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 void Cursor::setCursor(DocIterator const & cur)
199 DocIterator::operator=(cur);
203 void Cursor::setCursorSelectionTo(DocIterator dit)
207 while (i < dit.depth() && i < anchor_.depth() && dit[i] == anchor_[i])
209 if (i != dit.depth()) {
210 // otherwise the cursor is already normal
211 if (i == anchor_.depth())
212 // dit is a proper extension of the anchor_
214 else if (i + 1 < dit.depth()) {
215 // one has dit[i] != anchor_[i] but either dit[i-1] == anchor_[i-1]
216 // or i == 0. Remove excess.
218 if (dit[i] > anchor_[i])
219 // place dit after the inset it was in
228 void Cursor::setCursorToAnchor()
231 DocIterator normal = anchor_;
232 while (depth() < normal.depth())
234 if (depth() < anchor_.depth() && top() <= anchor_[depth() - 1])
241 void Cursor::setCursorData(CursorData const & data)
243 CursorData::operator=(data);
247 bool Cursor::getStatus(FuncRequest const & cmd, FuncStatus & status) const
251 // Try to fix cursor in case it is broken.
254 // Is this a function that acts on inset at point?
255 Inset * inset = cur.nextInset();
256 if (lyxaction.funcHasFlag(cmd.action(), LyXAction::AtPoint)
257 && inset && inset->getStatus(cur, cmd, status))
260 // This is, of course, a mess. Better create a new doc iterator and use
261 // this in Inset::getStatus. This might require an additional
262 // BufferView * arg, though (which should be avoided)
263 //Cursor safe = *this;
265 for ( ; cur.depth(); cur.pop()) {
266 //lyxerr << "\nCursor::getStatus: cmd: " << cmd << endl << *this << endl;
267 // LASSERT: Is it safe to continue here, or should we return?
268 LASSERT(cur.idx() <= cur.lastidx(), /**/);
269 LASSERT(cur.pit() <= cur.lastpit(), /**/);
270 LASSERT(cur.pos() <= cur.lastpos(), /**/);
272 // The inset's getStatus() will return 'true' if it made
273 // a definitive decision on whether it want to handle the
274 // request or not. The result of this decision is put into
275 // the 'status' parameter.
276 if (cur.inset().getStatus(cur, cmd, status)) {
285 void Cursor::saveBeforeDispatchPosXY()
287 getPos(beforeDispatchPosX_, beforeDispatchPosY_);
291 void Cursor::dispatch(FuncRequest const & cmd0)
293 LYXERR(Debug::ACTION, "Cursor::dispatch: cmd: " << cmd0 << '\n' << *this);
298 FuncRequest cmd = cmd0;
301 disp_ = DispatchResult();
305 // Is this a function that acts on inset at point?
306 if (lyxaction.funcHasFlag(cmd.action(), LyXAction::AtPoint)
308 disp_.dispatched(true);
309 disp_.screenUpdate(Update::FitCursor | Update::Force);
310 FuncRequest tmpcmd = cmd;
311 LYXERR(Debug::DEBUG, "Cursor::dispatch: (AtPoint) cmd: "
312 << cmd0 << endl << *this);
313 nextInset()->dispatch(*this, tmpcmd);
314 if (disp_.dispatched()) {
320 // store some values to be used inside of the handlers
321 beforeDispatchCursor_ = *this;
322 for (; depth(); pop(), boundary(false)) {
323 LYXERR(Debug::DEBUG, "Cursor::dispatch: cmd: "
324 << cmd0 << endl << *this);
326 // In any of these cases, the cursor is invalid, and we should
327 // try to save this document rather than crash.
328 LBUFERR(pos() <= lastpos());
329 LBUFERR(idx() <= lastidx());
330 LBUFERR(pit() <= lastpit());
332 // The common case is 'LFUN handled, need update', so make the
333 // LFUN handler's life easier by assuming this as default value.
334 // The handler can reset the update and val flags if necessary.
335 disp_.screenUpdate(Update::FitCursor | Update::Force);
336 disp_.dispatched(true);
337 inset().dispatch(*this, cmd);
338 if (disp_.dispatched())
342 // it completely to get a 'bomb early' behaviour in case this
343 // object will be used again.
344 if (!disp_.dispatched()) {
345 LYXERR(Debug::DEBUG, "RESTORING OLD CURSOR!");
346 // We might have invalidated the cursor when removing an empty
347 // paragraph while the cursor could not be moved out the inset
348 // while we initially thought we could. This might happen when
349 // a multiline inset becomes an inline inset when the second
350 // paragraph is removed.
351 if (safe.pit() > safe.lastpit()) {
352 safe.pit() = safe.lastpit();
353 safe.pos() = safe.lastpos();
356 disp_.screenUpdate(Update::None);
357 disp_.dispatched(false);
359 // restore the previous one because nested Cursor::dispatch calls
360 // are possible which would change it
361 beforeDispatchCursor_ = safe.beforeDispatchCursor_;
365 // NOTE: The code below has been copied to BufferView::dispatch.
366 // If you need to modify this, please update the other one too.
368 // notify insets we just left
370 old.beginUndoGroup();
372 bool badcursor = notifyCursorLeavesOrEnters(old, *this);
375 bv().resetInlineCompletionPos();
382 DispatchResult const & Cursor::result() const
388 BufferView & Cursor::bv() const
397 LBUFERR(depth() >= 1);
402 void Cursor::push(Inset & p)
404 push_back(CursorSlice(p));
405 p.setBuffer(*buffer());
409 void Cursor::pushBackward(Inset & p)
411 LASSERT(!empty(), return);
412 //lyxerr << "Entering inset " << t << " front" << endl;
418 bool Cursor::popBackward()
420 LASSERT(!empty(), return false);
428 bool Cursor::popForward()
430 LASSERT(!empty(), return false);
431 //lyxerr << "Leaving inset from in back" << endl;
432 const pos_type lp = (depth() > 1) ? (*this)[depth() - 2].lastpos() : 0;
436 pos() += lastpos() - lp + 1;
441 int Cursor::currentMode()
443 LASSERT(!empty(), return Inset::UNDECIDED_MODE);
444 for (int i = depth() - 1; i >= 0; --i) {
445 int res = operator[](i).inset().currentMode();
446 bool locked_mode = operator[](i).inset().lockedMode();
447 // Also return UNDECIDED_MODE when the mode is locked,
448 // as in this case it is treated the same as TEXT_MODE
449 if (res != Inset::UNDECIDED_MODE || locked_mode)
452 return Inset::TEXT_MODE;
456 bool Cursor::inCoordCache() const
458 // the root inset is not in cache, but we do not need it.
