3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
7 * \author Stefan Schimanski
9 * Full author contact details are available in file CREDITS.
16 #include "InsetMathBrace.h"
17 #include "InsetMathFont.h"
18 #include "InsetMathScript.h"
19 #include "MacroTable.h"
20 #include "InsetMathMacro.h"
21 #include "MathStream.h"
22 #include "MathSupport.h"
23 #include "MetricsInfo.h"
24 #include "ReplaceData.h"
27 #include "BufferView.h"
28 #include "CoordCache.h"
31 #include "mathed/InsetMathUnknown.h"
33 #include "frontends/FontMetrics.h"
34 #include "frontends/Painter.h"
36 #include "support/debug.h"
37 #include "support/docstream.h"
38 #include "support/gettext.h"
39 #include "support/lassert.h"
40 #include "support/lyxalgo.h"
49 MathData::MathData(Buffer * buf, const_iterator from, const_iterator to)
50 : base_type(from, to), minasc_(0), mindes_(0), slevel_(0),
51 sshift_(0), kerning_(0), buffer_(buf)
55 MathAtom & MathData::operator[](pos_type pos)
57 LBUFERR(pos < size());
58 return base_type::operator[](pos);
62 MathAtom const & MathData::operator[](pos_type pos) const
64 LBUFERR(pos < size());
65 return base_type::operator[](pos);
69 void MathData::insert(size_type pos, MathAtom const & t)
71 LBUFERR(pos <= size());
72 base_type::insert(begin() + pos, t);
76 void MathData::insert(size_type pos, MathData const & ar)
78 LBUFERR(pos <= size());
79 base_type::insert(begin() + pos, ar.begin(), ar.end());
83 void MathData::append(MathData const & ar)
89 void MathData::erase(size_type pos)
96 void MathData::erase(iterator pos1, iterator pos2)
98 base_type::erase(pos1, pos2);
102 void MathData::erase(iterator pos)
104 base_type::erase(pos);
108 void MathData::erase(size_type pos1, size_type pos2)
110 base_type::erase(begin() + pos1, begin() + pos2);
114 void MathData::dump2() const
118 for (const_iterator it = begin(); it != end(); ++it)
120 lyxerr << to_utf8(os.str());
124 void MathData::dump() const
128 for (const_iterator it = begin(); it != end(); ++it)
129 ns << '<' << *it << '>';
130 lyxerr << to_utf8(os.str());
134 void MathData::validate(LaTeXFeatures & features) const
136 for (const_iterator it = begin(); it != end(); ++it)
137 (*it)->validate(features);
141 bool MathData::match(MathData const & ar) const
143 return size() == ar.size() && matchpart(ar, 0);
147 bool MathData::matchpart(MathData const & ar, pos_type pos) const
149 if (size() < ar.size() + pos)
151 const_iterator it = begin() + pos;
152 for (const_iterator jt = ar.begin(); jt != ar.end(); ++jt, ++it)
153 if (asString(*it) != asString(*jt))
159 void MathData::replace(ReplaceData & rep)
161 for (size_type i = 0; i < size(); ++i) {
162 if (find1(rep.from, i)) {
164 lyxerr << "match found!" << endl;
165 erase(i, i + rep.from.size());
170 // FIXME: temporarily disabled
171 // for (const_iterator it = begin(); it != end(); ++it)
172 // it->nucleus()->replace(rep);
176 bool MathData::find1(MathData const & ar, size_type pos) const
178 lyxerr << "finding '" << ar << "' in '" << *this << "'" << endl;
179 for (size_type i = 0, n = ar.size(); i < n; ++i)
180 if (asString(operator[](pos + i)) != asString(ar[i]))
186 MathData::size_type MathData::find(MathData const & ar) const
188 for (int i = 0, last = size() - ar.size(); i < last; ++i)
195 MathData::size_type MathData::find_last(MathData const & ar) const
197 for (int i = size() - ar.size(); i >= 0; --i)
204 bool MathData::contains(MathData const & ar) const
206 if (find(ar) != size())
208 for (const_iterator it = begin(); it != end(); ++it)
209 if ((*it)->contains(ar))
215 bool MathData::addToMathRow(MathRow & mrow, MetricsInfo & mi) const
217 bool has_contents = false;
218 BufferView * bv = mi.base.bv;
219 MathData * ar = const_cast<MathData*>(this);
