3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Asger Alstrup
7 * \author Lars Gullik Bjønnes
8 * \author Alfredo Braunstein
9 * \author Jean-Marc Lasgouttes
10 * \author Angus Leeming
12 * \author André Pönitz
14 * \author Stefan Schimanski
16 * \author Jürgen Vigna
18 * Full author contact details are available in file CREDITS.
27 #include "buffer_funcs.h"
28 #include "BufferList.h"
29 #include "BufferParams.h"
30 #include "BufferView.h"
33 #include "CutAndPaste.h"
34 #include "DispatchResult.h"
35 #include "ErrorList.h"
36 #include "FuncRequest.h"
42 #include "Paragraph.h"
43 #include "paragraph_funcs.h"
44 #include "ParagraphParameters.h"
45 #include "TextClass.h"
46 #include "TextMetrics.h"
49 #include "insets/InsetEnvironment.h"
51 #include "mathed/InsetMathHull.h"
53 #include "support/debug.h"
54 #include "support/gettext.h"
55 #include "support/textutils.h"
57 #include <boost/next_prior.hpp>
66 : autoBreakRows_(false)
70 bool Text::isMainText(Buffer const & buffer) const
72 return &buffer.text() == this;
76 FontInfo Text::getLayoutFont(Buffer const & buffer, pit_type const pit) const
78 LayoutPtr const & layout = pars_[pit].layout();
80 if (!pars_[pit].getDepth()) {
81 FontInfo lf = layout->resfont;
82 // In case the default family has been customized
83 if (layout->font.family() == INHERIT_FAMILY)
84 lf.setFamily(buffer.params().getFont().fontInfo().family());
88 FontInfo font = layout->font;
89 // Realize with the fonts of lesser depth.
90 //font.realize(outerFont(pit, paragraphs()));
91 font.realize(buffer.params().getFont().fontInfo());
97 FontInfo Text::getLabelFont(Buffer const & buffer, Paragraph const & par) const
99 LayoutPtr const & layout = par.layout();
101 if (!par.getDepth()) {
102 FontInfo lf = layout->reslabelfont;
103 // In case the default family has been customized
104 if (layout->labelfont.family() == INHERIT_FAMILY)
105 lf.setFamily(buffer.params().getFont().fontInfo().family());
109 FontInfo font = layout->labelfont;
110 // Realize with the fonts of lesser depth.
111 font.realize(buffer.params().getFont().fontInfo());
117 void Text::setCharFont(Buffer const & buffer, pit_type pit,
118 pos_type pos, Font const & fnt, Font const & display_font)
121 LayoutPtr const & layout = pars_[pit].layout();
123 // Get concrete layout font to reduce against
126 if (pos < pars_[pit].beginOfBody())
127 layoutfont = layout->labelfont;
129 layoutfont = layout->font;
131 // Realize against environment font information
132 if (pars_[pit].getDepth()) {
134 while (!layoutfont.resolved() &&
135 tp != pit_type(paragraphs().size()) &&
136 pars_[tp].getDepth()) {
137 tp = outerHook(tp, paragraphs());
138 if (tp != pit_type(paragraphs().size()))
139 layoutfont.realize(pars_[tp].layout()->font);
143 // Inside inset, apply the inset's font attributes if any
145 if (!isMainText(buffer))
146 layoutfont.realize(display_font.fontInfo());
148 layoutfont.realize(buffer.params().getFont().fontInfo());
150 // Now, reduce font against full layout font
151 font.fontInfo().reduce(layoutfont);
153 pars_[pit].setFont(pos, font);
157 void Text::setInsetFont(BufferView const & bv, pit_type pit,
158 pos_type pos, Font const & font, bool toggleall)
160 Inset * const inset = pars_[pit].getInset(pos);
161 BOOST_ASSERT(inset && inset->noFontChange());
163 CursorSlice::idx_type endidx = inset->nargs();
164 for (CursorSlice cs(*inset); cs.idx() != endidx; ++cs.idx()) {
165 Text * text = cs.text();
167 // last position of the cell
168 CursorSlice cellend = cs;
169 cellend.pit() = cellend.lastpit();
170 cellend.pos() = cellend.lastpos();
171 text->setFont(bv, cs, cellend, font, toggleall);
177 // return past-the-last paragraph influenced by a layout change on pit
178 pit_type Text::undoSpan(pit_type pit)
180 pit_type end = paragraphs().size();
181 pit_type nextpit = pit + 1;
184 //because of parindents
185 if (!pars_[pit].getDepth())
186 return boost::next(nextpit);
187 //because of depth constrains
188 for (; nextpit != end; ++pit, ++nextpit) {
189 if (!pars_[pit].getDepth())
