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Diffstat (limited to 'frontend/src/components/app/map/elements/ImageComponent.js')
| -rw-r--r-- | frontend/src/components/app/map/elements/ImageComponent.js | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/frontend/src/components/app/map/elements/ImageComponent.js b/frontend/src/components/app/map/elements/ImageComponent.js new file mode 100644 index 00000000..cf41ddfe --- /dev/null +++ b/frontend/src/components/app/map/elements/ImageComponent.js @@ -0,0 +1,48 @@ +import PropTypes from "prop-types"; +import React from "react"; +import { Image } from "react-konva"; + +class ImageComponent extends React.Component { + static imageCaches = {}; + static propTypes = { + src: PropTypes.string.isRequired, + x: PropTypes.number.isRequired, + y: PropTypes.number.isRequired, + width: PropTypes.number.isRequired, + height: PropTypes.number.isRequired, + opacity: PropTypes.number.isRequired + }; + + state = { + image: null + }; + + componentDidMount() { + if (ImageComponent.imageCaches[this.props.src]) { + this.setState({ image: ImageComponent.imageCaches[this.props.src] }); + return; + } + + const image = new window.Image(); + image.src = this.props.src; + image.onload = () => { + this.setState({ image }); + ImageComponent.imageCaches[this.props.src] = image; + }; + } + + render() { + return ( + <Image + image={this.state.image} + x={this.props.x} + y={this.props.y} + width={this.props.width} + height={this.props.height} + opacity={this.props.opacity} + /> + ); + } +} + +export default ImageComponent; |
