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 "math_autocorrect.h"
34 #include "math_arrayinset.h"
35 #include "math_braceinset.h"
36 #include "math_casesinset.h"
37 #include "math_charinset.h"
38 #include "math_extern.h"
39 #include "math_factory.h"
40 #include "math_hullinset.h"
41 #include "math_iterator.h"
42 #include "math_macroarg.h"
43 #include "math_macrotemplate.h"
44 #include "math_mathmlstream.h"
45 #include "math_parser.h"
46 #include "math_replace.h"
47 #include "math_scriptinset.h"
48 #include "math_spaceinset.h"
49 #include "math_support.h"
50 #include "math_unknowninset.h"
62 using std::ostringstream;
66 // matheds own cut buffer
67 MathGridInset theCutBuffer = MathGridInset(1, 1);
70 MathCursor::MathCursor(InsetFormulaBase * formula, bool front)
71 : formula_(formula), autocorrect_(false), selection_(false)
73 front ? first() : last();
78 MathCursor::~MathCursor()
80 // ensure that 'notifyCursorLeave' is called
86 void MathCursor::push(MathAtom & t)
88 Cursor_.push_back(MathCursorPos(t.nucleus()));
92 void MathCursor::pushLeft(MathAtom & t)
94 //cerr << "Entering atom "; t->write(cerr, false); cerr << " left\n";
96 t->idxFirst(idx(), pos());
100 void MathCursor::pushRight(MathAtom & t)
102 //cerr << "Entering atom "; t->write(cerr, false); cerr << " right\n";
105 t->idxLast(idx(), pos());
109 bool MathCursor::popLeft()
111 //cerr << "Leaving atom to the left\n";
114 par()->notifyCursorLeaves();
117 par()->notifyCursorLeaves();
123 bool MathCursor::popRight()
125 //cerr << "Leaving atom "; par()->write(cerr, false); cerr << " right\n";
128 par()->notifyCursorLeaves();
131 par()->notifyCursorLeaves();
140 void MathCursor::dump(char const * what) const
142 lyxerr << "MC: " << what << "\n";
143 lyxerr << " Cursor: " << depth() << "\n";
144 for (unsigned i = 0; i < depth(); ++i)
145 lyxerr << " i: " << i << " " << Cursor_[i] << "\n";
146 lyxerr << " Anchor: " << Anchor_.size() << "\n";
147 for (unsigned i = 0; i < Anchor_.size(); ++i)
148 lyxerr << " i: " << i << " " << Anchor_[i] << "\n";
149 lyxerr << " sel: " << selection_ << "\n";
152 void MathCursor::dump(char const *) const {}
156 bool MathCursor::isInside(MathInset const * p) const
158 for (unsigned i = 0; i < depth(); ++i)
159 if (Cursor_[i].par_ == p)
165 bool MathCursor::openable(MathAtom const & t, bool sel) const
174 // we can't move into anything new during selection
175 if (depth() == Anchor_.size())
177 if (t.operator->() != Anchor_[depth()].par_)
184 bool MathCursor::inNucleus() const
186 return par()->asScriptInset() && idx() == 2;
190 bool MathCursor::posLeft()
199 bool MathCursor::posRight()
208 bool MathCursor::left(bool sel)
211 autocorrect_ = false;
212 targetx_ = -1; // "no target"
219 if (hasPrevAtom() && openable(prevAtom(), sel)) {
220 pushRight(prevAtom());
224 return posLeft() || idxLeft() || popLeft() || selection_;
228 bool MathCursor::right(bool sel)
231 autocorrect_ = false;
232 targetx_ = -1; // "no target"
239 if (hasNextAtom() && openable(nextAtom(), sel)) {
240 pushLeft(nextAtom());
244 return posRight() || idxRight() || popRight() || selection_;
248 void MathCursor::first()
251 push(formula_->par());
252 par()->idxFirst(idx(), pos());
256 void MathCursor::last()
259 push(formula_->par());
260 par()->idxLast(idx(), pos());
264 bool positionable(MathIterator const & cursor, MathIterator const & anchor)
266 // avoid deeper nested insets when selecting
267 if (cursor.size() > anchor.size())
270 // anchor might be deeper, should have same path then
271 for (MathIterator::size_type i = 0; i < cursor.size(); ++i)
272 if (cursor[i].par_ != anchor[i].par_)
275 // position should be ok.
