]> git.lyx.org Git - lyx.git/blobdiff - src/mathed/InsetMathHull.cpp
g-brief loads babel internally. So don't load it ourselves.
[lyx.git] / src / mathed / InsetMathHull.cpp
index cb6cec53fb09dfd8413f6c6597ef20b8396790d3..94d293870d6911365b13c9395d798e864df1306a 100644 (file)
@@ -11,7 +11,6 @@
 #include <config.h>
 
 #include "InsetMathHull.h"
-
 #include "InsetMathChar.h"
 #include "InsetMathColor.h"
 #include "InsetMathFrac.h"
@@ -26,6 +25,7 @@
 #include "BufferParams.h"
 #include "BufferView.h"
 #include "ColorSet.h"
+#include "Cursor.h"
 #include "CutAndPaste.h"
 #include "Encoding.h"
 #include "Exporter.h"
@@ -38,7 +38,6 @@
 #include "InsetMathMacro.h"
 #include "InsetMathMacroTemplate.h"
 #include "MetricsInfo.h"
-#include "xml.h"
 #include "Paragraph.h"
 #include "ParIterator.h"
 #include "xml.h"
@@ -51,7 +50,6 @@
 #include "insets/InsetRef.h"
 #include "insets/RenderPreview.h"
 
-#include "graphics/GraphicsImage.h"
 #include "graphics/PreviewImage.h"
 #include "graphics/PreviewLoader.h"
 
@@ -65,7 +63,7 @@
 #include "support/filetools.h"
 #include "support/lassert.h"
 #include "support/lstrings.h"
-#include "support/RefChanger.h"
+#include "support/Changer.h"
 
 #include <sstream>
 
@@ -122,77 +120,35 @@ namespace {
 
 
        // writes a preamble for underlined or struck out math display
-       void writeMathdisplayPreamble(WriteStream & os)
+       void writeMathdisplayPreamble(TeXMathStream & os)
        {
                if (os.strikeoutMath())
                        return;
 
-               if (os.ulemCmd() == WriteStream::UNDERLINE)
+               if (os.ulemCmd() == TeXMathStream::UNDERLINE)
                        os << "\\raisebox{-\\belowdisplayshortskip}{"
                              "\\parbox[b]{\\linewidth}{";
-               else if (os.ulemCmd() == WriteStream::STRIKEOUT)
+               else if (os.ulemCmd() == TeXMathStream::STRIKEOUT)
                        os << "\\parbox{\\linewidth}{";
        }
 
 
        // writes a postamble for underlined or struck out math display
-       void writeMathdisplayPostamble(WriteStream & os)
+       void writeMathdisplayPostamble(TeXMathStream & os)
        {
                if (os.strikeoutMath())
                        return;
 
-               if (os.ulemCmd() == WriteStream::UNDERLINE)
+               if (os.ulemCmd() == TeXMathStream::UNDERLINE)
                        os << "}}\\\\\n";
-               else if (os.ulemCmd() == WriteStream::STRIKEOUT)
+               else if (os.ulemCmd() == TeXMathStream::STRIKEOUT)
                        os << "}\\\\\n";
        }
 
-
 } // namespace
 
 
-HullType hullType(docstring const & s)
-{
-       if (s == "none")      return hullNone;
-       if (s == "simple")    return hullSimple;
-       if (s == "equation")  return hullEquation;
-       if (s == "eqnarray")  return hullEqnArray;
-       if (s == "align")     return hullAlign;
-       if (s == "alignat")   return hullAlignAt;
-       if (s == "xalignat")  return hullXAlignAt;
-       if (s == "xxalignat") return hullXXAlignAt;
-       if (s == "multline")  return hullMultline;
-       if (s == "gather")    return hullGather;
-       if (s == "flalign")   return hullFlAlign;
-       if (s == "regexp")    return hullRegexp;
-       lyxerr << "unknown hull type '" << to_utf8(s) << "'" << endl;
-       return hullUnknown;
-}
-
-
-docstring hullName(HullType type)
-{
-       switch (type) {
-       case hullNone:       return from_ascii("none");
-       case hullSimple:     return from_ascii("simple");
-       case hullEquation:   return from_ascii("equation");
-       case hullEqnArray:   return from_ascii("eqnarray");
-       case hullAlign:      return from_ascii("align");
-       case hullAlignAt:    return from_ascii("alignat");
-       case hullXAlignAt:   return from_ascii("xalignat");
-       case hullXXAlignAt:  return from_ascii("xxalignat");
-       case hullMultline:   return from_ascii("multline");
-       case hullGather:     return from_ascii("gather");
-       case hullFlAlign:    return from_ascii("flalign");
-       case hullRegexp:     return from_ascii("regexp");
-       case hullUnknown:
-               lyxerr << "unknown hull type" << endl;
-               break;
-       }
-       return from_ascii("none");
-}
-
-static InsetLabel * dummy_pointer = 0;
+static InsetLabel * dummy_pointer = nullptr;
 
 InsetMathHull::InsetMathHull(Buffer * buf)
        : InsetMathGrid(buf, 1, 1), type_(hullNone), numbered_(1, NONUMBER),
@@ -228,8 +184,8 @@ InsetMathHull::InsetMathHull(InsetMathHull const & other) : InsetMathGrid(other)
 
 InsetMathHull::~InsetMathHull()
 {
-       for (size_t i = 0; i < label_.size(); ++i)
-               delete label_[i];
+       for (auto & i : label_)
+               delete i;
 }
 
 
@@ -248,8 +204,8 @@ InsetMathHull & InsetMathHull::operator=(InsetMathHull const & other)
        numbered_ = other.numbered_;
        numbers_ = other.numbers_;
        buffer_ = other.buffer_;
-       for (size_t i = 0; i < label_.size(); ++i)
-               delete label_[i];
+       for (auto & i : label_)
+               delete i;
        label_ = other.label_;
        for (size_t i = 0; i != label_.size(); ++i) {
                if (label_[i])
@@ -272,14 +228,6 @@ void InsetMathHull::setBuffer(Buffer & buffer)
 }
 
