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 bruteFind(Cursor const & c, int x, int y)
71 double best_dist = numeric_limits<double>::max();
78 et.pos() = et.lastpos();
79 for (size_t i = 0;; ++i) {
82 Inset const * inset = &it.inset();
83 CoordCache::Insets const & insetCache = c.bv().coordCache().getInsets();
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 (!insetCache.has(inset)) {
94 Point const o = insetCache.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) {
119 CursorData::CursorData()
120 : DocIterator(), anchor_(),
121 selection_(false), mark_(false), word_selection_(false),
122 current_font(inherit_font),
123 autocorrect_(false), macromode_(false)
127 CursorData::CursorData(Buffer * buffer)
128 : DocIterator(buffer), anchor_(),
129 selection_(false), mark_(false), word_selection_(false),
130 current_font(inherit_font),
131 autocorrect_(false), macromode_(false)
135 CursorData::CursorData(DocIterator const & dit)
136 : DocIterator(dit), anchor_(),
137 selection_(false), mark_(false), word_selection_(false),
138 current_font(inherit_font),
139 autocorrect_(false), macromode_(false)
145 ostream & operator<<(ostream & os, CursorData const & cur)
147 os << "\n cursor: | anchor:\n";
148 for (size_t i = 0, n = cur.depth(); i != n; ++i) {
149 os << " " << cur[i] << " | ";
150 if (i < cur.anchor_.depth())
151 os << cur.anchor_[i];
153 os << "-------------------------------";
156 for (size_t i = cur.depth(), n = cur.anchor_.depth(); i < n; ++i) {
157 os << "------------------------------- | " << cur.anchor_[i] << "\n";
159 os << " selection: " << cur.selection_
160 // << " x_target: " << cur.x_target_
161 << " boundary: " << cur.boundary() << endl;
166 LyXErr & operator<<(LyXErr & os, CursorData const & cur)
173 // be careful: this is called from the bv's constructor, too, so
174 // bv functions are not yet available!
175 Cursor::Cursor(BufferView & bv)
176 : CursorData(&bv.buffer()), bv_(&bv),
177 x_target_(-1), textTargetOffset_(0),
178 beforeDispatchPosX_(0), beforeDispatchPosY_(0)
185 push_back(CursorSlice(buffer()->inset()));
186 anchor_ = doc_iterator_begin(buffer());
188 new_word_ = doc_iterator_begin(buffer());
196 // this (intentionally) does neither touch anchor nor selection status
197 void Cursor::setCursor(DocIterator const & cur)
199 DocIterator::operator=(cur);
203 void Cursor::setCursorToAnchor()
206 DocIterator normal = anchor_;
207 while (depth() < normal.depth())
209 if (depth() < anchor_.depth() && top() <= anchor_[depth() - 1])
216 void Cursor::setCursorData(CursorData const & data)
218 CursorData::operator=(data);
222 bool Cursor::getStatus(FuncRequest const & cmd, FuncStatus & status) const
226 // Try to fix cursor in case it is broken.
229 // Is this a function that acts on inset at point?
230 Inset * inset = cur.nextInset();
231 if (lyxaction.funcHasFlag(cmd.action(), LyXAction::AtPoint)
232 && inset && inset->getStatus(cur, cmd, status))
235 // This is, of course, a mess. Better create a new doc iterator and use
236 // this in Inset::getStatus. This might require an additional
237 // BufferView * arg, though (which should be avoided)
238 //Cursor safe = *this;
240 for ( ; cur.depth(); cur.pop()) {
241 //lyxerr << "\nCursor::getStatus: cmd: " << cmd << endl << *this << endl;
242 // LASSERT: Is it safe to continue here, or should we return?
243 LASSERT(cur.idx() <= cur.lastidx(), /**/);
244 LASSERT(cur.pit() <= cur.lastpit(), /**/);
245 LASSERT(cur.pos() <= cur.lastpos(), /**/);
247 // The inset's getStatus() will return 'true' if it made
248 // a definitive decision on whether it want to handle the
249 // request or not. The result of this decision is put into
250 // the 'status' parameter.
251 if (cur.inset().getStatus(cur, cmd, status)) {
260 void Cursor::saveBeforeDispatchPosXY()
262 getPos(beforeDispatchPosX_, beforeDispatchPosY_);
266 void Cursor::dispatch(FuncRequest const & cmd0)
268 LYXERR(Debug::ACTION, "Cursor::dispatch: cmd: " << cmd0 << '\n' << *this);
273 FuncRequest cmd = cmd0;
276 disp_ = DispatchResult();
280 // Is this a function that acts on inset at point?
281 if (lyxaction.funcHasFlag(cmd.action(), LyXAction::AtPoint)
283 disp_.dispatched(true);
284 disp_.screenUpdate(Update::FitCursor | Update::Force);
285 FuncRequest tmpcmd = cmd;
286 LYXERR(Debug::DEBUG, "Cursor::dispatch: (AtPoint) cmd: "
287 << cmd0 << endl << *this);
288 nextInset()->dispatch(*this, tmpcmd);
289 if (disp_.dispatched()) {
295 // store some values to be used inside of the handlers
296 beforeDispatchCursor_ = *this;
297 for (; depth(); pop(), boundary(false)) {
298 LYXERR(Debug::DEBUG, "Cursor::dispatch: cmd: "
299 << cmd0 << endl << *this);
301 // In any of these cases, the cursor is invalid, and we should
302 // try to save this document rather than crash.
303 LBUFERR(pos() <= lastpos());
304 LBUFERR(idx() <= lastidx());
305 LBUFERR(pit() <= lastpit());
307 // The common case is 'LFUN handled, need update', so make the
308 // LFUN handler's life easier by assuming this as default value.
309 // The handler can reset the update and val flags if necessary.
310 disp_.screenUpdate(Update::FitCursor | Update::Force);
311 disp_.dispatched(true);
312 inset().dispatch(*this, cmd);
313 if (disp_.dispatched())
317 // it completely to get a 'bomb early' behaviour in case this
318 // object will be used again.
319 if (!disp_.dispatched()) {
320 LYXERR(Debug::DEBUG, "RESTORING OLD CURSOR!");
321 // We might have invalidated the cursor when removing an empty
322 // paragraph while the cursor could not be moved out the inset
323 // while we initially thought we could. This might happen when
324 // a multiline inset becomes an inline inset when the second
325 // paragraph is removed.
