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lyx_mirror/src/mathed/InsetMathHull.cpp
Enrico Forestieri 9536afe742 Fix bug #6595: empty last row of matrix or eqnarray vanishes. 
This patch essentially reverts r30795 and also provides the correct fix
for #2969.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@34751 a592a061-630c-0410-9148-cb99ea01b6c8
2010-07-04 16:31:53 +00:00

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/**
* \file InsetMathHull.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author André Pönitz
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "InsetMathHull.h"
#include "InsetMathChar.h"
#include "InsetMathColor.h"
#include "MathExtern.h"
#include "MathFactory.h"
#include "MathStream.h"
#include "MathSupport.h"
#include "Buffer.h"
#include "BufferParams.h"
#include "BufferView.h"
#include "ColorSet.h"
#include "CutAndPaste.h"
#include "Encoding.h"
#include "FuncRequest.h"
#include "FuncStatus.h"
#include "LaTeXFeatures.h"
#include "LyXRC.h"
#include "MacroTable.h"
#include "output_xhtml.h"
#include "sgml.h"
#include "TextPainter.h"
#include "TocBackend.h"
#include "insets/InsetLabel.h"
#include "insets/InsetRef.h"
#include "insets/RenderPreview.h"
#include "graphics/PreviewImage.h"
#include "graphics/PreviewLoader.h"
#include "frontends/Painter.h"
#include "support/lassert.h"
#include "support/debug.h"
#include "support/gettext.h"
#include "support/lstrings.h"
#include <sstream>
using namespace std;
using namespace lyx::support;
namespace lyx {
using cap::grabAndEraseSelection;
namespace {
int getCols(HullType type)
{
switch (type) {
case hullEqnArray:
return 3;
case hullAlign:
case hullFlAlign:
case hullAlignAt:
case hullXAlignAt:
case hullXXAlignAt:
return 2;
default:
return 1;
}
}
// returns position of first relation operator in the array
// used for "intelligent splitting"
size_t firstRelOp(MathData const & ar)
{
for (MathData::const_iterator it = ar.begin(); it != ar.end(); ++it)
if ((*it)->isRelOp())
return it - ar.begin();
return ar.size();
}
char const * star(bool numbered)
{
return numbered ? "" : "*";
}
} // end anon 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 HullType(-1);
}
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");
default:
lyxerr << "unknown hull type '" << type << "'" << endl;
return from_ascii("none");
}
}
static InsetLabel * dummy_pointer = 0;
InsetMathHull::InsetMathHull(Buffer * buf)
: InsetMathGrid(buf, 1, 1), type_(hullNone), nonum_(1, false),
label_(1, dummy_pointer), preview_(new RenderPreview(this))
{
//lyxerr << "sizeof InsetMath: " << sizeof(InsetMath) << endl;
//lyxerr << "sizeof MetricsInfo: " << sizeof(MetricsInfo) << endl;
//lyxerr << "sizeof InsetMathChar: " << sizeof(InsetMathChar) << endl;
//lyxerr << "sizeof FontInfo: " << sizeof(FontInfo) << endl;
buffer_ = buf;
initMath();
setDefaults();
}
InsetMathHull::InsetMathHull(Buffer * buf, HullType type)
: InsetMathGrid(buf, getCols(type), 1), type_(type), nonum_(1, false),
label_(1, dummy_pointer), preview_(new RenderPreview(this))
{
buffer_ = buf;
initMath();
setDefaults();
}
InsetMathHull::InsetMathHull(InsetMathHull const & other) : InsetMathGrid(other)
{
operator=(other);
}
InsetMathHull::~InsetMathHull()
{
for (size_t i = 0; i < label_.size(); ++i)
delete label_[i];
}
Inset * InsetMathHull::clone() const
{
return new InsetMathHull(*this);
}
InsetMathHull & InsetMathHull::operator=(InsetMathHull const & other)
{
if (this == &other)
return *this;
InsetMathGrid::operator=(other);
type_ = other.type_;
nonum_ = other.nonum_;
buffer_ = other.buffer_;
for (size_t i = 0; i < label_.size(); ++i)
delete label_[i];
label_ = other.label_;
for (size_t i = 0; i != label_.size(); ++i) {
if (label_[i])
label_[i] = new InsetLabel(*label_[i]);
}
preview_.reset(new RenderPreview(*other.preview_, this));
return *this;
}
void InsetMathHull::setBuffer(Buffer & buffer)
{
InsetMathGrid::setBuffer(buffer);
for (size_t i = 0; i != label_.size(); ++i) {
if (label_[i])
label_[i]->setBuffer(buffer);
}
}
void InsetMathHull::updateBuffer(ParIterator const & it, UpdateType utype)
{
if (!buffer_) {
//FIXME: buffer_ should be set at creation for this inset! Problem is
// This inset is created at too many places (see Parser::parse1() in
// MathParser.cpp).
return;
}
for (size_t i = 0; i != label_.size(); ++i) {
if (label_[i])
label_[i]->updateBuffer(it, utype);
}
// pass down
InsetMathGrid::updateBuffer(it, utype);
}
void InsetMathHull::addToToc(DocIterator const & pit)
{
if (!buffer_) {
//FIXME: buffer_ should be set at creation for this inset! Problem is
// This inset is created at too many places (see Parser::parse1() in
// MathParser.cpp).
return;
}
Toc & toc = buffer().tocBackend().toc("equation");
for (row_type row = 0; row != nrows(); ++row) {
if (nonum_[row])
continue;
if (label_[row])
label_[row]->addToToc(pit);
toc.push_back(TocItem(pit, 0, nicelabel(row)));
}
}
Inset * InsetMathHull::editXY(Cursor & cur, int x, int y)
{
if (use_preview_) {
edit(cur, true);
return this;
}
return InsetMathNest::editXY(cur, x, y);
}
InsetMath::mode_type InsetMathHull::currentMode() const
{
if (type_ == hullNone)
return UNDECIDED_MODE;
// definitely math mode ...
