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 cur.paragraph().insertInset(cur.pos(), inset,
652 Change(cur.buffer().params().trackChanges ?
653 Change::INSERTED : Change::UNCHANGED));
657 // needed to insert the selection
658 void LyXText::insertStringAsLines(LCursor & cur, docstring const & str)
660 cur.buffer().insertStringAsLines(pars_, cur.pit(), cur.pos(),
661 current_font, str, autoBreakRows_);
665 // turn double CR to single CR, others are converted into one
666 // blank. Then insertStringAsLines is called
667 void LyXText::insertStringAsParagraphs(LCursor & cur, docstring const & str)
669 docstring linestr = str;
670 bool newline_inserted = false;
672 for (string::size_type i = 0, siz = linestr.size(); i < siz; ++i) {
673 if (linestr[i] == '\n') {
674 if (newline_inserted) {
675 // we know that \r will be ignored by
676 // insertStringAsLines. Of course, it is a dirty
677 // trick, but it works...
678 linestr[i - 1] = '\r';
682 newline_inserted = true;
684 } else if (isPrintable(linestr[i])) {
685 newline_inserted = false;
688 insertStringAsLines(cur, linestr);
692 bool LyXText::setCursor(LCursor & cur, pit_type par, pos_type pos,
693 bool setfont, bool boundary)
696 setCursorIntern(cur, par, pos, setfont, boundary);
697 return deleteEmptyParagraphMechanism(cur, old);
701 void LyXText::setCursor(CursorSlice & cur, pit_type par, pos_type pos)
703 BOOST_ASSERT(par != int(paragraphs().size()));
707 // now some strict checking
708 Paragraph & para = getPar(par);
710 // None of these should happen, but we're scaredy-cats
712 lyxerr << "dont like -1" << endl;
716 if (pos > para.size()) {
717 lyxerr << "dont like 1, pos: " << pos
718 << " size: " << para.size()
719 << " par: " << par << endl;
725 void LyXText::setCursorIntern(LCursor & cur,
726 pit_type par, pos_type pos, bool setfont, bool boundary)
728 BOOST_ASSERT(this == cur.text());
729 cur.boundary(boundary);
730 setCursor(cur.top(), par, pos);
737 void LyXText::setCurrentFont(LCursor & cur)
739 BOOST_ASSERT(this == cur.text());
740 pos_type pos = cur.pos();
741 Paragraph & par = cur.paragraph();
743 if (cur.boundary() && pos > 0)
747 if (pos == cur.lastpos())
749 else // potentional bug... BUG (Lgb)
750 if (par.isSeparator(pos)) {
751 if (pos > cur.textRow().pos() &&
752 bidi.level(pos) % 2 ==
753 bidi.level(pos - 1) % 2)
755 else if (pos + 1 < cur.lastpos())
760 BufferParams const & bufparams = cur.buffer().params();
761 current_font = par.getFontSettings(bufparams, pos);
762 real_current_font = getFont(par, pos);
764 if (cur.pos() == cur.lastpos()
765 && bidi.isBoundary(cur.buffer(), par, cur.pos())
766 && !cur.boundary()) {
767 Language const * lang = par.getParLanguage(bufparams);
768 current_font.setLanguage(lang);
769 current_font.setNumber(LyXFont::OFF);
770 real_current_font.setLanguage(lang);
771 real_current_font.setNumber(LyXFont::OFF);
776 // x is an absolute screen coord
777 // returns the column near the specified x-coordinate of the row
778 // x is set to the real beginning of this column
779 pos_type LyXText::getColumnNearX(pit_type const pit,
780 Row const & row, int & x, bool & boundary) const
782 int const xo = bv()->coordCache().get(this, pit).x_;
784 RowMetrics const r = computeRowMetrics(pit, row);
785 Paragraph const & par = pars_[pit];
787 pos_type vc = row.pos();
788 pos_type end = row.endpos();
790 LyXLayout_ptr const & layout = par.layout();
792 bool left_side = false;
794 pos_type body_pos = par.beginOfBody();
797 double last_tmpx = tmpx;
800 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
803 // check for empty row
809 lyx::frontend::FontMetrics const & fm
810 = theFontMetrics(getLabelFont(par));
812 while (vc < end && tmpx <= x) {
813 c = bidi.vis2log(vc);
815 if (body_pos > 0 && c == body_pos - 1) {
817 docstring const lsep = lyx::from_utf8(layout->labelsep);
818 tmpx += r.label_hfill + fm.width(lsep);
819 if (par.isLineSeparator(body_pos - 1))
820 tmpx -= singleWidth(par, body_pos - 1);
823 if (hfillExpansion(par, row, c)) {
824 tmpx += singleWidth(par, c);
828 tmpx += r.label_hfill;
829 } else if (par.isSeparator(c)) {
830 tmpx += singleWidth(par, c);
834 tmpx += singleWidth(par, c);
