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/Application.h"
54 #include "frontends/font_metrics.h"
56 #include "insets/insetenv.h"
58 #include "mathed/InsetMathHull.h"
60 #include "support/textutils.h"
62 #include <boost/current_function.hpp>
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 (theCoords.getInsets().has(inset))
134 << BOOST_CURRENT_FUNCTION
135 << ": xo: " << inset->xo() << "..."
136 << inset->xo() + inset->width()
137 << " yo: " << inset->yo() - inset->ascent()
139 << inset->yo() + inset->descent()
143 << BOOST_CURRENT_FUNCTION
144 << ": inset has no cached position" << endl;
146 if (inset->covers(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 theApp->lyxFunc().dispatch(FuncRequest(LFUN_LINE_BEGIN));
374 theApp->lyxFunc().dispatch(FuncRequest(LFUN_LINE_END_SELECT));
375 theApp->lyxFunc().dispatch(FuncRequest(LFUN_CUT));
376 InsetBase * inset = new InsetEnvironment(params, layout);
377 insertInset(cur, inset);
378 //inset->edit(cur, true);
379 //theApp->lyxFunc().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);
655 // needed to insert the selection
656 void LyXText::insertStringAsLines(LCursor & cur, docstring const & str)
658 cur.buffer().insertStringAsLines(pars_, cur.pit(), cur.pos(),
659 current_font, str, autoBreakRows_);
663 // turn double CR to single CR, others are converted into one
664 // blank. Then insertStringAsLines is called
665 void LyXText::insertStringAsParagraphs(LCursor & cur, docstring const & str)
667 docstring linestr = str;
668 bool newline_inserted = false;
670 for (string::size_type i = 0, siz = linestr.size(); i < siz; ++i) {
671 if (linestr[i] == '\n') {
672 if (newline_inserted) {
673 // we know that \r will be ignored by
674 // insertStringAsLines. Of course, it is a dirty
675 // trick, but it works...
676 linestr[i - 1] = '\r';
680 newline_inserted = true;
682 } else if (isPrintable(linestr[i])) {
683 newline_inserted = false;
686 insertStringAsLines(cur, linestr);
690 bool LyXText::setCursor(LCursor & cur, pit_type par, pos_type pos,
691 bool setfont, bool boundary)
694 setCursorIntern(cur, par, pos, setfont, boundary);
695 return deleteEmptyParagraphMechanism(cur, old);
699 void LyXText::setCursor(CursorSlice & cur, pit_type par, pos_type pos)
701 BOOST_ASSERT(par != int(paragraphs().size()));
705 // now some strict checking
706 Paragraph & para = getPar(par);
708 // None of these should happen, but we're scaredy-cats
710 lyxerr << "dont like -1" << endl;
714 if (pos > para.size()) {
715 lyxerr << "dont like 1, pos: " << pos
716 << " size: " << para.size()
717 << " par: " << par << endl;
723 void LyXText::setCursorIntern(LCursor & cur,
724 pit_type par, pos_type pos, bool setfont, bool boundary)
726 BOOST_ASSERT(this == cur.text());
727 cur.boundary(boundary);
728 setCursor(cur.top(), par, pos);
735 void LyXText::setCurrentFont(LCursor & cur)
737 BOOST_ASSERT(this == cur.text());
738 pos_type pos = cur.pos();
739 Paragraph & par = cur.paragraph();
741 if (cur.boundary() && pos > 0)
745 if (pos == cur.lastpos())
747 else // potentional bug... BUG (Lgb)
748 if (par.isSeparator(pos)) {
749 if (pos > cur.textRow().pos() &&
750 bidi.level(pos) % 2 ==
751 bidi.level(pos - 1) % 2)
753 else if (pos + 1 < cur.lastpos())
758 BufferParams const & bufparams = cur.buffer().params();
759 current_font = par.getFontSettings(bufparams, pos);
760 real_current_font = getFont(par, pos);
762 if (cur.pos() == cur.lastpos()
763 && bidi.isBoundary(cur.buffer(), par, cur.pos())
764 && !cur.boundary()) {
765 Language const * lang = par.getParLanguage(bufparams);
766 current_font.setLanguage(lang);
767 current_font.setNumber(LyXFont::OFF);
768 real_current_font.setLanguage(lang);
769 real_current_font.setNumber(LyXFont::OFF);
774 // x is an absolute screen coord
775 // returns the column near the specified x-coordinate of the row
