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"
34 #include "texstream.h"
36 #include "TextMetrics.h"
37 #include "TocBackend.h"
39 #include "support/debug.h"
40 #include "support/docstream.h"
41 #include "support/ExceptionMessage.h"
42 #include "support/gettext.h"
43 #include "support/lassert.h"
45 #include "insets/InsetTabular.h"
46 #include "insets/InsetText.h"
48 #include "mathed/InsetMath.h"
49 #include "mathed/InsetMathBrace.h"
50 #include "mathed/InsetMathEnsureMath.h"
51 #include "mathed/InsetMathScript.h"
52 #include "mathed/MacroTable.h"
53 #include "mathed/MathData.h"
54 #include "mathed/MathFactory.h"
55 #include "mathed/MathMacro.h"
68 // Find position closest to (x, y) in cell given by iter.
69 // Used only in mathed
70 DocIterator bruteFind(Cursor const & c, int x, int y)
72 double best_dist = numeric_limits<double>::max();
79 et.pos() = et.lastpos();
80 for (size_t i = 0;; ++i) {
83 Inset const * inset = &it.inset();
84 CoordCache::Insets const & insetCache = c.bv().coordCache().getInsets();
86 // FIXME: in the case where the inset is not in the cache, this
87 // means that no part of it is visible on screen. In this case
88 // we don't do elaborate search and we just return the forwarded
89 // DocIterator at its beginning.
90 if (!insetCache.has(inset)) {
95 Point const o = insetCache.xy(inset);
96 inset->cursorPos(c.bv(), it.top(), c.boundary(), xo, yo);
97 // Convert to absolute
100 double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
101 // '<=' in order to take the last possible position
102 // this is important for clicking behind \sum in e.g. '\sum_i a'
103 LYXERR(Debug::DEBUG, "i: " << i << " d: " << d
104 << " best: " << best_dist);
105 if (d <= best_dist) {
120 CursorData::CursorData()
121 : DocIterator(), anchor_(),
122 selection_(false), mark_(false), word_selection_(false),
123 current_font(inherit_font),
124 autocorrect_(false), macromode_(false)
128 CursorData::CursorData(Buffer * buffer)
129 : DocIterator(buffer), anchor_(),
130 selection_(false), mark_(false), word_selection_(false),
131 current_font(inherit_font),
132 autocorrect_(false), macromode_(false)
136 CursorData::CursorData(DocIterator const & dit)
137 : DocIterator(dit), anchor_(),
138 selection_(false), mark_(false), word_selection_(false),
139 current_font(inherit_font),
140 autocorrect_(false), macromode_(false)
146 ostream & operator<<(ostream & os, CursorData const & cur)
148 os << "\n cursor: | anchor:\n";
149 for (size_t i = 0, n = cur.depth(); i != n; ++i) {
150 os << " " << cur[i] << " | ";
151 if (i < cur.anchor_.depth())
152 os << cur.anchor_[i];
154 os << "-------------------------------";
157 for (size_t i = cur.depth(), n = cur.anchor_.depth(); i < n; ++i) {
158 os << "------------------------------- | " << cur.anchor_[i] << "\n";
160 os << " selection: " << cur.selection_
161 // << " x_target: " << cur.x_target_
162 << " boundary: " << cur.boundary() << endl;
167 LyXErr & operator<<(LyXErr & os, CursorData const & cur)
174 // be careful: this is called from the bv's constructor, too, so
175 // bv functions are not yet available!
176 Cursor::Cursor(BufferView & bv)
177 : CursorData(&bv.buffer()), bv_(&bv),
178 x_target_(-1), textTargetOffset_(0),
179 beforeDispatchPosX_(0), beforeDispatchPosY_(0)
186 push_back(CursorSlice(buffer()->inset()));
187 anchor_ = doc_iterator_begin(buffer());
189 new_word_ = doc_iterator_begin(buffer());
197 // this (intentionally) does neither touch anchor nor selection status
198 void Cursor::setCursor(DocIterator const & cur)
200 DocIterator::operator=(cur);
204 void Cursor::setCursorToAnchor()
207 DocIterator normal = anchor_;
208 while (depth() < normal.depth())
210 if (depth() < anchor_.depth() && top() <= anchor_[depth() - 1])
217 void Cursor::setCursorData(CursorData const & data)
219 CursorData::operator=(data);
223 bool Cursor::getStatus(FuncRequest const & cmd, FuncStatus & status) const
227 // Try to fix cursor in case it is broken.
230 // Is this a function that acts on inset at point?
231 Inset * inset = cur.nextInset();
232 if (lyxaction.funcHasFlag(cmd.action(), LyXAction::AtPoint)
233 && inset && inset->getStatus(cur, cmd, status))
236 // This is, of course, a mess. Better create a new doc iterator and use
237 // this in Inset::getStatus. This might require an additional
238 // BufferView * arg, though (which should be avoided)
239 //Cursor safe = *this;
241 for ( ; cur.depth(); cur.pop()) {
242 //lyxerr << "\nCursor::getStatus: cmd: " << cmd << endl << *this << endl;
243 // LASSERT: Is it safe to continue here, or should we return?
244 LASSERT(cur.idx() <= cur.lastidx(), /**/);
245 LASSERT(cur.pit() <= cur.lastpit(), /**/);
246 LASSERT(cur.pos() <= cur.lastpos(), /**/);
248 // The inset's getStatus() will return 'true' if it made
249 // a definitive decision on whether it want to handle the
250 // request or not. The result of this decision is put into
251 // the 'status' parameter.
252 if (cur.inset().getStatus(cur, cmd, status)) {
261 void Cursor::saveBeforeDispatchPosXY()
263 getPos(beforeDispatchPosX_, beforeDispatchPosY_);
267 void Cursor::dispatch(FuncRequest const & cmd0)
269 LYXERR(Debug::ACTION, "Cursor::dispatch: cmd: " << cmd0 << '\n' << *this);
274 FuncRequest cmd = cmd0;
277 disp_ = DispatchResult();
281 // Is this a function that acts on inset at point?
