Refactoring of the client-side input pipeline and scaling dimension management.

remoting/client/mouse_input_filter.h

Index: remoting/client/mouse_input_filter.h
diff --git a/remoting/client/mouse_input_filter.h b/remoting/client/mouse_input_filter.h
new file mode 100644
index 0000000000000000000000000000000000000000..5e8e0d5c290cdd214a6663a5c358a269e95cc423
--- /dev/null
+++ b/remoting/client/mouse_input_filter.h
@@ -0,0 +1,44 @@
+// Copyright (c) 2011 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_MOUSE_INPUT_FILTER_H_
+#define REMOTING_CLIENT_MOUSE_INPUT_FILTER_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "remoting/protocol/input_stub.h"
+#include "third_party/skia/include/core/SkSize.h"
+
+namespace remoting {
+
+// Filtering InputStub implementation which scales mouse events based on the
+// supplied input and output dimensions, and clamps their coordinates to the
+// output dimensions, before passing events on to |input_stub|.
+class MouseInputFilter : public protocol::InputStub {
+ public:
+  MouseInputFilter(protocol::InputStub* input_stub);
+  virtual ~MouseInputFilter();
+
+  // Specify the input dimensions for mouse events.
+  void set_input_size(const SkISize& size);
+
+  // Specify the output dimensions.
+  void set_output_size(const SkISize& size);
+
+  // InputStub interface.
+  virtual void InjectKeyEvent(const protocol::KeyEvent& event) OVERRIDE;
+  virtual void InjectMouseEvent(const protocol::MouseEvent& event) OVERRIDE;
+
+ private:
+  protocol::InputStub* input_stub_;
+
+  SkISize input_size_;
+  SkISize output_size_;
+
+  DISALLOW_COPY_AND_ASSIGN(MouseInputFilter);
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_CLIENT_MOUSE_INPUT_FILTER_H_