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"
29 #include "LyXFunc.h" // only for setMessage()
31 #include "paragraph_funcs.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 <boost/bind.hpp>
65 bool positionable(DocIterator const & cursor, DocIterator const & anchor)
67 // avoid deeper nested insets when selecting
68 if (cursor.depth() > anchor.depth())
71 // anchor might be deeper, should have same path then
72 for (size_t i = 0; i < cursor.depth(); ++i)
73 if (&cursor[i].inset() != &anchor[i].inset())
76 // position should be ok.
81 // Find position closest to (x, y) in cell given by iter.
82 // Used only in mathed
83 DocIterator bruteFind2(Cursor const & c, int x, int y)
85 double best_dist = numeric_limits<double>::max();
92 et.top().pos() = et.top().asInsetMath()->cell(et.top().idx()).size();
93 for (size_t i = 0;; ++i) {
96 Inset const * inset = &it.inset();
97 map<Inset const *, Geometry> const & data =
98 c.bv().coordCache().getInsets().getData();
99 map<Inset const *, Geometry>::const_iterator I = data.find(inset);
101 // FIXME: in the case where the inset is not in the cache, this
102 // means that no part of it is visible on screen. In this case
103 // we don't do elaborate search and we just return the forwarded
104 // DocIterator at its beginning.
105 if (I == data.end()) {
110 Point o = I->second.pos;
111 inset->cursorPos(c.bv(), it.top(), c.boundary(), xo, yo);
112 // Convert to absolute
115 double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
116 // '<=' in order to take the last possible position
117 // this is important for clicking behind \sum in e.g. '\sum_i a'
118 LYXERR(Debug::DEBUG, "i: " << i << " d: " << d
119 << " best: " << best_dist);
120 if (d <= best_dist) {
133 /// moves position closest to (x, y) in given box
134 bool bruteFind(Cursor & cursor,
135 int x, int y, int xlow, int xhigh, int ylow, int yhigh)
137 LASSERT(!cursor.empty(), return false);
138 Inset & inset = cursor[0].inset();
139 BufferView & bv = cursor.bv();
141 CoordCache::InnerParPosCache const & cache =
142 bv.coordCache().getParPos().find(cursor.bottom().text())->second;
143 // Get an iterator on the first paragraph in the cache
144 DocIterator it(inset);
145 it.push_back(CursorSlice(inset));
146 it.pit() = cache.begin()->first;
147 // Get an iterator after the last paragraph in the cache
148 DocIterator et(inset);
149 et.push_back(CursorSlice(inset));
150 et.pit() = boost::prior(cache.end())->first;
151 if (et.pit() >= et.lastpit())
152 et = doc_iterator_end(inset);
156 double best_dist = numeric_limits<double>::max();;
157 DocIterator best_cursor = et;
159 for ( ; it != et; it.forwardPos(true)) {
160 // avoid invalid nesting when selecting
161 if (!cursor.selection() || positionable(it, cursor.anchor_)) {
162 Point p = bv.getPos(it, false);
165 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
166 double const dx = xo - x;
167 double const dy = yo - y;
168 double const d = dx * dx + dy * dy;
169 // '<=' in order to take the last possible position
170 // this is important for clicking behind \sum in e.g. '\sum_i a'
171 if (d <= best_dist) {
172 // lyxerr << "*" << endl;
180 if (best_cursor != et) {
181 cursor.setCursor(best_cursor);
190 /// moves position closest to (x, y) in given box
191 bool bruteFind3(Cursor & cur, int x, int y, bool up)
193 BufferView & bv = cur.bv();
194 int ylow = up ? 0 : y + 1;
195 int yhigh = up ? y - 1 : bv.workHeight();
197 int xhigh = bv.workWidth();
199 // FIXME: bit more work needed to get 'from' and 'to' right.
200 pit_type from = cur.bottom().pit();
201 //pit_type to = cur.bottom().pit();
202 //lyxerr << "Pit start: " << from << endl;
204 //lyxerr << "bruteFind3: x: " << x << " y: " << y
205 // << " xlow: " << xlow << " xhigh: " << xhigh
206 // << " ylow: " << ylow << " yhigh: " << yhigh
208 Inset & inset = bv.buffer().inset();
209 DocIterator it = doc_iterator_begin(inset);
211 DocIterator et = doc_iterator_end(inset);
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.anchor_))) {
220 Point p = bv.getPos(it, false);
223 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
224 double const dx = xo - x;
225 double const dy = yo - y;
226 double const d = dx * dx + dy * dy;
227 //lyxerr << "itx: " << xo << " ity: " << yo << " d: " << d
228 // << " dx: " << dx << " dy: " << dy
229 // << " idx: " << it.idx() << " pos: " << it.pos()
232 // '<=' in order to take the last possible position
233 // this is important for clicking behind \sum in e.g. '\sum_i a'
234 if (d <= best_dist) {
235 //lyxerr << "*" << endl;
243 //lyxerr << "best_dist: " << best_dist << " cur:\n" << best_cursor << endl;
244 if (best_cursor == et)
246 cur.setCursor(best_cursor);
250 docstring parbreak(Paragraph const & par)
254 // only add blank line if we're not in an ERT or Listings inset
255 if (par.ownerCode() != ERT_CODE
256 && par.ownerCode() != LISTINGS_CODE)
264 // be careful: this is called from the bv's constructor, too, so
265 // bv functions are not yet available!
266 Cursor::Cursor(BufferView & bv)
267 : DocIterator(), bv_(&bv), anchor_(), x_target_(-1), textTargetOffset_(0),
268 selection_(false), mark_(false), logicalpos_(false),
269 current_font(inherit_font)
273 void Cursor::reset(Inset & inset)
276 push_back(CursorSlice(inset));
277 anchor_ = doc_iterator_begin(inset);
285 // this (intentionally) does neither touch anchor nor selection status
286 void Cursor::setCursor(DocIterator const & cur)
288 DocIterator::operator=(cur);
292 void Cursor::dispatch(FuncRequest const & cmd0)
294 LYXERR(Debug::DEBUG, "cmd: " << cmd0 << '\n' << *this);
299 FuncRequest cmd = cmd0;
302 // store some values to be used inside of the handlers
303 beforeDispatchCursor_ = *this;
304 for (; depth(); pop(), boundary(false)) {
305 LYXERR(Debug::DEBUG, "Cursor::dispatch: cmd: "
306 << cmd0 << endl << *this);
307 LASSERT(pos() <= lastpos(), /**/);
308 LASSERT(idx() <= lastidx(), /**/);
309 LASSERT(pit() <= lastpit(), /**/);
311 // The common case is 'LFUN handled, need update', so make the
312 // LFUN handler's life easier by assuming this as default value.
