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
8 * \author Dov Feldstern
10 * \author Stefan Schimanski
12 * Full author contact details are available in file CREDITS.
18 #include "BufferView.h"
19 #include "CoordCache.h"
21 #include "CutAndPaste.h"
22 #include "DispatchResult.h"
26 #include "FuncRequest.h"
29 #include "LyXAction.h"
31 #include "Paragraph.h"
32 #include "ParIterator.h"
35 #include "TextMetrics.h"
36 #include "TocBackend.h"
38 #include "support/debug.h"
39 #include "support/docstream.h"
40 #include "support/ExceptionMessage.h"
41 #include "support/gettext.h"
42 #include "support/lassert.h"
44 #include "insets/InsetTabular.h"
45 #include "insets/InsetText.h"
47 #include "mathed/InsetMath.h"
48 #include "mathed/InsetMathBrace.h"
49 #include "mathed/InsetMathScript.h"
50 #include "mathed/MacroTable.h"
51 #include "mathed/MathData.h"
52 #include "mathed/MathMacro.h"
54 #include "support/bind.h"
67 // Find position closest to (x, y) in cell given by iter.
68 // Used only in mathed
69 DocIterator bruteFind2(Cursor const & c, int x, int y)
71 double best_dist = numeric_limits<double>::max();
78 et.top().pos() = et.top().asInsetMath()->cell(et.top().idx()).size();
79 for (size_t i = 0;; ++i) {
82 Inset const * inset = &it.inset();
83 CoordCache const & cache = c.bv().coordCache();
85 // FIXME: in the case where the inset is not in the cache, this
86 // means that no part of it is visible on screen. In this case
87 // we don't do elaborate search and we just return the forwarded
88 // DocIterator at its beginning.
89 if (!cache.getInsets().has(inset)) {
94 Point const o = cache.getInsets().xy(inset);
95 inset->cursorPos(c.bv(), it.top(), c.boundary(), xo, yo);
96 // Convert to absolute
99 double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
100 // '<=' in order to take the last possible position
101 // this is important for clicking behind \sum in e.g. '\sum_i a'
102 LYXERR(Debug::DEBUG, "i: " << i << " d: " << d
103 << " best: " << best_dist);
104 if (d <= best_dist) {
117 /// moves position closest to (x, y) in given box
118 bool bruteFind(Cursor & cursor,
119 int x, int y, int xlow, int xhigh, int ylow, int yhigh)
121 LASSERT(!cursor.empty(), return false);
122 Inset & inset = cursor[0].inset();
123 BufferView & bv = cursor.bv();
125 CoordCache::InnerParPosCache const & cache =
126 bv.coordCache().getParPos().find(cursor.bottom().text())->second;
127 // Get an iterator on the first paragraph in the cache
128 DocIterator it(inset);
129 it.push_back(CursorSlice(inset));
130 it.pit() = cache.begin()->first;
131 // Get an iterator after the last paragraph in the cache
132 DocIterator et(inset);
133 et.push_back(CursorSlice(inset));
134 et.pit() = prev(cache.end(), 1)->first;
135 if (et.pit() >= et.lastpit())
136 et = doc_iterator_end(inset);
140 double best_dist = numeric_limits<double>::max();
141 DocIterator best_cursor = et;
143 for ( ; it != et; it.forwardPos(true)) {
144 // avoid invalid nesting when selecting
145 if (!cursor.selection() || positionable(it, cursor.anchor_)) {
146 Point p = bv.getPos(it, false);
149 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
150 double const dx = xo - x;
151 double const dy = yo - y;
152 double const d = dx * dx + dy * dy;
153 // '<=' in order to take the last possible position
154 // this is important for clicking behind \sum in e.g. '\sum_i a'
155 if (d <= best_dist) {
156 // lyxerr << "*" << endl;
164 if (best_cursor != et) {
165 cursor.setCursor(best_cursor);
174 /// moves position closest to (x, y) in given box
175 bool bruteFind3(Cursor & cur, int x, int y, bool up)
177 BufferView & bv = cur.bv();
178 int ylow = up ? 0 : y + 1;
179 int yhigh = up ? y - 1 : bv.workHeight();
181 int xhigh = bv.workWidth();
183 // FIXME: bit more work needed to get 'from' and 'to' right.
184 pit_type from = cur.bottom().pit();
185 //pit_type to = cur.bottom().pit();
186 //lyxerr << "Pit start: " << from << endl;
188 //lyxerr << "bruteFind3: x: " << x << " y: " << y
189 // << " xlow: " << xlow << " xhigh: " << xhigh
190 // << " ylow: " << ylow << " yhigh: " << yhigh
192 DocIterator it = doc_iterator_begin(cur.buffer());
194 DocIterator et = doc_iterator_end(cur.buffer());
196 double best_dist = numeric_limits<double>::max();
197 DocIterator best_cursor = et;
199 for ( ; it != et; it.forwardPos()) {
200 // avoid invalid nesting when selecting
201 if (bv.cursorStatus(it) == CUR_INSIDE
202 && (!cur.selection() || positionable(it, cur.realAnchor()))) {
203 // If this function is ever used again, check
204 // whether this is the same as "bv.getPos(it,
205 // false)" with boundary = false.
206 Point p = bv.getPos(it);
209 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
210 double const dx = xo - x;
211 double const dy = yo - y;
212 double const d = dx * dx + dy * dy;
213 //lyxerr << "itx: " << xo << " ity: " << yo << " d: " << d
214 // << " dx: " << dx << " dy: " << dy
215 // << " idx: " << it.idx() << " pos: " << it.pos()
218 // '<=' in order to take the last possible position
219 // this is important for clicking behind \sum in e.g. '\sum_i a'
220 if (d <= best_dist) {
221 //lyxerr << "*" << endl;
229 //lyxerr << "best_dist: " << best_dist << " cur:\n" << best_cursor << endl;
230 if (best_cursor == et)
232 cur.setCursor(best_cursor);
239 CursorData::CursorData()
240 : DocIterator(), anchor_(),
241 selection_(false), mark_(false), word_selection_(false),
242 logicalpos_(false), current_font(inherit_font),
243 autocorrect_(false), macromode_(false)
247 CursorData::CursorData(Buffer * buffer)
248 : DocIterator(buffer), anchor_(),
249 selection_(false), mark_(false), word_selection_(false),
250 logicalpos_(false), current_font(inherit_font),
251 autocorrect_(false), macromode_(false)
255 CursorData::CursorData(DocIterator const & dit)
256 : DocIterator(dit), anchor_(),
257 selection_(false), mark_(false), word_selection_(false),
258 logicalpos_(false), current_font(inherit_font),
259 autocorrect_(false), macromode_(false)
265 ostream & operator<<(ostream & os, CursorData const & cur)
267 os << "\n cursor: | anchor:\n";
268 for (size_t i = 0, n = cur.depth(); i != n; ++i) {
269 os << " " << cur[i] << " | ";
270 if (i < cur.anchor_.depth())
271 os << cur.anchor_[i];
273 os << "-------------------------------";
276 for (size_t i = cur.depth(), n = cur.anchor_.depth(); i < n; ++i) {
277 os << "------------------------------- | " << cur.anchor_[i] << "\n";
279 os << " selection: " << cur.selection_
280 // << " x_target: " << cur.x_target_
281 << " boundary: " << cur.boundary() << endl;
286 LyXErr & operator<<(LyXErr & os, CursorData const & cur)
293 // be careful: this is called from the bv's constructor, too, so
294 // bv functions are not yet available!
