3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Alejandro Aguilar Sierra
7 * \author Alfredo Braunstein
10 * Full author contact details are available in file CREDITS.
16 #include "BufferView.h"
19 #include "dispatchresult.h"
20 #include "funcrequest.h"
21 #include "iterators.h"
23 #include "lyxfunc.h" // only for setMessage()
27 #include "paragraph.h"
29 #include "insets/updatableinset.h"
30 #include "insets/insettabular.h"
31 #include "insets/insettext.h"
33 #include "mathed/math_data.h"
34 #include "mathed/math_hullinset.h"
35 #include "mathed/math_support.h"
37 #include "support/limited_stack.h"
38 #include "frontends/LyXView.h"
40 #include <boost/assert.hpp>
45 #ifndef CXX_GLOBAL_CSTD
54 limited_stack<string> theCutBuffer;
57 LCursor::LCursor(BufferView & bv)
58 : cursor_(1), anchor_(1), bv_(&bv), current_(0),
59 cached_y_(0), x_target_(-1),
60 selection_(false), mark_(false)
68 cursor_.push_back(CursorSlice());
69 anchor_.push_back(CursorSlice());
78 DispatchResult LCursor::dispatch(FuncRequest const & cmd0)
80 lyxerr << "\nLCursor::dispatch: cmd: " << cmd0 << endl << *this << endl;
81 FuncRequest cmd = cmd0;
82 for (current_ = cursor_.size() - 1; current_ >= 1; --current_) {
83 DispatchResult res = inset()->dispatch(*this, cmd);
85 return DispatchResult(true, true);
87 // "Mutate" the request for semi-handled requests that need
88 // additional handling in outer levels.
91 cmd = FuncRequest(LFUN_FINISHED_LEFT);
94 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
97 cmd = FuncRequest(LFUN_FINISHED_UP);
100 cmd = FuncRequest(LFUN_FINISHED_DOWN);
103 //lyxerr << "not handled on level " << current_
104 // << " val: " << res.val() << endl;
108 BOOST_ASSERT(current_ == 0);
109 DispatchResult res = bv_->text()->dispatch(*this, cmd);
110 //lyxerr << " result: " << res.val() << endl;
115 void LCursor::push(InsetBase * inset)
117 lyxerr << "LCursor::push() inset: " << inset << endl;
118 cursor_.push_back(CursorSlice(inset));
119 anchor_.push_back(CursorSlice(inset));
125 void LCursor::pop(int depth)
127 while (int(cursor_.size()) > depth + 1)
129 lyxerr << "LCursor::pop() result: " << *this << endl;
135 BOOST_ASSERT(cursor_.size() >= 1);
138 current_ = cursor_.size() - 1;
142 void LCursor::pushLeft(InsetBase * p)
144 BOOST_ASSERT(!cursor_.empty());
145 //lyxerr << "Entering inset " << t << " left" << endl;
151 bool LCursor::popLeft()
153 BOOST_ASSERT(!cursor_.empty());
154 //lyxerr << "Leaving inset to the left" << endl;
157 inset()->notifyCursorLeaves(idx());
160 inset()->notifyCursorLeaves(idx());
166 bool LCursor::popRight()
168 BOOST_ASSERT(!cursor_.empty());
169 //lyxerr << "Leaving inset to the right" << endl;
172 inset()->notifyCursorLeaves(idx());
175 inset()->notifyCursorLeaves(idx());
182 CursorSlice & LCursor::current()
184 BOOST_ASSERT(!cursor_.empty());
185 //lyxerr << "accessing cursor slice " << current_
186 // << ": " << cursor_[current_] << endl;
187 return cursor_[current_];
191 CursorSlice const & LCursor::current() const
193 //lyxerr << "accessing cursor slice " << current_
194 // << ": " << cursor_[current_] << endl;
195 return cursor_[current_];
199 int LCursor::currentMode()
201 BOOST_ASSERT(!cursor_.empty());
202 for (int i = cursor_.size() - 1; i >= 1; --i) {
203 int res = cursor_[i].inset()->currentMode();
204 if (res != MathInset::UNDECIDED_MODE)
207 return MathInset::TEXT_MODE;
211 LyXText * LCursor::innerText() const
213 BOOST_ASSERT(!cursor_.empty());
214 if (cursor_.size() > 1) {
215 // go up until first non-0 text is hit
216 // (innermost text is 0 in mathed)
217 for (int i = cursor_.size() - 1; i >= 1; --i)
218 if (cursor_[i].text())
