X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FBidi.h;h=c406a7a2b52ed995ab5e5f8f0f8a1be2c5f8524f;hb=e100536d59170a1c99437ea22b6fd1bea864bcf0;hp=a961d93f2ebe1c1110abcac0faebe1f072421e1e;hpb=aabd481ab63fd50606dd0d984c0b407e4b27e6a7;p=lyx.git

diff --git a/src/Bidi.h b/src/Bidi.h
index a961d93f2e..c406a7a2b5 100644
--- a/src/Bidi.h
+++ b/src/Bidi.h
@@ -13,12 +13,17 @@
 #define BIDI_H
 
 #include "support/types.h"
+
 #include <vector>
 
+
+namespace lyx {
+
 class Buffer;
+class Cursor;
 class Paragraph;
 class Row;
-class LyXFont;
+class Font;
 
 
 /// bidi stuff
@@ -26,40 +31,56 @@ class Bidi {
 public:
 	///
 	bool isBoundary(Buffer const &, Paragraph const & par,
-			lyx::pos_type pos) const;
+			pos_type pos) const;
 	///
 	bool isBoundary(Buffer const &, Paragraph const & par,
-				lyx::pos_type pos, LyXFont const & font) const;
-	///
-	lyx::pos_type log2vis(lyx::pos_type pos) const;
+				pos_type pos, Font const & font) const;
+	/** Maps positions in the visual string to positions
+	 *  in logical string.
+	 */
+	pos_type log2vis(pos_type pos) const;
 	/** Maps positions in the logical string to positions
 	 *  in visual string.
 	 */
-	lyx::pos_type vis2log(lyx::pos_type pos) const;
-	///
-	lyx::pos_type level(lyx::pos_type pos) const;
-	///
-	bool inRange(lyx::pos_type pos) const;
-	/// same_direction?
+	pos_type vis2log(pos_type pos) const;
+	/* 
+	 * The text direction at logical position \param pos.
+	 * Possible values are
+	 *  0: left-to-right text
+	 *  1: right-to-left text
+	 *  2: left-to-right text in right-to-left language (aka numbers)
+	 */
+	pos_type level(pos_type pos) const;
+	/// Is logical position covered by this row?
+	bool inRange(pos_type pos) const;
+	/// Is the whole row in the same direction as the paragraph?
 	bool same_direction() const;
-	///
+	/// Compute the data for visual positions. 
 	void computeTables(Paragraph const & par,
 			   Buffer const &, Row const & row);
 private:
 	///
 	bool same_direction_;
 	///
-	std::vector<lyx::pos_type> log2vis_list_;
+	std::vector<pos_type> log2vis_list_;
 	/** Maps positions in the visual string to positions
 	 *  in logical string.
 	 */
-	std::vector<lyx::pos_type> vis2log_list_;
+	std::vector<pos_type> vis2log_list_;
 	///
-	std::vector<lyx::pos_type> levels_;
+	std::vector<pos_type> levels_;
 	///
-	lyx::pos_type start_;
+	pos_type start_;
 	///
-	lyx::pos_type end_;
+	pos_type end_;
 };
 
+/// Should interpretation of the arrow keys be reversed?
+bool reverseDirectionNeeded(Cursor const & cur);
+
+/// Is current paragraph in RTL mode?
+bool isWithinRtlParagraph(Cursor const & cur);
+
+} // namespace lyx
+
 #endif // BIDI_H