From: Jean-Marc Lasgouttes <lasgouttes@lyx.org>
Date: Thu, 12 Jan 2017 09:27:41 +0000 (+0100)
Subject: Implement mathClass() for \big and friends
X-Git-Tag: 2.3.0alpha1~490^2~2
X-Git-Url: https://git.lyx.org/gitweb/?a=commitdiff_plain;h=4cea47d1eb082ed2e957cfe381fe4cdfd951453e;p=features.git

Implement mathClass() for \big and friends

The information here is obtained by reading LaTeX sources.
---

diff --git a/src/mathed/InsetMathBig.cpp b/src/mathed/InsetMathBig.cpp
index eeaf96514b..889f8d4f97 100644
--- a/src/mathed/InsetMathBig.cpp
+++ b/src/mathed/InsetMathBig.cpp
@@ -39,6 +39,25 @@ docstring InsetMathBig::name() const
 }
 
 
+MathClass InsetMathBig::mathClass() const
+{
+	/* The class of the delimiter depends on the type (l, m, r, nothing).
+	 * For example, the definition of \bigl in LaTeX sources is
+	 * \def\bigl{\mathopen\big}
+	 */
+	switch(name_.back()) {
+	case 'l':
+		return MC_OPEN;
+	case 'm':
+		return MC_REL;
+	case 'r':
+		return MC_CLOSE;
+	default:
+		return MC_ORD;
+	}
+}
+
+
 Inset * InsetMathBig::clone() const
 {
 	return new InsetMathBig(*this);
@@ -49,9 +68,9 @@ InsetMathBig::size_type InsetMathBig::size() const
 {
 	// order: big Big bigg Bigg biggg Biggg
 	//        0   1   2    3    4     5
-	char_type const c = name_[name_.size() - 1];
+	char_type const c = name_.back();
 	int const base_size = (c == 'l' || c == 'm' || c == 'r') ? 4 : 3;
-	return name_[0] == 'B' ?
+	return name_.front() == 'B' ?
 		2 * (name_.size() - base_size) + 1:
 		2 * (name_.size() - base_size);
 }
diff --git a/src/mathed/InsetMathBig.h b/src/mathed/InsetMathBig.h
index 996a30a39d..83010a9260 100644
--- a/src/mathed/InsetMathBig.h
+++ b/src/mathed/InsetMathBig.h
@@ -24,6 +24,8 @@ public:
 	InsetMathBig(docstring const & name, docstring const & delim);
 	///
 	docstring name() const;
+	/// class is different for l(eft), r(ight) and m(iddle)
+	MathClass mathClass() const;
 	///
 	void metrics(MetricsInfo & mi, Dimension & dim) const;
 	///