219 return cursor_[i].text();
225 CursorSlice const & LCursor::innerTextSlice() const
227 BOOST_ASSERT(!cursor_.empty());
228 if (cursor_.size() > 1) {
229 // go up until first non-0 text is hit
230 // (innermost text is 0 in mathed)
231 for (int i = cursor_.size() - 1; i >= 1; --i)
232 if (cursor_[i].text())
239 void LCursor::updatePos()
241 BOOST_ASSERT(!cursor_.empty());
242 if (cursor_.size() > 1)
243 cached_y_ = bv_->top_y() + cursor_.back().inset()->yo();
244 //cached_y_ = cursor_.back().inset()->yo();
248 void LCursor::getDim(int & asc, int & des) const
250 BOOST_ASSERT(!cursor_.empty());
252 BOOST_ASSERT(inset());
253 BOOST_ASSERT(inset()->asMathInset());
254 //inset()->asMathInset()->getCursorDim(asc, des);
258 Row const & row = *text()->cursorRow();
259 asc = row.baseline();
260 des = row.height() - asc;
265 void LCursor::getPos(int & x, int & y) const
267 BOOST_ASSERT(!cursor_.empty());
270 if (cursor_.size() == 1) {
271 x = bv_->text()->cursorX(cursor_.front());
272 y = bv_->text()->cursorY(cursor_.front());
275 lyxerr << "#### LCursor::getPos: " << *this << endl;
276 BOOST_ASSERT(inset());
278 inset()->getCursorPos(cursor_.back(), x, y);
279 // getCursorPos gives _screen_ coordinates. We need to add
280 // top_y to get document coordinates. This is hidden in cached_y_.
281 //y += cached_y_ - inset()->yo();
282 // The rest is non-obvious. The reason we have to have these
283 // extra computation is that the getCursorPos() calls rely
284 // on the inset's own knowledge of its screen position.
285 // If we scroll up or down in a big enough increment,
286 // inset->draw() is not called: this doesn't update
287 // inset.yo_, so getCursor() returns an old value.
290 //lyxerr << "#### LCursor::getPos: " << *this
291 // << " x: " << x << " y: " << y << endl;
295 void LCursor::paste(string const & data)
297 dispatch(FuncRequest(LFUN_PASTE, data));
301 InsetBase * LCursor::innerInsetOfType(int code) const
303 for (int i = cursor_.size() - 1; i >= 1; --i)
304 if (cursor_[i].inset_->lyxCode() == code)
305 return cursor_[i].inset_;
310 InsetTabular * LCursor::innerInsetTabular() const
312 return static_cast<InsetTabular *>(innerInsetOfType(InsetBase::TABULAR_CODE));
316 void LCursor::resetAnchor()
322 BufferView & LCursor::bv() const
328 MathAtom const & LCursor::prevAtom() const
330 BOOST_ASSERT(pos() > 0);
331 return cell()[pos() - 1];
335 MathAtom & LCursor::prevAtom()
337 BOOST_ASSERT(pos() > 0);
338 return cell()[pos() - 1];
342 MathAtom const & LCursor::nextAtom() const
344 BOOST_ASSERT(pos() < lastpos());
345 return cell()[pos()];
349 MathAtom & LCursor::nextAtom()
351 BOOST_ASSERT(pos() < lastpos());
352 return cell()[pos()];
356 bool LCursor::posLeft()
365 bool LCursor::posRight()
367 if (pos() == lastpos())
374 CursorSlice & LCursor::anchor()
376 return anchor_.back();
380 CursorSlice const & LCursor::anchor() const
382 return anchor_.back();
386 CursorSlice const & LCursor::selBegin() const
389 return cursor_.back();
390 // can't use std::min as this creates a new object
391 return anchor() < cursor_.back() ? anchor() : cursor_.back();
395 CursorSlice & LCursor::selBegin()
398 return cursor_.back();
399 return anchor() < cursor_.back() ? anchor() : cursor_.back();
403 CursorSlice const & LCursor::selEnd() const
406 return cursor_.back();
407 return anchor() > cursor_.back() ? anchor() : cursor_.back();
411 CursorSlice & LCursor::selEnd()
414 return cursor_.back();
415 return anchor() > cursor_.back() ? anchor() : cursor_.back();
419 void LCursor::setSelection()
422 // a selection with no contents is not a selection