 
-// FIXME This should really be controlled by the TOC level, or
-// something of the sort.
-namespace {
-       const char * counters_to_save[] = {"section", "chapter"};
-       unsigned int const numcnts = sizeof(counters_to_save)/sizeof(char *);
-} // namespace
-
-
 void InsetMathHull::updateBuffer(ParIterator const & it, UpdateType utype, bool const deleted)
 {
        if (!buffer_) {
@@ -297,21 +245,11 @@ void InsetMathHull::updateBuffer(ParIterator const & it, UpdateType utype, bool
                Counters & cnts =
                        buffer_->masterBuffer()->params().documentClass().counters();
 
-               // right now, we only need to do this at export time
-               if (utype == OutputUpdate) {
-                       for (size_t i = 0; i < numcnts; ++i) {
-                               docstring const cnt = from_ascii(counters_to_save[i]);
-                               if (cnts.hasCounter(cnt))
-                                       counter_map[cnt] = cnts.value(cnt);
-                       }
-               }
-
                // this has to be done separately
                docstring const eqstr = from_ascii("equation");
                if (cnts.hasCounter(eqstr)) {
-                       if (utype == OutputUpdate)
-                               counter_map[eqstr] = cnts.value(eqstr);
                        for (size_t i = 0; i != label_.size(); ++i) {
+                               docstring const oldnumber = numbers_[i];
                                if (numbered(i)) {
                                        Paragraph const & par = it.paragraph();
                                        if (!par.isDeleted(it.pos())) {
@@ -321,6 +259,12 @@ void InsetMathHull::updateBuffer(ParIterator const & it, UpdateType utype, bool
                                                numbers_[i] = from_ascii("#");
                                } else
                                        numbers_[i] = empty_docstring();
+                               // If the numbering has changed, trigger a new preview
+                               if (oldnumber != numbers_[i] && RenderPreview::previewMath()) {
+                                       // Do we need to remove it first?
+                                       //preview_->removePreview(*buffer_);
+                                       preparePreview(it);
+                               }
                        }
                }
        }
@@ -330,6 +274,32 @@ void InsetMathHull::updateBuffer(ParIterator const & it, UpdateType utype, bool
                if (label_[i])
                        label_[i]->updateBuffer(it, utype, deleted);
        }
+        // set up equation numbers
+
+       // compute first and last item
+       row_type first = nrows();
+       for (row_type row = 0; row != nrows(); ++row)
+               if (numbered(row)) {
+                       first = row;
+                       break;
+               }
+       if (first != nrows()) {
+               row_type last = nrows() - 1;
+               for (; last != 0; --last)
+                       if (numbered(last))
+                               break;
+
+               for (row_type row = 0; row != nrows(); ++row) {
+                       if (!numbered(row))
+                               continue;
+                       if (label_[row]) {
+                               label_[row]->setCounterValue(numbers_[row]);
+                               label_[row]->setPrettyCounter("(" + numbers_[row] + ")");
+                               label_[row]->setFormattedCounter("(" + numbers_[row] + ")");
+                       }
+               }
+       }
+
        // pass down
        InsetMathGrid::updateBuffer(it, utype, deleted);
 }
@@ -345,7 +315,6 @@ void InsetMathHull::addToToc(DocIterator const & pit, bool output_active,
                return;
        }
 
-       TocBuilder & b = backend.builder("equation");
        // compute first and last item
        row_type first = nrows();
        for (row_type row = 0; row != nrows(); ++row)
@@ -359,24 +328,47 @@ void InsetMathHull::addToToc(DocIterator const & pit, bool output_active,
        row_type last = nrows() - 1;
        for (; last != 0; --last)
                if (numbered(last))
-                       break;
-       // add equation numbers
-       b.pushItem(pit, docstring(), output_active);
+            break;
+
+       TocBuilder & b = backend.builder("equation");
+        b.pushItem(pit, docstring(), output_active);
        if (first != last)
                b.argumentItem(bformat(from_ascii("(%1$s-%2$s)"),
                                       numbers_[first], numbers_[last]));
+
+       odocstringstream ods;
+       Encoding const * enc = encodings.fromLyXName("utf8");
+       OutputParams ops(enc);
+       ops.for_toc = true;
+       int const max_length = 30;
+
        for (row_type row = 0; row != nrows(); ++row) {
                if (!numbered(row))
                        continue;
-               if (label_[row])
+               if (label_[row]) {
                        label_[row]->addToToc(pit, output_active, utype, backend);
+               }
                docstring label = nicelabel(row);
-               if (first == last)
+               if (first == last) {
                        // this is the only equation
-                       b.argumentItem(label);
-               else {
+                       plaintext(ods, ops, max_length);
+                       b.argumentItem(label + " " + ods.str());
+               } else {
                        // insert as sub-items
-                       b.pushItem(pit, label, output_active);
+                       otexrowstream ots(ods);
+                       TeXMathStream wi(ots, false, false, TeXMathStream::wsDefault, enc);
+                       docstring d;
+                       for (col_type c = 0; c < ncols(); ++c) {
+                               wi << cell(index(row, c));
+                               d = ods.str();
+                               if (d.size() > max_length) {
+                                       d = d.substr(0, max_length - 1);
+                                       break;
+                               }
+                       }
+                       b.pushItem(pit, label+ " " + d, output_active);
+                       // clear the stringstream
+                       odocstringstream().swap(ods);
                        b.pop();
                }
        }
@@ -523,17 +515,17 @@ void InsetMathHull::metrics(MetricsInfo & mi, Dimension & dim) const
 {
        /* Compute \(above|below)displayskip
           true value in LaTeX is 10pt plus 2pt minus 5pt (in normal size at 10pt)
-          FIXME: make this dependent of current size? (minor improvement)
-          FIXME: if would be nice if this was not part of the inset, but
-                 just increased the row ascent/descent.
-          FIXME: even better would be to handle the short skip case.
+          But we use a fixed number of pixels and scale them with zoom.
        */
-       int const bottom_display_margin = mi.base.inPixels(Length(10, Length::PT));
+       int const bottom_display_margin = mi.base.bv->zoomedPixels(6);
        int top_display_margin = bottom_display_margin;
        // at start of paragraph, add an empty line
        if (mi.vmode)
                top_display_margin += theFontMetrics(mi.base.font).maxHeight() + 2;
 
