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 "paragraph.h"
44 #include "paragraph_funcs.h"
45 #include "ParagraphParameters.h"
46 #include "pariterator.h"
47 #include "lyxserver.h"
48 #include "lyxsocket.h"
52 #include "frontends/FontMetrics.h"
54 #include "insets/insetenv.h"
56 #include "mathed/InsetMathHull.h"
58 #include "support/textutils.h"
60 #include <boost/current_function.hpp>
68 using std::ostringstream;
74 LyXText::LyXText(BufferView * bv)
75 : maxwidth_(bv ? bv->workWidth() : 100),
76 current_font(LyXFont::ALL_INHERIT),
77 background_color_(LColor::background),
82 void LyXText::init(BufferView * bv)
85 maxwidth_ = bv->workWidth();
90 pit_type const end = paragraphs().size();
91 for (pit_type pit = 0; pit != end; ++pit)
92 pars_[pit].rows().clear();
94 updateLabels(*bv->buffer());
98 bool LyXText::isMainText(Buffer const & buffer) const
100 return &buffer.text() == this;
104 //takes screen x,y coordinates
105 InsetBase * LyXText::checkInsetHit(BufferView const & bv, int x, int y) const
107 pit_type pit = getPitNearY(bv, y);
108 BOOST_ASSERT(pit != -1);
110 Paragraph const & par = pars_[pit];
113 << BOOST_CURRENT_FUNCTION
118 InsetList::const_iterator iit = par.insetlist.begin();
119 InsetList::const_iterator iend = par.insetlist.end();
120 for (; iit != iend; ++iit) {
121 InsetBase * inset = iit->inset;
124 << BOOST_CURRENT_FUNCTION
125 << ": examining inset " << inset << endl;
127 if (bv.coordCache().getInsets().has(inset))
129 << BOOST_CURRENT_FUNCTION
130 << ": xo: " << inset->xo(bv) << "..."
131 << inset->xo(bv) + inset->width()
132 << " yo: " << inset->yo(bv) - inset->ascent()
134 << inset->yo(bv) + inset->descent()
138 << BOOST_CURRENT_FUNCTION
139 << ": inset has no cached position" << endl;
141 if (inset->covers(bv, x, y)) {
143 << BOOST_CURRENT_FUNCTION
144 << ": Hit inset: " << inset << endl;
149 << BOOST_CURRENT_FUNCTION
150 << ": No inset hit. " << endl;
156 // Gets the fully instantiated font at a given position in a paragraph
157 // Basically the same routine as Paragraph::getFont() in paragraph.C.
158 // The difference is that this one is used for displaying, and thus we
159 // are allowed to make cosmetic improvements. For instance make footnotes
161 LyXFont LyXText::getFont(Buffer const & buffer, Paragraph const & par,
162 pos_type const pos) const
164 BOOST_ASSERT(pos >= 0);
166 LyXLayout_ptr const & layout = par.layout();
170 BufferParams const & params = buffer.params();
171 pos_type const body_pos = par.beginOfBody();
173 // We specialize the 95% common case:
174 if (!par.getDepth()) {
175 LyXFont f = par.getFontSettings(params, pos);
176 if (!isMainText(buffer))
177 applyOuterFont(buffer, f);
180 if (layout->labeltype == LABEL_MANUAL && pos < body_pos) {
181 lf = layout->labelfont;
182 rlf = layout->reslabelfont;
185 rlf = layout->resfont;
187 // In case the default family has been customized
188 if (lf.family() == LyXFont::INHERIT_FAMILY)
189 rlf.setFamily(params.getFont().family());
190 return f.realize(rlf);
193 // The uncommon case need not be optimized as much
196 layoutfont = layout->labelfont;
198 layoutfont = layout->font;
200 LyXFont font = par.getFontSettings(params, pos);
201 font.realize(layoutfont);
203 if (!isMainText(buffer))
204 applyOuterFont(buffer, font);
206 // Find the pit value belonging to paragraph. This will not break
207 // even if pars_ would not be a vector anymore.
