Input Range

Styles a range slider with a themed track and thumb, plus hover, focus, and disabled states. Apply to an <input type="range"> element — the patch sets type: "range".

Both engines are covered: ::-webkit-slider-runnable-track / ::-webkit-slider-thumb for Chromium and Safari, ::-moz-range-track / ::-moz-range-thumb for Firefox. The host box is 6U tall so the pointer/drag target clears the WCAG 2.2 SC 2.5.8 24x24 minimum; the visible track stays 1.5U.

Props

Prop	Type	Default	Description
`color`	`ValueOrState<ThemeColor>`	`"neutral"`	Theme color tone for the slider track.
`accentColor`	`ValueOrState<ThemeColor>`	`"primary"`	Theme color tone for the thumb and focus ring.

Customization

Must see the source of patch at the bottom of each patch page to understand the structure then code it still code as html native element.

There are four levels of customization, in increasing order of effort:

Patch props. Each patch exposes a small, stable set of props—typically fewer than five. Lowest friction.
Context attributes. Use dataTone, dataSize, and dataDensity on a container to shift tone, size, or density for an entire subtree without touching individual elements.
Inline override. Native-wins merge strategy: any property set directly on the element overrides the patch value.
Create a variant. Clone a similar patch and edit it. Use this only when you need a reusable custom version.

Formulas

Unit - U = fontSize / 4 - convert final values with themeSpacing(n).

Size - n = intrinsic text lines, w = wrapping level, d = density factor:

height        = (n * 6 + 2 * d * w) * U
paddingBlock  = d * w * U
paddingInline = ceil(3 / w) * d * w * U
radius        = d * w * U

Base density d = 1.5:

U	w=0	w=1	w=2	w=3
height (`n = 1`)	6	9	12	15
paddingBlock	0	1.5	3	4.5
paddingInline	3	4.5	6	4.5
radius	0	1.5	3	4.5

Tone - K = N / 2 where N is the palette length. For N = 18, K = 9.

Role	Shift	n=0
Background	parent +/- n	0
Text	bg + K	6
Border	bg + K/2	3
Hover	bg + 2K/3	4
Selected / Focus	above +/- K/3	2-4

State shift range: K/3 <= delta <= 2K/3.

inputRange

import { type PartialElement, toState, type ValueOrState } from "@domphy/core";
import {
  type ThemeColor,
  themeColor,
  themeSize,
  themeSpacing,
} from "@domphy/theme";
import { focusRing } from "../utils/focusRing.js";

/**
 * Styles a range slider with a themed track and thumb, hover, focus and
 * disabled states. Apply to an `<input>` element of type `range` (the patch
 * sets `type: "range"`).
 *
 * @hostTag input
 * @param props.color - Optional theme color tone for the slider track (`ValueOrState<ThemeColor>`). Defaults to `"neutral"`.
 * @param props.accentColor - Optional theme color tone for the thumb and focus ring (`ValueOrState<ThemeColor>`). Defaults to `"primary"`.
 * @example { input: null, type: "range", $: [inputRange()] }
 */
function inputRange(
  props: {
    color?: ValueOrState<ThemeColor>;
    accentColor?: ValueOrState<ThemeColor>;
  } = {},
): PartialElement {
  const color = toState(props.color ?? "neutral", "color");
  const accentColor = toState(props.accentColor ?? "primary", "accentColor");

  return {
    type: "range",
    _onInsert: (node) => {
      if (node.tagName !== "input") {
        console.warn(`"inputRange" primitive patch must use input tag`);
      }
    },
    style: {
      appearance: "none",
      // Without this the UA default font (13.333px on form controls) wins and
      // every em-derived dimension below shrinks by ~17% — the 6U host box
      // measured 20px instead of 24px in Chromium.
      fontSize: (listener) => themeSize(listener, "inherit"),
      width: "100%",
      margin: 0,
      padding: 0,
      // WCAG 2.2 SC 2.5.8 Target Size (Minimum) is 24x24 CSS px; the visible
      // track stays 1.5U — only the pointer/drag box grows.
      height: themeSpacing(6),
      background: "transparent",
      cursor: "pointer",
      "&::-webkit-slider-runnable-track": {
        height: themeSpacing(1.5),
        borderRadius: themeSpacing(999),
        backgroundColor: (listener) =>
          themeColor(listener, "shift-3", color.get(listener)),
      },
      "&::-webkit-slider-thumb": {
        appearance: "none",
        width: themeSpacing(4),
        height: themeSpacing(4),
        borderRadius: themeSpacing(999),
        border: "none",
        marginTop: `calc((${themeSpacing(1.5)} - ${themeSpacing(4)}) / 2)`,
        backgroundColor: (listener) =>
          themeColor(listener, "shift-9", accentColor.get(listener)),
      },
      "&:hover:not([disabled])::-webkit-slider-thumb": {
        backgroundColor: (listener) =>
          themeColor(listener, "shift-10", accentColor.get(listener)),
      },
      // Firefox uses its own pseudo-elements; without these the slider fell
      // back to the unthemed native widget there (WebKit-only styling).
      "&::-moz-range-track": {
        height: themeSpacing(1.5),
        borderRadius: themeSpacing(999),
        backgroundColor: (listener) =>
          themeColor(listener, "shift-3", color.get(listener)),
      },
      "&::-moz-range-thumb": {
        width: themeSpacing(4),
        height: themeSpacing(4),
        borderRadius: themeSpacing(999),
        border: "none",
        backgroundColor: (listener) =>
          themeColor(listener, "shift-9", accentColor.get(listener)),
      },
      "&:hover:not([disabled])::-moz-range-thumb": {
        backgroundColor: (listener) =>
          themeColor(listener, "shift-10", accentColor.get(listener)),
      },
      borderRadius: themeSpacing(2),
      transition: "box-shadow 140ms ease",
      "&:focus-visible": {
        boxShadow: (listener) => focusRing(listener, accentColor.get(listener)),
      },
      "&[disabled]": {
        opacity: 0.7,
        cursor: "not-allowed",
      },
    },
  };
}

export { inputRange };

Input Range#

Props#

Input Range

Props