Hover Card

A delayed floating card associated with a pointer or keyboard trigger.

Like every gpui-base primitive, Hover Card supplies behavior and semantic structure without imposing a product visual language. Apply GPUI styles and compose the exported parts to match your design system.

#Example

The single native Cargo entrypoint selects this primitive from the shared showcase implementation. The same showcase is compiled once for the WASM preview above.

cargo run -p gpui-base --example components -- hover-card

#Import

use gpui_kit::base::{HoverCard};

#Anatomy and API

The example composes HoverCard. GPUI’s standard styling and event traits provide presentation; these base types provide the interaction structure.

The authoritative module is components/hover_card.rs. Native and browser previews compile this same file.

#State and events

Pointer or focus entry schedules opening and exit schedules dismissal.

Keep controlled state on the parent render type or in a GPUI entity. Update it in callbacks and call cx.notify(); do not recreate persistent entities during every render.

#Complete Rust example

The complete implementation used by the runnable showcase is embedded directly from Rust source:

use super::*;

impl BaseShowcase {
    pub(in super::super) fn hover_card(&self) -> impl IntoElement {
        HoverCard::new("example-hover-card")
            .trigger(
                div()
                    .id("hover-trigger")
                    .px_3()
                    .py_1()
                    .text_xs()
                    .text_color(super::example_rgb(0x171717))
                    .underline()
                    .child("Hover over gpui-base"),
            )
            .content(|_, _, _| {
                div()
                    .id("hover-content")
                    .w(px(210.))
                    .p_2()
                    .text_xs()
                    .bg(super::example_rgb(0xffffff))
                    .border_1()
                    .border_color(super::example_rgb(0xd4d4d4))
                    .child(
                        div()
                            .flex()
                            .items_center()
                            .gap_2()
                            .child(
                                div()
                                    .size_7()
                                    .flex()
                                    .items_center()
                                    .justify_center()
                                    .border_1()
                                    .border_color(super::example_rgb(0x171717))
                                    .text_sm()
                                    .child("G"),
                            )
                            .child(
                                div().text_sm().child("gpui-base").child(
                                    div()
                                        .text_sm()
                                        .text_color(super::example_rgb(0x737373))
                                        .child("@gpui-base"),
                                ),
                            ),
                    )
                    .child(
                        div()
                            .mt_2()
                            .text_sm()
                            .text_color(super::example_rgb(0x737373))
                            .child("Unstyled primitives for GPUI."),
                    )
            })
    }
}

The command above supplies application initialization, window creation, and shared BaseShowcase state.

#Accessibility

Expose it from keyboard focus and duplicate essential information outside hover-only content.

#Notes

Use stable element IDs where accepted. Verify focus, hover, active, selected, disabled, reduced-motion, and high-contrast appearances in the consuming design system.