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 const & 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,
228 // FIXME: for completion, try to insert the relevant data in the
229 // mathrow (like is done for text rows). We could add a pair of
230 // InsetMathColor inset, but these come with extra spacing of
232 DocIterator const & inlineCompletionPos = bv->inlineCompletionPos();
233 bool const has_completion = inlineCompletionPos.inMathed()
234 && &inlineCompletionPos.cell() == this;
235 size_t const compl_pos = has_completion ? inlineCompletionPos.pos() : 0;
237 for (size_t i = 0 ; i < size() ; ++i) {
238 has_contents |= (*this)[i]->addToMathRow(mrow, mi);
239 if (i + 1 == compl_pos) {
240 mrow.back().compl_text = bv->inlineCompletion();
241 mrow.back().compl_unique_to = bv->inlineCompletionUniqueChars();
251 bool isInside(DocIterator const & it, MathData const & ar,
252 pos_type p1, pos_type p2)
254 for (size_t i = 0; i != it.depth(); ++i) {
255 CursorSlice const & sl = it[i];
256 if (sl.inset().inMathed() && &sl.cell() == &ar)
257 return p1 <= sl.pos() && sl.pos() < p2;
266 void MathData::metrics(MetricsInfo & mi, Dimension & dim) const
268 frontend::FontMetrics const & fm = theFontMetrics(mi.base.font);
269 dim = fm.dimension('I');
270 int xascent = fm.dimension('x').ascent();
271 if (xascent >= dim.asc)
272 xascent = (2 * dim.asc) / 3;
274 mindes_ = (3 * xascent) / 4;
275 slevel_ = (4 * xascent) / 5;
276 sshift_ = xascent / 4;
279 // Cache the dimension.
280 mi.base.bv->coordCache().arrays().add(this, dim);
284 MathRow mrow(mi, this);
285 mrow_cache_[mi.base.bv] = mrow;
286 mrow.metrics(mi, dim);
287 kerning_ = mrow.kerning(mi.base.bv);
289 // Cache the dimension.
290 mi.base.bv->coordCache().arrays().add(this, dim);
294 void MathData::draw(PainterInfo & pi, int const x, int const y) const
296 //lyxerr << "MathData::draw: x: " << x << " y: " << y << endl;
297 BufferView & bv = *pi.base.bv;
300 Dimension const & dim = bv.coordCache().getArrays().dim(this);
303 pi.pain.rectangle(x, y - dim.ascent(), dim.width(), dim.height(), Color_mathline);
307 // don't draw outside the workarea
308 if (y + dim.descent() <= 0
309 || y - dim.ascent() >= bv.workHeight()
310 || x + dim.width() <= 0
311 || x >= bv. workWidth())
314 MathRow const & mrow = mrow_cache_[pi.base.bv];
319 void MathData::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
323 for (const_iterator it = begin(); it != end(); ++it) {
324 (*it)->metricsT(mi, d);
330 void MathData::drawT(TextPainter & pain, int x, int y) const
332 //lyxerr << "x: " << x << " y: " << y << ' ' << pain.workAreaHeight() << endl;
334 // FIXME: Abdel 16/10/2006
335 // This drawT() method is never used, this is dead code.
337 for (const_iterator it = begin(), et = end(); it != et; ++it) {
338 (*it)->drawT(pain, x, y);
339 //x += (*it)->width_;
345 void MathData::updateBuffer(ParIterator const & it, UpdateType utype)
348 for (size_t i = 0, n = size(); i != n; ++i) {
349 MathAtom & at = operator[](i);
350 at.nucleus()->updateBuffer(it, utype);
355 void MathData::updateMacros(Cursor * cur, MacroContext const & mc,
358 // If we are editing a macro, we cannot update it immediately,
359 // otherwise wrong undo steps will be recorded (bug 6208).
