Graphics.UI.GLUT.Input

GLUT-based keyboard/mouse handling.

Sven Panne 2000 [e-mail]

This provides a "still down" event in addition to GLUT's key/mouse button up/down events, and manages bindings from input events to actions.

Documentation

data Key :: *

A generalized view of keys

Constructors

Char Char

SpecialKey SpecialKey

MouseButton MouseButton

Instances

Eq Key

Methods

(==) :: Key -> Key -> Bool

(/=) :: Key -> Key -> Bool

Ord Key

Methods

compare :: Key -> Key -> Ordering

(<) :: Key -> Key -> Bool

(<=) :: Key -> Key -> Bool

(>) :: Key -> Key -> Bool

(>=) :: Key -> Key -> Bool

max :: Key -> Key -> Key

min :: Key -> Key -> Key

Show Key

Methods

showsPrec :: Int -> Key -> ShowS

show :: Key -> String

showList :: [Key] -> ShowS

data KeyEvent

Constructors

Press

StillDown

Release

Instances

Eq KeyEvent

Methods

(==) :: KeyEvent -> KeyEvent -> Bool

(/=) :: KeyEvent -> KeyEvent -> Bool

type KeyBinder = Key -> KeyEvent -> Maybe InputHandler -> IO ()

type InputHandler = Modifiers -> Position -> IO ()

type StillDownHandler = IO ()

glutInitInput :: IO (KeyBinder, StillDownHandler)

Initialise the input system, which keeps a list of input event to action bindings and executes the the proper actions automatically. Returns a function for adding bindings, and another which should be called periodically (eg from refresh) to trigger still-down actions.