Safe Haskell	Safe
Language	Haskell2010

SDL.Power

Contents

Power Status

Synopsis

getPowerInfo :: (Functor m, MonadIO m) => m PowerState
data PowerState
- = Battery BatteryState Charge
- | Mains
- | UnknownPowerState
data BatteryState
- = Draining
- | Charged
- | Charging
data Charge = Charge {
- chargeSecondsLeft :: Maybe CInt
- chargePercent :: Maybe CInt
}

Power Status

getPowerInfo :: (Functor m, MonadIO m) => m PowerState #

Current power supply details.

Throws SDLException if the current power state can not be determined.

See SDL_GetPowerInfo for C documentation.

data PowerState #

Information about the power supply for the user's environment

Constructors

Battery BatteryState Charge	The user is on a battery powered device. See `BatteryState` for charge information, and `Charge` for charge information
Mains	The user is on a device connected to the mains.
UnknownPowerState	SDL could not determine the power for the device.

Instances

Eq PowerState #
Instance details Defined in SDL.Power Methods (==) :: PowerState -> PowerState -> Bool # (/=) :: PowerState -> PowerState -> Bool #
Ord PowerState #
Instance details Defined in SDL.Power Methods compare :: PowerState -> PowerState -> Ordering # (<) :: PowerState -> PowerState -> Bool # (<=) :: PowerState -> PowerState -> Bool # (>) :: PowerState -> PowerState -> Bool # (>=) :: PowerState -> PowerState -> Bool # max :: PowerState -> PowerState -> PowerState # min :: PowerState -> PowerState -> PowerState #
Read PowerState #
Instance details Defined in SDL.Power Methods readsPrec :: Int -> ReadS PowerState # readList :: ReadS [PowerState] # readPrec :: ReadPrec PowerState # readListPrec :: ReadPrec [PowerState] #
Show PowerState #
Instance details Defined in SDL.Power Methods showsPrec :: Int -> PowerState -> ShowS # show :: PowerState -> String # showList :: [PowerState] -> ShowS #
Generic PowerState #
Instance details Defined in SDL.Power Associated Types type Rep PowerState :: * -> * # Methods from :: PowerState -> Rep PowerState x # to :: Rep PowerState x -> PowerState #
type Rep PowerState #
Instance details Defined in SDL.Power type Rep PowerState = D1 (MetaData "PowerState" "SDL.Power" "sdl2-2.4.1.0-BSoUqVHl3myLrLd0xltRmd" False) (C1 (MetaCons "Battery" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 BatteryState) :: S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 Charge)) :+: (C1 (MetaCons "Mains" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "UnknownPowerState" PrefixI False) (U1 :: -> *)))

data BatteryState #

Information on battery consumption for battery powered devices

Constructors

Draining	The battery is currently being drained.
Charged	The battery is fully charged.
Charging	The device is plugged in and the battery is charging.

