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);
252 // be careful: this is called from the bv's constructor, too, so
253 // bv functions are not yet available!
254 Cursor::Cursor(BufferView & bv)
255 : DocIterator(&bv.buffer()), bv_(&bv), anchor_(),
256 x_target_(-1), textTargetOffset_(0),
257 selection_(false), mark_(false), logicalpos_(false),
258 current_font(inherit_font)
262 void Cursor::reset(Inset & inset)
265 push_back(CursorSlice(inset));
266 anchor_ = doc_iterator_begin(&inset.buffer(), &inset);
274 // this (intentionally) does neither touch anchor nor selection status
275 void Cursor::setCursor(DocIterator const & cur)
277 DocIterator::operator=(cur);
281 void Cursor::dispatch(FuncRequest const & cmd0)
283 LYXERR(Debug::DEBUG, "cmd: " << cmd0 << '\n' << *this);
288 FuncRequest cmd = cmd0;
291 // store some values to be used inside of the handlers
292 beforeDispatchCursor_ = *this;
293 for (; depth(); pop(), boundary(false)) {
294 LYXERR(Debug::DEBUG, "Cursor::dispatch: cmd: "
295 << cmd0 << endl << *this);
296 LASSERT(pos() <= lastpos(), /**/);
297 LASSERT(idx() <= lastidx(), /**/);
298 LASSERT(pit() <= lastpit(), /**/);
300 // The common case is 'LFUN handled, need update', so make the
301 // LFUN handler's life easier by assuming this as default value.
302 // The handler can reset the update and val flags if necessary.
303 disp_.update(Update::FitCursor | Update::Force);
304 disp_.dispatched(true);
305 inset().dispatch(*this, cmd);
306 if (disp_.dispatched())
310 // it completely to get a 'bomb early' behaviour in case this
311 // object will be used again.
312 if (!disp_.dispatched()) {
313 LYXERR(Debug::DEBUG, "RESTORING OLD CURSOR!");
314 // We might have invalidated the cursor when removing an empty
315 // paragraph while the cursor could not be moved out the inset
316 // while we initially thought we could. This might happen when
317 // a multiline inset becomes an inline inset when the second
318 // paragraph is removed.
319 if (safe.pit() > safe.lastpit()) {
320 safe.pit() = safe.lastpit();
321 safe.pos() = safe.lastpos();
324 disp_.update(Update::None);
325 disp_.dispatched(false);
327 // restore the previous one because nested Cursor::dispatch calls
328 // are possible which would change it
329 beforeDispatchCursor_ = safe.beforeDispatchCursor_;
334 DispatchResult Cursor::result() const
340 BufferView & Cursor::bv() const
349 LASSERT(depth() >= 1, /**/);
354 void Cursor::push(Inset & p)
356 push_back(CursorSlice(p));
357 p.setBuffer(*buffer());
361 void Cursor::pushBackward(Inset & p)
363 LASSERT(!empty(), return);
364 //lyxerr << "Entering inset " << t << " front" << endl;
370 bool Cursor::popBackward()
372 LASSERT(!empty(), return false);
380 bool Cursor::popForward()
382 LASSERT(!empty(), return false);
383 //lyxerr << "Leaving inset from in back" << endl;
384 const pos_type lp = (depth() > 1) ? (*this)[depth() - 2].lastpos() : 0;
388 pos() += lastpos() - lp + 1;
393 int Cursor::currentMode()
395 LASSERT(!empty(), /**/);
396 for (int i = depth() - 1; i >= 0; --i) {
397 int res = operator[](i).inset().currentMode();
398 bool locked_mode = operator[](i).inset().lockedMode();
399 // Also return UNDECIDED_MODE when the mode is locked,
400 // as in this case it is treated the same as TEXT_MODE
401 if (res != Inset::UNDECIDED_MODE || locked_mode)
404 return Inset::TEXT_MODE;
408 void Cursor::getPos(int & x, int & y) const
410 Point p = bv().getPos(*this, boundary());
416 Row const & Cursor::textRow() const
418 CursorSlice const & cs = innerTextSlice();
419 ParagraphMetrics const & pm = bv().parMetrics(cs.text(), cs.pit());
420 LASSERT(!pm.rows().empty(), /**/);
421 return pm.getRow(pos(), boundary());
425 void Cursor::resetAnchor()
431 void Cursor::setCursorToAnchor()
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 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(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()
537 || &new_cur.inset() != &inset());
540 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
541 << (new_cur.boundary() ? " (boundary)" : ""));
549 bool Cursor::posVisLeft(bool skip_inset)
551 Cursor new_cur = *this; // where we will move to
552 pos_type left_pos; // position visually left of current cursor
553 pos_type right_pos; // position visually right of current cursor
554 bool new_pos_is_RTL; // is new position we're moving to RTL?
556 getSurroundingPos(left_pos, right_pos);
558 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<< pos() <<")");
560 // Are we at an inset?
561 new_cur.pos() = left_pos;
562 new_cur.boundary(false);
564 text()->checkAndActivateInsetVisual(new_cur, left_pos >= pos(), true)) {
565 // we actually move the cursor at the end of this function, for now
566 // we just keep track of the new position in new_cur...
