* Part of https://github.com/emilk/egui/issues/3653
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It was surprising to me that this key wasn't sending `Event::Key` events
(only `Event::Text`), so I added a `Key` for it.
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
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When layer transforms are present, the `Response::hover_pos` function in
egui returns `transform * pos` instead of `transform.inverse() * pos`.
This is incorrect and isn't consistent with [how egui calculates other
interaction
positions](https://github.com/emilk/egui/blob/master/crates/egui/src/context.rs#L1193).
See:
https://github.com/emilk/egui/blob/master/crates/egui/src/response.rs#L471
This PR fixes this bug, changing `transform` to `transform.inverse()`.
Nothing fancy here, just a one-line change. `scripts/check.sh` runs
successfully.
Below are videos of before and after with a modified version of the web
demo. I added another entry after
https://github.com/emilk/egui/blob/master/crates/egui_demo_lib/src/demo/pan_zoom.rs#L108
with a debug rectangle drawn at the return value of `hover_pos`:
```rust
(
egui::Pos2::new(120.0, 120.0),
Box::new(|ui, _state| {
let response =
ui.allocate_response(egui::Vec2::splat(128.0), egui::Sense::hover());
ui.painter().rect_filled(
egui::Rect::from_center_size(
response.hover_pos().unwrap_or_default(),
egui::Vec2::splat(8.0),
),
egui::Rounding::ZERO,
egui::Color32::DEBUG_COLOR,
);
response
}),
),
```
Without the fix:
https://github.com/emilk/egui/assets/104604363/241cfcab-88ab-459b-8f4d-3367da3aa392
With the fix:
https://github.com/emilk/egui/assets/104604363/e52a7263-44c7-42c1-be46-1ecadc025625
This fixes a bug which sometimes would make it possible to interact with
widgets that were outside the parent clip_rect.
Interaction with a widget is done with the `interact_rect`, which is the
intersection of the widget rect and the parent clip rect. If these
rectangles are disjoint (the widget is outside the parent clip rect),
this results in a _negative rectangle_ (a rectangle with a negative
width and/or height). The distance tests for negative rectangles were
broken, causing the bug.
* This is part of solving https://github.com/emilk/egui/issues/4475
* It is also likely this would have solved
https://github.com/emilk/egui/issues/4349 (which now has another fix for
it)
### Breaking changes
`Rect::distance_to_pos`, `distance_sq_to_pos`, `signed_distance_to_pos`
now all return `f32::INFINITY` if the rectangle is negative.
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* Closes https://github.com/emilk/egui/issues/4349
This adds most of the "standard" easing functions from
https://easings.net/ to `emath::easing`, and adds helpers in `egui` for
using them.
In particular there is now `ctx.animate_bool_with_easing` and
`ctx.animate_bool_responsive`, that uses a cubic easing function.
All animations in egui now uses cubic ease-out, for a more responsive
feeling (fast at the start, slower towards the end).
You can now set custom tags on the `UiStack`. This allows you to write
code that is situationally aware at runtime. For instance, you could
decide wether or not a label should truncate its text depending on what
part of your ui it is in, without having to pass that info down via the
callstack.
These were confusing, because `set_enabled(true)` and
`set_visible(true)` did nothing.
Instead use one of:
* `ui.add_enabled`, `ui.add_enabled_ui` or `ui.disable()`
* `ui.add_visible`, `ui.add_visible_ui` or `ui.set_invisible()`
* Closes https://github.com/emilk/egui/issues/4327
* Part of https://github.com/emilk/egui/issues/4535
This should improve the auto-sizing of columns when nesting expanding
widgets (e.g. `Separator`), or centered or justified layouts.
* Closes#4534
This PR:
- Introduces `Ui::stack()`, which returns the `UiStack` structure
providing information on the current `Ui` hierarchy.
- **BREAKING**: `Ui::new()` now takes a `UiStackInfo` argument, which is
used to populate some of this `Ui`'s `UiStack`'s fields.
- **BREAKING**: `Ui::child_ui()` and `Ui::child_ui_with_id_source()` now
take an `Option<UiStackInfo>` argument, which is used to populate some
of the children `Ui`'s `UiStack`'s fields.
- New `Area::kind()` builder function, to set the `UiStackKind` value of
the `Area`'s `Ui`.