280 void MathCursor::setPos(int x, int y)
283 bool res = bruteFind(x, y,
284 formula()->xlow(), formula()->xhigh(),
285 formula()->ylow(), formula()->yhigh());
287 // this can happen on creation of "math-display"
291 targetx_ = -1; // "no target"
297 bool MathCursor::home(bool sel)
300 autocorrect_ = false;
303 if (!par()->idxHome(idx(), pos()))
306 targetx_ = -1; // "no target"
311 bool MathCursor::end(bool sel)
314 autocorrect_ = false;
317 if (!par()->idxEnd(idx(), pos()))
320 targetx_ = -1; // "no target"
325 void MathCursor::plainErase()
327 array().erase(pos());
331 void MathCursor::markInsert()
333 //lyxerr << "inserting mark\n";
334 array().insert(pos(), MathAtom(new MathCharInset(0)));
338 void MathCursor::markErase()
340 //lyxerr << "deleting mark\n";
341 array().erase(pos());
345 void MathCursor::plainInsert(MathAtom const & t)
348 array().insert(pos(), t);
353 void MathCursor::insert(string const & str)
355 //lyxerr << "inserting '" << str << "'\n";
357 for (string::const_iterator it = str.begin(); it != str.end(); ++it)
358 plainInsert(MathAtom(new MathCharInset(*it)));
362 void MathCursor::insert(char c)
364 //lyxerr << "inserting '" << c << "'\n";
366 plainInsert(MathAtom(new MathCharInset(c)));
370 void MathCursor::insert(MathAtom const & t)
378 void MathCursor::niceInsert(MathAtom const & t)
381 MathGridInset safe = grabAndEraseSelection();
383 // enter the new inset and move the contents of the selection if possible
386 pushLeft(nextAtom());
392 void MathCursor::insert(MathArray const & ar)
398 array().insert(pos(), ar);
403 void MathCursor::paste(MathArray const & ar)
407 array().insert(pos(), ar);
412 void MathCursor::paste(MathGridInset const & data)
414 if (data.nargs() == 1) {
415 // single cell/part of cell
419 idx_type idx; // index of upper left cell
420 MathGridInset * p = enclosingGrid(idx);
421 col_type const numcols = min(data.ncols(), p->ncols() - p->col(idx));
422 row_type const numrows = min(data.nrows(), p->nrows() - p->row(idx));
423 for (row_type row = 0; row < numrows; ++row) {
424 for (col_type col = 0; col < numcols; ++col) {
425 idx_type i = p->index(row + p->row(idx), col + p->col(idx));
426 p->cell(i).append(data.cell(data.index(row, col)));
428 // append the left over horizontal cells to the last column
429 idx_type i = p->index(row + p->row(idx), p->ncols() - 1);
430 for (MathInset::col_type col = numcols; col < data.ncols(); ++col)
431 p->cell(i).append(data.cell(data.index(row, col)));
433 // append the left over vertical cells to the last _cell_
434 idx_type i = p->nargs() - 1;
435 for (row_type row = numrows; row < data.nrows(); ++row)
436 for (col_type col = 0; col < data.ncols(); ++col)
437 p->cell(i).append(data.cell(data.index(row, col)));
442 void MathCursor::backspace()
444 autocorrect_ = false;
456 if (prevAtom()->asScriptInset()) {
457 // simply enter nucleus
474 void MathCursor::erase()
476 autocorrect_ = false;
485 // delete empty cells if possible
487 if (par()->idxDelete(idx()))
490 // old behaviour when in last position of cell
491 if (pos() == size()) {
492 par()->idxGlue(idx());
497 // if we are standing in front of a script inset, grab item before us and
498 // move it into nucleus
499 // and remove first thing.