+       int const ind = indent(*mi.base.bv);
+       mi.extrawidth = ind;
+
        if (previewState(mi.base.bv)) {
                preview_->metrics(mi, dim);
                if (previewTooSmall(dim)) {
@@ -565,14 +557,14 @@ void InsetMathHull::metrics(MetricsInfo & mi, Dimension & dim) const
        if (numberedType()) {
                BufferParams::MathNumber const math_number = buffer().params().getMathNumber();
                int extra_offset = 0;
+               int max_nlwid = 0;
                for (row_type row = 0; row < nrows(); ++row) {
                        rowinfo(row).offset[mi.base.bv] += extra_offset;
-                       if (!numbered(row))
-                               continue;
                        docstring const nl = nicelabel(row);
+                       if (nl.empty())
+                               continue;
                        Dimension dimnl;
                        mathed_string_dim(mi.base.font, nl, dimnl);
-                       int const ind = indent(*mi.base.bv);
                        int const x = ind ? ind : (mi.base.textwidth - dim.wid) / 2;
                        // for some reason metrics does not trigger at the
                        // same point as draw, and therefore we use >= instead of >
@@ -580,8 +572,10 @@ void InsetMathHull::metrics(MetricsInfo & mi, Dimension & dim) const
                            || (math_number == BufferParams::RIGHT
                                && dimnl.wid >= mi.base.textwidth - x - dim.wid)) {
                                extra_offset += dimnl.height();
-                       }
+                       } else if (dimnl.wid > max_nlwid)
+                               max_nlwid = dimnl.wid;
                }
+               mi.extrawidth += max_nlwid;
                dim.des += extra_offset;
        }
 
@@ -636,13 +630,9 @@ void InsetMathHull::drawBackground(PainterInfo & pi, int x, int y) const
                    dim.wid, dim.asc + dim.des, backgroundColor(pi));
                return;
        }
-       // If there are numbers, the margins around the (displayed)
-       // equation have to be cleared.
-       if (numberedType())
-               pi.pain.fillRectangle(pi.leftx, y - dim.asc,
-                               pi.rightx - pi.leftx, dim.height(), pi.background_color);
+
        pi.pain.fillRectangle(x + 1, y - dim.asc + 1, dim.wid - 2,
-                       dim.asc + dim.des - 1, pi.backgroundColor(this));
+                             dim.height() - 1, pi.backgroundColor(this));
 }
 
 
@@ -658,8 +648,8 @@ void InsetMathHull::draw(PainterInfo & pi, int x, int y) const
        if (previewState(bv)) {
                // Do not draw change tracking cue if taken care of by RowPainter
                // already.
-               Changer dummy = !canPaintChange(*bv) ? make_change(pi.change, Change())
-                       : Changer();
+               Changer dummy = !canPaintChange(*bv) ? changeVar(pi.change, Change())
+                       : noChange();
                if (previewTooSmall(dim)) {
                        // we have an extra frame
                        preview_->draw(pi, x + ERROR_FRAME_WIDTH, y);
@@ -673,11 +663,6 @@ void InsetMathHull::draw(PainterInfo & pi, int x, int y) const
        }
 
        // First draw the numbers
-       ColorCode color = pi.selected && lyxrc.use_system_colors
-                               ? Color_selectiontext : standardColor();
-       bool const really_change_color = pi.base.font.color() == Color_none;
-       Changer dummy0 = really_change_color ? pi.base.font.changeColor(color)
-               : Changer();
        if (numberedType()) {
                BufferParams::MathNumber const math_number = buffer().params().getMathNumber();
                for (row_type row = 0; row < nrows(); ++row) {
@@ -686,18 +671,36 @@ void InsetMathHull::draw(PainterInfo & pi, int x, int y) const
                        Dimension dimnl;
                        mathed_string_dim(pi.base.font, nl, dimnl);
                        if (math_number == BufferParams::LEFT) {
+                               ColorCode const col = pi.selected_left
+                                       ? Color_selectiontext
+                                       : pi.base.font.color();
+                               Changer dummy0 = pi.base.font.changeColor(col);
                                if (dimnl.wid > x - pi.leftx)
                                        yy += rowinfo(row).descent + dimnl.asc;
+                               pi.pain.fillRectangle(pi.leftx, yy - dimnl.asc,
+                                       dimnl.width(), dimnl.height(),
+                                       pi.selected_left ? Color_selection : pi.background_color);
                                pi.draw(pi.leftx, yy, nl);
                        } else {
+                               ColorCode const col = pi.selected_right
+                                       ? Color_selectiontext
+                                       : pi.base.font.color();
+                               Changer dummy0 = pi.base.font.changeColor(col);
                                if (dimnl.wid > pi.rightx - x - dim.wid)
                                        yy += rowinfo(row).descent + dimnl.asc;
+                               pi.pain.fillRectangle(pi.rightx - dimnl.wid, yy - dimnl.asc,
+                                       dimnl.width(), dimnl.height(),
+                                       pi.selected_right ? Color_selection : pi.background_color);
                                pi.draw(pi.rightx - dimnl.wid, yy, nl);
                        }
                }
        }
 
