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.h"
32 #include "ParIterator.h"
35 #include "TextMetrics.h"
36 #include "TocBackend.h"
38 #include "support/lassert.h"
39 #include "support/debug.h"
40 #include "support/docstream.h"
42 #include "insets/InsetTabular.h"
43 #include "insets/InsetText.h"
45 #include "mathed/InsetMath.h"
46 #include "mathed/InsetMathBrace.h"
47 #include "mathed/InsetMathScript.h"
48 #include "mathed/MacroTable.h"
49 #include "mathed/MathData.h"
50 #include "mathed/MathMacro.h"
52 #include <boost/bind.hpp>
64 bool positionable(DocIterator
const & cursor
, DocIterator
const & anchor
)
66 // avoid deeper nested insets when selecting
67 if (cursor
.depth() > anchor
.depth())
70 // anchor might be deeper, should have same path then
71 for (size_t i
= 0; i
< cursor
.depth(); ++i
)
72 if (&cursor
[i
].inset() != &anchor
[i
].inset())
75 // position should be ok.
80 // Find position closest to (x, y) in cell given by iter.
81 // Used only in mathed
82 DocIterator
bruteFind2(Cursor
const & c
, int x
, int y
)
84 double best_dist
= numeric_limits
<double>::max();
91 et
.top().pos() = et
.top().asInsetMath()->cell(et
.top().idx()).size();
92 for (size_t i
= 0;; ++i
) {
95 Inset
const * inset
= &it
.inset();
96 map
<Inset
const *, Geometry
> const & data
=
97 c
.bv().coordCache().getInsets().getData();
98 map
<Inset
const *, Geometry
>::const_iterator I
= data
.find(inset
);
100 // FIXME: in the case where the inset is not in the cache, this
101 // means that no part of it is visible on screen. In this case
102 // we don't do elaborate search and we just return the forwarded
103 // DocIterator at its beginning.
104 if (I
== data
.end()) {
109 Point o
= I
->second
.pos
;
110 inset
->cursorPos(c
.bv(), it
.top(), c
.boundary(), xo
, yo
);
111 // Convert to absolute
114 double d
= (x
- xo
) * (x
- xo
) + (y
- yo
) * (y
- yo
);
115 // '<=' in order to take the last possible position
116 // this is important for clicking behind \sum in e.g. '\sum_i a'
117 LYXERR(Debug::DEBUG
, "i: " << i
<< " d: " << d
118 << " best: " << best_dist
);
119 if (d
<= best_dist
) {
132 /// moves position closest to (x, y) in given box
133 bool bruteFind(Cursor & cursor,
134 int x, int y, int xlow, int xhigh, int ylow, int yhigh)
136 LASSERT(!cursor.empty(), return false);
137 Inset & inset = cursor[0].inset();
138 BufferView & bv = cursor.bv();
140 CoordCache::InnerParPosCache const & cache =
141 bv.coordCache().getParPos().find(cursor.bottom().text())->second;
142 // Get an iterator on the first paragraph in the cache
143 DocIterator it(inset);
144 it.push_back(CursorSlice(inset));
145 it.pit() = cache.begin()->first;
146 // Get an iterator after the last paragraph in the cache
147 DocIterator et(inset);
148 et.push_back(CursorSlice(inset));
149 et.pit() = boost::prior(cache.end())->first;
150 if (et.pit() >= et.lastpit())
151 et = doc_iterator_end(inset);
155 double best_dist = numeric_limits<double>::max();;
156 DocIterator best_cursor = et;
158 for ( ; it != et; it.forwardPos(true)) {
159 // avoid invalid nesting when selecting
160 if (!cursor.selection() || positionable(it, cursor.anchor_)) {
161 Point p = bv.getPos(it, false);
164 if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
165 double const dx = xo - x;
166 double const dy = yo - y;
167 double const d = dx * dx + dy * dy;
168 // '<=' in order to take the last possible position
169 // this is important for clicking behind \sum in e.g. '\sum_i a'
170 if (d <= best_dist) {
171 // lyxerr << "*" << endl;
179 if (best_cursor != et) {
180 cursor.setCursor(best_cursor);
189 /// moves position closest to (x, y) in given box
190 bool bruteFind3(Cursor
& cur
, int x
, int y
, bool up
)
192 BufferView
& bv
= cur
.bv();
193 int ylow
= up
? 0 : y
+ 1;
194 int yhigh
= up
? y
- 1 : bv
.workHeight();
196 int xhigh
= bv
.workWidth();
198 // FIXME: bit more work needed to get 'from' and 'to' right.
199 pit_type from
= cur
.bottom().pit();
200 //pit_type to = cur.bottom().pit();
201 //lyxerr << "Pit start: " << from << endl;
203 //lyxerr << "bruteFind3: x: " << x << " y: " << y
204 // << " xlow: " << xlow << " xhigh: " << xhigh
205 // << " ylow: " << ylow << " yhigh: " << yhigh
207 DocIterator it
= doc_iterator_begin(cur
.buffer());
209 DocIterator et
= doc_iterator_end(cur
.buffer());
211 double best_dist
= numeric_limits
<double>::max();
212 DocIterator best_cursor
= et
;
214 for ( ; it
!= et
; it
.forwardPos()) {
215 // avoid invalid nesting when selecting
216 if (bv
.cursorStatus(it
) == CUR_INSIDE
217 && (!cur
.selection() || positionable(it
, cur
.anchor_
))) {
218 Point p
= bv
.getPos(it
, false);
221 if (xlow
<= xo
&& xo
<= xhigh
&& ylow
<= yo
&& yo
<= yhigh
) {
222 double const dx
= xo
- x
;
223 double const dy
= yo
- y
;
224 double const d
= dx
* dx
+ dy
* dy
;
225 //lyxerr << "itx: " << xo << " ity: " << yo << " d: " << d
226 // << " dx: " << dx << " dy: " << dy
227 // << " idx: " << it.idx() << " pos: " << it.pos()
230 // '<=' in order to take the last possible position
231 // this is important for clicking behind \sum in e.g. '\sum_i a'
232 if (d
<= best_dist
) {
233 //lyxerr << "*" << endl;
241 //lyxerr << "best_dist: " << best_dist << " cur:\n" << best_cursor << endl;
242 if (best_cursor
== et
)
244 cur
.setCursor(best_cursor
);
251 // be careful: this is called from the bv's constructor, too, so
252 // bv functions are not yet available!
