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 return anchor() < cursor_.back() ? anchor() : cursor_.back();
394 CursorSlice & LCursor::selBegin()
397 return cursor_.back();
398 // can't use std::min as this returns a const ref
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 // can't use std::min as this returns a const ref
416 return anchor() > cursor_.back() ? anchor() : cursor_.back();
420 void LCursor::setSelection()
423 // a selection with no contents is not a selection
424 if (par() == anchor().par() && pos() == anchor().pos())
429 void LCursor::setSelection(CursorBase const & where, size_t n)
438 void LCursor::clearSelection()
447 int & LCursor::x_target()
453 int LCursor::x_target() const
459 void LCursor::clearTargetX()
465 LyXText * LCursor::text() const
467 return current_ ? current().text() : bv_->text();
471 Paragraph & LCursor::paragraph()
473 BOOST_ASSERT(inTexted());
474 return current_ ? current().paragraph() : *bv_->text()->getPar(par());
478 Paragraph const & LCursor::paragraph() const
480 BOOST_ASSERT(inTexted());
481 return current_ ? current().paragraph() : *bv_->text()->getPar(par());
485 LCursor::par_type LCursor::lastpar() const
487 return inMathed() ? 0 : text()->paragraphs().size() - 1;
491 LCursor::pos_type LCursor::lastpos() const
493 InsetBase * inset = current().inset();
494 return inset && inset->asMathInset() ? cell().size() : paragraph().size();
498 LCursor::row_type LCursor::crow() const
500 return paragraph().row(pos());
504 LCursor::row_type LCursor::lastcrow() const
506 return paragraph().rows.size();
510 size_t LCursor::nargs() const
512 // assume 1x1 grid for 'plain text'
513 return current_ ? current().nargs() : 1;
517 size_t LCursor::ncols() const
519 // assume 1x1 grid for 'plain text'
520 return current_ ? current().ncols() : 1;
524 size_t LCursor::nrows() const
526 // assume 1x1 grid for 'plain text'
527 return current_ ? current().nrows() : 1;
531 LCursor::row_type LCursor::row() const
533 BOOST_ASSERT(current_ > 0);
534 return current().row();
538 LCursor::col_type LCursor::col() const
540 BOOST_ASSERT(current_ > 0);
541 return current().col();
545 MathArray const & LCursor::cell() const
547 BOOST_ASSERT(current_ > 0);
548 return current().cell();
552 MathArray & LCursor::cell()
554 BOOST_ASSERT(current_ > 0);
555 return current().cell();
559 void LCursor::info(std::ostream & os)
561 for (int i = 1, n = depth(); i < n; ++i) {
562 cursor_[i].inset()->infoize(os);
566 prevInset()->infoize2(os);
567 // overwite old message
574 void region(CursorSlice const & i1, CursorSlice const & i2,
575 LCursor::row_type & r1, LCursor::row_type & r2,
576 LCursor::col_type & c1, LCursor::col_type & c2)
578 InsetBase * p = i1.inset();
579 c1 = p->col(i1.idx_);
580 c2 = p->col(i2.idx_);
583 r1 = p->row(i1.idx_);
584 r2 = p->row(i2.idx_);
592 string LCursor::grabSelection()
597 CursorSlice i1 = selBegin();
598 CursorSlice i2 = selEnd();
600 if (i1.idx_ == i2.idx_) {
601 if (i1.inset()->asMathInset()) {
602 MathArray::const_iterator it = i1.cell().begin();
603 return asString(MathArray(it + i1.pos_, it + i2.pos_));