        // Then the equations
+       ColorCode color = pi.selected ? Color_selectionmath : standardColor();
+       bool const really_change_color = pi.base.font.color() == Color_none;
+       Changer dummy0 = really_change_color ? pi.base.font.changeColor(color)
+               : noChange();
        Changer dummy1 = pi.base.changeFontSet(standardFont());
        Changer dummy2 = pi.base.font.changeStyle(display() ? DISPLAY_STYLE
                                                            : TEXT_STYLE);
@@ -721,7 +724,7 @@ void InsetMathHull::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
        } else {
                odocstringstream os;
                otexrowstream ots(os);
-               WriteStream wi(ots, false, true, WriteStream::wsDefault);
+               TeXMathStream wi(ots, false, true, TeXMathStream::wsDefault);
                write(wi);
                dim.wid = os.str().size();
                dim.asc = 1;
@@ -737,7 +740,7 @@ void InsetMathHull::drawT(TextPainter & pain, int x, int y) const
        } else {
                odocstringstream os;
                otexrowstream ots(os);
-               WriteStream wi(ots, false, true, WriteStream::wsDefault);
+               TeXMathStream wi(ots, false, true, TeXMathStream::wsDefault);
                write(wi);
                pain.draw(x, y, os.str().c_str());
        }
@@ -752,11 +755,11 @@ static docstring latexString(InsetMathHull const & inset)
        // \newcommand{\xxx}{\text{$\phi$}}) gets processed twice. The
        // first time as a whole, and the second time only the inner math.
        // In this last case inset.buffer() would be invalid.
-       static Encoding const * encoding = 0;
+       static Encoding const * encoding = nullptr;
        if (inset.isBufferValid())
                encoding = &(inset.buffer().params().encoding());
        otexrowstream ots(ls);
-       WriteStream wi(ots, false, true, WriteStream::wsPreview, encoding);
+       TeXMathStream wi(ots, false, true, TeXMathStream::wsPreview, encoding);
        inset.write(wi);
        return ls.str();
 }
@@ -874,29 +877,7 @@ void InsetMathHull::preparePreview(DocIterator const & pos,
        if (lsize != "normalsize" && !prefixIs(lsize, "error"))
                setfont += from_ascii("\\" + lsize + '\n');
 
-       docstring setcnt;
-       if (forexport && haveNumbers()) {
-               docstring eqstr = from_ascii("equation");
-               CounterMap::const_iterator it = counter_map.find(eqstr);
-               if (it != counter_map.end()) {
-                       int num = it->second;
-                       if (num >= 0)
-                               setcnt += from_ascii("\\setcounter{") + eqstr + '}' +
-                                         '{' + convert<docstring>(num) + '}' + '\n';
-               }
-               for (size_t i = 0; i != numcnts; ++i) {
-                       docstring cnt = from_ascii(counters_to_save[i]);
-                       it = counter_map.find(cnt);
-                       if (it == counter_map.end())
-                                       continue;
-                       int num = it->second;
-                       if (num > 0)
-                               setcnt += from_ascii("\\setcounter{") + cnt + '}' +
-                                         '{' + convert<docstring>(num) + '}';
-               }
-       }
-       docstring const snippet = macro_preamble + setfont + setcnt
-                                 + latexString(*this) + endfont;
+       docstring const snippet = macro_preamble + setfont + latexString(*this) + endfont;
        LYXERR(Debug::MACROS, "Preview snippet: " << snippet);
        preview_->addPreview(snippet, *buffer, forexport);
 }
@@ -962,10 +943,6 @@ void InsetMathHull::label(row_type row, docstring const & label)
 void InsetMathHull::numbered(row_type row, Numbered num)
 {
        numbered_[row] = num;
-       if (!numbered(row) && label_[row]) {
-               delete label_[row];
-               label_[row] = 0;
-       }
 }
 
 
@@ -995,8 +972,8 @@ bool InsetMathHull::ams() const
        case hullEqnArray:
                break;
        }
-       for (size_t row = 0; row < numbered_.size(); ++row)
-               if (numbered_[row] == NOTAG)
+       for (auto const & row : numbered_)
+               if (row == NOTAG)
                        return true;
        return false;
 }
@@ -1025,7 +1002,7 @@ bool InsetMathHull::outerDisplay() const
 }
 
 
-Inset::RowFlags InsetMathHull::rowFlags() const
+int InsetMathHull::rowFlags() const
 {
        switch (type_) {
        case hullUnknown:
@@ -1134,9 +1111,9 @@ void InsetMathHull::validate(LaTeXFeatures & features) const
 }
 
 
-OutputParams::CtObject InsetMathHull::CtObject(OutputParams const & runparams) const
+CtObject InsetMathHull::getCtObject(OutputParams const & runparams) const
 {
-       OutputParams::CtObject res = OutputParams::CT_NORMAL;
+       CtObject res = CtObject::Normal;
        switch(type_) {
        case hullNone:
        case hullSimple:
@@ -1155,9 +1132,9 @@ OutputParams::CtObject InsetMathHull::CtObject(OutputParams const & runparams) c
        case hullMultline: {
                if (runparams.inulemcmd
                    && (!runparams.local_font || runparams.local_font->fontInfo().strikeout() != FONT_ON))
-                       res = OutputParams::CT_UDISPLAYOBJECT;
+                       res = CtObject::UDisplayObject;
                else
-                       res = OutputParams::CT_DISPLAYOBJECT;
+                       res = CtObject::DisplayObject;
                break;
                }
        }
@@ -1165,7 +1142,7 @@ OutputParams::CtObject InsetMathHull::CtObject(OutputParams const & runparams) c
 }
 
 
-void InsetMathHull::header_write(WriteStream & os) const
+void InsetMathHull::header_write(TeXMathStream & os) const
 {
        bool n = numberedType();
 
@@ -1231,7 +1208,7 @@ void InsetMathHull::header_write(WriteStream & os) const
 }
 
 
-void InsetMathHull::footer_write(WriteStream & os) const
+void InsetMathHull::footer_write(TeXMathStream & os) const
 {
        bool n = numberedType();
 
@@ -1414,8 +1391,11 @@ void InsetMathHull::delCol(col_type col)
 
 docstring InsetMathHull::nicelabel(row_type row) const
 {
-       if (!numbered(row))
-               return docstring();
+       if (!numbered(row)) {
+               if (!label_[row])
+                       return docstring();
+               return '[' + label_[row]->screenLabel() + ']';
+       }
        docstring const & val = numbers_[row];
        if (!label_[row])
                return '(' + val + ')';
@@ -1428,7 +1408,7 @@ void InsetMathHull::glueall(HullType type)
        MathData ar;
        for (idx_type i = 0; i < nargs(); ++i)
                ar.append(cell(i));
-       InsetLabel * label = 0;
+       InsetLabel * label = nullptr;
        if (type == hullEquation) {
                // preserve first non-empty label
                for (row_type row = 0; row < nrows(); ++row) {
@@ -1579,7 +1559,7 @@ void InsetMathHull::mutate(HullType newtype)
                        numbered(0, false);
                } else {
                        setType(hullEquation);
-                       numbered(0, label_[0] ? true : false);
+                       numbered(0, label_[0] != nullptr);
                        mutate(newtype);
                }
                break;
@@ -1718,30 +1698,39 @@ void InsetMathHull::mutate(HullType newtype)
 }
 
