95 lines
2.1 KiB
JavaScript
95 lines
2.1 KiB
JavaScript
import Map from '../src/ol/Map.js';
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import View from '../src/ol/View.js';
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import GeoJSON from '../src/ol/format/GeoJSON.js';
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import VectorLayer from '../src/ol/layer/Vector.js';
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import VectorSource from '../src/ol/source/Vector.js';
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import _ol_style_Fill_ from '../src/ol/style/Fill.js';
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import _ol_style_Stroke_ from '../src/ol/style/Stroke.js';
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import _ol_style_Style_ from '../src/ol/style/Style.js';
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import _ol_style_Text_ from '../src/ol/style/Text.js';
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var style = new _ol_style_Style_({
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fill: new _ol_style_Fill_({
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color: 'rgba(255, 255, 255, 0.6)'
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}),
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stroke: new _ol_style_Stroke_({
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color: '#319FD3',
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width: 1
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}),
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text: new _ol_style_Text_()
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});
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var map = new Map({
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layers: [
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new VectorLayer({
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renderMode: 'image',
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source: new VectorSource({
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url: 'data/geojson/countries.geojson',
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format: new GeoJSON()
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}),
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style: function(feature) {
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style.getText().setText(feature.get('name'));
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return style;
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}
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})
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],
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target: 'map',
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view: new View({
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center: [0, 0],
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zoom: 1
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})
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});
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var featureOverlay = new VectorLayer({
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source: new VectorSource(),
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map: map,
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style: new _ol_style_Style_({
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stroke: new _ol_style_Stroke_({
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color: '#f00',
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width: 1
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}),
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fill: new _ol_style_Fill_({
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color: 'rgba(255,0,0,0.1)'
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})
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})
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});
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var highlight;
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var displayFeatureInfo = function(pixel) {
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var feature = map.forEachFeatureAtPixel(pixel, function(feature) {
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return feature;
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});
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var info = document.getElementById('info');
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if (feature) {
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info.innerHTML = feature.getId() + ': ' + feature.get('name');
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} else {
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info.innerHTML = ' ';
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}
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if (feature !== highlight) {
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if (highlight) {
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featureOverlay.getSource().removeFeature(highlight);
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}
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if (feature) {
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featureOverlay.getSource().addFeature(feature);
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}
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highlight = feature;
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}
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};
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map.on('pointermove', function(evt) {
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if (evt.dragging) {
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return;
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}
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var pixel = map.getEventPixel(evt.originalEvent);
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displayFeatureInfo(pixel);
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});
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map.on('click', function(evt) {
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displayFeatureInfo(evt.pixel);
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});
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