423 if (par() == anchor().par() && pos() == anchor().pos())
428 void LCursor::setSelection(CursorBase const & where, size_t n)
437 void LCursor::clearSelection()
446 int & LCursor::x_target()
452 int LCursor::x_target() const
458 void LCursor::clearTargetX()
464 LyXText * LCursor::text() const
466 return current_ ? current().text() : bv_->text();
470 Paragraph & LCursor::paragraph()
472 BOOST_ASSERT(inTexted());
473 return current_ ? current().paragraph() : *bv_->text()->getPar(par());
477 Paragraph const & LCursor::paragraph() const
479 BOOST_ASSERT(inTexted());
480 return current_ ? current().paragraph() : *bv_->text()->getPar(par());
484 LCursor::par_type LCursor::lastpar() const
486 return inMathed() ? 0 : text()->paragraphs().size() - 1;
490 LCursor::pos_type LCursor::lastpos() const
492 InsetBase * inset = current().inset();
493 return inset && inset->asMathInset() ? cell().size() : paragraph().size();
497 LCursor::row_type LCursor::crow() const
499 return paragraph().row(pos());
503 LCursor::row_type LCursor::lastcrow() const
505 return paragraph().rows.size();
509 size_t LCursor::nargs() const
511 // assume 1x1 grid for 'plain text'
512 return current_ ? current().nargs() : 1;
516 size_t LCursor::ncols() const
518 // assume 1x1 grid for 'plain text'
519 return current_ ? current().ncols() : 1;
523 size_t LCursor::nrows() const
525 // assume 1x1 grid for 'plain text'
526 return current_ ? current().nrows() : 1;
530 LCursor::row_type LCursor::row() const
532 BOOST_ASSERT(current_ > 0);
533 return current().row();
537 LCursor::col_type LCursor::col() const
539 BOOST_ASSERT(current_ > 0);
540 return current().col();
544 MathArray const & LCursor::cell() const
546 BOOST_ASSERT(current_ > 0);
547 return current().cell();
551 MathArray & LCursor::cell()
553 BOOST_ASSERT(current_ > 0);
554 return current().cell();
558 void LCursor::info(std::ostream & os)
560 for (int i = 1, n = depth(); i < n; ++i) {
561 cursor_[i].inset()->infoize(os);
565 prevInset()->infoize2(os);
566 // overwite old message
573 void region(CursorSlice const & i1, CursorSlice const & i2,
574 LCursor::row_type & r1, LCursor::row_type & r2,
575 LCursor::col_type & c1, LCursor::col_type & c2)
577 InsetBase * p = i1.inset();
578 c1 = p->col(i1.idx_);
579 c2 = p->col(i2.idx_);
582 r1 = p->row(i1.idx_);
583 r2 = p->row(i2.idx_);
591 string LCursor::grabSelection()
596 CursorSlice i1 = selBegin();
597 CursorSlice i2 = selEnd();
599 if (i1.idx_ == i2.idx_) {
600 if (i1.inset()->asMathInset()) {
601 MathArray::const_iterator it = i1.cell().begin();
602 return asString(MathArray(it + i1.pos_, it + i2.pos_));
604 return "unknown selection 1";
610 region(i1, i2, r1, r2, c1, c2);
613 if (i1.inset()->asMathInset()) {
614 for (row_type row = r1; row <= r2; ++row) {
617 for (col_type col = c1; col <= c2; ++col) {
620 data += asString(i1.asMathInset()->cell(i1.asMathInset()->index(row, col)));
624 data = "unknown selection 2";
630 void LCursor::eraseSelection()
632 CursorSlice i1 = selBegin();
633 CursorSlice i2 = selEnd();
635 if (i1.inset()->asMathInset()) {
636 if (i1.idx_ == i2.idx_) {
637 i1.cell().erase(i1.pos_, i2.pos_);
639 MathInset * p = i1.asMathInset();
642 region(i1, i2, r1, r2, c1, c2);
643 for (row_type row = r1; row <= r2; ++row)
644 for (col_type col = c1; col <= c2; ++col)
645 p->cell(p->index(row, col)).clear();
649 lyxerr << "can't erase this selection 1" << endl;
654 string LCursor::grabAndEraseSelection()
658 string res = grabSelection();
665 void LCursor::selClear()
672 void LCursor::selCopy()
675 theCutBuffer.push(grabSelection());
678 //theCutBuffer.erase();
683 void LCursor::selCut()
685 theCutBuffer.push(grabAndEraseSelection());
