117 lines
3 KiB
Markdown
117 lines
3 KiB
Markdown
qrcode-rust
|
|
===========
|
|
|
|
[](https://travis-ci.org/kennytm/qrcode-rust)
|
|
[](https://coveralls.io/github/kennytm/qrcode-rust?branch=coveralls)
|
|
[](https://crates.io/crates/qrcode)
|
|
[](./LICENSE-APACHE.txt)
|
|
|
|
QR code and Micro QR code encoder in Rust. [Documentation](https://docs.rs/qrcode).
|
|
|
|
Cargo.toml
|
|
----------
|
|
|
|
```toml
|
|
[dependencies]
|
|
qrcode = "0.5"
|
|
```
|
|
|
|
The default settings will depend on the `image` crate. If you don't need image generation capability, disable the `default-features`:
|
|
|
|
```toml
|
|
[dependencies]
|
|
qrcode = { version = "0.5", default-features = false }
|
|
```
|
|
|
|
Example
|
|
-------
|
|
|
|
## Image generation
|
|
|
|
```rust
|
|
extern crate qrcode;
|
|
extern crate image;
|
|
|
|
use qrcode::QrCode;
|
|
use image::Luma;
|
|
|
|
fn main() {
|
|
// Encode some data into bits.
|
|
let code = QrCode::new(b"01234567").unwrap();
|
|
|
|
// Render the bits into an image.
|
|
let image = code.render::<Luma<u8>>().build();
|
|
|
|
// Save the image.
|
|
image.save("/tmp/qrcode.png").unwrap();
|
|
}
|
|
```
|
|
|
|
Generates this image:
|
|
|
|
|
|
|
|
## String generation
|
|
|
|
```rust
|
|
extern crate qrcode;
|
|
use qrcode::QrCode;
|
|
|
|
fn main() {
|
|
let code = QrCode::new(b"Hello").unwrap();
|
|
let string = code.render::<char>()
|
|
.quiet_zone(false)
|
|
.module_dimensions(2, 1)
|
|
.build();
|
|
println!("{}", string);
|
|
}
|
|
```
|
|
|
|
Generates this output:
|
|
|
|
```none
|
|
############## ######## ##############
|
|
## ## ## ## ##
|
|
## ###### ## ## ## ## ## ###### ##
|
|
## ###### ## ## ## ## ###### ##
|
|
## ###### ## #### ## ## ###### ##
|
|
## ## #### ## ## ##
|
|
############## ## ## ## ##############
|
|
## ##
|
|
## ########## ## ## ##########
|
|
## ## ######## #### ##
|
|
########## #### ## #### ######
|
|
## ## #### ########## ####
|
|
###### ########## ## ## ##
|
|
## ## ## ##
|
|
############## ## ## ## ## ####
|
|
## ## ## ## ##########
|
|
## ###### ## ## ## ## ## ##
|
|
## ###### ## #### ########## ##
|
|
## ###### ## #### ## #### ##
|
|
## ## ## ######## ######
|
|
############## #### ## ## ##
|
|
```
|
|
|
|
## SVG generation
|
|
|
|
```rust
|
|
extern crate qrcode;
|
|
|
|
use qrcode::{QrCode, Version, EcLevel};
|
|
use qrcode::render::svg;
|
|
|
|
fn main() {
|
|
let code = QrCode::with_version(b"01234567", Version::Micro(2), EcLevel::L).unwrap();
|
|
let image = code.render()
|
|
.min_dimensions(200, 200)
|
|
.dark_color(svg::Color("#800000"))
|
|
.light_color(svg::Color("#ffff80"))
|
|
.build();
|
|
println!("{}", string);
|
|
}
|
|
```
|
|
|
|
Generates this SVG:
|
|
|
|
[](src/test_annex_i_micro_qr_as_svg.svg) |