3 * Purpose: Interaction for mathed
4 * Author: Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
5 * Created: January 1996
6 * Description: Math interaction for a WYSIWYG math editor.
8 * Dependencies: Xlib, XForms
10 * Copyright: 1996, Alejandro Aguilar Sierra
12 * Version: 0.8beta, Math & Lyx project.
14 * You are free to use and modify this code under the terms of
15 * the GNU General Public Licence version 2 or later.
22 #pragma implementation
25 #include "support/lstrings.h"
26 #include "support/LAssert.h"
27 #include "BufferView.h"
30 #include "frontends/Painter.h"
31 #include "math_cursor.h"
32 #include "formulabase.h"
33 #include "funcrequest.h"
34 #include "math_autocorrect.h"
35 #include "math_arrayinset.h"
36 #include "math_braceinset.h"
37 #include "math_commentinset.h"
38 #include "math_charinset.h"
39 #include "math_extern.h"
40 #include "math_factory.h"
41 #include "math_hullinset.h"
42 #include "math_iterator.h"
43 #include "math_macroarg.h"
44 #include "math_macrotemplate.h"
45 #include "math_mathmlstream.h"
46 #include "math_parser.h"
47 #include "math_replace.h"
48 #include "math_scriptinset.h"
49 #include "math_spaceinset.h"
50 #include "math_support.h"
51 #include "math_unknowninset.h"
63 using std::ostringstream;
67 // matheds own cut buffer
68 MathGridInset theCutBuffer = MathGridInset(1, 1);
71 MathCursor::MathCursor(InsetFormulaBase * formula, bool front)
72 : formula_(formula), autocorrect_(false), selection_(false)
74 front ? first() : last();
79 MathCursor::~MathCursor()
81 // ensure that 'notifyCursorLeave' is called
87 void MathCursor::push(MathAtom & t)
89 Cursor_.push_back(MathCursorPos(t.nucleus()));
93 void MathCursor::pushLeft(MathAtom & t)
95 //lyxerr << "Entering atom " << t << " left\n";
97 t->idxFirst(idx(), pos());
101 void MathCursor::pushRight(MathAtom & t)
103 //lyxerr << "Entering atom " << t << " right\n";
106 t->idxLast(idx(), pos());
110 bool MathCursor::popLeft()
112 //cerr << "Leaving atom to the left\n";
115 par()->notifyCursorLeaves();
118 par()->notifyCursorLeaves();
124 bool MathCursor::popRight()
126 //cerr << "Leaving atom "; par()->write(cerr, false); cerr << " right\n";
129 par()->notifyCursorLeaves();
132 par()->notifyCursorLeaves();
141 void MathCursor::dump(char const * what) const
143 lyxerr << "MC: " << what << "\n";
144 lyxerr << " Cursor: " << depth() << "\n";
145 for (unsigned i = 0; i < depth(); ++i)
146 lyxerr << " i: " << i << " " << Cursor_[i] << "\n";
147 lyxerr << " Anchor: " << Anchor_.size() << "\n";
148 for (unsigned i = 0; i < Anchor_.size(); ++i)
149 lyxerr << " i: " << i << " " << Anchor_[i] << "\n";
150 lyxerr << " sel: " << selection_ << "\n";
153 void MathCursor::dump(char const *) const {}
157 bool MathCursor::isInside(MathInset const * p) const
159 for (unsigned i = 0; i < depth(); ++i)
160 if (Cursor_[i].par_ == p)
166 bool MathCursor::openable(MathAtom const & t, bool sel) const
175 // we can't move into anything new during selection
176 if (depth() == Anchor_.size())
178 if (t.operator->() != Anchor_[depth()].par_)
185 bool MathCursor::inNucleus() const
187 return par()->asScriptInset() && idx() == 2;
191 bool MathCursor::posLeft()
200 bool MathCursor::posRight()
209 bool MathCursor::left(bool sel)
212 autocorrect_ = false;
213 targetx_ = -1; // "no target"
220 if (hasPrevAtom() && openable(prevAtom(), sel)) {
221 pushRight(prevAtom());
225 return posLeft() || idxLeft() || popLeft() || selection_;
229 bool MathCursor::right(bool sel)
232 autocorrect_ = false;
233 targetx_ = -1; // "no target"
240 if (hasNextAtom() && openable(nextAtom(), sel)) {
241 pushLeft(nextAtom());
245 return posRight() || idxRight() || popRight() || selection_;
249 void MathCursor::first()
252 push(formula_->par());
253 par()->idxFirst(idx(), pos());
257 void MathCursor::last()
260 push(formula_->par());
261 par()->idxLast(idx(), pos());
265 bool positionable(MathIterator const & cursor, MathIterator const & anchor)
267 // avoid deeper nested insets when selecting
268 if (cursor.size() > anchor.size())
271 // anchor might be deeper, should have same path then
272 for (MathIterator::size_type i = 0; i < cursor.size(); ++i)
273 if (cursor[i].par_ != anchor[i].par_)
276 // position should be ok.
