* [x] I have followed the instructions in the PR template
Currently eframe [calls
`prevent_default()`](962c7c7516/crates/eframe/src/web/events.rs (L307-L369))
for all copy / paste events on the
[*document*](962c7c7516/crates/eframe/src/web/events.rs (L88)),
making embedding an egui application in a page (e.g. an react
application) hard (as all copy & paste functionality for other elements
on the page is broken by this).
I'm not sure what the motivation for this is, if any.
This commit / PR adds a callback (`should_prevent_default`), similar to
`should_propgate_event`, that an egui application can use to overwrite
this behavior. It defaults to returning `true` for all events, to keep
the existing behavior.
I call `should_prevent_default` in every place that
`should_propagate_event` is called (which is not all places that
`prevent_default` is called!). I'm not sure for the motivation of not
calling `should_propagate_event` everywhere that `stop_propagation` is
called, but I kept that behavior for the `should_prevent_default`
callback too.
Please let me know if I'm missing some existing functionality that would
allow me to do this, or if there's a reason that we don't want
applications to be able to customize this (i.e. if there's a reason to
always `prevent_default` for all copy / paste events on the whole
document)
Hey! I am not sure if this is something that's been considered before
and decided against (I couldn't find any PR's or issues).
This change removes the internal profiling macros in library crates and
the `puffin` feature and replaces it with similar functions in the
[profiling](https://github.com/aclysma/profiling) crate. This crate
provides a layer of abstraction over various profiler instrumentation
crates and allows library users to pick their favorite (supported)
profiler.
An additional benefit for puffin users is that dependencies of egui are
included in the instrumentation output too (mainly wgpu which uses the
profiling crate), so more details might be available when profiling.
A breaking change is that instead of using the `puffin` feature on egui,
users that want to profile the crate with puffin instead have to enable
the `profile-with-puffin` feature on the profiling crate. Similarly they
could instead choose to use `profile-with-tracy` etc.
I tried to add a 'tracy' feature to egui_demo_app in order to showcase ,
however the /scripts/check.sh currently breaks on mutually exclusive
features (which this introduces), so I decided against including it for
the initial PR. I'm happy to iterate more on this if there is interest
in taking this PR though.
Screenshot showing the additional info for wgpu now available when using
puffin
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Android support is "almost there". This PR pushes it just a bit further
by allowing `eframe` to be used on Android. It works by smuggling the
`AndroidApp` required by `winit` through `NativeOptions`.
The example isn't great because it doesn't leave space on the display
for Android's top status bar or the lower navigation bar. I don't know
what to do about that, yet. This is as far as I've managed to get it
working.
Another problem is that the development environment setup is completely
awful for Android unless you happen to already be a full-time Android
developer with everything configured on your build host. As a Rustacean,
this makes me very sad.
I've had some luck moving all of that mess to a container, adapted from
https://github.com/SergioRibera/docker-rust-android. It takes care of
all of the build dependencies, Android SDK, and the `cargo-apk` patches
for bugs that I hit while getting the example to work on my device. (I
also had to install an adb driver on my host and downloaded the Android
platform-tools to get access to `adb`. An alternative is exposing the
USB device to Docker. On Windows hosts, that means [installing
`usbipd`](https://learn.microsoft.com/en-us/windows/wsl/connect-usb). A
second alternative is using an `mtp` client to upload the APK as a file
with USB file transfer enabled, then manually install it through the
device's file manager.)
I'm not including the docker stuff in this PR, but here are the files
and instructions for future reference (and it will probably simplify
manual testing and CI, FWIW!)
