cosmetic updates in engine list functions, trade menu updates

1 files changed, 18 insertions, 6 deletions

diff --git a/src/ui/scrollpane.h b/src/ui/scrollpane.h
index 82c74c9..8fe8395 100644
--- a/src/ui/scrollpane.h
+++ b/src/ui/scrollpane.h
@@ -26,33 +26,45 @@ public:
 	inline int scroll() const {
 		return scrollpane_scroll;
 	}
+	
+	/// current scroll offset
+	inline int offset() const {
+		return scrollpane_offset;
+	}
 
 	/// text alignment
 	inline unsigned int alignment() const {
 		return scrollpane_alignment;
 	}
 
-	/// set text alignment
-	void set_alignment(const unsigned int alignment);
-
 	/* -- mutators --------------------------------------------- */
 
 	/// set scroll
-	void set_scroll(int scroll);
+	void set_scroll(const int scroll);
+	
+	/// set scroll offset
+	void set_offset(const int offset);
 
 	/// increase scroll
-	void inc_scroll(int scroll);
+	void inc_scroll(const int scroll);
 
 	/// decrease scroll
-	void dec_scroll(int scroll);
+	void dec_scroll(const int scroll);
+
+	/// set text alignment
+	void set_alignment(const unsigned int alignment);
 
 protected:
 	/// draw the scroll pane
 	virtual void draw();
+	
+	/// key event handler provides mouse scrolling
+	virtual bool on_keypress(const int key, const unsigned int modifier);
 
 private:
 	ui::Text		&scrollpane_text;
 	int			scrollpane_scroll;
+	int			scrollpane_offset;
 	unsigned int		scrollpane_alignment;
 };