253 Cursor::Cursor(BufferView
& bv
)
254 : DocIterator(&bv
.buffer()), bv_(&bv
), anchor_(),
255 x_target_(-1), textTargetOffset_(0),
256 selection_(false), mark_(false), logicalpos_(false),
257 current_font(inherit_font
)
261 void Cursor::reset(Inset
& inset
)
264 push_back(CursorSlice(inset
));
265 anchor_
= doc_iterator_begin(&inset
.buffer(), &inset
);
273 // this (intentionally) does neither touch anchor nor selection status
274 void Cursor::setCursor(DocIterator
const & cur
)
276 DocIterator::operator=(cur
);
280 void Cursor::dispatch(FuncRequest
const & cmd0
)
282 LYXERR(Debug::DEBUG
, "cmd: " << cmd0
<< '\n' << *this);
287 FuncRequest cmd
= cmd0
;
290 buffer()->undo().beginUndoGroup();
292 // store some values to be used inside of the handlers
293 beforeDispatchCursor_
= *this;
294 for (; depth(); pop(), boundary(false)) {
295 LYXERR(Debug::DEBUG
, "Cursor::dispatch: cmd: "
296 << cmd0
<< endl
<< *this);
297 LASSERT(pos() <= lastpos(), /**/);
298 LASSERT(idx() <= lastidx(), /**/);
299 LASSERT(pit() <= lastpit(), /**/);
301 // The common case is 'LFUN handled, need update', so make the
302 // LFUN handler's life easier by assuming this as default value.
303 // The handler can reset the update and val flags if necessary.
304 disp_
.update(Update::FitCursor
| Update::Force
);
305 disp_
.dispatched(true);
306 inset().dispatch(*this, cmd
);
307 if (disp_
.dispatched())
311 // it completely to get a 'bomb early' behaviour in case this
312 // object will be used again.
313 if (!disp_
.dispatched()) {
314 LYXERR(Debug::DEBUG
, "RESTORING OLD CURSOR!");
315 // We might have invalidated the cursor when removing an empty
316 // paragraph while the cursor could not be moved out the inset
317 // while we initially thought we could. This might happen when
318 // a multiline inset becomes an inline inset when the second
319 // paragraph is removed.
320 if (safe
.pit() > safe
.lastpit()) {
321 safe
.pit() = safe
.lastpit();
322 safe
.pos() = safe
.lastpos();
325 disp_
.update(Update::None
);
326 disp_
.dispatched(false);
328 // restore the previous one because nested Cursor::dispatch calls
329 // are possible which would change it
330 beforeDispatchCursor_
= safe
.beforeDispatchCursor_
;
332 buffer()->undo().endUndoGroup();
336 DispatchResult
Cursor::result() const
342 BufferView
& Cursor::bv() const
351 LASSERT(depth() >= 1, /**/);
356 void Cursor::push(Inset
& p
)
358 push_back(CursorSlice(p
));
359 p
.setBuffer(*buffer());
363 void Cursor::pushBackward(Inset
& p
)
365 LASSERT(!empty(), return);
366 //lyxerr << "Entering inset " << t << " front" << endl;
372 bool Cursor::popBackward()
374 LASSERT(!empty(), return false);
382 bool Cursor::popForward()
384 LASSERT(!empty(), return false);
385 //lyxerr << "Leaving inset from in back" << endl;
386 const pos_type lp
= (depth() > 1) ? (*this)[depth() - 2].lastpos() : 0;
390 pos() += lastpos() - lp
+ 1;
395 int Cursor::currentMode()
397 LASSERT(!empty(), /**/);
398 for (int i
= depth() - 1; i
>= 0; --i
) {
399 int res
= operator[](i
).inset().currentMode();
400 bool locked_mode
= operator[](i
).inset().lockedMode();
401 // Also return UNDECIDED_MODE when the mode is locked,
402 // as in this case it is treated the same as TEXT_MODE
403 if (res
!= Inset::UNDECIDED_MODE
|| locked_mode
)
406 return Inset::TEXT_MODE
;
410 void Cursor::getPos(int & x
, int & y
) const
412 Point p
= bv().getPos(*this, boundary());
418 Row
const & Cursor::textRow() const
420 CursorSlice
const & cs
= innerTextSlice();
421 ParagraphMetrics
const & pm
= bv().parMetrics(cs
.text(), cs
.pit());
422 LASSERT(!pm
.rows().empty(), /**/);
423 return pm
.getRow(pos(), boundary());
427 void Cursor::resetAnchor()
433 void Cursor::setCursorToAnchor()
440 bool Cursor::posBackward()
449 bool Cursor::posForward()
451 if (pos() == lastpos())
458 bool Cursor::posVisRight(bool skip_inset
)
460 Cursor new_cur
= *this; // where we will move to
461 pos_type left_pos
; // position visually left of current cursor
462 pos_type right_pos
; // position visually right of current cursor
463 bool new_pos_is_RTL
; // is new position we're moving to RTL?
465 getSurroundingPos(left_pos
, right_pos
);
467 LYXERR(Debug::RTL
, left_pos
<<"|"<< right_pos
<< " (pos: "<< pos() <<")");
469 // Are we at an inset?
470 new_cur
.pos() = right_pos
;
471 new_cur
.boundary(false);
473 text()->checkAndActivateInsetVisual(new_cur
, right_pos
>= pos(), false)) {
474 // we actually move the cursor at the end of this function, for now
475 // we just keep track of the new position in new_cur...
476 LYXERR(Debug::RTL
, "entering inset at: " << new_cur
.pos());
479 // Are we already at rightmost pos in row?
480 else if (text()->empty() || right_pos
== -1) {
483 if (!new_cur
.posVisToNewRow(false)) {
484 LYXERR(Debug::RTL
, "not moving!");
488 // we actually move the cursor at the end of this function, for now
489 // just keep track of the new position in new_cur...
490 LYXERR(Debug::RTL
, "right edge, moving: " << int(new_cur
.pit()) << ","
491 << int(new_cur
.pos()) << "," << (new_cur
.boundary() ? 1 : 0));
494 // normal movement to the right
497 // Recall, if the cursor is at position 'x', that means *before*
498 // the character at position 'x'. In RTL, "before" means "to the
499 // right of", in LTR, "to the left of". So currently our situation
500 // is this: the position to our right is 'right_pos' (i.e., we're
501 // currently to the left of 'right_pos'). In order to move to the
502 // right, it depends whether or not the character at 'right_pos' is RTL.
503 new_pos_is_RTL
= paragraph().getFontSettings(
504 buffer()->params(), right_pos
).isVisibleRightToLeft();
505 // If the character at 'right_pos' *is* LTR, then in order to move to
506 // the right of it, we need to be *after* 'right_pos', i.e., move to
507 // position 'right_pos' + 1.
