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egui/crates/egui_demo_lib/src/demo/frame_demo.rs
Antoine Beyeler bcd91f27a1 Add support for text truncation to egui::Style (#4556)
* 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>
2024-05-28 13:10:41 +02:00

75 lines
2.3 KiB
Rust

/// Shows off a table with dynamic layout
#[derive(PartialEq)]
pub struct FrameDemo {
frame: egui::Frame,
}
impl Default for FrameDemo {
fn default() -> Self {
Self {
frame: egui::Frame {
inner_margin: 12.0.into(),
outer_margin: 24.0.into(),
rounding: 14.0.into(),
shadow: egui::Shadow {
offset: [8.0, 12.0].into(),
blur: 16.0,
spread: 0.0,
color: egui::Color32::from_black_alpha(180),
},
fill: egui::Color32::from_rgba_unmultiplied(97, 0, 255, 128),
stroke: egui::Stroke::new(1.0, egui::Color32::GRAY),
},
}
}
}
impl super::Demo for FrameDemo {
fn name(&self) -> &'static str {
"▣ Frame"
}
fn show(&mut self, ctx: &egui::Context, open: &mut bool) {
egui::Window::new(self.name())
.open(open)
.resizable(false)
.show(ctx, |ui| {
use super::View as _;
self.ui(ui);
});
}
}
impl super::View for FrameDemo {
fn ui(&mut self, ui: &mut egui::Ui) {
ui.horizontal(|ui| {
ui.vertical(|ui| {
ui.add(&mut self.frame);
ui.add_space(8.0);
ui.set_max_width(ui.min_size().x);
ui.vertical_centered(|ui| egui::reset_button(ui, self, "Reset"));
});
ui.separator();
ui.vertical(|ui| {
// We want to paint a background around the outer margin of the demonstration frame, so we use another frame around it:
egui::Frame::default()
.stroke(ui.visuals().widgets.noninteractive.bg_stroke)
.rounding(ui.visuals().widgets.noninteractive.rounding)
.show(ui, |ui| {
self.frame.show(ui, |ui| {
ui.style_mut().wrap_mode = Some(egui::TextWrapMode::Extend);
ui.label(egui::RichText::new("Content").color(egui::Color32::WHITE));
});
});
});
});
ui.set_max_width(ui.min_size().x);
ui.separator();
ui.vertical_centered(|ui| ui.add(crate::egui_github_link_file!()));
}
}