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68 Commits

Author SHA1 Message Date
Tap
d7e55b8381 Group glow config in a struct (#8108)
This is a breaking public API change, but is otherwise trivial due to it
not changing any actual runtime behaviour.

This renames eframe's NativeOptions `vsync` option to `glow_vsync` to
make clear without even looking at docs fully that this is specific to
the `glow` backend.

While I think a better option would actually be to change the wgpu
creation options to match the vsync option if not specified (either to
`AutoVsync` or `AutoNoVsync` depending on setting) this would require
this be made an `Option<PresentMode>`, which would be confusing - and
the `WgpuConfiguration` should probably take priority over other options
here, as there's more than 2 present modes that are relevant. So I think
this is a suitable way to go.

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* This does not close an issue - this was a trivial amount of code to
change, so I might as well just make it a PR on the spot.
* [x] I have followed the instructions in the PR template

---------

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
2026-04-20 11:39:31 +02:00
Emil Ernerfeldt
8d98763fe1 Replace #[allow attributes with expect (#7796)
We do have `clippy::allow_attributes` turned on, but it doesn't seem to
work properly
2025-12-19 20:55:50 +01:00
Emil Ernerfeldt
7fe58bbfd4 Forbid uses of unwrap() in the code (#7795) 2025-12-19 20:34:18 +01:00
Emil Ernerfeldt
2f6fe9c572 eframe: Replace Frame::update with fn logic and fn ui (#7775)
* Part of https://github.com/emilk/egui/issues/5113
* Part of https://github.com/emilk/egui/issues/3524

## What
This deprecates `eframe::App::update` and replaces it with two new
functions:

```rs
pub trait App {
	/// Called just before `ui`, and in the future this will
    /// also be called for background apps when needed.
	fn logic(&mut self, ctx: &egui::Context, frame: &mut Frame) { }
	
    /// Show your user interface to the user.
	fn ui(&mut self, ui: &mut egui::Ui, frame: &mut Frame);

	…
}
```

Similarly, `Context::run` is deprecated in favor of `Context::run_ui`.

`Plugin`s are now handed a `Ui` instead of just a `Context` in
`on_begin/end_frame`.

## TODO
…either in this PR or a later one
* [x] Deprecate `App::update`
* [x] Deprecate `Context::run`
* [x] Change plugins to get a `Ui`
* [x] Update kittest
* [x] Change viewports to get UI:s (`show_viewport_immediate` etc)
  - https://github.com/emilk/egui/pull/7779

## Later PRs
* [ ] Deprecate `Panel::show`
* [ ] Deprecate `CentralPanel::show`
* [ ] Deprecate `CentralPanel` ?
2025-12-16 17:05:50 +01:00
Emil Ernerfeldt
86dc9ea64e Inline log format args (#7600) 2025-10-07 16:14:43 +02:00
Emil Ernerfeldt
3024c39eaf Enable and fix some more clippy lints (#7426)
One can never have too many lints
2025-08-08 09:57:53 +02:00
Emil Ernerfeldt
36a4981f29 Enable clippy::iter_over_hash_type lint (#7421)
This helped discover a few things that _might_ have been buggy.
2025-08-06 13:55:53 +02:00
Emil Ernerfeldt
f46926aaf1 Improve texture filtering by doing it in gamma space (#7311)
* Closes https://github.com/emilk/egui/pull/5839

This makes some transparent images look a lot nicer when blended:


![image](https://github.com/user-attachments/assets/7f370aaf-886a-423c-8391-c378849b63ca)

Cursive text will also look nicer.

This unfortunately changes the contract of what
`register_native_texture` expects

---------

Co-authored-by: Adrian Blumer <blumer.adrian@gmail.com>
2025-07-07 17:46:27 +02:00
valadaptive
7ac137bfc1 Make the font atlas use a color image (#7298)
* [x] I have followed the instructions in the PR template

Splitting this out from the Parley work as requested. This removes
`FontImage` and makes the font atlas use a `ColorImage`. It converts
alpha to coverage at glyph-drawing time, not at delta-upload time.