Instances

Bounded BatteryState #
Instance details Defined in SDL.Power Methods minBound :: BatteryState # maxBound :: BatteryState #
Enum BatteryState #
Instance details Defined in SDL.Power Methods succ :: BatteryState -> BatteryState # pred :: BatteryState -> BatteryState # toEnum :: Int -> BatteryState # fromEnum :: BatteryState -> Int # enumFrom :: BatteryState -> [BatteryState] # enumFromThen :: BatteryState -> BatteryState -> [BatteryState] # enumFromTo :: BatteryState -> BatteryState -> [BatteryState] # enumFromThenTo :: BatteryState -> BatteryState -> BatteryState -> [BatteryState] #
Eq BatteryState #
Instance details Defined in SDL.Power Methods (==) :: BatteryState -> BatteryState -> Bool # (/=) :: BatteryState -> BatteryState -> Bool #
Data BatteryState #
Instance details Defined in SDL.Power Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> BatteryState -> c BatteryState # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c BatteryState # toConstr :: BatteryState -> Constr # dataTypeOf :: BatteryState -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c BatteryState) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c BatteryState) # gmapT :: (forall b. Data b => b -> b) -> BatteryState -> BatteryState # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> BatteryState -> r # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> BatteryState -> r # gmapQ :: (forall d. Data d => d -> u) -> BatteryState -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> BatteryState -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> BatteryState -> m BatteryState # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> BatteryState -> m BatteryState # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> BatteryState -> m BatteryState #
Ord BatteryState #
Instance details Defined in SDL.Power Methods compare :: BatteryState -> BatteryState -> Ordering # (<) :: BatteryState -> BatteryState -> Bool # (<=) :: BatteryState -> BatteryState -> Bool # (>) :: BatteryState -> BatteryState -> Bool # (>=) :: BatteryState -> BatteryState -> Bool # max :: BatteryState -> BatteryState -> BatteryState # min :: BatteryState -> BatteryState -> BatteryState #
Read BatteryState #
Instance details Defined in SDL.Power Methods readsPrec :: Int -> ReadS BatteryState # readList :: ReadS [BatteryState] # readPrec :: ReadPrec BatteryState # readListPrec :: ReadPrec [BatteryState] #
Show BatteryState #
Instance details Defined in SDL.Power Methods showsPrec :: Int -> BatteryState -> ShowS # show :: BatteryState -> String # showList :: [BatteryState] -> ShowS #
Generic BatteryState #
Instance details Defined in SDL.Power Associated Types type Rep BatteryState :: * -> * # Methods from :: BatteryState -> Rep BatteryState x # to :: Rep BatteryState x -> BatteryState #
type Rep BatteryState #
Instance details Defined in SDL.Power type Rep BatteryState = D1 (MetaData "BatteryState" "SDL.Power" "sdl2-2.4.1.0-BSoUqVHl3myLrLd0xltRmd" False) (C1 (MetaCons "Draining" PrefixI False) (U1 :: * -> ) :+: (C1 (MetaCons "Charged" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "Charging" PrefixI False) (U1 :: -> *)))

data Charge #

Information about how much charge a battery has.

Constructors

Charge
Fields chargeSecondsLeft :: Maybe CInt How many seconds of battery life is left chargePercent :: Maybe CInt The percentage of battery charged

Instances

Eq Charge #
Instance details Defined in SDL.Power Methods (==) :: Charge -> Charge -> Bool # (/=) :: Charge -> Charge -> Bool #
Ord Charge #
Instance details Defined in SDL.Power Methods compare :: Charge -> Charge -> Ordering # (<) :: Charge -> Charge -> Bool # (<=) :: Charge -> Charge -> Bool # (>) :: Charge -> Charge -> Bool # (>=) :: Charge -> Charge -> Bool # max :: Charge -> Charge -> Charge # min :: Charge -> Charge -> Charge #
Read Charge #
Instance details Defined in SDL.Power Methods readsPrec :: Int -> ReadS Charge # readList :: ReadS [Charge] # readPrec :: ReadPrec Charge # readListPrec :: ReadPrec [Charge] #
Show Charge #
Instance details Defined in SDL.Power Methods showsPrec :: Int -> Charge -> ShowS # show :: Charge -> String # showList :: [Charge] -> ShowS #
Generic Charge #
Instance details Defined in SDL.Power Associated Types type Rep Charge :: * -> * # Methods from :: Charge -> Rep Charge x # to :: Rep Charge x -> Charge #
type Rep Charge #
Instance details Defined in SDL.Power type Rep Charge = D1 (MetaData "Charge" "SDL.Power" "sdl2-2.4.1.0-BSoUqVHl3myLrLd0xltRmd" False) (C1 (MetaCons "Charge" PrefixI True) (S1 (MetaSel (Just "chargeSecondsLeft") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 (Maybe CInt)) :*: S1 (MetaSel (Just "chargePercent") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 (Maybe CInt))))