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 "bufferparams.h"
27 #include "BufferView.h"
29 #include "coordcache.h"
31 #include "CutAndPaste.h"
33 #include "dispatchresult.h"
34 #include "errorlist.h"
35 #include "funcrequest.h"
41 #include "lyxrow_funcs.h"
42 #include "paragraph.h"
43 #include "paragraph_funcs.h"
44 #include "ParagraphParameters.h"
45 #include "pariterator.h"
49 #include "frontends/font_metrics.h"
50 #include "frontends/LyXView.h"
52 #include "insets/insetenv.h"
54 #include "support/textutils.h"
62 using std::ostringstream;
67 LyXText::LyXText(BufferView * bv)
68 : maxwidth_(bv ? bv->workWidth() : 100),
69 background_color_(LColor::background),
75 void LyXText::init(BufferView * bv)
79 maxwidth_ = bv->workWidth();
84 pit_type const end = paragraphs().size();
85 for (pit_type pit = 0; pit != end; ++pit)
86 pars_[pit].rows().clear();
88 current_font = getFont(pars_[0], 0);
89 updateCounters(*bv->buffer());
93 bool LyXText::isMainText() const
95 return &bv()->buffer()->text() == this;
99 //takes screen x,y coordinates
100 InsetBase * LyXText::checkInsetHit(int x, int y) const
102 pit_type pit = getPitNearY(y);
103 BOOST_ASSERT(pit != -1);
105 Paragraph const & par = pars_[pit];
108 << BOOST_CURRENT_FUNCTION
113 InsetList::const_iterator iit = par.insetlist.begin();
114 InsetList::const_iterator iend = par.insetlist.end();
115 for (; iit != iend; ++iit) {
116 InsetBase * inset = iit->inset;
119 << BOOST_CURRENT_FUNCTION
120 << ": examining inset " << inset << endl;
122 if (theCoords.getInsets().has(inset))
124 << BOOST_CURRENT_FUNCTION
125 << ": xo: " << inset->xo() << "..."
126 << inset->xo() + inset->width()
127 << " yo: " << inset->yo() - inset->ascent()
129 << inset->yo() + inset->descent()
133 << BOOST_CURRENT_FUNCTION
134 << ": inset has no cached position" << endl;
136 if (inset->covers(x, y)) {
138 << BOOST_CURRENT_FUNCTION
139 << ": Hit inset: " << inset << endl;
144 << BOOST_CURRENT_FUNCTION
145 << ": No inset hit. " << endl;
151 // Gets the fully instantiated font at a given position in a paragraph
152 // Basically the same routine as Paragraph::getFont() in paragraph.C.
153 // The difference is that this one is used for displaying, and thus we
154 // are allowed to make cosmetic improvements. For instance make footnotes
156 LyXFont LyXText::getFont(Paragraph const & par, pos_type const pos) const
158 BOOST_ASSERT(pos >= 0);
160 LyXLayout_ptr const & layout = par.layout();
164 BufferParams const & params = bv()->buffer()->params();
165 pos_type const body_pos = par.beginOfBody();
167 // We specialize the 95% common case:
168 if (!par.getDepth()) {
169 LyXFont f = par.getFontSettings(params, pos);
172 if (layout->labeltype == LABEL_MANUAL && pos < body_pos)
173 return f.realize(layout->reslabelfont);
175 return f.realize(layout->resfont);
178 // The uncommon case need not be optimized as much
181 layoutfont = layout->labelfont;
183 layoutfont = layout->font;
185 LyXFont font = par.getFontSettings(params, pos);
186 font.realize(layoutfont);
189 applyOuterFont(font);
191 // Realize with the fonts of lesser depth.
192 font.realize(defaultfont_);
197 // There are currently two font mechanisms in LyX:
198 // 1. The font attributes in a lyxtext, and
199 // 2. The inset-specific font properties, defined in an inset's
200 // metrics() and draw() methods and handed down the inset chain through
201 // the pi/mi parameters, and stored locally in a lyxtext in font_.
202 // This is where the two are integrated in the final fully realized
204 void LyXText::applyOuterFont(LyXFont & font) const {
206 lf.reduce(defaultfont_);
208 lf.setLanguage(font.language());
213 LyXFont LyXText::getLayoutFont(pit_type const pit) const
215 LyXLayout_ptr const & layout = pars_[pit].layout();
217 if (!pars_[pit].getDepth())
218 return layout->resfont;
220 LyXFont font = layout->font;
221 // Realize with the fonts of lesser depth.