return MATH_MODE;
}
bool InsetMathHull::idxFirst(Cursor & cur) const
{
cur.idx() = 0;
cur.pos() = 0;
return true;
}
bool InsetMathHull::idxLast(Cursor & cur) const
{
cur.idx() = nargs() - 1;
cur.pos() = cur.lastpos();
return true;
}
char InsetMathHull::defaultColAlign(col_type col)
{
if (type_ == hullEqnArray)
return "rcl"[col];
if (type_ == hullGather)
return 'c';
if (type_ >= hullAlign)
return "rl"[col & 1];
return 'c';
}
int InsetMathHull::defaultColSpace(col_type col)
{
if (type_ == hullAlign || type_ == hullAlignAt)
return 0;
if (type_ == hullXAlignAt)
return (col & 1) ? 20 : 0;
if (type_ == hullXXAlignAt || type_ == hullFlAlign)
return (col & 1) ? 40 : 0;
return 0;
}
docstring InsetMathHull::standardFont() const
{
docstring font_name;
switch (type_) {
case hullRegexp:
font_name = from_ascii("texttt");
break;
case hullNone:
font_name = from_ascii("lyxnochange");
break;
default:
font_name = from_ascii("mathnormal");
}
return font_name;
}
docstring InsetMathHull::standardColor() const
{
docstring color;
switch (type_) {
case hullRegexp:
color = from_ascii("foreground");
break;
case hullNone:
color = from_ascii("foreground");
break;
default:
color = from_ascii("math");
}
return color;
}
bool InsetMathHull::previewState(BufferView * bv) const
{
if (!editing(bv) && RenderPreview::status() == LyXRC::PREVIEW_ON) {
graphics::PreviewImage const * pimage =
preview_->getPreviewImage(bv->buffer());
return pimage && pimage->image();
}
return false;
}
void InsetMathHull::metrics(MetricsInfo & mi, Dimension & dim) const
{
if (previewState(mi.base.bv)) {
preview_->metrics(mi, dim);
// insert a one pixel gap in front of the formula
dim.wid += 1;
if (display())
dim.des += displayMargin();
// Cache the inset dimension.
setDimCache(mi, dim);
return;
}
FontSetChanger dummy1(mi.base, standardFont());
StyleChanger dummy2(mi.base, display() ? LM_ST_DISPLAY : LM_ST_TEXT);
// let the cells adjust themselves
InsetMathGrid::metrics(mi, dim);
if (display()) {
dim.asc += displayMargin();
dim.des += displayMargin();
}
if (numberedType()) {
FontSetChanger dummy(mi.base, from_ascii("mathbf"));
int l = 0;
for (row_type row = 0; row < nrows(); ++row)
l = max(l, mathed_string_width(mi.base.font, nicelabel(row)));
if (l)
dim.wid += 30 + l;
}
// make it at least as high as the current font
int asc = 0;
int des = 0;
math_font_max_dim(mi.base.font, asc, des);
dim.asc = max(dim.asc, asc);
dim.des = max(dim.des, des);
// Cache the inset dimension.
// FIXME: This will overwrite InsetMathGrid dimension, is that OK?
setDimCache(mi, dim);
}
ColorCode InsetMathHull::backgroundColor(PainterInfo const & pi) const
{
if (previewState(pi.base.bv))
return graphics::PreviewLoader::backgroundColor();
return Color_mathbg;
}
void InsetMathHull::drawBackground(PainterInfo & pi, int x, int y) const
{
Dimension const dim = dimension(*pi.base.bv);
pi.pain.fillRectangle(x + 1, y - dim.asc + 1, dim.wid - 2,
dim.asc + dim.des - 1, pi.backgroundColor(this));
}
void InsetMathHull::draw(PainterInfo & pi, int x, int y) const
{
use_preview_ = previewState(pi.base.bv);
if (type_ == hullRegexp) {
Dimension const dim = dimension(*pi.base.bv);
pi.pain.rectangle(x + 1, y - dim.ascent() + 1,
dim.width() - 2, dim.height() - 2, Color_regexpframe);
}
if (use_preview_) {
// one pixel gap in front
preview_->draw(pi, x + 1, y);
setPosCache(pi, x, y);
return;
}
bool const really_change_color = pi.base.font.color() == Color_none;
ColorChanger dummy0(pi.base.font, standardColor(), really_change_color);
FontSetChanger dummy1(pi.base, standardFont());
StyleChanger dummy2(pi.base, display() ? LM_ST_DISPLAY : LM_ST_TEXT);
InsetMathGrid::draw(pi, x + 1, y);
if (numberedType()) {
int const xx = x + colinfo_.back().offset_ + colinfo_.back().width_ + 20;
for (row_type row = 0; row < nrows(); ++row) {
int const yy = y + rowinfo_[row].offset_;
FontSetChanger dummy(pi.base, from_ascii("mathrm"));
docstring const nl = nicelabel(row);
pi.draw(xx, yy, nl);
}
}
setPosCache(pi, x, y);
}
void InsetMathHull::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
{
if (display()) {
InsetMathGrid::metricsT(mi, dim);
} else {
odocstringstream os;
WriteStream wi(os, false, true, WriteStream::wsDefault);
write(wi);
dim.wid = os.str().size();
dim.asc = 1;
dim.des = 0;
}
}
void InsetMathHull::drawT(TextPainter & pain, int x, int y) const
{
if (display()) {
InsetMathGrid::drawT(pain, x, y);
} else {
odocstringstream os;
WriteStream wi(os, false, true, WriteStream::wsDefault);
write(wi);
pain.draw(x, y, os.str().c_str());