196 void Text::setLayout(Buffer const & buffer, pit_type start, pit_type end,
197 docstring const & layout)
199 BOOST_ASSERT(start != end);
201 BufferParams const & bufparams = buffer.params();
202 LayoutPtr const & lyxlayout = bufparams.getTextClass()[layout];
204 for (pit_type pit = start; pit != end; ++pit) {
205 Paragraph & par = pars_[pit];
206 par.applyLayout(lyxlayout);
207 if (lyxlayout->margintype == MARGIN_MANUAL)
208 par.setLabelWidthString(par.translateIfPossible(
209 lyxlayout->labelstring(), buffer.params()));
214 // set layout over selection and make a total rebreak of those paragraphs
215 void Text::setLayout(Cursor & cur, docstring const & layout)
217 BOOST_ASSERT(this == cur.text());
218 // special handling of new environment insets
219 BufferView & bv = cur.bv();
220 BufferParams const & params = bv.buffer().params();
221 LayoutPtr const & lyxlayout = params.getTextClass()[layout];
222 if (lyxlayout->is_environment) {
223 // move everything in a new environment inset
224 LYXERR(Debug::DEBUG, "setting layout " << to_utf8(layout));
225 lyx::dispatch(FuncRequest(LFUN_LINE_BEGIN));
226 lyx::dispatch(FuncRequest(LFUN_LINE_END_SELECT));
227 lyx::dispatch(FuncRequest(LFUN_CUT));
228 Inset * inset = new InsetEnvironment(params, layout);
229 insertInset(cur, inset);
230 //inset->edit(cur, true);
231 //lyx::dispatch(FuncRequest(LFUN_PASTE));
235 pit_type start = cur.selBegin().pit();
236 pit_type end = cur.selEnd().pit() + 1;
237 pit_type undopit = undoSpan(end - 1);
238 recUndo(cur, start, undopit - 1);
239 setLayout(cur.buffer(), start, end, layout);
240 updateLabels(cur.buffer());
244 static bool changeDepthAllowed(Text::DEPTH_CHANGE type,
245 Paragraph const & par, int max_depth)
247 if (par.layout()->labeltype == LABEL_BIBLIO)
249 int const depth = par.params().depth();
250 if (type == Text::INC_DEPTH && depth < max_depth)
252 if (type == Text::DEC_DEPTH && depth > 0)
258 bool Text::changeDepthAllowed(Cursor & cur, DEPTH_CHANGE type) const
260 BOOST_ASSERT(this == cur.text());
261 // this happens when selecting several cells in tabular (bug 2630)
262 if (cur.selBegin().idx() != cur.selEnd().idx())
265 pit_type const beg = cur.selBegin().pit();
266 pit_type const end = cur.selEnd().pit() + 1;
267 int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
269 for (pit_type pit = beg; pit != end; ++pit) {
270 if (lyx::changeDepthAllowed(type, pars_[pit], max_depth))
272 max_depth = pars_[pit].getMaxDepthAfter();
278 void Text::changeDepth(Cursor & cur, DEPTH_CHANGE type)
280 BOOST_ASSERT(this == cur.text());
281 pit_type const beg = cur.selBegin().pit();
282 pit_type const end = cur.selEnd().pit() + 1;
283 cur.recordUndoSelection();
284 int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
286 for (pit_type pit = beg; pit != end; ++pit) {
287 Paragraph & par = pars_[pit];
288 if (lyx::changeDepthAllowed(type, par, max_depth)) {
289 int const depth = par.params().depth();
290 if (type == INC_DEPTH)
291 par.params().depth(depth + 1);
293 par.params().depth(depth - 1);
295 max_depth = par.getMaxDepthAfter();
297 // this handles the counter labels, and also fixes up
298 // depth values for follow-on (child) paragraphs
299 updateLabels(cur.buffer());
303 void Text::setFont(Cursor & cur, Font const & font, bool toggleall)
305 BOOST_ASSERT(this == cur.text());
306 // Set the current_font
307 // Determine basis font
309 pit_type pit = cur.pit();
310 if (cur.pos() < pars_[pit].beginOfBody())
311 layoutfont = getLabelFont(cur.buffer(), pars_[pit]);
313 layoutfont = getLayoutFont(cur.buffer(), pit);
315 // Update current font
316 cur.real_current_font.update(font,
317 cur.buffer().params().language,
320 // Reduce to implicit settings
321 cur.current_font = cur.real_current_font;
322 cur.current_font.fontInfo().reduce(layoutfont);
323 // And resolve it completely
324 cur.real_current_font.fontInfo().realize(layoutfont);
326 // if there is no selection that's all we need to do
327 if (!cur.selection())
330 // Ok, we have a selection.
