clipboard.setImageData()

イメージをクリップボードにコピーします。イメージはクリップボードに書き込まれる前に再エンコードされます。イメージが無効な場合、クリップボードは修正されません。

The image is provided as an ArrayBuffer containing the encoded image. JPEG and PNG formats are supported.

Although this API is based on Chrome's clipboard.setImageData() API, there are some differences:

• The Chrome API is only for apps, not extensions.
• This API requires only the "clipboardWrite" permission, while the Chrome version also requires the "clipboard" permission.
• Chrome's API uses callbacks, and this API only supports promises.
• This API does not support the additionalItems parameter.

これはPromiseを返す非同期関数です。

imageData

An ArrayBuffer containing the encoded image data to copy to the clipboard.

imageType

A DOMString indicating the type of image contained in imageData: "png" or "jpeg".

A Promise that will be resolved with no arguments if the operation succeeded, or rejected if there was an error (for example, because the data did not represent a valid image).

Copy a remote image:

// requires:
// * the host permission for "https://cdn.mdn.mozilla.net/*"
// * the API permission "clipboardWrite"

fetch('https://cdn.mdn.mozilla.net/static/img/favicon144.png')
.then(response => response.arrayBuffer())
.then(buffer => browser.clipboard.setImageData(buffer, 'png'));

Copy an image that was bundled with the extension:

// requires the API permission "clipboardWrite"

fetch(browser.runtime.getURL('image.png'))
.then(response => response.arrayBuffer())
.then(buffer => browser.clipboard.setImageData(buffer, 'png'));