500 if (hasNextAtom() && nextAtom()->asScriptInset()) {
502 MathAtom at = prevAtom();
504 array().erase(pos());
505 pushLeft(nextAtom());
507 array().push_back(at);
512 pushLeft(nextAtom());
523 bool MathCursor::up(bool sel)
528 MathIterator save = Cursor_;
532 autocorrect_ = false;
537 bool MathCursor::down(bool sel)
542 MathIterator save = Cursor_;
546 autocorrect_ = false;
551 bool MathCursor::toggleLimits()
553 if (!hasNextAtom() || !nextAtom()->asScriptInset())
555 MathScriptInset * t = nextAtom().nucleus()->asScriptInset();
556 int old = t->limits();
557 t->limits(old < 0 ? 1 : -1);
558 return old != t->limits();
562 void MathCursor::macroModeClose()
566 MathUnknownInset * p = activeMacro();
568 string s = p->name();
570 array().erase(pos());
576 string MathCursor::macroName() const
578 return inMacroMode() ? activeMacro()->name() : string();
582 void MathCursor::selClear()
589 void MathCursor::selCopy()
593 theCutBuffer = grabSelection();
596 theCutBuffer = MathGridInset(1, 1);
601 void MathCursor::selCut()
604 theCutBuffer = grabAndEraseSelection();
608 void MathCursor::selDel()
618 void MathCursor::selPaste()
628 void MathCursor::selHandle(bool sel)
630 if (sel == selection_)
638 void MathCursor::selStart()
648 void MathCursor::selClearOrDel()
650 if (lyxrc.auto_region_delete)
657 void MathCursor::selGet(MathArray & ar)
661 ar = grabSelection().glue();
665 void MathCursor::drawSelection(MathPainterInfo & pi) const
671 getSelection(i1, i2);
672 i1.par_->drawSelection(pi, i1.idx_, i1.pos_, i2.idx_, i2.pos_);
676 void MathCursor::handleNest(MathAtom const & a)
679 at.nucleus()->cell(0) = grabAndEraseSelection().glue();
681 pushRight(prevAtom());
685 void MathCursor::getPos(int & x, int & y)
687 par()->getPos(idx(), pos(), x, y);
691 MathInset * MathCursor::par() const
693 return cursor().par_;
697 InsetFormulaBase * MathCursor::formula() const
703 MathCursor::idx_type MathCursor::idx() const
705 return cursor().idx_;
709 MathCursor::idx_type & MathCursor::idx()
711 return cursor().idx_;
715 MathCursor::pos_type MathCursor::pos() const
717 return cursor().pos_;
721 MathCursor::pos_type & MathCursor::pos()
723 return cursor().pos_;
727 bool MathCursor::inMacroMode() const
731 MathUnknownInset const * p = prevAtom()->asUnknownInset();
732 return p && !p->final();
736 MathUnknownInset * MathCursor::activeMacro()
738 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
742 MathUnknownInset const * MathCursor::activeMacro() const
744 return inMacroMode() ? prevAtom()->asUnknownInset() : 0;
748 bool MathCursor::inMacroArgMode() const
750 return pos() > 0 && prevAtom()->getChar() == '#';
754 bool MathCursor::selection() const
760 MathGridInset * MathCursor::enclosingGrid(MathCursor::idx_type & idx) const
762 for (MathInset::difference_type i = depth() - 1; i >= 0; --i) {
763 MathGridInset * p = Cursor_[i].par_->asGridInset();
765 idx = Cursor_[i].idx_;
773 MathHullInset * MathCursor::enclosingHull(MathCursor::idx_type & idx) const
775 for (MathInset::difference_type i = depth() - 1; i >= 0; --i) {
776 MathHullInset * p = Cursor_[i].par_->asHullInset();
778 idx = Cursor_[i].idx_;
786 void MathCursor::popToHere(MathInset const * p)
788 while (depth() && Cursor_.back().par_ != p)
793 void MathCursor::popToEnclosingGrid()
795 while (depth() && !Cursor_.back().par_->asGridInset())
800 void MathCursor::popToEnclosingHull()
802 while (depth() && !Cursor_.back().par_->asHullInset())
807 void MathCursor::pullArg()
810 MathArray a = array();
813 array().insert(pos(), a);
816 formula()->mutateToText();
821 void MathCursor::touch()
823 MathIterator::const_iterator it = Cursor_.begin();
824 MathIterator::const_iterator et = Cursor_.end();
825 for ( ; it != et; ++it)
830 void MathCursor::normalize()