605 return "unknown selection 1";
611 region(i1, i2, r1, r2, c1, c2);
614 if (i1.inset()->asMathInset()) {
615 for (row_type row = r1; row <= r2; ++row) {
618 for (col_type col = c1; col <= c2; ++col) {
621 data += asString(i1.asMathInset()->cell(i1.asMathInset()->index(row, col)));
625 data = "unknown selection 2";
631 void LCursor::eraseSelection()
633 //lyxerr << "LCursor::eraseSelection" << endl;
634 CursorSlice const & i1 = selBegin();
635 CursorSlice const & i2 = selEnd();
637 if (i1.inset()->asMathInset()) {
638 if (i1.idx_ == i2.idx_) {
639 i1.cell().erase(i1.pos_, i2.pos_);
641 MathInset * p = i1.asMathInset();
644 region(i1, i2, r1, r2, c1, c2);
645 for (row_type row = r1; row <= r2; ++row)
646 for (col_type col = c1; col <= c2; ++col)
647 p->cell(p->index(row, col)).clear();
651 lyxerr << "can't erase this selection 1" << endl;
653 //lyxerr << "LCursor::eraseSelection end" << endl;
657 string LCursor::grabAndEraseSelection()
661 string res = grabSelection();
668 void LCursor::selClear()
675 void LCursor::selCopy()
678 theCutBuffer.push(grabSelection());
681 //theCutBuffer.erase();
686 void LCursor::selCut()
688 theCutBuffer.push(grabAndEraseSelection());
692 void LCursor::selDel()
694 //lyxerr << "LCursor::selDel" << endl;
702 void LCursor::selPaste(size_t n)
705 if (n < theCutBuffer.size())
706 paste(theCutBuffer[n]);
712 void LCursor::selHandle(bool sel)
714 //lyxerr << "LCursor::selHandle" << endl;
715 if (sel == selection())
722 void LCursor::selClearOrDel()
724 //lyxerr << "LCursor::selClearOrDel" << endl;
725 if (lyxrc.auto_region_delete)
732 std::ostream & operator<<(std::ostream & os, LCursor const & cur)
734 for (size_t i = 0, n = cur.cursor_.size(); i != n; ++i)
735 os << " " << cur.cursor_[i] << " | " << cur.anchor_[i] << "\n";
736 os << " current: " << cur.current_ << endl;
737 os << " selection: " << cur.selection_ << endl;
749 void increment(CursorBase & it)
751 CursorSlice & top = it.back();
752 MathArray & ar = top.asMathInset()->cell(top.idx_);
754 // move into the current inset if possible
755 // it is impossible for pos() == size()!
757 if (top.pos() != top.lastpos())
758 n = (ar.begin() + top.pos_)->nucleus();
759 if (n && n->isActive()) {
760 it.push_back(CursorSlice(n));
764 // otherwise move on one cell back if possible
765 if (top.pos() < top.lastpos()) {
766 // pos() == lastpos() is valid!
771 // otherwise try to move on one cell if possible
772 while (top.idx() < top.lastidx()) {
774 if (top.asMathInset()->validCell(top.idx_)) {
780 // otherwise leave array, move on one back
781 // this might yield pos() == size(), but that's a ok.
783 // it certainly invalidates top
788 CursorBase ibegin(InsetBase * p)
791 it.push_back(CursorSlice(p));
796 CursorBase iend(InsetBase * p)
799 it.push_back(CursorSlice(p));
800 CursorSlice & cur = it.back();
801 cur.idx() = cur.lastidx();
802 cur.pos() = cur.lastpos();
809 ///////////////////////////////////////////////////////////////////
811 // The part below is the non-integrated rest of the original math
812 // cursor. This should be either generalized for texted or moved
813 // back to the math insets.
