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 "MathMacro.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 void MathData::touch() const
220 bool MathData::addToMathRow(MathRow & mrow, MetricsInfo & mi) const
222 bool has_contents = false;
223 BufferView * bv = mi.base.bv;
224 MathData * ar = const_cast<MathData*>(this);
225 ar->updateMacros(&bv->cursor(), mi.macrocontext,
226 InternalUpdate, mi.base.macro_nesting);
229 // FIXME: for completion, try to insert the relevant data in the
230 // mathrow (like is done for text rows). We could add a pair of
231 // InsetMathColor inset, but these come with extra spacing of
233 DocIterator const & inlineCompletionPos = bv->inlineCompletionPos();
234 bool const has_completion = inlineCompletionPos.inMathed()
235 && &inlineCompletionPos.cell() == this;
236 size_t const compl_pos = has_completion ? inlineCompletionPos.pos() : 0;
238 for (size_t i = 0 ; i < size() ; ++i) {
239 has_contents |= (*this)[i]->addToMathRow(mrow, mi);
240 if (i + 1 == compl_pos) {
241 mrow.back().compl_text = bv->inlineCompletion();
242 mrow.back().compl_unique_to = bv->inlineCompletionUniqueChars();
252 bool isInside(DocIterator const & it, MathData const & ar,
253 pos_type p1, pos_type p2)
255 for (size_t i = 0; i != it.depth(); ++i) {
256 CursorSlice const & sl = it[i];
257 if (sl.inset().inMathed() && &sl.cell() == &ar)
258 return p1 <= sl.pos() && sl.pos() < p2;
267 void MathData::metrics(MetricsInfo & mi, Dimension & dim) const
269 frontend::FontMetrics const & fm = theFontMetrics(mi.base.font);
270 dim = fm.dimension('I');
271 int xascent = fm.dimension('x').ascent();
272 if (xascent >= dim.asc)
273 xascent = (2 * dim.asc) / 3;
275 mindes_ = (3 * xascent) / 4;
276 slevel_ = (4 * xascent) / 5;
277 sshift_ = xascent / 4;
279 MathRow mrow(mi, this);
280 mrow_cache_[mi.base.bv] = mrow;
281 mrow.metrics(mi, dim);
282 kerning_ = mrow.kerning(mi.base.bv);
284 // Cache the dimension.
285 mi.base.bv->coordCache().arrays().add(this, dim);
289 void MathData::drawSelection(PainterInfo & pi, int const x, int const y) const
291 BufferView const * bv = pi.base.bv;
292 Cursor const & cur = bv->cursor();
293 InsetMath const * inset = cur.inset().asInsetMath();
294 if (!cur.selection() || !inset || inset->nargs() == 0)
297 CursorSlice const s1 = cur.selBegin();
298 CursorSlice const s2 = cur.selEnd();
299 MathData const & c1 = inset->cell(s1.idx());
301 if (s1.idx() == s2.idx() && &c1 == this) {
302 // selection indide cell
303 Dimension const dim = bv->coordCache().getArrays().dim(&c1);
304 int const beg = c1.pos2x(bv, s1.pos());
305 int const end = c1.pos2x(bv, s2.pos());
306 pi.pain.fillRectangle(x + beg, y - dim.ascent(),
307 end - beg, dim.height(), Color_selection);
309 for (idx_type i = 0; i < inset->nargs(); ++i) {
310 MathData const & c = inset->cell(i);
311 if (&c == this && inset->idxBetween(i, s1.idx(), s2.idx())) {
312 // The whole cell is selected
313 Dimension const dim = bv->coordCache().getArrays().dim(&c);
314 pi.pain.fillRectangle(x, y - dim.ascent(),
315 dim.width(), dim.height(),
323 void MathData::draw(PainterInfo & pi, int const x, int const y) const
325 //lyxerr << "MathData::draw: x: " << x << " y: " << y << endl;
326 BufferView & bv = *pi.base.bv;
329 Dimension const & dim = bv.coordCache().getArrays().dim(this);
331 // don't draw outside the workarea
332 if (y + dim.descent() <= 0
333 || y - dim.ascent() >= bv.workHeight()
334 || x + dim.width() <= 0
335 || x >= bv. workWidth())
338 drawSelection(pi, x, y);
339 MathRow const & mrow = mrow_cache_[pi.base.bv];
344 void MathData::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
348 for (const_iterator it = begin(); it != end(); ++it) {
349 (*it)->metricsT(mi, d);
355 void MathData::drawT(TextPainter & pain, int x, int y) const
357 //lyxerr << "x: " << x << " y: " << y << ' ' << pain.workAreaHeight() << endl;
359 // FIXME: Abdel 16/10/2006
360 // This drawT() method is never used, this is dead code.
