__del__ ( self )

removes and deletes the handle

__init__ (
        self,
        canvas,
        report_function,
        values,
        )

creates a new handle

add_handle ( self )

adds the handle to a canvas

bind_handle ( self )

binds the events

create_items ( self )

creates the necessary items, must be configured by set_values

cursor_change (
        self,
        item,
        cursor=None,
        )

changes the mouse pointer to another cursor if no cursor is given, bindings are removed

end_move_event ( self,  event )

event handler for release event

get_values ( self )

get values from actual handle position

mouse_enters_handle (
        self,
        event,
        cursor,
        )

change cursor to predefined cursor

mouse_leaves_handle ( self,  event )

change cursor to default cursor

move_event ( self,  event )

event handler for moving this handle

remove_handle ( self,  canvas )

remove the handle from the canvas, unbinds the events

report ( self,  reason )

call report function

set_values ( self,  values )

set position of handle from values

start_move_event ( self,  event )

event handler for the first click on this handle

values_from_mouse ( self,  event )

calcualte values from mouse position and care of constraints