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
15 * \author Jürgen Vigna
17 * Full author contact details are available in file CREDITS.
25 #include "buffer_funcs.h"
26 #include "bufferlist.h"
27 #include "bufferparams.h"
28 #include "BufferView.h"
30 #include "coordcache.h"
32 #include "CutAndPaste.h"
34 #include "dispatchresult.h"
35 #include "errorlist.h"
36 #include "funcrequest.h"
43 #include "lyxrow_funcs.h"
44 #include "paragraph.h"
45 #include "paragraph_funcs.h"
46 #include "ParagraphParameters.h"
47 #include "pariterator.h"
48 #include "lyxserver.h"
49 #include "lyxsocket.h"
53 #include "frontends/FontMetrics.h"
55 #include "insets/insetenv.h"
57 #include "mathed/InsetMathHull.h"
59 #include "support/textutils.h"
61 #include <boost/current_function.hpp>
65 using lyx::CoordCache;
71 using std::ostringstream;
77 LyXText::LyXText(BufferView * bv)
78 : maxwidth_(bv ? bv->workWidth() : 100),
79 current_font(LyXFont::ALL_INHERIT),
80 background_color_(LColor::background),
86 void LyXText::init(BufferView * bv)
90 maxwidth_ = bv->workWidth();
95 pit_type const end = paragraphs().size();
96 for (pit_type pit = 0; pit != end; ++pit)
97 pars_[pit].rows().clear();
99 updateLabels(*bv->buffer());
103 bool LyXText::isMainText() const
105 return &bv()->buffer()->text() == this;
109 //takes screen x,y coordinates
110 InsetBase * LyXText::checkInsetHit(int x, int y) const
112 pit_type pit = getPitNearY(y);
113 BOOST_ASSERT(pit != -1);
115 Paragraph const & par = pars_[pit];
118 << BOOST_CURRENT_FUNCTION
123 InsetList::const_iterator iit = par.insetlist.begin();
124 InsetList::const_iterator iend = par.insetlist.end();
125 for (; iit != iend; ++iit) {
126 InsetBase * inset = iit->inset;
129 << BOOST_CURRENT_FUNCTION
130 << ": examining inset " << inset << endl;
132 if (bv()->coordCache().getInsets().has(inset))
134 << BOOST_CURRENT_FUNCTION
135 << ": xo: " << inset->xo(*bv()) << "..."
136 << inset->xo(*bv()) + inset->width()
137 << " yo: " << inset->yo(*bv()) - inset->ascent()
139 << inset->yo(*bv()) + inset->descent()
143 << BOOST_CURRENT_FUNCTION
144 << ": inset has no cached position" << endl;
146 if (inset->covers(*bv(), x, y)) {
148 << BOOST_CURRENT_FUNCTION
149 << ": Hit inset: " << inset << endl;
154 << BOOST_CURRENT_FUNCTION
155 << ": No inset hit. " << endl;
161 // Gets the fully instantiated font at a given position in a paragraph
162 // Basically the same routine as Paragraph::getFont() in paragraph.C.
163 // The difference is that this one is used for displaying, and thus we
164 // are allowed to make cosmetic improvements. For instance make footnotes
166 LyXFont LyXText::getFont(Paragraph const & par, pos_type const pos) const
168 BOOST_ASSERT(pos >= 0);
170 LyXLayout_ptr const & layout = par.layout();
174 BufferParams const & params = bv()->buffer()->params();
175 pos_type const body_pos = par.beginOfBody();
177 // We specialize the 95% common case:
178 if (!par.getDepth()) {
179 LyXFont f = par.getFontSettings(params, pos);
184 if (layout->labeltype == LABEL_MANUAL && pos < body_pos) {
185 lf = layout->labelfont;
186 rlf = layout->reslabelfont;
189 rlf = layout->resfont;
191 // In case the default family has been customized
192 if (lf.family() == LyXFont::INHERIT_FAMILY)
193 rlf.setFamily(params.getFont().family());
194 return f.realize(rlf);
197 // The uncommon case need not be optimized as much
200 layoutfont = layout->labelfont;
202 layoutfont = layout->font;
204 LyXFont font = par.getFontSettings(params, pos);
205 font.realize(layoutfont);
208 applyOuterFont(font);
210 // Find the pit value belonging to paragraph. This will not break
211 // even if pars_ would not be a vector anymore.
212 // Performance appears acceptable.
214 pit_type pit = pars_.size();
215 for (pit_type it = 0; it < pit; ++it)
216 if (&pars_[it] == &par) {
220 // Realize against environment font information
221 // NOTE: the cast to pit_type should be removed when pit_type
222 // changes to a unsigned integer.
