react-best-gradient-color-picker

react-best-gradient-color-picker

• Customizable, easy to use color and gradient picker for React.js
• Simply pass in an rgba or css gradient string as value and an onChange handler
• Variety of optional tools like eye dropper, advanced color settings, and color guide
• use the useColorPicker hook for complete control over of the picker
• You can completly customize the UI by hiding the included elements and using the hook to build your own
• You can also customize preset options by passing in an array of rgba colors (see custom presets below)

Install

npm install react-best-gradient-color-picker

yarn add react-best-gradient-color-picker

Demo

See the picker in action here

Table of Contents

• Basic Example
• Props
• API
• useColorPicker Hook
• Hook Basic Example
• Hook Functions
• Hook State
• More Hook Examples
• Styling
• Legacy Options
• Roadmap
• License
• Acknowledgments

Basic Example

import React from 'react'
import ColorPicker from 'react-best-gradient-color-picker'

function MyApp() {
  const [color, setColor] = useState('rgba(255,255,255,1)');

  return <ColorPicker value={color} onChange={setColor} />
}

Props

Name	Type	Default	Description
value	string	'rgba(175, 51, 242, 1)'	The starting color
width	int	294	(optional) The width of the picker
height	int	294	(optional) The height of the picker
hideInputs	boolean	false	(optional) hide the hex and rgba inputs
hideOpacity	boolean	false	(optional) hide the opacity bar
hideHue	boolean	false	(optional) hide the hue bar
hideControls	boolean	false	(optional) hide the entire top row of various control btns
hideColorTypeBtns	boolean	false	(optional) hide the solid/gradient buttons
hidePresets	boolean	false	(optional) hide the preset color options
hideEyeDrop	boolean	false	(optional) hide (and disable the eye dropper tool
hideAdvancedSliders	boolean	false	(optional) hide the additional sliders (saturation, luminence, brightness
hideColorGuide	boolean	false	(optional) hide the color guide, a tool that shows color pairings
hideInputType	boolean	false	(optional) hide the input type selector, looking the type
hideGradientType	boolean	false	(optional) hide the linear/circular gradient type toggle (only relevant in gradient mode)
hideGradientAngle	boolean	false	(optional) hide the gradient angle input (only relevant in gradient mode with a linear gradient)
hideGradientStop	boolean	false	(optional) hide the gradient point stop input (only relevant in gradient mode)
hideGradientControls	boolean	false	(optional) hide the all gradient controls (the bar that appears below top controls when in gradient mode)
presets	array	['rgba(0,0,0,1)', ...]	(optional) pass in custom preset options ['rgba()', 'rgba()', ..]
locales	object	{ CONTROLS: { SOLID: 'Solid', GRADIENT: 'Gradient' }}	(optional) pass in custom locales

API

Name	Description
onChange	A function to update color value

useColorPicker

• Take complete control of the picker
• Get current state
• Convert between color types

Basic Example

• Initialize the hook by passing in the same color value and onChange handler

import React from 'react'
import ColorPicker, { useColorPicker } from 'react-best-gradient-color-picker'

function MyApp() {
  const [color, setColor] = useState('linear-gradient(90deg, rgba(96,93,93,1) 0%, rgba(255,255,255,1) 100%)');
  const { setSolid, setGradient } = useColorPicker(color, setColor);

  return(
    <div>
      <button onClick={setSolid}>Solid</button>
      <button onClick={setGradient}>Gradient</button>
      <ColorPicker value={color} onChange={setColor} />
    </div>
   )
}

Included Functions

Name	Arguments	Description
handleChange	value (rgba string)	Most useful for setting color value of the selectedPoint without overwriting entire gradient string. Only pass this function a single color value, not a gradient
setLinear		Change the type of gradient to linear
setRadial		Change the type of gradient to radial
setDegrees	degrees (num, 0 - 360)	Change the degrees of a linear gradient
setSolid	(optional) new solid color (rgba string)	Change the pickers color mode from gradient to solid
setGradient	(optional) new gradient (CSS gradient)	Change the pickers color mode from solid to gradient
setR	value (num, 0 - 255)	Update the red value of the color
setG	value (num, 0 - 255)	Update the green value of the color
setB	value (num, 0 - 255)	Update the blue value of the color
setA	value (num, 0 - 100)	Update the opacity (alpha) of a color
setHue	value (num, 0 - 360)	Update the hue of a color
setSaturation	value (num, 0 - 100)	Update the saturation of a color
setLightness	value (num, 0 - 100)	Update the lightness of a color
valueToHSL		Get the current value in HSL
valueToHSV		Get the current value in HSV
valueToHex		Get the current value in HEX
valueToCmyk		Get the current value in CMYK
setSelectedPoint	index of point (num)	Update which individual color of a gradient is in focus
deletePoint	index of point (num)	Delete one of the gradients colors
addPoint	position of point (num, 0 - 100)	Add a new color to the gradient
setPointLeft	value (num, 0 - 100)	Update the position (left) of the currently selected gradient color
getGradientObject		get the gradients value parsed into a key/value object (see example below)

