Trait ModuleStorage 

pub trait ModuleStorage {
    // Required methods
    fn get(&self, x: usize, y: usize) -> Color;
    fn set(&mut self, x: usize, y: usize, color: Color);
    fn width(&self) -> usize;
    fn height(&self) -> usize;
    fn modules(&self) -> &[Color];

    // Provided method
    fn is_empty(&self) -> bool { ... }
}

Read/write access to a QR module grid.

Rendering and inspection APIs should prefer ModuleSource when they only need read access. This trait remains available for in-place mutation and testing utilities.

Required Methods

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

Returns the color at (x, y).

Panics

Implementations may panic when x >= width() or y >= height().

fn set(&mut self, x: usize, y: usize, color: Color)

Sets the color at (x, y).

Panics

Implementations may panic when x >= width() or y >= height().

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.

Provided Methods

fn is_empty(&self) -> bool

Returns whether this storage has no modules.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl ModuleStorage for ModuleGrid

impl ModuleStorage for QrCode