Safe Haskell	Safe
Language	Haskell2010

Graphics.Layout.Box

Description

Datastructures representing the CSS box model, & utilities for operating on them.

Synopsis

data Border m n = Border {
- top :: m
- bottom :: m
- left :: n
- right :: n
}
mapX :: (n -> nn) -> Border m n -> Border m nn
mapY :: (m -> mm) -> Border m n -> Border mm n
data Size m n = Size {
- inline :: n
- block :: m
}
mapSizeX :: (n -> nn) -> Size m n -> Size m nn
mapSizeY :: (m -> mm) -> Size m n -> Size mm n
data PaddedBox m n = PaddedBox {
- min :: Size m n
- max :: Size m n
- nat :: Size Double Double
- size :: Size m n
- padding :: Border m n
- border :: Border m n
- margin :: Border m n
}
zeroBox :: PaddedBox Double Double
lengthBox :: PaddedBox Length Length
mapX' :: (n -> nn) -> PaddedBox m n -> PaddedBox m nn
mapY' :: (m -> mm) -> PaddedBox m n -> PaddedBox mm n
width :: Num n => PaddedBox m n -> n
height :: Num m => PaddedBox m n -> m
minWidth :: Num n => PaddedBox m n -> n
minHeight :: Num m => PaddedBox m n -> m
maxWidth :: Num n => PaddedBox m n -> n
maxHeight :: Num m => PaddedBox m n -> m
data Length
- = Pixels Double
- | Percent Double
- | Auto
- | Preferred
- | Min
mapAuto :: Double -> Length -> Length
lowerLength :: Double -> Length -> Double
class Zero a where
- zero :: a
class CastDouble a where
- fromDouble :: Double -> a
- toDouble :: a -> Double

Documentation

data Border m n Source #

Amount of space surrounding the box.

Constructors

Border
Fields top :: m bottom :: m left :: n right :: n

mapX :: (n -> nn) -> Border m n -> Border m nn Source #

Convert horizontal spacing via given callback.

mapY :: (m -> mm) -> Border m n -> Border mm n Source #

Convert vertical spacing via given callback.

data Size m n Source #

2D size of a box. Typically inline is width & block is height. This may change as support for vertical layout is added.

Constructors

Size
Fields inline :: n block :: m

Instances

Instances details

(Eq n, Eq m) => Eq (Size m n) Source #
Instance details Defined in Graphics.Layout.Box Methods (==) :: Size m n -> Size m n -> Bool (/=) :: Size m n -> Size m n -> Bool
(Show n, Show m) => Show (Size m n) Source #
Instance details Defined in Graphics.Layout.Box Methods showsPrec :: Int -> Size m n -> ShowS show :: Size m n -> String showList :: [Size m n] -> ShowS

mapSizeX :: (n -> nn) -> Size m n -> Size m nn Source #

Convert block size via given callback

mapSizeY :: (m -> mm) -> Size m n -> Size mm n Source #

Convert inline size via given callback

data PaddedBox m n Source #

A box with min & max bounds & surrounding borders. The CSS Box Model.

Constructors

PaddedBox

Fields

min :: Size m n
The minimum amount of pixels this box should take.
max :: Size m n
The maximum amount of pixels this box should take.
nat :: Size Double Double
The ideal number of pixels this box should take.
size :: Size m n
The amount of pixels this box should take.
padding :: Border m n
The amount of space between the box & the border.
border :: Border m n
The amount of space for the border.
margin :: Border m n
The amount of space between the border & anything else.

Instances

Instances details

(Zero m, Zero n) => Zero (PaddedBox m n) Source #
Instance details Defined in Graphics.Layout.Box Methods zero :: PaddedBox m n Source #

zeroBox :: PaddedBox Double Double Source #

An empty box, takes up nospace onscreen.

lengthBox :: PaddedBox Length Length Source #

A box which takes up all available space with no borders.

mapX' :: (n -> nn) -> PaddedBox m n -> PaddedBox m nn Source #

Convert all sizes along the inline axis via given callback.

mapY' :: (m -> mm) -> PaddedBox m n -> PaddedBox mm n Source #

Convert all sizes along the block axis via given callback.

width :: Num n => PaddedBox m n -> n Source #

The total size along the inline axis including borders, etc.

height :: Num m => PaddedBox m n -> m Source #

The total size along the block axis, including borders, etc.

minWidth :: Num n => PaddedBox m n -> n Source #

The total minimum size along the inline axis.

minHeight :: Num m => PaddedBox m n -> m Source #

The total minimum size along the block axis.

maxWidth :: Num n => PaddedBox m n -> n Source #

The total maximum size along the inline axis.

maxHeight :: Num m => PaddedBox m n -> m Source #

The total maximum size along the block axis.

data Length Source #

A partially-computed length value.

Constructors

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.

Instances

Instances details

Eq Length Source #
Instance details Defined in Graphics.Layout.Box Methods (==) :: Length -> Length -> Bool (/=) :: Length -> Length -> Bool
CastDouble Length Source #
Instance details Defined in Graphics.Layout.Box Methods fromDouble :: Double -> Length Source # toDouble :: Length -> Double Source #
Zero Length Source #
Instance details Defined in Graphics.Layout.Box Methods zero :: Length Source #

mapAuto :: Double -> Length -> Length Source #

Replace keywords with a given number of pixels. Useful for avoiding messing up percentage calculations in later processing.

lowerLength :: Double -> Length -> Double Source #

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.

class Zero a where Source #

Methods

zero :: a Source #

Return the empty (or zero) value for a CatTrap geometric type.

Instances

Instances details

Zero Double Source #
Instance details Defined in Graphics.Layout.Box Methods zero :: Double Source #
Zero Length Source #
Instance details Defined in Graphics.Layout.Box Methods zero :: Length Source #
(Zero m, Zero n) => Zero (PaddedBox m n) Source #
Instance details Defined in Graphics.Layout.Box Methods zero :: PaddedBox m n Source #

class CastDouble a where Source #

Methods

fromDouble :: Double -> a Source #

Convert a double to a double or length.

toDouble :: a -> Double Source #

Convert a double or length to a double.

Instances

Instances details

CastDouble Double Source #
Instance details Defined in Graphics.Layout.Box Methods fromDouble :: Double -> Double Source # toDouble :: Double -> Double Source #
CastDouble Length Source #
Instance details Defined in Graphics.Layout.Box Methods fromDouble :: Double -> Length Source # toDouble :: Length -> Double Source #