815 ///////////////////////////////////////////////////////////////////
817 #include "mathed/math_braceinset.h"
818 #include "mathed/math_charinset.h"
819 #include "mathed/math_commentinset.h"
820 #include "mathed/math_factory.h"
821 #include "mathed/math_gridinset.h"
822 #include "mathed/math_macroarg.h"
823 #include "mathed/math_macrotemplate.h"
824 #include "mathed/math_mathmlstream.h"
825 #include "mathed/math_scriptinset.h"
826 #include "mathed/math_spaceinset.h"
827 #include "mathed/math_support.h"
828 #include "mathed/math_unknowninset.h"
830 //#define FILEDEBUG 1
833 bool LCursor::isInside(InsetBase const * p)
835 for (unsigned i = 0; i < depth(); ++i)
836 if (cursor_[i].inset() == p)
842 bool LCursor::openable(MathAtom const & t)
853 // we can't move into anything new during selection
854 if (depth() == anchor_.size())
856 if (!ptr_cmp(t.nucleus(), anchor_[depth()].inset()))
863 bool LCursor::inNucleus()
865 return inset()->asMathInset()->asScriptInset() && idx() == 2;
871 autocorrect() = false;
878 if (pos() != 0 && openable(prevAtom())) {
880 push(nextAtom().nucleus());
881 inset()->idxLast(*this);
885 return posLeft() || idxLeft() || popLeft() || selection();
889 bool LCursor::right()
891 autocorrect() = false;
898 if (pos() != lastpos() && openable(nextAtom())) {
899 pushLeft(nextAtom().nucleus());
900 inset()->idxFirst(*this);
904 return posRight() || idxRight() || popRight() || selection();
908 bool positionable(CursorBase const & cursor, CursorBase const & anchor)
910 // avoid deeper nested insets when selecting
911 if (cursor.size() > anchor.size())
914 // anchor might be deeper, should have same path then
915 for (size_t i = 0; i < cursor.size(); ++i)
916 if (cursor[i].inset() != anchor[i].inset())
919 // position should be ok.
924 void LCursor::setScreenPos(int x, int y)
926 bool res = bruteFind(x, y, formula()->xlow(), formula()->xhigh(),
927 formula()->ylow(), formula()->yhigh());
929 // this can happen on creation of "math-display"
940 autocorrect() = false;
942 if (!inset()->idxHome(*this))
951 autocorrect() = false;
953 if (!inset()->idxEnd(*this))
960 void LCursor::plainErase()
966 void LCursor::markInsert()
968 cell().insert(pos(), MathAtom(new MathCharInset(0)));
972 void LCursor::markErase()
978 void LCursor::plainInsert(MathAtom const & t)
980 cell().insert(pos(), t);
985 void LCursor::insert(string const & str)
987 lyxerr << "LCursor::insert str '" << str << "'" << endl;
990 for (string::const_iterator it = str.begin(); it != str.end(); ++it)
991 plainInsert(MathAtom(new MathCharInset(*it)));
1000 void LCursor::insert(char c)
1002 //lyxerr << "LCursor::insert char '" << c << "'" << endl;
1004 plainInsert(MathAtom(new MathCharInset(c)));
1008 void LCursor::insert(MathAtom const & t)
1010 //lyxerr << "LCursor::insert MathAtom: " << endl;
1017 void LCursor::insert(InsetBase * inset)
1020 insert(MathAtom(inset));
1022 text()->insertInset(inset);
1026 void LCursor::niceInsert(string const & t)
1037 void LCursor::niceInsert(MathAtom const & t)
1040 string safe = grabAndEraseSelection();
1042 // enter the new inset and move the contents of the selection if possible
1043 if (t->isActive()) {
1045 // be careful here: don't use 'pushLeft(t)' as this we need to
1046 // push the clone, not the original
1047 pushLeft(nextAtom().nucleus());
1053 void LCursor::insert(MathArray const & ar)
1058 cell().insert(pos(), ar);
1063 bool LCursor::backspace()
1065 autocorrect() = false;
1073 if (inset()->nargs() == 1 && depth() == 1 && lastpos() == 0)
1079 if (inMacroMode()) {
1080 MathUnknownInset * p = activeMacro();
1081 if (p->name().size() > 1) {
1082 p->setName(p->name().substr(0, p->name().size() - 1));