362 for (const_iterator it = begin(), et = end(); it != et; ++it) {
363 (*it)->drawT(pain, x, y);
364 //x += (*it)->width_;
370 void MathData::updateBuffer(ParIterator const & it, UpdateType utype)
373 for (size_t i = 0, n = size(); i != n; ++i) {
374 MathAtom & at = operator[](i);
375 at.nucleus()->updateBuffer(it, utype);
380 void MathData::updateMacros(Cursor * cur, MacroContext const & mc,
381 UpdateType utype, int nesting)
383 // If we are editing a macro, we cannot update it immediately,
384 // otherwise wrong undo steps will be recorded (bug 6208).
385 InsetMath const * inmath = cur ? cur->inset().asInsetMath() : 0;
386 MathMacro const * inmacro = inmath ? inmath->asMacro() : 0;
387 docstring const edited_name = inmacro ? inmacro->name() : docstring();
389 // go over the array and look for macros
390 for (size_t i = 0; i < size(); ++i) {
391 MathMacro * macroInset = operator[](i).nucleus()->asMacro();
392 if (!macroInset || macroInset->macroName().empty()
393 || macroInset->macroName()[0] == '^'
394 || macroInset->macroName()[0] == '_'
395 || (macroInset->name() == edited_name
396 && macroInset->displayMode() ==
397 MathMacro::DISPLAY_UNFOLDED))
401 macroInset->updateMacro(mc);
402 size_t macroNumArgs = 0;
403 size_t macroOptionals = 0;
404 MacroData const * macro = macroInset->macro();
406 macroNumArgs = macro->numargs();
407 macroOptionals = macro->optionals();
410 // store old and compute new display mode
411 MathMacro::DisplayMode newDisplayMode;
412 MathMacro::DisplayMode oldDisplayMode = macroInset->displayMode();
413 newDisplayMode = macroInset->computeDisplayMode();
415 // arity changed or other reason to detach?
416 if (oldDisplayMode == MathMacro::DISPLAY_NORMAL
417 && (macroInset->arity() != macroNumArgs
418 || macroInset->optionals() != macroOptionals
419 || newDisplayMode == MathMacro::DISPLAY_UNFOLDED))
420 detachMacroParameters(cur, i);
422 // the macro could have been copied while resizing this
423 macroInset = operator[](i).nucleus()->asMacro();
426 if (newDisplayMode != MathMacro::DISPLAY_UNFOLDED
427 && oldDisplayMode == MathMacro::DISPLAY_UNFOLDED) {
428 // put cursor in front of macro
430 int macroSlice = cur->find(macroInset);
431 if (macroSlice != -1)
432 cur->cutOff(macroSlice - 1);
436 // update the display mode
437 size_t appetite = macroInset->appetite();
438 macroInset->setDisplayMode(newDisplayMode);
441 if (newDisplayMode == MathMacro::DISPLAY_NORMAL
442 && (macroInset->arity() != macroNumArgs
443 || macroInset->optionals() != macroOptionals)) {
444 // is it a virgin macro which was never attached to parameters?
