Mercurial > gemma
view client/src/components/layers/LegendElement.vue @ 2957:b74ebeb2bdc8
client: layers: improved structure of layer configuration
The object is now less cluttered, access to the layers is more direct, no need for helper methods
anymore.
author | Markus Kottlaender <markus@intevation.de> |
---|---|
date | Mon, 08 Apr 2019 15:32:53 +0200 |
parents | a3017800e045 |
children | 1b8bb4f89227 |
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<template> <div :id="id" class="legendelement"></div> </template> <script> /* This is Free Software under GNU Affero General Public License v >= 3.0 * without warranty, see README.md and license for details. * * SPDX-License-Identifier: AGPL-3.0-or-later * License-Filename: LICENSES/AGPL-3.0.txt * * Copyright (C) 2018 by via donau * – Österreichische Wasserstraßen-Gesellschaft mbH * Software engineering by Intevation GmbH * * Author(s): * Thomas Junk <thomas.junk@intevation.de> */ import { mapState } from "vuex"; import { Map, View } from "ol"; import Feature from "ol/Feature"; import { Vector as VectorLayer } from "ol/layer.js"; import { Vector as VectorSource } from "ol/source.js"; import LineString from "ol/geom/LineString.js"; import Point from "ol/geom/Point"; export default { props: ["layer"], data: function() { return { myMap: null }; }, computed: { ...mapState("map", ["layers"]), id() { return ( "legendelement-" + this.layer .get("label") .toLowerCase() .replace(/\s/g, "") ); }, mstyle() { if (this.layer && this.layer.getStyle) { return this.layer.getStyle(); } } }, watch: { mstyle(newStyle, oldStyle) { // only recreate if there already was a style before if (oldStyle) { let vector = this.createVectorLayer(); this.myMap.removeLayer(this.myMap.getLayers()[0]); this.myMap.addLayer(vector); } } }, mounted() { if (this.layer.getType() == "VECTOR") { this.initMap(); } else { // TODO other tiles } }, methods: { initMap() { let vector = this.createVectorLayer(); this.myMap = new Map({ layers: [vector], target: this.id, controls: [], interactions: [], view: new View({ center: [0, 0], zoom: 3, projection: "EPSG:4326" }) }); }, createVectorLayer() { let mapStyle = this.layer.getStyle(); let feature = new Feature({ geometry: new LineString([[-1, 0.5], [0, 0], [0.7, 0], [1.3, -0.7]]) }); // special case if we need to call the style function with a special // parameter or to detect a point layer let legendStyle = this.layer.get("forLegendStyle"); if (legendStyle) { if (legendStyle) { feature.setGeometry(new Point([0, 0])); } mapStyle = this.layer.getStyleFunction()( feature, legendStyle.resolution, true ); } // we could add extra properties here, if they are needed for // the styling function in the future. An idea is to extend the // this.layer["forLegendStyle"] for it. // FIXME, this is a special case for the Fairway Dimensions style feature.set("level_of_service", ""); return new VectorLayer({ source: new VectorSource({ features: [feature], wrapX: false }), style: mapStyle }); } } }; </script> <style lang="scss" scoped> .legendelement { max-height: 1.5rem; width: 2rem; } </style>