567 LYXERR(Debug::RTL, "entering inset at: " << new_cur.pos());
570 // Are we already at leftmost pos in row?
571 else if (text()->empty() || left_pos == -1) {
574 if (!new_cur.posVisToNewRow(true)) {
575 LYXERR(Debug::RTL, "not moving!");
579 // we actually move the cursor at the end of this function, for now
580 // just keep track of the new position in new_cur...
581 LYXERR(Debug::RTL, "left edge, moving: " << int(new_cur.pit()) << ","
582 << int(new_cur.pos()) << "," << (new_cur.boundary() ? 1 : 0));
585 // normal movement to the left
588 // Recall, if the cursor is at position 'x', that means *before*
589 // the character at position 'x'. In RTL, "before" means "to the
590 // right of", in LTR, "to the left of". So currently our situation
591 // is this: the position to our left is 'left_pos' (i.e., we're
592 // currently to the right of 'left_pos'). In order to move to the
593 // left, it depends whether or not the character at 'left_pos' is RTL.
594 new_pos_is_RTL = paragraph().getFontSettings(
595 buffer()->params(), left_pos).isVisibleRightToLeft();
596 // If the character at 'left_pos' *is* RTL, then in order to move to
597 // the left of it, we need to be *after* 'left_pos', i.e., move to
598 // position 'left_pos' + 1.
599 if (new_pos_is_RTL) {
600 new_cur.pos() = left_pos + 1;
601 // set the boundary to true in two situations:
603 // 1. if new_pos is now lastpos and we're in an LTR paragraph
604 // (this means that we're moving left to the end of an RTL chunk
605 // which is at the end of an LTR paragraph);
606 (new_cur.pos() == lastpos()
607 && !paragraph().isRTL(buffer()->params()))
608 // 2. if the position *after* left_pos is not RTL (we want to be
609 // *after* left_pos, not before left_pos + 1!)
610 || !paragraph().getFontSettings(buffer()->params(),
611 new_cur.pos()).isVisibleRightToLeft()
613 new_cur.boundary(true);
614 else // set the boundary to false
615 new_cur.boundary(false);
617 // Otherwise (if the character at position 'left_pos' is LTR), then
618 // moving to the left of it is as easy as setting the new position
621 new_cur.pos() = left_pos;
622 new_cur.boundary(false);
627 bool moved = (new_cur.pos() != pos()
628 || new_cur.pit() != pit()
629 || new_cur.boundary() != boundary());
632 LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
633 << (new_cur.boundary() ? " (boundary)" : ""));
641 void Cursor::getSurroundingPos(pos_type & left_pos, pos_type & right_pos)
643 // preparing bidi tables
644 Paragraph const & par = paragraph();
645 Buffer const & buf = *buffer();
646 Row const & row = textRow();
648 bidi.computeTables(par, buf, row);
650 LYXERR(Debug::RTL, "bidi: " << row.pos() << "--" << row.endpos());
652 // The cursor is painted *before* the character at pos(), or, if 'boundary'
653 // is true, *after* the character at (pos() - 1). So we already have one
654 // known position around the cursor:
655 pos_type const known_pos = boundary() && pos() > 0 ? pos() - 1 : pos();
657 // edge case: if we're at the end of the paragraph, things are a little
658 // different (because lastpos is a position which does not really "exist"
659 // --- there's no character there yet).
660 if (known_pos == lastpos()) {
661 if (par.isRTL(buf.params())) {
663 right_pos = bidi.vis2log(row.pos());
667 left_pos = bidi.vis2log(row.endpos() - 1);
672 // Whether 'known_pos' is to the left or to the right of the cursor depends
673 // on whether it is an RTL or LTR character...
674 bool const cur_is_RTL =
675 par.getFontSettings(buf.params(), known_pos).isVisibleRightToLeft();
676 // ... in the following manner:
677 // For an RTL character, "before" means "to the right" and "after" means
678 // "to the left"; and for LTR, it's the reverse. So, 'known_pos' is to the
679 // right of the cursor if (RTL && boundary) or (!RTL && !boundary):
680 bool const known_pos_on_right = cur_is_RTL == boundary();
682 // So we now know one of the positions surrounding the cursor. Let's
683 // 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 const v_right_pos = bidi.log2vis(right_pos) + 1;
710 if (!bidi.inRange(v_right_pos))
713 right_pos = bidi.vis2log(v_right_pos);
716 // 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 const 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.
844 // Another exception is when row.endpos() is 0.
846 // 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 bool const right_of_pos = row.endpos() > 0
849 && 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 const new_pos_is_RTL =
854 par.getFontSettings(buf.params(), pos()).isVisibleRightToLeft();
856 if (new_pos_is_RTL != right_of_pos) {
862 // move to rightmost position
863 // if this is an LTR paragraph, and we're at the last row in the
864 // paragraph, move to lastpos
865 if (!par.isRTL(buf.params()) && row.endpos() == lastpos())
868 pos() = row.endpos() > 0 ? bidi.vis2log(row.endpos() - 1) : 0;
870 // Moving to the rightmost position in the row, the cursor should
871 // normally be placed to the *right* of the rightmost position.
