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.
19 #include "BufferView.h"
20 #include "CoordCache.h"
22 #include "CutAndPaste.h"
23 #include "DispatchResult.h"
27 #include "FuncRequest.h"
30 #include "LyXAction.h"
32 #include "Paragraph.h"
33 #include "ParIterator.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/InsetMathScript.h"
51 #include "mathed/MacroTable.h"
52 #include "mathed/MathData.h"
53 #include "mathed/MathMacro.h"
55 #include "support/bind.h"
68 // Find position closest to (x, y) in cell given by iter.
69 // Used only in mathed
70 DocIterator bruteFind2(Cursor const & c, int x, int y)
72 double best_dist = numeric_limits<double>::max();
79 et.top().pos() = et.top().asInsetMath()->cell(et.top().idx()).size();
80 for (size_t i = 0;; ++i) {
83 Inset const * inset = &it.inset();
84 CoordCache const & cache = c.bv().coordCache();
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 (!cache.getInsets().has(inset)) {
95 Point const o = cache.getInsets().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) {
118 /// moves position closest to (x, y) in given box
119 bool bruteFind(Cursor & cursor,
120 int x, int y, int xlow, int xhigh, int ylow, int yhigh)
122 LASSERT(!cursor.empty(), return false);
123 Inset & inset = cursor[0].inset();
124 BufferView & bv = cursor.bv();
126 CoordCache::InnerParPosCache const & cache =
127 bv.coordCache().getParPos().find(cursor.bottom().text())->second;
128 // Get an iterator on the first paragraph in the cache
129 DocIterator it(inset);
130 it.push_back(CursorSlice(inset));
131 it.pit() = cache.begin()->first;
132 // Get an iterator after the last paragraph in the cache
133 DocIterator et(inset);
134 et.push_back(CursorSlice(inset));
135 et.pit() = prev(cache.end(), 1)->first;
136 if (et.pit() >= et.lastpit())
137 et = doc_iterator_end(inset);
141 double best_dist = numeric_limits<double>::max();
142 DocIterator best_cursor = et;
144 for ( ; it != et; it.forwardPos(true)) {
145 // avoid invalid nesting when selecting
146 if (!cursor.selection() || positionable(it, cursor.anchor_)) {
147 Point p = bv.getPos(it, false);
150 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
151 double const dx = xo - x;
152 double const dy = yo - y;
153 double const d = dx * dx + dy * dy;
154 // '<=' in order to take the last possible position
155 // this is important for clicking behind \sum in e.g. '\sum_i a'
156 if (d <= best_dist) {
157 // lyxerr << "*" << endl;
165 if (best_cursor != et) {
166 cursor.setCursor(best_cursor);
175 /// moves position closest to (x, y) in given box
176 bool bruteFind3(Cursor & cur, int x, int y, bool up)
178 BufferView & bv = cur.bv();
179 int ylow = up ? 0 : y + 1;
180 int yhigh = up ? y - 1 : bv.workHeight();
182 int xhigh = bv.workWidth();
184 // FIXME: bit more work needed to get 'from' and 'to' right.
185 pit_type from = cur.bottom().pit();
186 //pit_type to = cur.bottom().pit();
187 //lyxerr << "Pit start: " << from << endl;
189 //lyxerr << "bruteFind3: x: " << x << " y: " << y
190 // << " xlow: " << xlow << " xhigh: " << xhigh
191 // << " ylow: " << ylow << " yhigh: " << yhigh
193 DocIterator it = doc_iterator_begin(cur.buffer());
195 DocIterator et = doc_iterator_end(cur.buffer());
197 double best_dist = numeric_limits<double>::max();
198 DocIterator best_cursor = et;
200 for ( ; it != et; it.forwardPos()) {
201 // avoid invalid nesting when selecting
202 if (bv.cursorStatus(it) == CUR_INSIDE
203 && (!cur.selection() || positionable(it, cur.realAnchor()))) {
204 // If this function is ever used again, check
205 // whether this is the same as "bv.getPos(it,
206 // false)" with boundary = false.
207 Point p = bv.getPos(it);
210 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
211 double const dx = xo - x;
212 double const dy = yo - y;
213 double const d = dx * dx + dy * dy;
214 //lyxerr << "itx: " << xo << " ity: " << yo << " d: " << d
215 // << " dx: " << dx << " dy: " << dy
216 // << " idx: " << it.idx() << " pos: " << it.pos()
219 // '<=' in order to take the last possible position
220 // this is important for clicking behind \sum in e.g. '\sum_i a'
221 if (d <= best_dist) {
222 //lyxerr << "*" << endl;
230 //lyxerr << "best_dist: " << best_dist << " cur:\n" << best_cursor << endl;
231 if (best_cursor == et)
233 cur.setCursor(best_cursor);
240 CursorData::CursorData()
241 : DocIterator(), anchor_(),
242 selection_(false), mark_(false), word_selection_(false),
243 logicalpos_(false), current_font(inherit_font),
244 autocorrect_(false), macromode_(false)
248 CursorData::CursorData(Buffer * buffer)
249 : DocIterator(buffer), anchor_(),
250 selection_(false), mark_(false), word_selection_(false),
251 logicalpos_(false), current_font(inherit_font),
252 autocorrect_(false), macromode_(false)
256 CursorData::CursorData(DocIterator const & dit)
257 : DocIterator(dit), anchor_(),
258 selection_(false), mark_(false), word_selection_(false),
259 logicalpos_(false), current_font(inherit_font),
260 autocorrect_(false), macromode_(false)
266 ostream & operator<<(ostream & os, CursorData const & cur)
268 os << "\n cursor: | anchor:\n";
269 for (size_t i = 0, n = cur.depth(); i != n; ++i) {
270 os << " " << cur[i] << " | ";
271 if (i < cur.anchor_.depth())
272 os << cur.anchor_[i];
274 os << "-------------------------------";
277 for (size_t i = cur.depth(), n = cur.anchor_.depth(); i < n; ++i) {
278 os << "------------------------------- | " << cur.anchor_[i] << "\n";
280 os << " selection: " << cur.selection_
281 // << " x_target: " << cur.x_target_
282 << " boundary: " << cur.boundary() << endl;
287 LyXErr & operator<<(LyXErr & os, CursorData const & cur)
294 // be careful: this is called from the bv's constructor, too, so
295 // bv functions are not yet available!
296 Cursor::Cursor(BufferView & bv)
297 : CursorData(&bv.buffer()), bv_(&bv),
298 x_target_(-1), textTargetOffset_(0),
299 beforeDispatchPosX_(0), beforeDispatchPosY_(0)
306 push_back(CursorSlice(buffer()->inset()));
307 anchor_ = doc_iterator_begin(buffer());
309 new_word_ = doc_iterator_begin(buffer());
317 // this (intentionally) does neither touch anchor nor selection status
318 void Cursor::setCursor(DocIterator const & cur)
320 DocIterator::operator=(cur);
324 void Cursor::setCursorToAnchor()
327 DocIterator normal = anchor_;
328 while (depth() < normal.depth())
330 if (depth() < anchor_.depth() && top() <= anchor_[depth() - 1])
337 void Cursor::setCursorData(CursorData const & data)
339 CursorData::operator=(data);
343 bool Cursor::getStatus(FuncRequest const & cmd, FuncStatus & status) const
347 // Try to fix cursor in case it is broken.
350 // Is this a function that acts on inset at point?
351 Inset * inset = cur.nextInset();
352 if (lyxaction.funcHasFlag(cmd.action(), LyXAction::AtPoint)
353 && inset && inset->getStatus(cur, cmd, status))
356 // This is, of course, a mess. Better create a new doc iterator and use
357 // this in Inset::getStatus. This might require an additional
358 // BufferView * arg, though (which should be avoided)
359 //Cursor safe = *this;
361 for ( ; cur.depth(); cur.pop()) {
362 //lyxerr << "\nCursor::getStatus: cmd: " << cmd << endl << *this << endl;
363 // LASSERT: Is it safe to continue here, or should we return?