This doesn't do much now, but will allow for color emoji rendering once
we start using Parley.

I've changed things around so that we pass in `text_alpha_to_coverage`
to the `Fonts` the same way we do with `pixels_per_point` and
`max_texture_side`, reusing the existing code to check if the setting
differs and recreating the font atlas if so. I'm not quite sure why this
wasn't done in the first place.

I've left `ImageData` as an enum for now, in case we want to add support
for more texture pixel formats in the future (which I personally think
would be worthwhile). If you'd like, I can just remove that enum
entirely.
2025-07-04 13:15:48 +02:00
Emil Ernerfeldt
dc79998044 Improve text rendering in light mode (#7290)
This changes how we convert glyph coverage to alpha (and ultimately a
color), but only in light mode.

This is a bit of a hack, because it doesn't fix dark-on-light text in
_dark mode_ (if you have any), but for the common case this PR is a huge
improvement.

You can also tweak this yourself now using
`Visuals::text_alpha_from_coverage` or from the UI (bottom of the
image):


![image](https://github.com/user-attachments/assets/350210d4-c0bb-44b6-84cc-47c2e9d4b9f0)



## Before / After

![widget_gallery_light_x1](https://github.com/user-attachments/assets/21f5a2a0-6b4e-4985-b17f-cd1c7cc01b46)
![widget_gallery_light_x1](https://github.com/user-attachments/assets/5dfec04a-c81c-43ef-8d86-fc48ef7958f1)


## Black text Before/after
If you think the text above looks too weak, it's only because of the
default text color. Here's how it looks like with perfectly `#000000`
black text:


![image](https://github.com/user-attachments/assets/56a4a4f3-c431-4991-b941-a566a4ae94ed)
![Screenshot 2025-07-02 at 13 59
30](https://github.com/user-attachments/assets/df5a91ad-0bb8-4a0f-81a2-50852e7556c1)
2025-07-02 14:58:37 +02:00
Emil Ernerfeldt
b2995dcb83 Use Rust edition 2024 (#7280) 2025-06-30 14:01:57 +02:00
Emil Ernerfeldt
2cf6a3a9a6 Track original SVG size (#7098)
This fixes bugs related to how an `Image` follows the size of an SVG.

We track the "source size" of each image, i.e. the original width/height
of the SVG, which can be different from whatever it was rasterized as.
2025-05-28 08:33:01 +02:00
Emil Ernerfeldt
d0876a1a60 Rename master branch to main (#7034)
For consistency with other repositories, i.e. so I can write `git
checkout main` without worrying which repo I'm browsing.
2025-05-08 09:15:42 +02:00
Alexander Nadeau
6c922f72a8 Fix text distortion on mobile devices/browsers with glow backend (#6893)
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Did not test on platforms other than my phone, but I can't imagine it
causing problems. AFAIK if highp isn't supported then `precision highp
float;` needs to still not cause the program to fail to link/compile or
anything; it should just silently use some other precision.

* Fixes https://github.com/emilk/egui/issues/4268 for me but I only
tested it on a native Android app and I don't know whether backends
other than glow are affected.
* [x] I have followed the instructions in the PR template (but the
change is trivial so I'm just doing it from the master branch)

Before:

![image](https://github.com/user-attachments/assets/9f449749-5a48-4e9c-aef0-7a8ac3912eb6)

After:

![image](https://github.com/user-attachments/assets/544e5977-13e0-411a-bccf-b15a15289e28)
2025-04-30 14:12:08 +02:00
Emil Ernerfeldt
f9245954eb Enable more clippy lints (#6853)
* Follows https://github.com/emilk/egui/pull/6848
2025-04-24 17:32:50 +02:00
Nicolas
58b2ac88c0 Add assert messages and print bad argument values in asserts (#5216)
Enabled the `missing_assert_message` lint