208 // Performance appears acceptable.
210 pit_type pit = pars_.size();
211 for (pit_type it = 0; it < pit; ++it)
212 if (&pars_[it] == &par) {
216 // Realize against environment font information
217 // NOTE: the cast to pit_type should be removed when pit_type
218 // changes to a unsigned integer.
219 if (pit < pit_type(pars_.size()))
220 font.realize(outerFont(pit, pars_));
222 // Realize with the fonts of lesser depth.
223 font.realize(params.getFont());
228 // There are currently two font mechanisms in LyX:
229 // 1. The font attributes in a lyxtext, and
230 // 2. The inset-specific font properties, defined in an inset's
231 // metrics() and draw() methods and handed down the inset chain through
232 // the pi/mi parameters, and stored locally in a lyxtext in font_.
233 // This is where the two are integrated in the final fully realized
235 void LyXText::applyOuterFont(Buffer const & buffer, LyXFont & font) const {
237 lf.reduce(buffer.params().getFont());
239 lf.setLanguage(font.language());
244 LyXFont LyXText::getLayoutFont(Buffer const & buffer, pit_type const pit) const
246 LyXLayout_ptr const & layout = pars_[pit].layout();
248 if (!pars_[pit].getDepth()) {
249 LyXFont lf = layout->resfont;
250 // In case the default family has been customized
251 if (layout->font.family() == LyXFont::INHERIT_FAMILY)
252 lf.setFamily(buffer.params().getFont().family());
256 LyXFont font = layout->font;
257 // Realize with the fonts of lesser depth.
258 //font.realize(outerFont(pit, paragraphs()));
259 font.realize(buffer.params().getFont());
265 LyXFont LyXText::getLabelFont(Buffer const & buffer, Paragraph const & par) const
267 LyXLayout_ptr const & layout = par.layout();
269 if (!par.getDepth()) {
270 LyXFont lf = layout->reslabelfont;
271 // In case the default family has been customized
272 if (layout->labelfont.family() == LyXFont::INHERIT_FAMILY)
273 lf.setFamily(buffer.params().getFont().family());
277 LyXFont font = layout->labelfont;
278 // Realize with the fonts of lesser depth.
279 font.realize(buffer.params().getFont());
285 void LyXText::setCharFont(Buffer const & buffer, pit_type pit,
286 pos_type pos, LyXFont const & fnt)
289 LyXLayout_ptr const & layout = pars_[pit].layout();
291 // Get concrete layout font to reduce against
294 if (pos < pars_[pit].beginOfBody())
295 layoutfont = layout->labelfont;
297 layoutfont = layout->font;
299 // Realize against environment font information
300 if (pars_[pit].getDepth()) {
302 while (!layoutfont.resolved() &&
303 tp != pit_type(paragraphs().size()) &&
304 pars_[tp].getDepth()) {
305 tp = outerHook(tp, paragraphs());
306 if (tp != pit_type(paragraphs().size()))
307 layoutfont.realize(pars_[tp].layout()->font);
311 // Inside inset, apply the inset's font attributes if any
313 if (!isMainText(buffer))
314 layoutfont.realize(font_);
316 layoutfont.realize(buffer.params().getFont());
318 // Now, reduce font against full layout font
319 font.reduce(layoutfont);
321 pars_[pit].setFont(pos, font);
325 // return past-the-last paragraph influenced by a layout change on pit
326 pit_type LyXText::undoSpan(pit_type pit)
328 pit_type end = paragraphs().size();
329 pit_type nextpit = pit + 1;
332 //because of parindents
333 if (!pars_[pit].getDepth())
334 return boost::next(nextpit);
335 //because of depth constrains
336 for (; nextpit != end; ++pit, ++nextpit) {
337 if (!pars_[pit].getDepth())
344 void LyXText::setLayout(Buffer const & buffer, pit_type start, pit_type end,
345 string const & layout)
347 BOOST_ASSERT(start != end);
349 BufferParams const & bufparams = buffer.params();
350 LyXLayout_ptr const & lyxlayout = bufparams.getLyXTextClass()[layout];