295 Cursor::Cursor(BufferView & bv)
296 : CursorData(&bv.buffer()), bv_(&bv),
297 x_target_(-1), textTargetOffset_(0),
298 beforeDispatchPosX_(0), beforeDispatchPosY_(0)
305 push_back(CursorSlice(buffer()->inset()));
306 anchor_ = doc_iterator_begin(buffer());
308 new_word_ = doc_iterator_begin(buffer());
316 // this (intentionally) does neither touch anchor nor selection status
317 void Cursor::setCursor(DocIterator const & cur)
319 DocIterator::operator=(cur);
323 void Cursor::setCursorToAnchor()
326 DocIterator normal = anchor_;
327 while (depth() < normal.depth())
329 if (depth() < anchor_.depth() && top() <= anchor_[depth() - 1])
336 void Cursor::setCursorData(CursorData const & data)
338 CursorData::operator=(data);
342 bool Cursor::getStatus(FuncRequest const & cmd, FuncStatus & status) const
346 // Try to fix cursor in case it is broken.
349 // Is this a function that acts on inset at point?
350 Inset * inset = cur.nextInset();
351 if (lyxaction.funcHasFlag(cmd.action(), LyXAction::AtPoint)
352 && inset && inset->getStatus(cur, cmd, status))
355 // This is, of course, a mess. Better create a new doc iterator and use
356 // this in Inset::getStatus. This might require an additional
357 // BufferView * arg, though (which should be avoided)
358 //Cursor safe = *this;
360 for ( ; cur.depth(); cur.pop()) {
361 //lyxerr << "\nCursor::getStatus: cmd: " << cmd << endl << *this << endl;
362 // LASSERT: Is it safe to continue here, or should we return?
363 LASSERT(cur.idx() <= cur.lastidx(), /**/);
364 LASSERT(cur.pit() <= cur.lastpit(), /**/);
365 LASSERT(cur.pos() <= cur.lastpos(), /**/);
367 // The inset's getStatus() will return 'true' if it made
368 // a definitive decision on whether it want to handle the
369 // request or not. The result of this decision is put into
370 // the 'status' parameter.
371 if (cur.inset().getStatus(cur, cmd, status)) {
380 void Cursor::saveBeforeDispatchPosXY()
382 getPos(beforeDispatchPosX_, beforeDispatchPosY_);
386 void Cursor::dispatch(FuncRequest const & cmd0)
388 LYXERR(Debug::ACTION, "Cursor::dispatch: cmd: " << cmd0 << '\n' << *this);
393 FuncRequest cmd = cmd0;
396 disp_ = DispatchResult();
400 // Is this a function that acts on inset at point?
401 if (lyxaction.funcHasFlag(cmd.action(), LyXAction::AtPoint)
403 disp_.dispatched(true);
404 disp_.screenUpdate(Update::FitCursor | Update::Force);
405 FuncRequest tmpcmd = cmd;
406 LYXERR(Debug::DEBUG, "Cursor::dispatch: (AtPoint) cmd: "
407 << cmd0 << endl << *this);
408 nextInset()->dispatch(*this, tmpcmd);
409 if (disp_.dispatched()) {
415 // store some values to be used inside of the handlers
416 beforeDispatchCursor_ = *this;
417 for (; depth(); pop(), boundary(false)) {
418 LYXERR(Debug::DEBUG, "Cursor::dispatch: cmd: "
419 << cmd0 << endl << *this);
421 // In any of these cases, the cursor is invalid, and we should
422 // try to save this document rather than crash.
423 LBUFERR(pos() <= lastpos());
424 LBUFERR(idx() <= lastidx());
425 LBUFERR(pit() <= lastpit());
427 // The common case is 'LFUN handled, need update', so make the
428 // LFUN handler's life easier by assuming this as default value.
429 // The handler can reset the update and val flags if necessary.
430 disp_.screenUpdate(Update::FitCursor | Update::Force);
431 disp_.dispatched(true);
432 inset().dispatch(*this, cmd);
433 if (disp_.dispatched())
437 // it completely to get a 'bomb early' behaviour in case this
438 // object will be used again.
439 if (!disp_.dispatched()) {
440 LYXERR(Debug::DEBUG, "RESTORING OLD CURSOR!");
441 // We might have invalidated the cursor when removing an empty
442 // paragraph while the cursor could not be moved out the inset
443 // while we initially thought we could. This might happen when
444 // a multiline inset becomes an inline inset when the second
445 // paragraph is removed.
446 if (safe.pit() > safe.lastpit()) {
447 safe.pit() = safe.lastpit();
448 safe.pos() = safe.lastpos();
451 disp_.screenUpdate(Update::None);
452 disp_.dispatched(false);
454 // restore the previous one because nested Cursor::dispatch calls
455 // are possible which would change it
456 beforeDispatchCursor_ = safe.beforeDispatchCursor_;
460 // NOTE: The code below has been copied to BufferView::dispatch.
461 // If you need to modify this, please update the other one too.
463 // notify insets we just left
465 old.beginUndoGroup();
467 bool badcursor = notifyCursorLeavesOrEnters(old, *this);
470 bv().resetInlineCompletionPos();
477 DispatchResult const & Cursor::result() const
483 BufferView & Cursor::bv() const
492 LBUFERR(depth() >= 1);
497 void Cursor::push(Inset & p)
499 push_back(CursorSlice(p));
500 p.setBuffer(*buffer());
504 void Cursor::pushBackward(Inset & p)
506 LASSERT(!empty(), return);
507 //lyxerr << "Entering inset " << t << " front" << endl;
513 bool Cursor::popBackward()
515 LASSERT(!empty(), return false);
523 bool Cursor::popForward()
525 LASSERT(!empty(), return false);
526 //lyxerr << "Leaving inset from in back" << endl;
527 const pos_type lp = (depth() > 1) ? (*this)[depth() - 2].lastpos() : 0;
531 pos() += lastpos() - lp + 1;
536 int Cursor::currentMode()
538 LASSERT(!empty(), return Inset::UNDECIDED_MODE);
539 for (int i = depth() - 1; i >= 0; --i) {
540 int res = operator[](i).inset().currentMode();
541 bool locked_mode = operator[](i).inset().lockedMode();
542 // Also return UNDECIDED_MODE when the mode is locked,
543 // as in this case it is treated the same as TEXT_MODE
544 if (res != Inset::UNDECIDED_MODE || locked_mode)
547 return Inset::TEXT_MODE;
551 void Cursor::getPos(int & x, int & y) const
553 Point p = bv().getPos(*this);
559 Row const & Cursor::textRow() const
561 CursorSlice const & cs = innerTextSlice();
562 ParagraphMetrics const & pm = bv().parMetrics(cs.text(), cs.pit());
563 return pm.getRow(pos(), boundary());
567 void Cursor::resetAnchor()
570 checkNewWordPosition();
574 void Cursor::markNewWordPosition()
576 if (lyxrc.spellcheck_continuously && inTexted() && new_word_.empty()) {
577 FontSpan nw = locateWord(WHOLE_WORD);
578 if (nw.size() == 1) {
579 LYXERR(Debug::DEBUG, "start new word: "
581 << " pos: " << nw.first);
588 void Cursor::clearNewWordPosition()
590 if (!new_word_.empty()) {
591 LYXERR(Debug::DEBUG, "clear new word: "
593 << " pos: " << pos());
599 void Cursor::checkNewWordPosition()
601 if (!lyxrc.spellcheck_continuously || new_word_.empty())
604 clearNewWordPosition();
606 // forget the position of the current new word if
607 // 1) the paragraph changes or
608 // 2) the count of nested insets changes or
609 // 3) the cursor pos is out of paragraph bound
610 if (pit() != new_word_.pit() ||
611 depth() != new_word_.depth() ||
612 new_word_.pos() > new_word_.lastpos()) {
613 clearNewWordPosition();
614 } else if (new_word_.fixIfBroken())
615 // 4) or the remembered position was "broken"
616 clearNewWordPosition();
618 FontSpan nw = locateWord(WHOLE_WORD);
620 FontSpan ow = new_word_.locateWord(WHOLE_WORD);
621 if (nw.intersect(ow).empty())
622 clearNewWordPosition();
624 LYXERR(Debug::DEBUG, "new word: "
626 << " pos: " << nw.first << ".." << nw.last);
628 clearNewWordPosition();
635 bool Cursor::posBackward()
644 bool Cursor::posForward()
646 if (pos() == lastpos())
653 bool Cursor::posVisRight(bool skip_inset)
655 Cursor new_cur = *this; // where we will move to
656 pos_type left_pos; // position visually left of current cursor
657 pos_type right_pos; // position visually right of current cursor
659 getSurroundingPos(left_pos, right_pos);
661 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
663 // Are we at an inset?
