Button Ghost

A transparent button with no border or background — suitable for icon actions, inline controls, and delete/close triggers.

Props

Prop	Type	Default	Description
`color`	`ValueOrState<ThemeColor>`	`"neutral"`	Text color tone.
`size`	`"small" \| "medium" \| "large"`	`"medium"`	Button size preset — scales padding and font size via the density/size tokens. Also reachable via `button({ variant: "ghost", size })`.

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.

buttonGhost

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

const PADDING_STEPS: Record<ButtonSize, number> = {
  small: 0.5,
  medium: 1,
  large: 1.5,
};

/**
 * A transparent button with no border or background — suitable for icon
 * actions, inline controls, and delete/close triggers. Apply to a `<button>`
 * element.
 *
 * @hostTag button
 * @param props.color - Text color tone. Optional `ValueOrState<ThemeColor>`, defaults to `"neutral"`.
 * @param props.size - Button size preset. Optional `"small" | "medium" | "large"`, defaults to `"medium"`.
 * @example { button: "×", $: [buttonGhost()] }
 * @example { button: { span: null, $: [icon({ name: "trash" })] }, $: [buttonGhost({ color: "error" })] }
 */
function buttonGhost(
  props: { color?: ValueOrState<ThemeColor>; size?: ButtonSize } = {},
): PartialElement {
  const color = toState(props.color ?? "neutral", "color");
  const padding = PADDING_STEPS[props.size ?? "medium"];
  const fontSize = BUTTON_SIZE_FONT[props.size ?? "medium"];

  return {
    // Native `type` on the host still wins (mergePartial: native over patch).
    type: "button",
    _onInsert: (node) => {
      if (node.tagName !== "button") {
        console.warn(`"buttonGhost" primitive patch must use button tag`);
      }
    },
    style: {
      appearance: "none",
      fontSize: (listener) => themeSize(listener, fontSize),
      paddingBlock: (listener) =>
        themeSpacing(themeDensity(listener) * padding),
      paddingInline: (listener) =>
        themeSpacing(themeDensity(listener) * padding),
      borderRadius: (listener) => themeSpacing(themeDensity(listener) * 1.5),
      display: "inline-flex",
      justifyContent: "center",
      alignItems: "center",
      gap: (listener) => themeSpacing(themeDensity(listener) * 1),
      userSelect: "none",
      cursor: "pointer",
      fontFamily: "inherit",
      lineHeight: "inherit",
      border: "none",
      background: "none",
      outline: "none",
      transition:
        "background-color 140ms ease, color 140ms ease, box-shadow 140ms ease",
      // Resting text uses the "text" alias (shift-9) — NOT the semantic-zone
      // shift-6 the patch previously used. A ghost button's label is essential
      // interactive content, and shift-6 on an edge surface measures ~2.4:1,
      // failing WCAG AA (axe color-contrast). shadcn's ghost variant likewise
      // rests at full foreground; hover/active keep the same text color and
      // differentiate via background only.
      color: (listener) => themeColor(listener, "text", color.get(listener)),
      "&:hover:not([disabled]):not([aria-busy=true])": {
        color: (listener) => themeColor(listener, "text", color.get(listener)),
        backgroundColor: (listener) =>
          themeColor(listener, "hover", color.get(listener)),
      },
      "&:active:not([disabled]):not([aria-busy=true])": {
        color: (listener) => themeColor(listener, "text", color.get(listener)),
        backgroundColor: (listener) =>
          themeColor(listener, "increase-2", color.get(listener)),
      },
      "&:focus-visible": {
        boxShadow: (listener) => focusRing(listener, color.get(listener)),
      },
      "&[disabled]": {
        opacity: 0.7,
        cursor: "not-allowed",
        color: (listener) => themeColor(listener, "border-strong", "neutral"),
      },
      "&[aria-busy=true]": {
        opacity: 0.7,
        cursor: "wait",
        pointerEvents: "none",
      },
    },
  };
}

export { buttonGhost };

Button Ghost#

Props#

Button Ghost

Props