Enum PaperWidth 

pub enum PaperWidth {
    Mm58,
    Mm80,
}

Paper roll width.

use hardless_render::PaperWidth;
assert_eq!(PaperWidth::Mm80.columns(), (48, 64));
assert_eq!(serde_json::to_string(&PaperWidth::Mm58).unwrap(), "58");

Variants

Mm58

58 mm: 384 dots, 32 columns in Font A, 42 in Font B.

Mm80

80 mm: 576 dots, 48 columns in Font A, 64 in Font B (the default).

Implementations

impl PaperWidth

pub fn columns(self) -> (u32, u32)

Columns per line in Font A and Font B.

pub fn millimetres(self) -> u16

The width in millimetres.

pub fn dots(self) -> u32

The printable width in dots: 576 for 80 mm, 384 for 58 mm (12 dots per Font A column).

Trait Implementations

impl Clone for PaperWidth

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PaperWidth

impl Debug for PaperWidth

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

Formats the value using the given formatter.

impl Default for PaperWidth

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for PaperWidth

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for PaperWidth

impl From<PaperWidth> for u16

fn from(paper: PaperWidth) -> u16

Converts to this type from the input type.

impl Hash for PaperWidth

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 PaperWidth

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for PaperWidth

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 PaperWidth

impl TryFrom<u16> for PaperWidth

type Error = String

The type returned in the event of a conversion error.

fn try_from(mm: u16) -> Result<Self, String>

Performs the conversion.