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