872 // A very common exception, though, is if the rightmost character
873 // also happens to be the separator at the (logical) end of the row
874 // --- in this case, the separator is positioned beyond the right
875 // margin, and we don't want to move the cursor there (moving to
876 // the right of the separator is equivalent to moving to the next
877 // line). So, in this case we actually want to place the cursor
878 // to the *left* of the rightmost position (the separator).
879 // Another exception is if we're moving to the logically last
880 // position in the row, which is *not* a separator: this means
881 // that the entire row has no separators (if there were any, the
882 // row would have been broken there); and therefore in this case
883 // we also move to the *left* of the last position (this indicates
884 // to the user that there is no space after this position, and is
885 // consistent with the behavior in the middle of a row --- moving
886 // right or left moves to the next/previous character; if we were
887 // to move to the *right* of this position, that would simulate
888 // a separator which is not really there!).
889 // Finally, there is an exception to the previous exception: if
890 // this non-separator-but-last-position-in-row is an inset, then
891 // we *do* want to stay to the right of it anyway: this is the
892 // "boundary" which we simulate at insets.
893 // Another exception is when row.endpos() is 0.
895 // do we want to be to the left of pos?
896 // as explained above, if at last pos in row, stay to the left,
897 // unless the last position is the same as the first.
898 bool const left_of_pos = row.endpos() > 0
899 && 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 const 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
921 LASSERT(anchor_.depth() >= depth(), /**/);
922 CursorSlice normal = anchor_[depth() - 1];
923 if (depth() < anchor_.depth() && top() <= normal) {
924 // anchor is behind cursor -> move anchor behind the inset
931 CursorSlice Cursor::selBegin() const
935 return anchor() < top() ? anchor() : top();
939 CursorSlice Cursor::selEnd() const
943 return anchor() > top() ? anchor() : top();
947 DocIterator Cursor::selectionBegin() const
953 // FIXME: This is a work-around for the problem that
954 // CursorSlice doesn't keep track of the boundary.
955 if (anchor() == top())
956 di = anchor_.boundary() > boundary() ? anchor_ : *this;
958 di = anchor() < top() ? anchor_ : *this;
964 DocIterator Cursor::selectionEnd() const
970 // FIXME: This is a work-around for the problem that
971 // CursorSlice doesn't keep track of the boundary.
972 if (anchor() == top())
973 di = anchor_.boundary() < boundary() ? anchor_ : *this;
975 di = anchor() > top() ? anchor_ : *this;
977 if (di.depth() > depth()) {
985 void Cursor::setSelection()
988 // A selection with no contents is not a selection
989 // FIXME: doesnt look ok
990 if (idx() == anchor().idx() &&
991 pit() == anchor().pit() &&
992 pos() == anchor().pos())
997 void Cursor::setSelection(DocIterator const & where, int n)
1006 void Cursor::clearSelection()
1008 setSelection(false);
1014 void Cursor::setTargetX(int x)
1017 textTargetOffset_ = 0;
1021 int Cursor::x_target() const
1027 void Cursor::clearTargetX()
1030 textTargetOffset_ = 0;
1034 void Cursor::updateTextTargetOffset()
1039 textTargetOffset_ = x - x_target_;
1043 void Cursor::info(odocstream & os) const
1045 for (int i = 1, n = depth(); i < n; ++i) {
1046 operator[](i).inset().infoize(os);
1050 Inset const * inset = prevInset();
1051 // prevInset() can return 0 in certain case.
1053 prevInset()->infoize2(os);
1055 // overwite old message
1060 bool Cursor::selHandle(bool sel)
1062 //lyxerr << "Cursor::selHandle" << endl;
1065 if (sel == selection())
1069 cap::saveSelection(*this);
1077 ostream & operator<<(ostream & os, Cursor const & cur)
1079 os << "\n cursor: | anchor:\n";
1080 for (size_t i = 0, n = cur.depth(); i != n; ++i) {
1081 os << " " << cur[i] << " | ";
1082 if (i < cur.anchor_.depth())
1083 os << cur.anchor_[i];
1085 os << "-------------------------------";
1088 for (size_t i = cur.depth(), n = cur.anchor_.depth(); i < n; ++i) {
1089 os << "------------------------------- | " << cur.anchor_[i] << "\n";
1091 os << " selection: " << cur.selection_
1092 << " x_target: " << cur.x_target_ << endl;
1097 LyXErr & operator<<(LyXErr & os, Cursor const & cur)
1107 ///////////////////////////////////////////////////////////////////
1110 // The part below is the non-integrated rest of the original math
1111 // cursor. This should be either generalized for texted or moved
1112 // back to mathed (in most cases to InsetMathNest).
