| Index: LayoutTests/fast/canvas/canvas-createImageBitmap-recursive.html
|
| diff --git a/LayoutTests/fast/canvas/canvas-createImageBitmap-recursive.html b/LayoutTests/fast/canvas/canvas-createImageBitmap-recursive.html
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..8b4f3679739296e5467bb60a24e5068405484a3f
|
| --- /dev/null
|
| +++ b/LayoutTests/fast/canvas/canvas-createImageBitmap-recursive.html
|
| @@ -0,0 +1,152 @@
|
| +<html>
|
| +<head>
|
| +<script src="../js/resources/js-test-pre.js"></script>
|
| +</head>
|
| +<body>
|
| +<script>
|
| +description("Ensure correct behavior of drawImage with ImageBitmaps constructed from ImageBitmaps that are constructed from both images (not pinned to memory) and context (pinned to memory).");
|
| +
|
| +window.jsTestIsAsync = true;
|
| +
|
| +function shouldBeGreen(x, y) {
|
| + d = ctx.getImageData(x, y, 1, 1).data;
|
| + shouldBeTrue("d[0] == 0");
|
| + shouldBeTrue("d[1] == 255");
|
| + shouldBeTrue("d[2] == 0");
|
| + shouldBeTrue("d[3] == 255");
|
| +}
|
| +function shouldBeClear(x, y) {
|
| + // should be transparent black pixels
|
| + d = ctx.getImageData(x, y, 1, 1).data;
|
| + shouldBeTrue("d[0] == 0");
|
| + shouldBeTrue("d[1] == 0");
|
| + shouldBeTrue("d[2] == 0");
|
| + shouldBeTrue("d[3] == 0");
|
| +}
|
| +function clearContext(context) {
|
| + context.clearRect(0, 0, 50, 50);
|
| +}
|
| +
|
| +var image;
|
| +
|
| +var imageWidth = 20;
|
| +var imageHeight = 20;
|
| +
|
| +var aCanvas = document.createElement("canvas");
|
| +aCanvas.width = imageWidth;
|
| +aCanvas.height = imageHeight;
|
| +var aCtx = aCanvas.getContext("2d");
|
| +aCtx.fillStyle = 'rgb(0, 255, 0)';
|
| +aCtx.fillRect(0, 0, 20, 20);
|
| +
|
| +var canvas = document.createElement("canvas");
|
| +canvas.setAttribute("width", "50");
|
| +canvas.setAttribute("height", "50");
|
| +var ctx = canvas.getContext("2d");
|
| +
|
| +image = new Image();
|
| +image.onload = imageLoaded;
|
| +image.src = aCanvas.toDataURL();
|
| +
|
| +var imageLoaded = false;
|
| +
|
| +function imageLoaded() {
|
| + createImageBitmap(image, imageBitmapLoadedCallback, -10, -10, 20, 20);
|
| + imageLoaded = true;
|
| +}
|
| +
|
| +var i;
|
| +
|
| +function imageBitmapLoadedCallback(imageBitmap) {
|
| + i = 0;
|
| + bitmap = imageBitmap;
|
| + check(i);
|
| +}
|
| +
|
| +function imageBitmapLoadedCallback2(imageBitmap) {
|
| + ++i;
|
| + bitmap = imageBitmap;
|
| + check(i);
|
| +}
|
| +
|
| +function check(num) {
|
| + switch(num) {
|
| + case 0:
|
| + createImageBitmap(bitmap, checkCallback(10, 10, 10, 10));
|
| + break;
|
| + case 1:
|
| + createImageBitmap(bitmap, checkCallback(20, 20, 10, 10), -10, -10, 30, 30);
|
| + break;
|
| + case 2:
|
| + createImageBitmap(bitmap, checkCallback(0, 0, 10, 10), 10, 10, 20, 20);
|
| + break;
|
| + case 3:
|
| + createImageBitmap(aCtx, imageBitmapLoadedCallback2, 10, 10, 20, 20);
|
| + break;
|
| + case 4:
|
| + createImageBitmap(bitmap, checkCallback(0, 0, 10, 10));
|
| + break;
|
| + case 5:
|
| + createImageBitmap(bitmap, checkCallback(15, 10, 10, 10), -15, -10, 35, 40);
|
| + break;
|
| + case 6:
|
| + createImageBitmap(bitmap, checkCallback(0, 0, 5, 5), 5, 5, 10, 10);
|
| + break;
|
| + default:
|
| + finishJSTest();
|
| + break;
|
| + }
|
| +}
|
| +
|
| +function shouldBeFilled(x, y, w, h) {
|
| + shouldBeGreen(x+2, y+2);
|
| + shouldBeGreen(x+w-2, y+h-2);
|
| + shouldBeGreen(x+w/2, y+h/2);
|
| + shouldBeClear(x-2, y-2);
|
| + shouldBeClear(x+w+2, y+h+2);
|
| +}
|
| +
|
| +function checkCallback(x, y, w, h) {
|
| + // x, y, w, h are the expected location of the green square
|
| + var x1 = x;
|
| + var y1 = y;
|
| + var w1 = w;
|
| + var h1 = h;
|
| + return function(imageBitmap) {
|
| + clearContext(ctx);
|
| + ctx.drawImage(imageBitmap, 0, 0);
|
| + shouldBeFilled(x1, y1, w1, h1);
|
| +
|
| + clearContext(ctx);
|
| + ctx.drawImage(imageBitmap, 10, 10, 40, 40);
|
| + // scale up w and h as necessary
|
| + var w2 = w1 * 40.0 / imageBitmap.width;
|
| + var h2 = h1 * 40.0 / imageBitmap.height;
|
| + // x and y are transformed
|
| + var x2 = x1 * w2 / w1 + 10;
|
| + var y2 = y1 * h2 / h1 + 10;
|
| + shouldBeFilled(x2, y2, w2, h2);
|
| +
|
| + clearContext(ctx);
|
| + ctx.drawImage(imageBitmap, 0, 0, 50, 50);
|
| + // scale up w and h as necessary
|
| + var w3 = w1 * 50.0 / imageBitmap.width;
|
| + var h3 = h1 * 50.0 / imageBitmap.height;
|
| + // x and y are transformed
|
| + var x3 = x1 * w3 / w1;
|
| + var y3 = y1 * h3 / h1;
|
| + shouldBeFilled(x3, y3, w3, h3);
|
| +
|
| + clearContext(ctx);
|
| + ctx.drawImage(imageBitmap, x1, y1, w1, h1, 0, 0, 50, 50);
|
| + shouldBeFilled(0, 0, 50, 50);
|
| +
|
| + ++i;
|
| + check(i);
|
| + }
|
| +}
|
| +
|
| +</script>
|
| +<script src="../js/resources/js-test-post.js"></script>
|
| +</body>
|
| +</html>
|
|
|
Chromium Code Reviews
Issue 19393004:
Allow eviction of ImageBitmaps that are created from ImageElements. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk