X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Fmathed%2FInsetMathOverset.cpp;h=1958471558cf6dea735124fd3aca59f694dd6fd6;hb=30d3fcd640c180407a8a1db7679cca42eaa9e0c1;hp=6b49dce35c33abbfa0027a9735e91e49c26da805;hpb=f29db33e695d6cd8dd3dd33c62832ec681df2675;p=lyx.git

diff --git a/src/mathed/InsetMathOverset.cpp b/src/mathed/InsetMathOverset.cpp
index 6b49dce35c..1958471558 100644
--- a/src/mathed/InsetMathOverset.cpp
+++ b/src/mathed/InsetMathOverset.cpp
@@ -74,6 +74,8 @@ bool InsetMathOverset::idxLast(Cursor & cur) const
 void InsetMathOverset::write(WriteStream & os) const
 {
 	MathEnsurer ensurer(os);
+	if (os.fragile())
+		os << "\\protect";
 	os << "\\overset{" << cell(0) << "}{" << cell(1) << '}';
 }
 
@@ -90,9 +92,25 @@ void InsetMathOverset::mathmlize(MathStream & ms) const
 }
 
 
+void InsetMathOverset::htmlize(HtmlStream & os) const
+{
+	os << MTag("span", "class='overset'")
+		 << MTag("span", "class='top'") << cell(0) << ETag("span")
+		 << MTag("span") << cell(1) << ETag("span")
+		 << ETag("span");
+}
+
+
 void InsetMathOverset::validate(LaTeXFeatures & features) const
 {
-	features.require("amsmath");
+	if (features.runparams().isLaTeX())
+		features.require("amsmath");
+	else if (features.runparams().math_flavor == OutputParams::MathAsHTML)
+		features.addCSSSnippet(
+			"span.overset{display: inline-block; vertical-align: bottom; text-align:center;}\n"
+			"span.overset span {display: block;}\n"
+			"span.top{font-size: 66%;}");
+
 	InsetMathNest::validate(features);
 }