81 lines
2.1 KiB
JavaScript
81 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 {defaults as defaultControls, ScaleLine} from '../src/ol/control.js';
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import TileLayer from '../src/ol/layer/Tile.js';
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import OSM from '../src/ol/source/OSM.js';
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const unitsSelect = document.getElementById('units');
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const typeSelect = document.getElementById('type');
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const stepsSelect = document.getElementById('steps');
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const scaleTextCheckbox = document.getElementById('showScaleText');
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const showScaleTextDiv = document.getElementById('showScaleTextDiv');
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let scaleType = 'scaleline';
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let scaleBarSteps = 4;
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let scaleBarText = true;
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let control;
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function scaleControl() {
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if (scaleType === 'scaleline') {
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control = new ScaleLine({
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units: unitsSelect.value
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});
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return control;
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}
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control = new ScaleLine({
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units: unitsSelect.value,
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bar: true,
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steps: scaleBarSteps,
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text: scaleBarText,
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minWidth: 140
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});
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return control;
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}
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const map = new Map({
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controls: defaultControls().extend([
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scaleControl()
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]),
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layers: [
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new TileLayer({
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source: new OSM()
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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: 2
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})
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});
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function onChange() {
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control.setUnits(unitsSelect.value);
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}
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function onChangeType() {
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scaleType = typeSelect.value;
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if (typeSelect.value === 'scalebar') {
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stepsSelect.style.display = 'inline';
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showScaleTextDiv.style.display = 'inline';
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map.removeControl(control);
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map.addControl(scaleControl());
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} else {
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stepsSelect.style.display = 'none';
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showScaleTextDiv.style.display = 'none';
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map.removeControl(control);
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map.addControl(scaleControl());
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}
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}
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function onChangeSteps() {
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scaleBarSteps = parseInt(stepsSelect.value, 10);
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map.removeControl(control);
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map.addControl(scaleControl());
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}
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function onChangeScaleText() {
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scaleBarText = scaleTextCheckbox.checked;
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map.removeControl(control);
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map.addControl(scaleControl());
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}
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unitsSelect.addEventListener('change', onChange);
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typeSelect.addEventListener('change', onChangeType);
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stepsSelect.addEventListener('change', onChangeSteps);
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scaleTextCheckbox.addEventListener('change', onChangeScaleText);
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