222 //font.realize(outerFont(pit, paragraphs()));
223 font.realize(defaultfont_);
229 LyXFont LyXText::getLabelFont(Paragraph const & par) const
231 LyXLayout_ptr const & layout = par.layout();
234 return layout->reslabelfont;
236 LyXFont font = layout->labelfont;
237 // Realize with the fonts of lesser depth.
238 font.realize(defaultfont_);
244 void LyXText::setCharFont(pit_type pit, pos_type pos, LyXFont const & fnt)
247 LyXLayout_ptr const & layout = pars_[pit].layout();
249 // Get concrete layout font to reduce against
252 if (pos < pars_[pit].beginOfBody())
253 layoutfont = layout->labelfont;
255 layoutfont = layout->font;
257 // Realize against environment font information
258 if (pars_[pit].getDepth()) {
260 while (!layoutfont.resolved() &&
261 tp != pit_type(paragraphs().size()) &&
262 pars_[tp].getDepth()) {
263 tp = outerHook(tp, paragraphs());
264 if (tp != pit_type(paragraphs().size()))
265 layoutfont.realize(pars_[tp].layout()->font);
269 layoutfont.realize(defaultfont_);
271 // Now, reduce font against full layout font
272 font.reduce(layoutfont);
274 pars_[pit].setFont(pos, font);
279 // Asger is not sure we want to do this...
280 void LyXText::makeFontEntriesLayoutSpecific(BufferParams const & params,
283 LyXLayout_ptr const & layout = par.layout();
284 pos_type const psize = par.size();
287 for (pos_type pos = 0; pos < psize; ++pos) {
288 if (pos < par.beginOfBody())
289 layoutfont = layout->labelfont;
291 layoutfont = layout->font;
293 LyXFont tmpfont = par.getFontSettings(params, pos);
294 tmpfont.reduce(layoutfont);
295 par.setFont(pos, tmpfont);
300 // return past-the-last paragraph influenced by a layout change on pit
301 pit_type LyXText::undoSpan(pit_type pit)
303 pit_type end = paragraphs().size();
304 pit_type nextpit = pit + 1;
307 //because of parindents
308 if (!pars_[pit].getDepth())
309 return boost::next(nextpit);
310 //because of depth constrains
311 for (; nextpit != end; ++pit, ++nextpit) {
312 if (!pars_[pit].getDepth())
319 pit_type LyXText::setLayout(pit_type start, pit_type end, string const & layout)
321 BOOST_ASSERT(start != end);
322 pit_type undopit = undoSpan(end - 1);
323 recUndo(start, undopit - 1);
325 BufferParams const & bufparams = bv()->buffer()->params();
326 LyXLayout_ptr const & lyxlayout = bufparams.getLyXTextClass()[layout];
328 for (pit_type pit = start; pit != end; ++pit) {
329 pars_[pit].applyLayout(lyxlayout);
330 makeFontEntriesLayoutSpecific(bufparams, pars_[pit]);
331 if (lyxlayout->margintype == MARGIN_MANUAL)
332 pars_[pit].setLabelWidthString(lyxlayout->labelstring());
339 // set layout over selection and make a total rebreak of those paragraphs
340 void LyXText::setLayout(LCursor & cur, string const & layout)
342 BOOST_ASSERT(this == cur.text());
343 // special handling of new environment insets
344 BufferView & bv = cur.bv();
345 BufferParams const & params = bv.buffer()->params();
346 LyXLayout_ptr const & lyxlayout = params.getLyXTextClass()[layout];
347 if (lyxlayout->is_environment) {
348 // move everything in a new environment inset
349 lyxerr[Debug::DEBUG] << "setting layout " << layout << endl;
350 bv.owner()->dispatch(FuncRequest(LFUN_HOME));
351 bv.owner()->dispatch(FuncRequest(LFUN_ENDSEL));
352 bv.owner()->dispatch(FuncRequest(LFUN_CUT));
353 InsetBase * inset = new InsetEnvironment(params, layout);
354 insertInset(cur, inset);
355 //inset->edit(cur, true);
356 //bv.owner()->dispatch(FuncRequest(LFUN_PASTE));
360 pit_type start = cur.selBegin().pit();
361 pit_type end = cur.selEnd().pit() + 1;
362 setLayout(start, end, layout);
363 updateCounters(cur.buffer());
370 bool changeDepthAllowed(LyXText::DEPTH_CHANGE type,
371 Paragraph const & par, int max_depth)
373 if (par.layout()->labeltype == LABEL_BIBLIO)
375 int const depth = par.params().depth();
376 if (type == LyXText::INC_DEPTH && depth < max_depth)
378 if (type == LyXText::DEC_DEPTH && depth > 0)
387 bool LyXText::changeDepthAllowed(LCursor & cur, DEPTH_CHANGE type) const
389 BOOST_ASSERT(this == cur.text());
390 pit_type const beg = cur.selBegin().pit();
391 pit_type const end = cur.selEnd().pit() + 1;
392 int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
