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"
29 #include "bufferview_funcs.h"
31 #include "coordcache.h"
33 #include "CutAndPaste.h"
35 #include "dispatchresult.h"
36 #include "errorlist.h"
37 #include "funcrequest.h"
44 #include "paragraph.h"
45 #include "TextMetrics.h"
46 #include "paragraph_funcs.h"
47 #include "ParagraphParameters.h"
48 #include "pariterator.h"
49 #include "lyxserver.h"
50 #include "lyxsocket.h"
54 #include "frontends/FontMetrics.h"
56 #include "insets/insetenv.h"
58 #include "mathed/InsetMathHull.h"
60 #include "support/textutils.h"
62 #include <boost/current_function.hpp>
70 using std::ostringstream;
77 : current_font(LyXFont::ALL_INHERIT),
78 background_color_(LColor::background),
83 bool LyXText::isMainText(Buffer const & buffer) const
85 return &buffer.text() == this;
89 //takes screen x,y coordinates
90 InsetBase * LyXText::checkInsetHit(BufferView & bv, int x, int y)
92 pit_type pit = getPitNearY(bv, y);
93 BOOST_ASSERT(pit != -1);
95 Paragraph const & par = pars_[pit];
98 << BOOST_CURRENT_FUNCTION
103 InsetList::const_iterator iit = par.insetlist.begin();
104 InsetList::const_iterator iend = par.insetlist.end();
105 for (; iit != iend; ++iit) {
106 InsetBase * inset = iit->inset;
109 << BOOST_CURRENT_FUNCTION
110 << ": examining inset " << inset << endl;
112 if (bv.coordCache().getInsets().has(inset))
114 << BOOST_CURRENT_FUNCTION
115 << ": xo: " << inset->xo(bv) << "..."
116 << inset->xo(bv) + inset->width()
117 << " yo: " << inset->yo(bv) - inset->ascent()
119 << inset->yo(bv) + inset->descent()
123 << BOOST_CURRENT_FUNCTION
124 << ": inset has no cached position" << endl;
126 if (inset->covers(bv, x, y)) {
128 << BOOST_CURRENT_FUNCTION
129 << ": Hit inset: " << inset << endl;
134 << BOOST_CURRENT_FUNCTION
135 << ": No inset hit. " << endl;
141 // Gets the fully instantiated font at a given position in a paragraph
142 // Basically the same routine as Paragraph::getFont() in paragraph.C.
143 // The difference is that this one is used for displaying, and thus we
144 // are allowed to make cosmetic improvements. For instance make footnotes
146 LyXFont LyXText::getFont(Buffer const & buffer, Paragraph const & par,
147 pos_type const pos) const
149 BOOST_ASSERT(pos >= 0);
151 LyXLayout_ptr const & layout = par.layout();
155 BufferParams const & params = buffer.params();
156 pos_type const body_pos = par.beginOfBody();
158 // We specialize the 95% common case:
159 if (!par.getDepth()) {
160 LyXFont f = par.getFontSettings(params, pos);
161 if (!isMainText(buffer))
162 applyOuterFont(buffer, f);
165 if (layout->labeltype == LABEL_MANUAL && pos < body_pos) {
166 lf = layout->labelfont;
167 rlf = layout->reslabelfont;
170 rlf = layout->resfont;
172 // In case the default family has been customized
173 if (lf.family() == LyXFont::INHERIT_FAMILY)
174 rlf.setFamily(params.getFont().family());
175 return f.realize(rlf);
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);
188 if (!isMainText(buffer))
189 applyOuterFont(buffer, font);
191 // Find the pit value belonging to paragraph. This will not break
192 // even if pars_ would not be a vector anymore.
193 // Performance appears acceptable.
195 pit_type pit = pars_.size();
196 for (pit_type it = 0; it < pit; ++it)
197 if (&pars_[it] == &par) {
201 // Realize against environment font information
202 // NOTE: the cast to pit_type should be removed when pit_type
203 // changes to a unsigned integer.
204 if (pit < pit_type(pars_.size()))
205 font.realize(outerFont(pit, pars_));
207 // Realize with the fonts of lesser depth.
208 font.realize(params.getFont());
213 // There are currently two font mechanisms in LyX:
214 // 1. The font attributes in a lyxtext, and
215 // 2. The inset-specific font properties, defined in an inset's
216 // metrics() and draw() methods and handed down the inset chain through
217 // the pi/mi parameters, and stored locally in a lyxtext in font_.
