fabienbellanger/escpos-rs

ESC/POS implementation in Rust

escpos-rs's Issues

How to print characters with umlaut or accents?

Thank you for this wonderful crate. There is one thing that I don't understand. How can the Encoding be set to a specific page code of the printer? As I see that French is supported, I suppose that there is a way to do it, but I was able to do that in crates that used the original Encoding crate, I cannot finf a way to customize the used Encoding.

about usb

@fabienbellanger Hello, thank you for opening up such an excellent project. I am a Rust beginner and I do not understand the underlying communication principles. I want to call the Rust program to implement cross platform USB ticket printing in an Electron based project, but 'escpos-rs' depends on' libusb'. I don't know how to package 'libusb ' into the project to reduce the process of users installing 'libusb'. I have found that nusb is a pure Rust library. Can escpos-rs rely on nusb connecting to USB printer devices

Support for printer status

Are there any plans on supporting printer status? Currently, even when the print is not successful we do not get any feedback (e.g., when the printer is connected but there is no paper). For my use case, I need to know whether the print was successful or not. I started looking into the DLE EOT n command (https://download4.epson.biz/sec_pubs/pos/reference_en/escpos/dle_eot.html) and could get the status for my printer but it looks like I am always getting the status from the previous request (when I have time I will do some more tests). But I was wondering, since you already implemented the custom command, I could probably get away with it, but I would need a way to listen back from the printer, do you have any plans on it?

How to print via USB?

I could not find any example of how to print using USB, could you provide an example (preferably on Windows)?
Thank you for your work on this crate.

How to print receipt orders with table

Thank you for the code!

This project is great, can it support print order receipt with table, similar to the following example:
https://github.com/jamhall/recibo/blob/main/examples/receipt.rs

Implementing Copy and Clone for the JustifyMode enum

First off, I would like to thank you for putting this library together. I found it much better than the other options.

Now I'm no Rust expert but I was working on a simple GUI app that utilizes this crate. In doing so I ran into an issue where I needed JustifyMode to implement the Copy and Clone traits.

The code in question is in types.rs

Here is a simple example that causes the issue:

use escpos::utils:*;

struct Demo {
    j: JustifyMode,
}

impl Demo {
    fn temp(&self) {
        self.j;
    }
}

fn main() {
    // code omitted here for simplicity
}

The error it produces is:

cannot move out of `self.j` which is behind a shared reference
move occurs because `self.j` has type `escpos::utils::JustifyMode`, which does not implement the `Copy` trait

Current code

/// Justify mode
#[derive(Debug)]
pub enum JustifyMode {
    LEFT,
    CENTER,
    RIGHT,
}

Proposed change

/// Justify mode
#[derive(Debug, Clone, Copy)]
pub enum JustifyMode {
    LEFT,
    CENTER,
    RIGHT,
}

I have a fork where I have made these changes. Let me know and I can make a Pull Request.

If this is not needed because there is a better way to do it, please let me know.

Thanks again for your work here!

Is there a plan to TSC label printer support

Is there a plan to TSC label printer support？