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
9 * \author Stefan Schimanski
11 * Full author contact details are available in file CREDITS.
17 #include "BufferView.h"
18 #include "bufferview_funcs.h"
21 #include "CoordCache.h"
22 #include "CutAndPaste.h"
24 #include "DispatchResult.h"
26 #include "FuncRequest.h"
30 #include "LyXFunc.h" // only for setMessage()
34 #include "Paragraph.h"
35 #include "paragraph_funcs.h"
36 #include "ParIterator.h"
38 #include "insets/InsetTabular.h"
39 #include "insets/InsetText.h"
41 #include "mathed/MathData.h"
42 #include "mathed/InsetMath.h"
43 #include "mathed/InsetMathScript.h"
44 #include "mathed/MacroTable.h"
46 #include "support/limited_stack.h"
48 #include <boost/assert.hpp>
49 #include <boost/bind.hpp>
50 #include <boost/current_function.hpp>
68 positionable(DocIterator const & cursor, DocIterator const & anchor)
70 // avoid deeper nested insets when selecting
71 if (cursor.depth() > anchor.depth())
74 // anchor might be deeper, should have same path then
75 for (size_t i = 0; i < cursor.depth(); ++i)
76 if (&cursor[i].inset() != &anchor[i].inset())
79 // position should be ok.
84 // Find position closest to (x, y) in cell given by iter.
85 // Used only in mathed
86 DocIterator bruteFind2(Cursor const & c, int x, int y)
88 double best_dist = std::numeric_limits<double>::max();
95 et.top().pos() = et.top().asInsetMath()->cell(et.top().idx()).size();
96 for (size_t i = 0;; ++i) {
99 Inset const * inset = &it.inset();
100 std::map<Inset const *, Point> const & data =
101 c.bv().coordCache().getInsets().getData();
102 std::map<Inset const *, Point>::const_iterator I = data.find(inset);
104 // FIXME: in the case where the inset is not in the cache, this
105 // means that no part of it is visible on screen. In this case
106 // we don't do elaborate search and we just return the forwarded
107 // DocIterator at its beginning.
108 if (I == data.end()) {
114 inset->cursorPos(c.bv(), it.top(), c.boundary(), xo, yo);
115 // Convert to absolute
118 double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
119 // '<=' in order to take the last possible position
120 // this is important for clicking behind \sum in e.g. '\sum_i a'
121 LYXERR(Debug::DEBUG) << "i: " << i << " d: " << d
122 << " best: " << best_dist << endl;
123 if (d <= best_dist) {
135 /// moves position closest to (x, y) in given box
136 bool bruteFind(Cursor & cursor,
137 int x, int y, int xlow, int xhigh, int ylow, int yhigh)
139 BOOST_ASSERT(!cursor.empty());
140 Inset & inset = cursor[0].inset();
141 BufferView & bv = cursor.bv();
143 CoordCache::InnerParPosCache const & cache =
144 bv.coordCache().getParPos().find(cursor.bottom().text())->second;
145 // Get an iterator on the first paragraph in the cache
146 DocIterator it(inset);
147 it.push_back(CursorSlice(inset));
148 it.pit() = cache.begin()->first;
149 // Get an iterator after the last paragraph in the cache
150 DocIterator et(inset);
151 et.push_back(CursorSlice(inset));
152 et.pit() = boost::prior(cache.end())->first;
153 if (et.pit() >= et.lastpit())
154 et = doc_iterator_end(inset);
158 double best_dist = std::numeric_limits<double>::max();;
159 DocIterator best_cursor = et;
161 for ( ; it != et; it.forwardPos(true)) {
162 // avoid invalid nesting when selecting
163 if (!cursor.selection() || positionable(it, cursor.anchor_)) {
164 Point p = bv_funcs::getPos(bv, it, false);
167 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
168 double const dx = xo - x;
169 double const dy = yo - y;
170 double const d = dx * dx + dy * dy;
171 // '<=' in order to take the last possible position
172 // this is important for clicking behind \sum in e.g. '\sum_i a'
173 if (d <= best_dist) {
174 // lyxerr << "*" << endl;
182 if (best_cursor != et) {
183 cursor.setCursor(best_cursor);
191 /// moves position closest to (x, y) in given box
192 bool bruteFind3(Cursor & cur, int x, int y, bool up)
194 BufferView & bv = cur.bv();
195 int ylow = up ? 0 : y + 1;
196 int yhigh = up ? y - 1 : bv.workHeight();
198 int xhigh = bv.workWidth();
200 // FIXME: bit more work needed to get 'from' and 'to' right.