331 cur.recordUndoSelection();
333 setFont(cur.bv(), cur.selectionBegin().top(),
334 cur.selectionEnd().top(), font, toggleall);
338 void Text::setFont(BufferView const & bv, CursorSlice const & begin,
339 CursorSlice const & end, Font const & font,
342 Buffer const & buffer = bv.buffer();
344 // Don't use forwardChar here as ditend might have
345 // pos() == lastpos() and forwardChar would miss it.
346 // Can't use forwardPos either as this descends into
348 Language const * language = buffer.params().language;
349 for (CursorSlice dit = begin; dit != end; dit.forwardPos()) {
350 if (dit.pos() == dit.lastpos())
352 pit_type const pit = dit.pit();
353 pos_type const pos = dit.pos();
354 Inset * inset = pars_[pit].getInset(pos);
355 if (inset && inset->noFontChange()) {
356 // We need to propagate the font change to all
357 // text cells of the inset (bug 1973).
358 // FIXME: This should change, see documentation
359 // of noFontChange in Inset.h
360 setInsetFont(bv, pit, pos, font, toggleall);
362 TextMetrics const & tm = bv.textMetrics(this);
363 Font f = tm.getDisplayFont(pit, pos);
364 f.update(font, language, toggleall);
365 setCharFont(buffer, pit, pos, f, tm.font_);
370 bool Text::cursorTop(Cursor & cur)
372 BOOST_ASSERT(this == cur.text());
373 return setCursor(cur, 0, 0);
377 bool Text::cursorBottom(Cursor & cur)
379 BOOST_ASSERT(this == cur.text());
380 return setCursor(cur, cur.lastpit(), boost::prior(paragraphs().end())->size());
384 void Text::toggleFree(Cursor & cur, Font const & font, bool toggleall)
386 BOOST_ASSERT(this == cur.text());
387 // If the mask is completely neutral, tell user
388 if (font.fontInfo() == ignore_font &&
389 (font.language() == 0 || font.language() == ignore_language)) {
390 // Could only happen with user style
391 cur.message(_("No font change defined."));
395 // Try implicit word selection
396 // If there is a change in the language the implicit word selection
398 CursorSlice resetCursor = cur.top();
399 bool implicitSelection =
400 font.language() == ignore_language
401 && font.fontInfo().number() == FONT_IGNORE
402 && selectWordWhenUnderCursor(cur, WHOLE_WORD_STRICT);
405 setFont(cur, font, toggleall);
407 // Implicit selections are cleared afterwards
408 // and cursor is set to the original position.
