{-# LANGUAGE RecordWildCards #-}
-- | Datastructures representing the CSS box model,
-- & utilities for operating on them.
module Graphics.Layout.Box(Border(..), mapX, mapY,
        Size(..), mapSizeX, mapSizeY,
        PaddedBox(..), zeroBox, lengthBox, mapX', mapY',
        width, height, minWidth, minHeight, maxWidth, maxHeight,
        leftSpace, rightSpace, topSpace, bottomSpace, hSpace, vSpace,
        Length(..), mapAuto, lowerLength, Zero(..), CastDouble(..)) where

-- | Amount of space surrounding the box.
data Border m n = Border {
    Border m n -> m
top :: m, Border m n -> m
bottom :: m, Border m n -> n
left :: n, Border m n -> n
right :: n
} deriving Border m n -> Border m n -> Bool
(Border m n -> Border m n -> Bool)
-> (Border m n -> Border m n -> Bool) -> Eq (Border m n)
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
forall m n. (Eq m, Eq n) => Border m n -> Border m n -> Bool
/= :: Border m n -> Border m n -> Bool
$c/= :: forall m n. (Eq m, Eq n) => Border m n -> Border m n -> Bool
== :: Border m n -> Border m n -> Bool
$c== :: forall m n. (Eq m, Eq n) => Border m n -> Border m n -> Bool
Eq
-- | Convert horizontal spacing via given callback.
mapX :: (n -> nn) -> Border m n -> Border m nn
-- | Convert vertical spacing via given callback.
mapY :: (m -> mm) -> Border m n -> Border mm n
mapX :: (n -> nn) -> Border m n -> Border m nn
mapX cb :: n -> nn
cb self :: Border m n
self = Border m n
self { left :: nn
left = n -> nn
cb (n -> nn) -> n -> nn
forall a b. (a -> b) -> a -> b
$ Border m n -> n
forall m n. Border m n -> n
left Border m n
self, right :: nn
right = n -> nn
cb (n -> nn) -> n -> nn
forall a b. (a -> b) -> a -> b
$ Border m n -> n
forall m n. Border m n -> n
right Border m n
self }
mapY :: (m -> mm) -> Border m n -> Border mm n
mapY cb :: m -> mm
cb self :: Border m n
self = Border m n
self { top :: mm
top = m -> mm
cb (m -> mm) -> m -> mm
forall a b. (a -> b) -> a -> b
$ Border m n -> m
forall m n. Border m n -> m
top Border m n
self, bottom :: mm
bottom = m -> mm
cb (m -> mm) -> m -> mm
forall a b. (a -> b) -> a -> b
$ Border m n -> m
forall m n. Border m n -> m
bottom Border m n
self }