394 for (pit_type pit = beg; pit != end; ++pit) {
395 if (::changeDepthAllowed(type, pars_[pit], max_depth))
397 max_depth = pars_[pit].getMaxDepthAfter();
403 void LyXText::changeDepth(LCursor & cur, DEPTH_CHANGE type)
405 BOOST_ASSERT(this == cur.text());
406 pit_type const beg = cur.selBegin().pit();
407 pit_type const end = cur.selEnd().pit() + 1;
408 recordUndoSelection(cur);
409 int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
411 for (pit_type pit = beg; pit != end; ++pit) {
412 Paragraph & par = pars_[pit];
413 if (::changeDepthAllowed(type, par, max_depth)) {
414 int const depth = par.params().depth();
415 if (type == INC_DEPTH)
416 par.params().depth(depth + 1);
418 par.params().depth(depth - 1);
420 max_depth = par.getMaxDepthAfter();
422 // this handles the counter labels, and also fixes up
423 // depth values for follow-on (child) paragraphs
424 updateCounters(cur.buffer());
428 // set font over selection
429 void LyXText::setFont(LCursor & cur, LyXFont const & font, bool toggleall)
431 BOOST_ASSERT(this == cur.text());
432 // if there is no selection just set the current_font
433 if (!cur.selection()) {
434 // Determine basis font
436 pit_type pit = cur.pit();
437 if (cur.pos() < pars_[pit].beginOfBody())
438 layoutfont = getLabelFont(pars_[pit]);
440 layoutfont = getLayoutFont(pit);
442 // Update current font
443 real_current_font.update(font,
444 cur.buffer().params().language,
447 // Reduce to implicit settings
448 current_font = real_current_font;
449 current_font.reduce(layoutfont);
450 // And resolve it completely
451 real_current_font.realize(layoutfont);
456 // Ok, we have a selection.
457 recordUndoSelection(cur);
459 DocIterator dit = cur.selectionBegin();
460 DocIterator ditend = cur.selectionEnd();
462 BufferParams const & params = cur.buffer().params();
464 // Don't use forwardChar here as ditend might have
465 // pos() == lastpos() and forwardChar would miss it.
466 // Can't use forwardPos either as this descends into
468 for (; dit != ditend; dit.forwardPosNoDescend()) {
469 if (dit.pos() != dit.lastpos()) {
470 LyXFont f = getFont(dit.paragraph(), dit.pos());
471 f.update(font, params.language, toggleall);
472 setCharFont(dit.pit(), dit.pos(), f);
478 // the cursor set functions have a special mechanism. When they
479 // realize you left an empty paragraph, they will delete it.
481 void LyXText::cursorHome(LCursor & cur)
483 BOOST_ASSERT(this == cur.text());
484 Row const & row = cur.paragraph().getRow(cur.pos(),cur.boundary());
486 setCursor(cur, cur.pit(), row.pos());
490 void LyXText::cursorEnd(LCursor & cur)
492 BOOST_ASSERT(this == cur.text());
493 // if not on the last row of the par, put the cursor before
494 // the final space exept if I have a spanning inset or one string
495 // is so long that we force a break.
496 pos_type end = cur.textRow().endpos();
498 // empty text, end-1 is no valid position
500 bool boundary = false;
501 if (end != cur.lastpos()) {
502 if (!cur.paragraph().isLineSeparator(end-1)
503 && !cur.paragraph().isNewline(end-1))
508 setCursor(cur, cur.pit(), end, true, boundary);
512 void LyXText::cursorTop(LCursor & cur)
514 BOOST_ASSERT(this == cur.text());
515 setCursor(cur, 0, 0);
519 void LyXText::cursorBottom(LCursor & cur)
521 BOOST_ASSERT(this == cur.text());
522 setCursor(cur, cur.lastpit(), boost::prior(paragraphs().end())->size());
526 void LyXText::toggleFree(LCursor & cur, LyXFont const & font, bool toggleall)
528 BOOST_ASSERT(this == cur.text());
529 // If the mask is completely neutral, tell user
530 if (font == LyXFont(LyXFont::ALL_IGNORE)) {
531 // Could only happen with user style
532 cur.message(_("No font change defined. "
533 "Use Character under the Layout menu to define font change."));
537 // Try implicit word selection
538 // If there is a change in the language the implicit word selection
540 CursorSlice resetCursor = cur.top();
541 bool implicitSelection =
542 font.language() == ignore_language
543 && font.number() == LyXFont::IGNORE
544 && selectWordWhenUnderCursor(cur, lyx::WHOLE_WORD_STRICT);
547 setFont(cur, font, toggleall);
549 // Implicit selections are cleared afterwards
550 // and cursor is set to the original position.