409 if (implicitSelection) {
410 cur.clearSelection();
411 cur.top() = resetCursor;
417 docstring Text::getStringToIndex(Cursor const & cur)
419 BOOST_ASSERT(this == cur.text());
422 return cur.selectionAsString(false);
424 // Try implicit word selection. If there is a change
425 // in the language the implicit word selection is
428 selectWord(tmpcur, PREVIOUS_WORD);
430 if (!tmpcur.selection())
431 cur.message(_("Nothing to index!"));
432 else if (tmpcur.selBegin().pit() != tmpcur.selEnd().pit())
433 cur.message(_("Cannot index more than one paragraph!"));
435 return tmpcur.selectionAsString(false);
441 void Text::setParagraphs(Cursor & cur, docstring arg, bool merge)
443 BOOST_ASSERT(cur.text());
444 // make sure that the depth behind the selection are restored, too
445 pit_type undopit = undoSpan(cur.selEnd().pit());
446 recUndo(cur, cur.selBegin().pit(), undopit - 1);
449 string const argument = to_utf8(arg);
450 for (pit_type pit = cur.selBegin().pit(), end = cur.selEnd().pit();
452 Paragraph & par = pars_[pit];
453 ParagraphParameters params = par.params();
454 params.read(argument, merge);
455 par.params().apply(params, *par.layout());
460 //FIXME This is a little redundant now, but it's probably worth keeping,
461 //especially if we're going to go away from using serialization internally
463 void Text::setParagraphs(Cursor & cur, ParagraphParameters const & p)
465 BOOST_ASSERT(cur.text());
466 // make sure that the depth behind the selection are restored, too
467 pit_type undopit = undoSpan(cur.selEnd().pit());
468 recUndo(cur, cur.selBegin().pit(), undopit - 1);
470 for (pit_type pit = cur.selBegin().pit(), end = cur.selEnd().pit();
472 Paragraph & par = pars_[pit];
473 Layout const & layout = *(par.layout());
474 par.params().apply(p, layout);
479 // this really should just insert the inset and not move the cursor.
480 void Text::insertInset(Cursor & cur, Inset * inset)
482 BOOST_ASSERT(this == cur.text());
484 cur.paragraph().insertInset(cur.pos(), inset, cur.current_font,
485 Change(cur.buffer().params().trackChanges
486 ? Change::INSERTED : Change::UNCHANGED));
490 // needed to insert the selection
491 void Text::insertStringAsLines(Cursor & cur, docstring const & str)
493 cur.buffer().insertStringAsLines(pars_, cur.pit(), cur.pos(),
494 cur.current_font, str, autoBreakRows_);
498 // turn double CR to single CR, others are converted into one
499 // blank. Then insertStringAsLines is called
500 void Text::insertStringAsParagraphs(Cursor & cur, docstring const & str)
502 docstring linestr = str;
503 bool newline_inserted = false;
505 for (string::size_type i = 0, siz = linestr.size(); i < siz; ++i) {
506 if (linestr[i] == '\n') {
507 if (newline_inserted) {
508 // we know that \r will be ignored by
509 // insertStringAsLines. Of course, it is a dirty
510 // trick, but it works...
511 linestr[i - 1] = '\r';
515 newline_inserted = true;
517 } else if (isPrintable(linestr[i])) {
518 newline_inserted = false;
521 insertStringAsLines(cur, linestr);
525 bool Text::setCursor(Cursor & cur, pit_type par, pos_type pos,
526 bool setfont, bool boundary)
528 TextMetrics const & tm = cur.bv().textMetrics(this);
529 bool const update_needed = !tm.has(par);
531 setCursorIntern(cur, par, pos, setfont, boundary);
532 return cur.bv().checkDepm(cur, old) || update_needed;
536 void Text::setCursor(CursorSlice & cur, pit_type par, pos_type pos)
538 BOOST_ASSERT(par != int(paragraphs().size()));
542 // now some strict checking
543 Paragraph & para = getPar(par);
545 // None of these should happen, but we're scaredy-cats
547 lyxerr << "dont like -1" << endl;
551 if (pos > para.size()) {
552 lyxerr << "dont like 1, pos: " << pos
553 << " size: " << para.size()
554 << " par: " << par << endl;
560 void Text::setCursorIntern(Cursor & cur,
561 pit_type par, pos_type pos, bool setfont, bool boundary)
563 BOOST_ASSERT(this == cur.text());
564 cur.boundary(boundary);
565 setCursor(cur.top(), par, pos);
567 cur.setCurrentFont();
571 bool Text::checkAndActivateInset(Cursor & cur, bool front)
575 if (front && cur.pos() == cur.lastpos())
577 if (!front && cur.pos() == 0)
579 Inset * inset = front ? cur.nextInset() : cur.prevInset();
580 if (!inset || inset->editable() != Inset::HIGHLY_EDITABLE)
583 * Apparently, when entering an inset we are expected to be positioned
584 * *before* it in the containing paragraph, regardless of the direction
585 * from which we are entering. Otherwise, cursor placement goes awry,
586 * and when we exit from the beginning, we'll be placed *after* the
591 inset->edit(cur, front);
596 bool Text::checkAndActivateInsetVisual(Cursor & cur, bool movingForward, bool movingLeft)
602 if (cur.pos() == cur.lastpos())
604 Paragraph & par = cur.paragraph();
605 Inset * inset = par.isInset(cur.pos()) ? par.getInset(cur.pos()) : 0;
606 if (!inset || inset->editable() != Inset::HIGHLY_EDITABLE)
608 inset->edit(cur, movingForward,
609 movingLeft ? Inset::ENTRY_DIRECTION_RIGHT : Inset::ENTRY_DIRECTION_LEFT);
614 bool Text::cursorBackward(Cursor & cur)
616 // Tell BufferView to test for FitCursor in any case!