689 void LCursor::selDel()
698 void LCursor::selPaste(size_t n)
701 if (n < theCutBuffer.size())
702 paste(theCutBuffer[n]);
708 void LCursor::selHandle(bool sel)
710 if (sel == selection())
717 void LCursor::selStart()
724 void LCursor::selClearOrDel()
726 if (lyxrc.auto_region_delete)
733 std::ostream & operator<<(std::ostream & os, LCursor const & cur)
735 for (size_t i = 0, n = cur.cursor_.size(); i != n; ++i)
736 os << " (" << cur.cursor_[i] << " | " << cur.anchor_[i] << "\n";
737 os << " current: " << cur.current_ << endl;
738 os << " selection: " << cur.selection_ << endl;
750 void increment(CursorBase & it)
752 CursorSlice & top = it.back();
753 MathArray & ar = top.asMathInset()->cell(top.idx_);
755 // move into the current inset if possible
756 // it is impossible for pos() == size()!
758 if (top.pos() != top.lastpos())
759 n = (ar.begin() + top.pos_)->nucleus();
760 if (n && n->isActive()) {
761 it.push_back(CursorSlice(n));
765 // otherwise move on one cell back if possible
766 if (top.pos() < top.lastpos()) {
767 // pos() == lastpos() is valid!
772 // otherwise try to move on one cell if possible
773 while (top.idx() < top.lastidx()) {
775 if (top.asMathInset()->validCell(top.idx_)) {
781 // otherwise leave array, move on one back
782 // this might yield pos() == size(), but that's a ok.
784 // it certainly invalidates top
789 CursorBase ibegin(InsetBase * p)
792 it.push_back(CursorSlice(p));
797 CursorBase iend(InsetBase * p)
800 it.push_back(CursorSlice(p));
801 CursorSlice & cur = it.back();
802 cur.idx() = cur.lastidx();
803 cur.pos() = cur.lastpos();
810 ///////////////////////////////////////////////////////////////////
812 // The part below is the non-integrated rest of the original math
813 // cursor. This should be either generalized for texted or moved
814 // back to the math insets.
816 ///////////////////////////////////////////////////////////////////
818 #include "mathed/math_braceinset.h"
819 #include "mathed/math_charinset.h"
820 #include "mathed/math_commentinset.h"
821 #include "mathed/math_factory.h"
822 #include "mathed/math_gridinset.h"
823 #include "mathed/math_macroarg.h"
824 #include "mathed/math_macrotemplate.h"
825 #include "mathed/math_mathmlstream.h"
826 #include "mathed/math_scriptinset.h"
827 #include "mathed/math_spaceinset.h"
828 #include "mathed/math_support.h"
829 #include "mathed/math_unknowninset.h"
831 //#define FILEDEBUG 1
834 bool LCursor::isInside(InsetBase const * p)
836 for (unsigned i = 0; i < depth(); ++i)
837 if (cursor_[i].inset() == p)
843 bool LCursor::openable(MathAtom const & t)
854 // we can't move into anything new during selection
855 if (depth() == anchor_.size())
857 if (!ptr_cmp(t.nucleus(), anchor_[depth()].inset()))
864 bool LCursor::inNucleus()
866 return inset()->asMathInset()->asScriptInset() && idx() == 2;
872 autocorrect() = false;
879 if (pos() != 0 && openable(prevAtom())) {
881 push(nextAtom().nucleus());
882 inset()->idxLast(*this);
886 return posLeft() || idxLeft() || popLeft() || selection();
890 bool LCursor::right()
892 autocorrect() = false;
899 if (pos() != lastpos() && openable(nextAtom())) {
900 pushLeft(nextAtom().nucleus());
901 inset()->idxFirst(*this);
905 return posRight() || idxRight() || popRight() || selection();
909 bool positionable(CursorBase const & cursor, CursorBase const & anchor)
911 // avoid deeper nested insets when selecting
912 if (cursor.size() > anchor.size())
915 // anchor might be deeper, should have same path then
916 for (size_t i = 0; i < cursor.size(); ++i)
917 if (cursor[i].inset() != anchor[i].inset())
920 // position should be ok.
