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
173 if (t->asScriptInset())
177 // we can't move into anything new during selection
178 if (depth() == Anchor_.size())
180 if (t.nucleus() != Anchor_[depth()].par_)
187 bool MathCursor::posLeft()
196 bool MathCursor::posRight()
205 bool MathCursor::left(bool sel)
208 autocorrect_ = false;
209 targetx_ = -1; // "no target"
216 if (hasPrevAtom() && openable(prevAtom(), sel)) {
217 pushRight(prevAtom());
221 return posLeft() || idxLeft() || popLeft() || selection_;
225 bool MathCursor::right(bool sel)
228 autocorrect_ = false;
229 targetx_ = -1; // "no target"
236 if (hasNextAtom() && openable(nextAtom(), sel)) {
237 pushLeft(nextAtom());
241 return posRight() || idxRight() || popRight() || selection_;
245 void MathCursor::first()
248 push(formula_->par());
249 par()->idxFirst(idx(), pos());
253 void MathCursor::last()
256 push(formula_->par());
257 par()->idxLast(idx(), pos());
261 bool positionable(MathCursor::cursor_type const & cursor,
262 MathCursor::cursor_type const & anchor)
264 // avoid deeper nested insets when selecting
265 if (cursor.size() > anchor.size())
268 // anchor might be deeper, should have same path then
269 for (MathCursor::cursor_type::size_type i = 0; i < cursor.size(); ++i)
270 if (cursor[i].par_ != anchor[i].par_)
273 // position should be ok.
278 void MathCursor::setPos(int x, int y)
281 bool res = bruteFind(x, y,
282 formula()->xlow(), formula()->xhigh(),
283 formula()->ylow(), formula()->yhigh());
285 // this ccan happen on creation of "math-display"
294 bool MathCursor::home(bool sel)
297 autocorrect_ = false;
300 if (!par()->idxHome(idx(), pos()))
307 bool MathCursor::end(bool sel)
310 autocorrect_ = false;
313 if (!par()->idxEnd(idx(), pos()))
320 void MathCursor::plainErase()
322 array().erase(pos());
326 void MathCursor::markInsert()
328 //lyxerr << "inserting mark\n";
329 array().insert(pos(), MathAtom(new MathCharInset(0)));
333 void MathCursor::markErase()
335 //lyxerr << "deleting mark\n";
336 array().erase(pos());
340 void MathCursor::plainInsert(MathAtom const & t)
342 array().insert(pos(), t);
347 void MathCursor::insert(string const & str)
349 //lyxerr << "inserting '" << str << "'\n";
351 for (string::const_iterator it = str.begin(); it != str.end(); ++it)
352 plainInsert(MathAtom(new MathCharInset(*it)));
356 void MathCursor::insert(char c)
358 //lyxerr << "inserting '" << c << "'\n";
360 plainInsert(MathAtom(new MathCharInset(c)));
364 void MathCursor::insert(MathAtom const & t)
372 void MathCursor::niceInsert(MathAtom const & t)
375 MathGridInset safe = grabAndEraseSelection();
377 // enter the new inset and move the contents of the selection if possible
380 pushLeft(nextAtom());
386 void MathCursor::insert(MathArray const & ar)
392 array().insert(pos(), ar);
397 void MathCursor::paste(MathArray const & ar)
401 array().insert(pos(), ar);
406 void MathCursor::paste(MathGridInset const & data)
408 if (data.nargs() == 1) {
409 // single cell/part of cell
413 idx_type idx; // index of upper left cell
414 MathGridInset * p = enclosingGrid(idx);
415 col_type const numcols = min(data.ncols(), p->ncols() - p->col(idx));
416 row_type const numrows = min(data.nrows(), p->nrows() - p->row(idx));
417 for (row_type row = 0; row < numrows; ++row) {
418 for (col_type col = 0; col < numcols; ++col) {
419 idx_type i = p->index(row + p->row(idx), col + p->col(idx));
420 p->cell(i).push_back(data.cell(data.index(row, col)));
422 // append the left over horizontal cells to the last column
423 idx_type i = p->index(row + p->row(idx), p->ncols() - 1);
424 for (MathInset::col_type col = numcols; col < data.ncols(); ++col)
425 p->cell(i).push_back(data.cell(data.index(row, col)));
427 // append the left over vertical cells to the last _cell_
428 idx_type i = p->nargs() - 1;
429 for (row_type row = numrows; row < data.nrows(); ++row)
430 for (col_type col = 0; col < data.ncols(); ++col)
431 p->cell(i).push_back(data.cell(data.index(row, col)));
435 void MathCursor::backspace()
437 autocorrect_ = false;
448 MathScriptInset * p = prevAtom()->asScriptInset();
450 p->removeScript(p->hasUp());
451 // Don't delete if there is anything left
452 if (p->hasUp() || p->hasDown())
461 void MathCursor::erase()
463 autocorrect_ = false;
472 // delete empty cells if possible
474 if (par()->idxDelete(idx()))
477 // old behaviour when in last position of cell
478 if (pos() == size()) {
479 par()->idxGlue(idx());
483 MathScriptInset * p = nextAtom()->asScriptInset();
485 p->removeScript(p->hasUp());
486 // Don't delete if there is anything left
487 if (p->hasUp() || p->hasDown())
495 void MathCursor::delLine()
497 autocorrect_ = false;
505 if (par()->nrows() > 1) {
506 // grid are the only things with more than one row...
