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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assertEquals } from "./test_util.ts";
function generateNumberedData(n: number): Uint8ClampedArray {
return new Uint8ClampedArray(
Array.from({ length: n }, (_, i) => [i + 1, 0, 0, 1]).flat(),
);
}
Deno.test(async function imageBitmapDirect() {
const data = generateNumberedData(3);
const imageData = new ImageData(data, 3, 1);
const imageBitmap = await createImageBitmap(imageData);
assertEquals(
// @ts-ignore: Deno[Deno.internal].core allowed
Deno[Deno.internal].getBitmapData(imageBitmap),
new Uint8Array(data.buffer),
);
});
Deno.test(async function imageBitmapCrop() {
const data = generateNumberedData(3 * 3);
const imageData = new ImageData(data, 3, 3);
const imageBitmap = await createImageBitmap(imageData, 1, 1, 1, 1);
assertEquals(
// @ts-ignore: Deno[Deno.internal].core allowed
Deno[Deno.internal].getBitmapData(imageBitmap),
new Uint8Array([5, 0, 0, 1]),
);
});
Deno.test(async function imageBitmapCropPartialNegative() {
const data = generateNumberedData(3 * 3);
const imageData = new ImageData(data, 3, 3);
const imageBitmap = await createImageBitmap(imageData, -1, -1, 2, 2);
// @ts-ignore: Deno[Deno.internal].core allowed
// deno-fmt-ignore
assertEquals(Deno[Deno.internal].getBitmapData(imageBitmap), new Uint8Array([
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 1, 0, 0, 1
]));
});
Deno.test(async function imageBitmapCropGreater() {
const data = generateNumberedData(3 * 3);
const imageData = new ImageData(data, 3, 3);
const imageBitmap = await createImageBitmap(imageData, -1, -1, 5, 5);
// @ts-ignore: Deno[Deno.internal].core allowed
// deno-fmt-ignore
assertEquals(Deno[Deno.internal].getBitmapData(imageBitmap), new Uint8Array([
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 1, 0, 0, 1, 2, 0, 0, 1, 3, 0, 0, 1, 0, 0, 0, 0,
0, 0, 0, 0, 4, 0, 0, 1, 5, 0, 0, 1, 6, 0, 0, 1, 0, 0, 0, 0,
0, 0, 0, 0, 7, 0, 0, 1, 8, 0, 0, 1, 9, 0, 0, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
]));
});
Deno.test(async function imageBitmapScale() {
const data = generateNumberedData(3);
const imageData = new ImageData(data, 3, 1);
const imageBitmap = await createImageBitmap(imageData, {
resizeHeight: 5,
resizeWidth: 5,
resizeQuality: "pixelated",
});
// @ts-ignore: Deno[Deno.internal].core allowed
// deno-fmt-ignore
assertEquals(Deno[Deno.internal].getBitmapData(imageBitmap), new Uint8Array([
1, 0, 0, 1, 1, 0, 0, 1, 2, 0, 0, 1, 3, 0, 0, 1, 3, 0, 0, 1,
1, 0, 0, 1, 1, 0, 0, 1, 2, 0, 0, 1, 3, 0, 0, 1, 3, 0, 0, 1,
1, 0, 0, 1, 1, 0, 0, 1, 2, 0, 0, 1, 3, 0, 0, 1, 3, 0, 0, 1,
1, 0, 0, 1, 1, 0, 0, 1, 2, 0, 0, 1, 3, 0, 0, 1, 3, 0, 0, 1,
1, 0, 0, 1, 1, 0, 0, 1, 2, 0, 0, 1, 3, 0, 0, 1, 3, 0, 0, 1
]));
});
Deno.test(async function imageBitmapFlipY() {
const data = generateNumberedData(9);
const imageData = new ImageData(data, 3, 3);
const imageBitmap = await createImageBitmap(imageData, {
imageOrientation: "flipY",
});
// @ts-ignore: Deno[Deno.internal].core allowed
// deno-fmt-ignore
assertEquals(Deno[Deno.internal].getBitmapData(imageBitmap), new Uint8Array([
7, 0, 0, 1, 8, 0, 0, 1, 9, 0, 0, 1,
4, 0, 0, 1, 5, 0, 0, 1, 6, 0, 0, 1,
1, 0, 0, 1, 2, 0, 0, 1, 3, 0, 0, 1,
]));
});
Deno.test(async function imageBitmapFromBlob() {
const path = "tests/testdata/image/1x1-white.png";
const imageData = new Blob([await Deno.readFile(path)], {
type: "image/png",
});
const imageBitmap = await createImageBitmap(imageData);
// @ts-ignore: Deno[Deno.internal].core allowed
// deno-fmt-ignore
assertEquals(Deno[Deno.internal].getBitmapData(imageBitmap), new Uint8Array([255,255,255,255]));
});
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