281 void MathCursor::setPos(int x, int y)
284 bool res = bruteFind(x, y,
285 formula()->xlow(), formula()->xhigh(),
286 formula()->ylow(), formula()->yhigh());
288 // this can happen on creation of "math-display"
292 targetx_ = -1; // "no target"
298 bool MathCursor::home(bool sel)
301 autocorrect_ = false;
304 if (!par()->idxHome(idx(), pos()))
307 targetx_ = -1; // "no target"
312 bool MathCursor::end(bool sel)
315 autocorrect_ = false;
318 if (!par()->idxEnd(idx(), pos()))
321 targetx_ = -1; // "no target"
326 void MathCursor::plainErase()
328 array().erase(pos());
332 void MathCursor::markInsert()
334 //lyxerr << "inserting mark\n";
335 array().insert(pos(), MathAtom(new MathCharInset(0)));
339 void MathCursor::markErase()
341 //lyxerr << "deleting mark\n";
342 array().erase(pos());
346 void MathCursor::plainInsert(MathAtom const & t)
349 array().insert(pos(), t);
354 void MathCursor::insert(string const & str)
356 //lyxerr << "inserting '" << str << "'\n";
358 for (string::const_iterator it = str.begin(); it != str.end(); ++it)
359 plainInsert(MathAtom(new MathCharInset(*it)));
363 void MathCursor::insert(char c)
365 //lyxerr << "inserting '" << c << "'\n";
367 plainInsert(MathAtom(new MathCharInset(c)));
371 void MathCursor::insert(MathAtom const & t)
379 void MathCursor::niceInsert(MathAtom const & t)
382 MathGridInset safe = grabAndEraseSelection();
384 // enter the new inset and move the contents of the selection if possible
387 pushLeft(nextAtom());
393 void MathCursor::insert(MathArray const & ar)
399 array().insert(pos(), ar);
404 void MathCursor::paste(MathArray const & ar)
408 array().insert(pos(), ar);
413 void MathCursor::paste(MathGridInset const & data)
416 WriteStream wi(os, false, false);
418 dispatch(FuncRequest(LFUN_PASTE, os.str()));
422 void MathCursor::backspace()
424 autocorrect_ = false;
436 if (prevAtom()->asScriptInset()) {
437 // simply enter nucleus
454 void MathCursor::erase()
456 autocorrect_ = false;
465 // delete empty cells if possible
467 if (par()->idxDelete(idx()))
470 // old behaviour when in last position of cell
471 if (pos() == size()) {
472 par()->idxGlue(idx());
477 // if we are standing in front of a script inset, grab item before us and
478 // move it into nucleus
479 // and remove first thing.