-- | 2D size of a box. Typically inline is width & block is height.
-- This may change as support for vertical layout is added.
data Size m n = Size {Size m n -> n
inline :: n, Size m n -> m
block :: m} deriving (Size m n -> Size m n -> Bool
(Size m n -> Size m n -> Bool)
-> (Size m n -> Size m n -> Bool) -> Eq (Size m n)
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
forall m n. (Eq n, Eq m) => Size m n -> Size m n -> Bool
/= :: Size m n -> Size m n -> Bool
$c/= :: forall m n. (Eq n, Eq m) => Size m n -> Size m n -> Bool
== :: Size m n -> Size m n -> Bool
$c== :: forall m n. (Eq n, Eq m) => Size m n -> Size m n -> Bool
Eq, Int -> Size m n -> ShowS
[Size m n] -> ShowS
Size m n -> String
(Int -> Size m n -> ShowS)
-> (Size m n -> String) -> ([Size m n] -> ShowS) -> Show (Size m n)
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
forall m n. (Show n, Show m) => Int -> Size m n -> ShowS
forall m n. (Show n, Show m) => [Size m n] -> ShowS
forall m n. (Show n, Show m) => Size m n -> String
showList :: [Size m n] -> ShowS
$cshowList :: forall m n. (Show n, Show m) => [Size m n] -> ShowS
show :: Size m n -> String
$cshow :: forall m n. (Show n, Show m) => Size m n -> String
showsPrec :: Int -> Size m n -> ShowS
$cshowsPrec :: forall m n. (Show n, Show m) => Int -> Size m n -> ShowS
Show)
-- | Convert inline size via given callback
mapSizeY :: (m -> mm) -> Size m n -> Size mm n
mapSizeY :: (m -> mm) -> Size m n -> Size mm n
mapSizeY cb :: m -> mm
cb self :: Size m n
self = n -> mm -> Size mm n
forall m n. n -> m -> Size m n
Size (Size m n -> n
forall m n. Size m n -> n
inline Size m n
self) (m -> mm
cb (m -> mm) -> m -> mm
forall a b. (a -> b) -> a -> b
$ Size m n -> m
forall m n. Size m n -> m
block Size m n
self)
-- | Convert block size via given callback
mapSizeX :: (n -> nn) -> Size m n -> Size m nn
mapSizeX :: (n -> nn) -> Size m n -> Size m nn
mapSizeX cb :: n -> nn
cb self :: Size m n
self = nn -> m -> Size m nn
forall m n. n -> m -> Size m n
Size (n -> nn
cb (n -> nn) -> n -> nn
forall a b. (a -> b) -> a -> b
$ Size m n -> n
forall m n. Size m n -> n
inline Size m n
self) (Size m n -> m
forall m n. Size m n -> m
block Size m n
self)

-- | A box with min & max bounds & surrounding borders. The CSS Box Model.
data PaddedBox m n = PaddedBox {
    -- | The minimum amount of pixels this box should take.
    PaddedBox m n -> Size m n
min :: Size m n,
    -- | The maximum amount of pixels this box should take.
    PaddedBox m n -> Size m n
max :: Size m n,
    -- | The ideal number of pixels this box should take.
    PaddedBox m n -> Size Double Double
nat :: Size Double Double,
    -- | The amount of pixels this box should take.
    PaddedBox m n -> Size m n
size :: Size m n,
    -- | The amount of space between the box & the border.
    PaddedBox m n -> Border m n
padding :: Border m n,
    -- | The amount of space for the border.
    PaddedBox m n -> Border m n
border :: Border m n,
    -- | The amount of space between the border & anything else.
    PaddedBox m n -> Border m n
margin :: Border m n
} deriving PaddedBox m n -> PaddedBox m n -> Bool
(PaddedBox m n -> PaddedBox m n -> Bool)
-> (PaddedBox m n -> PaddedBox m n -> Bool) -> Eq (PaddedBox m n)
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
forall m n. (Eq n, Eq m) => PaddedBox m n -> PaddedBox m n -> Bool
/= :: PaddedBox m n -> PaddedBox m n -> Bool
$c/= :: forall m n. (Eq n, Eq m) => PaddedBox m n -> PaddedBox m n -> Bool
== :: PaddedBox m n -> PaddedBox m n -> Bool
$c== :: forall m n. (Eq n, Eq m) => PaddedBox m n -> PaddedBox m n -> Bool
Eq
-- | An empty box, takes up nospace onscreen.
zeroBox :: PaddedBox Double Double
zeroBox :: PaddedBox Double Double
zeroBox = PaddedBox :: forall m n.
Size m n
-> Size m n
-> Size Double Double
-> Size m n
-> Border m n
-> Border m n
-> Border m n
-> PaddedBox m n
PaddedBox {
    min :: Size Double Double
min = Double -> Double -> Size Double Double
forall m n. n -> m -> Size m n
Size 0 0,
    max :: Size Double Double
max = Double -> Double -> Size Double Double
forall m n. n -> m -> Size m n
Size 0 0,
    nat :: Size Double Double
nat = Double -> Double -> Size Double Double
forall m n. n -> m -> Size m n
Size 0 0,
    size :: Size Double Double
size = Double -> Double -> Size Double Double
forall m n. n -> m -> Size m n
Size 0 0,
    padding :: Border Double Double
padding = Double -> Double -> Double -> Double -> Border Double Double
forall m n. m -> m -> n -> n -> Border m n
Border 0 0 0 0,
    border :: Border Double Double
border = Double -> Double -> Double -> Double -> Border Double Double
forall m n. m -> m -> n -> n -> Border m n
Border 0 0 0 0,
    margin :: Border Double Double
margin = Double -> Double -> Double -> Double -> Border Double Double
forall m n. m -> m -> n -> n -> Border m n
Border 0 0 0 0
  }
-- | A box which takes up all available space with no borders.
lengthBox :: PaddedBox Length Length
lengthBox :: PaddedBox Length Length
lengthBox = PaddedBox :: forall m n.
Size m n
-> Size m n
-> Size Double Double
-> Size m n
-> Border m n
-> Border m n
-> Border m n
-> PaddedBox m n
PaddedBox {
    min :: Size Length Length
min = Length -> Length -> Size Length Length
forall m n. n -> m -> Size m n
Size Length
Auto Length
Auto,
    max :: Size Length Length
max = Length -> Length -> Size Length Length
forall m n. n -> m -> Size m n
Size Length
Auto Length
Auto,
    nat :: Size Double Double
nat = Double -> Double -> Size Double Double
forall m n. n -> m -> Size m n
Size 0 0,
    size :: Size Length Length
size = Length -> Length -> Size Length Length
forall m n. n -> m -> Size m n
Size Length
Auto Length
Auto,
    padding :: Border Length Length
padding = Length -> Length -> Length -> Length -> Border Length Length
forall m n. m -> m -> n -> n -> Border m n
Border Length
forall a. Zero a => a
zero Length
forall a. Zero a => a
zero Length
forall a. Zero a => a
zero Length
forall a. Zero a => a
zero,
    border :: Border Length Length
border = Length -> Length -> Length -> Length -> Border Length Length
forall m n. m -> m -> n -> n -> Border m n
Border Length
forall a. Zero a => a
zero Length
forall a. Zero a => a
zero Length
forall a. Zero a => a
zero Length
forall a. Zero a => a
zero,
    margin :: Border Length Length
margin = Length -> Length -> Length -> Length -> Border Length Length
forall m n. m -> m -> n -> n -> Border m n
Border Length
forall a. Zero a => a
zero Length
forall a. Zero a => a
zero Length
forall a. Zero a => a
zero Length
forall a. Zero a => a
zero
  }