220 ar->updateMacros(&bv->cursor(), mi.macrocontext,
221 InternalUpdate, mi.base.macro_nesting);
224 // FIXME: for completion, try to insert the relevant data in the
225 // mathrow (like is done for text rows). We could add a pair of
226 // InsetMathColor inset, but these come with extra spacing of
228 DocIterator const & inlineCompletionPos = bv->inlineCompletionPos();
229 bool const has_completion = inlineCompletionPos.inMathed()
230 && &inlineCompletionPos.cell() == this;
231 size_t const compl_pos = has_completion ? inlineCompletionPos.pos() : 0;
233 for (size_t i = 0 ; i < size() ; ++i) {
234 has_contents |= (*this)[i]->addToMathRow(mrow, mi);
235 if (i + 1 == compl_pos) {
236 mrow.back().compl_text = bv->inlineCompletion();
237 mrow.back().compl_unique_to = bv->inlineCompletionUniqueChars();
247 bool isInside(DocIterator const & it, MathData const & ar,
248 pos_type p1, pos_type p2)
250 for (size_t i = 0; i != it.depth(); ++i) {
251 CursorSlice const & sl = it[i];
252 if (sl.inset().inMathed() && &sl.cell() == &ar)
253 return p1 <= sl.pos() && sl.pos() < p2;
262 void MathData::metrics(MetricsInfo & mi, Dimension & dim, bool tight) const
264 frontend::FontMetrics const & fm = theFontMetrics(mi.base.font);
265 int const Iascent = fm.dimension('I').ascent();
266 int xascent = fm.dimension('x').ascent();
267 if (xascent >= Iascent)
268 xascent = (2 * Iascent) / 3;
270 mindes_ = (3 * xascent) / 4;
271 slevel_ = (4 * xascent) / 5;
272 sshift_ = xascent / 4;
274 MathRow mrow(mi, this);
275 mrow.metrics(mi, dim);
276 mrow_cache_[mi.base.bv] = mrow;
277 kerning_ = mrow.kerning(mi.base.bv);
279 // Set a minimal ascent/descent for the cell
281 // FIXME: this is the minimal ascent seen empirically, check
282 // what the TeXbook says.
283 dim.asc = max(dim.asc, fm.ascent('x'));
285 dim.asc = max(dim.asc, fm.maxAscent());
286 dim.des = max(dim.des, fm.maxDescent());
289 // Cache the dimension.
290 mi.base.bv->coordCache().arrays().add(this, dim);
294 void MathData::drawSelection(PainterInfo & pi, int const x, int const y) const
296 BufferView const * bv = pi.base.bv;
297 Cursor const & cur = bv->cursor();
298 InsetMath const * inset = cur.inset().asInsetMath();
299 if (!cur.selection() || !inset || inset->nargs() == 0)
302 CursorSlice const s1 = cur.selBegin();
303 CursorSlice const s2 = cur.selEnd();
304 MathData const & c1 = inset->cell(s1.idx());
306 if (s1.idx() == s2.idx() && &c1 == this) {
307 // selection indide cell
308 Dimension const dim = bv->coordCache().getArrays().dim(&c1);
309 int const beg = c1.pos2x(bv, s1.pos());
310 int const end = c1.pos2x(bv, s2.pos());
311 pi.pain.fillRectangle(x + beg, y - dim.ascent(),
312 end - beg, dim.height(), Color_selection);
314 for (idx_type i = 0; i < inset->nargs(); ++i) {
315 MathData const & c = inset->cell(i);
316 if (&c == this && inset->idxBetween(i, s1.idx(), s2.idx())) {
317 // The whole cell is selected
318 Dimension const dim = bv->coordCache().getArrays().dim(&c);
319 pi.pain.fillRectangle(x, y - dim.ascent(),
320 dim.width(), dim.height(),
328 void MathData::draw(PainterInfo & pi, int const x, int const y) const
330 //lyxerr << "MathData::draw: x: " << x << " y: " << y << endl;
331 setXY(*pi.base.bv, x, y);
333 drawSelection(pi, x, y);
334 MathRow const & mrow = mrow_cache_[pi.base.bv];
339 void MathData::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
343 for (const_iterator it = begin(); it != end(); ++it) {
344 (*it)->metricsT(mi, d);
350 void MathData::drawT(TextPainter & pain, int x, int y) const
352 //lyxerr << "x: " << x << " y: " << y << ' ' << pain.workAreaHeight() << endl;
354 // FIXME: Abdel 16/10/2006
355 // This drawT() method is never used, this is dead code.