223 if (pit < pit_type(pars_.size()))
224 font.realize(outerFont(pit, pars_));
226 // Realize with the fonts of lesser depth.
227 font.realize(params.getFont());
232 // There are currently two font mechanisms in LyX:
233 // 1. The font attributes in a lyxtext, and
234 // 2. The inset-specific font properties, defined in an inset's
235 // metrics() and draw() methods and handed down the inset chain through
236 // the pi/mi parameters, and stored locally in a lyxtext in font_.
237 // This is where the two are integrated in the final fully realized
239 void LyXText::applyOuterFont(LyXFont & font) const {
241 lf.reduce(bv()->buffer()->params().getFont());
243 lf.setLanguage(font.language());
248 LyXFont LyXText::getLayoutFont(pit_type const pit) const
250 LyXLayout_ptr const & layout = pars_[pit].layout();
252 if (!pars_[pit].getDepth()) {
253 LyXFont lf = layout->resfont;
254 // In case the default family has been customized
255 if (layout->font.family() == LyXFont::INHERIT_FAMILY)
256 lf.setFamily(bv()->buffer()->params().getFont().family());
260 LyXFont font = layout->font;
261 // Realize with the fonts of lesser depth.
262 //font.realize(outerFont(pit, paragraphs()));
263 font.realize(bv()->buffer()->params().getFont());
269 LyXFont LyXText::getLabelFont(Paragraph const & par) const
271 LyXLayout_ptr const & layout = par.layout();
273 if (!par.getDepth()) {
274 LyXFont lf = layout->reslabelfont;
275 // In case the default family has been customized
276 if (layout->labelfont.family() == LyXFont::INHERIT_FAMILY)
277 lf.setFamily(bv()->buffer()->params().getFont().family());
281 LyXFont font = layout->labelfont;
282 // Realize with the fonts of lesser depth.
283 font.realize(bv()->buffer()->params().getFont());
289 void LyXText::setCharFont(pit_type pit, pos_type pos, LyXFont const & fnt)
292 LyXLayout_ptr const & layout = pars_[pit].layout();
294 // Get concrete layout font to reduce against
297 if (pos < pars_[pit].beginOfBody())
298 layoutfont = layout->labelfont;
300 layoutfont = layout->font;
302 // Realize against environment font information
303 if (pars_[pit].getDepth()) {
305 while (!layoutfont.resolved() &&
306 tp != pit_type(paragraphs().size()) &&
307 pars_[tp].getDepth()) {
308 tp = outerHook(tp, paragraphs());
309 if (tp != pit_type(paragraphs().size()))
310 layoutfont.realize(pars_[tp].layout()->font);
314 // Inside inset, apply the inset's font attributes if any
317 layoutfont.realize(font_);
319 layoutfont.realize(bv()->buffer()->params().getFont());
321 // Now, reduce font against full layout font
322 font.reduce(layoutfont);
324 pars_[pit].setFont(pos, font);
328 // return past-the-last paragraph influenced by a layout change on pit
329 pit_type LyXText::undoSpan(pit_type pit)
331 pit_type end = paragraphs().size();
332 pit_type nextpit = pit + 1;
335 //because of parindents
336 if (!pars_[pit].getDepth())
337 return boost::next(nextpit);
338 //because of depth constrains
339 for (; nextpit != end; ++pit, ++nextpit) {
340 if (!pars_[pit].getDepth())
347 void LyXText::setLayout(pit_type start, pit_type end, string const & layout)
349 BOOST_ASSERT(start != end);
351 BufferParams const & bufparams = bv()->buffer()->params();
352 LyXLayout_ptr const & lyxlayout = bufparams.getLyXTextClass()[layout];
354 for (pit_type pit = start; pit != end; ++pit) {
355 pars_[pit].applyLayout(lyxlayout);
356 if (lyxlayout->margintype == MARGIN_MANUAL)
357 pars_[pit].setLabelWidthString(lyxlayout->labelstring());
362 // set layout over selection and make a total rebreak of those paragraphs
363 void LyXText::setLayout(LCursor & cur, string const & layout)
365 BOOST_ASSERT(this == cur.text());
366 // special handling of new environment insets
367 BufferView & bv = cur.bv();
368 BufferParams const & params = bv.buffer()->params();
369 LyXLayout_ptr const & lyxlayout = params.getLyXTextClass()[layout];
370 if (lyxlayout->is_environment) {
371 // move everything in a new environment inset
372 lyxerr[Debug::DEBUG] << "setting layout " << layout << endl;