282 if (lyxaction.funcHasFlag(cmd.action(), LyXAction::AtPoint)
284 disp_.dispatched(true);
285 disp_.screenUpdate(Update::FitCursor | Update::Force);
286 FuncRequest tmpcmd = cmd;
287 LYXERR(Debug::DEBUG, "Cursor::dispatch: (AtPoint) cmd: "
288 << cmd0 << endl << *this);
289 nextInset()->dispatch(*this, tmpcmd);
290 if (disp_.dispatched()) {
296 // store some values to be used inside of the handlers
297 beforeDispatchCursor_ = *this;
298 for (; depth(); pop(), boundary(false)) {
299 LYXERR(Debug::DEBUG, "Cursor::dispatch: cmd: "
300 << cmd0 << endl << *this);
302 // In any of these cases, the cursor is invalid, and we should
303 // try to save this document rather than crash.
304 LBUFERR(pos() <= lastpos());
305 LBUFERR(idx() <= lastidx());
306 LBUFERR(pit() <= lastpit());
308 // The common case is 'LFUN handled, need update', so make the
309 // LFUN handler's life easier by assuming this as default value.
310 // The handler can reset the update and val flags if necessary.
311 disp_.screenUpdate(Update::FitCursor | Update::Force);
312 disp_.dispatched(true);
313 inset().dispatch(*this, cmd);
314 if (disp_.dispatched())
318 // it completely to get a 'bomb early' behaviour in case this
319 // object will be used again.
320 if (!disp_.dispatched()) {
321 LYXERR(Debug::DEBUG, "RESTORING OLD CURSOR!");
322 // We might have invalidated the cursor when removing an empty
323 // paragraph while the cursor could not be moved out the inset
324 // while we initially thought we could. This might happen when
325 // a multiline inset becomes an inline inset when the second
326 // paragraph is removed.
327 if (safe.pit() > safe.lastpit()) {
328 safe.pit() = safe.lastpit();
329 safe.pos() = safe.lastpos();
332 disp_.screenUpdate(Update::None);
333 disp_.dispatched(false);
335 // restore the previous one because nested Cursor::dispatch calls
336 // are possible which would change it
337 beforeDispatchCursor_ = safe.beforeDispatchCursor_;
341 // NOTE: The code below has been copied to BufferView::dispatch.
342 // If you need to modify this, please update the other one too.
344 // notify insets we just left
346 old.beginUndoGroup();
348 bool badcursor = notifyCursorLeavesOrEnters(old, *this);
351 bv().resetInlineCompletionPos();
358 DispatchResult const & Cursor::result() const
364 BufferView & Cursor::bv() const
373 LBUFERR(depth() >= 1);
378 void Cursor::push(Inset & p)
380 push_back(CursorSlice(p));
381 p.setBuffer(*buffer());
385 void Cursor::pushBackward(Inset & p)
387 LASSERT(!empty(), return);
388 //lyxerr << "Entering inset " << t << " front" << endl;
394 bool Cursor::popBackward()
396 LASSERT(!empty(), return false);
404 bool Cursor::popForward()
406 LASSERT(!empty(), return false);
407 //lyxerr << "Leaving inset from in back" << endl;
408 const pos_type lp = (depth() > 1) ? (*this)[depth() - 2].lastpos() : 0;
412 pos() += lastpos() - lp + 1;
417 int Cursor::currentMode()
419 LASSERT(!empty(), return Inset::UNDECIDED_MODE);
420 for (int i = depth() - 1; i >= 0; --i) {
421 int res = operator[](i).inset().currentMode();
422 bool locked_mode = operator[](i).inset().lockedMode();
423 // Also return UNDECIDED_MODE when the mode is locked,
424 // as in this case it is treated the same as TEXT_MODE
425 if (res != Inset::UNDECIDED_MODE || locked_mode)
428 return Inset::TEXT_MODE;
432 bool Cursor::inCoordCache() const
434 // the root inset is not in cache, but we do not need it.
437 CoordCache::Insets const & icache = bv_->coordCache().getInsets();
438 for (size_t i = 1 ; i < depth() ; ++i)
439 if (!icache.has(&(*this)[i].inset()))
445 void Cursor::getPos(int & x, int & y) const
447 Point p = bv().getPos(*this);
453 Row const & Cursor::textRow() const
455 CursorSlice const & cs = innerTextSlice();
456 ParagraphMetrics const & pm = bv().parMetrics(cs.text(), cs.pit());
457 return pm.getRow(pos(), boundary());
461 void Cursor::resetAnchor()
464 checkNewWordPosition();
468 void Cursor::markNewWordPosition()
470 if (lyxrc.spellcheck_continuously && inTexted() && new_word_.empty()) {
471 FontSpan nw = locateWord(WHOLE_WORD);
472 if (nw.size() == 1) {
473 LYXERR(Debug::DEBUG, "start new word: "
475 << " pos: " << nw.first);
482 void Cursor::clearNewWordPosition()
484 if (!new_word_.empty()) {
485 LYXERR(Debug::DEBUG, "clear new word: "
487 << " pos: " << pos());
493 void Cursor::checkNewWordPosition()
495 if (!lyxrc.spellcheck_continuously || new_word_.empty())
498 clearNewWordPosition();
500 // forget the position of the current new word if
501 // 1) the paragraph changes or
502 // 2) the count of nested insets changes or
503 // 3) the cursor pos is out of paragraph bound
504 if (pit() != new_word_.pit() ||
505 depth() != new_word_.depth() ||
506 new_word_.pos() > new_word_.lastpos()) {
507 clearNewWordPosition();
508 } else if (new_word_.fixIfBroken())
509 // 4) or the remembered position was "broken"
510 clearNewWordPosition();
512 FontSpan nw = locateWord(WHOLE_WORD);
514 FontSpan ow = new_word_.locateWord(WHOLE_WORD);
515 if (nw.intersect(ow).empty())
516 clearNewWordPosition();
518 LYXERR(Debug::DEBUG, "new word: "
520 << " pos: " << nw.first << ".." << nw.last);
522 clearNewWordPosition();
529 bool Cursor::posBackward()
538 bool Cursor::posForward()
540 if (pos() == lastpos())
547 bool Cursor::posVisRight(bool skip_inset)
549 Cursor new_cur = *this; // where we will move to
550 pos_type left_pos; // position visually left of current cursor
551 pos_type right_pos; // position visually right of current cursor
553 getSurroundingPos(left_pos, right_pos);
555 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
557 // Are we at an inset?
558 new_cur.pos() = right_pos;
559 new_cur.boundary(false);
561 text()->checkAndActivateInsetVisual(new_cur, right_pos >= pos(), false)) {
562 // we actually move the cursor at the end of this
563 // function, for now we just keep track of the new
564 // position in new_cur...