- Adds a (minimalistic) demo to egui demo (in the "Misc Demos" window).
- Adds a more thorough `test_ui_stack` test/playground demo.
TODO:
- [x] benchmarks
- [x] add example to demo
Future work:
- Add `UiStackKind` and related support for more container (e.g.
`CollapsingHeader`, etc.)
- Add a tag/property system that would allow adding arbitrary data to a
stack node. This data could then be queried by nested `Ui`s. Probably
needed for #3284.
- Add support to track columnar layouts.
---------
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* Closes https://github.com/emilk/egui/issues/1010
### In short
You can now put interactive widgets, like buttons and hyperlinks, in an
tooltip using `on_hover_ui`. If you do, the tooltip will stay open as
long as the user hovers it.
There is a new demo for this in the egui demo app (egui.rs):
### Design
Tooltips can now contain interactive widgets, such as buttons and links.
If they do, they will stay open when the user moves their pointer over
them.
Widgets that do not contain interactive widgets disappear as soon as you
no longer hover the underlying widget, just like before. This is so that
they won't annoy the user.
To ensure not all tooltips with text in them are considered interactive,
`selectable_labels` is `false` for tooltips contents by default. If you
want selectable text in tooltips, either change the `selectable_labels`
setting, or use `Label::selectable`.
```rs
ui.label("Hover me").on_hover_ui(|ui| {
ui.style_mut().interaction.selectable_labels = true;
ui.label("This text can be selected.");
ui.add(egui::Label::new("This too.").selectable(true));
});
```
### Changes
* Layers in `Order::Tooltip` can now be interacted with
By default, `Windows` can now cover already added panels. For instance:
in the egui demo app (egui.rs), windows can now cover the side-panels
and top bar.
To get the old behaviour, use
`window.constrain_to(ctx.available_rect())`.
Sometimes we need to fix the current state of the application in the
moment when you open the context menu, to save it, and to use it during
creation of context menu and response handling. Making some structs,
related with menu creating, allow us to create functions for this cases.
For example,
```rust
pub fn context_menu_custom<'a, T>(
response: &Response,
//variable for fixing state in the moment when you open context menu
state: &mut T,
//function which allow to get some king of state.
//In this case state depends on cursor position, in other cases it may depend on system time or something else
get_state: impl FnOnce(Pos2) -> T,
//set contents of menu depending on state
set_contents: impl 'a + FnOnce(&T) -> Box<dyn 'a + FnOnce(&mut Ui)>,
) -> Option<InnerResponse<()>> {
let menu_id = Id::new("__egui::context_menu");
let mut bar_state = BarState::load(&response.ctx, menu_id);
let root = &mut bar_state;
let menu_response = MenuRoot::context_interaction(response, root);
if let egui::menu::MenuResponse::Create(p, _) = &menu_response {
*state = get_state(*p);
};
let add_contents = set_contents(&state);
MenuRoot::handle_menu_response(root, menu_response);
let inner_response = bar_state.show(response, add_contents);
bar_state.store(&response.ctx, menu_id);
inner_response
}
```
The example of using such function you may see in [`my
repository`](https://github.com/sor-ca/context_menu)
It is very simple example, and is this case, the problem may be solved
without fn context_menu_custom, but in more complex situations, it may
be very useful
Related issue: https://github.com/emilk/egui/issues/4162
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---------
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
All `Area`s now have a quick fade-in animation. You can turn it off with
`Area::fade_in` or `Window::fade_in` .
The `Window` fade-out animation is now nicer: it fades all elements of
the window, not just the frame.
It can be controlled with `Window::fade_out`.
* Closes https://github.com/emilk/egui/issues/4582
User-story: there are multiple icons in a row, and the user wants them
explained. They hover over one until the tooltips appears. They then
move on to the next and don't want to wait for that tooltip again.
These functions will always show a tooltip under the widget when called,
even if the user is not hovering the widget.
This can be useful for tutorials and notification and similar.
* Closes https://github.com/emilk/egui/issues/890
If you change your code for what is contained in a menu, tooltips,
combobox etc, it is helpful if egui will recompute the size of that Area
next frame. Now it will!
The user-chosen size of a `Window` is still persisted via other means.
