CairoContextRef

public struct CairoContextRef : CairoContextProtocol, GWeakCapturing

The CairoContextRef type acts as a lightweight Swift reference to an underlying GdkCairoContext instance. It exposes methods that can operate on this data type through CairoContextProtocol conformance. Use CairoContextRef only as an unowned reference to an existing GdkCairoContext instance.

GdkCairoContext is an object representing the platform-specific draw context.

GdkCairoContexts are created for a surface using [methodGdk.Surface.create_cairo_context], and the context can then be used to draw on that surface.

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  • ptr 
    Untyped pointer to the underlying `GdkCairoContext` instance.

    For type-safe access, use the generated, typed pointer cairo_context_ptr property instead.

    Declaration

    Swift

    public let ptr: UnsafeMutableRawPointer!
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CairoContext Class

  • Designated initialiser from the underlying C data type

    Declaration

    Swift

    @inlinable
init(_ p: UnsafeMutablePointer<GdkCairoContext>)
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  • Designated initialiser from a constant pointer to the underlying C data type

    Declaration

    Swift

    @inlinable
init(_ p: UnsafePointer<GdkCairoContext>)
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  • Conditional initialiser from an optional pointer to the underlying C data type

    Declaration

    Swift

    @inlinable
init!(_ maybePointer: UnsafeMutablePointer<GdkCairoContext>?)
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  • Conditional initialiser from an optional, non-mutable pointer to the underlying C data type

    Declaration

    Swift

    @inlinable
init!(_ maybePointer: UnsafePointer<GdkCairoContext>?)
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  • Conditional initialiser from an optional gpointer

    Declaration

    Swift

    @inlinable
init!(gpointer g: gpointer?)
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  • Conditional initialiser from an optional, non-mutable gconstpointer

    Declaration

    Swift

    @inlinable
init!(gconstpointer g: gconstpointer?)
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  • Reference intialiser for a related type that implements CairoContextProtocol

    Declaration

    Swift

    @inlinable
init<T>(_ other: T) where T : CairoContextProtocol
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  • This factory is syntactic sugar for setting weak pointers wrapped in GWeak<T>

    Declaration

    Swift

    @inlinable
static func unowned<T>(_ other: T) -> CairoContextRef where T : CairoContextProtocol
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  • Unsafe typed initialiser. Do not use unless you know the underlying data type the pointer points to conforms to CairoContextProtocol.

    Declaration

    Swift

    @inlinable
init<T>(cPointer: UnsafeMutablePointer<T>)
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  • Unsafe typed initialiser. Do not use unless you know the underlying data type the pointer points to conforms to CairoContextProtocol.

    Declaration

    Swift

    @inlinable
init<T>(constPointer: UnsafePointer<T>)
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  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to CairoContextProtocol.

    Declaration

    Swift

    @inlinable
init(mutating raw: UnsafeRawPointer)
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  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to CairoContextProtocol.

    Declaration

    Swift

    @inlinable
init(raw: UnsafeMutableRawPointer)
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  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to CairoContextProtocol.

    Declaration

    Swift

    @inlinable
init(opaquePointer: OpaquePointer)
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