+ if (kind_ == NICEFRAC || kind_ == UNITFRAC || kind_ == UNIT)
+ features.require("units");
+ InsetMathNest::validate(features);
+}
+
+
+/////////////////////////////////////////////////////////////////////
+//
+// InsetMathDFrac
+//
+/////////////////////////////////////////////////////////////////////
+
+
+Inset * InsetMathDFrac::clone() const
+{
+ return new InsetMathDFrac(*this);
+}
+
+
+void InsetMathDFrac::metrics(MetricsInfo & mi, Dimension & dim) const
+{
+ Dimension dim0, dim1;
+ 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;
+}
+
+
+void InsetMathDFrac::draw(PainterInfo & pi, int x, int y) const
+{
+ Dimension const dim = dimension(*pi.base.bv);
+ 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);
+ pi.pain.line(x + 1, y - 5, x + dim.wid - 2, y - 5, Color_math);
+ setPosCache(pi, x, y);
+}
+
+
+docstring InsetMathDFrac::name() const
+{
+ return from_ascii("dfrac");
+}
+
+
+void InsetMathDFrac::mathmlize(MathStream & os) const
+{
+ os << MTag("mdfrac") << cell(0) << cell(1) << ETag("mdfrac");
+}
+
+
+void InsetMathDFrac::validate(LaTeXFeatures & features) const
+{
+ features.require("amsmath");
+ InsetMathNest::validate(features);
+}
+
+
+/////////////////////////////////////////////////////////////////////
+//
+// InsetMathTFrac
+//
+/////////////////////////////////////////////////////////////////////
+
+
+Inset * InsetMathTFrac::clone() const
+{
+ return new InsetMathTFrac(*this);
+}
+
+
+void InsetMathTFrac::metrics(MetricsInfo & mi, Dimension & dim) const
+{
+ StyleChanger dummy(mi.base, LM_ST_SCRIPT);
+ Dimension dim0;
+ cell(0).metrics(mi, dim0);
+ Dimension dim1;
+ cell(1).metrics(mi, dim1);
+ dim.wid = max(dim0.width(), dim1.width()) + 2;
+ dim.asc = dim0.height() + 2 + 5;
+ dim.des = dim1.height() + 2 - 5;
+}
+
+
+void InsetMathTFrac::draw(PainterInfo & pi, int x, int y) const
+{
+ StyleChanger dummy(pi.base, LM_ST_SCRIPT);
+ Dimension const dim = dimension(*pi.base.bv);
+ 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.width() / 2, y - dim0.descent() - 2 - 5);
+ cell(1).draw(pi, m - dim1.width() / 2, y + dim1.ascent() + 2 - 5);
+ pi.pain.line(x + 1, y - 5, x + dim.wid - 2, y - 5, Color_math);
+ setPosCache(pi, x, y);
+}
+
+
+docstring InsetMathTFrac::name() const
+{
+ return from_ascii("tfrac");
+}
+
+
+void InsetMathTFrac::mathmlize(MathStream & os) const
+{
+ os << MTag("mtfrac") << cell(0) << cell(1) << ETag("mtfrac");
+}
+
+
+void InsetMathTFrac::validate(LaTeXFeatures & features) const
+{
+ features.require("amsmath");
+ InsetMathNest::validate(features);
+}
+
+
+/////////////////////////////////////////////////////////////////////
+//
+// InsetMathBinom
+//
+/////////////////////////////////////////////////////////////////////
+
+
+InsetMathBinom::InsetMathBinom(Kind kind)
+ : kind_(kind)
+{}
+
+
+Inset * InsetMathBinom::clone() const
+{
+ return new InsetMathBinom(*this);
+}
+
+
+int InsetMathBinom::dw(int height) const
+{
+ int w = height / 5;
+ if (w > 15)
+ w = 15;
+ if (w < 6)
+ w = 6;
+ return w;
+}
+
+
+void InsetMathBinom::metrics(MetricsInfo & mi, Dimension & dim) const
+{
+ FracChanger dummy(mi.base);
+ Dimension dim0, dim1;
+ cell(0).metrics(mi, dim0);
+ cell(1).metrics(mi, dim1);
+ dim.asc = dim0.height() + 4 + 5;
+ dim.des = dim1.height() + 4 - 5;
+ dim.wid = max(dim0.width(), dim1.wid) + 2 * dw(dim.height()) + 4;
+ metricsMarkers2(dim);
+}
+
