LibWeb: Add initial support for HTMLImageElement in createImageBitmap
Idan Horowitz
Jelle Raaijmakers
Author: https://github.com/IdanHo Commit: https://github.com/LadybirdBrowser/ladybird/commit/3b8ccf4d77d Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5695 Reviewed-by: https://github.com/gmta ✅
@@ -0,0 +1,61 @@
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<!DOCTYPE html>
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<title>Test that createImageBitmap honors EXIF orientation</title>
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<script src="../../../../../resources/testharness.js"></script>
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<script src="../../../../../resources/testharnessreport.js"></script>
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<style>canvas { outline: 1px solid black; margin-right: 1em; }</style>
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<body>
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<script>
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function loadImage(src) {
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return new Promise(function(resolve) {
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const image = new Image();
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image.addEventListener("load", () => resolve(image), { once: true });
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image.src = src;
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});
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}
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function checkColors(ctx, w, h, is_verticle, expectedColors) {
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let data = ctx.getImageData(0, 0, w, h).data;
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row_width = 80;
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col_width = 80;
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for (let [row, col, r, g, b, a] of expectedColors) {
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let x = col * row_width + 10;
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let y = row * col_width + 10;
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let i = (x + y * w) * 4;
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let expected = [r, g, b, a];
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let actual = [data[i], data[i + 1], data[i + 2], data[i + 3]];
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assert_array_approx_equals(actual, expected, 1, `Pixel value at (${x},${y}) ${expected} =~ ${actual}.`);
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}
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}
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for (let orientation of [1, 2, 3, 4, 5, 6, 7, 8]) {
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async_test(function(t) {
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const canvas = document.createElement("canvas");
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canvas.width = 160;
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canvas.height = 320;
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document.body.append(canvas);
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const ctx = canvas.getContext("2d");
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loadImage(`resources/squares_${orientation}.jpg`)
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.then((image) => createImageBitmap(image, { imageOrientation: "none" }))
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.then(t.step_func_done(function(imageBitmap) {
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ctx.drawImage(imageBitmap, 0, 0, 160, 320);
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checkColors(ctx, canvas.width, canvas.height, false, [
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// row, col, r, g, b, a
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[0, 0, 0, 0, 0, 255],
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[0, 1, 128, 128, 128, 255],
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[1, 0, 0, 0, 255, 255],
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[1, 1, 128, 128, 255, 255],
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[2, 0, 0, 255, 0, 255],
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[2, 1, 128, 255, 128, 255],
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[3, 0, 255, 0, 0, 255],
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[3, 1, 255, 128, 128, 255],
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]);
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}));
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}, `createImageBitmap with Orientation ${orientation}`);
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}
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</script>
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After Width: | Height: | Size: 1.2 KiB |
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After Width: | Height: | Size: 1.2 KiB |
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After Width: | Height: | Size: 1.2 KiB |
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After Width: | Height: | Size: 1.2 KiB |
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After Width: | Height: | Size: 1.2 KiB |
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After Width: | Height: | Size: 1.2 KiB |
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After Width: | Height: | Size: 1.2 KiB |
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After Width: | Height: | Size: 1.2 KiB |