373 lyx::dispatch(FuncRequest(LFUN_LINE_BEGIN));
374 lyx::dispatch(FuncRequest(LFUN_LINE_END_SELECT));
375 lyx::dispatch(FuncRequest(LFUN_CUT));
376 InsetBase * inset = new InsetEnvironment(params, layout);
377 insertInset(cur, inset);
378 //inset->edit(cur, true);
379 //lyx::dispatch(FuncRequest(LFUN_PASTE));
383 pit_type start = cur.selBegin().pit();
384 pit_type end = cur.selEnd().pit() + 1;
385 pit_type undopit = undoSpan(end - 1);
386 recUndo(start, undopit - 1);
387 setLayout(start, end, layout);
388 updateLabels(cur.buffer());
395 bool changeDepthAllowed(LyXText::DEPTH_CHANGE type,
396 Paragraph const & par, int max_depth)
398 if (par.layout()->labeltype == LABEL_BIBLIO)
400 int const depth = par.params().depth();
401 if (type == LyXText::INC_DEPTH && depth < max_depth)
403 if (type == LyXText::DEC_DEPTH && depth > 0)
412 bool LyXText::changeDepthAllowed(LCursor & cur, DEPTH_CHANGE type) const
414 BOOST_ASSERT(this == cur.text());
415 // this happens when selecting several cells in tabular (bug 2630)
416 if (cur.selBegin().idx() != cur.selEnd().idx())
419 pit_type const beg = cur.selBegin().pit();
420 pit_type const end = cur.selEnd().pit() + 1;
421 int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
423 for (pit_type pit = beg; pit != end; ++pit) {
424 if (::changeDepthAllowed(type, pars_[pit], max_depth))
426 max_depth = pars_[pit].getMaxDepthAfter();
432 void LyXText::changeDepth(LCursor & cur, DEPTH_CHANGE type)
434 BOOST_ASSERT(this == cur.text());
435 pit_type const beg = cur.selBegin().pit();
436 pit_type const end = cur.selEnd().pit() + 1;
437 recordUndoSelection(cur);
438 int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
440 for (pit_type pit = beg; pit != end; ++pit) {
441 Paragraph & par = pars_[pit];
442 if (::changeDepthAllowed(type, par, max_depth)) {
443 int const depth = par.params().depth();
444 if (type == INC_DEPTH)
445 par.params().depth(depth + 1);
447 par.params().depth(depth - 1);
449 max_depth = par.getMaxDepthAfter();
451 // this handles the counter labels, and also fixes up
452 // depth values for follow-on (child) paragraphs
453 updateLabels(cur.buffer());
457 // set font over selection
458 void LyXText::setFont(LCursor & cur, LyXFont const & font, bool toggleall)
460 BOOST_ASSERT(this == cur.text());
461 // if there is no selection just set the current_font
462 if (!cur.selection()) {
463 // Determine basis font
465 pit_type pit = cur.pit();
466 if (cur.pos() < pars_[pit].beginOfBody())
467 layoutfont = getLabelFont(pars_[pit]);
469 layoutfont = getLayoutFont(pit);
471 // Update current font
472 real_current_font.update(font,
473 cur.buffer().params().language,
476 // Reduce to implicit settings
477 current_font = real_current_font;
478 current_font.reduce(layoutfont);
479 // And resolve it completely
480 real_current_font.realize(layoutfont);
485 // Ok, we have a selection.
486 recordUndoSelection(cur);
488 DocIterator dit = cur.selectionBegin();
489 DocIterator ditend = cur.selectionEnd();
491 BufferParams const & params = cur.buffer().params();
493 // Don't use forwardChar here as ditend might have
494 // pos() == lastpos() and forwardChar would miss it.
495 // Can't use forwardPos either as this descends into
497 for (; dit != ditend; dit.forwardPosNoDescend()) {
498 if (dit.pos() != dit.lastpos()) {
499 LyXFont f = getFont(dit.paragraph(), dit.pos());
500 f.update(font, params.language, toggleall);
501 setCharFont(dit.pit(), dit.pos(), f);
507 // the cursor set functions have a special mechanism. When they
508 // realize you left an empty paragraph, they will delete it.
510 bool LyXText::cursorHome(LCursor & cur)
512 BOOST_ASSERT(this == cur.text());
513 Row const & row = cur.paragraph().getRow(cur.pos(),cur.boundary());
515 return setCursor(cur, cur.pit(), row.pos());
519 bool LyXText::cursorEnd(LCursor & cur)
521 BOOST_ASSERT(this == cur.text());
522 // if not on the last row of the par, put the cursor before
523 // the final space exept if I have a spanning inset or one string
524 // is so long that we force a break.