360 InsetMath const * inmath = cur ? cur->inset().asInsetMath() : 0;
361 MathMacro const * inmacro = inmath ? inmath->asMacro() : 0;
362 docstring const edited_name = inmacro ? inmacro->name() : docstring();
364 // go over the array and look for macros
365 for (size_t i = 0; i < size(); ++i) {
366 MathMacro * macroInset = operator[](i).nucleus()->asMacro();
367 if (!macroInset || macroInset->macroName().empty()
368 || macroInset->macroName()[0] == '^'
369 || macroInset->macroName()[0] == '_'
370 || (macroInset->name() == edited_name
371 && macroInset->displayMode() ==
372 MathMacro::DISPLAY_UNFOLDED))
376 macroInset->updateMacro(mc);
377 size_t macroNumArgs = 0;
378 size_t macroOptionals = 0;
379 MacroData const * macro = macroInset->macro();
381 macroNumArgs = macro->numargs();
382 macroOptionals = macro->optionals();
385 // store old and compute new display mode
386 MathMacro::DisplayMode newDisplayMode;
387 MathMacro::DisplayMode oldDisplayMode = macroInset->displayMode();
388 newDisplayMode = macroInset->computeDisplayMode();
390 // arity changed or other reason to detach?
391 if (oldDisplayMode == MathMacro::DISPLAY_NORMAL
392 && (macroInset->arity() != macroNumArgs
393 || macroInset->optionals() != macroOptionals
394 || newDisplayMode == MathMacro::DISPLAY_UNFOLDED))
395 detachMacroParameters(cur, i);
397 // the macro could have been copied while resizing this
398 macroInset = operator[](i).nucleus()->asMacro();
401 if (newDisplayMode != MathMacro::DISPLAY_UNFOLDED
402 && oldDisplayMode == MathMacro::DISPLAY_UNFOLDED) {
403 // put cursor in front of macro
405 int macroSlice = cur->find(macroInset);
406 if (macroSlice != -1)
407 cur->cutOff(macroSlice - 1);
411 // update the display mode
412 size_t appetite = macroInset->appetite();
413 macroInset->setDisplayMode(newDisplayMode);
416 if (newDisplayMode == MathMacro::DISPLAY_NORMAL
417 && (macroInset->arity() != macroNumArgs
418 || macroInset->optionals() != macroOptionals)) {
419 // is it a virgin macro which was never attached to parameters?
420 bool fromInitToNormalMode
421 = (oldDisplayMode == MathMacro::DISPLAY_INIT
422 || oldDisplayMode == MathMacro::DISPLAY_INTERACTIVE_INIT)
423 && newDisplayMode == MathMacro::DISPLAY_NORMAL;
425 // if the macro was entered interactively (i.e. not by paste or during
426 // loading), it should not be greedy, but the cursor should
427 // automatically jump into the macro when behind
428 bool interactive = (oldDisplayMode == MathMacro::DISPLAY_INTERACTIVE_INIT);
431 attachMacroParameters(cur, i, macroNumArgs, macroOptionals,
432 fromInitToNormalMode, interactive, appetite);
435 cur->updateInsets(&cur->bottom().inset());
438 // Give macro the chance to adapt to new situation.
439 // The macroInset could be invalid now because it was put into a script
440 // inset and therefore "deep" copied. So get it again from the MathData.
441 InsetMath * inset = operator[](i).nucleus();
442 if (inset->asScriptInset())
443 inset = inset->asScriptInset()->nuc()[0].nucleus();
444 LASSERT(inset->asMacro(), continue);
445 inset->asMacro()->updateRepresentation(cur, mc, utype);
450 void MathData::detachMacroParameters(DocIterator * cur, const size_type macroPos)
452 MathMacro * macroInset = operator[](macroPos).nucleus()->asMacro();
453 // We store this now, because the inset pointer will be invalidated in the scond loop below
454 size_t const optionals = macroInset->optionals();
456 // detach all arguments
457 vector<MathData> detachedArgs;
458 if (macroPos + 1 == size())
459 // strip arguments if we are at the MathData end
460 macroInset->detachArguments(detachedArgs, true);
462 macroInset->detachArguments(detachedArgs, false);
465 int curMacroSlice = -1;
467 curMacroSlice = cur->find(macroInset);
468 idx_type curMacroIdx = -1;
469 pos_type curMacroPos = -1;
470 vector<CursorSlice> argSlices;
471 if (curMacroSlice != -1) {
472 curMacroPos = (*cur)[curMacroSlice].pos();
473 curMacroIdx = (*cur)[curMacroSlice].idx();
474 cur->cutOff(curMacroSlice, argSlices);
478 // only [] after the last non-empty argument can be dropped later
479 size_t lastNonEmptyOptional = 0;
480 for (size_t l = 0; l < detachedArgs.size() && l < optionals; ++l) {
481 if (!detachedArgs[l].empty())
482 lastNonEmptyOptional = l;
485 // optional arguments to be put back?