1114 ///////////////////////////////////////////////////////////////////
1116 #include "mathed/InsetMathChar.h"
1117 #include "mathed/InsetMathGrid.h"
1118 #include "mathed/InsetMathScript.h"
1119 #include "mathed/InsetMathUnknown.h"
1120 #include "mathed/MathFactory.h"
1121 #include "mathed/MathStream.h"
1122 #include "mathed/MathSupport.h"
1127 //#define FILEDEBUG 1
1130 bool Cursor::isInside(Inset const * p) const
1132 for (size_t i = 0; i != depth(); ++i)
1133 if (&operator[](i).inset() == p)
1139 void Cursor::leaveInset(Inset const & inset)
1141 for (size_t i = 0; i != depth(); ++i) {
1142 if (&operator[](i).inset() == &inset) {
1150 bool Cursor::openable(MathAtom const & t) const
1161 // we can't move into anything new during selection
1162 if (depth() >= anchor_.depth())
1164 if (t.nucleus() != &anchor_[depth()].inset())
1171 void Cursor::setScreenPos(int x, int /*y*/)
1174 //bruteFind(*this, x, y, 0, bv().workWidth(), 0, bv().workHeight());
1179 void Cursor::plainErase()
1181 cell().erase(pos());
1185 void Cursor::markInsert()
1187 insert(char_type(0));
1191 void Cursor::markErase()
1193 cell().erase(pos());
1197 void Cursor::plainInsert(MathAtom const & t)
1199 cell().insert(pos(), t);
1201 inset().setBuffer(bv_->buffer());
1206 void Cursor::insert(docstring const & str)
1208 for_each(str.begin(), str.end(),
1209 boost::bind(static_cast<void(Cursor::*)(char_type)>
1210 (&Cursor::insert), this, _1));
1214 void Cursor::insert(char_type c)
1216 //lyxerr << "Cursor::insert char '" << c << "'" << endl;
1217 LASSERT(!empty(), /**/);
1219 cap::selClearOrDel(*this);
1220 insert(new InsetMathChar(c));
1222 text()->insertChar(*this, c);
1227 void Cursor::insert(MathAtom const & t)
1229 //lyxerr << "Cursor::insert MathAtom '" << t << "'" << endl;
1231 cap::selClearOrDel(*this);
1236 void Cursor::insert(Inset * inset0)
1238 LASSERT(inset0, /**/);
1240 insert(MathAtom(inset0));
1242 text()->insertInset(*this, inset0);
1243 inset0->setBuffer(bv_->buffer());
1249 void Cursor::niceInsert(docstring const & t, Parse::flags f)
1260 void Cursor::niceInsert(MathAtom const & t)
1263 docstring const safe = cap::grabAndEraseSelection(*this);
1265 // enter the new inset and move the contents of the selection if possible
1266 if (t->isActive()) {
1268 // be careful here: don't use 'pushBackward(t)' as this we need to
1269 // push the clone, not the original
1270 pushBackward(*nextInset());
1271 // We may not use niceInsert here (recursion)
1279 void Cursor::insert(MathData const & ar)
1283 cap::eraseSelection(*this);
1284 cell().insert(pos(), ar);
1289 bool Cursor::backspace()
1291 autocorrect() = false;
1294 cap::eraseSelection(*this);
1299 // If empty cell, and not part of a big cell
1300 if (lastpos() == 0 && inset().nargs() == 1) {
1302 // Directly delete empty cell: [|[]] => [|]
1308 // [|], can not delete from inside
1319 if (inMacroMode()) {
1320 InsetMathUnknown * p = activeMacro();
1321 if (p->name().size() > 1) {
1322 p->setName(p->name().substr(0, p->name().size() - 1));
1327 if (pos() != 0 && prevAtom()->nargs() > 0) {
1328 // let's require two backspaces for 'big stuff' and
1329 // highlight on the first
1341 bool Cursor::erase()
1343 autocorrect() = false;
1348 cap::eraseSelection(*this);
1352 // delete empty cells if possible
1353 if (pos() == lastpos() && inset().idxDelete(idx()))
1356 // special behaviour when in last position of cell
1357 if (pos() == lastpos()) {
1358 bool one_cell = inset().nargs() == 1;
1359 if (one_cell && lastpos() == 0) {
1361 // Directly delete empty cell: [|[]] => [|]
1367 // [|], can not delete from inside
1372 inset().idxGlue(idx());
1376 // 'clever' UI hack: only erase large items if previously slected
1377 if (pos() != lastpos() && nextAtom()->nargs() > 0) {
1392 DocIterator save = *this;
1393 FuncRequest cmd(selection() ? LFUN_UP_SELECT : LFUN_UP, docstring());
1394 this->dispatch(cmd);
1395 if (disp_.dispatched())
1398 autocorrect() = false;
1406 DocIterator save = *this;
1407 FuncRequest cmd(selection() ? LFUN_DOWN_SELECT : LFUN_DOWN, docstring());
1408 this->dispatch(cmd);
1409 if (disp_.dispatched())
1412 autocorrect() = false;
1417 bool Cursor::macroModeClose()
1421 InsetMathUnknown * p = activeMacro();
1424 asArray(p->selection(), selection);
1425 docstring const s = p->name();
1427 cell().erase(pos());
1429 // do nothing if the macro name is empty
1433 // trigger updates of macros, at least, if no full
1434 // updates take place anyway
1435 updateFlags(Update::Force);
1437 docstring const name = s.substr(1);
1438 InsetMathNest * const in = inset().asInsetMath()->asNestInset();
1439 if (in && in->interpretString(*this, s))
1441 MathAtom atom = createInsetMath(name);
1443 // try to put argument into macro, if we just inserted a macro
1444 bool macroArg = false;
1445 MathMacro * atomAsMacro = atom.nucleus()->asMacro();
1447 // macros here are still unfolded (in init mode in fact). So
1448 // we have to resolve the macro here manually and check its arity
1449 // to put the selection behind it if arity > 0.
