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 DocIterator it = doc_iterator_begin(cur.buffer());
210 DocIterator et = doc_iterator_end(cur.buffer());
212 double best_dist = numeric_limits<double>::max();
213 DocIterator best_cursor = et;
215 for ( ; it != et; it.forwardPos()) {
216 // avoid invalid nesting when selecting
217 if (bv.cursorStatus(it) == CUR_INSIDE
218 && (!cur.selection() || positionable(it, cur.anchor_))) {
219 Point p = bv.getPos(it, false);
222 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
223 double const dx = xo - x;
224 double const dy = yo - y;
225 double const d = dx * dx + dy * dy;
226 //lyxerr << "itx: " << xo << " ity: " << yo << " d: " << d
227 // << " dx: " << dx << " dy: " << dy
228 // << " idx: " << it.idx() << " pos: " << it.pos()
231 // '<=' in order to take the last possible position
232 // this is important for clicking behind \sum in e.g. '\sum_i a'
233 if (d <= best_dist) {
234 //lyxerr << "*" << endl;
242 //lyxerr << "best_dist: " << best_dist << " cur:\n" << best_cursor << endl;
243 if (best_cursor == et)
245 cur.setCursor(best_cursor);
249 docstring parbreak(Paragraph const & par)
253 // only add blank line if we're not in an ERT or Listings inset
254 if (par.ownerCode() != ERT_CODE && par.ownerCode() != LISTINGS_CODE)
262 // be careful: this is called from the bv's constructor, too, so
263 // bv functions are not yet available!
264 Cursor::Cursor(BufferView & bv)
265 : DocIterator(&bv.buffer()), bv_(&bv), anchor_(),
266 x_target_(-1), textTargetOffset_(0),
267 selection_(false), mark_(false), logicalpos_(false),
268 current_font(inherit_font)
272 void Cursor::reset(Inset & inset)
275 push_back(CursorSlice(inset));
276 anchor_ = doc_iterator_begin(&inset.buffer(), &inset);
284 // this (intentionally) does neither touch anchor nor selection status
285 void Cursor::setCursor(DocIterator const & cur)
287 DocIterator::operator=(cur);
291 void Cursor::dispatch(FuncRequest const & cmd0)
293 LYXERR(Debug::DEBUG, "cmd: " << cmd0 << '\n' << *this);
298 FuncRequest cmd = cmd0;
301 // store some values to be used inside of the handlers
302 beforeDispatchCursor_ = *this;
303 for (; depth(); pop(), boundary(false)) {
304 LYXERR(Debug::DEBUG, "Cursor::dispatch: cmd: "
305 << cmd0 << endl << *this);
306 LASSERT(pos() <= lastpos(), /**/);
307 LASSERT(idx() <= lastidx(), /**/);
308 LASSERT(pit() <= lastpit(), /**/);
310 // The common case is 'LFUN handled, need update', so make the
311 // LFUN handler's life easier by assuming this as default value.
312 // The handler can reset the update and val flags if necessary.
313 disp_.update(Update::FitCursor | Update::Force);
314 disp_.dispatched(true);
315 inset().dispatch(*this, cmd);
316 if (disp_.dispatched())
320 // it completely to get a 'bomb early' behaviour in case this
321 // object will be used again.
322 if (!disp_.dispatched()) {
323 LYXERR(Debug::DEBUG, "RESTORING OLD CURSOR!");
324 // We might have invalidated the cursor when removing an empty
325 // paragraph while the cursor could not be moved out the inset
326 // while we initially thought we could. This might happen when
327 // a multiline inset becomes an inline inset when the second
328 // paragraph is removed.
329 if (safe.pit() > safe.lastpit()) {
330 safe.pit() = safe.lastpit();
331 safe.pos() = safe.lastpos();
334 disp_.update(Update::None);
335 disp_.dispatched(false);
337 // restore the previous one because nested Cursor::dispatch calls
338 // are possible which would change it
339 beforeDispatchCursor_ = safe.beforeDispatchCursor_;
344 DispatchResult Cursor::result() const
350 BufferView & Cursor::bv() const
359 LASSERT(depth() >= 1, /**/);
364 void Cursor::push(Inset & p)
366 push_back(CursorSlice(p));
367 p.setBuffer(*buffer());
371 void Cursor::pushBackward(Inset & p)
373 LASSERT(!empty(), return);
374 //lyxerr << "Entering inset " << t << " front" << endl;
380 bool Cursor::popBackward()
382 LASSERT(!empty(), return false);
390 bool Cursor::popForward()
392 LASSERT(!empty(), return false);
393 //lyxerr << "Leaving inset from in back" << endl;
394 const pos_type lp = (depth() > 1) ? (*this)[depth() - 2].lastpos() : 0;
398 pos() += lastpos() - lp + 1;
403 int Cursor::currentMode()
405 LASSERT(!empty(), /**/);
406 for (int i = depth() - 1; i >= 0; --i) {
407 int res = operator[](i).inset().currentMode();
408 bool locked_mode = operator[](i).inset().lockedMode();
409 // Also return UNDECIDED_MODE when the mode is locked,
410 // as in this case it is treated the same as TEXT_MODE
411 if (res != Inset::UNDECIDED_MODE || locked_mode)
414 return Inset::TEXT_MODE;
418 void Cursor::getPos(int & x, int & y) const
420 Point p = bv().getPos(*this, boundary());
426 Row const & Cursor::textRow() const
428 CursorSlice const & cs = innerTextSlice();
429 ParagraphMetrics const & pm = bv().parMetrics(cs.text(), cs.pit());
430 LASSERT(!pm.rows().empty(), /**/);
431 return pm.getRow(pos(), boundary());
435 void Cursor::resetAnchor()
441 void Cursor::setCursorToAnchor()
448 bool Cursor::posBackward()
457 bool Cursor::posForward()
459 if (pos() == lastpos())
466 bool Cursor::posVisRight(bool skip_inset)
468 Cursor new_cur = *this; // where we will move to
469 pos_type left_pos; // position visually left of current cursor
470 pos_type right_pos; // position visually right of current cursor
471 bool new_pos_is_RTL; // is new position we're moving to RTL?
473 getSurroundingPos(left_pos, right_pos);
475 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
477 // Are we at an inset?
