HOpenGL Libraries (OpenGL package) Source code Contents Index

Graphics.Rendering.OpenGL.GL.StateVar Portability portable Stability provisional Maintainer sven.panne@aedion.de

Description

Synopsis

class HasGetter g where get :: g a -> IO a data GettableStateVar a makeGettableStateVar :: IO a -> GettableStateVar a class HasSetter s where ($=) :: s a -> a -> IO () set :: [IO ()] -> IO () data SettableStateVar a makeSettableStateVar :: (a -> IO ()) -> SettableStateVar a data StateVar a makeStateVar :: IO a -> (a -> IO ()) -> StateVar a ($~) :: (HasGetter v, HasSetter v) => v a -> (a -> a) -> IO () ($=!) :: HasSetter s => s a -> a -> IO () ($~!) :: (HasGetter v, HasSetter v) => v a -> (a -> a) -> IO ()

Documentation

class HasGetter g where

Methods get :: g a -> IO a Instances HasGetter GettableStateVar HasGetter IORef HasGetter StateVar

data GettableStateVar a

Instances HasGetter GettableStateVar

makeGettableStateVar :: IO a -> GettableStateVar a

class HasSetter s where

Methods ($=) :: s a -> a -> IO () Instances HasSetter IORef HasSetter SettableStateVar HasSetter StateVar

set :: [IO ()] -> IO ()

data SettableStateVar a

Instances HasSetter SettableStateVar

makeSettableStateVar :: (a -> IO ()) -> SettableStateVar a

data StateVar a

Instances HasGetter StateVar HasSetter StateVar

makeStateVar :: IO a -> (a -> IO ()) -> StateVar a

($~) :: (HasGetter v, HasSetter v) => v a -> (a -> a) -> IO ()

A modificator convenience function.

($=!) :: HasSetter s => s a -> a -> IO ()

A strict variant of $=.

($~!) :: (HasGetter v, HasSetter v) => v a -> (a -> a) -> IO ()

A strict variant of $~.

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