));
1782         globals.push_back(from_ascii("\\tfrac"));
1783         globals.push_back(from_ascii("\\dbinom"));
1784         globals.push_back(from_ascii("\\tbinom"));
1785         globals.push_back(from_ascii("\\hphantom"));
1786         globals.push_back(from_ascii("\\phantom"));
1787         globals.push_back(from_ascii("\\vphantom"));
1788         WordList const & words = mathedWordList();
1789         WordList::const_iterator it2;
1790         lyxerr << "Globals completion commands: ";
1791         for (it2 = words.begin(); it2 != words.end(); ++it2) {
1792                 globals.push_back("\\" + (*it2).first);
1793                 lyxerr << "\\" + (*it2).first << " ";
1794         }
1795         lyxerr << std::endl;
1796         sort(globals.begin(), globals.end());
1797 }
1798
1799
1800 MathCompletionList::~MathCompletionList()
1801 {
1802 }
1803
1804
1805 size_type MathCompletionList::size() const
1806 {
1807         return locals.size() + globals.size();
1808 }
1809
1810
1811 docstring MathCompletionList::data(size_t idx) const
1812 {
1813         size_t lsize = locals.size();
1814         if (idx >= lsize)
1815                 return globals[idx - lsize];
1816         else
1817                 return locals[idx];
1818 }
1819
1820
1821 std::string MathCompletionList::icon(size_t idx) const
1822 {
1823         // get the latex command
1824         docstring cmd;
1825         size_t lsize = locals.size();
1826         if (idx >= lsize)
1827                 cmd = globals[idx - lsize];
1828         else
1829                 cmd = locals[idx];
1830
1831         // get the icon resource name by stripping the backslash
1832         return "images/math/" + to_utf8(cmd.substr(1)) + ".png";
1833 }
1834
1835 std::vector<docstring> MathCompletionList::globals;
1836
1837 } // namespace lyx