THotPDF GPOS Kerning and Placement Methods

THotPDF API 參考

本頁說明與 GPOS kerning and placement methods 相關的 API 群組。型別名稱、方法名稱與 Delphi 語法保留原文，方便直接對照原始碼

function ApplyMarkToLigatureShaping(const Wide: UnicodeString): UnicodeString;

Delphi 語法

function HasGPOSKerning: Boolean;

function GetGPOSPairAdjustment(FirstGID, SecondGID: Word): Integer;

function GetGPOSPairAdjustment(FirstGID, SecondGID: Word; out AXPlacement, AYPlacement, AYAdvance: Integer): Integer;

function GetGPOSContextualKernRun(const GIDs: array of Word): TArray<Integer>;

function HasGPOSVerticalKern: Boolean;

function GetGPOSVerticalKern(FirstGID, SecondGID: Word): Integer;

function GetGPOSMarkOffset(BaseGID, MarkGID: Word; out DX, DY: Integer): Boolean;

function GetGPOSMarkMarkOffset(BaseMarkGID, AttachMarkGID: Word; out DX, DY: Integer): Boolean;

function HasGPOSCursive: Boolean;

function GetGPOSCursiveAnchors(GID: Word; out EntryX, EntryY, ExitX, ExitY: Integer; out HasEntry, HasExit: Boolean): Boolean;

function GetGPOSMarkToLigatureOffset(LigGID: Word; ComponentIndex: Integer; MarkGID: Word; out DX, DY: Integer): Boolean;

涵蓋的 API

使用說明

請在註冊合適的 Unicode 字型之後、輸出文字之前使用這些 API。如果字型沒有宣告所需的 OpenType 表，查詢會回傳安全的無操作結果，或讓輸出路徑回到較簡單的行為

另請參閱: ShapingFeatures OpenType GSUB Engine Automatic Shaping Pipeline