508 if (!new_pos_is_RTL
) {
509 new_cur
.pos() = right_pos
+ 1;
510 // set the boundary to true in two situations:
512 // 1. if new_pos is now lastpos, and we're in an RTL paragraph
513 // (this means that we're moving right to the end of an LTR chunk
514 // which is at the end of an RTL paragraph);
515 (new_cur
.pos() == lastpos()
516 && paragraph().isRTL(buffer()->params()))
517 // 2. if the position *after* right_pos is RTL (we want to be
518 // *after* right_pos, not before right_pos + 1!)
519 || paragraph().getFontSettings(buffer()->params(),
520 new_cur
.pos()).isVisibleRightToLeft()
522 new_cur
.boundary(true);
523 else // set the boundary to false
524 new_cur
.boundary(false);
526 // Otherwise (if the character at position 'right_pos' is RTL), then
527 // moving to the right of it is as easy as setting the new position
530 new_cur
.pos() = right_pos
;
531 new_cur
.boundary(false);
536 bool moved
= (new_cur
.pos() != pos()
537 || new_cur
.pit() != pit()
538 || new_cur
.boundary() != boundary()
539 || &new_cur
.inset() != &inset());
542 LYXERR(Debug::RTL
, "moving to: " << new_cur
.pos()
543 << (new_cur
.boundary() ? " (boundary)" : ""));
551 bool Cursor::posVisLeft(bool skip_inset
)
553 Cursor new_cur
= *this; // where we will move to
554 pos_type left_pos
; // position visually left of current cursor
555 pos_type right_pos
; // position visually right of current cursor
556 bool new_pos_is_RTL
; // is new position we're moving to RTL?
558 getSurroundingPos(left_pos
, right_pos
);
560 LYXERR(Debug::RTL
, left_pos
<<"|"<< right_pos
<< " (pos: "<< pos() <<")");
562 // Are we at an inset?
563 new_cur
.pos() = left_pos
;
564 new_cur
.boundary(false);
566 text()->checkAndActivateInsetVisual(new_cur
, left_pos
>= pos(), true)) {
567 // we actually move the cursor at the end of this function, for now
568 // we just keep track of the new position in new_cur...
569 LYXERR(Debug::RTL
, "entering inset at: " << new_cur
.pos());
572 // Are we already at leftmost pos in row?
573 else if (text()->empty() || left_pos
== -1) {
576 if (!new_cur
.posVisToNewRow(true)) {
577 LYXERR(Debug::RTL
, "not moving!");
581 // we actually move the cursor at the end of this function, for now
582 // just keep track of the new position in new_cur...
583 LYXERR(Debug::RTL
, "left edge, moving: " << int(new_cur
.pit()) << ","
584 << int(new_cur
.pos()) << "," << (new_cur
.boundary() ? 1 : 0));
587 // normal movement to the left
590 // Recall, if the cursor is at position 'x', that means *before*
591 // the character at position 'x'. In RTL, "before" means "to the
592 // right of", in LTR, "to the left of". So currently our situation
593 // is this: the position to our left is 'left_pos' (i.e., we're
594 // currently to the right of 'left_pos'). In order to move to the
595 // left, it depends whether or not the character at 'left_pos' is RTL.
596 new_pos_is_RTL
= paragraph().getFontSettings(
597 buffer()->params(), left_pos
).isVisibleRightToLeft();
598 // If the character at 'left_pos' *is* RTL, then in order to move to
599 // the left of it, we need to be *after* 'left_pos', i.e., move to
600 // position 'left_pos' + 1.
601 if (new_pos_is_RTL
) {
602 new_cur
.pos() = left_pos
+ 1;
603 // set the boundary to true in two situations:
605 // 1. if new_pos is now lastpos and we're in an LTR paragraph
606 // (this means that we're moving left to the end of an RTL chunk
607 // which is at the end of an LTR paragraph);
608 (new_cur
.pos() == lastpos()
609 && !paragraph().isRTL(buffer()->params()))
610 // 2. if the position *after* left_pos is not RTL (we want to be
611 // *after* left_pos, not before left_pos + 1!)
612 || !paragraph().getFontSettings(buffer()->params(),
613 new_cur
.pos()).isVisibleRightToLeft()
615 new_cur
.boundary(true);
616 else // set the boundary to false
617 new_cur
.boundary(false);
619 // Otherwise (if the character at position 'left_pos' is LTR), then
620 // moving to the left of it is as easy as setting the new position
623 new_cur
.pos() = left_pos
;
624 new_cur
.boundary(false);
629 bool moved
= (new_cur
.pos() != pos()
630 || new_cur
.pit() != pit()
631 || new_cur
.boundary() != boundary());
634 LYXERR(Debug::RTL
, "moving to: " << new_cur
.pos()
635 << (new_cur
.boundary() ? " (boundary)" : ""));
643 void Cursor::getSurroundingPos(pos_type
& left_pos
, pos_type
& right_pos
)
645 // preparing bidi tables
646 Paragraph
const & par
= paragraph();
647 Buffer
const & buf
= *buffer();
648 Row
const & row
= textRow();
650 bidi
.computeTables(par
, buf
, row
);
652 LYXERR(Debug::RTL
, "bidi: " << row
.pos() << "--" << row
.endpos());
654 // The cursor is painted *before* the character at pos(), or, if 'boundary'
655 // is true, *after* the character at (pos() - 1). So we already have one
656 // known position around the cursor:
657 pos_type
const known_pos
= boundary() && pos() > 0 ? pos() - 1 : pos();
659 // edge case: if we're at the end of the paragraph, things are a little
660 // different (because lastpos is a position which does not really "exist"
661 // --- there's no character there yet).
662 if (known_pos
== lastpos()) {
663 if (par
.isRTL(buf
.params())) {
665 right_pos
= bidi
.vis2log(row
.pos());
669 left_pos
= bidi
.vis2log(row
.endpos() - 1);
674 // Whether 'known_pos' is to the left or to the right of the cursor depends
675 // on whether it is an RTL or LTR character...