445 bool fromInitToNormalMode
446 = (oldDisplayMode == MathMacro::DISPLAY_INIT
447 || oldDisplayMode == MathMacro::DISPLAY_INTERACTIVE_INIT)
448 && newDisplayMode == MathMacro::DISPLAY_NORMAL;
450 // if the macro was entered interactively (i.e. not by paste or during
451 // loading), it should not be greedy, but the cursor should
452 // automatically jump into the macro when behind
453 bool interactive = (oldDisplayMode == MathMacro::DISPLAY_INTERACTIVE_INIT);
456 attachMacroParameters(cur, i, macroNumArgs, macroOptionals,
457 fromInitToNormalMode, interactive, appetite);
460 cur->updateInsets(&cur->bottom().inset());
463 // Give macro the chance to adapt to new situation.
464 // The macroInset could be invalid now because it was put into a script
465 // inset and therefore "deep" copied. So get it again from the MathData.
466 InsetMath * inset = operator[](i).nucleus();
467 if (inset->asScriptInset())
468 inset = inset->asScriptInset()->nuc()[0].nucleus();
469 LASSERT(inset->asMacro(), continue);
470 inset->asMacro()->updateRepresentation(cur, mc, utype, nesting + 1);
475 void MathData::detachMacroParameters(DocIterator * cur, const size_type macroPos)
477 MathMacro * macroInset = operator[](macroPos).nucleus()->asMacro();
478 // We store this now, because the inset pointer will be invalidated in the scond loop below
479 size_t const optionals = macroInset->optionals();
481 // detach all arguments
482 vector<MathData> detachedArgs;
483 if (macroPos + 1 == size())
484 // strip arguments if we are at the MathData end
485 macroInset->detachArguments(detachedArgs, true);
487 macroInset->detachArguments(detachedArgs, false);
490 int curMacroSlice = -1;
492 curMacroSlice = cur->find(macroInset);
493 idx_type curMacroIdx = -1;
494 pos_type curMacroPos = -1;
495 vector<CursorSlice> argSlices;
496 if (curMacroSlice != -1) {
497 curMacroPos = (*cur)[curMacroSlice].pos();
498 curMacroIdx = (*cur)[curMacroSlice].idx();
499 cur->cutOff(curMacroSlice, argSlices);
503 // only [] after the last non-empty argument can be dropped later
504 size_t lastNonEmptyOptional = 0;
505 for (size_t l = 0; l < detachedArgs.size() && l < optionals; ++l) {
506 if (!detachedArgs[l].empty())
507 lastNonEmptyOptional = l;
510 // optional arguments to be put back?
511 pos_type p = macroPos + 1;
513 // We do not want to use macroInset below, the insert() call in
514 // the loop will invalidate it.
516 for (; j < detachedArgs.size() && j < optionals; ++j) {
517 // another non-empty parameter follows?
518 bool canDropEmptyOptional = j >= lastNonEmptyOptional;
520 // then we can drop empty optional parameters
521 if (detachedArgs[j].empty() && canDropEmptyOptional) {
522 if (curMacroIdx == j)
523 (*cur)[curMacroSlice - 1].pos() = macroPos + 1;
527 // Otherwise we don't drop an empty optional, put it back normally
529 asArray(from_ascii("[]"), optarg);
530 MathData & arg = detachedArgs[j];
532 // look for "]", i.e. put a brace around?
533 InsetMathBrace * brace = 0;
534 for (size_t q = 0; q < arg.size(); ++q) {
535 if (arg[q]->getChar() == ']') {
537 brace = new InsetMathBrace(buffer_);
542 // put arg between []
544 brace->cell(0) = arg;
545 optarg.insert(1, MathAtom(brace));
547 optarg.insert(1, arg);
549 // insert it into the array
554 if (curMacroSlice == -1)
557 // cursor in optional argument of macro?