201 pit_type from = cur.bottom().pit();
202 //pit_type to = cur.bottom().pit();
203 //lyxerr << "Pit start: " << from << endl;
205 //lyxerr << "bruteFind3: x: " << x << " y: " << y
206 // << " xlow: " << xlow << " xhigh: " << xhigh
207 // << " ylow: " << ylow << " yhigh: " << yhigh
209 Inset & inset = bv.buffer()->inset();
210 DocIterator it = doc_iterator_begin(inset);
212 DocIterator et = doc_iterator_end(inset);
214 double best_dist = std::numeric_limits<double>::max();
215 DocIterator best_cursor = et;
217 for ( ; it != et; it.forwardPos()) {
218 // avoid invalid nesting when selecting
219 if (bv_funcs::status(&bv, it) == bv_funcs::CUR_INSIDE
220 && (!cur.selection() || positionable(it, cur.anchor_))) {
221 Point p = bv_funcs::getPos(bv, it, false);
224 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
225 double const dx = xo - x;
226 double const dy = yo - y;
227 double const d = dx * dx + dy * dy;
228 //lyxerr << "itx: " << xo << " ity: " << yo << " d: " << d
229 // << " dx: " << dx << " dy: " << dy
230 // << " idx: " << it.idx() << " pos: " << it.pos()
233 // '<=' in order to take the last possible position
234 // this is important for clicking behind \sum in e.g. '\sum_i a'
235 if (d <= best_dist) {
236 //lyxerr << "*" << endl;
244 //lyxerr << "best_dist: " << best_dist << " cur:\n" << best_cursor << endl;
245 if (best_cursor == et)
247 cur.setCursor(best_cursor);
251 docstring parbreak(Paragraph const & par)
253 odocstringstream ods;
255 // only add blank line if we're not in an ERT or Listings inset
256 if (par.ownerCode() != Inset::ERT_CODE
257 && par.ownerCode() != Inset::LISTINGS_CODE)
265 // be careful: this is called from the bv's constructor, too, so
266 // bv functions are not yet available!
267 Cursor::Cursor(BufferView & bv)
268 : DocIterator(), bv_(&bv), anchor_(), x_target_(-1), textTargetOffset_(0),
269 selection_(false), mark_(false), logicalpos_(false)
273 void Cursor::reset(Inset & inset)
276 push_back(CursorSlice(inset));
277 anchor_ = DocIterator(inset);
284 // this (intentionally) does neither touch anchor nor selection status
285 void Cursor::setCursor(DocIterator const & cur)
287 DocIterator::operator=(cur);
291 void Cursor::dispatch(FuncRequest const & cmd0)
293 LYXERR(Debug::DEBUG) << BOOST_CURRENT_FUNCTION
294 << " cmd: " << cmd0 << '\n'
300 FuncRequest cmd = cmd0;
303 // store some values to be used inside of the handlers
304 getPos(beforeDispX_, beforeDispY_);
305 beforeDispatchCursor_ = *this;
306 for (; depth(); pop()) {
307 LYXERR(Debug::DEBUG) << "Cursor::dispatch: cmd: "
308 << cmd0 << endl << *this << endl;
309 BOOST_ASSERT(pos() <= lastpos());
310 BOOST_ASSERT(idx() <= lastidx());
311 BOOST_ASSERT(pit() <= lastpit());
313 // The common case is 'LFUN handled, need update', so make the
314 // LFUN handler's life easier by assuming this as default value.
315 // The handler can reset the update and val flags if necessary.
316 disp_.update(Update::FitCursor | Update::Force);
317 disp_.dispatched(true);
318 inset().dispatch(*this, cmd);
319 if (disp_.dispatched())
323 // it completely to get a 'bomb early' behaviour in case this
324 // object will be used again.
