CreateOpenTypeFontVariation

Text, fonts, variable fonts

Opis

Instantizuje variabilný font OpenType CFF2 na požadovaných súradniciach design osí a výsledný statický CFF font pridá do aktuálneho dokumentu

Syntax

Delphi

Function TPDFlib.CreateOpenTypeFontVariation(FontID: Integer; Const AxisCoordinates: WideString): Integer;

Parameters

FontID	A CFF2 variable-font handle returned by an OpenType font creation or loading API
AxisCoordinates	Comma- or semicolon-separated `tag=value` pairs such as `wght=700,wdth=75`; omitted axes use their defaults and values outside a declared range are clamped

Return values

Returns a positive font handle and selects it on success, or 0 for an invalid handle, non-CFF2 font, unknown or malformed coordinate, unsupported CFF2 structure or malformed variation data

Poznámky

The instantiator evaluates vsindex and blend against the CFF2 variation store, expands local and global subroutines, applies HVAR horizontal metrics and supported MVAR global metrics, and synchronizes common style axesThe output is a checksum-correct CID-keyed CFF1 OpenType font with static charstrings and metrics; stale variation, hint-program and signature tables are removed

Rekurzia CharString, využitie operandového zásobníka, počet operácií, veľkosti INDEX a veľkosť výstupu sa ohraničia pred alokáciou, takže deformovaný vstup zlyhá bez vrátenia čiastočného fontuVrátený font funguje s kreslením, vkladaním, CFF subsetting a

SaveFontToFile; GetFontVariationAxes returns 0 for itLoading a CFF2 font directly selects its default static instance while retaining the original variable program for later calls to this API

Use

CreateTrueTypeFontVariation for variable fonts that use glyf outlines

Pozri tiež

GetFontVariationAxes, CreateTrueTypeFontVariation, AddOpenTypeFontFromFile, SaveFontToFile