480 if (hasNextAtom() && nextAtom()->asScriptInset()) {
482 MathAtom at = prevAtom();
484 array().erase(pos());
485 pushLeft(nextAtom());
487 array().push_back(at);
492 pushLeft(nextAtom());
503 bool MathCursor::up(bool sel)
508 MathIterator save = Cursor_;
512 autocorrect_ = false;
517 bool MathCursor::down(bool sel)
522 MathIterator save = Cursor_;
526 autocorrect_ = false;
531 bool MathCursor::toggleLimits()
533 if (!hasNextAtom() || !nextAtom()->asScriptInset())
535 MathScriptInset * t = nextAtom().nucleus()->asScriptInset();
536 int old = t->limits();
537 t->limits(old < 0 ? 1 : -1);
538 return old != t->limits();
542 void MathCursor::macroModeClose()
546 MathUnknownInset * p = activeMacro();
548 string s = p->name();
550 array().erase(pos());
556 string MathCursor::macroName() const
558 return inMacroMode() ? activeMacro()->name() : string();
562 void MathCursor::selClear()
569 void MathCursor::selCopy()
573 theCutBuffer = grabSelection();
576 theCutBuffer = MathGridInset(1, 1);
581 void MathCursor::selCut()
584 theCutBuffer = grabAndEraseSelection();
588 void MathCursor::selDel()
598 void MathCursor::selPaste()
608 void MathCursor::selHandle(bool sel)
610 if (sel == selection_)
618 void MathCursor::selStart()
628 void MathCursor::selClearOrDel()
630 if (lyxrc.auto_region_delete)
637 void MathCursor::selGet(MathArray & ar)
641 ar = grabSelection().glue();
645 void MathCursor::drawSelection(MathPainterInfo & pi) const
651 getSelection(i1, i2);
652 i1.par_->drawSelection(pi, i1.idx_, i1.pos_, i2.idx_, i2.pos_);
656 void MathCursor::handleNest(MathAtom const & a)
659 at.nucleus()->cell(0) = grabAndEraseSelection().glue();
661 pushRight(prevAtom());
665 void MathCursor::getPos(int & x, int & y)
667 par()->getPos(idx(), pos(), x, y);
671 MathInset * MathCursor::par() const
673 return cursor().par_;
677 InsetFormulaBase * MathCursor::formula() const
683 MathCursor::idx_type MathCursor::idx() const
685 return cursor().idx_;
689 MathCursor::idx_type & MathCursor::idx()
691 return cursor().idx_;
695 MathCursor::pos_type MathCursor::pos() const
697 return cursor().pos_;
701 MathCursor::pos_type & MathCursor::pos()
703 return cursor().pos_;
707 bool MathCursor::inMacroMode() const
711 MathUnknownInset const * p = prevAtom()->asUnknownInset();
712 return p && !p->final();
716 MathUnknownInset * MathCursor::activeMacro()
718 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
722 MathUnknownInset const * MathCursor::activeMacro() const
724 return inMacroMode() ? prevAtom()->asUnknownInset() : 0;
728 bool MathCursor::inMacroArgMode() const
730 return pos() > 0 && prevAtom()->getChar() == '#';
734 bool MathCursor::selection() const
740 MathGridInset * MathCursor::enclosingGrid(MathCursor::idx_type & idx) const
742 for (MathInset::difference_type i = depth() - 1; i >= 0; --i) {
743 MathGridInset * p = Cursor_[i].par_->asGridInset();
745 idx = Cursor_[i].idx_;
753 void MathCursor::popToHere(MathInset const * p)
755 while (depth() && Cursor_.back().par_ != p)
760 void MathCursor::popToEnclosingGrid()
762 while (depth() && !Cursor_.back().par_->asGridInset())
767 void MathCursor::popToEnclosingHull()
769 while (depth() && !Cursor_.back().par_->asHullInset())
774 void MathCursor::pullArg()
777 MathArray a = array();
780 array().insert(pos(), a);
783 formula()->mutateToText();
788 void MathCursor::touch()
790 MathIterator::const_iterator it = Cursor_.begin();
791 MathIterator::const_iterator et = Cursor_.end();
792 for ( ; it != et; ++it)
797 void MathCursor::normalize()