Available State

Name	Description
selectedPoint	returns index of which color point of a gradient is currently selected
isGradient	returns which mode the picker is in, solid or gradient
gradientType	which gradient type is currently selected, linear or radial
degrees	current degrees of a radial gradient
currentLeft	the position of the selected gradient color
rgbaArr	get the current rgba values in an array
hslArr	get the current hsl values in an array

Various Customization Examples

Custom Gradient Controls

import React from 'react'
import ColorPicker, { useColorPicker } from 'react-best-gradient-color-picker'

function MyApp() {
  const [color, setColor] = useState('linear-gradient(90deg, rgba(96,93,93,1) 0%, rgba(255,255,255,1) 100%)');
  const { gradientType, setLinear, setRadial, addPoint, deletePoint, degrees, setDegrees, setPointLeft, currentLeft, selectedPoint } = useColorPicker(color, setColor);

  return(
    <div>
      <button onClick={setLinear}>Linear</button>
      <button onClick={setRadial}>Radial</button>
      {gradientType === 'linear-gradient' && <input value={degrees} onChange={(e) => setDegrees(e.target.value)} />}
      <input value={currentLeft} onChange={(e) => setPointLeft(e.target.value)} />
      <button onClick={() => addPoint(50)}>Add Color</button>
      <button onClick={() => deletePoint(selectedPoint)}>Delete Color</button>
      <ColorPicker value={color} onChange={setColor} hideControls={true} />
    </div>
   )
}

Custom RGBA Inputs

import React from 'react'
import ColorPicker, { useColorPicker } from 'react-best-gradient-color-picker'

function MyApp() {
  const [color, setColor] = useState('linear-gradient(90deg, rgba(96,93,93,1) 0%, rgba(255,255,255,1) 100%)');
  const { setR, setG, setB, setA, rgbaArr } = useColorPicker(color, setColor);

  return(
    <div>
      <input value={rgbaArr[0]} onChange={(e) => setR(e.target.value)} />
      <input value={rgbaArr[1]} onChange={(e) => setG(e.target.value)} />
      <input value={rgbaArr[2]} onChange={(e) => setB(e.target.value)} />
      <input value={rgbaArr[3]} onChange={(e) => setA(e.target.value)} />
      <ColorPicker value={color} onChange={setColor} hideInputs={true} />
    </div>
   )
}

Conversions

import React from 'react'
import ColorPicker, { useColorPicker } from 'react-best-gradient-color-picker'

function MyApp() {
  const [color, setColor] = useState('linear-gradient(90deg, rgba(96,93,93,1) 0%, rgba(255,255,255,1) 100%)');
  const { valueToHSL, valueToHSV, valueToHex, valueToCmyk, rgbaArr, hslArr } = useColorPicker(color, setColor);

  const hslString = valueToHSL();
  const hsvString = valueToHSV();
  const hexString = valueToHex();
  const cmykString = valueToCmyk();
  const rgbaArray = rgbaArr;
  const hslArray = hslArr;

  return(
    <div>
      <ColorPicker value={color} onChange={setColor} />
    </div>
   )
}

Custom Presets Example

import React from 'react'
import ColorPicker from 'react-best-gradient-color-picker'

const customPresets = [
  'rgba(34, 164, 65, 1)',
  'rgba(210, 18, 40, .5)',
  'rgba(90, 110, 232, 1)',
  'rgba(65, 89, 56, 1)',
  'rgba(98, 189, 243, 1)',
  'rgba(255, 210, 198, 1)',
  'rgba(94, 94, 94, 1)'
] //max 18 colors, you can pass in more but the array will be sliced to the first 18

function MyApp() {
  const [color, setColor] = useState('rgba(255,255,255,1');

  return <ColorPicker value={color} onChange={setColor} presets={customPresets} />
}

You may also want to provide the users recently used colors in lieu of preset options. This can be easily accomplished use the hook.

import React from 'react'
import ColorPicker, { useColorPicker } from 'react-best-gradient-color-picker'

function MyApp() {
  const [color, setColor] = useState('linear-gradient(90deg, rgba(96,93,93,1) 0%, rgba(255,255,255,1) 100%)');
  const { previousColors } = useColorPicker(color, setColor);

  return(
    <div>
      <ColorPicker value={color} onChange={setColor} presets={previousColors} />
    </div>
   )
}

Custom Locales Example

You can pass custom locales via locales prop.

import React from 'react'
import ColorPicker, { useColorPicker } from 'react-best-gradient-color-picker'

function MyApp() {
  const customLocales = {
    CONTROLS: {
      SOLID: 'Obične',
      GRADIENT: 'Gradijent',
    },
  }
  return (
    <div>
      <ColorPicker locales={customLocales} />
    </div>
  )
}