<details><summary><code>Dockerfile</code></summary>
```dockerfile
FROM rust:1.76.0-slim
# Variable arguments
ARG JAVA_VERSION=17
ARG NDK_VERSION=25.1.8937393
ARG BUILDTOOLS_VERSION=30.0.0
ARG PLATFORM_VERSION=android-30
ARG CLITOOLS_VERSION=8512546_latest
# Install Android requirements
RUN apt-get update -yqq && \
apt-get install -y --no-install-recommends \
libcurl4-openssl-dev libssl-dev pkg-config build-essential git python3 wget zip unzip openjdk-${JAVA_VERSION}-jdk && \
apt-get clean && \
rm -rf /var/lib/apt/lists/*
# Install android targets
RUN rustup target add armv7-linux-androideabi aarch64-linux-android
# Install cargo-apk
RUN git clone -b fix/bin-targets-workspace-members https://github.com/parasyte/cargo-apk.git /tmp/cargo-apk && \
cargo install --path /tmp/cargo-apk/cargo-apk
# Generate Environment Variables
ENV JAVA_VERSION=${JAVA_VERSION}
ENV ANDROID_HOME=/opt/Android
ENV NDK_HOME=/opt/Android/ndk/${NDK_VERSION}
ENV ANDROID_NDK_ROOT=${NDK_HOME}
ENV PATH=$PATH:${ANDROID_HOME}:${ANDROID_NDK_ROOT}:${ANDROID_HOME}/build-tools/${BUILDTOOLS_VERSION}:${ANDROID_HOME}/cmdline-tools/bin
# Install command line tools
RUN mkdir -p ${ANDROID_HOME}/cmdline-tools && \
wget -qc "https://dl.google.com/android/repository/commandlinetools-linux-${CLITOOLS_VERSION}.zip" -P /tmp && \
unzip -d ${ANDROID_HOME} /tmp/commandlinetools-linux-${CLITOOLS_VERSION}.zip && \
rm -fr /tmp/commandlinetools-linux-${CLITOOLS_VERSION}.zip
# Install sdk requirements
RUN echo y | sdkmanager --sdk_root=${ANDROID_HOME} --install \
"build-tools;${BUILDTOOLS_VERSION}" "ndk;${NDK_VERSION}" "platforms;${PLATFORM_VERSION}"
# Create APK keystore for debug profile
# Adapted from caa806283d/ndk-build/src/ndk.rs (L393-L423)
RUN keytool -genkey -v -keystore ${HOME}/.android/debug.keystore -storepass android -alias androiddebugkey \
-keypass android -dname 'CN=Android Debug,O=Android,C=US' -keyalg RSA -keysize 2048 -validity 10000
# Cleanup
RUN rm -rf /tmp/*
WORKDIR /src
ENTRYPOINT [ "cargo", "apk", "build" ]
```
</details>
<details><summary><code>.dockerignore</code></summary>
```ignore
# Ignore everything, only the Dockerfile is needed to build the container
*
```
</details>
```sh
docker build -t rust-android:latest .
docker run --rm -it -v "$PWD:/src" rust-android:latest -p hello_android
adb install target/debug/apk/hello_android.apk
```
* Part of #2066
* [x] I have followed the instructions in the PR template
* Closes <https://github.com/emilk/egui/issues/4490>
* [x] I have followed the instructions in the PR template
---
Unfortunately, this PR contains a bunch of breaking changes because
`Context` no longer has one style, but two. I could try to add some of
the methods back if that's desired.
The most subtle change is probably that `style_mut` mutates both the
dark and the light style (which from the usage in egui itself felt like
the right choice but might be surprising to users).
I decided to deviate a bit from the data structure suggested in the
linked issue.
Instead of this:
```rust
pub theme: Theme, // Dark or Light
pub follow_system_theme: bool, // Change [`Self::theme`] based on `RawInput::system_theme`?
```
I decided to add a `ThemePreference` enum and track the current system
theme separately.
This has a couple of benefits:
* The user's theme choice is not magically overwritten on the next
frame.
* A widget for changing the theme preference only needs to know the
`ThemePreference` and not two values.
* Persisting the `theme_preference` is fine (as opposed to persisting
the `theme` field which may actually be the system theme).
The `small_toggle_button` currently only toggles between dark and light
(so you can never get back to following the system). I think it's easy
to improve on this in a follow-up PR :)
I made the function `pub(crate)` for now because it should eventually be
a method on `ThemePreference`, not `Theme`.
