Fix right and left layout alignment (in workarea) with RTL

Fixes: #11606

src/Paragraph.cpp

@@ -1983,15 +1983,29 @@ depth_type Paragraph::getMaxDepthAfter() const
 }
 
 
-LyXAlignment Paragraph::getAlign() const
+LyXAlignment Paragraph::getAlign(BufferParams const & bparams) const
 {
 	if (d->params_.align() == LYX_ALIGN_LAYOUT)
-		return d->layout_->align;
+		return getDefaultAlign(bparams);
 	else
 		return d->params_.align();
 }
 
 
+LyXAlignment Paragraph::getDefaultAlign(BufferParams const & bparams) const
+{
+	LyXAlignment res = layout().align;
+	if (isRTL(bparams)) {
+		// Swap sides
+		if (res == LYX_ALIGN_LEFT)
+			res = LYX_ALIGN_RIGHT;
+		else if  (res == LYX_ALIGN_RIGHT)
+			res = LYX_ALIGN_LEFT;
+	}
+	return res;
+}
+
+
 docstring const & Paragraph::labelString() const
 {
 	return d->params_.labelString();

src/Paragraph.h

@@ -312,7 +312,9 @@ public:
 	/// Set label width string.
 	void setLabelWidthString(docstring const & s);
 	/// Actual paragraph alignment used
-	LyXAlignment getAlign() const;
+	LyXAlignment getAlign(BufferParams const &) const;
+	/// Default paragraph alignment as determined by layout
+	LyXAlignment getDefaultAlign(BufferParams const &) const;
 	/// The nesting depth of a paragraph
 	depth_type getDepth() const;
 	/// The maximal possible depth of a paragraph after this one

src/TextMetrics.cpp

@@ -595,7 +595,7 @@ bool TextMetrics::redoParagraph(pit_type const pit, bool const align_rows)
 
 LyXAlignment TextMetrics::getAlign(Paragraph const & par, Row const & row) const
 {
-	LyXAlignment align = par.getAlign();
+	LyXAlignment align = par.getAlign(bv_->buffer().params());
 
 	// handle alignment inside tabular cells
 	Inset const & owner = text_->inset();
@@ -1755,7 +1755,7 @@ int TextMetrics::leftMargin(pit_type const pit, pos_type const pos) const
 	if (!par.params().leftIndent().zero())
 		l_margin += par.params().leftIndent().inPixels(max_width_, lfm.em());
 
-	LyXAlignment align = par.getAlign();
+	LyXAlignment align = par.getAlign(bv_->buffer().params());
 
 	// set the correct parindent
 	if (pos == 0

src/frontends/qt4/GuiParagraph.cpp

@@ -125,7 +125,7 @@ void GuiParagraph::checkAlignmentRadioButtons()
 		alignDefaultRB->setText(alignDefaultLabel_);
 	else
 		alignDefaultRB->setText(alignDefaultLabel_ + " ("
-			+ labelMap_[alignDefault()] + ")");
+			+ labelMap_[bufferview()->cursor().innerParagraph().getDefaultAlign(buffer().params())] + ")");
 }
 
 
@@ -372,12 +372,6 @@ LyXAlignment GuiParagraph::alignPossible() const
 }
 
 
-LyXAlignment GuiParagraph::alignDefault() const
-{
-	return bufferview()->cursor().innerParagraph().layout().align;
-}
-
-
 bool GuiParagraph::hasLabelwidth() const
 {
 	Layout layout = bufferview()->cursor().innerParagraph().layout();

src/frontends/qt4/GuiParagraph.h

@@ -60,8 +60,6 @@ private:
 	bool hasLabelwidth() const;
 	///
 	LyXAlignment alignPossible() const;
-	///
-	LyXAlignment alignDefault() const;
 
 private Q_SLOTS:
 	///

src/output_latex.cpp

@@ -1402,20 +1402,20 @@ void TeXOnePar(Buffer const & buf,
 			     && !text.inset().getLayout().parbreakIgnored()
 			     && style.latextype != LATEX_ITEM_ENVIRONMENT
 			     && style.latextype != LATEX_LIST_ENVIRONMENT
-			     && style.align == par.getAlign()
+			     && style.align == par.getAlign(bparams)
 			     && nextpar->getDepth() == par.getDepth()
-			     && nextpar->getAlign() == par.getAlign())
+			     && nextpar->getAlign(bparams) == par.getAlign(bparams))
 			    || (!next_layout.isEnvironment()
 				&& nextpar->getDepth() > par.getDepth()
-				&& nextpar->getAlign() == next_layout.align)
+				&& nextpar->getAlign(bparams) == next_layout.align)
 			    || (!style.isEnvironment()
 				&& next_layout.latextype == LATEX_ENVIRONMENT
 				&& nextpar->getDepth() < par.getDepth())
 			    || (style.isCommand()
 				&& !next_layout.isEnvironment()
-				&& style.align == par.getAlign()
+				&& style.align == par.getAlign(bparams)
-				&& next_layout.align == nextpar->getAlign())
+				&& next_layout.align == nextpar->getAlign(bparams))
-			    || (style.align != par.getAlign()
+			    || (style.align != par.getAlign(bparams)
 				&& tclass.isDefaultLayout(next_layout))) {
 				os << '\n';
 			}