- Closes https://github.com/emilk/egui/issues/4060 - no longer aligned
to top
- Closes https://github.com/emilk/egui/issues/4479 - `canvas.style` is
not set anywhere anymore
- Closes https://github.com/emilk/egui/issues/2231 - same as #4060
- Closes https://github.com/emilk/egui/issues/3618 - there is now one
`<input>` per `eframe` app, and it's removed transitively by
`WebRunner::destroy -> AppRunner::drop -> TextAgent::drop`
This PR improves the text agent to make fewer assumptions about how
`egui` is embedded into the page:
- Text agent no longer sets the canvas position
- There is now a text agent for each instance of `WebRunner`
- The input element is now moved to the correct position, so the OS can
display the IME window in the correct place. Before it would typically
be outside of the viewport
The best way to test this is to build & server the web demo locally:
```
scripts/build_demo_web.sh && scripts/start_server.sh
```
Then open the EasyMark editor, and try using IME to input some emojis:
http://localhost:8888/#EasyMarkEditor
To open the emoji keyboard use:
- <kbd>win + .</kbd> on Windows
- <kbd>ctrl + cmd + space</kbd> on Mac
Tested on:
- [x] Windows
- [x] Linux
- [x] MacOS
- [x] Android
- [x] iOS
## Migration guide
The canvas no longer controls its own size/position on the page. This
means that those properties can now be controlled entirely via HTML and
CSS, and multiple separate `eframe` apps can coexist better on a single
page.
To match the old behavior, set the `canvas` width and height to 100% of
the `body` element:
```html
<html>
<body>
<canvas></canvas>
</body>
</html>
```
```css
/* remove default margins and use full viewport */
html, body {
margin: 0;
width: 100%;
height: 100%;
}
canvas {
/* match parent element size */
width: 100%;
height: 100%;
}
```
Note that there is no need to set `position: absolute`/`left: 50%;
transform: translateX(-50%)`/etc., and setting those properties may
poorly affect the sharpness of `egui`-rendered text.
Because `eframe` no longer updates the canvas style in any way, it also
means that on mobile, the canvas no longer collapses upwards to make
space for a mobile keyboard. This should be solved in other ways:
https://github.com/emilk/egui/issues/4572
* Part of https://github.com/emilk/egui/issues/4535
* Closes https://github.com/emilk/egui/issues/3974
This adds a special `sizing_pass` mode to `Ui`, in which we have no
centered or justified layouts, and everything is hidden. This is used by
`Area` to use the first frame to measure the size of its contents so
that it can then set the perfectly correct size the subsequent frames.
For menus, where buttons are justified (span the full width), this
finally the problem of auto-sizing. Before you would have to pick a
width manually, and all buttons would expand to that width. If it was
too wide, it looked weird. If it was too narrow, text would wrap. Now
all menus are exactly the width they need to be. By default menus will
wrap at `Spacing::menu_width`.
This affects all situations when you have something that should be as
small as possible, but still span the full width/height of the parent.
For instance: the `egui::Separator` widget now checks the
`ui.is_sizing_pass` flag before deciding on a size. In the sizing pass a
horizontal separator is always 0 wide, and only in subsequent passes
will it span the full width.
* Closes#4473
This PR introduce `Style::wrap_mode`, which adds support for text
truncation in addition to text wrapping. This PR also update some width
calculation of the ComboBox.
#### Core
- Add `egui::TextWrapMode` (pure enum with `Extend`, `Wrap`, `Truncate`)
- Add `Style::wrap_mode: Option<tTextWrapMode>`
- **DEPRECATED**: `Style::wrap`, use `Style::wrap_mode` instead.
- Add `Ui::wrap_mode()` to return the wrap mode to use in the current
ui. If specified in `Style`, return it. Otherwise, return
`TextWrapMode::Wrap` for vertical layout and wrapping horizontal layout,
and `TextWrapMode::Extend` otherwise.
- **DEPRECATED**: `Ui::wrap_text()`, use `Ui::wrap_mode` instead.
#### Widget
- Update the width calculation of the `ComboBox` button (_not_ its popup
menu).
- Now, `ComboBox::width()` (defaulting to `Spacing::combo_width`) is
always considered a minimum width and will extend the `Ui`, regardless
of the selected text width and wrap mode.
- Introduce `ComboBox::wrap_mode`, which overrides `Ui::wrap_mode` for
the selected text layout.