486 pos_type p = macroPos + 1;
488 // We do not want to use macroInset below, the insert() call in
489 // the loop will invalidate it.
491 for (; j < detachedArgs.size() && j < optionals; ++j) {
492 // another non-empty parameter follows?
493 bool canDropEmptyOptional = j >= lastNonEmptyOptional;
495 // then we can drop empty optional parameters
496 if (detachedArgs[j].empty() && canDropEmptyOptional) {
497 if (curMacroIdx == j)
498 (*cur)[curMacroSlice - 1].pos() = macroPos + 1;
502 // Otherwise we don't drop an empty optional, put it back normally
504 asArray(from_ascii("[]"), optarg);
505 MathData & arg = detachedArgs[j];
507 // look for "]", i.e. put a brace around?
508 InsetMathBrace * brace = 0;
509 for (size_t q = 0; q < arg.size(); ++q) {
510 if (arg[q]->getChar() == ']') {
512 brace = new InsetMathBrace(buffer_);
517 // put arg between []
519 brace->cell(0) = arg;
520 optarg.insert(1, MathAtom(brace));
522 optarg.insert(1, arg);
524 // insert it into the array
529 if (curMacroSlice == -1)
532 // cursor in optional argument of macro?
533 if (curMacroIdx == j) {
535 cur->append(0, curMacroPos);
536 (*cur)[curMacroSlice - 1].pos() = macroPos + 2;
538 (*cur)[curMacroSlice - 1].pos() = macroPos + 2 + curMacroPos;
539 cur->append(argSlices);
540 } else if ((*cur)[curMacroSlice - 1].pos() >= int(p))
541 // cursor right of macro
542 (*cur)[curMacroSlice - 1].pos() += optarg.size();
545 // put them back into the MathData
546 for (; j < detachedArgs.size(); ++j, ++p) {
547 MathData const & arg = detachedArgs[j];
549 && !arg[0]->asScriptInset()
550 && !(arg[0]->asMacro() && arg[0]->asMacro()->arity() > 0))
553 insert(p, MathAtom(new InsetMathBrace(arg)));
556 if (curMacroSlice == -1)
559 // cursor in j-th argument of macro?
560 if (curMacroIdx == j) {
561 if (operator[](p).nucleus()->asBraceInset()) {
562 (*cur)[curMacroSlice - 1].pos() = p;
563 cur->append(0, curMacroPos);
564 cur->append(argSlices);
566 (*cur)[curMacroSlice - 1].pos() = p; // + macroPos;
567 cur->append(argSlices);
569 } else if ((*cur)[curMacroSlice - 1].pos() >= int(p))
570 ++(*cur)[curMacroSlice - 1].pos();
574 cur->updateInsets(&cur->bottom().inset());
578 void MathData::attachMacroParameters(Cursor * cur,
579 const size_type macroPos, const size_type macroNumArgs,
580 const int macroOptionals, const bool fromInitToNormalMode,
581 const bool interactiveInit, const size_t appetite)
583 MathMacro * macroInset = operator[](macroPos).nucleus()->asMacro();
585 // start at atom behind the macro again, maybe with some new arguments
586 // from the detach phase above, to add them back into the macro inset
587 size_t p = macroPos + 1;
588 vector<MathData> detachedArgs;
589 MathAtom scriptToPutAround;
591 // find cursor slice again of this MathData
594 thisSlice = cur->find(*this);
597 thisPos = (*cur)[thisSlice].pos();
599 // find arguments behind the macro
600 if (!interactiveInit) {
601 collectOptionalParameters(cur, macroOptionals, detachedArgs, p,
602 scriptToPutAround, macroPos, thisPos, thisSlice);
604 collectParameters(cur, macroNumArgs, detachedArgs, p,
605 scriptToPutAround, macroPos, thisPos, thisSlice, appetite);
607 // attach arguments back to macro inset
608 macroInset->attachArguments(detachedArgs, macroNumArgs, macroOptionals);
610 // found tail script? E.g. \foo{a}b^x
611 if (scriptToPutAround.nucleus()) {
612 InsetMathScript * scriptInset =
613 scriptToPutAround.nucleus()->asScriptInset();
614 // In the math parser we remove empty braces in the base
615 // of a script inset, but we have to restore them here.
