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44 lines
1.8 KiB
JavaScript
44 lines
1.8 KiB
JavaScript
// DO NOT EDIT! This test has been generated by tools/gentest.py.
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// OffscreenCanvas test in a worker:2d.drawImage.negativedest
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// Description:Negative destination width/height represents the correct rectangle
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// Note:
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importScripts("/resources/testharness.js");
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importScripts("/common/canvas-tests.js");
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var t = async_test("Negative destination width/height represents the correct rectangle");
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t.step(function() {
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var offscreenCanvas = new OffscreenCanvas(100, 50);
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var ctx = offscreenCanvas.getContext('2d');
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ctx.fillStyle = '#f00';
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ctx.fillRect(0, 0, 100, 50);
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var promise = new Promise(function(resolve, reject) {
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var xhr = new XMLHttpRequest();
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xhr.open("GET", '/images/ggrr-256x256.png');
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xhr.responseType = 'blob';
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xhr.send();
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xhr.onload = function() {
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resolve(xhr.response);
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};
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});
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promise.then(function(response) {
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ctx.drawImage(response, 100, 78, 50, 50, 0, 50, 50, -50);
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ctx.drawImage(response, 100, 128, 50, -50, 100, 50, -50, -50);
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_assertPixelApprox(offscreenCanvas, 1,1, 0,255,0,255, "1,1", "0,255,0,255", 2);
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_assertPixelApprox(offscreenCanvas, 1,48, 0,255,0,255, "1,48", "0,255,0,255", 2);
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_assertPixelApprox(offscreenCanvas, 98,1, 0,255,0,255, "98,1", "0,255,0,255", 2);
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_assertPixelApprox(offscreenCanvas, 98,48, 0,255,0,255, "98,48", "0,255,0,255", 2);
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_assertPixelApprox(offscreenCanvas, 48,1, 0,255,0,255, "48,1", "0,255,0,255", 2);
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_assertPixelApprox(offscreenCanvas, 48,48, 0,255,0,255, "48,48", "0,255,0,255", 2);
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_assertPixelApprox(offscreenCanvas, 51,1, 0,255,0,255, "51,1", "0,255,0,255", 2);
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_assertPixelApprox(offscreenCanvas, 51,48, 0,255,0,255, "51,48", "0,255,0,255", 2);
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_assertPixelApprox(offscreenCanvas, 25,25, 0,255,0,255, "25,25", "0,255,0,255", 2);
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_assertPixelApprox(offscreenCanvas, 75,25, 0,255,0,255, "75,25", "0,255,0,255", 2);
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});
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t.done();
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});
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done();
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