218 // This is where the two are integrated in the final fully realized
220 void LyXText::applyOuterFont(Buffer const & buffer, LyXFont & font) const {
222 lf.reduce(buffer.params().getFont());
224 lf.setLanguage(font.language());
229 LyXFont LyXText::getLayoutFont(Buffer const & buffer, pit_type const pit) const
231 LyXLayout_ptr const & layout = pars_[pit].layout();
233 if (!pars_[pit].getDepth()) {
234 LyXFont lf = layout->resfont;
235 // In case the default family has been customized
236 if (layout->font.family() == LyXFont::INHERIT_FAMILY)
237 lf.setFamily(buffer.params().getFont().family());
241 LyXFont font = layout->font;
242 // Realize with the fonts of lesser depth.
243 //font.realize(outerFont(pit, paragraphs()));
244 font.realize(buffer.params().getFont());
250 LyXFont LyXText::getLabelFont(Buffer const & buffer, Paragraph const & par) const
252 LyXLayout_ptr const & layout = par.layout();
254 if (!par.getDepth()) {
255 LyXFont lf = layout->reslabelfont;
256 // In case the default family has been customized
257 if (layout->labelfont.family() == LyXFont::INHERIT_FAMILY)
258 lf.setFamily(buffer.params().getFont().family());
262 LyXFont font = layout->labelfont;
263 // Realize with the fonts of lesser depth.
264 font.realize(buffer.params().getFont());
270 void LyXText::setCharFont(Buffer const & buffer, pit_type pit,
271 pos_type pos, LyXFont const & fnt)
274 LyXLayout_ptr const & layout = pars_[pit].layout();
276 // Get concrete layout font to reduce against
279 if (pos < pars_[pit].beginOfBody())
280 layoutfont = layout->labelfont;
282 layoutfont = layout->font;
284 // Realize against environment font information
285 if (pars_[pit].getDepth()) {
287 while (!layoutfont.resolved() &&
288 tp != pit_type(paragraphs().size()) &&
289 pars_[tp].getDepth()) {
290 tp = outerHook(tp, paragraphs());
291 if (tp != pit_type(paragraphs().size()))
292 layoutfont.realize(pars_[tp].layout()->font);
296 // Inside inset, apply the inset's font attributes if any
298 if (!isMainText(buffer))
299 layoutfont.realize(font_);
301 layoutfont.realize(buffer.params().getFont());
303 // Now, reduce font against full layout font
304 font.reduce(layoutfont);
306 pars_[pit].setFont(pos, font);
310 // return past-the-last paragraph influenced by a layout change on pit
311 pit_type LyXText::undoSpan(pit_type pit)
313 pit_type end = paragraphs().size();
314 pit_type nextpit = pit + 1;
317 //because of parindents
318 if (!pars_[pit].getDepth())
319 return boost::next(nextpit);
320 //because of depth constrains
321 for (; nextpit != end; ++pit, ++nextpit) {
322 if (!pars_[pit].getDepth())
329 void LyXText::setLayout(Buffer const & buffer, pit_type start, pit_type end,
330 string const & layout)
332 BOOST_ASSERT(start != end);
334 BufferParams const & bufparams = buffer.params();
335 LyXLayout_ptr const & lyxlayout = bufparams.getLyXTextClass()[layout];
337 for (pit_type pit = start; pit != end; ++pit) {
338 pars_[pit].applyLayout(lyxlayout);
339 if (lyxlayout->margintype == MARGIN_MANUAL)
340 pars_[pit].setLabelWidthString(buffer.translateLabel(lyxlayout->labelstring()));
345 // set layout over selection and make a total rebreak of those paragraphs
346 void LyXText::setLayout(LCursor & cur, string const & layout)
348 BOOST_ASSERT(this == cur.text());
349 // special handling of new environment insets
350 BufferView & bv = cur.bv();
351 BufferParams const & params = bv.buffer()->params();
352 LyXLayout_ptr const & lyxlayout = params.getLyXTextClass()[layout];
353 if (lyxlayout->is_environment) {
354 // move everything in a new environment inset
355 lyxerr[Debug::DEBUG] << "setting layout " << layout << endl;
356 lyx::dispatch(FuncRequest(LFUN_LINE_BEGIN));
357 lyx::dispatch(FuncRequest(LFUN_LINE_END_SELECT));
358 lyx::dispatch(FuncRequest(LFUN_CUT));
359 InsetBase * inset = new InsetEnvironment(params, layout);
360 insertInset(cur, inset);
361 //inset->edit(cur, true);