-- | Convert all sizes along the inline axis via given callback.
mapX' :: (n -> nn) -> PaddedBox m n -> PaddedBox m nn
mapX' :: (n -> nn) -> PaddedBox m n -> PaddedBox m nn
mapX' cb :: n -> nn
cb PaddedBox {..} = PaddedBox :: forall m n.
Size m n
-> Size m n
-> Size Double Double
-> Size m n
-> Border m n
-> Border m n
-> Border m n
-> PaddedBox m n
PaddedBox {
    min :: Size m nn
min = nn -> m -> Size m nn
forall m n. n -> m -> Size m n
Size (n -> nn
cb (n -> nn) -> n -> nn
forall a b. (a -> b) -> a -> b
$ Size m n -> n
forall m n. Size m n -> n
inline Size m n
min) (Size m n -> m
forall m n. Size m n -> m
block Size m n
min),
    size :: Size m nn
size = nn -> m -> Size m nn
forall m n. n -> m -> Size m n
Size (n -> nn
cb (n -> nn) -> n -> nn
forall a b. (a -> b) -> a -> b
$ Size m n -> n
forall m n. Size m n -> n
inline Size m n
size) (Size m n -> m
forall m n. Size m n -> m
block Size m n
size),
    nat :: Size Double Double
nat = Double -> Double -> Size Double Double
forall m n. n -> m -> Size m n
Size 0 0,
    max :: Size m nn
max = nn -> m -> Size m nn
forall m n. n -> m -> Size m n
Size (n -> nn
cb (n -> nn) -> n -> nn
forall a b. (a -> b) -> a -> b
$ Size m n -> n
forall m n. Size m n -> n
inline Size m n
max) (Size m n -> m
forall m n. Size m n -> m
block Size m n
max),
    padding :: Border m nn
padding = (n -> nn) -> Border m n -> Border m nn
forall n nn m. (n -> nn) -> Border m n -> Border m nn
mapX n -> nn
cb Border m n
padding,
    border :: Border m nn
border = (n -> nn) -> Border m n -> Border m nn
forall n nn m. (n -> nn) -> Border m n -> Border m nn
mapX n -> nn
cb Border m n
border,
    margin :: Border m nn
margin = (n -> nn) -> Border m n -> Border m nn
forall n nn m. (n -> nn) -> Border m n -> Border m nn
mapX n -> nn
cb Border m n
margin
  }
-- | Convert all sizes along the block axis via given callback.
mapY' :: (m -> mm) -> PaddedBox m n -> PaddedBox mm n
mapY' :: (m -> mm) -> PaddedBox m n -> PaddedBox mm n
mapY' cb :: m -> mm
cb PaddedBox {..} = PaddedBox :: forall m n.
Size m n
-> Size m n
-> Size Double Double
-> Size m n
-> Border m n
-> Border m n
-> Border m n
-> PaddedBox m n
PaddedBox {
    min :: Size mm n
min = n -> mm -> Size mm n
forall m n. n -> m -> Size m n
Size (Size m n -> n
forall m n. Size m n -> n
inline Size m n
min) (m -> mm
cb (m -> mm) -> m -> mm
forall a b. (a -> b) -> a -> b
$ Size m n -> m
forall m n. Size m n -> m
block Size m n
min),
    size :: Size mm n
size = n -> mm -> Size mm n
forall m n. n -> m -> Size m n
Size (Size m n -> n
forall m n. Size m n -> n
inline Size m n
size) (m -> mm
cb (m -> mm) -> m -> mm
forall a b. (a -> b) -> a -> b
$ Size m n -> m
forall m n. Size m n -> m
block Size m n
size),
    nat :: Size Double Double
nat = Double -> Double -> Size Double Double
forall m n. n -> m -> Size m n
Size 0 0,
    max :: Size mm n
max = n -> mm -> Size mm n
forall m n. n -> m -> Size m n
Size (Size m n -> n
forall m n. Size m n -> n
inline Size m n
max) (m -> mm
cb (m -> mm) -> m -> mm
forall a b. (a -> b) -> a -> b
$ Size m n -> m
forall m n. Size m n -> m
block Size m n
max),
    padding :: Border mm n
padding = (m -> mm) -> Border m n -> Border mm n
forall m mm n. (m -> mm) -> Border m n -> Border mm n
mapY m -> mm
cb Border m n
padding,
    border :: Border mm n
border = (m -> mm) -> Border m n -> Border mm n
forall m mm n. (m -> mm) -> Border m n -> Border mm n
mapY m -> mm
cb Border m n
border,
    margin :: Border mm n
margin = (m -> mm) -> Border m n -> Border mm n
forall m mm n. (m -> mm) -> Border m n -> Border mm n
mapY m -> mm
cb Border m n
margin
  }

