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1 <!DOCTYPE html> | |
2 <!-- DO NOT EDIT! This test has been generated by tools/gentest.py. --> | |
3 <title>OffscreenCanvas test: 2d.drawImage.negativedir</title> | |
4 <script src="/resources/testharness.js"></script> | |
5 <script src="/resources/testharnessreport.js"></script> | |
6 <script src="/common/canvas-tests.js"></script> | |
7 | |
8 <h1>2d.drawImage.negativedir</h1> | |
9 <p class="desc">Negative dimensions do not affect the direction of the image</p> | |
10 | |
11 | |
12 <script> | |
13 var t = async_test("Negative dimensions do not affect the direction of the image
"); | |
14 t.step(function() { | |
15 | |
16 var offscreenCanvas = new OffscreenCanvas(100, 50); | |
17 var ctx = offscreenCanvas.getContext('2d'); | |
18 | |
19 ctx.fillStyle = '#f00'; | |
20 ctx.fillRect(0, 0, 100, 50); | |
21 var promise = new Promise(function(resolve, reject) { | |
22 var xhr = new XMLHttpRequest(); | |
23 xhr.open("GET", '/images/ggrr-256x256.png'); | |
24 xhr.responseType = 'blob'; | |
25 xhr.send(); | |
26 xhr.onload = function() { | |
27 resolve(xhr.response); | |
28 }; | |
29 }); | |
30 promise.then(function(response) { | |
31 ctx.drawImage(response, 0, 178, 50, -100, 0, 0, 50, 100); | |
32 ctx.drawImage(response, 0, 78, 50, 100, 50, 100, 50, -100); | |
33 _assertPixelApprox(offscreenCanvas, 1,1, 0,255,0,255, "1,1", "0,255,0,255",
2); | |
34 _assertPixelApprox(offscreenCanvas, 1,48, 0,255,0,255, "1,48", "0,255,0,255"
, 2); | |
35 _assertPixelApprox(offscreenCanvas, 98,1, 0,255,0,255, "98,1", "0,255,0,255"
, 2); | |
36 _assertPixelApprox(offscreenCanvas, 98,48, 0,255,0,255, "98,48", "0,255,0,25
5", 2); | |
37 _assertPixelApprox(offscreenCanvas, 48,1, 0,255,0,255, "48,1", "0,255,0,255"
, 2); | |
38 _assertPixelApprox(offscreenCanvas, 48,48, 0,255,0,255, "48,48", "0,255,0,25
5", 2); | |
39 _assertPixelApprox(offscreenCanvas, 51,1, 0,255,0,255, "51,1", "0,255,0,255"
, 2); | |
40 _assertPixelApprox(offscreenCanvas, 51,48, 0,255,0,255, "51,48", "0,255,0,25
5", 2); | |
41 _assertPixelApprox(offscreenCanvas, 25,25, 0,255,0,255, "25,25", "0,255,0,25
5", 2); | |
42 _assertPixelApprox(offscreenCanvas, 75,25, 0,255,0,255, "75,25", "0,255,0,25
5", 2); | |
43 }); | |
44 | |
45 t.done(); | |
46 | |
47 }); | |
48 </script> | |
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