313 // The handler can reset the update and val flags if necessary.
314 disp_.update(Update::FitCursor | Update::Force);
315 disp_.dispatched(true);
316 inset().dispatch(*this, cmd);
317 if (disp_.dispatched())
321 // it completely to get a 'bomb early' behaviour in case this
322 // object will be used again.
323 if (!disp_.dispatched()) {
324 LYXERR(Debug::DEBUG, "RESTORING OLD CURSOR!");
326 disp_.update(Update::None);
327 disp_.dispatched(false);
329 // restore the previous one because nested Cursor::dispatch calls
330 // are possible which would change it
331 beforeDispatchCursor_ = safe.beforeDispatchCursor_;
336 DispatchResult Cursor::result() const
342 BufferView & Cursor::bv() const
349 Buffer & Cursor::buffer() const
352 return bv_->buffer();
358 LASSERT(depth() >= 1, /**/);
363 void Cursor::push(Inset & p)
365 push_back(CursorSlice(p));
366 p.setBuffer(bv_->buffer());
370 void Cursor::pushBackward(Inset & p)
372 LASSERT(!empty(), /**/);
373 //lyxerr << "Entering inset " << t << " front" << endl;
379 bool Cursor::popBackward()
381 LASSERT(!empty(), /**/);
389 bool Cursor::popForward()
391 LASSERT(!empty(), /**/);
392 //lyxerr << "Leaving inset from in back" << endl;
393 const pos_type lp = (depth() > 1) ? (*this)[depth() - 2].lastpos() : 0;
397 pos() += lastpos() - lp + 1;
402 int Cursor::currentMode()
404 LASSERT(!empty(), /**/);
405 for (int i = depth() - 1; i >= 0; --i) {
406 int res = operator[](i).inset().currentMode();
407 if (res != Inset::UNDECIDED_MODE)
410 return Inset::TEXT_MODE;
414 void Cursor::getPos(int & x, int & y) const
416 Point p = bv().getPos(*this, boundary());
422 Row const & Cursor::textRow() const
424 CursorSlice const & cs = innerTextSlice();
425 ParagraphMetrics const & pm = bv().parMetrics(cs.text(), cs.pit());
426 LASSERT(!pm.rows().empty(), /**/);
427 return pm.getRow(pos(), boundary());
431 void Cursor::resetAnchor()
438 bool Cursor::posBackward()
447 bool Cursor::posForward()
449 if (pos() == lastpos())
456 bool Cursor::posVisRight(bool skip_inset)
458 Cursor new_cur = *this; // where we will move to
459 pos_type left_pos; // position visually left of current cursor
460 pos_type right_pos; // position visually right of current cursor
461 bool new_pos_is_RTL; // is new position we're moving to RTL?
463 getSurroundingPos(left_pos, right_pos);
465 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
467 // Are we at an inset?
468 new_cur.pos() = right_pos;
469 new_cur.boundary(false);
471 text()->checkAndActivateInsetVisual(new_cur, right_pos >= pos(), false)) {
472 // we actually move the cursor at the end of this function, for now
473 // we just keep track of the new position in new_cur...
474 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
477 // Are we already at rightmost pos in row?
478 else if (text()->empty() || right_pos == -1) {
481 if (!new_cur.posVisToNewRow(false)) {
482 LYXERR(Debug::RTL, "not moving!");
486 // we actually move the cursor at the end of this function, for now
487 // just keep track of the new position in new_cur...
488 LYXERR(Debug::RTL, "right edge, moving: " << int(new_cur.pit()) << ","
489 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
492 // normal movement to the right
495 // Recall, if the cursor is at position 'x', that means *before*
496 // the character at position 'x'. In RTL, "before" means "to the
497 // right of", in LTR, "to the left of". So currently our situation
498 // is this: the position to our right is 'right_pos' (i.e., we're
499 // currently to the left of 'right_pos'). In order to move to the
500 // right, it depends whether or not the character at 'right_pos' is RTL.
501 new_pos_is_RTL = paragraph().getFontSettings(
502 bv().buffer().params(), right_pos).isVisibleRightToLeft();
503 // If the character at 'right_pos' *is* LTR, then in order to move to
504 // the right of it, we need to be *after* 'right_pos', i.e., move to
505 // position 'right_pos' + 1.
506 if (!new_pos_is_RTL) {
507 new_cur.pos() = right_pos + 1;
508 // set the boundary to true in two situations:
510 // 1. if new_pos is now lastpos, and we're in an RTL paragraph
511 // (this means that we're moving right to the end of an LTR chunk
512 // which is at the end of an RTL paragraph);
513 (new_cur.pos() == lastpos()
514 && paragraph().isRTL(buffer().params()))
515 // 2. if the position *after* right_pos is RTL (we want to be
516 // *after* right_pos, not before right_pos + 1!)
517 || paragraph().getFontSettings(bv().buffer().params(),
518 new_cur.pos()).isVisibleRightToLeft()
520 new_cur.boundary(true);
521 else // set the boundary to false
522 new_cur.boundary(false);
524 // Otherwise (if the character at position 'right_pos' is RTL), then
525 // moving to the right of it is as easy as setting the new position
528 new_cur.pos() = right_pos;
529 new_cur.boundary(false);
534 bool moved = (new_cur.pos() != pos()
535 || new_cur.pit() != pit()
536 || new_cur.boundary() != boundary());
539 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
540 << (new_cur.boundary() ? " (boundary)" : ""));
548 bool Cursor::posVisLeft(bool skip_inset)
550 Cursor new_cur = *this; // where we will move to
551 pos_type left_pos; // position visually left of current cursor
552 pos_type right_pos; // position visually right of current cursor
553 bool new_pos_is_RTL; // is new position we're moving to RTL?
555 getSurroundingPos(left_pos, right_pos);
557 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
559 // Are we at an inset?
560 new_cur.pos() = left_pos;
561 new_cur.boundary(false);
563 text()->checkAndActivateInsetVisual(new_cur, left_pos >= pos(), true)) {
564 // we actually move the cursor at the end of this function, for now
565 // we just keep track of the new position in new_cur...
566 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
569 // Are we already at leftmost pos in row?
570 else if (text()->empty() || left_pos == -1) {
573 if (!new_cur.posVisToNewRow(true)) {
574 LYXERR(Debug::RTL, "not moving!");
578 // we actually move the cursor at the end of this function, for now
579 // just keep track of the new position in new_cur...