326 if (safe.pit() > safe.lastpit()) {
327 safe.pit() = safe.lastpit();
328 safe.pos() = safe.lastpos();
331 disp_.screenUpdate(Update::None);
332 disp_.dispatched(false);
334 // restore the previous one because nested Cursor::dispatch calls
335 // are possible which would change it
336 beforeDispatchCursor_ = safe.beforeDispatchCursor_;
340 // NOTE: The code below has been copied to BufferView::dispatch.
341 // If you need to modify this, please update the other one too.
343 // notify insets we just left
345 old.beginUndoGroup();
347 bool badcursor = notifyCursorLeavesOrEnters(old, *this);
350 bv().resetInlineCompletionPos();
357 DispatchResult const & Cursor::result() const
363 BufferView & Cursor::bv() const
372 LBUFERR(depth() >= 1);
377 void Cursor::push(Inset & p)
379 push_back(CursorSlice(p));
380 p.setBuffer(*buffer());
384 void Cursor::pushBackward(Inset & p)
386 LASSERT(!empty(), return);
387 //lyxerr << "Entering inset " << t << " front" << endl;
393 bool Cursor::popBackward()
395 LASSERT(!empty(), return false);
403 bool Cursor::popForward()
405 LASSERT(!empty(), return false);
406 //lyxerr << "Leaving inset from in back" << endl;
407 const pos_type lp = (depth() > 1) ? (*this)[depth() - 2].lastpos() : 0;
411 pos() += lastpos() - lp + 1;
416 int Cursor::currentMode()
418 LASSERT(!empty(), return Inset::UNDECIDED_MODE);
419 for (int i = depth() - 1; i >= 0; --i) {
420 int res = operator[](i).inset().currentMode();
421 bool locked_mode = operator[](i).inset().lockedMode();
422 // Also return UNDECIDED_MODE when the mode is locked,
423 // as in this case it is treated the same as TEXT_MODE
424 if (res != Inset::UNDECIDED_MODE || locked_mode)
427 return Inset::TEXT_MODE;
431 bool Cursor::inCoordCache() const
433 // the root inset is not in cache, but we do not need it.
436 CoordCache::Insets const & icache = bv_->coordCache().getInsets();
437 for (size_t i = 1 ; i < depth() ; ++i)
438 if (!icache.has(&(*this)[i].inset()))
444 void Cursor::getPos(int & x, int & y) const
446 Point p = bv().getPos(*this);
452 Row const & Cursor::textRow() const
454 CursorSlice const & cs = innerTextSlice();
455 ParagraphMetrics const & pm = bv().parMetrics(cs.text(), cs.pit());
456 return pm.getRow(pos(), boundary());
460 void Cursor::resetAnchor()
463 checkNewWordPosition();
467 void Cursor::markNewWordPosition()
469 if (lyxrc.spellcheck_continuously && inTexted() && new_word_.empty()) {
470 FontSpan nw = locateWord(WHOLE_WORD);
471 if (nw.size() == 1) {
472 LYXERR(Debug::DEBUG, "start new word: "
474 << " pos: " << nw.first);
481 void Cursor::clearNewWordPosition()
483 if (!new_word_.empty()) {
484 LYXERR(Debug::DEBUG, "clear new word: "
486 << " pos: " << pos());
492 void Cursor::checkNewWordPosition()
494 if (!lyxrc.spellcheck_continuously || new_word_.empty())
497 clearNewWordPosition();
499 // forget the position of the current new word if
500 // 1) the paragraph changes or
501 // 2) the count of nested insets changes or
502 // 3) the cursor pos is out of paragraph bound
503 if (pit() != new_word_.pit() ||
504 depth() != new_word_.depth() ||
505 new_word_.pos() > new_word_.lastpos()) {
506 clearNewWordPosition();
507 } else if (new_word_.fixIfBroken())
508 // 4) or the remembered position was "broken"
509 clearNewWordPosition();
511 FontSpan nw = locateWord(WHOLE_WORD);
513 FontSpan ow = new_word_.locateWord(WHOLE_WORD);
514 if (nw.intersect(ow).empty())
515 clearNewWordPosition();
517 LYXERR(Debug::DEBUG, "new word: "
519 << " pos: " << nw.first << ".." << nw.last);
521 clearNewWordPosition();
528 bool Cursor::posBackward()
537 bool Cursor::posForward()
539 if (pos() == lastpos())
546 bool Cursor::posVisRight(bool skip_inset)
548 Cursor new_cur = *this; // where we will move to
549 pos_type left_pos; // position visually left of current cursor
550 pos_type right_pos; // position visually right of current cursor
552 getSurroundingPos(left_pos, right_pos);
554 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
556 // Are we at an inset?
557 new_cur.pos() = right_pos;
558 new_cur.boundary(false);
560 text()->checkAndActivateInsetVisual(new_cur, right_pos >= pos(), false)) {
561 // we actually move the cursor at the end of this
562 // function, for now we just keep track of the new
563 // position in new_cur...
564 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
567 // Are we already at rightmost pos in row?
568 else if (text()->empty() || right_pos == -1) {
571 if (!new_cur.posVisToNewRow(false)) {
572 LYXERR(Debug::RTL, "not moving!");
576 // we actually move the cursor at the end of this
577 // function, for now just keep track of the new
578 // position in new_cur...
579 LYXERR(Debug::RTL, "right edge, moving: " << int(new_cur.pit()) << ","
580 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
583 // normal movement to the right
586 // Recall, if the cursor is at position 'x', that
587 // means *before* the character at position 'x'. In
588 // RTL, "before" means "to the right of", in LTR, "to
589 // the left of". So currently our situation is this:
590 // the position to our right is 'right_pos' (i.e.,
591 // we're currently to the left of 'right_pos'). In
592 // order to move to the right, it depends whether or
593 // not the character at 'right_pos' is RTL.
594 bool const new_pos_is_RTL = paragraph().getFontSettings(
595 buffer()->params(), right_pos).isVisibleRightToLeft();
596 // If the character at 'right_pos' *is* LTR, then in
597 // order to move to the right of it, we need to be
598 // *after* 'right_pos', i.e., move to position
600 if (!new_pos_is_RTL) {
601 new_cur.pos() = right_pos + 1;
602 // set the boundary to true in two situations:
604 // 1. if new_pos is now lastpos, and we're in
605 // an RTL paragraph (this means that we're
606 // moving right to the end of an LTR chunk
607 // which is at the end of an RTL paragraph);
608 (new_cur.pos() == lastpos()
609 && paragraph().isRTL(buffer()->params()))
610 // 2. if the position *after* right_pos is RTL
611 // (we want to be *after* right_pos, not
612 // before right_pos + 1!)
