THotPDF Shaping Subset and ToUnicode Mapping Methods

THotPDF API 参考

本页说明与 Shaping subset and mapping methods 相关的 API 组。类型名、方法名和 Delphi 语法保持不翻译，便于和源码直接对应

function GetSyntheticCodepointForGID(GID: Word): Word;

procedure MarkSyntheticCpRTL(Cp: Word);

function IsRTLSyntheticCp(Cp: Word): Boolean;

function IsRTLSyntheticGID(GID: Word): Boolean;

Delphi 语法

procedure EnableShapingFeatureForSubset(const FeatureTag: AnsiString); overload;

procedure EnableShapingFeatureForSubset(Feature: THPDFShapingFeature); overload;

procedure MarkUnicodeGlyphUsed(GID: Word);

procedure RegisterToUnicodeReverseMapping(SubstCodepoint: Cardinal; const SourceCodepoints: array of Cardinal);

procedure ClearToUnicodeReverseMappings;

function ToUnicodeReverseMappingCount: Integer;

function AssignSyntheticCodepointForGID(GID: Word; out SyntheticCP: Word): Boolean;

涵盖的 API

使用说明

在注册合适的 Unicode 字体之后、输出文本之前使用这些 API。如果字体没有声明所需的 OpenType 表，查询会返回安全的无操作结果，或者输出路径回退到更简单的行为

另请参阅: AssignSyntheticCodepointForGID GSUB lookup methods Indic shaping methods