558 if (curMacroIdx == j) {
560 cur->append(0, curMacroPos);
561 (*cur)[curMacroSlice - 1].pos() = macroPos + 2;
563 (*cur)[curMacroSlice - 1].pos() = macroPos + 2 + curMacroPos;
564 cur->append(argSlices);
565 } else if ((*cur)[curMacroSlice - 1].pos() >= int(p))
566 // cursor right of macro
567 (*cur)[curMacroSlice - 1].pos() += optarg.size();
570 // put them back into the MathData
571 for (; j < detachedArgs.size(); ++j, ++p) {
572 MathData const & arg = detachedArgs[j];
574 && !arg[0]->asScriptInset()
575 && !(arg[0]->asMacro() && arg[0]->asMacro()->arity() > 0))
578 insert(p, MathAtom(new InsetMathBrace(arg)));
581 if (curMacroSlice == -1)
584 // cursor in j-th argument of macro?
585 if (curMacroIdx == j) {
586 if (operator[](p).nucleus()->asBraceInset()) {
587 (*cur)[curMacroSlice - 1].pos() = p;
588 cur->append(0, curMacroPos);
589 cur->append(argSlices);
591 (*cur)[curMacroSlice - 1].pos() = p; // + macroPos;
592 cur->append(argSlices);
594 } else if ((*cur)[curMacroSlice - 1].pos() >= int(p))
595 ++(*cur)[curMacroSlice - 1].pos();
599 cur->updateInsets(&cur->bottom().inset());
603 void MathData::attachMacroParameters(Cursor * cur,
604 const size_type macroPos, const size_type macroNumArgs,
605 const int macroOptionals, const bool fromInitToNormalMode,
606 const bool interactiveInit, const size_t appetite)
608 MathMacro * macroInset = operator[](macroPos).nucleus()->asMacro();
610 // start at atom behind the macro again, maybe with some new arguments
611 // from the detach phase above, to add them back into the macro inset
612 size_t p = macroPos + 1;
613 vector<MathData> detachedArgs;
614 MathAtom scriptToPutAround;
616 // find cursor slice again of this MathData
619 thisSlice = cur->find(*this);
622 thisPos = (*cur)[thisSlice].pos();
624 // find arguments behind the macro
625 if (!interactiveInit) {
626 collectOptionalParameters(cur, macroOptionals, detachedArgs, p,
627 scriptToPutAround, macroPos, thisPos, thisSlice);
629 collectParameters(cur, macroNumArgs, detachedArgs, p,
630 scriptToPutAround, macroPos, thisPos, thisSlice, appetite);
632 // attach arguments back to macro inset
633 macroInset->attachArguments(detachedArgs, macroNumArgs, macroOptionals);
635 // found tail script? E.g. \foo{a}b^x
636 if (scriptToPutAround.nucleus()) {
637 InsetMathScript * scriptInset =
638 scriptToPutAround.nucleus()->asScriptInset();
639 // In the math parser we remove empty braces in the base
640 // of a script inset, but we have to restore them here.
641 if (scriptInset->nuc().empty()) {
643 scriptInset->nuc().push_back(
644 MathAtom(new InsetMathBrace(ar)));
646 // put macro into a script inset
647 scriptInset->nuc()[0] = operator[](macroPos);
648 operator[](macroPos) = scriptToPutAround;
650 // go into the script inset nucleus
651 if (cur && thisPos == int(macroPos))
654 // get pointer to "deep" copied macro inset
655 scriptInset = operator[](macroPos).nucleus()->asScriptInset();
656 macroInset = scriptInset->nuc()[0].nucleus()->asMacro();
659 // remove them from the MathData
660 erase(macroPos + 1, p);
662 // cursor outside this MathData?
666 // fix cursor if right of p
667 if (thisPos >= int(p))
668 (*cur)[thisSlice].pos() -= p - (macroPos + 1);
670 // was the macro inset just inserted interactively and was now folded
671 // and the cursor is just behind?
