From e8631bf7ed277b4eaf6bebc7d9d170e558be6226 Mon Sep 17 00:00:00 2001
From: Richard Heck <rgheck@comcast.net>
Date: Tue, 27 Oct 2009 14:33:01 +0000
Subject: [PATCH] Default CSS for InsetLayout.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@31771 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/insets/InsetLayout.cpp | 69 ++++++++++++++++++++++++++++++++++++++
 src/insets/InsetLayout.h   | 28 +++++++++++++---
 2 files changed, 92 insertions(+), 5 deletions(-)

diff --git a/src/insets/InsetLayout.cpp b/src/insets/InsetLayout.cpp
index 9534aeb3a7..fd1067d767 100644
--- a/src/insets/InsetLayout.cpp
+++ b/src/insets/InsetLayout.cpp
@@ -35,6 +35,7 @@ InsetLayout::InsetLayout() :
 	labelstring_(from_ascii("UNDEFINED")), decoration_(DEFAULT),
 	latextype_(NOLATEXTYPE), font_(sane_font), 
 	labelfont_(sane_font), bgcolor_(Color_error), 
+	htmlforcecss_ (false), htmlisblock_(true),
 	multipar_(false), custompars_(true), forceplain_(false), 
 	passthru_(false), needprotect_(false), freespacing_(false), 
 	keepempty_(false), forceltr_(false), intoc_(false)
@@ -84,6 +85,7 @@ bool InsetLayout::read(Lexer & lex, TextClass const & tclass)
 		IL_FREESPACING,
 		IL_HTMLTAG,
 		IL_HTMLATTR,
+		IL_HTMLFORCECSS,
 		IL_HTMLINNERTAG,
 		IL_HTMLINNERATTR,
 		IL_HTMLISBLOCK,
@@ -119,6 +121,7 @@ bool InsetLayout::read(Lexer & lex, TextClass const & tclass)
 		{ "forceplain", IL_FORCEPLAIN },
 		{ "freespacing", IL_FREESPACING },
 		{ "htmlattr", IL_HTMLATTR },
+		{ "htmlforcecss", IL_HTMLFORCECSS },
 		{ "htmlinnerattr", IL_HTMLINNERATTR},
 		{ "htmlinnertag", IL_HTMLINNERTAG},
 		{ "htmlisblock", IL_HTMLISBLOCK},
@@ -285,6 +288,9 @@ bool InsetLayout::read(Lexer & lex, TextClass const & tclass)
 		case IL_HTMLATTR:
 			lex >> htmlattr_;
 			break;
+		case IL_HTMLFORCECSS:
+			lex >> htmlforcecss_;
+			break;
 		case IL_HTMLINNERTAG:
 			lex >> htmlinnertag_;
 			break;
@@ -345,4 +351,67 @@ InsetLayout::InsetLyXType translateLyXType(std::string const & str)
 	return InsetLayout::NOLYXTYPE;
 }
 
+
+string InsetLayout::defaultCSSClass() const
+{ 
+	if (!defaultcssclass_.empty())
+		return defaultcssclass_;
+	docstring d;
+	docstring::const_iterator it = name().begin();
+	docstring::const_iterator en = name().end();
+	for (; it != en; ++it) {
+		if (!isalpha(*it))
+			continue;
+		if (islower(*it))
+			d += *it;
+		else 
+			d += support::lowercase(*it);
+	}
+	// are there other characters we need to remove?
+	defaultcssclass_ = to_utf8(d);
+	return defaultcssclass_;
+}
+
+
+void InsetLayout::makeDefaultCSS() const
+{
+#ifdef TEX2LYX
+	// tex2lyx does not have FontInfo::asCSS()
+	return;
+#else
+	if (!htmldefaultstyle_.empty()) 
+		return;
+	if (!htmltag_.empty()) {
+		docstring const mainfontCSS = font_.asCSS();
+		if (!mainfontCSS.empty())
+			htmldefaultstyle_ = 
+					from_ascii(htmltag() + "." + defaultCSSClass() + " {\n") +
+					mainfontCSS + from_ascii("\n}\n");
+	}
+	/* 
+	At present, we do not have default tags, etc, for the label.
+	if (labelfont_ == font_)
+			return;
+	docstring const labelfontCSS = labelfont_.asCSS();
+	if (!labelfontCSS.empty())
+		htmldefaultstyle_ +=
+.				from_ascii(htmllabeltag() + "." + defaultCSSLabelClass() + " {\n") +
+				labelfontCSS + from_ascii("\n}\n");
+	*/
+#endif
+}
+
+docstring InsetLayout::htmlstyle() const 
+{ 
+	if (!htmlstyle_.empty() && !htmlforcecss_)
+		return htmlstyle_;
+	if (htmldefaultstyle_.empty()) 
+		makeDefaultCSS();
+	docstring retval = htmldefaultstyle_;
+	if (!htmlstyle_.empty())
+		retval += '\n' + htmlstyle_;
+	return retval;
+}
+
+
 } //namespace lyx
diff --git a/src/insets/InsetLayout.h b/src/insets/InsetLayout.h
index ccc1c46307..6ebb916082 100644
--- a/src/insets/InsetLayout.h
+++ b/src/insets/InsetLayout.h
@@ -93,7 +93,7 @@ public:
 	///
 	std::string const & htmllabel() const { return htmllabel_; }
 	/// 
-	docstring htmlstyle() const { return htmlstyle_; }
+	docstring htmlstyle() const;
 	/// 
 	docstring htmlpreamble() const { return htmlpreamble_; }
 	///
@@ -118,7 +118,14 @@ public:
 	bool forceLTR() const { return forceltr_; };
 	///
 	bool isInToc() const { return intoc_; };
+	///
 private:
+	///
+	void makeDefaultCSS() const;
+	///
+	std::string defaultCSSClass() const;
+	///
+	std::string defaultCSSLabelClass() const { return defaultCSSClass() + "_label"; }
 	///
 	docstring name_;
 	/**
@@ -147,20 +154,31 @@ private:
 	docstring counter_;
 	///
 	docstring preamble_;
-	/// The tag enclosing all the material in this inset.
+	/// The tag enclosing all the material in this inset. Default is none.
 	std::string htmltag_;
-	/// Additional attributes for inclusion with the start tag.
+	/// Additional attributes for inclusion with the start tag. Default (if
+	/// a tag is provided) is: class="name".
 	std::string htmlattr_;
-	/// Tag for individual paragraphs in the inset.
+	/// Tag for individual paragraphs in the inset. Default is none.
 	std::string htmlinnertag_;
-	/// Attributes for that tag.
+	/// Attributes for that tag. Default (if a tag is provided) is: 
+	/// class="name_inner".
 	std::string htmlinnerattr_;
 	/// A label for this environment, possibly including a reference
 	/// to a counter. E.g., for footnote, it might be:
 	///    <span class='notenum'>\arabic{footnote}</span>
+	/// No default.
+	/// FIXME Could we get this from the layout?
 	std::string htmllabel_;
 	/// CSS associated with this inset.
 	docstring htmlstyle_;
+	/// Cache for default CSS info for this inset.
+	mutable docstring htmldefaultstyle_;
+	/// 
+	mutable std::string defaultcssclass_;
+	/// Whether to force generation of default CSS even if some is given.
+	/// False by default.
+	bool htmlforcecss_;
 	/// Additional material for the header.
 	docstring htmlpreamble_;
 	/// Whether this inset represents a "block" of material, i.e., a set