diff options
Diffstat (limited to 'app/javascript/mastodon/components/media_gallery.js')
-rw-r--r-- | app/javascript/mastodon/components/media_gallery.js | 71 |
1 files changed, 62 insertions, 9 deletions
diff --git a/app/javascript/mastodon/components/media_gallery.js b/app/javascript/mastodon/components/media_gallery.js index a3ffc45ea..9e1bb77c2 100644 --- a/app/javascript/mastodon/components/media_gallery.js +++ b/app/javascript/mastodon/components/media_gallery.js @@ -12,6 +12,26 @@ 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 = { @@ -24,6 +44,8 @@ class Item extends React.PureComponent { index: PropTypes.number.isRequired, size: PropTypes.number.isRequired, onClick: PropTypes.func.isRequired, + containerWidth: PropTypes.number, + containerHeight: PropTypes.number, }; static defaultProps = { @@ -62,7 +84,7 @@ class Item extends React.PureComponent { } render () { - const { attachment, index, size, standalone } = this.props; + const { attachment, index, size, standalone, containerWidth, containerHeight } = this.props; let width = 50; let height = 100; @@ -116,16 +138,40 @@ class Item extends React.PureComponent { let thumbnail = ''; if (attachment.get('type') === 'image') { - const previewUrl = attachment.get('preview_url'); + 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 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 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 @@ -134,7 +180,14 @@ class Item extends React.PureComponent { onClick={this.handleClick} target='_blank' > - <img src={previewUrl} srcSet={srcSet} sizes={sizes} alt={attachment.get('description')} title={attachment.get('description')} /> + <img + src={previewUrl} + srcSet={srcSet} + sizes={sizes} + alt={attachment.get('description')} + title={attachment.get('description')} + style={imageStyle} + /> </a> ); } else if (attachment.get('type') === 'gifv') { @@ -205,7 +258,7 @@ export default class MediaGallery extends React.PureComponent { } handleRef = (node) => { - if (node && this.isStandaloneEligible()) { + if (node /*&& this.isStandaloneEligible()*/) { // offsetWidth triggers a layout, so only calculate when we need to this.setState({ width: node.offsetWidth, @@ -256,12 +309,12 @@ export default class MediaGallery extends React.PureComponent { 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} />); + children = media.take(4).map((attachment, i) => <Item key={attachment.get('id')} onClick={this.handleClick} attachment={attachment} index={i} size={size} containerWidth={width} containerHeight={height} />); } } return ( - <div className='media-gallery' style={style}> + <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> |