Getting Value in Object Form

The picker returns the new value as a css gradient string but you may need it parsed as an object. This can easily be accomplised by using the getGradientObject function returned by the useColorPicker hook like so:

import React from 'react'
import ColorPicker, { useColorPicker } from 'react-best-gradient-color-picker'

function MyApp() {
  const [color, setColor] = useState('linear-gradient(90deg, rgba(96,93,93,1) 0%, rgba(255,255,255,1) 100%)');
  const { getGradientObject } = useColorPicker(color, setColor);
  const gradientObject = getGradientObject();
  
  // example value
  // {
  //   "isGradient": true,
  //   "gradientType": "linear-gradient",
  //   "degrees": "40deg",
  //   "colors": [
  //       {
  //           "value": "rgba(27,107,235,1)",
  //           "left": 0
  //       },
  //       {
  //           "value": "rgba(25,245,157,1)",
  //           "left": 100
  //       }
  //     ]
  // }

  return(
    <div>
      <ColorPicker value={color} onChange={setColor} presets={previousColors} />
    </div>
   )
}

Only Gradients Example

If you would like to not allow selection of solid colors disable the color type buttons and feed in the initial value as a gradient like below:

NOTE: the same can be done in reverse to only allow selection of solid colors

import React from 'react'
import ColorPicker, { useColorPicker } from 'react-best-gradient-color-picker'

function MyApp() {
  const [color, setColor] = useState('linear-gradient(90deg, rgba(96,93,93,1) 0%, rgba(255,255,255,1) 100%)');  

  return(
    <div>
      <ColorPicker
        value={color}
        onChange={setColor}
        hideColorTypeBtns={true}
      />
    </div>
   )
}

Styling

Many of the pickers components have css classnames you can target to change styles. Below are some of the more common, others can be found using the elements inspector.

Class	Description
rbgcp-control-btn-wrapper	grey area around the buttons
rbgcp-control-icon-btn	icon buttons
rbgcp-control-btn	text buttons
rbgcp-control-btn-selected	selected buttons, icon and text
rbgcp-color-model-dropdown	dropdown to select between color modes
rbgcp-control-input	inputs on the gradient control bar, angle and stop
rbgcp-input	color value inputs, hex, rgba etc

LEGACY V1 - Manual Control - Customizing UI

This still works, although most functions are available through the useColorPicker hook, if there is something you need that is not available you could use the below methods to create your desired functionality.

The state of the picker is determined by parsing the value string. You can update props like colorType (solid/gradient), gradientType (linear/radial), gradientDegrees, hex, rgba, opacity and hue simply by updating the value you are passing into the component. Let's say you want to change the colorType from gradient to solid:

import React from 'react'
import ColorPicker from 'react-best-gradient-color-picker'

function MyApp() {
  const [color, setColor] = useState('linear-gradient(90deg, rgba(96,93,93,1) 0%, rgba(255,255,255,1) 100%)');
  
  const setSolid = () => {
    setColor('rgba(255,255,255,1)') //color could be any rgba value
  }

  return(
    <div>
      <button onClick={setSolid}>Solid</button>
      <ColorPicker value={color} onChange={setColor} />
    </div>
   )
}

The same can be done in inverse to change colorType from solid to gradient:

  const setGradient = () => {
    setColor('linear-gradient(90deg, rgba(96,93,93,1) 0%, rgba(255,255,255,1) 100%)')
  }

Example toggling gradientType

  const setLinear = () => {
    setColor('linear-gradient(90deg, rgba(96,93,93,1) 0%, rgba(255,255,255,1) 100%)')
  }
  
  const setRadial = () => {
    setColor('radial-gradient(circle, rgba(96,93,93,1) 0%, rgba(255,255,255,1) 100%)')
  }

Custom linear-gradient degrees input

import React from 'react'
import ColorPicker from 'react-best-gradient-color-picker'

function MyApp() {
  const [color, setColor] = useState('linear-gradient(90deg, rgba(96,93,93,1) 0%, rgba(255,255,255,1) 100%)');
  const degrees = parseInt(value?.split(',')[0]?.split('(')[1])
  
  const handleDegrees = (val) => {
    let num = parseInt(val)
    let nans = isNaN(num) ? 0 : num
    let min = Math.max(nans, 0)
    let max = Math.min(min, 360)
    const remaining = value.split(/,(.+)/)[1]
    setColor(`linear-gradient(${max}deg, ${remaining}`)
  }

  return(
    <div>
      <input value={degrees} onChange={(e) => handleDegrees(e.target.value)} />
      <ColorPicker value={color} onChange={setColor} />
    </div>
   )
}

Roadmap

1. enhanced mobile support
2. cross browser eye dropper issue
3. enhanced gradient parsing to allow additional gradient types

License

Code released under the MIT license.

Acknowledgments

Very special thank you to Rafael Carício for his amazing work parsing gradient strings.