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Make InsetMathExInt handle products as well as sums.

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We can do more here, but it's actually not clear to me whether we even
need to give these things special treatment for MathML. I may revert
this.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@32568 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Richard Heck 2009-12-17 17:28:07 +00:00
parent c3fc67ef54
commit 46e1424678
3 changed files with 33 additions and 17 deletions
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14
src/mathed/InsetMathExInt.cpp
View File

@ -71,8 +71,16 @@ void InsetMathExInt::draw(PainterInfo &, int, int) const
}
bool InsetMathExInt::isExIntOperator(docstring const & name)
{
std::string const & sname = to_utf8(name);
return sname == "sum" || sname == "prod";
}
void InsetMathExInt::maple(MapleStream & os) const
{
// FIXME Products and the like may need special treatment.
os << symbol_ << '(';
if (cell(0).size())
os << cell(0);
@ -87,6 +95,7 @@ void InsetMathExInt::maple(MapleStream & os) const
void InsetMathExInt::maxima(MaximaStream & os) const
{
// FIXME Products and the like may need special treatment.
if (symbol_ == "int")
os << "integrate(";
else
@ -102,8 +111,10 @@ void InsetMathExInt::maxima(MaximaStream & os) const
os << cell(1) << ')';
}
void InsetMathExInt::mathematica(MathematicaStream & os) const
{
// FIXME Products and the like may need special treatment.
if (symbol_ == "int")
os << "Integrate[";
else if (symbol_ == "sum")
@ -125,7 +136,7 @@ void InsetMathExInt::mathematica(MathematicaStream & os) const
void InsetMathExInt::mathmlize(MathStream & os) const
{
InsetMathSymbol sym(symbol_);
if (symbol_ == "sum") {
if (isExIntOperator(symbol_)) {
bool const lower = !cell(1).empty();
bool const upper = !cell(3).empty();
if (lower && upper)
@ -189,5 +200,4 @@ void InsetMathExInt::write(WriteStream &) const
LYXERR0("should not happen");
}
} // namespace lyx

6
src/mathed/InsetMathExInt.h
View File

@ -17,7 +17,7 @@
// or \sum, \prod... for interfacing external programs
#include "InsetMathNest.h"
#include "support/strfwd.h"
namespace lyx {
@ -57,11 +57,13 @@ public:
void write(WriteStream & os) const;
///
InsetCode lyxCode() const { return MATH_EXINT_CODE; }
/// is this a sum, product, or whatever that we can handle?
/// note that this does not include integrals.
static bool isExIntOperator(docstring const &);
private:
virtual Inset * clone() const;
///
bool hasScripts() const;
///
docstring symbol_;
};

30
src/mathed/MathExtern.cpp
View File

@ -80,7 +80,6 @@ typedef bool TestItemFunc(MathAtom const &);
typedef MathAtom ReplaceArgumentFunc(const MathData & ar);
// try to extract a super/subscript
// modify iterator position to point behind the thing
bool extractScript(MathData & ar,
@ -356,7 +355,7 @@ void splitScripts(MathData & ar)
// leave alone sums and integrals
InsetMathSymbol const * sym =
script->nuc().front()->asSymbolInset();
if (sym && (sym->name() == "sum" || sym->name() == "int"))
if (sym && (InsetMathExInt::isExIntOperator(sym->name()) || sym->name() == "int"))
continue;
}
@ -705,25 +704,29 @@ bool testEqualSign(MathAtom const & at)
}
bool testSumSymbol(MathAtom const & p)
bool testSumLikeSymbol(MathAtom const & p)
{
return testSymbol(p, from_ascii("sum"));
return InsetMathExInt::isExIntOperator(p->name());
}
bool testSum(MathAtom const & at)
docstring testSumLike(MathAtom const & at)
{
return
testSumSymbol(at) ||
( at->asScriptInset()
if (testSumLikeSymbol(at))
return at->name();
if ( at->asScriptInset()
&& at->asScriptInset()->nuc().size()
&& testSumSymbol(at->asScriptInset()->nuc().back()) );
&& testSumLikeSymbol(at->asScriptInset()->nuc().back()) )
return at->asScriptInset()->nuc().back()->name();
return docstring();
}
// replace '\sum' ['_^'] f(x) sequences by a real InsetMathExInt
// and similar things, like \prod. The things we extract are
// determined by InsetMathExInt::isExIntOperator().
// assume 'extractDelims' ran before
void extractSums(MathData & ar)
void extractSumLike(MathData & ar)
{
// we need at least two items...
if (ar.size() < 2)
@ -736,11 +739,12 @@ void extractSums(MathData & ar)
MathData::iterator it = ar.begin() + i;
// is this a sum name?
if (!testSum(ar[i]))
docstring const opname = testSumLike(ar[i]);
if (opname.empty())
continue;
// create a proper inset as replacement
auto_ptr<InsetMathExInt> p(new InsetMathExInt(buf, from_ascii("sum")));
auto_ptr<InsetMathExInt> p(new InsetMathExInt(buf, opname));
// collect lower bound and summation index
InsetMathScript const * sub = ar[i]->asScriptInset();
@ -949,7 +953,7 @@ void extractStructure(MathData & ar, ExternalMath kind)
splitScripts(ar);
extractDelims(ar);
extractIntegrals(ar, kind);
extractSums(ar);
extractSumLike(ar);
extractNumbers(ar);
extractMatrices(ar);
extractFunctions(ar, kind);