{-# LANGUAGE CPP, ExistentialQuantification, TypeSynonymInstances, FlexibleInstances, MultiParamTypeClasses, FlexibleContexts, ScopedTypeVariables #-}
{-# OPTIONS_GHC -fno-warn-orphans #-}
module Graphics.UI.FLTK.LowLevel.Scrollbar
    (
     -- * Constructor
     scrollbarNew,
     -- * Hierarchy
     --
     -- $hierarchy

     -- * Functions
     --
     -- $functions
    )
where
#include "Fl_ExportMacros.h"
#include "Fl_Types.h"
#include "Fl_ScrollbarC.h"
#include "Fl_WidgetC.h"
import C2HS hiding (cFromEnum, cFromBool, cToBool,cToEnum)
import Foreign.C.Types
import Graphics.UI.FLTK.LowLevel.Fl_Enumerations
import Graphics.UI.FLTK.LowLevel.Fl_Types
import Graphics.UI.FLTK.LowLevel.Utils
import Graphics.UI.FLTK.LowLevel.Hierarchy
import Graphics.UI.FLTK.LowLevel.Dispatch
import qualified Data.Text as T

{# fun Fl_Scrollbar_New as scrollbarNew' { `Int',`Int',`Int',`Int' } -> `Ptr ()' id #}
{# fun Fl_Scrollbar_New_WithLabel as scrollbarNewWithLabel' { `Int',`Int',`Int',`Int', unsafeToCString `T.Text'} -> `Ptr ()' id #}
scrollbarNew :: Rectangle -> Maybe T.Text -> IO (Ref Scrollbar)
scrollbarNew rectangle l'=
    let (x_pos, y_pos, width, height) = fromRectangle rectangle
    in case l' of
        Nothing -> scrollbarNew' x_pos y_pos width height >>=
                             toRef
        Just l -> scrollbarNewWithLabel' x_pos y_pos width height l >>=
                               toRef

{# fun Fl_Scrollbar_Destroy as scrollbarDestroy' { id `Ptr ()' } -> `()' supressWarningAboutRes #}
instance (impl ~ (IO ())) => Op (Destroy ()) Scrollbar orig impl where
  runOp _ _ win = swapRef win $ \winPtr -> do
    scrollbarDestroy' winPtr
    return nullPtr

{# fun Fl_Scrollbar_scrollvalue as scrollvalue' { id `Ptr ()',`Int',`Int',`Int',`Int' } -> `Int' #}
instance (impl ~ (Int -> Int -> Int -> Int ->  IO (Int))) => Op (SetScrollValue ()) Scrollbar orig impl where
  runOp _ _ slider pos size first total = withRef slider $ \sliderPtr -> scrollvalue' sliderPtr pos size first total

{# fun Fl_Scrollbar_set_linesize as setLinesize' { id `Ptr ()',`Int' } -> `()' #}
instance (impl ~ (LineSize ->  IO ())) => Op (SetLinesize ()) Scrollbar orig impl where
  runOp _ _ slider (LineSize i) = withRef slider $ \sliderPtr -> setLinesize' sliderPtr i

{# fun Fl_Scrollbar_linesize as linesize' { id `Ptr ()' } -> `Int' #}
instance (impl ~ ( IO LineSize)) => Op (GetLinesize ()) Scrollbar orig impl where
  runOp _ _ slider = withRef slider $ \sliderPtr -> linesize' sliderPtr >>= return . LineSize

{#fun Fl_Scrollbar_handle as scrollbarHandle'
      { id `Ptr ()', id `CInt' } -> `Int' #}
instance (impl ~ (Event -> IO (Either UnknownEvent ()))) => Op (Handle ()) Scrollbar orig impl where
  runOp _ _ scrollbar event = withRef scrollbar (\p -> scrollbarHandle' p (fromIntegral . fromEnum $ event)) >>= return  . successOrUnknownEvent

{# fun Fl_Widget_set_type as setType' { id `Ptr ()',`Word8' } -> `()' supressWarningAboutRes #}
instance (impl ~ (ScrollbarType ->  IO ())) => Op (SetType ()) Scrollbar orig impl where
  runOp _ _ widget t = withRef widget $ \widgetPtr -> setType' widgetPtr (fromInteger $ toInteger $ fromEnum t)
{# fun Fl_Widget_type as type' { id `Ptr ()' } -> `Word8' #}
instance (impl ~ IO (ScrollbarType)) => Op (GetType_ ()) Scrollbar orig impl where
  runOp _ _ widget = withRef widget $ \widgetPtr -> type' widgetPtr >>= return . toEnum . fromInteger . toInteger

-- $functions
-- @
-- destroy :: 'Ref' 'Scrollbar' -> 'IO' ()
--
-- getLinesize :: 'Ref' 'Scrollbar' -> 'IO' 'LineSize'
--
-- getType_ :: 'Ref' 'Scrollbar' -> 'IO' ('ScrollbarType')
--
-- handle :: 'Ref' 'Scrollbar' -> ('Event' -> 'IO' ('Either' 'UnknownEvent' ()))
--
-- setLinesize :: 'Ref' 'Scrollbar' -> 'LineSize' -> 'IO' ()
--
-- setScrollValue :: 'Ref' 'Scrollbar' -> 'Int' -> 'Int' -> 'Int' -> 'Int' -> 'IO' ('Int')
--
-- setType :: 'Ref' 'Scrollbar' -> 'ScrollbarType' -> 'IO' ()
-- @

-- $hierarchy
-- @
-- "Graphics.UI.FLTK.LowLevel.Widget"
--  |
--  v
-- "Graphics.UI.FLTK.LowLevel.Valuator"
--  |
--  v
-- "Graphics.UI.FLTK.LowLevel.Slider"
--  |
--  v
-- "Graphics.UI.FLTK.LowLevel.Scrollbar"
-- @