461 CoordCache::Insets const & icache = bv_->coordCache().getInsets();
462 for (size_t i = 1 ; i < depth() ; ++i)
463 if (!icache.has(&(*this)[i].inset()))
469 void Cursor::getPos(int & x, int & y) const
471 Point p = bv().getPos(*this);
477 Row const & Cursor::textRow() const
479 CursorSlice const & cs = innerTextSlice();
480 ParagraphMetrics const & pm = bv().parMetrics(cs.text(), cs.pit());
481 return pm.getRow(pos(), boundary());
485 void Cursor::resetAnchor()
488 checkNewWordPosition();
492 void Cursor::markNewWordPosition()
494 if (lyxrc.spellcheck_continuously && inTexted() && new_word_.empty()) {
495 FontSpan nw = locateWord(WHOLE_WORD);
496 if (nw.size() == 1) {
497 LYXERR(Debug::DEBUG, "start new word: "
499 << " pos: " << nw.first);
506 void Cursor::clearNewWordPosition()
508 if (!new_word_.empty()) {
509 LYXERR(Debug::DEBUG, "clear new word: "
511 << " pos: " << pos());
517 void Cursor::checkNewWordPosition()
519 if (!lyxrc.spellcheck_continuously || new_word_.empty())
522 clearNewWordPosition();
524 // forget the position of the current new word if
525 // 1) the paragraph changes or
526 // 2) the count of nested insets changes or
527 // 3) the cursor pos is out of paragraph bound
528 if (pit() != new_word_.pit() ||
529 depth() != new_word_.depth() ||
530 new_word_.pos() > new_word_.lastpos()) {
531 clearNewWordPosition();
532 } else if (new_word_.fixIfBroken())
533 // 4) or the remembered position was "broken"
534 clearNewWordPosition();
536 FontSpan nw = locateWord(WHOLE_WORD);
538 FontSpan ow = new_word_.locateWord(WHOLE_WORD);
539 if (nw.intersect(ow).empty())
540 clearNewWordPosition();
542 LYXERR(Debug::DEBUG, "new word: "
544 << " pos: " << nw.first << ".." << nw.last);
546 clearNewWordPosition();
553 bool Cursor::posBackward()
562 bool Cursor::posForward()
564 if (pos() == lastpos())
571 bool Cursor::posVisRight(bool skip_inset)
573 Cursor new_cur = *this; // where we will move to
574 pos_type left_pos; // position visually left of current cursor
575 pos_type right_pos; // position visually right of current cursor
577 getSurroundingPos(left_pos, right_pos);
579 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
581 // Are we at an inset?
582 new_cur.pos() = right_pos;
583 new_cur.boundary(false);
585 text()->checkAndActivateInsetVisual(new_cur, right_pos >= pos(), false)) {
586 // we actually move the cursor at the end of this
587 // function, for now we just keep track of the new
588 // position in new_cur...
589 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
592 // Are we already at rightmost pos in row?
593 else if (text()->empty() || right_pos == -1) {
596 if (!new_cur.posVisToNewRow(false)) {
597 LYXERR(Debug::RTL, "not moving!");
601 // we actually move the cursor at the end of this
602 // function, for now just keep track of the new
603 // position in new_cur...
604 LYXERR(Debug::RTL, "right edge, moving: " << int(new_cur.pit()) << ","
605 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
608 // normal movement to the right
611 // Recall, if the cursor is at position 'x', that
612 // means *before* the character at position 'x'. In
613 // RTL, "before" means "to the right of", in LTR, "to
614 // the left of". So currently our situation is this:
615 // the position to our right is 'right_pos' (i.e.,
616 // we're currently to the left of 'right_pos'). In
617 // order to move to the right, it depends whether or
618 // not the character at 'right_pos' is RTL.
619 bool const new_pos_is_RTL = paragraph().getFontSettings(
620 buffer()->params(), right_pos).isVisibleRightToLeft();
621 // If the character at 'right_pos' *is* LTR, then in
622 // order to move to the right of it, we need to be
623 // *after* 'right_pos', i.e., move to position
625 if (!new_pos_is_RTL) {
626 new_cur.pos() = right_pos + 1;
627 // set the boundary to true in two situations:
629 // 1. if new_pos is now lastpos, and we're in
630 // an RTL paragraph (this means that we're
631 // moving right to the end of an LTR chunk
632 // which is at the end of an RTL paragraph);
633 (new_cur.pos() == lastpos()
634 && paragraph().isRTL(buffer()->params()))
635 // 2. if the position *after* right_pos is RTL
636 // (we want to be *after* right_pos, not
637 // before right_pos + 1!)
638 || paragraph().getFontSettings(buffer()->params(),
639 new_cur.pos()).isVisibleRightToLeft()
641 new_cur.boundary(true);
642 else // set the boundary to false
643 new_cur.boundary(false);
645 // Otherwise (if the character at position 'right_pos'
646 // is RTL), then moving to the right of it is as easy
647 // as setting the new position to 'right_pos'.
649 new_cur.pos() = right_pos;
650 new_cur.boundary(false);
655 bool const moved = new_cur != *this || new_cur.boundary() != boundary();
658 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
659 << (new_cur.boundary() ? " (boundary)" : ""));
667 bool Cursor::posVisLeft(bool skip_inset)
669 Cursor new_cur = *this; // where we will move to
670 pos_type left_pos; // position visually left of current cursor
671 pos_type right_pos; // position visually right of current cursor
673 getSurroundingPos(left_pos, right_pos);
675 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
677 // Are we at an inset?
678 new_cur.pos() = left_pos;
679 new_cur.boundary(false);
681 text()->checkAndActivateInsetVisual(new_cur, left_pos >= pos(), true)) {
682 // we actually move the cursor at the end of this
683 // function, for now we just keep track of the new
684 // position in new_cur...
685 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
688 // Are we already at leftmost pos in row?
689 else if (text()->empty() || left_pos == -1) {
692 if (!new_cur.posVisToNewRow(true)) {
693 LYXERR(Debug::RTL, "not moving!");
697 // we actually move the cursor at the end of this
698 // function, for now just keep track of the new
699 // position in new_cur...
