@emmyclothing/react-smart-scroller

React-smart-scroller is a library that allows you to create highly customizable horizontal or vertical scroller in easy way.

You can modify scrollbar track just like you want, adding some styles to it, and change look of scrollbar thumb just simply passing styled JSX Element.

Define your own spacing or columns per scroller width simply passing props.

Features

• Full responsiveness
• Every child is resized dependent on view cols
• Highly customizable track
• Possibility of passing own thumb (own component)
• Vertical scroll
• Spacing between columns
• Draggable content
• Well typed (Typescript)
• Server Side Rendering friendly
• Horizontal Slider with arrows and dots

Live demo

Install

yarn add react-smart-scroller or npm install --save react-smart-scroller

Props

Property	Type	Description
numCols	number	Default: undefined. Number of columns per container width. If 1, width of each child is 100%. If not provided, column has childs width.
style	React.CssProperties	Default: undefined. Custom styles applied to wrapper.
spacing	number	Default: 0. Space in pixels between elements.
trackProps	React.CssProperties	Default: undefined. CSS styles to original track.
thumb	JSX.Element	Default: rectangle. Element that if provided overrides default rectangle.
vertical	boolean	Default: false. Defines direction of scrollbar - horizontal by default. If height of ReactSmartScroller is not defined it will automatically resize to 100% and scroll will not be visible.
draggable	boolean	Default: false. Allows to scroll by dragging content.
pagination	boolean	Default: false. Renders Slider with children, arrowRight, arrowLeft and dots (number of dots same as children length)
startAt	{  startIndex: number  center?: boolean }	Default: undefined. Defines start position of scroller (index of element)
paginationConfig	{   infinite?: boolean,   unactiveDotsColor?: string,   activeDotColor?: string,   transitionTime?: number,   minOffsetToChangeSlide?: number,   draggable?: boolean, withScroll?: boolean }	Default: undefined. infinite is optional boolean that allows user to scroll to first element from lsat after clicking next and in opposite way uncativeDotsColor is optional string that defines unactive color of dots, default: gray activeDotColor is optional string that defines active color of dot, default: green transitionTime is optional number that sets transition time between slides Default: 1s minOffsetToChangeSlide is optional number that defines minimal offset needed to change slide in pixels Default: 150px draggable is optional boolean that enables switching slides by dragging them Default: false withScroll is optional boolean that enables -> for horizontal scroll pagination and for pagination scrollable inner wrapper renderNextToEachOther is optional boolean that enables to render children next to each other
renderPagination	({   selectedDot: number,   childrenCount: number,   onNext(): void,   onPrev(): void,   onDotClick(index: number): void }) => JSX.Element	Default: undefined. Replaces original pagination, first element is arrowLeft and last element is arrowRight, elements in between are 'dots' selectedDot is an index of selectedDot childrenCount number of children onNext function that triggers next slide onPrev function that triggers previous slide onDotClick is a function that requires index of clicked dot, triggers transition to selected slide

Usage

Basic

Let's create our first component

import React from 'react'
import { ReactSmartScroller } from 'react-smart-scroller'

const renderImages = () => {
    const images = [
        'https://cdn.pixabay.com/photo/2019/06/02/00/46/chapel-4245437__340.jpg',
        'https://cdn.pixabay.com/photo/2017/08/22/22/36/cinque-terre-2670762__340.jpg',
        'https://cdn.pixabay.com/photo/2016/08/01/20/34/girl-1562091__340.jpg',
        'https://cdn.pixabay.com/photo/2013/09/26/23/23/glitter-powder-186829__340.jpg',
        'https://cdn.pixabay.com/photo/2019/04/11/09/50/wave-4119274__340.jpg'
    ]

    return images.map((image, index) => (
        <img
            key={index}
            src={image}
            style={{
                width: '100%',
                height: 300,
                objectFit: 'cover'
            }}
        />
    ))
}

export const Slider = () => (
    <ReactSmartScroller>
        {renderImages()}
    </ReactSmartScroller>
)

This is what you'll see in your browser:

numCols

export const Slider = () => (
    <ReactSmartScroller numCols={3}>
        {renderImages()}
    </ReactSmartScroller>
)

spacing

export const Slider = () => (
    <ReactSmartScroller spacing={24}>
        {renderImages()}
    </ReactSmartScroller>
)

trackProps

export const Slider = () => (
    <ReactSmartScroller
        trackProps={{
            height: 25
        }}
    >
        {renderImages()}
    </ReactSmartScroller>
)

thumb

export const Slider = () => (
    <ReactSmartScroller
        thumb={
            <div
                style={{
                    width: 20,
                    height: 20,
                    borderRadius: '50%',
                    backgroundColor: 'black'
                }}
            />
        }
    >
        {renderImages()}
    </ReactSmartScroller>
)