676 bool const cur_is_RTL
=
677 par
.getFontSettings(buf
.params(), known_pos
).isVisibleRightToLeft();
678 // ... in the following manner:
679 // For an RTL character, "before" means "to the right" and "after" means
680 // "to the left"; and for LTR, it's the reverse. So, 'known_pos' is to the
681 // right of the cursor if (RTL && boundary) or (!RTL && !boundary):
682 bool const known_pos_on_right
= cur_is_RTL
== boundary();
684 // So we now know one of the positions surrounding the cursor. Let's
685 // determine the other one:
686 if (known_pos_on_right
) {
687 right_pos
= known_pos
;
688 // *visual* position of 'left_pos':
689 pos_type v_left_pos
= bidi
.log2vis(right_pos
) - 1;
690 // If the position we just identified as 'left_pos' is a "skipped
691 // separator" (a separator which is at the logical end of a row,
692 // except for the last row in a paragraph; such separators are not
693 // painted, so they "are not really there"; note that in bidi text,
694 // such a separator could appear visually in the middle of a row),
695 // set 'left_pos' to the *next* position to the left.
696 if (bidi
.inRange(v_left_pos
)
697 && bidi
.vis2log(v_left_pos
) + 1 == row
.endpos()
698 && row
.endpos() < lastpos()
699 && par
.isSeparator(bidi
.vis2log(v_left_pos
)))
702 // calculate the logical position of 'left_pos', if in row
703 if (!bidi
.inRange(v_left_pos
))
706 left_pos
= bidi
.vis2log(v_left_pos
);
707 // If the position we identified as 'right_pos' is a "skipped
708 // separator", set 'right_pos' to the *next* position to the right.
709 if (right_pos
+ 1 == row
.endpos() && row
.endpos() < lastpos()
710 && par
.isSeparator(right_pos
)) {
711 pos_type
const v_right_pos
= bidi
.log2vis(right_pos
) + 1;
712 if (!bidi
.inRange(v_right_pos
))
715 right_pos
= bidi
.vis2log(v_right_pos
);
718 // known_pos is on the left
719 left_pos
= known_pos
;
720 // *visual* position of 'right_pos'
721 pos_type v_right_pos
= bidi
.log2vis(left_pos
) + 1;
722 // If the position we just identified as 'right_pos' is a "skipped
723 // separator", set 'right_pos' to the *next* position to the right.
724 if (bidi
.inRange(v_right_pos
)
725 && bidi
.vis2log(v_right_pos
) + 1 == row
.endpos()
726 && row
.endpos() < lastpos()
727 && par
.isSeparator(bidi
.vis2log(v_right_pos
)))
730 // calculate the logical position of 'right_pos', if in row
731 if (!bidi
.inRange(v_right_pos
))
734 right_pos
= bidi
.vis2log(v_right_pos
);
735 // If the position we identified as 'left_pos' is a "skipped
736 // separator", set 'left_pos' to the *next* position to the left.
737 if (left_pos
+ 1 == row
.endpos() && row
.endpos() < lastpos()
738 && par
.isSeparator(left_pos
)) {
739 pos_type
const v_left_pos
= bidi
.log2vis(left_pos
) - 1;
740 if (!bidi
.inRange(v_left_pos
))
743 left_pos
= bidi
.vis2log(v_left_pos
);
750 bool Cursor::posVisToNewRow(bool movingLeft
)
752 Paragraph
const & par
= paragraph();
753 Buffer
const & buf
= *buffer();
754 Row
const & row
= textRow();
755 bool par_is_LTR
= !par
.isRTL(buf
.params());
757 // Inside a table, determining whether to move to the next or previous row
758 // should be done based on the table's direction.
760 if (s
>= 1 && (*this)[s
].inset().asInsetTabular()) {
761 par_is_LTR
= !(*this)[s
].inset().asInsetTabular()->isRightToLeft(*this);
762 LYXERR(Debug::RTL
, "Inside table! par_is_LTR=" << (par_is_LTR
? 1 : 0));
765 // if moving left in an LTR paragraph or moving right in an RTL one,
766 // move to previous row
767 if (par_is_LTR
== movingLeft
) {
768 if (row
.pos() == 0) { // we're at first row in paragraph
769 if (pit() == 0) // no previous paragraph! don't move
771 // move to last pos in previous par
775 } else { // move to previous row in this par
776 pos() = row
.pos() - 1; // this is guaranteed to be in previous row
780 // if moving left in an RTL paragraph or moving right in an LTR one,
783 if (row
.endpos() == lastpos()) { // we're at last row in paragraph
784 if (pit() == lastpit()) // last paragraph! don't move
786 // move to first row in next par
790 } else { // move to next row in this par
791 pos() = row
.endpos();
796 // make sure we're at left-/right-most pos in new row
797 posVisToRowExtremity(!movingLeft
);
803 void Cursor::posVisToRowExtremity(bool left
)
805 // prepare bidi tables
806 Paragraph
const & par
= paragraph();
807 Buffer
const & buf
= *buffer();
808 Row
const & row
= textRow();
810 bidi
.computeTables(par
, buf
, row
);
812 LYXERR(Debug::RTL
, "entering extremity: " << pit() << "," << pos() << ","
813 << (boundary() ? 1 : 0));
815 if (left
) { // move to leftmost position
816 // if this is an RTL paragraph, and we're at the last row in the
817 // paragraph, move to lastpos
818 if (par
.isRTL(buf
.params()) && row
.endpos() == lastpos())
821 pos() = bidi
.vis2log(row
.pos());
823 // Moving to the leftmost position in the row, the cursor should
824 // normally be placed to the *left* of the leftmost position.
825 // A very common exception, though, is if the leftmost character
826 // also happens to be the separator at the (logical) end of the row
827 // --- in this case, the separator is positioned beyond the left
828 // margin, and we don't want to move the cursor there (moving to
829 // the left of the separator is equivalent to moving to the next
830 // line). So, in this case we actually want to place the cursor
831 // to the *right* of the leftmost position (the separator).
832 // Another exception is if we're moving to the logically last
833 // position in the row, which is *not* a separator: this means
834 // that the entire row has no separators (if there were any, the
835 // row would have been broken there); and therefore in this case
836 // we also move to the *right* of the last position (this indicates
837 // to the user that there is no space after this position, and is
838 // consistent with the behavior in the middle of a row --- moving
839 // right or left moves to the next/previous character; if we were
840 // to move to the *left* of this position, that would simulate
841 // a separator which is not really there!).
842 // Finally, there is an exception to the previous exception: if
843 // this non-separator-but-last-position-in-row is an inset, then
844 // we *do* want to stay to the left of it anyway: this is the
845 // "boundary" which we simulate at insets.
846 // Another exception is when row.endpos() is 0.
848 // do we want to be to the right of pos?
849 // as explained above, if at last pos in row, stay to the right
850 bool const right_of_pos
= row
.endpos() > 0
851 && pos() == row
.endpos() - 1 && !par
.isInset(pos());
853 // Now we know if we want to be to the left or to the right of pos,
854 // let's make sure we are where we want to be.
