Slint Kit Documentation

Choices and values

KitRangeSlider

Two-thumb slider for a controlled range.

Two-thumb slider for a controlled range.
Native screenshot of the same example, rendered with Skia.

Project lower-position, upper-position and their labels from a validated range. Handle callbacks with RangeThumb.lower or .upper to preserve thumb identity.

Each thumb has keyboard focus and emits typed navigation steps. The controller enforces endpoint order and restores the range on cancellation.

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Complete example

This complete Slint file is a visual composition used to produce the screenshot above. Internal strings without a label property retain the kit’s default language; system dialogs follow the host platform. Projected state and callbacks requesting a decision need host wiring; the standalone fixture does not supply that controller. Set up the Rust project, then see the typed controller application for working editing, validation and selection.

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

export component Example inherits Window {
    title: "KitRangeSlider 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: "Range Slider"; color: root.theme.text-primary; font-size: 20px * root.theme.text-scale; font-weight: 600; }
        Text { text: "Price range · $20–$75"; color: root.theme.text-primary; font-size: 14px * root.theme.text-scale; wrap: word-wrap; } KitRangeSlider { theme: root.theme; label: "Price range"; lower-position: 0.2; upper-position: 0.75; lower-label: "$20"; upper-label: "$75"; }
        if root.status != "": Text { text: root.status; color: root.theme.text-secondary; font-size: 12px * root.theme.text-scale; wrap: word-wrap; }
    }
}

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Public API

Inherits Rectangle. The declarations below come from the component source. Parent properties remain available; see the controller guide for state management.

Properties

Name Type Direction
theme KitTheme in
access FieldAccess in
lower-position float in
upper-position float in
label string in
lower-label string in
upper-label string in

Types and variants

Names below use Slint syntax. Shared Rust domain types live in slint_kit; presentation enums come from the Rust types generated by Slint.

Type Declaration
enum FieldAccess editable, read-only, disabled
enum NavigationStep next, previous, first, last, page-next, page-previous
enum RangeThumb lower, upper

Callbacks

Functions