580 LYXERR(Debug::RTL, "left edge, moving: " << int(new_cur.pit()) << ","
581 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
584 // normal movement to the left
587 // Recall, if the cursor is at position 'x', that means *before*
588 // the character at position 'x'. In RTL, "before" means "to the
589 // right of", in LTR, "to the left of". So currently our situation
590 // is this: the position to our left is 'left_pos' (i.e., we're
591 // currently to the right of 'left_pos'). In order to move to the
592 // left, it depends whether or not the character at 'left_pos' is RTL.
593 new_pos_is_RTL = paragraph().getFontSettings(
594 bv().buffer().params(), left_pos).isVisibleRightToLeft();
595 // If the character at 'left_pos' *is* RTL, then in order to move to
596 // the left of it, we need to be *after* 'left_pos', i.e., move to
597 // position 'left_pos' + 1.
598 if (new_pos_is_RTL) {
599 new_cur.pos() = left_pos + 1;
600 // set the boundary to true in two situations:
602 // 1. if new_pos is now lastpos and we're in an LTR paragraph
603 // (this means that we're moving left to the end of an RTL chunk
604 // which is at the end of an LTR paragraph);
605 (new_cur.pos() == lastpos()
606 && !paragraph().isRTL(buffer().params()))
607 // 2. if the position *after* left_pos is not RTL (we want to be
608 // *after* left_pos, not before left_pos + 1!)
609 || !paragraph().getFontSettings(bv().buffer().params(),
610 new_cur.pos()).isVisibleRightToLeft()
612 new_cur.boundary(true);
613 else // set the boundary to false
614 new_cur.boundary(false);
616 // Otherwise (if the character at position 'left_pos' is LTR), then
617 // moving to the left of it is as easy as setting the new position
620 new_cur.pos() = left_pos;
621 new_cur.boundary(false);
626 bool moved = (new_cur.pos() != pos()
627 || new_cur.pit() != pit()
628 || new_cur.boundary() != boundary());
631 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
632 << (new_cur.boundary() ? " (boundary)" : ""));
640 void Cursor::getSurroundingPos(pos_type & left_pos, pos_type & right_pos)
642 // preparing bidi tables
643 Paragraph const & par = paragraph();
644 Buffer const & buf = buffer();
645 Row const & row = textRow();
647 bidi.computeTables(par, buf, row);
649 LYXERR(Debug::RTL, "bidi: " << row.pos() << "--" << row.endpos());
651 // The cursor is painted *before* the character at pos(), or, if 'boundary'
652 // is true, *after* the character at (pos() - 1). So we already have one
653 // known position around the cursor:
654 pos_type known_pos = boundary() ? pos() - 1 : pos();
656 // edge case: if we're at the end of the paragraph, things are a little
657 // different (because lastpos is a position which does not really "exist"
658 // --- there's no character there yet).
659 if (known_pos == lastpos()) {
660 if (par.isRTL(buf.params())) {
662 right_pos = bidi.vis2log(row.pos());
664 else { // LTR paragraph
666 left_pos = bidi.vis2log(row.endpos() - 1);
671 // Whether 'known_pos' is to the left or to the right of the cursor depends
672 // on whether it is an RTL or LTR character...
673 bool const cur_is_RTL =
674 par.getFontSettings(buf.params(), known_pos).isVisibleRightToLeft();
675 // ... in the following manner:
676 // For an RTL character, "before" means "to the right" and "after" means
677 // "to the left"; and for LTR, it's the reverse. So, 'known_pos' is to the
678 // right of the cursor if (RTL && boundary) or (!RTL && !boundary):
679 bool known_pos_on_right = (cur_is_RTL == boundary());
681 // So we now know one of the positions surrounding the cursor. Let's
682 // determine the other one:
684 if (known_pos_on_right) {
685 right_pos = known_pos;
686 // *visual* position of 'left_pos':
687 pos_type v_left_pos = bidi.log2vis(right_pos) - 1;
688 // If the position we just identified as 'left_pos' is a "skipped
689 // separator" (a separator which is at the logical end of a row,
690 // except for the last row in a paragraph; such separators are not
691 // painted, so they "are not really there"; note that in bidi text,
692 // such a separator could appear visually in the middle of a row),
693 // set 'left_pos' to the *next* position to the left.
694 if (bidi.inRange(v_left_pos)
695 && bidi.vis2log(v_left_pos) + 1 == row.endpos()
696 && row.endpos() < lastpos()
697 && par.isSeparator(bidi.vis2log(v_left_pos))) {
700 // calculate the logical position of 'left_pos', if in row
701 if (!bidi.inRange(v_left_pos))
704 left_pos = bidi.vis2log(v_left_pos);
705 // If the position we identified as 'right_pos' is a "skipped
706 // separator", set 'right_pos' to the *next* position to the right.
707 if (right_pos + 1 == row.endpos() && row.endpos() < lastpos()
708 && par.isSeparator(right_pos)) {
709 pos_type v_right_pos = bidi.log2vis(right_pos) + 1;
710 if (!bidi.inRange(v_right_pos))
713 right_pos = bidi.vis2log(v_right_pos);
716 else { // known_pos is on the left
717 left_pos = known_pos;
718 // *visual* position of 'right_pos'
719 pos_type v_right_pos = bidi.log2vis(left_pos) + 1;
720 // If the position we just identified as 'right_pos' is a "skipped
721 // separator", set 'right_pos' to the *next* position to the right.
722 if (bidi.inRange(v_right_pos)
723 && bidi.vis2log(v_right_pos) + 1 == row.endpos()
724 && row.endpos() < lastpos()
725 && par.isSeparator(bidi.vis2log(v_right_pos))) {
728 // calculate the logical position of 'right_pos', if in row
729 if (!bidi.inRange(v_right_pos))
732 right_pos = bidi.vis2log(v_right_pos);
733 // If the position we identified as 'left_pos' is a "skipped
734 // separator", set 'left_pos' to the *next* position to the left.
735 if (left_pos + 1 == row.endpos() && row.endpos() < lastpos()
736 && par.isSeparator(left_pos)) {
737 pos_type v_left_pos = bidi.log2vis(left_pos) - 1;
738 if (!bidi.inRange(v_left_pos))
741 left_pos = bidi.vis2log(v_left_pos);
748 bool Cursor::posVisToNewRow(bool movingLeft)
750 Paragraph const & par = paragraph();
751 Buffer const & buf = buffer();
752 Row const & row = textRow();
753 bool par_is_LTR = !par.isRTL(buf.params());
755 // Inside a table, determining whether to move to the next or previous row
756 // should be done based on the table's direction.
