Mandoline: Allow submitting CompositorFrames directly to mojo::Views

components/view_manager/public/cpp/view_surface.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_VIEW_MANAGER_PUBLIC_CPP_VIEW_SURFACE_H_
+#define COMPONENTS_VIEW_MANAGER_PUBLIC_CPP_VIEW_SURFACE_H_
+
+#include "base/observer_list.h"
+#include "components/view_manager/public/interfaces/compositor_frame.mojom.h"
+#include "third_party/mojo/src/mojo/public/cpp/bindings/binding.h"
+#include "third_party/mojo/src/mojo/public/cpp/bindings/interface_ptr_info.h"
+
+namespace mojo {
+
+class ViewSurfaceClient;
+class View;
+
+// A ViewSurface is wrapper to simplify submitting CompositorFrames to Views,
+// and receiving ReturnedResources.
+class ViewSurface : public mojo::SurfaceClient {
+ public:
+  ~ViewSurface() override;
+
+  // Called to indicate that the current thread has assumed control of this
+  // object.
+  void BindToThread();
+
+
+  // TODO(fsamuel): Add a callback.
+  void SubmitCompositorFrame(mojo::CompositorFramePtr frame);
+
+  void set_client(mojo::ViewSurfaceClient* client) { client_ = client; }
+
+ private:
+  friend class mojo::View;
+
+  ViewSurface(mojo::InterfacePtrInfo<mojo::Surface> surface_info,
+              mojo::InterfaceRequest<mojo::SurfaceClient> client_request);
+
+  // SurfaceClient implementation:
+  void ReturnResources(
+      mojo::Array<mojo::ReturnedResourcePtr> resources) override;
+
+  mojo::ViewSurfaceClient* client_;
+  mojo::InterfacePtrInfo<mojo::Surface> surface_info_;
+  mojo::InterfaceRequest<mojo::SurfaceClient> client_request_;
+  mojo::SurfacePtr surface_;
+  mojo::Binding<mojo::SurfaceClient> client_binding_;
+  bool bound_to_thread_;
+};
+
+}  // namespace mojo
+
+#endif  // COMPONENTS_VIEW_MANAGER_PUBLIC_CPP_VIEW_SURFACE_H_