551 if (implicitSelection) {
552 cur.clearSelection();
553 cur.top() = resetCursor;
559 string LyXText::getStringToIndex(LCursor const & cur)
561 BOOST_ASSERT(this == cur.text());
564 if (cur.selection()) {
565 idxstring = cur.selectionAsString(false);
567 // Try implicit word selection. If there is a change
568 // in the language the implicit word selection is
570 LCursor tmpcur = cur;
571 selectWord(tmpcur, lyx::PREVIOUS_WORD);
573 if (!tmpcur.selection())
574 cur.message(_("Nothing to index!"));
575 else if (tmpcur.selBegin().pit() != tmpcur.selEnd().pit())
576 cur.message(_("Cannot index more than one paragraph!"));
578 idxstring = tmpcur.selectionAsString(false);
585 void LyXText::setParagraph(LCursor & cur,
586 Spacing const & spacing, LyXAlignment align,
587 string const & labelwidthstring, bool noindent)
589 BOOST_ASSERT(cur.text());
590 // make sure that the depth behind the selection are restored, too
591 pit_type undopit = undoSpan(cur.selEnd().pit());
592 recUndo(cur.selBegin().pit(), undopit - 1);
594 for (pit_type pit = cur.selBegin().pit(), end = cur.selEnd().pit();
596 Paragraph & par = pars_[pit];
597 ParagraphParameters & params = par.params();
598 params.spacing(spacing);
600 // does the layout allow the new alignment?
601 LyXLayout_ptr const & layout = par.layout();
603 if (align == LYX_ALIGN_LAYOUT)
604 align = layout->align;
605 if (align & layout->alignpossible) {
606 if (align == layout->align)
607 params.align(LYX_ALIGN_LAYOUT);
611 par.setLabelWidthString(labelwidthstring);
612 params.noindent(noindent);
617 // this really should just insert the inset and not move the cursor.
618 void LyXText::insertInset(LCursor & cur, InsetBase * inset)
620 BOOST_ASSERT(this == cur.text());
622 cur.paragraph().insertInset(cur.pos(), inset);
626 // needed to insert the selection
627 void LyXText::insertStringAsLines(LCursor & cur, string const & str)
629 cur.buffer().insertStringAsLines(pars_, cur.pit(), cur.pos(),
630 current_font, str, autoBreakRows_);
634 // turn double CR to single CR, others are converted into one
635 // blank. Then insertStringAsLines is called
636 void LyXText::insertStringAsParagraphs(LCursor & cur, string const & str)
638 string linestr = str;
639 bool newline_inserted = false;
641 for (string::size_type i = 0, siz = linestr.size(); i < siz; ++i) {
642 if (linestr[i] == '\n') {
643 if (newline_inserted) {
644 // we know that \r will be ignored by
645 // insertStringAsLines. Of course, it is a dirty
646 // trick, but it works...