}
}
static docstring latexString(InsetMathHull const & inset)
{
odocstringstream ls;
// This has to be static, because a preview snippet or a math
// macro containing math in text mode (such as $\text{$\phi$}$ or
// \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;
if (inset.isBufferValid())
encoding = &(inset.buffer().params().encoding());
WriteStream wi(ls, false, true, WriteStream::wsPreview, encoding);
inset.write(wi);
return ls.str();
}
void InsetMathHull::initUnicodeMath() const
{
// Trigger classification of the unicode symbols in this inset
docstring const dummy = latexString(*this);
}
void InsetMathHull::addPreview(DocIterator const & inset_pos,
graphics::PreviewLoader & /*ploader*/) const
{
if (RenderPreview::status() == LyXRC::PREVIEW_ON) {
preparePreview(inset_pos);
}
}
void InsetMathHull::preparePreview(DocIterator const & pos) const
{
Buffer const * buffer = pos.buffer();
// collect macros at this position
MacroNameSet macros;
buffer->listMacroNames(macros);
MacroNameSet::iterator it = macros.begin();
MacroNameSet::iterator end = macros.end();
odocstringstream macro_preamble;
for (; it != end; ++it) {
MacroData const * data = buffer->getMacro(*it, pos, true);
if (data) {
data->write(macro_preamble, true);
macro_preamble << endl;
}
}
docstring const snippet = macro_preamble.str() + latexString(*this);
LYXERR(Debug::MACROS, "Preview snippet: " << snippet);
preview_->addPreview(snippet, *buffer);
}
void InsetMathHull::reloadPreview(DocIterator const & pos) const
{
preparePreview(pos);
preview_->startLoading(*pos.buffer());
}
bool InsetMathHull::notifyCursorLeaves(Cursor const & old, Cursor & cur)
{
if (RenderPreview::status() == LyXRC::PREVIEW_ON) {
reloadPreview(old);
cur.updateFlags(Update::Force);
}
return false;
}
docstring InsetMathHull::label(row_type row) const
{
LASSERT(row < nrows(), /**/);
if (InsetLabel * il = label_[row])
return il->screenLabel();
return docstring();
}
void InsetMathHull::label(row_type row, docstring const & label)
{
//lyxerr << "setting label '" << label << "' for row " << row << endl;
if (label_[row]) {
if (label.empty()) {
delete label_[row];
label_[row] = dummy_pointer;
// We need an update of the Buffer reference cache.
// This is achieved by updateBuffer().
if (buffer_)
buffer().updateBuffer();
} else {
if (buffer_)
label_[row]->updateCommand(label);
else
label_[row]->setParam("name", label);
}
return;
}
InsetCommandParams p(LABEL_CODE);
p["name"] = label;
label_[row] = new InsetLabel(buffer_, p);
if (buffer_)
label_[row]->setBuffer(buffer());
}
void InsetMathHull::numbered(row_type row, bool num)
{
nonum_[row] = !num;
if (nonum_[row] && label_[row]) {
delete label_[row];
label_[row] = 0;
if (!buffer_) {
// The buffer is set at the end of readInset.
// When parsing the inset, buffer_ is 0.
return;
}
// We need an update of the Buffer reference cache.
// This is achieved by updateBuffer().
buffer().updateBuffer();
}
}
bool InsetMathHull::numbered(row_type row) const
{
return !nonum_[row];
}
bool InsetMathHull::ams() const
{
return type_ == hullAlign
|| type_ == hullFlAlign
|| type_ == hullMultline
|| type_ == hullGather
|| type_ == hullAlignAt
|| type_ == hullXAlignAt
|| type_ == hullXXAlignAt;
}
Inset::DisplayType InsetMathHull::display() const
{
if (type_ == hullSimple || type_ == hullNone || type_ == hullRegexp)
return Inline;
return AlignCenter;
}
bool InsetMathHull::numberedType() const
{
if (type_ == hullNone)
return false;
if (type_ == hullSimple)
return false;
if (type_ == hullXXAlignAt)
return false;
if (type_ == hullRegexp)
return false;
for (row_type row = 0; row < nrows(); ++row)
if (!nonum_[row])
return true;
return false;
}
void InsetMathHull::validate(LaTeXFeatures & features) const
{
if (features.runparams().isLaTeX()) {
if (ams())
features.require("amsmath");
if (type_ == hullRegexp) {
features.require("color");
string frcol = lcolor.getLaTeXName(Color_regexpframe);
string bgcol = "white";
features.addPreambleSnippet(
string("\\newcommand{\\regexp}[1]{\\fcolorbox{")
+ frcol + string("}{")
+ bgcol + string("}{\\texttt{#1}}}"));
}
// Validation is necessary only if not using AMS math.
// To be safe, we will always run mathedvalidate.
//if (features.amsstyle)
// return;
//features.binom = true;
} else if (features.runparams().math_flavor == OutputParams::MathAsHTML) {
// it would be better to do this elsewhere, but we can't validate in
// InsetMathMatrix and we have no way, outside MathExtern, to know if
// we even have any matrices.
