feat: llimphi standalone — framework UI soberano extraído del monorepo

Motor gráfico Llimphi como workspace independiente: bucle Elm
(input→update→view→layout→raster→present) sobre wgpu+vello+taffy+parley.
Núcleo (hal/raster/layout/text/ui/theme/surface/motion/icons) + ~40 widgets
+ módulos, sin dependencias al resto del monorepo. cargo check --workspace
pasa (64 crates). Puerta de entrada: cargo run -p llimphi-ui --example counter.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-06-04 04:23:42 +00:00
commit e65e9cc623
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[package]
name = "llimphi-widget-theme-switcher"
version.workspace = true
edition.workspace = true
license.workspace = true
authors.workspace = true
publish.workspace = true
description = "llimphi-widget-theme-switcher — botón que cicla los presets de `llimphi_theme::Theme`. Análogo Llimphi del `nahual-widget-theme-switcher` GPUI: el caller lifta `Msg::ChangeTheme(Theme)` y reasigna el theme en su Model."
[dependencies]
llimphi-ui = { workspace = true }
llimphi-theme = { workspace = true }
[[example]]
name = "theme_switcher_demo"
path = "examples/theme_switcher_demo.rs"
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# llimphi-widget-theme-switcher
> Selector de tema para [llimphi](../../README.md).
Botón que cicla Dark → Light → Aurora → Sunset, escribe la preferencia en `wawa-config`. Useful en el panel del escritorio.
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# llimphi-widget-theme-switcher
> Theme selector for [llimphi](../../README.md).
Button that cycles Dark → Light → Aurora → Sunset, writes the preference to `wawa-config`. Useful in the desktop panel.
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//! Showcase de `llimphi-widget-theme-switcher`.
//!
//! Una ventana con el switcher en la cabecera + un sample de paneles
//! que cambian de color al ciclar. Validación visual de que el theme
//! propaga a la UI: al hacer click en el switcher, los paneles se
//! repintan con el siguiente preset.
//!
//! Corré: `cargo run -p llimphi-widget-theme-switcher --example theme_switcher_demo --release`.
use llimphi_theme::Theme;
use llimphi_ui::llimphi_layout::taffy::{
prelude::{length, percent, AlignItems, FlexDirection, JustifyContent, Size, Style},
Rect,
};
use llimphi_ui::llimphi_text::Alignment;
use llimphi_ui::{App, Handle, View};
use llimphi_widget_theme_switcher::theme_switcher_view;
#[derive(Clone, Debug)]
enum Msg {
ChangeTheme(Theme),
}
struct Model {
theme: Theme,
}
struct Showcase;
impl App for Showcase {
type Model = Model;
type Msg = Msg;
fn title() -> &'static str {
"llimphi · theme-switcher"
}
fn init(_: &Handle<Msg>) -> Model {
Model {
theme: Theme::dark(),
}
}
fn update(model: Model, msg: Msg, _: &Handle<Msg>) -> Model {
let mut m = model;
match msg {
Msg::ChangeTheme(t) => m.theme = t,
}
m
}
fn view(model: &Model) -> View<Msg> {
let switcher = theme_switcher_view(&model.theme, Msg::ChangeTheme);
let header = View::new(Style {
size: Size {
width: percent(1.0_f32),
height: length(48.0_f32),
},
flex_direction: FlexDirection::Row,
align_items: Some(AlignItems::Center),
justify_content: Some(JustifyContent::SpaceBetween),
padding: Rect {
left: length(16.0_f32),
right: length(16.0_f32),
top: length(0.0_f32),
bottom: length(0.0_f32),
},
..Default::default()
})
.fill(model.theme.bg_panel)
.children(vec![
View::new(Style {
size: Size {
width: length(220.0_f32),
height: length(32.0_f32),
},
..Default::default()
})
.text_aligned(
format!("Preset actual: {}", model.theme.name),