647 linestr[i - 1] = '\r';
651 newline_inserted = true;
653 } else if (IsPrintable(linestr[i])) {
654 newline_inserted = false;
657 insertStringAsLines(cur, linestr);
661 bool LyXText::setCursor(LCursor & cur, pit_type par, pos_type pos,
662 bool setfont, bool boundary)
665 setCursorIntern(cur, par, pos, setfont, boundary);
666 return deleteEmptyParagraphMechanism(cur, old);
670 void LyXText::setCursor(CursorSlice & cur, pit_type par, pos_type pos)
672 BOOST_ASSERT(par != int(paragraphs().size()));
676 // now some strict checking
677 Paragraph & para = getPar(par);
679 // None of these should happen, but we're scaredy-cats
681 lyxerr << "dont like -1" << endl;
685 if (pos > para.size()) {
686 lyxerr << "dont like 1, pos: " << pos
687 << " size: " << para.size()
688 << " par: " << par << endl;
694 void LyXText::setCursorIntern(LCursor & cur,
695 pit_type par, pos_type pos, bool setfont, bool boundary)
697 cur.boundary(boundary);
698 setCursor(cur.top(), par, pos);
705 void LyXText::setCurrentFont(LCursor & cur)
707 BOOST_ASSERT(this == cur.text());
708 pos_type pos = cur.pos();
709 Paragraph & par = cur.paragraph();
711 if (cur.boundary() && pos > 0)
715 if (pos == cur.lastpos())
717 else // potentional bug... BUG (Lgb)
718 if (par.isSeparator(pos)) {
719 if (pos > cur.textRow().pos() &&
720 bidi.level(pos) % 2 ==
721 bidi.level(pos - 1) % 2)
723 else if (pos + 1 < cur.lastpos())
728 BufferParams const & bufparams = cur.buffer().params();
729 current_font = par.getFontSettings(bufparams, pos);
730 real_current_font = getFont(par, pos);
732 if (cur.pos() == cur.lastpos()
733 && bidi.isBoundary(cur.buffer(), par, cur.pos())
734 && !cur.boundary()) {
735 Language const * lang = par.getParLanguage(bufparams);
736 current_font.setLanguage(lang);
737 current_font.setNumber(LyXFont::OFF);
738 real_current_font.setLanguage(lang);
739 real_current_font.setNumber(LyXFont::OFF);
744 // x is an absolute screen coord
745 // returns the column near the specified x-coordinate of the row
746 // x is set to the real beginning of this column
747 pos_type LyXText::getColumnNearX(pit_type const pit,
748 Row const & row, int & x, bool & boundary) const
750 int const xo = theCoords.get(this, pit).x_;
752 RowMetrics const r = computeRowMetrics(pit, row);
753 Paragraph const & par = pars_[pit];
755 pos_type vc = row.pos();
756 pos_type end = row.endpos();
758 LyXLayout_ptr const & layout = par.layout();
760 bool left_side = false;
762 pos_type body_pos = par.beginOfBody();
765 double last_tmpx = tmpx;
768 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
771 // check for empty row
777 while (vc < end && tmpx <= x) {
778 c = bidi.vis2log(vc);
780 if (body_pos > 0 && c == body_pos - 1) {
781 tmpx += r.label_hfill +
782 font_metrics::width(layout->labelsep, getLabelFont(par));
783 if (par.isLineSeparator(body_pos - 1))
784 tmpx -= singleWidth(par, body_pos - 1);
787 if (hfillExpansion(par, row, c)) {
788 tmpx += singleWidth(par, c);
792 tmpx += r.label_hfill;
793 } else if (par.isSeparator(c)) {
794 tmpx += singleWidth(par, c);
798 tmpx += singleWidth(par, c);
803 if ((tmpx + last_tmpx) / 2 > x) {
808 BOOST_ASSERT(vc <= end); // This shouldn't happen.
811 // This (rtl_support test) is not needed, but gives
812 // some speedup if rtl_support == false
813 bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
815 // If lastrow is false, we don't need to compute
817 bool const rtl = lastrow ? isRTL(par) : false;
819 ((rtl && left_side && vc == row.pos() && x < tmpx - 5) ||
820 (!rtl && !left_side && vc == end && x > tmpx + 5)))
822 else if (vc == row.pos()) {
823 c = bidi.vis2log(vc);
824 if (bidi.level(c) % 2 == 1)
827 c = bidi.vis2log(vc - 1);
828 bool const rtl = (bidi.level(c) % 2 == 1);
829 if (left_side == rtl) {
831 boundary = bidi.isBoundary(*bv()->buffer(), par, c);
835 // I believe this code is not needed anymore (Jug 20050717)
837 // The following code is necessary because the cursor position past
838 // the last char in a row is logically equivalent to that before
839 // the first char in the next row. That's why insets causing row
840 // divisions -- Newline and display-style insets -- must be treated
841 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
842 // Newline inset, air gap below:
843 if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
844 if (bidi.level(end -1) % 2 == 0)
845 tmpx -= singleWidth(par, end - 1);
847 tmpx += singleWidth(par, end - 1);
851 // Air gap above display inset:
852 if (row.pos() < end && c >= end && end < par.size()
853 && par.isInset(end) && par.getInset(end)->display()) {
856 // Air gap below display inset:
857 if (row.pos() < end && c >= end && par.isInset(end - 1)