700 LYXERR(Debug::RTL, "left edge, moving: " << int(new_cur.pit()) << ","
701 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
704 // normal movement to the left
707 // Recall, if the cursor is at position 'x', that
708 // means *before* the character at position 'x'. In
709 // RTL, "before" means "to the right of", in LTR, "to
710 // the left of". So currently our situation is this:
711 // the position to our left is 'left_pos' (i.e., we're
712 // currently to the right of 'left_pos'). In order to
713 // move to the left, it depends whether or not the
714 // character at 'left_pos' is RTL.
715 bool const new_pos_is_RTL = paragraph().getFontSettings(
716 buffer()->params(), left_pos).isVisibleRightToLeft();
717 // If the character at 'left_pos' *is* RTL, then in
718 // order to move to the left of it, we need to be
719 // *after* 'left_pos', i.e., move to position
721 if (new_pos_is_RTL) {
722 new_cur.pos() = left_pos + 1;
723 // set the boundary to true in two situations:
725 // 1. if new_pos is now lastpos and we're in
726 // an LTR paragraph (this means that we're
727 // moving left to the end of an RTL chunk
728 // which is at the end of an LTR paragraph);
729 (new_cur.pos() == lastpos()
730 && !paragraph().isRTL(buffer()->params()))
731 // 2. if the position *after* left_pos is not
732 // RTL (we want to be *after* left_pos, not
733 // before left_pos + 1!)
734 || !paragraph().getFontSettings(buffer()->params(),
735 new_cur.pos()).isVisibleRightToLeft()
737 new_cur.boundary(true);
738 else // set the boundary to false
739 new_cur.boundary(false);
741 // Otherwise (if the character at position 'left_pos'
742 // is LTR), then moving to the left of it is as easy
743 // as setting the new position to 'left_pos'.
745 new_cur.pos() = left_pos;
746 new_cur.boundary(false);
751 bool const moved = new_cur != *this || new_cur.boundary() != boundary();
754 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
755 << (new_cur.boundary() ? " (boundary)" : ""));
765 // Return true on success
766 bool findNonVirtual(Row const & row, Row::const_iterator & cit, bool onleft)
769 while (cit != row.begin() && cit->isVirtual())
772 while (cit != row.end() && cit->isVirtual())
775 return cit != row.end() && !cit->isVirtual();
780 void Cursor::getSurroundingPos(pos_type & left_pos, pos_type & right_pos) const
782 // by default, we know nothing.
786 Row const & row = textRow();
787 TextMetrics const & tm = bv_->textMetrics(text());
789 Row::const_iterator cit = tm.findRowElement(row, pos(), boundary(), dummy);
790 // Handle the case of empty row
791 if (cit == row.end()) {
792 if (paragraph().isRTL(buffer()->params()))
793 right_pos = row.pos();
795 left_pos = row.pos() - 1;
799 // skip virtual elements and exit if no non-virtual one exists
800 if (!findNonVirtual(row, cit, !cit->isRTL()))
803 // if the position is at the left side of the element, we have to
804 // look at the previous element
805 if (pos() == cit->left_pos()) {
806 LYXERR(Debug::RTL, "getSurroundingPos(" << pos() << (boundary() ? "b" : "")
807 << "), AT LEFT of *cit=" << *cit);
808 // this one is easy (see common case below)
809 right_pos = pos() - (cit->isRTL() ? 1 : 0);
810 // at the left of the row
811 if (cit == row.begin())
814 if (!findNonVirtual(row, cit, true))
816 // [...[ is the row element, | is cursor position (! with boundary)
817 // [ 1 2 [ is a ltr row element with pos=1 and endpos=3
818 // ] 2 1] is an rtl row element with pos=1 and endpos=3
819 // [ 1 2 [ [|3 4 [ => (2, 3)
820 // or [ 1 2 [ ]!4 3 ] => (2, 4)
821 // or ] 2 1 ] [|3 4 [ => (1, 3)
822 // or ] 4 3 ] ]!2 1 ] => (3, 2)
823 left_pos = cit->right_pos() - (cit->isRTL() ? 0 : 1);
824 // happens with consecutive row of same direction
825 if (left_pos == right_pos) {
826 left_pos += cit->isRTL() ? 1 : -1;
829 // same code but with the element at the right
830 else if (pos() == cit->right_pos()) {
831 LYXERR(Debug::RTL, "getSurroundingPos(" << pos() << (boundary() ? "b" : "")
832 << "), AT RIGHT of *cit=" << *cit);
833 // this one is easy (see common case below)
834 left_pos = pos() - (cit->isRTL() ? 0 : 1);
835 // at the right of the row
836 if (cit + 1 == row.end())
839 if (!findNonVirtual(row, cit, false))
841 // [ 1 2![ [ 3 4 [ => (2, 3)
842 // or [ 1 2![ ] 4 3 ] => (2, 4)
843 // or ] 2 1|] [ 3 4 [ => (1, 3)
844 // or ] 4 3|] ] 2 1 ] => (3, 2)
845 right_pos = cit->left_pos() - (cit->isRTL() ? 1 : 0);
846 // happens with consecutive row of same direction
847 if (right_pos == left_pos)
848 right_pos += cit->isRTL() ? -1 : 1;
850 // common case: both positions are inside the row element
852 // [ 1 2|3 [ => (2, 3)
853 // or ] 3|2 1 ] => (3, 2)
854 left_pos = pos() - (cit->isRTL() ? 0 : 1);
855 right_pos = pos() - (cit->isRTL() ? 1 : 0);
858 // Note that debug message does not catch all early returns above
859 LYXERR(Debug::RTL,"getSurroundingPos(" << pos() << (boundary() ? "b" : "")
860 << ") => (" << left_pos << ", " << right_pos <<")");
864 bool Cursor::posVisToNewRow(bool movingLeft)
866 Paragraph const & par = paragraph();
867 Buffer const & buf = *buffer();
868 Row const & row = textRow();
869 bool par_is_LTR = !par.isRTL(buf.params());
871 // Inside a table, determining whether to move to the next or
872 // previous row should be done based on the table's direction.
