LayoutTests/fast/canvas/canvas-createImageBitmap-drawImage.html - Issue 19393004: Allow eviction of ImageBitmaps that are created from ImageElements.

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Issue 19393004: Allow eviction of ImageBitmaps that are created from ImageElements. (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Use CachedImage as the backing store for ImageBitmap. Implement O(1) decode cache. Created 7 years, 5 months 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="../js/resources/js-test-pre.js"></script>	4 <script src="../js/resources/js-test-pre.js"></script>

5 </head>	5 </head>

6 <body>	6 <body>

7 <script>	7 <script>

8	8

9 description("Ensure correct behavior of drawImage with ImageBitmaps.");	9 description("Ensure correct behavior of drawImage with ImageBitmaps.");

10 window.jsTestIsAsync = true;	10 window.jsTestIsAsync = true;

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90 var checks;	90 var checks;

91 var elements;	91 var elements;

92	92

93 // Create auxiliary canvas to draw to and create an image from.	93 // Create auxiliary canvas to draw to and create an image from.

94 var aCanvas = document.createElement("canvas");	94 var aCanvas = document.createElement("canvas");

95 aCanvas.setAttribute("width", "200");	95 aCanvas.setAttribute("width", "200");

96 aCanvas.setAttribute("height", "200");	96 aCanvas.setAttribute("height", "200");

97 var aCtx = aCanvas.getContext("2d");	97 var aCtx = aCanvas.getContext("2d");

98 drawPattern(aCtx);	98 drawPattern(aCtx);

99	99

	100 var bCanvas = document.createElement("canvas");

	101 bCanvas.setAttribute("width", "200");

	102 bCanvas.setAttribute("height", "200");

	103 var bCtx = bCanvas.getContext("2d");

	104 bCtx.fillStyle = 'red';

	105 bCtx.fillRect(0, 0, 200, 200);

	106

100 var canvas = document.createElement("canvas");	107 var canvas = document.createElement("canvas");

101 canvas.setAttribute("width", "500");	108 canvas.setAttribute("width", "500");

102 canvas.setAttribute("height", "500");	109 canvas.setAttribute("height", "500");

103 var ctx = canvas.getContext("2d");	110 var ctx = canvas.getContext("2d");

104	111

105 image = new Image();	112 image = new Image();

106 image.onload = imageLoaded;	113 image.onload = imageLoaded;

107 image.src = aCanvas.toDataURL(); // set a data URI of the base64 enconded image as the source	114 image.src = aCanvas.toDataURL(); // set a data URI of the base64 enconded image as the source

108	115

109 var imageLoaded = false;	116 var imageLoaded = false;

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381 shouldBeClear(110, 110);	388 shouldBeClear(110, 110);

382 shouldBeClear(210, 210);	389 shouldBeClear(210, 210);

383	390

384 commonCallback(imageBitmap);	391 commonCallback(imageBitmap);

385 }	392 }

386	393

387 function callbackImmutable(imageBitmap) {	394 function callbackImmutable(imageBitmap) {

388 // change the underlying element to ensure that it does not change the image Bitmap	395 // change the underlying element to ensure that it does not change the image Bitmap

389 switch(i) {	396 switch(i) {

390 case 0: // image	397 case 0: // image

391 image = new Image();	398 image.onload = function() { callbackNoCrop(imageBitmap); }

	399 image.src = bCanvas.toDataURL();

392 break;	400 break;

393 case 1: // canvas	401 case 1: // canvas

394 clearContext(aCtx);	402 clearContext(aCtx);

	403 callbackNoCrop(imageBitmap);

395 break;	404 break;

396 case 2: // data	405 case 2: // data

397 d = 0;	406 d = 0;

	407 callbackNoCrop(imageBitmap);

398 break;	408 break;

399 case 3: // context	409 case 3: // context

400 clearContext(aCtx);	410 clearContext(aCtx);

	411 callbackNoCrop(imageBitmap);

401 break;	412 break;

402 case 4: // bitmap	413 case 4: // bitmap

403 testBitmap = 0;	414 testBitmap = 0;

	415 callbackNoCrop(imageBitmap);

404 break;	416 break;

405 default:	417 default:

406 testFailed("Default should not be called.");	418 testFailed("Default should not be called.");

407 }	419 }

408 // should be drawn to (0, 0), (200, 200)

409 callbackNoCrop(imageBitmap);

410	420

411 // we potentially cleared our auxillary context, so redraw the image	421 // we potentially cleared our auxillary context, so redraw the image

412 drawPattern(aCtx);	422 drawPattern(aCtx);

413 }	423 }

414	424

415 function commonCallback(imageBitmap) {	425 function commonCallback(imageBitmap) {

416 bitmap = imageBitmap;	426 bitmap = imageBitmap;

417 shouldBeType("bitmap", "ImageBitmap");	427 shouldBeType("bitmap", "ImageBitmap");

418	428

419 callbackCount += 1;	429 callbackCount += 1;

420	430

421 if (callbackCount < elements.length * checks.length) {	431 if (callbackCount < elements.length * checks.length) {

422 ++j;	432 ++j;

423 if(j == checks.length) {	433 if(j == checks.length) {

424 // completed all the checks for the ith element	434 // completed all the checks for the ith element

425 j = 0;	435 j = 0;

426 ++i;	436 ++i;

427 }	437 }

428 nextCheck();	438 nextCheck();

429 } else {	439 } else {

430 finishJSTest();	440 finishJSTest();

431 }	441 }

432 }	442 }

433	443

434 </script>	444 </script>

435 <script src="../js/resources/js-test-post.js"></script>	445 <script src="../js/resources/js-test-post.js"></script>

436 </body>	446 </body>

437 </html>	447 </html>

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