855 bool const new_pos_is_RTL
=
856 par
.getFontSettings(buf
.params(), pos()).isVisibleRightToLeft();
858 if (new_pos_is_RTL
!= right_of_pos
) {
864 // move to rightmost position
865 // if this is an LTR paragraph, and we're at the last row in the
866 // paragraph, move to lastpos
867 if (!par
.isRTL(buf
.params()) && row
.endpos() == lastpos())
870 pos() = row
.endpos() > 0 ? bidi
.vis2log(row
.endpos() - 1) : 0;
872 // Moving to the rightmost position in the row, the cursor should
873 // normally be placed to the *right* of the rightmost position.
874 // A very common exception, though, is if the rightmost character
875 // also happens to be the separator at the (logical) end of the row
876 // --- in this case, the separator is positioned beyond the right
877 // margin, and we don't want to move the cursor there (moving to
878 // the right of the separator is equivalent to moving to the next
879 // line). So, in this case we actually want to place the cursor
880 // to the *left* of the rightmost position (the separator).
881 // Another exception is if we're moving to the logically last
882 // position in the row, which is *not* a separator: this means
883 // that the entire row has no separators (if there were any, the
884 // row would have been broken there); and therefore in this case
885 // we also move to the *left* of the last position (this indicates
886 // to the user that there is no space after this position, and is
887 // consistent with the behavior in the middle of a row --- moving
888 // right or left moves to the next/previous character; if we were
889 // to move to the *right* of this position, that would simulate
890 // a separator which is not really there!).
891 // Finally, there is an exception to the previous exception: if
892 // this non-separator-but-last-position-in-row is an inset, then
893 // we *do* want to stay to the right of it anyway: this is the
894 // "boundary" which we simulate at insets.
895 // Another exception is when row.endpos() is 0.
897 // do we want to be to the left of pos?
898 // as explained above, if at last pos in row, stay to the left,
899 // unless the last position is the same as the first.
900 bool const left_of_pos
= row
.endpos() > 0
901 && pos() == row
.endpos() - 1 && !par
.isInset(pos());
903 // Now we know if we want to be to the left or to the right of pos,
904 // let's make sure we are where we want to be.
905 bool const new_pos_is_RTL
=
906 par
.getFontSettings(buf
.params(), pos()).isVisibleRightToLeft();
908 if (new_pos_is_RTL
== left_of_pos
) {
914 LYXERR(Debug::RTL
, "leaving extremity: " << pit() << "," << pos() << ","
915 << (boundary() ? 1 : 0));
919 CursorSlice
Cursor::anchor() const
923 LASSERT(anchor_
.depth() >= depth(), /**/);
924 CursorSlice normal
= anchor_
[depth() - 1];
925 if (depth() < anchor_
.depth() && top() <= normal
) {
926 // anchor is behind cursor -> move anchor behind the inset
933 CursorSlice
Cursor::selBegin() const
937 return anchor() < top() ? anchor() : top();
941 CursorSlice
Cursor::selEnd() const
945 return anchor() > top() ? anchor() : top();
949 DocIterator
Cursor::selectionBegin() const
955 // FIXME: This is a work-around for the problem that
956 // CursorSlice doesn't keep track of the boundary.
957 if (anchor() == top())
958 di
= anchor_
.boundary() > boundary() ? anchor_
: *this;
960 di
= anchor() < top() ? anchor_
: *this;
966 DocIterator
Cursor::selectionEnd() const
972 // FIXME: This is a work-around for the problem that
973 // CursorSlice doesn't keep track of the boundary.
974 if (anchor() == top())
975 di
= anchor_
.boundary() < boundary() ? anchor_
: *this;
977 di
= anchor() > top() ? anchor_
: *this;
979 if (di
.depth() > depth()) {
987 void Cursor::setSelection()
990 // A selection with no contents is not a selection
991 // FIXME: doesnt look ok
992 if (idx() == anchor().idx() &&
993 pit() == anchor().pit() &&
994 pos() == anchor().pos())
999 void Cursor::setSelection(DocIterator
const & where
, int n
)
1008 void Cursor::clearSelection()
1010 setSelection(false);
1016 void Cursor::setTargetX(int x
)
1019 textTargetOffset_
= 0;
1023 int Cursor::x_target() const
1029 void Cursor::clearTargetX()
1032 textTargetOffset_
= 0;
1036 void Cursor::updateTextTargetOffset()
1041 textTargetOffset_
= x
- x_target_
;
1045 void Cursor::info(odocstream
& os
) const
1047 for (int i
= 1, n
= depth(); i
< n
; ++i
) {
1048 operator[](i
).inset().infoize(os
);
1052 Inset
const * inset
= prevInset();
1053 // prevInset() can return 0 in certain case.
1055 prevInset()->infoize2(os
);
1057 // overwite old message
1062 bool Cursor::selHandle(bool sel
)
1064 //lyxerr << "Cursor::selHandle" << endl;
1067 if (sel
== selection())
1071 cap::saveSelection(*this);
1079 ostream
& operator<<(ostream
& os
, Cursor
const & cur
)
1081 os
<< "\n cursor: | anchor:\n";
1082 for (size_t i
= 0, n
= cur
.depth(); i
!= n
; ++i
) {
1083 os
<< " " << cur
[i
] << " | ";
1084 if (i
< cur
.anchor_
.depth())
1085 os
<< cur
.anchor_
[i
];
1087 os
<< "-------------------------------";
1090 for (size_t i
= cur
.depth(), n
= cur
.anchor_
.depth(); i
< n
; ++i
) {
1091 os
<< "------------------------------- | " << cur
.anchor_
[i
] << "\n";
1093 os
<< " selection: " << cur
.selection_
1094 << " x_target: " << cur
.x_target_
<< endl
;
1099 LyXErr
& operator<<(LyXErr
& os
, Cursor
const & cur
)
1109 ///////////////////////////////////////////////////////////////////
1112 // The part below is the non-integrated rest of the original math
1113 // cursor. This should be either generalized for texted or moved
1114 // back to mathed (in most cases to InsetMathNest).
