Files
openlayers/examples/extent-interaction.js
2017-12-17 01:42:56 -07:00

49 lines
1.3 KiB
JavaScript

import _ol_Map_ from '../src/ol/Map.js';
import _ol_View_ from '../src/ol/View.js';
import _ol_events_condition_ from '../src/ol/events/condition.js';
import GeoJSON from '../src/ol/format/GeoJSON.js';
import _ol_interaction_Extent_ from '../src/ol/interaction/Extent.js';
import _ol_layer_Tile_ from '../src/ol/layer/Tile.js';
import _ol_layer_Vector_ from '../src/ol/layer/Vector.js';
import _ol_source_OSM_ from '../src/ol/source/OSM.js';
import _ol_source_Vector_ from '../src/ol/source/Vector.js';
var vectorSource = new _ol_source_Vector_({
url: 'data/geojson/countries.geojson',
format: new GeoJSON()
});
var map = new _ol_Map_({
layers: [
new _ol_layer_Tile_({
source: new _ol_source_OSM_()
}),
new _ol_layer_Vector_({
source: vectorSource
})
],
target: 'map',
view: new _ol_View_({
center: [0, 0],
zoom: 2
})
});
var extent = new _ol_interaction_Extent_({
condition: _ol_events_condition_.platformModifierKeyOnly
});
map.addInteraction(extent);
extent.setActive(false);
//Enable interaction by holding shift
this.addEventListener('keydown', function(event) {
if (event.keyCode == 16) {
extent.setActive(true);
}
});
this.addEventListener('keyup', function(event) {
if (event.keyCode == 16) {
extent.setActive(false);
}
});