Crate qrcode_render 

Rendering pipeline for converting QR codes into visual output.

This module provides the Pixel and Canvas traits that abstract over different output formats, and the Renderer builder that drives the conversion from QR code data to a final image.

Supported formats

Module	Feature	Output type
image	image	PNG/JPEG via the image crate
svg	svg	SVG XML string
eps	eps	Encapsulated PostScript
html	html	HTML table or CSS Grid
pic	pic	PIC (troff) macros
string	—	Plain text with custom characters
unicode	—	Unicode block-element rendering

Custom rendering

Implement Pixel for your own type to render into a custom format. The Pixel trait defines how to create dark/light pixels and how to finalize a canvas into a concrete image.

Modules

ansi

ANSI terminal color rendering.

colors

Common color types and conversions for rendering.

plugin

Built-in renderer plugins backed by qrcode-render.

string

String rendering support.

unicode

UTF-8 rendering, with various pixel densities.

Structs

Renderer

A QR code renderer. This is a builder type which converts a bool-vector into an image.

Enums

Color

The color of a module.

RenderError

Errors returned by fallible render construction or rendering.

Constants

MAX_BUFFER_BYTES

Maximum combined buffer and output size estimated by the built-in buffered rendering backends (256 MiB).

Traits

Canvas

Rendering canvas of a QR code image.

Pixel

Abstraction of an image pixel.

RenderTemplate

Styling data that can be applied to a Renderer with Renderer::template.

StyledPixel

A Pixel constructible from a CSS-style hex color string ("#rrggbb" or "#rgb"), used by Renderer::template to apply a QrTemplate.