1450 MacroData const * data = buffer()->getMacro(atomAsMacro->name());
1451 if (selection.size() > 0 && data && data->numargs() - data->optionals() > 0) {
1453 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 1);
1455 // non-greedy case. Do not touch the arguments behind
1456 atomAsMacro->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT, 0);
1459 // insert remembered selection into first argument of a non-macro
1460 else if (atom.nucleus()->nargs() > 0)
1461 atom.nucleus()->cell(0).append(selection);
1465 // finally put the macro argument behind, if needed
1467 if (selection.size() > 1)
1468 plainInsert(MathAtom(new InsetMathBrace(selection)));
1477 docstring Cursor::macroName()
1479 return inMacroMode() ? activeMacro()->name() : docstring();
1483 void Cursor::handleNest(MathAtom const & a, int c)
1485 //lyxerr << "Cursor::handleNest: " << c << endl;
1487 asArray(cap::grabAndEraseSelection(*this), t.nucleus()->cell(c));
1490 pushBackward(*nextInset());
1494 int Cursor::targetX() const
1496 if (x_target() != -1)
1505 int Cursor::textTargetOffset() const
1507 return textTargetOffset_;
1511 void Cursor::setTargetX()
1520 bool Cursor::inMacroMode() const
1526 InsetMathUnknown const * p = prevAtom()->asUnknownInset();
1527 return p && !p->final();
1531 InsetMathUnknown * Cursor::activeMacro()
1533 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1537 InsetMathUnknown const * Cursor::activeMacro() const
1539 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1543 void Cursor::pullArg()
1546 MathData ar = cell();
1547 if (popBackward() && inMathed()) {
1549 cell().insert(pos(), ar);
1552 //formula()->mutateToText();
1557 void Cursor::touch()
1561 DocIterator::const_iterator it = begin();
1562 DocIterator::const_iterator et = end();
1563 for ( ; it != et; ++it)
1569 void Cursor::normalize()
1571 if (idx() > lastidx()) {
1572 lyxerr << "this should not really happen - 1: "
1573 << idx() << ' ' << nargs()
1574 << " in: " << &inset() << endl;
1578 if (pos() > lastpos()) {
1579 lyxerr << "this should not really happen - 2: "
1580 << pos() << ' ' << lastpos() << " in idx: " << idx()
1582 odocstringstream os;
1583 WriteStream wi(os, false, true, WriteStream::wsDefault);
1584 inset().asInsetMath()->write(wi);
1585 lyxerr << to_utf8(os.str()) << endl;
1591 bool Cursor::upDownInMath(bool up)
1593 // Be warned: The 'logic' implemented in this function is highly
1594 // fragile. A distance of one pixel or a '<' vs '<=' _really
1595 // matters. So fiddle around with it only if you think you know
1596 // what you are doing!
1600 xo = theLyXFunc().cursorBeforeDispatchX();
1602 // check if we had something else in mind, if not, this is the future
1604 if (x_target_ == -1)
1606 else if (inset().asInsetText() && xo - textTargetOffset() != x_target()) {
1607 // In text mode inside the line (not left or right) possibly set a new target_x,
1608 // but only if we are somewhere else than the previous target-offset.
1610 // We want to keep the x-target on subsequent up/down movements
1611 // that cross beyond the end of short lines. Thus a special
1612 // handling when the cursor is at the end of line: Use the new
1613 // x-target only if the old one was before the end of line
1614 // or the old one was after the beginning of the line
1615 bool inRTL = isWithinRtlParagraph(*this);
1619 left = pos() == textRow().endpos();
1620 right = pos() == textRow().pos();
1622 left = pos() == textRow().pos();
1623 right = pos() == textRow().endpos();
1625 if ((!left && !right) ||
1626 (left && !right && xo < x_target_) ||
1627 (!left && right && x_target_ < xo))
1634 // try neigbouring script insets
1636 if (inMathed() && !selection()) {
1639 InsetMathScript const * p = prevAtom()->asScriptInset();
1640 if (p && p->has(up)) {
1642 push(*const_cast<InsetMathScript*>(p));
1643 idx() = p->idxOfScript(up);
1646 // we went in the right direction? Otherwise don't jump into the script
1650 int oy = theLyXFunc().cursorBeforeDispatchY();
1651 if ((!up && y <= oy) ||
1660 if (pos() != lastpos()) {
1661 InsetMathScript const * p = nextAtom()->asScriptInset();
1662 if (p && p->has(up)) {
1663 push(*const_cast<InsetMathScript*>(p));
1664 idx() = p->idxOfScript(up);
1667 // we went in the right direction? Otherwise don't jump into the script
1671 int oy = theLyXFunc().cursorBeforeDispatchY();
1672 if ((!up && y <= oy) ||
1681 // try to find an inset that knows better then we,
1682 if (inset().idxUpDown(*this, up)) {
1683 //lyxerr << "idxUpDown triggered" << endl;
1684 // try to find best position within this inset
1686 setCursor(bruteFind2(*this, xo, yo));
1690 // any improvement going just out of inset?
