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* Closes#7809
* Closes#7876
* Closes#7908
* Supersedes #7877
* Supersedes #7898
* The author of the PR above replaced it with #7914, which additionally
fixes another IME issue. I believe that fix deserves a separate PR.
* Reverts #4794
* [x] I have followed the instructions in the PR template
This approach is better than #7898 (#7914) because it correctly handles
all three major IME types (Chinese, Japanese, and Korean) without
requiring a predefined “IME mode”.
## Environments I haved tested this PR in
<details><summary>macOS 15.7.3 (AArch64, Host of other virtual
machines)</summary>
Run command: `cargo run -p egui_demo_app --release`
Tested IMEs:
- builtin Chinese IME (Shuangpin - Simplified)
- builtin Japanese IME (Romaji)
- builtin Korean IME (2-Set)
</details>
<details><summary>Windows 11 25H2 (AArch64, Virtual Machine)</summary>
Build command: `cargo build --release -p egui_demo_app
--target=x86_64-pc-windows-gnu --features=glow --no-default-features`
(I cannot use `wgpu` due to [this
bug](https://github.com/emilk/egui/issues/4381), which prevents
debugging inside the VM. Anyways, the rendering backend should be
irrelevant here.)
Tested IMEs:
- builtin Chinese IME (Shuangpin)
- Sogou IME (Chinese Shuangpin)
- WeType IME (Chinese Shuangpin)
- builtin Japanese IME (Hiragana)
- builtin Korean IME (2 Beolsik)
</details>
<details><summary>Linux [Wayland + IBus] (AArch64, Virtual
Machine)</summary>
Fedora KDE Plasma Desktop 43 [Wayland + IBus 1.5.33-rc2]
(Not working at the moment because of [another
issue](https://github.com/emilk/egui/issues/7485) that will be fixed by
#7983. It is [a complicated
story](https://github.com/emilk/egui/pull/7973#issuecomment-4074627603).
)
> [!NOTE]
>
> IBus is partially broken in this system. The Input Method Selector
refuses to select IBus. As a workaround, I have to open System Settings
-> Virtual Keyboard and select “IBus Wayland” to start an IBus instance
that works in egui.
>
> The funny thing is: the Chinese Intelligent Pinyin IME is broken in
native Apps like System Settings and KWrite, but works correctly in
egui!
>
> <details><summary>Screencast: What</summary>
>
> 
> </details>
Build command: `cross build --release -p egui_demo_app
--target=aarch64-unknown-linux-gnu --features=wayland,wgpu
--no-default-features`
(The Linux toolchain on my mac is somehow broken, so I used `cross`
instead.)
Tested IMEs:
- Chinese Intelligent Pinyin IME (Shuangpin)
- Japanese Anthy IME (Hiragana)
- Korean Hangul IME
</details>
<details><summary>Linux [X11 + Fcitx5] (AArch64, Virtual
Machine)</summary>
Debian 13 [Cinnamon 6.4.10 + X11 + Fcitx5 5.1.2]
Build command: `cross build --release -p egui_demo_app
--target=aarch64-unknown-linux-gnu --features=x11,wgpu
--no-default-features`
Tested IMEs:
- Chinese Shuangpin IME
- Chinese Rime IME with `luna-pinyin`
- Japanese Mozc IME (Hiragana)
- Korean Hangul IME
Unlike macOS and Linux + Wayland, key-release events for keys processed
by the IME are still forwarded to `egui`. These appear to be harmless in
practice.
Unlike on Windows, however, they cannot be filtered reliably because
there are no corresponding key-press events marked as “processed by
IME”.
</details>
---
There are too many possible combinations to test (Operating Systems ×
[Desktop
Environment](https://en.wikipedia.org/wiki/Desktop_environment)s ×
[Windowing System](https://en.wikipedia.org/wiki/Windowing_system)s ×
[IMF](https://wiki.archlinux.org/title/Input_method#Input_method_framework)s
× [IME](https://en.wikipedia.org/wiki/Input_method)s × …), and I only
have access to a limited subset. For example, Google Japanese Input
refused to install on my Windows VM, and some paid Japanese IMEs are not
accessible to me. Therefore, I would appreciate feedback from people
other than me using all kinds of environments.
