CoreText Namespace

The CoreText namespace provides low-level classes for laying out and rendering text.

Classes

CTFont	Represents a CoreText Font.
CTFontCollection	Font collections are the standard mechanism used to enumerate fonts descriptors.
CTFontCollectionOptionKey	A class whose static property can be used as a key for the NSDictionary used by CTFontCollectionOptions.
CTFontCollectionOptions	Options that can be used for creating CTFontCollection objects.
CTFontDescriptor	Font Descriptors contain a description of font features that can identify a font.
CTFontDescriptorAttributeKey	A valid key for use with CTFontDescriptor attribute properties.
CTFontDescriptorAttributes	Strongly typed class that contains font attributes.
CTFontFeatureAllTypographicFeatures	A CTFontFeatureSelectors that represents all type features.
CTFontFeatureAlternateKana	A CTFontFeatureSelectors for alternate kana.
CTFontFeatureAnnotation	A CTFontFeatureSelectors that describe feature annotations.
CTFontFeatureCaseSensitiveLayout	A CTFontFeatureSelectors that describe features related to case-sensitive spacing or layout.
CTFontFeatureCharacterAlternatives	A CTFontFeatureSelectors that describe a feature allowing character alternatives.
CTFontFeatureCharacterShape	A CTFontFeatureSelectors that describe features related to character shapes such as Hojo Kanji forms, JIS 78 Forms, etc..
CTFontFeatureCJKRomanSpacing	A CTFontFeatureSelectors that describe features related to Chines, Japanese, and Korean typography.
CTFontFeatureCJKSymbolAlternatives	A CTFontFeatureSelectors that describe features related to Chines, Japanese, and Korean typography.
CTFontFeatureCJKVerticalRomanPlacement	A CTFontFeatureSelectors that describe features related to Chines, Japanese, and Korean typography.
CTFontFeatureContextualAlternates	A CTFontFeatureSelectors that describe features related to swash alternatives.
CTFontFeatureCursiveConnection	A CTFontFeatureSelectors that describe features related to the connection of cursive letters.
CTFontFeatureDesignComplexity	A CTFontFeatureSelectors that describe features related to design-level complexity.
CTFontFeatureDiacritics	A CTFontFeatureSelectors that describe features related to the visibility and composition of diacritical marks.
CTFontFeatureFractions	A CTFontFeatureSelectors that describe features related to how fractions should be displayed.
CTFontFeatureIdeographicAlternatives	A CTFontFeatureSelectors that describe features related to ideographic alternatives.
CTFontFeatureIdeographicSpacing	A CTFontFeatureSelectors that describe features related to ideographic spacing.
CTFontFeatureItalicCJKRoman	A CTFontFeatureSelectors that describe features related to Chines, Japanese, and Korean italicized text.
CTFontFeatureKanaSpacing	A CTFontFeatureSelectors that describe features related to Kana spacing.
CTFontFeatureKey	A class whose static properties can be used as keys for the NSDictionary used by CTFontFeatures.
CTFontFeatureLetterCase	A CTFontFeatureSelectors that describe features related to capitalization options such as initial capitalization.
CTFontFeatureLigatures	A CTFontFeatureSelectors that describe whether ligature features are on or off.
CTFontFeatureLinguisticRearrangementConnection	A CTFontFeatureSelectors that describe whether linguistic rearrangement is on or off.
CTFontFeatureLowerCase	A CTFontFeatureSelectors that describe features related to how lower-case letters are rendered.
CTFontFeatureMathematicalExtras	A CTFontFeatureSelectors that describe features related to mathematical formulae.
CTFontFeatureNumberCase	A CTFontFeatureSelectors that describe features related to the display of capital numbers.
CTFontFeatureNumberSpacing	A CTFontFeatureSelectors that describe features related to spacing of numbers.
CTFontFeatureOrnamentSets	A CTFontFeatureSelectors that describe features related to case-sensitive spacing or layout.