364 LASSERT(cur.idx() <= cur.lastidx(), /**/);
365 LASSERT(cur.pit() <= cur.lastpit(), /**/);
366 LASSERT(cur.pos() <= cur.lastpos(), /**/);
368 // The inset's getStatus() will return 'true' if it made
369 // a definitive decision on whether it want to handle the
370 // request or not. The result of this decision is put into
371 // the 'status' parameter.
372 if (cur.inset().getStatus(cur, cmd, status)) {
381 void Cursor::saveBeforeDispatchPosXY()
383 getPos(beforeDispatchPosX_, beforeDispatchPosY_);
387 void Cursor::dispatch(FuncRequest const & cmd0)
389 LYXERR(Debug::ACTION, "Cursor::dispatch: cmd: " << cmd0 << '\n' << *this);
394 FuncRequest cmd = cmd0;
397 disp_ = DispatchResult();
401 // Is this a function that acts on inset at point?
402 if (lyxaction.funcHasFlag(cmd.action(), LyXAction::AtPoint)
404 disp_.dispatched(true);
405 disp_.screenUpdate(Update::FitCursor | Update::Force);
406 FuncRequest tmpcmd = cmd;
407 LYXERR(Debug::DEBUG, "Cursor::dispatch: (AtPoint) cmd: "
408 << cmd0 << endl << *this);
409 nextInset()->dispatch(*this, tmpcmd);
410 if (disp_.dispatched()) {
416 // store some values to be used inside of the handlers
417 beforeDispatchCursor_ = *this;
418 for (; depth(); pop(), boundary(false)) {
419 LYXERR(Debug::DEBUG, "Cursor::dispatch: cmd: "
420 << cmd0 << endl << *this);
422 // In any of these cases, the cursor is invalid, and we should
423 // try to save this document rather than crash.
424 LBUFERR(pos() <= lastpos());
425 LBUFERR(idx() <= lastidx());
426 LBUFERR(pit() <= lastpit());
428 // The common case is 'LFUN handled, need update', so make the
429 // LFUN handler's life easier by assuming this as default value.
430 // The handler can reset the update and val flags if necessary.
431 disp_.screenUpdate(Update::FitCursor | Update::Force);
432 disp_.dispatched(true);
433 inset().dispatch(*this, cmd);
434 if (disp_.dispatched())
438 // it completely to get a 'bomb early' behaviour in case this
439 // object will be used again.
440 if (!disp_.dispatched()) {
441 LYXERR(Debug::DEBUG, "RESTORING OLD CURSOR!");
442 // We might have invalidated the cursor when removing an empty
443 // paragraph while the cursor could not be moved out the inset
444 // while we initially thought we could. This might happen when
445 // a multiline inset becomes an inline inset when the second
446 // paragraph is removed.
447 if (safe.pit() > safe.lastpit()) {
448 safe.pit() = safe.lastpit();
449 safe.pos() = safe.lastpos();
452 disp_.screenUpdate(Update::None);
453 disp_.dispatched(false);
455 // restore the previous one because nested Cursor::dispatch calls
456 // are possible which would change it
457 beforeDispatchCursor_ = safe.beforeDispatchCursor_;
461 // NOTE: The code below has been copied to BufferView::dispatch.
462 // If you need to modify this, please update the other one too.
464 // notify insets we just left
466 old.beginUndoGroup();
468 bool badcursor = notifyCursorLeavesOrEnters(old, *this);
471 bv().resetInlineCompletionPos();
478 DispatchResult const & Cursor::result() const
484 BufferView & Cursor::bv() const
493 LBUFERR(depth() >= 1);
498 void Cursor::push(Inset & p)
500 push_back(CursorSlice(p));
501 p.setBuffer(*buffer());
505 void Cursor::pushBackward(Inset & p)
507 LASSERT(!empty(), return);
508 //lyxerr << "Entering inset " << t << " front" << endl;
514 bool Cursor::popBackward()
516 LASSERT(!empty(), return false);
524 bool Cursor::popForward()
526 LASSERT(!empty(), return false);
527 //lyxerr << "Leaving inset from in back" << endl;
528 const pos_type lp = (depth() > 1) ? (*this)[depth() - 2].lastpos() : 0;
532 pos() += lastpos() - lp + 1;
537 int Cursor::currentMode()
539 LASSERT(!empty(), return Inset::UNDECIDED_MODE);
540 for (int i = depth() - 1; i >= 0; --i) {
541 int res = operator[](i).inset().currentMode();
542 bool locked_mode = operator[](i).inset().lockedMode();
543 // Also return UNDECIDED_MODE when the mode is locked,
544 // as in this case it is treated the same as TEXT_MODE
545 if (res != Inset::UNDECIDED_MODE || locked_mode)
548 return Inset::TEXT_MODE;
552 void Cursor::getPos(int & x, int & y) const
554 Point p = bv().getPos(*this);
560 Row const & Cursor::textRow() const
562 CursorSlice const & cs = innerTextSlice();
563 ParagraphMetrics const & pm = bv().parMetrics(cs.text(), cs.pit());
564 return pm.getRow(pos(), boundary());
568 void Cursor::resetAnchor()
571 checkNewWordPosition();
575 void Cursor::markNewWordPosition()
577 if (lyxrc.spellcheck_continuously && inTexted() && new_word_.empty()) {
578 FontSpan nw = locateWord(WHOLE_WORD);
579 if (nw.size() == 1) {
580 LYXERR(Debug::DEBUG, "start new word: "
582 << " pos: " << nw.first);
589 void Cursor::clearNewWordPosition()
591 if (!new_word_.empty()) {
592 LYXERR(Debug::DEBUG, "clear new word: "
594 << " pos: " << pos());
600 void Cursor::checkNewWordPosition()
602 if (!lyxrc.spellcheck_continuously || new_word_.empty())
605 clearNewWordPosition();
607 // forget the position of the current new word if
608 // 1) the paragraph changes or
609 // 2) the count of nested insets changes or
610 // 3) the cursor pos is out of paragraph bound
611 if (pit() != new_word_.pit() ||
612 depth() != new_word_.depth() ||
613 new_word_.pos() > new_word_.lastpos()) {
614 clearNewWordPosition();
615 } else if (new_word_.fixIfBroken())
616 // 4) or the remembered position was "broken"
617 clearNewWordPosition();
619 FontSpan nw = locateWord(WHOLE_WORD);
621 FontSpan ow = new_word_.locateWord(WHOLE_WORD);
622 if (nw.intersect(ow).empty())
623 clearNewWordPosition();
625 LYXERR(Debug::DEBUG, "new word: "
627 << " pos: " << nw.first << ".." << nw.last);
629 clearNewWordPosition();
636 bool Cursor::posBackward()
645 bool Cursor::posForward()
647 if (pos() == lastpos())
654 bool Cursor::posVisRight(bool skip_inset)
656 Cursor new_cur = *this; // where we will move to
657 pos_type left_pos; // position visually left of current cursor
658 pos_type right_pos; // position visually right of current cursor
660 getSurroundingPos(left_pos, right_pos);
662 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
664 // Are we at an inset?
665 new_cur.pos() = right_pos;
666 new_cur.boundary(false);
668 text()->checkAndActivateInsetVisual(new_cur, right_pos >= pos(), false)) {
669 // we actually move the cursor at the end of this
670 // function, for now we just keep track of the new
671 // position in new_cur...
672 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
675 // Are we already at rightmost pos in row?