325 if (!disp_.dispatched()) {
326 LYXERR(Debug::DEBUG) << "RESTORING OLD CURSOR!" << endl;
328 disp_.update(Update::None);
329 disp_.dispatched(false);
331 // restore the previous one because nested Cursor::dispatch calls
332 // are possible which would change it
333 beforeDispatchCursor_ = safe.beforeDispatchCursor_;
338 DispatchResult Cursor::result() const
344 BufferView & Cursor::bv() const
351 Buffer & Cursor::buffer() const
354 BOOST_ASSERT(bv_->buffer());
355 return *bv_->buffer();
361 BOOST_ASSERT(depth() >= 1);
366 void Cursor::push(Inset & p)
368 push_back(CursorSlice(p));
372 void Cursor::pushLeft(Inset & p)
374 BOOST_ASSERT(!empty());
375 //lyxerr << "Entering inset " << t << " left" << endl;
381 bool Cursor::popLeft()
383 BOOST_ASSERT(!empty());
384 //lyxerr << "Leaving inset to the left" << endl;
385 inset().notifyCursorLeaves(*this);
393 bool Cursor::popRight()
395 BOOST_ASSERT(!empty());
396 //lyxerr << "Leaving inset to the right" << endl;
397 const pos_type lp = (depth() > 1) ? (*this)[depth() - 2].lastpos() : 0;
398 inset().notifyCursorLeaves(*this);
402 pos() += lastpos() - lp + 1;
407 int Cursor::currentMode()
409 BOOST_ASSERT(!empty());
410 for (int i = depth() - 1; i >= 0; --i) {
411 int res = operator[](i).inset().currentMode();
412 if (res != Inset::UNDECIDED_MODE)
415 return Inset::TEXT_MODE;
419 void Cursor::getPos(int & x, int & y) const
421 Point p = bv_funcs::getPos(bv(), *this, boundary());
427 Row const & Cursor::textRow() const
429 ParagraphMetrics const & pm = bv().parMetrics(text(), pit());
430 BOOST_ASSERT(!pm.rows().empty());
431 return pm.getRow(pos(), boundary());
435 void Cursor::resetAnchor()
442 bool Cursor::posLeft()
451 bool Cursor::posRight()
453 if (pos() == lastpos())
460 CursorSlice Cursor::anchor() const
462 BOOST_ASSERT(anchor_.depth() >= depth());
463 CursorSlice normal = anchor_[depth() - 1];
464 if (depth() < anchor_.depth() && top() <= normal) {
465 // anchor is behind cursor -> move anchor behind the inset
472 CursorSlice Cursor::selBegin() const
476 return anchor() < top() ? anchor() : top();
480 CursorSlice Cursor::selEnd() const
484 return anchor() > top() ? anchor() : top();
488 DocIterator Cursor::selectionBegin() const
492 DocIterator di = (anchor() < top() ? anchor_ : *this);
498 DocIterator Cursor::selectionEnd() const
502 DocIterator di = (anchor() > top() ? anchor_ : *this);
503 if (di.depth() > depth()) {
511 void Cursor::setSelection()
514 // A selection with no contents is not a selection
516 #warning doesnt look ok
518 if (pit() == anchor().pit() && pos() == anchor().pos())
523 void Cursor::setSelection(DocIterator const & where, int n)
532 void Cursor::clearSelection()
540 void Cursor::setTargetX(int x)
543 textTargetOffset_ = 0;
547 int Cursor::x_target() const
553 void Cursor::clearTargetX()
556 textTargetOffset_ = 0;
560 void Cursor::updateTextTargetOffset()
565 textTargetOffset_ = x - x_target_;
569 void Cursor::info(odocstream & os) const
571 for (int i = 1, n = depth(); i < n; ++i) {
572 operator[](i).inset().infoize(os);
576 Inset const * inset = prevInset();
577 // prevInset() can return 0 in certain case.
579 prevInset()->infoize2(os);
581 // overwite old message
586 bool Cursor::selHandle(bool sel)
588 //lyxerr << "Cursor::selHandle" << endl;
589 if (sel == selection())
593 cap::saveSelection(*this);
601 std::ostream & operator<<(std::ostream & os, Cursor const & cur)
603 os << "\n cursor: | anchor:\n";
604 for (size_t i = 0, n = cur.depth(); i != n; ++i) {
605 os << " " << cur[i] << " | ";
606 if (i < cur.anchor_.depth())
607 os << cur.anchor_[i];
609 os << "-------------------------------";
612 for (size_t i = cur.depth(), n = cur.anchor_.depth(); i < n; ++i) {
613 os << "------------------------------- | " << cur.anchor_[i] << "\n";
615 os << " selection: " << cur.selection_
616 << " x_target: " << cur.x_target_ << endl;
623 ///////////////////////////////////////////////////////////////////
625 // The part below is the non-integrated rest of the original math
626 // cursor. This should be either generalized for texted or moved
627 // back to mathed (in most cases to InsetMathNest).