vertical

export const Slider = () => (
    <div
        style={{
            width: 500,
            height: 600
        }}
    >
        <ReactSmartScroller vertical>
            {renderImages()}
        </ReactSmartScroller>
    </div>
)

draggable

export const Slider = () => (
    <ReactSmartScroller draggable>
        {renderImages()}
    </ReactSmartScroller>
)

pagination

export const Slider = () => (
    <ReactSmartScroller pagination>
        {renderImages()}
    </ReactSmartScroller>
)

renderPagination

const renderDots = (onDotClick: (index: number) => void, selectedDot: number) => images.map((value, index) => {
    const backgroundColor = selectedDot === index
        ? 'black'
        : 'gray'

    return (
        <Dot
            key={index}
            onClick={() => onDotClick(index)}
        >
            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
                <path fill={backgroundColor} d="M144 268.4V358c0 6.9 4.5 14 11.4 14H184v52c0 13.3 10.7 24 24 24s24-10.7 24-24v-52h49v52c0 7.5 3.4 14.2 8.8 18.6 3.9 3.4 9.1 5.4 14.7 5.4h.5c13.3 0 24-10.7 24-24v-52h27.6c7 0 11.4-7.1 11.4-13.9V192H144v76.4zM408 176c-13.3 0-24 10.7-24 24v96c0 13.3 10.7 24 24 24s24-10.7 24-24v-96c0-13.3-10.7-24-24-24zM104 176c-13.3 0-24 10.7-24 24v96c0 13.3 10.7 24 24 24s24-10.7 24-24v-96c0-13.3-10.7-24-24-24z"/>
                <g>
                    <path fill={backgroundColor} d="M311.2 89.1l18.5-21.9c.4-.5-.2-1.6-1.3-2.5-1.1-.8-2.4-1-2.7-.4l-19.2 22.8c-13.6-5.4-30.2-8.8-50.6-8.8-20.5-.1-37.2 3.2-50.8 8.5l-19-22.4c-.4-.5-1.6-.4-2.7.4s-1.7 1.8-1.3 2.5l18.3 21.6c-48.2 20.9-55.4 72.2-56.4 87.2h223.6c-.9-15.1-8-65.7-56.4-87zm-104.4 49.8c-7.4 0-13.5-6-13.5-13.3 0-7.3 6-13.3 13.5-13.3 7.4 0 13.5 6 13.5 13.3 0 7.3-6 13.3-13.5 13.3zm98.4 0c-7.4 0-13.5-6-13.5-13.3 0-7.3 6-13.3 13.5-13.3 7.4 0 13.5 6 13.5 13.3 0 7.3-6.1 13.3-13.5 13.3z"/>
                </g>
            </svg>
        </Dot>
    )
})

const renderPagination = ({ onNext, onPrev, onDotClick, selectedDot }: RenderPaginationProps) => {
    return (
        <Wrapper>
            <LeftArrow
                src={arrowLeft}
                onClick={onPrev}
            />
            {renderDots(onDotClick, selectedDot)}
            <RightArrow
                src={arrowRight}
                onClick={onNext}
            />
        </Wrapper>
    )
}

export const Slider = () => (
    <ReactSmartScroller
        pagination
        renderPagination={renderPagination}
    >
        {renderImages()}
    </ReactSmartScroller>
)

paginationConfig

infinite

export const Slider = () => (
    <ReactSmartScroller
        pagination
        paginationConfig={{
            infinite: true
        }}
    >
        {renderImages()}
    </ReactSmartScroller>
)

draggable

export const Slider = () => (
    <ReactSmartScroller
        pagination
        paginationConfig={{
            draggable: true
        }}
    >
        {renderImages()}
    </ReactSmartScroller>
)

transitionTime

export const Slider = () => (
    <ReactSmartScroller
        pagination
        paginationConfig={{
            transitionTime: 0.25
        }}
    >
        {renderImages()}
    </ReactSmartScroller>
)

minOffsetToChangeSlide

export const Slider = () => (
    <ReactSmartScroller
        pagination
        paginationConfig={{
            minOffsetToChangeSlide: 25
        }}
    >
        {renderImages()}
    </ReactSmartScroller>
)

unactiveDotsColor

export const Slider = () => (
    <ReactSmartScroller
        pagination
        paginationConfig={{
            unactiveDotsColor: 'gray'
        }}
    >
        {renderImages()}
    </ReactSmartScroller>
)

activeDotsColor

export const Slider = () => (
    <ReactSmartScroller
        pagination
        paginationConfig={{
            activeDotColor: 'red'
        }}
    >
        {renderImages()}
    </ReactSmartScroller>
)