839 if ((tmpx + last_tmpx) / 2 > x) {
844 BOOST_ASSERT(vc <= end); // This shouldn't happen.
847 // This (rtl_support test) is not needed, but gives
848 // some speedup if rtl_support == false
849 bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
851 // If lastrow is false, we don't need to compute
853 bool const rtl = lastrow ? isRTL(par) : false;
855 ((rtl && left_side && vc == row.pos() && x < tmpx - 5) ||
856 (!rtl && !left_side && vc == end && x > tmpx + 5)))
858 else if (vc == row.pos()) {
859 c = bidi.vis2log(vc);
860 if (bidi.level(c) % 2 == 1)
863 c = bidi.vis2log(vc - 1);
864 bool const rtl = (bidi.level(c) % 2 == 1);
865 if (left_side == rtl) {
867 boundary = bidi.isBoundary(*bv()->buffer(), par, c);
871 // I believe this code is not needed anymore (Jug 20050717)
873 // The following code is necessary because the cursor position past
874 // the last char in a row is logically equivalent to that before
875 // the first char in the next row. That's why insets causing row
876 // divisions -- Newline and display-style insets -- must be treated
877 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
878 // Newline inset, air gap below:
879 if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
880 if (bidi.level(end -1) % 2 == 0)
881 tmpx -= singleWidth(par, end - 1);
883 tmpx += singleWidth(par, end - 1);
887 // Air gap above display inset:
888 if (row.pos() < end && c >= end && end < par.size()
889 && par.isInset(end) && par.getInset(end)->display()) {
892 // Air gap below display inset:
893 if (row.pos() < end && c >= end && par.isInset(end - 1)
894 && par.getInset(end - 1)->display()) {
900 pos_type const col = c - row.pos();
902 if (!c || end == par.size())
905 if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
910 return min(col, end - 1 - row.pos());
914 // y is screen coordinate
915 pit_type LyXText::getPitNearY(int y) const
917 BOOST_ASSERT(!paragraphs().empty());
918 BOOST_ASSERT(bv()->coordCache().getParPos().find(this) != bv()->coordCache().getParPos().end());
919 CoordCache::InnerParPosCache const & cc = bv()->coordCache().getParPos().find(this)->second;
921 << BOOST_CURRENT_FUNCTION
922 << ": y: " << y << " cache size: " << cc.size()
925 // look for highest numbered paragraph with y coordinate less than given y
928 CoordCache::InnerParPosCache::const_iterator it = cc.begin();
929 CoordCache::InnerParPosCache::const_iterator et = cc.end();
930 for (; it != et; ++it) {
932 << BOOST_CURRENT_FUNCTION
933 << " examining: pit: " << it->first
934 << " y: " << it->second.y_
937 if (it->first >= pit && int(it->second.y_) - int(pars_[it->first].ascent()) <= y) {
944 << BOOST_CURRENT_FUNCTION
945 << ": found best y: " << yy << " for pit: " << pit
952 Row const & LyXText::getRowNearY(int y, pit_type pit) const
954 Paragraph const & par = pars_[pit];
955 int yy = bv()->coordCache().get(this, pit).y_ - par.ascent();
956 BOOST_ASSERT(!par.rows().empty());
957 RowList::const_iterator rit = par.rows().begin();
958 RowList::const_iterator const rlast = boost::prior(par.rows().end());
959 for (; rit != rlast; yy += rit->height(), ++rit)
960 if (yy + rit->height() > y)
966 // x,y are absolute screen coordinates
967 // sets cursor recursively descending into nested editable insets
968 InsetBase * LyXText::editXY(LCursor & cur, int x, int y)
970 pit_type pit = getPitNearY(y);
971 BOOST_ASSERT(pit != -1);
972 Row const & row = getRowNearY(y, pit);
975 int xx = x; // is modified by getColumnNearX
976 pos_type const pos = row.pos() + getColumnNearX(pit, row, xx, bound);
982 // try to descend into nested insets
983 InsetBase * inset = checkInsetHit(x, y);
984 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
986 // Either we deconst editXY or better we move current_font
987 // and real_current_font to LCursor
992 // This should be just before or just behind the
993 // cursor position set above.