-- | The total size along the inline axis including borders, etc.
width :: PaddedBox m n -> n
width PaddedBox {..} = Border m n -> n
forall m n. Border m n -> n
left Border m n
margin n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
left Border m n
border n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
left Border m n
padding n -> n -> n
forall a. Num a => a -> a -> a
+
    Size m n -> n
forall m n. Size m n -> n
inline Size m n
size n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
right Border m n
padding n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
right Border m n
border n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
right Border m n
margin
-- | The total size along the block axis, including borders, etc.
height :: PaddedBox m n -> m
height PaddedBox {..} = Border m n -> m
forall m n. Border m n -> m
top Border m n
margin m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
top Border m n
border m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
top Border m n
padding m -> m -> m
forall a. Num a => a -> a -> a
+
    Size m n -> m
forall m n. Size m n -> m
block Size m n
size m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
bottom Border m n
padding m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
bottom Border m n
border m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
bottom Border m n
margin
-- | The total minimum size along the inline axis.
minWidth :: PaddedBox m n -> n
minWidth PaddedBox {..} = Border m n -> n
forall m n. Border m n -> n
left Border m n
margin n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
left Border m n
border n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
left Border m n
padding n -> n -> n
forall a. Num a => a -> a -> a
+
    Size m n -> n
forall m n. Size m n -> n
inline Size m n
min n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
right Border m n
padding n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
right Border m n
border n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
right Border m n
margin
-- | The total minimum size along the block axis.
minHeight :: PaddedBox m n -> m
minHeight PaddedBox {..} = Border m n -> m
forall m n. Border m n -> m
top Border m n
margin m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
top Border m n
border m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
top Border m n
padding m -> m -> m
forall a. Num a => a -> a -> a
+
    Size m n -> m
forall m n. Size m n -> m
block Size m n
min m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
bottom Border m n
padding m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
bottom Border m n
border m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
bottom Border m n
margin
-- | The total maximum size along the inline axis.
maxWidth :: PaddedBox m n -> n
maxWidth PaddedBox {..} = Border m n -> n
forall m n. Border m n -> n
left Border m n
margin n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
left Border m n
border n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
left Border m n
padding n -> n -> n
forall a. Num a => a -> a -> a
+
    Size m n -> n
forall m n. Size m n -> n
inline Size m n
max n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
right Border m n
padding n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
right Border m n
border n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
right Border m n
margin
-- | The total maximum size along the block axis.
maxHeight :: PaddedBox m n -> m
maxHeight PaddedBox {..} = Border m n -> m
forall m n. Border m n -> m
top Border m n
margin m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
top Border m n
border m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
top Border m n
padding m -> m -> m
forall a. Num a => a -> a -> a
+
    Size m n -> m
forall m n. Size m n -> m
block Size m n
max m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
bottom Border m n
padding m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
bottom Border m n
border m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
bottom Border m n
margin