613 || paragraph().getFontSettings(buffer()->params(),
614 new_cur.pos()).isVisibleRightToLeft()
616 new_cur.boundary(true);
617 else // set the boundary to false
618 new_cur.boundary(false);
620 // Otherwise (if the character at position 'right_pos'
621 // is RTL), then moving to the right of it is as easy
622 // as setting the new position to 'right_pos'.
624 new_cur.pos() = right_pos;
625 new_cur.boundary(false);
630 bool const moved = new_cur != *this || new_cur.boundary() != boundary();
633 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
634 << (new_cur.boundary() ? " (boundary)" : ""));
642 bool Cursor::posVisLeft(bool skip_inset)
644 Cursor new_cur = *this; // where we will move to
645 pos_type left_pos; // position visually left of current cursor
646 pos_type right_pos; // position visually right of current cursor
648 getSurroundingPos(left_pos, right_pos);
650 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
652 // Are we at an inset?
653 new_cur.pos() = left_pos;
654 new_cur.boundary(false);
656 text()->checkAndActivateInsetVisual(new_cur, left_pos >= pos(), true)) {
657 // we actually move the cursor at the end of this
658 // function, for now we just keep track of the new
659 // position in new_cur...
660 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
663 // Are we already at leftmost pos in row?
664 else if (text()->empty() || left_pos == -1) {
667 if (!new_cur.posVisToNewRow(true)) {
668 LYXERR(Debug::RTL, "not moving!");
672 // we actually move the cursor at the end of this
673 // function, for now just keep track of the new
674 // position in new_cur...
675 LYXERR(Debug::RTL, "left edge, moving: " << int(new_cur.pit()) << ","
676 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
679 // normal movement to the left
682 // Recall, if the cursor is at position 'x', that
683 // means *before* the character at position 'x'. In
684 // RTL, "before" means "to the right of", in LTR, "to
685 // the left of". So currently our situation is this:
686 // the position to our left is 'left_pos' (i.e., we're
687 // currently to the right of 'left_pos'). In order to
688 // move to the left, it depends whether or not the
689 // character at 'left_pos' is RTL.
690 bool const new_pos_is_RTL = paragraph().getFontSettings(
691 buffer()->params(), left_pos).isVisibleRightToLeft();
692 // If the character at 'left_pos' *is* RTL, then in
693 // order to move to the left of it, we need to be
694 // *after* 'left_pos', i.e., move to position
696 if (new_pos_is_RTL) {
697 new_cur.pos() = left_pos + 1;
698 // set the boundary to true in two situations:
700 // 1. if new_pos is now lastpos and we're in
701 // an LTR paragraph (this means that we're
702 // moving left to the end of an RTL chunk
703 // which is at the end of an LTR paragraph);
704 (new_cur.pos() == lastpos()
705 && !paragraph().isRTL(buffer()->params()))
706 // 2. if the position *after* left_pos is not
707 // RTL (we want to be *after* left_pos, not
708 // before left_pos + 1!)
709 || !paragraph().getFontSettings(buffer()->params(),
710 new_cur.pos()).isVisibleRightToLeft()
712 new_cur.boundary(true);
713 else // set the boundary to false
714 new_cur.boundary(false);
716 // Otherwise (if the character at position 'left_pos'
717 // is LTR), then moving to the left of it is as easy
718 // as setting the new position to 'left_pos'.
720 new_cur.pos() = left_pos;
721 new_cur.boundary(false);
726 bool const moved = new_cur != *this || new_cur.boundary() != boundary();
729 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
730 << (new_cur.boundary() ? " (boundary)" : ""));
740 // Return true on success
741 bool findNonVirtual(Row const & row, Row::const_iterator & cit, bool onleft)
744 while (cit != row.begin() && cit->isVirtual())
747 while (cit != row.end() && cit->isVirtual())
750 return cit != row.end() && !cit->isVirtual();
755 void Cursor::getSurroundingPos(pos_type & left_pos, pos_type & right_pos) const
757 // by default, we know nothing.
761 Row const & row = textRow();
762 TextMetrics const & tm = bv_->textMetrics(text());
764 Row::const_iterator cit = tm.findRowElement(row, pos(), boundary(), dummy);
765 // Handle the case of empty row
766 if (cit == row.end()) {
767 if (paragraph().isRTL(buffer()->params()))
768 right_pos = row.pos();
770 left_pos = row.pos() - 1;
774 // skip virtual elements and exit if no non-virtual one exists
775 if (!findNonVirtual(row, cit, !cit->isRTL()))
778 // if the position is at the left side of the element, we have to
779 // look at the previous element
780 if (pos() == cit->left_pos()) {
781 LYXERR(Debug::RTL, "getSurroundingPos(" << pos() << (boundary() ? "b" : "")
782 << "), AT LEFT of *cit=" << *cit);
783 // this one is easy (see common case below)
784 right_pos = pos() - (cit->isRTL() ? 1 : 0);
785 // at the left of the row
786 if (cit == row.begin())
789 if (!findNonVirtual(row, cit, true))
791 // [...[ is the row element, | is cursor position (! with boundary)
792 // [ 1 2 [ is a ltr row element with pos=1 and endpos=3
793 // ] 2 1] is an rtl row element with pos=1 and endpos=3
794 // [ 1 2 [ [|3 4 [ => (2, 3)
795 // or [ 1 2 [ ]!4 3 ] => (2, 4)
796 // or ] 2 1 ] [|3 4 [ => (1, 3)
797 // or ] 4 3 ] ]!2 1 ] => (3, 2)
798 left_pos = cit->right_pos() - (cit->isRTL() ? 0 : 1);
799 // happens with consecutive row of same direction
800 if (left_pos == right_pos) {
801 left_pos += cit->isRTL() ? 1 : -1;
804 // same code but with the element at the right
805 else if (pos() == cit->right_pos()) {
806 LYXERR(Debug::RTL, "getSurroundingPos(" << pos() << (boundary() ? "b" : "")
807 << "), AT RIGHT of *cit=" << *cit);
808 // this one is easy (see common case below)
809 left_pos = pos() - (cit->isRTL() ? 0 : 1);
810 // at the right of the row
811 if (cit + 1 == row.end())
814 if (!findNonVirtual(row, cit, false))
816 // [ 1 2![ [ 3 4 [ => (2, 3)
817 // or [ 1 2![ ] 4 3 ] => (2, 4)
818 // or ] 2 1|] [ 3 4 [ => (1, 3)
819 // or ] 4 3|] ] 2 1 ] => (3, 2)
820 right_pos = cit->left_pos() - (cit->isRTL() ? 1 : 0);
821 // happens with consecutive row of same direction
822 if (right_pos == left_pos)
823 right_pos += cit->isRTL() ? -1 : 1;
825 // common case: both positions are inside the row element
827 // [ 1 2|3 [ => (2, 3)
828 // or ] 3|2 1 ] => (3, 2)
829 left_pos = pos() - (cit->isRTL() ? 0 : 1);
830 right_pos = pos() - (cit->isRTL() ? 1 : 0);
833 // Note that debug message does not catch all early returns above
834 LYXERR(Debug::RTL,"getSurroundingPos(" << pos() << (boundary() ? "b" : "")
835 << ") => (" << left_pos << ", " << right_pos <<")");
839 bool Cursor::posVisToNewRow(bool movingLeft)
841 Paragraph const & par = paragraph();
842 Buffer const & buf = *buffer();
843 Row const & row = textRow();
844 bool par_is_LTR = !par.isRTL(buf.params());
846 // Inside a table, determining whether to move to the next or
847 // previous row should be done based on the table's direction.