565 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
568 // Are we already at rightmost pos in row?
569 else if (text()->empty() || right_pos == -1) {
572 if (!new_cur.posVisToNewRow(false)) {
573 LYXERR(Debug::RTL, "not moving!");
577 // we actually move the cursor at the end of this
578 // function, for now just keep track of the new
579 // position in new_cur...
580 LYXERR(Debug::RTL, "right edge, moving: " << int(new_cur.pit()) << ","
581 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
584 // normal movement to the right
587 // Recall, if the cursor is at position 'x', that
588 // means *before* the character at position 'x'. In
589 // RTL, "before" means "to the right of", in LTR, "to
590 // the left of". So currently our situation is this:
591 // the position to our right is 'right_pos' (i.e.,
592 // we're currently to the left of 'right_pos'). In
593 // order to move to the right, it depends whether or
594 // not the character at 'right_pos' is RTL.
595 bool const new_pos_is_RTL = paragraph().getFontSettings(
596 buffer()->params(), right_pos).isVisibleRightToLeft();
597 // If the character at 'right_pos' *is* LTR, then in
598 // order to move to the right of it, we need to be
599 // *after* 'right_pos', i.e., move to position
601 if (!new_pos_is_RTL) {
602 new_cur.pos() = right_pos + 1;
603 // set the boundary to true in two situations:
605 // 1. if new_pos is now lastpos, and we're in
606 // an RTL paragraph (this means that we're
607 // moving right to the end of an LTR chunk
608 // which is at the end of an RTL paragraph);
609 (new_cur.pos() == lastpos()
610 && paragraph().isRTL(buffer()->params()))
611 // 2. if the position *after* right_pos is RTL
612 // (we want to be *after* right_pos, not
613 // before right_pos + 1!)
614 || paragraph().getFontSettings(buffer()->params(),
615 new_cur.pos()).isVisibleRightToLeft()
617 new_cur.boundary(true);
618 else // set the boundary to false
619 new_cur.boundary(false);
621 // Otherwise (if the character at position 'right_pos'
622 // is RTL), then moving to the right of it is as easy
623 // as setting the new position to 'right_pos'.
625 new_cur.pos() = right_pos;
626 new_cur.boundary(false);
631 bool const moved = new_cur != *this || new_cur.boundary() != boundary();
634 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
635 << (new_cur.boundary() ? " (boundary)" : ""));
643 bool Cursor::posVisLeft(bool skip_inset)
645 Cursor new_cur = *this; // where we will move to
646 pos_type left_pos; // position visually left of current cursor
647 pos_type right_pos; // position visually right of current cursor
649 getSurroundingPos(left_pos, right_pos);
651 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
653 // Are we at an inset?
654 new_cur.pos() = left_pos;
655 new_cur.boundary(false);
657 text()->checkAndActivateInsetVisual(new_cur, left_pos >= pos(), true)) {
658 // we actually move the cursor at the end of this
659 // function, for now we just keep track of the new
660 // position in new_cur...
661 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
664 // Are we already at leftmost pos in row?
665 else if (text()->empty() || left_pos == -1) {
668 if (!new_cur.posVisToNewRow(true)) {
669 LYXERR(Debug::RTL, "not moving!");
673 // we actually move the cursor at the end of this
674 // function, for now just keep track of the new
675 // position in new_cur...
676 LYXERR(Debug::RTL, "left edge, moving: " << int(new_cur.pit()) << ","
677 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
680 // normal movement to the left
683 // Recall, if the cursor is at position 'x', that
684 // means *before* the character at position 'x'. In
685 // RTL, "before" means "to the right of", in LTR, "to
686 // the left of". So currently our situation is this:
687 // the position to our left is 'left_pos' (i.e., we're
688 // currently to the right of 'left_pos'). In order to
689 // move to the left, it depends whether or not the
690 // character at 'left_pos' is RTL.
691 bool const new_pos_is_RTL = paragraph().getFontSettings(
692 buffer()->params(), left_pos).isVisibleRightToLeft();
693 // If the character at 'left_pos' *is* RTL, then in
694 // order to move to the left of it, we need to be
695 // *after* 'left_pos', i.e., move to position
697 if (new_pos_is_RTL) {
698 new_cur.pos() = left_pos + 1;
699 // set the boundary to true in two situations:
701 // 1. if new_pos is now lastpos and we're in
702 // an LTR paragraph (this means that we're
703 // moving left to the end of an RTL chunk
704 // which is at the end of an LTR paragraph);
705 (new_cur.pos() == lastpos()
706 && !paragraph().isRTL(buffer()->params()))
707 // 2. if the position *after* left_pos is not
708 // RTL (we want to be *after* left_pos, not
709 // before left_pos + 1!)
710 || !paragraph().getFontSettings(buffer()->params(),
711 new_cur.pos()).isVisibleRightToLeft()
713 new_cur.boundary(true);
714 else // set the boundary to false
715 new_cur.boundary(false);
717 // Otherwise (if the character at position 'left_pos'
718 // is LTR), then moving to the left of it is as easy
719 // as setting the new position to 'left_pos'.
721 new_cur.pos() = left_pos;
722 new_cur.boundary(false);
727 bool const moved = new_cur != *this || new_cur.boundary() != boundary();
730 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
731 << (new_cur.boundary() ? " (boundary)" : ""));
741 // Return true on success
742 bool findNonVirtual(Row const & row, Row::const_iterator & cit, bool onleft)
745 while (cit != row.begin() && cit->isVirtual())
748 while (cit != row.end() && cit->isVirtual())
751 return cit != row.end() && !cit->isVirtual();
756 void Cursor::getSurroundingPos(pos_type & left_pos, pos_type & right_pos) const
758 // by default, we know nothing.