994 BOOST_ASSERT((pos != 0 && inset == pars_[pit].getInset(pos - 1))
995 || inset == pars_[pit].getInset(pos));
996 // Make sure the cursor points to the position before
998 if (inset == pars_[pit].getInset(pos - 1))
1000 inset = inset->editXY(cur, x, y);
1001 if (cur.top().text() == this)
1002 setCurrentFont(cur);
1007 bool LyXText::checkAndActivateInset(LCursor & cur, bool front)
1009 if (cur.selection())
1011 if (cur.pos() == cur.lastpos())
1013 InsetBase * inset = cur.nextInset();
1014 if (!isHighlyEditableInset(inset))
1016 inset->edit(cur, front);
1021 bool LyXText::cursorLeft(LCursor & cur)
1023 if (!cur.boundary() && cur.pos() > 0 &&
1024 cur.textRow().pos() == cur.pos() &&
1025 !cur.paragraph().isLineSeparator(cur.pos()-1) &&
1026 !cur.paragraph().isNewline(cur.pos()-1)) {
1027 return setCursor(cur, cur.pit(), cur.pos(), true, true);
1029 if (cur.pos() != 0) {
1030 bool boundary = cur.boundary();
1031 bool updateNeeded = setCursor(cur, cur.pit(), cur.pos() - 1, true, false);
1032 if (!checkAndActivateInset(cur, false)) {
1033 if (false && !boundary &&
1034 bidi.isBoundary(cur.buffer(), cur.paragraph(), cur.pos() + 1))
1036 setCursor(cur, cur.pit(), cur.pos() + 1, true, true);
1038 return updateNeeded;
1041 if (cur.pit() != 0) {
1042 // Steps into the paragraph above
1043 return setCursor(cur, cur.pit() - 1, getPar(cur.pit() - 1).size());
1049 bool LyXText::cursorRight(LCursor & cur)
1051 if (cur.pos() != cur.lastpos()) {
1053 return setCursor(cur, cur.pit(), cur.pos(),
1056 bool updateNeeded = false;
1057 if (!checkAndActivateInset(cur, true)) {
1058 if (cur.textRow().endpos() == cur.pos() + 1 &&
1059 cur.textRow().endpos() != cur.lastpos() &&
1060 !cur.paragraph().isLineSeparator(cur.pos()) &&
1061 !cur.paragraph().isNewline(cur.pos())) {
1064 updateNeeded |= setCursor(cur, cur.pit(), cur.pos() + 1, true, cur.boundary());
1065 if (false && bidi.isBoundary(cur.buffer(), cur.paragraph(),
1067 updateNeeded |= setCursor(cur, cur.pit(), cur.pos(), true, true);
1069 return updateNeeded;
1072 if (cur.pit() != cur.lastpit())
1073 return setCursor(cur, cur.pit() + 1, 0);
1078 bool LyXText::cursorUp(LCursor & cur)
1080 Paragraph const & par = cur.paragraph();
1082 int const x = cur.targetX();
1084 if (cur.pos() && cur.boundary())
1085 row = par.pos2row(cur.pos()-1);
1087 row = par.pos2row(cur.pos());
1089 if (!cur.selection()) {
1090 int const y = bv_funcs::getPos(cur.bv(), cur, cur.boundary()).y_;
1092 // Go to middle of previous row. 16 found to work OK;
1093 // 12 = top/bottom margin of display math
1094 int const margin = 3 * InsetMathHull::displayMargin() / 2;
1095 editXY(cur, x, y - par.rows()[row].ascent() - margin);
1096 cur.clearSelection();
1098 // This happens when you move out of an inset.