629 ///////////////////////////////////////////////////////////////////
631 #include "mathed/InsetMathChar.h"
632 #include "mathed/InsetMathGrid.h"
633 #include "mathed/InsetMathScript.h"
634 #include "mathed/InsetMathUnknown.h"
635 #include "mathed/MathFactory.h"
636 #include "mathed/MathStream.h"
637 #include "mathed/MathSupport.h"
642 //#define FILEDEBUG 1
645 bool Cursor::isInside(Inset const * p)
647 for (size_t i = 0; i != depth(); ++i)
648 if (&operator[](i).inset() == p)
654 void Cursor::leaveInset(Inset const & inset)
656 for (size_t i = 0; i != depth(); ++i) {
657 if (&operator[](i).inset() == &inset) {
665 bool Cursor::openable(MathAtom const & t) const
676 // we can't move into anything new during selection
677 if (depth() >= anchor_.depth())
679 if (!ptr_cmp(t.nucleus(), &anchor_[depth()].inset()))
686 void Cursor::setScreenPos(int x, int y)
689 bruteFind(*this, x, y, 0, bv().workWidth(), 0, bv().workHeight());
694 void Cursor::plainErase()
700 void Cursor::markInsert()
702 insert(char_type(0));
706 void Cursor::markErase()
712 void Cursor::plainInsert(MathAtom const & t)
714 cell().insert(pos(), t);
719 void Cursor::insert(docstring const & str)
721 for_each(str.begin(), str.end(),
722 boost::bind(static_cast<void(Cursor::*)(char_type)>
723 (&Cursor::insert), this, _1));
727 void Cursor::insert(char_type c)
729 //lyxerr << "Cursor::insert char '" << c << "'" << endl;
730 BOOST_ASSERT(!empty());
732 cap::selClearOrDel(*this);
733 insert(new InsetMathChar(c));
735 text()->insertChar(*this, c);
740 void Cursor::insert(MathAtom const & t)
742 //lyxerr << "Cursor::insert MathAtom '" << t << "'" << endl;
744 cap::selClearOrDel(*this);
749 void Cursor::insert(Inset * inset)
752 insert(MathAtom(inset));
754 text()->insertInset(*this, inset);
758 void Cursor::niceInsert(docstring const & t)
769 void Cursor::niceInsert(MathAtom const & t)
772 docstring const safe = cap::grabAndEraseSelection(*this);
774 // enter the new inset and move the contents of the selection if possible
777 // be careful here: don't use 'pushLeft(t)' as this we need to
778 // push the clone, not the original
779 pushLeft(*nextInset());
780 // We may not use niceInsert here (recursion)
788 void Cursor::insert(MathData const & ar)
792 cap::eraseSelection(*this);
793 cell().insert(pos(), ar);
798 bool Cursor::backspace()
800 autocorrect() = false;
803 cap::eraseSelection(*this);
808 // If empty cell, and not part of a big cell
809 if (lastpos() == 0 && inset().nargs() == 1) {
811 // Directly delete empty cell: [|[]] => [|]
817 // [|], can not delete from inside
829 InsetMathUnknown * p = activeMacro();
830 if (p->name().size() > 1) {
831 p->setName(p->name().substr(0, p->name().size() - 1));
836 if (pos() != 0 && prevAtom()->nargs() > 0) {
837 // let's require two backspaces for 'big stuff' and
838 // highlight on the first
852 autocorrect() = false;
857 cap::eraseSelection(*this);
861 // delete empty cells if possible
862 if (pos() == lastpos() && inset().idxDelete(idx()))
865 // special behaviour when in last position of cell
866 if (pos() == lastpos()) {
867 bool one_cell = inset().nargs() == 1;
868 if (one_cell && lastpos() == 0) {
870 // Directly delete empty cell: [|[]] => [|]
876 // [|], can not delete from inside
881 inset().idxGlue(idx());
885 // 'clever' UI hack: only erase large items if previously slected
886 if (pos() != lastpos() && nextAtom()->nargs() > 0) {
901 DocIterator save = *this;
902 FuncRequest cmd(selection() ? LFUN_UP_SELECT : LFUN_UP, docstring());
904 if (disp_.dispatched())
907 autocorrect() = false;
915 DocIterator save = *this;
916 FuncRequest cmd(selection() ? LFUN_DOWN_SELECT : LFUN_DOWN, docstring());
918 if (disp_.dispatched())
921 autocorrect() = false;
926 bool Cursor::macroModeClose()
930 InsetMathUnknown * p = activeMacro();
932 docstring const s = p->name();
936 // do nothing if the macro name is empty
940 // trigger updates of macros, at least, if no full
941 // updates take place anyway
942 updateFlags(Update::Force);