762 Row const & row = textRow();
763 TextMetrics const & tm = bv_->textMetrics(text());
765 Row::const_iterator cit = tm.findRowElement(row, pos(), boundary(), dummy);
766 // Handle the case of empty row
767 if (cit == row.end()) {
768 if (paragraph().isRTL(buffer()->params()))
769 right_pos = row.pos();
771 left_pos = row.pos() - 1;
775 // skip virtual elements and exit if no non-virtual one exists
776 if (!findNonVirtual(row, cit, !cit->isRTL()))
779 // if the position is at the left side of the element, we have to
780 // look at the previous element
781 if (pos() == cit->left_pos()) {
782 LYXERR(Debug::RTL, "getSurroundingPos(" << pos() << (boundary() ? "b" : "")
783 << "), AT LEFT of *cit=" << *cit);
784 // this one is easy (see common case below)
785 right_pos = pos() - (cit->isRTL() ? 1 : 0);
786 // at the left of the row
787 if (cit == row.begin())
790 if (!findNonVirtual(row, cit, true))
792 // [...[ is the row element, | is cursor position (! with boundary)
793 // [ 1 2 [ is a ltr row element with pos=1 and endpos=3
794 // ] 2 1] is an rtl row element with pos=1 and endpos=3
795 // [ 1 2 [ [|3 4 [ => (2, 3)
796 // or [ 1 2 [ ]!4 3 ] => (2, 4)
797 // or ] 2 1 ] [|3 4 [ => (1, 3)
798 // or ] 4 3 ] ]!2 1 ] => (3, 2)
799 left_pos = cit->right_pos() - (cit->isRTL() ? 0 : 1);
800 // happens with consecutive row of same direction
801 if (left_pos == right_pos) {
802 left_pos += cit->isRTL() ? 1 : -1;
805 // same code but with the element at the right
806 else if (pos() == cit->right_pos()) {
807 LYXERR(Debug::RTL, "getSurroundingPos(" << pos() << (boundary() ? "b" : "")
808 << "), AT RIGHT of *cit=" << *cit);
809 // this one is easy (see common case below)
810 left_pos = pos() - (cit->isRTL() ? 0 : 1);
811 // at the right of the row
812 if (cit + 1 == row.end())
815 if (!findNonVirtual(row, cit, false))
817 // [ 1 2![ [ 3 4 [ => (2, 3)
818 // or [ 1 2![ ] 4 3 ] => (2, 4)
819 // or ] 2 1|] [ 3 4 [ => (1, 3)
820 // or ] 4 3|] ] 2 1 ] => (3, 2)
821 right_pos = cit->left_pos() - (cit->isRTL() ? 1 : 0);
822 // happens with consecutive row of same direction
823 if (right_pos == left_pos)
824 right_pos += cit->isRTL() ? -1 : 1;
826 // common case: both positions are inside the row element
828 // [ 1 2|3 [ => (2, 3)
829 // or ] 3|2 1 ] => (3, 2)
830 left_pos = pos() - (cit->isRTL() ? 0 : 1);
831 right_pos = pos() - (cit->isRTL() ? 1 : 0);
834 // Note that debug message does not catch all early returns above
835 LYXERR(Debug::RTL,"getSurroundingPos(" << pos() << (boundary() ? "b" : "")
836 << ") => (" << left_pos << ", " << right_pos <<")");
840 bool Cursor::posVisToNewRow(bool movingLeft)
842 Paragraph const & par = paragraph();
843 Buffer const & buf = *buffer();
844 Row const & row = textRow();
845 bool par_is_LTR = !par.isRTL(buf.params());
847 // Inside a table, determining whether to move to the next or
848 // previous row should be done based on the table's direction.
849 if (inset().asInsetTabular()) {
850 par_is_LTR = !inset().asInsetTabular()->isRightToLeft(*this);
851 LYXERR(Debug::RTL, "Inside table! par_is_LTR=" << (par_is_LTR ? 1 : 0));
854 // if moving left in an LTR paragraph or moving right in an
855 // RTL one, move to previous row
856 if (par_is_LTR == movingLeft) {
857 if (row.pos() == 0) { // we're at first row in paragraph
858 if (pit() == 0) // no previous paragraph! don't move
860 // move to last pos in previous par
864 } else { // move to previous row in this par
865 pos() = row.pos() - 1; // this is guaranteed to be in previous row
869 // if moving left in an RTL paragraph or moving right in an
870 // LTR one, move to next row
872 if (row.endpos() == lastpos()) { // we're at last row in paragraph
873 if (pit() == lastpit()) // last paragraph! don't move
875 // move to first row in next par
879 } else { // move to next row in this par
880 pos() = row.endpos();
885 // make sure we're at left-/right-most pos in new row
886 posVisToRowExtremity(!movingLeft);
892 void Cursor::posVisToRowExtremity(bool left)
894 LYXERR(Debug::RTL, "entering extremity: " << pit() << "," << pos() << ","
895 << (boundary() ? 1 : 0));
897 TextMetrics const & tm = bv_->textMetrics(text());
898 // Looking for extremities is like clicking on the left or the
900 int x = tm.origin().x_ + (left ? 0 : textRow().width());
902 pos() = tm.getPosNearX(textRow(), x, b);
905 LYXERR(Debug::RTL, "leaving extremity: " << pit() << "," << pos() << ","
906 << (boundary() ? 1 : 0));
910 bool Cursor::reverseDirectionNeeded() const
913 * We determine the directions based on the direction of the
914 * bottom() --- i.e., outermost --- paragraph, because that is
915 * the only way to achieve consistency of the arrow's movements
916 * within a paragraph, and thus avoid situations in which the
919 return bottom().paragraph().isRTL(bv().buffer().params());
923 CursorSlice Cursor::normalAnchor() const
927 // LASSERT: There have been several bugs around this code, that seem
928 // to involve failures to reset the anchor. We can at least not crash
929 // in release mode by resetting it ourselves.
930 if (anchor_.depth() < depth()) {
931 LYXERR0("Cursor is deeper than anchor. PLEASE REPORT.\nCursor is"
933 const_cast<DocIterator &>(anchor_) = *this;
936 CursorSlice normal = anchor_[depth() - 1];
937 if (depth() < anchor_.depth() && top() <= normal) {
938 // anchor is behind cursor -> move anchor behind the inset
945 CursorSlice Cursor::selBegin() const
949 return normalAnchor() < top() ? normalAnchor() : top();
953 CursorSlice Cursor::selEnd() const
957 return normalAnchor() > top() ? normalAnchor() : top();
961 DocIterator Cursor::selectionBegin() const
967 // FIXME: This is a work-around for the problem that
968 // CursorSlice doesn't keep track of the boundary.
