NSGlyphInfo Class Reference

Inherits from	NSObject
Conforms to	NSCoding NSCopying NSObject (NSObject)
Framework	/System/Library/Frameworks/AppKit.framework
Availability	Available in Mac OS X v10.2 and later.
Companion guide	Font Handling
Declared in	NSGlyphInfo.h

Overview

An NSGlyphInfo object represents a glyph attribute value (NSGlyphInfoAttributeName) in an attributed string. NSGlyphInfo allows you to override a font’s specified mapping from Unicode to the glyph ID. Overriding the mapping allows you to specify a variant glyph for a given character if the font contains multiple variations for that character or to specify a glyph that doesn’t have a standard mapping (such as some ligature glyphs).

Adopted Protocols

NSCoding

Tasks

Creating an NSGlyphInfo Object

Getting Information About an NSGlyphInfo Object

Class Methods

glyphInfoWithCharacterIdentifier:collection:baseString:

Instantiates and returns an NSGlyphInfo object using a character identifier and a character collection.

+ (NSGlyphInfo *)glyphInfoWithCharacterIdentifier:(NSUInteger)cid collection:(NSCharacterCollection)characterCollection baseString:(NSString *)theString

Parameters

cid: A character identifier.
characterCollection: A string constant representing a character collection. Possible values for characterCollection are described in “Constants.”
theString: The part of the attributed string the returned instance is intended to override.

Return Value

The created NSGlyphInfo object or nil if the object couldn't be created.

Availability

Available in Mac OS X v10.2 and later.

Declared In

NSGlyphInfo.h

glyphInfoWithGlyph:forFont:baseString:

Instantiates and returns an NSGlyphInfo object using a glyph index and a specified font.

+ (NSGlyphInfo *)glyphInfoWithGlyph:(NSGlyph)glyph forFont:(NSFont *)font baseString:(NSString *)theString

Parameters

glyph: The identifier of the glyph.
font: The font object to be associated with the returned NSGlyphInfo object,
theString: The part of the attributed string the returned instance is intended to override.

Return Value

The created NSGlyphInfo object or nil if the object couldn't be created.

Availability

Available in Mac OS X v10.2 and later.

Declared In

NSGlyphInfo.h

glyphInfoWithGlyphName:forFont:baseString:

Instantiates and returns an NSGlyphInfo object using a glyph name and a specified font.

+ (NSGlyphInfo *)glyphInfoWithGlyphName:(NSString *)glyphName forFont:(NSFont *)font baseString:(NSString *)theString

Parameters

glyphName: The name of the glyph.
font: The font object to be associated with the returned NSGlyphInfo object,
theString: The part of the attributed string the returned instance is intended to override.

Return Value

The created NSGlyphInfo object or nil if the object couldn't be created.

Availability

Available in Mac OS X v10.2 and later.

Declared In

NSGlyphInfo.h

Instance Methods

characterCollection

Returns an NSCharacterCollection value specifying the glyph–to–character identifier mapping of the receiver.

- (NSCharacterCollection)characterCollection

Discussion

This method returns NSIdentityMappingCharacterCollection if the receiver was instantiated with either an NSGlyph identifier or a glyph name. It returns other possible values if the receiver was instantiated using glyphInfoWithCharacterIdentifier:collection:baseString:. These constants are described in NSCharacterCollection.

Availability

Available in Mac OS X v10.2 and later.

Declared In

NSGlyphInfo.h

characterIdentifier

Returns the receiver’s character identifier (CID).

- (NSUInteger)characterIdentifier

Discussion

If the receiver was instantiated with a method other than glyphInfoWithCharacterIdentifier:collection:baseString:, this method returns NULL.

Availability

Available in Mac OS X v10.2 and later.

Declared In

NSGlyphInfo.h

glyphName

Returns the receiver’s glyph name.

- (NSString *)glyphName

Discussion

If the receiver was instantiated with a method other than glyphInfoWithGlyphName:forFont:baseString:, this method returns nil.

Availability

Available in Mac OS X v10.2 and later.

Declared In

NSGlyphInfo.h

Constants

NSCharacterCollection

The following values specify the mapping of character identifiers to glyphs, and are returned by characterCollection.

typedef enum {
   NSIdentityMappingCharacterCollection = 0,
   NSAdobeCNS1CharacterCollection       = 1,
   NSAdobeGB1CharacterCollection        = 2,
   NSAdobeJapan1CharacterCollection     = 3,
   NSAdobeJapan2CharacterCollection     = 4,
   NSAdobeKorea1CharacterCollection     = 5,
} NSCharacterCollection;