features.addPreambleSnippet("<style type=\"text/css\">\n"
"table.matrix{display: inline-block; vertical-align: middle; text-align:center;}\n"
"table.matrix td{padding: 0.25px;}\n"
"td.ldelim{width: 0.5ex; border: thin solid black; border-right: none;}\n"
"td.rdelim{width: 0.5ex; border: thin solid black; border-left: none;}\n"
"</style>");
}
InsetMathGrid::validate(features);
}
void InsetMathHull::header_write(WriteStream & os) const
{
bool n = numberedType();
switch(type_) {
case hullNone:
break;
case hullSimple:
os << '$';
if (cell(0).empty())
os << ' ';
break;
case hullEquation:
if (n)
os << "\\begin{equation" << star(n) << "}\n";
else
os << "\\[\n";
break;
case hullEqnArray:
case hullAlign:
case hullFlAlign:
case hullGather:
case hullMultline:
os << "\\begin{" << hullName(type_) << star(n) << "}\n";
break;
case hullAlignAt:
case hullXAlignAt:
os << "\\begin{" << hullName(type_) << star(n) << '}'
<< '{' << static_cast<unsigned int>((ncols() + 1)/2) << "}\n";
break;
case hullXXAlignAt:
os << "\\begin{" << hullName(type_) << '}'
<< '{' << static_cast<unsigned int>((ncols() + 1)/2) << "}\n";
break;
case hullRegexp:
os << "\\regexp{{{";
break;
default:
os << "\\begin{unknown" << star(n) << '}';
break;
}
}
void InsetMathHull::footer_write(WriteStream & os) const
{
bool n = numberedType();
switch(type_) {
case hullNone:
os << "\n";
break;
case hullSimple:
os << '$';
break;
case hullEquation:
if (n)
os << "\\end{equation" << star(n) << "}\n";
else
os << "\\]\n";
break;
case hullEqnArray:
case hullAlign:
case hullFlAlign:
case hullAlignAt:
case hullXAlignAt:
case hullGather:
case hullMultline:
os << "\\end{" << hullName(type_) << star(n) << "}\n";
break;
case hullXXAlignAt:
os << "\\end{" << hullName(type_) << "}\n";
break;
case hullRegexp:
os << "}}}";
break;
default:
os << "\\end{unknown" << star(n) << '}';
break;
}
}
bool InsetMathHull::rowChangeOK() const
{
return
type_ == hullEqnArray || type_ == hullAlign ||
type_ == hullFlAlign || type_ == hullAlignAt ||
type_ == hullXAlignAt || type_ == hullXXAlignAt ||
type_ == hullGather || type_ == hullMultline;
}
bool InsetMathHull::colChangeOK() const
{
return
type_ == hullAlign || type_ == hullFlAlign ||type_ == hullAlignAt ||
type_ == hullXAlignAt || type_ == hullXXAlignAt;
}
void InsetMathHull::addRow(row_type row)
{
if (!rowChangeOK())
return;
bool numbered = numberedType();
docstring lab;
if (type_ == hullMultline) {
if (row + 1 == nrows()) {
nonum_[row] = true;
lab = label(row);
} else
numbered = false;
}
nonum_.insert(nonum_.begin() + row + 1, !numbered);
label_.insert(label_.begin() + row + 1, dummy_pointer);
if (!lab.empty())
label(row + 1, lab);
InsetMathGrid::addRow(row);
}
void InsetMathHull::swapRow(row_type row)
{
if (nrows() <= 1)
return;
if (row + 1 == nrows())
--row;
// gcc implements the standard std::vector<bool> which is *not* a container:
// http://www.gotw.ca/publications/N1185.pdf
// As a results, it doesn't like this:
// swap(nonum_[row], nonum_[row + 1]);
// so we do it manually:
bool const b = nonum_[row];
nonum_[row] = nonum_[row + 1];
nonum_[row + 1] = b;
swap(label_[row], label_[row + 1]);
InsetMathGrid::swapRow(row);
}
void InsetMathHull::delRow(row_type row)
{
if (nrows() <= 1 || !rowChangeOK())
return;
if (row + 1 == nrows() && type_ == hullMultline) {
bool const b = nonum_[row - 1];
nonum_[row - 1] = nonum_[row];
nonum_[row] = b;
swap(label_[row - 1], label_[row]);
InsetMathGrid::delRow(row);
return;
}
InsetMathGrid::delRow(row);
// The last dummy row has no number info nor a label.
// Test nrows() + 1 because we have already erased the row.
if (row == nrows() + 1)
row--;
nonum_.erase(nonum_.begin() + row);
delete label_[row];
label_.erase(label_.begin() + row);
}
void InsetMathHull::addCol(col_type col)
{
if (!colChangeOK())
return;
InsetMathGrid::addCol(col);
}
void InsetMathHull::delCol(col_type col)
{
if (ncols() <= 1 || !colChangeOK())
return;
InsetMathGrid::delCol(col);
}
docstring InsetMathHull::nicelabel(row_type row) const
{
if (nonum_[row])
return docstring();
if (!label_[row])
return from_ascii("(#)");
return '(' + label_[row]->screenLabel() + from_ascii(", #)");
}
void InsetMathHull::glueall()
{
MathData ar;
for (idx_type i = 0; i < nargs(); ++i)
ar.append(cell(i));
*this = InsetMathHull(buffer_, hullSimple);
cell(0) = ar;
setDefaults();
}
void InsetMathHull::splitTo2Cols()
{
LASSERT(ncols() == 1, /**/);
InsetMathGrid::addCol(1);
for (row_type row = 0; row < nrows(); ++row) {
idx_type const i = 2 * row;
pos_type pos = firstRelOp(cell(i));
cell(i + 1) = MathData(buffer_, cell(i).begin() + pos, cell(i).end());
cell(i).erase(pos, cell(i).size());
}
}
void InsetMathHull::splitTo3Cols()
{
LASSERT(ncols() < 3, /**/);
if (ncols() < 2)
splitTo2Cols();
InsetMathGrid::addCol(2);
for (row_type row = 0; row < nrows(); ++row) {
idx_type const i = 3 * row + 1;
if (cell(i).size()) {
cell(i + 1) = MathData(buffer_, cell(i).begin() + 1, cell(i).end());
cell(i).erase(1, cell(i).size());
}
}
}
void InsetMathHull::changeCols(col_type cols)
{
if (ncols() == cols)
return;
else if (ncols() < cols) {
// split columns
if (cols < 3)
splitTo2Cols();
else {
splitTo3Cols();
while (ncols() < cols)
InsetMathGrid::addCol(ncols());
}
return;
}
// combine columns
for (row_type row = 0; row < nrows(); ++row) {
idx_type const i = row * ncols();
for (col_type col = cols; col < ncols(); ++col) {
cell(i + cols - 1).append(cell(i + col));
}
}
// delete columns
while (ncols() > cols) {
InsetMathGrid::delCol(ncols() - 1);
}
}
HullType InsetMathHull::getType() const
{
return type_;
}
void InsetMathHull::setType(HullType type)
{
type_ = type;
setDefaults();
}
void InsetMathHull::mutate(HullType newtype)
{
//lyxerr << "mutating from '" << type_ << "' to '" << newtype << "'" << endl;
// we try to move along the chain
// none <-> simple <-> equation <-> eqnarray -> *align* -> multline, gather -+
// ^ |
// +-------------------------------------+
// we use eqnarray as intermediate type for mutations that are not
// directly supported because it handles labels and numbering for
// "down mutation".
