反應傳單標記旋轉

Question

我已經按照這個來構建一個旋轉的標記，但不幸的是，它在這里不起作用是我創建的組件

class RotatedMarker extends MapLayer {

static defaultProps = {
    rotationOrigin: 'center',
};

createLeafletElement(props) {
    const el = new LeafletMarker(props.position, this.getOptions(props));
    this.contextValue = {...props.leaflet, popupContainer: el};
    return el;
}

updateLeafletElement(fromProps, toProps) {
    if (toProps.position !== fromProps.position) {
        this.leafletElement.setLatLng(toProps.position);
    }
    if (toProps.icon !== fromProps.icon) {
        this.leafletElement.setIcon(toProps.icon);
    }
    if (toProps.zIndexOffset !== fromProps.zIndexOffset) {
        this.leafletElement.setZIndexOffset(toProps.zIndexOffset);
    }
    if (toProps.opacity !== fromProps.opacity) {
        this.leafletElement.setOpacity(toProps.opacity);
    }
    if (toProps.draggable !== fromProps.draggable) {
        if (toProps.draggable === true) {
            this.leafletElement.dragging.enable();
        } else {
            this.leafletElement.dragging.disable();
        }
    }
    if (toProps.rotationAngle !== fromProps.rotationAngle) {
        this.leafletElement.setRotationAngle(toProps.rotationAngle);
    }
    if (toProps.rotationOrigin !== fromProps.rotationOrigin) {
        this.leafletElement.setRotationOrigin(toProps.rotationOrigin);
    }
}

render() {
    const {children} = this.props;
    return children == null || this.contextValue == null ? null : (
        <LeafletProvider value={this.contextValue}>{children}</LeafletProvider>
    );
}
}

這就是我使用組件的方式：

<RotatedMarker
    rotationAngle={120}
    rotationOrigin="center"
    position={[violation.latitude,violation.longitude,]}
    icon={getMarkerIcon().icon}>
</RotatedMarker>

我試圖調用這個函數this.leafletElement.setRotationAngle(toProps.rotationAngle); 直接但我收到以下錯誤：

類型錯誤：this.leafletElement.setRotationAngle 不是函數

我正在使用 react-leaflet V2

Answer 1

這個對我有用。 不確定您的設置是什么，但您需要安裝leaflet-rotatedmarker插件並將其導入您的自定義組件中，以免收到該錯誤。

你應該有這個

import React from "react";
import { Marker as LeafletMarker } from "leaflet";
import { LeafletProvider, withLeaflet, MapLayer } from "react-leaflet";
import "leaflet-rotatedmarker"; //here import the plugin

class RotatedMarker extends MapLayer {
  static defaultProps = {
    rotationOrigin: "center"
  };
...

這是一個工作演示