507 lyx::Assert(par()->asGridInset());
508 par()->asGridInset()->delRow(hullRow());
511 if (idx() >= par()->nargs())
512 idx() = par()->nargs() - 1;
519 bool MathCursor::up(bool sel)
524 cursor_type save = Cursor_;
528 autocorrect_ = false;
533 bool MathCursor::down(bool sel)
538 cursor_type save = Cursor_;
542 autocorrect_ = false;
547 bool MathCursor::toggleLimits()
551 MathScriptInset * t = nextAtom()->asScriptInset();
554 int old = t->limits();
555 t->limits(old < 0 ? 1 : -1);
556 return old != t->limits();
560 void MathCursor::macroModeClose()
562 MathUnknownInset * p = inMacroMode();
566 string s = p->name();
568 array().erase(pos());
574 string MathCursor::macroName() const
576 return inMacroMode() ? inMacroMode()->name() : string();
580 void MathCursor::selClear()
586 void MathCursor::selCopy()
590 theCutBuffer = grabSelection();
593 theCutBuffer = MathGridInset(1, 1);
598 void MathCursor::selCut()
601 theCutBuffer = grabAndEraseSelection();
605 void MathCursor::selDel()
615 void MathCursor::selPaste()
625 void MathCursor::selHandle(bool sel)
627 if (sel == selection_)
635 void MathCursor::selStart()
645 void MathCursor::selClearOrDel()
647 if (lyxrc.auto_region_delete)
654 void MathCursor::selGet(MathArray & ar)
658 ar = grabSelection().glue();
663 void MathCursor::drawSelection(MathPainterInfo & pain) const
670 getSelection(i1, i2);
672 if (i1.idx_ == i2.idx_) {
673 MathXArray & c = i1.xcell();
674 int x1 = c.xo() + c.pos2x(i1.pos_);
675 int y1 = c.yo() - c.ascent();
676 int x2 = c.xo() + c.pos2x(i2.pos_);
677 int y2 = c.yo() + c.descent();
678 pain.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, LColor::selection);
680 vector<MathInset::idx_type> indices
681 = i1.par_->idxBetween(i1.idx_, i2.idx_);
682 for (unsigned i = 0; i < indices.size(); ++i) {
683 MathXArray & c = i1.xcell(indices[i]);
685 int y1 = c.yo() - c.ascent();
686 int x2 = c.xo() + c.width();
687 int y2 = c.yo() + c.descent();
688 pain.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, LColor::selection);
693 // draw anchor if different from selection boundary
694 MathCursorPos anc = Anchor_.back();
695 if (anc != i1 && anc != i2) {
696 MathXArray & c = anc.xcell();
697 int x = c.xo() + c.pos2x(anc.pos_);
698 int y1 = c.yo() - c.ascent();
699 int y2 = c.yo() + c.descent();
700 pain.line(x, y1, x, y2, LColor::math);
706 void MathCursor::handleNest(MathAtom const & at)
708 at->cell(0) = grabAndEraseSelection().glue();
710 pushRight(prevAtom());
714 void MathCursor::getPos(int & x, int & y)
716 par()->getPos(idx(), pos(), x, y);
720 MathInset * MathCursor::par() const
722 return cursor().par_;
726 InsetFormulaBase * MathCursor::formula() const
732 MathCursor::idx_type MathCursor::idx() const
734 return cursor().idx_;
738 MathCursor::idx_type & MathCursor::idx()
740 return cursor().idx_;
744 MathCursor::pos_type MathCursor::pos() const
746 return cursor().pos_;
750 MathCursor::pos_type & MathCursor::pos()
752 return cursor().pos_;
756 MathUnknownInset * MathCursor::inMacroMode() const
760 MathUnknownInset * p = prevAtom()->asUnknownInset();
761 return (p && !p->final()) ? p : 0;
765 bool MathCursor::inMacroArgMode() const
767 return pos() > 0 && prevAtom()->getChar() == '#';
771 bool MathCursor::selection() const