 
-docstring InsetMathHull::eolString(row_type row, bool fragile, bool latex,
-               bool last_eoln) const
+void InsetMathHull::eol(TeXMathStream & os, row_type row, bool fragile, bool latex,
+                        bool last_eoln) const
 {
-       docstring res;
        if (numberedType()) {
-               if (label_[row] && numbered(row)) {
-                       docstring const name =
-                               latex ? escape(label_[row]->getParam("name"))
-                                     : label_[row]->getParam("name");
-                       res += "\\label{" + name + '}';
+               bool const for_preview =
+                       (os.output() == TeXMathStream::wsPreview);
+               if (label_[row]) {
+                       // Use utf8 strings for previewed labels when possible
+                       bool use_utf8 = for_preview &&
+                               (buffer().params().useNonTeXFonts ||
+                                buffer().params().encoding().package() == Encoding::japanese);
+                       docstring const name = (latex && !use_utf8)
+                               ? escape(label_[row]->getParam("name"))
+                               : label_[row]->getParam("name");
+                       os << "\\label{" + name + '}';
                }
                if (type_ != hullMultline) {
                        if (numbered_[row]  == NONUMBER)
-                               res += "\\nonumber ";
+                               os << "\\nonumber ";
                        else if (numbered_[row]  == NOTAG)
-                               res += "\\notag ";
+                               os<< "\\notag ";
+               }
+               if (for_preview && !numbers_[row].empty()) {
+                       os << "\\global\\def\\theequation{" << numbers_[row] << "}\n";
                }
+
        }
        // Never add \\ on the last empty line of eqnarray and friends
        last_eoln = false;
-       return res + InsetMathGrid::eolString(row, fragile, latex, last_eoln);
+       InsetMathGrid::eol(os, row, fragile, latex, last_eoln);
 }
 
-void InsetMathHull::write(WriteStream & os) const
+void InsetMathHull::write(TeXMathStream & os) const
 {
        ModeSpecifier specifier(os, MATH_MODE);
        header_write(os);
@@ -1894,11 +1883,22 @@ void InsetMathHull::doDispatch(Cursor & cur, FuncRequest & cmd)
                //lyxerr << "toggling all numbers" << endl;
                cur.recordUndoInset();
                bool old = numberedType();
-               if (type_ == hullMultline)
-                       numbered(nrows() - 1, !old);
-               else
-                       for (row_type row = 0; row < nrows(); ++row)
+               if (type_ == hullMultline) {
+                       row_type row = nrows() - 1;
+                       numbered(row, !old);
+                       if (old && label_[row]) {
+                               delete label_[row];
+                               label_[row] = 0;
+                       }
+               } else {
+                       for (row_type row = 0; row < nrows(); ++row) {
                                numbered(row, !old);
+                               if (old && label_[row]) {
+                                       delete label_[row];
+                                       label_[row] = 0;
+                               }
+                       }
+               }
 
                cur.message(old ? _("No number") : _("Number"));
                cur.forceBufferUpdate();
@@ -1911,6 +1911,10 @@ void InsetMathHull::doDispatch(Cursor & cur, FuncRequest & cmd)
                bool old = numbered(r);
                cur.message(old ? _("No number") : _("Number"));
                numbered(r, !old);
+               if (old && label_[r]) {
+                       delete label_[r];
+                       label_[r] = 0;
+               }
                cur.forceBufferUpdate();
                break;
        }
@@ -1945,7 +1949,7 @@ void InsetMathHull::doDispatch(Cursor & cur, FuncRequest & cmd)
                        // if there is an argument, find the corresponding label, else
                        // check whether there is at least one label.
                        for (row = 0; row != nrows(); ++row)
-                               if (numbered(row) && label_[row]
+                               if (label_[row]
                                          && (cmd.argument().empty() || label(row) == cmd.argument()))
                                        break;
                }
@@ -2148,12 +2152,12 @@ bool InsetMathHull::getStatus(Cursor & cur, FuncRequest const & cmd,
                        // if there is no argument and we're inside math, we retrieve
                        // the row number from the cursor position.
                        row_type row = (type_ == hullMultline) ? nrows() - 1 : cur.row();
-                       enabled = numberedType() && label_[row] && numbered(row);
+                       enabled = numberedType() && label_[row];
                } else {
                        // if there is an argument, find the corresponding label, else
                        // check whether there is at least one label.
                        for (row_type row = 0; row != nrows(); ++row) {
-                               if (numbered(row) && label_[row] &&
+                               if (label_[row] &&
                                        (cmd.argument().empty() || label(row) == cmd.argument())) {
                                                enabled = true;
                                                break;
@@ -2239,28 +2243,6 @@ int InsetMathHull::border() const
 
 
 
-// simply scrap this function if you want
-void InsetMathHull::mutateToText()
-{
-#if 0
-       // translate to latex
-       ostringstream os;
-       latex(os, false, false);
-       string str = os.str();
-
-       // insert this text
-       Text * lt = view_->cursor().innerText();
-       string::const_iterator cit = str.begin();
-       string::const_iterator end = str.end();
-       for (; cit != end; ++cit)
-               view_->getIntl()->getTransManager().TranslateAndInsert(*cit, lt);
-
-       // remove ourselves
-       //dispatch(LFUN_ESCAPE);
-#endif
-}
-
-
 void InsetMathHull::handleFont(Cursor & cur, docstring const & arg,
        docstring const & font)
 {
@@ -2291,7 +2273,10 @@ void InsetMathHull::handleFont2(Cursor & cur, docstring const & arg)
 
 void InsetMathHull::edit(Cursor & cur, bool front, EntryDirection entry_from)
 {
-       InsetMathNest::edit(cur, front, entry_from);
+       cur.push(*this);
+       bool enter_front = (entry_from == Inset::ENTRY_DIRECTION_LEFT ||
+               (entry_from == Inset::ENTRY_DIRECTION_IGNORE && front));
+       enter_front ? idxFirst(cur) : idxLast(cur);
        // The inset formula dimension is not necessarily the same as the
        // one of the instant preview image, so we have to indicate to the
        // BufferView that a metrics update is needed.
@@ -2302,52 +2287,11 @@ void InsetMathHull::edit(Cursor & cur, bool front, EntryDirection entry_from)
 /////////////////////////////////////////////////////////////////////
 
