1.2.0 • Published 1 year ago

@slidy/react v1.2.0

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MIT
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Last release
1 year ago

@slidy/react

Simple, configurable & reusable carousel component built with React based on @slidy/core.

Try the demo.

Getting started

The package is available via npm:

npm i @slidy/react

Usage

The most simple way to get started is to use named import of <Slidy /> component:

import { Slidy } from '@slidy/react';
import '@slidy/react/dist/slidy.css';

const slides = [
    {
        id: 1,
        width: 800,
        height: 1200,
        src: 'static/img/some-image.webp',
    },
];

export default () => {
    return <Slidy slides={slides} />;
};

All props are optional. The only property to get started is slides - an array of objects with image related data.

You will also have to import css styles:

import '@slidy/react/dist/slidy.css';

Core Component

Core is a wrapper component for @slidy/core available via named import. It is best to use to build up the custom component for specific needs or when just the basic functionality is needed.

import { Core } from '@slidy/react';

export default () => {
    return <Core />;
};

Core Component API

PropertyDefaultTypeDescription
animationundefinedAnimationFuncCustom slide animation.
axis"x""x" or "y"The scroll direction.
clamp0numberClamps sliding index as {clamp} - {index} + {clamp}
className""stringPasses the class to the node.
duration450numberSlide transitions duration value.
easingundefined(t: number => number)Inertion scroll easing behaviour.
gravity1.2numberScroll inertia value.
indent0numberCustom scroll indent value, calculates as gap * indent.
index0numberThe index of the initial slide.
setIndexundefinedReact.Dispatch<React.SetStateAction<number>>Set's index of a current slide.
pluginsundefinedReturnType<PluginFunc>[]Plugins to operate with the slidy instance and its options directly.
loopfalsebooleanMakes the slideshow continious.
sensity5numberDefines the sliding sensity as the number of pixels required to drag.
snapundefined"start" or "center" or "end" or "deck"Enforces the scroll stop positions.
tagolstringThe HTML tag name to render.
onResizeundefined(event: CustomEvent<{ ROE: ResizeObserverEntry[] }>) => voidListen to the core event resize to fire.
onMountundefined(event: CustomEvent<Options>) => voidListen to the core event mount to fire.
onMoveundefined(event: CustomEvent<{ index: number; position: number }>) => voidListen to the core event move to fire.
onIndexundefined(event: CustomEvent<{ index: number }>) => voidListen to the core event index to fire.
onKeysundefined(event: CustomEvent<string>) => voidListen to the core event keys to fire.
onUpdateundefined(event: CustomEvent<Options>) => voidListen to the core event update to fire.
onDestroyundefined(event: CustomEvent<HTMLElement>) => voidListen to the core event destroy to fire.

For TypeScript users there is the SlidyCoreOptions interface available via named import.

Slidy Component

<Slidy /> component uses <Core /> internally and provides more features expected from carousel.

Slidy Component API

The <Slidy /> component interface extends the <Core />. There are a list of additional options available:

PropertyDefaultTypeDescription
arrowstrueboolean or () => JSXElementRenders the arrow button controls for accessible slide navigation.
arrowundefined() => JSXElementRenders the arrow.
childrenundefined(item: Slide) => JSXElementRenders each slide.
overlayundefined() => JSXElementRenders the overlay.
backgroundfalsebooleanSets background-image instead of <img /> elements to display slides.
classNamesSlidyStylesSlidyStylesDefaultThe class names object used over the component.
getImgSrcitem => item.srcfunctionThe slide's src attribute getter.
getThumbSrcitem => item.srcfunctionThe thumbnail's src attribute getter.
i18ni18nDefaultsI18NDictThe i18n localization dictionary.
navigationfalsebooleanRenders the navigation controls for pagination-like slide navigation.
groups0numberControls the number of items displayed per viewport.
progressfalsebooleanRenders the progress bar.
slides[]Slides[]An array of objects with image metadata.
thumbnailfalseboolean or () => JSXElementRenders the thumbnail navigation panel.
onResizeundefined(event: CustomEvent<{ ROE: ResizeObserverEntry[] }>) => voidListen to the core event resize to fire.
onMountundefined(event: CustomEvent<Options>) => voidListen to the core event mount to fire.
onMoveundefined(event: CustomEvent<{ index: number; position: number }>) => voidListen to the core event move to fire.
onIndexundefined(event: CustomEvent<{ index: number }>) => voidListen to the core event index to fire.
onKeysundefined(event: CustomEvent<string>) => voidListen to the core event keys to fire.
onUpdateundefined(event: CustomEvent<Options>) => voidListen to the core event update to fire.
onDestroyundefined(event: CustomEvent<HTMLElement>) => voidListen to the core event destroy to fire.
pluginsundefinedReturnType<PluginFunc>[]Plugins to operate with the slidy instance and its options directly.

By default component works with images. Image object should contain width and height attributes to prevent layout shifts and alt for accessibility.

Styling

Extending/Overriding classes

To extend default component styles use classNames property. Default classes are available via object, that can be extended or overridden:

import { Slidy, classNames } from '@slidy/react';
import '@slidy/react/dist/slidy.css';

export default () => {
    return (
        <Slidy
            classNames={{
                root: `${classNames.root} custom-class`,
                ...classNames,
            }}
        />
    );
};

The classNames consist of { target: className } pairs:

TargetDefault classDescription
arrowslidy-arrowArrow controls.
autoplayslidy-autoplayAutoplay control.
counterslidy-counterSlide progress counter.
imgslidy-imgSlide image node.
navslidy-navSlide navigation panel.
nav-itemslidy-nav-itemNavigtion panel item.
overlayslidy-overlaySlides overlay node.
progressslidy-progressSlide progress bar.
rootslidyComponent's root node.
slideslidy-slideSlide item node.
slidesslidy-slidesSlides list node.
thumbnailslidy-thumbnailThumbnail item.
thumbnailslidy-thumbnailsThumbnails bar.