676 else if (text()->empty() || right_pos == -1) {
679 if (!new_cur.posVisToNewRow(false)) {
680 LYXERR(Debug::RTL, "not moving!");
684 // we actually move the cursor at the end of this
685 // function, for now just keep track of the new
686 // position in new_cur...
687 LYXERR(Debug::RTL, "right edge, moving: " << int(new_cur.pit()) << ","
688 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
691 // normal movement to the right
694 // Recall, if the cursor is at position 'x', that
695 // means *before* the character at position 'x'. In
696 // RTL, "before" means "to the right of", in LTR, "to
697 // the left of". So currently our situation is this:
698 // the position to our right is 'right_pos' (i.e.,
699 // we're currently to the left of 'right_pos'). In
700 // order to move to the right, it depends whether or
701 // not the character at 'right_pos' is RTL.
702 bool const new_pos_is_RTL = paragraph().getFontSettings(
703 buffer()->params(), right_pos).isVisibleRightToLeft();
704 // If the character at 'right_pos' *is* LTR, then in
705 // order to move to the right of it, we need to be
706 // *after* 'right_pos', i.e., move to position
708 if (!new_pos_is_RTL) {
709 new_cur.pos() = right_pos + 1;
710 // set the boundary to true in two situations:
712 // 1. if new_pos is now lastpos, and we're in
713 // an RTL paragraph (this means that we're
714 // moving right to the end of an LTR chunk
715 // which is at the end of an RTL paragraph);
716 (new_cur.pos() == lastpos()
717 && paragraph().isRTL(buffer()->params()))
718 // 2. if the position *after* right_pos is RTL
719 // (we want to be *after* right_pos, not
720 // before right_pos + 1!)
721 || paragraph().getFontSettings(buffer()->params(),
722 new_cur.pos()).isVisibleRightToLeft()
724 new_cur.boundary(true);
725 else // set the boundary to false
726 new_cur.boundary(false);
728 // Otherwise (if the character at position 'right_pos'
729 // is RTL), then moving to the right of it is as easy
730 // as setting the new position to 'right_pos'.
732 new_cur.pos() = right_pos;
733 new_cur.boundary(false);
738 bool moved = (new_cur.pos() != pos()
739 || new_cur.pit() != pit()
740 || new_cur.boundary() != boundary()
741 || &new_cur.inset() != &inset());
744 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
745 << (new_cur.boundary() ? " (boundary)" : ""));
753 bool Cursor::posVisLeft(bool skip_inset)
755 Cursor new_cur = *this; // where we will move to
756 pos_type left_pos; // position visually left of current cursor
757 pos_type right_pos; // position visually right of current cursor
759 getSurroundingPos(left_pos, right_pos);
761 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
763 // Are we at an inset?
764 new_cur.pos() = left_pos;
765 new_cur.boundary(false);
767 text()->checkAndActivateInsetVisual(new_cur, left_pos >= pos(), true)) {
768 // we actually move the cursor at the end of this
769 // function, for now we just keep track of the new
770 // position in new_cur...
771 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
774 // Are we already at leftmost pos in row?
775 else if (text()->empty() || left_pos == -1) {
778 if (!new_cur.posVisToNewRow(true)) {
779 LYXERR(Debug::RTL, "not moving!");
783 // we actually move the cursor at the end of this
784 // function, for now just keep track of the new
785 // position in new_cur...
786 LYXERR(Debug::RTL, "left edge, moving: " << int(new_cur.pit()) << ","
787 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
790 // normal movement to the left
793 // Recall, if the cursor is at position 'x', that
794 // means *before* the character at position 'x'. In
795 // RTL, "before" means "to the right of", in LTR, "to
796 // the left of". So currently our situation is this:
797 // the position to our left is 'left_pos' (i.e., we're
798 // currently to the right of 'left_pos'). In order to
799 // move to the left, it depends whether or not the
800 // character at 'left_pos' is RTL.
801 bool const new_pos_is_RTL = paragraph().getFontSettings(
802 buffer()->params(), left_pos).isVisibleRightToLeft();
803 // If the character at 'left_pos' *is* RTL, then in
804 // order to move to the left of it, we need to be
805 // *after* 'left_pos', i.e., move to position
807 if (new_pos_is_RTL) {
808 new_cur.pos() = left_pos + 1;
809 // set the boundary to true in two situations:
811 // 1. if new_pos is now lastpos and we're in
812 // an LTR paragraph (this means that we're
813 // moving left to the end of an RTL chunk
814 // which is at the end of an LTR paragraph);
815 (new_cur.pos() == lastpos()
816 && !paragraph().isRTL(buffer()->params()))
817 // 2. if the position *after* left_pos is not
818 // RTL (we want to be *after* left_pos, not
819 // before left_pos + 1!)
820 || !paragraph().getFontSettings(buffer()->params(),
821 new_cur.pos()).isVisibleRightToLeft()
823 new_cur.boundary(true);
824 else // set the boundary to false
825 new_cur.boundary(false);
827 // Otherwise (if the character at position 'left_pos'
828 // is LTR), then moving to the left of it is as easy
829 // as setting the new position to 'left_pos'.
831 new_cur.pos() = left_pos;
832 new_cur.boundary(false);
837 bool moved = (new_cur.pos() != pos()
838 || new_cur.pit() != pit()
839 || new_cur.boundary() != boundary());
842 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
843 << (new_cur.boundary() ? " (boundary)" : ""));
853 // Return true on success
854 bool findNonVirtual(Row const & row, Row::const_iterator & cit, bool onleft)
857 while (cit != row.begin() && cit->isVirtual())
860 while (cit != row.end() && cit->isVirtual())
863 return cit != row.end() && !cit->isVirtual();
868 void Cursor::getSurroundingPosNew(pos_type & left_pos, pos_type & right_pos) const
870 // by default, we know nothing.