## Details
There are two possible approaches to removing keyboard events that have
already been processed by an IME:
* Approach 1: Filter out events inside `egui` that appear to have been
received during IME composition.
* Approach 2: Filter out such events in the platform backend
(terminology [borrowed from
imgui](https://github.com/ocornut/imgui/blob/master/docs/BACKENDS.md#using-standard-backends),
e.g. the `egui-winit` crate or the code under `web/` in the `eframe`
crate.).
Both approaches already exist in `egui`:
* #4794 uses the first approach, filtering these events in the
`TextEdit`-related code.
* `eframe` uses the second approach in its web integration. See:
<14afefa252/crates/eframe/src/web/events.rs (L173-L176)>
Compared to the first approach, the second has a clear advantage: when
events are passed from the platform backends into `egui`, they are
simplified and lose information. In contrast, events in the platform
backends are the original events, which allows them to be handled more
flexibly. This is also why #7898 (#7914), which attempts to address the
issue from within the `egui` crate, struggles to make all IMEs work
correctly at the same time and requires manually selecting an “IME
mode”: the events received by `egui` have already been reduced and
therefore lack necessary information.
A more appropriate solution is to consistently follow the second
approach, explicitly requiring platform backends not to forward events
that have already been processed by the IME to `egui`. This is the
method used in this PR. Specifically, this PR works within the
`egui-winit` crate, where the original `KeyboardInput` events can be
accessed. At least for key press events, these can be used directly to
determine whether the event has already been processed by the IME on
Windows (by checking whether `logical_key` equals
`winit:⌨️:NamedKey::Process`). This makes it straightforward to
ensure that all IMEs work correctly at the same time.
This PR also reverts #4794, which took the first approach. It filters
out some events that merely look like they were received during IME
composition but actually are not. It also messes up the order of those
events along the way.
As a result, it caused several IME-related issues. One of the sections
in the Demonstrations below will illustrate these problems.
## Demonstrations
<details><summary>Changes not included in this PR for displaying Unicode
characters in demonstrations</summary>
Download `unifont-17.0.03.otf` from
<https://unifoundry.com/pub/unifont/unifont-17.0.03/font-builds/>, and
place it at `crates/egui_demo_app/src/unifont-17.0.03.otf`.
In `crates/egui_demo_app/src/wrap_app.rs`, add these lines at the
beginning of `impl WrapApp`'s `pub fn new`:
```rust
{
const MAIN_FONT: &'static [u8] = include_bytes!("./unifont-17.0.03.otf");
let mut fonts = egui::FontDefinitions::default();
fonts.font_data.insert(
"main-font".to_owned(),
std::sync::Arc::new(egui::FontData::from_static(MAIN_FONT)),
);
let proportional = fonts
.families
.entry(egui::FontFamily::Proportional)
.or_default();
proportional.insert(0, "main-font".to_owned());
cc.egui_ctx.set_fonts(fonts);
}
```
(I took this from somewhere, but I forgot where it is. Sorry…)
</details>
[GNU Unifont](https://unifoundry.com/unifont/index.html) is licensed
under [OFL-1.1](https://unifoundry.com/OFL-1.1.txt).
### This PR Fixes: Focus on a single-line `TextEdit` is lost after
completing candidate selection with Japanese IME on Windows (#7809)
<details><summary>Screencast: ✅ Japanese IME now behaves correctly while
Korean IME behaves as before</summary>
</details>
### This PR Fixes: Committing Japanese IME text with <kbd>Enter</kbd>
inserts an unintended newline in multiline `TextEdit` on Windows (#7876)
<details><summary>Screencast: ✅ Japanese IME now behaves correctly while
Korean IME behaves as before</summary>
</details>
### This PR Fixes: Backspacing deletes characters during composition in
certain Chinese IMEs (e.g., Sogou) on Windows (#7908)
<details><summary>Screencast: ✅ Sogou IME now behaves
correctly</summary>
</details>
### This PR Obsoletes #4794, because `egui` receives only IME events
during composition from now on
On Windows, “incompatible” events are filtered in `egui-winit`, aligning
the behavior with other systems.