799 if (idx() >= par()->nargs()) {
800 lyxerr << "this should not really happen - 1: "
801 << idx() << " " << par()->nargs() << " in: " << par() << "\n";
804 idx() = min(idx(), par()->nargs() - 1);
806 if (pos() > size()) {
807 lyxerr << "this should not really happen - 2: "
808 << pos() << " " << size() << " in idx: " << idx()
810 WriteStream wi(lyxerr, false, true);
815 pos() = min(pos(), size());
817 // remove empty scripts if possible
819 for (pos_type i = 0; i < size(); ++i) {
820 MathScriptInset * p = array()[i].nucleus()->asScriptInset();
822 p->removeEmptyScripts();
829 // fix again position
830 pos() = min(pos(), size());
834 MathCursor::size_type MathCursor::size() const
836 return array().size();
840 bool MathCursor::hasPrevAtom() const
846 bool MathCursor::hasNextAtom() const
848 return pos() < size();
852 MathAtom const & MathCursor::prevAtom() const
854 lyx::Assert(pos() > 0);
855 return array()[pos() - 1];
859 MathAtom & MathCursor::prevAtom()
861 lyx::Assert(pos() > 0);
862 return array()[pos() - 1];
866 MathAtom const & MathCursor::nextAtom() const
868 lyx::Assert(pos() < size());
869 return array()[pos()];
873 MathAtom & MathCursor::nextAtom()
875 lyx::Assert(pos() < size());
876 return array()[pos()];
880 MathArray & MathCursor::array() const
882 static MathArray dummy;
884 if (idx() >= par()->nargs()) {
885 lyxerr << "############ idx_ " << idx() << " not valid\n";
890 lyxerr << "############ depth() == 0 not valid\n";
894 return cursor().cell();
898 void MathCursor::idxNext()
900 par()->idxNext(idx(), pos());
904 void MathCursor::idxPrev()
906 par()->idxPrev(idx(), pos());
910 char MathCursor::valign() const
913 MathGridInset * p = enclosingGrid(idx);
914 return p ? p->valign() : '\0';
918 char MathCursor::halign() const
921 MathGridInset * p = enclosingGrid(idx);
922 return p ? p->halign(idx % p->ncols()) : '\0';
926 void MathCursor::getSelection(MathCursorPos & i1, MathCursorPos & i2) const
928 MathCursorPos anc = normalAnchor();
929 if (anc < cursor()) {
939 MathCursorPos & MathCursor::cursor()
941 lyx::Assert(depth());
942 return Cursor_.back();
946 MathCursorPos const & MathCursor::cursor() const
948 lyx::Assert(depth());
949 return Cursor_.back();
953 bool MathCursor::goUpDown(bool up)
955 // Be warned: The 'logic' implemented in this function is highly fragile.
956 // A distance of one pixel or a '<' vs '<=' _really_ matters.
957 // So fiddle around with it only if you know what you are doing!
962 // check if we had something else in mind, if not, this is the future goal
968 // try neigbouring script insets
971 MathScriptInset const * p = prevAtom()->asScriptInset();
972 if (p && p->has(up)) {
975 idx() = up; // the superscript has index 1
977 ///lyxerr << "updown: handled by scriptinset to the left\n";
984 MathScriptInset const * p = nextAtom()->asScriptInset();
985 if (p && p->has(up)) {
989 ///lyxerr << "updown: handled by scriptinset to the right\n";
995 //xarray().boundingBox(xlow, xhigh, ylow, yhigh);
1000 //if (bruteFind(xo, yo, xlow, xhigh, ylow, yhigh)) {
1001 // lyxerr << "updown: handled by brute find in the same cell\n";
1005 // try to find an inset that knows better then we
1007 ///lyxerr << "updown: We are in " << *par() << " idx: " << idx() << '\n';
1009 if (par()->idxUpDown(idx(), pos(), up, targetx_))
1012 // no such inset found, just take something "above"
1013 ///lyxerr << "updown: handled by strange case\n";
1019 up ? formula()->ylow() : yo + 4,
1020 up ? yo - 4 : formula()->yhigh()
1023 // any improvement so far?