352 for (pit_type pit = start; pit != end; ++pit) {
353 pars_[pit].applyLayout(lyxlayout);
354 if (lyxlayout->margintype == MARGIN_MANUAL)
355 pars_[pit].setLabelWidthString(lyxlayout->labelstring());
360 // set layout over selection and make a total rebreak of those paragraphs
361 void LyXText::setLayout(LCursor & cur, string const & layout)
363 BOOST_ASSERT(this == cur.text());
364 // special handling of new environment insets
365 BufferView & bv = cur.bv();
366 BufferParams const & params = bv.buffer()->params();
367 LyXLayout_ptr const & lyxlayout = params.getLyXTextClass()[layout];
368 if (lyxlayout->is_environment) {
369 // move everything in a new environment inset
370 lyxerr[Debug::DEBUG] << "setting layout " << layout << endl;
371 lyx::dispatch(FuncRequest(LFUN_LINE_BEGIN));
372 lyx::dispatch(FuncRequest(LFUN_LINE_END_SELECT));
373 lyx::dispatch(FuncRequest(LFUN_CUT));
374 InsetBase * inset = new InsetEnvironment(params, layout);
375 insertInset(cur, inset);
376 //inset->edit(cur, true);
377 //lyx::dispatch(FuncRequest(LFUN_PASTE));
381 pit_type start = cur.selBegin().pit();
382 pit_type end = cur.selEnd().pit() + 1;
383 pit_type undopit = undoSpan(end - 1);
384 recUndo(cur, start, undopit - 1);
385 setLayout(cur.buffer(), start, end, layout);
386 updateLabels(cur.buffer());
390 static bool changeDepthAllowed(LyXText::DEPTH_CHANGE type,
391 Paragraph const & par, int max_depth)
393 if (par.layout()->labeltype == LABEL_BIBLIO)
395 int const depth = par.params().depth();
396 if (type == LyXText::INC_DEPTH && depth < max_depth)
398 if (type == LyXText::DEC_DEPTH && depth > 0)
404 bool LyXText::changeDepthAllowed(LCursor & cur, DEPTH_CHANGE type) const
406 BOOST_ASSERT(this == cur.text());
407 // this happens when selecting several cells in tabular (bug 2630)
408 if (cur.selBegin().idx() != cur.selEnd().idx())
411 pit_type const beg = cur.selBegin().pit();
412 pit_type const end = cur.selEnd().pit() + 1;
413 int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
415 for (pit_type pit = beg; pit != end; ++pit) {
416 if (lyx::changeDepthAllowed(type, pars_[pit], max_depth))
418 max_depth = pars_[pit].getMaxDepthAfter();
424 void LyXText::changeDepth(LCursor & cur, DEPTH_CHANGE type)
426 BOOST_ASSERT(this == cur.text());
427 pit_type const beg = cur.selBegin().pit();
428 pit_type const end = cur.selEnd().pit() + 1;
429 recordUndoSelection(cur);
430 int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
432 for (pit_type pit = beg; pit != end; ++pit) {
433 Paragraph & par = pars_[pit];
434 if (lyx::changeDepthAllowed(type, par, max_depth)) {
435 int const depth = par.params().depth();
436 if (type == INC_DEPTH)
437 par.params().depth(depth + 1);
439 par.params().depth(depth - 1);
441 max_depth = par.getMaxDepthAfter();
443 // this handles the counter labels, and also fixes up
444 // depth values for follow-on (child) paragraphs
445 updateLabels(cur.buffer());
449 // set font over selection
450 void LyXText::setFont(LCursor & cur, LyXFont const & font, bool toggleall)
452 BOOST_ASSERT(this == cur.text());
453 // if there is no selection just set the current_font
454 if (!cur.selection()) {
455 // Determine basis font
457 pit_type pit = cur.pit();
458 if (cur.pos() < pars_[pit].beginOfBody())
459 layoutfont = getLabelFont(cur.buffer(), pars_[pit]);
461 layoutfont = getLayoutFont(cur.buffer(), pit);
463 // Update current font
464 real_current_font.update(font,
465 cur.buffer().params().language,
468 // Reduce to implicit settings
469 current_font = real_current_font;
470 current_font.reduce(layoutfont);
471 // And resolve it completely
472 real_current_font.realize(layoutfont);
477 // Ok, we have a selection.