664 new_cur.pos() = right_pos;
665 new_cur.boundary(false);
667 text()->checkAndActivateInsetVisual(new_cur, right_pos >= pos(), false)) {
668 // we actually move the cursor at the end of this
669 // function, for now we just keep track of the new
670 // position in new_cur...
671 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
674 // Are we already at rightmost pos in row?
675 else if (text()->empty() || right_pos == -1) {
678 if (!new_cur.posVisToNewRow(false)) {
679 LYXERR(Debug::RTL, "not moving!");
683 // we actually move the cursor at the end of this
684 // function, for now just keep track of the new
685 // position in new_cur...
686 LYXERR(Debug::RTL, "right edge, moving: " << int(new_cur.pit()) << ","
687 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
690 // normal movement to the right
693 // Recall, if the cursor is at position 'x', that
694 // means *before* the character at position 'x'. In
695 // RTL, "before" means "to the right of", in LTR, "to
696 // the left of". So currently our situation is this:
697 // the position to our right is 'right_pos' (i.e.,
698 // we're currently to the left of 'right_pos'). In
699 // order to move to the right, it depends whether or
700 // not the character at 'right_pos' is RTL.
701 bool const new_pos_is_RTL = paragraph().getFontSettings(
702 buffer()->params(), right_pos).isVisibleRightToLeft();
703 // If the character at 'right_pos' *is* LTR, then in
704 // order to move to the right of it, we need to be
705 // *after* 'right_pos', i.e., move to position
707 if (!new_pos_is_RTL) {
708 new_cur.pos() = right_pos + 1;
709 // set the boundary to true in two situations:
711 // 1. if new_pos is now lastpos, and we're in
712 // an RTL paragraph (this means that we're
713 // moving right to the end of an LTR chunk
714 // which is at the end of an RTL paragraph);
715 (new_cur.pos() == lastpos()
716 && paragraph().isRTL(buffer()->params()))
717 // 2. if the position *after* right_pos is RTL
718 // (we want to be *after* right_pos, not
719 // before right_pos + 1!)
720 || paragraph().getFontSettings(buffer()->params(),
721 new_cur.pos()).isVisibleRightToLeft()
723 new_cur.boundary(true);
724 else // set the boundary to false
725 new_cur.boundary(false);
727 // Otherwise (if the character at position 'right_pos'
728 // is RTL), then moving to the right of it is as easy
729 // as setting the new position to 'right_pos'.
731 new_cur.pos() = right_pos;
732 new_cur.boundary(false);
737 bool moved = (new_cur.pos() != pos()
738 || new_cur.pit() != pit()
739 || new_cur.boundary() != boundary()
740 || &new_cur.inset() != &inset());
743 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
744 << (new_cur.boundary() ? " (boundary)" : ""));
752 bool Cursor::posVisLeft(bool skip_inset)
754 Cursor new_cur = *this; // where we will move to
755 pos_type left_pos; // position visually left of current cursor
756 pos_type right_pos; // position visually right of current cursor
758 getSurroundingPos(left_pos, right_pos);
760 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
762 // Are we at an inset?
763 new_cur.pos() = left_pos;
764 new_cur.boundary(false);
766 text()->checkAndActivateInsetVisual(new_cur, left_pos >= pos(), true)) {
767 // we actually move the cursor at the end of this
768 // function, for now we just keep track of the new
769 // position in new_cur...
770 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
773 // Are we already at leftmost pos in row?
774 else if (text()->empty() || left_pos == -1) {
777 if (!new_cur.posVisToNewRow(true)) {
778 LYXERR(Debug::RTL, "not moving!");
782 // we actually move the cursor at the end of this
783 // function, for now just keep track of the new
784 // position in new_cur...
785 LYXERR(Debug::RTL, "left edge, moving: " << int(new_cur.pit()) << ","
786 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
789 // normal movement to the left
792 // Recall, if the cursor is at position 'x', that
793 // means *before* the character at position 'x'. In
794 // RTL, "before" means "to the right of", in LTR, "to
795 // the left of". So currently our situation is this:
796 // the position to our left is 'left_pos' (i.e., we're
797 // currently to the right of 'left_pos'). In order to
798 // move to the left, it depends whether or not the
799 // character at 'left_pos' is RTL.
800 bool const new_pos_is_RTL = paragraph().getFontSettings(
801 buffer()->params(), left_pos).isVisibleRightToLeft();
802 // If the character at 'left_pos' *is* RTL, then in
803 // order to move to the left of it, we need to be
804 // *after* 'left_pos', i.e., move to position
806 if (new_pos_is_RTL) {
807 new_cur.pos() = left_pos + 1;
808 // set the boundary to true in two situations:
810 // 1. if new_pos is now lastpos and we're in
811 // an LTR paragraph (this means that we're
812 // moving left to the end of an RTL chunk
813 // which is at the end of an LTR paragraph);
814 (new_cur.pos() == lastpos()
815 && !paragraph().isRTL(buffer()->params()))
816 // 2. if the position *after* left_pos is not
817 // RTL (we want to be *after* left_pos, not
818 // before left_pos + 1!)
819 || !paragraph().getFontSettings(buffer()->params(),
820 new_cur.pos()).isVisibleRightToLeft()
822 new_cur.boundary(true);
823 else // set the boundary to false
824 new_cur.boundary(false);
826 // Otherwise (if the character at position 'left_pos'
827 // is LTR), then moving to the left of it is as easy
828 // as setting the new position to 'left_pos'.