362 //lyx::dispatch(FuncRequest(LFUN_PASTE));
366 pit_type start = cur.selBegin().pit();
367 pit_type end = cur.selEnd().pit() + 1;
368 pit_type undopit = undoSpan(end - 1);
369 recUndo(cur, start, undopit - 1);
370 setLayout(cur.buffer(), start, end, layout);
371 updateLabels(cur.buffer());
375 static bool changeDepthAllowed(LyXText::DEPTH_CHANGE type,
376 Paragraph const & par, int max_depth)
378 if (par.layout()->labeltype == LABEL_BIBLIO)
380 int const depth = par.params().depth();
381 if (type == LyXText::INC_DEPTH && depth < max_depth)
383 if (type == LyXText::DEC_DEPTH && depth > 0)
389 bool LyXText::changeDepthAllowed(LCursor & cur, DEPTH_CHANGE type) const
391 BOOST_ASSERT(this == cur.text());
392 // this happens when selecting several cells in tabular (bug 2630)
393 if (cur.selBegin().idx() != cur.selEnd().idx())
396 pit_type const beg = cur.selBegin().pit();
397 pit_type const end = cur.selEnd().pit() + 1;
398 int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
400 for (pit_type pit = beg; pit != end; ++pit) {
401 if (lyx::changeDepthAllowed(type, pars_[pit], max_depth))
403 max_depth = pars_[pit].getMaxDepthAfter();
409 void LyXText::changeDepth(LCursor & cur, DEPTH_CHANGE type)
411 BOOST_ASSERT(this == cur.text());
412 pit_type const beg = cur.selBegin().pit();
413 pit_type const end = cur.selEnd().pit() + 1;
414 recordUndoSelection(cur);
415 int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
417 for (pit_type pit = beg; pit != end; ++pit) {
418 Paragraph & par = pars_[pit];
419 if (lyx::changeDepthAllowed(type, par, max_depth)) {
420 int const depth = par.params().depth();
421 if (type == INC_DEPTH)
422 par.params().depth(depth + 1);
424 par.params().depth(depth - 1);
426 max_depth = par.getMaxDepthAfter();
428 // this handles the counter labels, and also fixes up
429 // depth values for follow-on (child) paragraphs
430 updateLabels(cur.buffer());
434 // set font over selection
435 void LyXText::setFont(LCursor & cur, LyXFont const & font, bool toggleall)
437 BOOST_ASSERT(this == cur.text());
438 // if there is no selection just set the current_font
439 if (!cur.selection()) {
440 // Determine basis font
442 pit_type pit = cur.pit();
443 if (cur.pos() < pars_[pit].beginOfBody())
444 layoutfont = getLabelFont(cur.buffer(), pars_[pit]);
446 layoutfont = getLayoutFont(cur.buffer(), pit);
448 // Update current font
449 real_current_font.update(font,
450 cur.buffer().params().language,
453 // Reduce to implicit settings
454 current_font = real_current_font;
455 current_font.reduce(layoutfont);
456 // And resolve it completely
457 real_current_font.realize(layoutfont);
462 // Ok, we have a selection.
463 recordUndoSelection(cur);
465 DocIterator dit = cur.selectionBegin();
466 DocIterator ditend = cur.selectionEnd();
468 BufferParams const & params = cur.buffer().params();
470 // Don't use forwardChar here as ditend might have
471 // pos() == lastpos() and forwardChar would miss it.
472 // Can't use forwardPos either as this descends into
474 for (; dit != ditend; dit.forwardPosNoDescend()) {
475 if (dit.pos() != dit.lastpos()) {
476 LyXFont f = getFont(cur.buffer(), dit.paragraph(), dit.pos());
477 f.update(font, params.language, toggleall);
478 setCharFont(cur.buffer(), dit.pit(), dit.pos(), f);
484 // the cursor set functions have a special mechanism. When they
485 // realize you left an empty paragraph, they will delete it.
487 bool LyXText::cursorHome(LCursor & cur)
489 BOOST_ASSERT(this == cur.text());
490 ParagraphMetrics const & pm = cur.bv().parMetrics(this, cur.pit());
491 Row const & row = pm.getRow(cur.pos(),cur.boundary());
492 return setCursor(cur, cur.pit(), row.pos());
496 bool LyXText::cursorEnd(LCursor & cur)
498 BOOST_ASSERT(this == cur.text());
499 // if not on the last row of the par, put the cursor before
500 // the final space exept if I have a spanning inset or one string
501 // is so long that we force a break.