777 MathGridInset * MathCursor::enclosingGrid(MathCursor::idx_type & idx) const
779 for (MathInset::difference_type i = depth() - 1; i >= 0; --i) {
780 MathGridInset * p = Cursor_[i].par_->asGridInset();
782 idx = Cursor_[i].idx_;
790 MathHullInset * MathCursor::enclosingHull(MathCursor::idx_type & idx) const
792 for (MathInset::difference_type i = depth() - 1; i >= 0; --i) {
793 MathHullInset * p = Cursor_[i].par_->asHullInset();
795 idx = Cursor_[i].idx_;
803 void MathCursor::popToEnclosingGrid()
805 while (depth() && !Cursor_.back().par_->asGridInset())
810 void MathCursor::popToEnclosingHull()
812 while (depth() && !Cursor_.back().par_->asHullInset())
817 void MathCursor::pullArg(bool goright)
820 MathArray a = array();
822 MathScriptInset const * p = par()->asScriptInset();
824 // special handling for scripts
825 const bool up = p->hasUp();
827 MathScriptInset * q = nextAtom()->asScriptInset();
831 array().insert(pos(), a);
837 array().insert(pos(), a);
841 formula()->mutateToText();
846 void MathCursor::touch()
848 cursor_type::const_iterator it = Cursor_.begin();
849 cursor_type::const_iterator et = Cursor_.end();
850 for ( ; it != et; ++it)
855 void MathCursor::normalize()
857 if (idx() >= par()->nargs()) {
858 lyxerr << "this should not really happen - 1: "
859 << idx() << " " << par()->nargs() << "\n";
862 idx() = min(idx(), par()->nargs() - 1);
864 if (pos() > size()) {
865 lyxerr << "this should not really happen - 2: "
866 << pos() << " " << size() << " in idx: " << idx()
868 WriteStream wi(lyxerr, false, true);
873 pos() = min(pos(), size());
875 // remove empty scripts if possible
877 for (pos_type i = 0; i < size(); ++i) {
878 MathScriptInset * p = array()[i]->asScriptInset();
880 p->removeEmptyScripts();
887 // fix again position
888 pos() = min(pos(), size());
892 MathCursor::size_type MathCursor::size() const
894 return array().size();
898 MathCursor::col_type MathCursor::hullCol() const
901 MathHullInset * p = enclosingHull(idx);
906 MathCursor::row_type MathCursor::hullRow() const
909 MathHullInset * p = enclosingHull(idx);
914 bool MathCursor::hasPrevAtom() const
920 bool MathCursor::hasNextAtom() const
922 return pos() < size();
926 MathAtom const & MathCursor::prevAtom() const
928 lyx::Assert(pos() > 0);
929 return array()[pos() - 1];
933 MathAtom & MathCursor::prevAtom()
935 lyx::Assert(pos() > 0);
936 return array()[pos() - 1];
940 MathAtom const & MathCursor::nextAtom() const
942 lyx::Assert(pos() < size());
943 return array()[pos()];
947 MathAtom & MathCursor::nextAtom()
949 lyx::Assert(pos() < size());
950 return array()[pos()];
954 MathArray & MathCursor::array() const
956 static MathArray dummy;
958 if (idx() >= par()->nargs()) {
959 lyxerr << "############ idx_ " << idx() << " not valid\n";
964 lyxerr << "############ depth() == 0 not valid\n";
968 return cursor().cell();
972 MathXArray & MathCursor::xarray() const
974 static MathXArray dummy;
977 lyxerr << "############ depth() == 0 not valid\n";
981 return cursor().xcell();
985 void MathCursor::idxNext()
987 par()->idxNext(idx(), pos());
991 void MathCursor::idxPrev()
993 par()->idxPrev(idx(), pos());
997 void MathCursor::splitCell()
999 if (idx() + 1 == par()->nargs())
1001 MathArray ar = array();
1003 array().erase(pos(), size());
1006 array().insert(0, ar);
