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|
-- -*-haskell-*-
-- GIMP Toolkit (GTK) Widget FontSelection
--
-- Author : Duncan Coutts
--
-- Created: 2 August 2004
--
-- Copyright (C) 2004-2005 Duncan Coutts
--
-- 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 widget for selecting fonts
--
module Graphics.UI.Gtk.Selectors.FontSelection (
-- * Detail
--
-- | The 'FontSelection' widget lists the available fonts, styles and sizes,
-- allowing the user to select a font. It is used in the 'FontSelectionDialog'
-- widget to provide a dialog box for selecting fonts.
--
-- To set the font which is initially selected, use
-- 'fontSelectionSetFontName'.
--
-- To get the selected font use 'fontSelectionGetFontName'.
--
-- To change the text which is shown in the preview area, use
-- 'fontSelectionSetPreviewText'.
-- * Class Hierarchy
-- |
-- @
-- | 'GObject'
-- | +----'Object'
-- | +----'Widget'
-- | +----'Container'
-- | +----'Box'
-- | +----'VBox'
-- | +----FontSelection
-- @
-- * Types
FontSelection,
FontSelectionClass,
castToFontSelection, gTypeFontSelection,
toFontSelection,
-- * Constructors
fontSelectionNew,
-- * Methods
fontSelectionGetFontName,
fontSelectionSetFontName,
fontSelectionGetPreviewText,
fontSelectionSetPreviewText,
-- * Attributes
fontSelectionFontName,
fontSelectionPreviewText,
) where
import Control.Monad (liftM)
import System.Glib.FFI
import System.Glib.UTFString
import System.Glib.Attributes
import System.Glib.Properties
import Graphics.UI.Gtk.Abstract.Object (makeNewObject)
{#import Graphics.UI.Gtk.Types#}
{# context lib="gtk" prefix="gtk" #}
--------------------
-- Constructors
-- | Creates a new 'FontSelection'.
--
fontSelectionNew :: IO FontSelection
fontSelectionNew =
makeNewObject mkFontSelection $
liftM (castPtr :: Ptr Widget -> Ptr FontSelection) $
{# call unsafe font_selection_new #}
--------------------
-- Methods
-- | Gets the currently-selected font name.
--
fontSelectionGetFontName :: FontSelectionClass self => self
-> IO (Maybe String) -- ^ returns the name of the currently selected font, or
-- @Nothing@ if no font is selected.
fontSelectionGetFontName self =
{# call unsafe font_selection_get_font_name #}
(toFontSelection self)
>>= maybePeek readUTFString
-- | Sets the currently-selected font.
--
fontSelectionSetFontName :: FontSelectionClass self => self
-> String -- ^ @fontname@ - a fontname.
-> IO Bool -- ^ returns @True@ if the font was found.
fontSelectionSetFontName self fontname =
liftM toBool $
withUTFString fontname $ \fontnamePtr ->
{# call font_selection_set_font_name #}
(toFontSelection self)
fontnamePtr
-- | Gets the text displayed in the preview area.
--
fontSelectionGetPreviewText :: FontSelectionClass self => self -> IO String
fontSelectionGetPreviewText self =
{# call unsafe font_selection_get_preview_text #}
(toFontSelection self)
>>= peekUTFString
-- | Sets the text displayed in the preview area.
--
fontSelectionSetPreviewText :: FontSelectionClass self => self -> String -> IO ()
fontSelectionSetPreviewText self text =
withUTFString text $ \textPtr ->
{# call font_selection_set_preview_text #}
(toFontSelection self)
textPtr
--------------------
-- Attributes
-- | The X string that represents this font.
--
-- Default value: \"\"
--
fontSelectionFontName :: FontSelectionClass self => Attr self String
fontSelectionFontName = newAttrFromStringProperty "font_name"
-- | The text to display in order to demonstrate the selected font.
--
-- Default value: \"abcdefghijk ABCDEFGHIJK\"
--
fontSelectionPreviewText :: FontSelectionClass self => Attr self String
fontSelectionPreviewText = newAttr
fontSelectionGetPreviewText
fontSelectionSetPreviewText
|
