123 lines
		
	
	
		
			3.3 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			123 lines
		
	
	
		
			3.3 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
import React from 'react';
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import ImmutablePropTypes from 'react-immutable-proptypes';
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import ImmutablePureComponent from 'react-immutable-pure-component';
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import { connect } from 'react-redux';
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import ImageLoader from './image_loader';
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import classNames from 'classnames';
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import { changeUploadCompose } from '../../../actions/compose';
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import { getPointerPosition } from '../../video';
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const mapStateToProps = (state, { id }) => ({
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  media: state.getIn(['compose', 'media_attachments']).find(item => item.get('id') === id),
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});
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const mapDispatchToProps = (dispatch, { id }) => ({
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  onSave: (x, y) => {
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    dispatch(changeUploadCompose(id, { focus: `${x.toFixed(2)},${y.toFixed(2)}` }));
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  },
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});
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@connect(mapStateToProps, mapDispatchToProps)
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export default class FocalPointModal extends ImmutablePureComponent {
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  static propTypes = {
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    media: ImmutablePropTypes.map.isRequired,
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  };
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  state = {
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    x: 0,
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    y: 0,
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    focusX: 0,
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    focusY: 0,
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    dragging: false,
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  };
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  componentWillMount () {
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    this.updatePositionFromMedia(this.props.media);
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  }
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  componentWillReceiveProps (nextProps) {
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    if (this.props.media.get('id') !== nextProps.media.get('id')) {
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      this.updatePositionFromMedia(nextProps.media);
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    }
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  }
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  componentWillUnmount () {
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    document.removeEventListener('mousemove', this.handleMouseMove);
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    document.removeEventListener('mouseup', this.handleMouseUp);
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  }
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  handleMouseDown = e => {
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    document.addEventListener('mousemove', this.handleMouseMove);
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    document.addEventListener('mouseup', this.handleMouseUp);
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    this.updatePosition(e);
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    this.setState({ dragging: true });
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  }
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  handleMouseMove = e => {
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    this.updatePosition(e);
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  }
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  handleMouseUp = () => {
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    document.removeEventListener('mousemove', this.handleMouseMove);
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    document.removeEventListener('mouseup', this.handleMouseUp);
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    this.setState({ dragging: false });
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    this.props.onSave(this.state.focusX, this.state.focusY);
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  }
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  updatePosition = e => {
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    const { x, y } = getPointerPosition(this.node, e);
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    const focusX   = (x - .5) *  2;
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    const focusY   = (y - .5) * -2;
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    this.setState({ x, y, focusX, focusY });
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  }
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  updatePositionFromMedia = media => {
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    const focusX = media.getIn(['meta', 'focus', 'x']);
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    const focusY = media.getIn(['meta', 'focus', 'y']);
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    if (focusX && focusY) {
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      const x = (focusX /  2) + .5;
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      const y = (focusY / -2) + .5;
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      this.setState({ x, y, focusX, focusY });
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    } else {
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      this.setState({ x: 0.5, y: 0.5, focusX: 0, focusY: 0 });
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    }
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  }
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  setRef = c => {
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    this.node = c;
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  }
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  render () {
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    const { media } = this.props;
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    const { x, y, dragging } = this.state;
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    const width  = media.getIn(['meta', 'original', 'width']) || null;
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    const height = media.getIn(['meta', 'original', 'height']) || null;
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    return (
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      <div className='modal-root__modal video-modal focal-point-modal'>
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        <div className={classNames('focal-point', { dragging })} ref={this.setRef}>
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          <ImageLoader
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            previewSrc={media.get('preview_url')}
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            src={media.get('url')}
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            width={width}
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            height={height}
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          />
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          <div className='focal-point__reticle' style={{ top: `${y * 100}%`, left: `${x * 100}%` }} />
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          <div className='focal-point__overlay' onMouseDown={this.handleMouseDown} />
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        </div>
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      </div>
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    );
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  }
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}
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