third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-transferControlToOffscreen.html - Issue 2508943003: Make OffscreenCanvas resizeable

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Issue 2508943003: Make OffscreenCanvas resizeable (Closed)

Patch Set: Created 4 years, 1 month ago

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1 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">	1 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">

2 <html>	2 <html>

3 <head>	3 <head>

4 <script src="../../resources/testharness.js"></script>	4 <script src="../../resources/testharness.js"></script>

5 <script src="../../resources/testharnessreport.js"></script>	5 <script src="../../resources/testharnessreport.js"></script>

6 </head>	6 </head>

7 <body>	7 <body>

8 <script>	8 <script>

9 function createCanvas(width, height) {	9 function createCanvas(width, height) {

10 var canvas = document.createElement("canvas");	10 var canvas = document.createElement("canvas");

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37 }, "transferControlToOffscreen from a canvas with context throws an exceptio n");	37 }, "transferControlToOffscreen from a canvas with context throws an exceptio n");

38	38

39 var canvas2b = createCanvas(10, 10);	39 var canvas2b = createCanvas(10, 10);

40 var offscreenCanvas2b = canvas2b.transferControlToOffscreen();	40 var offscreenCanvas2b = canvas2b.transferControlToOffscreen();

41 assert_throws("InvalidStateError", function() {	41 assert_throws("InvalidStateError", function() {

42 var anotherOffscreenCanvas = canvas2b.transferControlToOffscreen();	42 var anotherOffscreenCanvas = canvas2b.transferControlToOffscreen();

43 }, "canvas.transferControlToOffscreen() is not allowed to called more than o nce for the same canvas.");	43 }, "canvas.transferControlToOffscreen() is not allowed to called more than o nce for the same canvas.");

44 }, "Tests whether transferControlToOffscreen throws exception correctly.");	44 }, "Tests whether transferControlToOffscreen throws exception correctly.");

45	45

46 test(function() {	46 test(function() {

47 var canvas3 = createCanvas(10, 10);

48 var offscreenCanvas3 = canvas3.transferControlToOffscreen();

49 assert_equals(offscreenCanvas3.width, 10);

50 assert_equals(offscreenCanvas3.height, 10);

51 assert_throws("InvalidStateError", function() { offscreenCanvas3.width = 20; });

52 assert_throws("InvalidStateError", function() { offscreenCanvas3.height = 20 ; });

53 }, "Test if resizing on offscreencanvas transferred from html canvas has thrown exceptions.");

54

55 test(function() {

56 var canvas4 = createCanvas(10, 10);	47 var canvas4 = createCanvas(10, 10);

57 var offscreenCanvas4 = canvas4.transferControlToOffscreen();	48 var offscreenCanvas4 = canvas4.transferControlToOffscreen();

58 assert_throws("InvalidStateError", function() {	49 assert_throws("InvalidStateError", function() {

59 canvas4.getContext("2d");	50 canvas4.getContext("2d");

60 }, "canvas.getContext() is not allowed after transferring control to offscre en.");	51 }, "canvas.getContext() is not allowed after transferring control to offscre en.");

61 assert_throws("InvalidStateError", function() {	52 assert_throws("InvalidStateError", function() {

62 canvas4.height = 20;	53 canvas4.height = 20;

63 }, "canvas resizing height is not allowed after transferring control to offs creen.");	54 }, "canvas resizing height is not allowed after transferring control to offs creen.");

64 assert_throws("InvalidStateError", function() {	55 assert_throws("InvalidStateError", function() {

65 canvas4.width = 20;	56 canvas4.width = 20;

66 }, "canvas resizing width is not allowed after transferring control to offsc reen.");	57 }, "canvas resizing width is not allowed after transferring control to offsc reen.");

67 }, "Test if modifying canvas after it transfers controls to offscreen throw exce ptions");	58 }, "Test if modifying canvas after it transfers controls to offscreen throw exce ptions");

68	59

69 </script>	60 </script>

70 </body>	61 </body>

71 </html>	62 </html>

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