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React Grid Gallery

Justified image gallery component for React inspired by Google Photos and based upon React Images.

📣 Maintainers wanted 📣

As react-grid-gallery continues to gain popularity and provide value to many users (around half a million downloads from NPM as of August 2020) it requires maintainers to at least take care of issues and pull requsts. If you're getting value from using this component or if you're just interested in becoming a maintainer, please let me know.

Note:

As of the release of v0.5.4 (2019-03-10) I will no longer be actively adding features and maintaining react-grid-gallery. My online behavioral experiment platform Psychstudio consumes all of my time and I am no longer capable of giving react-grid-gallery the attention it needs. A big thanks to everyone who has contributed over the last 5 years and thanks to everyone who has downloaded react-grid-gallery (hopefully it has been useful to you).

Live Demo & Examples

https://benhowell.github.io/react-grid-gallery/

Installation

Using npm:

npm install --save react-grid-gallery

Quick (and dirty) Start

import React from 'react';
import { render } from 'react-dom';
import Gallery from 'react-grid-gallery';

const IMAGES =
[{
        src: "https://c2.staticflickr.com/9/8817/28973449265_07e3aa5d2e_b.jpg",
        thumbnail: "https://c2.staticflickr.com/9/8817/28973449265_07e3aa5d2e_n.jpg",
        thumbnailWidth: 320,
        thumbnailHeight: 174,
        isSelected: true,
        caption: "After Rain (Jeshu John - designerspics.com)"
},
{
        src: "https://c2.staticflickr.com/9/8356/28897120681_3b2c0f43e0_b.jpg",
        thumbnail: "https://c2.staticflickr.com/9/8356/28897120681_3b2c0f43e0_n.jpg",
        thumbnailWidth: 320,
        thumbnailHeight: 212,
        tags: [{value: "Ocean", title: "Ocean"}, {value: "People", title: "People"}],
        caption: "Boats (Jeshu John - designerspics.com)"
},

{
        src: "https://c4.staticflickr.com/9/8887/28897124891_98c4fdd82b_b.jpg",
        thumbnail: "https://c4.staticflickr.com/9/8887/28897124891_98c4fdd82b_n.jpg",
        thumbnailWidth: 320,
        thumbnailHeight: 212
}]

render(
        <Gallery images={IMAGES}/>,
        document.getElementById('example-0')
);

Image Options

Property	Type	Default	Description
src	string	undefined	Required. A string referring to any valid image resource (file, url, etc).
thumbnail	string	undefined	Required. A string referring to any valid image resource (file, url, etc).
thumbnailWidth	number	undefined	Required. Width of the thumbnail image.
thumbnailHeight	number	undefined	Required. Height of the thumbnail image.
nano	string:base64	undefined	Optional. Thumbnail Base64 image will be injected to background under the main image. This provides a base64, 4x4 generated image whilst the image is beong loaded.
alt	string	""	Optional. Image alt attribute.
tags	array	undefined	Optional. An array of objects containing tag attributes (value, title and key if value is element). e.g. `{value: "foo", title: "bar"}` or `{value: <a href={tag.url}>{tag.name}</a>, title: tag.title, key: tag.key}`
isSelected	bool	undefined	Optional. The selected state of the image.
caption	string\|element	undefined	Optional. Image caption.
srcSet	array	undefined	Optional. Array of srcSets for lightbox.
customOverlay	element	undefined	Optional. A custom element to be rendered as a thumbnail overlay on hover.
thumbnailCaption	string\|element	undefined	Optional. A thumbnail caption shown below thumbnail.
orientation	number	undefined	Optional. Orientation of the image. Many newer digital cameras (both dSLR and Point & Shoot digicams) have a built-in orientation sensor. The output of this sensor is used to set the EXIF orientation flag in the image file's metatdata to reflect the positioning of the camera with respect to the ground (See EXIF Orientation Page for more info).

Gallery Options

Property	Type	Default	Description
images	array	undefined	Required. An array of objects containing image properties (see Image Options above).
id	string	"ReactGridGallery"	Optional. `id` attribute for `<Gallery>` tag. This prop may be useful for those who wish to discriminate between multiple galleries.
enableImageSelection	bool	true	Optional. Allow images to be selectable. Setting this option to `false` whilst supplying images with `isSelected: true` will result in those images being permanently selected.
onSelectImage	func	undefined	Optional. Function to execute when an image is selected. Allows access to image object using `this` (See Programmers notes for more info about implicit `this`). Optional args: index (index of selected image in images array), image (the selected image). This function is only executable when `enableImageSelection: true`.
rowHeight	number	180	Optional. The height of each row in the gallery.
maxRows	number	undefined	Optional. The maximum number of rows to show in the gallery.
margin	number	2	Optional. The margin around each image in the gallery.
enableLightbox	bool	true	Optional. Enable lightbox display of full size image when thumbnail clicked.
onClickThumbnail	func	openLightbox	Optional. Function to execute when gallery thumbnail clicked. Allows access to image object using `this` (See Programmers notes for more info about implicit `this`). Optional args: index (index of selected image in images array), event (the click event). Overrides openLightbox.
lightboxWillOpen	func	undefined	Optional. Function to be called before opening lightbox. Allows access to gallery object using `this` (See Programmers notes for more info about implicit `this`). Optional arg: index (index of selected image in images array).
lightboxWillClose	func	undefined	Optional. Function to be called before closing lightbox. Allows access to gallery object using `this` (See Programmers notes for more info about implicit `this`).
tagStyle	object	tagStyle	Optional. Style to pass to tag elements. Overrides internal tag style.
tileViewportStyle	func	tileViewportStyle	Optional. Function to style the image tile viewport. Allows access to image object using `this` (See Programmers notes for more info about implicit `this`). Overrides internal tileViewportStyle function.
thumbnailStyle	func	thumbnailStyle	Optional. Function to style the image thumbnail. Allows access to image object using `this` (See Programmers notes for more info about implicit `this`). Overrides internal thumbnailStyle function.
thumbnailImageComponent	React component	undefined	Optional. Substitute in a React component that would get passed `imageProps` (the props that would have been passed to the `<img>` tag) and `item` (the original item in `images`) to be used to render thumbnails; useful for lazy loading.