874 Row const & row = textRow();
875 TextMetrics const & tm = bv_->textMetrics(text());
877 Row::const_iterator cit = tm.findRowElement(row, pos(), boundary(), dummy);
878 // Handle the case of empty row
879 if (cit == row.end()) {
880 if (paragraph().isRTL(buffer()->params()))
881 right_pos = row.pos();
883 left_pos = row.pos() - 1;
887 // skip virtual elements and exit if no non-virtual one exists
888 if (!findNonVirtual(row, cit, !cit->isRTL()))
891 // if the position is at the left side of the element, we have to
892 // look at the previous element
893 if (pos() == cit->left_pos()) {
894 LYXERR(Debug::RTL, "getSurroundingPos(" << pos() << (boundary() ? "b" : "")
895 << "), AT LEFT of *cit=" << *cit);
896 // this one is easy (see common case below)
897 right_pos = pos() - (cit->isRTL() ? 1 : 0);
898 // at the left of the row
899 if (cit == row.begin())
902 if (!findNonVirtual(row, cit, true))
904 // [...[ is the row element, | is cursor position (! with boundary)
905 // [ 1 2 [ is a ltr row element with pos=1 and endpos=3
906 // ] 2 1] is an rtl row element with pos=1 and endpos=3
907 // [ 1 2 [ [|3 4 [ => (2, 3)
908 // or [ 1 2 [ ]!4 3 ] => (2, 4)
909 // or ] 2 1 ] [|3 4 [ => (1, 3)
910 // or ] 4 3 ] ]!2 1 ] => (3, 2)
911 left_pos = cit->right_pos() - (cit->isRTL() ? 0 : 1);
912 // happens with consecutive row of same direction
913 if (left_pos == right_pos) {
914 left_pos += cit->isRTL() ? 1 : -1;
917 // same code but with the element at the right
918 else if (pos() == cit->right_pos()) {
919 LYXERR(Debug::RTL, "getSurroundingPos(" << pos() << (boundary() ? "b" : "")
920 << "), AT RIGHT of *cit=" << *cit);
921 // this one is easy (see common case below)
922 left_pos = pos() - (cit->isRTL() ? 0 : 1);
923 // at the right of the row
924 if (cit + 1 == row.end())
927 if (!findNonVirtual(row, cit, false))
929 // [ 1 2![ [ 3 4 [ => (2, 3)
930 // or [ 1 2![ ] 4 3 ] => (2, 4)
931 // or ] 2 1|] [ 3 4 [ => (1, 3)
932 // or ] 4 3|] ] 2 1 ] => (3, 2)
933 right_pos = cit->left_pos() - (cit->isRTL() ? 1 : 0);
934 // happens with consecutive row of same direction
935 if (right_pos == left_pos)
936 right_pos += cit->isRTL() ? -1 : 1;
938 // common case: both positions are inside the row element
940 // [ 1 2|3 [ => (2, 3)
941 // or ] 3|2 1 ] => (3, 2)
942 left_pos = pos() - (cit->isRTL() ? 0 : 1);
943 right_pos = pos() - (cit->isRTL() ? 1 : 0);
948 void Cursor::getSurroundingPosOrig(pos_type & left_pos, pos_type & right_pos) const
950 // preparing bidi tables
951 Paragraph const & par = paragraph();
952 Buffer const & buf = *buffer();
953 Row const & row = textRow();
955 bidi.computeTables(par, buf, row);
957 LYXERR(Debug::RTL, "bidi: " << row.pos() << "--" << row.endpos());
959 // The cursor is painted *before* the character at pos(), or,
960 // if 'boundary' is true, *after* the character at (pos() -
961 // 1). So we already have one known position around the
963 pos_type const known_pos = boundary() && pos() > 0 ? pos() - 1 : pos();
965 // edge case: if we're at the end of the paragraph, things are
966 // a little different (because lastpos is a position which
967 // does not really "exist" --- there's no character there
969 if (known_pos == lastpos()) {
970 if (par.isRTL(buf.params())) {
972 right_pos = bidi.vis2log(row.pos());
976 left_pos = bidi.vis2log(row.endpos() - 1);
981 // Whether 'known_pos' is to the left or to the right of the
982 // cursor depends on whether it is an RTL or LTR character...
983 bool const cur_is_RTL =
984 par.getFontSettings(buf.params(), known_pos).isVisibleRightToLeft();
985 // ... in the following manner:
986 // For an RTL character, "before"
987 // means "to the right" and "after" means "to the left"; and
988 // for LTR, it's the reverse. So, 'known_pos' is to the right
989 // of the cursor if (RTL && boundary) or (!RTL && !boundary):
990 bool const known_pos_on_right = cur_is_RTL == boundary();
992 // So we now know one of the positions surrounding the cursor.
993 // Let's determine the other one:
994 if (known_pos_on_right) {
995 right_pos = known_pos;
996 // *visual* position of 'left_pos':
997 pos_type v_left_pos = bidi.log2vis(right_pos) - 1;
998 // If the position we just identified as 'left_pos' is
999 // a "skipped separator" (a separator which is at the
1000 // logical end of a row, except for the last row in a
1001 // paragraph; such separators are not painted, so they
1002 // "are not really there"; note that in bidi text,
1003 // such a separator could appear visually in the
1004 // middle of a row), set 'left_pos' to the *next*
1005 // position to the left.
1006 if (bidi.inRange(v_left_pos)
1007 && bidi.vis2log(v_left_pos) + 1 == row.endpos()
1008 && row.endpos() < lastpos()
1009 && par.isSeparator(bidi.vis2log(v_left_pos)))
1012 // calculate the logical position of 'left_pos', if in row
1013 if (!bidi.inRange(v_left_pos))
1016 left_pos = bidi.vis2log(v_left_pos);
1017 // If the position we identified as 'right_pos' is a
1018 // "skipped separator", set 'right_pos' to the *next*
1019 // position to the right.
1020 if (right_pos + 1 == row.endpos() && row.endpos() < lastpos()
1021 && par.isSeparator(right_pos)) {
1022 pos_type const v_right_pos = bidi.log2vis(right_pos) + 1;
1023 if (!bidi.inRange(v_right_pos))
1026 right_pos = bidi.vis2log(v_right_pos);
1029 // known_pos is on the left
1030 left_pos = known_pos;
1031 // *visual* position of 'right_pos'
1032 pos_type v_right_pos = bidi.log2vis(left_pos) + 1;
1033 // If the position we just identified as 'right_pos'
1034 // is a "skipped separator", set 'right_pos' to the
1035 // *next* position to the right.
1036 if (bidi.inRange(v_right_pos)
1037 && bidi.vis2log(v_right_pos) + 1 == row.endpos()
1038 && row.endpos() < lastpos()
1039 && par.isSeparator(bidi.vis2log(v_right_pos)))
1042 // calculate the logical position of 'right_pos', if in row
1043 if (!bidi.inRange(v_right_pos))
1046 right_pos = bidi.vis2log(v_right_pos);
1047 // If the position we identified as 'left_pos' is a
1048 // "skipped separator", set 'left_pos' to the *next*
1049 // position to the left.
1050 if (left_pos + 1 == row.endpos() && row.endpos() < lastpos()
1051 && par.isSeparator(left_pos)) {
1052 pos_type const v_left_pos = bidi.log2vis(left_pos) - 1;
1053 if (!bidi.inRange(v_left_pos))
1056 left_pos = bidi.vis2log(v_left_pos);
1063 void Cursor::getSurroundingPos(pos_type & left_pos, pos_type & right_pos) const
1065 // Check result wrt old implementation
1066 // FIXME: remove after correct testing.
1068 getSurroundingPosNew(lp, rp);
1069 getSurroundingPosOrig(left_pos, right_pos);
1070 if (lp != left_pos || rp != right_pos) {
1071 Row const & row = textRow();
1072 TextMetrics const & tm = bv_->textMetrics(text());
1074 Row::const_iterator cit = tm.findRowElement(row, pos(), boundary(), dummy);
1075 if (cit != row.end())
1076 LYXERR0("Wrong surroundingpos: old=(" << left_pos << ", " << right_pos
1077 << "), new=(" << lp << ", " << rp
1078 << ") *cit= " << *cit
1079 << "\ncur = " << *this << "\nrow =" << row);
1081 LYXERR0("Wrong surroundingpos: old=(" << left_pos << ", " << right_pos
1082 << "), new=(" << lp << ", " << rp
1084 << "\ncur = " << *this << "\nrow =" << row);
1086 LYXERR(Debug::RTL,"getSurroundingPos(" << pos() << (boundary() ? "b" : "")
1087 << ") => (" << left_pos << ", " << right_pos <<")");
1091 bool Cursor::posVisToNewRow(bool movingLeft)
1093 Paragraph const & par = paragraph();
1094 Buffer const & buf = *buffer();
1095 Row const & row = textRow();
1096 bool par_is_LTR = !par.isRTL(buf.params());
1098 // Inside a table, determining whether to move to the next or
1099 // previous row should be done based on the table's direction.