478 recordUndoSelection(cur);
480 DocIterator dit = cur.selectionBegin();
481 DocIterator ditend = cur.selectionEnd();
483 BufferParams const & params = cur.buffer().params();
485 // Don't use forwardChar here as ditend might have
486 // pos() == lastpos() and forwardChar would miss it.
487 // Can't use forwardPos either as this descends into
489 for (; dit != ditend; dit.forwardPosNoDescend()) {
490 if (dit.pos() != dit.lastpos()) {
491 LyXFont f = getFont(cur.buffer(), dit.paragraph(), dit.pos());
492 f.update(font, params.language, toggleall);
493 setCharFont(cur.buffer(), dit.pit(), dit.pos(), f);
499 // the cursor set functions have a special mechanism. When they
500 // realize you left an empty paragraph, they will delete it.
502 bool LyXText::cursorHome(LCursor & cur)
504 BOOST_ASSERT(this == cur.text());
505 Row const & row = cur.paragraph().getRow(cur.pos(),cur.boundary());
506 return setCursor(cur, cur.pit(), row.pos());
510 bool LyXText::cursorEnd(LCursor & cur)
512 BOOST_ASSERT(this == cur.text());
513 // if not on the last row of the par, put the cursor before
514 // the final space exept if I have a spanning inset or one string
515 // is so long that we force a break.
516 pos_type end = cur.textRow().endpos();
518 // empty text, end-1 is no valid position
520 bool boundary = false;
521 if (end != cur.lastpos()) {
522 if (!cur.paragraph().isLineSeparator(end-1)
523 && !cur.paragraph().isNewline(end-1))
528 return setCursor(cur, cur.pit(), end, true, boundary);
532 bool LyXText::cursorTop(LCursor & cur)
534 BOOST_ASSERT(this == cur.text());
535 return setCursor(cur, 0, 0);
539 bool LyXText::cursorBottom(LCursor & cur)
541 BOOST_ASSERT(this == cur.text());
542 return setCursor(cur, cur.lastpit(), boost::prior(paragraphs().end())->size());
546 void LyXText::toggleFree(LCursor & cur, LyXFont const & font, bool toggleall)
548 BOOST_ASSERT(this == cur.text());
549 // If the mask is completely neutral, tell user
550 if (font == LyXFont(LyXFont::ALL_IGNORE)) {
551 // Could only happen with user style
552 cur.message(_("No font change defined. "
553 "Use Character under the Layout menu to define font change."));
557 // Try implicit word selection
558 // If there is a change in the language the implicit word selection
560 CursorSlice resetCursor = cur.top();
561 bool implicitSelection =
562 font.language() == ignore_language
563 && font.number() == LyXFont::IGNORE
564 && selectWordWhenUnderCursor(cur, WHOLE_WORD_STRICT);
567 setFont(cur, font, toggleall);
569 // Implicit selections are cleared afterwards
570 // and cursor is set to the original position.