758 if (s >= 1 && (*this)[s].inset().asInsetTabular()) {
759 par_is_LTR = !(*this)[s].inset().asInsetTabular()->isRightToLeft(*this);
760 LYXERR(Debug::RTL, "Inside table! par_is_LTR=" << (par_is_LTR ? 1 : 0));
763 // if moving left in an LTR paragraph or moving right in an RTL one,
764 // move to previous row
765 if (par_is_LTR == movingLeft) {
766 if (row.pos() == 0) { // we're at first row in paragraph
767 if (pit() == 0) // no previous paragraph! don't move
769 // move to last pos in previous par
773 } else { // move to previous row in this par
774 pos() = row.pos() - 1; // this is guaranteed to be in previous row
778 // if moving left in an RTL paragraph or moving right in an LTR one,
781 if (row.endpos() == lastpos()) { // we're at last row in paragraph
782 if (pit() == lastpit()) // last paragraph! don't move
784 // move to first row in next par
788 } else { // move to next row in this par
789 pos() = row.endpos();
794 // make sure we're at left-/right-most pos in new row
795 posVisToRowExtremity(!movingLeft);
801 void Cursor::posVisToRowExtremity(bool left)
803 // prepare bidi tables
804 Paragraph const & par = paragraph();
805 Buffer const & buf = buffer();
806 Row const & row = textRow();
808 bidi.computeTables(par, buf, row);
810 LYXERR(Debug::RTL, "entering extremity: " << pit() << "," << pos() << ","
811 << (boundary() ? 1 : 0));
813 if (left) { // move to leftmost position
814 // if this is an RTL paragraph, and we're at the last row in the
815 // paragraph, move to lastpos
816 if (par.isRTL(buf.params()) && row.endpos() == lastpos())
819 pos() = bidi.vis2log(row.pos());
821 // Moving to the leftmost position in the row, the cursor should
822 // normally be placed to the *left* of the leftmost position.
823 // A very common exception, though, is if the leftmost character
824 // also happens to be the separator at the (logical) end of the row
825 // --- in this case, the separator is positioned beyond the left
826 // margin, and we don't want to move the cursor there (moving to
827 // the left of the separator is equivalent to moving to the next
828 // line). So, in this case we actually want to place the cursor
829 // to the *right* of the leftmost position (the separator).
830 // Another exception is if we're moving to the logically last
831 // position in the row, which is *not* a separator: this means
832 // that the entire row has no separators (if there were any, the
833 // row would have been broken there); and therefore in this case
834 // we also move to the *right* of the last position (this indicates
835 // to the user that there is no space after this position, and is
836 // consistent with the behavior in the middle of a row --- moving
837 // right or left moves to the next/previous character; if we were
838 // to move to the *left* of this position, that would simulate
839 // a separator which is not really there!).
840 // Finally, there is an exception to the previous exception: if
841 // this non-separator-but-last-position-in-row is an inset, then
842 // we *do* want to stay to the left of it anyway: this is the
843 // "boundary" which we simulate at insets.
845 bool right_of_pos = false; // do we want to be to the right of pos?
847 // as explained above, if at last pos in row, stay to the right
848 if ((pos() == row.endpos() - 1) && !par.isInset(pos()))
851 // Now we know if we want to be to the left or to the right of pos,
852 // let's make sure we are where we want to be.
853 bool new_pos_is_RTL =
854 par.getFontSettings(buf.params(), pos()).isVisibleRightToLeft();
856 if (new_pos_is_RTL == !right_of_pos) {
863 else { // move to rightmost position
864 // if this is an LTR paragraph, and we're at the last row in the
865 // paragraph, move to lastpos
866 if (!par.isRTL(buf.params()) && row.endpos() == lastpos())
869 pos() = bidi.vis2log(row.endpos() - 1);
871 // Moving to the rightmost position in the row, the cursor should
872 // normally be placed to the *right* of the rightmost position.
873 // A very common exception, though, is if the rightmost character
874 // also happens to be the separator at the (logical) end of the row
875 // --- in this case, the separator is positioned beyond the right
876 // margin, and we don't want to move the cursor there (moving to
877 // the right of the separator is equivalent to moving to the next
878 // line). So, in this case we actually want to place the cursor
879 // to the *left* of the rightmost position (the separator).
880 // Another exception is if we're moving to the logically last
881 // position in the row, which is *not* a separator: this means
882 // that the entire row has no separators (if there were any, the
883 // row would have been broken there); and therefore in this case
884 // we also move to the *left* of the last position (this indicates
885 // to the user that there is no space after this position, and is
886 // consistent with the behavior in the middle of a row --- moving
887 // right or left moves to the next/previous character; if we were
888 // to move to the *right* of this position, that would simulate
889 // a separator which is not really there!).
890 // Finally, there is an exception to the previous exception: if
891 // this non-separator-but-last-position-in-row is an inset, then
892 // we *do* want to stay to the right of it anyway: this is the
893 // "boundary" which we simulate at insets.
895 bool left_of_pos = false; // do we want to be to the left of pos?
897 // as explained above, if at last pos in row, stay to the left
898 if ((pos() == row.endpos() - 1) && !par.isInset(pos()))
901 // Now we know if we want to be to the left or to the right of pos,
902 // let's make sure we are where we want to be.
903 bool new_pos_is_RTL =
904 par.getFontSettings(buf.params(), pos()).isVisibleRightToLeft();
906 if (new_pos_is_RTL == left_of_pos) {
912 LYXERR(Debug::RTL, "leaving extremity: " << pit() << "," << pos() << ","
913 << (boundary() ? 1 : 0));
917 CursorSlice Cursor::anchor() const
919 LASSERT(anchor_.depth() >= depth(), /**/);
920 CursorSlice normal = anchor_[depth() - 1];
921 if (depth() < anchor_.depth() && top() <= normal) {
922 // anchor is behind cursor -> move anchor behind the inset
929 CursorSlice Cursor::selBegin() const
933 return anchor() < top() ? anchor() : top();
937 CursorSlice Cursor::selEnd() const
941 return anchor() > top() ? anchor() : top();
945 DocIterator Cursor::selectionBegin() const
951 // FIXME: This is a work-around for the problem that
952 // CursorSlice doesn't keep track of the boundary.
953 if (anchor() == top())
954 di = anchor_.boundary() > boundary() ? anchor_ : *this;
956 di = anchor() < top() ? anchor_ : *this;
962 DocIterator Cursor::selectionEnd() const
968 // FIXME: This is a work-around for the problem that
969 // CursorSlice doesn't keep track of the boundary.
