83 lines
2.6 KiB
JavaScript
83 lines
2.6 KiB
JavaScript
import React, { Component } from 'react';
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import PropTypes from 'prop-types';
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import { getFormattedColor, getStrokeWidth, denormalizeCoord } from '../helpers';
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export default class RectangleDrawComponent extends Component {
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shouldComponentUpdate(nextProps) {
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const { version } = this.props;
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return version !== nextProps.version;
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}
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getCoordinates() {
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const { slideWidth, slideHeight, annotation } = this.props;
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const { points } = annotation;
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/* eslint-disable prefer-destructuring */
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// x1 and y1 are the coordinates of the top left corner of the annotation
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// x2 and y2 are the coordinates of the bottom right corner of the annotation
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let x1 = points[0];
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let y1 = points[1];
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let x2 = points[2];
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let y2 = points[3];
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// Presenter pulled rectangle to the left
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if (x2 < x1) {
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x1 = points[2];
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x2 = points[0];
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}
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// Presenter pulled Rectangle to the top
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if (y2 < y1) {
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y1 = points[3];
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y2 = points[1];
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}
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/* eslint-enable prefer-destructuring */
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const x = denormalizeCoord(x1, slideWidth);
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const y = denormalizeCoord(y1, slideHeight);
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const width = denormalizeCoord((x2 - x1), slideWidth);
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const height = denormalizeCoord((y2 - y1), slideHeight);
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return {
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x,
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y,
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width,
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height,
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};
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}
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render() {
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const results = this.getCoordinates();
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const { annotation, slideWidth } = this.props;
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const { fill } = annotation;
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return (
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<rect
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x={results.x}
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y={results.y}
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width={results.width}
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height={results.height}
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fill={ fill ? getFormattedColor(annotation.color) : "none" }
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stroke={getFormattedColor(annotation.color)}
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strokeWidth={getStrokeWidth(annotation.thickness, slideWidth)}
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style={{ WebkitTapHighlightColor: 'rgba(0, 0, 0, 0)' }}
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data-test="drawnRectangle"
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/>
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);
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}
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}
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RectangleDrawComponent.propTypes = {
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// Defines a version of the shape, so that we know if we need to update the component or not
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version: PropTypes.number.isRequired,
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// Defines an annotation object, which contains all the basic info we need to draw a rectangle
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annotation: PropTypes.shape({
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points: PropTypes.arrayOf(PropTypes.number).isRequired,
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color: PropTypes.number.isRequired,
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thickness: PropTypes.number.isRequired,
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fill: PropTypes.bool.isRequired,
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}).isRequired,
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// Defines the width of the slide (svg coordinate system), which needed in calculations
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slideWidth: PropTypes.number.isRequired,
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// Defines the height of the slide (svg coordinate system), which needed in calculations
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slideHeight: PropTypes.number.isRequired,
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};
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