@syncromatics/react-google-maps/src/components/OverlayView.md

React.js Google Maps integration component

### Click the Marker to show OverlayView

```jsx
const { compose, withProps, withStateHandlers } = require("recompose");
const FaAnchor = require("react-icons/lib/fa/anchor");
const {
  withScriptjs,
  withGoogleMap,
  GoogleMap,
  OverlayView,
} = require("@syncromatics/react-google-maps");

const getPixelPositionOffset = (width, height) => ({
  x: -(width / 2),
  y: -(height / 2),
})

const MapWithAnOverlayView = compose(
  withStateHandlers(() => ({
    count: 0,
  }), {
    onClick: ({ count }) => () => ({
      count: count + 1,
    })
  }),
  withScriptjs,
  withGoogleMap
)(props =>
  <GoogleMap
    defaultZoom={8}
    defaultCenter={{ lat: -34.397, lng: 150.644 }}
  >
    <OverlayView
      position={{ lat: -34.397, lng: 150.644 }}
      /*
       * An alternative to specifying position is specifying bounds.
       * bounds can either be an instance of google.maps.LatLngBounds
       * or an object in the following format:
       * bounds={{
       *    ne: { lat: 62.400471, lng: -150.005608 },
       *    sw: { lat: 62.281819, lng: -150.287132 }
       * }}
       */
      /*
       * 1. Specify the pane the OverlayView will be rendered to. For
       *    mouse interactivity, use `OverlayView.OVERLAY_MOUSE_TARGET`.
       *    Defaults to `OverlayView.OVERLAY_LAYER`.
       */
      mapPaneName={OverlayView.OVERLAY_MOUSE_TARGET}
      /*
       * 2. Tweak the OverlayView's pixel position. In this case, we're
       *    centering the content. Warning, this ultimately causes the browser
       *    to render/reflow. If you can use a fixed pixel position offset, use
       *    the pixelPositionOffset prop instead:
       * 
       *    pixelPositionOffset={{ x: 10, y: 20 }}
       */
      getPixelPositionOffset={getPixelPositionOffset}
      /*
       * 3. Create OverlayView content using standard React components.
       */
    >
      <div style={{ background: `white`, border: `1px solid #ccc`, padding: 15 }}>
        <h1>OverlayView</h1>
        <button onClick={props.onClick} style={{ height: 60 }}>
          I have been clicked {props.count} time{props.count > 1 ? `s` : ``}
        </button>
      </div>
    </OverlayView>
  </GoogleMap>
);

<MapWithAnOverlayView
  googleMapURL={GOOGLE_MAP_URL}
  loadingElement={<div style={{ height: `100%` }} />}
  containerElement={<div style={{ height: `400px` }} />}
  mapElement={<div style={{ height: `100%` }} />}
/>
```