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InsetMathFrac: reimplement \cfrac with its optional argument the way Enrico proposed (http://www.mail-archive.com/lyx-devel@lists.lyx.org/msg149855.html)

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@29131 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Uwe Stöhr 2009-04-06 23:58:42 +00:00
parent 3e341497a8
commit 8225a56dfe
5 changed files with 60 additions and 75 deletions
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3
lib/ui/stdtoolbars.inc
View File

@ -310,7 +310,8 @@ ToolbarSet
Item "Text fraction \\tfrac" "math-insert \tfrac"
Item "Display fraction \\dfrac" "math-insert \dfrac"
Item "Continued fraction \\cfrac" "math-insert \cfrac"
Item "Continued fraction (aligned) \\cfrac" "math-insert \cfracthree"
Item "Continued fraction (left) \\cfrac" "math-insert \cfracleft"
Item "Continued fraction (right) \\cfrac" "math-insert \cfracright"
Item "Binomial \\binom" "math-insert \binom"
Item "Text binomial \\tbinom" "math-insert \tbinom"
Item "Display binomial \\dbinom" "math-insert \dbinom"

102
src/mathed/InsetMathFrac.cpp
View File

@ -85,8 +85,7 @@ InsetMathFrac const * InsetMathFrac::asFracInset() const
bool InsetMathFrac::idxForward(Cursor & cur) const
{
InsetMath::idx_type target = 0;
if (kind_ == UNIT || (kind_ == UNITFRAC && nargs() == 3)
|| (kind_ == CFRAC && nargs() == 3)) {
if (kind_ == UNIT || (kind_ == UNITFRAC && nargs() == 3)) {
if (nargs() == 3)
target = 0;
else if (nargs() == 2)
@ -104,8 +103,7 @@ bool InsetMathFrac::idxForward(Cursor & cur) const
bool InsetMathFrac::idxBackward(Cursor & cur) const
{
InsetMath::idx_type target = 0;
if (kind_ == UNIT || (kind_ == UNITFRAC && nargs() == 3)
|| (kind_ == CFRAC && nargs() == 3)) {
if (kind_ == UNIT || (kind_ == UNITFRAC && nargs() == 3)) {
if (nargs() == 3)
target = 2;
else if (nargs() == 2)
@ -159,29 +157,15 @@ void InsetMathFrac::metrics(MetricsInfo & mi, Dimension & dim) const
dim.wid = dim0.width() + dim1.wid + 5;
dim.asc = dim0.height() + 5;
dim.des = dim1.height() - 5;
} else if (kind_ == CFRAC) {
if (nargs() == 2) {
// cfrac is always in display size
StyleChanger dummy2(mi.base, LM_ST_DISPLAY);
cell(0).metrics(mi, dim0);
cell(1).metrics(mi, dim1);
dim.wid = max(dim0.wid, dim1.wid) + 2;
dim.asc = dim0.height() + 2 + 5;
dim.des = dim1.height() + 2 - 5;
} else {
// cfrac is always in display size
StyleChanger dummy2(mi.base, LM_ST_DISPLAY);
// use text font for the optional argument
FontSetChanger dummy3(mi.base, "textnormal");
cell(2).metrics(mi, dim2);
// return to math font
FontSetChanger dummy4(mi.base, "mathnormal");
cell(0).metrics(mi, dim0);
cell(1).metrics(mi, dim1);
dim.wid = 2 + max(dim0.wid, dim1.wid);
dim.asc = dim0.height() + 2 + 5;
dim.des = dim1.height() + 2 - 5;
}
} else if (kind_ == CFRAC || kind_ == CFRACLEFT
|| kind_ == CFRACRIGHT) {
// cfrac is always in display size
StyleChanger dummy2(mi.base, LM_ST_DISPLAY);
cell(0).metrics(mi, dim0);
cell(1).metrics(mi, dim1);
dim.wid = max(dim0.wid, dim1.wid) + 2;
dim.asc = dim0.height() + 2 + 5;
dim.des = dim1.height() + 2 - 5;
} else if (kind_ == UNITFRAC) {
ShapeChanger dummy2(mi.base.font, UP_SHAPE);
dim.wid = dim0.width() + dim1.wid + 5;
@ -254,36 +238,21 @@ void InsetMathFrac::draw(PainterInfo & pi, int x, int y) const
y - dim0.des - 5);
cell(1).draw(pi, x + dim0.width() + 5,
y + dim1.asc / 2);
} else if (kind_ == CFRAC) {
if (nargs() == 2) {
// cfrac is always in display size
StyleChanger dummy2(pi.base, LM_ST_DISPLAY);