970 if (anchor() == top())
971 di = anchor_.boundary() < boundary() ? anchor_ : *this;
973 di = anchor() > top() ? anchor_ : *this;
975 if (di.depth() > depth()) {
983 void Cursor::setSelection()
986 // A selection with no contents is not a selection
987 // FIXME: doesnt look ok
988 if (idx() == anchor().idx() &&
989 pit() == anchor().pit() &&
990 pos() == anchor().pos())
995 void Cursor::setSelection(DocIterator const & where, int n)
1004 void Cursor::clearSelection()
1006 setSelection(false);
1012 void Cursor::setTargetX(int x)
1015 textTargetOffset_ = 0;
1019 int Cursor::x_target() const
1025 void Cursor::clearTargetX()
1028 textTargetOffset_ = 0;
1032 void Cursor::updateTextTargetOffset()
1037 textTargetOffset_ = x - x_target_;
1041 void Cursor::info(odocstream & os) const
1043 for (int i = 1, n = depth(); i < n; ++i) {
1044 operator[](i).inset().infoize(os);
1048 Inset const * inset = prevInset();
1049 // prevInset() can return 0 in certain case.
1051 prevInset()->infoize2(os);
1053 // overwite old message
1058 bool Cursor::selHandle(bool sel)
1060 //lyxerr << "Cursor::selHandle" << endl;
1063 if (sel == selection())
1067 cap::saveSelection(*this);
1075 ostream & operator<<(ostream & os, Cursor const & cur)
1077 os << "\n cursor: | anchor:\n";
1078 for (size_t i = 0, n = cur.depth(); i != n; ++i) {
1079 os << " " << cur[i] << " | ";
1080 if (i < cur.anchor_.depth())
1081 os << cur.anchor_[i];
1083 os << "-------------------------------";
1086 for (size_t i = cur.depth(), n = cur.anchor_.depth(); i < n; ++i) {
1087 os << "------------------------------- | " << cur.anchor_[i] << "\n";
1089 os << " selection: " << cur.selection_
1090 << " x_target: " << cur.x_target_ << endl;
1095 LyXErr & operator<<(LyXErr & os, Cursor const & cur)
1105 ///////////////////////////////////////////////////////////////////
1108 // The part below is the non-integrated rest of the original math
1109 // cursor. This should be either generalized for texted or moved
1110 // back to mathed (in most cases to InsetMathNest).
1112 ///////////////////////////////////////////////////////////////////
1114 #include "mathed/InsetMathChar.h"
1115 #include "mathed/InsetMathGrid.h"
1116 #include "mathed/InsetMathScript.h"
1117 #include "mathed/InsetMathUnknown.h"
1118 #include "mathed/MathFactory.h"
1119 #include "mathed/MathStream.h"
1120 #include "mathed/MathSupport.h"
1125 //#define FILEDEBUG 1
1128 bool Cursor::isInside(Inset const * p) const
1130 for (size_t i = 0; i != depth(); ++i)
1131 if (&operator[](i).inset() == p)
1137 void Cursor::leaveInset(Inset const & inset)
1139 for (size_t i = 0; i != depth(); ++i) {
1140 if (&operator[](i).inset() == &inset) {
1148 bool Cursor::openable(MathAtom const & t) const
1159 // we can't move into anything new during selection
1160 if (depth() >= anchor_.depth())
1162 if (t.nucleus() != &anchor_[depth()].inset())
1169 void Cursor::setScreenPos(int x, int /*y*/)
1172 //bruteFind(*this, x, y, 0, bv().workWidth(), 0, bv().workHeight());
1177 void Cursor::plainErase()
1179 cell().erase(pos());
1183 void Cursor::markInsert()
1185 insert(char_type(0));
1189 void Cursor::markErase()
1191 cell().erase(pos());
1195 void Cursor::plainInsert(MathAtom const & t)
1197 cell().insert(pos(), t);
1199 inset().setBuffer(bv_->buffer());
1204 void Cursor::insert(docstring const & str)
1206 for_each(str.begin(), str.end(),
1207 boost::bind(static_cast<void(Cursor::*)(char_type)>
1208 (&Cursor::insert), this, _1));
1212 void Cursor::insert(char_type c)
1214 //lyxerr << "Cursor::insert char '" << c << "'" << endl;
1215 LASSERT(!empty(), /**/);
1217 cap::selClearOrDel(*this);
1218 insert(new InsetMathChar(c));
1220 text()->insertChar(*this, c);
1225 void Cursor::insert(MathAtom const & t)
1227 //lyxerr << "Cursor::insert MathAtom '" << t << "'" << endl;
1229 cap::selClearOrDel(*this);
1234 void Cursor::insert(Inset * inset0)
1236 LASSERT(inset0, /**/);
1238 insert(MathAtom(inset0));
1240 text()->insertInset(*this, inset0);
1241 inset0->setBuffer(bv_->buffer());
1247 void Cursor::niceInsert(docstring const & t, Parse::flags f)
1258 void Cursor::niceInsert(MathAtom const & t)
1261 docstring const safe = cap::grabAndEraseSelection(*this);
1263 // enter the new inset and move the contents of the selection if possible
1264 if (t->isActive()) {
1266 // be careful here: don't use 'pushBackward(t)' as this we need to
1267 // push the clone, not the original
1268 pushBackward(*nextInset());
1269 // We may not use niceInsert here (recursion)
1277 void Cursor::insert(MathData const & ar)
1281 cap::eraseSelection(*this);
1282 cell().insert(pos(), ar);
1287 bool Cursor::backspace()
1289 autocorrect() = false;
1292 cap::eraseSelection(*this);
1297 // If empty cell, and not part of a big cell
1298 if (lastpos() == 0 && inset().nargs() == 1) {
1300 // Directly delete empty cell: [|[]] => [|]
1306 // [|], can not delete from inside
1317 if (inMacroMode()) {
1318 InsetMathUnknown * p = activeMacro();
1319 if (p->name().size() > 1) {
1320 p->setName(p->name().substr(0, p->name().size() - 1));
1325 if (pos() != 0 && prevAtom()->nargs() > 0) {
1326 // let's require two backspaces for 'big stuff' and
1327 // highlight on the first
1339 bool Cursor::erase()
1341 autocorrect() = false;
1346 cap::eraseSelection(*this);
1350 // delete empty cells if possible
1351 if (pos() == lastpos() && inset().idxDelete(idx()))
1354 // special behaviour when in last position of cell
1355 if (pos() == lastpos()) {
1356 bool one_cell = inset().nargs() == 1;
1357 if (one_cell && lastpos() == 0) {
1359 // Directly delete empty cell: [|[]] => [|]
1365 // [|], can not delete from inside
1370 inset().idxGlue(idx());
1374 // 'clever' UI hack: only erase large items if previously slected
1375 if (pos() != lastpos() && nextAtom()->nargs() > 0) {
1390 DocIterator save = *this;
1391 FuncRequest cmd(selection() ? LFUN_UP_SELECT : LFUN_UP, docstring());
1392 this->dispatch(cmd);
1393 if (disp_.dispatched())
1396 autocorrect() = false;
1404 DocIterator save = *this;
1405 FuncRequest cmd(selection() ? LFUN_DOWN_SELECT : LFUN_DOWN, docstring());
1406 this->dispatch(cmd);
1407 if (disp_.dispatched())
1410 autocorrect() = false;
1415 bool Cursor::macroModeClose()
1419 InsetMathUnknown * p = activeMacro();
1422 asArray(p->selection(), selection);
1423 docstring const s = p->name();
1425 cell().erase(pos());
1427 // do nothing if the macro name is empty
1431 // trigger updates of macros, at least, if no full
1432 // updates take place anyway
1433 updateFlags(Update::Force);
1435 docstring const name = s.substr(1);
1436 InsetMathNest * const in = inset().asInsetMath()->asNestInset();
1437 if (in && in->interpretString(*this, s))
1439 MathAtom atom = createInsetMath(name);
1441 // try to put argument into macro, if we just inserted a macro
1442 bool macroArg = false;
1443 MathMacro * atomAsMacro = atom.nucleus()->asMacro();
1445 // macros here are still unfolded (in init mode in fact). So
1446 // we have to resolve the macro here manually and check its arity
1447 // to put the selection behind it if arity > 0.
