Struct QrCodeRef 

pub struct QrCodeRef<'a> { /* private fields */ }

Borrowed QR symbol with module-grid data and QR metadata.

This is the zero-copy counterpart to an owned QR code. It carries the same metadata expected by QrSymbol while borrowing the row-major module slice from an existing symbol.

Implementations

impl<'a> QrCodeRef<'a>

pub const fn new( modules: &'a [Color], width: usize, version: Version, ec_level: EcLevel, ) -> Option<QrCodeRef<'a>>

Creates a borrowed QR symbol from row-major module data.

Returns None when width == 0 or modules.len() != width * width.

pub const fn module_view(self) -> ModuleView<'a>

Returns a read-only module view over the same borrowed modules.

Trait Implementations

impl<'a> Clone for QrCodeRef<'a>

fn clone(&self) -> QrCodeRef<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for QrCodeRef<'a>

impl<'a> Debug for QrCodeRef<'a>

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

Formats the value using the given formatter.

impl<'a> Eq for QrCodeRef<'a>

impl ModuleSource for QrCodeRef<'_>

fn get(&self, x: usize, y: usize) -> Color

Returns the color at (x, y).

fn width(&self) -> usize

Returns the number of modules per row.

fn height(&self) -> usize

Returns the number of module rows.

fn modules(&self) -> &[Color]

Returns all modules in row-major order.

fn row(&self, y: usize) -> &[Color]

Returns row y as a contiguous row-major slice.

fn is_empty(&self) -> bool

Returns whether this storage has no modules.

impl<'a> PartialEq for QrCodeRef<'a>

fn eq(&self, other: &QrCodeRef<'a>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl QrSymbol for QrCodeRef<'_>

fn version(&self) -> Version

Returns the encoded QR or Micro QR version.

fn error_correction_level(&self) -> EcLevel

Returns the encoded error-correction level.

fn quiet_zone(&self) -> u32

Returns the default quiet-zone width in modules for this symbol.

impl<'a> StructuralPartialEq for QrCodeRef<'a>