 
-#if 0
-bool InsetMathHull::searchForward(BufferView * bv, string const & str,
-                                    bool, bool)
-{
-       // FIXME: completely broken
-       static InsetMathHull * lastformula = 0;
-       static CursorBase current = DocIterator(ibegin(nucleus()));
-       static MathData ar;
-       static string laststr;
-
-       if (lastformula != this || laststr != str) {
-               //lyxerr << "reset lastformula to " << this << endl;
-               lastformula = this;
-               laststr = str;
-               current = ibegin(nucleus());
-               ar.clear();
-               mathed_parse_cell(ar, str, Parse::NORMAL, &buffer());
-       } else {
-               increment(current);
-       }
-       //lyxerr << "searching '" << str << "' in " << this << ar << endl;
-
-       for (DocIterator it = current; it != iend(nucleus()); increment(it)) {
-               CursorSlice & top = it.back();
-               MathData const & a = top.asInsetMath()->cell(top.idx_);
-               if (a.matchpart(ar, top.pos_)) {
-                       bv->cursor().setSelection(it, ar.size());
-                       current = it;
-                       top.pos_ += ar.size();
-                       bv->update();
-                       return true;
-               }
-       }
-
-       //lyxerr << "not found!" << endl;
-       lastformula = 0;
-       return false;
-}
-#endif
-
-
 void InsetMathHull::write(ostream & os) const
 {
        odocstringstream oss;
        otexrowstream ots(oss);
-       WriteStream wi(ots, false, false, WriteStream::wsDefault);
+       TeXMathStream wi(ots, false, false, TeXMathStream::wsDefault);
        oss << "Formula ";
        write(wi);
        os << to_utf8(oss.str());
@@ -2391,12 +2335,19 @@ int InsetMathHull::plaintext(odocstringstream & os,
        odocstringstream oss;
        otexrowstream ots(oss);
        Encoding const * const enc = encodings.fromLyXName("utf8");
-       WriteStream wi(ots, false, true, WriteStream::wsDefault, enc);
 
+       TeXMathStream::OutputType ot;
+       if (op.find_effective())
+               ot = TeXMathStream::wsSearchAdv;
+       else
+               ot = TeXMathStream::wsDefault;
        // Fix Bug #6139
-       if (type_ == hullRegexp)
+       if (type_ == hullRegexp) {
+               TeXMathStream wi(ots, false, true, ot, enc);
                write(wi);
+       }
        else {
+               TeXMathStream wi(ots, false, true, ot, enc);
                for (row_type r = 0; r < nrows(); ++r) {
                        for (col_type c = 0; c < ncols(); ++c)
                                wi << (c == 0 ? "" : "\t") << cell(index(r, c));
@@ -2414,43 +2365,66 @@ int InsetMathHull::plaintext(odocstringstream & os,
 }
 
 
-void InsetMathHull::docbook(XMLStream & xs, OutputParams const & runparams) const
-{
+void InsetMathHull::docbook(XMLStream & xs, OutputParams const & runparams) const {
        // Choose the tag around the MathML equation.
        docstring name;
+       bool doCR = false;
        if (getType() == hullSimple)
                name = from_ascii("inlineequation");
-       else
+       else {
+               doCR = true; // This is a block equation, always have <informalequation> on its own line.
                name = from_ascii("informalequation");
+       }
 
        // DocBook also has <equation>, but it comes with a title.
+       // TODO: recognise \tag from amsmath? This would allow having <equation> with a proper title.
 
        docstring attr;
+
+       bool mathmlNamespaceInline = buffer().params().docbook_mathml_prefix == BufferParams::NoPrefix;
+       if (mathmlNamespaceInline)
+               attr += "xmlns=\"http://www.w3.org/1998/Math/MathML\"";
+
        for (row_type i = 0; i < nrows(); ++i) {
                if (!label(i).empty()) {
-                       attr = "xml:id=\"" + xml::cleanID(label(i)) + "\"";
+                       if (!attr.empty())
+                               attr += " ";
+
+                       attr += "xml:id=\"" + xml::cleanID(label(i)) + "\"";
                        break;
                }
        }
 
+       if (doCR)
+               if (!xs.isLastTagCR())
+                       xs << xml::CR();
+
        xs << xml::StartTag(name, attr);
        xs << xml::CR();
 
-       // With DocBook 5, MathML must be within its own namespace; defined in Buffer.cpp::writeDocBookSource as "m".
+       // With DocBook 5, MathML must be within its own namespace (defined in Buffer.cpp::writeDocBookSource, except when
+       // it should be inlined).
        // Output everything in a separate stream so that this does not interfere with the standard flow of DocBook tags.
+       std::string mathmlNamespacePrefix;
+       if (!mathmlNamespaceInline) {
+               if (buffer().params().docbook_mathml_prefix == BufferParams::MPrefix)
+                       mathmlNamespacePrefix = "m";
+               else if (buffer().params().docbook_mathml_prefix == BufferParams::MMLPrefix)
+                       mathmlNamespacePrefix = "mml";
+       }
+
        odocstringstream osmath;
-       MathStream ms(osmath, "m", true);
+       MathMLStream ms(osmath, mathmlNamespacePrefix);
 
