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openlayers/test/browser/spec/ol/interaction/extent.test.js
2021-04-28 09:23:33 -07:00

141 lines
4.4 KiB
JavaScript

import ExtentInteraction from '../../../../../src/ol/interaction/Extent.js';
import Map from '../../../../../src/ol/Map.js';
import MapBrowserEvent from '../../../../../src/ol/MapBrowserEvent.js';
import View from '../../../../../src/ol/View.js';
describe('ol.interaction.Extent', function () {
let map, interaction;
const width = 360;
const height = 180;
beforeEach(function () {
const target = createMapDiv(width, height);
map = new Map({
target: target,
layers: [],
view: new View({
projection: 'EPSG:4326',
center: [0, 0],
resolution: 1,
}),
});
map.renderSync();
interaction = new ExtentInteraction();
map.addInteraction(interaction);
});
afterEach(function () {
if (map) {
disposeMap(map);
}
map = null;
interaction = null;
});
/**
* Simulates a browser event on the map viewport. The client x/y location
* will be adjusted as if the map were centered at 0,0.
* @param {string} type Event type.
* @param {number} x Horizontal offset from map center.
* @param {number} y Vertical offset from map center.
* @param {boolean} [opt_shiftKey] Shift key is pressed.
* @param {number} button The mouse button.
*/
function simulateEvent(type, x, y, opt_shiftKey, button) {
const viewport = map.getViewport();
// calculated in case body has top < 0 (test runner with small window)
const position = viewport.getBoundingClientRect();
const shiftKey = opt_shiftKey !== undefined ? opt_shiftKey : false;
const pointerEvent = {};
pointerEvent.type = type;
pointerEvent.target = viewport.firstChild;
pointerEvent.button = button;
pointerEvent.clientX = position.left + x + width / 2;
pointerEvent.clientY = position.top - y + height / 2;
pointerEvent.shiftKey = shiftKey;
pointerEvent.pointerId = 0;
pointerEvent.preventDefault = function () {};
const event = new MapBrowserEvent(type, map, pointerEvent);
event.originalEvent.pointerId = 1;
map.handleMapBrowserEvent(event);
}
describe('Constructor', function () {
it('can be configured with an extent', function () {
expect(function () {
new ExtentInteraction({
extent: [-10, -10, 10, 10],
});
}).to.not.throwException();
});
});
describe('snap to vertex', function () {
it('snap to vertex works', function () {
interaction.setExtent([-50, -50, 50, 50]);
expect(interaction.snapToVertex_([230, 40], map)).to.eql([50, 50]);
expect(interaction.snapToVertex_([231, 41], map)).to.eql([50, 50]);
});
it('snap to edge works', function () {
interaction.setExtent([-50, -50, 50, 50]);
expect(interaction.snapToVertex_([230, 90], map)).to.eql([50, 0]);
expect(interaction.snapToVertex_([230, 89], map)).to.eql([50, 1]);
expect(interaction.snapToVertex_([231, 90], map)).to.eql([50, 0]);
});
});
describe('draw extent', function () {
it('drawing extent works', function () {
simulateEvent('pointerdown', -50, -50, false, 0);
simulateEvent('pointerdrag', 50, 50, false, 0);
simulateEvent('pointerup', 50, 50, false, 0);
expect(interaction.getExtent()).to.eql([-50, -50, 50, 50]);
});
it('clicking off extent nulls extent', function () {
interaction.setExtent([-50, -50, 50, 50]);
simulateEvent('pointerdown', -10, -10, false, 0);
simulateEvent('pointerup', -10, -10, false, 0);
expect(interaction.getExtent()).to.equal(null);
});
it('clicking on extent does not null extent', function () {
interaction.setExtent([-50, -50, 50, 50]);
simulateEvent('pointerdown', 50, 50, false, 0);
simulateEvent('pointerup', 50, 50, false, 0);
expect(interaction.getExtent()).to.eql([-50, -50, 50, 50]);
});
it('snap and drag vertex works', function () {
interaction.setExtent([-50, -50, 50, 50]);
simulateEvent('pointerdown', 51, 49, false, 0);
simulateEvent('pointerdrag', -70, -40, false, 0);
simulateEvent('pointerup', -70, -40, false, 0);
expect(interaction.getExtent()).to.eql([-70, -50, -50, -40]);
});
it('snap and drag edge works', function () {
interaction.setExtent([-50, -50, 50, 50]);
simulateEvent('pointerdown', 51, 5, false, 0);
simulateEvent('pointerdrag', 20, -30, false, 0);
simulateEvent('pointerup', 20, -30, false, 0);
expect(interaction.getExtent()).to.eql([-50, -50, 20, 50]);
});
});
});