525 pos_type end = cur.textRow().endpos();
527 // empty text, end-1 is no valid position
529 bool boundary = false;
530 if (end != cur.lastpos()) {
531 if (!cur.paragraph().isLineSeparator(end-1)
532 && !cur.paragraph().isNewline(end-1))
537 return setCursor(cur, cur.pit(), end, true, boundary);
541 bool LyXText::cursorTop(LCursor & cur)
543 BOOST_ASSERT(this == cur.text());
544 return setCursor(cur, 0, 0);
548 bool LyXText::cursorBottom(LCursor & cur)
550 BOOST_ASSERT(this == cur.text());
551 return setCursor(cur, cur.lastpit(), boost::prior(paragraphs().end())->size());
555 void LyXText::toggleFree(LCursor & cur, LyXFont const & font, bool toggleall)
557 BOOST_ASSERT(this == cur.text());
558 // If the mask is completely neutral, tell user
559 if (font == LyXFont(LyXFont::ALL_IGNORE)) {
560 // Could only happen with user style
561 cur.message(_("No font change defined. "
562 "Use Character under the Layout menu to define font change."));
566 // Try implicit word selection
567 // If there is a change in the language the implicit word selection
569 CursorSlice resetCursor = cur.top();
570 bool implicitSelection =
571 font.language() == ignore_language
572 && font.number() == LyXFont::IGNORE
573 && selectWordWhenUnderCursor(cur, lyx::WHOLE_WORD_STRICT);
576 setFont(cur, font, toggleall);
578 // Implicit selections are cleared afterwards
579 // and cursor is set to the original position.
580 if (implicitSelection) {
581 cur.clearSelection();
582 cur.top() = resetCursor;
588 string LyXText::getStringToIndex(LCursor const & cur)
590 BOOST_ASSERT(this == cur.text());
594 idxstring = cur.selectionAsString(false);
596 // Try implicit word selection. If there is a change
597 // in the language the implicit word selection is
599 LCursor tmpcur = cur;
600 selectWord(tmpcur, lyx::PREVIOUS_WORD);
602 if (!tmpcur.selection())
603 cur.message(_("Nothing to index!"));
604 else if (tmpcur.selBegin().pit() != tmpcur.selEnd().pit())
605 cur.message(_("Cannot index more than one paragraph!"));
607 idxstring = tmpcur.selectionAsString(false);
610 return lyx::to_utf8(idxstring);
614 void LyXText::setParagraph(LCursor & cur,
615 Spacing const & spacing, LyXAlignment align,
616 string const & labelwidthstring, bool noindent)
618 BOOST_ASSERT(cur.text());
619 // make sure that the depth behind the selection are restored, too
620 pit_type undopit = undoSpan(cur.selEnd().pit());
621 recUndo(cur.selBegin().pit(), undopit - 1);
623 for (pit_type pit = cur.selBegin().pit(), end = cur.selEnd().pit();
625 Paragraph & par = pars_[pit];
626 ParagraphParameters & params = par.params();
627 params.spacing(spacing);
629 // does the layout allow the new alignment?
630 LyXLayout_ptr const & layout = par.layout();
632 if (align == LYX_ALIGN_LAYOUT)
633 align = layout->align;
634 if (align & layout->alignpossible) {
635 if (align == layout->align)
636 params.align(LYX_ALIGN_LAYOUT);
640 par.setLabelWidthString(labelwidthstring);
641 params.noindent(noindent);
646 // this really should just insert the inset and not move the cursor.
647 void LyXText::insertInset(LCursor & cur, InsetBase * inset)
649 BOOST_ASSERT(this == cur.text());
651 // FIXME: change tracking (MG)
652 cur.paragraph().insertInset(cur.pos(), inset, Change(Change::INSERTED));
656 // needed to insert the selection
657 void LyXText::insertStringAsLines(LCursor & cur, docstring const & str)
659 cur.buffer().insertStringAsLines(pars_, cur.pit(), cur.pos(),
660 current_font, str, autoBreakRows_);
664 // turn double CR to single CR, others are converted into one
665 // blank. Then insertStringAsLines is called
666 void LyXText::insertStringAsParagraphs(LCursor & cur, docstring const & str)
668 docstring linestr = str;
669 bool newline_inserted = false;
671 for (string::size_type i = 0, siz = linestr.size(); i < siz; ++i) {
672 if (linestr[i] == '\n') {
673 if (newline_inserted) {
674 // we know that \r will be ignored by
675 // insertStringAsLines. Of course, it is a dirty
676 // trick, but it works...