858 && par.getInset(end - 1)->display()) {
864 pos_type const col = c - row.pos();
866 if (!c || end == par.size())
869 if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
874 return min(col, end - 1 - row.pos());
878 // y is screen coordinate
879 pit_type LyXText::getPitNearY(int y) const
881 BOOST_ASSERT(!paragraphs().empty());
882 BOOST_ASSERT(theCoords.getParPos().find(this) != theCoords.getParPos().end());
883 CoordCache::InnerParPosCache const & cc = theCoords.getParPos().find(this)->second;
885 << BOOST_CURRENT_FUNCTION
886 << ": y: " << y << " cache size: " << cc.size()
889 // look for highest numbered paragraph with y coordinate less than given y
892 CoordCache::InnerParPosCache::const_iterator it = cc.begin();
893 CoordCache::InnerParPosCache::const_iterator et = cc.end();
894 for (; it != et; ++it) {
896 << BOOST_CURRENT_FUNCTION
897 << " examining: pit: " << it->first
898 << " y: " << it->second.y_
901 if (it->first >= pit && int(it->second.y_) - int(pars_[it->first].ascent()) <= y) {
908 << BOOST_CURRENT_FUNCTION
909 << ": found best y: " << yy << " for pit: " << pit
916 Row const & LyXText::getRowNearY(int y, pit_type pit) const
918 Paragraph const & par = pars_[pit];
919 int yy = theCoords.get(this, pit).y_ - par.ascent();
920 BOOST_ASSERT(!par.rows().empty());
921 RowList::const_iterator rit = par.rows().begin();
922 RowList::const_iterator const rlast = boost::prior(par.rows().end());
923 for (; rit != rlast; yy += rit->height(), ++rit)
924 if (yy + rit->height() > y)
930 // x,y are absolute screen coordinates
931 // sets cursor recursively descending into nested editable insets
932 InsetBase * LyXText::editXY(LCursor & cur, int x, int y)
934 pit_type pit = getPitNearY(y);
935 BOOST_ASSERT(pit != -1);
936 Row const & row = getRowNearY(y, pit);
939 int xx = x; // is modified by getColumnNearX
940 pos_type const pos = row.pos() + getColumnNearX(pit, row, xx, bound);
946 // try to descend into nested insets
947 InsetBase * inset = checkInsetHit(x, y);
948 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
950 // Either we deconst editXY or better we move current_font
951 // and real_current_font to LCursor
956 // This should be just before or just behind the
957 // cursor position set above.
958 BOOST_ASSERT((pos != 0 && inset == pars_[pit].getInset(pos - 1))
959 || inset == pars_[pit].getInset(pos));
960 // Make sure the cursor points to the position before
962 if (inset == pars_[pit].getInset(pos - 1))
964 inset = inset->editXY(cur, x, y);
965 if (cur.top().text() == this)
971 bool LyXText::checkAndActivateInset(LCursor & cur, bool front)
975 if (cur.pos() == cur.lastpos())
977 InsetBase * inset = cur.nextInset();
978 if (!isHighlyEditableInset(inset))
980 inset->edit(cur, front);
985 bool LyXText::cursorLeft(LCursor & cur)
987 if (!cur.boundary() && cur.pos() > 0 &&
988 cur.textRow().pos() == cur.pos() &&
989 !cur.paragraph().isLineSeparator(cur.pos()-1) &&
990 !cur.paragraph().isNewline(cur.pos()-1))
992 return setCursor(cur, cur.pit(), cur.pos(), true, true);
994 if (cur.pos() != 0) {
995 bool boundary = cur.boundary();
996 bool updateNeeded = setCursor(cur, cur.pit(), cur.pos() - 1, true, false);
997 if (!checkAndActivateInset(cur, false)) {
998 if (false && !boundary &&
999 bidi.isBoundary(cur.buffer(), cur.paragraph(), cur.pos() + 1))
1001 setCursor(cur, cur.pit(), cur.pos() + 1, true, true);
1003 return updateNeeded;
1006 if (cur.pit() != 0) {
1007 // Steps into the paragraph above
1008 return setCursor(cur, cur.pit() - 1, getPar(cur.pit() - 1).size());
1014 bool LyXText::cursorRight(LCursor & cur)
1016 if (cur.pos() != cur.lastpos()) {
1018 return setCursor(cur, cur.pit(), cur.pos(),
1021 bool updateNeeded = false;
1022 if (!checkAndActivateInset(cur, true)) {
1023 if (cur.textRow().endpos() == cur.pos() + 1 &&
1024 cur.textRow().endpos() != cur.lastpos() &&
1025 !cur.paragraph().isLineSeparator(cur.pos()) &&
1026 !cur.paragraph().isNewline(cur.pos()))
1030 updateNeeded |= setCursor(cur, cur.pit(), cur.pos() + 1, true, cur.boundary());
1031 if (false && bidi.isBoundary(cur.buffer(), cur.paragraph(),
1033 updateNeeded |= setCursor(cur, cur.pit(), cur.pos(), true, true);
1035 return updateNeeded;
1038 if (cur.pit() != cur.lastpit())
1039 return setCursor(cur, cur.pit() + 1, 0);
1044 bool LyXText::cursorUp(LCursor & cur)
1046 Paragraph const & par = cur.paragraph();
1048 int const x = cur.targetX();
1050 if (cur.pos() && cur.boundary())
1051 row = par.pos2row(cur.pos()-1);
1053 row = par.pos2row(cur.pos());
1055 if (!cur.selection()) {
1056 int const y = bv_funcs::getPos(cur, cur.boundary()).y_;
1058 editXY(cur, x, y - par.rows()[row].ascent() - 1);
1060 // This happens when you move out of an inset.
