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/lassert.h"
40 #include "support/debug.h"
41 #include "support/docstream.h"
43 #include "insets/InsetTabular.h"
44 #include "insets/InsetText.h"
46 #include "mathed/InsetMath.h"
47 #include "mathed/InsetMathBrace.h"
48 #include "mathed/InsetMathScript.h"
49 #include "mathed/MacroTable.h"
50 #include "mathed/MathData.h"
51 #include "mathed/MathMacro.h"
53 #include "support/bind.h"
66 bool positionable(DocIterator const & cursor, DocIterator const & anchor)
68 // avoid deeper nested insets when selecting
69 if (cursor.depth() > anchor.depth())
72 // anchor might be deeper, should have same path then
73 for (size_t i = 0; i < cursor.depth(); ++i)
74 if (&cursor[i].inset() != &anchor[i].inset())
77 // position should be ok.
82 // Find position closest to (x, y) in cell given by iter.
83 // Used only in mathed
84 DocIterator bruteFind2(Cursor const & c, int x, int y)
86 double best_dist = numeric_limits<double>::max();
93 et.top().pos() = et.top().asInsetMath()->cell(et.top().idx()).size();
94 for (size_t i = 0;; ++i) {
97 Inset const * inset = &it.inset();
98 map<Inset const *, Geometry> const & data =
99 c.bv().coordCache().getInsets().getData();
100 map<Inset const *, Geometry>::const_iterator I = data.find(inset);
102 // FIXME: in the case where the inset is not in the cache, this
103 // means that no part of it is visible on screen. In this case
104 // we don't do elaborate search and we just return the forwarded
105 // DocIterator at its beginning.
106 if (I == data.end()) {
111 Point o = I->second.pos;
112 inset->cursorPos(c.bv(), it.top(), c.boundary(), xo, yo);
113 // Convert to absolute
116 double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
117 // '<=' in order to take the last possible position
118 // this is important for clicking behind \sum in e.g. '\sum_i a'
119 LYXERR(Debug::DEBUG, "i: " << i << " d: " << d
120 << " best: " << best_dist);
121 if (d <= best_dist) {
134 /// moves position closest to (x, y) in given box
135 bool bruteFind(Cursor & cursor,
136 int x, int y, int xlow, int xhigh, int ylow, int yhigh)
138 LASSERT(!cursor.empty(), return false);
139 Inset & inset = cursor[0].inset();
140 BufferView & bv = cursor.bv();
142 CoordCache::InnerParPosCache const & cache =
143 bv.coordCache().getParPos().find(cursor.bottom().text())->second;
144 // Get an iterator on the first paragraph in the cache
145 DocIterator it(inset);
146 it.push_back(CursorSlice(inset));
147 it.pit() = cache.begin()->first;
148 // Get an iterator after the last paragraph in the cache
149 DocIterator et(inset);
150 et.push_back(CursorSlice(inset));
151 et.pit() = boost::prior(cache.end())->first;
152 if (et.pit() >= et.lastpit())
153 et = doc_iterator_end(inset);
157 double best_dist = numeric_limits<double>::max();
158 DocIterator best_cursor = et;
160 for ( ; it != et; it.forwardPos(true)) {
161 // avoid invalid nesting when selecting
162 if (!cursor.selection() || positionable(it, cursor.anchor_)) {
163 Point p = bv.getPos(it, false);
166 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
167 double const dx = xo - x;
168 double const dy = yo - y;
169 double const d = dx * dx + dy * dy;
170 // '<=' in order to take the last possible position
171 // this is important for clicking behind \sum in e.g. '\sum_i a'
172 if (d <= best_dist) {
173 // lyxerr << "*" << endl;
181 if (best_cursor != et) {
182 cursor.setCursor(best_cursor);
191 /// moves position closest to (x, y) in given box
192 bool bruteFind3(Cursor & cur, int x, int y, bool up)
194 BufferView & bv = cur.bv();
195 int ylow = up ? 0 : y + 1;
196 int yhigh = up ? y - 1 : bv.workHeight();
198 int xhigh = bv.workWidth();
200 // FIXME: bit more work needed to get 'from' and 'to' right.
201 pit_type from = cur.bottom().pit();
202 //pit_type to = cur.bottom().pit();
203 //lyxerr << "Pit start: " << from << endl;
205 //lyxerr << "bruteFind3: x: " << x << " y: " << y
206 // << " xlow: " << xlow << " xhigh: " << xhigh
207 // << " ylow: " << ylow << " yhigh: " << yhigh
209 DocIterator it = doc_iterator_begin(cur.buffer());
211 DocIterator et = doc_iterator_end(cur.buffer());
213 double best_dist = numeric_limits<double>::max();
214 DocIterator best_cursor = et;
216 for ( ; it != et; it.forwardPos()) {
217 // avoid invalid nesting when selecting
218 if (bv.cursorStatus(it) == CUR_INSIDE
219 && (!cur.selection() || positionable(it, cur.realAnchor()))) {
220 // If this function is ever used again, check whether this
221 // is the same as "bv.getPos(it, false)" with boundary = false.
222 Point p = bv.getPos(it);
225 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
226 double const dx = xo - x;
227 double const dy = yo - y;
228 double const d = dx * dx + dy * dy;
229 //lyxerr << "itx: " << xo << " ity: " << yo << " d: " << d
230 // << " dx: " << dx << " dy: " << dy
231 // << " idx: " << it.idx() << " pos: " << it.pos()
234 // '<=' in order to take the last possible position
235 // this is important for clicking behind \sum in e.g. '\sum_i a'
236 if (d <= best_dist) {
237 //lyxerr << "*" << endl;
245 //lyxerr << "best_dist: " << best_dist << " cur:\n" << best_cursor << endl;
246 if (best_cursor == et)
248 cur.setCursor(best_cursor);
255 // be careful: this is called from the bv's constructor, too, so
256 // bv functions are not yet available!
257 Cursor::Cursor(BufferView & bv)
258 : DocIterator(&bv.buffer()), bv_(&bv), anchor_(),
259 x_target_(-1), textTargetOffset_(0),
260 selection_(false), mark_(false), word_selection_(false),
261 logicalpos_(false), current_font(inherit_font)
268 push_back(CursorSlice(buffer()->inset()));
269 anchor_ = doc_iterator_begin(buffer());
277 // this (intentionally) does neither touch anchor nor selection status
278 void Cursor::setCursor(DocIterator const & cur)
280 DocIterator::operator=(cur);
284 bool Cursor::getStatus(FuncRequest const & cmd, FuncStatus & status) const
288 // Try to fix cursor in case it is broken.
291 // Is this a function that acts on inset at point?
292 Inset * inset = cur.nextInset();
293 if (lyxaction.funcHasFlag(cmd.action(), LyXAction::AtPoint)
294 && inset && inset->getStatus(cur, cmd, status))
297 // This is, of course, a mess. Better create a new doc iterator and use
298 // this in Inset::getStatus. This might require an additional
299 // BufferView * arg, though (which should be avoided)
300 //Cursor safe = *this;
302 for ( ; cur.depth(); cur.pop()) {
303 //lyxerr << "\nCursor::getStatus: cmd: " << cmd << endl << *this << endl;
304 LASSERT(cur.idx() <= cur.lastidx(), /**/);
305 LASSERT(cur.pit() <= cur.lastpit(), /**/);
306 LASSERT(cur.pos() <= cur.lastpos(), /**/);
308 // The inset's getStatus() will return 'true' if it made
309 // a definitive decision on whether it want to handle the
310 // request or not. The result of this decision is put into
311 // the 'status' parameter.
