Clarify subtitle position with comments; add SubtitleString::set_v_position.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/subtitle_string.h b/src/subtitle_string.h
index 03d3d4f8..58710f7f 100644
--- a/src/subtitle_string.h
+++ b/src/subtitle_string.h
@@ -76,6 +76,9 @@ public:
 		return _text;
 	}
 
+	/** @return vertical position as a proportion of the screen height from the top
+	 *  (between 0 and 1)
+	 */
 	float v_position () const {
 		return _v_position;
 	}
@@ -106,6 +109,13 @@ public:
 	
 	int size_in_pixels (int screen_height) const;
 
+	/** @param p New vertical position as a proportion of the screen height
+	 *  from the top (between 0 and 1)
+	 */
+	void set_v_position (float p) {
+		_v_position = p;
+	}
+
 private:
 	/** font name */
 	std::string _font;