848 if (inset().asInsetTabular()) {
849 par_is_LTR = !inset().asInsetTabular()->isRightToLeft(*this);
850 LYXERR(Debug::RTL, "Inside table! par_is_LTR=" << (par_is_LTR ? 1 : 0));
853 // if moving left in an LTR paragraph or moving right in an
854 // RTL one, move to previous row
855 if (par_is_LTR == movingLeft) {
856 if (row.pos() == 0) { // we're at first row in paragraph
857 if (pit() == 0) // no previous paragraph! don't move
859 // move to last pos in previous par
863 } else { // move to previous row in this par
864 pos() = row.pos() - 1; // this is guaranteed to be in previous row
868 // if moving left in an RTL paragraph or moving right in an
869 // LTR one, move to next row
871 if (row.endpos() == lastpos()) { // we're at last row in paragraph
872 if (pit() == lastpit()) // last paragraph! don't move
874 // move to first row in next par
878 } else { // move to next row in this par
879 pos() = row.endpos();
884 // make sure we're at left-/right-most pos in new row
885 posVisToRowExtremity(!movingLeft);
891 void Cursor::posVisToRowExtremity(bool left)
893 LYXERR(Debug::RTL, "entering extremity: " << pit() << "," << pos() << ","
894 << (boundary() ? 1 : 0));
896 TextMetrics const & tm = bv_->textMetrics(text());
897 // Looking for extremities is like clicking on the left or the
899 int x = tm.origin().x_ + (left ? 0 : textRow().width());
901 pos() = tm.getPosNearX(textRow(), x, b);
904 LYXERR(Debug::RTL, "leaving extremity: " << pit() << "," << pos() << ","
905 << (boundary() ? 1 : 0));
909 bool Cursor::reverseDirectionNeeded() const
912 * We determine the directions based on the direction of the
913 * bottom() --- i.e., outermost --- paragraph, because that is
914 * the only way to achieve consistency of the arrow's movements
915 * within a paragraph, and thus avoid situations in which the
918 return bottom().paragraph().isRTL(bv().buffer().params());
922 CursorSlice Cursor::normalAnchor() const
926 // LASSERT: There have been several bugs around this code, that seem
927 // to involve failures to reset the anchor. We can at least not crash
928 // in release mode by resetting it ourselves.
929 if (anchor_.depth() < depth()) {
930 LYXERR0("Cursor is deeper than anchor. PLEASE REPORT.\nCursor is"
932 const_cast<DocIterator &>(anchor_) = *this;
935 CursorSlice normal = anchor_[depth() - 1];
936 if (depth() < anchor_.depth() && top() <= normal) {
937 // anchor is behind cursor -> move anchor behind the inset
944 CursorSlice Cursor::selBegin() const
948 return normalAnchor() < top() ? normalAnchor() : top();
952 CursorSlice Cursor::selEnd() const
956 return normalAnchor() > top() ? normalAnchor() : top();
960 DocIterator Cursor::selectionBegin() const
966 // FIXME: This is a work-around for the problem that
967 // CursorSlice doesn't keep track of the boundary.
968 if (normalAnchor() == top())
969 di = anchor_.boundary() > boundary() ? anchor_ : *this;
971 di = normalAnchor() < top() ? anchor_ : *this;
977 DocIterator Cursor::selectionEnd() const
983 // FIXME: This is a work-around for the problem that
984 // CursorSlice doesn't keep track of the boundary.
985 if (normalAnchor() == top())
986 di = anchor_.boundary() < boundary() ? anchor_ : *this;
988 di = normalAnchor() > top() ? anchor_ : *this;
990 if (di.depth() > depth()) {
998 void Cursor::setSelection()
1001 if (idx() == normalAnchor().idx() &&
1002 pit() == normalAnchor().pit() &&
1003 pos() == normalAnchor().pos())
1008 void Cursor::setSelection(DocIterator const & where, int n)
1017 void Cursor::clearSelection()
1020 setWordSelection(false);
1026 void Cursor::setTargetX(int x)
1029 textTargetOffset_ = 0;
1033 int Cursor::x_target() const
1039 void Cursor::clearTargetX()
1042 textTargetOffset_ = 0;
1046 void Cursor::updateTextTargetOffset()
1051 textTargetOffset_ = x - x_target_;
1055 void Cursor::info(odocstream & os) const
1057 for (int i = 1, n = depth(); i < n; ++i) {
1058 operator[](i).inset().infoize(os);
1062 Inset const * inset = prevInset();
1063 // prevInset() can return 0 in certain case.
1065 prevInset()->infoize2(os);
1070 bool Cursor::selHandle(bool sel)
1072 //lyxerr << "Cursor::selHandle" << endl;
1075 if (sel == selection())
1079 cap::saveSelection(*this);
1088 ///////////////////////////////////////////////////////////////////
1091 // The part below is the non-integrated rest of the original math
1092 // cursor. This should be either generalized for texted or moved
1093 // back to mathed (in most cases to InsetMathNest).