1691 if (popBackward() && inMathed()) {
1692 //lyxerr << "updown: popBackward succeeded" << endl;
1695 int yold = theLyXFunc().cursorBeforeDispatchY();
1697 if (up ? ynew < yold : ynew > yold)
1701 // no success, we are probably at the document top or bottom
1707 bool Cursor::atFirstOrLastRow(bool up)
1709 TextMetrics const & tm = bv_->textMetrics(text());
1710 ParagraphMetrics const & pm = tm.parMetrics(pit());
1713 if (pos() && boundary())
1714 row = pm.pos2row(pos() - 1);
1716 row = pm.pos2row(pos());
1719 if (pit() == 0 && row == 0)
1722 if (pit() + 1 >= int(text()->paragraphs().size()) &&
1723 row + 1 >= int(pm.rows().size()))
1729 bool Cursor::upDownInText(bool up, bool & updateNeeded)
1731 LASSERT(text(), /**/);
1737 xo = theLyXFunc().cursorBeforeDispatchX();
1739 // update the targetX - this is here before the "return false"
1740 // to set a new target which can be used by InsetTexts above
1741 // if we cannot move up/down inside this inset anymore
1742 if (x_target_ == -1)
1744 else if (xo - textTargetOffset() != x_target() &&
1745 depth() == beforeDispatchCursor_.depth()) {
1746 // In text mode inside the line (not left or right) possibly set a new target_x,
1747 // but only if we are somewhere else than the previous target-offset.
1749 // We want to keep the x-target on subsequent up/down movements
1750 // that cross beyond the end of short lines. Thus a special
1751 // handling when the cursor is at the end of line: Use the new
1752 // x-target only if the old one was before the end of line
1753 // or the old one was after the beginning of the line
1754 bool inRTL = isWithinRtlParagraph(*this);
1758 left = pos() == textRow().endpos();
1759 right = pos() == textRow().pos();
1761 left = pos() == textRow().pos();
1762 right = pos() == textRow().endpos();
1764 if ((!left && !right) ||
1765 (left && !right && xo < x_target_) ||
1766 (!left && right && x_target_ < xo))
1773 // first get the current line
1774 TextMetrics & tm = bv_->textMetrics(text());
1775 ParagraphMetrics const & pm = tm.parMetrics(pit());
1777 if (pos() && boundary())
1778 row = pm.pos2row(pos() - 1);
1780 row = pm.pos2row(pos());
1782 if (atFirstOrLastRow(up)) {
1783 // Is there a place for the cursor to go ? If yes, we
1784 // can execute the DEPM, otherwise we should keep the
1785 // paragraph to host the cursor.
1786 Cursor dummy = *this;
1787 bool valid_destination = false;
1788 for(; dummy.depth(); dummy.pop())
1789 if (!dummy.atFirstOrLastRow(up)) {
1790 valid_destination = true;
1794 // will a next dispatch follow and if there is a new
1795 // dispatch will it move the cursor out ?
1796 if (depth() > 1 && valid_destination) {
1797 // The cursor hasn't changed yet. This happens when
1798 // you e.g. move out of an inset. And to give the
1799 // DEPM the possibility of doing something we must
1800 // provide it with two different cursors. (Lgb, vfr)
1802 dummy.pos() = dummy.pos() == 0 ? dummy.lastpos() : 0;
1803 dummy.pit() = dummy.pit() == 0 ? dummy.lastpit() : 0;
1805 updateNeeded |= bv().checkDepm(dummy, *this);
1806 updateTextTargetOffset();
1811 // with and without selection are handled differently
1813 int yo = bv().getPos(*this, boundary()).y_;
1815 // To next/previous row
1817 tm.editXY(*this, xo, yo - textRow().ascent() - 1);
1819 tm.editXY(*this, xo, yo + textRow().descent() + 1);
1822 // This happens when you move out of an inset.