To showcase the new capabilities I added a new example that uses
different "accent" colors in dark and light mode:
<img
src="https://github.com/user-attachments/assets/0bf728c6-2720-47b0-a908-18bd250d15a6"
width="250" alt="A screenshot of egui's widget gallery demo in dark mode
using a purple accent color instead of the default blue accent">
<img
src="https://github.com/user-attachments/assets/e816b380-3e59-4f11-b841-8c20285988d6"
width="250" alt="A screenshot of egui's widget gallery demo in light
mode using a green accent color instead of the default blue accent">
---------
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
Currently egui will prevent all web events from propagating. This causes
issues in contexts where you are using egui in a larger web context that
wants to receive events that egui does not directly respond to. For
example, currently using egui in a VSCode extension will block all app
hotkeys, such as saving and opening the panel.
This adds a closure to `WebOptions` that takes in a reference to the
egui event that is generated from a web event and returns if the
corresponding web event should be propagated or not. The default for it
is to always return false.
Alternatives I considered were:
1. Having the propagation filter be a property of the focus in memory.
That way it could be configured by the view currently selected. I opted
away from that because I wanted to avoid lowering eframe implementation
specific stuff into egui.
2. Having events contain a `web_propagate` flag that could be set when
handling them. However, that would not be compatible with the current
system of egui events being handled outside of the web event handler.
I just recently started using egui so I am not sure how idiomatic my
approach here is. I would be happy to switch this over to a different
architecture if there are suggestions.
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I love egui! Thank you Emil <3
This request specifically enables an `eframe::App` which stores a
lifetime.
In general, I believe this is necessary because `eframe::App` currently
does not seem to provide a good place to allocate and then borrow from
long-lived data between `update()` calls. To attempt to borrow such
long-lived data from a field of the `App` itself would be to create a
self-referential struct. A hacky alternative is to allocate long-lived
data with `Box::leak`, but that's a code smell and would cause problems
if a program ever creates multiple Apps.
As a more specific motivating example, I am developing with the
[inkwell](https://github.com/TheDan64/inkwell/) crate which requires
creating a `inkwell::context::Context` instance which is then borrowed
from by a bazillion things with a dedicated `'ctx` lifetime. I need such
a `inkwell::context::Context` for the duration of my `eframe::App` but I
can't store it as a field of the app. The most natural solution to me is
to simply to lift the inkwell context outside of the App and borrow from
it, but that currently fails because the AppCreator implicitly has a
`'static` lifetime requirement due to the use of `dyn` trait objects.
Here is a simpler, self-contained motivating example adapted from the
current [hello world example](https://docs.rs/eframe/latest/eframe/):
```rust
use eframe::egui;
struct LongLivedThing {
message: String,
}
fn main() {
let long_lived_thing = LongLivedThing {
message: "Hello World!".to_string(),
};
let native_options = eframe::NativeOptions::default();
eframe::run_native(
"My egui App",
native_options,
Box::new(|cc| Ok(Box::new(MyEguiApp::new(cc, &long_lived_thing)))),
// ^^^^^^^^^^^^^^^^^
// BORROWING from long_lived_thing in App
);
}
struct MyEguiApp<'a> {
long_lived_thing: &'a LongLivedThing,
}
impl<'a> MyEguiApp<'a> {
fn new(cc: &eframe::CreationContext<'_>, long_lived_thing: &'a LongLivedThing) -> Self {
// Customize egui here with cc.egui_ctx.set_fonts and cc.egui_ctx.set_visuals.
// Restore app state using cc.storage (requires the "persistence" feature).
// Use the cc.gl (a glow::Context) to create graphics shaders and buffers that you can use
// for e.g. egui::PaintCallback.