478 new_cur.pos() = right_pos;
479 new_cur.boundary(false);
481 text()->checkAndActivateInsetVisual(new_cur, right_pos >= pos(), false)) {
482 // we actually move the cursor at the end of this function, for now
483 // we just keep track of the new position in new_cur...
484 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
487 // Are we already at rightmost pos in row?
488 else if (text()->empty() || right_pos == -1) {
491 if (!new_cur.posVisToNewRow(false)) {
492 LYXERR(Debug::RTL, "not moving!");
496 // we actually move the cursor at the end of this function, for now
497 // just keep track of the new position in new_cur...
498 LYXERR(Debug::RTL, "right edge, moving: " << int(new_cur.pit()) << ","
499 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
502 // normal movement to the right
505 // Recall, if the cursor is at position 'x', that means *before*
506 // the character at position 'x'. In RTL, "before" means "to the
507 // right of", in LTR, "to the left of". So currently our situation
508 // is this: the position to our right is 'right_pos' (i.e., we're
509 // currently to the left of 'right_pos'). In order to move to the
510 // right, it depends whether or not the character at 'right_pos' is RTL.
511 new_pos_is_RTL = paragraph().getFontSettings(
512 buffer()->params(), right_pos).isVisibleRightToLeft();
513 // If the character at 'right_pos' *is* LTR, then in order to move to
514 // the right of it, we need to be *after* 'right_pos', i.e., move to
515 // position 'right_pos' + 1.
516 if (!new_pos_is_RTL) {
517 new_cur.pos() = right_pos + 1;
518 // set the boundary to true in two situations:
520 // 1. if new_pos is now lastpos, and we're in an RTL paragraph
521 // (this means that we're moving right to the end of an LTR chunk
522 // which is at the end of an RTL paragraph);
523 (new_cur.pos() == lastpos()
524 && paragraph().isRTL(buffer()->params()))
525 // 2. if the position *after* right_pos is RTL (we want to be
526 // *after* right_pos, not before right_pos + 1!)
527 || paragraph().getFontSettings(buffer()->params(),
528 new_cur.pos()).isVisibleRightToLeft()
530 new_cur.boundary(true);
531 else // set the boundary to false
532 new_cur.boundary(false);
534 // Otherwise (if the character at position 'right_pos' is RTL), then
535 // moving to the right of it is as easy as setting the new position
538 new_cur.pos() = right_pos;
539 new_cur.boundary(false);
544 bool moved = (new_cur.pos() != pos()
545 || new_cur.pit() != pit()
546 || new_cur.boundary() != boundary()
547 || &new_cur.inset() != &inset());
550 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
551 << (new_cur.boundary() ? " (boundary)" : ""));
559 bool Cursor::posVisLeft(bool skip_inset)
561 Cursor new_cur = *this; // where we will move to
562 pos_type left_pos; // position visually left of current cursor
563 pos_type right_pos; // position visually right of current cursor
564 bool new_pos_is_RTL; // is new position we're moving to RTL?
566 getSurroundingPos(left_pos, right_pos);
568 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
570 // Are we at an inset?
571 new_cur.pos() = left_pos;
572 new_cur.boundary(false);
574 text()->checkAndActivateInsetVisual(new_cur, left_pos >= pos(), true)) {
575 // we actually move the cursor at the end of this function, for now
576 // we just keep track of the new position in new_cur...
577 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
580 // Are we already at leftmost pos in row?
581 else if (text()->empty() || left_pos == -1) {
584 if (!new_cur.posVisToNewRow(true)) {
585 LYXERR(Debug::RTL, "not moving!");
589 // we actually move the cursor at the end of this function, for now
590 // just keep track of the new position in new_cur...
591 LYXERR(Debug::RTL, "left edge, moving: " << int(new_cur.pit()) << ","
592 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
595 // normal movement to the left
598 // Recall, if the cursor is at position 'x', that means *before*
599 // the character at position 'x'. In RTL, "before" means "to the
600 // right of", in LTR, "to the left of". So currently our situation
601 // is this: the position to our left is 'left_pos' (i.e., we're
602 // currently to the right of 'left_pos'). In order to move to the
603 // left, it depends whether or not the character at 'left_pos' is RTL.
604 new_pos_is_RTL = paragraph().getFontSettings(
605 buffer()->params(), left_pos).isVisibleRightToLeft();
606 // If the character at 'left_pos' *is* RTL, then in order to move to
607 // the left of it, we need to be *after* 'left_pos', i.e., move to
608 // position 'left_pos' + 1.
609 if (new_pos_is_RTL) {
610 new_cur.pos() = left_pos + 1;
611 // set the boundary to true in two situations:
613 // 1. if new_pos is now lastpos and we're in an LTR paragraph
614 // (this means that we're moving left to the end of an RTL chunk
615 // which is at the end of an LTR paragraph);
616 (new_cur.pos() == lastpos()
617 && !paragraph().isRTL(buffer()->params()))
618 // 2. if the position *after* left_pos is not RTL (we want to be
619 // *after* left_pos, not before left_pos + 1!)
620 || !paragraph().getFontSettings(buffer()->params(),
621 new_cur.pos()).isVisibleRightToLeft()
623 new_cur.boundary(true);
624 else // set the boundary to false
625 new_cur.boundary(false);
627 // Otherwise (if the character at position 'left_pos' is LTR), then
628 // moving to the left of it is as easy as setting the new position
631 new_cur.pos() = left_pos;
632 new_cur.boundary(false);
637 bool moved = (new_cur.pos() != pos()
638 || new_cur.pit() != pit()
639 || new_cur.boundary() != boundary());
642 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
643 << (new_cur.boundary() ? " (boundary)" : ""));
651 void Cursor::getSurroundingPos(pos_type & left_pos, pos_type & right_pos)
653 // preparing bidi tables
654 Paragraph const & par = paragraph();
655 Buffer const & buf = *buffer();
656 Row const & row = textRow();
658 bidi.computeTables(par, buf, row);
660 LYXERR(Debug::RTL, "bidi: " << row.pos() << "--" << row.endpos());
662 // The cursor is painted *before* the character at pos(), or, if 'boundary'
663 // is true, *after* the character at (pos() - 1). So we already have one
664 // known position around the cursor:
665 pos_type const known_pos = boundary() && pos() > 0 ? pos() - 1 : pos();
667 // edge case: if we're at the end of the paragraph, things are a little
668 // different (because lastpos is a position which does not really "exist"
669 // --- there's no character there yet).