616 if (scriptInset->nuc().empty()) {
618 scriptInset->nuc().push_back(
619 MathAtom(new InsetMathBrace(ar)));
621 // put macro into a script inset
622 scriptInset->nuc()[0] = operator[](macroPos);
623 operator[](macroPos) = scriptToPutAround;
625 // go into the script inset nucleus
626 if (cur && thisPos == int(macroPos))
629 // get pointer to "deep" copied macro inset
630 scriptInset = operator[](macroPos).nucleus()->asScriptInset();
631 macroInset = scriptInset->nuc()[0].nucleus()->asMacro();
634 // remove them from the MathData
635 erase(macroPos + 1, p);
637 // cursor outside this MathData?
641 // fix cursor if right of p
642 if (thisPos >= int(p))
643 (*cur)[thisSlice].pos() -= p - (macroPos + 1);
645 // was the macro inset just inserted interactively and was now folded
646 // and the cursor is just behind?
647 if ((*cur)[thisSlice].pos() == int(macroPos + 1)
649 && fromInitToNormalMode
650 && macroInset->arity() > 0
651 && thisSlice + 1 == int(cur->depth())) {
652 // then enter it if the cursor was just behind
653 (*cur)[thisSlice].pos() = macroPos;
654 cur->push_back(CursorSlice(*macroInset));
655 macroInset->idxFirst(*cur);
660 void MathData::collectOptionalParameters(Cursor * cur,
661 const size_type numOptionalParams, vector<MathData> & params,
662 size_t & pos, MathAtom & scriptToPutAround,
663 const pos_type macroPos, const int thisPos, const int thisSlice)
665 Buffer * buf = cur ? cur->buffer() : 0;
666 // insert optional arguments?
667 while (params.size() < numOptionalParams
669 && !scriptToPutAround.nucleus()) {
670 // is a [] block following which could be an optional parameter?
671 if (operator[](pos)->getChar() != '[')
674 // found possible optional argument, look for "]"
675 size_t right = pos + 1;
676 for (; right < size(); ++right) {
677 MathAtom & cell = operator[](right);
679 if (cell->getChar() == ']')
683 // maybe "]" with a script around?
684 InsetMathScript * script = cell.nucleus()->asScriptInset();
687 if (script->nuc().size() != 1)
689 if (script->nuc()[0]->getChar() == ']') {
690 // script will be put around the macro later
691 scriptToPutAround = cell;
697 if (right >= size()) {
698 // no ] found, so it's not an optional argument
702 // add everything between [ and ] as optional argument
703 MathData optarg(buf, begin() + pos + 1, begin() + right);
707 if (optarg.size() == 1 && optarg[0]->asBraceInset()) {
709 params.push_back(optarg[0]->asBraceInset()->cell(0));
711 params.push_back(optarg);
713 // place cursor in optional argument of macro
715 && thisPos >= int(pos) && thisPos <= int(right)) {
716 int paramPos = max(0, thisPos - int(pos) - 1);
717 vector<CursorSlice> x;
718 cur->cutOff(thisSlice, x);
719 (*cur)[thisSlice].pos() = macroPos;
721 paramPos = x[0].pos();
724 cur->append(0, paramPos);
730 // fill up empty optional parameters
731 while (params.size() < numOptionalParams)
732 params.push_back(MathData());
736 void MathData::collectParameters(Cursor * cur,
737 const size_type numParams, vector<MathData> & params,
738 size_t & pos, MathAtom & scriptToPutAround,
739 const pos_type macroPos, const int thisPos, const int thisSlice,
740 const size_t appetite)
742 size_t startSize = params.size();
744 // insert normal arguments
745 while (params.size() < numParams
746 && params.size() - startSize < appetite
748 && !scriptToPutAround.nucleus()) {
749 MathAtom & cell = operator[](pos);
752 vector<CursorSlice> argSlices;
754 if (thisSlice != -1 && thisPos == int(pos))
755 cur->cutOff(thisSlice, argSlices);
757 // which kind of parameter is it? In {}? With index x^n?