617 cur.updateFlags(Update::FitCursor);
619 // not at paragraph start?
621 // if on right side of boundary (i.e. not at paragraph end, but line end)
622 // -> skip it, i.e. set boundary to true, i.e. go only logically left
623 // there are some exceptions to ignore this: lineseps, newlines, spaces
625 // some effectless debug code to see the values in the debugger
626 bool bound = cur.boundary();
627 int rowpos = cur.textRow().pos();
629 bool sep = cur.paragraph().isSeparator(cur.pos() - 1);
630 bool newline = cur.paragraph().isNewline(cur.pos() - 1);
631 bool linesep = cur.paragraph().isLineSeparator(cur.pos() - 1);
633 if (!cur.boundary() &&
634 cur.textRow().pos() == cur.pos() &&
635 !cur.paragraph().isLineSeparator(cur.pos() - 1) &&
636 !cur.paragraph().isNewline(cur.pos() - 1) &&
637 !cur.paragraph().isSeparator(cur.pos() - 1)) {
638 return setCursor(cur, cur.pit(), cur.pos(), true, true);
641 // go left and try to enter inset
642 if (checkAndActivateInset(cur, false))
645 // normal character left
646 return setCursor(cur, cur.pit(), cur.pos() - 1, true, false);
649 // move to the previous paragraph or do nothing
651 return setCursor(cur, cur.pit() - 1, getPar(cur.pit() - 1).size(), true, false);
656 bool Text::cursorVisLeft(Cursor & cur, bool skip_inset)
658 pit_type new_pit = cur.pit(); // the paragraph to which we will move
659 pos_type new_pos; // the position we will move to
660 bool new_boundary; // will we move to a boundary position?
661 pos_type left_pos; // position visually left of current cursor
662 pos_type right_pos; // position visually right of current cursor
663 bool new_pos_is_RTL; // is new position we're moving to RTL?
665 cur.getSurroundingPos(left_pos, right_pos);
667 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<<cur.pos()<<")");
669 // Are we at an inset?
670 Cursor temp_cur = cur;
671 temp_cur.pos() = left_pos;
672 temp_cur.boundary(false);
674 checkAndActivateInsetVisual(temp_cur, left_pos >= cur.pos(), true)) {
675 LYXERR(Debug::RTL, "entering inset at: " << temp_cur.pos());
676 cur = temp_cur; // set the real cursor to new position inside inset!
680 // Are we already at leftmost pos in row?
681 if (left_pos == -1) {
683 Cursor new_cur = cur;
684 if (!new_cur.posVisToNewRow(true)) {
685 LYXERR(Debug::RTL, "not moving!");
689 // we actually move the cursor at the end of this function, for now
690 // just keep track of the new position...
691 new_pit = new_cur.pit();
692 new_pos = new_cur.pos();
693 new_boundary = new_cur.boundary();
695 LYXERR(Debug::RTL, "left edge, moving: " << int(new_pit) << ","
696 << int(new_pos) << "," << (new_boundary ? 1 : 0));
699 // normal movement to the left
701 // Recall, if the cursor is at position 'x', that means *before*
702 // the character at position 'x'. In RTL, "before" means "to the
703 // right of", in LTR, "to the left of". So currently our situation
704 // is this: the position to our left is 'left_pos' (i.e., we're
705 // currently to the right of 'left_pos'). In order to move to the
706 // left, it depends whether or not the character at 'left_pos' is RTL.
707 new_pos_is_RTL = cur.paragraph().getFontSettings(
708 cur.bv().buffer().params(), left_pos).isVisibleRightToLeft();
709 // If the character at 'left_pos' *is* RTL, then in order to move to
710 // the left of it, we need to be *after* 'left_pos', i.e., move to
711 // position 'left_pos' + 1.