502 pos_type end = cur.textRow().endpos();
504 // empty text, end-1 is no valid position
506 bool boundary = false;
507 if (end != cur.lastpos()) {
508 if (!cur.paragraph().isLineSeparator(end-1)
509 && !cur.paragraph().isNewline(end-1))
514 return setCursor(cur, cur.pit(), end, true, boundary);
518 bool LyXText::cursorTop(LCursor & cur)
520 BOOST_ASSERT(this == cur.text());
521 return setCursor(cur, 0, 0);
525 bool LyXText::cursorBottom(LCursor & cur)
527 BOOST_ASSERT(this == cur.text());
528 return setCursor(cur, cur.lastpit(), boost::prior(paragraphs().end())->size());
532 void LyXText::toggleFree(LCursor & cur, LyXFont const & font, bool toggleall)
534 BOOST_ASSERT(this == cur.text());
535 // If the mask is completely neutral, tell user
536 if (font == LyXFont(LyXFont::ALL_IGNORE)) {
537 // Could only happen with user style
538 cur.message(_("No font change defined. "
539 "Use Character under the Layout menu to define font change."));
543 // Try implicit word selection
544 // If there is a change in the language the implicit word selection
546 CursorSlice resetCursor = cur.top();
547 bool implicitSelection =
548 font.language() == ignore_language
549 && font.number() == LyXFont::IGNORE
550 && selectWordWhenUnderCursor(cur, WHOLE_WORD_STRICT);
553 setFont(cur, font, toggleall);
555 // Implicit selections are cleared afterwards
556 // and cursor is set to the original position.
557 if (implicitSelection) {
558 cur.clearSelection();
559 cur.top() = resetCursor;
565 docstring LyXText::getStringToIndex(LCursor const & cur)
567 BOOST_ASSERT(this == cur.text());
571 idxstring = cur.selectionAsString(false);
573 // Try implicit word selection. If there is a change
574 // in the language the implicit word selection is
576 LCursor tmpcur = cur;
577 selectWord(tmpcur, PREVIOUS_WORD);
579 if (!tmpcur.selection())
580 cur.message(_("Nothing to index!"));
581 else if (tmpcur.selBegin().pit() != tmpcur.selEnd().pit())
582 cur.message(_("Cannot index more than one paragraph!"));
584 idxstring = tmpcur.selectionAsString(false);
591 void LyXText::setParagraph(LCursor & cur,
592 Spacing const & spacing, LyXAlignment align,
593 docstring const & labelwidthstring, bool noindent)
595 BOOST_ASSERT(cur.text());
596 // make sure that the depth behind the selection are restored, too
597 pit_type undopit = undoSpan(cur.selEnd().pit());
598 recUndo(cur, cur.selBegin().pit(), undopit - 1);
600 for (pit_type pit = cur.selBegin().pit(), end = cur.selEnd().pit();
602 Paragraph & par = pars_[pit];
603 ParagraphParameters & params = par.params();
604 params.spacing(spacing);
606 // does the layout allow the new alignment?
607 LyXLayout_ptr const & layout = par.layout();
609 if (align == LYX_ALIGN_LAYOUT)
610 align = layout->align;
611 if (align & layout->alignpossible) {
612 if (align == layout->align)
613 params.align(LYX_ALIGN_LAYOUT);
617 par.setLabelWidthString(labelwidthstring);
618 params.noindent(noindent);
623 // this really should just insert the inset and not move the cursor.
624 void LyXText::insertInset(LCursor & cur, InsetBase * inset)
626 BOOST_ASSERT(this == cur.text());
628 cur.paragraph().insertInset(cur.pos(), inset,
629 Change(cur.buffer().params().trackChanges ?
630 Change::INSERTED : Change::UNCHANGED));
634 // needed to insert the selection
635 void LyXText::insertStringAsLines(LCursor & cur, docstring const & str)
637 cur.buffer().insertStringAsLines(pars_, cur.pit(), cur.pos(),
638 current_font, str, autoBreakRows_);
642 // turn double CR to single CR, others are converted into one
643 // blank. Then insertStringAsLines is called
644 void LyXText::insertStringAsParagraphs(LCursor & cur, docstring const & str)
646 docstring linestr = str;
647 bool newline_inserted = false;
649 for (string::size_type i = 0, siz = linestr.size(); i < siz; ++i) {
650 if (linestr[i] == '\n') {
651 if (newline_inserted) {
652 // we know that \r will be ignored by
653 // insertStringAsLines. Of course, it is a dirty
654 // trick, but it works...