969 if (normalAnchor() == top())
970 di = anchor_.boundary() > boundary() ? anchor_ : *this;
972 di = normalAnchor() < top() ? anchor_ : *this;
978 DocIterator Cursor::selectionEnd() const
984 // FIXME: This is a work-around for the problem that
985 // CursorSlice doesn't keep track of the boundary.
986 if (normalAnchor() == top())
987 di = anchor_.boundary() < boundary() ? anchor_ : *this;
989 di = normalAnchor() > top() ? anchor_ : *this;
991 if (di.depth() > depth()) {
999 void Cursor::setSelection()
1002 if (idx() == normalAnchor().idx() &&
1003 pit() == normalAnchor().pit() &&
1004 pos() == normalAnchor().pos())
1009 void Cursor::setSelection(DocIterator const & where, int n)
1018 void Cursor::clearSelection()
1021 setWordSelection(false);
1027 void Cursor::setTargetX(int x)
1030 textTargetOffset_ = 0;
1034 int Cursor::x_target() const
1040 void Cursor::clearTargetX()
1043 textTargetOffset_ = 0;
1047 void Cursor::updateTextTargetOffset()
1052 textTargetOffset_ = x - x_target_;
1056 void Cursor::info(odocstream & os) const
1058 for (int i = 1, n = depth(); i < n; ++i) {
1059 operator[](i).inset().infoize(os);
1063 Inset const * inset = prevInset();
1064 // prevInset() can return 0 in certain case.
1066 prevInset()->infoize2(os);
1071 bool Cursor::selHandle(bool sel)
1073 //lyxerr << "Cursor::selHandle" << endl;
1076 if (sel == selection())
1080 cap::saveSelection(*this);
1089 ///////////////////////////////////////////////////////////////////
1092 // The part below is the non-integrated rest of the original math
1093 // cursor. This should be either generalized for texted or moved
1094 // back to mathed (in most cases to InsetMathNest).
1096 ///////////////////////////////////////////////////////////////////
1098 #include "mathed/InsetMathChar.h"
1099 #include "mathed/InsetMathGrid.h"
1100 #include "mathed/InsetMathScript.h"
1101 #include "mathed/InsetMathUnknown.h"
1102 #include "mathed/MathFactory.h"
1103 #include "mathed/MathStream.h"
1104 #include "mathed/MathSupport.h"
1109 bool Cursor::isInside(Inset const * p) const
1111 for (size_t i = 0; i != depth(); ++i)
1112 if (&operator[](i).inset() == p)
1118 void Cursor::leaveInset(Inset const & inset)
1120 for (size_t i = 0; i != depth(); ++i) {
1121 if (&operator[](i).inset() == &inset) {
1129 bool Cursor::openable(MathAtom const & t) const
1140 // we can't move into anything new during selection
1141 if (depth() >= anchor_.depth())
1143 if (t.nucleus() != &anchor_[depth()].inset())
1150 void Cursor::setScreenPos(int x, int /*y*/)
1153 //bruteFind(*this, x, y, 0, bv().workWidth(), 0, bv().workHeight());
1158 void Cursor::plainErase()
1160 cell().erase(pos());
1164 void Cursor::markInsert()
1166 insert(char_type(0));
1170 void Cursor::markErase()
1172 cell().erase(pos());
1176 void Cursor::plainInsert(MathAtom const & t)
1178 cell().insert(pos(), t);
1180 inset().setBuffer(bv_->buffer());
1182 checkBufferStructure();
1186 void Cursor::insert(docstring const & str)
1188 for (char_type c : str)
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 bool const user_macro = buffer()->getMacro(name, *this, false);
1430 MathAtom atom = user_macro ? MathAtom(new MathMacro(buffer(), name))
1431 : createInsetMath(name, buffer());
1433 // try to put argument into macro, if we just inserted a macro
1434 bool macroArg = false;
1435 MathMacro * atomAsMacro = atom.nucleus()->asMacro();
1437 // macros here are still unfolded (in init mode in fact). So
1438 // we have to resolve the macro here manually and check its arity
1439 // to put the selection behind it if arity > 0.
1440 MacroData const * data = buffer()->getMacro(atomAsMacro->name());
1441 if (!selection.empty() && data && data->numargs() - data->optionals() > 0) {
1443 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 1);
1445 // non-greedy case. Do not touch the arguments behind
1446 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 0);
1449 // insert remembered selection into first argument of a non-macro
1450 else if (atom.nucleus()->nargs() > 0)
1451 atom.nucleus()->cell(0).append(selection);
1453 MathWordList const & words = mathedWordList();
1454 MathWordList::const_iterator it = words.find(name);
1455 bool keep_mathmode = it != words.end() && (it->second.inset == "font"
1456 || it->second.inset == "oldfont"
1457 || it->second.inset == "mbox");
1458 bool ert_macro = !user_macro && it == words.end();
1460 if (in && in->currentMode() == Inset::TEXT_MODE
1461 && atom.nucleus()->currentMode() == Inset::MATH_MODE
1462 && name != from_ascii("ensuremath") && !ert_macro) {
1463 MathAtom at(new InsetMathEnsureMath(buffer()));
1464 at.nucleus()->cell(0).push_back(atom);
1467 } else if (in && in->currentMode() == Inset::MATH_MODE
1468 && atom.nucleus()->currentMode() == Inset::TEXT_MODE
1469 && !keep_mathmode) {
1470 MathAtom at = createInsetMath("text", buffer());
1471 at.nucleus()->cell(0).push_back(atom);
1477 // finally put the macro argument behind, if needed
1479 if (selection.size() > 1 || selection[0]->asScriptInset())
1480 plainInsert(MathAtom(new InsetMathBrace(selection)));
1489 docstring Cursor::macroName()
1491 return inMacroMode() ? activeMacro()->name() : docstring();
1495 void Cursor::handleNest(MathAtom const & a, int c)
1497 //lyxerr << "Cursor::handleNest: " << c << endl;
1499 asArray(cap::grabAndEraseSelection(*this), t.nucleus()->cell(c));
1502 pushBackward(*nextInset());
1506 int Cursor::targetX() const
1508 if (x_target() != -1)
1517 int Cursor::textTargetOffset() const
1519 return textTargetOffset_;
1523 void Cursor::setTargetX()
1532 bool Cursor::inMacroMode() const
1536 if (pos() == 0 || cell().empty())
1538 InsetMathUnknown const * p = prevAtom()->asUnknownInset();
1539 return p && !p->final();
1543 InsetMathUnknown * Cursor::activeMacro()
1545 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1549 InsetMathUnknown const * Cursor::activeMacro() const
1551 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1555 void Cursor::pullArg()
1558 MathData ar = cell();
1559 if (popBackward() && inMathed()) {
1561 cell().insert(pos(), ar);
1564 //formula()->mutateToText();
1569 void Cursor::touch()
1573 DocIterator::const_iterator it = begin();
1574 DocIterator::const_iterator et = end();
1575 for ( ; it != et; ++it)
1581 void Cursor::normalize()
1583 if (idx() > lastidx()) {
1584 lyxerr << "this should not really happen - 1: "
1585 << idx() << ' ' << nargs()
1586 << " in: " << &inset() << endl;
1590 if (pos() > lastpos()) {
1591 lyxerr << "this should not really happen - 2: "
1592 << pos() << ' ' << lastpos() << " in idx: " << idx()
1594 odocstringstream os;
1595 otexrowstream ots(os, false);
1596 WriteStream wi(ots, false, true, WriteStream::wsDefault);
1597 inset().asInsetMath()->write(wi);
1598 lyxerr << to_utf8(os.str()) << endl;
1604 bool Cursor::upDownInMath(bool up)
1606 // Be warned: The 'logic' implemented in this function is highly
1607 // fragile. A distance of one pixel or a '<' vs '<=' _really
1608 // matters. So fiddle around with it only if you think you know
1609 // what you are doing!