* [x] I have followed the instructions in the PR template

---------

Co-authored-by: Lucas Meurer <lucasmeurer96@gmail.com>
2025-03-25 09:20:29 +01:00
Ted de Munnik
3af907919b Use profiling crate to support more profiler backends (#5150)
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

![image](https://github.com/user-attachments/assets/49fc0e7e-8f88-40cb-a69e-74ca2e3f90f3)
2024-12-16 09:15:54 +01:00
Samson
84cc1572b1 Update glow to 0.16 (#5395)
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---------

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>
2024-11-26 21:00:34 +01:00
Christofer Nolander
6f7b9b9b87 Add support for mipmap textures. (#5146)
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Adds support for mipmaps in the `glow` backend.

Should be possible to implement for `wgpu` in the future as well, but
requires a custom compute kernel.
2024-09-22 19:16:16 +02:00
Nicolas
343c3d16c3 Remove wildcard imports (#5018)
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I removed (I hope so) all wildcard imports I found.

For me on my pc this improved the build time:
- for egui -5s
- for eframe -12s

* [x] I have followed the instructions in the PR template
2024-08-28 12:18:42 +02:00
Arthur Brussee
1f6ae49a5f Unpin & upgrade winit to 0.30.5 (#4939)
This updates winit to 0.30.5. 

https://github.com/emilk/egui/pull/4849 Had to pin the version to
0.30.2, as a Winit patch changed the behavior of selecting a theme.
Winit 0.30.5 reverts this, so we could stick with `window.theme()`, but
the newly added `ActiveEventLoop::system_theme` is more like what egui
wants anyway, as individual windows can have theme overrides.

Also bump `smithay-clipboard` to prevent some now duplicate
dependencies.
2024-08-09 09:15:14 +02:00
Tau Gärtli
2dac4a4fc6 Follow the System Theme in egui (#4860)
* 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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### 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>
2024-08-06 20:17:51 +02:00
Arthur Brussee
6f2f006885 Upgrade winit to 0.30.2 (#4849)
* 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>
2024-07-31 09:43:16 +02:00
Jonas Wagner
b283b8a560 Introduce dithering to reduce banding (#4497)
This PR introduces dithering in the egui_glow and egui_wgpu backends to
reduce banding artifacts.

It's based on the approach mentioned in #4493 with the small difference
that the amount of noise is scaled down slightly to avoid dithering
colors that can be represented exactly. This keeps flat surfaces clean.

Exaggerated dithering to show what is happening:
![Screenshot from 2024-05-14
19-09-48](https://github.com/emilk/egui/assets/293536/75782b83-9023-4cb2-99f7-a24e15fdefcc)

Subtle dithering as commited.
![Screenshot from 2024-05-14
19-13-40](https://github.com/emilk/egui/assets/293536/eb904698-a6ec-494a-952b-447e9a49bfda)

Closes #4493
2024-07-08 09:57:11 +02:00
rustbasic
d9c5fb04ae Fix dragging of custom_window_frame example on Windows (#4656)
* Related #4592 
* Closes #4647 

Fix dragging of custom_window_frame on Windows (re-edited)
2024-06-19 16:19:41 +02:00
Oscar Gustafsson
cd45d18615 Do no use the ahash reimport (#4504)
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Related to #3482 

Not sure what the "best practice" is, to me it seems like one should
import from "the original location" if possible, but now it should at
least be possible to not re-export ahash without any breakage in the
egui code base (but possibly in projects using egui, so one should
probably deprecate it if one would like to go that path). It also seems
like epaint re-exports ahash.
2024-05-27 16:24:50 +02:00
Simon Frankau
c1fc9213c3 Enable egui_glow's winit feature on wasm (#4420) (#4421)
Reverts change in #1303, enabling the egui_glow::winit module when using
wasm.