873 if (inset().asInsetTabular()) {
874 par_is_LTR = !inset().asInsetTabular()->isRightToLeft(*this);
875 LYXERR(Debug::RTL, "Inside table! par_is_LTR=" << (par_is_LTR ? 1 : 0));
878 // if moving left in an LTR paragraph or moving right in an
879 // RTL one, move to previous row
880 if (par_is_LTR == movingLeft) {
881 if (row.pos() == 0) { // we're at first row in paragraph
882 if (pit() == 0) // no previous paragraph! don't move
884 // move to last pos in previous par
888 } else { // move to previous row in this par
889 pos() = row.pos() - 1; // this is guaranteed to be in previous row
893 // if moving left in an RTL paragraph or moving right in an
894 // LTR one, move to next row
896 if (row.endpos() == lastpos()) { // we're at last row in paragraph
897 if (pit() == lastpit()) // last paragraph! don't move
899 // move to first row in next par
903 } else { // move to next row in this par
904 pos() = row.endpos();
909 // make sure we're at left-/right-most pos in new row
910 posVisToRowExtremity(!movingLeft);
916 void Cursor::posVisToRowExtremity(bool left)
918 LYXERR(Debug::RTL, "entering extremity: " << pit() << "," << pos() << ","
919 << (boundary() ? 1 : 0));
921 TextMetrics const & tm = bv_->textMetrics(text());
922 // Looking for extremities is like clicking on the left or the
924 int x = tm.origin().x_ + (left ? 0 : textRow().width());
926 pos() = tm.getPosNearX(textRow(), x, b);
929 LYXERR(Debug::RTL, "leaving extremity: " << pit() << "," << pos() << ","
930 << (boundary() ? 1 : 0));
934 bool Cursor::reverseDirectionNeeded() const
937 * We determine the directions based on the direction of the
938 * bottom() --- i.e., outermost --- paragraph, because that is
939 * the only way to achieve consistency of the arrow's movements
940 * within a paragraph, and thus avoid situations in which the
943 return bottom().paragraph().isRTL(bv().buffer().params());
947 CursorSlice Cursor::normalAnchor() const
951 // LASSERT: There have been several bugs around this code, that seem
952 // to involve failures to reset the anchor. We can at least not crash
953 // in release mode by resetting it ourselves.
954 if (anchor_.depth() < depth()) {
955 LYXERR0("Cursor is deeper than anchor. PLEASE REPORT.\nCursor is"
957 const_cast<DocIterator &>(anchor_) = *this;
960 CursorSlice normal = anchor_[depth() - 1];
961 if (depth() < anchor_.depth() && top() <= normal) {
962 // anchor is behind cursor -> move anchor behind the inset
969 CursorSlice Cursor::selBegin() const
973 return normalAnchor() < top() ? normalAnchor() : top();
977 CursorSlice Cursor::selEnd() const
981 return normalAnchor() > top() ? normalAnchor() : top();
985 DocIterator Cursor::selectionBegin() const
991 // FIXME: This is a work-around for the problem that
992 // CursorSlice doesn't keep track of the boundary.
993 if (normalAnchor() == top())
994 di = anchor_.boundary() > boundary() ? anchor_ : *this;
996 di = normalAnchor() < top() ? anchor_ : *this;
1002 DocIterator Cursor::selectionEnd() const
1008 // FIXME: This is a work-around for the problem that
1009 // CursorSlice doesn't keep track of the boundary.
1010 if (normalAnchor() == top())
1011 di = anchor_.boundary() < boundary() ? anchor_ : *this;
1013 di = normalAnchor() > top() ? anchor_ : *this;
1015 if (di.depth() > depth()) {
1023 void Cursor::setSelection()
1026 if (idx() == normalAnchor().idx() &&
1027 pit() == normalAnchor().pit() &&
1028 pos() == normalAnchor().pos())
1033 void Cursor::setSelection(DocIterator const & where, int n)
1042 void Cursor::clearSelection()
1045 setWordSelection(false);
1051 void Cursor::setTargetX(int x)
1054 textTargetOffset_ = 0;
1058 int Cursor::x_target() const
1064 void Cursor::clearTargetX()
1067 textTargetOffset_ = 0;
1071 void Cursor::updateTextTargetOffset()
1076 textTargetOffset_ = x - x_target_;
1080 void Cursor::info(odocstream & os) const
1082 for (int i = 1, n = depth(); i < n; ++i) {
1083 operator[](i).inset().infoize(os);
1087 Inset const * inset = prevInset();
1088 // prevInset() can return 0 in certain case.
1090 prevInset()->infoize2(os);
1095 bool Cursor::selHandle(bool sel)
1097 //lyxerr << "Cursor::selHandle" << endl;
1100 if (sel == selection())
1104 cap::saveSelection(*this);
1113 ///////////////////////////////////////////////////////////////////
1116 // The part below is the non-integrated rest of the original math
1117 // cursor. This should be either generalized for texted or moved
1118 // back to mathed (in most cases to InsetMathNest).
1120 ///////////////////////////////////////////////////////////////////
1122 #include "mathed/InsetMathChar.h"
1123 #include "mathed/InsetMathGrid.h"
1124 #include "mathed/InsetMathScript.h"
1125 #include "mathed/InsetMathUnknown.h"
1126 #include "mathed/MathFactory.h"
1127 #include "mathed/MathStream.h"
1128 #include "mathed/MathSupport.h"
1133 bool Cursor::isInside(Inset const * p) const
1135 for (size_t i = 0; i != depth(); ++i)
1136 if (&operator[](i).inset() == p)
1142 void Cursor::leaveInset(Inset const & inset)
1144 for (size_t i = 0; i != depth(); ++i) {
1145 if (&operator[](i).inset() == &inset) {
1153 bool Cursor::openable(MathAtom const & t) const
1164 // we can't move into anything new during selection
1165 if (depth() >= anchor_.depth())
1167 if (t.nucleus() != &anchor_[depth()].inset())
1174 void Cursor::setScreenPos(int x, int /*y*/)
1177 //bruteFind(*this, x, y, 0, bv().workWidth(), 0, bv().workHeight());
1182 void Cursor::plainErase()
1184 cell().erase(pos());
1188 void Cursor::markInsert()
1190 insert(char_type(0));
1194 void Cursor::markErase()
1196 cell().erase(pos());
1200 void Cursor::plainInsert(MathAtom const & t)
1202 cell().insert(pos(), t);
1204 inset().setBuffer(bv_->buffer());
1206 checkBufferStructure();
1210 void Cursor::insert(docstring const & str)
1212 for (char_type c : str)
1217 void Cursor::insert(char_type c)
1219 //lyxerr << "Cursor::insert char '" << c << "'" << endl;
1220 LASSERT(!empty(), return);
1222 cap::selClearOrDel(*this);
1223 insert(new InsetMathChar(c));
1225 text()->insertChar(*this, c);
1230 void Cursor::insert(MathAtom const & t)
1232 //lyxerr << "Cursor::insert MathAtom '" << t << "'" << endl;
1234 cap::selClearOrDel(*this);
1239 void Cursor::insert(Inset * inset0)
1241 LASSERT(inset0, return);
1243 insert(MathAtom(inset0->asInsetMath()));
1245 text()->insertInset(*this, inset0);
1246 inset0->setBuffer(bv_->buffer());
1248 if (inset0->isLabeled())
1249 forceBufferUpdate();
1254 int Cursor::niceInsert(docstring const & t, Parse::flags f, bool enter)
1256 MathData ar(buffer());
1258 if (ar.size() == 1 && (enter || selection()))
1266 void Cursor::niceInsert(MathAtom const & t)
1269 docstring const safe = cap::grabAndEraseSelection(*this);
1271 // If possible, enter the new inset and move the contents of the selection
