1 files changed, 133 insertions, 0 deletions
diff --git a/dom/events/NotifyPaintEvent.cpp b/dom/events/NotifyPaintEvent.cpp
new file mode 100644
index 0000000000..6bbcd736a4
--- /dev/null
+++ b/dom/events/NotifyPaintEvent.cpp
@@ -0,0 +1,133 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include "base/basictypes.h"
+#include "ipc/IPCMessageUtils.h"
+#include "mozilla/dom/DOMRect.h"
+#include "mozilla/dom/NotifyPaintEvent.h"
+#include "mozilla/dom/PaintRequest.h"
+#include "mozilla/GfxMessageUtils.h"
+#include "nsContentUtils.h"
+
+namespace mozilla::dom {
+
+NotifyPaintEvent::NotifyPaintEvent(
+    EventTarget* aOwner, nsPresContext* aPresContext, WidgetEvent* aEvent,
+    EventMessage aEventMessage, nsTArray<nsRect>* aInvalidateRequests,
+    uint64_t aTransactionId, DOMHighResTimeStamp aTimeStamp)
+    : Event(aOwner, aPresContext, aEvent) {
+  if (mEvent) {
+    mEvent->mMessage = aEventMessage;
+  }
+  if (aInvalidateRequests) {
+    mInvalidateRequests.SwapElements(*aInvalidateRequests);
+  }
+
+  mTransactionId = aTransactionId;
+  mTimeStamp = aTimeStamp;
+}
+
+nsRegion NotifyPaintEvent::GetRegion(SystemCallerGuarantee) {
+  nsRegion r;
+  for (uint32_t i = 0; i < mInvalidateRequests.Length(); ++i) {
+    r.Or(r, mInvalidateRequests[i]);
+    r.SimplifyOutward(10);
+  }
+  return r;
+}
+
+already_AddRefed<DOMRect> NotifyPaintEvent::BoundingClientRect(
+    SystemCallerGuarantee aGuarantee) {
+  RefPtr<DOMRect> rect = new DOMRect(ToSupports(this));
+
+  if (mPresContext) {
+    rect->SetLayoutRect(GetRegion(aGuarantee).GetBounds());
+  }
+
+  return rect.forget();
+}
+
+already_AddRefed<DOMRectList> NotifyPaintEvent::ClientRects(
+    SystemCallerGuarantee aGuarantee) {
+  nsISupports* parent = ToSupports(this);
+  RefPtr<DOMRectList> rectList = new DOMRectList(parent);
+
+  nsRegion r = GetRegion(aGuarantee);
+  for (auto iter = r.RectIter(); !iter.Done(); iter.Next()) {
+    RefPtr<DOMRect> rect = new DOMRect(parent);
+    rect->SetLayoutRect(iter.Get());
+    rectList->Append(rect);
+  }
+
+  return rectList.forget();
+}
+
+already_AddRefed<PaintRequestList> NotifyPaintEvent::PaintRequests(
+    SystemCallerGuarantee) {
+  Event* parent = this;
+  RefPtr<PaintRequestList> requests = new PaintRequestList(parent);
+
+  for (uint32_t i = 0; i < mInvalidateRequests.Length(); ++i) {
+    RefPtr<PaintRequest> r = new PaintRequest(parent);
+    r->SetRequest(mInvalidateRequests[i]);
+    requests->Append(r);
+  }
+
+  return requests.forget();
+}
+
+void NotifyPaintEvent::Serialize(IPC::MessageWriter* aWriter,
+                                 bool aSerializeInterfaceType) {
+  if (aSerializeInterfaceType) {
+    IPC::WriteParam(aWriter, u"notifypaintevent"_ns);
+  }
+
+  Event::Serialize(aWriter, false);
+
+  uint32_t length = mInvalidateRequests.Length();
+  IPC::WriteParam(aWriter, length);
+  for (uint32_t i = 0; i < length; ++i) {
+    IPC::WriteParam(aWriter, mInvalidateRequests[i]);
+  }
+}
+
+bool NotifyPaintEvent::Deserialize(IPC::MessageReader* aReader) {
+  NS_ENSURE_TRUE(Event::Deserialize(aReader), false);
+
+  uint32_t length = 0;
+  NS_ENSURE_TRUE(IPC::ReadParam(aReader, &length), false);
+  mInvalidateRequests.SetCapacity(length);
+  for (uint32_t i = 0; i < length; ++i) {
+    nsRect req;
+    NS_ENSURE_TRUE(IPC::ReadParam(aReader, &req), false);
+    mInvalidateRequests.AppendElement(req);
+  }
+
+  return true;
+}
+
+uint64_t NotifyPaintEvent::TransactionId(SystemCallerGuarantee) {
+  return mTransactionId;
+}
+
+DOMHighResTimeStamp NotifyPaintEvent::PaintTimeStamp(SystemCallerGuarantee) {
+  return mTimeStamp;
+}
+
+}  // namespace mozilla::dom
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+already_AddRefed<NotifyPaintEvent> NS_NewDOMNotifyPaintEvent(
+    EventTarget* aOwner, nsPresContext* aPresContext, WidgetEvent* aEvent,
+    EventMessage aEventMessage, nsTArray<nsRect>* aInvalidateRequests,
+    uint64_t aTransactionId, DOMHighResTimeStamp aTimeStamp) {
+  RefPtr<NotifyPaintEvent> it =
+      new NotifyPaintEvent(aOwner, aPresContext, aEvent, aEventMessage,
+                           aInvalidateRequests, aTransactionId, aTimeStamp);
+  return it.forget();
+}