From f5bcb24da2821868ae6ce90fff5a2039eee3fd19 Mon Sep 17 00:00:00 2001
From: Richard Heck <rgheck@comcast.net>
Date: Tue, 30 Mar 2010 01:31:25 +0000
Subject: [PATCH] HTML for scripts.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@33944 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/mathed/InsetMathScript.cpp | 34 ++++++++++++++++++++++++++++++++++
 src/mathed/InsetMathScript.h   |  7 +++++--
 2 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/src/mathed/InsetMathScript.cpp b/src/mathed/InsetMathScript.cpp
index 1af0e57345..e637e55b8c 100644
--- a/src/mathed/InsetMathScript.cpp
+++ b/src/mathed/InsetMathScript.cpp
@@ -17,6 +17,7 @@
 #include "InsetMathFont.h"
 #include "InsetMathScript.h"
 #include "InsetMathSymbol.h"
+#include "LaTeXFeatures.h"
 #include "MathData.h"
 #include "MathStream.h"
 #include "MathSupport.h"
@@ -644,6 +645,26 @@ void InsetMathScript::mathmlize(MathStream & os) const
 }
 
 
+void InsetMathScript::htmlize(HtmlStream & os) const
+{
+	bool d = hasDown() && down().size();
+	bool u = hasUp() && up().size();
+
+	if (nuc().size())
+		os << nuc();
+
+	if (u && d)
+		os << MTag("span", "class='scripts'")
+			 << MTag("span", "class='sup'") << up() << ETag("span")
+			 << MTag("span", "class='sub'") << down() << ETag("span")
+			 << ETag("span");
+	else if (u)
+		os << MTag("sup", "class='math'") << up() << ETag("sup");
+	else if (d)
+		os << MTag("sub", "class='math'") << down() << ETag("sub");
+}
+
+
 void InsetMathScript::octave(OctaveStream & os) const
 {
 	if (nuc().size())
@@ -751,4 +772,17 @@ void InsetMathScript::doDispatch(Cursor & cur, FuncRequest & cmd)
 }
 
 
+// the idea for dual scripts came from the eLyXer code
+void InsetMathScript::validate(LaTeXFeatures & features) const
+{
+	if (features.runparams().flavor == OutputParams::HTML)
+		features.addPreambleSnippet("<style type=\"text/css\">\n"
+			"span.scripts{display: inline-block; vertical-align: middle; text-align:center; font-size: 75%;}\n"
+			"span.sup{display: block;}\n"
+			"span.sub{display: block;}\n"
+			"sub.math{font-size: 75%;}\n"
+			"sup.math{font-size: 75%;}\n"
+			"</style>");
+}
+
 } // namespace lyx
diff --git a/src/mathed/InsetMathScript.h b/src/mathed/InsetMathScript.h
index 569bc79f35..ecdda3b5a7 100644
--- a/src/mathed/InsetMathScript.h
+++ b/src/mathed/InsetMathScript.h
@@ -60,8 +60,10 @@ public:
 	void maple(MapleStream &) const;
 	/// write content as something readable by Mathematica
 	void mathematica(MathematicaStream &) const;
-	/// write content as something resembling MathML
+	/// write content as MathML
 	void mathmlize(MathStream &) const;
+	/// write content as HTML
+	void htmlize(HtmlStream &) const;
 	/// write content as something readable by Octave
 	void octave(OctaveStream &) const;
 
@@ -104,7 +106,8 @@ public:
 	void infoize2(odocstream & os) const;
 	///
 	InsetCode lyxCode() const { return MATH_SCRIPT_CODE; }
-
+	///
+	void validate(LaTeXFeatures &features) const;
 protected:
 	virtual void doDispatch(Cursor & cur, FuncRequest & cmd);
 private: