1 files changed, 89 insertions, 0 deletions
diff --git a/dom/canvas/ImageData.h b/dom/canvas/ImageData.h
new file mode 100644
index 0000000000..71a1e80375
--- /dev/null
+++ b/dom/canvas/ImageData.h
@@ -0,0 +1,89 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 et tw=78: */
+/* 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/. */
+
+#ifndef mozilla_dom_ImageData_h
+#define mozilla_dom_ImageData_h
+
+#include <cstdint>
+#include <utility>
+#include "js/RootingAPI.h"
+#include "mozilla/AlreadyAddRefed.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/dom/TypedArray.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsISupports.h"
+
+class JSObject;
+class nsIGlobalObject;
+struct JSContext;
+struct JSStructuredCloneReader;
+struct JSStructuredCloneWriter;
+
+namespace mozilla {
+class ErrorResult;
+
+namespace dom {
+
+class GlobalObject;
+template <typename T>
+class Optional;
+
+class ImageData final : public nsISupports {
+ public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(ImageData)
+
+  const uint32_t mWidth;
+  const uint32_t mHeight;
+
+ private:
+  JS::Heap<JSObject*> mData;
+
+ public:
+  ImageData(uint32_t aWidth, uint32_t aHeight, JSObject& aData)
+      : mWidth(aWidth), mHeight(aHeight), mData(&aData) {
+    HoldData();
+  }
+
+  static already_AddRefed<ImageData> Constructor(const GlobalObject& aGlobal,
+                                                 const uint32_t aWidth,
+                                                 const uint32_t aHeight,
+                                                 ErrorResult& aRv);
+
+  static already_AddRefed<ImageData> Constructor(
+      const GlobalObject& aGlobal, const Uint8ClampedArray& aData,
+      const uint32_t aWidth, const Optional<uint32_t>& aHeight,
+      ErrorResult& aRv);
+
+  uint32_t Width() const { return mWidth; }
+  uint32_t Height() const { return mHeight; }
+  void GetData(JSContext* cx, JS::MutableHandle<JSObject*> aData) const {
+    aData.set(GetDataObject());
+  }
+  JSObject* GetDataObject() const { return mData; }
+
+  bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto,
+                  JS::MutableHandle<JSObject*> aReflector);
+
+  //[Serializable] implementation
+  static already_AddRefed<ImageData> ReadStructuredClone(
+      JSContext* aCx, nsIGlobalObject* aGlobal,
+      JSStructuredCloneReader* aReader);
+  bool WriteStructuredClone(JSContext* aCx,
+                            JSStructuredCloneWriter* aWriter) const;
+
+ private:
+  void HoldData();
+  void DropData();
+
+  ImageData() = delete;
+  ~ImageData() { DropData(); }
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // mozilla_dom_ImageData_h