1087 if (pos() != 0 && prevAtom()->nargs() > 0) {
1088 // let's require two backspaces for 'big stuff' and
1089 // highlight on the first
1100 bool LCursor::erase()
1102 autocorrect() = false;
1111 // delete empty cells if possible
1112 if (pos() == lastpos() && inset()->idxDelete(idx()))
1115 // special behaviour when in last position of cell
1116 if (pos() == lastpos()) {
1117 bool one_cell = inset()->nargs() == 1;
1118 if (one_cell && depth() == 1 && lastpos() == 0)
1124 inset()->idxGlue(idx());
1128 if (pos() != lastpos() && inset()->nargs() > 0) {
1142 CursorBase save = cursor_;
1146 autocorrect() = false;
1151 bool LCursor::down()
1154 CursorBase save = cursor_;
1155 if (goUpDown(false))
1158 autocorrect() = false;
1163 void LCursor::macroModeClose()
1167 MathUnknownInset * p = activeMacro();
1169 string s = p->name();
1171 cell().erase(pos());
1173 // do nothing if the macro name is empty
1177 string const name = s.substr(1);
1179 // prevent entering of recursive macros
1180 if (formula()->lyxCode() == InsetOld::MATHMACRO_CODE
1181 && formula()->getInsetName() == name)
1182 lyxerr << "can't enter recursive macro" << endl;
1184 niceInsert(createMathInset(name));
1188 string LCursor::macroName()
1190 return inMacroMode() ? activeMacro()->name() : string();
1194 void LCursor::handleNest(MathAtom const & a, int c)
1196 //lyxerr << "LCursor::handleNest: " << c << endl;
1198 asArray(grabAndEraseSelection(), t.nucleus()->cell(c));
1201 pushLeft(nextAtom().nucleus());
1205 int LCursor::targetX() const
1207 if (x_target() != -1)
1216 MathHullInset * LCursor::formula() const
1218 for (int i = cursor_.size() - 1; i >= 1; --i) {
1219 MathInset * inset = cursor_[i].inset()->asMathInset();
1220 if (inset && inset->asHullInset())
1221 return static_cast<MathHullInset *>(inset);
1227 void LCursor::adjust(pos_type from, int diff)
1231 if (anchor().pos_ > from)
1232 anchor().pos_ += diff;
1233 // just to be on the safe side
1234 // theoretically unecessary
1239 bool LCursor::inMacroMode() const
1243 MathUnknownInset const * p = prevAtom()->asUnknownInset();
1244 return p && !p->final();
1248 MathUnknownInset * LCursor::activeMacro()
1250 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1254 bool LCursor::inMacroArgMode() const
1256 return pos() > 0 && prevAtom()->getChar() == '#';
1260 MathGridInset * LCursor::enclosingGrid(idx_type & idx) const
1262 for (MathInset::difference_type i = depth() - 1; i >= 0; --i) {
1263 MathInset * m = cursor_[i].inset()->asMathInset();
1266 MathGridInset * p = m->asGridInset();
1268 idx = cursor_[i].idx_;
1276 void LCursor::pullArg()
1279 MathArray ar = cell();
1280 if (popLeft() && inMathed()) {
1282 cell().insert(pos(), ar);
1285 //formula()->mutateToText();
1290 void LCursor::touch()
1294 CursorBase::const_iterator it = cursor_.begin();
1295 CursorBase::const_iterator et = cursor_.end();
1296 for ( ; it != et; ++it)
1302 void LCursor::normalize()
1304 if (idx() >= nargs()) {
1305 lyxerr << "this should not really happen - 1: "
1306 << idx() << ' ' << nargs()
1307 << " in: " << inset() << endl;
1309 idx() = min(idx(), lastidx());
1311 if (pos() > lastpos()) {
1312 lyxerr << "this should not really happen - 2: "
1313 << pos() << ' ' << lastpos() << " in idx: " << idx()
1315 WriteStream wi(lyxerr, false, true);
1316 inset()->asMathInset()->write(wi);
1319 pos() = min(pos(), lastpos());
1323 char LCursor::valign()
1326 MathGridInset * p = enclosingGrid(idx);
1327 return p ? p->valign() : '\0';
1331 char LCursor::halign()
1334 MathGridInset * p = enclosingGrid(idx);
1335 return p ? p->halign(idx % p->ncols()) : '\0';
1339 bool LCursor::goUpDown(bool up)
1341 // Be warned: The 'logic' implemented in this function is highly fragile.