677 linestr[i - 1] = '\r';
681 newline_inserted = true;
683 } else if (isPrintable(linestr[i])) {
684 newline_inserted = false;
687 insertStringAsLines(cur, linestr);
691 bool LyXText::setCursor(LCursor & cur, pit_type par, pos_type pos,
692 bool setfont, bool boundary)
695 setCursorIntern(cur, par, pos, setfont, boundary);
696 return deleteEmptyParagraphMechanism(cur, old);
700 void LyXText::setCursor(CursorSlice & cur, pit_type par, pos_type pos)
702 BOOST_ASSERT(par != int(paragraphs().size()));
706 // now some strict checking
707 Paragraph & para = getPar(par);
709 // None of these should happen, but we're scaredy-cats
711 lyxerr << "dont like -1" << endl;
715 if (pos > para.size()) {
716 lyxerr << "dont like 1, pos: " << pos
717 << " size: " << para.size()
718 << " par: " << par << endl;
724 void LyXText::setCursorIntern(LCursor & cur,
725 pit_type par, pos_type pos, bool setfont, bool boundary)
727 BOOST_ASSERT(this == cur.text());
728 cur.boundary(boundary);
729 setCursor(cur.top(), par, pos);
736 void LyXText::setCurrentFont(LCursor & cur)
738 BOOST_ASSERT(this == cur.text());
739 pos_type pos = cur.pos();
740 Paragraph & par = cur.paragraph();
742 if (cur.boundary() && pos > 0)
746 if (pos == cur.lastpos())
748 else // potentional bug... BUG (Lgb)
749 if (par.isSeparator(pos)) {
750 if (pos > cur.textRow().pos() &&
751 bidi.level(pos) % 2 ==
752 bidi.level(pos - 1) % 2)
754 else if (pos + 1 < cur.lastpos())
759 BufferParams const & bufparams = cur.buffer().params();
760 current_font = par.getFontSettings(bufparams, pos);
761 real_current_font = getFont(par, pos);
763 if (cur.pos() == cur.lastpos()
764 && bidi.isBoundary(cur.buffer(), par, cur.pos())
765 && !cur.boundary()) {
766 Language const * lang = par.getParLanguage(bufparams);
767 current_font.setLanguage(lang);
768 current_font.setNumber(LyXFont::OFF);
769 real_current_font.setLanguage(lang);
770 real_current_font.setNumber(LyXFont::OFF);
775 // x is an absolute screen coord
776 // returns the column near the specified x-coordinate of the row
777 // x is set to the real beginning of this column
778 pos_type LyXText::getColumnNearX(pit_type const pit,
779 Row const & row, int & x, bool & boundary) const
781 int const xo = bv()->coordCache().get(this, pit).x_;
783 RowMetrics const r = computeRowMetrics(pit, row);
784 Paragraph const & par = pars_[pit];
786 pos_type vc = row.pos();
787 pos_type end = row.endpos();
789 LyXLayout_ptr const & layout = par.layout();
791 bool left_side = false;
793 pos_type body_pos = par.beginOfBody();
796 double last_tmpx = tmpx;
799 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
802 // check for empty row
808 lyx::frontend::FontMetrics const & fm
809 = theFontMetrics(getLabelFont(par));
811 while (vc < end && tmpx <= x) {
812 c = bidi.vis2log(vc);
814 if (body_pos > 0 && c == body_pos - 1) {
815 string lsep = layout->labelsep;
816 docstring dlsep(lsep.begin(), lsep.end());
817 tmpx += r.label_hfill + fm.width(dlsep);
818 if (par.isLineSeparator(body_pos - 1))
819 tmpx -= singleWidth(par, body_pos - 1);
822 if (hfillExpansion(par, row, c)) {
823 tmpx += singleWidth(par, c);
827 tmpx += r.label_hfill;
828 } else if (par.isSeparator(c)) {
829 tmpx += singleWidth(par, c);
833 tmpx += singleWidth(par, c);