312 if (cur.inset().getStatus(cur, cmd, status)) {
321 void Cursor::saveBeforeDispatchPosXY()
323 getPos(beforeDispatchPosX_, beforeDispatchPosY_);
327 void Cursor::dispatch(FuncRequest const & cmd0)
329 LYXERR(Debug::DEBUG, "cmd: " << cmd0 << '\n' << *this);
334 FuncRequest cmd = cmd0;
337 disp_ = DispatchResult();
339 buffer()->undo().beginUndoGroup();
341 // Is this a function that acts on inset at point?
342 if (lyxaction.funcHasFlag(cmd.action(), LyXAction::AtPoint)
344 disp_.dispatched(true);
345 disp_.screenUpdate(Update::FitCursor | Update::Force);
346 FuncRequest tmpcmd = cmd;
347 LYXERR(Debug::DEBUG, "Cursor::dispatch: (AtPoint) cmd: "
348 << cmd0 << endl << *this);
349 nextInset()->dispatch(*this, tmpcmd);
350 if (disp_.dispatched()) {
351 buffer()->undo().endUndoGroup();
356 // store some values to be used inside of the handlers
357 beforeDispatchCursor_ = *this;
358 for (; depth(); pop(), boundary(false)) {
359 LYXERR(Debug::DEBUG, "Cursor::dispatch: cmd: "
360 << cmd0 << endl << *this);
361 LASSERT(pos() <= lastpos(), /**/);
362 LASSERT(idx() <= lastidx(), /**/);
363 LASSERT(pit() <= lastpit(), /**/);
365 // The common case is 'LFUN handled, need update', so make the
366 // LFUN handler's life easier by assuming this as default value.
367 // The handler can reset the update and val flags if necessary.
368 disp_.screenUpdate(Update::FitCursor | Update::Force);
369 disp_.dispatched(true);
370 inset().dispatch(*this, cmd);
371 if (disp_.dispatched())
375 // it completely to get a 'bomb early' behaviour in case this
376 // object will be used again.
377 if (!disp_.dispatched()) {
378 LYXERR(Debug::DEBUG, "RESTORING OLD CURSOR!");
379 // We might have invalidated the cursor when removing an empty
380 // paragraph while the cursor could not be moved out the inset
381 // while we initially thought we could. This might happen when
382 // a multiline inset becomes an inline inset when the second
383 // paragraph is removed.
384 if (safe.pit() > safe.lastpit()) {
385 safe.pit() = safe.lastpit();
386 safe.pos() = safe.lastpos();
389 disp_.screenUpdate(Update::None);
390 disp_.dispatched(false);
392 // restore the previous one because nested Cursor::dispatch calls
393 // are possible which would change it
394 beforeDispatchCursor_ = safe.beforeDispatchCursor_;
396 buffer()->undo().endUndoGroup();
398 // notify insets we just left
400 old.beginUndoGroup();
402 bool badcursor = notifyCursorLeavesOrEnters(old, *this);
405 bv().resetInlineCompletionPos();
412 DispatchResult const & Cursor::result() const
418 BufferView & Cursor::bv() const
427 LASSERT(depth() >= 1, /**/);
432 void Cursor::push(Inset & p)
434 push_back(CursorSlice(p));
435 p.setBuffer(*buffer());
439 void Cursor::pushBackward(Inset & p)
441 LASSERT(!empty(), return);
442 //lyxerr << "Entering inset " << t << " front" << endl;
448 bool Cursor::popBackward()
450 LASSERT(!empty(), return false);
458 bool Cursor::popForward()
460 LASSERT(!empty(), return false);
461 //lyxerr << "Leaving inset from in back" << endl;
462 const pos_type lp = (depth() > 1) ? (*this)[depth() - 2].lastpos() : 0;
466 pos() += lastpos() - lp + 1;
471 int Cursor::currentMode()
473 LASSERT(!empty(), /**/);
474 for (int i = depth() - 1; i >= 0; --i) {
475 int res = operator[](i).inset().currentMode();
476 bool locked_mode = operator[](i).inset().lockedMode();
477 // Also return UNDECIDED_MODE when the mode is locked,
478 // as in this case it is treated the same as TEXT_MODE
479 if (res != Inset::UNDECIDED_MODE || locked_mode)
482 return Inset::TEXT_MODE;
486 void Cursor::getPos(int & x, int & y) const
488 Point p = bv().getPos(*this);
494 Row const & Cursor::textRow() const
496 CursorSlice const & cs = innerTextSlice();
497 ParagraphMetrics const & pm = bv().parMetrics(cs.text(), cs.pit());
498 LASSERT(!pm.rows().empty(), /**/);
499 return pm.getRow(pos(), boundary());
503 void Cursor::resetAnchor()
506 checkNewWordPosition();
510 void Cursor::setCursorToAnchor()
513 DocIterator normal = anchor_;
514 while (depth() < normal.depth())
516 if (depth() < anchor_.depth() && top() <= anchor_[depth() - 1])
523 void Cursor::markEditPosition()
525 if (lyxrc.spellcheck_continuously && inTexted() && new_word_.empty()) {
526 FontSpan ow = locateWord(WHOLE_WORD);
527 if (ow.size() == 1) {
528 LYXERR(Debug::DEBUG, "start new word: "
530 << " pos: " << ow.first);
537 void Cursor::clearNewWordPosition()
539 if (!new_word_.empty()) {
540 LYXERR(Debug::DEBUG, "clear new word: "
542 << " pos: " << pos());
548 void Cursor::checkNewWordPosition()
550 if (!lyxrc.spellcheck_continuously || new_word_.empty())
553 clearNewWordPosition();
555 // forget the position of the current started word
556 // 1) the paragraph changes or
557 // 2) the count of nested insets changes
558 if (pit() != new_word_.pit() || depth() != new_word_.depth())
559 clearNewWordPosition();
561 FontSpan nw = locateWord(WHOLE_WORD);
563 FontSpan ow = new_word_.locateWord(WHOLE_WORD);
564 if (nw.intersect(ow).empty())
565 clearNewWordPosition();
567 LYXERR(Debug::DEBUG, "new word: "
569 << " pos: " << nw.first << ".." << nw.last);
571 clearNewWordPosition();
578 bool Cursor::posBackward()
587 bool Cursor::posForward()
589 if (pos() == lastpos())
596 bool Cursor::posVisRight(bool skip_inset)
598 Cursor new_cur = *this; // where we will move to
599 pos_type left_pos; // position visually left of current cursor
600 pos_type right_pos; // position visually right of current cursor
601 bool new_pos_is_RTL; // is new position we're moving to RTL?
603 getSurroundingPos(left_pos, right_pos);
605 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
607 // Are we at an inset?
608 new_cur.pos() = right_pos;
609 new_cur.boundary(false);
611 text()->checkAndActivateInsetVisual(new_cur, right_pos >= pos(), false)) {
612 // we actually move the cursor at the end of this function, for now
613 // we just keep track of the new position in new_cur...
614 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
617 // Are we already at rightmost pos in row?
618 else if (text()->empty() || right_pos == -1) {
621 if (!new_cur.posVisToNewRow(false)) {
622 LYXERR(Debug::RTL, "not moving!");
626 // we actually move the cursor at the end of this function, for now
627 // just keep track of the new position in new_cur...
628 LYXERR(Debug::RTL, "right edge, moving: " << int(new_cur.pit()) << ","
629 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
632 // normal movement to the right
635 // Recall, if the cursor is at position 'x', that means *before*
636 // the character at position 'x'. In RTL, "before" means "to the
637 // right of", in LTR, "to the left of". So currently our situation
638 // is this: the position to our right is 'right_pos' (i.e., we're
639 // currently to the left of 'right_pos'). In order to move to the
640 // right, it depends whether or not the character at 'right_pos' is RTL.