Custom Properties API

For easier style customization Slidy provides a set of predefined custom properties to inherit:

List of available public custom properties:

PropertyDefaultTypeDescription
--slidy-arrow-bg#4e4e4ebf<color>The arrow control background color.
--slidy-arrow-bg-hover#4e4e4e54<color>The arrow control hover background color.
--slidy-arrow-icon-colorcurrentColor<color>The arrow control icon fill color.
--slidy-arrow-size24px<length>The arrow controls size.
--slidy-autoplay-control-size2.25em<length>The autoplay control size.
--slidy-autoplay-indicator-accentlightpinkThe autoplay control indicator ring color.
--slidy-counter-bg#4e4e4ebf<color>The counter's background color.
--slidy-focus-ring-color#c9c9c9e6<color>Focus ring color for all focusable elements.
--slidy-height100%<length>The height of the component's node.
--slidy-nav-item-colorwhite<color>The navigation elements color.
--slidy-nav-item-radius50%<length>The navigation elements border radius.
--slidy-nav-item-size16px<length>The navigation elements size.
--slidy-progress-thumb-color#c44f61<color>The progress bar active track color.
--slidy-progress-track-color#96969680<color>The progress bar track color.
--slidy-progress-track-size5px<length>The progress bar height.
--slidy-slide-aspect-ratiounset<int/int>Defines the slide aspect-ratio.
--slidy-slide-bg-colordarkgray<color>The placeholder background color for loading images.
--slidy-slide-gap1rem<length>The gap between items in carousel.
--slidy-slide-height100%<length>The carousel items height.
--slidy-slide-object-fitcover-The carousel items (images) resize behaviour.
--slidy-slide-radius1rem<length>The slide's border radius value.
--slidy-slide-widthauto<length>The carousel items width.
--slidy-thumbnail-radius0.5rem<length>The thumbnail border-radius value.
--slidy-thumbnail-size50px<length>The thumbnail panel size.
--slidy-width100%<length>The width of the component's node.

Inherited custom properties

All supported custom properties starts with --slidy-. For example, to recolor navigation controls, let the component inherit a --slidy-nav-item-color custom property from any parent:

.parent {
    --slidy-navigation-color: red;
}
export default () => {
    return (
        <div class="parent">
            <Slidy />
        </div>
    );
};

Or just pass a class with a set of custom properties:

.some-class {
    --slidy-navigation-color: red;
    --slidy-nav-item-size: 1rem;
}
import { Slidy, classNames } from '@slidy/react';
import '@slidy/react/dist/slidy.css';

export default () => {
    return (
        <Slidy
            classNames={{
                root: `${classNames.root} .some-class`,
                ...classNames,
            }}
        />
    );
};

Slots

arrow

Customizes the content of the default arrow controls.

arrows

Provides a slot for custom arrow buttons.

If the nodes are <button /> and the data-step attribute is present, the event listener is not needed. Just provide the values -1 and 1 for data-step on custom buttons.

Also, there are grid-area is present in the layout for this custom controls: prev-slide and next-slide respectively.

button:first-of-type {
    grid-area: prev-slide;
}

button:last-of-type {
    grid-area: next-slide;
}
export default () => {
    return (
        <Slidy
            arrows={() => (
                <>
                    <button data-step="-1"> Show the previous slide </button>
                    <button data-step="1"> Show the next slide </button>
                </>
            )}
        />
    );
};

default

Usually the default markup is not enough. The default slot solves this problem. To use custom slide markup slot expose each slides prop item item argument.

export default () => {
    return (
        <Slidy>
            {(item) => (
                <figure>
                    <img src={item.src} alt={item.figcaption} />
                    <figcaption>{item.figcaption}</figcaption>
                </figure>
            )}
        </Slidy>
    );
};

overlay

Slot to display content overlaid content. It covers the slides area and can be customized by overriding the .slidy-overlay. For example, it is used to display the counter.

export default () => {
    return <Slidy overlay={() => <button> Share </button>} />;
};

i18n

To modify all texts used in the component use pass the dictionary as i18n prop. For the sake of accessibility, it is recommended translating defaults:

KeyDefaultEvent detail
carousel"carousel"aria-label of a root element.
counter"%s of %s"aria-label of each slide as {slide number} of {slide length}
first"Go to the first slide"aria-label of the first item at the navigation.
last"Go to the last slide"aria-label of the last item at the navigation.
next"Go to the next slide"aria-label of the arrow control.
play"Start autoplay"aria-label of the autoplay control.
prev"Return back to previous slide"aria-label of the arrow control.
slide"Slide"aria-roledescription of each slide item.
slideN"Go to the slide %s"aria-label of pagination of each slide item.
stop"Stop autoplay"aria-label of the autoplay control.

Recipes

External controls

It is possible to control the navigation of the Slidy instance from the parent component via binding.

There are two variables available to control the component externally: index and position. Declare the variables to hold the values and bind them to the instance for the carousel control.

import { Slidy } from '@slidy/react';
import { useState } from 'react';

import '@slidy/react/dist/slidy.css';

export default () => {
    const [index, setIndex] = useState(0);

    return (
        <>
            <Slidy slides={slides} index={index} setIndex={setIndex} />
            <button onClick={() => setIndex((prev) => prev + 1)}>Next slide</button>
        </>
    );
};

Possible issues

  • Slides should not have absolute positioning, otherwise the core script won't get correct dimentions;
  • Using the background option usually is not recommended. In case you need to use it, specify the slide sizes with custom properties: width and height, or just aspect-ratio.

License

Slidy is distributed under the MIT license