MyEguiApp { long_lived_thing }
}
}
impl<'a> eframe::App for MyEguiApp<'a> {
fn update(&mut self, ctx: &egui::Context, frame: &mut eframe::Frame) {
egui::CentralPanel::default().show(ctx, |ui| {
ui.heading(&self.long_lived_thing.message);
});
}
}
```
This currently fails to compile with:
```plaintext
error[E0597]: `long_lived_thing` does not live long enough
--> src/main.rs:16:55
|
16 | Box::new(|cc| Ok(Box::new(MyEguiApp::new(cc, &long_lived_thing)))),
| ----------------------------------------------^^^^^^^^^^^^^^^^----
| | | |
| | | borrowed value does not live long enough
| | value captured here
| cast requires that `long_lived_thing` is borrowed for `'static`
17 | );
18 | }
| - `long_lived_thing` dropped here while still borrowed
|
= note: due to object lifetime defaults, `Box<dyn for<'a, 'b> FnOnce(&'a CreationContext<'b>) -> Result<Box<dyn App>, Box<dyn std::error::Error + Send + Sync>>>` actually means `Box<(dyn for<'a, 'b> FnOnce(&'a CreationContext<'b>) -> Result<Box<dyn App>, Box<dyn std::error::Error + Send + Sync>> + 'static)>`
```
With the added lifetimes in this request, I'm able to compile and run
this as expected on Ubuntu + Wayland. I see the CI has been emailing me
about some build failures and I'll do what I can to address those.
Currently running the check.sh script as well.
This is intended to resolve https://github.com/emilk/egui/issues/2152
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* Closes https://github.com/emilk/egui/issues/2152
* [x] I have followed the instructions in the PR template
eframe now has its own logic to find the storage_dir to persist the app
when the persistence feature is enabled, instead of using the
directories crate. The directory should be the same as before (verified
with a unit test).
* Closes <https://github.com/emilk/egui/issues/4884>
* [x] I have followed the instructions in the PR template
* Some initial progress towards #4490
This PR just moves `Theme` and the "follow system theme" settings to
egui and adds `RawInput.system_theme`.
A follow-up PR can then introduce the two separate `dark_mode_style` and
`light_mode_style` fields on `Options`.
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* [x] I have followed the instructions in the PR template
### Breaking changes
The options `follow_system_theme` and `default_theme` has been moved
from `eframe` into `egui::Options`, settable with `ctx.options_mut`
---------
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* Closes https://github.com/emilk/egui/issues/1918
* Closes https://github.com/emilk/egui/issues/4437
* Closes https://github.com/emilk/egui/issues/4709
* [x] I have followed the instructions in the PR template
Hiya,
I need new winit for a specific fix for a android_native_actvity. There
are already two PRs, but both don't seem to have a lot of movement, or
are entirely complete:
https://github.com/emilk/egui/pull/4466
Seems to have gone stale & is missing some bits.
https://github.com/emilk/egui/pull/4702
Also seems stale (if less so), and is missing a refactor to
run_on_demand. I also *think* the accesskit integration has a mistake
and can't be enabled. I've marked them as a co-author on this as I
started from this branch. (I think! Haven't done that on git before...).
Sorry for the wall of text but just dumping some details / thoughts
here:
- There's an issue with creating child windows in winit 0.30.1 and up on
macOS. The multiple_viewports, "create immediate viewport" example
crashes on anything later 0.30.1, with a stack overflow in unsafe code.
I've create [a winit
issue](https://github.com/rust-windowing/winit/issues/3800), it *might*
already be fixed in 0.31.0 but I can't test as 0.31 will likely require
another refactoring. For now I have just pinned things to 0.30.0 exatly.
- Winit has deprecated run_on_demand, instead requiring the
ApplicationHandler interface. In 0.31.0 run_on_demand is removed. I've
refactored both the integration and the WinitApp trait to follow this
pattern. I've left user_events a bit more opaque, as it seems 0.31.0 is
doing a rework of UserEvents too.
- I've used the new lazy init approach for access kit from this branch
https://github.com/mwcampbell/egui/tree/accesskit-new-lazy-init and
marked Matt as co-author, thanks Matt!
- There was very similair but not quite the same code for run_and_return
and run_and_exit. I've merged them, but looking at the github issues
graveyard it seems vey finnicky. I *hope* this is more robust than
before but it's a bit scary.