655 linestr[i - 1] = '\r';
659 newline_inserted = true;
661 } else if (isPrintable(linestr[i])) {
662 newline_inserted = false;
665 insertStringAsLines(cur, linestr);
669 bool LyXText::setCursor(LCursor & cur, pit_type par, pos_type pos,
670 bool setfont, bool boundary)
673 setCursorIntern(cur, par, pos, setfont, boundary);
674 return cur.bv().checkDepm(cur, old);
678 void LyXText::setCursor(CursorSlice & cur, pit_type par, pos_type pos)
680 BOOST_ASSERT(par != int(paragraphs().size()));
684 // now some strict checking
685 Paragraph & para = getPar(par);
687 // None of these should happen, but we're scaredy-cats
689 lyxerr << "dont like -1" << endl;
693 if (pos > para.size()) {
694 lyxerr << "dont like 1, pos: " << pos
695 << " size: " << para.size()
696 << " par: " << par << endl;
702 void LyXText::setCursorIntern(LCursor & cur,
703 pit_type par, pos_type pos, bool setfont, bool boundary)
705 BOOST_ASSERT(this == cur.text());
706 cur.boundary(boundary);
707 setCursor(cur.top(), par, pos);
713 void LyXText::setCurrentFont(LCursor & cur)
715 BOOST_ASSERT(this == cur.text());
716 pos_type pos = cur.pos();
717 Paragraph & par = cur.paragraph();
719 if (cur.boundary() && pos > 0)
723 if (pos == cur.lastpos())
725 else // potentional bug... BUG (Lgb)
726 if (par.isSeparator(pos)) {
727 if (pos > cur.textRow().pos() &&
728 bidi.level(pos) % 2 ==
729 bidi.level(pos - 1) % 2)
731 else if (pos + 1 < cur.lastpos())
736 BufferParams const & bufparams = cur.buffer().params();
737 current_font = par.getFontSettings(bufparams, pos);
738 real_current_font = getFont(cur.buffer(), par, pos);
740 if (cur.pos() == cur.lastpos()
741 && bidi.isBoundary(cur.buffer(), par, cur.pos())
742 && !cur.boundary()) {
743 Language const * lang = par.getParLanguage(bufparams);
744 current_font.setLanguage(lang);
745 current_font.setNumber(LyXFont::OFF);
746 real_current_font.setLanguage(lang);
747 real_current_font.setNumber(LyXFont::OFF);
751 // y is screen coordinate
752 pit_type LyXText::getPitNearY(BufferView & bv, int y)
754 BOOST_ASSERT(!paragraphs().empty());
755 BOOST_ASSERT(bv.coordCache().getParPos().find(this) != bv.coordCache().getParPos().end());
756 CoordCache::InnerParPosCache const & cc = bv.coordCache().getParPos().find(this)->second;
758 << BOOST_CURRENT_FUNCTION
759 << ": y: " << y << " cache size: " << cc.size()
762 // look for highest numbered paragraph with y coordinate less than given y
765 CoordCache::InnerParPosCache::const_iterator it = cc.begin();
766 CoordCache::InnerParPosCache::const_iterator et = cc.end();
767 CoordCache::InnerParPosCache::const_iterator last = et; last--;
769 TextMetrics & tm = bv.textMetrics(this);
770 ParagraphMetrics const & pm = tm.parMetrics(it->first);
772 // If we are off-screen (before the visible part)
774 // and even before the first paragraph in the cache.
775 && y < it->second.y_ - int(pm.ascent())) {
776 // and we are not at the first paragraph in the inset.
779 // then this is the paragraph we are looking for.
781 // rebreak it and update the CoordCache.
782 tm.redoParagraph(pit);
783 bv.coordCache().parPos()[this][pit] =
784 Point(0, it->second.y_ - pm.descent());
788 ParagraphMetrics const & pm_last = bv.parMetrics(this, last->first);
790 // If we are off-screen (after the visible part)
791 if (y > bv.workHeight()
792 // and even after the first paragraph in the cache.
793 && y >= last->second.y_ + int(pm_last.descent())) {
794 pit = last->first + 1;
795 // and we are not at the last paragraph in the inset.
796 if (pit == int(pars_.size()))
798 // then this is the paragraph we are looking for.
799 // rebreak it and update the CoordCache.