+
+void InsetMathBinom::draw(PainterInfo & pi, int x, int y) const
+{
+ Dimension const dim = dimension(*pi.base.bv);
+ Dimension const & dim0 = cell(0).dimension(*pi.base.bv);
+ Dimension const & dim1 = cell(1).dimension(*pi.base.bv);
+ docstring const bra = kind_ == BRACE ? from_ascii("{") :
+ kind_ == BRACK ? from_ascii("[") : from_ascii("(");
+ docstring const ket = kind_ == BRACE ? from_ascii("}") :
+ kind_ == BRACK ? from_ascii("]") : from_ascii(")");
+ int m = x + dim.width() / 2;
+ FracChanger dummy(pi.base);
+ cell(0).draw(pi, m - dim0.width() / 2, y - dim0.des - 3 - 5);
+ cell(1).draw(pi, m - dim1.wid / 2, y + dim1.asc + 3 - 5);
+ mathed_draw_deco(pi, x, y - dim.ascent(), dw(dim.height()), dim.height(), bra);
+ mathed_draw_deco(pi, x + dim.width() - dw(dim.height()), y - dim.ascent(),
+ dw(dim.height()), dim.height(), ket);
+ drawMarkers2(pi, x, y);
+}
+
+
+bool InsetMathBinom::extraBraces() const
+{
+ return kind_ == CHOOSE || kind_ == BRACE || kind_ == BRACK;
+}
+
+
+void InsetMathBinom::write(WriteStream & os) const
+{
+ switch (kind_) {
+ case BINOM:
+ os << "\\binom{" << cell(0) << "}{" << cell(1) << '}';
+ break;
+ case CHOOSE:
+ os << '{' << cell(0) << " \\choose " << cell(1) << '}';
+ break;
+ case BRACE:
+ os << '{' << cell(0) << " \\brace " << cell(1) << '}';
+ break;
+ case BRACK:
+ os << '{' << cell(0) << " \\brack " << cell(1) << '}';
+ break;
+ }
+}
+
+
+void InsetMathBinom::normalize(NormalStream & os) const
+{
+ os << "[binom " << cell(0) << ' ' << cell(1) << ']';
+}
+
+
+void InsetMathBinom::validate(LaTeXFeatures & features) const
+{
+ if (kind_ == BINOM) {
+ features.require("binom");
+ InsetMathNest::validate(features);
+ }
+}
+
+
+/////////////////////////////////////////////////////////////////////
+//
+// InsetMathDBinom
+//
+/////////////////////////////////////////////////////////////////////
+
+Inset * InsetMathDBinom::clone() const
+{
+ return new InsetMathDBinom(*this);
+}
+
+
+int InsetMathDBinom::dw(int height) const
+{
+ int w = height / 5;
+ if (w > 15)
+ w = 15;
+ if (w < 6)
+ w = 6;
+ return w;
+}
+
+
+void InsetMathDBinom::metrics(MetricsInfo & mi, Dimension & dim) const
+{
+ Dimension dim0, dim1;
+ cell(0).metrics(mi, dim0);
+ cell(1).metrics(mi, dim1);
+ dim.asc = dim0.height() + 4 + 5;
+ dim.des = dim1.height() + 4 - 5;
+ dim.wid = max(dim0.width(), dim1.wid) + 2 * dw(dim.height()) + 4;
+ metricsMarkers2(dim);
+}
+
+
+void InsetMathDBinom::draw(PainterInfo & pi, int x, int y) const
+{
+ Dimension const dim = dimension(*pi.base.bv);
+ Dimension const & dim0 = cell(0).dimension(*pi.base.bv);
+ Dimension const & dim1 = cell(1).dimension(*pi.base.bv);
+ int m = x + dim.width() / 2;
+ cell(0).draw(pi, m - dim0.width() / 2, y - dim0.des - 3 - 5);
+ cell(1).draw(pi, m - dim1.wid / 2, y + dim1.asc + 3 - 5);
+ mathed_draw_deco(pi, x, y - dim.ascent(), dw(dim.height()), dim.height(), from_ascii("("));
+ mathed_draw_deco(pi, x + dim.width() - dw(dim.height()), y - dim.ascent(),
+ dw(dim.height()), dim.height(), from_ascii(")"));
+ drawMarkers2(pi, x, y);
+}
+
+
+docstring InsetMathDBinom::name() const
+{
+ return from_ascii("dbinom");
+}
+
+void InsetMathDBinom::mathmlize(MathStream & os) const
+{
+ os << MTag("mdbinom") << cell(0) << cell(1) << ETag("mdbinom");
+}
+
+void InsetMathDBinom::validate(LaTeXFeatures & features) const
+{
+ features.require("amsmath");