Backport fix for #7652, so that we show backends, not formats, in the

View>Source combo.

ANNOUNCE

@@ -33,6 +33,12 @@ http://www.lyx.org
 What's new in LyX 2.0.5
 =======================
 
+The View>Source widget now allows you to select the backend to display,
+e.g., LaTeX or XHTML, rather than the output format. The previous choice
+really made no sense: You didn't see a PDF there if you chose one of the
+PDF output formats, but rather LaTeX. This solves some long-standing issues
+with View>Source.
+
 
 What's new
 ==========

src/Buffer.cpp

@@ -3225,6 +3225,12 @@ void Buffer::getSourceCode(odocstream & os, string const format,
 		else if (runparams.flavor == OutputParams::HTML) {
 			XHTMLStream xs(os);
 			xhtmlParagraphs(text(), *this, xs, runparams);
+		} else if (runparams.flavor == OutputParams::TEXT) {
+			bool dummy;
+			// FIXME Handles only one paragraph, unlike the others.
+			// Probably should have some routine with a signature like them.
+			writePlaintextParagraph(*this,
+				text().paragraphs()[par_begin], os, runparams, dummy);
 		} else {
 			// latex or literate
 			otexstream ots(os, texrow);

src/BufferParams.cpp

@@ -2130,17 +2130,24 @@ bool BufferParams::isExportableFormat(string const & format) const
 vector<string> BufferParams::backends() const
 {
 	vector<string> v;
-	v.push_back(bufferFormat());
+	string const buffmt = bufferFormat();
+
 	// FIXME: Don't hardcode format names here, but use a flag
-	if (v.back() == "latex") {
-		v.push_back("pdflatex");
+	if (buffmt == "latex") {
+		if (!useNonTeXFonts) {
+			v.push_back("pdflatex");
+			v.push_back("latex");
+		}
 		v.push_back("luatex");
 		v.push_back("dviluatex");
 		v.push_back("xetex");
-	} else if (v.back() == "xetex") {
+	} else if (buffmt == "xetex") {
+		v.push_back("xetex");
 		v.push_back("luatex");
 		v.push_back("dviluatex");
-	}
+	} else
+		v.push_back(buffmt);
+
 	v.push_back("xhtml");
 	v.push_back("text");
 	v.push_back("lyx");
@@ -2162,6 +2169,8 @@ OutputParams::FLAVOR BufferParams::getOutputFlavor(string const format) const
 
 	if (dformat == "xhtml")
 		result = OutputParams::HTML;
+	else if (dformat == "text")
+		result = OutputParams::TEXT;
 	else {
 		// Try to determine flavor of default output format
 		vector<string> backs = backends();

src/BufferParams.h

@@ -176,7 +176,8 @@ public:
 	std::vector<Format const *> exportableFormats(bool only_viewable) const;
 	///
 	bool isExportableFormat(std::string const & format) const;
-	///
+	/// the backends appropriate for use with this document.
+	/// so, e.g., latex is excluded , if we're using non-TeX fonts
 	std::vector<std::string> backends() const;
 
 	/// List of included children (for includeonly)

src/frontends/qt4/GuiViewSource.cpp

@@ -197,19 +197,23 @@ void ViewSourceWidget::updateDefaultFormat()
 	outputFormatCO->addItem(qt_("Default"),
 				QVariant(QString("default")));
 
-	int index = 0;
-	typedef vector<Format const *> Formats;
-	Formats formats = bv_->buffer().params().exportableFormats(true);
-	Formats::const_iterator cit = formats.begin();
-	Formats::const_iterator end = formats.end();
-	for (; cit != end; ++cit) {
-		QString const fname = toqstr((*cit)->name());
-		outputFormatCO->addItem(qt_((*cit)->prettyname()),
-				QVariant(fname));
-		if (fname == view_format_)
-		    index = outputFormatCO->count() -1;
+	vector<string> tmp = bv_->buffer().params().backends();
+	vector<string>::const_iterator it = tmp.begin();
+	vector<string>::const_iterator en = tmp.end();
+	for (; it != en; ++it) {
+		string const format = *it;
+		Format const * fmt = formats.getFormat(format);
+		if (!fmt)
+			LYXERR0("Can't find format for backend " << format << "!");
+		else if (fmt->name() == "lyx")
+			// we can't presently display the LyX format itself
+			continue;
+
+		QString const pretty =
+			fmt ? qt_(fmt->prettyname()) : toqstr(format);
+		outputFormatCO->addItem(pretty, QVariant(toqstr(format)));
 	}
-	outputFormatCO->setCurrentIndex(index);
+
 	outputFormatCO->blockSignals(false);
 }
 

status.20x

@@ -36,6 +36,7 @@ What's new
 
 * USER INTERFACE
 
+- Show backends, not formats, in View>Source (bug #7652).
 
 
 * DOCUMENTATION AND LOCALIZATION