if (newtype == type_) {
// done
}
else if (newtype < hullNone) {
// unknown type
dump();
}
else if (type_ == hullNone) {
setType(hullSimple);
numbered(0, false);
mutate(newtype);
}
else if (type_ == hullSimple) {
if (newtype == hullNone) {
setType(hullNone);
numbered(0, false);
} else {
setType(hullEquation);
numbered(0, false);
mutate(newtype);
}
}
else if (type_ == hullEquation) {
if (newtype < type_) {
setType(hullSimple);
numbered(0, false);
mutate(newtype);
} else if (newtype == hullEqnArray) {
// split it "nicely" on the first relop
splitTo3Cols();
setType(hullEqnArray);
} else if (newtype == hullMultline || newtype == hullGather) {
setType(newtype);
} else {
// split it "nicely"
splitTo2Cols();
setType(hullAlign);
mutate(newtype);
}
}
else if (type_ == hullEqnArray) {
if (newtype < type_) {
// set correct (no)numbering
nonum_[0] = true;
for (row_type row = 0; row < nrows(); ++row) {
if (!nonum_[row]) {
nonum_[0] = false;
break;
}
}
// set first non-empty label
for (row_type row = 0; row < nrows(); ++row) {
if (label_[row]) {
label_[0] = label_[row];
break;
}
}
glueall();
mutate(newtype);
} else { // align & Co.
changeCols(2);
setType(hullAlign);
mutate(newtype);
}
}
else if (type_ == hullAlign || type_ == hullAlignAt ||
type_ == hullXAlignAt || type_ == hullFlAlign) {
if (newtype < hullAlign) {
changeCols(3);
setType(hullEqnArray);
mutate(newtype);
} else if (newtype == hullGather || newtype == hullMultline) {
changeCols(1);
setType(newtype);
} else if (newtype == hullXXAlignAt) {
for (row_type row = 0; row < nrows(); ++row)
numbered(row, false);
setType(newtype);
} else {
setType(newtype);
}
}
else if (type_ == hullXXAlignAt) {
for (row_type row = 0; row < nrows(); ++row)
numbered(row, false);
if (newtype < hullAlign) {
changeCols(3);
setType(hullEqnArray);
mutate(newtype);
} else if (newtype == hullGather || newtype == hullMultline) {
changeCols(1);
setType(newtype);
} else {
setType(newtype);
}
}
else if (type_ == hullMultline || type_ == hullGather) {
if (newtype == hullGather || newtype == hullMultline)
setType(newtype);
else if (newtype == hullAlign || newtype == hullFlAlign ||
newtype == hullAlignAt || newtype == hullXAlignAt) {
splitTo2Cols();
setType(newtype);
} else if (newtype == hullXXAlignAt) {
splitTo2Cols();
for (row_type row = 0; row < nrows(); ++row)
numbered(row, false);
setType(newtype);
} else {
splitTo3Cols();
setType(hullEqnArray);
mutate(newtype);
}
}
else {
lyxerr << "mutation from '" << to_utf8(hullName(type_))
<< "' to '" << to_utf8(hullName(newtype))
<< "' not implemented" << endl;
}
}
docstring InsetMathHull::eolString(row_type row, bool fragile, bool last_eoln) const
{
docstring res;
if (numberedType()) {
if (label_[row] && !nonum_[row])
res += "\\label{" +
escape(label_[row]->getParam("name")) + '}';
if (nonum_[row] && (type_ != hullMultline))
res += "\\nonumber ";
}
// Never add \\ on the last empty line of eqnarray and friends
last_eoln = false;
return res + InsetMathGrid::eolString(row, fragile, last_eoln);
}
void InsetMathHull::write(WriteStream & os) const
{
ModeSpecifier specifier(os, MATH_MODE);
header_write(os);
InsetMathGrid::write(os);
footer_write(os);
}
void InsetMathHull::normalize(NormalStream & os) const
{
os << "[formula " << hullName(type_) << ' ';
InsetMathGrid::normalize(os);
os << "] ";
}
void InsetMathHull::mathmlize(MathStream & os) const
{
InsetMathGrid::mathmlize(os);
}
void InsetMathHull::infoize(odocstream & os) const
{
os << "Type: " << hullName(type_);
}
void InsetMathHull::check() const
{
LASSERT(nonum_.size() == nrows(), /**/);
LASSERT(label_.size() == nrows(), /**/);
}
void InsetMathHull::doExtern(Cursor & cur, FuncRequest & func)
{
docstring dlang;
docstring extra;
idocstringstream iss(func.argument());
iss >> dlang >> extra;
if (extra.empty())
extra = from_ascii("noextra");
string const lang = to_ascii(dlang);
// FIXME: temporarily disabled
//if (cur.selection()) {
// MathData ar;
// selGet(cur.ar);
// lyxerr << "use selection: " << ar << endl;
// insert(pipeThroughExtern(lang, extra, ar));
// return;
//}
MathData eq;
eq.push_back(MathAtom(new InsetMathChar('=')));
// go to first item in line
cur.idx() -= cur.idx() % ncols();
cur.pos() = 0;
if (getType() == hullSimple) {
size_type pos = cur.cell().find_last(eq);
MathData ar;
if (cur.inMathed() && cur.selection()) {
asArray(grabAndEraseSelection(cur), ar);
} else if (pos == cur.cell().size()) {
ar = cur.cell();
