chinwagsocial/app/javascript/mastodon/components/media_gallery.js

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import React from 'react';
import ImmutablePropTypes from 'react-immutable-proptypes';
import PropTypes from 'prop-types';
import { is } from 'immutable';
import IconButton from './icon_button';
import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
import classNames from 'classnames';
import { autoPlayGif, cropImages, displayMedia, useBlurhash } from '../initial_state';
import { debounce } from 'lodash';
import Blurhash from 'mastodon/components/blurhash';
const messages = defineMessages({
toggle_visible: { id: 'media_gallery.toggle_visible', defaultMessage: '{number, plural, one {Hide image} other {Hide images}}' },
});
class Item extends React.PureComponent {
static propTypes = {
attachment: ImmutablePropTypes.map.isRequired,
standalone: PropTypes.bool,
index: PropTypes.number.isRequired,
size: PropTypes.number.isRequired,
onClick: PropTypes.func.isRequired,
displayWidth: PropTypes.number,
visible: PropTypes.bool.isRequired,
autoplay: PropTypes.bool,
};
static defaultProps = {
standalone: false,
index: 0,
size: 1,
};
state = {
loaded: false,
};
handleMouseEnter = (e) => {
if (this.hoverToPlay()) {
e.target.play();
}
}
handleMouseLeave = (e) => {
if (this.hoverToPlay()) {
e.target.pause();
e.target.currentTime = 0;
}
}
getAutoPlay() {
return this.props.autoplay || autoPlayGif;
}
hoverToPlay () {
const { attachment } = this.props;
return !this.getAutoPlay() && attachment.get('type') === 'gifv';
}
handleClick = (e) => {
const { index, onClick } = this.props;
if (e.button === 0 && !(e.ctrlKey || e.metaKey)) {
if (this.hoverToPlay()) {
e.target.pause();
e.target.currentTime = 0;
}
e.preventDefault();
onClick(index);
}
e.stopPropagation();
}
handleImageLoad = () => {
this.setState({ loaded: true });
}
render () {
const { attachment, index, size, standalone, displayWidth, visible } = this.props;
let width = 50;
let height = 100;
let top = 'auto';
let left = 'auto';
let bottom = 'auto';
let right = 'auto';
if (size === 1) {
width = 100;
}
if (size === 4 || (size === 3 && index > 0)) {
height = 50;
}
if (size === 2) {
if (index === 0) {
right = '2px';
} else {
left = '2px';
}
} else if (size === 3) {
if (index === 0) {
right = '2px';
} else if (index > 0) {
left = '2px';
}
if (index === 1) {
bottom = '2px';
} else if (index > 1) {
top = '2px';
}
} else if (size === 4) {
if (index === 0 || index === 2) {
right = '2px';
}
if (index === 1 || index === 3) {
left = '2px';
}
if (index < 2) {
bottom = '2px';
} else {
top = '2px';
}
}
let thumbnail = '';
if (attachment.get('type') === 'unknown') {
return (
<div className={classNames('media-gallery__item', { standalone })} key={attachment.get('id')} style={{ left: left, top: top, right: right, bottom: bottom, width: `${width}%`, height: `${height}%` }}>
<a className='media-gallery__item-thumbnail' href={attachment.get('remote_url') || attachment.get('url')} style={{ cursor: 'pointer' }} title={attachment.get('description')} target='_blank' rel='noopener noreferrer'>
<Blurhash
hash={attachment.get('blurhash')}
className='media-gallery__preview'
dummy={!useBlurhash}
/>
</a>
</div>
);
} else if (attachment.get('type') === 'image') {
const previewUrl = attachment.get('preview_url');
const previewWidth = attachment.getIn(['meta', 'small', 'width']);
const originalUrl = attachment.get('url');
const originalWidth = attachment.getIn(['meta', 'original', 'width']);
const hasSize = typeof originalWidth === 'number' && typeof previewWidth === 'number';
const srcSet = hasSize ? `${originalUrl} ${originalWidth}w, ${previewUrl} ${previewWidth}w` : null;
const sizes = hasSize && (displayWidth > 0) ? `${displayWidth * (width / 100)}px` : null;
const focusX = attachment.getIn(['meta', 'focus', 'x']) || 0;
const focusY = attachment.getIn(['meta', 'focus', 'y']) || 0;
const x = ((focusX / 2) + .5) * 100;
const y = ((focusY / -2) + .5) * 100;
thumbnail = (
<a
className='media-gallery__item-thumbnail'
href={attachment.get('remote_url') || originalUrl}
onClick={this.handleClick}
target='_blank'
rel='noopener noreferrer'
>
<img
src={previewUrl}
srcSet={srcSet}
sizes={sizes}
alt={attachment.get('description')}
title={attachment.get('description')}
style={{ objectPosition: `${x}% ${y}%` }}
onLoad={this.handleImageLoad}
/>
</a>
);
} else if (attachment.get('type') === 'gifv') {
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const autoPlay = this.getAutoPlay();
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thumbnail = (
<div className={classNames('media-gallery__gifv', { autoplay: autoPlay })}>
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<video
className='media-gallery__item-gifv-thumbnail'
aria-label={attachment.get('description')}
title={attachment.get('description')}
role='application'
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src={attachment.get('url')}
onClick={this.handleClick}
onMouseEnter={this.handleMouseEnter}
onMouseLeave={this.handleMouseLeave}
