320 lines
9.6 KiB
JavaScript
320 lines
9.6 KiB
JavaScript
import Feature from '../../../../../src/ol/Feature.js';
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import Map from '../../../../../src/ol/Map.js';
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import View from '../../../../../src/ol/View.js';
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import {buffer as bufferExtent, getWidth} from '../../../../../src/ol/extent.js';
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import Point from '../../../../../src/ol/geom/Point.js';
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import VectorLayer from '../../../../../src/ol/layer/Vector.js';
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import {clear} from '../../../../../src/ol/obj.js';
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import {get as getProjection} from '../../../../../src/ol/proj.js';
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import {checkedFonts} from '../../../../../src/ol/render/canvas.js';
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import CanvasVectorLayerRenderer from '../../../../../src/ol/renderer/canvas/VectorLayer.js';
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import VectorSource from '../../../../../src/ol/source/Vector.js';
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import Style from '../../../../../src/ol/style/Style.js';
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import Text from '../../../../../src/ol/style/Text.js';
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describe('ol.renderer.canvas.VectorLayer', function() {
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describe('constructor', function() {
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const head = document.getElementsByTagName('head')[0];
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const font = document.createElement('link');
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font.href = 'https://fonts.googleapis.com/css?family=Droid+Sans';
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font.rel = 'stylesheet';
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let target;
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beforeEach(function() {
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target = document.createElement('div');
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target.style.width = '256px';
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target.style.height = '256px';
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document.body.appendChild(target);
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});
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afterEach(function() {
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document.body.removeChild(target);
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});
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it('creates a new instance', function() {
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const layer = new VectorLayer({
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source: new VectorSource()
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});
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const renderer = new CanvasVectorLayerRenderer(layer);
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expect(renderer).to.be.a(CanvasVectorLayerRenderer);
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});
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it('gives precedence to feature styles over layer styles', function() {
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const target = document.createElement('div');
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target.style.width = '256px';
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target.style.height = '256px';
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document.body.appendChild(target);
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const map = new Map({
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view: new View({
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center: [0, 0],
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zoom: 0
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}),
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target: target
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});
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const layerStyle = [new Style({
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text: new Text({
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text: 'layer'
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})
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})];
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const featureStyle = [new Style({
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text: new Text({
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text: 'feature'
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})
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})];
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const feature1 = new Feature(new Point([0, 0]));
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const feature2 = new Feature(new Point([0, 0]));
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feature2.setStyle(featureStyle);
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const layer = new VectorLayer({
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source: new VectorSource({
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features: [feature1, feature2]
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}),
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style: layerStyle
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});
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map.addLayer(layer);
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const spy = sinon.spy(layer.getRenderer(),
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'renderFeature');
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map.renderSync();
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expect(spy.getCall(0).args[3]).to.be(layerStyle);
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expect(spy.getCall(1).args[3]).to.be(featureStyle);
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document.body.removeChild(target);
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});
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it('does not re-render for unavailable fonts', function(done) {
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clear(checkedFonts);
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const map = new Map({
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view: new View({
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center: [0, 0],
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zoom: 0
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}),
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target: target
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});
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const layerStyle = new Style({
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text: new Text({
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text: 'layer',
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font: '12px "Unavailable Font",sans-serif'
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})
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});
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const feature = new Feature(new Point([0, 0]));
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const layer = new VectorLayer({
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source: new VectorSource({
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features: [feature]
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}),
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style: layerStyle
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});
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map.addLayer(layer);
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const revision = layer.getRevision();
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setTimeout(function() {
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expect(layer.getRevision()).to.be(revision);
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done();
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}, 800);
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});
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it('does not re-render for available fonts', function(done) {
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clear(checkedFonts);
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const map = new Map({
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view: new View({
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center: [0, 0],
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zoom: 0
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}),
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target: target
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});
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const layerStyle = new Style({
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text: new Text({
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text: 'layer',
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font: '12px sans-serif'
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})
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});
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const feature = new Feature(new Point([0, 0]));
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const layer = new VectorLayer({
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source: new VectorSource({
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features: [feature]
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}),
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style: layerStyle
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});
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map.addLayer(layer);
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const revision = layer.getRevision();
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setTimeout(function() {
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expect(layer.getRevision()).to.be(revision);
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done();
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}, 800);
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});
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it('re-renders for fonts that become available', function(done) {
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clear(checkedFonts);
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head.appendChild(font);
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const map = new Map({
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view: new View({
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center: [0, 0],
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zoom: 0
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}),
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target: target
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});
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const layerStyle = new Style({
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text: new Text({
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text: 'layer',