830 new_cur.pos() = left_pos;
831 new_cur.boundary(false);
836 bool moved = (new_cur.pos() != pos()
837 || new_cur.pit() != pit()
838 || new_cur.boundary() != boundary());
841 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
842 << (new_cur.boundary() ? " (boundary)" : ""));
852 // Return true on success
853 bool findNonVirtual(Row const & row, Row::const_iterator & cit, bool onleft)
856 while (cit != row.begin() && cit->isVirtual())
859 while (cit != row.end() && cit->isVirtual())
862 return cit != row.end() && !cit->isVirtual();
867 void Cursor::getSurroundingPos(pos_type & left_pos, pos_type & right_pos) const
869 // by default, we know nothing.
873 Row const & row = textRow();
874 TextMetrics const & tm = bv_->textMetrics(text());
876 Row::const_iterator cit = tm.findRowElement(row, pos(), boundary(), dummy);
877 // Handle the case of empty row
878 if (cit == row.end()) {
879 if (paragraph().isRTL(buffer()->params()))
880 right_pos = row.pos();
882 left_pos = row.pos() - 1;
886 // skip virtual elements and exit if no non-virtual one exists
887 if (!findNonVirtual(row, cit, !cit->isRTL()))
890 // if the position is at the left side of the element, we have to
891 // look at the previous element
892 if (pos() == cit->left_pos()) {
893 LYXERR(Debug::RTL, "getSurroundingPos(" << pos() << (boundary() ? "b" : "")
894 << "), AT LEFT of *cit=" << *cit);
895 // this one is easy (see common case below)
896 right_pos = pos() - (cit->isRTL() ? 1 : 0);
897 // at the left of the row
898 if (cit == row.begin())
901 if (!findNonVirtual(row, cit, true))
903 // [...[ is the row element, | is cursor position (! with boundary)
904 // [ 1 2 [ is a ltr row element with pos=1 and endpos=3
905 // ] 2 1] is an rtl row element with pos=1 and endpos=3
906 // [ 1 2 [ [|3 4 [ => (2, 3)
907 // or [ 1 2 [ ]!4 3 ] => (2, 4)
908 // or ] 2 1 ] [|3 4 [ => (1, 3)
909 // or ] 4 3 ] ]!2 1 ] => (3, 2)
910 left_pos = cit->right_pos() - (cit->isRTL() ? 0 : 1);
911 // happens with consecutive row of same direction
912 if (left_pos == right_pos) {
913 left_pos += cit->isRTL() ? 1 : -1;
916 // same code but with the element at the right
917 else if (pos() == cit->right_pos()) {
918 LYXERR(Debug::RTL, "getSurroundingPos(" << pos() << (boundary() ? "b" : "")
919 << "), AT RIGHT of *cit=" << *cit);
920 // this one is easy (see common case below)
921 left_pos = pos() - (cit->isRTL() ? 0 : 1);
922 // at the right of the row
923 if (cit + 1 == row.end())
926 if (!findNonVirtual(row, cit, false))
928 // [ 1 2![ [ 3 4 [ => (2, 3)
929 // or [ 1 2![ ] 4 3 ] => (2, 4)
930 // or ] 2 1|] [ 3 4 [ => (1, 3)
931 // or ] 4 3|] ] 2 1 ] => (3, 2)
932 right_pos = cit->left_pos() - (cit->isRTL() ? 1 : 0);
933 // happens with consecutive row of same direction
934 if (right_pos == left_pos)
935 right_pos += cit->isRTL() ? -1 : 1;
937 // common case: both positions are inside the row element
939 // [ 1 2|3 [ => (2, 3)
940 // or ] 3|2 1 ] => (3, 2)
941 left_pos = pos() - (cit->isRTL() ? 0 : 1);
942 right_pos = pos() - (cit->isRTL() ? 1 : 0);
945 // Note that debug message does not catch all early returns above
946 LYXERR(Debug::RTL,"getSurroundingPos(" << pos() << (boundary() ? "b" : "")
947 << ") => (" << left_pos << ", " << right_pos <<")");
951 bool Cursor::posVisToNewRow(bool movingLeft)
953 Paragraph const & par = paragraph();
954 Buffer const & buf = *buffer();
955 Row const & row = textRow();
956 bool par_is_LTR = !par.isRTL(buf.params());
958 // Inside a table, determining whether to move to the next or
959 // previous row should be done based on the table's direction.
961 if (s >= 1 && (*this)[s].inset().asInsetTabular()) {
962 par_is_LTR = !(*this)[s].inset().asInsetTabular()->isRightToLeft(*this);
963 LYXERR(Debug::RTL, "Inside table! par_is_LTR=" << (par_is_LTR ? 1 : 0));
966 // if moving left in an LTR paragraph or moving right in an
967 // RTL one, move to previous row
968 if (par_is_LTR == movingLeft) {
969 if (row.pos() == 0) { // we're at first row in paragraph
970 if (pit() == 0) // no previous paragraph! don't move
972 // move to last pos in previous par
976 } else { // move to previous row in this par
977 pos() = row.pos() - 1; // this is guaranteed to be in previous row
981 // if moving left in an RTL paragraph or moving right in an
982 // LTR one, move to next row
984 if (row.endpos() == lastpos()) { // we're at last row in paragraph
985 if (pit() == lastpit()) // last paragraph! don't move
987 // move to first row in next par
991 } else { // move to next row in this par
992 pos() = row.endpos();
997 // make sure we're at left-/right-most pos in new row
998 posVisToRowExtremity(!movingLeft);
1004 void Cursor::posVisToRowExtremity(bool left)
1006 LYXERR(Debug::RTL, "entering extremity: " << pit() << "," << pos() << ","
1007 << (boundary() ? 1 : 0));
1009 TextMetrics const & tm = bv_->textMetrics(text());
1010 // Looking for extremities is like clicking on the left or the
1011 // right of the row.
1012 int x = tm.origin().x_ + (left ? 0 : textRow().width());
1014 pos() = tm.getPosNearX(textRow(), x, b);
1017 LYXERR(Debug::RTL, "leaving extremity: " << pit() << "," << pos() << ","
1018 << (boundary() ? 1 : 0));
1022 bool Cursor::reverseDirectionNeeded() const
1025 * We determine the directions based on the direction of the
1026 * bottom() --- i.e., outermost --- paragraph, because that is
1027 * the only way to achieve consistency of the arrow's movements
1028 * within a paragraph, and thus avoid situations in which the
1029 * cursor gets stuck.
1031 return bottom().paragraph().isRTL(bv().buffer().params());
1035 CursorSlice Cursor::normalAnchor() const
1039 // LASSERT: There have been several bugs around this code, that seem
1040 // to involve failures to reset the anchor. We can at least not crash
1041 // in release mode by resetting it ourselves.
