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Graphics.Rendering.Chart.Backend.Types

Synopsis

Documentation

data LineCap Source

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
Ord LineCap
Show LineCap

data LineJoin Source

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
Ord LineJoin
Show LineJoin

data LineStyle Source

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
Show LineStyle
Default LineStyle	The default line style.

data FontSlant Source

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
Ord FontSlant
Show FontSlant
Default FontSlant	The default font slant.

data FontWeight Source

The possible weights of a font.

Constructors

FontWeightNormal	Normal font style without weight.
FontWeightBold	Bold font.

Instances

Eq FontWeight
Ord FontWeight
Show FontWeight
Default FontWeight	The default font weight.

data FontStyle Source

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
Show FontStyle
Default FontStyle	The default font style.

defaultFontStyle :: FontStyle Source

Deprecated: Use the according Data.Default instance!

The default font style.

data HTextAnchor Source

Possible horizontal anchor points for text.

Constructors

HTA_Left
HTA_Centre
HTA_Right

Instances

Eq HTextAnchor
Ord HTextAnchor
Show HTextAnchor

data VTextAnchor Source

Possible vertical anchor points for text.

Constructors

VTA_Top
VTA_Centre
VTA_Bottom
VTA_BaseLine

Instances

Eq VTextAnchor
Ord VTextAnchor
Show VTextAnchor

data TextSize Source

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
Show TextSize

newtype FillStyle Source

Abstract data type for a fill style.

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

Constructors

FillStyleSolid
Fields _fill_colour :: AlphaColour Double

Instances

Eq FillStyle
Show FillStyle
Default FillStyle	The default fill style.

type AlignmentFn = Point -> Point Source

A function to align points for a certain rendering device.

data AlignmentFns Source

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

A adjustment applied immediately prior to coordinates being transformed.

This is usually used to align prior to filling.

bitmapAlignmentFns :: AlignmentFns Source

Alignment to render good on raster based graphics.

vectorAlignmentFns :: AlignmentFns Source

Alignment to render good on vector based graphics.

line_width :: Lens' LineStyle Double Source

line_join :: Lens' LineStyle LineJoin Source

line_dashes :: Lens' LineStyle [Double]Source

line_color :: Lens' LineStyle (AlphaColour Double)Source

line_cap :: Lens' LineStyle LineCap Source

font_weight :: Lens' FontStyle FontWeight Source

font_slant :: Lens' FontStyle FontSlant Source

font_size :: Lens' FontStyle Double Source

font_name :: Lens' FontStyle String Source

font_color :: Lens' FontStyle (AlphaColour Double)Source