Dimension const dim0 = cell(0).dimension(*pi.base.bv);
Dimension const dim1 = cell(1).dimension(*pi.base.bv);
int m = x + dim.wid / 2;
} else if (kind_ == CFRAC || kind_ == CFRACLEFT
|| kind_ == CFRACRIGHT) {
// cfrac is always in display size
StyleChanger dummy2(pi.base, LM_ST_DISPLAY);
Dimension const dim0 = cell(0).dimension(*pi.base.bv);
Dimension const dim1 = cell(1).dimension(*pi.base.bv);
int m = x + dim.wid / 2;
if (kind_ == CFRAC)
cell(0).draw(pi, m - dim0.wid / 2, y - dim0.des - 2 - 5);
cell(1).draw(pi, m - dim1.wid / 2, y + dim1.asc + 2 - 5);
} else {
// cfrac is always in display size
StyleChanger dummy2(pi.base, LM_ST_DISPLAY);
// use text font for the optional argument
FontSetChanger dummy3(pi.base, "textnormal");
Dimension const dim2 = cell(2).dimension(*pi.base.bv);
int w = mathed_char_width(pi.base.font, '[');
drawStrBlack(pi, x, y, from_ascii("["));
x += w;
cell(2).draw(pi, x + 1, y);
x += dim2.wid;
drawStrBlack(pi, x, y, from_ascii("]"));
x += w;
// return to math font
FontSetChanger dummy4(pi.base, "mathnormal");
Dimension const dim0 = cell(0).dimension(*pi.base.bv);
Dimension const dim1 = cell(1).dimension(*pi.base.bv);
int m = x + dim.wid / 2;
cell(0).draw(pi, m - dim0.wid / 2, y - dim0.des - 2 - 5);
cell(1).draw(pi, m - dim1.wid / 2, y + dim1.asc + 2 - 5);
}
else if (kind_ == CFRACLEFT)
cell(0).draw(pi, x + 2, y - dim0.des - 2 - 5);
else if (kind_ == CFRACRIGHT)
cell(0).draw(pi, x + dim.wid - dim0.wid - 2,
y - dim0.des - 2 - 5);
cell(1).draw(pi, m - dim1.wid / 2, y + dim1.asc + 2 - 5);
} else if (kind_ == DFRAC) {
// dfrac is in always in display size
StyleChanger dummy2(pi.base, LM_ST_DISPLAY);
@ -317,7 +286,8 @@ void InsetMathFrac::draw(PainterInfo & pi, int x, int y) const
xx + dim0.wid + 5,
y - dim.asc + 2, Color_math);
}
if (kind_ == FRAC || kind_ == CFRAC || kind_ == DFRAC
if (kind_ == FRAC || kind_ == CFRAC || kind_ == CFRACLEFT
|| kind_ == CFRACRIGHT || kind_ == DFRAC
|| kind_ == TFRAC || kind_ == OVER)
pi.pain.line(x + 1, y - 5,
x + dim.wid - 2, y - 5, Color_math);
@ -356,6 +326,8 @@ void InsetMathFrac::write(WriteStream & os) const
MathEnsurer ensurer(os);
switch (kind_) {
case ATOP:
// \\atop is only for compatibility, \\binom is the
// LaTeX2e successor
os << '{' << cell(0) << "\\atop " << cell(1) << '}';
break;
case OVER:
@ -367,11 +339,6 @@ void InsetMathFrac::write(WriteStream & os) const
case TFRAC:
case NICEFRAC:
case CFRAC:
if (nargs() == 2)
InsetMathNest::write(os);
else
os << "\\cfrac[" << cell(2) << "]{" << cell(0) << "}{" << cell(1) << '}';
break;
case UNITFRAC:
if (nargs() == 2)
InsetMathNest::write(os);
@ -384,6 +351,12 @@ void InsetMathFrac::write(WriteStream & os) const
else
os << "\\unit{" << cell(0) << '}';
break;
case CFRACLEFT:
os << "\\cfrac[l]{" << cell(0) << "}{" << cell(1) << '}';
break;
case CFRACRIGHT:
os << "\\cfrac[r]{" << cell(0) << "}{" << cell(1) << '}';
break;
}
}
@ -394,6 +367,8 @@ docstring InsetMathFrac::name() const
case FRAC:
return from_ascii("frac");
case CFRAC:
case CFRACLEFT:
case CFRACRIGHT:
return from_ascii("cfrac");
case DFRAC:
return from_ascii("dfrac");
@ -459,7 +434,8 @@ void InsetMathFrac::validate(LaTeXFeatures & features) const
{
if (kind_ == NICEFRAC || kind_ == UNITFRAC || kind_ == UNIT)
features.require("units");
if (kind_ == CFRAC || kind_ == DFRAC || kind_ == TFRAC)
if (kind_ == CFRAC || kind_ == CFRACLEFT || kind_ == CFRACRIGHT
|| kind_ == DFRAC || kind_ == TFRAC)
features.require("amsmath");
InsetMathNest::validate(features);
}