1042 LASSERT(anchor_.depth() >= depth(),
1043 const_cast<DocIterator &>(anchor_) = *this);
1045 CursorSlice normal = anchor_[depth() - 1];
1046 if (depth() < anchor_.depth() && top() <= normal) {
1047 // anchor is behind cursor -> move anchor behind the inset
1054 DocIterator & Cursor::realAnchor()
1060 CursorSlice Cursor::selBegin() const
1064 return normalAnchor() < top() ? normalAnchor() : top();
1068 CursorSlice Cursor::selEnd() const
1072 return normalAnchor() > top() ? normalAnchor() : top();
1076 DocIterator Cursor::selectionBegin() const
1082 // FIXME: This is a work-around for the problem that
1083 // CursorSlice doesn't keep track of the boundary.
1084 if (normalAnchor() == top())
1085 di = anchor_.boundary() > boundary() ? anchor_ : *this;
1087 di = normalAnchor() < top() ? anchor_ : *this;
1093 DocIterator Cursor::selectionEnd() const
1099 // FIXME: This is a work-around for the problem that
1100 // CursorSlice doesn't keep track of the boundary.
1101 if (normalAnchor() == top())
1102 di = anchor_.boundary() < boundary() ? anchor_ : *this;
1104 di = normalAnchor() > top() ? anchor_ : *this;
1106 if (di.depth() > depth()) {
1114 void Cursor::setSelection()
1117 if (idx() == normalAnchor().idx() &&
1118 pit() == normalAnchor().pit() &&
1119 pos() == normalAnchor().pos())
1120 setSelection(false);
1124 void Cursor::setSelection(DocIterator const & where, int n)
1133 void Cursor::clearSelection()
1135 setSelection(false);
1136 setWordSelection(false);
1142 void Cursor::setTargetX(int x)
1145 textTargetOffset_ = 0;
1149 int Cursor::x_target() const
1155 void Cursor::clearTargetX()
1158 textTargetOffset_ = 0;
1162 void Cursor::updateTextTargetOffset()
1167 textTargetOffset_ = x - x_target_;
1171 void Cursor::info(odocstream & os) const
1173 for (int i = 1, n = depth(); i < n; ++i) {
1174 operator[](i).inset().infoize(os);
1178 Inset const * inset = prevInset();
1179 // prevInset() can return 0 in certain case.
1181 prevInset()->infoize2(os);
1183 // overwite old message
1188 bool Cursor::selHandle(bool sel)
1190 //lyxerr << "Cursor::selHandle" << endl;
1193 if (sel == selection())
1197 cap::saveSelection(*this);
1206 ///////////////////////////////////////////////////////////////////
1209 // The part below is the non-integrated rest of the original math
1210 // cursor. This should be either generalized for texted or moved
1211 // back to mathed (in most cases to InsetMathNest).
1213 ///////////////////////////////////////////////////////////////////
1215 #include "mathed/InsetMathChar.h"
1216 #include "mathed/InsetMathGrid.h"
1217 #include "mathed/InsetMathScript.h"
1218 #include "mathed/InsetMathUnknown.h"
1219 #include "mathed/MathFactory.h"
1220 #include "mathed/MathStream.h"
1221 #include "mathed/MathSupport.h"
1226 bool Cursor::isInside(Inset const * p) const
1228 for (size_t i = 0; i != depth(); ++i)
1229 if (&operator[](i).inset() == p)
1235 void Cursor::leaveInset(Inset const & inset)
1237 for (size_t i = 0; i != depth(); ++i) {
1238 if (&operator[](i).inset() == &inset) {
1246 bool Cursor::openable(MathAtom const & t) const
1257 // we can't move into anything new during selection
1258 if (depth() >= anchor_.depth())
1260 if (t.nucleus() != &anchor_[depth()].inset())
1267 void Cursor::setScreenPos(int x, int /*y*/)
1270 //bruteFind(*this, x, y, 0, bv().workWidth(), 0, bv().workHeight());
1275 void Cursor::plainErase()
1277 cell().erase(pos());
1281 void Cursor::markInsert()
1283 insert(char_type(0));
1287 void Cursor::markErase()
1289 cell().erase(pos());
1293 void Cursor::plainInsert(MathAtom const & t)
1295 cell().insert(pos(), t);
1297 inset().setBuffer(bv_->buffer());
1299 forceBufferUpdate();
1303 void Cursor::insert(docstring const & str)
1305 for_each(str.begin(), str.end(),
1306 bind(static_cast<void(Cursor::*)(char_type)>
1307 (&Cursor::insert), this, _1));
1311 void Cursor::insert(char_type c)
1313 //lyxerr << "Cursor::insert char '" << c << "'" << endl;
1314 LASSERT(!empty(), return);
1316 cap::selClearOrDel(*this);
1317 insert(new InsetMathChar(c));
1319 text()->insertChar(*this, c);
1324 void Cursor::insert(MathAtom const & t)
1326 //lyxerr << "Cursor::insert MathAtom '" << t << "'" << endl;
1328 cap::selClearOrDel(*this);
1333 void Cursor::insert(Inset * inset0)
1335 LASSERT(inset0, return);
1337 insert(MathAtom(inset0->asInsetMath()));
1339 text()->insertInset(*this, inset0);
1340 inset0->setBuffer(bv_->buffer());
1342 if (inset0->isLabeled())
1343 forceBufferUpdate();
1348 int Cursor::niceInsert(docstring const & t, Parse::flags f, bool enter)
1350 MathData ar(buffer());
1352 if (ar.size() == 1 && (enter || selection()))
1360 void Cursor::niceInsert(MathAtom const & t)
1363 docstring const safe = cap::grabAndEraseSelection(*this);
1365 // If possible, enter the new inset and move the contents of the selection
1366 if (t->isActive()) {
1368 // be careful here: don't use 'pushBackward(t)' as this we need to
1369 // push the clone, not the original
1370 pushBackward(*nextInset());
1371 // We may not use niceInsert here (recursion)
1372 MathData ar(buffer());
1375 } else if (t->asMacro() && !safe.empty()) {
1376 MathData ar(buffer());
1378 docstring const name = t->asMacro()->name();
1379 MacroData const * data = buffer()->getMacro(name);
1380 if (data && data->numargs() - data->optionals() > 0) {
1381 plainInsert(MathAtom(new InsetMathBrace(ar)));
1388 void Cursor::insert(MathData const & ar)
1392 cap::eraseSelection(*this);
1393 cell().insert(pos(), ar);
1395 // FIXME audit setBuffer calls
1396 inset().setBuffer(bv_->buffer());
1400 bool Cursor::backspace()
1403 cap::eraseSelection(*this);
1408 // If empty cell, and not part of a big cell
1409 if (lastpos() == 0 && inset().nargs() == 1) {
1411 // Directly delete empty cell: [|[]] => [|]
1417 // [|], can not delete from inside
1428 if (inMacroMode()) {
1429 InsetMathUnknown * p = activeMacro();
1430 if (p->name().size() > 1) {
1431 p->setName(p->name().substr(0, p->name().size() - 1));
1436 if (pos() != 0 && prevAtom()->nargs() > 0) {
1437 // let's require two backspaces for 'big stuff' and
1438 // highlight on the first
1450 bool Cursor::erase()
1456 cap::eraseSelection(*this);
1460 // delete empty cells if possible
1461 if (pos() == lastpos() && inset().idxDelete(idx()))
1464 // special behaviour when in last position of cell
1465 if (pos() == lastpos()) {
1466 bool one_cell = inset().nargs() == 1;
1467 if (one_cell && lastpos() == 0) {
1469 // Directly delete empty cell: [|[]] => [|]
1475 // [|], can not delete from inside
1480 inset().idxGlue(idx());
1484 // 'clever' UI hack: only erase large items if previously slected
1485 if (pos() != lastpos() && nextAtom()->nargs() > 0) {
1500 DocIterator save = *this;
1501 FuncRequest cmd(selection() ? LFUN_UP_SELECT : LFUN_UP, docstring());
1502 this->dispatch(cmd);
1503 if (disp_.dispatched())
1513 DocIterator save = *this;
1514 FuncRequest cmd(selection() ? LFUN_DOWN_SELECT : LFUN_DOWN, docstring());
1515 this->dispatch(cmd);
1516 if (disp_.dispatched())
1523 bool Cursor::macroModeClose()
1527 InsetMathUnknown * p = activeMacro();
1529 MathData selection(buffer());
1530 asArray(p->selection(), selection);
1531 docstring const s = p->name();
1533 cell().erase(pos());
1535 // do nothing if the macro name is empty
1539 // trigger updates of macros, at least, if no full
1540 // updates take place anyway
1541 screenUpdateFlags(Update::Force);
1543 docstring const name = s.substr(1);
1544 InsetMathNest * const in = inset().asInsetMath()->asNestInset();
1545 if (in && in->interpretString(*this, s))
