package FLTK.Widgets.Valuators.Sliders.Scrollbars is


    type Scrollbar is new Slider with private;

    type Scrollbar_Reference (Data : not null access Scrollbar'Class) is
        limited null record with Implicit_Dereference => Data;




    package Forge is

        function Create
               (X, Y, W, H : in Integer;
                Text       : in String := "")
            return Scrollbar;

    end Forge;




    function Get_Line_Size
           (This : in Scrollbar)
        return Natural;

    procedure Set_Line_Size
           (This : in out Scrollbar;
            To   : in     Natural);

    function Get_Position
           (This : in Scrollbar)
        return Natural;

    procedure Set_Position
           (This : in out Scrollbar;
            To   : in     Natural);

    procedure Set_All
           (This        : in out Scrollbar;
            Position    : in     Natural;
            Win_Size    : in     Natural;
            First_Line  : in     Natural;
            Total_Lines : in     Natural);




    procedure Draw
           (This : in out Scrollbar);

    function Handle
           (This  : in out Scrollbar;
            Event : in     Event_Kind)
        return Event_Outcome;


private


    type Scrollbar is new Slider with null record;

    overriding procedure Finalize
           (This : in out Scrollbar);




    pragma Inline (Get_Line_Size);
    pragma Inline (Set_Line_Size);
    pragma Inline (Get_Position);
    pragma Inline (Set_Position);
    pragma Inline (Set_All);


    pragma Inline (Draw);
    pragma Inline (Handle);


end FLTK.Widgets.Valuators.Sliders.Scrollbars;