944 docstring const name = s.substr(1);
945 InsetMathNest * const in = inset().asInsetMath()->asNestInset();
946 if (in && in->interpretString(*this, s))
948 plainInsert(createInsetMath(name));
953 docstring Cursor::macroName()
955 return inMacroMode() ? activeMacro()->name() : docstring();
959 void Cursor::handleNest(MathAtom const & a, int c)
961 //lyxerr << "Cursor::handleNest: " << c << endl;
963 asArray(cap::grabAndEraseSelection(*this), t.nucleus()->cell(c));
966 pushLeft(*nextInset());
970 int Cursor::targetX() const
972 if (x_target() != -1)
981 int Cursor::textTargetOffset() const
983 return textTargetOffset_;
987 void Cursor::setTargetX()
996 bool Cursor::inMacroMode() const
1002 InsetMathUnknown const * p = prevAtom()->asUnknownInset();
1003 return p && !p->final();
1007 InsetMathUnknown * Cursor::activeMacro()
1009 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1013 void Cursor::pullArg()
1015 #ifdef WITH_WARNINGS
1018 MathData ar = cell();
1019 if (popLeft() && inMathed()) {
1021 cell().insert(pos(), ar);
1024 //formula()->mutateToText();
1029 void Cursor::touch()
1031 #ifdef WITH_WARNINGS
1035 DocIterator::const_iterator it = begin();
1036 DocIterator::const_iterator et = end();
1037 for ( ; it != et; ++it)
1043 void Cursor::normalize()
1045 if (idx() > lastidx()) {
1046 lyxerr << "this should not really happen - 1: "
1047 << idx() << ' ' << nargs()
1048 << " in: " << &inset() << endl;
1052 if (pos() > lastpos()) {
1053 lyxerr << "this should not really happen - 2: "
1054 << pos() << ' ' << lastpos() << " in idx: " << idx()
1056 odocstringstream os;
1057 WriteStream wi(os, false, true);
1058 inset().asInsetMath()->write(wi);
1059 lyxerr << to_utf8(os.str()) << endl;
1065 bool Cursor::upDownInMath(bool up)
1067 // Be warned: The 'logic' implemented in this function is highly
1068 // fragile. A distance of one pixel or a '<' vs '<=' _really
1069 // matters. So fiddle around with it only if you think you know
1070 // what you are doing!
1076 // check if we had something else in mind, if not, this is the future
1078 if (x_target_ == -1)
1080 else if (inset().asTextInset() && xo - textTargetOffset() != x_target()) {
1081 // In text mode inside the line (not left or right) possibly set a new target_x,
1082 // but only if we are somewhere else than the previous target-offset.
1084 // We want to keep the x-target on subsequent up/down movements
1085 // that cross beyond the end of short lines. Thus a special
1086 // handling when the cursor is at the end of line: Use the new
1087 // x-target only if the old one was before the end of line
1088 // or the old one was after the beginning of the line
1089 bool inRTL = isWithinRtlParagraph(*this);
1093 left = pos() == textRow().endpos();
1094 right = pos() == textRow().pos();
1096 left = pos() == textRow().pos();
1097 right = pos() == textRow().endpos();
1099 if ((!left && !right) ||
1100 (left && !right && xo < x_target_) ||
1101 (!left && right && x_target_ < xo))
1108 // try neigbouring script insets
1110 if (inMathed() && !selection()) {
1113 InsetMathScript const * p = prevAtom()->asScriptInset();
1114 if (p && p->has(up)) {
1116 push(*const_cast<InsetMathScript*>(p));
1117 idx() = p->idxOfScript(up);
1120 // we went in the right direction? Otherwise don't jump into the script
1124 if ((!up && y <= beforeDispY_) ||
1125 (up && y >= beforeDispY_))
1133 if (pos() != lastpos()) {
1134 InsetMathScript const * p = nextAtom()->asScriptInset();
1135 if (p && p->has(up)) {
1136 push(*const_cast<InsetMathScript*>(p));
1137 idx() = p->idxOfScript(up);
1140 // we went in the right direction? Otherwise don't jump into the script
1144 if ((!up && y <= beforeDispY_) ||
1145 (up && y >= beforeDispY_))
1153 // try to find an inset that knows better then we,
1154 if (inset().idxUpDown(*this, up)) {
1155 //lyxerr << "idxUpDown triggered" << endl;
1156 // try to find best position within this inset
1158 setCursor(bruteFind2(*this, xo, yo));
1162 // any improvement going just out of inset?