1613 xo = beforeDispatchPosX_;
1615 // check if we had something else in mind, if not, this is the future
1617 if (x_target_ == -1)
1619 else if (inset().asInsetText() && xo - textTargetOffset() != x_target()) {
1620 // In text mode inside the line (not left or right) possibly set a new target_x,
1621 // but only if we are somewhere else than the previous target-offset.
1623 // We want to keep the x-target on subsequent up/down movements
1624 // that cross beyond the end of short lines. Thus a special
1625 // handling when the cursor is at the end of line: Use the new
1626 // x-target only if the old one was before the end of line
1627 // or the old one was after the beginning of the line
1628 bool inRTL = innerParagraph().isRTL(bv().buffer().params());
1632 left = pos() == textRow().endpos();
1633 right = pos() == textRow().pos();
1635 left = pos() == textRow().pos();
1636 right = pos() == textRow().endpos();
1638 if ((!left && !right) ||
1639 (left && !right && xo < x_target_) ||
1640 (!left && right && x_target_ < xo))
1647 // try neigbouring script insets
1649 if (inMathed() && !selection()) {
1652 InsetMathScript const * p = prevAtom()->asScriptInset();
1653 if (p && p->has(up)) {
1655 push(*const_cast<InsetMathScript*>(p));
1656 idx() = p->idxOfScript(up);
1659 // we went in the right direction? Otherwise don't jump into the script
1663 int oy = beforeDispatchPosY_;
1664 if ((!up && y <= oy) ||
1673 if (pos() != lastpos()) {
1674 InsetMathScript const * p = nextAtom()->asScriptInset();
1675 if (p && p->has(up)) {
1676 push(*const_cast<InsetMathScript*>(p));
1677 idx() = p->idxOfScript(up);
1680 // we went in the right direction? Otherwise don't jump into the script
1684 int oy = beforeDispatchPosY_;
1685 if ((!up && y <= oy) ||
1694 // try to find an inset that knows better then we,
1695 if (inset().idxUpDown(*this, up)) {
1696 //lyxerr << "idxUpDown triggered" << endl;
1697 // try to find best position within this inset
1699 setCursor(bruteFind(*this, xo, yo));
1703 // any improvement going just out of inset?
1704 if (popBackward() && inMathed()) {
1705 //lyxerr << "updown: popBackward succeeded" << endl;
1708 int yold = beforeDispatchPosY_;
1710 if (up ? ynew < yold : ynew > yold)
1714 // no success, we are probably at the document top or bottom
1720 bool Cursor::atFirstOrLastRow(bool up)
1722 TextMetrics const & tm = bv_->textMetrics(text());
1723 ParagraphMetrics const & pm = tm.parMetrics(pit());
1726 if (pos() && boundary())
1727 row = pm.pos2row(pos() - 1);
1729 row = pm.pos2row(pos());
1732 if (pit() == 0 && row == 0)
1735 if (pit() + 1 >= int(text()->paragraphs().size()) &&
1736 row + 1 >= int(pm.rows().size()))
1743 bool Cursor::upDownInText(bool up, bool & updateNeeded)
1745 LASSERT(text(), return false);
1751 xo = beforeDispatchPosX_;
1753 // update the targetX - this is here before the "return false"
1754 // to set a new target which can be used by InsetTexts above
1755 // if we cannot move up/down inside this inset anymore
1756 if (x_target_ == -1)
1758 else if (xo - textTargetOffset() != x_target() &&
1759 depth() == beforeDispatchCursor_.depth()) {
1760 // In text mode inside the line (not left or right)
1761 // possibly set a new target_x, but only if we are
1762 // somewhere else than the previous target-offset.
1764 // We want to keep the x-target on subsequent up/down
1765 // movements that cross beyond the end of short lines.
1766 // Thus a special handling when the cursor is at the
1767 // end of line: Use the new x-target only if the old
1768 // one was before the end of line or the old one was
1769 // after the beginning of the line
1770 bool inRTL = innerParagraph().isRTL(bv().buffer().params());
1774 left = pos() == textRow().endpos();
1775 right = pos() == textRow().pos();
1777 left = pos() == textRow().pos();
1778 right = pos() == textRow().endpos();
1780 if ((!left && !right) ||
1781 (left && !right && xo < x_target_) ||
1782 (!left && right && x_target_ < xo))
1789 // first get the current line
1790 TextMetrics & tm = bv_->textMetrics(text());
1791 ParagraphMetrics const & pm = tm.parMetrics(pit());
1793 if (pos() && boundary())
1794 row = pm.pos2row(pos() - 1);
1796 row = pm.pos2row(pos());
1798 if (atFirstOrLastRow(up)) {
1799 // Is there a place for the cursor to go ? If yes, we
1800 // can execute the DEPM, otherwise we should keep the
1801 // paragraph to host the cursor.