357 for (const_iterator it = begin(), et = end(); it != et; ++it) {
358 (*it)->drawT(pain, x, y);
359 //x += (*it)->width_;
365 void MathData::updateBuffer(ParIterator const & it, UpdateType utype)
368 for (size_t i = 0, n = size(); i != n; ++i) {
369 MathAtom & at = operator[](i);
370 at.nucleus()->updateBuffer(it, utype);
375 void MathData::updateMacros(Cursor * cur, MacroContext const & mc,
376 UpdateType utype, int nesting)
378 // If we are editing a macro, we cannot update it immediately,
379 // otherwise wrong undo steps will be recorded (bug 6208).
380 InsetMath const * inmath = cur ? cur->inset().asInsetMath() : 0;
381 InsetMathMacro const * inmacro = inmath ? inmath->asMacro() : 0;
382 docstring const edited_name = inmacro ? inmacro->name() : docstring();
384 // go over the array and look for macros
385 for (size_t i = 0; i < size(); ++i) {
386 InsetMathMacro * macroInset = operator[](i).nucleus()->asMacro();
387 if (!macroInset || macroInset->macroName().empty()
388 || macroInset->macroName()[0] == '^'
389 || macroInset->macroName()[0] == '_'
390 || (macroInset->name() == edited_name
391 && macroInset->displayMode() ==
392 InsetMathMacro::DISPLAY_UNFOLDED))
396 macroInset->updateMacro(mc);
397 size_t macroNumArgs = 0;
398 size_t macroOptionals = 0;
399 MacroData const * macro = macroInset->macro();
401 macroNumArgs = macro->numargs();
402 macroOptionals = macro->optionals();
405 // store old and compute new display mode
406 InsetMathMacro::DisplayMode newDisplayMode;
407 InsetMathMacro::DisplayMode oldDisplayMode = macroInset->displayMode();
408 newDisplayMode = macroInset->computeDisplayMode();
410 // arity changed or other reason to detach?
411 if (oldDisplayMode == InsetMathMacro::DISPLAY_NORMAL
412 && (macroInset->arity() != macroNumArgs
413 || macroInset->optionals() != macroOptionals
414 || newDisplayMode == InsetMathMacro::DISPLAY_UNFOLDED))
415 detachMacroParameters(cur, i);
417 // the macro could have been copied while resizing this
418 macroInset = operator[](i).nucleus()->asMacro();
421 if (newDisplayMode != InsetMathMacro::DISPLAY_UNFOLDED
422 && oldDisplayMode == InsetMathMacro::DISPLAY_UNFOLDED) {
423 // put cursor in front of macro
425 int macroSlice = cur->find(macroInset);
426 if (macroSlice != -1)
427 cur->cutOff(macroSlice - 1);
431 // update the display mode
432 size_t appetite = macroInset->appetite();
433 macroInset->setDisplayMode(newDisplayMode);
436 if (newDisplayMode == InsetMathMacro::DISPLAY_NORMAL
437 && (macroInset->arity() != macroNumArgs
438 || macroInset->optionals() != macroOptionals)) {
439 // is it a virgin macro which was never attached to parameters?