1448 MacroData const * data = buffer().getMacro(atomAsMacro->name());
1449 if (selection.size() > 0 && data && data->numargs() - data->optionals() > 0) {
1451 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 1);
1453 // non-greedy case. Do not touch the arguments behind
1454 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 0);
1457 // insert remembered selection into first argument of a non-macro
1458 else if (atom.nucleus()->nargs() > 0)
1459 atom.nucleus()->cell(0).append(selection);
1463 // finally put the macro argument behind, if needed
1465 if (selection.size() > 1)
1466 plainInsert(MathAtom(new InsetMathBrace(selection)));
1475 docstring Cursor::macroName()
1477 return inMacroMode() ? activeMacro()->name() : docstring();
1481 void Cursor::handleNest(MathAtom const & a, int c)
1483 //lyxerr << "Cursor::handleNest: " << c << endl;
1485 asArray(cap::grabAndEraseSelection(*this), t.nucleus()->cell(c));
1488 pushBackward(*nextInset());
1492 int Cursor::targetX() const
1494 if (x_target() != -1)
1503 int Cursor::textTargetOffset() const
1505 return textTargetOffset_;
1509 void Cursor::setTargetX()
1518 bool Cursor::inMacroMode() const
1524 InsetMathUnknown const * p = prevAtom()->asUnknownInset();
1525 return p && !p->final();
1529 InsetMathUnknown * Cursor::activeMacro()
1531 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1535 InsetMathUnknown const * Cursor::activeMacro() const
1537 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1541 void Cursor::pullArg()
1544 MathData ar = cell();
1545 if (popBackward() && inMathed()) {
1547 cell().insert(pos(), ar);
1550 //formula()->mutateToText();
1555 void Cursor::touch()
1559 DocIterator::const_iterator it = begin();
1560 DocIterator::const_iterator et = end();
1561 for ( ; it != et; ++it)
1567 void Cursor::normalize()
1569 if (idx() > lastidx()) {
1570 lyxerr << "this should not really happen - 1: "
1571 << idx() << ' ' << nargs()
1572 << " in: " << &inset() << endl;
1576 if (pos() > lastpos()) {
1577 lyxerr << "this should not really happen - 2: "
1578 << pos() << ' ' << lastpos() << " in idx: " << idx()
1580 odocstringstream os;
1581 WriteStream wi(os, false, true, false);
1582 inset().asInsetMath()->write(wi);
1583 lyxerr << to_utf8(os.str()) << endl;
1589 bool Cursor::upDownInMath(bool up)
1591 // Be warned: The 'logic' implemented in this function is highly
1592 // fragile. A distance of one pixel or a '<' vs '<=' _really
1593 // matters. So fiddle around with it only if you think you know
1594 // what you are doing!
1598 xo = theLyXFunc().cursorBeforeDispatchX();
1600 // check if we had something else in mind, if not, this is the future
1602 if (x_target_ == -1)
1604 else if (inset().asInsetText() && xo - textTargetOffset() != x_target()) {
1605 // In text mode inside the line (not left or right) possibly set a new target_x,
1606 // but only if we are somewhere else than the previous target-offset.
1608 // We want to keep the x-target on subsequent up/down movements
1609 // that cross beyond the end of short lines. Thus a special
1610 // handling when the cursor is at the end of line: Use the new
1611 // x-target only if the old one was before the end of line
1612 // or the old one was after the beginning of the line
1613 bool inRTL = isWithinRtlParagraph(*this);
1617 left = pos() == textRow().endpos();
1618 right = pos() == textRow().pos();
1620 left = pos() == textRow().pos();
1621 right = pos() == textRow().endpos();
1623 if ((!left && !right) ||
1624 (left && !right && xo < x_target_) ||
1625 (!left && right && x_target_ < xo))
1632 // try neigbouring script insets
1634 if (inMathed() && !selection()) {
1637 InsetMathScript const * p = prevAtom()->asScriptInset();
1638 if (p && p->has(up)) {
1640 push(*const_cast<InsetMathScript*>(p));
1641 idx() = p->idxOfScript(up);
1644 // we went in the right direction? Otherwise don't jump into the script
1648 int oy = theLyXFunc().cursorBeforeDispatchY();
1649 if ((!up && y <= oy) ||
1658 if (pos() != lastpos()) {
1659 InsetMathScript const * p = nextAtom()->asScriptInset();
1660 if (p && p->has(up)) {
1661 push(*const_cast<InsetMathScript*>(p));
1662 idx() = p->idxOfScript(up);
1665 // we went in the right direction? Otherwise don't jump into the script
1669 int oy = theLyXFunc().cursorBeforeDispatchY();
1670 if ((!up && y <= oy) ||
1679 // try to find an inset that knows better then we,
1680 if (inset().idxUpDown(*this, up)) {
1681 //lyxerr << "idxUpDown triggered" << endl;
1682 // try to find best position within this inset
1684 setCursor(bruteFind2(*this, xo, yo));
1688 // any improvement going just out of inset?