1823 // And to give the DEPM the possibility of doing
1824 // something we must provide it with two different
1826 Cursor dummy = *this;
1829 if (bv().checkDepm(dummy, old)) {
1830 updateNeeded = true;
1831 // Make sure that cur gets back whatever happened to dummy(Lgb)
1835 // if there is a selection, we stay out of any inset, and just jump to the right position:
1839 top().pos() = min(tm.x2pos(pit(), row - 1, xo), top().lastpos());
1840 } else if (pit() > 0) {
1842 TextMetrics & tm = bv_->textMetrics(text());
1843 if (!tm.contains(pit()))
1844 tm.newParMetricsUp();
1845 ParagraphMetrics const & pmcur = tm.parMetrics(pit());
1846 top().pos() = min(tm.x2pos(pit(), pmcur.rows().size() - 1, xo), top().lastpos());
1849 if (row + 1 < int(pm.rows().size())) {
1850 top().pos() = min(tm.x2pos(pit(), row + 1, xo), top().lastpos());
1851 } else if (pit() + 1 < int(text()->paragraphs().size())) {
1853 TextMetrics & tm = bv_->textMetrics(text());
1854 if (!tm.contains(pit()))
1855 tm.newParMetricsDown();
1856 top().pos() = min(tm.x2pos(pit(), 0, xo), top().lastpos());
1860 updateNeeded |= bv().checkDepm(*this, old);
1863 updateTextTargetOffset();
1868 void Cursor::handleFont(string const & font)
1870 LYXERR(Debug::DEBUG, font);
1874 safe = cap::grabAndEraseSelection(*this);
1879 if (lastpos() != 0) {
1880 // something left in the cell
1882 // cursor in first position
1884 } else if (pos() == lastpos()) {
1885 // cursor in last position
1888 // cursor in between. split cell
1889 MathData::iterator bt = cell().begin();
1890 MathAtom at = createInsetMath(from_utf8(font));
1891 at.nucleus()->cell(0) = MathData(bt, bt + pos());
1892 cell().erase(bt, bt + pos());
1897 // nothing left in the cell
1906 void Cursor::message(docstring const & msg) const
1908 theLyXFunc().setMessage(msg);
1912 void Cursor::errorMessage(docstring const & msg) const
1914 theLyXFunc().setErrorMessage(msg);
1918 static docstring parbreak(InsetCode code)
1920 odocstringstream os;
1922 // only add blank line if we're not in an ERT or Listings inset
1923 if (code != ERT_CODE && code != LISTINGS_CODE)
1929 docstring Cursor::selectionAsString(bool with_label) const
1934 int const label = with_label
1935 ? AS_STR_LABEL | AS_STR_INSETS : AS_STR_INSETS;
1938 idx_type const startidx = selBegin().idx();
1939 idx_type const endidx = selEnd().idx();
1940 if (startidx != endidx) {
1941 // multicell selection
1942 InsetTabular * table = inset().asInsetTabular();
1943 LASSERT(table, return docstring());
1944 return table->asString(startidx, endidx);
1947 ParagraphList const & pars = text()->paragraphs();
1949 pit_type const startpit = selBegin().pit();
1950 pit_type const endpit = selEnd().pit();
1951 size_t const startpos = selBegin().pos();
1952 size_t const endpos = selEnd().pos();
1954 if (startpit == endpit)
1955 return pars[startpit].asString(startpos, endpos, label);
1957 // First paragraph in selection
1958 docstring result = pars[startpit].
1959 asString(startpos, pars[startpit].size(), label)
1960 + parbreak(inset().lyxCode());
1962 // The paragraphs in between (if any)
1963 for (pit_type pit = startpit + 1; pit != endpit; ++pit) {
1964 Paragraph const & par = pars[pit];
1965 result += par.asString(0, par.size(), label)
1966 + parbreak(inset().lyxCode());
1969 // Last paragraph in selection
1970 result += pars[endpit].asString(0, endpos, label);
1976 return cap::grabSelection(*this);
1982 docstring Cursor::currentState() const
1985 odocstringstream os;
1991 return text()->currentState(*this);
1997 docstring Cursor::getPossibleLabel() const
1999 return inMathed() ? from_ascii("eq:") : text()->getPossibleLabel(*this);
2003 Encoding const * Cursor::getEncoding() const
2007 CursorSlice const & sl = innerTextSlice();
2008 Text const & text = *sl.text();
2009 Font font = text.getPar(sl.pit()).getFont(
2010 bv().buffer().params(), sl.pos(), outerFont(sl.pit(), text.paragraphs()));
2011 return font.language()->encoding();
2015 void Cursor::undispatched()
2017 disp_.dispatched(false);
2021 void Cursor::dispatched()
2023 disp_.dispatched(true);
2027 void Cursor::updateFlags(Update::flags f)
2033 void Cursor::noUpdate()
2035 disp_.update(Update::None);
2039 Font Cursor::getFont() const
2041 // The logic here should more or less match to the Cursor::setCurrentFont
2042 // logic, i.e. the cursor height should give a hint what will happen
2043 // if a character is entered.
2045 // HACK. far from being perfect...
