{-# LINE 2 "./Graphics/UI/Gtk/Scrolling/HScrollbar.chs" #-}
-- -*-haskell-*-
-- GIMP Toolkit (GTK) Widget HScrollbar
--
-- Author : Axel Simon
--
-- Created: 23 May 2001
--
-- Copyright (C) 1999-2005 Axel Simon
--
-- This library is free software; you can redistribute it and/or
-- modify it under the terms of the GNU Lesser General Public
-- License as published by the Free Software Foundation; either
-- version 2.1 of the License, or (at your option) any later version.
--
-- This library is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-- Lesser General Public License for more details.
--
-- |
-- Maintainer : gtk2hs-users@lists.sourceforge.net
-- Stability : provisional
-- Portability : portable (depends on GHC)
--
-- A horizontal scrollbar
--
module Graphics.UI.Gtk.Scrolling.HScrollbar (
-- * Detail
--
-- | The 'HScrollbar' widget is a widget arranged horizontally creating a
-- scrollbar. See 'Scrollbar' for details on scrollbars. An 'Adjustment'
-- may be added to handle the adjustment of the scrollbar using
-- 'hScrollbarNew' or you can use 'hScrollbarNewDefaults' in
-- which case one will be created for you. See 'Adjustment' for details.
--
-- All interesting functions can be found in 'Range', from which it is derived.

-- * Class Hierarchy
-- |
-- @
-- | 'GObject'
-- | +----'Object'
-- | +----'Widget'
-- | +----'Range'
-- | +----'Scrollbar'
-- | +----HScrollbar
-- @

-- * Types
  HScrollbar,
  HScrollbarClass,
  castToHScrollbar, gTypeHScrollbar,
  toHScrollbar,

-- * Constructors
  hScrollbarNew,
  hScrollbarNewDefaults
  ) where

import Control.Monad (liftM)

import System.Glib.FFI
import Graphics.UI.Gtk.Abstract.Object (makeNewObject)
import Graphics.UI.Gtk.Types
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{-# LINE 68 "./Graphics/UI/Gtk/Scrolling/HScrollbar.chs" #-}

--------------------
-- Constructors

-- | Creates a new horizontal scrollbar.
--
hScrollbarNew ::
    Adjustment -- ^ @adjustment@ - the 'Adjustment' to use.
 -> IO HScrollbar
hScrollbarNew :: Adjustment -> IO HScrollbar
hScrollbarNew Adjustment
adjustment =
  (ForeignPtr HScrollbar -> HScrollbar, FinalizerPtr HScrollbar)
-> IO (Ptr HScrollbar) -> IO HScrollbar
forall obj.
GObjectClass obj =>
(ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
makeNewObject (ForeignPtr HScrollbar -> HScrollbar, FinalizerPtr HScrollbar)
forall {a}. (ForeignPtr HScrollbar -> HScrollbar, FinalizerPtr a)
mkHScrollbar (IO (Ptr HScrollbar) -> IO HScrollbar)
-> IO (Ptr HScrollbar) -> IO HScrollbar
forall a b. (a -> b) -> a -> b
$
  (Ptr Widget -> Ptr HScrollbar)
-> IO (Ptr Widget) -> IO (Ptr HScrollbar)
forall (m :: * -> *) a1 r. Monad m => (a1 -> r) -> m a1 -> m r
liftM (Ptr Widget -> Ptr HScrollbar
forall a b. Ptr a -> Ptr b
castPtr :: Ptr Widget -> Ptr HScrollbar) (IO (Ptr Widget) -> IO (Ptr HScrollbar))
-> IO (Ptr Widget) -> IO (Ptr HScrollbar)
forall a b. (a -> b) -> a -> b
$
  (\(Adjustment ForeignPtr Adjustment
arg1) -> ForeignPtr Adjustment
-> (Ptr Adjustment -> IO (Ptr Widget)) -> IO (Ptr Widget)
forall a b. ForeignPtr a -> (Ptr a -> IO b) -> IO b
withForeignPtr ForeignPtr Adjustment
arg1 ((Ptr Adjustment -> IO (Ptr Widget)) -> IO (Ptr Widget))
-> (Ptr Adjustment -> IO (Ptr Widget)) -> IO (Ptr Widget)
forall a b. (a -> b) -> a -> b
$ \Ptr Adjustment
argPtr1 ->Ptr Adjustment -> IO (Ptr Widget)
gtk_hscrollbar_new Ptr Adjustment
argPtr1)
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    adjustment

-- | Create a new HScrollbar without specifying an existing 'Adjustment'. A
-- new one will be created instead.
--
hScrollbarNewDefaults :: IO HScrollbar
hScrollbarNewDefaults :: IO HScrollbar
hScrollbarNewDefaults = Adjustment -> IO HScrollbar
hScrollbarNew (ForeignPtr Adjustment -> Adjustment
Adjustment ForeignPtr Adjustment
forall a. ForeignPtr a
nullForeignPtr)

foreign import ccall unsafe "gtk_hscrollbar_new"
  gtk_hscrollbar_new :: ((Ptr Adjustment) -> (IO (Ptr Widget)))