1095 ///////////////////////////////////////////////////////////////////
1097 #include "mathed/InsetMathChar.h"
1098 #include "mathed/InsetMathGrid.h"
1099 #include "mathed/InsetMathScript.h"
1100 #include "mathed/InsetMathUnknown.h"
1101 #include "mathed/MathFactory.h"
1102 #include "mathed/MathStream.h"
1103 #include "mathed/MathSupport.h"
1108 bool Cursor::isInside(Inset const * p) const
1110 for (size_t i = 0; i != depth(); ++i)
1111 if (&operator[](i).inset() == p)
1117 void Cursor::leaveInset(Inset const & inset)
1119 for (size_t i = 0; i != depth(); ++i) {
1120 if (&operator[](i).inset() == &inset) {
1128 bool Cursor::openable(MathAtom const & t) const
1139 // we can't move into anything new during selection
1140 if (depth() >= anchor_.depth())
1142 if (t.nucleus() != &anchor_[depth()].inset())
1149 void Cursor::setScreenPos(int x, int /*y*/)
1152 //bruteFind(*this, x, y, 0, bv().workWidth(), 0, bv().workHeight());
1157 void Cursor::plainErase()
1159 cell().erase(pos());
1163 void Cursor::markInsert()
1165 insert(char_type(0));
1169 void Cursor::markErase()
1171 cell().erase(pos());
1175 void Cursor::plainInsert(MathAtom const & t)
1177 cell().insert(pos(), t);
1179 inset().setBuffer(bv_->buffer());
1181 checkBufferStructure();
1185 void Cursor::insert(docstring const & str)
1187 for_each(str.begin(), str.end(),
1188 bind(static_cast<void(Cursor::*)(char_type)>
1189 (&Cursor::insert), this, _1));
1193 void Cursor::insert(char_type c)
1195 //lyxerr << "Cursor::insert char '" << c << "'" << endl;
1196 LASSERT(!empty(), return);
1198 cap::selClearOrDel(*this);
1199 insert(new InsetMathChar(c));
1201 text()->insertChar(*this, c);
1206 void Cursor::insert(MathAtom const & t)
1208 //lyxerr << "Cursor::insert MathAtom '" << t << "'" << endl;
1210 cap::selClearOrDel(*this);
1215 void Cursor::insert(Inset * inset0)
1217 LASSERT(inset0, return);
1219 insert(MathAtom(inset0->asInsetMath()));
1221 text()->insertInset(*this, inset0);
1222 inset0->setBuffer(bv_->buffer());
1224 if (inset0->isLabeled())
1225 forceBufferUpdate();
1230 int Cursor::niceInsert(docstring const & t, Parse::flags f, bool enter)
1232 MathData ar(buffer());
1234 if (ar.size() == 1 && (enter || selection()))
1242 void Cursor::niceInsert(MathAtom const & t)
1245 docstring const safe = cap::grabAndEraseSelection(*this);
1247 // If possible, enter the new inset and move the contents of the selection
1248 if (t->isActive()) {
1250 // be careful here: don't use 'pushBackward(t)' as this we need to
1251 // push the clone, not the original
1252 pushBackward(*nextInset());
1253 // We may not use niceInsert here (recursion)
1254 MathData ar(buffer());
1257 } else if (t->asMacro() && !safe.empty()) {
1258 MathData ar(buffer());
1260 docstring const name = t->asMacro()->name();
1261 MacroData const * data = buffer()->getMacro(name);
1262 if (data && data->numargs() - data->optionals() > 0) {
1263 plainInsert(MathAtom(new InsetMathBrace(ar)));
1270 void Cursor::insert(MathData const & ar)
1274 cap::eraseSelection(*this);
1275 cell().insert(pos(), ar);
1277 // FIXME audit setBuffer calls
1278 inset().setBuffer(bv_->buffer());
1282 bool Cursor::backspace()
1285 cap::eraseSelection(*this);
1290 // If empty cell, and not part of a big cell
1291 if (lastpos() == 0 && inset().nargs() == 1) {
1293 // Directly delete empty cell: [|[]] => [|]
1299 // [|], can not delete from inside
1310 if (inMacroMode()) {
1311 InsetMathUnknown * p = activeMacro();
1312 if (p->name().size() > 1) {
1313 p->setName(p->name().substr(0, p->name().size() - 1));
1318 if (pos() != 0 && prevAtom()->nargs() > 0) {
1319 // let's require two backspaces for 'big stuff' and
1320 // highlight on the first
1332 bool Cursor::erase()
1338 cap::eraseSelection(*this);
1342 // delete empty cells if possible
1343 if (pos() == lastpos() && inset().idxDelete(idx()))
1346 // special behaviour when in last position of cell
1347 if (pos() == lastpos()) {
1348 bool one_cell = inset().nargs() == 1;
1349 if (one_cell && lastpos() == 0) {
1351 // Directly delete empty cell: [|[]] => [|]
1357 // [|], can not delete from inside
1362 inset().idxGlue(idx());
1366 // 'clever' UI hack: only erase large items if previously slected
1367 if (pos() != lastpos() && nextAtom()->nargs() > 0) {
1382 DocIterator save = *this;
1383 FuncRequest cmd(selection() ? LFUN_UP_SELECT : LFUN_UP, docstring());
1384 this->dispatch(cmd);
1385 if (disp_.dispatched())
1395 DocIterator save = *this;
1396 FuncRequest cmd(selection() ? LFUN_DOWN_SELECT : LFUN_DOWN, docstring());
1397 this->dispatch(cmd);
1398 if (disp_.dispatched())
1405 bool Cursor::macroModeClose()
1409 InsetMathUnknown * p = activeMacro();
1411 MathData selection(buffer());
1412 asArray(p->selection(), selection);
1413 docstring const s = p->name();
1415 cell().erase(pos());
1417 // do nothing if the macro name is empty
1421 // trigger updates of macros, at least, if no full
1422 // updates take place anyway
1423 screenUpdateFlags(Update::Force);
1425 docstring const name = s.substr(1);
1426 InsetMathNest * const in = inset().asInsetMath()->asNestInset();
1427 if (in && in->interpretString(*this, s))
1429 MathAtom atom = buffer()->getMacro(name, *this, false) ?
1430 MathAtom(new MathMacro(buffer(), name)) : createInsetMath(name, buffer());
1432 // try to put argument into macro, if we just inserted a macro
1433 bool macroArg = false;
1434 MathMacro * atomAsMacro = atom.nucleus()->asMacro();
1436 // macros here are still unfolded (in init mode in fact). So
1437 // we have to resolve the macro here manually and check its arity
1438 // to put the selection behind it if arity > 0.
