WebKit export of https://bugs.webkit.org/show_bug.cgi?id=231063 (#31287)
diff --git a/html/canvas/element/manual/imagebitmap/createImageBitmap-exif-orientation.html b/html/canvas/element/manual/imagebitmap/createImageBitmap-exif-orientation.html
new file mode 100644
index 0000000..95d13d3
--- /dev/null
+++ b/html/canvas/element/manual/imagebitmap/createImageBitmap-exif-orientation.html
@@ -0,0 +1,121 @@
+<!DOCTYPE html>
+<title>Test that createImageBitmap honors EXIF orientation</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>canvas { outline: 1px solid black; margin-right: 1em; }</style>
+<body>
+<script>
+function loadImage(src) {
+ return new Promise(function(resolve) {
+ const image = new Image();
+ image.addEventListener("load", () => resolve(image), { once: true });
+ image.src = src;
+ });
+}
+
+function checkColors(ctx, w, h, expectedColors) {
+ let data = ctx.getImageData(0, 0, w, h).data;
+ for (let [row, col, r, g, b, a] of expectedColors) {
+ let x = col * 80 + 40;
+ let y = row * 80 + 40;
+ let i = (x + y * w) * 4;
+
+ let expected = [r, g, b, a];
+ let actual = [data[i], data[i + 1], data[i + 2], data[i + 3]];
+
+ assert_array_approx_equals(actual, expected, 1, `Pixel value at (${x},${y}) ${expected} =~ ${actual}.`);
+ }
+}
+
+async_test(function(t) {
+ const canvas = document.createElement("canvas");
+ canvas.width = 320;
+ canvas.height = 160;
+ document.body.append(canvas);
+
+ const ctx = canvas.getContext("2d");
+ loadImage("resources/squares.jpg")
+ .then((image) => createImageBitmap(image))
+ .then(t.step_func_done(function(imageBitmap) {
+ ctx.drawImage(imageBitmap, 0, 0);
+ checkColors(ctx, canvas.width, canvas.height, [
+ // row, col, r, g, b, a
+ [0, 0, 255, 0, 0, 255],
+ [0, 1, 0, 255, 0, 255],
+ [0, 2, 0, 0, 255, 255],
+ [0, 3, 0, 0, 0, 255],
+ [1, 0, 255, 128, 128, 255],
+ [1, 1, 128, 255, 128, 255],
+ [1, 2, 128, 128, 255, 255],
+ [1, 3, 128, 128, 128, 255],
+ ]);
+ }));
+}, "createImageBitmap with EXIF rotation, imageOrientation none, and no cropping");
+
+async_test(function(t) {
+ const canvas = document.createElement("canvas");
+ canvas.width = 320;
+ canvas.height = 160;
+ document.body.append(canvas);
+
+ const ctx = canvas.getContext("2d");
+ loadImage("resources/squares.jpg")
+ .then((image) => createImageBitmap(image, { imageOrientation: "flipY" }))
+ .then(t.step_func_done(function(imageBitmap) {
+ ctx.drawImage(imageBitmap, 0, 0);
+ checkColors(ctx, canvas.width, canvas.height, [
+ // row, col, r, g, b, a
+ [0, 0, 255, 128, 128, 255],
+ [0, 1, 128, 255, 128, 255],
+ [0, 2, 128, 128, 255, 255],
+ [0, 3, 128, 128, 128, 255],
+ [1, 0, 255, 0, 0, 255],
+ [1, 1, 0, 255, 0, 255],
+ [1, 2, 0, 0, 255, 255],
+ [1, 3, 0, 0, 0, 255],
+ ]);
+ }));
+}, "createImageBitmap with EXIF rotation, imageOrientation flipY, and no cropping");
+
+async_test(function(t) {
+ const canvas = document.createElement("canvas");
+ canvas.width = 160;
+ canvas.height = 160;
+ document.body.append(canvas);
+
+ const ctx = canvas.getContext("2d");
+ loadImage("resources/squares.jpg")
+ .then(image => createImageBitmap(image, 80, 0, 160, 160))
+ .then(t.step_func_done(function(imageBitmap) {
+ ctx.drawImage(imageBitmap, 0, 0);
+ checkColors(ctx, canvas.width, canvas.height, [
+ // row, col, r, g, b, a
+ [0, 0, 0, 255, 0, 255],
+ [0, 1, 0, 0, 255, 255],
+ [1, 0, 128, 255, 128, 255],
+ [1, 1, 128, 128, 255, 255],
+ ]);
+ }));
+}, "createImageBitmap with EXIF rotation, imageOrientation none, and cropping");
+
+async_test(function(t) {
+ const canvas = document.createElement("canvas");
+ canvas.width = 160;
+ canvas.height = 160;
+ document.body.append(canvas);
+
+ const ctx = canvas.getContext("2d");
+ loadImage("resources/squares.jpg")
+ .then(image => createImageBitmap(image, 80, 0, 160, 160, { imageOrientation: "flipY" }))
+ .then(t.step_func_done(function(imageBitmap) {
+ ctx.drawImage(imageBitmap, 0, 0);
+ checkColors(ctx, canvas.width, canvas.height, [
+ // row, col, r, g, b, a
+ [0, 0, 128, 255, 128, 255],
+ [0, 1, 128, 128, 255, 255],
+ [1, 0, 0, 255, 0, 255],
+ [1, 1, 0, 0, 255, 255],
+ ]);
+ }));
+}, "createImageBitmap with EXIF rotation, imageOrientation flipY, and cropping");
+</script>
diff --git a/html/canvas/element/manual/imagebitmap/resources/squares.jpg b/html/canvas/element/manual/imagebitmap/resources/squares.jpg
new file mode 100644
index 0000000..f197760
--- /dev/null
+++ b/html/canvas/element/manual/imagebitmap/resources/squares.jpg
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