1100 int s = depth() - 1;
1101 if (s >= 1 && (*this)[s].inset().asInsetTabular()) {
1102 par_is_LTR = !(*this)[s].inset().asInsetTabular()->isRightToLeft(*this);
1103 LYXERR(Debug::RTL, "Inside table! par_is_LTR=" << (par_is_LTR ? 1 : 0));
1106 // if moving left in an LTR paragraph or moving right in an
1107 // RTL one, move to previous row
1108 if (par_is_LTR == movingLeft) {
1109 if (row.pos() == 0) { // we're at first row in paragraph
1110 if (pit() == 0) // no previous paragraph! don't move
1112 // move to last pos in previous par
1116 } else { // move to previous row in this par
1117 pos() = row.pos() - 1; // this is guaranteed to be in previous row
1121 // if moving left in an RTL paragraph or moving right in an
1122 // LTR one, move to next row
1124 if (row.endpos() == lastpos()) { // we're at last row in paragraph
1125 if (pit() == lastpit()) // last paragraph! don't move
1127 // move to first row in next par
1131 } else { // move to next row in this par
1132 pos() = row.endpos();
1137 // make sure we're at left-/right-most pos in new row
1138 posVisToRowExtremity(!movingLeft);
1144 void Cursor::posVisToRowExtremity(bool left)
1146 LYXERR(Debug::RTL, "entering extremity: " << pit() << "," << pos() << ","
1147 << (boundary() ? 1 : 0));
1149 TextMetrics const & tm = bv_->textMetrics(text());
1150 // Looking for extremities is like clicking on the left or the
1151 // right of the row.
1152 int x = tm.origin().x_ + (left ? 0 : textRow().width());
1154 pos() = tm.getPosNearX(textRow(), x, b);
1157 LYXERR(Debug::RTL, "leaving extremity: " << pit() << "," << pos() << ","
1158 << (boundary() ? 1 : 0));
1162 bool Cursor::reverseDirectionNeeded() const
1165 * We determine the directions based on the direction of the
1166 * bottom() --- i.e., outermost --- paragraph, because that is
1167 * the only way to achieve consistency of the arrow's movements
1168 * within a paragraph, and thus avoid situations in which the
1169 * cursor gets stuck.
1171 return bottom().paragraph().isRTL(bv().buffer().params());
1175 CursorSlice Cursor::normalAnchor() const
1179 // LASSERT: There have been several bugs around this code, that seem
1180 // to involve failures to reset the anchor. We can at least not crash
1181 // in release mode by resetting it ourselves.
1182 LASSERT(anchor_.depth() >= depth(),
1183 const_cast<DocIterator &>(anchor_) = *this);
1185 CursorSlice normal = anchor_[depth() - 1];
1186 if (depth() < anchor_.depth() && top() <= normal) {
1187 // anchor is behind cursor -> move anchor behind the inset
1194 DocIterator & Cursor::realAnchor()
1200 CursorSlice Cursor::selBegin() const
1204 return normalAnchor() < top() ? normalAnchor() : top();
1208 CursorSlice Cursor::selEnd() const
1212 return normalAnchor() > top() ? normalAnchor() : top();
1216 DocIterator Cursor::selectionBegin() const
1222 // FIXME: This is a work-around for the problem that
1223 // CursorSlice doesn't keep track of the boundary.
1224 if (normalAnchor() == top())
1225 di = anchor_.boundary() > boundary() ? anchor_ : *this;
1227 di = normalAnchor() < top() ? anchor_ : *this;
1233 DocIterator Cursor::selectionEnd() const
1239 // FIXME: This is a work-around for the problem that
1240 // CursorSlice doesn't keep track of the boundary.
1241 if (normalAnchor() == top())
1242 di = anchor_.boundary() < boundary() ? anchor_ : *this;
1244 di = normalAnchor() > top() ? anchor_ : *this;
1246 if (di.depth() > depth()) {
1254 void Cursor::setSelection()
1257 if (idx() == normalAnchor().idx() &&
1258 pit() == normalAnchor().pit() &&
1259 pos() == normalAnchor().pos())
1260 setSelection(false);
1264 void Cursor::setSelection(DocIterator const & where, int n)
1273 void Cursor::clearSelection()
1275 setSelection(false);
1276 setWordSelection(false);
1282 void Cursor::setTargetX(int x)
1285 textTargetOffset_ = 0;
1289 int Cursor::x_target() const
1295 void Cursor::clearTargetX()
1298 textTargetOffset_ = 0;
1302 void Cursor::updateTextTargetOffset()
1307 textTargetOffset_ = x - x_target_;
1311 void Cursor::info(odocstream & os) const
1313 for (int i = 1, n = depth(); i < n; ++i) {
1314 operator[](i).inset().infoize(os);
1318 Inset const * inset = prevInset();
1319 // prevInset() can return 0 in certain case.
1321 prevInset()->infoize2(os);
1323 // overwite old message
1328 bool Cursor::selHandle(bool sel)
1330 //lyxerr << "Cursor::selHandle" << endl;
1333 if (sel == selection())
1337 cap::saveSelection(*this);
1346 ///////////////////////////////////////////////////////////////////
1349 // The part below is the non-integrated rest of the original math
1350 // cursor. This should be either generalized for texted or moved
1351 // back to mathed (in most cases to InsetMathNest).
1353 ///////////////////////////////////////////////////////////////////
1355 #include "mathed/InsetMathChar.h"
1356 #include "mathed/InsetMathGrid.h"
1357 #include "mathed/InsetMathScript.h"
1358 #include "mathed/InsetMathUnknown.h"
1359 #include "mathed/MathFactory.h"
1360 #include "mathed/MathStream.h"
1361 #include "mathed/MathSupport.h"
1366 bool Cursor::isInside(Inset const * p) const
1368 for (size_t i = 0; i != depth(); ++i)
1369 if (&operator[](i).inset() == p)
1375 void Cursor::leaveInset(Inset const & inset)
1377 for (size_t i = 0; i != depth(); ++i) {
1378 if (&operator[](i).inset() == &inset) {
1386 bool Cursor::openable(MathAtom const & t) const
1397 // we can't move into anything new during selection
1398 if (depth() >= anchor_.depth())
1400 if (t.nucleus() != &anchor_[depth()].inset())
1407 void Cursor::setScreenPos(int x, int /*y*/)
1410 //bruteFind(*this, x, y, 0, bv().workWidth(), 0, bv().workHeight());
1415 void Cursor::plainErase()
1417 cell().erase(pos());
1421 void Cursor::markInsert()
1423 insert(char_type(0));
1427 void Cursor::markErase()
1429 cell().erase(pos());
1433 void Cursor::plainInsert(MathAtom const & t)
1435 cell().insert(pos(), t);
1437 inset().setBuffer(bv_->buffer());
1439 forceBufferUpdate();
1443 void Cursor::insert(docstring const & str)
1445 for_each(str.begin(), str.end(),
1446 bind(static_cast<void(Cursor::*)(char_type)>
1447 (&Cursor::insert), this, _1));
1451 void Cursor::insert(char_type c)
1453 //lyxerr << "Cursor::insert char '" << c << "'" << endl;
1454 LASSERT(!empty(), return);
1456 cap::selClearOrDel(*this);
1457 insert(new InsetMathChar(c));
1459 text()->insertChar(*this, c);
1464 void Cursor::insert(MathAtom const & t)
1466 //lyxerr << "Cursor::insert MathAtom '" << t << "'" << endl;
1468 cap::selClearOrDel(*this);
1473 void Cursor::insert(Inset * inset0)
1475 LASSERT(inset0, return);
1477 insert(MathAtom(inset0->asInsetMath()));
1479 text()->insertInset(*this, inset0);
1480 inset0->setBuffer(bv_->buffer());
1482 if (inset0->isLabeled())
1483 forceBufferUpdate();
1488 int Cursor::niceInsert(docstring const & t, Parse::flags f, bool enter)
1490 MathData ar(buffer());
1492 if (ar.size() == 1 && (enter || selection()))
1500 void Cursor::niceInsert(MathAtom const & t)
1503 docstring const safe = cap::grabAndEraseSelection(*this);
1505 // If possible, enter the new inset and move the contents of the selection
1506 if (t->isActive()) {
1508 // be careful here: don't use 'pushBackward(t)' as this we need to
1509 // push the clone, not the original
1510 pushBackward(*nextInset());
1511 // We may not use niceInsert here (recursion)
1512 MathData ar(buffer());
1515 } else if (t->asMacro() && !safe.empty()) {
1516 MathData ar(buffer());
1518 docstring const name = t->asMacro()->name();
