49 lines
1.2 KiB
Markdown
49 lines
1.2 KiB
Markdown
**matrix-qrcode** is a crate to easily generate and parse QR codes for
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interactive verification using [QR codes] in Matrix.
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## Usage
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This is probably not the crate you are looking for, it's used internally in the
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[matrix-sdk].
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If you still want to play with QR codes, here are a couple of helpful examples.
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### Decode an image
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```rust,no_run
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use image;
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use matrix_qrcode::{QrVerificationData, DecodingError};
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fn main() -> Result<(), DecodingError> {
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let image = image::open("/path/to/my/image.png").unwrap();
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let result = QrVerificationData::from_image(image)?;
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Ok(())
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}
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```
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### Encode into a QR code
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```rust,no_run
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use matrix_qrcode::{QrVerificationData, DecodingError};
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use image::Luma;
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fn main() -> Result<(), DecodingError> {
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let data = b"MATRIX\
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\x02\x02\x00\x07\
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FLOW_ID\
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AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\
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BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB\
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SHARED_SECRET";
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let data = QrVerificationData::from_bytes(data)?;
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let encoded = data.to_qr_code().unwrap();
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let image = encoded.render::<Luma<u8>>().build();
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Ok(())
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}
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```
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[matrix-sdk]: https://github.com/matrix-org/matrix-rust-sdk/
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[QR codes]: https://spec.matrix.org/unstable/client-server-api/#qr-codes
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