1026 if (up ? ynew < yo : ynew > yo)
1032 bool MathCursor::bruteFind
1033 (int x, int y, int xlow, int xhigh, int ylow, int yhigh)
1035 MathIterator best_cursor;
1036 double best_dist = 1e10;
1038 MathIterator it = ibegin(formula()->par().nucleus());
1039 MathIterator et = iend(formula()->par().nucleus());
1041 // avoid invalid nesting when selecting
1042 if (!selection_ || positionable(it, Anchor_)) {
1044 it.back().getPos(xo, yo);
1045 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
1046 double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
1047 // '<=' in order to take the last possible position
1048 // this is important for clicking behind \sum in e.g. '\sum_i a'
1049 if (d <= best_dist) {
1061 if (best_dist < 1e10)
1062 Cursor_ = best_cursor;
1063 return best_dist < 1e10;
1067 bool MathCursor::idxLineLast()
1069 idx() -= idx() % par()->ncols();
1070 idx() += par()->ncols() - 1;
1075 bool MathCursor::idxLeft()
1077 return par()->idxLeft(idx(), pos());
1081 bool MathCursor::idxRight()
1083 return par()->idxRight(idx(), pos());
1087 bool MathCursor::interpret(string const & s)
1089 //lyxerr << "interpret 1: '" << s << "'\n";
1093 //lyxerr << "char: '" << s[0] << "' int: " << int(s[0]) << endl;
1094 //owner_->getIntl()->getTransManager().TranslateAndInsert(s[0], lt);
1095 //lyxerr << "trans: '" << s[0] << "' int: " << int(s[0]) << endl;
1097 if (s.size() >= 6 && s.substr(0, 6) == "matrix") {
1102 istringstream is(s.substr(6).c_str());
1103 is >> m >> n >> v_align >> h_align;
1107 niceInsert(MathAtom(new MathArrayInset("array", m, n, v_align[0], h_align)));
1111 if (s.size() >= 7 && s.substr(0, 7) == "replace") {
1113 istringstream is(s.substr(7).c_str());
1116 mathed_parse_cell(rep.from, from);
1117 mathed_parse_cell(rep.to, to);
1118 lyxerr << "replacing '" << from << "' with '" << to << "'\n";
1119 par()->replace(rep);
1123 string name = s.substr(1);
1125 if (name == "over" || name == "choose" || name == "atop") {
1126 MathAtom t(createMathInset(name));
1127 t.nucleus()->asNestInset()->cell(0) = array();
1136 // prevent entering of recursive macros
1137 if (formula()->lyxCode() == Inset::MATHMACRO_CODE
1138 && formula()->getInsetName() == name)
1140 lyxerr << "can't enter recursive macro\n";
1144 niceInsert(createMathInset(name));
1149 bool MathCursor::script(bool up)
1151 // Hack to get \\^ and \\_ working
1152 if (inMacroMode() && macroName() == "\\") {
1154 interpret("\\mathcircumflex");
1161 MathGridInset safe = grabAndEraseSelection();
1163 // we are in a nucleus of a script inset, move to _our_ script
1164 par()->asScriptInset()->ensure(up);
1167 } else if (hasPrevAtom() && prevAtom()->asScriptInset()) {
1168 prevAtom().nucleus()->asScriptInset()->ensure(up);
1169 pushRight(prevAtom());
1172 } else if (hasPrevAtom()) {
1174 array()[pos()] = MathAtom(new MathScriptInset(nextAtom(), up));
1175 pushLeft(nextAtom());
1179 plainInsert(MathAtom(new MathScriptInset(up)));
1180 prevAtom().nucleus()->asScriptInset()->ensure(up);
1181 pushRight(prevAtom());
1191 bool MathCursor::interpret(char c)
1193 //lyxerr << "interpret 2: '" << c << "'\n";
1194 targetx_ = -1; // "no target"
1195 if (inMacroArgMode()) {
1199 MathMacroTemplate const * p = formula()->par()->asMacroTemplate();
1200 if (p && 1 <= n && n <= p->numargs())
1201 insert(MathAtom(new MathMacroArgument(c - '0')));
1203 insert(createMathInset("#"));
1204 interpret(c); // try again
1210 if (inMacroMode()) {
1211 string name = macroName();
1212 //lyxerr << "interpret name: '" << name << "'\n";
1214 if (name.empty() && c == '\\') {
1216 interpret("\\backslash");
1221 activeMacro()->setName(activeMacro()->name() + c);
1225 // handle 'special char' macros
1230 interpret("\\backslash");
1232 interpret(string("\\") + c);
1236 // leave macro mode and try again if necessary
1243 // This is annoying as one has to press <space> far too often.