1439 MacroData const * data = buffer()->getMacro(atomAsMacro->name());
1440 if (!selection.empty() && data && data->numargs() - data->optionals() > 0) {
1442 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 1);
1444 // non-greedy case. Do not touch the arguments behind
1445 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 0);
1448 // insert remembered selection into first argument of a non-macro
1449 else if (atom.nucleus()->nargs() > 0)
1450 atom.nucleus()->cell(0).append(selection);
1454 // finally put the macro argument behind, if needed
1456 if (selection.size() > 1 || selection[0]->asScriptInset())
1457 plainInsert(MathAtom(new InsetMathBrace(selection)));
1466 docstring Cursor::macroName()
1468 return inMacroMode() ? activeMacro()->name() : docstring();
1472 void Cursor::handleNest(MathAtom const & a, int c)
1474 //lyxerr << "Cursor::handleNest: " << c << endl;
1476 asArray(cap::grabAndEraseSelection(*this), t.nucleus()->cell(c));
1479 pushBackward(*nextInset());
1483 int Cursor::targetX() const
1485 if (x_target() != -1)
1494 int Cursor::textTargetOffset() const
1496 return textTargetOffset_;
1500 void Cursor::setTargetX()
1509 bool Cursor::inMacroMode() const
1513 if (pos() == 0 || cell().empty())
1515 InsetMathUnknown const * p = prevAtom()->asUnknownInset();
1516 return p && !p->final();
1520 InsetMathUnknown * Cursor::activeMacro()
1522 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1526 InsetMathUnknown const * Cursor::activeMacro() const
1528 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1532 void Cursor::pullArg()
1535 MathData ar = cell();
1536 if (popBackward() && inMathed()) {
1538 cell().insert(pos(), ar);
1541 //formula()->mutateToText();
1546 void Cursor::touch()
1550 DocIterator::const_iterator it = begin();
1551 DocIterator::const_iterator et = end();
1552 for ( ; it != et; ++it)
1558 void Cursor::normalize()
1560 if (idx() > lastidx()) {
1561 lyxerr << "this should not really happen - 1: "
1562 << idx() << ' ' << nargs()
1563 << " in: " << &inset() << endl;
1567 if (pos() > lastpos()) {
1568 lyxerr << "this should not really happen - 2: "
1569 << pos() << ' ' << lastpos() << " in idx: " << idx()
1571 odocstringstream os;
1572 TexRow texrow(false);
1573 otexrowstream ots(os,texrow);
1574 WriteStream wi(ots, false, true, WriteStream::wsDefault);
1575 inset().asInsetMath()->write(wi);
1576 lyxerr << to_utf8(os.str()) << endl;
1582 bool Cursor::upDownInMath(bool up)
1584 // Be warned: The 'logic' implemented in this function is highly
1585 // fragile. A distance of one pixel or a '<' vs '<=' _really
1586 // matters. So fiddle around with it only if you think you know
1587 // what you are doing!
1591 xo = beforeDispatchPosX_;
1593 // check if we had something else in mind, if not, this is the future
1595 if (x_target_ == -1)
1597 else if (inset().asInsetText() && xo - textTargetOffset() != x_target()) {
1598 // In text mode inside the line (not left or right) possibly set a new target_x,
1599 // but only if we are somewhere else than the previous target-offset.
1601 // We want to keep the x-target on subsequent up/down movements
1602 // that cross beyond the end of short lines. Thus a special
1603 // handling when the cursor is at the end of line: Use the new
1604 // x-target only if the old one was before the end of line
1605 // or the old one was after the beginning of the line
1606 bool inRTL = innerParagraph().isRTL(bv().buffer().params());
1610 left = pos() == textRow().endpos();
1611 right = pos() == textRow().pos();
1613 left = pos() == textRow().pos();
1614 right = pos() == textRow().endpos();
1616 if ((!left && !right) ||
1617 (left && !right && xo < x_target_) ||
1618 (!left && right && x_target_ < xo))
1625 // try neigbouring script insets
1627 if (inMathed() && !selection()) {
1630 InsetMathScript const * p = prevAtom()->asScriptInset();
1631 if (p && p->has(up)) {
1633 push(*const_cast<InsetMathScript*>(p));
1634 idx() = p->idxOfScript(up);
1637 // we went in the right direction? Otherwise don't jump into the script
1641 int oy = beforeDispatchPosY_;
1642 if ((!up && y <= oy) ||
1651 if (pos() != lastpos()) {
1652 InsetMathScript const * p = nextAtom()->asScriptInset();
1653 if (p && p->has(up)) {
1654 push(*const_cast<InsetMathScript*>(p));
1655 idx() = p->idxOfScript(up);
1658 // we went in the right direction? Otherwise don't jump into the script
1662 int oy = beforeDispatchPosY_;
1663 if ((!up && y <= oy) ||
1672 // try to find an inset that knows better then we,
1673 if (inset().idxUpDown(*this, up)) {
1674 //lyxerr << "idxUpDown triggered" << endl;
1675 // try to find best position within this inset
1677 setCursor(bruteFind(*this, xo, yo));
1681 // any improvement going just out of inset?
1682 if (popBackward() && inMathed()) {
1683 //lyxerr << "updown: popBackward succeeded" << endl;
1686 int yold = beforeDispatchPosY_;
1688 if (up ? ynew < yold : ynew > yold)
1692 // no success, we are probably at the document top or bottom
1698 bool Cursor::atFirstOrLastRow(bool up)
1700 TextMetrics const & tm = bv_->textMetrics(text());
1701 ParagraphMetrics const & pm = tm.parMetrics(pit());
1704 if (pos() && boundary())
1705 row = pm.pos2row(pos() - 1);
1707 row = pm.pos2row(pos());
1710 if (pit() == 0 && row == 0)
1713 if (pit() + 1 >= int(text()->paragraphs().size()) &&
1714 row + 1 >= int(pm.rows().size()))
1721 bool Cursor::upDownInText(bool up, bool & updateNeeded)
1723 LASSERT(text(), return false);
1729 xo = beforeDispatchPosX_;
1731 // update the targetX - this is here before the "return false"
1732 // to set a new target which can be used by InsetTexts above
1733 // if we cannot move up/down inside this inset anymore
1734 if (x_target_ == -1)
1736 else if (xo - textTargetOffset() != x_target() &&
1737 depth() == beforeDispatchCursor_.depth()) {
1738 // In text mode inside the line (not left or right)
1739 // possibly set a new target_x, but only if we are
1740 // somewhere else than the previous target-offset.
1742 // We want to keep the x-target on subsequent up/down
1743 // movements that cross beyond the end of short lines.
1744 // Thus a special handling when the cursor is at the
1745 // end of line: Use the new x-target only if the old
1746 // one was before the end of line or the old one was
1747 // after the beginning of the line
1748 bool inRTL = innerParagraph().isRTL(bv().buffer().params());
1752 left = pos() == textRow().endpos();
1753 right = pos() == textRow().pos();
1755 left = pos() == textRow().pos();
1756 right = pos() == textRow().endpos();
1758 if ((!left && !right) ||
1759 (left && !right && xo < x_target_) ||
1760 (!left && right && x_target_ < xo))
1767 // first get the current line
1768 TextMetrics & tm = bv_->textMetrics(text());
1769 ParagraphMetrics const & pm = tm.parMetrics(pit());
1771 if (pos() && boundary())
1772 row = pm.pos2row(pos() - 1);
1774 row = pm.pos2row(pos());
1776 if (atFirstOrLastRow(up)) {
1777 // Is there a place for the cursor to go ? If yes, we
1778 // can execute the DEPM, otherwise we should keep the
1779 // paragraph to host the cursor.