571 if (implicitSelection) {
572 cur.clearSelection();
573 cur.top() = resetCursor;
579 docstring LyXText::getStringToIndex(LCursor const & cur)
581 BOOST_ASSERT(this == cur.text());
585 idxstring = cur.selectionAsString(false);
587 // Try implicit word selection. If there is a change
588 // in the language the implicit word selection is
590 LCursor tmpcur = cur;
591 selectWord(tmpcur, PREVIOUS_WORD);
593 if (!tmpcur.selection())
594 cur.message(_("Nothing to index!"));
595 else if (tmpcur.selBegin().pit() != tmpcur.selEnd().pit())
596 cur.message(_("Cannot index more than one paragraph!"));
598 idxstring = tmpcur.selectionAsString(false);
605 void LyXText::setParagraph(LCursor & cur,
606 Spacing const & spacing, LyXAlignment align,
607 string const & labelwidthstring, bool noindent)
609 BOOST_ASSERT(cur.text());
610 // make sure that the depth behind the selection are restored, too
611 pit_type undopit = undoSpan(cur.selEnd().pit());
612 recUndo(cur, cur.selBegin().pit(), undopit - 1);
614 for (pit_type pit = cur.selBegin().pit(), end = cur.selEnd().pit();
616 Paragraph & par = pars_[pit];
617 ParagraphParameters & params = par.params();
618 params.spacing(spacing);
620 // does the layout allow the new alignment?
621 LyXLayout_ptr const & layout = par.layout();
623 if (align == LYX_ALIGN_LAYOUT)
624 align = layout->align;
625 if (align & layout->alignpossible) {
626 if (align == layout->align)
627 params.align(LYX_ALIGN_LAYOUT);
632 par.setLabelWidthString(from_ascii(labelwidthstring));
633 params.noindent(noindent);
638 // this really should just insert the inset and not move the cursor.
639 void LyXText::insertInset(LCursor & cur, InsetBase * inset)
641 BOOST_ASSERT(this == cur.text());
643 cur.paragraph().insertInset(cur.pos(), inset,
644 Change(cur.buffer().params().trackChanges ?
645 Change::INSERTED : Change::UNCHANGED));
649 // needed to insert the selection
650 void LyXText::insertStringAsLines(LCursor & cur, docstring const & str)
652 cur.buffer().insertStringAsLines(pars_, cur.pit(), cur.pos(),
653 current_font, str, autoBreakRows_);
657 // turn double CR to single CR, others are converted into one
658 // blank. Then insertStringAsLines is called
659 void LyXText::insertStringAsParagraphs(LCursor & cur, docstring const & str)
661 docstring linestr = str;
662 bool newline_inserted = false;
664 for (string::size_type i = 0, siz = linestr.size(); i < siz; ++i) {
665 if (linestr[i] == '\n') {
666 if (newline_inserted) {
667 // we know that \r will be ignored by
668 // insertStringAsLines. Of course, it is a dirty
669 // trick, but it works...
670 linestr[i - 1] = '\r';
674 newline_inserted = true;
676 } else if (isPrintable(linestr[i])) {
677 newline_inserted = false;
680 insertStringAsLines(cur, linestr);
684 bool LyXText::setCursor(LCursor & cur, pit_type par, pos_type pos,
685 bool setfont, bool boundary)
688 setCursorIntern(cur, par, pos, setfont, boundary);
689 return deleteEmptyParagraphMechanism(cur, old);
693 void LyXText::setCursor(CursorSlice & cur, pit_type par, pos_type pos)
695 BOOST_ASSERT(par != int(paragraphs().size()));
699 // now some strict checking
700 Paragraph & para = getPar(par);
702 // None of these should happen, but we're scaredy-cats
704 lyxerr << "dont like -1" << endl;
708 if (pos > para.size()) {
709 lyxerr << "dont like 1, pos: " << pos
710 << " size: " << para.size()
711 << " par: " << par << endl;
717 void LyXText::setCursorIntern(LCursor & cur,
718 pit_type par, pos_type pos, bool setfont, bool boundary)
720 BOOST_ASSERT(this == cur.text());
721 cur.boundary(boundary);
722 setCursor(cur.top(), par, pos);
729 void LyXText::setCurrentFont(LCursor & cur)