1247 // leave autocorrect mode if necessary
1248 if (autocorrect_ && c == ' ') {
1249 autocorrect_ = false;
1254 // just clear selection on pressing the space bar
1255 if (selection_ && c == ' ') {
1263 //lyxerr << "starting with macro\n";
1264 insert(MathAtom(new MathUnknownInset("\\", false)));
1269 if (currentMode() == MathInset::TEXT_MODE)
1275 if (currentMode() == MathInset::TEXT_MODE) {
1276 // insert spaces in text mode,
1277 // but suppress direct insertion of two spaces in a row
1278 // the still allows typing '<space>a<space>' and deleting the 'a', but
1279 // it is better than nothing...
1280 if (!hasPrevAtom() || prevAtom()->getChar() != ' ')
1284 if (hasPrevAtom() && prevAtom()->asSpaceInset()) {
1285 prevAtom().nucleus()->asSpaceInset()->incSpace();
1290 // if are at the very end, leave the formula
1291 return pos() != size();
1295 insert(c); // LM_TC_TEX;
1300 if (c == '{' || c == '}', c)) {
1301 insert(c); // LM_TC_TEX;
1307 niceInsert(MathAtom(new MathBraceInset));
1316 insert(createMathInset("$"));
1321 niceInsert(MathAtom(new MathCommentInset));
1326 if (isalpha(c) && lastcode_ == LM_TC_GREEK) {
1327 insert(c, LM_TC_VAR);
1331 if (isalpha(c) && lastcode_ == LM_TC_GREEK1) {
1332 insert(c, LM_TC_VAR);
1333 lastcode_ = LM_TC_VAR;
1338 insert(c, LM_TC_TEX);
1339 //bv->owner()->message(_("TeX mode"));
1344 // try auto-correction
1345 //if (autocorrect_ && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1348 // no special circumstances, so insert the character without any fuss
1350 autocorrect_ = true;
1355 void MathCursor::setSelection(MathIterator const & where, size_type n)
1364 void MathCursor::insetToggle()
1366 if (hasNextAtom()) {
1367 // toggle previous inset ...
1368 nextAtom().nucleus()->lock(!nextAtom()->lock());
1369 } else if (popLeft() && hasNextAtom()) {
1370 // ... or enclosing inset if we are in the last inset position
1371 nextAtom().nucleus()->lock(!nextAtom()->lock());
1377 string MathCursor::info() const
1380 os << "Math editor mode. ";
1381 for (int i = 0, n = depth(); i < n; ++i) {
1382 Cursor_[i].par_->infoize(os);
1386 if (prevAtom()->asSymbolInset() || prevAtom()->asScriptInset())
1387 prevAtom()->infoize(os);
1389 return os.str().c_str(); // .c_str() needed for lyxstring
1393 unsigned MathCursor::depth() const
1395 return Cursor_.size();
1403 void region(MathCursorPos const & i1, MathCursorPos const & i2,
1404 MathInset::row_type & r1, MathInset::row_type & r2,
1405 MathInset::col_type & c1, MathInset::col_type & c2)
1407 MathInset * p = i1.par_;
1408 c1 = p->col(i1.idx_);
1409 c2 = p->col(i2.idx_);
1412 r1 = p->row(i1.idx_);
1413 r2 = p->row(i2.idx_);
1421 MathGridInset MathCursor::grabSelection() const
1424 return MathGridInset();
1427 getSelection(i1, i2);
1428 // shouldn't we assert on i1.par_ == i2.par_?