1519 MacroData const * data = buffer()->getMacro(name);
1520 if (data && data->numargs() - data->optionals() > 0) {
1521 plainInsert(MathAtom(new InsetMathBrace(ar)));
1528 void Cursor::insert(MathData const & ar)
1532 cap::eraseSelection(*this);
1533 cell().insert(pos(), ar);
1535 // FIXME audit setBuffer calls
1536 inset().setBuffer(bv_->buffer());
1540 bool Cursor::backspace()
1543 cap::eraseSelection(*this);
1548 // If empty cell, and not part of a big cell
1549 if (lastpos() == 0 && inset().nargs() == 1) {
1551 // Directly delete empty cell: [|[]] => [|]
1557 // [|], can not delete from inside
1568 if (inMacroMode()) {
1569 InsetMathUnknown * p = activeMacro();
1570 if (p->name().size() > 1) {
1571 p->setName(p->name().substr(0, p->name().size() - 1));
1576 if (pos() != 0 && prevAtom()->nargs() > 0) {
1577 // let's require two backspaces for 'big stuff' and
1578 // highlight on the first
1590 bool Cursor::erase()
1596 cap::eraseSelection(*this);
1600 // delete empty cells if possible
1601 if (pos() == lastpos() && inset().idxDelete(idx()))
1604 // special behaviour when in last position of cell
1605 if (pos() == lastpos()) {
1606 bool one_cell = inset().nargs() == 1;
1607 if (one_cell && lastpos() == 0) {
1609 // Directly delete empty cell: [|[]] => [|]
1615 // [|], can not delete from inside
1620 inset().idxGlue(idx());
1624 // 'clever' UI hack: only erase large items if previously slected
1625 if (pos() != lastpos() && nextAtom()->nargs() > 0) {
1640 DocIterator save = *this;
1641 FuncRequest cmd(selection() ? LFUN_UP_SELECT : LFUN_UP, docstring());
1642 this->dispatch(cmd);
1643 if (disp_.dispatched())
1653 DocIterator save = *this;
1654 FuncRequest cmd(selection() ? LFUN_DOWN_SELECT : LFUN_DOWN, docstring());
1655 this->dispatch(cmd);
1656 if (disp_.dispatched())
1663 bool Cursor::macroModeClose()
1667 InsetMathUnknown * p = activeMacro();
1669 MathData selection(buffer());
1670 asArray(p->selection(), selection);
1671 docstring const s = p->name();
1673 cell().erase(pos());
1675 // do nothing if the macro name is empty
1679 // trigger updates of macros, at least, if no full
1680 // updates take place anyway
1681 screenUpdateFlags(Update::Force);
1683 docstring const name = s.substr(1);
1684 InsetMathNest * const in = inset().asInsetMath()->asNestInset();
1685 if (in && in->interpretString(*this, s))
1687 MathAtom atom = buffer()->getMacro(name, *this, false) ?
1688 MathAtom(new MathMacro(buffer(), name)) : createInsetMath(name, buffer());
1690 // try to put argument into macro, if we just inserted a macro
1691 bool macroArg = false;
1692 MathMacro * atomAsMacro = atom.nucleus()->asMacro();
1694 // macros here are still unfolded (in init mode in fact). So
1695 // we have to resolve the macro here manually and check its arity
1696 // to put the selection behind it if arity > 0.
1697 MacroData const * data = buffer()->getMacro(atomAsMacro->name());
1698 if (!selection.empty() && data && data->numargs() - data->optionals() > 0) {
1700 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 1);
1702 // non-greedy case. Do not touch the arguments behind
1703 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 0);
1706 // insert remembered selection into first argument of a non-macro
1707 else if (atom.nucleus()->nargs() > 0)
1708 atom.nucleus()->cell(0).append(selection);
1712 // finally put the macro argument behind, if needed
1714 if (selection.size() > 1 || selection[0]->asScriptInset())
1715 plainInsert(MathAtom(new InsetMathBrace(selection)));
1724 docstring Cursor::macroName()
1726 return inMacroMode() ? activeMacro()->name() : docstring();
1730 void Cursor::handleNest(MathAtom const & a, int c)
1732 //lyxerr << "Cursor::handleNest: " << c << endl;
1734 asArray(cap::grabAndEraseSelection(*this), t.nucleus()->cell(c));
1737 pushBackward(*nextInset());
1741 int Cursor::targetX() const
1743 if (x_target() != -1)
1752 int Cursor::textTargetOffset() const
1754 return textTargetOffset_;
1758 void Cursor::setTargetX()
1767 bool Cursor::inMacroMode() const
1771 if (pos() == 0 || cell().empty())
1773 InsetMathUnknown const * p = prevAtom()->asUnknownInset();
1774 return p && !p->final();
1778 InsetMathUnknown * Cursor::activeMacro()
1780 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1784 InsetMathUnknown const * Cursor::activeMacro() const
1786 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1790 void Cursor::pullArg()
1793 MathData ar = cell();
1794 if (popBackward() && inMathed()) {
1796 cell().insert(pos(), ar);
1799 //formula()->mutateToText();
1804 void Cursor::touch()
1808 DocIterator::const_iterator it = begin();
1809 DocIterator::const_iterator et = end();
1810 for ( ; it != et; ++it)
1816 void Cursor::normalize()
1818 if (idx() > lastidx()) {
1819 lyxerr << "this should not really happen - 1: "
1820 << idx() << ' ' << nargs()
1821 << " in: " << &inset() << endl;
1825 if (pos() > lastpos()) {
1826 lyxerr << "this should not really happen - 2: "
1827 << pos() << ' ' << lastpos() << " in idx: " << idx()
1829 odocstringstream os;
1830 WriteStream wi(os, false, true, WriteStream::wsDefault);
1831 inset().asInsetMath()->write(wi);
1832 lyxerr << to_utf8(os.str()) << endl;
1838 bool Cursor::upDownInMath(bool up)
1840 // Be warned: The 'logic' implemented in this function is highly
1841 // fragile. A distance of one pixel or a '<' vs '<=' _really
1842 // matters. So fiddle around with it only if you think you know
1843 // what you are doing!
1847 xo = beforeDispatchPosX_;
1849 // check if we had something else in mind, if not, this is the future
1851 if (x_target_ == -1)
1853 else if (inset().asInsetText() && xo - textTargetOffset() != x_target()) {
1854 // In text mode inside the line (not left or right) possibly set a new target_x,
1855 // but only if we are somewhere else than the previous target-offset.
1857 // We want to keep the x-target on subsequent up/down movements
1858 // that cross beyond the end of short lines. Thus a special
1859 // handling when the cursor is at the end of line: Use the new
1860 // x-target only if the old one was before the end of line
1861 // or the old one was after the beginning of the line
1862 bool inRTL = innerParagraph().isRTL(bv().buffer().params());
1866 left = pos() == textRow().endpos();
1867 right = pos() == textRow().pos();
1869 left = pos() == textRow().pos();
1870 right = pos() == textRow().endpos();
1872 if ((!left && !right) ||
1873 (left && !right && xo < x_target_) ||
1874 (!left && right && x_target_ < xo))
1881 // try neigbouring script insets
1883 if (inMathed() && !selection()) {
1886 InsetMathScript const * p = prevAtom()->asScriptInset();
1887 if (p && p->has(up)) {
1889 push(*const_cast<InsetMathScript*>(p));
1890 idx() = p->idxOfScript(up);
1893 // we went in the right direction? Otherwise don't jump into the script
1897 int oy = beforeDispatchPosY_;
1898 if ((!up && y <= oy) ||
1907 if (pos() != lastpos()) {
1908 InsetMathScript const * p = nextAtom()->asScriptInset();
1909 if (p && p->has(up)) {
1910 push(*const_cast<InsetMathScript*>(p));
1911 idx() = p->idxOfScript(up);
1914 // we went in the right direction? Otherwise don't jump into the script
1918 int oy = beforeDispatchPosY_;
1919 if ((!up && y <= oy) ||
1928 // try to find an inset that knows better then we,
1929 if (inset().idxUpDown(*this, up)) {
1930 //lyxerr << "idxUpDown triggered" << endl;
1931 // try to find best position within this inset
1933 setCursor(bruteFind2(*this, xo, yo));
1937 // any improvement going just out of inset?
