Focal points (#6520)

* Add focus param to media API, center thumbnails on focus point

* Add UI for setting a focal point

* Improve focal point icon on upload item

* Use focal point in upload preview

* Add focalPoint property to ActivityPub

* Don't show focal point button for non-image attachments

1 files changed, 15 insertions, 5 deletions

diff --git a/app/javascript/mastodon/features/compose/components/upload.js b/app/javascript/mastodon/features/compose/components/upload.js
index 3a3d17710..61b2d19e0 100644
--- a/app/javascript/mastodon/features/compose/components/upload.js
+++ b/app/javascript/mastodon/features/compose/components/upload.js
@@ -1,15 +1,13 @@
 import React from 'react';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 import PropTypes from 'prop-types';
-import IconButton from '../../../components/icon_button';
 import Motion from '../../ui/util/optional_motion';
 import spring from 'react-motion/lib/spring';
 import ImmutablePureComponent from 'react-immutable-pure-component';
-import { defineMessages, injectIntl } from 'react-intl';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
 import classNames from 'classnames';
 
 const messages = defineMessages({
-  undo: { id: 'upload_form.undo', defaultMessage: 'Undo' },
   description: { id: 'upload_form.description', defaultMessage: 'Describe for the visually impaired' },
 });
 
@@ -21,6 +19,7 @@ export default class Upload extends ImmutablePureComponent {
     intl: PropTypes.object.isRequired,
     onUndo: PropTypes.func.isRequired,
     onDescriptionChange: PropTypes.func.isRequired,
+    onOpenFocalPoint: PropTypes.func.isRequired,
   };
 
   state = {
@@ -33,6 +32,10 @@ export default class Upload extends ImmutablePureComponent {
     this.props.onUndo(this.props.media.get('id'));
   }
 
+  handleFocalPointClick = () => {
+    this.props.onOpenFocalPoint(this.props.media.get('id'));
+  }
+
   handleInputChange = e => {
     this.setState({ dirtyDescription: e.target.value });
   }
@@ -63,13 +66,20 @@ export default class Upload extends ImmutablePureComponent {
     const { intl, media } = this.props;
     const active          = this.state.hovered || this.state.focused;
     const description     = this.state.dirtyDescription || (this.state.dirtyDescription !== '' && media.get('description')) || '';
+    const focusX = media.getIn(['meta', 'focus', 'x']);
+    const focusY = media.getIn(['meta', 'focus', 'y']);
+    const x = ((focusX /  2) + .5) * 100;
+    const y = ((focusY / -2) + .5) * 100;
 
     return (
       <div className='compose-form__upload' onMouseEnter={this.handleMouseEnter} onMouseLeave={this.handleMouseLeave}>
         <Motion defaultStyle={{ scale: 0.8 }} style={{ scale: spring(1, { stiffness: 180, damping: 12 }) }}>
           {({ scale }) => (
-            <div className='compose-form__upload-thumbnail' style={{ transform: `scale(${scale})`, backgroundImage: `url(${media.get('preview_url')})` }}>
-              <IconButton icon='times' title={intl.formatMessage(messages.undo)} size={36} onClick={this.handleUndoClick} />
+            <div className='compose-form__upload-thumbnail' style={{ transform: `scale(${scale})`, backgroundImage: `url(${media.get('preview_url')})`, backgroundPosition: `${x}% ${y}%` }}>
+              <div className={classNames('compose-form__upload__actions', { active })}>
+                <button className='icon-button' onClick={this.handleUndoClick}><i className='fa fa-times' /> <FormattedMessage id='upload_form.undo' defaultMessage='Undo' /></button>
+                {media.get('type') === 'image' && <button className='icon-button' onClick={this.handleFocalPointClick}><i className='fa fa-crosshairs' /> <FormattedMessage id='upload_form.focus' defaultMessage='Crop' /></button>}
+              </div>
 
               <div className={classNames('compose-form__upload-description', { active })}>
                 <label>