Progress

Apply the progress patch to a native <progress> element to replace browser-default styling with a pill-shaped track and a themed fill that transitions smoothly. Use color for the track tone and accentColor for the filled value tone.

Props

Prop	Type	Default	Description
`color`	`ValueOrState<ThemeColor>`	`"neutral"`	Theme color tone for the track (background).
`accentColor`	`ValueOrState<ThemeColor>`	`"primary"`	Theme color tone for the filled value portion.

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.

progress

import { type PartialElement, toState, type ValueOrState } from "@domphy/core";
import { type ThemeColor, themeColor, themeSpacing } from "@domphy/theme";

/**
 * Styles a native progress bar: full-width, pill-shaped track with a themed fill,
 * including the WebKit progress-bar/value pseudo-elements and a width transition.
 *
 * @hostTag progress
 * @param props.color - Theme color tone for the track/background. Accepts a value or reactive
 *   state. Defaults to `"neutral"`.
 * @param props.accentColor - Theme color tone for the filled value. Accepts a value or reactive
 *   state. Defaults to `"primary"`.
 * @example { progress: null, value: 40, max: 100, $: [progress()] }
 */
function progress(
  props: {
    color?: ValueOrState<ThemeColor>;
    accentColor?: ValueOrState<ThemeColor>;
  } = {},
): PartialElement {
  const color = toState(props.color ?? "neutral", "color");
  const accentColor = toState(props.accentColor ?? "primary", "accentColor");

  return {
    _onInsert: (node) => {
      if (node.tagName !== "progress") {
        console.warn(`"progress" primitive patch must use progress tag`);
      }
    },
    // Track surface — shift via dataTone, paint with inherit.
    dataTone: "shift-3",
    style: {
      appearance: "none",
      width: "100%",
      height: themeSpacing(2),
      border: 0,
      borderRadius: themeSpacing(999),
      overflow: "hidden",
      backgroundColor: (listener) =>
        themeColor(listener, "inherit", color.get(listener)),
      color: (listener) => themeColor(listener, "text", color.get(listener)),
      "&::-webkit-progress-bar": {
        backgroundColor: (listener) =>
          themeColor(listener, "inherit", color.get(listener)),
        borderRadius: themeSpacing(999),
      },
      "&::-webkit-progress-value": {
        backgroundColor: (listener) =>
          themeColor(listener, "shift-9", accentColor.get(listener)),
        borderRadius: themeSpacing(999),
        transition: "width 220ms ease",
      },
    },
  };
}

export { progress };

Progress#

Props#

Progress

Props