670 if (known_pos == lastpos()) {
671 if (par.isRTL(buf.params())) {
673 right_pos = bidi.vis2log(row.pos());
677 left_pos = bidi.vis2log(row.endpos() - 1);
682 // Whether 'known_pos' is to the left or to the right of the cursor depends
683 // on whether it is an RTL or LTR character...
684 bool const cur_is_RTL =
685 par.getFontSettings(buf.params(), known_pos).isVisibleRightToLeft();
686 // ... in the following manner:
687 // For an RTL character, "before" means "to the right" and "after" means
688 // "to the left"; and for LTR, it's the reverse. So, 'known_pos' is to the
689 // right of the cursor if (RTL && boundary) or (!RTL && !boundary):
690 bool const known_pos_on_right = cur_is_RTL == boundary();
692 // So we now know one of the positions surrounding the cursor. Let's
693 // determine the other one:
694 if (known_pos_on_right) {
695 right_pos = known_pos;
696 // *visual* position of 'left_pos':
697 pos_type v_left_pos = bidi.log2vis(right_pos) - 1;
698 // If the position we just identified as 'left_pos' is a "skipped
699 // separator" (a separator which is at the logical end of a row,
700 // except for the last row in a paragraph; such separators are not
701 // painted, so they "are not really there"; note that in bidi text,
702 // such a separator could appear visually in the middle of a row),
703 // set 'left_pos' to the *next* position to the left.
704 if (bidi.inRange(v_left_pos)
705 && bidi.vis2log(v_left_pos) + 1 == row.endpos()
706 && row.endpos() < lastpos()
707 && par.isSeparator(bidi.vis2log(v_left_pos)))
710 // calculate the logical position of 'left_pos', if in row
711 if (!bidi.inRange(v_left_pos))
714 left_pos = bidi.vis2log(v_left_pos);
715 // If the position we identified as 'right_pos' is a "skipped
716 // separator", set 'right_pos' to the *next* position to the right.
717 if (right_pos + 1 == row.endpos() && row.endpos() < lastpos()
718 && par.isSeparator(right_pos)) {
719 pos_type const v_right_pos = bidi.log2vis(right_pos) + 1;
720 if (!bidi.inRange(v_right_pos))
723 right_pos = bidi.vis2log(v_right_pos);
726 // known_pos is on the left
727 left_pos = known_pos;
728 // *visual* position of 'right_pos'
729 pos_type v_right_pos = bidi.log2vis(left_pos) + 1;
730 // If the position we just identified as 'right_pos' is a "skipped
731 // separator", set 'right_pos' to the *next* position to the right.
732 if (bidi.inRange(v_right_pos)
733 && bidi.vis2log(v_right_pos) + 1 == row.endpos()
734 && row.endpos() < lastpos()
735 && par.isSeparator(bidi.vis2log(v_right_pos)))
738 // calculate the logical position of 'right_pos', if in row
739 if (!bidi.inRange(v_right_pos))
742 right_pos = bidi.vis2log(v_right_pos);
743 // If the position we identified as 'left_pos' is a "skipped
744 // separator", set 'left_pos' to the *next* position to the left.
745 if (left_pos + 1 == row.endpos() && row.endpos() < lastpos()
746 && par.isSeparator(left_pos)) {
747 pos_type const v_left_pos = bidi.log2vis(left_pos) - 1;
748 if (!bidi.inRange(v_left_pos))
751 left_pos = bidi.vis2log(v_left_pos);
758 bool Cursor::posVisToNewRow(bool movingLeft)
760 Paragraph const & par = paragraph();
761 Buffer const & buf = *buffer();
762 Row const & row = textRow();
763 bool par_is_LTR = !par.isRTL(buf.params());
765 // Inside a table, determining whether to move to the next or previous row
766 // should be done based on the table's direction.
768 if (s >= 1 && (*this)[s].inset().asInsetTabular()) {
769 par_is_LTR = !(*this)[s].inset().asInsetTabular()->isRightToLeft(*this);
770 LYXERR(Debug::RTL, "Inside table! par_is_LTR=" << (par_is_LTR ? 1 : 0));
773 // if moving left in an LTR paragraph or moving right in an RTL one,
774 // move to previous row
775 if (par_is_LTR == movingLeft) {
776 if (row.pos() == 0) { // we're at first row in paragraph
777 if (pit() == 0) // no previous paragraph! don't move
779 // move to last pos in previous par
783 } else { // move to previous row in this par
784 pos() = row.pos() - 1; // this is guaranteed to be in previous row
788 // if moving left in an RTL paragraph or moving right in an LTR one,
791 if (row.endpos() == lastpos()) { // we're at last row in paragraph
792 if (pit() == lastpit()) // last paragraph! don't move
794 // move to first row in next par
798 } else { // move to next row in this par
799 pos() = row.endpos();
804 // make sure we're at left-/right-most pos in new row
805 posVisToRowExtremity(!movingLeft);
811 void Cursor::posVisToRowExtremity(bool left)
813 // prepare bidi tables
814 Paragraph const & par = paragraph();
815 Buffer const & buf = *buffer();
816 Row const & row = textRow();
818 bidi.computeTables(par, buf, row);
820 LYXERR(Debug::RTL, "entering extremity: " << pit() << "," << pos() << ","
821 << (boundary() ? 1 : 0));
823 if (left) { // move to leftmost position
824 // if this is an RTL paragraph, and we're at the last row in the
825 // paragraph, move to lastpos
826 if (par.isRTL(buf.params()) && row.endpos() == lastpos())
829 pos() = bidi.vis2log(row.pos());
831 // Moving to the leftmost position in the row, the cursor should
832 // normally be placed to the *left* of the leftmost position.
833 // A very common exception, though, is if the leftmost character
834 // also happens to be the separator at the (logical) end of the row
835 // --- in this case, the separator is positioned beyond the left
836 // margin, and we don't want to move the cursor there (moving to
837 // the left of the separator is equivalent to moving to the next
838 // line). So, in this case we actually want to place the cursor
839 // to the *right* of the leftmost position (the separator).