- Note: since `ComboBox` uses `ui.horizontal` internally, the default
wrap mode is always `TextWrapMode::Extend`, regardless of the caller's
`Ui`'s layout.
- The `ComboBox` button no longer extend to `ui.available_width()` with
wrapping is enabled.
- **BREAKING**: `ComboBox::wrap()` no longer has a `bool` argument and
is now a short-hand for `ComboBox::wrap_mode(TextWrapMode::Wrap)`.
- Added `ComboBox::truncate()` as short-hand for
`ComboBox::wrap_mode(TextWrapMode::Truncate)`.
- Update `Label`
- Add `Label::wrap_mode()` to specify the text wrap mode.
- **BREAKING**: `Label::wrap()` no longer has a `bool` argument and is
now a short-hand for `Label::wrap_mode(TextWrapMode::Wrap)`.
- **BREAKING**: `Label::truncate()` no longer has a `bool` argument and
is now a short-hand for `Label::wrap_mode(TextWrapMode::Truncate)`.
- Update `Button`
- Add `Button::wrap_mode()` to specify the text wrap mode.
- **BREAKING**: `Button::wrap()` no longer has a `bool` argument and is
now a short-hand for `Button::wrap_mode(TextWrapMode::Wrap)`.
- Added `Button::truncate()` as short-hand for
`Button::wrap_mode(TextWrapMode::Truncate)`.
#### Low-level
- **BREAKING**: `WidgetText::into_galley()` now takes an
`Option<TextWrapMode>` instead of a `Option<bool>` argument.
- **BREAKING**: `WidgetText::into_galley_impl(()` now takes a
`TextWrapping` argument instead of `wrap: bool` and `availalbe_width:
f32` arguments.
---------
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
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This introduces the boolean field force_current_scroll_area to
InputState which will be set when scroll_with_delta is called, causing
the ScrollArea to skip the check whether it is focused and always
consume the smooth scroll delta.
* Closes#2783
* Related to #4295
---------
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
## Summary
This PR introduces a new configuration option `reduce_texture_memory` in
`egui`.
## Changes
- Added `reduce_texture_memory` option in `egui`. When set to `true`,
`egui` will discard the loaded image data after the texture is uploaded
to the GPU, reducing memory usage. This is beneficial when handling a
large number of images and retaining the image data is unnecessary,
potentially saving substantial memory. However, this makes it impossible
to serialize the loaded images or render on non-GPU systems. Default is
`false`.
## Impact
This new configuration option gives users more control over their memory
usage, especially when dealing with a large number or large resolution
of images. It allows users to optimize their applications based on their
specific needs and constraints.
Simply adds a `hint_text_font` (any suggestions for a better name?
hint_text_style seemed misleading as it doesn't only accept `TextStyle`)
method to the TextEdit builder that allows to set the styling
(specifically, a `FontSelection`) for the hint text.
My personal use-case for this was having body-sized hint text in a
heading-sized TextEdit, but I'm sure there's more out there.
The PR shouldn't break compatibility, as it's stored as an `Option` that
defaults to the `font_id` (which was the only behaviour prior to this)
when empty.
It looked too trivial to add something to the actual demo, but I have it
locally, so let me know if I should commit that.
Ran the check script locally, had no complaints.
I wanted to disable the return key functionality on my `TextEdit`, so
that the `TextEdit` doesn't get unfocused whenever the user submits a
command onto my developer console (which is also bound to <kbd>↵
Enter</kbd>).
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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.
* closes https://github.com/emilk/egui/issues/4525
You can zoom in using ctrl/cmd + scrolling. When using a discreet scroll
wheel, the zoom factor now gets smoothed.
For integrations: just emit `egui::Event::MouseWheel` (like before).
egui will interpret that as zoom or pan.
On the way towards https://github.com/emilk/egui/issues/4401
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Inspired by:
44d65f41ac/Cargo.toml (L65)
I took the liberty of removing that comment since I *think* that I got
all "relevant" ones (showing up more than once, sort of).
Matt Keeter
Emil Ernerfeldt
Colin Cai
JustFrederik
YgorSouza
Andrew Farkas
Sven Niederberger
Antoine Beyeler
sor-ca
Jan Procházka
lucasmerlin
Varphone Wong
zaaarf
Doonv
Oscar Gustafsson