832 if (idx() >= par()->nargs()) {
833 lyxerr << "this should not really happen - 1: "
834 << idx() << " " << par()->nargs() << " in: " << par() << "\n";
837 idx() = min(idx(), par()->nargs() - 1);
839 if (pos() > size()) {
840 lyxerr << "this should not really happen - 2: "
841 << pos() << " " << size() << " in idx: " << idx()
843 WriteStream wi(lyxerr, false, true);
848 pos() = min(pos(), size());
850 // remove empty scripts if possible
852 for (pos_type i = 0; i < size(); ++i) {
853 MathScriptInset * p = array()[i].nucleus()->asScriptInset();
855 p->removeEmptyScripts();
862 // fix again position
863 pos() = min(pos(), size());
867 MathCursor::size_type MathCursor::size() const
869 return array().size();
873 MathCursor::col_type MathCursor::hullCol() const
876 MathHullInset * p = enclosingHull(idx);
881 MathCursor::row_type MathCursor::hullRow() const
884 MathHullInset * p = enclosingHull(idx);
889 bool MathCursor::hasPrevAtom() const
895 bool MathCursor::hasNextAtom() const
897 return pos() < size();
901 MathAtom const & MathCursor::prevAtom() const
903 lyx::Assert(pos() > 0);
904 return array()[pos() - 1];
908 MathAtom & MathCursor::prevAtom()
910 lyx::Assert(pos() > 0);
911 return array()[pos() - 1];
915 MathAtom const & MathCursor::nextAtom() const
917 lyx::Assert(pos() < size());
918 return array()[pos()];
922 MathAtom & MathCursor::nextAtom()
924 lyx::Assert(pos() < size());
925 return array()[pos()];
929 MathArray & MathCursor::array() const
931 static MathArray dummy;
933 if (idx() >= par()->nargs()) {
934 lyxerr << "############ idx_ " << idx() << " not valid\n";
939 lyxerr << "############ depth() == 0 not valid\n";
943 return cursor().cell();
947 void MathCursor::idxNext()
949 par()->idxNext(idx(), pos());
953 void MathCursor::idxPrev()
955 par()->idxPrev(idx(), pos());
959 char MathCursor::valign() const
962 MathGridInset * p = enclosingGrid(idx);
963 return p ? p->valign() : '\0';
967 char MathCursor::halign() const
970 MathGridInset * p = enclosingGrid(idx);
971 return p ? p->halign(idx % p->ncols()) : '\0';
975 void MathCursor::getSelection(MathCursorPos & i1, MathCursorPos & i2) const
977 MathCursorPos anc = normalAnchor();
978 if (anc < cursor()) {
988 MathCursorPos & MathCursor::cursor()
990 lyx::Assert(depth());
991 return Cursor_.back();
995 MathCursorPos const & MathCursor::cursor() const
997 lyx::Assert(depth());
998 return Cursor_.back();
1002 bool MathCursor::goUpDown(bool up)
1004 // Be warned: The 'logic' implemented in this function is highly fragile.
1005 // A distance of one pixel or a '<' vs '<=' _really_ matters.
1006 // So fiddle around with it only if you know what you are doing!
1011 // check if we had something else in mind, if not, this is the future goal
1017 // try neigbouring script insets
1019 if (hasPrevAtom()) {
1020 MathScriptInset const * p = prevAtom()->asScriptInset();
1021 if (p && p->has(up)) {
1024 idx() = up; // the superscript has index 1
1026 ///lyxerr << "updown: handled by scriptinset to the left\n";
1032 if (hasNextAtom()) {
1033 MathScriptInset const * p = nextAtom()->asScriptInset();
1034 if (p && p->has(up)) {
1038 ///lyxerr << "updown: handled by scriptinset to the right\n";
1044 //xarray().boundingBox(xlow, xhigh, ylow, yhigh);
1049 //if (bruteFind(xo, yo, xlow, xhigh, ylow, yhigh)) {
1050 // lyxerr << "updown: handled by brute find in the same cell\n";
1054 // try to find an inset that knows better then we
1056 ///lyxerr << "updown: We are in " << *par() << " idx: " << idx() << '\n';
1058 if (par()->idxUpDown(idx(), pos(), up, targetx_))
1061 // no such inset found, just take something "above"
1062 ///lyxerr << "updown: handled by strange case\n";
1068 up ? formula()->ylow() : yo + 4,
1069 up ? yo - 4 : formula()->yhigh()
1072 // any improvement so far?