<details><summary>Screencasts</summary>
Some Chinese IMEs on Windows:
The default Japanese IMEs on Windows:
</details>
The 2-set Korean IMEs handle arrow keys differently. It will be
discussed in the next section.
### This PR Reverts #4794, because it introduced several bugs
Some of its bugs have already been worked around in the past, but those
workarounds might also be problematic. For example, #4912 is a
workaround for a bug (#4908) introduced by #4794, and that workaround is
in fact the root cause of the macOS backspacing bug I have worked around
with #7810. (The reversion of #4912 is out of the scope of this PR, I
will do that in #7983.)
#### It Caused: Arrow keys are incorrectly blocked during typical Korean
IME composition
When composing Korean text using 2-Set IMEs, users should still be able
to move the cursor with arrow keys regardless if the composition is
committed.
##### Correct behavior
<details><summary>Screencasts</summary>
macOS TextEdit:
Windows Notepad:
With #4794 reverted, `egui` also behaves correctly (tested on Linux +
Wayland, macOS, and Windows):
</details>
##### Incorrect behavior caused by #4794
`remove_ime_incompatible_events` removed arrow-key events in such cases.
As a result, the first arrow key press only commits the composition, and
users need to press the arrow key again to move the cursor:
<details><summary>Screencast</summary>
</details>
This is essentially the same issue described here:
https://github.com/emilk/egui/pull/7877#issuecomment-3852719948
#### It Caused: Backspacing leaves the last character in Korean IME
pre-edit text not removed on macOS
<details><summary>Screencasts</summary>
Before this PR:
After this PR:
</details>
### Korean IMEs also use <kbd>Enter</kbd> to confirm Hanja selections,
and will not work properly in the Korean “IME mode” proposed by #7898
(#7914)
<details><summary>Screencast: Korean IME using <kbd>Enter</kbd> and
<kbd>Space</kbd> for confirmation (IBus Korean Hangul IME)</summary>
The screencast below demonstrates that some Korean IMEs handle Hanja
selection in a way similar to Japanese IMEs: the
<kbd>Up</kbd>/<kbd>Down</kbd> arrow keys are used to navigate
candidates, and <kbd>Enter</kbd> confirms the selected candidate.
</details>
<details><summary>Screencasts: Another example</summary>
Using the built-in Korean IME on Windows, I type two lines: the first
line in Hangul, and the second line as the same word converted to Hanja.
Correct behavior in Notepad (reference):
Behavior after applying this PR, which matches the Notepad behavior:
Behavior after applying #7914 with the “IME mode” set to Korean (which
is also the behavior before this PR being applied):
On the second line, each time a Hanja character is confirmed, an
unintended newline is inserted. This mirrors the Japanese IME issues
that are supposed to be fixed by setting the “IME mode” to Japanese.
(These Japanese IME issues are fixed in this PR as mentioned before.)
</details>
* [x] I have followed the instructions in the PR template
This PR have two commits:
* **First commit** - introduction of tests and their canonization image.
Expected behaviour is that `horizontal_wrapped_multiline_row_height`
would match `horizontal_wrapped_multiline_row_height_reference`, but it
doesn't. There is a bug in `horizontal_wrapped` that breaks line height
after using `text_edit_multiline`.
* **Second commit** - fix. You can see that
`horizontal_wrapped_multiline_row_height` now looks like
`horizontal_wrapped_multiline_row_height_reference` (although it's not a
perfect match, upd: found, this is because of this issue:
https://github.com/emilk/egui/issues/4921).
I have used LLM to help me with this PR (codex + claude code).
BTW, I'm using horizontal_wrapped with end_row instead of vertical +
horizontal alternation, because I automatically generate my UI through
some complex interactions between elements in my code, and it's can be
that my `horizontal` starts in one function, and ends in another.
Something like `begin_horizontal`/`end_horizontal`/`get_current_layout`
would be very handy, related to
https://github.com/emilk/egui/issues/1004.
Also, I would like indent to be supported in `horizontal_wrapped`, or
also, to have `indent_start`/`indent_end`. This is why I used
`monospace("| ")` in my example, it simulates my use-case.