1938 if (popBackward() && inMathed()) {
1939 //lyxerr << "updown: popBackward succeeded" << endl;
1942 int yold = beforeDispatchPosY_;
1944 if (up ? ynew < yold : ynew > yold)
1948 // no success, we are probably at the document top or bottom
1954 bool Cursor::atFirstOrLastRow(bool up)
1956 TextMetrics const & tm = bv_->textMetrics(text());
1957 ParagraphMetrics const & pm = tm.parMetrics(pit());
1960 if (pos() && boundary())
1961 row = pm.pos2row(pos() - 1);
1963 row = pm.pos2row(pos());
1966 if (pit() == 0 && row == 0)
1969 if (pit() + 1 >= int(text()->paragraphs().size()) &&
1970 row + 1 >= int(pm.rows().size()))
1977 bool Cursor::upDownInText(bool up, bool & updateNeeded)
1979 LASSERT(text(), return false);
1985 xo = beforeDispatchPosX_;
1987 // update the targetX - this is here before the "return false"
1988 // to set a new target which can be used by InsetTexts above
1989 // if we cannot move up/down inside this inset anymore
1990 if (x_target_ == -1)
1992 else if (xo - textTargetOffset() != x_target() &&
1993 depth() == beforeDispatchCursor_.depth()) {
1994 // In text mode inside the line (not left or right)
1995 // possibly set a new target_x, but only if we are
1996 // somewhere else than the previous target-offset.
1998 // We want to keep the x-target on subsequent up/down
1999 // movements that cross beyond the end of short lines.
2000 // Thus a special handling when the cursor is at the
2001 // end of line: Use the new x-target only if the old
2002 // one was before the end of line or the old one was
2003 // after the beginning of the line
2004 bool inRTL = innerParagraph().isRTL(bv().buffer().params());
2008 left = pos() == textRow().endpos();
2009 right = pos() == textRow().pos();
2011 left = pos() == textRow().pos();
2012 right = pos() == textRow().endpos();
2014 if ((!left && !right) ||
2015 (left && !right && xo < x_target_) ||
2016 (!left && right && x_target_ < xo))
2023 // first get the current line
2024 TextMetrics & tm = bv_->textMetrics(text());
2025 ParagraphMetrics const & pm = tm.parMetrics(pit());
2027 if (pos() && boundary())
2028 row = pm.pos2row(pos() - 1);
2030 row = pm.pos2row(pos());
2032 if (atFirstOrLastRow(up)) {
2033 // Is there a place for the cursor to go ? If yes, we
2034 // can execute the DEPM, otherwise we should keep the
2035 // paragraph to host the cursor.
2036 Cursor dummy = *this;
2037 bool valid_destination = false;
2038 for(; dummy.depth(); dummy.pop())
2039 if (!dummy.atFirstOrLastRow(up)) {
2040 valid_destination = true;
2044 // will a next dispatch follow and if there is a new
2045 // dispatch will it move the cursor out ?
2046 if (depth() > 1 && valid_destination) {
2047 // The cursor hasn't changed yet. This happens when
2048 // you e.g. move out of an inset. And to give the
2049 // DEPM the possibility of doing something we must
2050 // provide it with two different cursors. (Lgb, vfr)
2052 dummy.pos() = dummy.pos() == 0 ? dummy.lastpos() : 0;
2053 dummy.pit() = dummy.pit() == 0 ? dummy.lastpit() : 0;
2055 updateNeeded |= bv().checkDepm(dummy, *this);
2056 updateTextTargetOffset();
2058 forceBufferUpdate();
2063 // with and without selection are handled differently
2065 int yo = bv().getPos(*this).y_;
2067 // To next/previous row
2069 tm.editXY(*this, xo, yo - textRow().ascent() - 1);
2071 tm.editXY(*this, xo, yo + textRow().descent() + 1);
2074 // This happens when you move out of an inset.
2075 // And to give the DEPM the possibility of doing
2076 // something we must provide it with two different
2078 Cursor dummy = *this;
2081 if (bv().checkDepm(dummy, old)) {
2082 updateNeeded = true;
2083 // Make sure that cur gets back whatever happened to dummy (Lgb)
2087 // if there is a selection, we stay out of any inset,
2088 // and just jump to the right position:
2094 } else if (pit() > 0) {
2096 TextMetrics & tm = bv_->textMetrics(text());
2097 if (!tm.contains(pit()))
2098 tm.newParMetricsUp();
2099 ParagraphMetrics const & pmcur = tm.parMetrics(pit());
2100 next_row = pmcur.rows().size() - 1;
2103 if (row + 1 < int(pm.rows().size())) {
2105 } else if (pit() + 1 < int(text()->paragraphs().size())) {
2107 TextMetrics & tm = bv_->textMetrics(text());
2108 if (!tm.contains(pit()))
2109 tm.newParMetricsDown();
2114 Row const & real_next_row = tm.parMetrics(pit()).rows()[next_row];
2116 top().pos() = tm.getPosNearX(real_next_row, xo, bound);
2119 updateNeeded |= bv().checkDepm(*this, old);
2123 forceBufferUpdate();
2124 updateTextTargetOffset();
2129 void Cursor::handleFont(string const & font)
2131 LYXERR(Debug::DEBUG, font);
2135 safe = cap::grabAndEraseSelection(*this);
2140 if (lastpos() != 0) {
2141 // something left in the cell
2143 // cursor in first position
2145 } else if (pos() == lastpos()) {
2146 // cursor in last position
2149 // cursor in between. split cell
2150 MathData::iterator bt = cell().begin();
2151 MathAtom at = createInsetMath(from_utf8(font), buffer());
2152 at.nucleus()->cell(0) = MathData(buffer(), bt, bt + pos());
2153 cell().erase(bt, bt + pos());
2158 // nothing left in the cell
2167 void Cursor::message(docstring const & msg) const
2169 disp_.setMessage(msg);
2173 void Cursor::errorMessage(docstring const & msg) const
2175 disp_.setMessage(msg);
2176 disp_.setError(true);
2182 docstring parbreak(Cursor const * cur)
2184 odocstringstream os;
2186 // only add blank line if we're not in a ParbreakIsNewline situation
2187 if (!cur->inset().getLayout().parbreakIsNewline()
2188 && !cur->paragraph().layout().parbreak_is_newline)
2196 docstring Cursor::selectionAsString(bool with_label) const
2202 return cap::grabSelection(*this);
2204 int const label = with_label
2205 ? AS_STR_LABEL | AS_STR_INSETS : AS_STR_INSETS;
2207 idx_type const startidx = selBegin().idx();
2208 idx_type const endidx = selEnd().idx();
2209 if (startidx != endidx) {
2210 // multicell selection
2211 InsetTabular * table = inset().asInsetTabular();
2212 LASSERT(table, return docstring());
2213 return table->asString(startidx, endidx);
2216 ParagraphList const & pars = text()->paragraphs();
2218 pit_type const startpit = selBegin().pit();
2219 pit_type const endpit = selEnd().pit();
2220 size_t const startpos = selBegin().pos();
2221 size_t const endpos = selEnd().pos();
2223 if (startpit == endpit)
2224 return pars[startpit].asString(startpos, endpos, label);
2226 // First paragraph in selection
2227 docstring result = pars[startpit].
