Toggle
Keep an independent action selected or unselected.
use blinc_cn as cn;
use blinc_core::reactive::{Signal, computed};
use blinc_layout::{binding::IntoReactive, prelude::*};
pub fn toggle_demo(confirmed: Signal<bool>, disabled: Signal<bool>) -> Div {
let checked = confirmed;
div()
.class("demo-stack")
.class("demo-stack--center")
.child(cn::toggle(checked).label("Bold").disabled(disabled))
.child(
bound_text(computed(move |g| {
if g.get(checked).unwrap_or(false) {
"Bold text enabled"
} else {
"Regular text"
}
.into()
}))
.class("demo-caption"),
)
}
fn bound_text(value: impl IntoReactive<String>) -> Text {
Text::bound(value.into_reactive())
}
@layer components {
.blinc-toggle {
flex-direction: row;
align-items: center;
justify-content: center;
gap: 6px;
height: 36px;
min-width: 36px;
padding: 0 12px;
font-size: var(--text-sm);
font-weight: 500;
border: 1px solid transparent;
border-radius: var(--radius-default);
background: transparent;
color: var(--text-primary);
cursor: pointer;
transition:
background-color var(--duration-fast) var(--ease-state),
border-color var(--duration-fast) var(--ease-state),
transform var(--duration-faster) var(--ease-state);
}
.blinc-toggle:hover:not(:disabled) {
background: color-mix(in srgb, var(--text-primary) 5%, transparent);
}
.blinc-toggle:active:not(:disabled) {
background: color-mix(in srgb, var(--text-primary) 10%, transparent);
transform: scale(0.97);
}
.blinc-toggle[data-state="on"] {
background: color-mix(in srgb, var(--text-primary) 10%, var(--background));
}
.blinc-toggle[data-state="on"]:hover:not(:disabled) {
background: color-mix(in srgb, var(--text-primary) 14%, var(--background));
}
.blinc-toggle:disabled {
opacity: 0.5;
cursor: not-allowed;
}
.blinc-toggle[data-variant="outline"] {
border-color: var(--border-secondary);
}
.blinc-toggle[data-size="sm"] {
height: 32px;
min-width: 32px;
padding: 0 8px;
font-size: var(--text-xs);
border-radius: var(--radius-sm);
}
.blinc-toggle[data-size="lg"] {
height: 40px;
min-width: 40px;
padding: 0 16px;
font-size: var(--text-base);
}
.blinc-toggle > svg {
flex-shrink: 0;
}
.cn-toggle {
font-family: var(--font-sans);
}
.cn-toggle:focus-visible {
outline: 2px solid var(--focus-ring);
outline-offset: 2px;
}
.cn-toggle[data-state="on"] {
background: var(--cn-toggle-selected-bg, color-mix(in srgb, var(--text-primary) 10%, var(--background))) !important;
color: var(--cn-toggle-selected-color, var(--text-primary)) !important;
}
.cn-toggle[data-state="on"]:hover:not(:disabled) {
background: var(--cn-toggle-selected-hover-bg, color-mix(in srgb, var(--text-primary) 14%, var(--background))) !important;
}
}
Usage and properties
Keep an independent action selected or unselected. Apply CSS after the component layer to restyle the documented parts.
Use the installation guide to add blinc_cn and its component stylesheet. Create the fixture bindings once, and return the demo from your UI builder. Values marked Bound accept Signal/Computed sources where the API supports them; structural options configure the component at construction.
| Property | Type | Update model | This example |
|---|---|---|---|
value | Signal<bool> | Bound | values.confirmed |
disabled | bool or IntoReactive<bool> | Bound | values.disabled |
Keyboard and interaction
Tab reaches the control; Enter or Space activates it. :focus-visible marks keyboard focus.
Customizing it
Add application CSS after the default component layer. These selectors are the restyling surface for this component:
.cn-toggle
Theme and component variables: --cn-toggle-selected-bg, --cn-toggle-selected-hover-bg, --cn-toggle-selected-color, --primary, --text-primary, --text-secondary, --surface, --border, --radius-default, --duration-fast, --ease-state.
Built-in themes
The Live theme control installs Blinc's own theme bundles, including their colours, focus rings, corner shapes and motion tokens.
pub fn theme_bundle_for(name: &str) -> blinc_theme::ThemeBundle {
match name {
"restrained" => blinc_theme::RestrainedTheme::bundle(),
"expressive" => blinc_theme::ExpressiveTheme::bundle(),
_ => blinc_theme::HybridTheme::bundle(),
}
.with_css(blinc_cn::cn_styles::CN_STYLES)
}Download the default widget and component stylesheets. Sample assets and licenses are available in the asset guide.
Documentation
From the canonical component guide.
A button that stays pressed: a formatting toggle in a toolbar, or a filter.
let bold = ctx.use_signal(false);
toggle(bold)
.label("B")
.on_change(|on| println!("bold: {on}"))
// An icon, with or without a label
toggle(bold).icon(to_svg(icons::BOLD, 16.0))
// Outline variant: a hairline in both states
toggle(bold).label("B").variant(ToggleVariant::Outline)
// Sizes: Small (32px), Medium (36px), Large (40px)
toggle(bold).label("B").size(ToggleSize::Small)
toggle(bold).label("B").disabled(locked) // a bool, Signal or Computed
Styling
A toggle is one element carrying data-state="on" or "off" (and a
checked attribute while on), data-variant, data-size and disabled.
Its look is the .blinc-toggle rules of the layout stylesheet: transparent
when off, a faint wash of the text colour when on, a
lighter wash on hover, and a slight shrink while pressed, all eased by a
transition. Sizes and variants are attribute selectors, so your own rules
can use them the same way:
@layer components {
.my-toggle[data-state="on"] {
background: #16a34a !important;
color: white !important;
}
}
.my-toggle[data-size="lg"] { min-width: 48px; }
toggle(bold).class("my-toggle")
Platforms and version
The component API is available in Blinc 0.6.0. The Live example runs in a dedicated worker and requires a compatible GPU surface. Preview and Code remain available when Live cannot start. The canvas has a descriptive label; a full screen-reader DOM mirror is not provided. The gallery integration is based on revision e2e55c24e078.
Recordings and live demos use the default Hybrid theme with bundled Noto Sans. The recording uses a 560 × 320 logical viewport at twice that resolution. Live follows its container and actual display density. Source base revision · Exact build source · Artifact versions and checksums · Font license.