Metode nadomestnih pisav THotPDF
Konfigurira urejene nadomestne pisave in izpostavi diagnostike pokritosti ter navpičnih metrik
Deklaracije
procedure SetFontFallbackChain(Script: THPDFFontScript;
const FontNames: array of AnsiString);
procedure ClearFontFallbackChain(Script: THPDFFontScript);
procedure ClearAllFontFallbackChains;
function FontFallbackCount(Script: THPDFFontScript): Integer;
function FontFallbackName(Script: THPDFFontScript;
Index: Integer): AnsiString;
function FontScriptForCodePoint(CodePoint: Cardinal): THPDFFontScript;
function ResolveFontForCodePoint(CodePoint: Cardinal;
const PrimaryFontName: AnsiString;
out ResolvedFontName: AnsiString): boolean; overload;
function ResolveFontForCodePoint(CodePoint: Cardinal;
const PrimaryFontName: AnsiString; const FontStyle: TFontStyles;
out ResolvedFontName: AnsiString): boolean; overload;
function AnalyzeUnresolvedGlyphs(const Text: WideString;
const PrimaryFontName: AnsiString): THPDFUnresolvedGlyphInfoArray; overload;
function AnalyzeUnresolvedGlyphs(const Text: WideString;
const PrimaryFontName: AnsiString; const FontStyle: TFontStyles):
THPDFUnresolvedGlyphInfoArray; overload;
function GetUnresolvedGlyphs: THPDFUnresolvedGlyphInfoArray;
procedure ClearUnresolvedGlyphs;
function GetVerticalGlyphMetrics(CodePoint: Cardinal;
out AdvanceY, OriginY: Integer): boolean;
procedure SetVerticalDefaultMetrics(AdvanceY, OriginY: Integer);
Tipi
THPDFFontScript = (hfsCommon, hfsLatin, hfsGreek, hfsCyrillic,
hfsHebrew, hfsArabic, hfsIndic, hfsSoutheastAsian, hfsCJK,
hfsKana, hfsHangul, hfsEmoji, hfsOther);
THPDFUnresolvedGlyphInfo = record
CodePoint: Cardinal;
FontName: AnsiString;
Script: THPDFFontScript;
SuggestedFonts: AnsiString;
end;
THPDFUnresolvedGlyphInfoArray = array of THPDFUnresolvedGlyphInfo;
Teme članov
- SetFontFallbackChain
- ClearFontFallbackChain
- ClearAllFontFallbackChains
- FontFallbackCount
- FontFallbackName
- FontScriptForCodePoint
- ResolveFontForCodePoint
- AnalyzeUnresolvedGlyphs
- GetUnresolvedGlyphs
- ClearUnresolvedGlyphs
- GetVerticalGlyphMetrics
- SetVerticalDefaultMetrics
- VerticalDefaultAdvanceY
- VerticalDefaultOriginY
Vedenje
ResolveFontForCodePointnajprej preveri primarno pisavo, nato ujemajočo se verigo skript, natohfsCommon- Rezultat je resničen le, ko nameščena pisava razreši skalar brez zamenjave pisave GDI
- Ponavljajoče preizkuse družin, slogov pisav in skalarjev uporabljajo omejen predpomnilnik z 1024 vnosi, ki se razveljavi po registraciji zasebne pisave
- Različice z izrecnim slogom pregledajo izbrano pisavo krepko in ležeče; izvirne različice ohranijo vedenje z navadno pisavo
AnalyzeUnresolvedGlyphsdeduplicira ponavljajoče se pare nerešenega skalarja in primarne pisaveGetVerticalGlyphMetricsvrne registrirane navpične metrike OpenType, kadar so na voljo, sicer pa izpostavi nastavljene privzete vrednostiSetVerticalDefaultMetricszahteva pozitiven napredek v glifnem prostoru 1000 enot