125 lines
3.3 KiB
JavaScript
125 lines
3.3 KiB
JavaScript
goog.provide('ol.test.renderer.canvas.TileLayer');
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goog.require('ol.Map');
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goog.require('ol.View');
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goog.require('ol.transform');
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goog.require('ol.layer.Tile');
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goog.require('ol.renderer.Map');
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goog.require('ol.renderer.canvas.TileLayer');
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goog.require('ol.source.TileWMS');
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goog.require('ol.source.XYZ');
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describe('ol.renderer.canvas.TileLayer', function() {
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describe('#prepareFrame', function() {
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var map, target, source, tile;
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beforeEach(function(done) {
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target = document.createElement('div');
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target.style.width = '100px';
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target.style.height = '100px';
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document.body.appendChild(target);
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source = new ol.source.TileWMS({
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url: 'spec/ol/data/osm-0-0-0.png',
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params: {LAYERS: 'foo', TIME: '0'}
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});
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source.once('tileloadend', function(e) {
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tile = e.tile;
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done();
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});
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map = new ol.Map({
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target: target,
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layers: [new ol.layer.Tile({
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source: source
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})],
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view: new ol.View({
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zoom: 0,
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center: [0, 0]
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})
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});
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});
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afterEach(function() {
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map.setTarget(null);
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document.body.removeChild(target);
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});
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it('properly handles interim tiles', function() {
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var layer = map.getLayers().item(0);
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source.updateParams({TIME: '1'});
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map.renderSync();
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var tiles = map.getRenderer().getLayerRenderer(layer).renderedTiles;
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expect(tiles.length).to.be(1);
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expect(tiles[0]).to.equal(tile);
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});
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});
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describe('#composeFrame()', function() {
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var img = null;
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beforeEach(function(done) {
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img = new Image(1, 1);
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img.onload = function() {
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done();
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};
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img.src = 'data:image/gif;base64,' +
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'R0lGODlhAQABAPAAAP8AAP///yH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==';
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});
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afterEach(function() {
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img = null;
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});
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it('uses correct draw scale when rotating (HiDPI)', function() {
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var layer = new ol.layer.Tile({
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source: new ol.source.XYZ({
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tileSize: 1
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})
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});
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var renderer = new ol.renderer.canvas.TileLayer(layer);
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renderer.renderedTiles = [];
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var frameState = {
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viewHints: [],
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time: Date.now(),
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viewState: {
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center: [10, 5],
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projection: ol.proj.get('EPSG:3857'),
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resolution: 1,
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rotation: Math.PI
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},
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extent: [0, 0, 20, 10],
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size: [20, 10],
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pixelRatio: 2,
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coordinateToPixelTransform: ol.transform.create(),
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pixelToCoordinateTransform: ol.transform.create(),
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usedTiles: {},
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wantedTiles: {}
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};
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renderer.getImageTransform = function() {
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return ol.transform.create();
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};
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ol.renderer.Map.prototype.calculateMatrices2D(frameState);
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var layerState = layer.getLayerState();
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var canvas = document.createElement('canvas');
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canvas.width = 200;
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canvas.height = 100;
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var context = {
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canvas: canvas,
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drawImage: sinon.spy()
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};
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renderer.renderedTiles = [{
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getTileCoord: function() {
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return [0, 0, 0];
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},
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getImage: function() {
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return img;
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}
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}];
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renderer.prepareFrame(frameState, layerState);
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renderer.composeFrame(frameState, layerState, context);
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expect(context.drawImage.firstCall.args[0].width).to.be(17);
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});
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});
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});
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