776 // x is set to the real beginning of this column
777 pos_type LyXText::getColumnNearX(pit_type const pit,
778 Row const & row, int & x, bool & boundary) const
780 int const xo = theCoords.get(this, pit).x_;
782 RowMetrics const r = computeRowMetrics(pit, row);
783 Paragraph const & par = pars_[pit];
785 pos_type vc = row.pos();
786 pos_type end = row.endpos();
788 LyXLayout_ptr const & layout = par.layout();
790 bool left_side = false;
792 pos_type body_pos = par.beginOfBody();
795 double last_tmpx = tmpx;
798 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
801 // check for empty row
807 while (vc < end && tmpx <= x) {
808 c = bidi.vis2log(vc);
810 if (body_pos > 0 && c == body_pos - 1) {
811 string lsep = layout->labelsep;
812 docstring dlsep(lsep.begin(), lsep.end());
813 tmpx += r.label_hfill +
814 font_metrics::width(dlsep, getLabelFont(par));
815 if (par.isLineSeparator(body_pos - 1))
816 tmpx -= singleWidth(par, body_pos - 1);
819 if (hfillExpansion(par, row, c)) {
820 tmpx += singleWidth(par, c);
824 tmpx += r.label_hfill;
825 } else if (par.isSeparator(c)) {
826 tmpx += singleWidth(par, c);
830 tmpx += singleWidth(par, c);
835 if ((tmpx + last_tmpx) / 2 > x) {
840 BOOST_ASSERT(vc <= end); // This shouldn't happen.
843 // This (rtl_support test) is not needed, but gives
844 // some speedup if rtl_support == false
845 bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
847 // If lastrow is false, we don't need to compute
849 bool const rtl = lastrow ? isRTL(par) : false;
851 ((rtl && left_side && vc == row.pos() && x < tmpx - 5) ||
852 (!rtl && !left_side && vc == end && x > tmpx + 5)))
854 else if (vc == row.pos()) {
855 c = bidi.vis2log(vc);
856 if (bidi.level(c) % 2 == 1)
859 c = bidi.vis2log(vc - 1);
860 bool const rtl = (bidi.level(c) % 2 == 1);
861 if (left_side == rtl) {
863 boundary = bidi.isBoundary(*bv()->buffer(), par, c);
867 // I believe this code is not needed anymore (Jug 20050717)
869 // The following code is necessary because the cursor position past
870 // the last char in a row is logically equivalent to that before
871 // the first char in the next row. That's why insets causing row
872 // divisions -- Newline and display-style insets -- must be treated
873 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
874 // Newline inset, air gap below:
875 if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
876 if (bidi.level(end -1) % 2 == 0)
877 tmpx -= singleWidth(par, end - 1);
879 tmpx += singleWidth(par, end - 1);
883 // Air gap above display inset:
884 if (row.pos() < end && c >= end && end < par.size()
885 && par.isInset(end) && par.getInset(end)->display()) {
888 // Air gap below display inset:
889 if (row.pos() < end && c >= end && par.isInset(end - 1)
890 && par.getInset(end - 1)->display()) {
896 pos_type const col = c - row.pos();
898 if (!c || end == par.size())
901 if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
906 return min(col, end - 1 - row.pos());
910 // y is screen coordinate
911 pit_type LyXText::getPitNearY(int y) const
913 BOOST_ASSERT(!paragraphs().empty());
914 BOOST_ASSERT(theCoords.getParPos().find(this) != theCoords.getParPos().end());
915 CoordCache::InnerParPosCache const & cc = theCoords.getParPos().find(this)->second;
917 << BOOST_CURRENT_FUNCTION
918 << ": y: " << y << " cache size: " << cc.size()
921 // look for highest numbered paragraph with y coordinate less than given y
924 CoordCache::InnerParPosCache::const_iterator it = cc.begin();
925 CoordCache::InnerParPosCache::const_iterator et = cc.end();
926 for (; it != et; ++it) {
928 << BOOST_CURRENT_FUNCTION
929 << " examining: pit: " << it->first
930 << " y: " << it->second.y_
933 if (it->first >= pit && int(it->second.y_) - int(pars_[it->first].ascent()) <= y) {
940 << BOOST_CURRENT_FUNCTION
941 << ": found best y: " << yy << " for pit: " << pit
