chinwagsocial/app/javascript/mastodon/components/media_gallery.js
Eugen Rochko 036dd98abb
Responsively enforce 16:9 ratio on all media thumbnails in web UI (#6590)
* Responsively enforce 16:9 ratio on all media thumbnails in web UI

Also change video player behaviour to "contain" rather than
"cover" videos that don't fit the ratio, unlike images and GIFs,
it's expected that a video is shown fully.

* Fix spacing issues and remove floor

* Remove floor
2018-03-02 07:00:04 +01:00

328 lines
9.3 KiB
JavaScript

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 { isIOS } from '../is_mobile';
import classNames from 'classnames';
import { autoPlayGif, displaySensitiveMedia } from '../initial_state';
const messages = defineMessages({
toggle_visible: { id: 'media_gallery.toggle_visible', defaultMessage: 'Toggle visibility' },
});
const shiftToPoint = (containerToImageRatio, containerSize, imageSize, focusSize, toMinus) => {
const containerCenter = Math.floor(containerSize / 2);
const focusFactor = (focusSize + 1) / 2;
const scaledImage = Math.floor(imageSize / containerToImageRatio);
let focus = Math.floor(focusFactor * scaledImage);
if (toMinus) focus = scaledImage - focus;
let focusOffset = focus - containerCenter;
const remainder = scaledImage - focus;
const containerRemainder = containerSize - containerCenter;
if (remainder < containerRemainder) focusOffset -= containerRemainder - remainder;
if (focusOffset < 0) focusOffset = 0;
return (focusOffset * -100 / containerSize) + '%';
};
class Item extends React.PureComponent {
static contextTypes = {
router: PropTypes.object,
};
static propTypes = {
attachment: ImmutablePropTypes.map.isRequired,
standalone: PropTypes.bool,
index: PropTypes.number.isRequired,
size: PropTypes.number.isRequired,
onClick: PropTypes.func.isRequired,
containerWidth: PropTypes.number,
containerHeight: PropTypes.number,
};
static defaultProps = {
standalone: false,
index: 0,
size: 1,
};
handleMouseEnter = (e) => {
if (this.hoverToPlay()) {
e.target.play();
}
}
handleMouseLeave = (e) => {
if (this.hoverToPlay()) {
e.target.pause();
e.target.currentTime = 0;
}
}
hoverToPlay () {
const { attachment } = this.props;
return !autoPlayGif && attachment.get('type') === 'gifv';
}
handleClick = (e) => {
const { index, onClick } = this.props;
if (this.context.router && e.button === 0) {
e.preventDefault();
onClick(index);
}
e.stopPropagation();
}
render () {
const { attachment, index, size, standalone, containerWidth, containerHeight } = 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') === '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 originalHeight = attachment.getIn(['meta', 'original', 'height']);
const hasSize = typeof originalWidth === 'number' && typeof previewWidth === 'number';
const srcSet = hasSize ? `${originalUrl} ${originalWidth}w, ${previewUrl} ${previewWidth}w` : null;
const sizes = hasSize ? `(min-width: 1025px) ${320 * (width / 100)}px, ${width}vw` : null;
const focusX = attachment.getIn(['meta', 'focus', 'x']);
const focusY = attachment.getIn(['meta', 'focus', 'y']);
const imageStyle = {};
if (originalWidth && originalHeight && containerWidth && containerHeight && focusX && focusY) {
const widthRatio = originalWidth / (containerWidth * (width / 100));
const heightRatio = originalHeight / (containerHeight * (height / 100));
let hShift = 0;
let vShift = 0;
if (widthRatio > heightRatio) {
hShift = shiftToPoint(heightRatio, (containerWidth * (width / 100)), originalWidth, focusX);
} else if(widthRatio < heightRatio) {
vShift = shiftToPoint(widthRatio, (containerHeight * (height / 100)), originalHeight, focusY, true);
}
imageStyle.top = vShift;
imageStyle.left = hShift;
} else {
imageStyle.height = '100%';
}
thumbnail = (
<a
className='media-gallery__item-thumbnail'
href={attachment.get('remote_url') || originalUrl}
onClick={this.handleClick}
target='_blank'
>
<img
src={previewUrl}
srcSet={srcSet}
sizes={sizes}
alt={attachment.get('description')}
title={attachment.get('description')}
style={imageStyle}
/>
</a>
);
} else if (attachment.get('type') === 'gifv') {
const autoPlay = !isIOS() && autoPlayGif;
thumbnail = (
<div className={classNames('media-gallery__gifv', { autoplay: autoPlay })}>
<video
className='media-gallery__item-gifv-thumbnail'
aria-label={attachment.get('description')}
role='application'
src={attachment.get('url')}
onClick={this.handleClick}
onMouseEnter={this.handleMouseEnter}
onMouseLeave={this.handleMouseLeave}
autoPlay={autoPlay}
loop
muted
/>
<span className='media-gallery__gifv__label'>GIF</span>
</div>
);
}
return (
<div className={classNames('media-gallery__item', { standalone })} key={attachment.get('id')} style={{ left: left, top: top, right: right, bottom: bottom, width: `${width}%`, height: `${height}%` }}>
{thumbnail}
</div>
);
}
}
@injectIntl
export default 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,
};
static defaultProps = {
standalone: false,
};
state = {
visible: !this.props.sensitive || displaySensitiveMedia,
};
componentWillReceiveProps (nextProps) {
if (!is(nextProps.media, this.props.media)) {
this.setState({ visible: !nextProps.sensitive });
}
}
handleOpen = () => {
this.setState({ visible: !this.state.visible });
}
handleClick = (index) => {
this.props.onOpenMedia(this.props.media, index);
}
handleRef = (node) => {
if (node /*&& this.isStandaloneEligible()*/) {
// offsetWidth triggers a layout, so only calculate when we need to
this.setState({
width: node.offsetWidth,
});
}
}
isStandaloneEligible() {
const { media, standalone } = this.props;
return standalone && media.size === 1 && media.getIn([0, 'meta', 'small', 'aspect']);
}
render () {
const { media, intl, sensitive, height } = this.props;
const { width, visible } = this.state;
let children;
const style = {};
if (this.isStandaloneEligible()) {
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;
}
if (!visible) {
let warning;
if (sensitive) {
warning = <FormattedMessage id='status.sensitive_warning' defaultMessage='Sensitive content' />;
} else {
warning = <FormattedMessage id='status.media_hidden' defaultMessage='Media hidden' />;
}
children = (
<button type='button' className='media-spoiler' onClick={this.handleOpen} style={style} ref={this.handleRef}>
<span className='media-spoiler__warning'>{warning}</span>
<span className='media-spoiler__trigger'><FormattedMessage id='status.sensitive_toggle' defaultMessage='Click to view' /></span>
</button>
);
} else {
const size = media.take(4).size;
if (this.isStandaloneEligible()) {
children = <Item standalone onClick={this.handleClick} attachment={media.get(0)} />;
} else {
children = media.take(4).map((attachment, i) => <Item key={attachment.get('id')} onClick={this.handleClick} attachment={attachment} index={i} size={size} containerWidth={width} containerHeight={style.height} />);
}
}
return (
<div className='media-gallery' style={style} ref={this.handleRef}>
<div className={classNames('spoiler-button', { 'spoiler-button--visible': visible })}>
<IconButton title={intl.formatMessage(messages.toggle_visible)} icon={visible ? 'eye' : 'eye-slash'} overlay onClick={this.handleOpen} />
</div>
{children}
</div>
);
}
}