1272 if (t->isActive()) {
1274 // be careful here: don't use 'pushBackward(t)' as this we need to
1275 // push the clone, not the original
1276 pushBackward(*nextInset());
1277 // We may not use niceInsert here (recursion)
1278 MathData ar(buffer());
1281 } else if (t->asMacro() && !safe.empty()) {
1282 MathData ar(buffer());
1284 docstring const name = t->asMacro()->name();
1285 MacroData const * data = buffer()->getMacro(name);
1286 if (data && data->numargs() - data->optionals() > 0) {
1287 plainInsert(MathAtom(new InsetMathBrace(ar)));
1294 void Cursor::insert(MathData const & ar)
1298 cap::eraseSelection(*this);
1299 cell().insert(pos(), ar);
1301 // FIXME audit setBuffer calls
1302 inset().setBuffer(bv_->buffer());
1306 bool Cursor::backspace()
1309 cap::eraseSelection(*this);
1314 // If empty cell, and not part of a big cell
1315 if (lastpos() == 0 && inset().nargs() == 1) {
1317 // Directly delete empty cell: [|[]] => [|]
1323 // [|], can not delete from inside
1334 if (inMacroMode()) {
1335 InsetMathUnknown * p = activeMacro();
1336 if (p->name().size() > 1) {
1337 p->setName(p->name().substr(0, p->name().size() - 1));
1342 if (pos() != 0 && prevAtom()->nargs() > 0) {
1343 // let's require two backspaces for 'big stuff' and
1344 // highlight on the first
1356 bool Cursor::erase()
1362 cap::eraseSelection(*this);
1366 // delete empty cells if possible
1367 if (pos() == lastpos() && inset().idxDelete(idx()))
1370 // special behaviour when in last position of cell
1371 if (pos() == lastpos()) {
1372 bool one_cell = inset().nargs() == 1;
1373 if (one_cell && lastpos() == 0) {
1375 // Directly delete empty cell: [|[]] => [|]
1381 // [|], can not delete from inside
1386 inset().idxGlue(idx());
1390 // 'clever' UI hack: only erase large items if previously slected
1391 if (pos() != lastpos() && nextAtom()->nargs() > 0) {
1406 DocIterator save = *this;
1407 FuncRequest cmd(selection() ? LFUN_UP_SELECT : LFUN_UP, docstring());
1408 this->dispatch(cmd);
1409 if (disp_.dispatched())
1419 DocIterator save = *this;
1420 FuncRequest cmd(selection() ? LFUN_DOWN_SELECT : LFUN_DOWN, docstring());
1421 this->dispatch(cmd);
1422 if (disp_.dispatched())
1429 bool Cursor::macroModeClose()
1433 InsetMathUnknown * p = activeMacro();
1435 MathData selection(buffer());
1436 asArray(p->selection(), selection);
1437 docstring const s = p->name();
1439 cell().erase(pos());
1441 // do nothing if the macro name is empty
1445 // trigger updates of macros, at least, if no full
1446 // updates take place anyway
1447 screenUpdateFlags(Update::Force);
1449 docstring const name = s.substr(1);
1450 InsetMathNest * const in = inset().asInsetMath()->asNestInset();
1451 if (in && in->interpretString(*this, s))
1453 bool const user_macro = buffer()->getMacro(name, *this, false);
1454 MathAtom atom = user_macro ? MathAtom(new MathMacro(buffer(), name))
1455 : createInsetMath(name, buffer());
1457 // try to put argument into macro, if we just inserted a macro
1458 bool macroArg = false;
1459 MathMacro * atomAsMacro = atom.nucleus()->asMacro();
1461 // macros here are still unfolded (in init mode in fact). So
1462 // we have to resolve the macro here manually and check its arity
1463 // to put the selection behind it if arity > 0.
1464 MacroData const * data = buffer()->getMacro(atomAsMacro->name());
1465 if (!selection.empty() && data && data->numargs() - data->optionals() > 0) {
1467 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 1);
1469 // non-greedy case. Do not touch the arguments behind
1470 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 0);
1473 // insert remembered selection into first argument of a non-macro
1474 else if (atom.nucleus()->nargs() > 0)
1475 atom.nucleus()->cell(0).append(selection);
1477 MathWordList const & words = mathedWordList();
1478 MathWordList::const_iterator it = words.find(name);
1479 bool keep_mathmode = it != words.end() && (it->second.inset == "font"
1480 || it->second.inset == "oldfont"
1481 || it->second.inset == "mbox");
1482 bool ert_macro = !user_macro && it == words.end();
1484 if (in && in->currentMode() == Inset::TEXT_MODE
1485 && atom.nucleus()->currentMode() == Inset::MATH_MODE
1486 && name != from_ascii("ensuremath") && !ert_macro) {
1487 MathAtom at(new InsetMathEnsureMath(buffer()));
1488 at.nucleus()->cell(0).push_back(atom);
1491 } else if (in && in->currentMode() == Inset::MATH_MODE
1492 && atom.nucleus()->currentMode() == Inset::TEXT_MODE
1493 && !keep_mathmode) {
1494 MathAtom at = createInsetMath("text", buffer());
1495 at.nucleus()->cell(0).push_back(atom);
1501 // finally put the macro argument behind, if needed
1503 if (selection.size() > 1 || selection[0]->asScriptInset())
1504 plainInsert(MathAtom(new InsetMathBrace(selection)));
1513 docstring Cursor::macroName()
1515 return inMacroMode() ? activeMacro()->name() : docstring();
1519 void Cursor::handleNest(MathAtom const & a, int c)
1521 //lyxerr << "Cursor::handleNest: " << c << endl;
1523 asArray(cap::grabAndEraseSelection(*this), t.nucleus()->cell(c));
1526 pushBackward(*nextInset());
1530 int Cursor::targetX() const
1532 if (x_target() != -1)
1541 int Cursor::textTargetOffset() const
1543 return textTargetOffset_;
1547 void Cursor::setTargetX()
1556 bool Cursor::inMacroMode() const
1560 if (pos() == 0 || cell().empty())
1562 InsetMathUnknown const * p = prevAtom()->asUnknownInset();
1563 return p && !p->final();
1567 InsetMathUnknown * Cursor::activeMacro()
1569 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1573 InsetMathUnknown const * Cursor::activeMacro() const
1575 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1579 void Cursor::pullArg()
1582 MathData ar = cell();
1583 if (popBackward() && inMathed()) {
1585 cell().insert(pos(), ar);
1588 //formula()->mutateToText();
1593 void Cursor::touch()
1597 DocIterator::const_iterator it = begin();
1598 DocIterator::const_iterator et = end();
1599 for ( ; it != et; ++it)
1605 void Cursor::normalize()
1607 if (idx() > lastidx()) {
1608 lyxerr << "this should not really happen - 1: "
1609 << idx() << ' ' << nargs()
1610 << " in: " << &inset() << endl;
1614 if (pos() > lastpos()) {
1615 lyxerr << "this should not really happen - 2: "
1616 << pos() << ' ' << lastpos() << " in idx: " << idx()
1618 odocstringstream os;
1619 otexrowstream ots(os);
1620 WriteStream wi(ots, false, true, WriteStream::wsDefault);
1621 inset().asInsetMath()->write(wi);
1622 lyxerr << to_utf8(os.str()) << endl;
1628 bool Cursor::upDownInMath(bool up)
1630 // Be warned: The 'logic' implemented in this function is highly
1631 // fragile. A distance of one pixel or a '<' vs '<=' _really
1632 // matters. So fiddle around with it only if you think you know
1633 // what you are doing!