1780 Cursor dummy = *this;
1781 bool valid_destination = false;
1782 for(; dummy.depth(); dummy.pop())
1783 if (!dummy.atFirstOrLastRow(up)) {
1784 valid_destination = true;
1788 // will a next dispatch follow and if there is a new
1789 // dispatch will it move the cursor out ?
1790 if (depth() > 1 && valid_destination) {
1791 // The cursor hasn't changed yet. This happens when
1792 // you e.g. move out of an inset. And to give the
1793 // DEPM the possibility of doing something we must
1794 // provide it with two different cursors. (Lgb, vfr)
1796 dummy.pos() = dummy.pos() == 0 ? dummy.lastpos() : 0;
1797 dummy.pit() = dummy.pit() == 0 ? dummy.lastpit() : 0;
1799 updateNeeded |= bv().checkDepm(dummy, *this);
1800 updateTextTargetOffset();
1802 forceBufferUpdate();
1807 // with and without selection are handled differently
1809 int yo = bv().getPos(*this).y_;
1811 // To next/previous row
1813 tm.editXY(*this, xo, yo - textRow().ascent() - 1);
1815 tm.editXY(*this, xo, yo + textRow().descent() + 1);
1818 // This happens when you move out of an inset.
1819 // And to give the DEPM the possibility of doing
1820 // something we must provide it with two different
1822 Cursor dummy = *this;
1825 if (bv().checkDepm(dummy, old)) {
1826 updateNeeded = true;
1827 // Make sure that cur gets back whatever happened to dummy (Lgb)
1830 if (inTexted() && pos() && paragraph().isEnvSeparator(pos() - 1))
1833 // if there is a selection, we stay out of any inset,
1834 // and just jump to the right position:
1840 } else if (pit() > 0) {
1842 TextMetrics & tm = bv_->textMetrics(text());
1843 if (!tm.contains(pit()))
1844 tm.newParMetricsUp();
1845 ParagraphMetrics const & pmcur = tm.parMetrics(pit());
1846 next_row = pmcur.rows().size() - 1;
1849 if (row + 1 < int(pm.rows().size())) {
1851 } else if (pit() + 1 < int(text()->paragraphs().size())) {
1853 TextMetrics & tm = bv_->textMetrics(text());
1854 if (!tm.contains(pit()))
1855 tm.newParMetricsDown();
1860 Row const & real_next_row = tm.parMetrics(pit()).rows()[next_row];
1862 top().pos() = tm.getPosNearX(real_next_row, xo, bound);
1865 updateNeeded |= bv().checkDepm(*this, old);
1869 forceBufferUpdate();
1870 updateTextTargetOffset();
1875 void Cursor::handleFont(string const & font)
1877 LYXERR(Debug::DEBUG, font);
1881 safe = cap::grabAndEraseSelection(*this);
1886 if (lastpos() != 0) {
1887 // something left in the cell
1889 // cursor in first position
1891 } else if (pos() == lastpos()) {
1892 // cursor in last position
1895 // cursor in between. split cell
1896 MathData::iterator bt = cell().begin();
1897 MathAtom at = createInsetMath(from_utf8(font), buffer());
1898 at.nucleus()->cell(0) = MathData(buffer(), bt, bt + pos());
1899 cell().erase(bt, bt + pos());
1904 // nothing left in the cell
1913 void Cursor::message(docstring const & msg) const
1915 disp_.setMessage(msg);
1919 void Cursor::errorMessage(docstring const & msg) const
1921 disp_.setMessage(msg);
1922 disp_.setError(true);
1928 docstring parbreak(Cursor const * cur)
1930 odocstringstream os;
1932 // only add blank line if we're not in a ParbreakIsNewline situation
1933 if (!cur->inset().getLayout().parbreakIsNewline()
1934 && !cur->paragraph().layout().parbreak_is_newline)
1942 docstring Cursor::selectionAsString(bool with_label) const
1948 return cap::grabSelection(*this);
1950 int const label = with_label
1951 ? AS_STR_LABEL | AS_STR_INSETS : AS_STR_INSETS;
1953 idx_type const startidx = selBegin().idx();
1954 idx_type const endidx = selEnd().idx();
1955 if (startidx != endidx) {
1956 // multicell selection
1957 InsetTabular * table = inset().asInsetTabular();
1958 LASSERT(table, return docstring());
1959 return table->asString(startidx, endidx);
1962 ParagraphList const & pars = text()->paragraphs();
1964 pit_type const startpit = selBegin().pit();
1965 pit_type const endpit = selEnd().pit();
1966 size_t const startpos = selBegin().pos();
1967 size_t const endpos = selEnd().pos();
1969 if (startpit == endpit)
1970 return pars[startpit].asString(startpos, endpos, label);
1972 // First paragraph in selection
1973 docstring result = pars[startpit].
1974 asString(startpos, pars[startpit].size(), label)
1977 // The paragraphs in between (if any)
1978 for (pit_type pit = startpit + 1; pit != endpit; ++pit) {
1979 Paragraph const & par = pars[pit];
1980 result += par.asString(0, par.size(), label)
1984 // Last paragraph in selection
1985 result += pars[endpit].asString(0, endpos, label);
1991 docstring Cursor::currentState() const
1994 odocstringstream os;
1996 #ifdef DEVEL_VERSION
1997 InsetMath * math = inset().asInsetMath();
1999 os << _(", Inset: ") << math->id();
2000 os << _(", Cell: ") << idx();
2001 os << _(", Position: ") << pos();
2007 return text()->currentState(*this);
2013 docstring Cursor::getPossibleLabel() const
2015 return inMathed() ? from_ascii("eq:") : text()->getPossibleLabel(*this);
2019 Encoding const * Cursor::getEncoding() const
2023 CursorSlice const & sl = innerTextSlice();
2024 Text const & text = *sl.text();
2025 Font font = text.getPar(sl.pit()).getFont(
2026 bv().buffer().params(), sl.pos(), text.outerFont(sl.pit()));
2027 return font.language()->encoding();
2031 void Cursor::undispatched() const
2033 disp_.dispatched(false);
2037 void Cursor::dispatched() const
2039 disp_.dispatched(true);
2043 void Cursor::screenUpdateFlags(Update::flags f) const
2045 disp_.screenUpdate(f);
2049 void Cursor::forceBufferUpdate() const
2051 disp_.forceBufferUpdate();
2055 void Cursor::clearBufferUpdate() const
2057 disp_.clearBufferUpdate();
2061 bool Cursor::needBufferUpdate() const
2063 return disp_.needBufferUpdate();
2067 void Cursor::noScreenUpdate() const
2069 disp_.screenUpdate(Update::None);
2073 Font Cursor::getFont() const
2075 // The logic here should more or less match to the
2076 // Cursor::setCurrentFont logic, i.e. the cursor height should
2077 // give a hint what will happen if a character is entered.
