Graphics.Rendering.Chart.Backend.Types

Documentation

data LineCap

The different supported line ends.

Constructors

LineCapButt

Just cut the line straight.

LineCapRound

Make a rounded line end.

LineCapSquare

Make a square that ends the line.

Instances

Eq LineCap

Methods

(==) :: LineCap -> LineCap -> Bool

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

Ord LineCap

Methods

compare :: LineCap -> LineCap -> Ordering

(<) :: LineCap -> LineCap -> Bool

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

(>) :: LineCap -> LineCap -> Bool

(>=) :: LineCap -> LineCap -> Bool

max :: LineCap -> LineCap -> LineCap

min :: LineCap -> LineCap -> LineCap

Show LineCap

Methods

showsPrec :: Int -> LineCap -> ShowS

show :: LineCap -> String

showList :: [LineCap] -> ShowS

data LineJoin

The different supported ways to join line ends.

Constructors

LineJoinMiter

Extends the outline until they meet each other.

LineJoinRound

Draw a circle fragment to connet line end.

LineJoinBevel

Like miter, but cuts it off if a certain threshold is exceeded.

Instances

Eq LineJoin

Methods

(==) :: LineJoin -> LineJoin -> Bool

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

Ord LineJoin

Methods

compare :: LineJoin -> LineJoin -> Ordering

(<) :: LineJoin -> LineJoin -> Bool

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

(>) :: LineJoin -> LineJoin -> Bool

(>=) :: LineJoin -> LineJoin -> Bool

max :: LineJoin -> LineJoin -> LineJoin

min :: LineJoin -> LineJoin -> LineJoin

Show LineJoin

Methods

showsPrec :: Int -> LineJoin -> ShowS

show :: LineJoin -> String

showList :: [LineJoin] -> ShowS

data LineStyle

Data type for the style of a line.

Constructors

LineStyle

Fields

• _line_width :: Double

  The thickness of a line in device units.

• _line_color :: AlphaColour Double

  The color of a line.

• _line_dashes :: [Double]

  The dash pattern. Every value at a even index gives a dash width and every value at a odd index gives a gap width in device units.

• _line_cap :: LineCap

  How to end a line.

• _line_join :: LineJoin

  How to connect two lines.

Instances

Eq LineStyle

Methods

(==) :: LineStyle -> LineStyle -> Bool

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

Show LineStyle

Methods

showsPrec :: Int -> LineStyle -> ShowS

show :: LineStyle -> String

showList :: [LineStyle] -> ShowS

Default LineStyle

The default line style.

Methods

def :: LineStyle

data FontSlant

The possible slants of a font.

Constructors

FontSlantNormal

Normal font style without slant.

FontSlantItalic

With a slight slant.

FontSlantOblique

With a greater slant.

Instances

Eq FontSlant

Methods

(==) :: FontSlant -> FontSlant -> Bool

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

Ord FontSlant

Methods

compare :: FontSlant -> FontSlant -> Ordering

(<) :: FontSlant -> FontSlant -> Bool

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

(>) :: FontSlant -> FontSlant -> Bool

(>=) :: FontSlant -> FontSlant -> Bool

max :: FontSlant -> FontSlant -> FontSlant

min :: FontSlant -> FontSlant -> FontSlant

Show FontSlant

Methods

showsPrec :: Int -> FontSlant -> ShowS

show :: FontSlant -> String

showList :: [FontSlant] -> ShowS

Default FontSlant

The default font slant.

Methods

def :: FontSlant

data FontWeight

The possible weights of a font.

Constructors

FontWeightNormal

Normal font style without weight.

FontWeightBold

Bold font.

Instances

Eq FontWeight

Methods

(==) :: FontWeight -> FontWeight -> Bool

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

Ord FontWeight

Methods

compare :: FontWeight -> FontWeight -> Ordering

(<) :: FontWeight -> FontWeight -> Bool

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

(>) :: FontWeight -> FontWeight -> Bool

(>=) :: FontWeight -> FontWeight -> Bool

max :: FontWeight -> FontWeight -> FontWeight

min :: FontWeight -> FontWeight -> FontWeight

Show FontWeight

Methods

showsPrec :: Int -> FontWeight -> ShowS

show :: FontWeight -> String

showList :: [FontWeight] -> ShowS

Default FontWeight

The default font weight.

Methods

def :: FontWeight

data FontStyle

Data type for a font.

Constructors

FontStyle

Fields

• _font_name :: String

  The font family or font face to use.

• _font_size :: Double

  The height of the rendered font in device coordinates.

• _font_slant :: FontSlant

  The slant to render with.

• _font_weight :: FontWeight

  The weight to render with.

• _font_color :: AlphaColour Double

  The color to render text with.