1010 void MathCursor::breakLine()
1012 // leave inner cells
1017 MathHullInset * p = enclosingHull(dummy);
1021 if (p->getType() == "simple" || p->getType() == "equation") {
1022 p->mutate("eqnarray");
1026 p->addRow(hullRow());
1029 const row_type r = hullRow();
1030 for (col_type c = hullCol() + 1; c < p->ncols(); ++c)
1031 p->cell(p->index(r, c)).swap(p->cell(p->index(r + 1, c)));
1035 p->cell(idx()).swap(p->cell(idx() + p->ncols() - 1));
1040 //void MathCursor::readLine(MathArray & ar) const
1042 // idx_type base = row() * par()->ncols();
1043 // for (idx_type off = 0; off < par()->ncols(); ++off)
1044 // ar.push_back(par()->cell(base + off));
1048 char MathCursor::valign() const
1051 MathGridInset * p = enclosingGrid(idx);
1052 return p ? p->valign() : '\0';
1056 char MathCursor::halign() const
1059 MathGridInset * p = enclosingGrid(idx);
1060 return p ? p->halign(idx % p->ncols()) : '\0';
1064 void MathCursor::getSelection(MathCursorPos & i1, MathCursorPos & i2) const
1066 MathCursorPos anc = normalAnchor();
1067 if (anc < cursor()) {
1077 MathCursorPos & MathCursor::cursor()
1079 lyx::Assert(depth());
1080 return Cursor_.back();
1084 MathCursorPos const & MathCursor::cursor() const
1086 lyx::Assert(depth());
1087 return Cursor_.back();
1091 bool MathCursor::goUpDown(bool up)
1093 // Be warned: The 'logic' implemented in this function is highly fragile.
1094 // A distance of one pixel or a '<' vs '<=' _really_ matters.
1095 // So fiddle around with it only if you know what you are doing!
1096 int xlow, xhigh, ylow, yhigh;
1101 // check if we had something else in mind, if not, this is the future goal
1107 // try neigbouring script insets
1109 if (hasPrevAtom()) {
1110 MathScriptInset * p = prevAtom()->asScriptInset();
1111 if (p && p->has(up)) {
1114 idx() = up; // the superscript has index 1
1116 ///lyxerr << "updown: handled by scriptinset to the left\n";
1122 if (hasNextAtom()) {
1123 MathScriptInset * p = nextAtom()->asScriptInset();
1124 if (p && p->has(up)) {
1128 ///lyxerr << "updown: handled by scriptinset to the right\n";
1134 //xarray().boundingBox(xlow, xhigh, ylow, yhigh);
1139 //if (bruteFind(xo, yo, xlow, xhigh, ylow, yhigh)) {
1140 // lyxerr << "updown: handled by brute find in the same cell\n";
1144 // try to find an inset that knows better then we
1146 ///lyxerr << "updown: We are in " << *par() << " idx: " << idx() << '\n';
1148 if (par()->idxUpDown(idx(), up)) {
1149 // we found a cell that thinks it has something "below" us.
1150 ///lyxerr << "updown: found inset that handles UpDown\n";
1151 xarray().boundingBox(xlow, xhigh, ylow, yhigh);
1152 // project (xo,yo) onto proper box
1153 ///lyxerr << "\n xo: " << xo << " yo: " << yo
1154 /// << "\n xlow: " << xlow << " ylow: " << ylow
1155 /// << "\n xhigh: " << xhigh << " yhigh: " << yhigh;
1156 xo = min(max(xo, xlow), xhigh);
1157 yo = min(max(yo, ylow), yhigh);
1158 ///lyxerr << "\n xo2: " << xo << " yo2: " << yo << "\n";
1159 bruteFind(xo, yo, xlow, xhigh, ylow, yhigh);
1160 ///lyxerr << "updown: handled by final brute find\n";
1166 // no such inset found, just take something "above"
1167 ///lyxerr << "updown: handled by strange case\n";
1172 up ? formula()->ylow() : yo + 4,
1173 up ? yo - 4 : formula()->yhigh()
1177 // any improvement so far?