* Closes <https://github.com/emilk/egui/issues/4420>
2024-04-29 10:33:23 +02:00
Emil Ernerfeldt
2f508d6a61 Replace cargo-cranky with workspace lints (#4413)
Replace `cargo-cranky` (which has served us well) with workspace lints
2024-04-25 17:24:50 +02:00
bu5hm4nn
a2f1ca31a0 Add ViewportCommand::RequestCut, RequestCopy and RequestPaste to trigger Clipboard actions (#4035)
### Motivation
We want to offer our users a context menu with `Cut`, `Copy` and `Paste`
actions. `Paste` is not possible out of the box.

### Changes
This PR adds `ViewportCommand::RequestCut`,
`ViewportCommand::RequestCopy` and `ViewportCommand::RequestPaste`. They
are routed and handled after the example of
`ViewportCommand::Screenshot` and result in the same code being executed
as when the user uses `CTRL+V` style keyboard commands.

### Reasoning
In our last release we used an instance of
`egui_winit:📋:Clipboard` in order to get the `Paste`
functionality.

However Linux users on Wayland complained about broken clipboard
interaction (https://github.com/mikedilger/gossip/issues/617). After a
while of digging I could not find the issue although I have found
references to problems with multiple clipboards per handle before
(https://gitlab.gnome.org/GNOME/mutter/-/issues/1250) but I compared
mutter with weston and the problem occured on both.

So to solve this I set out to extend egui to access the clipboard
instance already present in egui_winit. Since there was no trivial way
to reach the instance of `egui_winit::State` I felt the best approach
was to follow the logic of the new `ViewportCommand::Screenshot`.

### Variations
It could make sense to make the introduced `enum ActionRequested` a part
of crates/egui/src/viewport.rs and to then wrap them into one single
`ViewportCommand::ActionRequest(ActionRequested)`.

### Example
```Rust
let mut text = String::new();
let response = ui.text_edit_singleline(&mut text);
if ui.button("Paste").clicked() {
    response.request_focus();
    ui.ctx().send_viewport_cmd(ViewportCommand::RequestPaste);
}
```

---------

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
2024-04-22 09:06:33 +02:00
Magnus Larsen
21f08afcbb egui_glow: Only disable sRGB framebuffer on supported platforms (#3994)
This solves a GL_INVALID_ENUM error common on Windows (occurs on my
Windows 10 machine with a GTX 1070 Ti).

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ARB_framebuffer_SRGB is entirely unsupported on WebGL, hence why latest
egui (master branch) doesn't try to disable SRGB framebuffers on wasm32
and this PR's code doesn't even check for ARB_framebuffer_sRGB on
wasm32.

*  For <servo/servo#30782>
2024-02-08 08:54:14 +01:00
Dan Lock
a5973e5cac Add TextureOptions::wrap_mode (#3954)
Exposes support in both glow and wgpu for texture wrap modes

This would be breaking for manual creations of TextureOptions but would
work with the current TextureOptions::NEAREST and LINEAR without change,
keeping those clamp to edge

I wasn't sure how best to expose the options to the user and added
consts for LINEAR_REPEAT LINEAR_MIRRORED_REPEAT NEAREST_REPEAT
NEAREST_MIRRORED_REPEAT

This does not include wrap mode clamp to border as it worked fine with
glow but with wgpu it panics due to Features
Features(ADDRESS_MODE_CLAMP_TO_BORDER) are required but not enabled on
the device, and I thought it was probably best not to try to enable that
feature, but happy to include that functionality also if that is okay to
be toggled


![image](https://github.com/emilk/egui/assets/5075747/bba71f61-a105-4e5b-b8ce-1083621eb3de)

---------

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
2024-02-05 09:37:05 +01:00
Emil Ernerfeldt
401de05630 Use Self everywhere (#3787)
This turns on the clippy lint
[`clippy::use_self`](https://rust-lang.github.io/rust-clippy/v0.0.212/index.html#use_self)
and fixes it everywhere.
2024-01-08 17:41:21 +01:00
Fredrik Fornwall
8e5959d55d Update to winit 0.29 (#3649)
* Closes https://github.com/emilk/egui/issues/3542
* Closes https://github.com/emilk/egui/issues/2977
* Closes https://github.com/emilk/egui/issues/3303