Instances

Eq FontStyle

Methods

(==) :: FontStyle -> FontStyle -> Bool

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

Show FontStyle

Methods

showsPrec :: Int -> FontStyle -> ShowS

show :: FontStyle -> String

showList :: [FontStyle] -> ShowS

Default FontStyle

The default font style.

Methods

def :: FontStyle

data HTextAnchor

Possible horizontal anchor points for text.

Constructors

HTA_Left

HTA_Centre

HTA_Right

Instances

Eq HTextAnchor

Methods

(==) :: HTextAnchor -> HTextAnchor -> Bool

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

Ord HTextAnchor

Methods

compare :: HTextAnchor -> HTextAnchor -> Ordering

(<) :: HTextAnchor -> HTextAnchor -> Bool

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

(>) :: HTextAnchor -> HTextAnchor -> Bool

(>=) :: HTextAnchor -> HTextAnchor -> Bool

max :: HTextAnchor -> HTextAnchor -> HTextAnchor

min :: HTextAnchor -> HTextAnchor -> HTextAnchor

Show HTextAnchor

Methods

showsPrec :: Int -> HTextAnchor -> ShowS

show :: HTextAnchor -> String

showList :: [HTextAnchor] -> ShowS

data VTextAnchor

Possible vertical anchor points for text.

Constructors

VTA_Top

VTA_Centre

VTA_Bottom

VTA_BaseLine

Instances

Eq VTextAnchor

Methods

(==) :: VTextAnchor -> VTextAnchor -> Bool

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

Ord VTextAnchor

Methods

compare :: VTextAnchor -> VTextAnchor -> Ordering

(<) :: VTextAnchor -> VTextAnchor -> Bool

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

(>) :: VTextAnchor -> VTextAnchor -> Bool

(>=) :: VTextAnchor -> VTextAnchor -> Bool

max :: VTextAnchor -> VTextAnchor -> VTextAnchor

min :: VTextAnchor -> VTextAnchor -> VTextAnchor

Show VTextAnchor

Methods

showsPrec :: Int -> VTextAnchor -> ShowS

show :: VTextAnchor -> String

showList :: [VTextAnchor] -> ShowS

data TextSize

Text metrics returned by textSize.

Constructors

TextSize

Fields

• textSizeWidth :: Double

  The total width of the text.

• textSizeAscent :: Double

  The ascent or space above the baseline.

• textSizeDescent :: Double

  The decent or space below the baseline.

• textSizeYBearing :: Double

  The Y bearing.

• textSizeHeight :: Double

  The total height of the text.

Instances

Eq TextSize

Methods

(==) :: TextSize -> TextSize -> Bool

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

Show TextSize

Methods

showsPrec :: Int -> TextSize -> ShowS

show :: TextSize -> String

showList :: [TextSize] -> ShowS

newtype FillStyle

Abstract data type for a fill style.

The contained action sets the required fill style in the rendering state.

Constructors

FillStyleSolid

Fields

• _fill_color :: AlphaColour Double

Instances

Eq FillStyle

Methods

(==) :: FillStyle -> FillStyle -> Bool

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

Show FillStyle

Methods

showsPrec :: Int -> FillStyle -> ShowS

show :: FillStyle -> String

showList :: [FillStyle] -> ShowS

Default FillStyle

The default fill style.

Methods

def :: FillStyle

type AlignmentFn = Point -> Point

A function to align points for a certain rendering device.

data AlignmentFns

Holds the point and coordinate alignment function.

Constructors

AlignmentFns

Fields

• afPointAlignFn :: AlignmentFn

  An adjustment applied immediately prior to points being displayed in device coordinates.

  When device coordinates correspond to pixels, a cleaner image is created if this transform rounds to the nearest pixel. With higher-resolution output, this transform can just be the identity function.

  This is usually used to align prior to stroking.

• afCoordAlignFn :: AlignmentFn

  The adjustment applied immediately prior to coordinates being transformed.

  This is usually used to align prior to filling.

bitmapAlignmentFns :: AlignmentFns

Alignment to render on raster based graphics.

vectorAlignmentFns :: AlignmentFns

Alignment to render on vector based graphics.

line_width :: Lens' LineStyle Double

line_join :: Lens' LineStyle LineJoin

line_dashes :: Lens' LineStyle [Double]

line_color :: Lens' LineStyle (AlphaColour Double)

line_cap :: Lens' LineStyle LineCap

font_weight :: Lens' FontStyle FontWeight

font_slant :: Lens' FontStyle FontSlant

font_size :: Lens' FontStyle Double

font_name :: Lens' FontStyle String

font_color :: Lens' FontStyle (AlphaColour Double)

fill_color :: Iso' FillStyle (AlphaColour Double)