leftSpace :: PaddedBox m n -> n
leftSpace PaddedBox {..} = Border m n -> n
forall m n. Border m n -> n
left Border m n
margin n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
left Border m n
border n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
left Border m n
padding
rightSpace :: PaddedBox m n -> n
rightSpace PaddedBox {..} = Border m n -> n
forall m n. Border m n -> n
right Border m n
margin n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
right Border m n
border n -> n -> n
forall a. Num a => a -> a -> a
+ Border m n -> n
forall m n. Border m n -> n
right Border m n
padding
topSpace :: PaddedBox m n -> m
topSpace PaddedBox {..} = Border m n -> m
forall m n. Border m n -> m
top Border m n
margin m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
top Border m n
border m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
top Border m n
padding
bottomSpace :: PaddedBox m n -> m
bottomSpace PaddedBox {..} = Border m n -> m
forall m n. Border m n -> m
bottom Border m n
margin m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
bottom Border m n
border m -> m -> m
forall a. Num a => a -> a -> a
+ Border m n -> m
forall m n. Border m n -> m
bottom Border m n
padding
hSpace :: PaddedBox m n -> n
hSpace self :: PaddedBox m n
self = PaddedBox m n -> n
forall n m. Num n => PaddedBox m n -> n
leftSpace PaddedBox m n
self n -> n -> n
forall a. Num a => a -> a -> a
+ PaddedBox m n -> n
forall n m. Num n => PaddedBox m n -> n
rightSpace PaddedBox m n
self
vSpace :: PaddedBox m n -> m
vSpace self :: PaddedBox m n
self = PaddedBox m n -> m
forall m n. Num m => PaddedBox m n -> m
topSpace PaddedBox m n
self m -> m -> m
forall a. Num a => a -> a -> a
+ PaddedBox m n -> m
forall m n. Num m => PaddedBox m n -> m
bottomSpace PaddedBox m n
self