1342 // A distance of one pixel or a '<' vs '<=' _really_ matters.
1343 // So fiddle around with it only if you know what you are doing!
1348 // check if we had something else in mind, if not, this is the future goal
1349 if (x_target() == -1)
1354 // try neigbouring script insets
1358 MathScriptInset const * p = prevAtom()->asScriptInset();
1359 if (p && p->has(up)) {
1362 idx() = up; // the superscript has index 1
1364 //lyxerr << "updown: handled by scriptinset to the left" << endl;
1370 if (pos() != lastpos()) {
1371 MathScriptInset const * p = nextAtom()->asScriptInset();
1372 if (p && p->has(up)) {
1376 //lyxerr << "updown: handled by scriptinset to the right" << endl;
1382 // try current cell for e.g. text insets
1383 if (inset()->idxUpDown2(*this, up))
1386 //xarray().boundingBox(xlow, xhigh, ylow, yhigh);
1391 //if (bruteFind(xo, yo, xlow, xhigh, ylow, yhigh)) {
1392 // lyxerr << "updown: handled by brute find in the same cell" << endl;
1396 // try to find an inset that knows better then we
1398 //lyxerr << "updown: We are in " << inset() << " idx: " << idx() << endl;
1400 if (inset()->idxUpDown(*this, up)) {
1401 // try to find best position within this inset
1407 // no such inset found, just take something "above"
1408 //lyxerr << "updown: handled by strange case" << endl;
1414 up ? formula()->ylow() : yo + 4,
1415 up ? yo - 4 : formula()->yhigh()
1419 // any improvement so far?
1422 if (up ? ynew < yo : ynew > yo)
1428 bool LCursor::bruteFind(int x, int y, int xlow, int xhigh, int ylow, int yhigh)
1430 CursorBase best_cursor;
1431 double best_dist = 1e10;
1433 CursorBase it = ibegin(formula());
1434 CursorBase et = iend(formula());
1436 // avoid invalid nesting when selecting
1437 if (!selection() || positionable(it, anchor_)) {
1439 CursorSlice & cur = it.back();
1440 cur.inset()->getCursorPos(cur, xo, yo);
1441 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
1442 double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
1443 //lyxerr << "x: " << x << " y: " << y << " d: " << endl;
1444 // '<=' in order to take the last possible position
1445 // this is important for clicking behind \sum in e.g. '\sum_i a'
1446 if (d <= best_dist) {
1458 if (best_dist < 1e10)
1459 cursor_ = best_cursor;
1460 return best_dist < 1e10;
1464 void LCursor::bruteFind2(int x, int y)
1466 double best_dist = 1e10;
1468 CursorBase it = cursor_;
1470 CursorBase et = cursor_;
1471 int n = et.back().asMathInset()->cell(et.back().idx_).size();
1473 for (int i = 0; ; ++i) {
1475 CursorSlice & cur = it.back();
1476 cur.inset()->getCursorPos(cur, xo, yo);
1477 double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
1478 // '<=' in order to take the last possible position
1479 // this is important for clicking behind \sum in e.g. '\sum_i a'
1480 lyxerr << "i: " << i << " d: " << d << " best: " << best_dist << endl;
1481 if (d <= best_dist) {
1492 bool LCursor::idxLineLast()
1494 idx() -= idx() % ncols();
1495 idx() += ncols() - 1;
1501 bool LCursor::idxLeft()
1503 return inset()->idxLeft(*this);
1507 bool LCursor::idxRight()