---------

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
2023-12-18 14:53:14 +01:00
Emil Ernerfeldt
8d4de866d4 Remove deprecated functions (#3692) 2023-12-08 11:02:57 +01:00
Emil Ernerfeldt
a4e389431d Simplify egui_winit::State (#3678)
By storing a clone of the egui context in it, we can be sure to always
use the correct `pixels_per_point`
2023-12-05 11:45:25 +01:00
Sebastian Urban
36c6b6304d Make glow Send + Sync again. (#3646)
* Reverts #3598
* Closes #3645
2023-12-04 15:58:05 +01:00
Emil Ernerfeldt
bd9bc252aa Fix buggy text withviewports on monitors with different scales (#3666)
* Closes https://github.com/emilk/egui/issues/3664

Bonus: optimize color conversions and font atlas upload, especially in
debug builds.
2023-11-30 15:56:05 +01:00
Emil Ernerfeldt
61a7b90d5b Improve multi-viewports across monitors with different scales (#3663)
It required some ugly code in `egui-winit` in order to fix this without
breaking sem-ver (I want this to land in a 0.24.1 patch release). I'll
clean up in time for 0.25.

There is still a font rendering bug when using immediate viewports
across multiple viewports, but that's harder to fix.
2023-11-30 12:08:53 +01:00
Andreas Reich
f9f5db9885 PaintCallbackInfo::viewport_in_pixels now guarantees to stay in bounds (#3604)
* Fixes https://github.com/rerun-io/rerun/issues/4297
* tested against a very hasty and incomplete port of egui/trunk, found
[here](https://github.com/rerun-io/rerun/tree/andreas/experimental-egui-trunk)


In rare cases in can happen that the viewport returned by
`PaintCallbackInfo` is outside the bounds of the screen.
for at least [wgpu/webgpu in
particular](https://www.w3.org/TR/webgpu/#dom-gpurenderpassencoder-setviewport)
this is invalid usage, other backends might be affected as well.
Since this happened due to a float rounding error (in one repro case I
had I got (width==1126.5625) + (offset=715.4376) = 1842.0001 for a
resolution of 1842) I decided to do away with fractional values on the
viewport alltogether. They _technically_ make sense since a viewport is
only specifying the NDC to pixel coordinate conversion, but practically
this may lead to surprising sub-sampling issues.

---------

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
2023-11-22 21:01:38 +01:00
Emil Ernerfeldt
63e48dc855 Introduce global zoom_factor (#3608)
* Closes https://github.com/emilk/egui/issues/3602

You can now zoom any egui app by pressing Cmd+Plus, Cmd+Minus or Cmd+0,
just like in a browser. This will change the current `zoom_factor`
(default 1.0) which is persisted in the egui memory, and is the same for
all viewports.
You can turn off the keyboard shortcuts with `ctx.options_mut(|o|
o.zoom_with_keyboard = false);`

`zoom_factor` can also be explicitly read/written with
`ctx.zoom_factor()` and `ctx.set_zoom_factor()`.

This redefines `pixels_per_point` as `zoom_factor *
native_pixels_per_point`, where `native_pixels_per_point` is whatever is
the native scale factor for the monitor that the current viewport is in.

This adds some complexity to the interaction with winit, since we need
to know the current `zoom_factor` in a lot of places, because all egui
IO is done in ui points. I'm pretty sure this PR fixes a bunch of subtle
bugs though that used to be in this code.

`egui::gui_zoom::zoom_with_keyboard_shortcuts` is now gone, and is no
longer needed, as this is now the default behavior.

