Refactoring: zones and keepout areas are drawn using the same function.

    int PlaceModule( TOOL_EVENT& aEvent );

    int PlaceModule( TOOL_EVENT& aEvent );

private:

private:

    ///> Starts drawing a selected shape.

    ///> Starts drawing a selected shape (i.e. DRAWSEGMENT).

    ///> @param aShape is the type of created shape (@see STROKE_T).

    int draw( int aShape );

    int draw( int aShape );

    ///> Draws a polygon, that is added as a zone or a keepout area.

    ///> @param aKeepout decides if the drawn polygon is a zone or a keepout area.

    int drawZone( bool aKeepout );

    ///> Sets up handlers for various events.

    ///> Sets up handlers for various events.

    void setTransitions();

    void setTransitions();