## 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.)
* Revert "fix all clippy lints and remove them from allow list in cranky (#2419)"
This reverts commit 930ef2db38.
* Explain the cranky lints better
* Add Color32::gamma_multiply
* Remove unused pub use
* Remove non-existing crate category
* Improve color test with more lines
* Improve the look of thin lines, making them look weaker
Before they looked were too strong for the thickness.
* Use asserts for shader compilations
* Update changelogs
* split out ecolor crate
* split up ecolor crate in lots of modules
* add changelog notes
* add readme to ecolor
* put clippy::manual_range_contains on cranky allow list
* fix hex color issues
* doc fixes
* more hex_color fixes
* Document features
* Rename hex_color module to avoid warning
* Sort the feature names
* fix link in CHANGELOG.md
* better wording
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* eframe web: Add WebInfo::user_agent
* Deprecate `Modifier::ALT_SHIFT`
* Add code for formatting Modifiers and Key
* Add type KeyboardShortcut
* Code cleanup
* Add Context::os/set_os to query/set what OS egui believes it is on
* Add Fonts::has_glyph(s)
* Add helper function for formatting keyboard shortcuts
* Faster code
* Add way to set a shortcut text on menu buttons
* Cleanup
* format_keyboard_shortcut -> format_shortcut
* Add TODO about supporting more keyboard sumbols
* Modifiers::plus
* Use the new keyboard shortcuts in emark editor demo
* Explain why ALT+SHIFT is a bad modifier combo
* Fix doctest
Closes https://github.com/emilk/egui/issues/2068
Before this PR, the default font, Ubuntu-Light, was ~11% smaller
than it should have been, and the default monospace font, Hack,
was ~14% smaller. This means that setting the font size `12` in egui
would yield smaller text than using that font size in any other app.
Ooops!
The change is that this PR now takes into account the ttf properties
`units_per_em` and `height_unscaled`.
If your egui application has specified you own font sizes or text styles
you will see the text in your application grow
larger, unless you go in and compensate by dividing all font sizes by
~1.21 for Ubuntu-Light/Proportional and ~1.16 for Hack/Monospace,
and with something else if you are using a custom font!
This effects any use of `FontId`, `RichText::size`, etc.
This PR changes the default `Style::text_styles` to compensate,
so the default egui style should look the same before and after this PR.