800 tm.redoParagraph(pit);
801 bv.coordCache().parPos()[this][pit] =
802 Point(0, last->second.y_ + pm_last.ascent());
806 for (; it != et; ++it) {
808 << BOOST_CURRENT_FUNCTION
809 << " examining: pit: " << it->first
810 << " y: " << it->second.y_
813 ParagraphMetrics const & pm = bv.parMetrics(this, it->first);
815 if (it->first >= pit && int(it->second.y_) - int(pm.ascent()) <= y) {
822 << BOOST_CURRENT_FUNCTION
823 << ": found best y: " << yy << " for pit: " << pit
830 Row const & LyXText::getRowNearY(BufferView const & bv, int y, pit_type pit) const
832 ParagraphMetrics const & pm = bv.parMetrics(this, pit);
834 int yy = bv.coordCache().get(this, pit).y_ - pm.ascent();
835 BOOST_ASSERT(!pm.rows().empty());
836 RowList::const_iterator rit = pm.rows().begin();
837 RowList::const_iterator const rlast = boost::prior(pm.rows().end());
838 for (; rit != rlast; yy += rit->height(), ++rit)
839 if (yy + rit->height() > y)
845 // x,y are absolute screen coordinates
846 // sets cursor recursively descending into nested editable insets
847 InsetBase * LyXText::editXY(LCursor & cur, int x, int y)
849 if (lyxerr.debugging(Debug::WORKAREA)) {
850 lyxerr << "LyXText::editXY(cur, " << x << ", " << y << ")" << std::endl;
851 cur.bv().coordCache().dump();
853 pit_type pit = getPitNearY(cur.bv(), y);
854 BOOST_ASSERT(pit != -1);
856 Row const & row = getRowNearY(cur.bv(), y, pit);
859 TextMetrics const & tm = cur.bv().textMetrics(this);
860 int xx = x; // is modified by getColumnNearX
861 pos_type const pos = row.pos()
862 + tm.getColumnNearX(pit, row, xx, bound);
868 // try to descend into nested insets
869 InsetBase * inset = checkInsetHit(cur.bv(), x, y);
870 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
872 // Either we deconst editXY or better we move current_font
873 // and real_current_font to LCursor
878 InsetBase * insetBefore = pos? pars_[pit].getInset(pos - 1): 0;
879 //InsetBase * insetBehind = pars_[pit].getInset(pos);
881 // This should be just before or just behind the
882 // cursor position set above.
883 BOOST_ASSERT((pos != 0 && inset == insetBefore)
884 || inset == pars_[pit].getInset(pos));
886 // Make sure the cursor points to the position before
888 if (inset == insetBefore)
891 // Try to descend recursively inside the inset.
892 inset = inset->editXY(cur, x, y);
894 if (cur.top().text() == this)
900 bool LyXText::checkAndActivateInset(LCursor & cur, bool front)
904 if (cur.pos() == cur.lastpos())
906 InsetBase * inset = cur.nextInset();
907 if (!isHighlyEditableInset(inset))
909 inset->edit(cur, front);
914 bool LyXText::cursorLeft(LCursor & cur)
916 // Tell BufferView to test for FitCursor in any case!
917 cur.updateFlags(Update::FitCursor);
919 if (!cur.boundary() && cur.pos() > 0 &&
920 cur.textRow().pos() == cur.pos() &&
921 !cur.paragraph().isLineSeparator(cur.pos()-1) &&
922 !cur.paragraph().isNewline(cur.pos()-1)) {
923 return setCursor(cur, cur.pit(), cur.pos(), true, true);
925 if (cur.pos() != 0) {
926 bool updateNeeded = setCursor(cur, cur.pit(), cur.pos() - 1, true, false);
927 if (!checkAndActivateInset(cur, false)) {
928 /** FIXME: What's this cause purpose???
929 bool boundary = cur.boundary();
930 if (false && !boundary &&
931 bidi.isBoundary(cur.buffer(), cur.paragraph(), cur.pos() + 1))
933 setCursor(cur, cur.pit(), cur.pos() + 1, true, true);
939 if (cur.pit() != 0) {
940 // Steps into the paragraph above
941 return setCursor(cur, cur.pit() - 1, getPar(cur.pit() - 1).size());
947 bool LyXText::cursorRight(LCursor & cur)
949 // Tell BufferView to test for FitCursor in any case!