1429 if (i1.idx_ == i2.idx_) {
1430 MathGridInset data(1, 1);
1431 MathArray::const_iterator it = i1.cell().begin();
1432 data.cell(0) = MathArray(it + i1.pos_, it + i2.pos_);
1437 region(i1, i2, r1, r2, c1, c2);
1438 MathGridInset data(c2 - c1 + 1, r2 - r1 + 1);
1439 for (row_type row = 0; row < data.nrows(); ++row)
1440 for (col_type col = 0; col < data.ncols(); ++col) {
1441 idx_type i = i1.par_->index(row + r1, col + c1);
1442 data.cell(data.index(row, col)) = i1.par_->cell(i);
1448 void MathCursor::eraseSelection()
1452 getSelection(i1, i2);
1453 if (i1.idx_ == i2.idx_)
1454 i1.cell().erase(i1.pos_, i2.pos_);
1456 MathInset * p = i1.par_;
1459 region(i1, i2, r1, r2, c1, c2);
1460 for (row_type row = r1; row <= r2; ++row)
1461 for (col_type col = c1; col <= c2; ++col)
1462 p->cell(p->index(row, col)).clear();
1468 MathGridInset MathCursor::grabAndEraseSelection()
1471 return MathGridInset();
1472 MathGridInset res = grabSelection();
1479 MathCursorPos MathCursor::normalAnchor() const
1481 if (Anchor_.size() < depth()) {
1483 lyxerr << "unusual Anchor size\n";
1485 //lyx::Assert(Anchor_.size() >= cursor.depth());
1486 // use Anchor on the same level as Cursor
1487 MathCursorPos normal = Anchor_[depth() - 1];
1488 if (depth() < Anchor_.size() && !(normal < cursor())) {
1489 // anchor is behind cursor -> move anchor behind the inset
1496 MathInset::result_type MathCursor::dispatch(FuncRequest const & cmd)
1498 // try to dispatch to adajcent items if they are not editable
1499 // actually, this should only happen for mouse clicks...
1502 if (hasNextAtom() && !openable(nextAtom(), false)) {
1503 MathInset::result_type res = nextAtom().nucleus()->dispatch(cmd, d1, d2);
1504 if (res != MathInset::UNDISPATCHED)
1507 if (hasPrevAtom() && !openable(prevAtom(), false)) {
1508 MathInset::result_type res = prevAtom().nucleus()->dispatch(cmd, d1, d2);
1509 if (res != MathInset::UNDISPATCHED)
1513 for (int i = Cursor_.size() - 1; i >= 0; --i) {
1514 MathCursorPos & pos = Cursor_[i];
1515 MathInset::result_type const res
1516 = pos.par_->dispatch(cmd, pos.idx_, pos.pos_);
1517 if (res != MathInset::UNDISPATCHED) {
1518 if (res == MathInset::DISPATCHED_POP) {
1519 Cursor_.shrink(i + 1);
1525 return MathInset::UNDISPATCHED;
1529 MathInset::mode_type MathCursor::currentMode() const
1531 for (int i = Cursor_.size() - 1; i >= 0; --i) {
1532 MathInset::mode_type res = Cursor_[i].par_->currentMode();
1533 if (res != MathInset::UNDECIDED_MODE)
1536 return MathInset::UNDECIDED_MODE;
1540 void releaseMathCursor(BufferView * bv)
1544 mathcursor->formula()->hideInsetCursor(bv);