CTFontFeatureOverlappingCharacters	A CTFontFeatureSelectors that allow or disallow characters to overlap.
CTFontFeatureRubyKana	A CTFontFeatureSelectors that describe features related to applications of rubies to Kana.
CTFontFeatures	Encapsulates the features of a CTFont.
CTFontFeatureSelectorKey	A class whose static properties can be used as keys for the NSDictionary used by CTFontFeatureSelectors.
CTFontFeatureSelectors	Encapsulates a font feature-dictionary.
CTFontFeatureSettings	The feature settings of a CTFont or CTFontDescriptorAttributes.
CTFontFeatureSmartSwash	A CTFontFeatureSelectors that describe features related to smart swashes.
CTFontFeatureStyleOptions	A CTFontFeatureSelectors that describe features related to font features such as illuminated capitals and engraved text.
CTFontFeatureStylisticAlternatives	A CTFontFeatureSelectors that describe features related to alternative styles.
CTFontFeatureTextSpacing	A CTFontFeatureSelectors that describe features related to text spacing.
CTFontFeatureTransliteration	A CTFontFeatureSelectors that describe features related to transliteration.
CTFontFeatureTypographicExtras	A CTFontFeatureSelectors that describe features related to typographic extras such as interrobangs, conversion of dashes to em- or en-dashes, etc..
CTFontFeatureUnicodeDecomposition	A CTFontFeatureSelectors that describe features related to how Unicode is decomposed.
CTFontFeatureUpperCase	A CTFontFeatureSelectors that describe features related to how upper-case letters should be displayed.
CTFontFeatureVerticalPosition	A CTFontFeatureSelectors that describe features related to vertical positioning.
CTFontFeatureVerticalSubstitutionConnection	A CTFontFeatureSelectors that describe features related to vertical substitution.
CTFontManager	Manages the central CoreText Font System.
CTFontManager.Notifications	Observer for receiving notifications when fonts are added to the registry.
CTFontManagerErrorExtensions	Extension methods for the CoreText.CTFontManagerError enumeration.
CTFontTraitKey	A class whose static properties can be used as keys for the NSDictionary used by CTFontTraits.
CTFontTraits	The standard traits for a CTFontDescriptor.
CTFontVariation	Encapsulates a font-variation dictionary.
CTFontVariationAxes	Encapsulates a font-variation-axis dictionary.
CTFontVariationAxisKey	A class whose static properties can be used as keys for the NSDictionary used by CTFontVariationAxes.
CTFrame	A rectangular area containing lines of text.
CTFrameAttributeKey	A class whose static properties can be used as keys for the NSDictionary used by CTFrameAttributes.
CTFrameAttributes	Encapsulates the attributes used in the creation of a CTFrame.
CTFramesetter	Lays out type in a rectangular frame.
CTGlyphInfo	Provides the ability to override the Unicode-to-glyph mapping for a CTFont.
CTLine	A line of text, comprising an array of CTRuns.
CTParagraphStyle	Describes the style of paragraphs.
CTParagraphStyleSettings	A class that can be used to override elements of a CTParagraphStyle.
CTRun	A glyph run. That is, a series of consecutive glyphs with the same attributes and direction.
CTRunDelegate	A delegate object that can be used to handle CTRunDelegateOperations on a CTRun.
CTRunDelegateOperations	A class that represents the operations possible on a CTRunDelegate.
CTStringAttributeKey	A class whose static properties can be used as keys for the NSDictionary used by CTStringAttributes.
CTStringAttributes	Specifies the attributes of a CTRun.
CTTextTab	Represents a tab in a CTParagraphStyle.
CTTextTabOptionKey	A class whose static properties can be used as keys for the NSDictionary used by CTTextTabOptions.
CTTextTabOptions	Options relating to a CTTextTab.
CTTypesetter	A class that performs line layout.
CTTypesetterOptionKey	A class whose static properties can be used as keys for the NSDictionary used by CTTypesetterOptions.
CTTypesetterOptions	Options applicable to a T:CoreText:CTTypesetter object.

