Attempt to fix #8137 (arrived at r40862).

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

diff --git a/src/mathed/InsetMathXArrow.cpp b/src/mathed/InsetMathXArrow.cpp
index d2b1199187fa9b77e0e2072c9849f0969c6ef116..44799bac2fed2f8ff9277ec1c0d8d55913e7585a 100644 (file)
--- a/src/mathed/InsetMathXArrow.cpp
+++ b/src/mathed/InsetMathXArrow.cpp
@@ -23,8 +23,8 @@ using namespace std;
 namespace lyx {
 
 
-InsetMathXArrow::InsetMathXArrow(docstring const & name)
-       : InsetMathFracBase(), name_(name)
+InsetMathXArrow::InsetMathXArrow(Buffer * buf, docstring const & name)
+       : InsetMathFracBase(buf), name_(name)
 {}
 
 
@@ -76,9 +76,36 @@ void InsetMathXArrow::normalize(NormalStream & os) const
 }
 
 
+void InsetMathXArrow::mathmlize(MathStream & ms) const
+{
+       char const * const arrow = name_ == "xleftarrow" 
+                       ? "←" : "→";
+       ms << "<munderover accent='false' accentunder='false'>"
+          << arrow << cell(1) << cell(0)
+          << "</munderover>";
+}
+
+
+void InsetMathXArrow::htmlize(HtmlStream & os) const
+{
+       char const * const arrow = name_ == "xleftarrow" 
+                       ? "&larr;" : "&rarr;";
+       os << MTag("span", "class='xarrow'")
+                << MTag("span", "class='xatop'") << cell(0) << ETag("span")
+                << MTag("span", "class='xabottom'") << arrow << ETag("span")
+                << ETag("span");
+}
+
+
 void InsetMathXArrow::validate(LaTeXFeatures & features) const
 {
        features.require("amsmath");
+       if (features.runparams().math_flavor == OutputParams::MathAsHTML)
+               // CSS adapted from eLyXer
+               features.addCSSSnippet(
+                       "span.xarrow{display: inline-block; vertical-align: middle; text-align:center;}\n"
+                       "span.xatop{display: block;}\n"
+                       "span.xabottom{display: block;}");
        InsetMathNest::validate(features);
 }