# React EyeDrop ![](coverage/badge-branches.svg) ![](coverage/badge-functions.svg) ![](coverage/badge-lines.svg) ![](coverage/badge-statements.svg) > A highly customizable, fully typed & tested color eye-dropper for your React project. ### ***With flexibility in mind, let your users eye drop anything in your app within a minute.***
React Component or React Hook, you have both at your disposal.

A example project is included for basic usage of both Component & Hook. ![](readme_header.jpg) ###### Credits to [Sharon](https://unsplash.com/photos/iMdsjoiftZo) for such splendid taste in color. ## Installation Yarn: ``` yarn add react-eyedrop ``` NPM: ``` npm install --save react-eyedrop ``` ## API Reference ##### Table of contents * React Component * **[onChange](#api-onChange)**
* **[wrapperClasses](#api-wrapperClasses)**
* **[buttonClasses](#api-buttonClasses)**
* **[customComponent](#api-customComponent)**
* **[customProps](#api-customProps)**
* **[colorsPassThrough](#api-colorsPassThrough)**
* **[disabled](#api-disabled)**
* **[once](#api-once)**
* **[pickRadius](#api-pickRadius)**
* **[cursorActive](#api-cursorActive)**
* **[cursorInactive](#api-cursorInactive)**
* **[onInit](#api-onInit)**
* **[onPickStart](#api-onPickStart)**
* **[onPickEnd](#api-onPickEnd)**
* React Hook * **[Usage](#hook-usage)** # **React Component** ### **onChange** ###### `required` ###### Expects `function` ###### Returns an object: ###### Available properties` { rgb: string, hex: string, customProps: object } ` ###### *This returns the picked color data and the user's passed in data object, see customProps for usage.* *Example:* ``` function onChange({ rgb, hex }) { /* Do stuff */ } ``` ### **wrapperClasses** ###### Expects `string` *Example:* ``` /* or even */ ``` ### **buttonClasses** ###### Expects `string` *Example:* ``` /* or even */ ``` ### **customComponent** ###### Expects `React Node` ###### *Use your own component for your EyeDropping business.* ###### *Use the `onClick` prop which gets passed down.* *Example:* ``` const Button = ({ onClick }) => ``` ### **customProps** ###### Expects `object` ###### Requires customComponent to be set ###### *User can pass in their own data to the customComponent, the data can then be retrieved along with the color values in the onChange handler.* *Example:* ``` const onChange = ({ rgb, hex, customProps }) => { const { data1, data2, } = customProps } ``` ### **colorsPassThrough** ###### Expects `string` ###### *Provides access to the picked color value object { rgb, hex } for the eyedropper component.* ###### *Name provided here will be the name of the color object* *Example:* ``` const Button = ({ onClick, pixelColors }) => ``` ### **disabled** ###### Expects `boolean` ###### *Internal property provided by the eyedropper component for passing down to the customComponent. It gives control disabling the button element while color picking is active* *Example:* ``` const Button = ({ onClick, disabled }) => ``` ### **once** ###### Expects `boolean` ###### Defaults to `true` ###### *Decide if EyeDropping should stop after having pressed once. Dynamically changing this property during runtime will remove event listener & set cursorInactive. (if `false` -> `true` during runtime)* *Example:* ``` /* or */ ``` ### **pickRadius** ###### Expects `number` ###### Range `0-450` ###### *Size of the pick radius. The final value will be the average sum of all the pixels within the radius.* ###### *radius = 1 <=> 3 x 3 blocks <=> 9 pixels* ###### *radius = 2 <=> 5 x 5 blocks <=> 25 pixels* ###### *radius = 3 <=> 7 x 7 blocks <=> 49 pixels* *Example:* ``` ``` ### **cursorActive** ###### Expects `string` ###### Defaults to `copy` ###### *Decide what CSS cursor to use when actively EyeDropping.* ###### [Link to CSS Cursors](https://www.w3schools.com/csSref/pr_class_cursor.asp) *Example:* ``` ``` ### **cursorInactive** ###### Expects `string` ###### Defaults to `auto` ###### *Decide what CSS cursor to revert back to once finished with EyeDropping business.* ###### [Link to CSS Cursors](https://www.w3schools.com/csSref/pr_class_cursor.asp) *Example:* ``` ``` ### **onInit** ###### Expects `function` ###### *Callback for componentDidMount* *Example:* ``` function getPeanut() { console.log('Mmm... Definately overrated.') } /* Will be called when component is mounted */ ``` ### **onPickStart** ###### Expects `function` ###### *Callback for when you start Eyedropping* *Example:* ``` function getBananas() { console.log('Ahhh... Much better.') } /* Will be called when starting to EyeDrop */ ``` ### **onPickEnd** ###### Expects `function` ###### *Callback for when you stop EyeDropping* *Example:* ``` function buyBurritos() { console.log('Yum!') } /* Will be called when you finish EyeDropping */ ``` # React Hook ### **Usage** `colors` will contain whatever is clicked once `pickColor` is called.
Call `cancelPickColor` to stop picking colors. :zany_face: *Example:* ``` import { useEyeDrop } from 'react-eyedrop' const [colors, pickColor, cancelPickColor] = useEyeDrop({ once: boolean, pickRadius: number, cursorActive: CSS Cursors, cursorInactive: CSS Cursors, onPickStart?: () => void onPickEnd?: () => void onPickCancel?: () => void }) ``` **[Link to CSS Cursors](https://www.w3schools.com/csSref/pr_class_cursor.asp)** ## Development setup Run the unit tests locally: ``` npm i /* or */ yarn /* and then */ npm run test ``` ## Release History * 5.4.2 * Fixed bug with color picking HTML elements * Now functions with React 18 * 5.4.1 * Added onPickStart, onPickEnd and onPickCancel to hook * 5.3.0 * Now handles any HTML element with background property * 5.2.1 * Added `onPickEnd` property * 5.1.3 * Pretty serious bugfix * 5.0.4 * Rewritten in TypeScript * Introduced useEyeDrop React hook * 4.2.0 * Fixed fundamental issue with color picking * Now handles cross-origin images * 4.1.3 * Bug fix related to color picking from the correct target * 4.1.2 * No longer inline styling * 4.1.1 * Added Unit test Coverage badges in README * 4.1.0 * 100% Unit Test Coverage * 4.0.0 * Removed property `onPickEnd` since same functionality can be achieved with handleChange * 3.4.2 * Now supports color-picking images presented through `img` tags on the DOM * 3.0.0 * Updated `pickRadius` feature to work with different units; radius & pixel. * 2.1.2 * Fixed a typo in documentation * 2.1.1 * Added `pickRadius` feature * 2.0.1 * Updated documentation * 2.0.0 * Changed prop name from `buttonComponent` to `customComponent` * 1.0.0 * Initial release ## Meta Manjodh "Mango" Singh – [manjodheriksingh@gmail.com](mailto:manjodheriksingh@gmail.com) Distributed under the MIT license. See [license](https://opensource.org/licenses/MIT) for more information. [https://github.com/jodhman/](https://github.com/jodhman/) ## Contributing 1. Fork it () 2. Create your feature branch (`git checkout -b feature/fooBar`) 3. Commit your changes (`git commit -am 'Add some fooBar'`) 4. Push to the branch (`git push origin feature/fooBar`) 5. Create a new Pull Request

	Stars	Issues	Version	Updated	Created
@mapbox/react-colorpickr			10.3.0	a year ago	7 years ago
react-eyedrop	22	3	5.5.1	a day ago	5 years ago
smart-react-components			1.12.11	3 years ago	4 years ago

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