672 if ((*cur)[thisSlice].pos() == int(macroPos + 1)
674 && fromInitToNormalMode
675 && macroInset->arity() > 0
676 && thisSlice + 1 == int(cur->depth())) {
677 // then enter it if the cursor was just behind
678 (*cur)[thisSlice].pos() = macroPos;
679 cur->push_back(CursorSlice(*macroInset));
680 macroInset->idxFirst(*cur);
685 void MathData::collectOptionalParameters(Cursor * cur,
686 const size_type numOptionalParams, vector<MathData> & params,
687 size_t & pos, MathAtom & scriptToPutAround,
688 const pos_type macroPos, const int thisPos, const int thisSlice)
690 Buffer * buf = cur ? cur->buffer() : 0;
691 // insert optional arguments?
692 while (params.size() < numOptionalParams
694 && !scriptToPutAround.nucleus()) {
695 // is a [] block following which could be an optional parameter?
696 if (operator[](pos)->getChar() != '[')
699 // found possible optional argument, look for pairing "]"
701 size_t right = pos + 1;
702 for (; right < size(); ++right) {
703 MathAtom & cell = operator[](right);
705 if (cell->getChar() == '[')
707 else if (cell->getChar() == ']' && --count == 0)
711 // maybe "]" with a script around?
712 InsetMathScript * script = cell.nucleus()->asScriptInset();
715 if (script->nuc().size() != 1)
717 if (script->nuc()[0]->getChar() == ']') {
718 // script will be put around the macro later
719 scriptToPutAround = cell;
725 if (right >= size()) {
726 // no ] found, so it's not an optional argument
730 // add everything between [ and ] as optional argument
731 MathData optarg(buf, begin() + pos + 1, begin() + right);
735 if (optarg.size() == 1 && optarg[0]->asBraceInset()) {
737 params.push_back(optarg[0]->asBraceInset()->cell(0));
739 params.push_back(optarg);
741 // place cursor in optional argument of macro
742 // Note: The two expressions on the first line are equivalent
743 // (see caller), but making this explicit pleases coverity.
744 if (cur && thisSlice != -1
745 && thisPos >= int(pos) && thisPos <= int(right)) {
746 int paramPos = max(0, thisPos - int(pos) - 1);
747 vector<CursorSlice> x;
748 cur->cutOff(thisSlice, x);
749 (*cur)[thisSlice].pos() = macroPos;
751 paramPos = x[0].pos();
754 cur->append(0, paramPos);
760 // fill up empty optional parameters
761 while (params.size() < numOptionalParams)
762 params.push_back(MathData());
766 void MathData::collectParameters(Cursor * cur,
767 const size_type numParams, vector<MathData> & params,
768 size_t & pos, MathAtom & scriptToPutAround,
769 const pos_type macroPos, const int thisPos, const int thisSlice,
770 const size_t appetite)
772 size_t startSize = params.size();
774 // insert normal arguments
775 while (params.size() < numParams
776 && params.size() - startSize < appetite
778 && !scriptToPutAround.nucleus()) {
779 MathAtom & cell = operator[](pos);
782 vector<CursorSlice> argSlices;
784 // Note: The two expressions on the first line are equivalent
785 // (see caller), but making this explicit pleases coverity.
786 if (cur && thisSlice != -1
787 && thisPos == int(pos))
788 cur->cutOff(thisSlice, argSlices);
790 // which kind of parameter is it? In {}? With index x^n?
791 InsetMathBrace const * brace = cell->asBraceInset();
793 // found brace, convert into argument
794 params.push_back(brace->cell(0));
796 // cursor inside of the brace or just in front of?
797 if (thisPos == int(pos) && !argSlices.empty()) {
798 argPos = argSlices[0].pos();
799 argSlices.erase(argSlices.begin());
801 } else if (cell->asScriptInset() && params.size() + 1 == numParams) {
802 // last inset with scripts without braces
803 // -> they belong to the macro, not the argument
804 InsetMathScript * script = cell.nucleus()->asScriptInset();
805 if (script->nuc().size() == 1 && script->nuc()[0]->asBraceInset())
806 // nucleus in brace? Unpack!
