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{-# LANGUAGE CPP #-}
-- -*-haskell-*-
-- GIMP Toolkit (GTK) Widget DisplayManager
--
-- Author : Andy Stewart
--
-- Created: 29 Mar 2010
--
-- Copyright (C) 2010 Andy Stewart
--
-- 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)
--
-- Maintains a list of all open GdkDisplays
--
-- * Module available since Gdk version 2.2
--
module Graphics.UI.Gtk.Gdk.DisplayManager (
-- * Detail
--
-- | The purpose of the 'DisplayManager' singleton object is to offer
-- notification when displays appear or disappear or the default display
-- changes.
-- * Class Hierarchy
--
-- |
-- @
-- | 'GObject'
-- | +----DisplayManager
-- @
#if GTK_CHECK_VERSION(2,2,0)
-- * Types
DisplayManager,
DisplayManagerClass,
castToDisplayManager,
toDisplayManager,
-- * Methods
displayManagerGet,
displayManagerListDisplays,
-- * Attributes
displayManagerDefaultDisplay,
-- * Signals
displayManagerOpened,
#endif
) where
import System.Glib.FFI
import System.Glib.Attributes
import System.Glib.Properties
import System.Glib.GList
{#import Graphics.UI.Gtk.Types#}
{#import Graphics.UI.Gtk.Signals#}
{# context lib="gdk" prefix="gdk" #}
#if GTK_CHECK_VERSION(2,2,0)
--------------------
-- Methods
-- | Returns the global 'DisplayManager' singleton; 'parsePargs', 'init', or
-- 'initCheck' must have been called first.
--
displayManagerGet :: IO DisplayManager -- ^ returns the singleton 'DisplayManager' object.
displayManagerGet =
constructNewGObject mkDisplayManager $
{# call gdk_display_manager_get #}
-- | List all currently open displays.
--
displayManagerListDisplays :: DisplayManagerClass self => self
-> IO [Display] -- ^ returns a newly allocated list of 'Display' objects.
displayManagerListDisplays self =
{# call gdk_display_manager_list_displays #}
(toDisplayManager self)
>>= fromGSList
>>= mapM (makeNewGObject mkDisplay . return)
--------------------
-- Attributes
-- | The default display.
--
displayManagerDefaultDisplay :: DisplayManagerClass self => Attr self Display
displayManagerDefaultDisplay = newAttrFromObjectProperty "default-display"
{# call pure unsafe gdk_display_get_type #}
--------------------
-- Signals
-- | The 'displayManagerOpened' signal is emitted when a display is opened.
--
displayManagerOpened :: DisplayManagerClass self => Signal self (Display -> IO ())
displayManagerOpened = Signal (connect_OBJECT__NONE "display_opened")
#endif
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