Card preview on style panel is refreshed when styling changes

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@492 0fc631ac-6414-0410-93d0-97cfa31319b6

src/gui/control/card_viewer.hpp

@@ -30,6 +30,8 @@ class CardViewer : public wxControl, public DataViewer {
 	/** May NOT be called while in onPaint/draw */
 	shared_ptr<DC> overdrawDC();
 	
+	/// Invalidate and redraw the entire viewer
+	void redraw();
 	/// Invalidate and redraw (the area of) a single value viewer
 	virtual void redraw(const ValueViewer&);