840 // Another exception is if we're moving to the logically last
841 // position in the row, which is *not* a separator: this means
842 // that the entire row has no separators (if there were any, the
843 // row would have been broken there); and therefore in this case
844 // we also move to the *right* of the last position (this indicates
845 // to the user that there is no space after this position, and is
846 // consistent with the behavior in the middle of a row --- moving
847 // right or left moves to the next/previous character; if we were
848 // to move to the *left* of this position, that would simulate
849 // a separator which is not really there!).
850 // Finally, there is an exception to the previous exception: if
851 // this non-separator-but-last-position-in-row is an inset, then
852 // we *do* want to stay to the left of it anyway: this is the
853 // "boundary" which we simulate at insets.
854 // Another exception is when row.endpos() is 0.
856 // do we want to be to the right of pos?
857 // as explained above, if at last pos in row, stay to the right
858 bool const right_of_pos = row.endpos() > 0
859 && pos() == row.endpos() - 1 && !par.isInset(pos());
861 // Now we know if we want to be to the left or to the right of pos,
862 // let's make sure we are where we want to be.
863 bool const new_pos_is_RTL =
864 par.getFontSettings(buf.params(), pos()).isVisibleRightToLeft();
866 if (new_pos_is_RTL != right_of_pos) {
872 // move to rightmost position
873 // if this is an LTR paragraph, and we're at the last row in the
874 // paragraph, move to lastpos
875 if (!par.isRTL(buf.params()) && row.endpos() == lastpos())
878 pos() = row.endpos() > 0 ? bidi.vis2log(row.endpos() - 1) : 0;
880 // Moving to the rightmost position in the row, the cursor should
881 // normally be placed to the *right* of the rightmost position.
882 // A very common exception, though, is if the rightmost character
883 // also happens to be the separator at the (logical) end of the row
884 // --- in this case, the separator is positioned beyond the right
885 // margin, and we don't want to move the cursor there (moving to
886 // the right of the separator is equivalent to moving to the next
887 // line). So, in this case we actually want to place the cursor
888 // to the *left* of the rightmost position (the separator).
889 // Another exception is if we're moving to the logically last
890 // position in the row, which is *not* a separator: this means
891 // that the entire row has no separators (if there were any, the
892 // row would have been broken there); and therefore in this case
893 // we also move to the *left* of the last position (this indicates
894 // to the user that there is no space after this position, and is
895 // consistent with the behavior in the middle of a row --- moving
896 // right or left moves to the next/previous character; if we were
897 // to move to the *right* of this position, that would simulate
898 // a separator which is not really there!).
899 // Finally, there is an exception to the previous exception: if
900 // this non-separator-but-last-position-in-row is an inset, then
901 // we *do* want to stay to the right of it anyway: this is the
902 // "boundary" which we simulate at insets.
903 // Another exception is when row.endpos() is 0.
905 // do we want to be to the left of pos?
906 // as explained above, if at last pos in row, stay to the left,
907 // unless the last position is the same as the first.
908 bool const left_of_pos = row.endpos() > 0
909 && pos() == row.endpos() - 1 && !par.isInset(pos());
911 // Now we know if we want to be to the left or to the right of pos,
912 // let's make sure we are where we want to be.
913 bool const new_pos_is_RTL =
914 par.getFontSettings(buf.params(), pos()).isVisibleRightToLeft();
916 if (new_pos_is_RTL == left_of_pos) {
922 LYXERR(Debug::RTL, "leaving extremity: " << pit() << "," << pos() << ","
923 << (boundary() ? 1 : 0));
927 CursorSlice Cursor::anchor() const
931 LASSERT(anchor_.depth() >= depth(), /**/);
932 CursorSlice normal = anchor_[depth() - 1];
933 if (depth() < anchor_.depth() && top() <= normal) {
934 // anchor is behind cursor -> move anchor behind the inset
941 CursorSlice Cursor::selBegin() const
945 return anchor() < top() ? anchor() : top();
949 CursorSlice Cursor::selEnd() const
953 return anchor() > top() ? anchor() : top();
957 DocIterator Cursor::selectionBegin() const
963 // FIXME: This is a work-around for the problem that
964 // CursorSlice doesn't keep track of the boundary.
965 if (anchor() == top())
966 di = anchor_.boundary() > boundary() ? anchor_ : *this;
968 di = anchor() < top() ? anchor_ : *this;
974 DocIterator Cursor::selectionEnd() const
980 // FIXME: This is a work-around for the problem that
981 // CursorSlice doesn't keep track of the boundary.
982 if (anchor() == top())
983 di = anchor_.boundary() < boundary() ? anchor_ : *this;
985 di = anchor() > top() ? anchor_ : *this;
987 if (di.depth() > depth()) {
995 void Cursor::setSelection()
998 // A selection with no contents is not a selection
999 // FIXME: doesnt look ok
1000 if (idx() == anchor().idx() &&
1001 pit() == anchor().pit() &&
1002 pos() == anchor().pos())
1003 setSelection(false);
1007 void Cursor::setSelection(DocIterator const & where, int n)
1016 void Cursor::clearSelection()
1018 setSelection(false);
1024 void Cursor::setTargetX(int x)
1027 textTargetOffset_ = 0;
1031 int Cursor::x_target() const
1037 void Cursor::clearTargetX()
1040 textTargetOffset_ = 0;
1044 void Cursor::updateTextTargetOffset()
1049 textTargetOffset_ = x - x_target_;
1053 void Cursor::info(odocstream & os) const
1055 for (int i = 1, n = depth(); i < n; ++i) {
1056 operator[](i).inset().infoize(os);
1060 Inset const * inset = prevInset();
1061 // prevInset() can return 0 in certain case.
1063 prevInset()->infoize2(os);
1065 // overwite old message
1070 bool Cursor::selHandle(bool sel)
1072 //lyxerr << "Cursor::selHandle" << endl;
1075 if (sel == selection())
1079 cap::saveSelection(*this);
1087 ostream & operator<<(ostream & os, Cursor const & cur)
1089 os << "\n cursor: | anchor:\n";
1090 for (size_t i = 0, n = cur.depth(); i != n; ++i) {
1091 os << " " << cur[i] << " | ";
1092 if (i < cur.anchor_.depth())
1093 os << cur.anchor_[i];
1095 os << "-------------------------------";
1098 for (size_t i = cur.depth(), n = cur.anchor_.depth(); i < n; ++i) {
1099 os << "------------------------------- | " << cur.anchor_[i] << "\n";
1101 os << " selection: " << cur.selection_
1102 << " x_target: " << cur.x_target_ << endl;
1107 LyXErr & operator<<(LyXErr & os, Cursor const & cur)
1117 ///////////////////////////////////////////////////////////////////
1120 // The part below is the non-integrated rest of the original math
1121 // cursor. This should be either generalized for texted or moved
1122 // back to mathed (in most cases to InsetMathNest).