1637 xo = beforeDispatchPosX_;
1639 // check if we had something else in mind, if not, this is the future
1641 if (x_target_ == -1)
1643 else if (inset().asInsetText() && xo - textTargetOffset() != x_target()) {
1644 // In text mode inside the line (not left or right) possibly set a new target_x,
1645 // but only if we are somewhere else than the previous target-offset.
1647 // We want to keep the x-target on subsequent up/down movements
1648 // that cross beyond the end of short lines. Thus a special
1649 // handling when the cursor is at the end of line: Use the new
1650 // x-target only if the old one was before the end of line
1651 // or the old one was after the beginning of the line
1652 bool inRTL = innerParagraph().isRTL(bv().buffer().params());
1656 left = pos() == textRow().endpos();
1657 right = pos() == textRow().pos();
1659 left = pos() == textRow().pos();
1660 right = pos() == textRow().endpos();
1662 if ((!left && !right) ||
1663 (left && !right && xo < x_target_) ||
1664 (!left && right && x_target_ < xo))
1671 // try neigbouring script insets
1673 if (inMathed() && !selection()) {
1676 InsetMathScript const * p = prevAtom()->asScriptInset();
1677 if (p && p->has(up)) {
1679 push(*const_cast<InsetMathScript*>(p));
1680 idx() = p->idxOfScript(up);
1683 // we went in the right direction? Otherwise don't jump into the script
1687 int oy = beforeDispatchPosY_;
1688 if ((!up && y <= oy) ||
1697 if (pos() != lastpos()) {
1698 InsetMathScript const * p = nextAtom()->asScriptInset();
1699 if (p && p->has(up)) {
1700 push(*const_cast<InsetMathScript*>(p));
1701 idx() = p->idxOfScript(up);
1704 // we went in the right direction? Otherwise don't jump into the script
1708 int oy = beforeDispatchPosY_;
1709 if ((!up && y <= oy) ||
1718 // try to find an inset that knows better then we,
1719 if (inset().idxUpDown(*this, up)) {
1720 //lyxerr << "idxUpDown triggered" << endl;
1721 // try to find best position within this inset
1723 setCursor(bruteFind(*this, xo, yo));
1727 // any improvement going just out of inset?
1728 if (popBackward() && inMathed()) {
1729 //lyxerr << "updown: popBackward succeeded" << endl;
1732 int yold = beforeDispatchPosY_;
1734 if (up ? ynew < yold : ynew > yold)
1738 // no success, we are probably at the document top or bottom
1744 bool Cursor::atFirstOrLastRow(bool up)
1746 TextMetrics const & tm = bv_->textMetrics(text());
1747 ParagraphMetrics const & pm = tm.parMetrics(pit());
1750 if (pos() && boundary())
1751 row = pm.pos2row(pos() - 1);
1753 row = pm.pos2row(pos());
1756 if (pit() == 0 && row == 0)
1759 if (pit() + 1 >= int(text()->paragraphs().size()) &&
1760 row + 1 >= int(pm.rows().size()))
1767 bool Cursor::upDownInText(bool up, bool & updateNeeded)
1769 LASSERT(text(), return false);
1775 xo = beforeDispatchPosX_;
1777 // update the targetX - this is here before the "return false"
1778 // to set a new target which can be used by InsetTexts above
1779 // if we cannot move up/down inside this inset anymore
1780 if (x_target_ == -1)
1782 else if (xo - textTargetOffset() != x_target() &&
1783 depth() == beforeDispatchCursor_.depth()) {
1784 // In text mode inside the line (not left or right)
1785 // possibly set a new target_x, but only if we are
1786 // somewhere else than the previous target-offset.
1788 // We want to keep the x-target on subsequent up/down
1789 // movements that cross beyond the end of short lines.
1790 // Thus a special handling when the cursor is at the
1791 // end of line: Use the new x-target only if the old
1792 // one was before the end of line or the old one was
1793 // after the beginning of the line
1794 bool inRTL = innerParagraph().isRTL(bv().buffer().params());
1798 left = pos() == textRow().endpos();
1799 right = pos() == textRow().pos();
1801 left = pos() == textRow().pos();
1802 right = pos() == textRow().endpos();
1804 if ((!left && !right) ||
1805 (left && !right && xo < x_target_) ||
1806 (!left && right && x_target_ < xo))
1813 // first get the current line
1814 TextMetrics & tm = bv_->textMetrics(text());
1815 ParagraphMetrics const & pm = tm.parMetrics(pit());
1817 if (pos() && boundary())
1818 row = pm.pos2row(pos() - 1);
1820 row = pm.pos2row(pos());
1822 if (atFirstOrLastRow(up)) {
1823 // Is there a place for the cursor to go ? If yes, we
1824 // can execute the DEPM, otherwise we should keep the
1825 // paragraph to host the cursor.