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This is a fix/improvement that makes all kinds of alignments work in
`TextEdit` when a custom `LayoutJob` with halign is used.
I used the simplest approach possible to avoid unwanted bugs as I wasn't
sure what's safe to change, but there's potentially better ways to
achieve this. In particular, I'm not sure I fully understand the
rationale behind aligning rows in a `Galley` based on the latter's
leftmost border, considering the size is what's ultimately used in
widgets (in `TextEdit` at least).
Regardless, here's a demo of this PR:
https://github.com/user-attachments/assets/5d9801d7-73af-4576-80c5-47f169700462
* [x] I have followed the instructions in the PR template
---------
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
This is necessary to add e.g. buttons as prefix/suffix within the
textedit (so you can read the rect and place the button).
I'm not sure if deref on the AtomLayoutResponse is the right call but it
should make the migration easier and is generally convenient (but might
lead to some confusion).
* [x] I have followed the instructions in the PR template
This updates wgpu to v29 across the egui crate stack.
There a a few API changes due to the requirement to provide a display
handle up front to properly support GLES on linux. I have done my best
to make the api changes as reasonable as possible, but I don't have all
the greater project context, so lmk if things should be done a bit
differently.
I've also updated glow to 0.17 to make cargo deny happy, there are no
source changes. I'm not sure how you want to land these.
---------
Co-authored-by: lucasmerlin <hi@lucasmerlin.me>
* Found thanks to https://github.com/emilk/egui/pull/7984
If you put an animated `Panel` inside a `Ui`, then the automatic ids for
following widgets would differ when the panel was collapsed or open.
This adds `Ctrl-Q` as the default shortcut for closing the current egui
`Viewport`, which also means closing the entire application if you are
in the root viewport.
Can be configured by `egui::Options::quit_shortcuts`
On Mac, `cmd-Q` already triggers a quit, but not on all Linux:es.
If turned on (default in debug builds), if the exact same `Rect` exist
in two subsequent frames but with different `Id`s, a warning is logged
an a red rect is flashed on the screen.
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* Closes N/A
* [x] I have followed the instructions in the PR template
My PR that fixes the macOS backspacing issue (#7810) unfortunately
breaks text selection on Wayland (Fedora KDE Plasma Desktop 43 [Wayland,
with or without IBus]). I had actually tested on a Wayland setup but
failed to notice that :(
Windows and Linux+X11 (Debian 13 [Cinnamon 6.4.10 + X11 + fcitx5 5.1.2])
are not affected.
This PR fixes the issue by restricting the macOS fix to macOS-only.
<details><summary>Here is the correct behavior on Wayland after this PR
(and before #7810 is applied)</summary>
</details>
<details><summary>Here is the buggy behavior on Wayland before this
PR</summary>
</details>
## Cause of the Wayland issue
On Wayland, `winit` constantly emits `winit::event::Ime::Preedit("",
None)` events.
PR #7810 added these lines for handling `winit::event::Ime::Preedit(_,
None)` in `egui-winit` without considering the `target_os`:
14afefa252/crates/egui-winit/src/lib.rs (L619-L621)
As a result, while text is being selected, `egui-winit` receives these
`winit::event::Ime::Preedit("", None)` events from `winit` and forwards
them to `egui` as `egui::ImeEvent::Preedit("")`. `egui` then clears the
current text selection, because it currently does not distinguish
between IME pre-edit text and selected text.
---------
Co-authored-by: lucasmerlin <hi@lucasmerlin.me>
- fix for https://github.com/rerun-io/reality/pull/1075
The galleys row size was calculated by looking at the last glyphs pos_x,
which got changed to be rounded to integers when we added subpixel
binning. This introduced a subtle bug which caused the width of galleys
to be slightly off.
This PR fixes this by looking at the actual cursor position instead,
which is not rounded.
Also added a test to ensure this is correct. Previously, for the second
and last line, the `x` was too close to the `0`.
<img width="48" height="67" alt="image"
src="https://github.com/user-attachments/assets/a69a4cc3-b3f3-4553-ab92-73cb2e7a358c"
/>
---------
Co-authored-by: lucasmerlin <8009393+lucasmerlin@users.noreply.github.com>
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* Closes N/A
* [x] I have followed the instructions in the PR template
This was mostly from last month, but I never got around to submitting
it.
