Struct EscposImage

pub struct EscposImage { /* private fields */ }

Image adapted to the printer.

The EscposImage structure keeps the original image, and contains a cache for constructed images for specific printer widths

Implementations

impl EscposImage

pub fn new( dynamic_image: DynamicImage, scale: u8, justification: Justification, ) -> Result<EscposImage, Error>

Pub fn creates a new EscposImage from a DynamicImage

The scale parameters goes from 0 to 255, controlling which percentage of the width should the image hold. The justification allows for a bit more specific image alignment.

pub fn cache_for(&mut self, width: u16)

Creates a cached image for the specified width

Useful method to decrease the number of operations done per printing, by skipping the scaling step for a specific printer.

pub fn feed(&self, width: u16) -> Vec<u8>

Trait Implementations

impl Clone for EscposImage

fn clone(&self) -> EscposImage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EscposImage

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EscposImage

fn deserialize<D>(deserializer: D) -> Result<EscposImage, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for EscposImage

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.