1116 ///////////////////////////////////////////////////////////////////
1118 #include "mathed/InsetMathChar.h"
1119 #include "mathed/InsetMathGrid.h"
1120 #include "mathed/InsetMathScript.h"
1121 #include "mathed/InsetMathUnknown.h"
1122 #include "mathed/MathFactory.h"
1123 #include "mathed/MathStream.h"
1124 #include "mathed/MathSupport.h"
1129 //#define FILEDEBUG 1
1132 bool Cursor::isInside(Inset
const * p
) const
1134 for (size_t i
= 0; i
!= depth(); ++i
)
1135 if (&operator[](i
).inset() == p
)
1141 void Cursor::leaveInset(Inset
const & inset
)
1143 for (size_t i
= 0; i
!= depth(); ++i
) {
1144 if (&operator[](i
).inset() == &inset
) {
1152 bool Cursor::openable(MathAtom
const & t
) const
1163 // we can't move into anything new during selection
1164 if (depth() >= anchor_
.depth())
1166 if (t
.nucleus() != &anchor_
[depth()].inset())
1173 void Cursor::setScreenPos(int x
, int /*y*/)
1176 //bruteFind(*this, x, y, 0, bv().workWidth(), 0, bv().workHeight());
1181 void Cursor::plainErase()
1183 cell().erase(pos());
1187 void Cursor::markInsert()
1189 insert(char_type(0));
1193 void Cursor::markErase()
1195 cell().erase(pos());
1199 void Cursor::plainInsert(MathAtom
const & t
)
1201 cell().insert(pos(), t
);
1203 inset().setBuffer(bv_
->buffer());
1208 void Cursor::insert(docstring
const & str
)
1210 for_each(str
.begin(), str
.end(),
1211 boost::bind(static_cast<void(Cursor::*)(char_type
)>
1212 (&Cursor::insert
), this, _1
));
1216 void Cursor::insert(char_type c
)
1218 //lyxerr << "Cursor::insert char '" << c << "'" << endl;
1219 LASSERT(!empty(), /**/);
1221 cap::selClearOrDel(*this);
1222 insert(new InsetMathChar(c
));
1224 text()->insertChar(*this, c
);
1229 void Cursor::insert(MathAtom
const & t
)
1231 //lyxerr << "Cursor::insert MathAtom '" << t << "'" << endl;
1233 cap::selClearOrDel(*this);
1238 void Cursor::insert(Inset
* inset0
)
1240 LASSERT(inset0
, /**/);
1242 insert(MathAtom(inset0
));
1244 text()->insertInset(*this, inset0
);
1245 inset0
->setBuffer(bv_
->buffer());
1251 void Cursor::niceInsert(docstring
const & t
, Parse::flags f
)
1262 void Cursor::niceInsert(MathAtom
const & t
)
1265 docstring
const safe
= cap::grabAndEraseSelection(*this);
1267 // enter the new inset and move the contents of the selection if possible
1268 if (t
->isActive()) {
1270 // be careful here: don't use 'pushBackward(t)' as this we need to
1271 // push the clone, not the original
1272 pushBackward(*nextInset());
1273 // We may not use niceInsert here (recursion)
1281 void Cursor::insert(MathData
const & ar
)
1285 cap::eraseSelection(*this);
1286 cell().insert(pos(), ar
);
1291 bool Cursor::backspace()
1293 autocorrect() = false;
1296 cap::eraseSelection(*this);
1301 // If empty cell, and not part of a big cell
1302 if (lastpos() == 0 && inset().nargs() == 1) {
1304 // Directly delete empty cell: [|[]] => [|]
1310 // [|], can not delete from inside
1321 if (inMacroMode()) {
1322 InsetMathUnknown
* p
= activeMacro();
1323 if (p
->name().size() > 1) {
1324 p
->setName(p
->name().substr(0, p
->name().size() - 1));
1329 if (pos() != 0 && prevAtom()->nargs() > 0) {
1330 // let's require two backspaces for 'big stuff' and
1331 // highlight on the first
1343 bool Cursor::erase()
1345 autocorrect() = false;
1350 cap::eraseSelection(*this);
1354 // delete empty cells if possible
1355 if (pos() == lastpos() && inset().idxDelete(idx()))
1358 // special behaviour when in last position of cell
1359 if (pos() == lastpos()) {
1360 bool one_cell
= inset().nargs() == 1;
1361 if (one_cell
&& lastpos() == 0) {
1363 // Directly delete empty cell: [|[]] => [|]
1369 // [|], can not delete from inside
1374 inset().idxGlue(idx());
1378 // 'clever' UI hack: only erase large items if previously slected
1379 if (pos() != lastpos() && nextAtom()->nargs() > 0) {
1394 DocIterator save
= *this;
1395 FuncRequest
cmd(selection() ? LFUN_UP_SELECT
: LFUN_UP
, docstring());
1396 this->dispatch(cmd
);
1397 if (disp_
.dispatched())
1400 autocorrect() = false;
1408 DocIterator save
= *this;
1409 FuncRequest
cmd(selection() ? LFUN_DOWN_SELECT
: LFUN_DOWN
, docstring());
1410 this->dispatch(cmd
);
1411 if (disp_
.dispatched())
1414 autocorrect() = false;
1419 bool Cursor::macroModeClose()
1423 InsetMathUnknown
* p
= activeMacro();
1426 // enclose selection in braces (bug #6270)
1427 asArray('{' + p
->selection() + '}', selection
);
1428 docstring
const s
= p
->name();
1430 cell().erase(pos());
1432 // do nothing if the macro name is empty
1436 // trigger updates of macros, at least, if no full
1437 // updates take place anyway
1438 updateFlags(Update::Force
);
1440 docstring
const name
= s
.substr(1);
1441 InsetMathNest
* const in
= inset().asInsetMath()->asNestInset();
1442 if (in
&& in
->interpretString(*this, s
))
1444 MathAtom atom
= createInsetMath(name
);
1446 // try to put argument into macro, if we just inserted a macro
1447 bool macroArg
= false;
1448 MathMacro
* atomAsMacro
= atom
.nucleus()->asMacro();
1450 // macros here are still unfolded (in init mode in fact). So
1451 // we have to resolve the macro here manually and check its arity
1452 // to put the selection behind it if arity > 0.