2079 // HACK. far from being perfect...
2081 CursorSlice const & sl = innerTextSlice();
2082 Text const & text = *sl.text();
2083 Paragraph const & par = text.getPar(sl.pit());
2085 // on boundary, so we are really at the character before
2086 pos_type pos = sl.pos();
2087 if (pos > 0 && boundary())
2090 // on space? Take the font before (only for RTL boundary stay)
2092 TextMetrics const & tm = bv().textMetrics(&text);
2093 if (pos == sl.lastpos()
2094 || (par.isSeparator(pos)
2095 && !tm.isRTLBoundary(sl.pit(), pos)))
2099 // get font at the position
2100 Font font = par.getFont(buffer()->params(), pos,
2101 text.outerFont(sl.pit()));
2107 bool Cursor::fixIfBroken()
2109 bool const broken_cursor = DocIterator::fixIfBroken();
2110 bool const broken_anchor = anchor_.fixIfBroken();
2112 if (broken_cursor || broken_anchor) {
2113 clearNewWordPosition();
2121 void Cursor::sanitize()
2123 setBuffer(&bv_->buffer());
2124 DocIterator::sanitize();
2132 bool notifyCursorLeavesOrEnters(Cursor const & old, Cursor & cur)
2134 // find inset in common
2136 for (i = 0; i < old.depth() && i < cur.depth(); ++i) {
2137 if (&old[i].inset() != &cur[i].inset())
2141 // update words if we just moved to another paragraph
2142 if (i == old.depth() && i == cur.depth()
2143 && !cur.buffer()->isClean()
2144 && cur.inTexted() && old.inTexted()
2145 && cur.pit() != old.pit()) {
2146 old.paragraph().updateWords();
2149 // notify everything on top of the common part in old cursor,
2150 // but stop if the inset claims the cursor to be invalid now
2151 for (size_type j = i; j < old.depth(); ++j) {
2152 Cursor inset_pos = old;
2153 inset_pos.cutOff(j);
2154 if (old[j].inset().notifyCursorLeaves(inset_pos, cur))
2158 // notify everything on top of the common part in new cursor,
2159 // but stop if the inset claims the cursor to be invalid now
2160 for (; i < cur.depth(); ++i) {
2161 if (cur[i].inset().notifyCursorEnters(cur))
2169 void Cursor::setCurrentFont()
2171 CursorSlice const & cs = innerTextSlice();
2172 Paragraph const & par = cs.paragraph();
2173 pos_type cpit = cs.pit();
2174 pos_type cpos = cs.pos();
2175 Text const & ctext = *cs.text();
2176 TextMetrics const & tm = bv().textMetrics(&ctext);
2178 // are we behind previous char in fact? -> go to that char
2179 if (cpos > 0 && boundary())
2182 // find position to take the font from
2184 // paragraph end? -> font of last char
2185 if (cpos == lastpos())
2187 // on space? -> look at the words in front of space
2188 else if (cpos > 0 && par.isSeparator(cpos)) {
2189 // abc| def -> font of c
2190 // abc |[WERBEH], i.e. boundary==true -> font of c
2191 // abc [WERBEH]| def, font of the space
2192 if (!tm.isRTLBoundary(cpit, cpos))
2198 BufferParams const & bufparams = buffer()->params();
2199 current_font = par.getFontSettings(bufparams, cpos);
2200 real_current_font = tm.displayFont(cpit, cpos);
2202 // special case for paragraph end
2203 if (cs.pos() == lastpos()
2204 && tm.isRTLBoundary(cpit, cs.pos())
2206 Language const * lang = par.getParLanguage(bufparams);
2207 current_font.setLanguage(lang);
2208 current_font.fontInfo().setNumber(FONT_OFF);
2209 real_current_font.setLanguage(lang);
2210 real_current_font.fontInfo().setNumber(FONT_OFF);
2215 bool Cursor::textUndo()
2217 if (!buffer()->undo().textUndo(*this))
2224 bool Cursor::textRedo()
2226 if (!buffer()->undo().textRedo(*this))
2233 void Cursor::finishUndo() const
2235 buffer()->undo().finishUndo();
2239 void Cursor::beginUndoGroup() const
2241 buffer()->undo().beginUndoGroup(*this);
2245 void Cursor::endUndoGroup() const
2247 buffer()->undo().endUndoGroup(*this);
2251 void Cursor::recordUndo(pit_type from, pit_type to) const
2253 buffer()->undo().recordUndo(*this, from, to);
2257 void Cursor::recordUndo(pit_type from) const
2259 buffer()->undo().recordUndo(*this, from, pit());
2263 void Cursor::recordUndo(UndoKind kind) const
2265 buffer()->undo().recordUndo(*this, kind);
2269 void Cursor::recordUndoInset(Inset const * in) const
2271 buffer()->undo().recordUndoInset(*this, in);
2275 void Cursor::recordUndoFullBuffer() const
2277 buffer()->undo().recordUndoFullBuffer(*this);
2281 void Cursor::recordUndoBufferParams() const
2283 buffer()->undo().recordUndoBufferParams(*this);
2287 void Cursor::recordUndoSelection() const
2290 if (cap::multipleCellsSelected(*this))
2295 buffer()->undo().recordUndo(*this,
2296 selBegin().pit(), selEnd().pit());
2301 void Cursor::checkBufferStructure()
2303 Buffer const * master = buffer()->masterBuffer();
2304 master->tocBackend().updateItem(*this);
2305 if (master != buffer() && !master->hasGuiDelegate())
2306 // In case the master has no gui associated with it,
2307 // the TocItem is not updated (part of bug 5699).
2308 buffer()->tocBackend().updateItem(*this);
2310 // If the last tracked change of the paragraph has just been
2311 // deleted, then we need to recompute the buffer flag
2312 // tracked_changes_present_.
2313 if (inTexted() && paragraph().isChangeUpdateRequired())
2314 disp_.forceChangesUpdate();