2047 CursorSlice const & sl = innerTextSlice();
2048 Text const & text = *sl.text();
2049 Paragraph const & par = text.getPar(sl.pit());
2051 // on boundary, so we are really at the character before
2052 pos_type pos = sl.pos();
2053 if (pos > 0 && boundary())
2056 // on space? Take the font before (only for RTL boundary stay)
2058 TextMetrics const & tm = bv().textMetrics(&text);
2059 if (pos == sl.lastpos()
2060 || (par.isSeparator(pos)
2061 && !tm.isRTLBoundary(sl.pit(), pos)))
2065 // get font at the position
2066 Font font = par.getFont(buffer()->params(), pos,
2067 outerFont(sl.pit(), text.paragraphs()));
2073 bool Cursor::fixIfBroken()
2075 if (DocIterator::fixIfBroken()) {
2083 bool notifyCursorLeavesOrEnters(Cursor const & old, Cursor & cur)
2085 // find inset in common
2087 for (i = 0; i < old.depth() && i < cur.depth(); ++i) {
2088 if (&old[i].inset() != &cur[i].inset())
2092 // update words if we just moved to another paragraph
2093 if (i == old.depth() && i == cur.depth()
2094 && !cur.buffer()->isClean()
2095 && cur.inTexted() && old.inTexted()
2096 && cur.pit() != old.pit()) {
2097 old.paragraph().updateWords();
2100 // notify everything on top of the common part in old cursor,
2101 // but stop if the inset claims the cursor to be invalid now
2102 for (size_type j = i; j < old.depth(); ++j) {
2103 Cursor insetPos = old;
2105 if (old[j].inset().notifyCursorLeaves(insetPos, cur))
2109 // notify everything on top of the common part in new cursor,
2110 // but stop if the inset claims the cursor to be invalid now
2111 for (; i < cur.depth(); ++i) {
2112 if (cur[i].inset().notifyCursorEnters(cur))
2120 void Cursor::setCurrentFont()
2122 CursorSlice const & cs = innerTextSlice();
2123 Paragraph const & par = cs.paragraph();
2124 pos_type cpit = cs.pit();
2125 pos_type cpos = cs.pos();
2126 Text const & ctext = *cs.text();
2127 TextMetrics const & tm = bv().textMetrics(&ctext);
2129 // are we behind previous char in fact? -> go to that char
2130 if (cpos > 0 && boundary())
2133 // find position to take the font from
2135 // paragraph end? -> font of last char
2136 if (cpos == lastpos())
2138 // on space? -> look at the words in front of space
2139 else if (cpos > 0 && par.isSeparator(cpos)) {
2140 // abc| def -> font of c
2141 // abc |[WERBEH], i.e. boundary==true -> font of c
2142 // abc [WERBEH]| def, font of the space
2143 if (!tm.isRTLBoundary(cpit, cpos))
2149 BufferParams const & bufparams = buffer()->params();
2150 current_font = par.getFontSettings(bufparams, cpos);
2151 real_current_font = tm.displayFont(cpit, cpos);
2153 // special case for paragraph end
2154 if (cs.pos() == lastpos()
2155 && tm.isRTLBoundary(cpit, cs.pos())
2157 Language const * lang = par.getParLanguage(bufparams);
2158 current_font.setLanguage(lang);
2159 current_font.fontInfo().setNumber(FONT_OFF);
2160 real_current_font.setLanguage(lang);
2161 real_current_font.fontInfo().setNumber(FONT_OFF);
2166 bool Cursor::textUndo()
2168 DocIterator dit = *this;
2169 // Undo::textUndo() will modify dit.
2170 if (!buffer()->undo().textUndo(dit))
2180 bool Cursor::textRedo()
2182 DocIterator dit = *this;
2183 // Undo::textRedo() will modify dit.
2184 if (!buffer()->undo().textRedo(dit))
2194 void Cursor::finishUndo() const
2196 buffer()->undo().finishUndo();
2200 void Cursor::beginUndoGroup() const
2202 buffer()->undo().beginUndoGroup();
2206 void Cursor::endUndoGroup() const
2208 buffer()->undo().endUndoGroup();
2212 void Cursor::recordUndo(UndoKind kind, pit_type from, pit_type to) const
2214 buffer()->undo().recordUndo(*this, kind, from, to);
2218 void Cursor::recordUndo(UndoKind kind, pit_type from) const
2220 buffer()->undo().recordUndo(*this, kind, from);
2224 void Cursor::recordUndo(UndoKind kind) const
2226 buffer()->undo().recordUndo(*this, kind);
2230 void Cursor::recordUndoInset(UndoKind kind) const
2232 buffer()->undo().recordUndoInset(*this, kind);
2236 void Cursor::recordUndoFullDocument() const
2238 buffer()->undo().recordUndoFullDocument(*this);
2242 void Cursor::recordUndoSelection() const
2245 if (cap::multipleCellsSelected(*this))
2250 buffer()->undo().recordUndo(*this, ATOMIC_UNDO,
2251 selBegin().pit(), selEnd().pit());
2256 void Cursor::checkBufferStructure()
2258 Buffer const * master = buffer()->masterBuffer();
2259 master->tocBackend().updateItem(*this);
2260 if (master != buffer() && !master->hasGuiDelegate())
2261 // In case the master has no gui associated with it,
2262 // the TocItem is not updated (part of bug 5699).
2263 buffer()->tocBackend().updateItem(*this);