65 lines
1.9 KiB
JavaScript
65 lines
1.9 KiB
JavaScript
import React, { Component } from 'react';
|
|
import PropTypes from 'prop-types';
|
|
import { getFormattedColor, getStrokeWidth, denormalizeCoord } from '../helpers';
|
|
|
|
export default class LineDrawComponent extends Component {
|
|
shouldComponentUpdate(nextProps) {
|
|
const { version } = this.props;
|
|
return version !== nextProps.version;
|
|
}
|
|
|
|
getCoordinates() {
|
|
const { slideWidth, slideHeight, annotation } = this.props;
|
|
const { points } = annotation;
|
|
|
|
const x1 = denormalizeCoord(points[0], slideWidth);
|
|
const y1 = denormalizeCoord(points[1], slideHeight);
|
|
const x2 = denormalizeCoord(points[2], slideWidth);
|
|
const y2 = denormalizeCoord(points[3], slideHeight);
|
|
|
|
return {
|
|
x1,
|
|
y1,
|
|
x2,
|
|
y2,
|
|
};
|
|
}
|
|
|
|
render() {
|
|
const results = this.getCoordinates();
|
|
const { annotation, slideWidth } = this.props;
|
|
const {
|
|
x1, y1, x2, y2,
|
|
} = results;
|
|
|
|
return (
|
|
<line
|
|
x1={x1}
|
|
y1={y1}
|
|
x2={x2}
|
|
y2={y2}
|
|
stroke={getFormattedColor(annotation.color)}
|
|
strokeLinejoin="round"
|
|
strokeWidth={getStrokeWidth(annotation.thickness, slideWidth)}
|
|
style={{ WebkitTapHighlightColor: 'rgba(0, 0, 0, 0)' }}
|
|
data-test="drawnLine"
|
|
/>
|
|
);
|
|
}
|
|
}
|
|
|
|
LineDrawComponent.propTypes = {
|
|
// Defines a version of the shape, so that we know if we need to update the component or not
|
|
version: PropTypes.number.isRequired,
|
|
// Defines an annotation object, which contains all the basic info we need to draw a line
|
|
annotation: PropTypes.shape({
|
|
points: PropTypes.arrayOf(PropTypes.number).isRequired,
|
|
color: PropTypes.number.isRequired,
|
|
thickness: PropTypes.number.isRequired,
|
|
}).isRequired,
|
|
// Defines the width of the slide (svg coordinate system), which needed in calculations
|
|
slideWidth: PropTypes.number.isRequired,
|
|
// Defines the height of the slide (svg coordinate system), which needed in calculations
|
|
slideHeight: PropTypes.number.isRequired,
|
|
};
|