Function

CTFontDescriptorCreateMatchingFontDescriptor(_:_:)

Returns the single preferred matching font descriptor based on the original descriptor and system precedence.

Declaration

func CTFontDescriptorCreateMatchingFontDescriptor(_ descriptor: CTFontDescriptor, _ mandatoryAttributes: CFSet?) -> CTFontDescriptor?

Parameters

descriptor

The original font descriptor.

mandatoryAttributes

A set of attribute keys which must be identically matched in any returned font descriptors. May be NULL.

Return Value

A retained, normalized font descriptor matching the attributes present in descriptor.

Discussion

The original descriptor may be returned in normalized form. The caller is responsible for releasing the result. In the context of font descriptors, normalized infers that the input values were matched up with actual existing fonts, and the descriptors for those existing fonts are the returned normalized descriptors.

See Also

Creating Font Descriptors

func CTFontDescriptorCreateWithNameAndSize(CFString, CGFloat) -> CTFontDescriptor

Creates a new font descriptor with the provided PostScript name and size.

func CTFontDescriptorCreateWithAttributes(CFDictionary) -> CTFontDescriptor

Creates a new font descriptor reference from a dictionary of attributes.

func CTFontDescriptorCreateCopyWithAttributes(CTFontDescriptor, CFDictionary) -> CTFontDescriptor

Creates a copy of the original font descriptor with new attributes.

func CTFontDescriptorCreateCopyWithVariation(CTFontDescriptor, CFNumber, CGFloat) -> CTFontDescriptor

Creates a copy of the original font descriptor with a new variation instance.

func CTFontDescriptorCreateMatchingFontDescriptors(CTFontDescriptor, CFSet?) -> CFArray?

Returns an array of normalized font descriptors matching the provided descriptor.