1180 if (up ? ynew < yo : ynew > yo)
1186 bool MathCursor::bruteFind
1187 (int x, int y, int xlow, int xhigh, int ylow, int yhigh)
1189 cursor_type best_cursor;
1190 double best_dist = 1e10;
1192 MathIterator it = ibegin(formula()->par().nucleus());
1193 MathIterator et = iend(formula()->par().nucleus());
1195 // avoid invalid nesting when selecting
1196 if (!selection_ || positionable(it.cursor(), Anchor_)) {
1197 MathCursorPos const & top = it.position();
1198 int xo = top.xpos();
1199 int yo = top.ypos();
1200 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
1201 double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
1202 // '<=' in order to take the last possible position
1203 // this is important for clicking behind \sum in e.g. '\sum_i a'
1204 if (d <= best_dist) {
1206 best_cursor = it.cursor();
1216 if (best_dist < 1e10)
1217 Cursor_ = best_cursor;
1218 return best_dist < 1e10;
1222 bool MathCursor::idxLineFirst()
1224 idx() -= idx() % par()->ncols();
1230 bool MathCursor::idxLineLast()
1232 idx() -= idx() % par()->ncols();
1233 idx() += par()->ncols() - 1;
1238 bool MathCursor::idxLeft()
1240 return par()->idxLeft(idx(), pos());
1244 bool MathCursor::idxRight()
1246 return par()->idxRight(idx(), pos());
1250 bool MathCursor::interpret(string const & s)
1252 //lyxerr << "interpret 1: '" << s << "'\n";
1256 //lyxerr << "char: '" << s[0] << "' int: " << int(s[0]) << endl;
1257 //owner_->getIntl()->getTransManager().TranslateAndInsert(s[0], lt);
1258 //lyxerr << "trans: '" << s[0] << "' int: " << int(s[0]) << endl;
1260 if (s.size() >= 5 && s.substr(0, 5) == "cases") {
1262 istringstream is(s.substr(5).c_str());
1265 niceInsert(MathAtom(new MathCasesInset(n)));
1269 if (s.size() >= 6 && s.substr(0, 6) == "matrix") {
1274 istringstream is(s.substr(6).c_str());
1275 is >> m >> n >> v_align >> h_align;
1279 niceInsert(MathAtom(new MathArrayInset("array", m, n, v_align[0], h_align)));
1283 if (s.size() >= 7 && s.substr(0, 7) == "replace") {
1285 istringstream is(s.substr(7).c_str());
1288 mathed_parse_cell(rep.from, from);
1289 mathed_parse_cell(rep.to, to);
1290 lyxerr << "replacing '" << from << "' with '" << to << "'\n";
1291 par()->replace(rep);
1295 string name = s.substr(1);
1297 if (name == "over" || name == "choose" || name == "atop") {
1298 MathArray ar = array();
1299 MathAtom t(createMathInset(name));
1300 t->asNestInset()->cell(0).swap(array());
1308 // prevent entering of recursive macros
1309 if (formula()->lyxCode() == Inset::MATHMACRO_CODE
1310 && formula()->getInsetName() == name)
1312 lyxerr << "can't enter recursive macro\n";
1316 niceInsert(createMathInset(name));
1321 bool MathCursor::script(bool up)
1323 // Hack to get \\^ and \\_ working
1324 if (inMacroMode() && macroName() == "\\") {
1326 interpret("\\mathcircumflex");
1333 MathGridInset safe = grabAndEraseSelection();
1334 if (hasPrevAtom() && prevAtom()->asScriptInset()) {
1335 prevAtom()->asScriptInset()->ensure(up);
1336 pushRight(prevAtom());
1339 } else if (hasNextAtom() && nextAtom()->asScriptInset()) {
1340 nextAtom()->asScriptInset()->ensure(up);
1341 pushLeft(nextAtom());
1345 plainInsert(MathAtom(new MathScriptInset(up)));
1346 prevAtom()->asScriptInset()->ensure(up);
1347 pushRight(prevAtom());
1357 bool MathCursor::interpret(char c)
1359 //lyxerr << "interpret 2: '" << c << "'\n";
1360 targetx_ = -1; // "no target"
1361 if (inMacroArgMode()) {
1365 MathMacroTemplate * p = formula()->par()->asMacroTemplate();
1366 if (p && 1 <= n && n <= p->numargs())
1367 insert(MathAtom(new MathMacroArgument(c - '0')));
1369 insert(createMathInset("#"));
1370 interpret(c); // try again
1376 if (inMacroMode()) {
1377 string name = macroName();
1378 //lyxerr << "interpret name: '" << name << "'\n";
1380 if (name.empty() && c == '\\') {
1382 interpret("\\backslash");
1387 inMacroMode()->name() += c;
1391 // handle 'special char' macros
1396 interpret("\\backslash");
1398 interpret(string("\\") + c);
1402 // leave macro mode and try again if necessary
1409 // This is annoying as one has to press <space> far too often.
