Diagrams.Backend.HsQML

The end-user API.

Documentation

renderHsQML :: SizeSpec2D -> Diagram HsQML R2 -> IO (ObjRef (DiagramObj ()))

Render a diagram to a QML object that controls a Canvas.

data SizeSpec2D :: *

A specification of a (requested) rectangular size.

Constructors

Width !Double

Specify an explicit width. The height should be determined automatically (so as to preserve aspect ratio).

Height !Double

Specify an explicit height. The width should be determined automatically (so as to preserve aspect ratio).

Dims !Double !Double

An explicit specification of a width and height.

Absolute

Absolute size: use whatever size an object already has; do not rescale.

Instances

Eq SizeSpec2D

Ord SizeSpec2D

Show SizeSpec2D

Generic SizeSpec2D

Hashable SizeSpec2D

type Rep SizeSpec2D = D1 D1SizeSpec2D ((:+:) ((:+:) (C1 C1_0SizeSpec2D (S1 NoSelector (Rec0 Double))) (C1 C1_1SizeSpec2D (S1 NoSelector (Rec0 Double)))) ((:+:) (C1 C1_2SizeSpec2D ((:*:) (S1 NoSelector (Rec0 Double)) (S1 NoSelector (Rec0 Double)))) (C1 C1_3SizeSpec2D U1)))

mkSizeSpec :: Maybe Double -> Maybe Double -> SizeSpec2D

Create a size specification from a possibly-specified width and height.

data HsQML

Constructors

HsQML

Instances

Typeable * HsQML

Backend HsQML R2

Renderable Text HsQML

Renderable (Path R2) HsQML

Renderable (Trail R2) HsQML

data Options HsQML R2 = HsQMLOptions {

• _sizeSpec :: SizeSpec2D

}

type Result HsQML R2 = IO (ObjRef (DiagramObj ()))

data Render HsQML R2 = HsQMLRender {

• getObj :: DiagramObj ()

}

data family Options b v

Backend-specific rendering options.

Instances

data Options NullBackend

data Options HsQML R2 = HsQMLOptions {

• _sizeSpec :: SizeSpec2D

}

type B = HsQML

data DiagramObj a

The type to which the parts of a diagram are rendered. The end result of rendering is always a DiagramObj (). The monoid instance sequences actions on the same argument, with noop as identity. As DiagramObj is a wrapper over a function to IO, Functor, Applicative, Monad, and MonadIO instances are defined in an expected way.

Instances

Monad DiagramObj

Functor DiagramObj

Applicative DiagramObj

MonadIO DiagramObj

Monoid a => Monoid (DiagramObj a)

DefaultClass (DiagramObj ())

Typeable (* -> *) DiagramObj