-- | A partially-computed length value.
data Length = Pixels Double -- ^ Absolute number of device pixels.
        | Percent Double -- ^ Multiplier by container width.
        | Auto -- ^ Use normal layout computations.
        | Preferred -- ^ Use computed preferred width.
        | Min -- ^ Use minimum legible width.
        deriving Length -> Length -> Bool
(Length -> Length -> Bool)
-> (Length -> Length -> Bool) -> Eq Length
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: Length -> Length -> Bool
$c/= :: Length -> Length -> Bool
== :: Length -> Length -> Bool
$c== :: Length -> Length -> Bool
Eq

-- | Convert a length given the container's width. Filling in 0 for keywords.
-- If you wish for keywords to be handled differently, callers need to compute
-- that themselves.
lowerLength :: Double -> Length -> Double
lowerLength :: Double -> Length -> Double
lowerLength _ (Pixels x :: Double
x) = Double
x
lowerLength outerwidth :: Double
outerwidth (Percent x :: Double
x) = Double
x Double -> Double -> Double
forall a. Num a => a -> a -> a
* Double
outerwidth
lowerLength _ _ = 0

-- | Replace keywords with a given number of pixels.
-- Useful for avoiding messing up percentage calculations in later processing.
mapAuto :: Double -> Length -> Length
mapAuto x :: Double
x Auto = Double -> Length
Pixels Double
x
mapAuto x :: Double
x Preferred = Double -> Length
Pixels Double
x
mapAuto x :: Double
x Min = Double -> Length
Pixels Double
x
mapAuto _ x :: Length
x = Length
x

class Zero a where
    -- | Return the empty (or zero) value for a CatTrap geometric type.
    zero :: a

instance Zero Double where zero :: Double
zero = 0
instance Zero Length where zero :: Length
zero = Double -> Length
Pixels 0
instance (Zero m, Zero n) => Zero (PaddedBox m n) where
    zero :: PaddedBox m n
zero = PaddedBox :: forall m n.
Size m n
-> Size m n
-> Size Double Double
-> Size m n
-> Border m n
-> Border m n
-> Border m n
-> PaddedBox m n
PaddedBox {
        min :: Size m n
min = n -> m -> Size m n
forall m n. n -> m -> Size m n
Size n
forall a. Zero a => a
zero m
forall a. Zero a => a
zero,
        max :: Size m n
max = n -> m -> Size m n
forall m n. n -> m -> Size m n
Size n
forall a. Zero a => a
zero m
forall a. Zero a => a
zero,
        nat :: Size Double Double
nat = Double -> Double -> Size Double Double
forall m n. n -> m -> Size m n
Size 0 0,
        size :: Size m n
size = n -> m -> Size m n
forall m n. n -> m -> Size m n
Size n
forall a. Zero a => a
zero m
forall a. Zero a => a
zero,
        padding :: Border m n
padding = m -> m -> n -> n -> Border m n
forall m n. m -> m -> n -> n -> Border m n
Border m
forall a. Zero a => a
zero m
forall a. Zero a => a
zero n
forall a. Zero a => a
zero n
forall a. Zero a => a
zero,
        border :: Border m n
border = m -> m -> n -> n -> Border m n
forall m n. m -> m -> n -> n -> Border m n
Border m
forall a. Zero a => a
zero m
forall a. Zero a => a
zero n
forall a. Zero a => a
zero n
forall a. Zero a => a
zero,
        margin :: Border m n
margin = m -> m -> n -> n -> Border m n
forall m n. m -> m -> n -> n -> Border m n
Border m
forall a. Zero a => a
zero m
forall a. Zero a => a
zero n
forall a. Zero a => a
zero n
forall a. Zero a => a
zero
    }

class CastDouble a where
    -- | Convert a double to a double or length.
    fromDouble :: Double -> a
    -- | Convert a double or length to a double.
    toDouble :: a -> Double

instance CastDouble Double where
    fromDouble :: Double -> Double
fromDouble = Double -> Double
forall a. a -> a
id
    toDouble :: Double -> Double
toDouble = Double -> Double
forall a. a -> a
id
instance CastDouble Length where
    fromDouble :: Double -> Length
fromDouble = Double -> Length
Pixels
    toDouble :: Length -> Double
toDouble = Double -> Length -> Double
lowerLength 0