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autoPlay={autoPlay}
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playsInline
loop
muted
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/>
<span className='media-gallery__gifv__label'>GIF</span>
</div>
);
}
return (
<div className={classNames('media-gallery__item', { standalone })} key={attachment.get('id')} style={{ left: left, top: top, right: right, bottom: bottom, width: `${width}%`, height: `${height}%` }}>
<Blurhash
hash={attachment.get('blurhash')}
dummy={!useBlurhash}
className={classNames('media-gallery__preview', {
'media-gallery__preview--hidden': visible && this.state.loaded,
})}
/>
{visible && thumbnail}
</div>
);
}
}
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export default @injectIntl
class MediaGallery extends React.PureComponent {
static propTypes = {
sensitive: PropTypes.bool,
standalone: PropTypes.bool,
media: ImmutablePropTypes.list.isRequired,
size: PropTypes.object,
height: PropTypes.number.isRequired,
onOpenMedia: PropTypes.func.isRequired,
intl: PropTypes.object.isRequired,
defaultWidth: PropTypes.number,
cacheWidth: PropTypes.func,
visible: PropTypes.bool,
autoplay: PropTypes.bool,
onToggleVisibility: PropTypes.func,
};
static defaultProps = {
standalone: false,
};
state = {
visible: this.props.visible !== undefined ? this.props.visible : (displayMedia !== 'hide_all' && !this.props.sensitive || displayMedia === 'show_all'),
width: this.props.defaultWidth,
};
componentDidMount () {
window.addEventListener('resize', this.handleResize, { passive: true });
}
componentWillUnmount () {
window.removeEventListener('resize', this.handleResize);
}
componentWillReceiveProps (nextProps) {
if (!is(nextProps.media, this.props.media) && nextProps.visible === undefined) {
this.setState({ visible: displayMedia !== 'hide_all' && !nextProps.sensitive || displayMedia === 'show_all' });
} else if (!is(nextProps.visible, this.props.visible) && nextProps.visible !== undefined) {
this.setState({ visible: nextProps.visible });
}
}
handleResize = debounce(() => {
if (this.node) {
this._setDimensions();
}
}, 250, {
trailing: true,
});
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handleOpen = () => {
if (this.props.onToggleVisibility) {
this.props.onToggleVisibility();
} else {
this.setState({ visible: !this.state.visible });
}
}
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handleClick = (index) => {
this.props.onOpenMedia(this.props.media, index);
}
handleRef = c => {
this.node = c;
if (this.node) {
this._setDimensions();
}
}
_setDimensions () {
const width = this.node.offsetWidth;
// offsetWidth triggers a layout, so only calculate when we need to
if (this.props.cacheWidth) {
this.props.cacheWidth(width);
}
this.setState({
width: width,
});
}
isFullSizeEligible() {
const { media } = this.props;
return media.size === 1 && media.getIn([0, 'meta', 'small', 'aspect']);
}
render () {
const { media, intl, sensitive, height, defaultWidth, standalone, autoplay } = this.props;
const { visible } = this.state;
const width = this.state.width || defaultWidth;
let children, spoilerButton;
const style = {};
if (this.isFullSizeEligible() && (standalone || !cropImages)) {
if (width) {
style.height = width / this.props.media.getIn([0, 'meta', 'small', 'aspect']);
}
} else if (width) {
style.height = width / (16/9);
} else {
style.height = height;
}
const size = media.take(4).size;
const uncached = media.every(attachment => attachment.get('type') === 'unknown');
if (standalone && this.isFullSizeEligible()) {
children = <Item standalone autoplay={autoplay} onClick={this.handleClick} attachment={media.get(0)} displayWidth={width} visible={visible} />;
} else {
children = media.take(4).map((attachment, i) => <Item key={attachment.get('id')} autoplay={autoplay} onClick={this.handleClick} attachment={attachment} index={i} size={size} displayWidth={width} visible={visible || uncached} />);
}
if (uncached) {
spoilerButton = (
<button type='button' disabled className='spoiler-button__overlay'>
<span className='spoiler-button__overlay__label'><FormattedMessage id='status.uncached_media_warning' defaultMessage='Not available' /></span>
</button>
);
} else if (visible) {
spoilerButton = <IconButton title={intl.formatMessage(messages.toggle_visible, { number: size })} icon='eye-slash' overlay onClick={this.handleOpen} />;
} else {
spoilerButton = (
<button type='button' onClick={this.handleOpen} className='spoiler-button__overlay'>
<span className='spoiler-button__overlay__label'>{sensitive ? <FormattedMessage id='status.sensitive_warning' defaultMessage='Sensitive content' /> : <FormattedMessage id='status.media_hidden' defaultMessage='Media hidden' />}</span>
</button>
);
}
return (
<div className='media-gallery' style={style} ref={this.handleRef}>
<div className={classNames('spoiler-button', { 'spoiler-button--minified': visible && !uncached, 'spoiler-button--click-thru': uncached })}>
{spoilerButton}
</div>
{children}
</div>
);
}
}