807 params.push_back(script->nuc()[0]->asBraceInset()->cell(0));
809 params.push_back(script->nuc());
811 // script will be put around below
812 scriptToPutAround = cell;
814 // this should only happen after loading, so make cursor handling simple
815 if (thisPos >= int(macroPos) && thisPos <= int(macroPos + numParams)) {
821 // the simplest case: plain inset
823 array.insert(0, cell);
824 params.push_back(array);
827 // put cursor in argument again
828 // Note: The first two expressions on the first line are
829 // equivalent (see caller), but making this explicit pleases
831 if (cur && thisSlice != -1 && thisPos == int(pos)) {
832 cur->append(params.size() - 1, argPos);
833 cur->append(argSlices);
834 (*cur)[thisSlice].pos() = macroPos;
842 int MathData::pos2x(BufferView const * bv, size_type pos) const
845 size_type target = min(pos, size());
846 CoordCache::Insets const & coords = bv->coordCache().getInsets();
847 for (size_type i = 0; i < target; ++i) {
848 const_iterator it = begin() + i;
849 //lyxerr << "char: " << (*it)->getChar()
850 // << "width: " << (*it)->width() << endl;
851 x += coords.dim((*it).nucleus()).wid;
857 MathData::size_type MathData::x2pos(BufferView const * bv, int targetx) const
859 const_iterator it = begin();
862 CoordCache::Insets const & coords = bv->coordCache().getInsets();
863 // find first position after targetx
864 for (; currx < targetx && it != end(); ++it) {
866 currx += coords.dim((*it).nucleus()).wid;
870 * If we are not at the beginning of the array, go to the left
871 * of the inset if one of the following two condition holds:
872 * - the current inset is editable (so that the cursor tip is
873 * deeper than us): in this case, we want all intermediate
874 * cursor slices to be before insets;
875 * - the mouse is closer to the left side of the inset than to
877 * See bug 1918 for details.
879 if (it != begin() && currx >= targetx
880 && ((*prev(it, 1))->asNestInset()
881 || abs(lastx - targetx) < abs(currx - targetx))) {
889 int MathData::dist(BufferView const & bv, int x, int y) const
891 return bv.coordCache().getArrays().squareDistance(this, x, y);
895 void MathData::setXY(BufferView & bv, int x, int y) const
897 //lyxerr << "setting position cache for MathData " << this << endl;
898 bv.coordCache().arrays().add(this, x, y);
902 Dimension const & MathData::dimension(BufferView const & bv) const
904 return bv.coordCache().getArrays().dim(this);
908 int MathData::xm(BufferView const & bv) const
910 Geometry const & g = bv.coordCache().getArrays().geometry(this);
912 return g.pos.x_ + g.dim.wid / 2;
916 int MathData::ym(BufferView const & bv) const
918 Geometry const & g = bv.coordCache().getArrays().geometry(this);
920 return g.pos.y_ + (g.dim.des - g.dim.asc) / 2;
924 int MathData::xo(BufferView const & bv) const
926 return bv.coordCache().getArrays().x(this);
930 int MathData::yo(BufferView const & bv) const
932 return bv.coordCache().getArrays().y(this);
936 MathClass MathData::mathClass() const
938 MathClass res = MC_UNKNOWN;
939 for (MathAtom const & at : *this) {
940 MathClass mc = at->mathClass();
941 if (res == MC_UNKNOWN)
943 else if (mc != MC_UNKNOWN && res != mc)
946 return res == MC_UNKNOWN ? MC_ORD : res;
950 ostream & operator<<(ostream & os, MathData const & ar)
952 odocstringstream oss;
953 NormalStream ns(oss);
955 return os << to_utf8(oss.str());
959 odocstream & operator<<(odocstream & os, MathData const & ar)