641 new_pos_is_RTL = paragraph().getFontSettings(
642 buffer()->params(), right_pos).isVisibleRightToLeft();
643 // If the character at 'right_pos' *is* LTR, then in order to move to
644 // the right of it, we need to be *after* 'right_pos', i.e., move to
645 // position 'right_pos' + 1.
646 if (!new_pos_is_RTL) {
647 new_cur.pos() = right_pos + 1;
648 // set the boundary to true in two situations:
650 // 1. if new_pos is now lastpos, and we're in an RTL paragraph
651 // (this means that we're moving right to the end of an LTR chunk
652 // which is at the end of an RTL paragraph);
653 (new_cur.pos() == lastpos()
654 && paragraph().isRTL(buffer()->params()))
655 // 2. if the position *after* right_pos is RTL (we want to be
656 // *after* right_pos, not before right_pos + 1!)
657 || paragraph().getFontSettings(buffer()->params(),
658 new_cur.pos()).isVisibleRightToLeft()
660 new_cur.boundary(true);
661 else // set the boundary to false
662 new_cur.boundary(false);
664 // Otherwise (if the character at position 'right_pos' is RTL), then
665 // moving to the right of it is as easy as setting the new position
668 new_cur.pos() = right_pos;
669 new_cur.boundary(false);
674 bool moved = (new_cur.pos() != pos()
675 || new_cur.pit() != pit()
676 || new_cur.boundary() != boundary()
677 || &new_cur.inset() != &inset());
680 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
681 << (new_cur.boundary() ? " (boundary)" : ""));
689 bool Cursor::posVisLeft(bool skip_inset)
691 Cursor new_cur = *this; // where we will move to
692 pos_type left_pos; // position visually left of current cursor
693 pos_type right_pos; // position visually right of current cursor
694 bool new_pos_is_RTL; // is new position we're moving to RTL?
696 getSurroundingPos(left_pos, right_pos);
698 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
700 // Are we at an inset?
701 new_cur.pos() = left_pos;
702 new_cur.boundary(false);
704 text()->checkAndActivateInsetVisual(new_cur, left_pos >= pos(), true)) {
705 // we actually move the cursor at the end of this function, for now
706 // we just keep track of the new position in new_cur...
707 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
710 // Are we already at leftmost pos in row?
711 else if (text()->empty() || left_pos == -1) {
714 if (!new_cur.posVisToNewRow(true)) {
715 LYXERR(Debug::RTL, "not moving!");
719 // we actually move the cursor at the end of this function, for now
720 // just keep track of the new position in new_cur...
721 LYXERR(Debug::RTL, "left edge, moving: " << int(new_cur.pit()) << ","
722 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
725 // normal movement to the left
728 // Recall, if the cursor is at position 'x', that means *before*
729 // the character at position 'x'. In RTL, "before" means "to the
730 // right of", in LTR, "to the left of". So currently our situation
731 // is this: the position to our left is 'left_pos' (i.e., we're
732 // currently to the right of 'left_pos'). In order to move to the
733 // left, it depends whether or not the character at 'left_pos' is RTL.
734 new_pos_is_RTL = paragraph().getFontSettings(
735 buffer()->params(), left_pos).isVisibleRightToLeft();
736 // If the character at 'left_pos' *is* RTL, then in order to move to
737 // the left of it, we need to be *after* 'left_pos', i.e., move to
738 // position 'left_pos' + 1.
739 if (new_pos_is_RTL) {
740 new_cur.pos() = left_pos + 1;
741 // set the boundary to true in two situations:
743 // 1. if new_pos is now lastpos and we're in an LTR paragraph
744 // (this means that we're moving left to the end of an RTL chunk
745 // which is at the end of an LTR paragraph);
746 (new_cur.pos() == lastpos()
747 && !paragraph().isRTL(buffer()->params()))
748 // 2. if the position *after* left_pos is not RTL (we want to be
749 // *after* left_pos, not before left_pos + 1!)
750 || !paragraph().getFontSettings(buffer()->params(),
751 new_cur.pos()).isVisibleRightToLeft()
753 new_cur.boundary(true);
754 else // set the boundary to false
755 new_cur.boundary(false);
757 // Otherwise (if the character at position 'left_pos' is LTR), then
758 // moving to the left of it is as easy as setting the new position
761 new_cur.pos() = left_pos;
762 new_cur.boundary(false);
767 bool moved = (new_cur.pos() != pos()
768 || new_cur.pit() != pit()
769 || new_cur.boundary() != boundary());
772 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
773 << (new_cur.boundary() ? " (boundary)" : ""));
781 void Cursor::getSurroundingPos(pos_type & left_pos, pos_type & right_pos)
783 // preparing bidi tables
784 Paragraph const & par = paragraph();
785 Buffer const & buf = *buffer();
786 Row const & row = textRow();
788 bidi.computeTables(par, buf, row);
790 LYXERR(Debug::RTL, "bidi: " << row.pos() << "--" << row.endpos());
792 // The cursor is painted *before* the character at pos(), or, if 'boundary'
793 // is true, *after* the character at (pos() - 1). So we already have one
794 // known position around the cursor:
795 pos_type const known_pos = boundary() && pos() > 0 ? pos() - 1 : pos();
797 // edge case: if we're at the end of the paragraph, things are a little
798 // different (because lastpos is a position which does not really "exist"
799 // --- there's no character there yet).
800 if (known_pos == lastpos()) {
801 if (par.isRTL(buf.params())) {
803 right_pos = bidi.vis2log(row.pos());
807 left_pos = bidi.vis2log(row.endpos() - 1);
812 // Whether 'known_pos' is to the left or to the right of the cursor depends
813 // on whether it is an RTL or LTR character...
814 bool const cur_is_RTL =
815 par.getFontSettings(buf.params(), known_pos).isVisibleRightToLeft();
816 // ... in the following manner:
817 // For an RTL character, "before" means "to the right" and "after" means
818 // "to the left"; and for LTR, it's the reverse. So, 'known_pos' is to the
819 // right of the cursor if (RTL && boundary) or (!RTL && !boundary):
820 bool const known_pos_on_right = cur_is_RTL == boundary();
822 // So we now know one of the positions surrounding the cursor. Let's
823 // determine the other one:
824 if (known_pos_on_right) {
825 right_pos = known_pos;
826 // *visual* position of 'left_pos':
827 pos_type v_left_pos = bidi.log2vis(right_pos) - 1;
828 // If the position we just identified as 'left_pos' is a "skipped
829 // separator" (a separator which is at the logical end of a row,
830 // except for the last row in a paragraph; such separators are not
831 // painted, so they "are not really there"; note that in bidi text,
832 // such a separator could appear visually in the middle of a row),
833 // set 'left_pos' to the *next* position to the left.
834 if (bidi.inRange(v_left_pos)
835 && bidi.vis2log(v_left_pos) + 1 == row.endpos()
836 && row.endpos() < lastpos()
837 && par.isSeparator(bidi.vis2log(v_left_pos)))
840 // calculate the logical position of 'left_pos', if in row
841 if (!bidi.inRange(v_left_pos))
844 left_pos = bidi.vis2log(v_left_pos);
845 // If the position we identified as 'right_pos' is a "skipped
846 // separator", set 'right_pos' to the *next* position to the right.