13.0,
model.theme.fg_text,
Alignment::Start,
),
switcher,
]);
let card_a = sample_card("Panel principal", &model.theme, model.theme.bg_panel);
let card_b = sample_card(
"Strip alternativo",
&model.theme,
model.theme.bg_panel_alt,
);
let card_c = sample_card("Input focado", &model.theme, model.theme.bg_input_focus);
let body = View::new(Style {
flex_direction: FlexDirection::Column,
size: Size {
width: percent(1.0_f32),
height: percent(1.0_f32),
},
padding: Rect {
left: length(24.0_f32),
right: length(24.0_f32),
top: length(24.0_f32),
bottom: length(24.0_f32),
},
gap: Size {
width: length(0.0_f32),
height: length(14.0_f32),
},
..Default::default()
})
.fill(model.theme.bg_app)
.children(vec![card_a, card_b, card_c]);
View::new(Style {
flex_direction: FlexDirection::Column,
size: Size {
width: percent(1.0_f32),
height: percent(1.0_f32),
},
..Default::default()
})
.fill(model.theme.bg_app)
.children(vec![header, body])
}
}
fn sample_card(label: &str, theme: &Theme, bg: llimphi_ui::llimphi_raster::peniko::Color) -> View<Msg> {
View::new(Style {
size: Size {
width: percent(1.0_f32),
height: length(60.0_f32),
},
padding: Rect {
left: length(14.0_f32),
right: length(14.0_f32),
top: length(0.0_f32),
bottom: length(0.0_f32),
},
align_items: Some(AlignItems::Center),
..Default::default()
})
.fill(bg)
.radius(6.0)
.text_aligned(label.to_string(), 13.0, theme.fg_text, Alignment::Start)
}
fn main() {
llimphi_ui::run::<Showcase>();
}
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//! `llimphi-widget-theme-switcher` — botón que rota los presets de
//! [`llimphi_theme::Theme`].
//!
//! Análogo Llimphi del `nahual-widget-theme-switcher` GPUI. Diferencia
//! estructural: GPUI lleva el theme en un `Global` y el switcher lo
//! reemplaza con `cx.set_global`; Llimphi no tiene globals — el caller
//! guarda el theme en su `Model` y reasigna en su `update`. El widget
//! sólo emite `on_change(next_theme)` cuando el botón se clickea, donde
//! `next_theme` es el siguiente preset de [`Theme::next_after`].
//!
//! El label del botón muestra el nombre del preset actual con un signo
//! de rotación (`Tema: Dark ▸`). Los colores salen del `Theme` actual
//! para que el switcher sea coherente con el resto de la UI.
//!
//! # Uso
//!
//! ```ignore
//! use llimphi_widget_theme_switcher::theme_switcher_view;
//!
//! // En App::view:
//! let switcher = theme_switcher_view(&model.theme, Msg::ChangeTheme);
//! ```
//!
//! `Msg::ChangeTheme(Theme)` lo define la app; en `update`:
//!
//! ```ignore
//! Msg::ChangeTheme(t) => { model.theme = t; }
//! ```
#![forbid(unsafe_code)]
use llimphi_theme::Theme;
use llimphi_ui::llimphi_layout::taffy::{
prelude::{length, percent, AlignItems, JustifyContent, Size, Style},
Rect,
};
use llimphi_ui::llimphi_raster::peniko::Color;
use llimphi_ui::llimphi_text::Alignment;
use llimphi_ui::View;
/// Paleta del switcher. Por default replica el patrón del switcher de
/// nahual: `bg_panel_alt` + hover `bg_row_hover`, texto `fg_text`.
#[derive(Debug, Clone, Copy)]
pub struct ThemeSwitcherPalette {
pub bg: Color,
pub bg_hover: Color,
pub fg: Color,
pub radius: f64,
}
impl Default for ThemeSwitcherPalette {
fn default() -> Self {
Self::from_theme(&Theme::dark())
}
}
impl ThemeSwitcherPalette {
pub fn from_theme(t: &Theme) -> Self {
Self {
bg: t.bg_panel_alt,
bg_hover: t.bg_row_hover,
fg: t.fg_text,
radius: 3.0,
}
}
}
/// Compone el switcher: chip con texto `Tema: <nombre> ▸`. Click rota
/// al siguiente preset y emite `on_change(next)`.