1413 // leave autocorrect mode if necessary
1414 if (autocorrect_ && c == ' ') {
1415 autocorrect_ = false;
1420 // just clear selection on pressing the space bar
1421 if (selection_ && c == ' ') {
1429 //lyxerr << "starting with macro\n";
1430 insert(MathAtom(new MathUnknownInset("\\", false)));
1435 if (currentMode() == MathInset::TEXT_MODE) {
1436 // insert spaces in text mode,
1437 // but suppress direct insertion of two spaces in a row
1438 // the still allows typing '<space>a<space>' and deleting the 'a', but
1439 // it is better than nothing...
1440 if (!hasPrevAtom() || prevAtom()->getChar() != ' ')
1444 if (hasPrevAtom() && prevAtom()->asSpaceInset()) {
1445 prevAtom()->asSpaceInset()->incSpace();
1450 // if are at the very end, leave the formula
1451 return pos() != size();
1455 insert(c); // LM_TC_TEX;
1460 if (c == '{' || c == '}', c)) {
1461 insert(c); // LM_TC_TEX;
1467 niceInsert(MathAtom(new MathBraceInset));
1476 insert(createMathInset("$"));
1481 insert(createMathInset("%"));
1486 if (isalpha(c) && lastcode_ == LM_TC_GREEK) {
1487 insert(c, LM_TC_VAR);
1491 if (isalpha(c) && lastcode_ == LM_TC_GREEK1) {
1492 insert(c, LM_TC_VAR);
1493 lastcode_ = LM_TC_VAR;
1498 insert(c, LM_TC_TEX);
1499 //bv->owner()->message(_("TeX mode"));
1504 // try auto-correction
1505 //if (autocorrect_ && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1508 // no special circumstances, so insert the character without any fuss
1510 autocorrect_ = true;
1515 void MathCursor::setSelection(cursor_type const & where, size_type n)
1524 void MathCursor::insetToggle()
1526 if (hasNextAtom()) {
1527 // toggle next inset ...
1528 nextAtom()->lock(!nextAtom()->lock());
1529 } else if (popLeft() && hasNextAtom()) {
1530 // ... or enclosing inset if we are in the last inset position
1531 nextAtom()->lock(!nextAtom()->lock());
1537 string MathCursor::info() const
1540 os << "Math editor mode. ";
1541 for (int i = 0, n = depth(); i < n; ++i) {
1542 Cursor_[i].par_->infoize(os);
1546 if (prevAtom()->asSymbolInset() || prevAtom()->asScriptInset())
1547 prevAtom()->infoize(os);
1549 return os.str().c_str(); // .c_str() needed for lyxstring
1553 unsigned MathCursor::depth() const
1555 return Cursor_.size();
1563 void region(MathCursorPos const & i1, MathCursorPos const & i2,
1564 MathInset::row_type & r1, MathInset::row_type & r2,
1565 MathInset::col_type & c1, MathInset::col_type & c2)
1567 MathInset * p = i1.par_;
1568 c1 = p->col(i1.idx_);
1569 c2 = p->col(i2.idx_);
1572 r1 = p->row(i1.idx_);
1573 r2 = p->row(i2.idx_);
1581 MathGridInset MathCursor::grabSelection() const
1584 return MathGridInset();
1587 getSelection(i1, i2);
1588 // shouldn't we assert on i1.par_ == i2.par_?