731 BOOST_ASSERT(this == cur.text());
732 pos_type pos = cur.pos();
733 Paragraph & par = cur.paragraph();
735 if (cur.boundary() && pos > 0)
739 if (pos == cur.lastpos())
741 else // potentional bug... BUG (Lgb)
742 if (par.isSeparator(pos)) {
743 if (pos > cur.textRow().pos() &&
744 bidi.level(pos) % 2 ==
745 bidi.level(pos - 1) % 2)
747 else if (pos + 1 < cur.lastpos())
752 BufferParams const & bufparams = cur.buffer().params();
753 current_font = par.getFontSettings(bufparams, pos);
754 real_current_font = getFont(cur.buffer(), par, pos);
756 if (cur.pos() == cur.lastpos()
757 && bidi.isBoundary(cur.buffer(), par, cur.pos())
758 && !cur.boundary()) {
759 Language const * lang = par.getParLanguage(bufparams);
760 current_font.setLanguage(lang);
761 current_font.setNumber(LyXFont::OFF);
762 real_current_font.setLanguage(lang);
763 real_current_font.setNumber(LyXFont::OFF);
768 // x is an absolute screen coord
769 // returns the column near the specified x-coordinate of the row
770 // x is set to the real beginning of this column
771 pos_type LyXText::getColumnNearX(BufferView const & bv, pit_type const pit,
772 Row const & row, int & x, bool & boundary) const
774 Buffer const & buffer = *bv.buffer();
775 int const xo = bv.coordCache().get(this, pit).x_;
777 RowMetrics const r = computeRowMetrics(buffer, pit, row);
778 Paragraph const & par = pars_[pit];
780 pos_type vc = row.pos();
781 pos_type end = row.endpos();
783 LyXLayout_ptr const & layout = par.layout();
785 bool left_side = false;
787 pos_type body_pos = par.beginOfBody();
790 double last_tmpx = tmpx;
793 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
796 // check for empty row
802 frontend::FontMetrics const & fm
803 = theFontMetrics(getLabelFont(buffer, par));
805 while (vc < end && tmpx <= x) {
806 c = bidi.vis2log(vc);
808 if (body_pos > 0 && c == body_pos - 1) {
810 docstring const lsep = from_utf8(layout->labelsep);
811 tmpx += r.label_hfill + fm.width(lsep);
812 if (par.isLineSeparator(body_pos - 1))
813 tmpx -= singleWidth(buffer, par, body_pos - 1);
816 if (par.hfillExpansion(row, c)) {
817 tmpx += singleWidth(buffer, par, c);
821 tmpx += r.label_hfill;
822 } else if (par.isSeparator(c)) {
823 tmpx += singleWidth(buffer, par, c);
827 tmpx += singleWidth(buffer, par, c);
832 if ((tmpx + last_tmpx) / 2 > x) {
837 BOOST_ASSERT(vc <= end); // This shouldn't happen.
840 // This (rtl_support test) is not needed, but gives
841 // some speedup if rtl_support == false
842 bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
844 // If lastrow is false, we don't need to compute
846 bool const rtl = lastrow ? isRTL(buffer, par) : false;
848 ((rtl && left_side && vc == row.pos() && x < tmpx - 5) ||
849 (!rtl && !left_side && vc == end && x > tmpx + 5)))
851 else if (vc == row.pos()) {
852 c = bidi.vis2log(vc);
853 if (bidi.level(c) % 2 == 1)
856 c = bidi.vis2log(vc - 1);
857 bool const rtl = (bidi.level(c) % 2 == 1);
858 if (left_side == rtl) {
860 boundary = bidi.isBoundary(buffer, par, c);
864 // I believe this code is not needed anymore (Jug 20050717)
866 // The following code is necessary because the cursor position past
867 // the last char in a row is logically equivalent to that before
868 // the first char in the next row. That's why insets causing row
869 // divisions -- Newline and display-style insets -- must be treated
870 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
871 // Newline inset, air gap below:
872 if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
873 if (bidi.level(end -1) % 2 == 0)
874 tmpx -= singleWidth(buffer, par, end - 1);
876 tmpx += singleWidth(buffer, par, end - 1);
880 // Air gap above display inset:
881 if (row.pos() < end && c >= end && end < par.size()
882 && par.isInset(end) && par.getInset(end)->display()) {
885 // Air gap below display inset:
886 if (row.pos() < end && c >= end && par.isInset(end - 1)
887 && par.getInset(end - 1)->display()) {
893 pos_type const col = c - row.pos();
895 if (!c || end == par.size())
898 if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
903 return min(col, end - 1 - row.pos());
907 // y is screen coordinate
908 pit_type LyXText::getPitNearY(BufferView const & bv, int y) const
910 BOOST_ASSERT(!paragraphs().empty());
911 BOOST_ASSERT(bv.coordCache().getParPos().find(this) != bv.coordCache().getParPos().end());
912 CoordCache::InnerParPosCache const & cc = bv.coordCache().getParPos().find(this)->second;
914 << BOOST_CURRENT_FUNCTION
915 << ": y: " << y << " cache size: " << cc.size()
918 // look for highest numbered paragraph with y coordinate less than given y
921 CoordCache::InnerParPosCache::const_iterator it = cc.begin();
922 CoordCache::InnerParPosCache::const_iterator et = cc.end();
923 for (; it != et; ++it) {
925 << BOOST_CURRENT_FUNCTION
926 << " examining: pit: " << it->first
927 << " y: " << it->second.y_
930 if (it->first >= pit && int(it->second.y_) - int(pars_[it->first].ascent()) <= y) {
937 << BOOST_CURRENT_FUNCTION
938 << ": found best y: " << yy << " for pit: " << pit
945 Row const & LyXText::getRowNearY(BufferView const & bv, int y, pit_type pit) const
947 Paragraph const & par = pars_[pit];
948 int yy = bv.coordCache().get(this, pit).y_ - par.ascent();
949 BOOST_ASSERT(!par.rows().empty());
950 RowList::const_iterator rit = par.rows().begin();
951 RowList::const_iterator const rlast = boost::prior(par.rows().end());
952 for (; rit != rlast; yy += rit->height(), ++rit)
953 if (yy + rit->height() > y)
959 // x,y are absolute screen coordinates
960 // sets cursor recursively descending into nested editable insets
961 InsetBase * LyXText::editXY(LCursor & cur, int x, int y)
963 if (lyxerr.debugging(Debug::WORKAREA)) {
964 lyxerr << "LyXText::editXY(cur, " << x << ", " << y << ")" << std::endl;
965 cur.bv().coordCache().dump();
967 pit_type pit = getPitNearY(cur.bv(), y);
968 BOOST_ASSERT(pit != -1);
969 Row const & row = getRowNearY(cur.bv(), y, pit);
972 int xx = x; // is modified by getColumnNearX
973 pos_type const pos = row.pos() + getColumnNearX(cur.bv(), pit, row, xx, bound);
979 // try to descend into nested insets
980 InsetBase * inset = checkInsetHit(cur.bv(), x, y);
981 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
983 // Either we deconst editXY or better we move current_font
984 // and real_current_font to LCursor
989 // This should be just before or just behind the
990 // cursor position set above.
991 InsetBase * inset2 = pars_[pit].getInset(pos - 1);
992 InsetBase * inset3 = pars_[pit].getInset(pos);
994 BOOST_ASSERT((pos != 0 && inset == inset2)
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.bv(), 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.bv(), 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.bv(), cur.pit(), row + 1, x));
1168 } else if (cur.pit() + 1 < int(paragraphs().size())) {
1170 updateNeeded |= setCursor(cur, cur.pit(),
1171 x2pos(cur.bv(), 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.isDeleted(old.pos() - 1)) {
1267 oldpar.eraseChar(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(LCursor & cur, pit_type first, pit_type last) const
1334 recordUndo(cur, Undo::ATOMIC, first, last);
1338 void LyXText::recUndo(LCursor & cur, pit_type par) const
1340 recordUndo(cur, Undo::ATOMIC, par, par);
1344 int defaultRowHeight()
1346 return int(theFontMetrics(LyXFont(LyXFont::ALL_SANE)).maxHeight() * 1.2);