1802 Cursor dummy = *this;
1803 bool valid_destination = false;
1804 for(; dummy.depth(); dummy.pop())
1805 if (!dummy.atFirstOrLastRow(up)) {
1806 valid_destination = true;
1810 // will a next dispatch follow and if there is a new
1811 // dispatch will it move the cursor out ?
1812 if (depth() > 1 && valid_destination) {
1813 // The cursor hasn't changed yet. This happens when
1814 // you e.g. move out of an inset. And to give the
1815 // DEPM the possibility of doing something we must
1816 // provide it with two different cursors. (Lgb, vfr)
1818 dummy.pos() = dummy.pos() == 0 ? dummy.lastpos() : 0;
1819 dummy.pit() = dummy.pit() == 0 ? dummy.lastpit() : 0;
1821 updateNeeded |= bv().checkDepm(dummy, *this);
1822 updateTextTargetOffset();
1824 forceBufferUpdate();
1829 // with and without selection are handled differently
1831 int yo = bv().getPos(*this).y_;
1833 // To next/previous row
1835 tm.editXY(*this, xo, yo - textRow().ascent() - 1);
1837 tm.editXY(*this, xo, yo + textRow().descent() + 1);
1840 // This happens when you move out of an inset.
1841 // And to give the DEPM the possibility of doing
1842 // something we must provide it with two different
1844 Cursor dummy = *this;
1847 if (bv().checkDepm(dummy, old)) {
1848 updateNeeded = true;
1849 // Make sure that cur gets back whatever happened to dummy (Lgb)
1852 if (inTexted() && pos() && paragraph().isEnvSeparator(pos() - 1))
1855 // if there is a selection, we stay out of any inset,
1856 // and just jump to the right position:
1862 } else if (pit() > 0) {
1864 TextMetrics & tm = bv_->textMetrics(text());
1865 if (!tm.contains(pit()))
1866 tm.newParMetricsUp();
1867 ParagraphMetrics const & pmcur = tm.parMetrics(pit());
1868 next_row = pmcur.rows().size() - 1;
1871 if (row + 1 < int(pm.rows().size())) {
1873 } else if (pit() + 1 < int(text()->paragraphs().size())) {
1875 TextMetrics & tm = bv_->textMetrics(text());
1876 if (!tm.contains(pit()))
1877 tm.newParMetricsDown();
1882 Row const & real_next_row = tm.parMetrics(pit()).rows()[next_row];
1884 top().pos() = tm.getPosNearX(real_next_row, xo, bound);
1887 updateNeeded |= bv().checkDepm(*this, old);
1891 forceBufferUpdate();
1892 updateTextTargetOffset();
1897 void Cursor::handleFont(string const & font)
1899 LYXERR(Debug::DEBUG, font);
1903 safe = cap::grabAndEraseSelection(*this);
1908 if (lastpos() != 0) {
1909 // something left in the cell
1911 // cursor in first position
1913 } else if (pos() == lastpos()) {
1914 // cursor in last position
1917 // cursor in between. split cell
1918 MathData::iterator bt = cell().begin();
1919 MathAtom at = createInsetMath(from_utf8(font), buffer());
1920 at.nucleus()->cell(0) = MathData(buffer(), bt, bt + pos());
1921 cell().erase(bt, bt + pos());
1926 // nothing left in the cell
1935 void Cursor::message(docstring const & msg) const
1937 disp_.setMessage(msg);
1941 void Cursor::errorMessage(docstring const & msg) const
1943 disp_.setMessage(msg);
1944 disp_.setError(true);
1950 docstring parbreak(Cursor const * cur)
1952 odocstringstream os;
1954 // only add blank line if we're not in a ParbreakIsNewline situation
1955 if (!cur->inset().getLayout().parbreakIsNewline()
1956 && !cur->paragraph().layout().parbreak_is_newline)
1964 docstring Cursor::selectionAsString(bool with_label) const
1970 return cap::grabSelection(*this);
1972 int const label = with_label
1973 ? AS_STR_LABEL | AS_STR_INSETS : AS_STR_INSETS;
1975 idx_type const startidx = selBegin().idx();
1976 idx_type const endidx = selEnd().idx();
1977 if (startidx != endidx) {
1978 // multicell selection
1979 InsetTabular * table = inset().asInsetTabular();
1980 LASSERT(table, return docstring());
1981 return table->asString(startidx, endidx);
1984 ParagraphList const & pars = text()->paragraphs();
1986 pit_type const startpit = selBegin().pit();
1987 pit_type const endpit = selEnd().pit();
1988 size_t const startpos = selBegin().pos();
1989 size_t const endpos = selEnd().pos();
1991 if (startpit == endpit)
1992 return pars[startpit].asString(startpos, endpos, label);
1994 // First paragraph in selection
1995 docstring result = pars[startpit].
1996 asString(startpos, pars[startpit].size(), label)
1999 // The paragraphs in between (if any)
2000 for (pit_type pit = startpit + 1; pit != endpit; ++pit) {
2001 Paragraph const & par = pars[pit];
2002 result += par.asString(0, par.size(), label)
2006 // Last paragraph in selection
2007 result += pars[endpit].asString(0, endpos, label);
2013 docstring Cursor::currentState() const
2016 odocstringstream os;
2018 #ifdef DEVEL_VERSION
2019 InsetMath * math = inset().asInsetMath();
2021 os << _(", Inset: ") << math->id();
2022 os << _(", Cell: ") << idx();
2023 os << _(", Position: ") << pos();
2029 return text()->currentState(*this);
2035 docstring Cursor::getPossibleLabel() const
2037 return inMathed() ? from_ascii("eq:") : text()->getPossibleLabel(*this);
2041 Encoding const * Cursor::getEncoding() const
2045 CursorSlice const & sl = innerTextSlice();
2046 Text const & text = *sl.text();
2047 Font font = text.getPar(sl.pit()).getFont(
2048 bv().buffer().params(), sl.pos(), text.outerFont(sl.pit()));
2049 return font.language()->encoding();
2053 void Cursor::undispatched() const
2055 disp_.dispatched(false);
2059 void Cursor::dispatched() const
2061 disp_.dispatched(true);
2065 void Cursor::screenUpdateFlags(Update::flags f) const
2067 disp_.screenUpdate(f);
2071 void Cursor::forceBufferUpdate() const
2073 disp_.forceBufferUpdate();
2077 void Cursor::clearBufferUpdate() const
2079 disp_.clearBufferUpdate();
2083 bool Cursor::needBufferUpdate() const
2085 return disp_.needBufferUpdate();
2089 void Cursor::noScreenUpdate() const
2091 disp_.screenUpdate(Update::None);
2095 Font Cursor::getFont() const
2097 // The logic here should more or less match to the
2098 // Cursor::setCurrentFont logic, i.e. the cursor height should
2099 // give a hint what will happen if a character is entered.
