[CRD iOS] Hook the touch input feedback

remoting/client/ui/renderer_proxy.h

+// Copyright 2017 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 REMOTING_CLIENT_UI_RENDERER_PROXY_H_
+#define REMOTING_CLIENT_UI_RENDERER_PROXY_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
+#include "base/single_thread_task_runner.h"
+
+namespace remoting {
+
+class GlRenderer;
+class QueuedTaskPoster;
+class ViewMatrix;
+
+// A class to proxy calls to GlRenderer from one thread to another.
+// TODO(yuweih): This should be removed once we have moved Drawables out of
+// GlRenderer.
+class RendererProxy {
+ public:
+  // task_runner: The task runner that |renderer_| should be run on.
+  RendererProxy(scoped_refptr<base::SingleThreadTaskRunner> task_runner);
+  ~RendererProxy();
+
+  // Initialize with the renderer to be proxied.
+  void Initialize(base::WeakPtr<GlRenderer> renderer);
+
+  void SetTransformation(const ViewMatrix& transformation);
+  void SetCursorPosition(float x, float y);
+  void SetCursorVisibility(bool visible);
+  void StartInputFeedback(float x, float y, float diameter);
+
+  base::WeakPtr<RendererProxy> GetWeakPtr();
+
+ private:
+  // Runs the |task| on the thread of |task_runner_|. All tasks run with
+  // |needs_synchronization| set to true inside the same tick will be run on
+  // |task_runner_| within the same tick.
+  void RunTaskOnProperThread(const base::Closure& task,
+                             bool needs_synchronization);
+
+  base::WeakPtr<GlRenderer> renderer_;
+  scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
+  std::unique_ptr<remoting::QueuedTaskPoster> ui_task_poster_;
+
+  base::WeakPtrFactory<RendererProxy> weak_factory_;
+
+  // RenderStubProxy is neither copyable nor movable.
+  RendererProxy(const RendererProxy&) = delete;
+  RendererProxy& operator=(const RendererProxy&) = delete;
+};
+
+}  // namespace remoting
+#endif  // REMOTING_CLIENT_UI_RENDERER_PROXY_H_