Buttons and actions

Pressable for Slint

KitPressable · Slint Kit 0.3.1

Action primitive that coordinates pointer, keyboard and focus for custom buttons.

Run preview

Try the component

Download the complete project, extract it and run cargo run --locked in its folder. Rust 1.92+; Slint Kit 0.3.0 from crates.io. You can also copy the four files below.

Click Add to collection: Rust handles the command and updates the action count.

ui/app.slint

export { KitFormValidation, HtmlInputKind, NumberInputFormat, KitInputConstraints, KitValidationResult, KitValidityState } from "@kit/kit.slint";
// SPDX-License-Identifier: GPL-3.0-or-later
import { KitPressable, KitTheme, KitThemes } from "@kit/kit.slint";

export enum DemoAction { add-to-collection }

export component App inherits Window {
    title: "KitPressable example";
    preferred-width: 360px;
    preferred-height: 160px;
    max-width: 100000px;
    max-height: 100000px;
    background: root.theme.canvas;
    in-out property <KitTheme> theme: KitThemes.light;
    in property <string> status: "Choose an action.";
    callback action-requested(DemoAction);
    VerticalLayout {
        padding: 24px; spacing: 16px; alignment: start;
        Text { text: "Pressable"; color: root.theme.text-primary; font-size: 20px * root.theme.text-scale; font-weight: 600; }
        KitPressable { theme: root.theme; preferred-width: content.preferred-width + 32px; min-width: self.preferred-width; accessible-name: "Add to collection"; activated => { root.action-requested(DemoAction.add-to-collection); } content := Text { text: "Add to collection"; color: root.theme.text-primary; font-size: 14px * root.theme.text-scale; horizontal-alignment: center; vertical-alignment: center; } }
        Text { text: root.status; color: root.theme.text-secondary; wrap: word-wrap; }
    }
}

src/main.rs

// SPDX-License-Identifier: GPL-3.0-or-later
use slint::ComponentHandle;
use std::cell::Cell;
slint::include_modules!();

fn main() -> Result<(), slint::PlatformError> {
    let app = App::new()?;
    slint_kit::init_form_validation!(self, app);
    let count = Cell::new(0_u32);
    let weak = app.as_weak();
    app.on_action_requested(move |action| {
        if let Some(app) = weak.upgrade() {
            let next = count.get().checked_add(1).expect("action count capacity");
            count.set(next);
            let label = match action {
                DemoAction::AddToCollection => "Add to collection",
            };
            app.set_status(format!("{label} handled by Rust ({next})").into());
        }
    });
    app.run()
}

[package]
name = "slint-kit-pressable-example"
version = "0.1.0"
edition = "2024"
rust-version = "1.92"
license = "GPL-3.0-or-later"
publish = false

[dependencies]
slint-kit = "=0.3.0"
slint = { version = "=1.18.1", default-features = false, features = ["std", "compat-1-18", "backend-winit", "renderer-skia", "accessibility"] }

[build-dependencies]
slint-kit-build = "=0.3.0"

[workspace]

fn main() {
    slint_kit_build::compile("ui/app.slint").expect("compile component example");
}

Files: Cargo.toml · build.rs · ui/app.slint · src/main.rs

Place non-interactive content inside, supply an accessible-name, and size preferred-width from that content. Choose ControlWidth.fill when the action should fill its row.

activated reports an accepted action; disabled and busy prevent activation. Enter activates on press, Space on release, and cancel-press() cancels an armed interaction.

View source ↗

Visual composition

The file below produces the screenshot. For controller-driven components, it shows the displayed state without supplying the Rust wiring. Create a project.

Show the screenshot source

// SPDX-License-Identifier: GPL-3.0-or-later
import { KitPressable, KitTheme, KitThemes } from "@kit/kit.slint";

export component Example inherits Window {
    title: "KitPressable example";
    preferred-width: 360px;
    preferred-height: 160px;
    max-width: 100000px;
    max-height: 100000px;
    background: root.theme.canvas;
    in-out property <KitTheme> theme: KitThemes.light;
    in-out property <string> status;
    VerticalLayout {
        padding: 24px; spacing: 16px; alignment: start;
        Text { text: "Pressable"; color: root.theme.text-primary; font-size: 20px * root.theme.text-scale; font-weight: 600; }
        KitPressable { theme: root.theme; accessible-name: "Add to collection"; activated => { root.status = "Added to collection"; } Text { text: "Add to collection"; color: root.theme.text-primary; horizontal-alignment: center; vertical-alignment: center; } }
        if root.status != "": Text { text: root.status; color: root.theme.text-secondary; font-size: 12px * root.theme.text-scale; wrap: word-wrap; }
    }
}

Download this example

Public API

Inherits Rectangle.

Properties

Types and variants

Callbacks

• activated()
• activation-started()
• key-event(event: KeyEvent) → EventResult
• focus-observed(bool)

Functions

• cancel-press()
• take-focus()

See also

• Button
• Icon Button