1124 ///////////////////////////////////////////////////////////////////
1126 #include "mathed/InsetMathChar.h"
1127 #include "mathed/InsetMathGrid.h"
1128 #include "mathed/InsetMathScript.h"
1129 #include "mathed/InsetMathUnknown.h"
1130 #include "mathed/MathFactory.h"
1131 #include "mathed/MathStream.h"
1132 #include "mathed/MathSupport.h"
1137 //#define FILEDEBUG 1
1140 bool Cursor::isInside(Inset const * p) const
1142 for (size_t i = 0; i != depth(); ++i)
1143 if (&operator[](i).inset() == p)
1149 void Cursor::leaveInset(Inset const & inset)
1151 for (size_t i = 0; i != depth(); ++i) {
1152 if (&operator[](i).inset() == &inset) {
1160 bool Cursor::openable(MathAtom const & t) const
1171 // we can't move into anything new during selection
1172 if (depth() >= anchor_.depth())
1174 if (t.nucleus() != &anchor_[depth()].inset())
1181 void Cursor::setScreenPos(int x, int /*y*/)
1184 //bruteFind(*this, x, y, 0, bv().workWidth(), 0, bv().workHeight());
1189 void Cursor::plainErase()
1191 cell().erase(pos());
1195 void Cursor::markInsert()
1197 insert(char_type(0));
1201 void Cursor::markErase()
1203 cell().erase(pos());
1207 void Cursor::plainInsert(MathAtom const & t)
1209 cell().insert(pos(), t);
1211 inset().setBuffer(bv_->buffer());
1216 void Cursor::insert(docstring const & str)
1218 for_each(str.begin(), str.end(),
1219 boost::bind(static_cast<void(Cursor::*)(char_type)>
1220 (&Cursor::insert), this, _1));
1224 void Cursor::insert(char_type c)
1226 //lyxerr << "Cursor::insert char '" << c << "'" << endl;
1227 LASSERT(!empty(), /**/);
1229 cap::selClearOrDel(*this);
1230 insert(new InsetMathChar(c));
1232 text()->insertChar(*this, c);
1237 void Cursor::insert(MathAtom const & t)
1239 //lyxerr << "Cursor::insert MathAtom '" << t << "'" << endl;
1241 cap::selClearOrDel(*this);
1246 void Cursor::insert(Inset * inset0)
1248 LASSERT(inset0, /**/);
1250 insert(MathAtom(inset0));
1252 text()->insertInset(*this, inset0);
1253 inset0->setBuffer(bv_->buffer());
1259 void Cursor::niceInsert(docstring const & t, Parse::flags f)
1270 void Cursor::niceInsert(MathAtom const & t)
1273 docstring const safe = cap::grabAndEraseSelection(*this);
1275 // enter the new inset and move the contents of the selection if possible
1276 if (t->isActive()) {
1278 // be careful here: don't use 'pushBackward(t)' as this we need to
1279 // push the clone, not the original
1280 pushBackward(*nextInset());
1281 // We may not use niceInsert here (recursion)
1289 void Cursor::insert(MathData const & ar)
1293 cap::eraseSelection(*this);
1294 cell().insert(pos(), ar);
1299 bool Cursor::backspace()
1301 autocorrect() = false;
1304 cap::eraseSelection(*this);
1309 // If empty cell, and not part of a big cell
1310 if (lastpos() == 0 && inset().nargs() == 1) {
1312 // Directly delete empty cell: [|[]] => [|]
1318 // [|], can not delete from inside
1329 if (inMacroMode()) {
1330 InsetMathUnknown * p = activeMacro();
1331 if (p->name().size() > 1) {
1332 p->setName(p->name().substr(0, p->name().size() - 1));
1337 if (pos() != 0 && prevAtom()->nargs() > 0) {
1338 // let's require two backspaces for 'big stuff' and
1339 // highlight on the first
1351 bool Cursor::erase()
1353 autocorrect() = false;
1358 cap::eraseSelection(*this);
1362 // delete empty cells if possible
1363 if (pos() == lastpos() && inset().idxDelete(idx()))
1366 // special behaviour when in last position of cell
1367 if (pos() == lastpos()) {
1368 bool one_cell = inset().nargs() == 1;
1369 if (one_cell && lastpos() == 0) {
1371 // Directly delete empty cell: [|[]] => [|]
1377 // [|], can not delete from inside
1382 inset().idxGlue(idx());
1386 // 'clever' UI hack: only erase large items if previously slected
1387 if (pos() != lastpos() && nextAtom()->nargs() > 0) {
1402 DocIterator save = *this;
1403 FuncRequest cmd(selection() ? LFUN_UP_SELECT : LFUN_UP, docstring());
1404 this->dispatch(cmd);
1405 if (disp_.dispatched())
1408 autocorrect() = false;
1416 DocIterator save = *this;
1417 FuncRequest cmd(selection() ? LFUN_DOWN_SELECT : LFUN_DOWN, docstring());
1418 this->dispatch(cmd);
1419 if (disp_.dispatched())
1422 autocorrect() = false;
1427 bool Cursor::macroModeClose()
1431 InsetMathUnknown * p = activeMacro();
1434 asArray(p->selection(), selection);
1435 docstring const s = p->name();
1437 cell().erase(pos());
1439 // do nothing if the macro name is empty
1443 // trigger updates of macros, at least, if no full
1444 // updates take place anyway
1445 updateFlags(Update::Force);
1447 docstring const name = s.substr(1);
1448 InsetMathNest * const in = inset().asInsetMath()->asNestInset();
1449 if (in && in->interpretString(*this, s))
1451 MathAtom atom = createInsetMath(name);
1453 // try to put argument into macro, if we just inserted a macro
1454 bool macroArg = false;
1455 MathMacro * atomAsMacro = atom.nucleus()->asMacro();
1457 // macros here are still unfolded (in init mode in fact). So
1458 // we have to resolve the macro here manually and check its arity
1459 // to put the selection behind it if arity > 0.