847 if (right_pos + 1 == row.endpos() && row.endpos() < lastpos()
848 && par.isSeparator(right_pos)) {
849 pos_type const v_right_pos = bidi.log2vis(right_pos) + 1;
850 if (!bidi.inRange(v_right_pos))
853 right_pos = bidi.vis2log(v_right_pos);
856 // known_pos is on the left
857 left_pos = known_pos;
858 // *visual* position of 'right_pos'
859 pos_type v_right_pos = bidi.log2vis(left_pos) + 1;
860 // If the position we just identified as 'right_pos' is a "skipped
861 // separator", set 'right_pos' to the *next* position to the right.
862 if (bidi.inRange(v_right_pos)
863 && bidi.vis2log(v_right_pos) + 1 == row.endpos()
864 && row.endpos() < lastpos()
865 && par.isSeparator(bidi.vis2log(v_right_pos)))
868 // calculate the logical position of 'right_pos', if in row
869 if (!bidi.inRange(v_right_pos))
872 right_pos = bidi.vis2log(v_right_pos);
873 // If the position we identified as 'left_pos' is a "skipped
874 // separator", set 'left_pos' to the *next* position to the left.
875 if (left_pos + 1 == row.endpos() && row.endpos() < lastpos()
876 && par.isSeparator(left_pos)) {
877 pos_type const v_left_pos = bidi.log2vis(left_pos) - 1;
878 if (!bidi.inRange(v_left_pos))
881 left_pos = bidi.vis2log(v_left_pos);
888 bool Cursor::posVisToNewRow(bool movingLeft)
890 Paragraph const & par = paragraph();
891 Buffer const & buf = *buffer();
892 Row const & row = textRow();
893 bool par_is_LTR = !par.isRTL(buf.params());
895 // Inside a table, determining whether to move to the next or previous row
896 // should be done based on the table's direction.
898 if (s >= 1 && (*this)[s].inset().asInsetTabular()) {
899 par_is_LTR = !(*this)[s].inset().asInsetTabular()->isRightToLeft(*this);
900 LYXERR(Debug::RTL, "Inside table! par_is_LTR=" << (par_is_LTR ? 1 : 0));
903 // if moving left in an LTR paragraph or moving right in an RTL one,
904 // move to previous row
905 if (par_is_LTR == movingLeft) {
906 if (row.pos() == 0) { // we're at first row in paragraph
907 if (pit() == 0) // no previous paragraph! don't move
909 // move to last pos in previous par
913 } else { // move to previous row in this par
914 pos() = row.pos() - 1; // this is guaranteed to be in previous row
918 // if moving left in an RTL paragraph or moving right in an LTR one,
921 if (row.endpos() == lastpos()) { // we're at last row in paragraph
922 if (pit() == lastpit()) // last paragraph! don't move
924 // move to first row in next par
928 } else { // move to next row in this par
929 pos() = row.endpos();
934 // make sure we're at left-/right-most pos in new row
935 posVisToRowExtremity(!movingLeft);
941 void Cursor::posVisToRowExtremity(bool left)
943 // prepare bidi tables
944 Paragraph const & par = paragraph();
945 Buffer const & buf = *buffer();
946 Row const & row = textRow();
948 bidi.computeTables(par, buf, row);
950 LYXERR(Debug::RTL, "entering extremity: " << pit() << "," << pos() << ","
951 << (boundary() ? 1 : 0));
953 if (left) { // move to leftmost position
954 // if this is an RTL paragraph, and we're at the last row in the
955 // paragraph, move to lastpos
956 if (par.isRTL(buf.params()) && row.endpos() == lastpos())
959 pos() = bidi.vis2log(row.pos());
961 // Moving to the leftmost position in the row, the cursor should
962 // normally be placed to the *left* of the leftmost position.
963 // A very common exception, though, is if the leftmost character
964 // also happens to be the separator at the (logical) end of the row
965 // --- in this case, the separator is positioned beyond the left
966 // margin, and we don't want to move the cursor there (moving to
967 // the left of the separator is equivalent to moving to the next
968 // line). So, in this case we actually want to place the cursor
969 // to the *right* of the leftmost position (the separator).
970 // Another exception is if we're moving to the logically last
971 // position in the row, which is *not* a separator: this means
972 // that the entire row has no separators (if there were any, the
973 // row would have been broken there); and therefore in this case
974 // we also move to the *right* of the last position (this indicates
975 // to the user that there is no space after this position, and is
976 // consistent with the behavior in the middle of a row --- moving
977 // right or left moves to the next/previous character; if we were
978 // to move to the *left* of this position, that would simulate
979 // a separator which is not really there!).
980 // Finally, there is an exception to the previous exception: if
981 // this non-separator-but-last-position-in-row is an inset, then
982 // we *do* want to stay to the left of it anyway: this is the
983 // "boundary" which we simulate at insets.
984 // Another exception is when row.endpos() is 0.
986 // do we want to be to the right of pos?
987 // as explained above, if at last pos in row, stay to the right
988 bool const right_of_pos = row.endpos() > 0
989 && pos() == row.endpos() - 1 && !par.isInset(pos());
991 // Now we know if we want to be to the left or to the right of pos,
992 // let's make sure we are where we want to be.
993 bool const new_pos_is_RTL =
994 par.getFontSettings(buf.params(), pos()).isVisibleRightToLeft();
996 if (new_pos_is_RTL != right_of_pos) {
1002 // move to rightmost position
1003 // if this is an LTR paragraph, and we're at the last row in the
1004 // paragraph, move to lastpos
1005 if (!par.isRTL(buf.params()) && row.endpos() == lastpos())
1008 pos() = row.endpos() > 0 ? bidi.vis2log(row.endpos() - 1) : 0;
1010 // Moving to the rightmost position in the row, the cursor should
1011 // normally be placed to the *right* of the rightmost position.
1012 // A very common exception, though, is if the rightmost character
1013 // also happens to be the separator at the (logical) end of the row
1014 // --- in this case, the separator is positioned beyond the right
1015 // margin, and we don't want to move the cursor there (moving to
1016 // the right of the separator is equivalent to moving to the next
1017 // line). So, in this case we actually want to place the cursor
1018 // to the *left* of the rightmost position (the separator).
1019 // Another exception is if we're moving to the logically last
1020 // position in the row, which is *not* a separator: this means
1021 // that the entire row has no separators (if there were any, the
1022 // row would have been broken there); and therefore in this case
1023 // we also move to the *left* of the last position (this indicates
1024 // to the user that there is no space after this position, and is
1025 // consistent with the behavior in the middle of a row --- moving
1026 // right or left moves to the next/previous character; if we were
1027 // to move to the *right* of this position, that would simulate
1028 // a separator which is not really there!).
1029 // Finally, there is an exception to the previous exception: if
1030 // this non-separator-but-last-position-in-row is an inset, then
1031 // we *do* want to stay to the right of it anyway: this is the
1032 // "boundary" which we simulate at insets.
1033 // Another exception is when row.endpos() is 0.
1035 // do we want to be to the left of pos?
1036 // as explained above, if at last pos in row, stay to the left,
1037 // unless the last position is the same as the first.
1038 bool const left_of_pos = row.endpos() > 0
1039 && pos() == row.endpos() - 1 && !par.isInset(pos());
1041 // Now we know if we want to be to the left or to the right of pos,
1042 // let's make sure we are where we want to be.
