Safe Haskell | Safe |
---|---|
Language | Haskell2010 |
Get terminal window height and width without ncurses dependency
Based on answer by Andreas Hammar at http://stackoverflow.com/a/12807521/972985
Documentation
Terminal window width and height
Instances
Functor Window # | |
Foldable Window # | |
Defined in System.Console.Terminal.Common fold :: Monoid m => Window m -> m # foldMap :: Monoid m => (a -> m) -> Window a -> m # foldr :: (a -> b -> b) -> b -> Window a -> b # foldr' :: (a -> b -> b) -> b -> Window a -> b # foldl :: (b -> a -> b) -> b -> Window a -> b # foldl' :: (b -> a -> b) -> b -> Window a -> b # foldr1 :: (a -> a -> a) -> Window a -> a # foldl1 :: (a -> a -> a) -> Window a -> a # elem :: Eq a => a -> Window a -> Bool # maximum :: Ord a => Window a -> a # minimum :: Ord a => Window a -> a # | |
Traversable Window # | |
Eq a => Eq (Window a) # | |
Data a => Data (Window a) # | |
Defined in System.Console.Terminal.Common gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Window a -> c (Window a) # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Window a) # toConstr :: Window a -> Constr # dataTypeOf :: Window a -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Window a)) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Window a)) # gmapT :: (forall b. Data b => b -> b) -> Window a -> Window a # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Window a -> r # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Window a -> r # gmapQ :: (forall d. Data d => d -> u) -> Window a -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Window a -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Window a -> m (Window a) # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Window a -> m (Window a) # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Window a -> m (Window a) # | |
Read a => Read (Window a) # | |
Show a => Show (Window a) # | |
Generic (Window a) # | |
Generic1 Window # | |
type Rep (Window a) # | |
Defined in System.Console.Terminal.Common type Rep (Window a) = D1 (MetaData "Window" "System.Console.Terminal.Common" "terminal-size-0.3.2.1-Hh6hFaOyLfiJ6x0AenX2yY" False) (C1 (MetaCons "Window" PrefixI True) (S1 (MetaSel (Just "height") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 a) :*: S1 (MetaSel (Just "width") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 a))) | |
type Rep1 Window # | |
Defined in System.Console.Terminal.Common type Rep1 Window = D1 (MetaData "Window" "System.Console.Terminal.Common" "terminal-size-0.3.2.1-Hh6hFaOyLfiJ6x0AenX2yY" False) (C1 (MetaCons "Window" PrefixI True) (S1 (MetaSel (Just "height") NoSourceUnpackedness SourceStrict DecidedStrict) Par1 :*: S1 (MetaSel (Just "width") NoSourceUnpackedness SourceStrict DecidedStrict) Par1)) |
size :: Integral n => IO (Maybe (Window n)) #
Get terminal window width and height for stdout
.
>>>
import System.Console.Terminal.Size
>>>
size
Just (Window {height = 60, width = 112})
fdSize :: Integral n => Fd -> IO (Maybe (Window n)) #
Not available on Windows:
Get terminal window width and height for a specified file descriptor. If
it's not attached to a terminal then Nothing
is returned.
>>>
import System.Console.Terminal.Size
>>>
import System.Posix
>>>
fdSize stdOutput
Just (Window {height = 56, width = 85})>>>
fd <- openFd "foo" ReadWrite (Just stdFileMode) defaultFileFlags
>>>
fdSize fd
Nothing