1547 MathAtom atom = buffer()->getMacro(name, *this, false) ?
1548 MathAtom(new MathMacro(buffer(), name)) : createInsetMath(name, buffer());
1550 // try to put argument into macro, if we just inserted a macro
1551 bool macroArg = false;
1552 MathMacro * atomAsMacro = atom.nucleus()->asMacro();
1554 // macros here are still unfolded (in init mode in fact). So
1555 // we have to resolve the macro here manually and check its arity
1556 // to put the selection behind it if arity > 0.
1557 MacroData const * data = buffer()->getMacro(atomAsMacro->name());
1558 if (!selection.empty() && data && data->numargs() - data->optionals() > 0) {
1560 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 1);
1562 // non-greedy case. Do not touch the arguments behind
1563 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 0);
1566 // insert remembered selection into first argument of a non-macro
1567 else if (atom.nucleus()->nargs() > 0)
1568 atom.nucleus()->cell(0).append(selection);
1572 // finally put the macro argument behind, if needed
1574 if (selection.size() > 1 || selection[0]->asScriptInset())
1575 plainInsert(MathAtom(new InsetMathBrace(selection)));
1584 docstring Cursor::macroName()
1586 return inMacroMode() ? activeMacro()->name() : docstring();
1590 void Cursor::handleNest(MathAtom const & a, int c)
1592 //lyxerr << "Cursor::handleNest: " << c << endl;
1594 asArray(cap::grabAndEraseSelection(*this), t.nucleus()->cell(c));
1597 pushBackward(*nextInset());
1601 int Cursor::targetX() const
1603 if (x_target() != -1)
1612 int Cursor::textTargetOffset() const
1614 return textTargetOffset_;
1618 void Cursor::setTargetX()
1627 bool Cursor::inMacroMode() const
1631 if (pos() == 0 || cell().empty())
1633 InsetMathUnknown const * p = prevAtom()->asUnknownInset();
1634 return p && !p->final();
1638 InsetMathUnknown * Cursor::activeMacro()
1640 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1644 InsetMathUnknown const * Cursor::activeMacro() const
1646 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1650 void Cursor::pullArg()
1653 MathData ar = cell();
1654 if (popBackward() && inMathed()) {
1656 cell().insert(pos(), ar);
1659 //formula()->mutateToText();
1664 void Cursor::touch()
1668 DocIterator::const_iterator it = begin();
1669 DocIterator::const_iterator et = end();
1670 for ( ; it != et; ++it)
1676 void Cursor::normalize()
1678 if (idx() > lastidx()) {
1679 lyxerr << "this should not really happen - 1: "
1680 << idx() << ' ' << nargs()
1681 << " in: " << &inset() << endl;
1685 if (pos() > lastpos()) {
1686 lyxerr << "this should not really happen - 2: "
1687 << pos() << ' ' << lastpos() << " in idx: " << idx()
1689 odocstringstream os;
1690 WriteStream wi(os, false, true, WriteStream::wsDefault);
1691 inset().asInsetMath()->write(wi);
1692 lyxerr << to_utf8(os.str()) << endl;
1698 bool Cursor::upDownInMath(bool up)
1700 // Be warned: The 'logic' implemented in this function is highly
1701 // fragile. A distance of one pixel or a '<' vs '<=' _really
1702 // matters. So fiddle around with it only if you think you know
1703 // what you are doing!
1707 xo = beforeDispatchPosX_;
1709 // check if we had something else in mind, if not, this is the future
1711 if (x_target_ == -1)
1713 else if (inset().asInsetText() && xo - textTargetOffset() != x_target()) {
1714 // In text mode inside the line (not left or right) possibly set a new target_x,
1715 // but only if we are somewhere else than the previous target-offset.
1717 // We want to keep the x-target on subsequent up/down movements
1718 // that cross beyond the end of short lines. Thus a special
1719 // handling when the cursor is at the end of line: Use the new
1720 // x-target only if the old one was before the end of line
1721 // or the old one was after the beginning of the line
1722 bool inRTL = innerParagraph().isRTL(bv().buffer().params());
1726 left = pos() == textRow().endpos();
1727 right = pos() == textRow().pos();
1729 left = pos() == textRow().pos();
1730 right = pos() == textRow().endpos();
1732 if ((!left && !right) ||
1733 (left && !right && xo < x_target_) ||
1734 (!left && right && x_target_ < xo))
1741 // try neigbouring script insets
1743 if (inMathed() && !selection()) {
1746 InsetMathScript const * p = prevAtom()->asScriptInset();
1747 if (p && p->has(up)) {
1749 push(*const_cast<InsetMathScript*>(p));
1750 idx() = p->idxOfScript(up);
1753 // we went in the right direction? Otherwise don't jump into the script
1757 int oy = beforeDispatchPosY_;
1758 if ((!up && y <= oy) ||
1767 if (pos() != lastpos()) {
1768 InsetMathScript const * p = nextAtom()->asScriptInset();
1769 if (p && p->has(up)) {
1770 push(*const_cast<InsetMathScript*>(p));
1771 idx() = p->idxOfScript(up);
1774 // we went in the right direction? Otherwise don't jump into the script
1778 int oy = beforeDispatchPosY_;
1779 if ((!up && y <= oy) ||
1788 // try to find an inset that knows better then we,
1789 if (inset().idxUpDown(*this, up)) {
1790 //lyxerr << "idxUpDown triggered" << endl;
1791 // try to find best position within this inset
1793 setCursor(bruteFind2(*this, xo, yo));
1797 // any improvement going just out of inset?