lyxerr << "use whole cell: " << ar << endl;
} else {
ar = MathData(buffer_, cur.cell().begin() + pos + 1, cur.cell().end());
lyxerr << "use partial cell form pos: " << pos << endl;
}
cur.cell().append(eq);
cur.cell().append(pipeThroughExtern(lang, extra, ar));
cur.pos() = cur.lastpos();
return;
}
if (getType() == hullEquation) {
lyxerr << "use equation inset" << endl;
mutate(hullEqnArray);
MathData & ar = cur.cell();
lyxerr << "use cell: " << ar << endl;
++cur.idx();
cur.cell() = eq;
++cur.idx();
cur.cell() = pipeThroughExtern(lang, extra, ar);
// move to end of line
cur.pos() = cur.lastpos();
return;
}
{
lyxerr << "use eqnarray" << endl;
cur.idx() += 2 - cur.idx() % ncols();
cur.pos() = 0;
MathData ar = cur.cell();
lyxerr << "use cell: " << ar << endl;
// FIXME: temporarily disabled
addRow(cur.row());
++cur.idx();
++cur.idx();
cur.cell() = eq;
++cur.idx();
cur.cell() = pipeThroughExtern(lang, extra, ar);
cur.pos() = cur.lastpos();
}
}
void InsetMathHull::doDispatch(Cursor & cur, FuncRequest & cmd)
{
//lyxerr << "action: " << cmd.action() << endl;
switch (cmd.action()) {
case LFUN_FINISHED_BACKWARD:
case LFUN_FINISHED_FORWARD:
case LFUN_FINISHED_RIGHT:
case LFUN_FINISHED_LEFT:
//lyxerr << "action: " << cmd.action() << endl;
InsetMathGrid::doDispatch(cur, cmd);
cur.undispatched();
break;
case LFUN_BREAK_PARAGRAPH:
// just swallow this
break;
case LFUN_NEWLINE_INSERT:
// some magic for the common case
if (type_ == hullSimple || type_ == hullEquation) {
cur.recordUndoInset();
bool const align =
cur.bv().buffer().params().use_amsmath == BufferParams::package_on;
mutate(align ? hullAlign : hullEqnArray);
cur.idx() = nrows() * ncols() - 1;
cur.pos() = cur.lastpos();
}
InsetMathGrid::doDispatch(cur, cmd);
break;
case LFUN_MATH_NUMBER_TOGGLE: {
//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)
numbered(row, !old);
cur.message(old ? _("No number") : _("Number"));
break;
}
case LFUN_MATH_NUMBER_LINE_TOGGLE: {
cur.recordUndoInset();
row_type r = (type_ == hullMultline) ? nrows() - 1 : cur.row();
bool old = numbered(r);
cur.message(old ? _("No number") : _("Number"));
numbered(r, !old);
break;
}
case LFUN_LABEL_INSERT: {
cur.recordUndoInset();
row_type r = (type_ == hullMultline) ? nrows() - 1 : cur.row();
docstring old_label = label(r);
// FIXME refstyle
// Allow customization of this separator
docstring const default_label = from_ascii("eq:");
if (old_label.empty())
old_label = default_label;
InsetCommandParams p(LABEL_CODE);
p["name"] = cmd.argument().empty() ? old_label : cmd.argument();
string const data = InsetCommand::params2string("label", p);
if (cmd.argument().empty())
cur.bv().showDialog("label", data);
else {
FuncRequest fr(LFUN_INSET_INSERT, data);
dispatch(cur, fr);
}
break;
}
case LFUN_LABEL_COPY_AS_REF: {
row_type row;
if (cmd.argument().empty() && &cur.inset() == this)
// if there is no argument and we're inside math, we retrieve
// the row number from the cursor position.
row = (type_ == hullMultline) ? nrows() - 1 : cur.row();
else {
// 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 (!nonum_[row] && label_[row]
&& (cmd.argument().empty() || label(row) == cmd.argument()))
break;
}
if (row == nrows())
break;
InsetCommandParams p(REF_CODE, "ref");
p["reference"] = label(row);
cap::clearSelection();
cap::copyInset(cur, new InsetRef(buffer_, p), label(row));
break;
}
case LFUN_WORD_DELETE_FORWARD:
case LFUN_CHAR_DELETE_FORWARD:
if (col(cur.idx()) + 1 == ncols()
&& cur.pos() == cur.lastpos()
&& !cur.selection()) {
if (!label(row(cur.idx())).empty()) {
cur.recordUndoInset();
label(row(cur.idx()), docstring());
} else if (numbered(row(cur.idx()))) {
cur.recordUndoInset();
numbered(row(cur.idx()), false);
} else {
InsetMathGrid::doDispatch(cur, cmd);
return;
}
} else {
InsetMathGrid::doDispatch(cur, cmd);
return;
}
break;
case LFUN_INSET_INSERT: {
//lyxerr << "arg: " << to_utf8(cmd.argument()) << endl;
// FIXME: this should be cleaned up to use InsetLabel methods directly.
string const name = cmd.getArg(0);
if (name == "label") {
InsetCommandParams p(LABEL_CODE);
InsetCommand::string2params(name, to_utf8(cmd.argument()), p);
docstring str = p["name"];
cur.recordUndoInset();
row_type const r = (type_ == hullMultline) ? nrows() - 1 : cur.row();
str = trim(str);
if (!str.empty())
numbered(r, true);
docstring old = label(r);
if (str != old) {
if (label_[r])
// The label will take care of the reference update.
