Trait qrcode::render::Canvas

pub trait Canvas: Sized {
    type Pixel: Sized;
    type Image: Sized;

    // Required methods
    fn new(
        width: u32,
        height: u32,
        dark_pixel: Self::Pixel,
        light_pixel: Self::Pixel
    ) -> Self;
    fn draw_dark_pixel(&mut self, x: u32, y: u32);
    fn into_image(self) -> Self::Image;

    // Provided method
    fn draw_dark_rect(&mut self, left: u32, top: u32, width: u32, height: u32) { ... }
}

Rendering canvas of a QR code image.

Required Associated Types

type Pixel: Sized

type Image: Sized

Required Methods

fn new( width: u32, height: u32, dark_pixel: Self::Pixel, light_pixel: Self::Pixel ) -> Self

Constructs a new canvas of the given dimensions.

fn draw_dark_pixel(&mut self, x: u32, y: u32)

Draws a single dark pixel at the (x, y) coordinate.

fn into_image(self) -> Self::Image

Finalize the canvas to a real image.

Provided Methods

fn draw_dark_rect(&mut self, left: u32, top: u32, width: u32, height: u32)

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl<P: Pixel + 'static> Canvas for (P, ImageBuffer<P, Vec<P::Subpixel>>)

type Pixel = P

type Image = ImageBuffer<P, Vec<<P as Pixel>::Subpixel>>

fn new(width: u32, height: u32, dark_pixel: P, light_pixel: P) -> Self

fn draw_dark_pixel(&mut self, x: u32, y: u32)

fn into_image(self) -> ImageBuffer<P, Vec<P::Subpixel>>

Implementors

impl Canvas for Canvas1x2

type Pixel = Dense1x2

type Image = String