Copyright	(c) 2025
License	MIT
Maintainer	mschavinda@gmail.com
Safe Haskell	None
Language	GHC2021

Granite.Render.Scene

Description

Backend-agnostic IR. Coordinates are in logical pixels; the terminal backend maps them to character cells via pxPerChar / pxPerLine (Braille gives 2×4 sub-cell resolution).

Synopsis

data Point = Point !Double !Double
data Rect = Rect {
- rectX :: !Double
- rectY :: !Double
- rectW :: !Double
- rectH :: !Double
}
data Mark
- = MCircle !Point !Double !Style
- | MRect !Rect !Style
- | MPolyline ![Point] !Style
- | MPolygon ![Point] !Style
- | MPath !Text !Style
- | MText !Point !Text !TextStyle
- | MArc !Point !Double !Double !Double !Style
- | MAxisLine !Point !Point !Style
- | MGroup ![Mark]
data Scene = Scene {
- sceneWidth :: !Double
- sceneHeight :: !Double
- sceneMarks :: ![Mark]
}
data Style = Style {
- styleFill :: !(Maybe Color)
- styleStroke :: !(Maybe Color)
- styleStrokeWidth :: !Double
- styleFillOpacity :: !Double
}
defaultStyle :: Style
data TextStyle = TextStyle {
- textFill :: !Color
- textSize :: !Double
- textAnchor :: !TextAnchor
- textRotate :: !Double
- textTitle :: !(Maybe Text)
}
defaultTextStyle :: TextStyle
data TextAnchor
- = AnchorStart
- | AnchorMiddle
- | AnchorEnd
pxPerChar :: Double
pxPerLine :: Double

Documentation

data Point Source #

Constructors

Point !Double !Double

Instances

Instances details

Show Point Source #
Instance details Defined in Granite.Render.Scene Methods showsPrec :: Int -> Point -> ShowS # show :: Point -> String # showList :: [Point] -> ShowS #
Eq Point Source #
Instance details Defined in Granite.Render.Scene Methods (==) :: Point -> Point -> Bool # (/=) :: Point -> Point -> Bool #

data Rect Source #

Axis-aligned rectangle by top-left + size.

Constructors

Rect
Fields rectX :: !Double rectY :: !Double rectW :: !Double rectH :: !Double

Instances

Instances details

Show Rect Source #
Instance details Defined in Granite.Render.Scene Methods showsPrec :: Int -> Rect -> ShowS # show :: Rect -> String # showList :: [Rect] -> ShowS #
Eq Rect Source #
Instance details Defined in Granite.Render.Scene Methods (==) :: Rect -> Rect -> Bool # (/=) :: Rect -> Rect -> Bool #

data Mark Source #

Primitive drawable marks. MArc takes (center, radius, a0, a1) in radians CCW from +x. MPolygon is a closed filled polyline. MAxisLine is an axis-aligned 1-px line that the terminal backend writes as box-drawing chars (│ ─ ┼) for crisp axes; everything else is rasterised through Braille.

Constructors

MCircle !Point !Double !Style
MRect !Rect !Style
MPolyline ![Point] !Style
MPolygon ![Point] !Style
MPath !Text !Style
MText !Point !Text !TextStyle
MArc !Point !Double !Double !Double !Style
MAxisLine !Point !Point !Style
MGroup ![Mark]

Instances

Instances details

Show Mark Source #
Instance details Defined in Granite.Render.Scene Methods showsPrec :: Int -> Mark -> ShowS # show :: Mark -> String # showList :: [Mark] -> ShowS #
Eq Mark Source #
Instance details Defined in Granite.Render.Scene Methods (==) :: Mark -> Mark -> Bool # (/=) :: Mark -> Mark -> Bool #

data Scene Source #

Constructors

Scene
Fields sceneWidth :: !Double sceneHeight :: !Double sceneMarks :: ![Mark]

Instances

Instances details

Show Scene Source #
Instance details Defined in Granite.Render.Scene Methods showsPrec :: Int -> Scene -> ShowS # show :: Scene -> String # showList :: [Scene] -> ShowS #
Eq Scene Source #
Instance details Defined in Granite.Render.Scene Methods (==) :: Scene -> Scene -> Bool # (/=) :: Scene -> Scene -> Bool #

data Style Source #

Nothing on fill or stroke means "don't paint that side".

Constructors

Style
Fields styleFill :: !(Maybe Color) styleStroke :: !(Maybe Color) styleStrokeWidth :: !Double styleFillOpacity :: !Double

Instances

Instances details

Show Style Source #
Instance details Defined in Granite.Render.Scene Methods showsPrec :: Int -> Style -> ShowS # show :: Style -> String # showList :: [Style] -> ShowS #
Eq Style Source #
Instance details Defined in Granite.Render.Scene Methods (==) :: Style -> Style -> Bool # (/=) :: Style -> Style -> Bool #

defaultStyle :: Style Source #

data TextStyle Source #

Constructors

TextStyle
Fields textFill :: !Color textSize :: !Double textAnchor :: !TextAnchor textRotate :: !Double Rotation in degrees about the anchor point; 0 = upright. textTitle :: !(Maybe Text) A `<title>` tooltip (the untruncated label); `Nothing` = none.

Instances

Instances details

Show TextStyle Source #
Instance details Defined in Granite.Render.Scene Methods showsPrec :: Int -> TextStyle -> ShowS # show :: TextStyle -> String # showList :: [TextStyle] -> ShowS #
Eq TextStyle Source #
Instance details Defined in Granite.Render.Scene Methods (==) :: TextStyle -> TextStyle -> Bool # (/=) :: TextStyle -> TextStyle -> Bool #

defaultTextStyle :: TextStyle Source #

data TextAnchor Source #

Constructors

AnchorStart
AnchorMiddle
AnchorEnd

Instances

Instances details

Show TextAnchor Source #
Instance details Defined in Granite.Render.Scene Methods showsPrec :: Int -> TextAnchor -> ShowS # show :: TextAnchor -> String # showList :: [TextAnchor] -> ShowS #
Eq TextAnchor Source #
Instance details Defined in Granite.Render.Scene Methods (==) :: TextAnchor -> TextAnchor -> Bool # (/=) :: TextAnchor -> TextAnchor -> Bool #

pxPerChar :: Double Source #

pxPerLine :: Double Source #