1061 // And to give the DEPM the possibility of doing
1062 // something we must provide it with two different
1064 LCursor dummy = cur;
1068 return deleteEmptyParagraphMechanism(dummy, old);
1071 bool updateNeeded = false;
1074 updateNeeded |= setCursor(cur, cur.pit(),
1075 x2pos(cur.pit(), row - 1, x));
1076 } else if (cur.pit() > 0) {
1078 //cannot use 'par' now
1079 updateNeeded |= setCursor(cur, cur.pit(),
1080 x2pos(cur.pit(), cur.paragraph().rows().size() - 1, x));
1085 return updateNeeded;
1089 bool LyXText::cursorDown(LCursor & cur)
1091 Paragraph const & par = cur.paragraph();
1093 int const x = cur.targetX();
1095 if (cur.pos() && cur.boundary())
1096 row = par.pos2row(cur.pos()-1);
1098 row = par.pos2row(cur.pos());
1100 if (!cur.selection()) {
1101 int const y = bv_funcs::getPos(cur, cur.boundary()).y_;
1103 editXY(cur, x, y + par.rows()[row].descent() + 1);
1105 // This happens when you move out of an inset.
1106 // And to give the DEPM the possibility of doing
1107 // something we must provide it with two different
1109 LCursor dummy = cur;
1113 bool const changed = deleteEmptyParagraphMechanism(dummy, old);
1115 // Make sure that cur gets back whatever happened to dummy(Lgb)
1123 bool updateNeeded = false;
1125 if (row + 1 < int(par.rows().size())) {
1126 updateNeeded |= setCursor(cur, cur.pit(),
1127 x2pos(cur.pit(), row + 1, x));
1128 } else if (cur.pit() + 1 < int(paragraphs().size())) {
1130 updateNeeded |= setCursor(cur, cur.pit(),
1131 x2pos(cur.pit(), 0, x));
1136 return updateNeeded;
1140 bool LyXText::cursorUpParagraph(LCursor & cur)
1142 bool updated = false;
1144 updated = setCursor(cur, cur.pit(), 0);
1145 else if (cur.pit() != 0)
1146 updated = setCursor(cur, cur.pit() - 1, 0);
1151 bool LyXText::cursorDownParagraph(LCursor & cur)
1153 bool updated = false;
1154 if (cur.pit() != cur.lastpit())
1155 updated = setCursor(cur, cur.pit() + 1, 0);
1157 updated = setCursor(cur, cur.pit(), cur.lastpos());
1162 // fix the cursor `cur' after a characters has been deleted at `where'
1163 // position. Called by deleteEmptyParagraphMechanism
1164 void LyXText::fixCursorAfterDelete(CursorSlice & cur, CursorSlice const & where)
1166 // Do nothing if cursor is not in the paragraph where the
1167 // deletion occured,
1168 if (cur.pit() != where.pit())
1171 // If cursor position is after the deletion place update it
1172 if (cur.pos() > where.pos())
1175 // Check also if we don't want to set the cursor on a spot behind the
1176 // pagragraph because we erased the last character.
1177 if (cur.pos() > cur.lastpos())
1178 cur.pos() = cur.lastpos();
1182 bool LyXText::deleteEmptyParagraphMechanism(LCursor & cur, LCursor const & old)
1184 // Would be wrong to delete anything if we have a selection.