`Context::set_pixels_per_point` is still there, but it is recommended
you use `Context::set_zoom_factor` instead.
2023-11-22 20:34:51 +01:00
Emil Ernerfeldt
ea53246c60 Refactor viewport ids in eframe (#3607)
Simplifies some things
2023-11-22 13:50:43 +01:00
Emil Ernerfeldt
bfadb90d42 Update MSRV to Rust 1.72 (#3595)
Required to update to puffin 0.18
2023-11-21 17:26:35 +01:00
Emil Ernerfeldt
7abf8afd16 Change Arc<glow::Context> to Rc<glow::Context> (#3598)
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`
2023-11-21 17:13:46 +01:00
Emil Ernerfeldt
44ff29b012 Fix closing of viewports (#3591)
This ensures the closed viewport gets a close-event, and that it and the
parent viewport gets repainting, allowing the event to be registered.
2023-11-20 17:43:40 +01:00
Emil Ernerfeldt
30ee478caf Fix egui-wgpu performance regression (#3580)
Introduced in the recent multi-viewports work, we accidentally recreated
the wgpu surfaces every frame. This is now fixed.

I found this while improving the profiling of `eframe`
2023-11-19 21:14:13 +01:00
Emil Ernerfeldt
1571027556 Replace eframe::Frame commands and WindowInfo with egui (#3564)
* Part of https://github.com/emilk/egui/issues/3556

## In short
You now almost never need to use `eframe::Frame` - instead use
`ui.input(|i| i.viewport())` for information about the current viewport
(native window), and use `ctx.send_viewport_cmd` to modify it.

## In detail

This PR removes most commands from `eframe::Frame`, and replaces them
with `ViewportCommand`.
So `frame.close()` becomes
`ctx.send_viewport_cmd(ViewportCommand::Close)`, etc.

`frame.info().window_info` is now also gone, replaced with `ui.input(|i|
i.viewport())`.

`frame.info().native_pixels_per_point` is replaced with `ui.input(|i|
i.raw.native_pixels_per_point)`.

`RawInput` now contains one `ViewportInfo` for each viewport.

Screenshots are taken with
`ctx.send_viewport_cmd(ViewportCommand::Screenshots)` and are returned
in `egui::Event` which you can check with:

``` ust
ui.input(|i| {
    for event in &i.raw.events {
        if let egui::Event::Screenshot { viewport_id, image } = event {
            // handle it here
        }
    }
});
```

### Motivation
You no longer need to pass around the `&eframe::Frame` everywhere.
This also opens the door for other integrations to use the same API of
`ViewportCommand`s.
2023-11-18 19:27:53 +01:00
Konkitoman
83aa3109d3 Multiple viewports/windows (#3172)
* Closes #1044

---
(new PR description written by @emilk)

## Overview
This PR introduces the concept of `Viewports`, which on the native
eframe backend corresponds to native OS windows.

You can spawn a new viewport using `Context::show_viewport` and
`Cotext::show_viewport_immediate`.
These needs to be called every frame the viewport should be visible.

This is implemented by the native `eframe` backend, but not the web one.

## Viewport classes
The viewports form a tree of parent-child relationships.

There are different classes of viewports.

### Root vieport
The root viewport is the original viewport, and cannot be closed without
closing the application.

### Deferred viewports
These are created with `Context::show_viewport`.
Deferred viewports take a closure that is called by the integration at a
later time, perhaps multiple times.
Deferred viewports are repainted independenantly of the parent viewport.
This means communication with them need to done via channels, or
`Arc/Mutex`.

This is the most performant type of child viewport, though a bit more
cumbersome to work with compared to immediate viewports.

### Immediate viewports
These are created with `Context::show_viewport_immediate`.
Immediate viewports take a `FnOnce` closure, similar to other egui
functions, and is called immediately. This makes communication with them
much simpler than with deferred viewports, but this simplicity comes at
a cost: whenever tha parent viewports needs to be repainted, so will the
child viewport, and vice versa. This means that if you have `N`
viewports you are poentially doing `N` times as much CPU work. However,
if all your viewports are showing animations, and thus are repainting
constantly anyway, this doesn't matter.

In short: immediate viewports are simpler to use, but can waste a lot of
CPU time.