1075 if (up ? ynew < yo : ynew > yo)
1081 bool MathCursor::bruteFind
1082 (int x, int y, int xlow, int xhigh, int ylow, int yhigh)
1084 MathIterator best_cursor;
1085 double best_dist = 1e10;
1087 MathIterator it = ibegin(formula()->par().nucleus());
1088 MathIterator et = iend(formula()->par().nucleus());
1090 // avoid invalid nesting when selecting
1091 if (!selection_ || positionable(it, Anchor_)) {
1093 it.back().getPos(xo, yo);
1094 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
1095 double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
1096 // '<=' in order to take the last possible position
1097 // this is important for clicking behind \sum in e.g. '\sum_i a'
1098 if (d <= best_dist) {
1110 if (best_dist < 1e10)
1111 Cursor_ = best_cursor;
1112 return best_dist < 1e10;
1116 bool MathCursor::idxLineFirst()
1118 idx() -= idx() % par()->ncols();
1124 bool MathCursor::idxLineLast()
1126 idx() -= idx() % par()->ncols();
1127 idx() += par()->ncols() - 1;
1132 bool MathCursor::idxLeft()
1134 return par()->idxLeft(idx(), pos());
1138 bool MathCursor::idxRight()
1140 return par()->idxRight(idx(), pos());
1144 bool MathCursor::interpret(string const & s)
1146 //lyxerr << "interpret 1: '" << s << "'\n";
1150 //lyxerr << "char: '" << s[0] << "' int: " << int(s[0]) << endl;
1151 //owner_->getIntl()->getTransManager().TranslateAndInsert(s[0], lt);
1152 //lyxerr << "trans: '" << s[0] << "' int: " << int(s[0]) << endl;
1154 if (s.size() >= 5 && s.substr(0, 5) == "cases") {
1156 istringstream is(s.substr(5).c_str());
1159 niceInsert(MathAtom(new MathCasesInset(n)));
1163 if (s.size() >= 6 && s.substr(0, 6) == "matrix") {
1168 istringstream is(s.substr(6).c_str());
1169 is >> m >> n >> v_align >> h_align;
1173 niceInsert(MathAtom(new MathArrayInset("array", m, n, v_align[0], h_align)));
1177 if (s.size() >= 7 && s.substr(0, 7) == "replace") {
1179 istringstream is(s.substr(7).c_str());
1182 mathed_parse_cell(rep.from, from);
1183 mathed_parse_cell(rep.to, to);
1184 lyxerr << "replacing '" << from << "' with '" << to << "'\n";
1185 par()->replace(rep);
1189 string name = s.substr(1);
1191 if (name == "over" || name == "choose" || name == "atop") {
1192 MathAtom t(createMathInset(name));
1193 t.nucleus()->asNestInset()->cell(0) = array();
1202 // prevent entering of recursive macros
1203 if (formula()->lyxCode() == Inset::MATHMACRO_CODE
1204 && formula()->getInsetName() == name)
1206 lyxerr << "can't enter recursive macro\n";
1210 niceInsert(createMathInset(name));
1215 bool MathCursor::script(bool up)
1217 // Hack to get \\^ and \\_ working
1218 if (inMacroMode() && macroName() == "\\") {
1220 interpret("\\mathcircumflex");
1227 MathGridInset safe = grabAndEraseSelection();
1229 // we are in a nucleus of a script inset, move to _our_ script
1230 par()->asScriptInset()->ensure(up);
1233 } else if (hasPrevAtom() && prevAtom()->asScriptInset()) {
1234 prevAtom().nucleus()->asScriptInset()->ensure(up);
1235 pushRight(prevAtom());
1238 } else if (hasPrevAtom()) {
1240 array()[pos()] = MathAtom(new MathScriptInset(nextAtom(), up));
1241 pushLeft(nextAtom());
1245 plainInsert(MathAtom(new MathScriptInset(up)));
1246 prevAtom().nucleus()->asScriptInset()->ensure(up);
1247 pushRight(prevAtom());
1257 bool MathCursor::interpret(char c)
1259 //lyxerr << "interpret 2: '" << c << "'\n";
1260 targetx_ = -1; // "no target"
1261 if (inMacroArgMode()) {
1265 MathMacroTemplate const * p = formula()->par()->asMacroTemplate();
1266 if (p && 1 <= n && n <= p->numargs())
1267 insert(MathAtom(new MathMacroArgument(c - '0')));
1269 insert(createMathInset("#"));
1270 interpret(c); // try again
1276 if (inMacroMode()) {
1277 string name = macroName();
1278 //lyxerr << "interpret name: '" << name << "'\n";
1280 if (name.empty() && c == '\\') {
1282 interpret("\\backslash");
1287 activeMacro()->setName(activeMacro()->name() + c);
1291 // handle 'special char' macros
1296 interpret("\\backslash");
1298 interpret(string("\\") + c);
1302 // leave macro mode and try again if necessary
1309 // This is annoying as one has to press <space> far too often.