838 if ((tmpx + last_tmpx) / 2 > x) {
843 BOOST_ASSERT(vc <= end); // This shouldn't happen.
846 // This (rtl_support test) is not needed, but gives
847 // some speedup if rtl_support == false
848 bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
850 // If lastrow is false, we don't need to compute
852 bool const rtl = lastrow ? isRTL(par) : false;
854 ((rtl && left_side && vc == row.pos() && x < tmpx - 5) ||
855 (!rtl && !left_side && vc == end && x > tmpx + 5)))
857 else if (vc == row.pos()) {
858 c = bidi.vis2log(vc);
859 if (bidi.level(c) % 2 == 1)
862 c = bidi.vis2log(vc - 1);
863 bool const rtl = (bidi.level(c) % 2 == 1);
864 if (left_side == rtl) {
866 boundary = bidi.isBoundary(*bv()->buffer(), par, c);
870 // I believe this code is not needed anymore (Jug 20050717)
872 // The following code is necessary because the cursor position past
873 // the last char in a row is logically equivalent to that before
874 // the first char in the next row. That's why insets causing row
875 // divisions -- Newline and display-style insets -- must be treated
876 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
877 // Newline inset, air gap below:
878 if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
879 if (bidi.level(end -1) % 2 == 0)
880 tmpx -= singleWidth(par, end - 1);
882 tmpx += singleWidth(par, end - 1);
886 // Air gap above display inset:
887 if (row.pos() < end && c >= end && end < par.size()
888 && par.isInset(end) && par.getInset(end)->display()) {
891 // Air gap below display inset:
892 if (row.pos() < end && c >= end && par.isInset(end - 1)
893 && par.getInset(end - 1)->display()) {
899 pos_type const col = c - row.pos();
901 if (!c || end == par.size())
904 if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
909 return min(col, end - 1 - row.pos());
913 // y is screen coordinate
914 pit_type LyXText::getPitNearY(int y) const
916 BOOST_ASSERT(!paragraphs().empty());
917 BOOST_ASSERT(bv()->coordCache().getParPos().find(this) != bv()->coordCache().getParPos().end());
918 CoordCache::InnerParPosCache const & cc = bv()->coordCache().getParPos().find(this)->second;
920 << BOOST_CURRENT_FUNCTION
921 << ": y: " << y << " cache size: " << cc.size()
924 // look for highest numbered paragraph with y coordinate less than given y
927 CoordCache::InnerParPosCache::const_iterator it = cc.begin();
928 CoordCache::InnerParPosCache::const_iterator et = cc.end();
929 for (; it != et; ++it) {
931 << BOOST_CURRENT_FUNCTION
932 << " examining: pit: " << it->first
933 << " y: " << it->second.y_
936 if (it->first >= pit && int(it->second.y_) - int(pars_[it->first].ascent()) <= y) {
943 << BOOST_CURRENT_FUNCTION
944 << ": found best y: " << yy << " for pit: " << pit
951 Row const & LyXText::getRowNearY(int y, pit_type pit) const
953 Paragraph const & par = pars_[pit];
954 int yy = bv()->coordCache().get(this, pit).y_ - par.ascent();
955 BOOST_ASSERT(!par.rows().empty());
956 RowList::const_iterator rit = par.rows().begin();
957 RowList::const_iterator const rlast = boost::prior(par.rows().end());
958 for (; rit != rlast; yy += rit->height(), ++rit)
959 if (yy + rit->height() > y)
965 // x,y are absolute screen coordinates
966 // sets cursor recursively descending into nested editable insets
967 InsetBase * LyXText::editXY(LCursor & cur, int x, int y)
969 pit_type pit = getPitNearY(y);
970 BOOST_ASSERT(pit != -1);
971 Row const & row = getRowNearY(y, pit);
974 int xx = x; // is modified by getColumnNearX
975 pos_type const pos = row.pos() + getColumnNearX(pit, row, xx, bound);
981 // try to descend into nested insets
982 InsetBase * inset = checkInsetHit(x, y);
983 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
985 // Either we deconst editXY or better we move current_font
986 // and real_current_font to LCursor
991 // This should be just before or just behind the
992 // cursor position set above.
993 BOOST_ASSERT((pos != 0 && inset == pars_[pit].getInset(pos - 1))
994 || inset == pars_[pit].getInset(pos));
995 // Make sure the cursor points to the position before
997 if (inset == pars_[pit].getInset(pos - 1))
999 inset = inset->editXY(cur, x, y);
1000 if (cur.top().text() == this)
1001 setCurrentFont(cur);
1006 bool LyXText::checkAndActivateInset(LCursor & cur, bool front)
1008 if (cur.selection())
1010 if (cur.pos() == cur.lastpos())
1012 InsetBase * inset = cur.nextInset();
1013 if (!isHighlyEditableInset(inset))
1015 inset->edit(cur, front);
1020 bool LyXText::cursorLeft(LCursor & cur)
1022 if (!cur.boundary() && cur.pos() > 0 &&
1023 cur.textRow().pos() == cur.pos() &&
1024 !cur.paragraph().isLineSeparator(cur.pos()-1) &&
1025 !cur.paragraph().isNewline(cur.pos()-1)) {