1099 // And to give the DEPM the possibility of doing
1100 // something we must provide it with two different
1102 LCursor dummy = cur;
1106 return deleteEmptyParagraphMechanism(dummy, old);
1109 bool updateNeeded = false;
1112 updateNeeded |= setCursor(cur, cur.pit(),
1113 x2pos(cur.pit(), row - 1, x));
1114 } else if (cur.pit() > 0) {
1116 //cannot use 'par' now
1117 updateNeeded |= setCursor(cur, cur.pit(),
1118 x2pos(cur.pit(), cur.paragraph().rows().size() - 1, x));
1123 return updateNeeded;
1127 bool LyXText::cursorDown(LCursor & cur)
1129 Paragraph const & par = cur.paragraph();
1131 int const x = cur.targetX();
1133 if (cur.pos() && cur.boundary())
1134 row = par.pos2row(cur.pos()-1);
1136 row = par.pos2row(cur.pos());
1138 if (!cur.selection()) {
1139 int const y = bv_funcs::getPos(cur.bv(), cur, cur.boundary()).y_;
1141 // To middle of next row
1142 int const margin = 3 * InsetMathHull::displayMargin() / 2;
1143 editXY(cur, x, y + par.rows()[row].descent() + margin);
1144 cur.clearSelection();
1146 // This happens when you move out of an inset.
1147 // And to give the DEPM the possibility of doing
1148 // something we must provide it with two different
1150 LCursor dummy = cur;
1154 bool const changed = deleteEmptyParagraphMechanism(dummy, old);
1156 // Make sure that cur gets back whatever happened to dummy(Lgb)
1163 bool updateNeeded = false;
1165 if (row + 1 < int(par.rows().size())) {
1166 updateNeeded |= setCursor(cur, cur.pit(),
1167 x2pos(cur.pit(), row + 1, x));
1168 } else if (cur.pit() + 1 < int(paragraphs().size())) {
1170 updateNeeded |= setCursor(cur, cur.pit(),
1171 x2pos(cur.pit(), 0, x));
1176 return updateNeeded;
1180 bool LyXText::cursorUpParagraph(LCursor & cur)
1182 bool updated = false;
1184 updated = setCursor(cur, cur.pit(), 0);
1185 else if (cur.pit() != 0)
1186 updated = setCursor(cur, cur.pit() - 1, 0);
1191 bool LyXText::cursorDownParagraph(LCursor & cur)
1193 bool updated = false;
1194 if (cur.pit() != cur.lastpit())
1195 updated = setCursor(cur, cur.pit() + 1, 0);
1197 updated = setCursor(cur, cur.pit(), cur.lastpos());
1202 // fix the cursor `cur' after a characters has been deleted at `where'
1203 // position. Called by deleteEmptyParagraphMechanism
1204 void LyXText::fixCursorAfterDelete(CursorSlice & cur, CursorSlice const & where)
1206 // Do nothing if cursor is not in the paragraph where the
1207 // deletion occured,
1208 if (cur.pit() != where.pit())
1211 // If cursor position is after the deletion place update it
1212 if (cur.pos() > where.pos())
1215 // Check also if we don't want to set the cursor on a spot behind the
1216 // pagragraph because we erased the last character.
1217 if (cur.pos() > cur.lastpos())
1218 cur.pos() = cur.lastpos();
1222 bool LyXText::deleteEmptyParagraphMechanism(LCursor & cur, LCursor & old)
1224 // Would be wrong to delete anything if we have a selection.