440 bool fromInitToNormalMode
441 = (oldDisplayMode == InsetMathMacro::DISPLAY_INIT
442 || oldDisplayMode == InsetMathMacro::DISPLAY_INTERACTIVE_INIT)
443 && newDisplayMode == InsetMathMacro::DISPLAY_NORMAL;
445 // if the macro was entered interactively (i.e. not by paste or during
446 // loading), it should not be greedy, but the cursor should
447 // automatically jump into the macro when behind
448 bool interactive = (oldDisplayMode == InsetMathMacro::DISPLAY_INTERACTIVE_INIT);
451 attachMacroParameters(cur, i, macroNumArgs, macroOptionals,
452 fromInitToNormalMode, interactive, appetite);
455 cur->updateInsets(&cur->bottom().inset());
458 // Give macro the chance to adapt to new situation.
459 // The macroInset could be invalid now because it was put into a script
460 // inset and therefore "deep" copied. So get it again from the MathData.
461 InsetMath * inset = operator[](i).nucleus();
462 if (inset->asScriptInset())
463 inset = inset->asScriptInset()->nuc()[0].nucleus();
464 LASSERT(inset->asMacro(), continue);
465 inset->asMacro()->updateRepresentation(cur, mc, utype, nesting + 1);
470 void MathData::detachMacroParameters(DocIterator * cur, const size_type macroPos)
472 InsetMathMacro * macroInset = operator[](macroPos).nucleus()->asMacro();
473 // We store this now, because the inset pointer will be invalidated in the scond loop below
474 size_t const optionals = macroInset->optionals();
476 // detach all arguments
477 vector<MathData> detachedArgs;
478 if (macroPos + 1 == size())
479 // strip arguments if we are at the MathData end
480 macroInset->detachArguments(detachedArgs, true);
482 macroInset->detachArguments(detachedArgs, false);
485 int curMacroSlice = -1;
487 curMacroSlice = cur->find(macroInset);
488 idx_type curMacroIdx = -1;
489 pos_type curMacroPos = -1;
490 vector<CursorSlice> argSlices;
491 if (curMacroSlice != -1) {
492 curMacroPos = (*cur)[curMacroSlice].pos();
493 curMacroIdx = (*cur)[curMacroSlice].idx();
494 cur->cutOff(curMacroSlice, argSlices);
498 // only [] after the last non-empty argument can be dropped later
499 size_t lastNonEmptyOptional = 0;
500 for (size_t l = 0; l < detachedArgs.size() && l < optionals; ++l) {
501 if (!detachedArgs[l].empty())
502 lastNonEmptyOptional = l;
505 // optional arguments to be put back?
506 pos_type p = macroPos + 1;
508 // We do not want to use macroInset below, the insert() call in
509 // the loop will invalidate it.
511 for (; j < detachedArgs.size() && j < optionals; ++j) {
512 // another non-empty parameter follows?
513 bool canDropEmptyOptional = j >= lastNonEmptyOptional;
515 // then we can drop empty optional parameters
516 if (detachedArgs[j].empty() && canDropEmptyOptional) {
517 if (curMacroIdx == j)
518 (*cur)[curMacroSlice - 1].pos() = macroPos + 1;
522 // Otherwise we don't drop an empty optional, put it back normally
524 asArray(from_ascii("[]"), optarg);
525 MathData & arg = detachedArgs[j];
527 // look for "]", i.e. put a brace around?
528 InsetMathBrace * brace = 0;
529 for (size_t q = 0; q < arg.size(); ++q) {
530 if (arg[q]->getChar() == ']') {
532 brace = new InsetMathBrace(buffer_);
537 // put arg between []
539 brace->cell(0) = arg;
540 optarg.insert(1, MathAtom(brace));
542 optarg.insert(1, arg);
544 // insert it into the array
549 if (curMacroSlice == -1)
552 // cursor in optional argument of macro?