712 if (new_pos_is_RTL) {
713 new_pos = left_pos + 1;
714 // if the position *after* left_pos is not RTL, set boundary to
715 // true (we want to be *after* left_pos, not before left_pos + 1!)
716 new_boundary = !cur.paragraph().getFontSettings(
717 cur.bv().buffer().params(), new_pos).isVisibleRightToLeft();
719 // Otherwise (if the character at position 'left_pos' is LTR), then
720 // moving to the left of it is as easy as setting the new position
724 new_boundary = false;
729 LYXERR(Debug::RTL, "moving to: " << new_pos
730 << (new_boundary ? " (boundary)" : ""));
732 return setCursor(cur, new_pit, new_pos, true, new_boundary);
736 bool Text::cursorVisRight(Cursor & cur, bool skip_inset)
738 pit_type new_pit = cur.pit(); // the paragraph to which we will move
739 pos_type new_pos; // the position we will move to
740 bool new_boundary; // will we move to a boundary position?
741 pos_type left_pos; // position visually left of current cursor
742 pos_type right_pos; // position visually right of current cursor
743 bool new_pos_is_RTL; // is new position we're moving to RTL?
745 cur.getSurroundingPos(left_pos, right_pos);
747 LYXERR(Debug::RTL, left_pos <<"|"<< right_pos << " (pos: "<<cur.pos()<<")");
749 // Are we at an inset?
750 Cursor temp_cur = cur;
751 temp_cur.pos() = right_pos;
752 temp_cur.boundary(false);
754 checkAndActivateInsetVisual(temp_cur, right_pos >= cur.pos(), false)) {
755 LYXERR(Debug::RTL, "entering inset at: " << temp_cur.pos());
756 cur = temp_cur; // set the real cursor to new position inside inset!
760 // Are we already at rightmost pos in row?
761 if (right_pos == -1) {
763 Cursor new_cur = cur;
764 if (!new_cur.posVisToNewRow(false)) {
765 LYXERR(Debug::RTL, "not moving!");
769 // we actually move the cursor at the end of this function, for now
770 // just keep track of the new position...
771 new_pit = new_cur.pit();
772 new_pos = new_cur.pos();
773 new_boundary = new_cur.boundary();
775 LYXERR(Debug::RTL, "right edge, moving: " << int(new_pit) << ","
776 << int(new_pos) << "," << (new_boundary ? 1 : 0));
779 // normal movement to the right
781 // Recall, if the cursor is at position 'x', that means *before*
782 // the character at position 'x'. In RTL, "before" means "to the
783 // right of", in LTR, "to the left of". So currently our situation
784 // is this: the position to our right is 'right_pos' (i.e., we're
785 // currently to the left of 'right_pos'). In order to move to the
786 // right, it depends whether or not the character at 'right_pos' is RTL.
787 new_pos_is_RTL = cur.paragraph().getFontSettings(
788 cur.bv().buffer().params(), right_pos).isVisibleRightToLeft();
789 // If the character at 'right_pos' *is* LTR, then in order to move to
790 // the right of it, we need to be *after* 'right_pos', i.e., move to
791 // position 'right_pos' + 1.
792 if (!new_pos_is_RTL) {
793 new_pos = right_pos + 1;
794 // if the position *after* right_pos is RTL, set boundary to
795 // true (we want to be *after* right_pos, not before right_pos + 1!)
796 new_boundary = cur.paragraph().getFontSettings(
797 cur.bv().buffer().params(), new_pos).isVisibleRightToLeft();
799 // Otherwise (if the character at position 'right_pos' is RTL), then
800 // moving to the right of it is as easy as setting the new position
804 new_boundary = false;
809 LYXERR(Debug::RTL, "moving to: " << new_pos
810 << (new_boundary ? " (boundary)" : ""));
812 return setCursor(cur, new_pit, new_pos, true, new_boundary);
816 bool Text::cursorForward(Cursor & cur)
818 // Tell BufferView to test for FitCursor in any case!
819 cur.updateFlags(Update::FitCursor);
821 // not at paragraph end?
822 if (cur.pos() != cur.lastpos()) {
823 // in front of editable inset, i.e. jump into it?