label(r, str);
else {
label(r, str);
// Newly created inset so initialize it.
label_[r]->initView();
}
}
break;
}
InsetMathGrid::doDispatch(cur, cmd);
return;
}
case LFUN_MATH_EXTERN:
cur.recordUndoInset();
doExtern(cur, cmd);
break;
case LFUN_MATH_MUTATE: {
cur.recordUndoInset();
row_type row = cur.row();
col_type col = cur.col();
mutate(hullType(cmd.argument()));
cur.idx() = row * ncols() + col;
if (cur.idx() > cur.lastidx()) {
cur.idx() = cur.lastidx();
cur.pos() = cur.lastpos();
}
if (cur.pos() > cur.lastpos())
cur.pos() = cur.lastpos();
// FIXME: find some more clever handling of the selection,
// i.e. preserve it.
cur.clearSelection();
//cur.dispatched(FINISHED);
break;
}
case LFUN_MATH_DISPLAY: {
cur.recordUndoInset();
mutate(type_ == hullSimple ? hullEquation : hullSimple);
cur.idx() = 0;
cur.pos() = cur.lastpos();
//cur.dispatched(FINISHED);
break;
}
default:
InsetMathGrid::doDispatch(cur, cmd);
break;
}
}
bool InsetMathHull::getStatus(Cursor & cur, FuncRequest const & cmd,
FuncStatus & status) const
{
switch (cmd.action()) {
case LFUN_FINISHED_BACKWARD:
case LFUN_FINISHED_FORWARD:
case LFUN_FINISHED_RIGHT:
case LFUN_FINISHED_LEFT:
case LFUN_UP:
case LFUN_DOWN:
case LFUN_NEWLINE_INSERT:
case LFUN_MATH_EXTERN:
case LFUN_MATH_DISPLAY:
// we handle these
status.setEnabled(true);
return true;
case LFUN_MATH_MUTATE: {
HullType ht = hullType(cmd.argument());
status.setOnOff(type_ == ht);
status.setEnabled(true);
return true;
}
case LFUN_MATH_NUMBER_TOGGLE:
// FIXME: what is the right test, this or the one of
// LABEL_INSERT?
status.setEnabled(display() != Inline);
status.setOnOff(numberedType());
return true;
case LFUN_MATH_NUMBER_LINE_TOGGLE: {
// FIXME: what is the right test, this or the one of
// LABEL_INSERT?
bool const enable = (type_ == hullMultline)
? (nrows() - 1 == cur.row())
: display() != Inline && nrows() > 1;
row_type const r = (type_ == hullMultline) ? nrows() - 1 : cur.row();
status.setEnabled(enable);
status.setOnOff(enable && numbered(r));
return true;
}
case LFUN_LABEL_INSERT:
status.setEnabled(type_ != hullSimple);
return true;
case LFUN_LABEL_COPY_AS_REF: {
bool enabled = false;
row_type row;
if (cmd.argument().empty() && &cur.inset() == this) {
// if there is no argument and we're inside math, we retrieve
// the row number from the cursor position.
row = (type_ == hullMultline) ? nrows() - 1 : cur.row();
enabled = numberedType() && label_[row] && !nonum_[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 (!nonum_[row] && label_[row] &&
(cmd.argument().empty() || label(row) == cmd.argument())) {
enabled = true;
break;
}
}
}
status.setEnabled(enabled);
return true;
}
case LFUN_INSET_INSERT:
if (cmd.getArg(0) == "label") {
status.setEnabled(type_ != hullSimple);
return true;
}
return InsetMathGrid::getStatus(cur, cmd, status);
case LFUN_INSET_MODIFY: {
istringstream is(to_utf8(cmd.argument()));
string s;
is >> s;
if (s != "tabular")
return InsetMathGrid::getStatus(cur, cmd, status);
is >> s;
if (!rowChangeOK()
&& (s == "append-row"
|| s == "delete-row"
|| s == "copy-row")) {
status.message(bformat(
from_utf8(N_("Can't change number of rows in '%1$s'")),
hullName(type_)));
status.setEnabled(false);
return true;
}
if (!colChangeOK()
&& (s == "append-column"
|| s == "delete-column"
|| s == "copy-column")) {
status.message(bformat(
from_utf8(N_("Can't change number of columns in '%1$s'")),
hullName(type_)));
status.setEnabled(false);
return true;
}
if ((type_ == hullSimple
|| type_ == hullEquation
|| type_ == hullNone) &&
(s == "add-hline-above" || s == "add-hline-below")) {
status.message(bformat(
from_utf8(N_("Can't add horizontal grid lines in '%1$s'")),
hullName(type_)));
status.setEnabled(false);
return true;
}
if (s == "add-vline-left" || s == "add-vline-right") {
status.message(bformat(
from_utf8(N_("Can't add vertical grid lines in '%1$s'")),
hullName(type_)));
status.setEnabled(false);
return true;
}
if (s == "valign-top" || s == "valign-middle"
|| s == "valign-bottom" || s == "align-left"
|| s == "align-center" || s == "align-right") {
status.setEnabled(false);
return true;
}
return InsetMathGrid::getStatus(cur, cmd, status);
}
default:
return InsetMathGrid::getStatus(cur, cmd, status);
}
// This cannot really happen, but inserted to shut-up gcc
return InsetMathGrid::getStatus(cur, cmd, status);
}
/////////////////////////////////////////////////////////////////////
// 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)
{
// this whole function is a hack and won't work for incremental font
// changes...