553 if (curMacroIdx == j) {
555 cur->append(0, curMacroPos);
556 (*cur)[curMacroSlice - 1].pos() = macroPos + 2;
558 (*cur)[curMacroSlice - 1].pos() = macroPos + 2 + curMacroPos;
559 cur->append(argSlices);
560 } else if ((*cur)[curMacroSlice - 1].pos() >= int(p))
561 // cursor right of macro
562 (*cur)[curMacroSlice - 1].pos() += optarg.size();
565 // put them back into the MathData
566 for (; j < detachedArgs.size(); ++j, ++p) {
567 MathData const & arg = detachedArgs[j];
569 && !arg[0]->asScriptInset()
570 && !(arg[0]->asMacro() && arg[0]->asMacro()->arity() > 0))
573 insert(p, MathAtom(new InsetMathBrace(arg)));
576 if (curMacroSlice == -1)
579 // cursor in j-th argument of macro?
580 if (curMacroIdx == j) {
581 if (operator[](p).nucleus()->asBraceInset()) {
582 (*cur)[curMacroSlice - 1].pos() = p;
583 cur->append(0, curMacroPos);
584 cur->append(argSlices);
586 (*cur)[curMacroSlice - 1].pos() = p; // + macroPos;
587 cur->append(argSlices);
589 } else if ((*cur)[curMacroSlice - 1].pos() >= int(p))
590 ++(*cur)[curMacroSlice - 1].pos();
594 cur->updateInsets(&cur->bottom().inset());
598 void MathData::attachMacroParameters(Cursor * cur,
599 const size_type macroPos, const size_type macroNumArgs,
600 const int macroOptionals, const bool fromInitToNormalMode,
601 const bool interactiveInit, const size_t appetite)
603 InsetMathMacro * macroInset = operator[](macroPos).nucleus()->asMacro();
605 // start at atom behind the macro again, maybe with some new arguments
606 // from the detach phase above, to add them back into the macro inset
607 size_t p = macroPos + 1;
608 vector<MathData> detachedArgs;
609 MathAtom scriptToPutAround;
611 // find cursor slice again of this MathData
614 thisSlice = cur->find(*this);
617 thisPos = (*cur)[thisSlice].pos();
619 // find arguments behind the macro
620 if (!interactiveInit) {
621 collectOptionalParameters(cur, macroOptionals, detachedArgs, p,
622 scriptToPutAround, macroPos, thisPos, thisSlice);
624 collectParameters(cur, macroNumArgs, detachedArgs, p,
625 scriptToPutAround, macroPos, thisPos, thisSlice, appetite);
627 // attach arguments back to macro inset
628 macroInset->attachArguments(detachedArgs, macroNumArgs, macroOptionals);
630 // found tail script? E.g. \foo{a}b^x
631 if (scriptToPutAround.nucleus()) {
632 InsetMathScript * scriptInset =
633 scriptToPutAround.nucleus()->asScriptInset();
634 // In the math parser we remove empty braces in the base
635 // of a script inset, but we have to restore them here.
636 if (scriptInset->nuc().empty()) {
638 scriptInset->nuc().push_back(
639 MathAtom(new InsetMathBrace(ar)));
641 // put macro into a script inset
642 scriptInset->nuc()[0] = operator[](macroPos);
643 operator[](macroPos) = scriptToPutAround;
645 // go into the script inset nucleus
646 if (cur && thisPos == int(macroPos))
649 // get pointer to "deep" copied macro inset
650 scriptInset = operator[](macroPos).nucleus()->asScriptInset();
651 macroInset = scriptInset->nuc()[0].nucleus()->asMacro();
654 // remove them from the MathData
655 erase(macroPos + 1, p);
657 // cursor outside this MathData?
661 // fix cursor if right of p
662 if (thisPos >= int(p))
663 (*cur)[thisSlice].pos() -= p - (macroPos + 1);
665 // was the macro inset just inserted interactively and was now folded
666 // and the cursor is just behind?