1826 Cursor dummy = *this;
1827 bool valid_destination = false;
1828 for(; dummy.depth(); dummy.pop())
1829 if (!dummy.atFirstOrLastRow(up)) {
1830 valid_destination = true;
1834 // will a next dispatch follow and if there is a new
1835 // dispatch will it move the cursor out ?
1836 if (depth() > 1 && valid_destination) {
1837 // The cursor hasn't changed yet. This happens when
1838 // you e.g. move out of an inset. And to give the
1839 // DEPM the possibility of doing something we must
1840 // provide it with two different cursors. (Lgb, vfr)
1842 dummy.pos() = dummy.pos() == 0 ? dummy.lastpos() : 0;
1843 dummy.pit() = dummy.pit() == 0 ? dummy.lastpit() : 0;
1845 updateNeeded |= bv().checkDepm(dummy, *this);
1846 updateTextTargetOffset();
1848 forceBufferUpdate();
1853 // with and without selection are handled differently
1855 int yo = bv().getPos(*this).y_;
1857 // To next/previous row
1859 tm.editXY(*this, xo, yo - textRow().ascent() - 1);
1861 tm.editXY(*this, xo, yo + textRow().descent() + 1);
1864 // This happens when you move out of an inset.
1865 // And to give the DEPM the possibility of doing
1866 // something we must provide it with two different
1868 Cursor dummy = *this;
1871 if (bv().checkDepm(dummy, old)) {
1872 updateNeeded = true;
1873 // Make sure that cur gets back whatever happened to dummy (Lgb)
1876 if (inTexted() && pos() && paragraph().isEnvSeparator(pos() - 1))
1879 // if there is a selection, we stay out of any inset,
1880 // and just jump to the right position:
1886 } else if (pit() > 0) {
1888 TextMetrics & tm = bv_->textMetrics(text());
1889 if (!tm.contains(pit()))
1890 tm.newParMetricsUp();
1891 ParagraphMetrics const & pmcur = tm.parMetrics(pit());
1892 next_row = pmcur.rows().size() - 1;
1895 if (row + 1 < int(pm.rows().size())) {
1897 } else if (pit() + 1 < int(text()->paragraphs().size())) {
1899 TextMetrics & tm = bv_->textMetrics(text());
1900 if (!tm.contains(pit()))
1901 tm.newParMetricsDown();
1906 Row const & real_next_row = tm.parMetrics(pit()).rows()[next_row];
1908 top().pos() = tm.getPosNearX(real_next_row, xo, bound);
1911 updateNeeded |= bv().checkDepm(*this, old);
1915 forceBufferUpdate();
1916 updateTextTargetOffset();
1921 void Cursor::handleFont(string const & font)
1923 LYXERR(Debug::DEBUG, font);
1927 safe = cap::grabAndEraseSelection(*this);
1932 if (lastpos() != 0) {
1933 // something left in the cell
1935 // cursor in first position
1937 } else if (pos() == lastpos()) {
1938 // cursor in last position
1941 // cursor in between. split cell
1942 MathData::iterator bt = cell().begin();
1943 MathAtom at = createInsetMath(from_utf8(font), buffer());
1944 at.nucleus()->cell(0) = MathData(buffer(), bt, bt + pos());
1945 cell().erase(bt, bt + pos());
1950 // nothing left in the cell
1959 void Cursor::message(docstring const & msg) const
1961 disp_.setMessage(msg);
1965 void Cursor::errorMessage(docstring const & msg) const
1967 disp_.setMessage(msg);
1968 disp_.setError(true);
1974 docstring parbreak(Cursor const * cur)
1976 odocstringstream os;
1978 // only add blank line if we're not in a ParbreakIsNewline situation
1979 if (!cur->inset().getLayout().parbreakIsNewline()
1980 && !cur->paragraph().layout().parbreak_is_newline)
1988 docstring Cursor::selectionAsString(bool with_label) const
1994 return cap::grabSelection(*this);
1996 int const label = with_label
1997 ? AS_STR_LABEL | AS_STR_INSETS : AS_STR_INSETS;
1999 idx_type const startidx = selBegin().idx();
2000 idx_type const endidx = selEnd().idx();
2001 if (startidx != endidx) {
2002 // multicell selection
2003 InsetTabular * table = inset().asInsetTabular();
2004 LASSERT(table, return docstring());
2005 return table->asString(startidx, endidx);
2008 ParagraphList const & pars = text()->paragraphs();
2010 pit_type const startpit = selBegin().pit();
2011 pit_type const endpit = selEnd().pit();
2012 size_t const startpos = selBegin().pos();
2013 size_t const endpos = selEnd().pos();
2015 if (startpit == endpit)
2016 return pars[startpit].asString(startpos, endpos, label);
2018 // First paragraph in selection
2019 docstring result = pars[startpit].
2020 asString(startpos, pars[startpit].size(), label)
2023 // The paragraphs in between (if any)
2024 for (pit_type pit = startpit + 1; pit != endpit; ++pit) {
2025 Paragraph const & par = pars[pit];
2026 result += par.asString(0, par.size(), label)
2030 // Last paragraph in selection
2031 result += pars[endpit].asString(0, endpos, label);
2037 docstring Cursor::currentState() const
2040 odocstringstream os;
2042 #ifdef DEVEL_VERSION
2043 InsetMath * math = inset().asInsetMath();
2045 os << _(", Inset: ") << math->id();
2046 os << _(", Cell: ") << idx();
2047 os << _(", Position: ") << pos();
2053 return text()->currentState(*this);
2059 docstring Cursor::getPossibleLabel() const
2061 return inMathed() ? from_ascii("eq:") : text()->getPossibleLabel(*this);
2065 Encoding const * Cursor::getEncoding() const
2069 CursorSlice const & sl = innerTextSlice();
2070 Text const & text = *sl.text();
2071 Font font = text.getPar(sl.pit()).getFont(
2072 bv().buffer().params(), sl.pos(), text.outerFont(sl.pit()));
2073 return font.language()->encoding();
2077 void Cursor::undispatched() const
2079 disp_.dispatched(false);
2083 void Cursor::dispatched() const
2085 disp_.dispatched(true);
2089 void Cursor::screenUpdateFlags(Update::flags f) const
2091 disp_.screenUpdate(f);
2095 void Cursor::forceBufferUpdate() const
2097 disp_.forceBufferUpdate();
2101 void Cursor::clearBufferUpdate() const
2103 disp_.clearBufferUpdate();
2107 bool Cursor::needBufferUpdate() const
2109 return disp_.needBufferUpdate();
2113 void Cursor::noScreenUpdate() const
2115 disp_.screenUpdate(Update::None);
2119 Font Cursor::getFont() const
2121 // The logic here should more or less match to the
2122 // Cursor::setCurrentFont logic, i.e. the cursor height should
2123 // give a hint what will happen if a character is entered.