2228 asString(startpos, pars[startpit].size(), label)
2231 // The paragraphs in between (if any)
2232 for (pit_type pit = startpit + 1; pit != endpit; ++pit) {
2233 Paragraph const & par = pars[pit];
2234 result += par.asString(0, par.size(), label)
2238 // Last paragraph in selection
2239 result += pars[endpit].asString(0, endpos, label);
2245 docstring Cursor::currentState() const
2248 odocstringstream os;
2254 return text()->currentState(*this);
2260 docstring Cursor::getPossibleLabel() const
2262 return inMathed() ? from_ascii("eq:") : text()->getPossibleLabel(*this);
2266 Encoding const * Cursor::getEncoding() const
2270 CursorSlice const & sl = innerTextSlice();
2271 Text const & text = *sl.text();
2272 Font font = text.getPar(sl.pit()).getFont(
2273 bv().buffer().params(), sl.pos(), text.outerFont(sl.pit()));
2274 return font.language()->encoding();
2278 void Cursor::undispatched() const
2280 disp_.dispatched(false);
2284 void Cursor::dispatched() const
2286 disp_.dispatched(true);
2290 void Cursor::screenUpdateFlags(Update::flags f) const
2292 disp_.screenUpdate(f);
2296 void Cursor::forceBufferUpdate() const
2298 disp_.forceBufferUpdate();
2302 void Cursor::clearBufferUpdate() const
2304 disp_.clearBufferUpdate();
2308 bool Cursor::needBufferUpdate() const
2310 return disp_.needBufferUpdate();
2314 void Cursor::noScreenUpdate() const
2316 disp_.screenUpdate(Update::None);
2320 Font Cursor::getFont() const
2322 // The logic here should more or less match to the
2323 // Cursor::setCurrentFont logic, i.e. the cursor height should
2324 // give a hint what will happen if a character is entered.
2326 // HACK. far from being perfect...
2328 CursorSlice const & sl = innerTextSlice();
2329 Text const & text = *sl.text();
2330 Paragraph const & par = text.getPar(sl.pit());
2332 // on boundary, so we are really at the character before
2333 pos_type pos = sl.pos();
2334 if (pos > 0 && boundary())
2337 // on space? Take the font before (only for RTL boundary stay)
2339 TextMetrics const & tm = bv().textMetrics(&text);
2340 if (pos == sl.lastpos()
2341 || (par.isSeparator(pos)
2342 && !tm.isRTLBoundary(sl.pit(), pos)))
2346 // get font at the position
2347 Font font = par.getFont(buffer()->params(), pos,
2348 text.outerFont(sl.pit()));
2354 bool Cursor::fixIfBroken()
2356 bool const broken_cursor = DocIterator::fixIfBroken();
2357 bool const broken_anchor = anchor_.fixIfBroken();
2359 if (broken_cursor || broken_anchor) {
2360 clearNewWordPosition();
2368 void Cursor::sanitize()
2370 setBuffer(&bv_->buffer());
2371 DocIterator::sanitize();
2379 bool notifyCursorLeavesOrEnters(Cursor const & old, Cursor & cur)
2381 // find inset in common
2383 for (i = 0; i < old.depth() && i < cur.depth(); ++i) {
2384 if (&old[i].inset() != &cur[i].inset())
2388 // update words if we just moved to another paragraph
2389 if (i == old.depth() && i == cur.depth()
2390 && !cur.buffer()->isClean()
2391 && cur.inTexted() && old.inTexted()
2392 && cur.pit() != old.pit()) {
2393 old.paragraph().updateWords();
2396 // notify everything on top of the common part in old cursor,
2397 // but stop if the inset claims the cursor to be invalid now
2398 for (size_type j = i; j < old.depth(); ++j) {
2399 Cursor inset_pos = old;
2400 inset_pos.cutOff(j);
2401 if (old[j].inset().notifyCursorLeaves(inset_pos, cur))
2405 // notify everything on top of the common part in new cursor,
2406 // but stop if the inset claims the cursor to be invalid now
2407 for (; i < cur.depth(); ++i) {
2408 if (cur[i].inset().notifyCursorEnters(cur))
2416 void Cursor::setCurrentFont()
2418 CursorSlice const & cs = innerTextSlice();
2419 Paragraph const & par = cs.paragraph();
2420 pos_type cpit = cs.pit();
2421 pos_type cpos = cs.pos();
2422 Text const & ctext = *cs.text();
2423 TextMetrics const & tm = bv().textMetrics(&ctext);
2425 // are we behind previous char in fact? -> go to that char
2426 if (cpos > 0 && boundary())
2429 // find position to take the font from
2431 // paragraph end? -> font of last char
2432 if (cpos == lastpos())
2434 // on space? -> look at the words in front of space
2435 else if (cpos > 0 && par.isSeparator(cpos)) {
2436 // abc| def -> font of c
2437 // abc |[WERBEH], i.e. boundary==true -> font of c
2438 // abc [WERBEH]| def, font of the space
2439 if (!tm.isRTLBoundary(cpit, cpos))
2445 BufferParams const & bufparams = buffer()->params();
2446 current_font = par.getFontSettings(bufparams, cpos);
2447 real_current_font = tm.displayFont(cpit, cpos);
2449 // special case for paragraph end
2450 if (cs.pos() == lastpos()
2451 && tm.isRTLBoundary(cpit, cs.pos())
2453 Language const * lang = par.getParLanguage(bufparams);
2454 current_font.setLanguage(lang);
2455 current_font.fontInfo().setNumber(FONT_OFF);
2456 real_current_font.setLanguage(lang);
2457 real_current_font.fontInfo().setNumber(FONT_OFF);
2462 bool Cursor::textUndo()
2464 if (!buffer()->undo().textUndo(*this))
2471 bool Cursor::textRedo()
2473 if (!buffer()->undo().textRedo(*this))
2480 void Cursor::finishUndo() const
2482 buffer()->undo().finishUndo();
2486 void Cursor::beginUndoGroup() const
2488 buffer()->undo().beginUndoGroup(*this);
2492 void Cursor::endUndoGroup() const
2494 buffer()->undo().endUndoGroup(*this);
2498 void Cursor::recordUndo(pit_type from, pit_type to) const
2500 buffer()->undo().recordUndo(*this, from, to);
2504 void Cursor::recordUndo(pit_type from) const
2506 buffer()->undo().recordUndo(*this, from, pit());
2510 void Cursor::recordUndo(UndoKind kind) const
2512 buffer()->undo().recordUndo(*this, kind);
2516 void Cursor::recordUndoInset(Inset const * in) const
2518 buffer()->undo().recordUndoInset(*this, in);
2522 void Cursor::recordUndoFullBuffer() const
2524 buffer()->undo().recordUndoFullBuffer(*this);
2528 void Cursor::recordUndoBufferParams() const
2530 buffer()->undo().recordUndoBufferParams(*this);
2534 void Cursor::recordUndoSelection() const
2537 if (cap::multipleCellsSelected(*this))
2542 buffer()->undo().recordUndo(*this,
2543 selBegin().pit(), selEnd().pit());
2548 void Cursor::checkBufferStructure()
2550 Buffer const * master = buffer()->masterBuffer();
2551 master->tocBackend().updateItem(*this);
2552 if (master != buffer() && !master->hasGuiDelegate())
2553 // In case the master has no gui associated with it,
2554 // the TocItem is not updated (part of bug 5699).
2555 buffer()->tocBackend().updateItem(*this);