This implements selection of current cursor position (and main selection) \

in the view source panel

* Buffer.cpp (getSourceCode, writeLaTeXSource): fix sync between output and texrow
* frontends/controllers/ControlViewSource.{h,cpp} (getRows): new method to get the current selection in term of latex rows
* frontends/qt4/QViewSource.{h,cpp}: make a selection in the ViewSource widget



git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@19503 a592a061-630c-0410-9148-cb99ea01b6c8

src/Buffer.cpp

@@ -925,6 +925,7 @@ bool Buffer::makeLaTeXFile(FileName const & fname,
 
 	bool failed_export = false;
 	try {
+		texrow().reset();
 		writeLaTeXSource(ofs, original_path,
 		      runparams, output_preamble, output_body);
 	}
@@ -972,12 +973,8 @@ void Buffer::writeLaTeXSource(odocstream & os,
 	validate(features);
 	LYXERR(Debug::LATEX) << "  Buffer validation done." << endl;
 
-	texrow().reset();
-
 	// The starting paragraph of the coming rows is the
 	// first paragraph of the document. (Asger)
-	texrow().start(paragraphs().begin()->id(), 0);
-
 	if (output_preamble && runparams.nice) {
 		os << "%% LyX " << lyx_version << " created this file.  "
 			"For more info, see http://www.lyx.org/.\n"
@@ -1027,6 +1024,9 @@ void Buffer::writeLaTeXSource(odocstream & os,
 		os << "\\begin{document}\n";
 		texrow().newline();
 	} // output_preamble
+
+	texrow().start(paragraphs().begin()->id(), 0);
+	
 	LYXERR(Debug::INFO) << "preamble finished, now the body." << endl;
 
 	if (!lyxrc.language_auto_begin &&
@@ -1784,8 +1784,11 @@ void Buffer::getSourceCode(odocstream & os, pit_type par_begin,
 	// No side effect of file copying and image conversion
 	runparams.dryrun = true;
 
+	texrow().reset();
 	if (full_source) {
 		os << "% " << _("Preview source code") << "\n\n";
+		texrow().newline();
+		texrow().newline();
 		if (isLatex())
 			writeLaTeXSource(os, filePath(), runparams, true, true);
 		else {
@@ -1804,9 +1807,10 @@ void Buffer::getSourceCode(odocstream & os, pit_type par_begin,
 					convert<docstring>(par_begin),
 					convert<docstring>(par_end - 1))
 			   << "\n\n";
+		texrow().newline();
+		texrow().newline();
 		// output paragraphs
 		if (isLatex()) {
-			texrow().reset();
 			latexParagraphs(*this, paragraphs(), os, texrow(), runparams);
 		} else {
 			// DocBook

src/frontends/controllers/ControlViewSource.cpp

@@ -18,6 +18,7 @@
 #include "BufferView.h"
 #include "Buffer.h"
 #include "Cursor.h"
+#include "TexRow.h"
 #include <sstream>
 
 using std::string;
@@ -58,6 +59,20 @@ docstring const ControlViewSource::updateContent(bool fullSource)
 }
 
 
+std::pair<int, int> ControlViewSource::getRows() const
+{
+	BufferView const * view = kernel().bufferview();
+	CursorSlice beg = view->cursor().selectionBegin().bottom();
+	CursorSlice end = view->cursor().selectionEnd().bottom();
+
+	int begrow = view->buffer()->texrow().
+		getRowFromIdPos(beg.paragraph().id(), beg.pos());
+	int endrow = view->buffer()->texrow().
+		getRowFromIdPos(end.paragraph().id(), end.pos() + 1);
+	return std::make_pair(begrow, endrow);
+}
+
+
 void ControlViewSource::clearParams()
 {
 }

src/frontends/controllers/ControlViewSource.h

@@ -47,6 +47,9 @@ public:
 		\param fullSource get full source code
 	 */
 	docstring const updateContent(bool fullSource);
+	/** get the cursor position in the source code
+	 */
+	std::pair<int, int> getRows() const;
 };
 
 } // namespace frontend

src/frontends/qt4/QViewSource.cpp

@@ -61,6 +61,13 @@ void QViewSourceDialog::update()
 	if (autoUpdateCB->isChecked())
 		form_->update(viewFullSourceCB->isChecked());
 
+	int beg, end;
+	boost::tie(beg, end) = form_->getRows();
+	QTextCursor c = QTextCursor(viewSourceTV->document());
+	c.movePosition(QTextCursor::NextBlock, QTextCursor::MoveAnchor, beg);
+	c.select(QTextCursor::BlockUnderCursor);
+	c.movePosition(QTextCursor::NextBlock, QTextCursor::KeepAnchor, end - beg + 1);
+	viewSourceTV->setTextCursor(c);
 	QWidget::update();
 }