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React Color Alpha

Alpha is a subcomponent of @react-color.

Install

1npm i @uiw/react-color-alpha

Usage

1import React, { useState } from 'react';
2import { hsvaToRgbaString } from '@uiw/color-convert';
3import Alpha from '@uiw/react-color-alpha';
4
5export default function Demo() {
6  const [hsva, setHsva] = useState({ h: 0, s: 0, v: 68, a: 1 });
7  return (
8    <>
9      <Alpha
10        hsva={hsva}
11        onChange={(newAlpha) => {
12          setHsva({ ...hsva, ...newAlpha });
13        }}
14      />
15      <div style={{ background: hsvaToRgbaString(hsva), marginTop: 30, padding: 10 }}>
16        {JSON.stringify(hsva)}
17      </div>
18    </>
19  );
20}

Props

1import React from 'react';
2import { HsvaColor } from '@uiw/color-convert';
3import { Interaction } from '@uiw/react-drag-event-interactive';
4import type * as CSS from 'csstype';
5import { PointerProps } from './Pointer';
6export * from './Pointer';
7export interface AlphaProps extends Omit<React.HTMLAttributes<HTMLDivElement>, 'onChange'> {
8  prefixCls?: string;
9  /** String, Pixel value for picker width. Default `316px` */
10  width?: CSS.Properties<string | number>['width'];
11  /** String, Pixel value for picker height. Default `16px` */
12  height?: CSS.Properties<string | number>['height'];
13  /** hsva => `{ h: 0, s: 75, v: 82, a: 1 }` */
14  hsva: HsvaColor;
15  /** React Component, Custom pointer component */
16  pointer?: (props: PointerProps) => JSX.Element;
17  /** Set rounded corners. */
18  radius?: CSS.Properties<string | number>['borderRadius'];
19  /** Set the background color. */
20  background?: string;
21  /** Set the background element props. */
22  bgProps?: React.HTMLAttributes<HTMLDivElement>;
23  /** Set the interactive element props. */
24  innerProps?: React.HTMLAttributes<HTMLDivElement>;
25  pointerProps?: PointerProps;
26  /** String Enum, horizontal or vertical. Default `horizontal` */
27  direction?: 'vertical' | 'horizontal';
28  onChange?: (newAlpha: {
29      a: number;
30  }, offset: Interaction) => void;
31}
32export declare const BACKGROUND_IMG = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAMUlEQVQ4T2NkYGAQYcAP3uCTZhw1gGGYhAGBZIA/nYDCgBDAm9BGDWAAJyRCgLaBCAAgXwixzAS0pgAAAABJRU5ErkJggg==";
33declare const Alpha: React.ForwardRefExoticComponent<AlphaProps & React.RefAttributes<HTMLDivElement>>;
34export default Alpha;
35interface PointerProps extends React.HTMLAttributes<HTMLDivElement> {
36  prefixCls?: string;
37  left?: string;
38  top?: string;
39}

Contributors

As always, thanks to our amazing contributors!

Made with contributors.

License

Licensed under the MIT License.