1460 MacroData const * data = buffer()->getMacro(atomAsMacro->name());
1461 if (selection.size() > 0 && data && data->numargs() - data->optionals() > 0) {
1463 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 1);
1465 // non-greedy case. Do not touch the arguments behind
1466 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 0);
1469 // insert remembered selection into first argument of a non-macro
1470 else if (atom.nucleus()->nargs() > 0)
1471 atom.nucleus()->cell(0).append(selection);
1475 // finally put the macro argument behind, if needed
1477 if (selection.size() > 1)
1478 plainInsert(MathAtom(new InsetMathBrace(selection)));
1487 docstring Cursor::macroName()
1489 return inMacroMode() ? activeMacro()->name() : docstring();
1493 void Cursor::handleNest(MathAtom const & a, int c)
1495 //lyxerr << "Cursor::handleNest: " << c << endl;
1497 asArray(cap::grabAndEraseSelection(*this), t.nucleus()->cell(c));
1500 pushBackward(*nextInset());
1504 int Cursor::targetX() const
1506 if (x_target() != -1)
1515 int Cursor::textTargetOffset() const
1517 return textTargetOffset_;
1521 void Cursor::setTargetX()
1530 bool Cursor::inMacroMode() const
1536 InsetMathUnknown const * p = prevAtom()->asUnknownInset();
1537 return p && !p->final();
1541 InsetMathUnknown * Cursor::activeMacro()
1543 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1547 InsetMathUnknown const * Cursor::activeMacro() const
1549 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1553 void Cursor::pullArg()
1556 MathData ar = cell();
1557 if (popBackward() && inMathed()) {
1559 cell().insert(pos(), ar);
1562 //formula()->mutateToText();
1567 void Cursor::touch()
1571 DocIterator::const_iterator it = begin();
1572 DocIterator::const_iterator et = end();
1573 for ( ; it != et; ++it)
1579 void Cursor::normalize()
1581 if (idx() > lastidx()) {
1582 lyxerr << "this should not really happen - 1: "
1583 << idx() << ' ' << nargs()
1584 << " in: " << &inset() << endl;
1588 if (pos() > lastpos()) {
1589 lyxerr << "this should not really happen - 2: "
1590 << pos() << ' ' << lastpos() << " in idx: " << idx()
1592 odocstringstream os;
1593 WriteStream wi(os, false, true, false);
1594 inset().asInsetMath()->write(wi);
1595 lyxerr << to_utf8(os.str()) << endl;
1601 bool Cursor::upDownInMath(bool up)
1603 // Be warned: The 'logic' implemented in this function is highly
1604 // fragile. A distance of one pixel or a '<' vs '<=' _really
1605 // matters. So fiddle around with it only if you think you know
1606 // what you are doing!
1610 xo = theLyXFunc().cursorBeforeDispatchX();
1612 // check if we had something else in mind, if not, this is the future
1614 if (x_target_ == -1)
1616 else if (inset().asInsetText() && xo - textTargetOffset() != x_target()) {
1617 // In text mode inside the line (not left or right) possibly set a new target_x,
1618 // but only if we are somewhere else than the previous target-offset.
1620 // We want to keep the x-target on subsequent up/down movements
1621 // that cross beyond the end of short lines. Thus a special
1622 // handling when the cursor is at the end of line: Use the new
1623 // x-target only if the old one was before the end of line
1624 // or the old one was after the beginning of the line
1625 bool inRTL = isWithinRtlParagraph(*this);
1629 left = pos() == textRow().endpos();
1630 right = pos() == textRow().pos();
1632 left = pos() == textRow().pos();
1633 right = pos() == textRow().endpos();
1635 if ((!left && !right) ||
1636 (left && !right && xo < x_target_) ||
1637 (!left && right && x_target_ < xo))
1644 // try neigbouring script insets
1646 if (inMathed() && !selection()) {
1649 InsetMathScript const * p = prevAtom()->asScriptInset();
1650 if (p && p->has(up)) {
1652 push(*const_cast<InsetMathScript*>(p));
1653 idx() = p->idxOfScript(up);
1656 // we went in the right direction? Otherwise don't jump into the script
1660 int oy = theLyXFunc().cursorBeforeDispatchY();
1661 if ((!up && y <= oy) ||
1670 if (pos() != lastpos()) {
1671 InsetMathScript const * p = nextAtom()->asScriptInset();
1672 if (p && p->has(up)) {
1673 push(*const_cast<InsetMathScript*>(p));
1674 idx() = p->idxOfScript(up);
1677 // we went in the right direction? Otherwise don't jump into the script
1681 int oy = theLyXFunc().cursorBeforeDispatchY();
1682 if ((!up && y <= oy) ||
1691 // try to find an inset that knows better then we,
1692 if (inset().idxUpDown(*this, up)) {
1693 //lyxerr << "idxUpDown triggered" << endl;
1694 // try to find best position within this inset
1696 setCursor(bruteFind2(*this, xo, yo));
1700 // any improvement going just out of inset?
1701 if (popBackward() && inMathed()) {
1702 //lyxerr << "updown: popBackward succeeded" << endl;
1705 int yold = theLyXFunc().cursorBeforeDispatchY();
1707 if (up ? ynew < yold : ynew > yold)
1711 // no success, we are probably at the document top or bottom
1717 bool Cursor::atFirstOrLastRow(bool up)
1719 TextMetrics const & tm = bv_->textMetrics(text());
1720 ParagraphMetrics const & pm = tm.parMetrics(pit());
1723 if (pos() && boundary())
1724 row = pm.pos2row(pos() - 1);
1726 row = pm.pos2row(pos());
1729 if (pit() == 0 && row == 0)
1732 if (pit() + 1 >= int(text()->paragraphs().size()) &&
1733 row + 1 >= int(pm.rows().size()))
1739 bool Cursor::upDownInText(bool up, bool & updateNeeded)
1741 LASSERT(text(), /**/);
1747 xo = theLyXFunc().cursorBeforeDispatchX();
1749 // update the targetX - this is here before the "return false"
1750 // to set a new target which can be used by InsetTexts above
1751 // if we cannot move up/down inside this inset anymore
1752 if (x_target_ == -1)
1754 else if (xo - textTargetOffset() != x_target() &&
1755 depth() == beforeDispatchCursor_.depth()) {
1756 // In text mode inside the line (not left or right) possibly set a new target_x,
1757 // but only if we are somewhere else than the previous target-offset.
