如何在单独的控制框中创建驻留在传单地图上的自定义按钮,以创建“折线”、“多边形”或“标记”,这些按钮都将位于单独的按钮上,而无需使用传单绘制 标准 UI 工具栏。我真的很想知道如何用“React”方式与 Vanilla Javascript 编写它,因为我的整个程序都是用 React 编写的。如果有人可以编写一个简单的程序,展示如何在 React 中使用单独的按钮绘制“折线、多边形”等,将不胜感激。
这是我的一些代码的片段。谢谢
<Map
zoomControl={false}
center={position}
zoom={this.state.zoom}
className={classes.height}
ref={m => {
this.leafletMap = m;
}}>
{/* LAYER CONTROL ON TOP OF MAP*/}
<LayersControl position="topright">
<BaseLayer checked name="OpenStreetMap.Mapnik">
<TileLayer
attribution='&copy <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
/>
</BaseLayer>
<BaseLayer name="OpenStreetMap.BlackAndWhite">
<TileLayer
attribution='&copy <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
url="https://tiles.wmflabs.org/bw-mapnik/{z}/{x}/{y}.png"
/>
</BaseLayer>
</LayersControl>
**CALLS OTHER COMPONENT WHICH RENDERS FEATUREGROUP, EDITCONTROL**
**<Mapediting save={this.setSave} myIcon={myIcon} />**
<ZoomControl position="topright" />
<TileLayer
attribution='&copy <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
/>
{/* show users general area */}
<Marker position={position} icon={myIcon} title="Your Position" draggable={true}>
{/* <Popup>
Your Mapped Location <br /> Lat: {this.state.location.lat}
Long: {this.state.location.lng}
</Popup> */}
</Marker>
</Map>
其他组件
const mapSelectors = myIcon => (
<FeatureGroup>
<EditControl
style={{ backgroundColor: "blue" }}
onCreated={event => _onCreate(event)}
draw={{
polyline: {
shapeOptions: { color: "red" },
allowIntersection: false,
showLength: true,
metric: false,
feet: false
},
polygon: {
allowIntersection: false,
shapeOptions: { color: "blue" },
edit: false,
showLength: true,
metric: false,
feet: false,
showArea: true
},
rectangle: {
shapeOptions: { color: "green" },
showLength: true,
metric: false,
feet: false,
showArea: true
},
circle: {
shapeOptions: { color: "magenta" },
showLength: true,
metric: false,
feet: false,
showArea: true
},
marker: { zIndexOffset: "999", edit: true, icon: myIcon }
}}
/>
{/* {(L.drawLocal.draw.toolbar.buttons.polygon = "draw")} */}
<Circle center={[51.51, -0.06]} radius={200} />
</FeatureGroup>
);
class MapEditing extends React.Component {
constructor(props) {
super(props);
this.state = {
draw: false
};
}
render() {
const { classes, save, myIcon } = this.props;
return (
{this.state.draw && mapSelectors()}
)
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