1043 bool const new_pos_is_RTL =
1044 par.getFontSettings(buf.params(), pos()).isVisibleRightToLeft();
1046 if (new_pos_is_RTL == left_of_pos) {
1052 LYXERR(Debug::RTL, "leaving extremity: " << pit() << "," << pos() << ","
1053 << (boundary() ? 1 : 0));
1057 CursorSlice Cursor::normalAnchor() const
1061 LASSERT(anchor_.depth() >= depth(), /**/);
1062 CursorSlice normal = anchor_[depth() - 1];
1063 if (depth() < anchor_.depth() && top() <= normal) {
1064 // anchor is behind cursor -> move anchor behind the inset
1071 DocIterator & Cursor::realAnchor()
1077 CursorSlice Cursor::selBegin() const
1081 return normalAnchor() < top() ? normalAnchor() : top();
1085 CursorSlice Cursor::selEnd() const
1089 return normalAnchor() > top() ? normalAnchor() : top();
1093 DocIterator Cursor::selectionBegin() const
1099 // FIXME: This is a work-around for the problem that
1100 // CursorSlice doesn't keep track of the boundary.
1101 if (normalAnchor() == top())
1102 di = anchor_.boundary() > boundary() ? anchor_ : *this;
1104 di = normalAnchor() < top() ? anchor_ : *this;
1110 DocIterator Cursor::selectionEnd() const
1116 // FIXME: This is a work-around for the problem that
1117 // CursorSlice doesn't keep track of the boundary.
1118 if (normalAnchor() == top())
1119 di = anchor_.boundary() < boundary() ? anchor_ : *this;
1121 di = normalAnchor() > top() ? anchor_ : *this;
1123 if (di.depth() > depth()) {
1131 void Cursor::setSelection()
1134 // A selection with no contents is not a selection
1135 // FIXME: doesnt look ok
1136 if (idx() == normalAnchor().idx() &&
1137 pit() == normalAnchor().pit() &&
1138 pos() == normalAnchor().pos())
1139 setSelection(false);
1143 void Cursor::setSelection(DocIterator const & where, int n)
1152 void Cursor::clearSelection()
1154 setSelection(false);
1155 setWordSelection(false);
1161 void Cursor::setTargetX(int x)
1164 textTargetOffset_ = 0;
1168 int Cursor::x_target() const
1174 void Cursor::clearTargetX()
1177 textTargetOffset_ = 0;
1181 void Cursor::updateTextTargetOffset()
1186 textTargetOffset_ = x - x_target_;
1190 void Cursor::info(odocstream & os) const
1192 for (int i = 1, n = depth(); i < n; ++i) {
1193 operator[](i).inset().infoize(os);
1197 Inset const * inset = prevInset();
1198 // prevInset() can return 0 in certain case.
1200 prevInset()->infoize2(os);
1202 // overwite old message
1207 bool Cursor::selHandle(bool sel)
1209 //lyxerr << "Cursor::selHandle" << endl;
1212 if (sel == selection())
1216 cap::saveSelection(*this);
1224 ostream & operator<<(ostream & os, Cursor const & cur)
1226 os << "\n cursor: | anchor:\n";
1227 for (size_t i = 0, n = cur.depth(); i != n; ++i) {
1228 os << " " << cur[i] << " | ";
1229 if (i < cur.anchor_.depth())
1230 os << cur.anchor_[i];
1232 os << "-------------------------------";
1235 for (size_t i = cur.depth(), n = cur.anchor_.depth(); i < n; ++i) {
1236 os << "------------------------------- | " << cur.anchor_[i] << "\n";
1238 os << " selection: " << cur.selection_
1239 << " x_target: " << cur.x_target_ << endl;
1244 LyXErr & operator<<(LyXErr & os, Cursor const & cur)
1254 ///////////////////////////////////////////////////////////////////
1257 // The part below is the non-integrated rest of the original math
1258 // cursor. This should be either generalized for texted or moved
1259 // back to mathed (in most cases to InsetMathNest).
1261 ///////////////////////////////////////////////////////////////////
1263 #include "mathed/InsetMathChar.h"
1264 #include "mathed/InsetMathGrid.h"
1265 #include "mathed/InsetMathScript.h"
1266 #include "mathed/InsetMathUnknown.h"
1267 #include "mathed/MathFactory.h"
1268 #include "mathed/MathStream.h"
1269 #include "mathed/MathSupport.h"
1274 bool Cursor::isInside(Inset const * p) const
1276 for (size_t i = 0; i != depth(); ++i)
1277 if (&operator[](i).inset() == p)
1283 void Cursor::leaveInset(Inset const & inset)
1285 for (size_t i = 0; i != depth(); ++i) {
1286 if (&operator[](i).inset() == &inset) {
1294 bool Cursor::openable(MathAtom const & t) const
1305 // we can't move into anything new during selection
1306 if (depth() >= anchor_.depth())
1308 if (t.nucleus() != &anchor_[depth()].inset())
1315 void Cursor::setScreenPos(int x, int /*y*/)
1318 //bruteFind(*this, x, y, 0, bv().workWidth(), 0, bv().workHeight());
1323 void Cursor::plainErase()
1325 cell().erase(pos());
1329 void Cursor::markInsert()
1331 insert(char_type(0));
1335 void Cursor::markErase()
1337 cell().erase(pos());
1341 void Cursor::plainInsert(MathAtom const & t)
1343 cell().insert(pos(), t);
1345 inset().setBuffer(bv_->buffer());
1347 forceBufferUpdate();
1351 void Cursor::insert(docstring const & str)
1353 for_each(str.begin(), str.end(),
1354 bind(static_cast<void(Cursor::*)(char_type)>
1355 (&Cursor::insert), this, _1));
1359 void Cursor::insert(char_type c)
1361 //lyxerr << "Cursor::insert char '" << c << "'" << endl;
1362 LASSERT(!empty(), /**/);
1364 cap::selClearOrDel(*this);
1365 insert(new InsetMathChar(c));
1367 text()->insertChar(*this, c);
1372 void Cursor::insert(MathAtom const & t)
1374 //lyxerr << "Cursor::insert MathAtom '" << t << "'" << endl;
1376 cap::selClearOrDel(*this);
1381 void Cursor::insert(Inset * inset0)
1383 LASSERT(inset0, /**/);
1385 insert(MathAtom(inset0->asInsetMath()));
1387 text()->insertInset(*this, inset0);
1388 inset0->setBuffer(bv_->buffer());
1390 if (inset0->isLabeled())
1391 forceBufferUpdate();
1396 int Cursor::niceInsert(docstring const & t, Parse::flags f, bool enter)
1398 MathData ar(buffer());
1400 if (ar.size() == 1 && (enter || selection()))
1408 void Cursor::niceInsert(MathAtom const & t)
1411 docstring const safe = cap::grabAndEraseSelection(*this);
1413 // If possible, enter the new inset and move the contents of the selection
1414 if (t->isActive()) {
1416 // be careful here: don't use 'pushBackward(t)' as this we need to
1417 // push the clone, not the original
1418 pushBackward(*nextInset());
1419 // We may not use niceInsert here (recursion)
1420 MathData ar(buffer());
1423 } else if (t->asMacro() && !safe.empty()) {
1424 MathData ar(buffer());
1426 docstring const name = t->asMacro()->name();
1427 MacroData const * data = buffer()->getMacro(name);
1428 if (data && data->numargs() - data->optionals() > 0) {
1429 plainInsert(MathAtom(new InsetMathBrace(ar)));
1436 void Cursor::insert(MathData const & ar)
1440 cap::eraseSelection(*this);
1441 cell().insert(pos(), ar);
1443 // FIXME audit setBuffer calls
1444 inset().setBuffer(bv_->buffer());
1448 bool Cursor::backspace()
1450 autocorrect() = false;
1453 cap::eraseSelection(*this);
1458 // If empty cell, and not part of a big cell
1459 if (lastpos() == 0 && inset().nargs() == 1) {
1461 // Directly delete empty cell: [|[]] => [|]
1467 // [|], can not delete from inside
1478 if (inMacroMode()) {
1479 InsetMathUnknown * p = activeMacro();
1480 if (p->name().size() > 1) {