1509 return inset()->idxRight(*this);
1513 bool LCursor::script(bool up)
1515 // Hack to get \\^ and \\_ working
1516 lyxerr << "handling script: up: " << up << endl;
1517 if (inMacroMode() && macroName() == "\\") {
1519 niceInsert(createMathInset("mathcircumflex"));
1526 string safe = grabAndEraseSelection();
1528 // we are in a nucleus of a script inset, move to _our_ script
1529 inset()->asMathInset()->asScriptInset()->ensure(up);
1532 } else if (pos() != 0 && prevAtom()->asScriptInset()) {
1534 nextAtom().nucleus()->asScriptInset()->ensure(up);
1538 } else if (pos() != 0) {
1540 cell()[pos()] = MathAtom(new MathScriptInset(nextAtom(), up));
1545 plainInsert(MathAtom(new MathScriptInset(up)));
1547 nextAtom().nucleus()->asScriptInset()->ensure(up);
1557 bool LCursor::interpret(char c)
1559 //lyxerr << "interpret 2: '" << c << "'" << endl;
1561 if (inMacroArgMode()) {
1567 MathMacroTemplate const * p = formula()->asMacroTemplate();
1568 if (p && 1 <= n && n <= p->numargs())
1569 insert(MathAtom(new MathMacroArgument(c - '0')));
1571 insert(createMathInset("#"));
1572 interpret(c); // try again
1579 if (inMacroMode()) {
1580 string name = macroName();
1581 //lyxerr << "interpret name: '" << name << "'" << endl;
1584 activeMacro()->setName(activeMacro()->name() + c);
1588 // handle 'special char' macros
1593 if (currentMode() == MathInset::TEXT_MODE)
1594 niceInsert(createMathInset("textbackslash"));
1596 niceInsert(createMathInset("backslash"));
1597 } else if (c == '{') {
1598 niceInsert(MathAtom(new MathBraceInset));
1600 niceInsert(createMathInset(string(1, c)));
1605 // leave macro mode and try again if necessary
1608 niceInsert(MathAtom(new MathBraceInset));
1614 // This is annoying as one has to press <space> far too often.
1618 // leave autocorrect mode if necessary
1619 if (autocorrect() && c == ' ') {
1620 autocorrect() = false;
1625 // just clear selection on pressing the space bar
1626 if (selection() && c == ' ') {
1627 selection() = false;
1634 //lyxerr << "starting with macro" << endl;
1635 insert(MathAtom(new MathUnknownInset("\\", false)));
1640 if (currentMode() == MathInset::TEXT_MODE)
1646 if (currentMode() == MathInset::TEXT_MODE) {
1647 // insert spaces in text mode,
1648 // but suppress direct insertion of two spaces in a row
1649 // the still allows typing '<space>a<space>' and deleting the 'a', but
1650 // it is better than nothing...
1651 if (!pos() != 0 || prevAtom()->getChar() != ' ')
1655 if (pos() != 0 && prevAtom()->asSpaceInset()) {
1656 prevAtom().nucleus()->asSpaceInset()->incSpace();
1661 // if are at the very end, leave the formula
1662 return pos() != lastpos();
1675 if (c == '{' || c == '}' || c == '#' || c == '&' || c == '$') {
1676 niceInsert(createMathInset(string(1, c)));
1681 niceInsert(MathAtom(new MathCommentInset));
1685 // try auto-correction
1686 //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1689 // no special circumstances, so insert the character without any fuss
1691 autocorrect() = true;
1696 void LCursor::lockToggle()
1698 if (pos() != lastpos()) {
1699 // toggle previous inset ...