2125 // HACK. far from being perfect...
2127 CursorSlice const & sl = innerTextSlice();
2128 Text const & text = *sl.text();
2129 Paragraph const & par = text.getPar(sl.pit());
2131 // on boundary, so we are really at the character before
2132 pos_type pos = sl.pos();
2133 if (pos > 0 && boundary())
2136 // on space? Take the font before (only for RTL boundary stay)
2138 TextMetrics const & tm = bv().textMetrics(&text);
2139 if (pos == sl.lastpos()
2140 || (par.isSeparator(pos)
2141 && !tm.isRTLBoundary(sl.pit(), pos)))
2145 // get font at the position
2146 Font font = par.getFont(buffer()->params(), pos,
2147 text.outerFont(sl.pit()));
2153 bool Cursor::fixIfBroken()
2155 bool const broken_cursor = DocIterator::fixIfBroken();
2156 bool const broken_anchor = anchor_.fixIfBroken();
2158 if (broken_cursor || broken_anchor) {
2159 clearNewWordPosition();
2167 void Cursor::sanitize()
2169 setBuffer(&bv_->buffer());
2170 DocIterator::sanitize();
2178 bool notifyCursorLeavesOrEnters(Cursor const & old, Cursor & cur)
2180 // find inset in common
2182 for (i = 0; i < old.depth() && i < cur.depth(); ++i) {
2183 if (&old[i].inset() != &cur[i].inset())
2187 // update words if we just moved to another paragraph
2188 if (i == old.depth() && i == cur.depth()
2189 && !cur.buffer()->isClean()
2190 && cur.inTexted() && old.inTexted()
2191 && cur.pit() != old.pit()) {
2192 old.paragraph().updateWords();
2195 // notify everything on top of the common part in old cursor,
2196 // but stop if the inset claims the cursor to be invalid now
2197 for (size_type j = i; j < old.depth(); ++j) {
2198 Cursor inset_pos = old;
2199 inset_pos.cutOff(j);
2200 if (old[j].inset().notifyCursorLeaves(inset_pos, cur))
2204 // notify everything on top of the common part in new cursor,
2205 // but stop if the inset claims the cursor to be invalid now
2206 for (; i < cur.depth(); ++i) {
2207 if (cur[i].inset().notifyCursorEnters(cur))
2215 void Cursor::setCurrentFont()
2217 CursorSlice const & cs = innerTextSlice();
2218 Paragraph const & par = cs.paragraph();
2219 pos_type cpit = cs.pit();
2220 pos_type cpos = cs.pos();
2221 Text const & ctext = *cs.text();
2222 TextMetrics const & tm = bv().textMetrics(&ctext);
2224 // are we behind previous char in fact? -> go to that char
2225 if (cpos > 0 && boundary())
2228 // find position to take the font from
2230 // paragraph end? -> font of last char
2231 if (cpos == lastpos())
2233 // on space? -> look at the words in front of space
2234 else if (cpos > 0 && par.isSeparator(cpos)) {
2235 // abc| def -> font of c
2236 // abc |[WERBEH], i.e. boundary==true -> font of c
2237 // abc [WERBEH]| def, font of the space
2238 if (!tm.isRTLBoundary(cpit, cpos))
2244 BufferParams const & bufparams = buffer()->params();
2245 current_font = par.getFontSettings(bufparams, cpos);
2246 real_current_font = tm.displayFont(cpit, cpos);
2248 // special case for paragraph end
2249 if (cs.pos() == lastpos()
2250 && tm.isRTLBoundary(cpit, cs.pos())
2252 Language const * lang = par.getParLanguage(bufparams);
2253 current_font.setLanguage(lang);
2254 current_font.fontInfo().setNumber(FONT_OFF);
2255 real_current_font.setLanguage(lang);
2256 real_current_font.fontInfo().setNumber(FONT_OFF);
2261 bool Cursor::textUndo()
2263 if (!buffer()->undo().textUndo(*this))
2270 bool Cursor::textRedo()
2272 if (!buffer()->undo().textRedo(*this))
2279 void Cursor::finishUndo() const
2281 buffer()->undo().finishUndo();
2285 void Cursor::beginUndoGroup() const
2287 buffer()->undo().beginUndoGroup(*this);
2291 void Cursor::endUndoGroup() const
2293 buffer()->undo().endUndoGroup(*this);
2297 void Cursor::recordUndo(pit_type from, pit_type to) const
2299 buffer()->undo().recordUndo(*this, from, to);
2303 void Cursor::recordUndo(pit_type from) const
2305 buffer()->undo().recordUndo(*this, from, pit());
2309 void Cursor::recordUndo(UndoKind kind) const
2311 buffer()->undo().recordUndo(*this, kind);
2315 void Cursor::recordUndoInset(Inset const * in) const
2317 buffer()->undo().recordUndoInset(*this, in);
2321 void Cursor::recordUndoFullBuffer() const
2323 buffer()->undo().recordUndoFullBuffer(*this);
2327 void Cursor::recordUndoBufferParams() const
2329 buffer()->undo().recordUndoBufferParams(*this);
2333 void Cursor::recordUndoSelection() const
2336 if (cap::multipleCellsSelected(*this))
2341 buffer()->undo().recordUndo(*this,
2342 selBegin().pit(), selEnd().pit());
2347 void Cursor::checkBufferStructure()
2349 Buffer const * master = buffer()->masterBuffer();
2350 master->tocBackend().updateItem(*this);
2351 if (master != buffer() && !master->hasGuiDelegate())
2352 // In case the master has no gui associated with it,
2353 // the TocItem is not updated (part of bug 5699).
2354 buffer()->tocBackend().updateItem(*this);
2356 // If the last tracked change of the paragraph has just been
2357 // deleted, then we need to recompute the buffer flag
2358 // tracked_changes_present_.
2359 if (inTexted() && paragraph().isChangeUpdateRequired())
2360 disp_.forceChangesUpdate();