1481 p->setName(p->name().substr(0, p->name().size() - 1));
1486 if (pos() != 0 && prevAtom()->nargs() > 0) {
1487 // let's require two backspaces for 'big stuff' and
1488 // highlight on the first
1500 bool Cursor::erase()
1502 autocorrect() = false;
1507 cap::eraseSelection(*this);
1511 // delete empty cells if possible
1512 if (pos() == lastpos() && inset().idxDelete(idx()))
1515 // special behaviour when in last position of cell
1516 if (pos() == lastpos()) {
1517 bool one_cell = inset().nargs() == 1;
1518 if (one_cell && lastpos() == 0) {
1520 // Directly delete empty cell: [|[]] => [|]
1526 // [|], can not delete from inside
1531 inset().idxGlue(idx());
1535 // 'clever' UI hack: only erase large items if previously slected
1536 if (pos() != lastpos() && nextAtom()->nargs() > 0) {
1551 DocIterator save = *this;
1552 FuncRequest cmd(selection() ? LFUN_UP_SELECT : LFUN_UP, docstring());
1553 this->dispatch(cmd);
1554 if (disp_.dispatched())
1557 autocorrect() = false;
1565 DocIterator save = *this;
1566 FuncRequest cmd(selection() ? LFUN_DOWN_SELECT : LFUN_DOWN, docstring());
1567 this->dispatch(cmd);
1568 if (disp_.dispatched())
1571 autocorrect() = false;
1576 bool Cursor::macroModeClose()
1580 InsetMathUnknown * p = activeMacro();
1582 MathData selection(buffer());
1583 asArray(p->selection(), selection);
1584 docstring const s = p->name();
1586 cell().erase(pos());
1588 // do nothing if the macro name is empty
1592 // trigger updates of macros, at least, if no full
1593 // updates take place anyway
1594 screenUpdateFlags(Update::Force);
1596 docstring const name = s.substr(1);
1597 InsetMathNest * const in = inset().asInsetMath()->asNestInset();
1598 if (in && in->interpretString(*this, s))
1600 MathAtom atom = buffer()->getMacro(name, *this, false) ?
1601 MathAtom(new MathMacro(buffer(), name)) : createInsetMath(name, buffer());
1603 // try to put argument into macro, if we just inserted a macro
1604 bool macroArg = false;
1605 MathMacro * atomAsMacro = atom.nucleus()->asMacro();
1607 // macros here are still unfolded (in init mode in fact). So
1608 // we have to resolve the macro here manually and check its arity
1609 // to put the selection behind it if arity > 0.
1610 MacroData const * data = buffer()->getMacro(atomAsMacro->name());
1611 if (selection.size() > 0 && data && data->numargs() - data->optionals() > 0) {
1613 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 1);
1615 // non-greedy case. Do not touch the arguments behind
1616 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 0);
1619 // insert remembered selection into first argument of a non-macro
1620 else if (atom.nucleus()->nargs() > 0)
1621 atom.nucleus()->cell(0).append(selection);
1625 // finally put the macro argument behind, if needed
1627 if (selection.size() > 1 || selection[0]->asScriptInset())
1628 plainInsert(MathAtom(new InsetMathBrace(selection)));
1637 docstring Cursor::macroName()
1639 return inMacroMode() ? activeMacro()->name() : docstring();
1643 void Cursor::handleNest(MathAtom const & a, int c)
1645 //lyxerr << "Cursor::handleNest: " << c << endl;
1647 asArray(cap::grabAndEraseSelection(*this), t.nucleus()->cell(c));
1650 pushBackward(*nextInset());
1654 int Cursor::targetX() const
1656 if (x_target() != -1)
1665 int Cursor::textTargetOffset() const
1667 return textTargetOffset_;
1671 void Cursor::setTargetX()
1680 bool Cursor::inMacroMode() const
1684 if (pos() == 0 || cell().empty())
1686 InsetMathUnknown const * p = prevAtom()->asUnknownInset();
1687 return p && !p->final();
1691 InsetMathUnknown * Cursor::activeMacro()
1693 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1697 InsetMathUnknown const * Cursor::activeMacro() const
1699 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1703 void Cursor::pullArg()
1706 MathData ar = cell();
1707 if (popBackward() && inMathed()) {
1709 cell().insert(pos(), ar);
1712 //formula()->mutateToText();
1717 void Cursor::touch()
1721 DocIterator::const_iterator it = begin();
1722 DocIterator::const_iterator et = end();
1723 for ( ; it != et; ++it)
1729 void Cursor::normalize()
1731 if (idx() > lastidx()) {
1732 lyxerr << "this should not really happen - 1: "
1733 << idx() << ' ' << nargs()
1734 << " in: " << &inset() << endl;
1738 if (pos() > lastpos()) {
1739 lyxerr << "this should not really happen - 2: "
1740 << pos() << ' ' << lastpos() << " in idx: " << idx()
1742 odocstringstream os;
1743 WriteStream wi(os, false, true, WriteStream::wsDefault);
1744 inset().asInsetMath()->write(wi);
1745 lyxerr << to_utf8(os.str()) << endl;
1751 bool Cursor::upDownInMath(bool up)
1753 // Be warned: The 'logic' implemented in this function is highly
1754 // fragile. A distance of one pixel or a '<' vs '<=' _really
1755 // matters. So fiddle around with it only if you think you know
1756 // what you are doing!
1760 xo = beforeDispatchPosX_;
1762 // check if we had something else in mind, if not, this is the future
1764 if (x_target_ == -1)
1766 else if (inset().asInsetText() && xo - textTargetOffset() != x_target()) {
1767 // In text mode inside the line (not left or right) possibly set a new target_x,
1768 // but only if we are somewhere else than the previous target-offset.
1770 // We want to keep the x-target on subsequent up/down movements
1771 // that cross beyond the end of short lines. Thus a special
1772 // handling when the cursor is at the end of line: Use the new
1773 // x-target only if the old one was before the end of line
1774 // or the old one was after the beginning of the line
1775 bool inRTL = isWithinRtlParagraph(*this);
1779 left = pos() == textRow().endpos();
1780 right = pos() == textRow().pos();
1782 left = pos() == textRow().pos();
1783 right = pos() == textRow().endpos();
1785 if ((!left && !right) ||
1786 (left && !right && xo < x_target_) ||
1787 (!left && right && x_target_ < xo))
1794 // try neigbouring script insets
1796 if (inMathed() && !selection()) {
1799 InsetMathScript const * p = prevAtom()->asScriptInset();
1800 if (p && p->has(up)) {
1802 push(*const_cast<InsetMathScript*>(p));
1803 idx() = p->idxOfScript(up);
1806 // we went in the right direction? Otherwise don't jump into the script
1810 int oy = beforeDispatchPosY_;
1811 if ((!up && y <= oy) ||
1820 if (pos() != lastpos()) {
1821 InsetMathScript const * p = nextAtom()->asScriptInset();
1822 if (p && p->has(up)) {
1823 push(*const_cast<InsetMathScript*>(p));
1824 idx() = p->idxOfScript(up);
1827 // we went in the right direction? Otherwise don't jump into the script
1831 int oy = beforeDispatchPosY_;
1832 if ((!up && y <= oy) ||
1841 // try to find an inset that knows better then we,
1842 if (inset().idxUpDown(*this, up)) {
1843 //lyxerr << "idxUpDown triggered" << endl;
1844 // try to find best position within this inset
1846 setCursor(bruteFind2(*this, xo, yo));
1850 // any improvement going just out of inset?