1689 if (popBackward() && inMathed()) {
1690 //lyxerr << "updown: popBackward succeeded" << endl;
1693 int yold = theLyXFunc().cursorBeforeDispatchY();
1695 if (up ? ynew < yold : ynew > yold)
1699 // no success, we are probably at the document top or bottom
1705 bool Cursor::atFirstOrLastRow(bool up)
1707 TextMetrics const & tm = bv_->textMetrics(text());
1708 ParagraphMetrics const & pm = tm.parMetrics(pit());
1711 if (pos() && boundary())
1712 row = pm.pos2row(pos() - 1);
1714 row = pm.pos2row(pos());
1717 if (pit() == 0 && row == 0)
1720 if (pit() + 1 >= int(text()->paragraphs().size()) &&
1721 row + 1 >= int(pm.rows().size()))
1727 bool Cursor::upDownInText(bool up, bool & updateNeeded)
1729 LASSERT(text(), /**/);
1735 xo = theLyXFunc().cursorBeforeDispatchX();
1737 // update the targetX - this is here before the "return false"
1738 // to set a new target which can be used by InsetTexts above
1739 // if we cannot move up/down inside this inset anymore
1740 if (x_target_ == -1)
1742 else if (xo - textTargetOffset() != x_target() &&
1743 depth() == beforeDispatchCursor_.depth()) {
1744 // In text mode inside the line (not left or right) possibly set a new target_x,
1745 // but only if we are somewhere else than the previous target-offset.
1747 // We want to keep the x-target on subsequent up/down movements
1748 // that cross beyond the end of short lines. Thus a special
1749 // handling when the cursor is at the end of line: Use the new
1750 // x-target only if the old one was before the end of line
1751 // or the old one was after the beginning of the line
1752 bool inRTL = isWithinRtlParagraph(*this);
1756 left = pos() == textRow().endpos();
1757 right = pos() == textRow().pos();
1759 left = pos() == textRow().pos();
1760 right = pos() == textRow().endpos();
1762 if ((!left && !right) ||
1763 (left && !right && xo < x_target_) ||
1764 (!left && right && x_target_ < xo))
1771 // first get the current line
1772 TextMetrics & tm = bv_->textMetrics(text());
1773 ParagraphMetrics const & pm = tm.parMetrics(pit());
1775 if (pos() && boundary())
1776 row = pm.pos2row(pos() - 1);
1778 row = pm.pos2row(pos());
1780 if (atFirstOrLastRow(up))
1783 // with and without selection are handled differently
1785 int yo = bv().getPos(*this, boundary()).y_;
1787 // To next/previous row
1789 tm.editXY(*this, xo, yo - textRow().ascent() - 1);
1791 tm.editXY(*this, xo, yo + textRow().descent() + 1);
1794 // This happens when you move out of an inset.
1795 // And to give the DEPM the possibility of doing
1796 // something we must provide it with two different
1798 Cursor dummy = *this;
1801 if (bv().checkDepm(dummy, old)) {
1802 updateNeeded = true;
1803 // Make sure that cur gets back whatever happened to dummy(Lgb)
1807 // if there is a selection, we stay out of any inset, and just jump to the right position:
1811 top().pos() = min(tm.x2pos(pit(), row - 1, xo), top().lastpos());
1812 } else if (pit() > 0) {
1814 TextMetrics & tm = bv_->textMetrics(text());
1815 if (!tm.contains(pit()))
1816 tm.newParMetricsUp();
1817 ParagraphMetrics const & pmcur = tm.parMetrics(pit());
1818 top().pos() = min(tm.x2pos(pit(), pmcur.rows().size() - 1, xo), top().lastpos());
1821 if (row + 1 < int(pm.rows().size())) {
1822 top().pos() = min(tm.x2pos(pit(), row + 1, xo), top().lastpos());
1823 } else if (pit() + 1 < int(text()->paragraphs().size())) {
1825 TextMetrics & tm = bv_->textMetrics(text());
1826 if (!tm.contains(pit()))
1827 tm.newParMetricsDown();
1828 top().pos() = min(tm.x2pos(pit(), 0, xo), top().lastpos());
1832 updateNeeded |= bv().checkDepm(*this, old);
1835 updateTextTargetOffset();
1840 void Cursor::handleFont(string const & font)
1842 LYXERR(Debug::DEBUG, font);
1846 safe = cap::grabAndEraseSelection(*this);
1851 if (lastpos() != 0) {
1852 // something left in the cell
1854 // cursor in first position
1856 } else if (pos() == lastpos()) {
1857 // cursor in last position
1860 // cursor in between. split cell
1861 MathData::iterator bt = cell().begin();
1862 MathAtom at = createInsetMath(from_utf8(font));
1863 at.nucleus()->cell(0) = MathData(bt, bt + pos());
1864 cell().erase(bt, bt + pos());
1869 // nothing left in the cell
1878 void Cursor::message(docstring const & msg) const
1880 theLyXFunc().setMessage(msg);
1884 void Cursor::errorMessage(docstring const & msg) const
1886 theLyXFunc().setErrorMessage(msg);
1890 docstring Cursor::selectionAsString(bool with_label) const
1895 int const label = with_label
1896 ? AS_STR_LABEL | AS_STR_INSETS : AS_STR_INSETS;
1899 idx_type const startidx = selBegin().idx();
1900 idx_type const endidx = selEnd().idx();
1901 if (startidx != endidx) {
1902 // multicell selection
1903 InsetTabular * table = inset().asInsetTabular();
1904 LASSERT(table, return docstring());
1905 return table->asString(startidx, endidx);
1908 ParagraphList const & pars = text()->paragraphs();
1910 pit_type const startpit = selBegin().pit();
1911 pit_type const endpit = selEnd().pit();
1912 size_t const startpos = selBegin().pos();
1913 size_t const endpos = selEnd().pos();
1915 if (startpit == endpit)
1916 return pars[startpit].asString(startpos, endpos, label);
1918 // First paragraph in selection
1919 docstring result = pars[startpit].