1185 if (cur.selection())
1188 //lyxerr[Debug::DEBUG] << "DEPM: cur:\n" << cur << "old:\n" << old << endl;
1189 Paragraph const & oldpar = pars_[old.pit()];
1191 // We allow all kinds of "mumbo-jumbo" when freespacing.
1192 if (oldpar.isFreeSpacing())
1195 /* Ok I'll put some comments here about what is missing.
1196 I have fixed BackSpace (and thus Delete) to not delete
1197 double-spaces automagically. I have also changed Cut,
1198 Copy and Paste to hopefully do some sensible things.
1199 There are still some small problems that can lead to
1200 double spaces stored in the document file or space at
1201 the beginning of paragraphs(). This happens if you have
1202 the cursor between to spaces and then save. Or if you
1203 cut and paste and the selection have a space at the
1204 beginning and then save right after the paste. I am
1205 sure none of these are very hard to fix, but I will
1206 put out 1.1.4pre2 with FIX_DOUBLE_SPACE defined so
1207 that I can get some feedback. (Lgb)
1210 // If old.pos() == 0 and old.pos()(1) == LineSeparator
1211 // delete the LineSeparator.
1214 // If old.pos() == 1 and old.pos()(0) == LineSeparator
1215 // delete the LineSeparator.
1218 // If the chars around the old cursor were spaces, delete one of them.
1219 if (old.pit() != cur.pit() || old.pos() != cur.pos()) {
1221 // Only if the cursor has really moved.
1223 && old.pos() < oldpar.size()
1224 && oldpar.isLineSeparator(old.pos())
1225 && oldpar.isLineSeparator(old.pos() - 1)
1226 && oldpar.lookupChange(old.pos() - 1) != Change::DELETED) {
1227 // We need to set the text to Change::INSERTED to
1228 // get it erased properly
1229 pars_[old.pit()].setChange(old.pos() -1,
1231 pars_[old.pit()].erase(old.pos() - 1);
1232 #ifdef WITH_WARNINGS
1233 #warning This will not work anymore when we have multiple views of the same buffer
1234 // In this case, we will have to correct also the cursors held by
1235 // other bufferviews. It will probably be easier to do that in a more
1236 // automated way in CursorSlice code. (JMarc 26/09/2001)
1238 // correct all cursor parts
1239 fixCursorAfterDelete(cur.top(), old.top());
1240 #ifdef WITH_WARNINGS
1241 #warning DEPM, look here
1243 //fixCursorAfterDelete(cur.anchor(), old.top());
1248 // only do our magic if we changed paragraph
1249 if (old.pit() == cur.pit())
1252 // don't delete anything if this is the ONLY paragraph!
1253 if (pars_.size() == 1)
1256 // Do not delete empty paragraphs with keepempty set.
1257 if (oldpar.allowEmpty())
1260 // record if we have deleted a paragraph
1261 // we can't possibly have deleted a paragraph before this point
1262 bool deleted = false;
1264 if (oldpar.empty() || (oldpar.size() == 1 && oldpar.isLineSeparator(0))) {
1265 // ok, we will delete something
1268 bool selection_position_was_oldcursor_position =
1269 cur.anchor().pit() == old.pit() && cur.anchor().pos() == old.pos();
1271 // This is a bit of a overkill. We change the old and the cur par
1272 // at max, certainly not everything in between...
1273 recUndo(old.pit(), cur.pit());
1276 pars_.erase(pars_.begin() + old.pit());
1278 // Update cursor par offset if necessary.
1279 // Some 'iterator registration' would be nice that takes care of
1280 // such events. Maybe even signal/slot?
1281 if (cur.pit() > old.pit())
1283 #ifdef WITH_WARNINGS
1284 #warning DEPM, look here
1286 // if (cur.anchor().pit() > old.pit())
1287 // --cur.anchor().pit();
1289 if (selection_position_was_oldcursor_position) {
1290 // correct selection
1296 updateCounters(cur.buffer());
1300 if (pars_[old.pit()].stripLeadingSpaces())
1307 void LyXText::recUndo(pit_type first, pit_type last) const
1309 recordUndo(bv()->cursor(), Undo::ATOMIC, first, last);
1313 void LyXText::recUndo(pit_type par) const
1315 recordUndo(bv()->cursor(), Undo::ATOMIC, par, par);
1319 int defaultRowHeight()
1321 return int(font_metrics::maxHeight(LyXFont(LyXFont::ALL_SANE)) * 1.2);