1163 if (popLeft() && inMathed()) {
1164 //lyxerr << "updown: popLeft succeeded" << endl;
1168 if (up ? ynew < beforeDispY_ : ynew > beforeDispY_)
1172 // no success, we are probably at the document top or bottom
1178 bool Cursor::upDownInText(bool up, bool & updateNeeded)
1180 BOOST_ASSERT(text());
1188 // update the targetX - this is here before the "return false"
1189 // to set a new target which can be used by InsetTexts above
1190 // if we cannot move up/down inside this inset anymore
1191 if (x_target_ == -1)
1193 else if (xo - textTargetOffset() != x_target() &&
1194 depth() == beforeDispatchCursor_.depth()) {
1195 // In text mode inside the line (not left or right) possibly set a new target_x,
1196 // but only if we are somewhere else than the previous target-offset.
1198 // We want to keep the x-target on subsequent up/down movements
1199 // that cross beyond the end of short lines. Thus a special
1200 // handling when the cursor is at the end of line: Use the new
1201 // x-target only if the old one was before the end of line
1202 // or the old one was after the beginning of the line
1203 bool inRTL = isWithinRtlParagraph(*this);
1207 left = pos() == textRow().endpos();
1208 right = pos() == textRow().pos();
1210 left = pos() == textRow().pos();
1211 right = pos() == textRow().endpos();
1213 if ((!left && !right) ||
1214 (left && !right && xo < x_target_) ||
1215 (!left && right && x_target_ < xo))
1222 // first get the current line
1223 TextMetrics const & tm = bv_->textMetrics(text());
1224 ParagraphMetrics const & pm = tm.parMetrics(pit());
1226 if (pos() && boundary())
1227 row = pm.pos2row(pos() - 1);
1229 row = pm.pos2row(pos());
1231 // are we not at the start or end?
1233 if (pit() == 0 && row == 0)
1236 if (pit() + 1 >= int(text()->paragraphs().size()) &&
1237 row + 1 >= int(pm.rows().size()))
1241 // with and without selection are handled differently
1243 int yo = bv_funcs::getPos(bv(), *this, boundary()).y_;
1245 // To next/previous row
1247 text()->editXY(*this, xo, yo - textRow().ascent() - 1);
1249 text()->editXY(*this, xo, yo + textRow().descent() + 1);
1252 // This happens when you move out of an inset.
1253 // And to give the DEPM the possibility of doing
1254 // something we must provide it with two different
1256 Cursor dummy = *this;
1259 if (bv().checkDepm(dummy, old)) {
1260 updateNeeded = true;
1261 // Make sure that cur gets back whatever happened to dummy(Lgb)
1265 // if there is a selection, we stay out of any inset, and just jump to the right position:
1269 top().pos() = std::min(tm.x2pos(pit(), row - 1, xo), top().lastpos());
1270 } else if (pit() > 0) {
1272 ParagraphMetrics const & pmcur = bv_->parMetrics(text(), pit());
1273 top().pos() = std::min(tm.x2pos(pit(), pmcur.rows().size() - 1, xo), top().lastpos());
1276 if (row + 1 < int(pm.rows().size())) {
1277 top().pos() = std::min(tm.x2pos(pit(), row + 1, xo), top().lastpos());
1278 } else if (pit() + 1 < int(text()->paragraphs().size())) {
1280 top().pos() = std::min(tm.x2pos(pit(), 0, xo), top().lastpos());
1284 updateNeeded |= bv().checkDepm(*this, old);
1287 updateTextTargetOffset();
1292 void Cursor::handleFont(string const & font)
1294 LYXERR(Debug::DEBUG) << BOOST_CURRENT_FUNCTION << ": " << font << endl;
1298 safe = cap::grabAndEraseSelection(*this);
1301 if (lastpos() != 0) {
1302 // something left in the cell
1304 // cursor in first position
1306 } else if (pos() == lastpos()) {
1307 // cursor in last position
1310 // cursor in between. split cell
1311 MathData::iterator bt = cell().begin();
1312 MathAtom at = createInsetMath(from_utf8(font));
1313 at.nucleus()->cell(0) = MathData(bt, bt + pos());
1314 cell().erase(bt, bt + pos());
1319 // nothing left in the cell
1327 void Cursor::message(docstring const & msg) const
1329 theLyXFunc().setMessage(msg);
1333 void Cursor::errorMessage(docstring const & msg) const
1335 theLyXFunc().setErrorMessage(msg);
1339 docstring Cursor::selectionAsString(bool label) const
1345 Buffer const & buffer = *bv().buffer();
1346 ParagraphList const & pars = text()->paragraphs();
1348 // should be const ...
