Matrix

open class Matrix : MatrixProtocol

A PangoMatrix specifies a transformation between user-space and device coordinates.

The transformation is given by

x_device = x_user * matrix->xx + y_user * matrix->xy + matrix->x0;
y_device = x_user * matrix->yx + y_user * matrix->yy + matrix->y0;

The Matrix type acts as an owner of an underlying PangoMatrix instance. It provides the methods that can operate on this data type through MatrixProtocol conformance. Use Matrix as a strong reference or owner of a PangoMatrix instance.

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

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

    Declaration

    Swift

    public let ptr: UnsafeMutableRawPointer!
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  • Designated initialiser from the underlying C data type. This creates an instance without performing an unbalanced retain i.e., ownership is transferred to the Matrix instance.

    Declaration

    Swift

    @inlinable
public init(_ op: UnsafeMutablePointer<PangoMatrix>)

    Parameters

    op

    pointer to the underlying object
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  • Designated initialiser from a constant pointer to the underlying C data type. This creates an instance without performing an unbalanced retain i.e., ownership is transferred to the Matrix instance.

    Declaration

    Swift

    @inlinable
public init(_ op: UnsafePointer<PangoMatrix>)

    Parameters

    op

    pointer to the underlying object
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  • Optional initialiser from a non-mutating gpointer to the underlying C data type. This creates an instance without performing an unbalanced retain i.e., ownership is transferred to the Matrix instance.

    Declaration

    Swift

    @inlinable
public init!(gpointer op: gpointer?)

    Parameters

    op

    gpointer to the underlying object
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  • Optional initialiser from a non-mutating gconstpointer to the underlying C data type. This creates an instance without performing an unbalanced retain i.e., ownership is transferred to the Matrix instance.

    Declaration

    Swift

    @inlinable
public init!(gconstpointer op: gconstpointer?)

    Parameters

    op

    pointer to the underlying object
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  • Optional initialiser from a constant pointer to the underlying C data type. This creates an instance without performing an unbalanced retain i.e., ownership is transferred to the Matrix instance.

    Declaration

    Swift

    @inlinable
public init!(_ op: UnsafePointer<PangoMatrix>?)

    Parameters

    op

    pointer to the underlying object
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  • Optional initialiser from the underlying C data type. This creates an instance without performing an unbalanced retain i.e., ownership is transferred to the Matrix instance.

    Declaration

    Swift

    @inlinable
public init!(_ op: UnsafeMutablePointer<PangoMatrix>?)

    Parameters

    op

    pointer to the underlying object
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  • Designated initialiser from the underlying C data type. PangoMatrix does not allow reference counting, so despite the name no actual retaining will occur. i.e., ownership is transferred to the Matrix instance.

    Declaration

    Swift

    @inlinable
public init(retaining op: UnsafeMutablePointer<PangoMatrix>)

    Parameters

    op

    pointer to the underlying object
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  • Reference intialiser for a related type that implements MatrixProtocol PangoMatrix does not allow reference counting.

    Declaration

    Swift

    @inlinable
public init<T>(_ other: T) where T : MatrixProtocol

    Parameters

    other

    an instance of a related type that implements MatrixProtocol
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  • Unsafe typed initialiser. Do not use unless you know the underlying data type the pointer points to conforms to MatrixProtocol.

    Declaration

    Swift

    @inlinable
public init<T>(cPointer p: UnsafeMutablePointer<T>)

    Parameters

    cPointer

    pointer to the underlying object
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  • Unsafe typed, retaining initialiser. Do not use unless you know the underlying data type the pointer points to conforms to MatrixProtocol.

    Declaration

    Swift

    @inlinable
public init<T>(retainingCPointer cPointer: UnsafeMutablePointer<T>)

    Parameters

    cPointer

    pointer to the underlying object
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  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to MatrixProtocol.

    Declaration

    Swift

    @inlinable
public init(raw p: UnsafeRawPointer)

    Parameters

    p

    raw pointer to the underlying object
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  • Unsafe untyped, retaining initialiser. Do not use unless you know the underlying data type the pointer points to conforms to MatrixProtocol.

    Declaration

    Swift

    @inlinable
public init(retainingRaw 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 MatrixProtocol.

    Declaration

    Swift

    @inlinable
public required init(raw p: UnsafeMutableRawPointer)

    Parameters

    p

    mutable raw pointer to the underlying object
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  • Unsafe untyped, retaining initialiser. Do not use unless you know the underlying data type the pointer points to conforms to MatrixProtocol.

    Declaration

    Swift

    @inlinable
public init(retainingRaw raw: UnsafeMutableRawPointer)

    Parameters

    raw

    mutable raw pointer to the underlying object
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  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to MatrixProtocol.

    Declaration

    Swift

    @inlinable
public init(opaquePointer p: OpaquePointer)

    Parameters

    p

    opaque pointer to the underlying object
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  • Unsafe untyped, retaining initialiser. Do not use unless you know the underlying data type the pointer points to conforms to MatrixProtocol.

    Declaration

    Swift

    @inlinable
public init(retainingOpaquePointer p: OpaquePointer)

    Parameters

    p

    opaque pointer to the underlying object
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