1851 if (popBackward() && inMathed()) {
1852 //lyxerr << "updown: popBackward succeeded" << endl;
1855 int yold = beforeDispatchPosY_;
1857 if (up ? ynew < yold : ynew > yold)
1861 // no success, we are probably at the document top or bottom
1867 bool Cursor::atFirstOrLastRow(bool up)
1869 TextMetrics const & tm = bv_->textMetrics(text());
1870 ParagraphMetrics const & pm = tm.parMetrics(pit());
1873 if (pos() && boundary())
1874 row = pm.pos2row(pos() - 1);
1876 row = pm.pos2row(pos());
1879 if (pit() == 0 && row == 0)
1882 if (pit() + 1 >= int(text()->paragraphs().size()) &&
1883 row + 1 >= int(pm.rows().size()))
1889 bool Cursor::upDownInText(bool up, bool & updateNeeded)
1891 LASSERT(text(), /**/);
1897 xo = beforeDispatchPosX_;
1899 // update the targetX - this is here before the "return false"
1900 // to set a new target which can be used by InsetTexts above
1901 // if we cannot move up/down inside this inset anymore
1902 if (x_target_ == -1)
1904 else if (xo - textTargetOffset() != x_target() &&
1905 depth() == beforeDispatchCursor_.depth()) {
1906 // In text mode inside the line (not left or right) possibly set a new target_x,
1907 // but only if we are somewhere else than the previous target-offset.
1909 // We want to keep the x-target on subsequent up/down movements
1910 // that cross beyond the end of short lines. Thus a special
1911 // handling when the cursor is at the end of line: Use the new
1912 // x-target only if the old one was before the end of line
1913 // or the old one was after the beginning of the line
1914 bool inRTL = isWithinRtlParagraph(*this);
1918 left = pos() == textRow().endpos();
1919 right = pos() == textRow().pos();
1921 left = pos() == textRow().pos();
1922 right = pos() == textRow().endpos();
1924 if ((!left && !right) ||
1925 (left && !right && xo < x_target_) ||
1926 (!left && right && x_target_ < xo))
1933 // first get the current line
1934 TextMetrics & tm = bv_->textMetrics(text());
1935 ParagraphMetrics const & pm = tm.parMetrics(pit());
1937 if (pos() && boundary())
1938 row = pm.pos2row(pos() - 1);
1940 row = pm.pos2row(pos());
1942 if (atFirstOrLastRow(up)) {
1943 // Is there a place for the cursor to go ? If yes, we
1944 // can execute the DEPM, otherwise we should keep the
1945 // paragraph to host the cursor.
1946 Cursor dummy = *this;
1947 bool valid_destination = false;
1948 for(; dummy.depth(); dummy.pop())
1949 if (!dummy.atFirstOrLastRow(up)) {
1950 valid_destination = true;
1954 // will a next dispatch follow and if there is a new
1955 // dispatch will it move the cursor out ?
1956 if (depth() > 1 && valid_destination) {
1957 // The cursor hasn't changed yet. This happens when
1958 // you e.g. move out of an inset. And to give the
1959 // DEPM the possibility of doing something we must
1960 // provide it with two different cursors. (Lgb, vfr)
1962 dummy.pos() = dummy.pos() == 0 ? dummy.lastpos() : 0;
1963 dummy.pit() = dummy.pit() == 0 ? dummy.lastpit() : 0;
1965 updateNeeded |= bv().checkDepm(dummy, *this);
1966 updateTextTargetOffset();
1968 forceBufferUpdate();
1973 // with and without selection are handled differently
1975 int yo = bv().getPos(*this).y_;
1977 // To next/previous row
1979 tm.editXY(*this, xo, yo - textRow().ascent() - 1);
1981 tm.editXY(*this, xo, yo + textRow().descent() + 1);
1984 // This happens when you move out of an inset.
1985 // And to give the DEPM the possibility of doing
1986 // something we must provide it with two different
1988 Cursor dummy = *this;
1991 if (bv().checkDepm(dummy, old)) {
1992 updateNeeded = true;
1993 // Make sure that cur gets back whatever happened to dummy (Lgb)
1997 // if there is a selection, we stay out of any inset,
1998 // and just jump to the right position:
2004 } else if (pit() > 0) {
2006 TextMetrics & tm = bv_->textMetrics(text());
2007 if (!tm.contains(pit()))
2008 tm.newParMetricsUp();
2009 ParagraphMetrics const & pmcur = tm.parMetrics(pit());
2010 next_row = pmcur.rows().size() - 1;
2013 if (row + 1 < int(pm.rows().size())) {
2015 } else if (pit() + 1 < int(text()->paragraphs().size())) {
2017 TextMetrics & tm = bv_->textMetrics(text());
2018 if (!tm.contains(pit()))
2019 tm.newParMetricsDown();
2023 top().pos() = min(tm.x2pos(pit(), next_row, xo), top().lastpos());
2025 int const xpos = tm.x2pos(pit(), next_row, xo);
2026 bool const at_end_row = xpos == tm.x2pos(pit(), next_row, tm.width());
2027 bool const at_beg_row = xpos == tm.x2pos(pit(), next_row, 0);
2029 if (at_end_row && at_beg_row)
2030 // make sure the cursor ends up on this row
2033 boundary(at_end_row);
2035 updateNeeded |= bv().checkDepm(*this, old);
2039 forceBufferUpdate();
2040 updateTextTargetOffset();
2045 void Cursor::handleFont(string const & font)
2047 LYXERR(Debug::DEBUG, font);
2051 safe = cap::grabAndEraseSelection(*this);
2056 if (lastpos() != 0) {
2057 // something left in the cell
2059 // cursor in first position
2061 } else if (pos() == lastpos()) {
2062 // cursor in last position
2065 // cursor in between. split cell
2066 MathData::iterator bt = cell().begin();
2067 MathAtom at = createInsetMath(from_utf8(font), buffer());
2068 at.nucleus()->cell(0) = MathData(buffer(), bt, bt + pos());
2069 cell().erase(bt, bt + pos());
2074 // nothing left in the cell
2083 void Cursor::message(docstring const & msg) const
2085 disp_.setMessage(msg);
2089 void Cursor::errorMessage(docstring const & msg) const
2091 disp_.setMessage(msg);
2092 disp_.setError(true);
2097 docstring parbreak(Cursor const * cur)
2099 odocstringstream os;
2101 // only add blank line if we're not in a ParbreakIsNewline situation
2102 if (!cur->inset().getLayout().parbreakIsNewline()
2103 && !cur->paragraph().layout().parbreak_is_newline)
2110 docstring Cursor::selectionAsString(bool with_label) const
2116 return cap::grabSelection(*this);
2118 int const label = with_label
2119 ? AS_STR_LABEL | AS_STR_INSETS : AS_STR_INSETS;
2121 idx_type const startidx = selBegin().idx();
2122 idx_type const endidx = selEnd().idx();
2123 if (startidx != endidx) {
2124 // multicell selection
2125 InsetTabular * table = inset().asInsetTabular();
2126 LASSERT(table, return docstring());
2127 return table->asString(startidx, endidx);
2130 ParagraphList const & pars = text()->paragraphs();
2132 pit_type const startpit = selBegin().pit();
2133 pit_type const endpit = selEnd().pit();
2134 size_t const startpos = selBegin().pos();
2135 size_t const endpos = selEnd().pos();
2137 if (startpit == endpit)
2138 return pars[startpit].asString(startpos, endpos, label);
2140 // First paragraph in selection
2141 docstring result = pars[startpit].