950 cur.updateFlags(Update::FitCursor);
952 if (cur.pos() != cur.lastpos()) {
954 return setCursor(cur, cur.pit(), cur.pos(),
957 bool updateNeeded = false;
958 if (!checkAndActivateInset(cur, true)) {
959 if (cur.textRow().endpos() == cur.pos() + 1 &&
960 cur.textRow().endpos() != cur.lastpos() &&
961 !cur.paragraph().isLineSeparator(cur.pos()) &&
962 !cur.paragraph().isNewline(cur.pos())) {
965 updateNeeded |= setCursor(cur, cur.pit(), cur.pos() + 1, true, cur.boundary());
966 if (false && bidi.isBoundary(cur.buffer(), cur.paragraph(),
968 updateNeeded |= setCursor(cur, cur.pit(), cur.pos(), true, true);
973 if (cur.pit() != cur.lastpit())
974 return setCursor(cur, cur.pit() + 1, 0);
979 bool LyXText::cursorUp(LCursor & cur)
981 // Tell BufferView to test for FitCursor in any case!
982 cur.updateFlags(Update::FitCursor);
984 TextMetrics const & tm = cur.bv().textMetrics(this);
985 ParagraphMetrics const & pm = tm.parMetrics(cur.pit());
988 int const x = cur.targetX();
990 if (cur.pos() && cur.boundary())
991 row = pm.pos2row(cur.pos()-1);
993 row = pm.pos2row(cur.pos());
995 if (!cur.selection()) {
996 int const y = bv_funcs::getPos(cur.bv(), cur, cur.boundary()).y_;
998 // Go to middle of previous row. 16 found to work OK;
999 // 12 = top/bottom margin of display math
1000 int const margin = 3 * InsetMathHull::displayMargin() / 2;
1001 editXY(cur, x, y - pm.rows()[row].ascent() - margin);
1002 cur.clearSelection();
1004 // This happens when you move out of an inset.
1005 // And to give the DEPM the possibility of doing
1006 // something we must provide it with two different
1008 LCursor dummy = cur;
1012 cur.bv().checkDepm(dummy, old);
1016 bool updateNeeded = false;
1019 updateNeeded |= setCursor(cur, cur.pit(),
1020 tm.x2pos(cur.pit(), row - 1, x));
1021 } else if (cur.pit() > 0) {
1023 //cannot use 'par' now
1024 ParagraphMetrics const & pmcur = cur.bv().parMetrics(this, cur.pit());
1025 updateNeeded |= setCursor(cur, cur.pit(),
1026 tm.x2pos(cur.pit(), pmcur.rows().size() - 1, x));
1031 return updateNeeded;
1035 bool LyXText::cursorDown(LCursor & cur)
1037 // Tell BufferView to test for FitCursor in any case!
1038 cur.updateFlags(Update::FitCursor);
1040 TextMetrics const & tm = cur.bv().textMetrics(this);
1041 ParagraphMetrics const & pm = tm.parMetrics(cur.pit());
1044 int const x = cur.targetX();
1046 if (cur.pos() && cur.boundary())
1047 row = pm.pos2row(cur.pos()-1);
1049 row = pm.pos2row(cur.pos());
1051 if (!cur.selection()) {
1052 int const y = bv_funcs::getPos(cur.bv(), cur, cur.boundary()).y_;
1054 // To middle of next row
1055 int const margin = 3 * InsetMathHull::displayMargin() / 2;
1056 editXY(cur, x, y + pm.rows()[row].descent() + margin);
1057 cur.clearSelection();
1059 // This happens when you move out of an inset.
1060 // And to give the DEPM the possibility of doing
1061 // something we must provide it with two different
1063 LCursor dummy = cur;
1067 bool const changed = cur.bv().checkDepm(dummy, old);
1069 // Make sure that cur gets back whatever happened to dummy(Lgb)
1076 bool updateNeeded = false;
1078 if (row + 1 < int(pm.rows().size())) {
1079 updateNeeded |= setCursor(cur, cur.pit(),
1080 tm.x2pos(cur.pit(), row + 1, x));
1081 } else if (cur.pit() + 1 < int(paragraphs().size())) {
1083 updateNeeded |= setCursor(cur, cur.pit(),
1084 tm.x2pos(cur.pit(), 0, x));
1089 return updateNeeded;
1093 bool LyXText::cursorUpParagraph(LCursor & cur)
1095 bool updated = false;
1097 updated = setCursor(cur, cur.pit(), 0);
1098 else if (cur.pit() != 0)
1099 updated = setCursor(cur, cur.pit() - 1, 0);
1104 bool LyXText::cursorDownParagraph(LCursor & cur)
1106 bool updated = false;
1107 if (cur.pit() != cur.lastpit())
1108 updated = setCursor(cur, cur.pit() + 1, 0);
1110 updated = setCursor(cur, cur.pit(), cur.lastpos());
1115 // fix the cursor `cur' after a characters has been deleted at `where'
1116 // position. Called by deleteEmptyParagraphMechanism
1117 void LyXText::fixCursorAfterDelete(CursorSlice & cur, CursorSlice const & where)
1119 // Do nothing if cursor is not in the paragraph where the
1120 // deletion occured,
1121 if (cur.pit() != where.pit())
1124 // If cursor position is after the deletion place update it
1125 if (cur.pos() > where.pos())
1128 // Check also if we don't want to set the cursor on a spot behind the
1129 // pagragraph because we erased the last character.
