Enum QuietZone 

#[non_exhaustive]
pub enum QuietZone {
    Standard,
    Modules(u32),
    None,
}

How much blank space to leave around the symbol.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Standard

Whatever the symbology’s specification requires — 10 modules for Code 128. This is the default and the only setting that guarantees reliable scanning.

Modules(u32)

An explicit number of modules per side.

None

No quiet zone.

Only appropriate when the surrounding layout already guarantees blank space. A barcode printed flush against other content will frequently fail to scan.

Trait Implementations

impl Clone for QuietZone

fn clone(&self) -> QuietZone

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for QuietZone

impl Debug for QuietZone

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

Formats the value using the given formatter.

impl Default for QuietZone

fn default() -> QuietZone

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for QuietZone

Available on crate feature serde only.

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for QuietZone

impl Hash for QuietZone

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for QuietZone

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for QuietZone

Available on crate feature serde only.

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 QuietZone