Enum FontFallback 

pub enum FontFallback {
    Deny,
    Explicit(String),
    InjectStandard,
    EmbedUnicode(UnicodeFont),
}

Font fallback policy. Fallback use is never silent: it is always visible in the per-edit result (font_substituted).

Variants

Deny

Fail with TextEditError::FontFallbackDenied (default).

Explicit(String)

Use the named font (must exist in the page resources).

InjectStandard

Inject a Helvetica/WinAnsiEncoding resource and use it.

Bounded by WinAnsi: nothing above U+00FF can be written this way.

EmbedUnicode(UnicodeFont)

Embed the caller-supplied font as a Type0/Identity-H composite font and write the replacement through it.

This is the only policy that can write scripts the document never contained — Polish, Greek, Cyrillic, CJK and so on — because the reachable characters are those of the supplied font rather than of a 256-entry encoding. See crate::unicode_font.

The font is embedded (subsetted to the glyphs actually used), so the caller must hold a licence permitting embedding.

Trait Implementations

impl Clone for FontFallback

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FontFallback

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for FontFallback

impl PartialEq for FontFallback

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for FontFallback

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for FontFallback