100 lines
2.1 KiB
JavaScript
100 lines
2.1 KiB
JavaScript
goog.require('ol.Map');
|
|
goog.require('ol.RendererHint');
|
|
goog.require('ol.View2D');
|
|
goog.require('ol.layer.Tile');
|
|
goog.require('ol.layer.Vector');
|
|
goog.require('ol.render.FeaturesOverlay');
|
|
goog.require('ol.source.GeoJSON');
|
|
goog.require('ol.source.MapQuestOpenAerial');
|
|
goog.require('ol.style.Fill');
|
|
goog.require('ol.style.Stroke');
|
|
goog.require('ol.style.Style');
|
|
|
|
|
|
var styleArray = [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
|
|
})
|
|
})];
|
|
|
|
var vectorLayer = new ol.layer.Vector({
|
|
source: new ol.source.GeoJSON({
|
|
url: 'data/countries.geojson'
|
|
}),
|
|
styleFunction: function(feature, resolution) {
|
|
return styleArray;
|
|
}
|
|
});
|
|
|
|
var map = new ol.Map({
|
|
layers: [
|
|
new ol.layer.Tile({
|
|
source: new ol.source.MapQuestOpenAerial()
|
|
}),
|
|
vectorLayer
|
|
],
|
|
renderer: ol.RendererHint.CANVAS,
|
|
target: 'map',
|
|
view: new ol.View2D({
|
|
center: [0, 0],
|
|
zoom: 1
|
|
})
|
|
});
|
|
|
|
var highlightStyleArray = [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 featuresOverlay = new ol.render.FeaturesOverlay({
|
|
map: map,
|
|
styleFunction: function(feature, resolution) {
|
|
return highlightStyleArray;
|
|
}
|
|
});
|
|
|
|
var highlight;
|
|
var displayFeatureInfo = function(pixel) {
|
|
|
|
var feature = map.forEachFeatureAtPixel(pixel, function(feature, layer) {
|
|
return feature;
|
|
});
|
|
|
|
var info = document.getElementById('info');
|
|
if (feature) {
|
|
info.innerHTML = feature.getId() + ': ' + feature.get('name');
|
|
} else {
|
|
info.innerHTML = ' ';
|
|
}
|
|
|
|
if (feature !== highlight) {
|
|
if (highlight) {
|
|
featuresOverlay.removeFeature(highlight);
|
|
}
|
|
if (feature) {
|
|
featuresOverlay.addFeature(feature);
|
|
}
|
|
highlight = feature;
|
|
}
|
|
|
|
};
|
|
|
|
$(map.getViewport()).on('mousemove', function(evt) {
|
|
var pixel = map.getEventPixel(evt.originalEvent);
|
|
displayFeatureInfo(pixel);
|
|
});
|
|
|
|
map.on('singleclick', function(evt) {
|
|
var pixel = evt.getPixel();
|
|
displayFeatureInfo(pixel);
|
|
});
|