824 if (checkAndActivateInset(cur, true))
827 TextMetrics const & tm = cur.bv().textMetrics(this);
828 // if left of boundary -> just jump to right side
829 // but for RTL boundaries don't, because: abc|DDEEFFghi -> abcDDEEF|Fghi
830 if (cur.boundary() && !tm.isRTLBoundary(cur.pit(), cur.pos()))
831 return setCursor(cur, cur.pit(), cur.pos(), true, false);
833 // next position is left of boundary,
834 // but go to next line for special cases like space, newline, linesep
836 // some effectless debug code to see the values in the debugger
837 int endpos = cur.textRow().endpos();
838 int lastpos = cur.lastpos();
840 bool linesep = cur.paragraph().isLineSeparator(cur.pos());
841 bool newline = cur.paragraph().isNewline(cur.pos());
842 bool sep = cur.paragraph().isSeparator(cur.pos());
843 if (cur.pos() != cur.lastpos()) {
844 bool linesep2 = cur.paragraph().isLineSeparator(cur.pos()+1);
845 bool newline2 = cur.paragraph().isNewline(cur.pos()+1);
846 bool sep2 = cur.paragraph().isSeparator(cur.pos()+1);
849 if (cur.textRow().endpos() == cur.pos() + 1 &&
850 cur.textRow().endpos() != cur.lastpos() &&
851 !cur.paragraph().isNewline(cur.pos()) &&
852 !cur.paragraph().isLineSeparator(cur.pos()) &&
853 !cur.paragraph().isSeparator(cur.pos())) {
854 return setCursor(cur, cur.pit(), cur.pos() + 1, true, true);
857 // in front of RTL boundary? Stay on this side of the boundary because:
858 // ab|cDDEEFFghi -> abc|DDEEFFghi
859 if (tm.isRTLBoundary(cur.pit(), cur.pos() + 1))
860 return setCursor(cur, cur.pit(), cur.pos() + 1, true, true);
863 return setCursor(cur, cur.pit(), cur.pos() + 1, true, false);
866 // move to next paragraph
867 if (cur.pit() != cur.lastpit())
868 return setCursor(cur, cur.pit() + 1, 0, true, false);
873 bool Text::cursorUpParagraph(Cursor & cur)
875 bool updated = false;
877 updated = setCursor(cur, cur.pit(), 0);
878 else if (cur.pit() != 0)
879 updated = setCursor(cur, cur.pit() - 1, 0);
884 bool Text::cursorDownParagraph(Cursor & cur)
886 bool updated = false;
887 if (cur.pit() != cur.lastpit())
888 updated = setCursor(cur, cur.pit() + 1, 0);
890 updated = setCursor(cur, cur.pit(), cur.lastpos());
895 // fix the cursor `cur' after a characters has been deleted at `where'
896 // position. Called by deleteEmptyParagraphMechanism
897 void Text::fixCursorAfterDelete(CursorSlice & cur, CursorSlice const & where)
899 // Do nothing if cursor is not in the paragraph where the
901 if (cur.pit() != where.pit())
904 // If cursor position is after the deletion place update it
905 if (cur.pos() > where.pos())
908 // Check also if we don't want to set the cursor on a spot behind the
909 // pagragraph because we erased the last character.
910 if (cur.pos() > cur.lastpos())
911 cur.pos() = cur.lastpos();
915 bool Text::deleteEmptyParagraphMechanism(Cursor & cur,
916 Cursor & old, bool & need_anchor_change)
918 //LYXERR(Debug::DEBUG, "DEPM: cur:\n" << cur << "old:\n" << old);
920 Paragraph & oldpar = old.paragraph();
922 // We allow all kinds of "mumbo-jumbo" when freespacing.
923 if (oldpar.isFreeSpacing())
926 /* Ok I'll put some comments here about what is missing.
927 There are still some small problems that can lead to
928 double spaces stored in the document file or space at
929 the beginning of paragraphs(). This happens if you have
930 the cursor between to spaces and then save. Or if you
931 cut and paste and the selection have a space at the
932 beginning and then save right after the paste. (Lgb)
935 // If old.pos() == 0 and old.pos()(1) == LineSeparator
936 // delete the LineSeparator.
939 // If old.pos() == 1 and old.pos()(0) == LineSeparator
940 // delete the LineSeparator.
