QMetaObject crate for Rust
cxx-qt
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QMetaObject crate for Rust | cxx-qt | |
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20 | 28 | |
599 | 901 | |
2.3% | 6.0% | |
6.5 | 9.6 | |
about 2 months ago | 6 days ago | |
Rust | Rust | |
MIT License | - |
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QMetaObject crate for Rust
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9 years of Apple text editor solo dev
You can use Rust with QML[1].
QML is actually pretty amazing. I've been building my block editor[2] view entirely in QML while the model is in C++. This separation of logic and presentation works great. And yes, there are some crashes sometimes (that I find quite easy to debug thanks to the built-in debugger), but take for example a similar app that's built with Rust and Dart[3], in my testing there were still memory leaks that caused my computer to hang. It's better to know you have a bug than for it to be hidden from you.
I agree with parent commenter, saying these cross-platform frameworks will end up supporting the least common denominator set of features. But I found with external open source libraries, the community is catching up very fast. For example, you want the awesome translucency macOS apps have for your Qt app? Here you go[4]. Many such cases. It's also pretty straightforward to add your own custom OS-dependent code, especially so, if someone already open sourced his approach. I recently wanted to move the traffic light buttons on macOS for my app, but couldn't figure the Objective-C code for that. I ended up looking at either Tauri or Electron source code and found my answer.
[1] https://github.com/woboq/qmetaobject-rs
[2] https://www.get-plume.com/
[3] https://www.appflowy.io/
[4] https://github.com/stdware/qwindowkit
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I like rust but want to use Qt.
I just used qmetaobject-rs and my experience with Qt/QML. There's the QML book from Qt if you're just starting, which is pretty nice https://www.qt.io/product/qt6/qml-book
- GUI development with Rust and GTK 4
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Made my first app in Rust! A notification daemon for Linux :)
qmetaobject is probably the most mature Qt Rust binding at the moment. It uses the cpp crate to embed C++ inline in Rust to create its bindings. There are some people using it and it does get some maintenance, but it's not under active development since the original author is now working on Slint.
- QT for Rust?
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Using KConfig with Rust
The bindings currently use the git version of qttypes since I had to merge some upstream changes that are needed for these bindings. So they are not ready for prime time just yet.
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CXX-Qt: safe Rust bindings for Qt
There are a bunch of bindings with different language, but even the ones that are officially supported like PySide will still be second class citizen and awkward to use.
Automated binding generation will never give you idiomatic API in whatever language. And if you want an idiomatic library that wraps Qt, it's going to take a huge amount of work.
Which is why I think restricting to QML makes sense because that's a much smaller API surface. That was the ambition behind my previous crate that exposes QML to rust: https://github.com/woboq/qmetaobject-rs/
But now I've moved on to another GUI project: Slint https://github.com/slint-ui/slint
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Why does Rust code compile into a single executable binary?
Whisperfish does this with Qt: https://github.com/woboq/qmetaobject-rs/issues/102
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Announcing Gyroflow - an advanced video stabilization tool written in Rust with GPU acceleration and cross-platform UI
What do you want to know? It's pretty easy thanks to the amazing work of guys behind qmetaobject-rs.
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Using KI18n with Rust and Qml
This is probably the portion that I found the most difficult. The README of qmetaobject-rs gives us a basic idea of the build script, so I started with that. Here is my starting script
cxx-qt
- Cxx-Qt: Use Qt from Rust
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Qt 6.6 and 6.7 Make QML Faster Than Ever: A New Benchmark and Analysis
My employer, KDAB, is building an excellent Rust binding for Qt: https://github.com/KDAB/cxx-qt
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I like rust but want to use Qt.
You can use cxx-qt or qmetaobject-rs. Or use Slint
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Build a desktop app with Qt and Rust
Rust has several Qt bindings. The most popular are Ritual, CXX-Qt, and qmetaobject. Ritual is not maintained anymore, and qmetaobject doesn't support QWidgets. So CXX-Qt is our best bet for now.
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DAW Frontend Development Struggles
Qt bindings for Rust also exist, although I'm not sure how mature they are: https://github.com/KDAB/cxx-qt/
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Build a desktop app with Qt and Rust - LogRocket Blog
We're getting closer, but you're still likely to run into missing features in CXX-Qt at this point. If you do, please report it on GitHub!
- GUI development with Rust and GTK 4
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Who "owns" Rust ?
This is no longer required in CXX-Qt as of this week (https://github.com/KDAB/cxx-qt/pull/428). Next release coming soon.
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The first issue of Rust Magazine has been published 🎉🎉
From my understanding KDAB isn't trying to "replace" Qt. They're working on cxx-qt to make using Qt and Rust together much easier.
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Rust: State of GUI, December 2022 – KAS blog
I second this. I wrote an internal Qt/QML app that ran on Windows, Linux, Android, and Raspberry Pis. We had ~20 Raspberry Pi's running this app in kiosk mode. If only KDAB/cxx-qt[1] were ready there, I would have done as much as possible in rust .
- [1] https://github.com/KDAB/cxx-qt/
What are some alternatives?
Slint - Slint is a toolkit to efficiently develop fluid graphical user interfaces for any display: embedded devices and desktop applications. We support multiple programming languages, such as Rust, C++ or JavaScript. [Moved to: https://github.com/slint-ui/slint]
slint - Slint is a declarative GUI toolkit to build native user interfaces for Rust, C++, or JavaScript apps.
qt6ct - Qt6 Configuration Tool
wxRust - A Rust binding of the wxWidgets cross platform toolkit.
crates.io - The Rust package registry
Rust Qt Binding Generator git - Generate bindings to use Rust code in Qt and QML
miniserve - 🌟 For when you really just want to serve some files over HTTP right now!
ritual - Use C++ libraries from Rust
gyroflow - Video stabilization using gyroscope data
Azul - Desktop GUI Framework
bonsai - A library for building dynamic webapps, using Js_of_ocaml