Vendor things

third-party/vendor/web-sys/webidls/enabled/HTMLCanvasElement.webidl

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+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * The origin of this IDL file is
+ * http://www.whatwg.org/specs/web-apps/current-work/#the-canvas-element
+ * © Copyright 2004-2011 Apple Computer, Inc., Mozilla Foundation, and
+ * Opera Software ASA. You are granted a license to use, reproduce
+ * and create derivative works of this document.
+ */
+/* TODO
+interface nsISupports;
+interface Variant;
+*/
+
+[HTMLConstructor]
+interface HTMLCanvasElement : HTMLElement {
+  [CEReactions, Pure, SetterThrows]
+           attribute unsigned long width;
+  [CEReactions, Pure, SetterThrows]
+           attribute unsigned long height;
+
+  [Throws]
+  nsISupports? getContext(DOMString contextId, optional any contextOptions = null);
+
+  [Throws, NeedsSubjectPrincipal]
+  DOMString toDataURL(optional DOMString type = "",
+                      optional any encoderOptions);
+  [Throws, NeedsSubjectPrincipal]
+  undefined toBlob(BlobCallback _callback,
+              optional DOMString type = "",
+              optional any encoderOptions);
+};
+
+// For OffscreenCanvas
+// Reference: https://wiki.whatwg.org/wiki/OffscreenCanvas
+partial interface HTMLCanvasElement {
+  [Throws]
+  OffscreenCanvas transferControlToOffscreen();
+};
+
+// For MediaStream
+// Reference: https://w3c.github.io/mediacapture-main/getusermedia.html#idl-def-mediastream
+partial interface HTMLCanvasElement {
+  [Throws]
+  MediaStream captureStream (optional double frameRequestRate);
+};
+
+callback BlobCallback = undefined(Blob? blob);