|
Core Text is a Core Foundation style API in Mac OS X, first introduced in Mac OS X 10.4 Tiger, made public in Mac OS X 10.5 Leopard, and introduced for the iPad with iPhone SDK 3.2. Exposing a C API, it replaces the text rendering abilities of the now-deprecated QuickDraw and ATSUI frameworks in previous versions of Mac OS X. According to Apple, Core Text is "designed for high performance and ease of use" and its layout API is "simple, consistent, and tightly integrated with Core Foundation, Core Graphics, and Cocoa."〔(Core Text Programming Guide: Core Text Overview )〕 == Features == Core Text provides the following opaque types: * CTFramesetter - creates CTFrame objects from given attributed string object and CGPath object using CTTypesetter. * CTTypesetter - performs line layouts; e.g., line breaking * CTFrame - represents an array of lines (i.e., CTLine objects). * CTLine - represents an array of glyph runs. * CTRun - an ordered collection of glyphs sharing the same attribute. * CTFont - represents a font. 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Core Text」の詳細全文を読む スポンサード リンク
|