1589 if (i1.idx_ == i2.idx_) {
1590 MathGridInset data(1, 1);
1591 data.cell(0) = MathArray(i1.cell(), i1.pos_, i2.pos_);
1596 region(i1, i2, r1, r2, c1, c2);
1597 MathGridInset data(c2 - c1 + 1, r2 - r1 + 1);
1598 for (row_type row = 0; row < data.nrows(); ++row)
1599 for (col_type col = 0; col < data.ncols(); ++col) {
1600 idx_type i = i1.par_->index(row + r1, col + c1);
1601 data.cell(data.index(row, col)) = i1.par_->cell(i);
1607 void MathCursor::eraseSelection()
1611 getSelection(i1, i2);
1612 if (i1.idx_ == i2.idx_)
1613 i1.cell().erase(i1.pos_, i2.pos_);
1615 MathInset * p = i1.par_;
1618 region(i1, i2, r1, r2, c1, c2);
1619 for (row_type row = r1; row <= r2; ++row)
1620 for (col_type col = c1; col <= c2; ++col)
1621 p->cell(p->index(row, col)).erase();
1627 MathGridInset MathCursor::grabAndEraseSelection()
1630 return MathGridInset();
1631 MathGridInset res = grabSelection();
1638 MathCursorPos MathCursor::normalAnchor() const
1640 if (Anchor_.size() < depth()) {
1642 lyxerr << "unusual Anchor size\n";
1644 //lyx::Assert(Anchor_.size() >= cursor.depth());
1645 // use Anchor on the same level as Cursor
1646 MathCursorPos normal = Anchor_[depth() - 1];
1647 if (depth() < Anchor_.size() && !(normal < cursor())) {
1648 // anchor is behind cursor -> move anchor behind the inset
1656 void MathCursor::handleExtern(const string & arg)
1660 istringstream iss(arg.c_str());
1661 iss >> lang >> extra;
1669 lyxerr << "use selection: " << ar << "\n";
1670 insert(pipeThroughExtern(lang, extra, ar));
1675 eq.push_back(MathAtom(new MathCharInset('=')));
1677 popToEnclosingHull();
1680 MathHullInset * hull = enclosingHull(idx);
1684 if (hull->getType() == "simple") {
1685 MathArray::size_type pos = cursor().cell().find_last(eq);
1687 if (pos == size()) {
1689 lyxerr << "use whole cell: " << ar << "\n";
1691 ar = MathArray(array(), pos + 1, size());
1692 lyxerr << "use partial cell form pos: " << pos << "\n";
1696 insert(pipeThroughExtern(lang, extra, ar));
1700 if (hull->getType() == "equation") {
1701 lyxerr << "use equation inset\n";
1702 hull->mutate("eqnarray");
1703 MathArray & ar = cursor().cell();
1704 lyxerr << "use cell: " << ar << "\n";
1706 cursor().cell() = eq;
1708 cursor().cell() = pipeThroughExtern(lang, extra, ar);
1714 lyxerr << "use eqnarray\n";
1716 MathArray ar = cursor().cell();
1717 lyxerr << "use cell: " << ar << "\n";
1720 cursor().cell() = eq;
1722 cursor().cell() = pipeThroughExtern(lang, extra, ar);
1729 int MathCursor::dispatch(string const & cmd)
1731 // try to dispatch to adajcent items if they are not editable
1732 // actually, this should only happen for mouse clicks...
1733 if (hasNextAtom() && !openable(nextAtom(), false))
1734 if (int res = nextAtom()->dispatch(cmd, 0, 0))
1736 if (hasPrevAtom() && !openable(prevAtom(), false))
1737 if (int res = prevAtom()->dispatch(cmd, 0, 0))
1740 for (int i = Cursor_.size() - 1; i >= 0; --i) {
1741 MathCursorPos & pos = Cursor_[i];
1742 if (int res = pos.par_->dispatch(cmd, pos.idx_, pos.pos_))
1749 MathInset::mode_type MathCursor::currentMode() const
1751 for (int i = Cursor_.size() - 1; i >= 0; --i) {
1752 MathInset::mode_type res = Cursor_[i].par_->currentMode();
1753 if (res != MathInset::UNDECIDED_MODE)
1756 return MathInset::UNDECIDED_MODE;
1760 void releaseMathCursor(BufferView * bv)
1764 mathcursor->formula()->hideInsetCursor(bv);