cur.recordUndo();
if (cur.inset().asInsetMath()->name() == font)
cur.handleFont(to_utf8(font));
else {
cur.handleNest(createInsetMath(font, cur.buffer()));
cur.insert(arg);
}
}
void InsetMathHull::handleFont2(Cursor & cur, docstring const & arg)
{
cur.recordUndo();
Font font;
bool b;
font.fromString(to_utf8(arg), b);
if (font.fontInfo().color() != Color_inherit) {
MathAtom at = MathAtom(new InsetMathColor(buffer_, true, font.fontInfo().color()));
cur.handleNest(at, 0);
}
}
void InsetMathHull::edit(Cursor & cur, bool front, EntryDirection 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.
cur.updateFlags(Update::Force);
}
void InsetMathHull::revealCodes(Cursor & cur) const
{
if (!cur.inMathed())
return;
odocstringstream os;
cur.info(os);
cur.message(os.str());
/*
// write something to the minibuffer
// translate to latex
cur.markInsert(bv);
ostringstream os;
write(os);
string str = os.str();
cur.markErase(bv);
string::size_type pos = 0;
string res;
for (string::iterator it = str.begin(); it != str.end(); ++it) {
if (*it == '\n')
res += ' ';
else if (*it == '\0') {
res += " -X- ";
pos = it - str.begin();
}
else
res += *it;
}
if (pos > 30)
res = res.substr(pos - 30);
if (res.size() > 60)
res = res.substr(0, 60);
cur.message(res);
*/
}
/////////////////////////////////////////////////////////////////////
#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;
WriteStream wi(oss, false, false, WriteStream::wsDefault);
oss << "Formula ";
write(wi);
os << to_utf8(oss.str());
}
void InsetMathHull::read(Lexer & lex)
{
MathAtom at;
mathed_parse_normal(buffer_, at, lex, Parse::TRACKMACRO);
operator=(*at->asHullInset());
}
bool InsetMathHull::readQuiet(Lexer & lex)
{
MathAtom at;
bool success = mathed_parse_normal(buffer_, at, lex, Parse::QUIET);
if (success)
operator=(*at->asHullInset());
return success;
}
int InsetMathHull::plaintext(odocstream & os, OutputParams const &) const
{
if (0 && display()) {
Dimension dim;
TextMetricsInfo mi;
metricsT(mi, dim);
TextPainter tpain(dim.width(), dim.height());
drawT(tpain, 0, dim.ascent());
tpain.show(os, 3);
// reset metrics cache to "real" values
//metrics();
return tpain.textheight();
} else {
odocstringstream oss;
Encoding const * const enc = encodings.fromLyXName("utf8");
WriteStream wi(oss, false, true, WriteStream::wsDefault, enc);
// Fix Bug #6139
if (type_ == hullRegexp)
write(wi);
else
wi << cell(0);
docstring const str = oss.str();
os << str;
return str.size();
}
}
int InsetMathHull::docbook(odocstream & os, OutputParams const & runparams) const
{
MathStream ms(os);
int res = 0;
docstring name;
if (getType() == hullSimple)
name = from_ascii("inlineequation");
else
name = from_ascii("informalequation");
docstring bname = name;
if (!label(0).empty())
bname += " id='" + sgml::cleanID(buffer(), runparams, label(0)) + "'";
++ms.tab(); ms.cr(); ms.os() << '<' << bname << '>';
odocstringstream ls;
if (runparams.flavor == OutputParams::XML) {
ms << MTag("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(ls, false, false, WriteStream::wsDefault, runparams.encoding);
InsetMathGrid::write(wi);
ms << from_utf8(subst(subst(to_utf8(ls.str()), "&", "&amp;"), "<", "&lt;"));
ms << ETag("alt");
ms << MTag("math");
ms << ETag("alt");
ms << MTag("math");
InsetMathGrid::mathmlize(ms);
ms << ETag("math");
} else {
ms << MTag("alt role='tex'");
res = latex(ls, runparams);
ms << from_utf8(subst(subst(to_utf8(ls.str()), "&", "&amp;"), "<", "&lt;"));
ms << ETag("alt");
}
ms << from_ascii("<graphic fileref=\"eqn/");
if (!label(0).empty())
ms << sgml::cleanID(buffer(), runparams, label(0));
else
ms << sgml::uniqueID(from_ascii("anon"));
if (runparams.flavor == OutputParams::XML)
ms << from_ascii("\"/>");
else
ms << from_ascii("\">");
ms.cr(); --ms.tab(); ms.os() << "</" << name << '>';
return ms.line() + res;
}
docstring InsetMathHull::xhtml(XHTMLStream & xs, OutputParams const &) const
{
BufferParams::MathOutput mathtype = buffer().params().html_math_output;
// FIXME Eventually we would like to do this inset by inset.
switch (mathtype) {
case BufferParams::MathML: {
if (getType() == hullSimple)
xs << html::StartTag("math",
"xmlns=\"http://www.w3.org/1998/Math/MathML\"", true);
else
xs << html::StartTag("math",
"display=\"block\" xmlns=\"http://www.w3.org/1998/Math/MathML\"", true);
MathStream ms(xs.os());
InsetMathGrid::mathmlize(ms);
xs << html::EndTag("math");
break;
}
case BufferParams::HTML: {
string tag = (getType() == hullSimple) ? "span" : "div";
xs << html::StartTag(tag, "class='formula'", true);
HtmlStream ms(xs.os());
InsetMathGrid::htmlize(ms);
xs << html::EndTag(tag);
break;
}
case BufferParams::Images: {
LYXERR0("Image output for math presently unsupported.");
break;
}
case BufferParams::LaTeX: {
// FIXME Obviously, the only real question is how to wrap this.
LYXERR0("LaTeX output for math presently unsupported.");
}
} // end switch
return docstring();
}
void InsetMathHull::tocString(odocstream & os) const
{
plaintext(os, OutputParams(0));
}
docstring InsetMathHull::contextMenu(BufferView const &, int, int) const
{
return from_ascii("context-math");
}
} // namespace lyx
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