667 if ((*cur)[thisSlice].pos() == int(macroPos + 1)
669 && fromInitToNormalMode
670 && macroInset->arity() > 0
671 && thisSlice + 1 == int(cur->depth())) {
672 // then enter it if the cursor was just behind
673 (*cur)[thisSlice].pos() = macroPos;
674 cur->push_back(CursorSlice(*macroInset));
675 macroInset->idxFirst(*cur);
680 void MathData::collectOptionalParameters(Cursor * cur,
681 const size_type numOptionalParams, vector<MathData> & params,
682 size_t & pos, MathAtom & scriptToPutAround,
683 const pos_type macroPos, const int thisPos, const int thisSlice)
685 Buffer * buf = cur ? cur->buffer() : 0;
686 // insert optional arguments?
687 while (params.size() < numOptionalParams
689 && !scriptToPutAround.nucleus()) {
690 // is a [] block following which could be an optional parameter?
691 if (operator[](pos)->getChar() != '[')
694 // found possible optional argument, look for pairing "]"
696 size_t right = pos + 1;
697 for (; right < size(); ++right) {
698 MathAtom & cell = operator[](right);
700 if (cell->getChar() == '[')
702 else if (cell->getChar() == ']' && --count == 0)
706 // maybe "]" with a script around?
707 InsetMathScript * script = cell.nucleus()->asScriptInset();
710 if (script->nuc().size() != 1)
712 if (script->nuc()[0]->getChar() == ']') {
713 // script will be put around the macro later
714 scriptToPutAround = cell;
720 if (right >= size()) {
721 // no ] found, so it's not an optional argument
725 // add everything between [ and ] as optional argument
726 MathData optarg(buf, begin() + pos + 1, begin() + right);
730 if (optarg.size() == 1 && optarg[0]->asBraceInset()) {
732 params.push_back(optarg[0]->asBraceInset()->cell(0));
734 params.push_back(optarg);
736 // place cursor in optional argument of macro
737 // Note: The two expressions on the first line are equivalent
738 // (see caller), but making this explicit pleases coverity.
739 if (cur && thisSlice != -1
740 && thisPos >= int(pos) && thisPos <= int(right)) {
741 int paramPos = max(0, thisPos - int(pos) - 1);
742 vector<CursorSlice> x;
743 cur->cutOff(thisSlice, x);
744 (*cur)[thisSlice].pos() = macroPos;
746 paramPos = x[0].pos();
749 cur->append(0, paramPos);
755 // fill up empty optional parameters
756 while (params.size() < numOptionalParams)
757 params.push_back(MathData());
761 void MathData::collectParameters(Cursor * cur,
762 const size_type numParams, vector<MathData> & params,
763 size_t & pos, MathAtom & scriptToPutAround,
764 const pos_type macroPos, const int thisPos, const int thisSlice,
765 const size_t appetite)
767 size_t startSize = params.size();
769 // insert normal arguments
770 while (params.size() < numParams
771 && params.size() - startSize < appetite
773 && !scriptToPutAround.nucleus()) {
774 MathAtom & cell = operator[](pos);
777 vector<CursorSlice> argSlices;
779 // Note: The two expressions on the first line are equivalent
780 // (see caller), but making this explicit pleases coverity.
781 if (cur && thisSlice != -1
782 && thisPos == int(pos))
783 cur->cutOff(thisSlice, argSlices);
785 // which kind of parameter is it? In {}? With index x^n?
786 InsetMathBrace const * brace = cell->asBraceInset();
788 // found brace, convert into argument
789 params.push_back(brace->cell(0));
791 // cursor inside of the brace or just in front of?
792 if (thisPos == int(pos) && !argSlices.empty()) {
793 argPos = argSlices[0].pos();
794 argSlices.erase(argSlices.begin());
796 } else if (cell->asScriptInset() && params.size() + 1 == numParams) {
797 // last inset with scripts without braces
798 // -> they belong to the macro, not the argument
799 InsetMathScript * script = cell.nucleus()->asScriptInset();
800 if (script->nuc().size() == 1 && script->nuc()[0]->asBraceInset())
801 // nucleus in brace? Unpack!