948 Row const & LyXText::getRowNearY(int y, pit_type pit) const
950 Paragraph const & par = pars_[pit];
951 int yy = theCoords.get(this, pit).y_ - par.ascent();
952 BOOST_ASSERT(!par.rows().empty());
953 RowList::const_iterator rit = par.rows().begin();
954 RowList::const_iterator const rlast = boost::prior(par.rows().end());
955 for (; rit != rlast; yy += rit->height(), ++rit)
956 if (yy + rit->height() > y)
962 // x,y are absolute screen coordinates
963 // sets cursor recursively descending into nested editable insets
964 InsetBase * LyXText::editXY(LCursor & cur, int x, int y)
966 pit_type pit = getPitNearY(y);
967 BOOST_ASSERT(pit != -1);
968 Row const & row = getRowNearY(y, pit);
971 int xx = x; // is modified by getColumnNearX
972 pos_type const pos = row.pos() + getColumnNearX(pit, row, xx, bound);
978 // try to descend into nested insets
979 InsetBase * inset = checkInsetHit(x, y);
980 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
982 // Either we deconst editXY or better we move current_font
983 // and real_current_font to LCursor
988 // This should be just before or just behind the
989 // cursor position set above.
990 BOOST_ASSERT((pos != 0 && inset == pars_[pit].getInset(pos - 1))
991 || inset == pars_[pit].getInset(pos));
992 // Make sure the cursor points to the position before
994 if (inset == pars_[pit].getInset(pos - 1))
996 inset = inset->editXY(cur, x, y);
997 if (cur.top().text() == this)
1003 bool LyXText::checkAndActivateInset(LCursor & cur, bool front)
1005 if (cur.selection())
1007 if (cur.pos() == cur.lastpos())
1009 InsetBase * inset = cur.nextInset();
1010 if (!isHighlyEditableInset(inset))
1012 inset->edit(cur, front);
1017 bool LyXText::cursorLeft(LCursor & cur)
1019 if (!cur.boundary() && cur.pos() > 0 &&
1020 cur.textRow().pos() == cur.pos() &&
1021 !cur.paragraph().isLineSeparator(cur.pos()-1) &&
1022 !cur.paragraph().isNewline(cur.pos()-1)) {
1023 return setCursor(cur, cur.pit(), cur.pos(), true, true);
1025 if (cur.pos() != 0) {
1026 bool boundary = cur.boundary();
1027 bool updateNeeded = setCursor(cur, cur.pit(), cur.pos() - 1, true, false);
1028 if (!checkAndActivateInset(cur, false)) {
1029 if (false && !boundary &&
1030 bidi.isBoundary(cur.buffer(), cur.paragraph(), cur.pos() + 1))
1032 setCursor(cur, cur.pit(), cur.pos() + 1, true, true);
1034 return updateNeeded;
1037 if (cur.pit() != 0) {
1038 // Steps into the paragraph above
1039 return setCursor(cur, cur.pit() - 1, getPar(cur.pit() - 1).size());
1045 bool LyXText::cursorRight(LCursor & cur)
1047 if (cur.pos() != cur.lastpos()) {
1049 return setCursor(cur, cur.pit(), cur.pos(),
1052 bool updateNeeded = false;
1053 if (!checkAndActivateInset(cur, true)) {
1054 if (cur.textRow().endpos() == cur.pos() + 1 &&
1055 cur.textRow().endpos() != cur.lastpos() &&
1056 !cur.paragraph().isLineSeparator(cur.pos()) &&
1057 !cur.paragraph().isNewline(cur.pos())) {
1060 updateNeeded |= setCursor(cur, cur.pit(), cur.pos() + 1, true, cur.boundary());
1061 if (false && bidi.isBoundary(cur.buffer(), cur.paragraph(),
1063 updateNeeded |= setCursor(cur, cur.pit(), cur.pos(), true, true);
1065 return updateNeeded;
1068 if (cur.pit() != cur.lastpit())
1069 return setCursor(cur, cur.pit() + 1, 0);
1074 bool LyXText::cursorUp(LCursor & cur)
1076 Paragraph const & par = cur.paragraph();
1078 int const x = cur.targetX();
1080 if (cur.pos() && cur.boundary())
1081 row = par.pos2row(cur.pos()-1);
1083 row = par.pos2row(cur.pos());
1085 if (!cur.selection()) {
1086 int const y = bv_funcs::getPos(cur, cur.boundary()).y_;
1088 // Go to middle of previous row. 16 found to work OK;
1089 // 12 = top/bottom margin of display math
1090 int const margin = 3 * InsetMathHull::displayMargin() / 2;
1091 editXY(cur, x, y - par.rows()[row].ascent() - margin);
1092 cur.clearSelection();
1094 // This happens when you move out of an inset.