- when receiving new_events this also used to check the redraw timing
dictionary. That doesn't seem necesarry so left this out, but that is a
slight behaviour change?
- I have reeneabled serial_windows on macOS. I wondered whether it was
fixed after this PR and does seem to be! However, even before this PR it
seems to work, so maybe winit has sorted things out before that...
Windows also works fine now without the extra hack.
- I've done a very basic test of AccessKit on Windows and screen reader
seems ok but I'm really not knowleadgable enough to say whether it's all
good or not.
- I've tested cargo tests & all examples on Windows & macOS, and ran a
basic Android app. Still, testing native platforms is wel... hard so if
anyone can test linux / iOs / older mac versions / windows 10 would
probably be a good idea!
- For consistencys sake I've made all event like functions in WinitApp
return a `Result<EventResult>`. There's quite a bit of Ok-wrapping now,
maybe too annoying? Not sure.
Thank you for having a look!
# Tested on
* [x] macOS
* [x] Windows
* [x] Wayland (thanks [SiebenCorgie](https://github.com/SiebenCorgie))
* [x] X11 (thanks
[crumblingstatue](https://github.com/crumblingstatue)!,
[SiebenCorgie](https://github.com/SiebenCorgie))
# TODO
* [x] Fix "follow system theme" not working on initial startup (winit
issue, pinning to 0.30.2 for now).
* [x] Fix `request_repaint_after`
---------
Co-authored-by: mwcampbell <mattcampbell@pobox.com>
Co-authored-by: j-axa <josef.axa@gmail.com>
Co-authored-by: DataTriny <datatriny@gmail.com>
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
`directories-next` was created because `directories` was not maintained
at the time. However, `directories` has gotten active maintainership
since, and it has received more updates than `directories-next`.
`directories` also has more recent downloads than its `next`
counterpart, so it might make sense to switch to it, to avoid
unnecessary duplicate dependencies, where a project depends transitively
on both `directories` and `directories-next`.
The main question is whether we depend on any specific behavior from
`directories-next`.
The closure passed to `eframe::run_native` now returns a `Result`,
allowing you to return an error during app creation, which will be
returned to the caller of `run_native`.
This means you need to wrap your `Box::new(MyApp::new(…))` in an
`Ok(…)`.
* Closes https://github.com/emilk/egui/issues/4474
Currently, if the size of the canvas element changes independently of
the size of the browser window (e.g. due to its parent element
shrinking), then no repaints are scheduled.
This PR replaces the `resize` event with a `ResizeObserver`, which
ensures that _any_ resize of the canvas element (including those caused
by browser window resizes) trigger a repaint. The repaint is done
synchronously as part of the resize event, to reduce any potential
flickering.
The result seems to pass the rendering tests on most platform+browser
combinations. We tested:
- Chrome, Firefox, Safari on macOS
- Chrome, Firefox on Linux (ubuntu and arch, both running wayland)
- Chrome, Firefox on Windows
Firefox still has some antialiasing issues on Linux platforms, but this
antialiasing also happens on `master`, so this PR is not a regression
there.
The code setting `canvas.style.width` and `canvas.style.height` at the
start of `AppRunner::logic` was also removed - the canvas _display_ size
is now fully controlled by CSS, e.g. by setting `canvas { width: 100%;
height: 100%; }`.
The approach used here is described in
https://webglfundamentals.org/webgl/lessons/webgl-resizing-the-canvas.html
Note: The only remaining place where egui updates the style of the
canvas it is rendering to is some of the IME/mobile input handling code.
Fixing that is out of scope for this PR, and will be done in a followup
PR.
This allows customizing the persistence path in NativeOptions.
Previously, persistence wouldn't work with android because
directories-next doesn't support android so eframe would just fail to
find a place where it could store its config.