2142 asString(startpos, pars[startpit].size(), label)
2145 // The paragraphs in between (if any)
2146 for (pit_type pit = startpit + 1; pit != endpit; ++pit) {
2147 Paragraph const & par = pars[pit];
2148 result += par.asString(0, par.size(), label)
2152 // Last paragraph in selection
2153 result += pars[endpit].asString(0, endpos, label);
2159 docstring Cursor::currentState() const
2162 odocstringstream os;
2168 return text()->currentState(*this);
2174 docstring Cursor::getPossibleLabel() const
2176 return inMathed() ? from_ascii("eq:") : text()->getPossibleLabel(*this);
2180 Encoding const * Cursor::getEncoding() const
2184 CursorSlice const & sl = innerTextSlice();
2185 Text const & text = *sl.text();
2186 Font font = text.getPar(sl.pit()).getFont(
2187 bv().buffer().params(), sl.pos(), text.outerFont(sl.pit()));
2188 return font.language()->encoding();
2192 void Cursor::undispatched() const
2194 disp_.dispatched(false);
2198 void Cursor::dispatched() const
2200 disp_.dispatched(true);
2204 void Cursor::screenUpdateFlags(Update::flags f) const
2206 disp_.screenUpdate(f);
2210 void Cursor::forceBufferUpdate() const
2212 disp_.forceBufferUpdate();
2216 void Cursor::clearBufferUpdate() const
2218 disp_.clearBufferUpdate();
2222 bool Cursor::needBufferUpdate() const
2224 return disp_.needBufferUpdate();
2228 void Cursor::noScreenUpdate() const
2230 disp_.screenUpdate(Update::None);
2234 Font Cursor::getFont() const
2236 // The logic here should more or less match to the Cursor::setCurrentFont
2237 // logic, i.e. the cursor height should give a hint what will happen
2238 // if a character is entered.
2240 // HACK. far from being perfect...
2242 CursorSlice const & sl = innerTextSlice();
2243 Text const & text = *sl.text();
2244 Paragraph const & par = text.getPar(sl.pit());
2246 // on boundary, so we are really at the character before
2247 pos_type pos = sl.pos();
2248 if (pos > 0 && boundary())
2251 // on space? Take the font before (only for RTL boundary stay)
2253 TextMetrics const & tm = bv().textMetrics(&text);
2254 if (pos == sl.lastpos()
2255 || (par.isSeparator(pos)
2256 && !tm.isRTLBoundary(sl.pit(), pos)))
2260 // get font at the position
2261 Font font = par.getFont(buffer()->params(), pos,
2262 text.outerFont(sl.pit()));
2268 bool Cursor::fixIfBroken()
2270 bool const broken_cursor = DocIterator::fixIfBroken();
2271 bool const broken_anchor = anchor_.fixIfBroken();
2273 if (broken_cursor || broken_anchor) {
2281 bool notifyCursorLeavesOrEnters(Cursor const & old, Cursor & cur)
2283 // find inset in common
2285 for (i = 0; i < old.depth() && i < cur.depth(); ++i) {
2286 if (&old[i].inset() != &cur[i].inset())
2290 // update words if we just moved to another paragraph
2291 if (i == old.depth() && i == cur.depth()
2292 && !cur.buffer()->isClean()
2293 && cur.inTexted() && old.inTexted()
2294 && cur.pit() != old.pit()) {
2295 old.paragraph().updateWords();
2298 // notify everything on top of the common part in old cursor,
2299 // but stop if the inset claims the cursor to be invalid now
2300 for (size_type j = i; j < old.depth(); ++j) {
2301 Cursor inset_pos = old;
2302 inset_pos.cutOff(j);
2303 if (old[j].inset().notifyCursorLeaves(inset_pos, cur))
2307 // notify everything on top of the common part in new cursor,
2308 // but stop if the inset claims the cursor to be invalid now
2309 for (; i < cur.depth(); ++i) {
2310 if (cur[i].inset().notifyCursorEnters(cur))
2318 void Cursor::setCurrentFont()
2320 CursorSlice const & cs = innerTextSlice();
2321 Paragraph const & par = cs.paragraph();
2322 pos_type cpit = cs.pit();
2323 pos_type cpos = cs.pos();
2324 Text const & ctext = *cs.text();
2325 TextMetrics const & tm = bv().textMetrics(&ctext);
2327 // are we behind previous char in fact? -> go to that char
2328 if (cpos > 0 && boundary())
2331 // find position to take the font from
2333 // paragraph end? -> font of last char
2334 if (cpos == lastpos())
2336 // on space? -> look at the words in front of space
2337 else if (cpos > 0 && par.isSeparator(cpos)) {
2338 // abc| def -> font of c
2339 // abc |[WERBEH], i.e. boundary==true -> font of c
2340 // abc [WERBEH]| def, font of the space
2341 if (!tm.isRTLBoundary(cpit, cpos))
2347 BufferParams const & bufparams = buffer()->params();
2348 current_font = par.getFontSettings(bufparams, cpos);
2349 real_current_font = tm.displayFont(cpit, cpos);
2351 // special case for paragraph end
2352 if (cs.pos() == lastpos()
2353 && tm.isRTLBoundary(cpit, cs.pos())
2355 Language const * lang = par.getParLanguage(bufparams);
2356 current_font.setLanguage(lang);
2357 current_font.fontInfo().setNumber(FONT_OFF);
2358 real_current_font.setLanguage(lang);
2359 real_current_font.fontInfo().setNumber(FONT_OFF);
2364 bool Cursor::textUndo()
2366 DocIterator dit = *this;
2367 // Undo::textUndo() will modify dit.
2368 if (!buffer()->undo().textUndo(dit))
2378 bool Cursor::textRedo()
2380 DocIterator dit = *this;
2381 // Undo::textRedo() will modify dit.
2382 if (!buffer()->undo().textRedo(dit))
2392 void Cursor::finishUndo() const
2394 buffer()->undo().finishUndo();
2398 void Cursor::beginUndoGroup() const
2400 buffer()->undo().beginUndoGroup();
2404 void Cursor::endUndoGroup() const
2406 buffer()->undo().endUndoGroup();
2410 void Cursor::recordUndo(UndoKind kind, pit_type from, pit_type to) const
2412 buffer()->undo().recordUndo(*this, kind, from, to);
2416 void Cursor::recordUndo(UndoKind kind, pit_type from) const
2418 buffer()->undo().recordUndo(*this, kind, from);
2422 void Cursor::recordUndo(UndoKind kind) const
2424 buffer()->undo().recordUndo(*this, kind);
2428 void Cursor::recordUndoInset(UndoKind kind, Inset const * inset) const
2430 buffer()->undo().recordUndoInset(*this, kind, inset);
2434 void Cursor::recordUndoFullDocument() const
2436 buffer()->undo().recordUndoFullDocument(*this);
2440 void Cursor::recordUndoSelection() const
2443 if (cap::multipleCellsSelected(*this))
2448 buffer()->undo().recordUndo(*this, ATOMIC_UNDO,
2449 selBegin().pit(), selEnd().pit());
2454 void Cursor::checkBufferStructure()
2456 Buffer const * master = buffer()->masterBuffer();
2457 master->tocBackend().updateItem(*this);
2458 if (master != buffer() && !master->hasGuiDelegate())
2459 // In case the master has no gui associated with it,
2460 // the TocItem is not updated (part of bug 5699).
2461 buffer()->tocBackend().updateItem(*this);