925 void LCursor::setScreenPos(int x, int y)
927 bool res = bruteFind(x, y, formula()->xlow(), formula()->xhigh(),
928 formula()->ylow(), formula()->yhigh());
930 // this can happen on creation of "math-display"
941 autocorrect() = false;
943 if (!inset()->idxHome(*this))
952 autocorrect() = false;
954 if (!inset()->idxEnd(*this))
961 void LCursor::plainErase()
967 void LCursor::markInsert()
969 cell().insert(pos(), MathAtom(new MathCharInset(0)));
973 void LCursor::markErase()
979 void LCursor::plainInsert(MathAtom const & t)
981 cell().insert(pos(), t);
986 void LCursor::insert2(string const & str)
994 void LCursor::insert(string const & str)
996 lyxerr << "inserting '" << str << "'" << endl;
998 for (string::const_iterator it = str.begin(); it != str.end(); ++it)
999 plainInsert(MathAtom(new MathCharInset(*it)));
1003 void LCursor::insert(char c)
1005 lyxerr << "inserting '" << c << "'" << endl;
1007 plainInsert(MathAtom(new MathCharInset(c)));
1011 void LCursor::insert(MathAtom const & t)
1019 void LCursor::niceInsert(string const & t)
1021 lyxerr << "*** LCursor::niceInsert 1: " << t << endl;
1031 void LCursor::niceInsert(MathAtom const & t)
1033 lyxerr << "*** LCursor::niceInsert 2: " << t << endl;
1035 string safe = grabAndEraseSelection();
1037 // enter the new inset and move the contents of the selection if possible
1038 if (t->isActive()) {
1040 pushLeft(nextAtom().nucleus());
1043 lyxerr << "*** LCursor::niceInsert 3: " << t << endl;
1047 void LCursor::insert(MathArray const & ar)
1052 cell().insert(pos(), ar);
1057 bool LCursor::backspace()
1059 autocorrect() = false;
1067 if (inset()->nargs() == 1 && depth() == 1 && lastpos() == 0)
1073 if (inMacroMode()) {
1074 MathUnknownInset * p = activeMacro();
1075 if (p->name().size() > 1) {
1076 p->setName(p->name().substr(0, p->name().size() - 1));
1081 if (pos() != 0 && prevAtom()->nargs() > 0) {
1082 // let's require two backspaces for 'big stuff' and
1083 // highlight on the first
1094 bool LCursor::erase()
1096 autocorrect() = false;
1105 // delete empty cells if possible
1106 if (pos() == lastpos() && inset()->idxDelete(idx()))
1109 // special behaviour when in last position of cell
1110 if (pos() == lastpos()) {
1111 bool one_cell = inset()->nargs() == 1;
1112 if (one_cell && depth() == 1 && lastpos() == 0)
1118 inset()->idxGlue(idx());
1122 if (pos() != lastpos() && inset()->nargs() > 0) {
1136 CursorBase save = cursor_;
1140 autocorrect() = false;
1145 bool LCursor::down()
1148 CursorBase save = cursor_;
1149 if (goUpDown(false))
1152 autocorrect() = false;
1157 void LCursor::macroModeClose()
1161 MathUnknownInset * p = activeMacro();
1163 string s = p->name();
1165 cell().erase(pos());
1167 // do nothing if the macro name is empty
1171 string const name = s.substr(1);
1173 // prevent entering of recursive macros
1174 if (formula()->lyxCode() == InsetOld::MATHMACRO_CODE
1175 && formula()->getInsetName() == name)
1176 lyxerr << "can't enter recursive macro" << endl;
1178 niceInsert(createMathInset(name));
1182 string LCursor::macroName()
1184 return inMacroMode() ? activeMacro()->name() : string();
1188 void LCursor::handleNest(MathAtom const & a, int c)
1191 asArray(grabAndEraseSelection(), t.nucleus()->cell(c));
1194 pushLeft(t.nucleus());
1198 int LCursor::targetX() const
1200 if (x_target() != -1)
1209 MathHullInset * LCursor::formula() const
1211 for (int i = cursor_.size() - 1; i >= 1; --i) {