1759 // We want to keep the x-target on subsequent up/down movements
1760 // that cross beyond the end of short lines. Thus a special
1761 // handling when the cursor is at the end of line: Use the new
1762 // x-target only if the old one was before the end of line
1763 // or the old one was after the beginning of the line
1764 bool inRTL = isWithinRtlParagraph(*this);
1768 left = pos() == textRow().endpos();
1769 right = pos() == textRow().pos();
1771 left = pos() == textRow().pos();
1772 right = pos() == textRow().endpos();
1774 if ((!left && !right) ||
1775 (left && !right && xo < x_target_) ||
1776 (!left && right && x_target_ < xo))
1783 // first get the current line
1784 TextMetrics & tm = bv_->textMetrics(text());
1785 ParagraphMetrics const & pm = tm.parMetrics(pit());
1787 if (pos() && boundary())
1788 row = pm.pos2row(pos() - 1);
1790 row = pm.pos2row(pos());
1792 if (atFirstOrLastRow(up)) {
1793 // Is there a place for the cursor to go ? If yes, we
1794 // can execute the DEPM, otherwise we should keep the
1795 // paragraph to host the cursor.
1796 Cursor dummy = *this;
1797 bool valid_destination = false;
1798 for(; dummy.depth(); dummy.pop())
1799 if (!dummy.atFirstOrLastRow(up)) {
1800 valid_destination = true;
1804 // will a next dispatch follow and if there is a new
1805 // dispatch will it move the cursor out ?
1806 if (depth() > 1 && valid_destination) {
1807 // The cursor hasn't changed yet. This happens when
1808 // you e.g. move out of an inset. And to give the
1809 // DEPM the possibility of doing something we must
1810 // provide it with two different cursors. (Lgb, vfr)
1812 dummy.pos() = dummy.pos() == 0 ? dummy.lastpos() : 0;
1813 dummy.pit() = dummy.pit() == 0 ? dummy.lastpit() : 0;
1815 updateNeeded |= bv().checkDepm(dummy, *this);
1816 updateTextTargetOffset();
1821 // with and without selection are handled differently
1823 int yo = bv().getPos(*this, boundary()).y_;
1825 // To next/previous row
1827 tm.editXY(*this, xo, yo - textRow().ascent() - 1);
1829 tm.editXY(*this, xo, yo + textRow().descent() + 1);
1832 // This happens when you move out of an inset.
1833 // And to give the DEPM the possibility of doing
1834 // something we must provide it with two different
1836 Cursor dummy = *this;
1839 if (bv().checkDepm(dummy, old)) {
1840 updateNeeded = true;
1841 // Make sure that cur gets back whatever happened to dummy(Lgb)
1845 // if there is a selection, we stay out of any inset, and just jump to the right position:
1849 top().pos() = min(tm.x2pos(pit(), row - 1, xo), top().lastpos());
1850 } else if (pit() > 0) {
1852 TextMetrics & tm = bv_->textMetrics(text());
1853 if (!tm.contains(pit()))
1854 tm.newParMetricsUp();
1855 ParagraphMetrics const & pmcur = tm.parMetrics(pit());
1856 top().pos() = min(tm.x2pos(pit(), pmcur.rows().size() - 1, xo), top().lastpos());
1859 if (row + 1 < int(pm.rows().size())) {
1860 top().pos() = min(tm.x2pos(pit(), row + 1, xo), top().lastpos());
1861 } else if (pit() + 1 < int(text()->paragraphs().size())) {
1863 TextMetrics & tm = bv_->textMetrics(text());
1864 if (!tm.contains(pit()))
1865 tm.newParMetricsDown();
1866 top().pos() = min(tm.x2pos(pit(), 0, xo), top().lastpos());
1870 updateNeeded |= bv().checkDepm(*this, old);
1873 updateTextTargetOffset();
1878 void Cursor::handleFont(string const & font)
1880 LYXERR(Debug::DEBUG, font);
1884 safe = cap::grabAndEraseSelection(*this);
1889 if (lastpos() != 0) {
1890 // something left in the cell
1892 // cursor in first position
1894 } else if (pos() == lastpos()) {
1895 // cursor in last position
1898 // cursor in between. split cell
1899 MathData::iterator bt = cell().begin();
1900 MathAtom at = createInsetMath(from_utf8(font));
1901 at.nucleus()->cell(0) = MathData(bt, bt + pos());
1902 cell().erase(bt, bt + pos());
1907 // nothing left in the cell
1916 void Cursor::message(docstring const & msg) const
1918 theLyXFunc().setMessage(msg);
1922 void Cursor::errorMessage(docstring const & msg) const
1924 theLyXFunc().setErrorMessage(msg);
1928 docstring Cursor::selectionAsString(bool with_label) const
1933 int const label = with_label
1934 ? AS_STR_LABEL | AS_STR_INSETS : AS_STR_INSETS;
1937 idx_type const startidx = selBegin().idx();
1938 idx_type const endidx = selEnd().idx();
1939 if (startidx != endidx) {
1940 // multicell selection
1941 InsetTabular * table = inset().asInsetTabular();
1942 LASSERT(table, return docstring());
1943 return table->asString(startidx, endidx);
1946 ParagraphList const & pars = text()->paragraphs();
1948 pit_type const startpit = selBegin().pit();
1949 pit_type const endpit = selEnd().pit();
1950 size_t const startpos = selBegin().pos();
1951 size_t const endpos = selEnd().pos();
1953 if (startpit == endpit)
1954 return pars[startpit].asString(startpos, endpos, label);
1956 // First paragraph in selection
1957 docstring result = pars[startpit].
