GI.Gsk.Objects.CairoNode

A render node for a Cairo surface.

Exported types

newtype CairoNode

Memory-managed wrapper type.

Constructors

CairoNode (ManagedPtr CairoNode)

Instances

Eq CairoNode

Defined in GI.Gsk.Objects.CairoNode

Methods

(==) :: CairoNode -> CairoNode -> Bool

(/=) :: CairoNode -> CairoNode -> Bool

BoxedPtr CairoNode

Defined in GI.Gsk.Objects.CairoNode

Methods

boxedPtrCopy :: CairoNode -> IO CairoNode

boxedPtrFree :: CairoNode -> IO ()

ManagedPtrNewtype CairoNode

Defined in GI.Gsk.Objects.CairoNode

Methods

toManagedPtr :: CairoNode -> ManagedPtr CairoNode

TypedObject CairoNode

Defined in GI.Gsk.Objects.CairoNode

Methods

glibType :: IO GType

HasParentTypes CairoNode

Defined in GI.Gsk.Objects.CairoNode

type ParentTypes CairoNode

Defined in GI.Gsk.Objects.CairoNode

type ParentTypes CairoNode = '[RenderNode]

class (BoxedPtr o, TypedObject o, IsDescendantOf CairoNode o) => IsCairoNode o

Type class for types which can be safely cast to CairoNode, for instance with toCairoNode.

Instances

(BoxedPtr o, TypedObject o, IsDescendantOf CairoNode o) => IsCairoNode o

Defined in GI.Gsk.Objects.CairoNode

toCairoNode :: (MonadIO m, IsCairoNode o) => o -> m CairoNode

Cast to CairoNode, for types for which this is known to be safe. For general casts, use castTo.

Methods

Click to display all available methods, including inherited ones

Methods

draw, ref, serialize, unref, writeToFile.

Getters

getBounds, getDrawContext, getNodeType, getSurface.

Setters

None.

getDrawContext

cairoNodeGetDrawContext

Arguments

:: (HasCallStack, MonadIO m, IsCairoNode a)

=> a

node: a GskRenderNode for a Cairo surface

-> m Context

Returns: a Cairo context used for drawing; use cairo_destroy() when done drawing

Creates a Cairo context for drawing using the surface associated to the render node.

If no surface exists yet, a surface will be created optimized for rendering to renderer.

getSurface

cairoNodeGetSurface

Arguments

:: (HasCallStack, MonadIO m, IsCairoNode a)

=> a

node: a GskRenderNode for a Cairo surface

-> m Surface

Returns: a Cairo surface

Retrieves the Cairo surface used by the render node.

new

cairoNodeNew

Arguments

:: (HasCallStack, MonadIO m)

=> Rect

bounds: the rectangle to render to

-> m CairoNode

Returns: A new GskRenderNode

Creates a GskRenderNode that will render a cairo surface into the area given by bounds.

You can draw to the cairo surface using cairoNodeGetDrawContext.