| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title> |
| Async Clipboard write [image/png Blob] -> read [image/png Blob] tests |
| </title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <p> |
| <p>The bottom image should display the same image as the top image.</p> |
| <p>Original Image:</p> |
| <image id="image-to-copy" width="20" height="20" |
| src="resources/greenbox.png"></image> |
| <p>Image after copy/paste:</p> |
| <image id="image-on-clipboard"></image> |
| <canvas id="canvas" width="20" height="20"></canvas> |
| </p> |
| |
| <script> |
| // Must compare a bitmap as opposed to simply blob data, because an encoded |
| // image may have different contents depending on encoder. |
| async function getBitmapString(blob) { |
| const imageBitmap = await createImageBitmap(blob); |
| const canvas = document.getElementById('canvas'); |
| const ctx = canvas.getContext('2d'); |
| |
| ctx.drawImage(imageBitmap, 0,0); |
| |
| let imageData = ctx.getImageData(0, 0, canvas.width, canvas.height); |
| ctx.clearRect(0, 0, canvas.width, canvas.height); |
| return imageData.data.toString(); |
| }; |
| |
| async function loadBlob(fileName) { |
| const fetched = await fetch(fileName); |
| return await fetched.blob(); |
| } |
| |
| promise_test(async t => { |
| const blobInput = await loadBlob('resources/greenbox.png'); |
| |
| assert_equals(blobInput.type, 'image/png'); |
| await navigator.clipboard.write({'image/png' : blobInput}); |
| const blobsOutput = await navigator.clipboard.read(); |
| assert_equals(Object.keys(blobsOutput).length, 1); |
| const blobOutput = blobsOutput['image/png']; |
| assert_equals(blobOutput.type, 'image/png'); |
| |
| document.getElementById('image-on-clipboard').src = |
| window.URL.createObjectURL(blobOutput); |
| |
| const comparableInput = await getBitmapString(blobInput); |
| const comparableOutput = await getBitmapString(blobOutput); |
| |
| assert_equals(comparableOutput, comparableInput); |
| }, 'Verify write and read clipboard ([image/png Blob])'); |
| </script> |
| <p> |
| Note: This is a manual test because it writes/reads to the shared system |
| clipboard and thus cannot be run async with other tests that might interact |
| with the clipboard. |
| </p> |