1095 // And to give the DEPM the possibility of doing
1096 // something we must provide it with two different
1098 LCursor dummy = cur;
1102 return deleteEmptyParagraphMechanism(dummy, old);
1105 bool updateNeeded = false;
1108 updateNeeded |= setCursor(cur, cur.pit(),
1109 x2pos(cur.pit(), row - 1, x));
1110 } else if (cur.pit() > 0) {
1112 //cannot use 'par' now
1113 updateNeeded |= setCursor(cur, cur.pit(),
1114 x2pos(cur.pit(), cur.paragraph().rows().size() - 1, x));
1119 return updateNeeded;
1123 bool LyXText::cursorDown(LCursor & cur)
1125 Paragraph const & par = cur.paragraph();
1127 int const x = cur.targetX();
1129 if (cur.pos() && cur.boundary())
1130 row = par.pos2row(cur.pos()-1);
1132 row = par.pos2row(cur.pos());
1134 if (!cur.selection()) {
1135 int const y = bv_funcs::getPos(cur, cur.boundary()).y_;
1137 // To middle of next row
1138 int const margin = 3 * InsetMathHull::displayMargin() / 2;
1139 editXY(cur, x, y + par.rows()[row].descent() + margin);
1140 cur.clearSelection();
1142 // This happens when you move out of an inset.
1143 // And to give the DEPM the possibility of doing
1144 // something we must provide it with two different
1146 LCursor dummy = cur;
1150 bool const changed = deleteEmptyParagraphMechanism(dummy, old);
1152 // Make sure that cur gets back whatever happened to dummy(Lgb)
1159 bool updateNeeded = false;
1161 if (row + 1 < int(par.rows().size())) {
1162 updateNeeded |= setCursor(cur, cur.pit(),
1163 x2pos(cur.pit(), row + 1, x));
1164 } else if (cur.pit() + 1 < int(paragraphs().size())) {
1166 updateNeeded |= setCursor(cur, cur.pit(),
1167 x2pos(cur.pit(), 0, x));
1172 return updateNeeded;
1176 bool LyXText::cursorUpParagraph(LCursor & cur)
1178 bool updated = false;
1180 updated = setCursor(cur, cur.pit(), 0);
1181 else if (cur.pit() != 0)
1182 updated = setCursor(cur, cur.pit() - 1, 0);
1187 bool LyXText::cursorDownParagraph(LCursor & cur)
1189 bool updated = false;
1190 if (cur.pit() != cur.lastpit())
1191 updated = setCursor(cur, cur.pit() + 1, 0);
1193 updated = setCursor(cur, cur.pit(), cur.lastpos());
1198 // fix the cursor `cur' after a characters has been deleted at `where'
1199 // position. Called by deleteEmptyParagraphMechanism
1200 void LyXText::fixCursorAfterDelete(CursorSlice & cur, CursorSlice const & where)
1202 // Do nothing if cursor is not in the paragraph where the
1203 // deletion occured,
1204 if (cur.pit() != where.pit())
1207 // If cursor position is after the deletion place update it
1208 if (cur.pos() > where.pos())
1211 // Check also if we don't want to set the cursor on a spot behind the
1212 // pagragraph because we erased the last character.
1213 if (cur.pos() > cur.lastpos())
1214 cur.pos() = cur.lastpos();
1218 bool LyXText::deleteEmptyParagraphMechanism(LCursor & cur, LCursor & old)
1220 // Would be wrong to delete anything if we have a selection.