This PR adds font variation coordinates to the `TextFormat` struct, and
uses them when rendering text. The coordinates are stored in a
`SmallVec`; I've chosen to store up to 2 inline, which makes it take up
24 bytes (the minimum possible for a `SmallVec`). The variation axis
tags are stored as the `font_types::Tag` type, which I've chosen to
re-export from `epaint::text`.
The variation coordinates are resolved to a `skrifa::Location` during
font rendering/scaling, and are cached in the same way as all the other
scaled metrics. I've renamed the `ScaledMetrics` struct to
`StyledMetrics`, since it now also contains the resolved variation
coordinates. I haven't benchmarked the performance of text layout with
variation coordinates, but the existing text layout performance is
unchanged.
I've replaced the API for manually overriding a font's weight
(https://github.com/emilk/egui/pull/7790) with an API for manually
overriding any variation coordinates via `FontTweak`. This should
support the same use case as #7790 while being substantially more
flexible.
I have *not* yet added any higher-level API for mapping style attributes
(weight, width, slant, etc) to variation coordinates or to different
font faces within a single family. That's a pretty huge can of worms,
and it'd involve rethinking the split between `FontId` and `TextFormat`
(and whether `FontId` is so big that we should provide a way to reuse
it). This API is intentionally pretty low-level for now.
Likewise, I've intentionally not used variation coordinates when
computing a font's row height. I can't think of any fonts that change
their vertical metrics depending on variation axes, so this should be
fine for now.
---------
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* [x] I have followed the instructions in the PR template
This PR just exposes the pos_from_layout_cursor function as public.
Hi, I'm trying to make a git gui with a merge editor, and for this I
need a much more efficient and flexible text editor than the one
currently in egui. So I'm working on building a more suitable one, which
I intend to contribute back once it's working, but for now I would like
to not need to fork the entirety of egui. By exposing this one function
I (and others) can much more easily reuse Galleys.
I suggest also exposing end_pos, but I'm not currently using that. Let
me know if I should update this PR to do so.
Thanks for the otherwise awesome tool :)
## Summary
- Ignore raw device mouse motion unless the window is focused and the
pointer is inside it
- Also handles pointers starting down and then moving into or out of the
window (drag & drop)
- Prevents global mouse motion from triggering continuous repaint loops
- Applies to both glow and wgpu backends
## Testing
- I ran the check script, nothing seemed to fail
---------
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* Closes <https://github.com/emilk/egui/issues/1284> (again)
* [x] I have followed the instructions in the PR template
Short and simple PR, just moves the updated font to the right place. I
note that the license for that font says copyright 2014, which might
need to be updated to reflect when the font was modified.
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* [x] I have followed the instructions in the PR template
`get_proc_address` was introduced in #4145, but its lifetime was
designed to be tied to the lifetime `'s` of `CreationContext`. This
means that using `get_proc_address` outside the lifetime of
`CreationContext` is undefined behavior. This contradicts the original
intent behind introducing `get_proc_address`, as this API is intended
for integration with external libraries that cannot easily guarantee
alignment with egui's lifetimes. This PR changes the type of
`get_proc_address` from a reference to an `Arc`, decoupling its lifetime
from `CreationContext` to achieve safer memory management.
Increased smart_aim `NUM_DECIMALS` from 15 to 16 to fix crash in
`best_in_range_f64`
The f64 value 0.09999999999999995, when multiplied by `scale_factor` and
rounded, becomes 16 digits (999999999999999.5 -> 1000000000000000) and
the leading 1 is clipped off by `to_decimal_string` resulting in all 0s
and triggering the debug_assert! message "Bug in smart aim code"
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* Closes <https://github.com/emilk/egui/issues/7747 >
* [x] I have followed the instructions in the PR template
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A number of separate commits to possibly easily revert some of them.
General idea: selectively update dependencies to remove transitive
dependencies and multiple versions etc. As well as updating "major" (the
one that `cargo update` doesn't update) version for some in Cargo.toml.
Rendering pipelines in `vello_cpu` wasn't obvious. Now both are used.