1798 if (popBackward() && inMathed()) {
1799 //lyxerr << "updown: popBackward succeeded" << endl;
1802 int yold = beforeDispatchPosY_;
1804 if (up ? ynew < yold : ynew > yold)
1808 // no success, we are probably at the document top or bottom
1814 bool Cursor::atFirstOrLastRow(bool up)
1816 TextMetrics const & tm = bv_->textMetrics(text());
1817 ParagraphMetrics const & pm = tm.parMetrics(pit());
1820 if (pos() && boundary())
1821 row = pm.pos2row(pos() - 1);
1823 row = pm.pos2row(pos());
1826 if (pit() == 0 && row == 0)
1829 if (pit() + 1 >= int(text()->paragraphs().size()) &&
1830 row + 1 >= int(pm.rows().size()))
1837 bool Cursor::upDownInText(bool up, bool & updateNeeded)
1839 LASSERT(text(), return false);
1845 xo = beforeDispatchPosX_;
1847 // update the targetX - this is here before the "return false"
1848 // to set a new target which can be used by InsetTexts above
1849 // if we cannot move up/down inside this inset anymore
1850 if (x_target_ == -1)
1852 else if (xo - textTargetOffset() != x_target() &&
1853 depth() == beforeDispatchCursor_.depth()) {
1854 // In text mode inside the line (not left or right)
1855 // possibly set a new target_x, but only if we are
1856 // somewhere else than the previous target-offset.
1858 // We want to keep the x-target on subsequent up/down
1859 // movements that cross beyond the end of short lines.
1860 // Thus a special handling when the cursor is at the
1861 // end of line: Use the new x-target only if the old
1862 // one was before the end of line or the old one was
1863 // after the beginning of the line
1864 bool inRTL = innerParagraph().isRTL(bv().buffer().params());
1868 left = pos() == textRow().endpos();
1869 right = pos() == textRow().pos();
1871 left = pos() == textRow().pos();
1872 right = pos() == textRow().endpos();
1874 if ((!left && !right) ||
1875 (left && !right && xo < x_target_) ||
1876 (!left && right && x_target_ < xo))
1883 // first get the current line
1884 TextMetrics & tm = bv_->textMetrics(text());
1885 ParagraphMetrics const & pm = tm.parMetrics(pit());
1887 if (pos() && boundary())
1888 row = pm.pos2row(pos() - 1);
1890 row = pm.pos2row(pos());
1892 if (atFirstOrLastRow(up)) {
1893 // Is there a place for the cursor to go ? If yes, we
1894 // can execute the DEPM, otherwise we should keep the
1895 // paragraph to host the cursor.
1896 Cursor dummy = *this;
1897 bool valid_destination = false;
1898 for(; dummy.depth(); dummy.pop())
1899 if (!dummy.atFirstOrLastRow(up)) {
1900 valid_destination = true;
1904 // will a next dispatch follow and if there is a new
1905 // dispatch will it move the cursor out ?
1906 if (depth() > 1 && valid_destination) {
1907 // The cursor hasn't changed yet. This happens when
1908 // you e.g. move out of an inset. And to give the
1909 // DEPM the possibility of doing something we must
1910 // provide it with two different cursors. (Lgb, vfr)
1912 dummy.pos() = dummy.pos() == 0 ? dummy.lastpos() : 0;
1913 dummy.pit() = dummy.pit() == 0 ? dummy.lastpit() : 0;
1915 updateNeeded |= bv().checkDepm(dummy, *this);
1916 updateTextTargetOffset();
1918 forceBufferUpdate();
1923 // with and without selection are handled differently
1925 int yo = bv().getPos(*this).y_;
1927 // To next/previous row
1929 tm.editXY(*this, xo, yo - textRow().ascent() - 1);
1931 tm.editXY(*this, xo, yo + textRow().descent() + 1);
1934 // This happens when you move out of an inset.
1935 // And to give the DEPM the possibility of doing
1936 // something we must provide it with two different
1938 Cursor dummy = *this;
1941 if (bv().checkDepm(dummy, old)) {
1942 updateNeeded = true;
1943 // Make sure that cur gets back whatever happened to dummy (Lgb)
1947 // if there is a selection, we stay out of any inset,
1948 // and just jump to the right position:
1954 } else if (pit() > 0) {
1956 TextMetrics & tm = bv_->textMetrics(text());
1957 if (!tm.contains(pit()))
1958 tm.newParMetricsUp();
1959 ParagraphMetrics const & pmcur = tm.parMetrics(pit());
1960 next_row = pmcur.rows().size() - 1;
1963 if (row + 1 < int(pm.rows().size())) {
1965 } else if (pit() + 1 < int(text()->paragraphs().size())) {
1967 TextMetrics & tm = bv_->textMetrics(text());
1968 if (!tm.contains(pit()))
1969 tm.newParMetricsDown();
1974 Row const & real_next_row = tm.parMetrics(pit()).rows()[next_row];
1976 top().pos() = tm.getPosNearX(real_next_row, xo, bound);
1979 updateNeeded |= bv().checkDepm(*this, old);
1983 forceBufferUpdate();
1984 updateTextTargetOffset();
1989 void Cursor::handleFont(string const & font)
1991 LYXERR(Debug::DEBUG, font);
1995 safe = cap::grabAndEraseSelection(*this);
2000 if (lastpos() != 0) {
2001 // something left in the cell
2003 // cursor in first position
2005 } else if (pos() == lastpos()) {
2006 // cursor in last position
2009 // cursor in between. split cell
2010 MathData::iterator bt = cell().begin();
2011 MathAtom at = createInsetMath(from_utf8(font), buffer());
2012 at.nucleus()->cell(0) = MathData(buffer(), bt, bt + pos());
2013 cell().erase(bt, bt + pos());
2018 // nothing left in the cell
2027 void Cursor::message(docstring const & msg) const
2029 disp_.setMessage(msg);
2033 void Cursor::errorMessage(docstring const & msg) const
2035 disp_.setMessage(msg);
2036 disp_.setError(true);
2042 docstring parbreak(Cursor const * cur)
2044 odocstringstream os;
2046 // only add blank line if we're not in a ParbreakIsNewline situation
2047 if (!cur->inset().getLayout().parbreakIsNewline()
2048 && !cur->paragraph().layout().parbreak_is_newline)
2056 docstring Cursor::selectionAsString(bool with_label) const
2062 return cap::grabSelection(*this);
2064 int const label = with_label
2065 ? AS_STR_LABEL | AS_STR_INSETS : AS_STR_INSETS;
2067 idx_type const startidx = selBegin().idx();
2068 idx_type const endidx = selEnd().idx();
2069 if (startidx != endidx) {
2070 // multicell selection
2071 InsetTabular * table = inset().asInsetTabular();
2072 LASSERT(table, return docstring());
2073 return table->asString(startidx, endidx);
2076 ParagraphList const & pars = text()->paragraphs();
2078 pit_type const startpit = selBegin().pit();
2079 pit_type const endpit = selEnd().pit();
2080 size_t const startpos = selBegin().pos();
2081 size_t const endpos = selEnd().pos();
2083 if (startpit == endpit)
2084 return pars[startpit].asString(startpos, endpos, label);
2086 // First paragraph in selection
2087 docstring result = pars[startpit].