1130 if (cur.pos() > cur.lastpos())
1131 cur.pos() = cur.lastpos();
1135 bool LyXText::deleteEmptyParagraphMechanism(LCursor & cur,
1136 LCursor & old, bool & need_anchor_change)
1138 //lyxerr[Debug::DEBUG] << "DEPM: cur:\n" << cur << "old:\n" << old << endl;
1140 Paragraph & oldpar = old.paragraph();
1142 // We allow all kinds of "mumbo-jumbo" when freespacing.
1143 if (oldpar.isFreeSpacing())
1146 /* Ok I'll put some comments here about what is missing.
1147 There are still some small problems that can lead to
1148 double spaces stored in the document file or space at
1149 the beginning of paragraphs(). This happens if you have
1150 the cursor between to spaces and then save. Or if you
1151 cut and paste and the selection have a space at the
1152 beginning and then save right after the paste. (Lgb)
1155 // If old.pos() == 0 and old.pos()(1) == LineSeparator
1156 // delete the LineSeparator.
1159 // If old.pos() == 1 and old.pos()(0) == LineSeparator
1160 // delete the LineSeparator.
1163 bool const same_inset = &old.inset() == &cur.inset();
1164 bool const same_par = same_inset && old.pit() == cur.pit();
1165 bool const same_par_pos = same_par && old.pos() == cur.pos();
1167 // If the chars around the old cursor were spaces, delete one of them.
1168 if (!same_par_pos) {
1169 // Only if the cursor has really moved.
1171 && old.pos() < oldpar.size()
1172 && oldpar.isLineSeparator(old.pos())
1173 && oldpar.isLineSeparator(old.pos() - 1)
1174 && !oldpar.isDeleted(old.pos() - 1)) {
1175 oldpar.eraseChar(old.pos() - 1, false); // do not track changes in DEPM
1176 #ifdef WITH_WARNINGS
1177 #warning This will not work anymore when we have multiple views of the same buffer
1178 // In this case, we will have to correct also the cursors held by
1179 // other bufferviews. It will probably be easier to do that in a more
1180 // automated way in CursorSlice code. (JMarc 26/09/2001)
1182 // correct all cursor parts
1184 fixCursorAfterDelete(cur.top(), old.top());
1185 need_anchor_change = true;
1191 // only do our magic if we changed paragraph
1195 // don't delete anything if this is the ONLY paragraph!
1196 if (old.lastpit() == 0)
1199 // Do not delete empty paragraphs with keepempty set.
1200 if (oldpar.allowEmpty())
1203 if (oldpar.empty() || (oldpar.size() == 1 && oldpar.isLineSeparator(0))) {
1205 recordUndo(old, Undo::ATOMIC,
1206 max(old.pit() - 1, pit_type(0)),
1207 min(old.pit() + 1, old.lastpit()));
1208 ParagraphList & plist = old.text()->paragraphs();
1209 plist.erase(boost::next(plist.begin(), old.pit()));
1211 // see #warning above
1212 if (cur.depth() >= old.depth()) {
1213 CursorSlice & curslice = cur[old.depth() - 1];
1214 if (&curslice.inset() == &old.inset()
1215 && curslice.pit() > old.pit()) {
1217 // since a paragraph has been deleted, all the
1218 // insets after `old' have been copied and
1219 // their address has changed. Therefore we
1220 // need to `regenerate' cur. (JMarc)
1221 cur.updateInsets(&(cur.bottom().inset()));
1222 need_anchor_change = true;
1228 if (oldpar.stripLeadingSpaces())
1229 need_anchor_change = true;
1235 void LyXText::recUndo(LCursor & cur, pit_type first, pit_type last) const
1237 recordUndo(cur, Undo::ATOMIC, first, last);
1241 void LyXText::recUndo(LCursor & cur, pit_type par) const
1243 recordUndo(cur, Undo::ATOMIC, par, par);