#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
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