### Embedded viewports
These are not real, independenant viewports, but is a fallback mode for
when the integration does not support real viewports. In your callback
is called with `ViewportClass::Embedded` it means you need to create an
`egui::Window` to wrap your ui in, which will then be embedded in the
parent viewport, unable to escape it.


## Using the viewports
Only one viewport is active at any one time, identified wth
`Context::viewport_id`.
You can send commands to other viewports using
`Context::send_viewport_command_to`.

There is an example in
<https://github.com/emilk/egui/tree/master/examples/multiple_viewports/src/main.rs>.

## For integrations
There are several changes relevant to integrations.

* There is a [`crate::RawInput::viewport`] with information about the
current viewport.
* The repaint callback set by `Context::set_request_repaint_callback`
now points to which viewport should be repainted.
* `Context::run` now returns a list of viewports in `FullOutput` which
should result in their own independant windows
* There is a new `Context::set_immediate_viewport_renderer` for setting
up the immediate viewport integration
* If you support viewports, you need to call
`Context::set_embed_viewports(false)`, or all new viewports will be
embedded (the default behavior).


## Future work
* Make it easy to wrap child viewports in the same chrome as
`egui::Window`
* Automatically show embedded viewports using `egui::Window`
* Use the new `ViewportBuilder` in `eframe::NativeOptions`
* Automatically position new viewport windows (they currently cover each
other)
* Add a `Context` method for listing all existing viewports

Find more at https://github.com/emilk/egui/issues/3556




---

<details>
<summary>
Outdated PR description by @konkitoman
</summary>


## Inspiration
- Godot because the app always work desktop or single_window because of
embedding
- Dear ImGui viewport system

## What is a Viewport

A Viewport is a egui isolated component!
Can be used by the egui integration to create native windows!

When you create a Viewport is possible that the backend do not supports
that!
So you need to check if the Viewport was created or you are in the
normal egui context!
This is how you can do that:
```rust
if ctx.viewport_id() != ctx.parent_viewport_id() {
    // In here you add the code for the viewport context, like
    egui::CentralPanel::default().show(ctx, |ui|{
        ui.label("This is in a native window!");
    });
}else{
    // In here you add the code for when viewport cannot be created!
   // You cannot use CentralPanel in here because you will override the app CentralPanel
   egui::Window::new("Virtual Viewport").show(ctx, |ui|{
       ui.label("This is without a native window!\nThis is in a embedded viewport");
   });
}
```

This PR do not support for drag and drop between Viewports!

After this PR is accepted i will begin work to intregrate the Viewport
system in `egui::Window`!
The `egui::Window` i want to behave the same on desktop and web
The `egui::Window` will be like Godot Window

## Changes and new

These are only public structs and functions!

<details>
<summary>

## New
</summary>

- `egui::ViewportId`
- `egui::ViewportBuilder`
This is like winit WindowBuilder

- `egui::ViewportCommand`
With this you can set any winit property on a viewport, when is a native
window!

- `egui::Context::new`
- `egui::Context::create_viewport`
- `egui::Context::create_viewport_sync`
- `egui::Context::viewport_id`
- `egui::Context::parent_viewport_id`
- `egui::Context::viewport_id_pair`
- `egui::Context::set_render_sync_callback`
- `egui::Context::is_desktop`
- `egui::Context::force_embedding`
- `egui::Context::set_force_embedding`
- `egui::Context::viewport_command`
- `egui::Context::send_viewport_command_to`
- `egui::Context::input_for`
- `egui::Context::input_mut_for`
- `egui::Context::frame_nr_for`
- `egui::Context::request_repaint_for`
- `egui::Context::request_repaint_after_for`
- `egui::Context::requested_repaint_last_frame`
- `egui::Context::requested_repaint_last_frame_for`
- `egui::Context::requested_repaint`
- `egui::Context::requested_repaint_for`
- `egui::Context::inner_rect`
- `egui::Context::outer_rect`

- `egui::InputState::inner_rect`
- `egui::InputState::outer_rect`

- `egui::WindowEvent`

</details>

<details>
<summary>

## Changes
</summary>

- `egui::Context::run`
Now needs the viewport that we want to render!

