QR Code Generator

This crate provides functions to generate QR Code matrices and images in RAW, PNG and SVG formats.

Examples

Encode any data to a QR Code matrix which is Vec<Vec<bool>>.

```rust extern crate qrcode_generator;

use qrcode_generator::QrCodeEcc;

let result: Vec> = qrcodegenerator::tomatrix("Hello world!", QrCodeEcc::Low).unwrap();

println!("{:?}", result); ```

Encode any data to a PNG image stored in a Vec instance.

```rust extern crate qrcode_generator;

use qrcode_generator::QrCodeEcc;

let result: Vec = qrcodegenerator::topngtovec("Hello world!", QrCodeEcc::Low, 1024).unwrap();

println!("{:?}", result); ```

Encode any data to a PNG image stored in a file.

```rust extern crate qrcode_generator;

use qrcode_generator::QrCodeEcc;

qrcodegenerator::topngtofile("Hello world!", QrCodeEcc::Low, 1024, "tests/data/file_output.png").unwrap(); ```

Encode any data to a SVG image stored in a String instance.

```rust extern crate qrcode_generator;

use qrcode_generator::QrCodeEcc;

let result: String = qrcodegenerator::tosvgtostring("Hello world!", QrCodeEcc::Low, 1024, None::<&str>).unwrap();

println!("{:?}", result); ```

Encode any data to a SVG image stored in a file.

```rust extern crate qrcode_generator;

use qrcode_generator::QrCodeEcc;

qrcodegenerator::tosvgtofile("Hello world!", QrCodeEcc::Low, 1024, None::<&str>, "tests/data/file_output.png").unwrap(); ```

Low-level Usage

Raw Image Data

The to_image and to_image_buffer functions can be used, if you want to modify your image.

Segments

Every to_* function has a corresponding _from_segments function. You can concatenate segments by using different encoding methods, such as numeric, alphanumeric or binary to reduce the size (level) of your QR code matrix/image.

```rust extern crate qrcode_generator;

use qrcode_generator::{QrCodeEcc, QrSegment};

let first = "1234567";

let second = "ABCDEFG";

let firstchars: Vec = first.chars().collect(); let secondchars: Vec = second.chars().collect();

let segments = [QrSegment::makenumeric(&firstchars), QrSegment::makealphanumeric(&secondchars)];

let result: Vec> = qrcodegenerator::tomatrixfromsegments(&segments, QrCodeEcc::Low).unwrap();

println!("{:?}", result); ```

More segments optimization apporaches: magiclen/qrcode-segments-optimizer

No Std

Disable the default features to compile this crate without std.

toml [dependencies.qrcode-generator] version = "*" default-features = false

Crates.io

https://crates.io/crates/qrcode-generator

Documentation

https://docs.rs/qrcode-generator

License

MIT