2088 asString(startpos, pars[startpit].size(), label)
2091 // The paragraphs in between (if any)
2092 for (pit_type pit = startpit + 1; pit != endpit; ++pit) {
2093 Paragraph const & par = pars[pit];
2094 result += par.asString(0, par.size(), label)
2098 // Last paragraph in selection
2099 result += pars[endpit].asString(0, endpos, label);
2105 docstring Cursor::currentState() const
2108 odocstringstream os;
2114 return text()->currentState(*this);
2120 docstring Cursor::getPossibleLabel() const
2122 return inMathed() ? from_ascii("eq:") : text()->getPossibleLabel(*this);
2126 Encoding const * Cursor::getEncoding() const
2130 CursorSlice const & sl = innerTextSlice();
2131 Text const & text = *sl.text();
2132 Font font = text.getPar(sl.pit()).getFont(
2133 bv().buffer().params(), sl.pos(), text.outerFont(sl.pit()));
2134 return font.language()->encoding();
2138 void Cursor::undispatched() const
2140 disp_.dispatched(false);
2144 void Cursor::dispatched() const
2146 disp_.dispatched(true);
2150 void Cursor::screenUpdateFlags(Update::flags f) const
2152 disp_.screenUpdate(f);
2156 void Cursor::forceBufferUpdate() const
2158 disp_.forceBufferUpdate();
2162 void Cursor::clearBufferUpdate() const
2164 disp_.clearBufferUpdate();
2168 bool Cursor::needBufferUpdate() const
2170 return disp_.needBufferUpdate();
2174 void Cursor::noScreenUpdate() const
2176 disp_.screenUpdate(Update::None);
2180 Font Cursor::getFont() const
2182 // The logic here should more or less match to the
2183 // Cursor::setCurrentFont logic, i.e. the cursor height should
2184 // give a hint what will happen if a character is entered.
2186 // HACK. far from being perfect...
2188 CursorSlice const & sl = innerTextSlice();
2189 Text const & text = *sl.text();
2190 Paragraph const & par = text.getPar(sl.pit());
2192 // on boundary, so we are really at the character before
2193 pos_type pos = sl.pos();
2194 if (pos > 0 && boundary())
2197 // on space? Take the font before (only for RTL boundary stay)
2199 TextMetrics const & tm = bv().textMetrics(&text);
2200 if (pos == sl.lastpos()
2201 || (par.isSeparator(pos)
2202 && !tm.isRTLBoundary(sl.pit(), pos)))
2206 // get font at the position
2207 Font font = par.getFont(buffer()->params(), pos,
2208 text.outerFont(sl.pit()));
2214 bool Cursor::fixIfBroken()
2216 bool const broken_cursor = DocIterator::fixIfBroken();
2217 bool const broken_anchor = anchor_.fixIfBroken();
2219 if (broken_cursor || broken_anchor) {
2220 clearNewWordPosition();
2228 void Cursor::sanitize()
2230 setBuffer(&bv_->buffer());
2231 DocIterator::sanitize();
2239 bool notifyCursorLeavesOrEnters(Cursor const & old, Cursor & cur)
2241 // find inset in common
2243 for (i = 0; i < old.depth() && i < cur.depth(); ++i) {
2244 if (&old[i].inset() != &cur[i].inset())
2248 // update words if we just moved to another paragraph
2249 if (i == old.depth() && i == cur.depth()
2250 && !cur.buffer()->isClean()
2251 && cur.inTexted() && old.inTexted()
2252 && cur.pit() != old.pit()) {
2253 old.paragraph().updateWords();
2256 // notify everything on top of the common part in old cursor,
2257 // but stop if the inset claims the cursor to be invalid now
2258 for (size_type j = i; j < old.depth(); ++j) {
2259 Cursor inset_pos = old;
2260 inset_pos.cutOff(j);
2261 if (old[j].inset().notifyCursorLeaves(inset_pos, cur))
2265 // notify everything on top of the common part in new cursor,
2266 // but stop if the inset claims the cursor to be invalid now
2267 for (; i < cur.depth(); ++i) {
2268 if (cur[i].inset().notifyCursorEnters(cur))
2276 void Cursor::setCurrentFont()
2278 CursorSlice const & cs = innerTextSlice();
2279 Paragraph const & par = cs.paragraph();
2280 pos_type cpit = cs.pit();
2281 pos_type cpos = cs.pos();
2282 Text const & ctext = *cs.text();
2283 TextMetrics const & tm = bv().textMetrics(&ctext);
2285 // are we behind previous char in fact? -> go to that char
2286 if (cpos > 0 && boundary())
2289 // find position to take the font from
2291 // paragraph end? -> font of last char
2292 if (cpos == lastpos())
2294 // on space? -> look at the words in front of space
2295 else if (cpos > 0 && par.isSeparator(cpos)) {
2296 // abc| def -> font of c
2297 // abc |[WERBEH], i.e. boundary==true -> font of c
2298 // abc [WERBEH]| def, font of the space
2299 if (!tm.isRTLBoundary(cpit, cpos))
2305 BufferParams const & bufparams = buffer()->params();
2306 current_font = par.getFontSettings(bufparams, cpos);
2307 real_current_font = tm.displayFont(cpit, cpos);
2309 // special case for paragraph end
2310 if (cs.pos() == lastpos()
2311 && tm.isRTLBoundary(cpit, cs.pos())
2313 Language const * lang = par.getParLanguage(bufparams);
2314 current_font.setLanguage(lang);
2315 current_font.fontInfo().setNumber(FONT_OFF);
2316 real_current_font.setLanguage(lang);
2317 real_current_font.fontInfo().setNumber(FONT_OFF);
2322 bool Cursor::textUndo()
2324 if (!buffer()->undo().textUndo(*this))
2331 bool Cursor::textRedo()
2333 if (!buffer()->undo().textRedo(*this))
2340 void Cursor::finishUndo() const
2342 buffer()->undo().finishUndo();
2346 void Cursor::beginUndoGroup() const
2348 buffer()->undo().beginUndoGroup(*this);
2352 void Cursor::endUndoGroup() const
2354 buffer()->undo().endUndoGroup(*this);
2358 void Cursor::recordUndo(pit_type from, pit_type to) const
2360 buffer()->undo().recordUndo(*this, from, to);
2364 void Cursor::recordUndo(pit_type from) const
2366 buffer()->undo().recordUndo(*this, from, pit());
2370 void Cursor::recordUndo(UndoKind kind) const
2372 buffer()->undo().recordUndo(*this, kind);
2376 void Cursor::recordUndoInset(Inset const * in) const
2378 buffer()->undo().recordUndoInset(*this, in);
2382 void Cursor::recordUndoFullBuffer() const
2384 buffer()->undo().recordUndoFullBuffer(*this);
2388 void Cursor::recordUndoBufferParams() const
2390 buffer()->undo().recordUndoBufferParams(*this);
2394 void Cursor::recordUndoSelection() const
2397 if (cap::multipleCellsSelected(*this))
2402 buffer()->undo().recordUndo(*this,
2403 selBegin().pit(), selEnd().pit());
2408 void Cursor::checkBufferStructure()
2410 Buffer const * master = buffer()->masterBuffer();
2411 master->tocBackend().updateItem(*this);
2412 if (master != buffer() && !master->hasGuiDelegate())
2413 // In case the master has no gui associated with it,
2414 // the TocItem is not updated (part of bug 5699).
2415 buffer()->tocBackend().updateItem(*this);