Add support for \mathbin and friends

All they do is change the class of the elements that they contain.

src/Makefile.am

@@ -403,6 +403,7 @@ SOURCEFILESMATHED = \
 	mathed/InsetMathCancelto.cpp \
 	mathed/InsetMathCases.cpp \
 	mathed/InsetMathChar.cpp \
+	mathed/InsetMathClass.cpp \
 	mathed/InsetMathColor.cpp \
 	mathed/InsetMathComment.cpp \
 	mathed/InsetMathDecoration.cpp \
@@ -475,6 +476,7 @@ HEADERFILESMATHED = \
 	mathed/InsetMathCancelto.h \
 	mathed/InsetMathCases.h \
 	mathed/InsetMathChar.h \
+	mathed/InsetMathClass.h \
 	mathed/InsetMathColor.h \
 	mathed/InsetMathComment.h \
 	mathed/InsetMathDelim.h \

src/insets/InsetCode.h

@@ -235,6 +235,8 @@ enum InsetCode {
 	///
 	IPADECO_CODE,
 	///
+	MATH_CLASS_CODE,
+	///
 	INSET_CODE_SIZE
 };
 

src/mathed/InsetMathClass.cpp

@@ -0,0 +1,57 @@
+/**
+ * \file InsetMathClass.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 "InsetMathClass.h"
+
+#include "support/docstream.h"
+
+
+namespace lyx {
+
+InsetMathClass::InsetMathClass(Buffer * buf, MathClass mc)
+	: InsetMathNest(buf, 1), math_class_(mc)
+{}
+
+
+Inset * InsetMathClass::clone() const
+{
+	return new InsetMathClass(*this);
+}
+
+
+void InsetMathClass::metrics(MetricsInfo & mi, Dimension & dim) const
+{
+	cell(0).metrics(mi, dim);
+	metricsMarkers(dim);
+}
+
+
+void InsetMathClass::draw(PainterInfo & pi, int x, int y) const
+{
+	cell(0).draw(pi, x + 1, y);
+	drawMarkers(pi, x, y);
+}
+
+
+docstring InsetMathClass::name() const
+{
+	return class_to_string(math_class_);
+}
+
+
+void InsetMathClass::infoize(odocstream & os) const
+{
+	os << name() << " ";
+}
+
+
+} // namespace lyx

src/mathed/InsetMathClass.h

@@ -0,0 +1,50 @@
+// -*- C++ -*-
+/**
+ * \file InsetMathClass.h
+ * 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.
+ */
+
+#ifndef MATH_CLASSINSET_H
+#define MATH_CLASSINSET_H
+
+#include "MathClass.h"
+
+#include "InsetMathNest.h"
+
+
+namespace lyx {
+
+
+/// Support for LaTeX's \\mathxxx class-changing commands
+
+class InsetMathClass : public InsetMathNest {
+public:
+	///
+	InsetMathClass(Buffer * buf, MathClass);
+	///
+	docstring name() const;
+	///
+	MathClass mathClass() const { return math_class_; }
+	///
+	void metrics(MetricsInfo & mi, Dimension & dim) const;
+	///
+	void draw(PainterInfo & pi, int x, int y) const;
+	///
+	void infoize(odocstream & os) const;
+	///
+	InsetCode lyxCode() const { return MATH_CLASS_CODE; }
+
+private:
+	virtual Inset * clone() const;
+	///
+	MathClass math_class_;
+};
+
+
+} // namespace lyx
+#endif

src/mathed/MathFactory.cpp

@@ -19,6 +19,7 @@
 #include "InsetMathCancel.h"
 #include "InsetMathCancelto.h"
 #include "InsetMathCases.h"
+#include "InsetMathClass.h"
 #include "InsetMathColor.h"
 #include "InsetMathDecoration.h"
 #include "InsetMathDots.h"
@@ -662,10 +663,13 @@ MathAtom createInsetMath(docstring const & s, Buffer * buf)
 		return MathAtom(new InsetMathSpecialChar(s));
 	if (s == " ")
 		return MathAtom(new InsetMathSpace(" ", ""));
-
 	if (s == "regexp")
 		return MathAtom(new InsetMathHull(buf, hullRegexp));
 
+	MathClass const mc = string_to_class(s);
+	if (mc != MC_UNKNOWN)
+		return MathAtom(new InsetMathClass(buf, mc));
+
 	return MathAtom(new MathMacro(buf, s));
 }