Provide ability to use GIT egui

[justacec]

I have a situation where I would like to use a Table widget. This is not built into the released version of egui right now, but seems as though a recent merge to master has provided some basic functionality. Is there a way (without forking bevy_egui) that I can get bevy_egui to use the GIT version of egui? Right now it seems as though it is hard coded.

See discussion at emilk/egui#296 and emilk/egui#963 for more details.

Possibly adding a feature flag for a specific git branch of egui would be nice.

[vladbat00]

Hi @justacec! I haven't looked into the most recent Egui changes in git yet, but there's a chance that the current version of bevy_egui is compatible with it. To make your project use the git version, you can put the following into your Cargo.toml:

[patch.crates-io]
egui = { git = "https://github.com/emilk/egui.git" }

Let me know if that works!

[justacec]

Humm. Looks like it did not work:

bash-3.2$ cargo build
    Updating git repository `https://github.com/emilk/egui.git`
error: failed to select a version for `egui`.
    ... required by package `bevy_egui v0.13.0`
    ... which satisfies dependency `bevy_egui = "^0.13"` (locked to 0.13.0) of package `FirmwareClient v0.1.0 (/Users/justaceclutter/Desktop/Topics/RocketTracker/FirmwareClient)`
versions that meet the requirements `^0.17` (locked to 0.17.0) are: 0.17.0

the package `bevy_egui` depends on `egui`, with features: `convert_bytemuck` but `egui` does not have these features.

Seems that the egui author refactored the crates features and changed convert_bytemuck to just bytemuck. The commit is at emilk/egui@cf0338d.

[vladbat00]

I tried to make a quick upgrade to the git version but stumbled upon some other breaking changes and new features that aren't quite trivial to implement. Unfortunately, I don't have enough time to work on that at the moment. But I'll try my best to release a new version of bevy_egui as soon as the new version of Egui lands on crates.io.

[justacec]

:). Thanks for looking into it. It's ok. I have things working as of now. But not with GIT bevy.

I went ahead and made a mock table with Grid and will switch it ip as soon as there is a release.

No need to change up your flow for me. :)

[vladbat00]

Ok, I figured I won't include PaintCallback (that untrivial thing I mentioned) support in the release, as I have no idea how to make it work with Bevy. Here's the branch supporting the new version: #99

[justacec]

Just got done making the adjustments in my Cargo.toml file:

bevy_egui = { git = "https://github.com/mvlabat/bevy_egui.git", branch = "egui-0.18"}

[patch.crates-io]
egui = { git = "https://github.com/emilk/egui.git" }

Worked like a charm. Now to go play with the newer table stuff in egui.

Closing this issue. Thanks again!