1453 MacroData
const * data
= buffer()->getMacro(atomAsMacro
->name());
1454 if (selection
.size() > 0 && data
&& data
->numargs() - data
->optionals() > 0) {
1456 atomAsMacro
->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT
, 1);
1458 // non-greedy case. Do not touch the arguments behind
1459 atomAsMacro
->setDisplayMode(MathMacro::DISPLAY_INTERACTIVE_INIT
, 0);
1462 // insert remembered selection into first argument of a non-macro
1463 else if (atom
.nucleus()->nargs() > 0)
1464 atom
.nucleus()->cell(0).append(selection
);
1468 // finally put the macro argument behind, if needed
1470 if (selection
.size() > 1)
1471 plainInsert(MathAtom(new InsetMathBrace(selection
)));
1480 docstring
Cursor::macroName()
1482 return inMacroMode() ? activeMacro()->name() : docstring();
1486 void Cursor::handleNest(MathAtom
const & a
, int c
)
1488 //lyxerr << "Cursor::handleNest: " << c << endl;
1490 asArray(cap::grabAndEraseSelection(*this), t
.nucleus()->cell(c
));
1493 pushBackward(*nextInset());
1497 int Cursor::targetX() const
1499 if (x_target() != -1)
1508 int Cursor::textTargetOffset() const
1510 return textTargetOffset_
;
1514 void Cursor::setTargetX()
1523 bool Cursor::inMacroMode() const
1529 InsetMathUnknown
const * p
= prevAtom()->asUnknownInset();
1530 return p
&& !p
->final();
1534 InsetMathUnknown
* Cursor::activeMacro()
1536 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1540 InsetMathUnknown
const * Cursor::activeMacro() const
1542 return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
1546 void Cursor::pullArg()
1549 MathData ar
= cell();
1550 if (popBackward() && inMathed()) {
1552 cell().insert(pos(), ar
);
1555 //formula()->mutateToText();
1560 void Cursor::touch()
1564 DocIterator::const_iterator it
= begin();
1565 DocIterator::const_iterator et
= end();
1566 for ( ; it
!= et
; ++it
)
1572 void Cursor::normalize()
1574 if (idx() > lastidx()) {
1575 lyxerr
<< "this should not really happen - 1: "
1576 << idx() << ' ' << nargs()
1577 << " in: " << &inset() << endl
;
1581 if (pos() > lastpos()) {
1582 lyxerr
<< "this should not really happen - 2: "
1583 << pos() << ' ' << lastpos() << " in idx: " << idx()
1585 odocstringstream os
;
1586 WriteStream
wi(os
, false, true, WriteStream::wsDefault
);
1587 inset().asInsetMath()->write(wi
);
1588 lyxerr
<< to_utf8(os
.str()) << endl
;
1594 bool Cursor::upDownInMath(bool up
)
1596 // Be warned: The 'logic' implemented in this function is highly
1597 // fragile. A distance of one pixel or a '<' vs '<=' _really
1598 // matters. So fiddle around with it only if you think you know
1599 // what you are doing!
1603 xo
= theLyXFunc().cursorBeforeDispatchX();
1605 // check if we had something else in mind, if not, this is the future
1607 if (x_target_
== -1)
1609 else if (inset().asInsetText() && xo
- textTargetOffset() != x_target()) {
1610 // In text mode inside the line (not left or right) possibly set a new target_x,
1611 // but only if we are somewhere else than the previous target-offset.
1613 // We want to keep the x-target on subsequent up/down movements
1614 // that cross beyond the end of short lines. Thus a special
1615 // handling when the cursor is at the end of line: Use the new
1616 // x-target only if the old one was before the end of line
1617 // or the old one was after the beginning of the line
1618 bool inRTL
= isWithinRtlParagraph(*this);
1622 left
= pos() == textRow().endpos();
1623 right
= pos() == textRow().pos();
1625 left
= pos() == textRow().pos();
1626 right
= pos() == textRow().endpos();
1628 if ((!left
&& !right
) ||
1629 (left
&& !right
&& xo
< x_target_
) ||
1630 (!left
&& right
&& x_target_
< xo
))
1637 // try neigbouring script insets
1639 if (inMathed() && !selection()) {
1642 InsetMathScript
const * p
= prevAtom()->asScriptInset();
1643 if (p
&& p
->has(up
)) {
1645 push(*const_cast<InsetMathScript
*>(p
));
1646 idx() = p
->idxOfScript(up
);
1649 // we went in the right direction? Otherwise don't jump into the script
1653 int oy
= theLyXFunc().cursorBeforeDispatchY();
1654 if ((!up
&& y
<= oy
) ||
1663 if (pos() != lastpos()) {
1664 InsetMathScript
const * p
= nextAtom()->asScriptInset();
1665 if (p
&& p
->has(up
)) {
1666 push(*const_cast<InsetMathScript
*>(p
));
1667 idx() = p
->idxOfScript(up
);
1670 // we went in the right direction? Otherwise don't jump into the script
1674 int oy
= theLyXFunc().cursorBeforeDispatchY();
1675 if ((!up
&& y
<= oy
) ||
1684 // try to find an inset that knows better then we,
1685 if (inset().idxUpDown(*this, up
)) {
1686 //lyxerr << "idxUpDown triggered" << endl;
1687 // try to find best position within this inset
1689 setCursor(bruteFind2(*this, xo
, yo
));
1693 // any improvement going just out of inset?
1694 if (popBackward() && inMathed()) {
1695 //lyxerr << "updown: popBackward succeeded" << endl;
1698 int yold
= theLyXFunc().cursorBeforeDispatchY();
1700 if (up
? ynew
< yold
: ynew
> yold
)
1704 // no success, we are probably at the document top or bottom
1710 bool Cursor::atFirstOrLastRow(bool up
)
1712 TextMetrics
const & tm
= bv_
->textMetrics(text());
1713 ParagraphMetrics
const & pm
= tm
.parMetrics(pit());
1716 if (pos() && boundary())
1717 row
= pm
.pos2row(pos() - 1);
1719 row
= pm
.pos2row(pos());
1722 if (pit() == 0 && row
== 0)
1725 if (pit() + 1 >= int(text()->paragraphs().size()) &&
1726 row
+ 1 >= int(pm
.rows().size()))
1732 bool Cursor::upDownInText(bool up
, bool & updateNeeded
)
1734 LASSERT(text(), /**/);
1740 xo
= theLyXFunc().cursorBeforeDispatchX();
1742 // update the targetX - this is here before the "return false"
1743 // to set a new target which can be used by InsetTexts above
1744 // if we cannot move up/down inside this inset anymore
1745 if (x_target_
== -1)
1747 else if (xo
- textTargetOffset() != x_target() &&
1748 depth() == beforeDispatchCursor_
.depth()) {
1749 // In text mode inside the line (not left or right) possibly set a new target_x,
1750 // but only if we are somewhere else than the previous target-offset.