802 params.push_back(script->nuc()[0]->asBraceInset()->cell(0));
804 params.push_back(script->nuc());
806 // script will be put around below
807 scriptToPutAround = cell;
809 // this should only happen after loading, so make cursor handling simple
810 if (thisPos >= int(macroPos) && thisPos <= int(macroPos + numParams)) {
816 // the simplest case: plain inset
818 array.insert(0, cell);
819 params.push_back(array);
822 // put cursor in argument again
823 // Note: The first two expressions on the first line are
824 // equivalent (see caller), but making this explicit pleases
826 if (cur && thisSlice != -1 && thisPos == int(pos)) {
827 cur->append(params.size() - 1, argPos);
828 cur->append(argSlices);
829 (*cur)[thisSlice].pos() = macroPos;
837 int MathData::pos2x(BufferView const * bv, size_type pos) const
840 size_type target = min(pos, size());
841 CoordCache::Insets const & coords = bv->coordCache().getInsets();
842 for (size_type i = 0; i < target; ++i) {
843 const_iterator it = begin() + i;
844 //lyxerr << "char: " << (*it)->getChar()
845 // << "width: " << (*it)->width() << endl;
846 x += coords.dim((*it).nucleus()).wid;
852 MathData::size_type MathData::x2pos(BufferView const * bv, int targetx) const
854 const_iterator it = begin();
857 CoordCache::Insets const & coords = bv->coordCache().getInsets();
858 // find first position after targetx
859 for (; currx < targetx && it != end(); ++it) {
861 currx += coords.dim((*it).nucleus()).wid;
865 * If we are not at the beginning of the array, go to the left
866 * of the inset if one of the following two condition holds:
867 * - the current inset is editable (so that the cursor tip is
868 * deeper than us): in this case, we want all intermediate
869 * cursor slices to be before insets;
870 * - the mouse is closer to the left side of the inset than to
872 * See bug 1918 for details.
874 if (it != begin() && currx >= targetx
875 && ((*prev(it, 1))->asNestInset()
876 || abs(lastx - targetx) < abs(currx - targetx))) {
884 int MathData::dist(BufferView const & bv, int x, int y) const
886 return bv.coordCache().getArrays().squareDistance(this, x, y);
890 void MathData::setXY(BufferView & bv, int x, int y) const
892 //lyxerr << "setting position cache for MathData " << this << endl;
893 bv.coordCache().arrays().add(this, x, y);
897 Dimension const & MathData::dimension(BufferView const & bv) const
899 return bv.coordCache().getArrays().dim(this);
903 int MathData::xm(BufferView const & bv) const
905 Geometry const & g = bv.coordCache().getArrays().geometry(this);
907 return g.pos.x_ + g.dim.wid / 2;
911 int MathData::ym(BufferView const & bv) const
913 Geometry const & g = bv.coordCache().getArrays().geometry(this);
915 return g.pos.y_ + (g.dim.des - g.dim.asc) / 2;
919 int MathData::xo(BufferView const & bv) const
921 return bv.coordCache().getArrays().x(this);
925 int MathData::yo(BufferView const & bv) const
927 return bv.coordCache().getArrays().y(this);
931 MathClass MathData::mathClass() const
933 MathClass res = MC_UNKNOWN;
934 for (MathAtom const & at : *this) {
935 MathClass mc = at->mathClass();
936 if (res == MC_UNKNOWN)
938 else if (mc != MC_UNKNOWN && res != mc)
941 return res == MC_UNKNOWN ? MC_ORD : res;
945 ostream & operator<<(ostream & os, MathData const & ar)
947 odocstringstream oss;
948 NormalStream ns(oss);
950 return os << to_utf8(oss.str());
954 odocstream & operator<<(odocstream & os, MathData const & ar)