        // Output the MathML subtree.
-       odocstringstream ls;
-       otexstream ols(ls);
-
        // TeX transcription. Avoid MTag/ETag so that there are no extraneous spaces.
        ms << "<" << from_ascii("alt") << " role='tex'" << ">";
        // Workaround for db2latex: db2latex always includes equations with
        // \ensuremath{} or \begin{display}\end{display}
        // so we strip LyX' math environment
-       WriteStream wi(ols, false, false, WriteStream::wsDefault, runparams.encoding);
+       odocstringstream ls;
+       otexstream ols(ls);
+       TeXMathStream wi(ols, false, false, TeXMathStream::wsDefault, runparams.encoding);
        InsetMathGrid::write(wi);
        ms << from_utf8(subst(subst(to_utf8(ls.str()), "&", "&amp;"), "<", "&lt;"));
        ms << "</" << from_ascii("alt") << ">";
@@ -2460,24 +2434,36 @@ void InsetMathHull::docbook(XMLStream & xs, OutputParams const & runparams) cons
        // temporary stream; then, if it is possible without error, then copy it back to the "real" stream. Otherwise,
        // some incomplete tags might be put into the real stream.
        try {
-               // First, generate the MathML expression.
+               // First, generate the MathML expression. If there is an error in the generation, this block is not fully
+               // executed, and the formula is not output to the DocBook stream.
                odocstringstream ostmp;
-               MathStream mstmp(ostmp, ms.xmlns(), ms.xmlMode());
-               InsetMathGrid::mathmlize(mstmp);
+               MathMLStream mstmp(ostmp, ms.xmlns());
+               mathmlize(mstmp);
 
-               // Then, output it (but only if the generation can be done without errors!).
-               ms << MTag("math");
+               // Choose the display style for the formula, to be output as an attribute near the formula root.
+               std::string mathmlAttr;
+               if (getType() == hullSimple)
+                       mathmlAttr = "display=\"inline\"";
+               else
+                       mathmlAttr = "display=\"block\"";
+
+               // Then, output the formula.
+               ms << MTag("math", mathmlAttr);
                ms.cr();
                osmath << ostmp.str(); // osmath is not a XMLStream, so no need for XMLStream::ESCAPE_NONE.
                ms << ETag("math");
        } catch (MathExportException const &) {
-               osmath << "MathML export failed. Please report this as a bug.";
+               ms.cr();
+               osmath << "<mathphrase>MathML export failed. Please report this as a bug to the LyX developers: "
+                       "https://www.lyx.org/trac.</mathphrase>";
        }
 
        // Output the complete formula to the DocBook stream.
        xs << XMLStream::ESCAPE_NONE << osmath.str();
        xs << xml::CR();
        xs << xml::EndTag(name);
+       if (doCR)
+               xs << xml::CR();
 }
 
 
@@ -2537,71 +2523,107 @@ void InsetMathHull::htmlize(HtmlStream & os) const
 // this duplicates code from InsetMathGrid, but
 // we need access here to number information,
 // and we simply do not have that in InsetMathGrid.
-void InsetMathHull::mathmlize(MathStream & ms) const
+void InsetMathHull::mathmlize(MathMLStream & ms) const
 {
-       bool const havenumbers = haveNumbers();
-       bool const havetable = havenumbers || nrows() > 1 || ncols() > 1;
+       bool const havetable = haveNumbers() || nrows() > 1 || ncols() > 1;
+
+       // Simplest case: single row, single column, no numbering.
+       if (!havetable) {
+               ms << cell(index(0, 0));
+               return;
+       }
+
+       // More complex case: wrap elements in a table.
+    if (getType() == hullSimple) {
+        ms << MTag("mtable");
+    } else if (getType() >= hullAlign && getType() <= hullXXAlignAt) {
+               // hullAlign, hullAlignAt, hullXAlignAt, hullXXAlignAt
+        string alignment;
+        for (col_type col = 0; col < ncols(); ++col) {
+            alignment += (col % 2) ? "left " : "right ";
+        }
+        ms << MTag("mtable", "displaystyle='true' columnalign='" + alignment + "'");
+    } else {
+        ms << MTag("mtable", "displaystyle='true'");
+    }
 
-       if (havetable)
-               ms << MTag("mtable");
-       char const * const celltag = havetable ? "mtd" : "mrow";
-       // FIXME There does not seem to be wide support at the moment
-       // for mlabeledtr, so we have to use just mtr for now.
-       // char const * const rowtag = havenumbers ? "mlabeledtr" : "mtr";
-       char const * const rowtag = "mtr";
        for (row_type row = 0; row < nrows(); ++row) {
-               if (havetable)
-                       ms << MTag(rowtag);
+               // No Wed browser supports mlabeledtr in 2023, even though it has been introduced in
+               // MathML 2 (2003). Moreover, it is not supported in MathML 4 Core.
+               ms << MTag("mtr");
+
                for (col_type col = 0; col < ncols(); ++col) {
-                       ms << MTag(celltag)
+                       ms << MTag("mtd")
                           << cell(index(row, col))
-                          << ETag(celltag);
+                          << ETag("mtd");
                }
+
                // fleqn?
-               if (havenumbers) {
+               if (haveNumbers()) {
                        ms << MTag("mtd");
                        docstring const & num = numbers_[row];
                        if (!num.empty())
-                               ms << '(' << num << ')';
-                 ms << ETag("mtd");
+                               ms << MTagInline("mtext") << '(' << num << ')' << ETagInline("mtext");
+                   ms << ETag("mtd");
                }
-               if (havetable)
-                       ms << ETag(rowtag);
+
+               ms << ETag("mtr");
        }
-       if (havetable)
-               ms << ETag("mtable");
+
+       ms << ETag("mtable");
 }
 
 
-void InsetMathHull::mathAsLatex(WriteStream & os) const
+docstring InsetMathHull::mathAsLatex() const
 {
-       MathEnsurer ensurer(os, false);
-       bool havenumbers = haveNumbers();
+       bool const havenumbers = haveNumbers();
        bool const havetable = havenumbers || nrows() > 1 || ncols() > 1;
 
        if (!havetable) {
+               odocstringstream ls;
+               otexrowstream ots(ls);
+               TeXMathStream os(ots, false, true, TeXMathStream::wsPreview);
+               ModeSpecifier specifier(os, MATH_MODE);
+               MathEnsurer ensurer(os, false);
+
                os << cell(index(0, 0));
-               return;
+               return ls.str();
        }
 