1026 return setCursor(cur, cur.pit(), cur.pos(), true, true);
1028 if (cur.pos() != 0) {
1029 bool boundary = cur.boundary();
1030 bool updateNeeded = setCursor(cur, cur.pit(), cur.pos() - 1, true, false);
1031 if (!checkAndActivateInset(cur, false)) {
1032 if (false && !boundary &&
1033 bidi.isBoundary(cur.buffer(), cur.paragraph(), cur.pos() + 1))
1035 setCursor(cur, cur.pit(), cur.pos() + 1, true, true);
1037 return updateNeeded;
1040 if (cur.pit() != 0) {
1041 // Steps into the paragraph above
1042 return setCursor(cur, cur.pit() - 1, getPar(cur.pit() - 1).size());
1048 bool LyXText::cursorRight(LCursor & cur)
1050 if (cur.pos() != cur.lastpos()) {
1052 return setCursor(cur, cur.pit(), cur.pos(),
1055 bool updateNeeded = false;
1056 if (!checkAndActivateInset(cur, true)) {
1057 if (cur.textRow().endpos() == cur.pos() + 1 &&
1058 cur.textRow().endpos() != cur.lastpos() &&
1059 !cur.paragraph().isLineSeparator(cur.pos()) &&
1060 !cur.paragraph().isNewline(cur.pos())) {
1063 updateNeeded |= setCursor(cur, cur.pit(), cur.pos() + 1, true, cur.boundary());
1064 if (false && bidi.isBoundary(cur.buffer(), cur.paragraph(),
1066 updateNeeded |= setCursor(cur, cur.pit(), cur.pos(), true, true);
1068 return updateNeeded;
1071 if (cur.pit() != cur.lastpit())
1072 return setCursor(cur, cur.pit() + 1, 0);
1077 bool LyXText::cursorUp(LCursor & cur)
1079 Paragraph const & par = cur.paragraph();
1081 int const x = cur.targetX();
1083 if (cur.pos() && cur.boundary())
1084 row = par.pos2row(cur.pos()-1);
1086 row = par.pos2row(cur.pos());
1088 if (!cur.selection()) {
1089 int const y = bv_funcs::getPos(cur.bv(), cur, cur.boundary()).y_;
1091 // Go to middle of previous row. 16 found to work OK;
1092 // 12 = top/bottom margin of display math
1093 int const margin = 3 * InsetMathHull::displayMargin() / 2;
1094 editXY(cur, x, y - par.rows()[row].ascent() - margin);
1095 cur.clearSelection();
1097 // This happens when you move out of an inset.
1098 // And to give the DEPM the possibility of doing
1099 // something we must provide it with two different
1101 LCursor dummy = cur;
1105 return deleteEmptyParagraphMechanism(dummy, old);
1108 bool updateNeeded = false;
1111 updateNeeded |= setCursor(cur, cur.pit(),
1112 x2pos(cur.pit(), row - 1, x));
1113 } else if (cur.pit() > 0) {
1115 //cannot use 'par' now
1116 updateNeeded |= setCursor(cur, cur.pit(),
1117 x2pos(cur.pit(), cur.paragraph().rows().size() - 1, x));
1122 return updateNeeded;
1126 bool LyXText::cursorDown(LCursor & cur)
1128 Paragraph const & par = cur.paragraph();
1130 int const x = cur.targetX();
1132 if (cur.pos() && cur.boundary())
1133 row = par.pos2row(cur.pos()-1);
1135 row = par.pos2row(cur.pos());
1137 if (!cur.selection()) {
1138 int const y = bv_funcs::getPos(cur.bv(), cur, cur.boundary()).y_;
1140 // To middle of next row
1141 int const margin = 3 * InsetMathHull::displayMargin() / 2;
1142 editXY(cur, x, y + par.rows()[row].descent() + margin);
1143 cur.clearSelection();
1145 // This happens when you move out of an inset.
1146 // And to give the DEPM the possibility of doing
1147 // something we must provide it with two different
1149 LCursor dummy = cur;
1153 bool const changed = deleteEmptyParagraphMechanism(dummy, old);
1155 // Make sure that cur gets back whatever happened to dummy(Lgb)
1162 bool updateNeeded = false;
1164 if (row + 1 < int(par.rows().size())) {
1165 updateNeeded |= setCursor(cur, cur.pit(),
1166 x2pos(cur.pit(), row + 1, x));
1167 } else if (cur.pit() + 1 < int(paragraphs().size())) {
1169 updateNeeded |= setCursor(cur, cur.pit(),
1170 x2pos(cur.pit(), 0, x));
1175 return updateNeeded;
1179 bool LyXText::cursorUpParagraph(LCursor & cur)
1181 bool updated = false;
1183 updated = setCursor(cur, cur.pit(), 0);
1184 else if (cur.pit() != 0)
1185 updated = setCursor(cur, cur.pit() - 1, 0);
1190 bool LyXText::cursorDownParagraph(LCursor & cur)
1192 bool updated = false;
1193 if (cur.pit() != cur.lastpit())
1194 updated = setCursor(cur, cur.pit() + 1, 0);
1196 updated = setCursor(cur, cur.pit(), cur.lastpos());
1201 // fix the cursor `cur' after a characters has been deleted at `where'
1202 // position. Called by deleteEmptyParagraphMechanism
1203 void LyXText::fixCursorAfterDelete(CursorSlice & cur, CursorSlice const & where)
1205 // Do nothing if cursor is not in the paragraph where the
1206 // deletion occured,
1207 if (cur.pit() != where.pit())
1210 // If cursor position is after the deletion place update it
1211 if (cur.pos() > where.pos())
1214 // Check also if we don't want to set the cursor on a spot behind the
1215 // pagragraph because we erased the last character.