758 InsetMathBrace const * brace = cell->asBraceInset();
760 // found brace, convert into argument
761 params.push_back(brace->cell(0));
763 // cursor inside of the brace or just in front of?
764 if (thisPos == int(pos) && !argSlices.empty()) {
765 argPos = argSlices[0].pos();
766 argSlices.erase(argSlices.begin());
768 } else if (cell->asScriptInset() && params.size() + 1 == numParams) {
769 // last inset with scripts without braces
770 // -> they belong to the macro, not the argument
771 InsetMathScript * script = cell.nucleus()->asScriptInset();
772 if (script->nuc().size() == 1 && script->nuc()[0]->asBraceInset())
773 // nucleus in brace? Unpack!
774 params.push_back(script->nuc()[0]->asBraceInset()->cell(0));
776 params.push_back(script->nuc());
778 // script will be put around below
779 scriptToPutAround = cell;
781 // this should only happen after loading, so make cursor handling simple
782 if (thisPos >= int(macroPos) && thisPos <= int(macroPos + numParams)) {
788 // the simplest case: plain inset
790 array.insert(0, cell);
791 params.push_back(array);
794 // put cursor in argument again
795 if (thisSlice != - 1 && thisPos == int(pos)) {
796 cur->append(params.size() - 1, argPos);
797 cur->append(argSlices);
798 (*cur)[thisSlice].pos() = macroPos;
806 int MathData::pos2x(BufferView const * bv, size_type pos) const
809 size_type target = min(pos, size());
810 CoordCache::Insets const & coords = bv->coordCache().getInsets();
811 for (size_type i = 0; i < target; ++i) {
812 const_iterator it = begin() + i;
813 //lyxerr << "char: " << (*it)->getChar()
814 // << "width: " << (*it)->width() << endl;
815 x += coords.dim((*it).nucleus()).wid;
821 MathData::size_type MathData::x2pos(BufferView const * bv, int targetx) const
823 const_iterator it = begin();
826 CoordCache::Insets const & coords = bv->coordCache().getInsets();
827 // find first position after targetx
828 for (; currx < targetx && it != end(); ++it) {
830 currx += coords.dim((*it).nucleus()).wid;
834 * If we are not at the beginning of the array, go to the left
835 * of the inset if one of the following two condition holds:
836 * - the current inset is editable (so that the cursor tip is
837 * deeper than us): in this case, we want all intermediate
838 * cursor slices to be before insets;
839 * - the mouse is closer to the left side of the inset than to
841 * See bug 1918 for details.
843 if (it != begin() && currx >= targetx
844 && ((*prev(it, 1))->asNestInset()
845 || abs(lastx - targetx) < abs(currx - targetx))) {
853 int MathData::dist(BufferView const & bv, int x, int y) const
855 return bv.coordCache().getArrays().squareDistance(this, x, y);
859 void MathData::setXY(BufferView & bv, int x, int y) const
861 //lyxerr << "setting position cache for MathData " << this << endl;
862 bv.coordCache().arrays().add(this, x, y);
866 Dimension const & MathData::dimension(BufferView const & bv) const
868 return bv.coordCache().getArrays().dim(this);
872 int MathData::xm(BufferView const & bv) const
874 Geometry const & g = bv.coordCache().getArrays().geometry(this);
876 return g.pos.x_ + g.dim.wid / 2;
880 int MathData::ym(BufferView const & bv) const
882 Geometry const & g = bv.coordCache().getArrays().geometry(this);
884 return g.pos.y_ + (g.dim.des - g.dim.asc) / 2;
888 int MathData::xo(BufferView const & bv) const
890 return bv.coordCache().getArrays().x(this);
894 int MathData::yo(BufferView const & bv) const
896 return bv.coordCache().getArrays().y(this);
900 ostream & operator<<(ostream & os, MathData const & ar)
902 odocstringstream oss;
903 NormalStream ns(oss);
905 return os << to_utf8(oss.str());
909 odocstream & operator<<(odocstream & os, MathData const & ar)