- `egui::Context::begin_frame`
Now needs the viewport that we want to render!

- `egui::Context::tessellate`
Now needs the viewport that we want to render!

- `egui::FullOutput`
```diff
- repaint_after
+ viewports
+ viewport_commands
```

- `egui::RawInput`
```diff
+ inner_rect
+ outer_rect
```

- `egui::Event`
```diff
+ WindowEvent
```
</details>

### Async Viewport

Async means that is independent from other viewports!

Is created by `egui::Context::create_viewport`

To be used you will need to wrap your state in `Arc<RwLock<T>>`
Look at viewports example to understand how to use it!

### Sync Viewport

Sync means that is dependent on his parent!

Is created by `egui::Context::create_viewport_sync`

This will pause the parent then render itself the resumes his parent!

#### ⚠️ This currently will make the fps/2 for every sync
viewport

### Common

#### ⚠️ Attention

You will need to do this when you render your content
```rust
ctx.create_viewport(ViewportBuilder::new("Simple Viewport"), | ctx | {
    let content = |ui: &mut egui::Ui|{
        ui.label("Content");
    };

    // This will make the content a popup if cannot create a native window
    if ctx.viewport_id() != ctx.parent_viewport_id() {
        egui::CentralPanel::default().show(ctx, content);
    } else {
        egui::Area::new("Simple Viewport").show(ctx, |ui| {
            egui::Frame::popup(ui.style()).show(ui, content);
        });
    };
});
````

## What you need to know as egui user

### If you are using eframe

You don't need to change anything!

### If you have a manual implementation

Now `egui::run` or `egui::begin` and `egui::tessellate` will need the
current viewport id!
You cannot create a `ViewportId` only `ViewportId::MAIN`

If you make a single window app you will set the viewport id to be
`egui::ViewportId::MAIN` or see the `examples/pure_glow`
If you want to have multiples window support look at `crates/eframe`
glow or wgpu implementations!

## If you want to try this

- cargo run -p viewports

## This before was wanted to change

This will probably be in feature PR's

### egui::Window

To create a native window when embedded was set to false
You can try that in viewports example before:
[78a0ae8](78a0ae879e)

### egui popups, context_menu, tooltip

To be a native window

</details>

---------

Co-authored-by: Konkitoman <konkitoman@users.noreply.github.com>
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
Co-authored-by: Pablo Sichert <mail@pablosichert.com>
2023-11-16 11:25:05 +01:00
Emil Ernerfeldt
f138131bc8 Improve top-level crate docs, and sort features is Cargo.toml 2023-09-27 11:40:28 +02:00
Emil Ernerfeldt
d7d222d3f6 Polish image API (#3338)
* Imoprove docs for callback shapes

* Improve docs for loader traits

* Use snake_case for feature `all_loaders`

* Make loaders publix

* Slightly better error message on image load failure

* Improve image loading error messages

* Use `bytes://` schema for included bytes loader

* Try user loaders first

* Move `image_loading_spinners` to `Visuals`

* Unify and simplify code

* Make the main text of `Button` optional

This largely makes ImageButton obsolete

* Fix docstrings

* Better docs

* typos

* Use the more explicit `egui_extras::install_image_loaders`

* Simplify `Image::paint_at` function
2023-09-14 16:33:10 +02:00
Emil Ernerfeldt
fc3bddd0cf Add more puffin profile scopes to eframe (#3330)
* Add puffin profile scopes to the startup and running of eframe

* puffin_profiler example: start puffin right away

* cargo format let-else statements

* More profile scopes

* Add some `#[inline]`

* Standardize puffin profile scope definitions

* standardize again

* Silence warning when puffin is disabled
2023-09-13 09:00:38 +02:00