1216 if (cur.pos() > cur.lastpos())
1217 cur.pos() = cur.lastpos();
1221 bool LyXText::deleteEmptyParagraphMechanism(LCursor & cur, LCursor & old)
1223 // Would be wrong to delete anything if we have a selection.
1224 if (cur.selection())
1227 //lyxerr[Debug::DEBUG] << "DEPM: cur:\n" << cur << "old:\n" << old << endl;
1228 // old should point to us
1229 BOOST_ASSERT(old.text() == this);
1231 Paragraph & oldpar = old.paragraph();
1233 // We allow all kinds of "mumbo-jumbo" when freespacing.
1234 if (oldpar.isFreeSpacing())
1237 /* Ok I'll put some comments here about what is missing.
1238 There are still some small problems that can lead to
1239 double spaces stored in the document file or space at
1240 the beginning of paragraphs(). This happens if you have
1241 the cursor between to spaces and then save. Or if you
1242 cut and paste and the selection have a space at the
1243 beginning and then save right after the paste. (Lgb)
1246 // If old.pos() == 0 and old.pos()(1) == LineSeparator
1247 // delete the LineSeparator.
1250 // If old.pos() == 1 and old.pos()(0) == LineSeparator
1251 // delete the LineSeparator.
1254 bool const same_inset = &old.inset() == &cur.inset();
1255 bool const same_par = same_inset && old.pit() == cur.pit();
1256 bool const same_par_pos = same_par && old.pos() == cur.pos();
1258 // If the chars around the old cursor were spaces, delete one of them.
1259 if (!same_par_pos) {
1260 // Only if the cursor has really moved.
1262 && old.pos() < oldpar.size()
1263 && oldpar.isLineSeparator(old.pos())
1264 && oldpar.isLineSeparator(old.pos() - 1)
1265 // FIXME: change tracking (MG)
1266 && oldpar.lookupChange(old.pos() - 1) != Change(Change::DELETED)) {
1267 // We need to set the text to Change::INSERTED to
1268 // get it erased properly
1269 // FIXME: change tracking (MG)
1270 oldpar.setChange(old.pos() -1, Change(Change::INSERTED));
1271 oldpar.erase(old.pos() - 1);
1272 #ifdef WITH_WARNINGS
1273 #warning This will not work anymore when we have multiple views of the same buffer
1274 // In this case, we will have to correct also the cursors held by
1275 // other bufferviews. It will probably be easier to do that in a more
1276 // automated way in CursorSlice code. (JMarc 26/09/2001)
1278 // correct all cursor parts
1280 fixCursorAfterDelete(cur.top(), old.top());
1287 // only do our magic if we changed paragraph
1291 // don't delete anything if this is the ONLY paragraph!
1292 if (old.lastpit() == 0)
1295 // Do not delete empty paragraphs with keepempty set.
1296 if (oldpar.allowEmpty())
1299 if (oldpar.empty() || (oldpar.size() == 1 && oldpar.isLineSeparator(0))) {
1301 recordUndo(old, Undo::ATOMIC,
1302 max(old.pit() - 1, pit_type(0)),
1303 min(old.pit() + 1, old.lastpit()));
1304 ParagraphList & plist = old.text()->paragraphs();
1305 plist.erase(boost::next(plist.begin(), old.pit()));
1307 // see #warning above
1308 if (cur.depth() >= old.depth()) {
1309 CursorSlice & curslice = cur[old.depth() - 1];
1310 if (&curslice.inset() == &old.inset()
1311 && curslice.pit() > old.pit()) {
1313 // since a paragraph has been deleted, all the
1314 // insets after `old' have been copied and
1315 // their address has changed. Therefore we
1316 // need to `regenerate' cur. (JMarc)
1317 cur.updateInsets(&(cur.bottom().inset()));
1321 // There is a crash reported by Edwin Leuven (16/04/2006) because of:
1322 //ParIterator par_it(old);
1323 //updateLabels(old.buffer(), par_it);
1324 // So for now we do the full update:
1325 updateLabels(old.buffer());
1329 if (oldpar.stripLeadingSpaces())
1336 void LyXText::recUndo(pit_type first, pit_type last) const
1338 recordUndo(bv()->cursor(), Undo::ATOMIC, first, last);
1342 void LyXText::recUndo(pit_type par) const
1344 recordUndo(bv()->cursor(), Undo::ATOMIC, par, par);
1348 int defaultRowHeight()
1350 return int(theFontMetrics(LyXFont(LyXFont::ALL_SANE)).maxHeight() * 1.2);