1212 MathInset * inset = cursor_[i].inset()->asMathInset();
1213 if (inset && inset->asHullInset())
1214 return static_cast<MathHullInset *>(inset);
1220 void LCursor::adjust(pos_type from, int diff)
1224 if (anchor().pos_ > from)
1225 anchor().pos_ += diff;
1226 // just to be on the safe side
1227 // theoretically unecessary
1232 bool LCursor::inMacroMode() const
1236 MathUnknownInset const * p = prevAtom()->asUnknownInset();
1237 return p && !p->final();
1241 MathUnknownInset * LCursor::activeMacro()
1243 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1247 bool LCursor::inMacroArgMode() const
1249 return pos() > 0 && prevAtom()->getChar() == '#';
1253 MathGridInset * LCursor::enclosingGrid(idx_type & idx) const
1255 for (MathInset::difference_type i = depth() - 1; i >= 0; --i) {
1256 MathInset * m = cursor_[i].inset()->asMathInset();
1259 MathGridInset * p = m->asGridInset();
1261 idx = cursor_[i].idx_;
1269 void LCursor::pullArg()
1273 MathArray ar = cell();
1276 cell().insert(pos(), ar);
1279 formula()->mutateToText();
1285 void LCursor::touch()
1289 CursorBase::const_iterator it = cursor_.begin();
1290 CursorBase::const_iterator et = cursor_.end();
1291 for ( ; it != et; ++it)
1297 void LCursor::normalize()
1299 if (idx() >= nargs()) {
1300 lyxerr << "this should not really happen - 1: "
1301 << idx() << ' ' << nargs()
1302 << " in: " << inset() << endl;
1304 idx() = min(idx(), lastidx());
1306 if (pos() > lastpos()) {
1307 lyxerr << "this should not really happen - 2: "
1308 << pos() << ' ' << lastpos() << " in idx: " << idx()
1310 WriteStream wi(lyxerr, false, true);
1311 inset()->asMathInset()->write(wi);
1314 pos() = min(pos(), lastpos());
1318 char LCursor::valign()
1321 MathGridInset * p = enclosingGrid(idx);
1322 return p ? p->valign() : '\0';
1326 char LCursor::halign()
1329 MathGridInset * p = enclosingGrid(idx);
1330 return p ? p->halign(idx % p->ncols()) : '\0';
1334 bool LCursor::goUpDown(bool up)
1336 // Be warned: The 'logic' implemented in this function is highly fragile.
1337 // A distance of one pixel or a '<' vs '<=' _really_ matters.
1338 // So fiddle around with it only if you know what you are doing!
1343 // check if we had something else in mind, if not, this is the future goal
1344 if (x_target() == -1)
1349 // try neigbouring script insets
1353 MathScriptInset const * p = prevAtom()->asScriptInset();
1354 if (p && p->has(up)) {
1357 idx() = up; // the superscript has index 1
1359 //lyxerr << "updown: handled by scriptinset to the left" << endl;
1365 if (pos() != lastpos()) {
1366 MathScriptInset const * p = nextAtom()->asScriptInset();
1367 if (p && p->has(up)) {
1371 //lyxerr << "updown: handled by scriptinset to the right" << endl;
1377 // try current cell for e.g. text insets
1378 if (inset()->idxUpDown2(*this, up))
1381 //xarray().boundingBox(xlow, xhigh, ylow, yhigh);
1386 //if (bruteFind(xo, yo, xlow, xhigh, ylow, yhigh)) {
1387 // lyxerr << "updown: handled by brute find in the same cell" << endl;
1391 // try to find an inset that knows better then we
1393 //lyxerr << "updown: We are in " << inset() << " idx: " << idx() << endl;
1395 if (inset()->idxUpDown(*this, up)) {
1396 // try to find best position within this inset
1402 // no such inset found, just take something "above"
1403 //lyxerr << "updown: handled by strange case" << endl;
1409 up ? formula()->ylow() : yo + 4,
1410 up ? yo - 4 : formula()->yhigh()
1414 // any improvement so far?