1313 // leave autocorrect mode if necessary
1314 if (autocorrect_ && c == ' ') {
1315 autocorrect_ = false;
1320 // just clear selection on pressing the space bar
1321 if (selection_ && c == ' ') {
1329 //lyxerr << "starting with macro\n";
1330 insert(MathAtom(new MathUnknownInset("\\", false)));
1335 if (currentMode() == MathInset::TEXT_MODE)
1341 if (currentMode() == MathInset::TEXT_MODE) {
1342 // insert spaces in text mode,
1343 // but suppress direct insertion of two spaces in a row
1344 // the still allows typing '<space>a<space>' and deleting the 'a', but
1345 // it is better than nothing...
1346 if (!hasPrevAtom() || prevAtom()->getChar() != ' ')
1350 if (hasPrevAtom() && prevAtom()->asSpaceInset()) {
1351 prevAtom().nucleus()->asSpaceInset()->incSpace();
1356 // if are at the very end, leave the formula
1357 return pos() != size();
1361 insert(c); // LM_TC_TEX;
1366 if (c == '{' || c == '}', c)) {
1367 insert(c); // LM_TC_TEX;
1373 niceInsert(MathAtom(new MathBraceInset));
1382 insert(createMathInset("$"));
1387 insert(createMathInset("%"));
1392 if (isalpha(c) && lastcode_ == LM_TC_GREEK) {
1393 insert(c, LM_TC_VAR);
1397 if (isalpha(c) && lastcode_ == LM_TC_GREEK1) {
1398 insert(c, LM_TC_VAR);
1399 lastcode_ = LM_TC_VAR;
1404 insert(c, LM_TC_TEX);
1405 //bv->owner()->message(_("TeX mode"));
1410 // try auto-correction
1411 //if (autocorrect_ && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1414 // no special circumstances, so insert the character without any fuss
1416 autocorrect_ = true;
1421 void MathCursor::setSelection(MathIterator const & where, size_type n)
1430 void MathCursor::insetToggle()
1432 if (hasNextAtom()) {
1433 // toggle previous inset ...
1434 nextAtom().nucleus()->lock(!nextAtom()->lock());
1435 } else if (popLeft() && hasNextAtom()) {
1436 // ... or enclosing inset if we are in the last inset position
1437 nextAtom().nucleus()->lock(!nextAtom()->lock());
1443 string MathCursor::info() const
1446 os << "Math editor mode. ";
1447 for (int i = 0, n = depth(); i < n; ++i) {
1448 Cursor_[i].par_->infoize(os);
1452 if (prevAtom()->asSymbolInset() || prevAtom()->asScriptInset())
1453 prevAtom()->infoize(os);
1455 return os.str().c_str(); // .c_str() needed for lyxstring
1459 unsigned MathCursor::depth() const
1461 return Cursor_.size();
1469 void region(MathCursorPos const & i1, MathCursorPos const & i2,
1470 MathInset::row_type & r1, MathInset::row_type & r2,
1471 MathInset::col_type & c1, MathInset::col_type & c2)
1473 MathInset * p = i1.par_;
1474 c1 = p->col(i1.idx_);
1475 c2 = p->col(i2.idx_);
1478 r1 = p->row(i1.idx_);
1479 r2 = p->row(i2.idx_);
1487 MathGridInset MathCursor::grabSelection() const
1490 return MathGridInset();
1493 getSelection(i1, i2);
1494 // shouldn't we assert on i1.par_ == i2.par_?
