[Glitch] Center thumbnails on focus point

Port the display part of the following commits to glitch-soc:
* 865c7e7178
* 62d18a3f9b
* 15ec9431be
* c1d44284ca
This commit is contained in:
Thibaut Girka 2018-04-14 20:31:47 +02:00
parent c4209e12f6
commit e0bffe8856
2 changed files with 21 additions and 9 deletions

View file

@ -136,16 +136,21 @@ 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 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, ${width}vw` : null;
const focusX = attachment.getIn(['meta', 'focus', 'x']) || 0;
const focusY = attachment.getIn(['meta', 'focus', 'y']) || 0;
const x = ((focusX / 2) + .5) * 100;
const y = ((focusY / -2) + .5) * 100;
thumbnail = (
<a
@ -154,7 +159,14 @@ class Item extends React.PureComponent {
onClick={this.handleClick}
target='_blank'
>
<img className={letterbox ? 'letterbox' : null} src={previewUrl} srcSet={srcSet} sizes={sizes} alt={attachment.get('description')} title={attachment.get('description')} />
<img
className={letterbox ? 'letterbox' : null}
src={previewUrl}
srcSet={srcSet}
sizes={sizes}
alt={attachment.get('description')}
title={attachment.get('description')}
style={{ objectPosition: `${x}% ${y}%` }} />
</a>
);
} else if (attachment.get('type') === 'gifv') {
@ -226,7 +238,7 @@ 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,

View file

@ -29,7 +29,7 @@ const formatTime = secondsNum => {
return (hours === '00' ? '' : `${hours}:`) + `${minutes}:${seconds}`;
};
const findElementPosition = el => {
export const findElementPosition = el => {
let box;
if (el.getBoundingClientRect && el.parentNode) {
@ -60,7 +60,7 @@ const findElementPosition = el => {
};
};
const getPointerPosition = (el, event) => {
export const getPointerPosition = (el, event) => {
const position = {};
const box = findElementPosition(el);
const boxW = el.offsetWidth;
@ -76,7 +76,7 @@ const getPointerPosition = (el, event) => {
pageY = event.changedTouches[0].pageY;
}
position.y = Math.max(0, Math.min(1, ((boxY - pageY) + boxH) / boxH));
position.y = Math.max(0, Math.min(1, (pageY - boxY) / boxH));
position.x = Math.max(0, Math.min(1, (pageX - boxX) / boxW));
return position;