1349 pit_type startpit = selBegin().pit();
1350 pit_type endpit = selEnd().pit();
1351 size_t const startpos = selBegin().pos();
1352 size_t const endpos = selEnd().pos();
1354 if (startpit == endpit)
1355 return pars[startpit].asString(buffer, startpos, endpos, label);
1357 // First paragraph in selection
1358 docstring result = pars[startpit].
1359 asString(buffer, startpos, pars[startpit].size(), label)
1360 + parbreak(pars[startpit]);
1362 // The paragraphs in between (if any)
1363 for (pit_type pit = startpit + 1; pit != endpit; ++pit) {
1364 Paragraph const & par = pars[pit];
1365 result += par.asString(buffer, 0, par.size(), label)
1366 + parbreak(pars[pit]);
1369 // Last paragraph in selection
1370 result += pars[endpit].asString(buffer, 0, endpos, label);
1376 return cap::grabSelection(*this);
1382 docstring Cursor::currentState()
1385 odocstringstream os;
1391 return text()->currentState(*this);
1397 docstring Cursor::getPossibleLabel()
1399 return inMathed() ? from_ascii("eq:") : text()->getPossibleLabel(*this);
1403 Encoding const * Cursor::getEncoding() const
1410 // go up until first non-0 text is hit
1411 // (innermost text is 0 in mathed)
1412 for (s = depth() - 1; s >= 0; --s)
1413 if (operator[](s).text())
1415 CursorSlice const & sl = operator[](s);
1416 Text const & text = *sl.text();
1417 Font font = text.getPar(sl.pit()).getFont(
1418 bv().buffer()->params(), sl.pos(), outerFont(sl.pit(), text.paragraphs()));
1419 return font.language()->encoding();
1423 void Cursor::undispatched()
1425 disp_.dispatched(false);
1429 void Cursor::dispatched()
1431 disp_.dispatched(true);
1435 void Cursor::updateFlags(Update::flags f)
1441 void Cursor::noUpdate()
1443 disp_.update(Update::None);
1447 Font Cursor::getFont() const
1449 // The logic here should more or less match to the Text::setCurrentFont
1450 // logic, i.e. the cursor height should give a hint what will happen
1451 // if a character is entered.
1453 // HACK. far from being perfect...
1454 // go up until first non-0 text is hit
1455 // (innermost text is 0 in mathed)
1457 for (s = depth() - 1; s >= 0; --s)
1458 if (operator[](s).text())
1460 CursorSlice const & sl = operator[](s);
1461 Text const & text = *sl.text();
1462 Paragraph const & par = text.getPar(sl.pit());
1464 // on boundary, so we are really at the character before
1465 pos_type pos = sl.pos();
1466 if (pos > 0 && boundary())
1469 // on space? Take the font before (only for RTL boundary stay)
1471 if (pos == sl.lastpos()
1472 || (par.isSeparator(pos) &&
1473 !text.isRTLBoundary(buffer(), par, pos)))
1477 // get font at the position
1478 Font font = par.getFont(bv().buffer()->params(), pos,
1479 outerFont(sl.pit(), text.paragraphs()));
1485 void Cursor::fixIfBroken()
1487 if (DocIterator::fixIfBroken()) {
1494 bool notifyCursorLeaves(DocIterator const & old, Cursor & cur)
1496 // find inset in common
1498 for (i = 0; i < old.depth() && i < cur.depth(); ++i) {
1499 if (&old.inset() != &cur.inset())
1503 // notify everything on top of the common part in old cursor,
1504 // but stop if the inset claims the cursor to be invalid now
1505 for (; i < old.depth(); ++i) {
1506 if (old[i].inset().notifyCursorLeaves(cur))