Enums

CTBaselineClass	The kind of baselines supported when typesetting text.
CTBaselineFont	An enumeration whose values specify the whether the baseline font is from the original font or a reference font.
CTCharacterCollection	A class whose static fields specify character collections.
CTFontDescriptorMatchingState	An enumeration whose values can be used as parameters for the MatchFontDescriptors(CTFontDescriptor[], NSSet, Func<CTFontDescriptorMatchingState,IntPtr,Boolean>) method.
CTFontFeatureAllTypographicFeatures.Selector	An enumeration whose values can be used as arguments for WithFeature(CTFontFeatureVerticalSubstitutionConnection+Selector).
CTFontFeatureAlternateKana.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureAnnotation.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureCaseSensitiveLayout.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureCharacterAlternatives.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureCharacterShape.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureCJKRomanSpacing.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureCJKSymbolAlternatives.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureCJKVerticalRomanPlacement.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureContextualAlternates.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureCursiveConnection.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureDesignComplexity.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureDiacritics.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureFractions.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureIdeographicAlternatives.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureIdeographicSpacing.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureItalicCJKRoman.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureKanaSpacing.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureLetterCase.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureLigatures.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureLinguisticRearrangementConnection.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureLowerCase.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureMathematicalExtras.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureNumberCase.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureNumberSpacing.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureOrnamentSets.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureOverlappingCharacters.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureRubyKana.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureSmartSwash.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureStyleOptions.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureStylisticAlternatives.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureTextSpacing.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureTransliteration.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureTypographicExtras.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureUnicodeDecomposition.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureUpperCase.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureVerticalPosition.Selector	An enumeration whose values are returned by Feature.
CTFontFeatureVerticalSubstitutionConnection.Selector	An enumeration whose values are returned by Feature.
CTFontFormat	Font format.
CTFontManagerAutoActivation	An enumeration whose values specify values for auto-activation of fonts.
CTFontManagerError	An enumeration whose values specify errors relating to operations on CTFontManager.
CTFontManagerScope	An enumeration whose values specify the scope for font registration.
CTFontNameKey	An enumeration whose values specify constants providing access to names associated with a CTFont.
CTFontOptions	Options used when creating new instances of the CTFont class.
CTFontOrientation	An enumeration whose values specify the orientation of a CTFont.
CTFontPriority	An enumeration whose values specify the priority of a CTFont.
CTFontStylisticClass	An enumeration whose values specify the serif style of a CTFont.
CTFontSymbolicTraits	Describes the style of a font.
CTFontTable	An enumeration whose values represent tags for accessing font-table data.
CTFontTableOptions	An enumeration whose values can be used as flags for options relating to font tables.
CTFontUIFontType	An enumeration whose values specify the intended use of a font. Used with C:CoreText.CTFont(CoreTextCTFontUIType, System.Single, System.String)
CTFramePathFillRule	An enumeration whose values specify the fill rule used by a CTFrame.
CTFrameProgression	An enumeration whose values can be used as flags with the Progression property.
CTLigatureFormation	An enumeration whose values specify the importance of ligatures in a T:CoreText.CTString.
CTLineBoundsOptions	The kind of bounds computation that we want to perform on a CTLine.
CTLineBreakMode	An enumeration whose values specify line-breaking options.
CTLineTruncation	An enumeration whose values specify valid options for line truncation.
CTRunStatus	An enumeration whose values describe the Status of a CTRun.
CTSuperscriptStyle	An enumeration whose values describe the style of super- and sub- -scripts.
CTTextAlignment	An enumeration whose values specify options for text alignment.
CTUnderlineStyle	Specifies the style of an underline ornament.
CTUnderlineStyleModifiers	An enumeration whose values specify options for CTUnderlineStyles.
CTWritingDirection	An enumeration whose values can be used as flags indicating writing directions.
FontFeatureGroup	An enumeration whose values specify various types of font features.

Delegates

CTLine.CaretEdgeEnumerator

Remarks

Provides the low-level framework for high quality typography on iOS and OSX.

This framework is indirectly used by higher level frameworks like N:UIKit, AppKit, WebKit (UIWebView and N:CoreAnimation. Developers can resort to CoreText when they need finer control over text layout than the one provided by the high level frameworks.