1225 if (cur.selection())
1228 //lyxerr[Debug::DEBUG] << "DEPM: cur:\n" << cur << "old:\n" << old << endl;
1229 // old should point to us
1230 BOOST_ASSERT(old.text() == this);
1232 Paragraph & oldpar = old.paragraph();
1234 // We allow all kinds of "mumbo-jumbo" when freespacing.
1235 if (oldpar.isFreeSpacing())
1238 /* Ok I'll put some comments here about what is missing.
1239 There are still some small problems that can lead to
1240 double spaces stored in the document file or space at
1241 the beginning of paragraphs(). This happens if you have
1242 the cursor between to spaces and then save. Or if you
1243 cut and paste and the selection have a space at the
1244 beginning and then save right after the paste. (Lgb)
1247 // If old.pos() == 0 and old.pos()(1) == LineSeparator
1248 // delete the LineSeparator.
1251 // If old.pos() == 1 and old.pos()(0) == LineSeparator
1252 // delete the LineSeparator.
1255 bool const same_inset = &old.inset() == &cur.inset();
1256 bool const same_par = same_inset && old.pit() == cur.pit();
1257 bool const same_par_pos = same_par && old.pos() == cur.pos();
1259 // If the chars around the old cursor were spaces, delete one of them.
1260 if (!same_par_pos) {
1261 // Only if the cursor has really moved.
1263 && old.pos() < oldpar.size()
1264 && oldpar.isLineSeparator(old.pos())
1265 && oldpar.isLineSeparator(old.pos() - 1)
1266 && oldpar.lookupChange(old.pos() - 1).type != Change::DELETED) {
1267 oldpar.erase(old.pos() - 1, false); // do not track changes in DEPM
1268 #ifdef WITH_WARNINGS
1269 #warning This will not work anymore when we have multiple views of the same buffer
1270 // In this case, we will have to correct also the cursors held by
1271 // other bufferviews. It will probably be easier to do that in a more
1272 // automated way in CursorSlice code. (JMarc 26/09/2001)
1274 // correct all cursor parts
1276 fixCursorAfterDelete(cur.top(), old.top());
1283 // only do our magic if we changed paragraph
1287 // don't delete anything if this is the ONLY paragraph!
1288 if (old.lastpit() == 0)
1291 // Do not delete empty paragraphs with keepempty set.
1292 if (oldpar.allowEmpty())
1295 if (oldpar.empty() || (oldpar.size() == 1 && oldpar.isLineSeparator(0))) {
1297 recordUndo(old, Undo::ATOMIC,
1298 max(old.pit() - 1, pit_type(0)),
1299 min(old.pit() + 1, old.lastpit()));
1300 ParagraphList & plist = old.text()->paragraphs();
1301 plist.erase(boost::next(plist.begin(), old.pit()));
1303 // see #warning above
1304 if (cur.depth() >= old.depth()) {
1305 CursorSlice & curslice = cur[old.depth() - 1];
1306 if (&curslice.inset() == &old.inset()
1307 && curslice.pit() > old.pit()) {
1309 // since a paragraph has been deleted, all the
1310 // insets after `old' have been copied and
1311 // their address has changed. Therefore we
1312 // need to `regenerate' cur. (JMarc)
1313 cur.updateInsets(&(cur.bottom().inset()));
1317 // There is a crash reported by Edwin Leuven (16/04/2006) because of:
1318 //ParIterator par_it(old);
1319 //updateLabels(old.buffer(), par_it);
1320 // So for now we do the full update:
1321 updateLabels(old.buffer());
1325 if (oldpar.stripLeadingSpaces())
1332 void LyXText::recUndo(pit_type first, pit_type last) const
1334 recordUndo(bv()->cursor(), Undo::ATOMIC, first, last);
1338 void LyXText::recUndo(pit_type par) const
1340 recordUndo(bv()->cursor(), Undo::ATOMIC, par, par);
1344 int defaultRowHeight()
1346 return int(theFontMetrics(LyXFont(LyXFont::ALL_SANE)).maxHeight() * 1.2);