This is the scroller button used inside the Lscrollbar for scrolling. This button can be clicked on and dragged to scroll the content of the scrollbars owner object. Every Lscrollbar creates one of these objects. It is based on the Lbutton_pixmap object.

Supports the :otype attributes of :vertical and :horizontal

Returns true because the scroller button can always be dragged.

Uses the owners foreground color (:fg attribute).

The scroller button always starts out with a fixed position that is dependant on the owners (Lscrollbar) position and a fixed size that is dependant on the owners (Lscrollbar) total_size and client_size. It prepares :horizontal scroller buttons slightly different from vertical ones.

Repaints the client area to make sure we can see the button when our owner (Lscrollbar) is moved.

Resizes the scroller button based on the owners (Lscrollbar) total_size and client_size. This is called by the Lscrollbar any time the owners (Lscrollbar) owner changes size or content.

Controls the dragging of the scroller button and triggers the appropriate :on_scroll event to the owner object (Lscrollbar).

Remembers the distance from the current mouse position to the top of the scroller button. This is used when dragging the scroller button to keep the movement consistent. Also starts the dragging process.

Forgets the remembered distance.