1700 nextAtom().nucleus()->lock(!nextAtom()->lock());
1701 } else if (popLeft() && pos() != lastpos()) {
1702 // ... or enclosing inset if we are in the last inset position
1703 nextAtom().nucleus()->lock(!nextAtom()->lock());
1709 CursorSlice LCursor::normalAnchor()
1711 if (anchor_.size() < depth()) {
1713 lyxerr << "unusual Anchor size" << endl;
1715 //lyx::BOOST_ASSERT(Anchor_.size() >= cursor.depth());
1716 // use Anchor on the same level as Cursor
1717 CursorSlice normal = anchor_[current_];
1719 if (depth() < anchor_.size() && !(normal < xx())) {
1720 // anchor is behind cursor -> move anchor behind the inset
1729 DispatchResult dispatch(LCursor & cur, FuncRequest const & cmd)
1731 // mouse clicks are somewhat special
1733 switch (cmd.action) {
1734 case LFUN_MOUSE_PRESS:
1735 case LFUN_MOUSE_MOTION:
1736 case LFUN_MOUSE_RELEASE:
1737 case LFUN_MOUSE_DOUBLE: {
1738 CursorSlice & pos = cursor_.back();
1742 if (x < cmd.x && pos() != 0) {
1743 DispatchResult const res = prevAtom().nucleus()->dispatch(cmd);
1744 if (res.dispatched())
1747 if (x > cmd.x && pos() != lastpos()) {
1748 DispatchResult const res = inset()->dispatch(cmd);
1749 if (res.dispatched())
1760 void LCursor::handleFont(string const & font)
1762 lyxerr << "LCursor::handleFont: " << font << endl;
1766 safe = grabAndEraseSelection();
1769 if (lastpos() != 0) {
1770 // something left in the cell
1772 // cursor in first position
1774 } else if (pos() == lastpos()) {
1775 // cursor in last position
1778 // cursor in between. split cell
1779 MathArray::iterator bt = cell().begin();
1780 MathAtom at = createMathInset(font);
1781 at.nucleus()->cell(0) = MathArray(bt, bt + pos());
1782 cell().erase(bt, bt + pos());
1787 // nothing left in the cell
1795 void LCursor::releaseMathCursor()
1798 formula()->insetUnlock(bv());
1802 bool LCursor::inMathed() const
1808 bool LCursor::inTexted() const
1814 InsetBase * LCursor::nextInset()
1816 if (pos() == lastpos())
1819 return nextAtom().nucleus();
1820 Paragraph & par = paragraph();
1821 return par.isInset(pos()) ? par.getInset(pos()) : 0;
1825 InsetBase * LCursor::prevInset()
1830 return prevAtom().nucleus();
1831 Paragraph & par = paragraph();
1832 return par.isInset(pos() - 1) ? par.getInset(pos() - 1) : 0;
1836 void LCursor::message(string const & msg) const
1838 bv().owner()->getLyXFunc().setMessage(msg);
1842 void LCursor::errorMessage(string const & msg) const
1844 bv().owner()->getLyXFunc().setErrorMessage(msg);
1848 string LCursor::selectionAsString(bool label) const
1854 Buffer const & buffer = *bv().buffer();
1856 // should be const ...
1857 ParagraphList::iterator startpit = text()->getPar(selBegin());
1858 ParagraphList::iterator endpit = text()->getPar(selEnd());
1859 size_t const startpos = selBegin().pos();
1860 size_t const endpos = selEnd().pos();
1862 if (startpit == endpit)
1863 return startpit->asString(buffer, startpos, endpos, label);
1865 // First paragraph in selection
1867 startpit->asString(buffer, startpos, startpit->size(), label) + "\n\n";
1869 // The paragraphs in between (if any)
1870 ParagraphList::iterator pit = startpit;
1871 for (++pit; pit != endpit; ++pit)
1872 result += pit->asString(buffer, 0, pit->size(), label) + "\n\n";
1874 // Last paragraph in selection
1875 result += endpit->asString(buffer, 0, endpos, label);