THotPDF Indic Reorder and GSUB Shaping

THotPDF Indic Reorder and GSUB Shaping – metody

THotPDF API reference

Dokumentuje rozhraní pro přeřazení Indic a tvarování GSUB včetně pomocných metod přeřazení pro jednotlivá písma, dispatcheru a producerské cesty Indic GSUB z v2.167

Delphi syntax

function ApplyIndicReorder(const Wide: UnicodeString): UnicodeString; overload;

function ApplyIndicReorder(const Wide: UnicodeString; const Features: THPDFShapingFeatures): UnicodeString; overload;

function ApplyIndicShaping(const S: UnicodeString): UnicodeString;

function IndicShapeToGIDs(const S: UnicodeString): TGSUBLookupArray;

function ApplyDevanagariReorder(const Wide: UnicodeString): UnicodeString;

function ApplyBengaliReorder(const Wide: UnicodeString): UnicodeString;

function ApplyGujaratiReorder(const Wide: UnicodeString): UnicodeString;

function ApplyTamilReorder(const Wide: UnicodeString): UnicodeString;

function ApplyTeluguReorder(const Wide: UnicodeString): UnicodeString;

function ApplyKannadaReorder(const Wide: UnicodeString): UnicodeString;

function ApplyMalayalamReorder(const Wide: UnicodeString): UnicodeString;

function ApplySinhalaReorder(const Wide: UnicodeString): UnicodeString;

function ApplyKhmerReorder(const Wide: UnicodeString): UnicodeString;

function ApplyMyanmarReorder(const Wide: UnicodeString): UnicodeString;

Covered APIs

API	Poznámky k použití
`ApplyIndicReorder`	Dispatches script-specific Indic reorder helpers before GSUB shaping or text output. The parameterless form keeps full-script coverage; the overload taking a `THPDFShapingFeatures` set reorders only the scripts whose shaping flag is present, matching the per-flag isolation applied during text output
`ApplyIndicShaping`	Applies reorder plus the Indic GSUB feature chain and returns synthetic-codepoint text for output
`IndicShapeToGIDs`	Returns the shaped glyph-ID sequence for an Indic string without emitting PDF text
`GetDevanagariCategory`	Classifies Devanagari codepoints for syllable and reorder decisions
`GetBengaliCategory`	Classifies Bengali codepoints for Indic reorder decisions
`GetGujaratiCategory`	Classifies Gujarati codepoints for Indic reorder decisions
`GetTamilCategory`	Classifies Tamil codepoints for Indic reorder decisions
`GetTeluguCategory`	Classifies Telugu codepoints for Indic reorder decisions
`GetKannadaCategory`	Classifies Kannada codepoints for Indic reorder decisions
`GetMalayalamCategory`	Classifies Malayalam codepoints for Indic reorder decisions
`GetSinhalaCategory`	Classifies Sinhala codepoints for Indic reorder decisions
`GetKhmerCategory`	Classifies Khmer codepoints for the shared complex-script reorder path
`GetMyanmarCategory`	Classifies Myanmar codepoints for the shared complex-script reorder path
`sfIndicShaping`	Runs the conservative Indic syllable reorder path before text output without forcing full GSUB feature application
`sfIndicGSUB`	Runs the Indic reorder and GSUB feature chain, then emits shaped glyph IDs through synthetic codepoints

Poznámky k použití

sfIndicShaping provádí výstup pouze s přeřazením a zůstává konzervativní volbou. sfIndicGSUB přeřadí každou slabiku, použije řetězec funkcí OpenType Indic, vypíše vytvarovaná GID přes syntetické kódové body a přejde na cestu přeřazení, když písmu chybí příslušný skript GSUB

Viz také: International Script Shaping ShapingFeatures GSUB lookup methods