@skinnyjames/vue2-leaflet-canvas
v1.1.0
Published
A Vue2Leaflet wrapper for @skinnyjames/leaflet-canvas
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vue2-leaflet-canvas
A Vue2Leaflet wrapper for @skinnyjames/leaflet-canvas
usage
npm install @skinnyjames/vue2-leaflet-canvas
in your app
<v-map ref="map" :zoom="10">
<v-tilelayer url="http://{s}.tile.osm.org/{z}/{x}/{y}.png"></v-tilelayer>
<v-canvas-layer
:locations="locations"
@l-drawing="drawing"
@l-mousemove="hover"
@l-click="click">
</v-canvas-layer>
</v-map>
import Vue2Leaflet from 'vue2-leaflet'
import Vue2LeafletCanvas from '@skinnyjames/vue2-leaflet-canvas'
Vue.component('v-map', Vue2Leaflet.Map)
Vue.component('v-tilelayer', Vue2Leaflet.TileLayer)
Vue.component('v-canvas-layer': Vue2LeafletCanvas)
methods: {
data() {
// generate an array of locations that have a L.latLng property named "latlng"
...
return {
locations: locations,
}
},
// use the drawing event to get access to the canvas element
drawing(info) {
let canvas = info.canvas
let ctx = canvas.getContext('2d')
let mapa = this.$refs.map.mapObject
let bounds = mapa.getBounds()
ctx.fillStyle = "rgb(106, 158, 242)"
for (let i=0;i<this.locations.length;i++) {
if (bounds.contains(this.locations[i].latlng)) {
var dot = mapa.latLngToContainerPoint(this.locations[i].latlng)
ctx.beginPath()
ctx.arc(dot.x, dot.y, 3, 0, Math.PI * 2)
ctx.fill()
ctx.closePath()
}
}
},
// logic for hover
hover(info) {
let vm = this
let container = document.getElementsByClassName('leaflet-container')[0]
// isMoused has a boolean describing if a location is hovered over
if (info.isMoused) {
container.style.cursor = 'crosshair'
} else {
container.style.cursor = ''
}
},
// logic for clicks
click(info) {
let vm = this
// clickedLocations will have any clicked location objects
let points = info.clickedLocations
if (points[0]) {
alert(points[0].message)
}
},
}
notes
You don't need to pass an array to the locations property, as you'll be drawing on the canvas yourself. However, the isMoused and clickedLocations properties only work when there are locations with valid latlngs
develop
git clone [email protected]:skinnyjames/vue2-leaflet-canvas.git && cd vue2-leaflet-canvas
npm install
npm run build
npm run demo