1 files changed, 45 insertions, 0 deletions
diff --git a/widget/windows/PCompositorWidget.ipdl b/widget/windows/PCompositorWidget.ipdl
new file mode 100644
index 0000000000..a2d8db5896
--- /dev/null
+++ b/widget/windows/PCompositorWidget.ipdl
@@ -0,0 +1,45 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=99: */
+/* 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 protocol PCompositorBridge;
+
+include "mozilla/widget/WidgetMessageUtils.h";
+
+using mozilla::gfx::IntSize from "mozilla/gfx/Point.h";
+using mozilla::WindowsHandle from "mozilla/ipc/IPCTypes.h";
+using nsTransparencyMode from "nsIWidget.h";
+
+namespace mozilla {
+namespace widget {
+
+struct RemoteBackbufferHandles {
+  WindowsHandle fileMapping;
+  WindowsHandle requestReadyEvent;
+  WindowsHandle responseReadyEvent;
+};
+
+sync protocol PCompositorWidget
+{
+  manager PCompositorBridge;
+
+parent:
+  sync Initialize(RemoteBackbufferHandles aRemoteHandles);
+  
+  sync EnterPresentLock();
+  sync LeavePresentLock();
+  async UpdateTransparency(nsTransparencyMode aMode);
+  sync ClearTransparentWindow();
+  async __delete__();
+
+child:
+  async ObserveVsync();
+  async UnobserveVsync();
+  async UpdateCompositorWnd(WindowsHandle aCompositorWnd, WindowsHandle aParentWnd)
+    returns (bool success);
+};
+
+} // namespace widget
+} // namespace mozilla