Data.GraphViz.Attributes.Colors

This module defines the various colors, etc. for Graphviz. For information on colors in general, see: http://graphviz.org/doc/info/attrs.html#k:color For named colors, see: http://graphviz.org/doc/info/colors.html

Note that the ColorBrewer Color Schemes (shortened to just "Brewer" for the rest of this module) are covered by the following license (also available in the LICENSE file of this library): http://graphviz.org/doc/info/colors.html#brewer_license

Color schemes.

data ColorScheme

This represents the color schemes that Graphviz accepts.

Constructors

X11

SVG

Brewer BrewerScheme

Instances

Eq ColorScheme

Methods

(==) :: ColorScheme -> ColorScheme -> Bool

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

Ord ColorScheme

Methods

compare :: ColorScheme -> ColorScheme -> Ordering

(<) :: ColorScheme -> ColorScheme -> Bool

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

(>) :: ColorScheme -> ColorScheme -> Bool

(>=) :: ColorScheme -> ColorScheme -> Bool

max :: ColorScheme -> ColorScheme -> ColorScheme

min :: ColorScheme -> ColorScheme -> ColorScheme

Read ColorScheme

Methods

readsPrec :: Int -> ReadS ColorScheme

readList :: ReadS [ColorScheme]

readPrec :: ReadPrec ColorScheme

readListPrec :: ReadPrec [ColorScheme]

Show ColorScheme

Methods

showsPrec :: Int -> ColorScheme -> ShowS

show :: ColorScheme -> String

showList :: [ColorScheme] -> ShowS

ParseDot ColorScheme

Methods

parseUnqt :: Parse ColorScheme

parse :: Parse ColorScheme

parseUnqtList :: Parse [ColorScheme]

parseList :: Parse [ColorScheme]

PrintDot ColorScheme

Methods

unqtDot :: ColorScheme -> DotCode

toDot :: ColorScheme -> DotCode

unqtListToDot :: [ColorScheme] -> DotCode

listToDot :: [ColorScheme] -> DotCode

Colors

data Color

Defining a color for use with Graphviz. Note that named colors have been split up into X11Colors and those based upon the Brewer color schemes.

Constructors

RGB

Fields

• red :: Word8
• green :: Word8
• blue :: Word8

RGBA

Fields

• red :: Word8
• green :: Word8
• blue :: Word8
• alpha :: Word8

HSV

The hue, saturation and value values must all be 0 <= x <=1.

Fields

• hue :: Double
• saturation :: Double
• value :: Double

X11Color X11Color

SVGColor SVGColor

BrewerColor BrewerColor

Instances

Eq Color

Methods

(==) :: Color -> Color -> Bool

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

Ord Color

Methods

compare :: Color -> Color -> Ordering

(<) :: Color -> Color -> Bool

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

(>) :: Color -> Color -> Bool

(>=) :: Color -> Color -> Bool

max :: Color -> Color -> Color

min :: Color -> Color -> Color

Read Color

Methods

readsPrec :: Int -> ReadS Color

readList :: ReadS [Color]

readPrec :: ReadPrec Color

readListPrec :: ReadPrec [Color]

Show Color

Methods

showsPrec :: Int -> Color -> ShowS

show :: Color -> String

showList :: [Color] -> ShowS

ParseDot Color

Methods

parseUnqt :: Parse Color

parse :: Parse Color

parseUnqtList :: Parse [Color]

parseList :: Parse [Color]

PrintDot Color

Methods

unqtDot :: Color -> DotCode

toDot :: Color -> DotCode

unqtListToDot :: [Color] -> DotCode

listToDot :: [Color] -> DotCode

type ColorList = [WeightedColor]

The sum of the optional weightings must sum to at most 1.

data WeightedColor

A Color tagged with an optional weighting.

Constructors

WC

Fields

• wColor :: Color
• weighting :: Maybe Double

  Must be in range 0 <= W <= 1.

Instances

Eq WeightedColor

Methods

(==) :: WeightedColor -> WeightedColor -> Bool

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

Ord WeightedColor

Methods

compare :: WeightedColor -> WeightedColor -> Ordering

(<) :: WeightedColor -> WeightedColor -> Bool

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

(>) :: WeightedColor -> WeightedColor -> Bool

(>=) :: WeightedColor -> WeightedColor -> Bool

max :: WeightedColor -> WeightedColor -> WeightedColor

min :: WeightedColor -> WeightedColor -> WeightedColor

Read WeightedColor

Methods

readsPrec :: Int -> ReadS WeightedColor

readList :: ReadS [WeightedColor]

readPrec :: ReadPrec WeightedColor

readListPrec :: ReadPrec [WeightedColor]

Show WeightedColor

Methods

showsPrec :: Int -> WeightedColor -> ShowS

show :: WeightedColor -> String

showList :: [WeightedColor] -> ShowS

ParseDot WeightedColor

Methods

parseUnqt :: Parse WeightedColor

parse :: Parse WeightedColor

parseUnqtList :: Parse [WeightedColor]

parseList :: Parse [WeightedColor]

PrintDot WeightedColor

Methods

unqtDot :: WeightedColor -> DotCode

toDot :: WeightedColor -> DotCode

unqtListToDot :: [WeightedColor] -> DotCode

listToDot :: [WeightedColor] -> DotCode

toWC :: Color -> WeightedColor

For colors without weightings.

toColorList :: [Color] -> ColorList

For a list of colors without weightings.

class NamedColor nc where

More easily convert named colors to an overall Color value.

Minimal complete definition

colorScheme, toColor, printNC, parseNC'

Methods

toColor :: nc -> Color

Instances

NamedColor X11Color

Methods

colorScheme :: X11Color -> ColorScheme

toColor :: X11Color -> Color

printNC :: Bool -> X11Color -> DotCode

parseNC' :: Bool -> Parse X11Color

NamedColor SVGColor

Methods

colorScheme :: SVGColor -> ColorScheme

toColor :: SVGColor -> Color

printNC :: Bool -> SVGColor -> DotCode

parseNC' :: Bool -> Parse SVGColor

NamedColor BrewerColor

Methods

colorScheme :: BrewerColor -> ColorScheme

toColor :: BrewerColor -> Color

printNC :: Bool -> BrewerColor -> DotCode

parseNC' :: Bool -> Parse BrewerColor

toWColor :: NamedColor nc => nc -> WeightedColor

Conversion to/from Colour.

toColour :: Color -> Maybe (AlphaColour Double)

Attempt to convert a Color into a Colour value with an alpha channel. The use of Maybe is because the RGB values of the BrewerColors haven't been stored here (primarily for licensing reasons).

fromColour :: Colour Double -> Color

Convert a Colour value to an RGB Color.

fromAColour :: AlphaColour Double -> Color

Convert an AlphaColour to an RGBA Color. The exception to this is for any AlphaColour which has alphaChannel ac == 0; these are converted to X11Color Transparent (note that the Show instance for such an AlphaColour is "transparent").