1958 asString(startpos, pars[startpit].size(), label)
1959 + parbreak(pars[startpit]);
1961 // The paragraphs in between (if any)
1962 for (pit_type pit = startpit + 1; pit != endpit; ++pit) {
1963 Paragraph const & par = pars[pit];
1964 result += par.asString(0, par.size(), label)
1965 + parbreak(pars[pit]);
1968 // Last paragraph in selection
1969 result += pars[endpit].asString(0, endpos, label);
1975 return cap::grabSelection(*this);
1981 docstring Cursor::currentState() const
1984 odocstringstream os;
1990 return text()->currentState(*this);
1996 docstring Cursor::getPossibleLabel() const
1998 return inMathed() ? from_ascii("eq:") : text()->getPossibleLabel(*this);
2002 Encoding const * Cursor::getEncoding() const
2006 CursorSlice const & sl = innerTextSlice();
2007 Text const & text = *sl.text();
2008 Font font = text.getPar(sl.pit()).getFont(
2009 bv().buffer().params(), sl.pos(), outerFont(sl.pit(), text.paragraphs()));
2010 return font.language()->encoding();
2014 void Cursor::undispatched()
2016 disp_.dispatched(false);
2020 void Cursor::dispatched()
2022 disp_.dispatched(true);
2026 void Cursor::updateFlags(Update::flags f)
2032 void Cursor::noUpdate()
2034 disp_.update(Update::None);
2038 Font Cursor::getFont() const
2040 // The logic here should more or less match to the Cursor::setCurrentFont
2041 // logic, i.e. the cursor height should give a hint what will happen
2042 // if a character is entered.
2044 // HACK. far from being perfect...
2046 CursorSlice const & sl = innerTextSlice();
2047 Text const & text = *sl.text();
2048 Paragraph const & par = text.getPar(sl.pit());
2050 // on boundary, so we are really at the character before
2051 pos_type pos = sl.pos();
2052 if (pos > 0 && boundary())
2055 // on space? Take the font before (only for RTL boundary stay)
2057 TextMetrics const & tm = bv().textMetrics(&text);
2058 if (pos == sl.lastpos()
2059 || (par.isSeparator(pos)
2060 && !tm.isRTLBoundary(sl.pit(), pos)))
2064 // get font at the position
2065 Font font = par.getFont(buffer()->params(), pos,
2066 outerFont(sl.pit(), text.paragraphs()));
2072 bool Cursor::fixIfBroken()
2074 if (DocIterator::fixIfBroken()) {
2082 bool notifyCursorLeavesOrEnters(Cursor const & old, Cursor & cur)
2084 // find inset in common
2086 for (i = 0; i < old.depth() && i < cur.depth(); ++i) {
2087 if (&old[i].inset() != &cur[i].inset())
2091 // update words if we just moved to another paragraph
2092 if (i == old.depth() && i == cur.depth()
2093 && !cur.buffer()->isClean()
2094 && cur.inTexted() && old.inTexted()
2095 && cur.pit() != old.pit()) {
2096 old.paragraph().updateWords();
2099 // notify everything on top of the common part in old cursor,
2100 // but stop if the inset claims the cursor to be invalid now
2101 for (size_type j = i; j < old.depth(); ++j) {
2102 Cursor insetPos = old;
2104 if (old[j].inset().notifyCursorLeaves(insetPos, cur))
2108 // notify everything on top of the common part in new cursor,
2109 // but stop if the inset claims the cursor to be invalid now
2110 for (; i < cur.depth(); ++i) {
2111 if (cur[i].inset().notifyCursorEnters(cur))
2119 void Cursor::setCurrentFont()
2121 CursorSlice const & cs = innerTextSlice();
2122 Paragraph const & par = cs.paragraph();
2123 pos_type cpit = cs.pit();
2124 pos_type cpos = cs.pos();
2125 Text const & ctext = *cs.text();
2126 TextMetrics const & tm = bv().textMetrics(&ctext);
2128 // are we behind previous char in fact? -> go to that char
2129 if (cpos > 0 && boundary())
2132 // find position to take the font from
2134 // paragraph end? -> font of last char
2135 if (cpos == lastpos())
2137 // on space? -> look at the words in front of space
2138 else if (cpos > 0 && par.isSeparator(cpos)) {
2139 // abc| def -> font of c
2140 // abc |[WERBEH], i.e. boundary==true -> font of c
2141 // abc [WERBEH]| def, font of the space
2142 if (!tm.isRTLBoundary(cpit, cpos))
2148 BufferParams const & bufparams = buffer()->params();
2149 current_font = par.getFontSettings(bufparams, cpos);
2150 real_current_font = tm.displayFont(cpit, cpos);
2152 // special case for paragraph end
2153 if (cs.pos() == lastpos()
2154 && tm.isRTLBoundary(cpit, cs.pos())
2156 Language const * lang = par.getParLanguage(bufparams);
2157 current_font.setLanguage(lang);
2158 current_font.fontInfo().setNumber(FONT_OFF);
2159 real_current_font.setLanguage(lang);
2160 real_current_font.fontInfo().setNumber(FONT_OFF);
2165 bool Cursor::textUndo()
2167 DocIterator dit = *this;
2168 // Undo::textUndo() will modify dit.
2169 if (!buffer()->undo().textUndo(dit))
2179 bool Cursor::textRedo()
2181 DocIterator dit = *this;
2182 // Undo::textRedo() will modify dit.
2183 if (!buffer()->undo().textRedo(dit))
2193 void Cursor::finishUndo() const
2195 buffer()->undo().finishUndo();
2199 void Cursor::beginUndoGroup() const
2201 buffer()->undo().beginUndoGroup();
2205 void Cursor::endUndoGroup() const
2207 buffer()->undo().endUndoGroup();
2211 void Cursor::recordUndo(UndoKind kind, pit_type from, pit_type to) const
2213 buffer()->undo().recordUndo(*this, kind, from, to);
2217 void Cursor::recordUndo(UndoKind kind, pit_type from) const
2219 buffer()->undo().recordUndo(*this, kind, from);
2223 void Cursor::recordUndo(UndoKind kind) const
2225 buffer()->undo().recordUndo(*this, kind);
2229 void Cursor::recordUndoInset(UndoKind kind) const
2231 buffer()->undo().recordUndoInset(*this, kind);
2235 void Cursor::recordUndoFullDocument() const
2237 buffer()->undo().recordUndoFullDocument(*this);
2241 void Cursor::recordUndoSelection() const
2244 if (cap::multipleCellsSelected(*this))
2249 buffer()->undo().recordUndo(*this, ATOMIC_UNDO,
2250 selBegin().pit(), selEnd().pit());
2255 void Cursor::checkBufferStructure()
2257 Buffer const * master = buffer()->masterBuffer();
2258 master->tocBackend().updateItem(*this);
2259 if (master != buffer() && !master->hasGuiDelegate())
2260 // In case the master has no gui associated with it,
2261 // the TocItem is not updated (part of bug 5699).
2262 buffer()->tocBackend().updateItem(*this);