Safe Haskell	Safe-Inferred
Language	Haskell98

Data.Colour.SRGB

Description

Specifies Colour s in accordance with the sRGB standard.

Synopsis

data Colour a
data RGB a = RGB {
- channelRed :: !a
- channelGreen :: !a
- channelBlue :: !a
}
sRGB24 :: ( Ord b, Floating b) => Word8 -> Word8 -> Word8 -> Colour b
sRGBBounded :: ( Ord b, Floating b, Integral a, Bounded a) => a -> a -> a -> Colour b
sRGB :: ( Ord b, Floating b) => b -> b -> b -> Colour b
toSRGB24 :: ( RealFrac b, Floating b) => Colour b -> RGB Word8
toSRGBBounded :: ( RealFrac b, Floating b, Integral a, Bounded a) => Colour b -> RGB a
toSRGB :: ( Ord b, Floating b) => Colour b -> RGB b
sRGB24shows :: ( RealFrac b, Floating b) => Colour b -> ShowS
sRGB24show :: ( RealFrac b, Floating b) => Colour b -> String
sRGB24reads :: ( Ord b, Floating b) => ReadS ( Colour b)
sRGB24read :: ( Ord b, Floating b) => String -> Colour b
sRGBSpace :: ( Ord a, Floating a) => RGBSpace a

Documentation

data Colour a Source #

This type represents the human preception of colour. The a parameter is a numeric type used internally for the representation.

The Monoid instance allows one to add colours, but beware that adding colours can take you out of gamut. Consider using blend whenever possible.

Instances

Instances details

ColourOps Colour Source #
Instance details Defined in Data.Colour.Internal Methods over :: Num a => AlphaColour a -> Colour a -> Colour a Source # darken :: Num a => a -> Colour a -> Colour a Source #
AffineSpace Colour Source #
Instance details Defined in Data.Colour.Internal Methods affineCombo :: Num a => [(a, Colour a)] -> Colour a -> Colour a Source #
Eq a => Eq ( Colour a) Source #
Instance details Defined in Data.Colour.Internal Methods (==) :: Colour a -> Colour a -> Bool Source # (/=) :: Colour a -> Colour a -> Bool Source #
( Fractional a, Read a) => Read ( Colour a) Source #
Instance details Defined in Data.Colour Methods readsPrec :: Int -> ReadS ( Colour a) Source # readList :: ReadS [ Colour a] Source # readPrec :: ReadPrec ( Colour a) Source # readListPrec :: ReadPrec [ Colour a] Source #
( Fractional a, Show a) => Show ( Colour a) Source #
Instance details Defined in Data.Colour Methods showsPrec :: Int -> Colour a -> ShowS Source # show :: Colour a -> String Source # showList :: [ Colour a] -> ShowS Source #
Num a => Semigroup ( Colour a) Source #
Instance details Defined in Data.Colour.Internal Methods (<>) :: Colour a -> Colour a -> Colour a Source # sconcat :: NonEmpty ( Colour a) -> Colour a Source # stimes :: Integral b => b -> Colour a -> Colour a Source #
Num a => Monoid ( Colour a) Source #
Instance details Defined in Data.Colour.Internal Methods mempty :: Colour a Source # mappend :: Colour a -> Colour a -> Colour a Source # mconcat :: [ Colour a] -> Colour a Source #

data RGB a Source #

An RGB triple for an unspecified colour space.

Constructors

RGB
Fields channelRed :: !a channelGreen :: !a channelBlue :: !a

Instances

Instances details

Functor RGB Source #
Instance details Defined in Data.Colour.RGB Methods fmap :: (a -> b) -> RGB a -> RGB b Source # (<$) :: a -> RGB b -> RGB a Source #
Applicative RGB Source #
Instance details Defined in Data.Colour.RGB Methods pure :: a -> RGB a Source # (<>) :: RGB (a -> b) -> RGB a -> RGB b Source # liftA2 :: (a -> b -> c) -> RGB a -> RGB b -> RGB c Source # (>) :: RGB a -> RGB b -> RGB b Source # (<*) :: RGB a -> RGB b -> RGB a Source #
Eq a => Eq ( RGB a) Source #
Instance details Defined in Data.Colour.RGB Methods (==) :: RGB a -> RGB a -> Bool Source # (/=) :: RGB a -> RGB a -> Bool Source #
Read a => Read ( RGB a) Source #
Instance details Defined in Data.Colour.RGB Methods readsPrec :: Int -> ReadS ( RGB a) Source # readList :: ReadS [ RGB a] Source # readPrec :: ReadPrec ( RGB a) Source # readListPrec :: ReadPrec [ RGB a] Source #
Show a => Show ( RGB a) Source #
Instance details Defined in Data.Colour.RGB Methods showsPrec :: Int -> RGB a -> ShowS Source # show :: RGB a -> String Source # showList :: [ RGB a] -> ShowS Source #

sRGB24 :: ( Ord b, Floating b) => Word8 -> Word8 -> Word8 -> Colour b Source #

Construct a colour from a 24-bit (three 8-bit words) sRGB specification.

sRGBBounded :: ( Ord b, Floating b, Integral a, Bounded a) => a -> a -> a -> Colour b Source #

Construct a colour from an sRGB specification. Input components are expected to be in the range [0.. maxBound ].

sRGB :: ( Ord b, Floating b) => b -> b -> b -> Colour b Source #

Construct a colour from an sRGB specification. Input components are expected to be in the range [0..1].

toSRGB24 :: ( RealFrac b, Floating b) => Colour b -> RGB Word8 Source #

Return the approximate 24-bit sRGB colour components as three 8-bit components. Out of range values are clamped.

toSRGBBounded :: ( RealFrac b, Floating b, Integral a, Bounded a) => Colour b -> RGB a Source #

Return the approximate sRGB colour components in the range [0.. maxBound ]. Out of range values are clamped.

toSRGB :: ( Ord b, Floating b) => Colour b -> RGB b Source #

Return the sRGB colour components in the range [0..1].

sRGB24shows :: ( RealFrac b, Floating b) => Colour b -> ShowS Source #

Show a colour in hexadecimal form, e.g. "#00aaff"

sRGB24show :: ( RealFrac b, Floating b) => Colour b -> String Source #

Show a colour in hexadecimal form, e.g. "#00aaff"

sRGB24reads :: ( Ord b, Floating b) => ReadS ( Colour b) Source #

Read a colour in hexadecimal form, e.g. "#00aaff" or "00aaff"

sRGB24read :: ( Ord b, Floating b) => String -> Colour b Source #

Read a colour in hexadecimal form, e.g. "#00aaff" or "00aaff"

sRGBSpace :: ( Ord a, Floating a) => RGBSpace a Source #

The sRGB colour space