1920 asString(startpos, pars[startpit].size(), label)
1921 + parbreak(pars[startpit]);
1923 // The paragraphs in between (if any)
1924 for (pit_type pit = startpit + 1; pit != endpit; ++pit) {
1925 Paragraph const & par = pars[pit];
1926 result += par.asString(0, par.size(), label)
1927 + parbreak(pars[pit]);
1930 // Last paragraph in selection
1931 result += pars[endpit].asString(0, endpos, label);
1937 return cap::grabSelection(*this);
1943 docstring Cursor::currentState() const
1946 odocstringstream os;
1952 return text()->currentState(*this);
1958 docstring Cursor::getPossibleLabel() const
1960 return inMathed() ? from_ascii("eq:") : text()->getPossibleLabel(*this);
1964 Encoding const * Cursor::getEncoding() const
1968 CursorSlice const & sl = innerTextSlice();
1969 Text const & text = *sl.text();
1970 Font font = text.getPar(sl.pit()).getFont(
1971 bv().buffer().params(), sl.pos(), outerFont(sl.pit(), text.paragraphs()));
1972 return font.language()->encoding();
1976 void Cursor::undispatched()
1978 disp_.dispatched(false);
1982 void Cursor::dispatched()
1984 disp_.dispatched(true);
1988 void Cursor::updateFlags(Update::flags f)
1994 void Cursor::noUpdate()
1996 disp_.update(Update::None);
2000 Font Cursor::getFont() const
2002 // The logic here should more or less match to the Cursor::setCurrentFont
2003 // logic, i.e. the cursor height should give a hint what will happen
2004 // if a character is entered.
2006 // HACK. far from being perfect...
2008 CursorSlice const & sl = innerTextSlice();
2009 Text const & text = *sl.text();
2010 Paragraph const & par = text.getPar(sl.pit());
2012 // on boundary, so we are really at the character before
2013 pos_type pos = sl.pos();
2014 if (pos > 0 && boundary())
2017 // on space? Take the font before (only for RTL boundary stay)
2019 TextMetrics const & tm = bv().textMetrics(&text);
2020 if (pos == sl.lastpos()
2021 || (par.isSeparator(pos)
2022 && !tm.isRTLBoundary(sl.pit(), pos)))
2026 // get font at the position
2027 Font font = par.getFont(bv().buffer().params(), pos,
2028 outerFont(sl.pit(), text.paragraphs()));
2034 bool Cursor::fixIfBroken()
2036 if (DocIterator::fixIfBroken()) {
2044 bool notifyCursorLeavesOrEnters(Cursor const & old, Cursor & cur)
2046 // find inset in common
2048 for (i = 0; i < old.depth() && i < cur.depth(); ++i) {
2049 if (&old[i].inset() != &cur[i].inset())
2053 // update words if we just moved to another paragraph
2054 if (i == old.depth() && i == cur.depth()
2055 && !cur.buffer().isClean()
2056 && cur.inTexted() && old.inTexted()
2057 && cur.pit() != old.pit()) {
2058 old.paragraph().updateWords(old.top());
2061 // notify everything on top of the common part in old cursor,
2062 // but stop if the inset claims the cursor to be invalid now
2063 for (size_type j = i; j < old.depth(); ++j) {
2064 Cursor insetPos = old;
2066 if (old[j].inset().notifyCursorLeaves(insetPos, cur))
2070 // notify everything on top of the common part in new cursor,
2071 // but stop if the inset claims the cursor to be invalid now
2072 for (; i < cur.depth(); ++i) {
2073 if (cur[i].inset().notifyCursorEnters(cur))
2081 void Cursor::setCurrentFont()
2083 CursorSlice const & cs = innerTextSlice();
2084 Paragraph const & par = cs.paragraph();
2085 pos_type cpit = cs.pit();
2086 pos_type cpos = cs.pos();
2087 Text const & ctext = *cs.text();
2088 TextMetrics const & tm = bv().textMetrics(&ctext);
2090 // are we behind previous char in fact? -> go to that char
2091 if (cpos > 0 && boundary())
2094 // find position to take the font from
2096 // paragraph end? -> font of last char
2097 if (cpos == lastpos())
2099 // on space? -> look at the words in front of space
2100 else if (cpos > 0 && par.isSeparator(cpos)) {
2101 // abc| def -> font of c
2102 // abc |[WERBEH], i.e. boundary==true -> font of c
2103 // abc [WERBEH]| def, font of the space
2104 if (!tm.isRTLBoundary(cpit, cpos))
2110 BufferParams const & bufparams = buffer().params();
2111 current_font = par.getFontSettings(bufparams, cpos);
2112 real_current_font = tm.displayFont(cpit, cpos);
2114 // special case for paragraph end
2115 if (cs.pos() == lastpos()
2116 && tm.isRTLBoundary(cpit, cs.pos())
2118 Language const * lang = par.getParLanguage(bufparams);
2119 current_font.setLanguage(lang);
2120 current_font.fontInfo().setNumber(FONT_OFF);
2121 real_current_font.setLanguage(lang);
2122 real_current_font.fontInfo().setNumber(FONT_OFF);
2127 bool Cursor::textUndo()
2129 DocIterator dit = *this;
2130 // Undo::textUndo() will modify dit.
2131 if (!bv_->buffer().undo().textUndo(dit))
2141 bool Cursor::textRedo()
2143 DocIterator dit = *this;
2144 // Undo::textRedo() will modify dit.
2145 if (!bv_->buffer().undo().textRedo(dit))
2155 void Cursor::finishUndo() const
2157 bv_->buffer().undo().finishUndo();
2161 void Cursor::beginUndoGroup() const
2163 bv_->buffer().undo().beginUndoGroup();
2167 void Cursor::endUndoGroup() const
2169 bv_->buffer().undo().endUndoGroup();
2173 void Cursor::recordUndo(UndoKind kind, pit_type from, pit_type to) const
2175 bv_->buffer().undo().recordUndo(*this, kind, from, to);
2179 void Cursor::recordUndo(UndoKind kind, pit_type from) const
2181 bv_->buffer().undo().recordUndo(*this, kind, from);
2185 void Cursor::recordUndo(UndoKind kind) const
2187 bv_->buffer().undo().recordUndo(*this, kind);
2191 void Cursor::recordUndoInset(UndoKind kind) const
2193 bv_->buffer().undo().recordUndoInset(*this, kind);
2197 void Cursor::recordUndoFullDocument() const
2199 bv_->buffer().undo().recordUndoFullDocument(*this);
2203 void Cursor::recordUndoSelection() const
2206 if (cap::multipleCellsSelected(*this))
2211 bv_->buffer().undo().recordUndo(*this, ATOMIC_UNDO,
2212 selBegin().pit(), selEnd().pit());
2216 void Cursor::checkBufferStructure()
2218 Buffer const * master = buffer().masterBuffer();
2219 master->tocBackend().updateItem(*this);