1221 if (cur.selection())
1224 //lyxerr[Debug::DEBUG] << "DEPM: cur:\n" << cur << "old:\n" << old << endl;
1225 // old should point to us
1226 BOOST_ASSERT(old.text() == this);
1228 Paragraph & oldpar = old.paragraph();
1230 // We allow all kinds of "mumbo-jumbo" when freespacing.
1231 if (oldpar.isFreeSpacing())
1234 /* Ok I'll put some comments here about what is missing.
1235 There are still some small problems that can lead to
1236 double spaces stored in the document file or space at
1237 the beginning of paragraphs(). This happens if you have
1238 the cursor between to spaces and then save. Or if you
1239 cut and paste and the selection have a space at the
1240 beginning and then save right after the paste. (Lgb)
1243 // If old.pos() == 0 and old.pos()(1) == LineSeparator
1244 // delete the LineSeparator.
1247 // If old.pos() == 1 and old.pos()(0) == LineSeparator
1248 // delete the LineSeparator.
1251 bool const same_inset = &old.inset() == &cur.inset();
1252 bool const same_par = same_inset && old.pit() == cur.pit();
1253 bool const same_par_pos = same_par && old.pos() == cur.pos();
1255 // If the chars around the old cursor were spaces, delete one of them.
1256 if (!same_par_pos) {
1257 // Only if the cursor has really moved.
1259 && old.pos() < oldpar.size()
1260 && oldpar.isLineSeparator(old.pos())
1261 && oldpar.isLineSeparator(old.pos() - 1)
1262 && oldpar.lookupChange(old.pos() - 1) != Change::DELETED) {
1263 // We need to set the text to Change::INSERTED to
1264 // get it erased properly
1265 oldpar.setChange(old.pos() -1, Change::INSERTED);
1266 oldpar.erase(old.pos() - 1);
1267 #ifdef WITH_WARNINGS
1268 #warning This will not work anymore when we have multiple views of the same buffer
1269 // In this case, we will have to correct also the cursors held by
1270 // other bufferviews. It will probably be easier to do that in a more
1271 // automated way in CursorSlice code. (JMarc 26/09/2001)
1273 // correct all cursor parts
1275 fixCursorAfterDelete(cur.top(), old.top());
1282 // only do our magic if we changed paragraph
1286 // don't delete anything if this is the ONLY paragraph!
1287 if (old.lastpit() == 0)
1290 // Do not delete empty paragraphs with keepempty set.
1291 if (oldpar.allowEmpty())
1294 if (oldpar.empty() || (oldpar.size() == 1 && oldpar.isLineSeparator(0))) {
1296 recordUndo(old, Undo::ATOMIC,
1297 max(old.pit() - 1, pit_type(0)),
1298 min(old.pit() + 1, old.lastpit()));
1299 ParagraphList & plist = old.text()->paragraphs();
1300 plist.erase(boost::next(plist.begin(), old.pit()));
1302 // see #warning above
1303 if (cur.depth() >= old.depth()) {
1304 CursorSlice & curslice = cur[old.depth() - 1];
1305 if (&curslice.inset() == &old.inset()
1306 && curslice.pit() > old.pit()) {
1308 // since a paragraph has been deleted, all the
1309 // insets after `old' have been copied and
1310 // their address has changed. Therefore we
1311 // need to `regenerate' cur. (JMarc)
1312 cur.updateInsets(&(cur.bottom().inset()));
1316 // There is a crash reported by Edwin Leuven (16/04/2006) because of:
1317 //ParIterator par_it(old);
1318 //updateLabels(old.buffer(), par_it);
1319 // So for now we do the full update:
1320 updateLabels(old.buffer());
1324 if (oldpar.stripLeadingSpaces())
1331 void LyXText::recUndo(pit_type first, pit_type last) const
1333 recordUndo(bv()->cursor(), Undo::ATOMIC, first, last);
1337 void LyXText::recUndo(pit_type par) const
1339 recordUndo(bv()->cursor(), Undo::ATOMIC, par, par);
1343 int defaultRowHeight()
1345 return int(font_metrics::maxHeight(LyXFont(LyXFont::ALL_SANE)) * 1.2);