1417 if (up ? ynew < yo : ynew > yo)
1423 bool LCursor::bruteFind(int x, int y, int xlow, int xhigh, int ylow, int yhigh)
1425 CursorBase best_cursor;
1426 double best_dist = 1e10;
1428 CursorBase it = ibegin(formula());
1429 CursorBase et = iend(formula());
1431 // avoid invalid nesting when selecting
1432 if (!selection() || positionable(it, anchor_)) {
1434 CursorSlice & cur = it.back();
1435 cur.inset()->getCursorPos(cur, xo, yo);
1436 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
1437 double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
1438 //lyxerr << "x: " << x << " y: " << y << " d: " << endl;
1439 // '<=' in order to take the last possible position
1440 // this is important for clicking behind \sum in e.g. '\sum_i a'
1441 if (d <= best_dist) {
1453 if (best_dist < 1e10)
1454 cursor_ = best_cursor;
1455 return best_dist < 1e10;
1459 void LCursor::bruteFind2(int x, int y)
1461 double best_dist = 1e10;
1463 CursorBase it = cursor_;
1465 CursorBase et = cursor_;
1466 int n = et.back().asMathInset()->cell(et.back().idx_).size();
1468 for (int i = 0; ; ++i) {
1470 CursorSlice & cur = it.back();
1471 cur.inset()->getCursorPos(cur, xo, yo);
1472 double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
1473 // '<=' in order to take the last possible position
1474 // this is important for clicking behind \sum in e.g. '\sum_i a'
1475 lyxerr << "i: " << i << " d: " << d << " best: " << best_dist << endl;
1476 if (d <= best_dist) {
1487 bool LCursor::idxLineLast()
1489 idx() -= idx() % ncols();
1490 idx() += ncols() - 1;
1496 bool LCursor::idxLeft()
1498 return inset()->idxLeft(*this);
1502 bool LCursor::idxRight()
1504 return inset()->idxRight(*this);
1508 bool LCursor::script(bool up)
1510 // Hack to get \\^ and \\_ working
1511 lyxerr << "handling script: up: " << up << endl;
1512 if (inMacroMode() && macroName() == "\\") {
1514 niceInsert(createMathInset("mathcircumflex"));
1521 string safe = grabAndEraseSelection();
1523 // we are in a nucleus of a script inset, move to _our_ script
1524 inset()->asMathInset()->asScriptInset()->ensure(up);
1527 } else if (pos() != 0 && prevAtom()->asScriptInset()) {
1529 nextAtom().nucleus()->asScriptInset()->ensure(up);
1533 } else if (pos() != 0) {
1535 cell()[pos()] = MathAtom(new MathScriptInset(nextAtom(), up));
1540 plainInsert(MathAtom(new MathScriptInset(up)));
1542 nextAtom().nucleus()->asScriptInset()->ensure(up);
1552 bool LCursor::interpret(char c)
1554 //lyxerr << "interpret 2: '" << c << "'" << endl;
1556 if (inMacroArgMode()) {
1562 MathMacroTemplate const * p = formula()->asMacroTemplate();
1563 if (p && 1 <= n && n <= p->numargs())
1564 insert(MathAtom(new MathMacroArgument(c - '0')));
1566 insert(createMathInset("#"));
1567 interpret(c); // try again
1574 if (inMacroMode()) {
1575 string name = macroName();
1576 //lyxerr << "interpret name: '" << name << "'" << endl;
1579 activeMacro()->setName(activeMacro()->name() + c);
1583 // handle 'special char' macros
1588 if (currentMode() == MathInset::TEXT_MODE)
1589 niceInsert(createMathInset("textbackslash"));
1591 niceInsert(createMathInset("backslash"));
1592 } else if (c == '{') {
1593 niceInsert(MathAtom(new MathBraceInset));
1595 niceInsert(createMathInset(string(1, c)));
1600 // leave macro mode and try again if necessary
1603 niceInsert(MathAtom(new MathBraceInset));
1609 // This is annoying as one has to press <space> far too often.
