37 lines
1.4 KiB
JavaScript
37 lines
1.4 KiB
JavaScript
import {equals} from '../../../src/ol/array.js';
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import _ol_has_ from '../../../src/ol/has.js';
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import {toContext} from '../../../src/ol/render.js';
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import CanvasImmediateRenderer from '../../../src/ol/render/canvas/Immediate.js';
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import _ol_transform_ from '../../../src/ol/transform.js';
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describe('ol.render', function() {
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describe('toContext', function() {
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it('creates an ol.render.canvas.Immediate and sets defaults', function() {
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const canvas = document.createElement('canvas');
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const render = toContext(canvas.getContext('2d'));
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expect(render).to.be.a(CanvasImmediateRenderer);
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expect(render.pixelRatio_).to.be(_ol_has_.DEVICE_PIXEL_RATIO);
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});
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it('sets size and pixel ratio from options', function() {
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const canvas = document.createElement('canvas');
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const pixelRatio = 1.5;
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const size = [100, 50];
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const render = toContext(canvas.getContext('2d'),
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{pixelRatio: pixelRatio, size: size});
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expect(render.pixelRatio_).to.be(pixelRatio);
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expect(render.extent_).to.eql(
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[0, 0, size[0] * pixelRatio, size[1] * pixelRatio]);
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expect(canvas.style.width).to.be(size[0] + 'px');
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expect(canvas.style.height).to.be(size[1] + 'px');
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const transform = _ol_transform_.scale(_ol_transform_.create(),
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pixelRatio, pixelRatio);
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expect(equals(render.transform_, transform)).to.be.ok();
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});
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});
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});
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