Lightbox Options

NOTE: these options are passed inside the Gallery tag.

e.g.

<Gallery images={IMAGES} backdropClosesModal={true}/>

Property	Type	Default	Description
backdropClosesModal	bool	false	Optional. Allow users to exit the lightbox by clicking the backdrop.
currentImage	number	0	Optional. The index of the image to display initially (only relevant when used in conjunction with `isOpen: true` property).
preloadNextImage	bool	true	Optional. Based on the direction the user is navigating, preload the next available image.
customControls	array	undefined	Optional. An array of elements to display as custom controls on the top of lightbox.
enableKeyboardInput	bool	true	Optional. Supports keyboard input - `esc`, `arrow left`, and `arrow right`.
imageCountSeparator	string	' of '	Optional. Customize separator in the image count.
isOpen	bool	false	Optional. Whether or not the lightbox is displayed when gallery first rendered (can be used in conjunction with `currentImage` property, otherwise the first image will be diplayed).
showCloseButton	bool	true	Optional. Display a close "X" button in top right corner.
showImageCount	bool	true	Optional. Display image index, e.g., "3 of 20".
onClickImage	func	onClickImage	Optional. Function to execute when lightbox image clicked. Overrides internal implementation of onClickImage.
onClickPrev	func	onClickPrev	Optional. Function to execute when lightbox left arrow clicked. Overrides internal implementation of onClickPrev.
onClickNext	func	onClickNext	Optional. Function to execute when lightbox right arrow clicked. Overrides internal implementation of onClickNext.
currentImageWillChange	func	undefined	Optional. Function to execute before lightbox image change. Useful for tracking current image shown in lightbox. Allows access to gallery object using `this` (See Programmers notes for more info about implicit `this`).
showLightboxThumbnails	bool	false	Optional. Display thumbnails beneath the Lightbox image.
onClickLightboxThumbnail	func	gotoImage	Optional. Function to execute when lightbox thumbnail clicked. Overrides internal function: gotoImage.
lightboxWidth	number	1024	Optional. Maximum width of the lightbox carousel; defaults to 1024px.
lightBoxProps	object	undefined	Optional. Object to pass props directly to LightBox.

General Notes

react-grid-gallery is built for modern browsers and therefore IE support is limited to IE 11 and newer.
As the inspiration for this component comes from Google Photos, very small thumbnails may not be the most aesthetically pleasing due to the border size applied when selected. A sensible rowHeight default of 180px has been chosen, but rowHeights down to 100px are still reasonable.
Gallery width is determined by the containing element. Therefore your containing element must have a width (%, em, px, whatever) before the gallery is loaded!
Image Options: thumbnail can point to the same resource as src, bearing in mind the resultant data size of the gallery and page load cost. Thumbnails of whatever size will be scaled to match rowHeight.

Programmers Notes

User defined functions that allow access to this via Function.prototype.call() do not require you to declare or pass this as a parameter. this will be defined at the time the function is called.

e.g.

// somewhere in your code...
function myTileViewportStyleFn() {
  if (this.props.item.isSelected)
    return {
           // something stylish...
            };
}

<Gallery images={IMAGES} tileViewportStyle={myTileViewportStyleFn}/>


// internally, within the react-grid-gallery component it will be called like so:
myTileViewportStyleFn.call(this); // this now refers to the image to be styled

If you don't know your thumbnailWidth and thumbnailHeight values, you can find these out using any number of javascript hacks, bearing in mind the load penalty associated with these methods.

Contributing

All contributions to react-grid-gallery are very welcome. Feature requests, issue reports and pull requests are greatly appreciated. Please follow the contribution guidelines

License

React Grid Gallery is free to use for personal and commercial projects under the MIT License. Attribution is not required, but appreciated.

Acknowledgements

Visual design inspired by Google Photos.
Thumbnail viewport implementation inspired by GPlusGallery by Florian Maul.
Backend lightbox functionality via React Images by jossmac.
The following gallery functions were obtained from the React Images example demo: closeLightbox, gotoNext, gotoPrevious, handleClickImage, openLightbox.
cust0dian for critical bug fixes in PR 6 and PR 7.
ValYouW for lightboxWillOpen and lightBoxWillClose functionality PR 20 and customOverlay option: PR 22.
danalloway for theme pass-through prop PR 27
SimeonC for update thumbnails when maxRows changes PR 35 and resize on scrollbar presence change PR 40
jakub-tucek for thumbnailCaption functionality PR 42
mis94 for EXIF image rotation functionality PR 67
forforf for contentWindow check PR 77
ScottMRafferty for preloadNextImage not propagating to Lightbox fix PR 78
Approximator for currentImageWillChange (Function to execute before lightbox image change) PR 97.
Vadimuz for nano image props and functionality PR 101.
pxpeterxu for adding functionality to inject a custom thumbnail image component (for lazy-loading) PR 104.
lryta for fixing crash when this.props.images.length - 1 < this.state.currentImage PR #111.
jimishf for lightBoxProps option to assign any prop directly to lightbox PR #121.
Demo stock photos:

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