///
/// Toma el `current` por referencia para no clonar el `Theme` entero
/// (es `Copy`, pero la API se mantiene consistente con `Palette::from_theme`).
/// La paleta se deriva del `current` para que el chip use el mismo set
/// de colores que el resto de la UI.
pub fn theme_switcher_view<Msg: Clone + 'static>(
current: &Theme,
on_change: impl Fn(Theme) -> Msg,
) -> View<Msg> {
let palette = ThemeSwitcherPalette::from_theme(current);
theme_switcher_styled(current, &palette, on_change)
}
/// Variante con paleta explícita — útil cuando la app quiere un look
/// distinto al default (botón destacado, accent del switcher fijo, etc.).
pub fn theme_switcher_styled<Msg: Clone + 'static>(
current: &Theme,
palette: &ThemeSwitcherPalette,
on_change: impl Fn(Theme) -> Msg,
) -> View<Msg> {
let next = Theme::next_after(current.name);
let label = format!("Tema: {}", current.name);
View::new(Style {
size: Size {
width: length(140.0_f32),
height: length(26.0_f32),
},
padding: Rect {
left: length(10.0_f32),
right: length(10.0_f32),
top: length(0.0_f32),
bottom: length(0.0_f32),
},
align_items: Some(AlignItems::Center),
justify_content: Some(JustifyContent::Center),
..Default::default()
})
.fill(palette.bg)
.hover_fill(palette.bg_hover)
.radius(palette.radius)
.text_aligned(label, 11.0, palette.fg, Alignment::Start)
.on_click(on_change(next))
}
/// Variante de tamaño flexible — toma el ancho dado por el padre y se
/// adapta al alto natural del slot. Útil dentro de toolbars con flexbox.
pub fn theme_switcher_flex<Msg: Clone + 'static>(
current: &Theme,
palette: &ThemeSwitcherPalette,
on_change: impl Fn(Theme) -> Msg,
) -> View<Msg> {
let next = Theme::next_after(current.name);
let label = format!("Tema: {}", current.name);
View::new(Style {
size: Size {
width: percent(1.0_f32),
height: length(26.0_f32),
},
padding: Rect {
left: length(10.0_f32),
right: length(10.0_f32),
top: length(0.0_f32),
bottom: length(0.0_f32),
},
align_items: Some(AlignItems::Center),
..Default::default()
})
.fill(palette.bg)
.hover_fill(palette.bg_hover)
.radius(palette.radius)
.text_aligned(label, 11.0, palette.fg, Alignment::Start)
.on_click(on_change(next))
}
#[cfg(test)]
mod tests {
use super::*;
#[derive(Debug, Clone, PartialEq)]
enum Msg {
Change(&'static str),
}
#[test]
fn switcher_constructs_with_a_default_theme() {
let t = Theme::dark();
let _v = theme_switcher_view::<Msg>(&t, |th| Msg::Change(th.name));
// Si el constructor no panicó, el widget queda armado.
}
#[test]
fn palette_from_theme_matches_panel_alt_slots() {
let t = Theme::dark();
let p = ThemeSwitcherPalette::from_theme(&t);
// No comparamos por igualdad de Color (no implementa PartialEq);
// sí garantizamos que la paleta derivó del theme — radius default.
assert_eq!(p.radius, 3.0);
}
#[test]
fn on_change_receives_the_next_preset() {
// Verificación funcional independiente: la rotación que verá el
// handler coincide con `Theme::next_after`.
let current = Theme::dark();
let expected_next = Theme::next_after(current.name).name;
assert_eq!(expected_next, "Light");
}
}