943 bool const same_inset = &old.inset() == &cur.inset();
944 bool const same_par = same_inset && old.pit() == cur.pit();
945 bool const same_par_pos = same_par && old.pos() == cur.pos();
947 // If the chars around the old cursor were spaces, delete one of them.
949 // Only if the cursor has really moved.
951 && old.pos() < oldpar.size()
952 && oldpar.isLineSeparator(old.pos())
953 && oldpar.isLineSeparator(old.pos() - 1)
954 && !oldpar.isDeleted(old.pos() - 1)
955 && !oldpar.isDeleted(old.pos())) {
956 oldpar.eraseChar(old.pos() - 1, cur.buffer().params().trackChanges);
957 // FIXME: This will not work anymore when we have multiple views of the same buffer
958 // In this case, we will have to correct also the cursors held by
959 // other bufferviews. It will probably be easier to do that in a more
960 // automated way in CursorSlice code. (JMarc 26/09/2001)
961 // correct all cursor parts
963 fixCursorAfterDelete(cur.top(), old.top());
964 need_anchor_change = true;
970 // only do our magic if we changed paragraph
974 // don't delete anything if this is the ONLY paragraph!
975 if (old.lastpit() == 0)
978 // Do not delete empty paragraphs with keepempty set.
979 if (oldpar.allowEmpty())
982 if (oldpar.empty() || (oldpar.size() == 1 && oldpar.isLineSeparator(0))) {
984 old.recordUndo(ATOMIC_UNDO,
985 max(old.pit() - 1, pit_type(0)),
986 min(old.pit() + 1, old.lastpit()));
987 ParagraphList & plist = old.text()->paragraphs();
988 bool const soa = oldpar.params().startOfAppendix();
989 plist.erase(boost::next(plist.begin(), old.pit()));
990 // do not lose start of appendix marker (bug 4212)
991 if (soa && old.pit() < pit_type(plist.size()))
992 plist[old.pit()].params().startOfAppendix(true);
994 // see #warning (FIXME?) above
995 if (cur.depth() >= old.depth()) {
996 CursorSlice & curslice = cur[old.depth() - 1];
997 if (&curslice.inset() == &old.inset()
998 && curslice.pit() > old.pit()) {
1000 // since a paragraph has been deleted, all the
1001 // insets after `old' have been copied and
1002 // their address has changed. Therefore we
1003 // need to `regenerate' cur. (JMarc)
1004 cur.updateInsets(&(cur.bottom().inset()));
1005 need_anchor_change = true;
1011 if (oldpar.stripLeadingSpaces(cur.buffer().params().trackChanges)) {
1012 need_anchor_change = true;
1013 // We return true here because the Paragraph contents changed and
1014 // we need a redraw before further action is processed.
1022 void Text::deleteEmptyParagraphMechanism(pit_type first, pit_type last, bool trackChanges)
1024 BOOST_ASSERT(first >= 0 && first <= last && last < (int) pars_.size());
1026 for (pit_type pit = first; pit <= last; ++pit) {
1027 Paragraph & par = pars_[pit];
1029 // We allow all kinds of "mumbo-jumbo" when freespacing.
1030 if (par.isFreeSpacing())
1033 for (pos_type pos = 1; pos < par.size(); ++pos) {
1034 if (par.isLineSeparator(pos) && par.isLineSeparator(pos - 1)
1035 && !par.isDeleted(pos - 1)) {
1036 if (par.eraseChar(pos - 1, trackChanges)) {
1042 // don't delete anything if this is the only remaining paragraph within the given range
1043 // note: Text::acceptOrRejectChanges() sets the cursor to 'first' after calling DEPM
1047 // don't delete empty paragraphs with keepempty set
1048 if (par.allowEmpty())
1051 if (par.empty() || (par.size() == 1 && par.isLineSeparator(0))) {
1052 pars_.erase(boost::next(pars_.begin(), pit));
1058 par.stripLeadingSpaces(trackChanges);
1063 void Text::recUndo(Cursor & cur, pit_type first, pit_type last) const
1065 cur.recordUndo(ATOMIC_UNDO, first, last);
1069 void Text::recUndo(Cursor & cur, pit_type par) const
1071 cur.recordUndo(ATOMIC_UNDO, par, par);