Fix bug 5802 (http://bugzilla.lyx.org/show_bug.cgi?id=5802)

[lyx.git] / src / mathed / InsetMathFrac.cpp

diff --git a/src/mathed/InsetMathFrac.cpp b/src/mathed/InsetMathFrac.cpp
index ac2d894e091c118f82564876dcce950ef007bca3..558bbcddf6304e5416598edba9ed7bb3b6aca65a 100644 (file)
--- a/src/mathed/InsetMathFrac.cpp
+++ b/src/mathed/InsetMathFrac.cpp
@@ -4,7 +4,8 @@
  * Licence details can be found in the file COPYING.
  *
  * \author Alejandro Aguilar Sierra
- * \author André Pönitz
+ * \author André Pönitz
+ * \author Uwe Stöhr
  *
  * Full author contact details are available in file CREDITS.
  */
@@ -265,6 +266,7 @@ void InsetMathFrac::drawT(TextPainter & /*pain*/, int /*x*/, int /*y*/) const
 
 void InsetMathFrac::write(WriteStream & os) const
 {
+       MathEnsurer ensurer(os);
        switch (kind_) {
        case ATOP:
                os << '{' << cell(0) << "\\atop " << cell(1) << '}';
@@ -465,6 +467,62 @@ void InsetMathTFrac::validate(LaTeXFeatures & features) const
 }
 
 
+/////////////////////////////////////////////////////////////////////
+//
+// InsetMathCFrac
+//
+/////////////////////////////////////////////////////////////////////
+
+
+Inset * InsetMathCFrac::clone() const
+{
+       return new InsetMathCFrac(*this);
+}
+
+
+void InsetMathCFrac::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 InsetMathCFrac::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 InsetMathCFrac::name() const
+{
+       return from_ascii("cfrac");
+}
+
+
+void InsetMathCFrac::mathmlize(MathStream & os) const
+{
+       os << MTag("mcfrac") << cell(0) << cell(1) << ETag("mcfrac");
+}
+
+
+void InsetMathCFrac::validate(LaTeXFeatures & features) const
+{
+       features.require("amsmath");
+       InsetMathNest::validate(features);
+}
+
+
 /////////////////////////////////////////////////////////////////////
 //
 // InsetMathBinom
@@ -535,6 +593,7 @@ bool InsetMathBinom::extraBraces() const
 
 void InsetMathBinom::write(WriteStream & os) const
 {
+       MathEnsurer ensurer(os);
        switch (kind_) {
        case BINOM:
                os << "\\binom{" << cell(0) << "}{" << cell(1) << '}';
@@ -560,10 +619,9 @@ void InsetMathBinom::normalize(NormalStream & os) const
 
 void InsetMathBinom::validate(LaTeXFeatures & features) const
 {
-       if (kind_ == BINOM) {
+       if (kind_ == BINOM)
                features.require("binom");
-               InsetMathNest::validate(features);
-       }
+       InsetMathNest::validate(features);
 }