2
src/mathed/InsetMathFrac.h
View File

@ -41,6 +41,8 @@ public:
enum Kind {
FRAC,
CFRAC,
CFRACLEFT,
CFRACRIGHT,
DFRAC,
TFRAC,
OVER,

6
src/mathed/MathFactory.cpp
View File

@ -441,8 +441,10 @@ MathAtom createInsetMath(docstring const & s)
return MathAtom(new InsetMathFrac(InsetMathFrac::UNIT, 1));
if (s == "unittwo")
return MathAtom(new InsetMathFrac(InsetMathFrac::UNIT));
if (s == "cfracthree")
return MathAtom(new InsetMathFrac(InsetMathFrac::CFRAC, 3));
if (s == "cfracleft")
return MathAtom(new InsetMathFrac(InsetMathFrac::CFRACLEFT));
if (s == "cfracright")
return MathAtom(new InsetMathFrac(InsetMathFrac::CFRACRIGHT));
//if (s == "infer")
// return MathAtom(new MathInferInset);
if (s == "atop")

22
src/mathed/MathParser.cpp
View File

@ -1320,15 +1320,19 @@ bool Parser::parse1(InsetMathGrid & grid, unsigned flags,
}
else if (t.cs() == "cfrac") {
// Here allowed formats are \cfrac[pos]{num}{denom}
MathData ar;
parse(ar, FLAG_OPTION, mode);
if (ar.size()) {
cell->push_back(MathAtom(new InsetMathFrac(InsetMathFrac::CFRAC, 3)));
cell->back().nucleus()->cell(2) = ar;
} else {
cell->push_back(MathAtom(new InsetMathFrac(InsetMathFrac::CFRAC)));
}
// allowed formats are \cfrac[pos]{num}{denom}
docstring const arg = getArg('[', ']');
//lyxerr << "got so far: '" << arg << "'" << endl;
if (arg == "l")
cell->push_back(MathAtom(new InsetMathFrac(InsetMathFrac::CFRACLEFT)));
else if (arg == "r")
cell->push_back(MathAtom(new InsetMathFrac(InsetMathFrac::CFRACRIGHT)));
else if (arg.empty() || arg == "c")
cell->push_back(MathAtom(new InsetMathFrac(InsetMathFrac::CFRAC)));
else {
error("found invalid optional argument");
break;
}
parse(cell->back().nucleus()->cell(0), FLAG_ITEM, mode);
parse(cell->back().nucleus()->cell(1), FLAG_ITEM, mode);
}