2101 // HACK. far from being perfect...
2103 CursorSlice const & sl = innerTextSlice();
2104 Text const & text = *sl.text();
2105 Paragraph const & par = text.getPar(sl.pit());
2107 // on boundary, so we are really at the character before
2108 pos_type pos = sl.pos();
2109 if (pos > 0 && boundary())
2112 // on space? Take the font before (only for RTL boundary stay)
2114 TextMetrics const & tm = bv().textMetrics(&text);
2115 if (pos == sl.lastpos()
2116 || (par.isSeparator(pos)
2117 && !tm.isRTLBoundary(sl.pit(), pos)))
2121 // get font at the position
2122 Font font = par.getFont(buffer()->params(), pos,
2123 text.outerFont(sl.pit()));
2129 bool Cursor::fixIfBroken()
2131 bool const broken_cursor = DocIterator::fixIfBroken();
2132 bool const broken_anchor = anchor_.fixIfBroken();
2134 if (broken_cursor || broken_anchor) {
2135 clearNewWordPosition();
2143 void Cursor::sanitize()
2145 setBuffer(&bv_->buffer());
2146 DocIterator::sanitize();
2154 bool notifyCursorLeavesOrEnters(Cursor const & old, Cursor & cur)
2156 // find inset in common
2158 for (i = 0; i < old.depth() && i < cur.depth(); ++i) {
2159 if (&old[i].inset() != &cur[i].inset())
2163 // update words if we just moved to another paragraph
2164 if (i == old.depth() && i == cur.depth()
2165 && !cur.buffer()->isClean()
2166 && cur.inTexted() && old.inTexted()
2167 && cur.pit() != old.pit()) {
2168 old.paragraph().updateWords();
2171 // notify everything on top of the common part in old cursor,
2172 // but stop if the inset claims the cursor to be invalid now
2173 for (size_type j = i; j < old.depth(); ++j) {
2174 Cursor inset_pos = old;
2175 inset_pos.cutOff(j);
2176 if (old[j].inset().notifyCursorLeaves(inset_pos, cur))
2180 // notify everything on top of the common part in new cursor,
2181 // but stop if the inset claims the cursor to be invalid now
2182 for (; i < cur.depth(); ++i) {
2183 if (cur[i].inset().notifyCursorEnters(cur))
2191 void Cursor::setCurrentFont()
2193 CursorSlice const & cs = innerTextSlice();
2194 Paragraph const & par = cs.paragraph();
2195 pos_type cpit = cs.pit();
2196 pos_type cpos = cs.pos();
2197 Text const & ctext = *cs.text();
2198 TextMetrics const & tm = bv().textMetrics(&ctext);
2200 // are we behind previous char in fact? -> go to that char
2201 if (cpos > 0 && boundary())
2204 // find position to take the font from
2206 // paragraph end? -> font of last char
2207 if (cpos == lastpos())
2209 // on space? -> look at the words in front of space
2210 else if (cpos > 0 && par.isSeparator(cpos)) {
2211 // abc| def -> font of c
2212 // abc |[WERBEH], i.e. boundary==true -> font of c
2213 // abc [WERBEH]| def, font of the space
2214 if (!tm.isRTLBoundary(cpit, cpos))
2220 BufferParams const & bufparams = buffer()->params();
2221 current_font = par.getFontSettings(bufparams, cpos);
2222 real_current_font = tm.displayFont(cpit, cpos);
2224 // special case for paragraph end
2225 if (cs.pos() == lastpos()
2226 && tm.isRTLBoundary(cpit, cs.pos())
2228 Language const * lang = par.getParLanguage(bufparams);
2229 current_font.setLanguage(lang);
2230 current_font.fontInfo().setNumber(FONT_OFF);
2231 real_current_font.setLanguage(lang);
2232 real_current_font.fontInfo().setNumber(FONT_OFF);
2237 bool Cursor::textUndo()
2239 if (!buffer()->undo().textUndo(*this))
2246 bool Cursor::textRedo()
2248 if (!buffer()->undo().textRedo(*this))
2255 void Cursor::finishUndo() const
2257 buffer()->undo().finishUndo();
2261 void Cursor::beginUndoGroup() const
2263 buffer()->undo().beginUndoGroup(*this);
2267 void Cursor::endUndoGroup() const
2269 buffer()->undo().endUndoGroup(*this);
2273 void Cursor::recordUndo(pit_type from, pit_type to) const
2275 buffer()->undo().recordUndo(*this, from, to);
2279 void Cursor::recordUndo(pit_type from) const
2281 buffer()->undo().recordUndo(*this, from, pit());
2285 void Cursor::recordUndo(UndoKind kind) const
2287 buffer()->undo().recordUndo(*this, kind);
2291 void Cursor::recordUndoInset(Inset const * in) const
2293 buffer()->undo().recordUndoInset(*this, in);
2297 void Cursor::recordUndoFullBuffer() const
2299 buffer()->undo().recordUndoFullBuffer(*this);
2303 void Cursor::recordUndoBufferParams() const
2305 buffer()->undo().recordUndoBufferParams(*this);
2309 void Cursor::recordUndoSelection() const
2312 if (cap::multipleCellsSelected(*this))
2317 buffer()->undo().recordUndo(*this,
2318 selBegin().pit(), selEnd().pit());
2323 void Cursor::checkBufferStructure()
2325 Buffer const * master = buffer()->masterBuffer();
2326 master->tocBackend().updateItem(*this);
2327 if (master != buffer() && !master->hasGuiDelegate())
2328 // In case the master has no gui associated with it,
2329 // the TocItem is not updated (part of bug 5699).
2330 buffer()->tocBackend().updateItem(*this);
2332 // If the last tracked change of the paragraph has just been
2333 // deleted, then we need to recompute the buffer flag
2334 // tracked_changes_present_.
2335 if (inTexted() && paragraph().isChangeUpdateRequired())
2336 disp_.forceChangesUpdate();