1495 if (i1.idx_ == i2.idx_) {
1496 MathGridInset data(1, 1);
1497 MathArray::const_iterator it = i1.cell().begin();
1498 data.cell(0) = MathArray(it + i1.pos_, it + i2.pos_);
1503 region(i1, i2, r1, r2, c1, c2);
1504 MathGridInset data(c2 - c1 + 1, r2 - r1 + 1);
1505 for (row_type row = 0; row < data.nrows(); ++row)
1506 for (col_type col = 0; col < data.ncols(); ++col) {
1507 idx_type i = i1.par_->index(row + r1, col + c1);
1508 data.cell(data.index(row, col)) = i1.par_->cell(i);
1514 void MathCursor::eraseSelection()
1518 getSelection(i1, i2);
1519 if (i1.idx_ == i2.idx_)
1520 i1.cell().erase(i1.pos_, i2.pos_);
1522 MathInset * p = i1.par_;
1525 region(i1, i2, r1, r2, c1, c2);
1526 for (row_type row = r1; row <= r2; ++row)
1527 for (col_type col = c1; col <= c2; ++col)
1528 p->cell(p->index(row, col)).clear();
1534 MathGridInset MathCursor::grabAndEraseSelection()
1537 return MathGridInset();
1538 MathGridInset res = grabSelection();
1545 MathCursorPos MathCursor::normalAnchor() const
1547 if (Anchor_.size() < depth()) {
1549 lyxerr << "unusual Anchor size\n";
1551 //lyx::Assert(Anchor_.size() >= cursor.depth());
1552 // use Anchor on the same level as Cursor
1553 MathCursorPos normal = Anchor_[depth() - 1];
1554 if (depth() < Anchor_.size() && !(normal < cursor())) {
1555 // anchor is behind cursor -> move anchor behind the inset
1563 void MathCursor::handleExtern(const string & arg)
1567 istringstream iss(arg.c_str());
1568 iss >> lang >> extra;
1575 lyxerr << "use selection: " << ar << "\n";
1576 insert(pipeThroughExtern(lang, extra, ar));
1581 eq.push_back(MathAtom(new MathCharInset('=')));
1583 popToEnclosingHull();
1586 MathHullInset * hull = enclosingHull(idx);
1590 if (hull->getType() == "simple") {
1591 MathArray::size_type pos = cursor().cell().find_last(eq);
1593 if (pos == size()) {
1595 lyxerr << "use whole cell: " << ar << "\n";
1597 ar = MathArray(array().begin() + pos + 1, array().end());
1598 lyxerr << "use partial cell form pos: " << pos << "\n";
1602 insert(pipeThroughExtern(lang, extra, ar));
1606 if (hull->getType() == "equation") {
1607 lyxerr << "use equation inset\n";
1608 hull->mutate("eqnarray");
1609 MathArray & ar = cursor().cell();
1610 lyxerr << "use cell: " << ar << "\n";
1612 cursor().cell() = eq;
1614 cursor().cell() = pipeThroughExtern(lang, extra, ar);
1620 lyxerr << "use eqnarray\n";
1622 MathArray ar = cursor().cell();
1623 lyxerr << "use cell: " << ar << "\n";
1624 #ifdef WITH_WARNINGS
1625 #warning temporarily disabled
1629 cursor().cell() = eq;
1631 cursor().cell() = pipeThroughExtern(lang, extra, ar);
1638 MathInset::result_type MathCursor::dispatch(FuncRequest const & cmd)
1640 // try to dispatch to adajcent items if they are not editable
1641 // actually, this should only happen for mouse clicks...
1644 if (hasNextAtom() && !openable(nextAtom(), false)) {
1645 MathInset::result_type res = nextAtom().nucleus()->dispatch(cmd, d1, d2);
1646 if (res != MathInset::UNDISPATCHED)
1649 if (hasPrevAtom() && !openable(prevAtom(), false)) {
1650 MathInset::result_type res = prevAtom().nucleus()->dispatch(cmd, d1, d2);
1651 if (res != MathInset::UNDISPATCHED)
1655 for (int i = Cursor_.size() - 1; i >= 0; --i) {
1656 MathCursorPos & pos = Cursor_[i];
1657 MathInset::result_type const res
1658 = pos.par_->dispatch(cmd, pos.idx_, pos.pos_);
1659 if (res != MathInset::UNDISPATCHED) {
1660 if (res == MathInset::DISPATCHED_POP) {
1661 Cursor_.shrink(i + 1);
1667 return MathInset::UNDISPATCHED;
1671 MathInset::mode_type MathCursor::currentMode() const
1673 for (int i = Cursor_.size() - 1; i >= 0; --i) {
1674 MathInset::mode_type res = Cursor_[i].par_->currentMode();
1675 if (res != MathInset::UNDECIDED_MODE)
1678 return MathInset::UNDECIDED_MODE;
1682 void releaseMathCursor(BufferView * bv)
1686 mathcursor->formula()->hideInsetCursor(bv);