Struct ModuleView 

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

Borrowed row-major view over a read-only QR module grid.

ModuleView is useful for adapters and tests that already have a module slice and need to pass it through the shared ModuleSource abstraction without allocating or implementing a bespoke wrapper type.

Implementations

impl<'a> ModuleView<'a>

pub const fn new(modules: &'a [Color], width: usize) -> Option<Self>

Creates a square module view from a row-major module slice.

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

pub const fn new_rect( modules: &'a [Color], width: usize, height: usize, ) -> Option<Self>

Creates a rectangular module view from a row-major module slice.

This keeps the same zero-copy storage contract as ModuleView::new, but allows callers to borrow a contiguous range of full rows.

Returns None when either dimension is zero or when modules.len() != width * height.

pub fn row_range(&self, start: usize, end: usize) -> Option<Self>

Returns a zero-copy view over a contiguous range of full rows.

The returned view keeps the same width and borrows a sub-slice of the original row-major module slice.

Trait Implementations

impl<'a> Clone for ModuleView<'a>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for ModuleView<'a>

impl<'a> Debug for ModuleView<'a>

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

Formats the value using the given formatter.

impl<'a> Eq for ModuleView<'a>

impl ModuleSource for ModuleView<'_>

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 ModuleView<'a>

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

Equality operator ==.

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

Inequality operator !=.

impl<'a> StructuralPartialEq for ModuleView<'a>