The name egui_system_fonts is already taken on crates.io. The new name
matches the crate's `SystemFontProvider` type.
Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Disclosure - AI written PR with GPT 6
I was unable to compile for wasm on my project because I use egui-winnit
instead of eframe
See AI explanation below:
## Summary
* Fixes#8436
`egui-winit` unconditionally compiled `NativeFile`, which implements
`DroppedFile::bytes()`. On wasm32, the trait requires `bytes_async()`
instead, causing compilation to fail.
This change gates the native file implementation and its usage to native
targets. An explicit wasm fallback ignores dropped-file events, which
winit’s web backend does not emit.
Adds a direct wasm compilation check to CI and the local check script,
since eframe’s wasm builds do not compile egui-winit.
## Validation
- wasm32 compilation with default features disabled passes.
- Native Linux/X11 compilation passes.
- Formatting and shell syntax checks pass.
- Strict wasm Clippy encounters six existing, unrelated warnings in
clipboard.rs.
Run the tests with `--no-fail-fast`, in CI and in `scripts/check.sh`.
`cargo test` stops after the first failing test target, so one failing
snapshot test in `egui_demo_app` hid the failing snapshots of every
later crate, and it took several CI rounds to collect all the new
snapshots. Now one run reports them all and uploads all `.new.png`
files, so one kitdiff pass is enough.
`egui_kittest` already collects all snapshot errors of a test in one
`SnapshotResults` and only panics when it is dropped, so no change is
needed there.
* [x] I have followed the instructions in the PR template
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
* Closes https://github.com/emilk/egui/issues/5889
See the above issue for motivation.
To use glow instead, disable the default features of `eframe` and opt-in
to `glow`.
This also changes egui.rs to use wgpu, which means WebGPU when
available, and WebGL otherwise
## Short bluesky announcement:
We just released egui 0.33.0!
Highlights:
- `egui::Plugin` a improved way to create and access egui plugins
- [kitdiff](https://github.com/rerun-io/kitdiff), a viewer for
egui_kittest image snapshots (and a general image diff tool)
- better kerning (check the diff on
[kitdiff](https://rerun-io.github.io/kitdiff/?url=https://github.com/emilk/egui/pull/7431))
https://github.com/user-attachments/assets/971f0493-6dae-42e5-8019-58b74cf5d203
## Relaese Changelog:
egui is an easy-to-use immediate mode GUI for Rust that runs on both web
and native.
Try it now: <https://www.egui.rs/>
egui development is sponsored by [Rerun](https://www.rerun.io/), a
startup building an SDK for visualizing streams of multimodal data.
# egui 0.33.0 changelog
Highlights from this release:
- `egui::Plugin` a improved way to create and access egui plugins
- [kitdiff](https://github.com/rerun-io/kitdiff), a viewer for
egui_kittest image snapshots (and a general image diff tool)
- better kerning
### Improved kerning
As a step towards using [parley](https://github.com/linebender/parley)
for font rendering, @valadaptive has refactored the font loading and
rendering code. A result of this (next to the font rendering code being
much nicer now) is improved kerning.
Notice how the c moved away from the k:
### `egui::Plugin` trait
We've added a new trait-based plugin api, meant to replace
`Context::on_begin_pass` and `Context::on_end_pass`.
This makes it a lot easier to handle state in your plugins. Instead of
having to write to egui memory it can live right on your plugin struct.
The trait based api also makes easier to add new hooks that plugins can
use. In addition to `on_begin_pass` and `on_end_pass`, the `Plugin`
trait now has a `input_hook` and `output_hook` which you can use to
inspect / modify the `RawInput` / `FullOutput`.
### kitdiff, a image diff viewer
At rerun we have a ton of snapshots. Some PRs will change most of them
(e.g. [the](https://github.com/rerun-io/rerun/pull/11253/files)
[one](https://rerun-io.github.io/kitdiff/?url=https://github.com/rerun-io/rerun/pull/11253/files)
that updated egui and introduced the kerning improvements, ~500
snapshots changed!).
If you really want to look at every changed snapshot it better be as
efficient as possible, and the experience on github, fiddeling with the
sliders, is kind of frustrating.
In order to fix this, we've made
[kitdiff](https://rerun-io.github.io/kitdiff/).
You can use it locally via
- `kitdiff files .` will search for .new.png and .diff.png files
- `kitdiff git` will compare the current files to the default branch
(main/master)
Or in the browser via
- going to https://rerun-io.github.io/kitdiff/ and pasting a PR or
github artifact url
- linking to kitdiff via e.g. a github workflow
`https://rerun-io.github.io/kitdiff/?url=<link_to_pr_or_artefact>`
To install kitdiff run `cargo install --git
https://github.com/rerun-io/kitdiff`
Here is a video showing the kerning changes in kitdiff ([try it
yourself](https://rerun-io.github.io/kitdiff/?url=https://github.com/rerun-io/rerun/pull/11253/files)):
https://github.com/user-attachments/assets/74640af1-09ba-435a-9d0c-2cbeee140c8f
### Migration guide
- `egui::Mutex` now has a timeout as a simple deadlock detection
- If you use a `egui::Mutex` in some place where it's held for longer
than a single frame, you should switch to the std mutex or parking_lot
instead (egui mutexes are wrappers around parking lot)
- `screen_rect` is deprecated
- In order to support safe areas, egui now has `viewport_rect` and
`content_rect`.
- Update all usages of `screen_rect` to `content_rect`, unless you are
sure that you want to draw outside the `safe area` (which would mean
your Ui may be covered by notches, system ui, etc.)
This adds a new workflow `update_kittest_snapshots.yml` that can be
triggered through the [kitdiff](https://github.com/rerun-io/kitdiff) ui
when viewing a ci artefact.
Also adds a link to kitdiff to view the pr changes to each commit (via
the preview build comment)
---------
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Enabled the `missing_assert_message` lint
* [x] I have followed the instructions in the PR template
---------
Co-authored-by: Lucas Meurer <lucasmeurer96@gmail.com>
It seems like the thresholds are too low for all tests to pass when
snapshots are generated from windows / linux. We need a better solution
to this problem, but in the meantime this script should allow
contributors to update their snapshots by downloading them from the last
CI run.
<!--
Please read the "Making a PR" section of
[`CONTRIBUTING.md`](https://github.com/emilk/egui/blob/master/CONTRIBUTING.md)
before opening a Pull Request!
* Keep your PR:s small and focused.
* The PR title is what ends up in the changelog, so make it descriptive!
* If applicable, add a screenshot or gif.
* If it is a non-trivial addition, consider adding a demo for it to
`egui_demo_lib`, or a new example.
* Do NOT open PR:s from your `master` branch, as that makes it hard for
maintainers to test and add commits to your PR.
* Remember to run `cargo fmt` and `cargo clippy`.
* Open the PR as a draft until you have self-reviewed it and run
`./scripts/check.sh`.
* When you have addressed a PR comment, mark it as resolved.
Please be patient! I will review your PR, but my time is limited!
-->
* [x] I have followed the instructions in the PR template
## Changes
- Use Python 3 in `scripts/lint.py`.
## Why
Some modern OS and distributions do not provide Python 2 by default.
This includes recent macOS versions.
I see that `scripts/generate_changelog.py` already uses Python 3, so I
don't think this change should be controversial.
Without this change, I am unable to run `./scripts/check.sh` on macOS
15.2 without installing Python 2 or adding alias for `python`
executable.
Lucas Meurer