Copyright	(c) Alastair Reid 1999-2003
License	BSD-style (see the file libraries/base/LICENSE)
Maintainer	libraries@haskell.org
Stability	provisional
Portability	portable
Safe Haskell	None
Language	Haskell98

Graphics.X11.Xlib.Font

Description

A collection of FFI declarations for interfacing with Xlib Fonts.

Synopsis

type Glyph = Word16
queryFont :: Display -> Font -> IO FontStruct
fontFromGC :: Display -> GC -> IO Font
loadQueryFont :: Display -> String -> IO FontStruct
freeFont :: Display -> FontStruct -> IO ()
data FontStruct
fontFromFontStruct :: FontStruct -> Font
ascentFromFontStruct :: FontStruct -> Int32
descentFromFontStruct :: FontStruct -> Int32
type CharStruct = (CInt, CInt, CInt, CInt, CInt)
textExtents :: FontStruct -> String -> (FontDirection, Int32, Int32, CharStruct)
textWidth :: FontStruct -> String -> Int32

Documentation

type Glyph = Word16 Source #

queryFont :: Display -> Font -> IO FontStruct Source #

interface to the X11 library function XQueryFont().

fontFromGC :: Display -> GC -> IO Font Source #

interface to the X11 library function XGetGCValues().

loadQueryFont :: Display -> String -> IO FontStruct Source #

interface to the X11 library function XLoadQueryFont().

freeFont :: Display -> FontStruct -> IO () Source #

interface to the X11 library function XFreeFont().

data FontStruct Source #

pointer to an X11 XFontStruct structure

Instances

Eq FontStruct Source #
Instance details Defined in Graphics.X11.Xlib.Font Methods (==) :: FontStruct -> FontStruct -> Bool # (/=) :: FontStruct -> FontStruct -> Bool #
Data FontStruct Source #
Instance details Defined in Graphics.X11.Xlib.Font Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> FontStruct -> c FontStruct # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c FontStruct # toConstr :: FontStruct -> Constr # dataTypeOf :: FontStruct -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c FontStruct) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c FontStruct) # gmapT :: (forall b. Data b => b -> b) -> FontStruct -> FontStruct # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> FontStruct -> r # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> FontStruct -> r # gmapQ :: (forall d. Data d => d -> u) -> FontStruct -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> FontStruct -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> FontStruct -> m FontStruct # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> FontStruct -> m FontStruct # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> FontStruct -> m FontStruct #
Ord FontStruct Source #
Instance details Defined in Graphics.X11.Xlib.Font Methods compare :: FontStruct -> FontStruct -> Ordering # (<) :: FontStruct -> FontStruct -> Bool # (<=) :: FontStruct -> FontStruct -> Bool # (>) :: FontStruct -> FontStruct -> Bool # (>=) :: FontStruct -> FontStruct -> Bool # max :: FontStruct -> FontStruct -> FontStruct # min :: FontStruct -> FontStruct -> FontStruct #
Show FontStruct Source #
Instance details Defined in Graphics.X11.Xlib.Font Methods showsPrec :: Int -> FontStruct -> ShowS # show :: FontStruct -> String # showList :: [FontStruct] -> ShowS #

fontFromFontStruct :: FontStruct -> Font Source #

ascentFromFontStruct :: FontStruct -> Int32 Source #

descentFromFontStruct :: FontStruct -> Int32 Source #

type CharStruct = (CInt, CInt, CInt, CInt, CInt) Source #

textExtents :: FontStruct -> String -> (FontDirection, Int32, Int32, CharStruct) Source #

interface to the X11 library function XTextExtents().

textWidth :: FontStruct -> String -> Int32 Source #

interface to the X11 library function XTextWidth().