* Closes#4098 (android users can now specify a path that works with
android, by e.g. using app_dirs2, which supports android)
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* Closes https://github.com/emilk/egui/issues/4243
---------
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
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* Closes <https://github.com/emilk/egui/issues/4144>
# What's New
* eframe: Added `App::raw_input_hook` allows for the manipulation or
filtering of raw input events
A filter applied to raw input before [`Self::update`]
This allows for the manipulation or filtering of input events before
they are processed by egui.
This can be used to exclude specific keyboard shortcuts, mouse events,
etc.
Additionally, it can be used to add custom keyboard or mouse events
generated by a virtual keyboard.
* examples: Added an example to demonstrates how to implement a custom
virtual keyboard.
[eframe-custom-keypad.webm](https://github.com/emilk/egui/assets/1274171/a9dc8e34-2c35-4172-b7ef-41010b794fb8)
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Small spelling error - changed `Addintional` to `Additional`
This is required for Rust 1.72 (for unknown reasons; see
https://github.com/emilk/egui/pull/3595), but also for updating to glow
0.13, where the `glow::Context` is not longer `Sync+Send`
* Part of https://github.com/emilk/egui/issues/3556
This PR replaces a bunch of options in `eframe::NativeOptions` with
`egui::ViewportBuilder`. For instance:
``` diff
let options = eframe::NativeOptions {
- initial_window_size: Some(egui::vec2(320.0, 240.0)),
- drag_and_drop_support: true,
+ viewport: egui::ViewportBuilder::default()
+ .with_inner_size([320.0, 240.0])
+ .with_drag_and_drop(true),
centered: true,
..Default::default()
};
```
* eframe: Set app icon on Mac and Windows
Also: correctly set window title on Mac when launching from
another process, e.g. python.
Co-authored-by: Wumpf <andreas@rerun.io>
* lint fixes
* Fix web build
* fix typo
* Try fix windows build
---------
Co-authored-by: Wumpf <andreas@rerun.io>
* add method for requesting attention to the main window
* use another enum member for user attention type instead of nested `Option`s
(also, document the enum members now that they don't mirror `winit`)
* update the docstring
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* add an example app for testing window attention requests
* Apply suggestions from code review
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* remove `chrono` dependency and improve the attention example's readability
---------
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
It is very easy for keys to become stuck when we alt-tab,
or a save-dialog opens by Ctrl+S, etc.
Therefore we new clear all the modifiers and down keys to avoid that.
* Remove dark-light dependency
Since https://github.com/emilk/egui/pull/2750 we now get what we need
straight from `winit`.
* fix warning
* Docstring formatting
* fix typo in check.sh
* Replace tracing crate with log
It's just so much simpler to use
* Add `bacon wasm` job
* eframe: add a WebLogger for piping log events to the web console
* Add ability to read the native window's focus state
* Add `eframe::Frame::focus()` for requesting the native window's focus
* rename the output field `active` → `focused` for consistency
* React to ThemeChanged event from winit
* React to theme change using media query change event in WASM
* Share conversion from bool -> Theme
* Suppress too_many_arguments warning
* Document limitations of automatically following the dark vs light mode preference
* Simplify expression
* Conditionally compile code to prevent unused item warnings
* Remove needless borrow
* Remove another needless borrow
* Make associated functions to standalone
* Request repaint after theme has changed
* Only install event listener when `follow_system_theme` is enabled
* Remove dark-light feature gate
* Detect system theme using winit
* Update documentation
* Fix typos
* fix warning about unused argument
---------
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* Check that we can compile eframe with --no-default-features
* Allow compiling eframe with `--no-default-features`
This is useful for libraries that depend on `eframe::Frame`
but don't care what renderer eframe is using.
Timo von Hartz
Emil Ernerfeldt
lucasmerlin
Ted de Munnik
Jay Oster
Tau Gärtli
Liam Rosenfeld
Tim Straubinger
YgorSouza
Arthur Brussee
Jonas Wagner
crumblingstatue
Jan Procházka
lomekragow
Varphone Wong
crispy-strawberry
Fredrik Fornwall
Sebastian Urban
TicClick
Dixeran
Ruben
amfaber
SunDoge