1752 // We want to keep the x-target on subsequent up/down movements
1753 // that cross beyond the end of short lines. Thus a special
1754 // handling when the cursor is at the end of line: Use the new
1755 // x-target only if the old one was before the end of line
1756 // or the old one was after the beginning of the line
1757 bool inRTL
= isWithinRtlParagraph(*this);
1761 left
= pos() == textRow().endpos();
1762 right
= pos() == textRow().pos();
1764 left
= pos() == textRow().pos();
1765 right
= pos() == textRow().endpos();
1767 if ((!left
&& !right
) ||
1768 (left
&& !right
&& xo
< x_target_
) ||
1769 (!left
&& right
&& x_target_
< xo
))
1776 // first get the current line
1777 TextMetrics
& tm
= bv_
->textMetrics(text());
1778 ParagraphMetrics
const & pm
= tm
.parMetrics(pit());
1780 if (pos() && boundary())
1781 row
= pm
.pos2row(pos() - 1);
1783 row
= pm
.pos2row(pos());
1785 if (atFirstOrLastRow(up
)) {
1786 // Is there a place for the cursor to go ? If yes, we
1787 // can execute the DEPM, otherwise we should keep the
1788 // paragraph to host the cursor.
1789 Cursor dummy
= *this;
1790 bool valid_destination
= false;
1791 for(; dummy
.depth(); dummy
.pop())
1792 if (!dummy
.atFirstOrLastRow(up
)) {
1793 valid_destination
= true;
1797 // will a next dispatch follow and if there is a new
1798 // dispatch will it move the cursor out ?
1799 if (depth() > 1 && valid_destination
) {
1800 // The cursor hasn't changed yet. This happens when
1801 // you e.g. move out of an inset. And to give the
1802 // DEPM the possibility of doing something we must
1803 // provide it with two different cursors. (Lgb, vfr)
1805 dummy
.pos() = dummy
.pos() == 0 ? dummy
.lastpos() : 0;
1806 dummy
.pit() = dummy
.pit() == 0 ? dummy
.lastpit() : 0;
1808 updateNeeded
|= bv().checkDepm(dummy
, *this);
1809 updateTextTargetOffset();
1814 // with and without selection are handled differently
1816 int yo
= bv().getPos(*this, boundary()).y_
;
1818 // To next/previous row
1820 tm
.editXY(*this, xo
, yo
- textRow().ascent() - 1);
1822 tm
.editXY(*this, xo
, yo
+ textRow().descent() + 1);
1825 // This happens when you move out of an inset.
1826 // And to give the DEPM the possibility of doing
1827 // something we must provide it with two different
1829 Cursor dummy
= *this;
1832 if (bv().checkDepm(dummy
, old
)) {
1833 updateNeeded
= true;
1834 // Make sure that cur gets back whatever happened to dummy(Lgb)
1838 // if there is a selection, we stay out of any inset, and just jump to the right position:
1842 top().pos() = min(tm
.x2pos(pit(), row
- 1, xo
), top().lastpos());
1843 } else if (pit() > 0) {
1845 TextMetrics
& tm
= bv_
->textMetrics(text());
1846 if (!tm
.contains(pit()))
1847 tm
.newParMetricsUp();
1848 ParagraphMetrics
const & pmcur
= tm
.parMetrics(pit());
1849 top().pos() = min(tm
.x2pos(pit(), pmcur
.rows().size() - 1, xo
), top().lastpos());
1852 if (row
+ 1 < int(pm
.rows().size())) {
1853 top().pos() = min(tm
.x2pos(pit(), row
+ 1, xo
), top().lastpos());
1854 } else if (pit() + 1 < int(text()->paragraphs().size())) {
1856 TextMetrics
& tm
= bv_
->textMetrics(text());
1857 if (!tm
.contains(pit()))
1858 tm
.newParMetricsDown();
1859 top().pos() = min(tm
.x2pos(pit(), 0, xo
), top().lastpos());
1863 updateNeeded
|= bv().checkDepm(*this, old
);
1866 updateTextTargetOffset();
1871 void Cursor::handleFont(string
const & font
)
1873 LYXERR(Debug::DEBUG
, font
);
1877 safe
= cap::grabAndEraseSelection(*this);
1882 if (lastpos() != 0) {
1883 // something left in the cell
1885 // cursor in first position
1887 } else if (pos() == lastpos()) {
1888 // cursor in last position
1891 // cursor in between. split cell
1892 MathData::iterator bt
= cell().begin();
1893 MathAtom at
= createInsetMath(from_utf8(font
));
1894 at
.nucleus()->cell(0) = MathData(bt
, bt
+ pos());
1895 cell().erase(bt
, bt
+ pos());
1900 // nothing left in the cell
1909 void Cursor::message(docstring
const & msg
) const
1911 theLyXFunc().setMessage(msg
);
1915 void Cursor::errorMessage(docstring
const & msg
) const
1917 theLyXFunc().setErrorMessage(msg
);
1921 static docstring
parbreak(InsetCode code
)
1923 odocstringstream os
;
1925 // only add blank line if we're not in an ERT or Listings inset
1926 if (code
!= ERT_CODE
&& code
!= LISTINGS_CODE
)
1932 docstring
Cursor::selectionAsString(bool with_label
) const
1938 return cap::grabSelection(*this);
1940 int const label
= with_label
1941 ? AS_STR_LABEL
| AS_STR_INSETS
: AS_STR_INSETS
;
1943 idx_type
const startidx
= selBegin().idx();
1944 idx_type
const endidx
= selEnd().idx();
1945 if (startidx
!= endidx
) {
1946 // multicell selection
1947 InsetTabular
* table
= inset().asInsetTabular();
1948 LASSERT(table
, return docstring());
1949 return table
->asString(startidx
, endidx
);
1952 ParagraphList
const & pars
= text()->paragraphs();
1954 pit_type
const startpit
= selBegin().pit();
1955 pit_type
const endpit
= selEnd().pit();
1956 size_t const startpos
= selBegin().pos();
1957 size_t const endpos
= selEnd().pos();
1959 if (startpit
== endpit
)
1960 return pars
[startpit
].asString(startpos
, endpos
, label
);
1962 // First paragraph in selection
1963 docstring result
= pars
[startpit
].
1964 asString(startpos
, pars
[startpit
].size(), label
)
1965 + parbreak(inset().lyxCode());
1967 // The paragraphs in between (if any)
1968 for (pit_type pit
= startpit
+ 1; pit
!= endpit
; ++pit
) {
1969 Paragraph
const & par
= pars
[pit
];
1970 result
+= par
.asString(0, par
.size(), label
)
1971 + parbreak(inset().lyxCode());
1974 // Last paragraph in selection
1975 result
+= pars
[endpit
].asString(0, endpos
, label
);
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(), text
.outerFont(sl
.pit()));
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 text
.outerFont(sl
.pit()));
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);