-       os << "<table class='mathtable'>";
+       odocstringstream ods;
+       XMLStream xs(ods);
+
+       xs << xml::StartTag("table", "class='mathtable'");
        for (row_type row = 0; row < nrows(); ++row) {
-               os << "<tr>";
+               xs << xml::StartTag("tr");
                for (col_type col = 0; col < ncols(); ++col) {
-                       os << "<td class='math'>";
-                       os << cell(index(row, col));
-                       os << "</td>";
+                       xs << xml::StartTag("td", "class='math'");
+
+                       odocstringstream ls;
+                       otexrowstream ots(ls);
+                       TeXMathStream os(ots, false, true, TeXMathStream::wsPreview);
+                       ModeSpecifier specifier(os, MATH_MODE);
+                       MathEnsurer ensurer(os, false);
+
+                       os << cell(index(0, 0));
+                       // ls.str() contains a raw LaTeX string, which might require some encoding before being valid XML.
+                       xs << ls.str();
+
+                       xs << xml::EndTag("td");
                }
                if (havenumbers) {
-                       os << "<td>";
+                       xs << xml::StartTag("td");
                        docstring const & num = numbers_[row];
-                       if (!num.empty())
-                               os << '(' << num << ')';
-                 os << "</td>";
+                       if (!num.empty()) {
+                               xs << '(' << num << ')';
+                       }
+                       xs << xml::EndTag("td");
                }
-               os << "</tr>";
+               xs << xml::EndTag("tr");
        }
-       os << "</table>";
+       xs << xml::EndTag("table");
+
+       return ods.str();
 }
 
 
@@ -2624,22 +2646,29 @@ docstring InsetMathHull::xhtml(XMLStream & xs, OutputParams const & op) const
        // FIXME Eventually we would like to do this inset by inset.
        if (mathtype == BufferParams::MathML) {
                odocstringstream os;
-               MathStream ms(os);
+               MathMLStream ms(os);
                try {
                        mathmlize(ms);
                        success = true;
                } catch (MathExportException const &) {}
                if (success) {
+                       string const name_space_declaration = "xmlns='http://www.w3.org/1998/Math/MathML'";
                        if (getType() == hullSimple)
-                               xs << xml::StartTag("math",
-                                                       "xmlns=\"http://www.w3.org/1998/Math/MathML\"", true);
-                       else
-                               xs << xml::StartTag("math",
-                                     "display=\"block\" xmlns=\"http://www.w3.org/1998/Math/MathML\"", true);
+                           xs << xml::StartTag("math", name_space_declaration, true);
+                       else {
+                   if (!xs.isLastTagCR())
+                        xs << xml::CR();
+                   xs << xml::StartTag("math", name_space_declaration + " display='block'", true);
+                   }
+
                        xs << XMLStream::ESCAPE_NONE
-                                << os.str()
-                                << xml::EndTag("math");
+                          << os.str();
+
+                       if (!xs.isLastTagCR())
+                               xs << xml::CR();
+                       xs << xml::EndTag("math") << xml::CR();
                }
+               // In case of failure, generate an image.
        } else if (mathtype == BufferParams::HTML) {
                odocstringstream os;
                HtmlStream ms(os);
@@ -2654,6 +2683,7 @@ docstring InsetMathHull::xhtml(XMLStream & xs, OutputParams const & op) const
                           << os.str()
                           << xml::EndTag(tag);
                }
+               // In case of failure, generate an image.
        }
 
        // what we actually want is this:
@@ -2668,7 +2698,7 @@ docstring InsetMathHull::xhtml(XMLStream & xs, OutputParams const & op) const
        //
        // so this is for Images.
        if (!success && mathtype != BufferParams::LaTeX) {
-               graphics::PreviewImage const * pimage = 0;
+               graphics::PreviewImage const * pimage = nullptr;
                if (!op.dryrun) {
                        loadPreview(docit_);
                        pimage = preview_->getPreviewImage(buffer());
@@ -2694,9 +2724,9 @@ docstring InsetMathHull::xhtml(XMLStream & xs, OutputParams const & op) const
                        string const tag = (getType() == hullSimple) ? "span" : "div";
                        xs << xml::CR()
                           << xml::StartTag(tag, "style = \"text-align: center;\"")
-                                << xml::CompTag("img", "src=\"" + filename + "\" alt=\"Mathematical Equation\"")
-                                << xml::EndTag(tag)
-                                << xml::CR();
+                          << xml::CompTag("img", "src=\"" + filename + R"(" alt="Mathematical Equation")")
+                          << xml::EndTag(tag)
+                          << xml::CR();
                        success = true;
                }
        }
@@ -2707,12 +2737,8 @@ docstring InsetMathHull::xhtml(XMLStream & xs, OutputParams const & op) const
        if (!success /* || mathtype != BufferParams::LaTeX */) {
                // Unfortunately, we cannot use latexString() because we do not want
                // $...$ or whatever.
-               odocstringstream ls;
-               otexrowstream ots(ls);
-               WriteStream wi(ots, false, true, WriteStream::wsPreview);
-               ModeSpecifier specifier(wi, MATH_MODE);
-               mathAsLatex(wi);
-               docstring const latex = ls.str();
+               // The returned value already has the correct escaping for HTML.
+               docstring const latex = mathAsLatex();
 
                // class='math' allows for use of jsMath
                // http://www.math.union.edu/~dpvc/jsMath/
@@ -2720,7 +2746,7 @@ docstring InsetMathHull::xhtml(XMLStream & xs, OutputParams const & op) const
                // probably should allow for some kind of customization here
                string const tag = (getType() == hullSimple) ? "span" : "div";
                xs << xml::StartTag(tag, "class='math'")
-                  << latex
+                  << XMLStream::ESCAPE_NONE << latex // Don't escape anything: latex might contain XML.
                   << xml::EndTag(tag)
                   << xml::CR();
        }
@@ -2731,7 +2757,7 @@ docstring InsetMathHull::xhtml(XMLStream & xs, OutputParams const & op) const
 void InsetMathHull::toString(odocstream & os) const
 {
        odocstringstream ods;
-       plaintext(ods, OutputParams(0));
+       plaintext(ods, OutputParams(nullptr));
        os << ods.str();
 }
 
@@ -2739,7 +2765,7 @@ void InsetMathHull::toString(odocstream & os) const
 void InsetMathHull::forOutliner(docstring & os, size_t const, bool const) const
 {
        odocstringstream ods;
-       OutputParams op(0);
+       OutputParams op(nullptr);
        op.for_toc = true;
        // FIXME: this results in spilling TeX into the LyXHTML output since the
        // outliner is used to generate the LyXHTML list of figures/etc.