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font: '12px "Droid Sans",sans-serif'
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})
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});
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const feature = new Feature(new Point([0, 0]));
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const layer = new VectorLayer({
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source: new VectorSource({
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features: [feature]
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}),
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style: layerStyle
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});
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map.addLayer(layer);
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const revision = layer.getRevision();
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setTimeout(function() {
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expect(layer.getRevision()).to.be(revision + 1);
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head.removeChild(font);
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done();
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}, 1600);
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});
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});
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describe('#forEachFeatureAtCoordinate', function() {
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let layer, renderer;
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beforeEach(function() {
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layer = new VectorLayer({
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source: new VectorSource()
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});
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renderer = new CanvasVectorLayerRenderer(layer);
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const replayGroup = {};
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renderer.replayGroup_ = replayGroup;
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replayGroup.forEachFeatureAtCoordinate = function(coordinate,
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resolution, rotation, hitTolerance, skippedFeaturesUids, callback) {
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const feature = new Feature();
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callback(feature);
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callback(feature);
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};
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});
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it('calls callback once per feature with a layer as 2nd arg', function() {
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const spy = sinon.spy();
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const coordinate = [0, 0];
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const frameState = {
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layerStatesArray: [{}],
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skippedFeatureUids: {},
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viewState: {
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resolution: 1,
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rotation: 0
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}
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};
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renderer.forEachFeatureAtCoordinate(
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coordinate, frameState, 0, spy, undefined);
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expect(spy.callCount).to.be(1);
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expect(spy.getCall(0).args[1]).to.equal(layer);
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});
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});
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describe('#prepareFrame and #compose', function() {
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let frameState, projExtent, renderer, worldWidth, buffer;
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beforeEach(function() {
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const layer = new VectorLayer({
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source: new VectorSource({wrapX: true})
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});
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renderer = new CanvasVectorLayerRenderer(layer);
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const projection = getProjection('EPSG:3857');
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projExtent = projection.getExtent();
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worldWidth = getWidth(projExtent);
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buffer = layer.getRenderBuffer();
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frameState = {
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skippedFeatureUids: {},
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viewHints: [],
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viewState: {
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projection: projection,
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resolution: 1,
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rotation: 0
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}
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};
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});
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it('sets correct extent for small viewport near dateline', function() {
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frameState.extent =
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[projExtent[0] - 10000, -10000, projExtent[0] + 10000, 10000];
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renderer.prepareFrame(frameState);
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expect(renderer.replayGroup_.maxExtent_).to.eql(bufferExtent([
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projExtent[0] - worldWidth + buffer,
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-10000, projExtent[2] + worldWidth - buffer, 10000
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], buffer));
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});
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it('sets correct extent for viewport less than 1 world wide', function() {
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frameState.extent =
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[projExtent[0] - 10000, -10000, projExtent[1] - 10000, 10000];
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renderer.prepareFrame(frameState);
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expect(renderer.replayGroup_.maxExtent_).to.eql(bufferExtent([
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projExtent[0] - worldWidth + buffer,
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-10000, projExtent[2] + worldWidth - buffer, 10000
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], buffer));
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});
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it('sets correct extent for viewport more than 1 world wide', function() {
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frameState.extent =
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[2 * projExtent[0] - 10000, -10000, 2 * projExtent[1] + 10000, 10000];
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renderer.prepareFrame(frameState);
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expect(renderer.replayGroup_.maxExtent_).to.eql(bufferExtent([
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projExtent[0] - worldWidth + buffer,
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-10000, projExtent[2] + worldWidth - buffer, 10000
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], buffer));
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});
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it('sets correct extent for viewport more than 2 worlds wide', function() {
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frameState.extent = [
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projExtent[0] - 2 * worldWidth - 10000,
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-10000, projExtent[1] + 2 * worldWidth + 10000, 10000
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];
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renderer.prepareFrame(frameState);
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expect(renderer.replayGroup_.maxExtent_).to.eql(bufferExtent([
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projExtent[0] - 2 * worldWidth - 10000,
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-10000, projExtent[2] + 2 * worldWidth + 10000, 10000
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], buffer));
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});
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it('sets replayGroupChanged correctly', function() {
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frameState.extent = [-10000, -10000, 10000, 10000];
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renderer.prepareFrame(frameState);
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expect(renderer.replayGroupChanged).to.be(true);
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renderer.prepareFrame(frameState);
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expect(renderer.replayGroupChanged).to.be(false);
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});
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it('dispatches a postrender event when rendering', function(done) {
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const layer = renderer.getLayer();
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layer.getSource().addFeature(new Feature(new Point([0, 0])));
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layer.once('postrender', function() {
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expect(true);
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done();
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});
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frameState.layerStatesArray = [layer.getLayerState()];
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frameState.layerIndex = 0;
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frameState.extent = [-10000, -10000, 10000, 10000];
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frameState.size = [100, 100];
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frameState.viewState.center = [0, 0];
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let rendered = false;
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if (renderer.prepareFrame(frameState)) {
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rendered = true;
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renderer.renderFrame(frameState, null);
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}
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expect(rendered).to.be(true);
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});
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});
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});
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