Input Group Start for Slint

KitInputGroupStart · Slint Kit 0.3.0

Horizontal slot for content before an editor.

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 the native editor and change its text; the prefix or suffix stays outside the editable value.

ui/app.slint

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

export component App inherits Window {
    title: "KitInputGroupStart example";
    preferred-width: 420px;
    preferred-height: 180px;
    max-width: 100000px;
    max-height: 100000px;
    background: root.theme.canvas;
    in-out property <KitTheme> theme: KitThemes.light;
    in-out property <string> draft-0: "129.95";
    VerticalLayout {
        padding: 24px; spacing: 16px; alignment: start;
        Text { text: "Input Group Start"; color: root.theme.text-primary; font-size: 20px * root.theme.text-scale; font-weight: 600; }
        KitInputGroup {
            theme: root.theme; focused: editor.has-focus;
            HorizontalLayout {
                spacing: 8px;
                KitInputGroupStart { KitInputGroupText { theme: root.theme; text: "USD"; } }
                Rectangle {
                    horizontal-stretch: 1; min-width: 0px; clip: true;
                    viewport := Flickable {
                        interactive: false;
                        content-width: max(self.width, editor.preferred-width + 2px);
                        content-height: self.height;
                        editor := TextInput {
                            width: viewport.content-width; height: viewport.height;
                            single-line: true; input-type: InputType.decimal;
                            accessible-label: "Amount";
                            font-size: 14px * root.theme.text-scale;
                            horizontal-alignment: left; vertical-alignment: center;
                            text <=> root.draft-0; color: root.theme.text-primary;
                            cursor-position-changed(position) => {
                                if (position.x + viewport.content-x < 0px) {
                                    viewport.content-x = -position.x;
                                } else if (position.x + 2px + viewport.content-x > viewport.width) {
                                    viewport.content-x = viewport.width - position.x - 2px;
                                }
                            }
                        }
                    }
                }

            }
        }
    }
}

src/main.rs

// SPDX-License-Identifier: GPL-3.0-or-later
slint::include_modules!();

fn main() -> Result<(), slint::PlatformError> {
    let app = App::new()?;
    slint_kit::init_form_validation!(self, app);
    app.run()
}

Cargo.toml and build.rs

Cargo.toml

[package]
name = "slint-kit-input-group-start-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]

build.rs

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

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

Compose it next to the actual editor inside KitInputGroup, with an icon or KitInputGroupText. Let the editor consume the remaining space.

It aligns children to the start and does not stretch horizontally. It adds no border, padding or focus target.

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 { KitInputGroup, KitInputGroupStart, KitInputGroupText, KitTheme, KitThemes } from "@kit/kit.slint";

export component Example inherits Window {
    title: "KitInputGroupStart example";
    preferred-width: 420px;
    preferred-height: 180px;
    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: "Input Group Start"; color: root.theme.text-primary; font-size: 20px * root.theme.text-scale; font-weight: 600; }
        KitInputGroup { theme: root.theme; HorizontalLayout { spacing: 12px; KitInputGroupStart { KitInputGroupText { theme: root.theme; text: "USD"; } } TextInput { font-size: 14px * root.theme.text-scale; vertical-alignment: center; text: "129.95"; color: root.theme.text-primary; }  } }
        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 HorizontalLayout.