1613 // leave autocorrect mode if necessary
1614 if (autocorrect() && c == ' ') {
1615 autocorrect() = false;
1620 // just clear selection on pressing the space bar
1621 if (selection() && c == ' ') {
1622 selection() = false;
1629 //lyxerr << "starting with macro" << endl;
1630 insert(MathAtom(new MathUnknownInset("\\", false)));
1635 if (currentMode() == MathInset::TEXT_MODE)
1641 if (currentMode() == MathInset::TEXT_MODE) {
1642 // insert spaces in text mode,
1643 // but suppress direct insertion of two spaces in a row
1644 // the still allows typing '<space>a<space>' and deleting the 'a', but
1645 // it is better than nothing...
1646 if (!pos() != 0 || prevAtom()->getChar() != ' ')
1650 if (pos() != 0 && prevAtom()->asSpaceInset()) {
1651 prevAtom().nucleus()->asSpaceInset()->incSpace();
1656 // if are at the very end, leave the formula
1657 return pos() != lastpos();
1670 if (c == '{' || c == '}' || c == '#' || c == '&' || c == '$') {
1671 niceInsert(createMathInset(string(1, c)));
1676 niceInsert(MathAtom(new MathCommentInset));
1680 // try auto-correction
1681 //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1684 // no special circumstances, so insert the character without any fuss
1686 autocorrect() = true;
1691 void LCursor::lockToggle()
1693 if (pos() != lastpos()) {
1694 // toggle previous inset ...
1695 nextAtom().nucleus()->lock(!nextAtom()->lock());
1696 } else if (popLeft() && pos() != lastpos()) {
1697 // ... or enclosing inset if we are in the last inset position
1698 nextAtom().nucleus()->lock(!nextAtom()->lock());
1704 CursorSlice LCursor::normalAnchor()
1706 if (anchor_.size() < depth()) {
1708 lyxerr << "unusual Anchor size" << endl;
1710 //lyx::BOOST_ASSERT(Anchor_.size() >= cursor.depth());
1711 // use Anchor on the same level as Cursor
1712 CursorSlice normal = anchor_[current_];
1714 if (depth() < anchor_.size() && !(normal < xx())) {
1715 // anchor is behind cursor -> move anchor behind the inset
1724 DispatchResult dispatch(LCursor & cur, FuncRequest const & cmd)
1726 // mouse clicks are somewhat special
1728 switch (cmd.action) {
1729 case LFUN_MOUSE_PRESS:
1730 case LFUN_MOUSE_MOTION:
1731 case LFUN_MOUSE_RELEASE:
1732 case LFUN_MOUSE_DOUBLE: {
1733 CursorSlice & pos = cursor_.back();
1737 if (x < cmd.x && pos() != 0) {
1738 DispatchResult const res = prevAtom().nucleus()->dispatch(cmd);
1739 if (res.dispatched())
1742 if (x > cmd.x && pos() != lastpos()) {
1743 DispatchResult const res = inset()->dispatch(cmd);
1744 if (res.dispatched())
1755 void LCursor::handleFont(string const & font)
1760 safe = grabAndEraseSelection();
1763 if (lastpos() != 0) {
1764 // something left in the cell
1766 // cursor in first position
1768 } else if (pos() == lastpos()) {
1769 // cursor in last position
1772 // cursor in between. split cell
1773 MathArray::iterator bt = cell().begin();
1774 MathAtom at = createMathInset(font);
1775 at.nucleus()->cell(0) = MathArray(bt, bt + pos());
1776 cell().erase(bt, bt + pos());
1781 // nothing left in the cell
1789 void LCursor::releaseMathCursor()
1792 formula()->insetUnlock(bv());
1796 bool LCursor::inMathed() const
1802 bool LCursor::inTexted() const
1808 InsetBase * LCursor::nextInset()
1810 if (pos() == lastpos())
1813 return nextAtom().nucleus();
1814 Paragraph & par = paragraph();
1815 return par.isInset(pos()) ? par.getInset(pos()) : 0;
1819 InsetBase * LCursor::prevInset()
1824 return prevAtom().nucleus();
1825 Paragraph & par = paragraph();
1826 return par.isInset(pos() - 1) ? par.getInset(pos() - 1) : 0;
1830 void LCursor::message(string const & msg) const
1832 bv().owner()->getLyXFunc().setMessage(msg);
1836 void LCursor::errorMessage(string const & msg) const
1838 bv().owner()->getLyXFunc().setErrorMessage(msg);