Prepare frontend repository for monorepo

This change prepares the frontend Git repository for the monorepo
residing at https://github.com/atlarge-research.com/opendc. To
accomodate for this, we move all files into a frontend subdirectory.

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;