src/remoting/host/mouse_clamping_filter.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef REMOTING_HOST_MOUSE_CLAMPING_FILTER_H_
   6 #define REMOTING_HOST_MOUSE_CLAMPING_FILTER_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "remoting/protocol/mouse_input_filter.h"
  10 #include "remoting/protocol/video_stub.h"
  11
  12 namespace remoting {
  13
  14 // Filtering VideoStub implementation which configures a MouseInputFilter to
  15 // clamp mouse events to fall within the dimensions of the most-recently
  16 // received video frame.
  17 class MouseClampingFilter : public protocol::VideoStub {
  18  public:
  19   explicit MouseClampingFilter(protocol::InputStub* input_stub);
  20   virtual ~MouseClampingFilter();
  21
  22   protocol::InputStub* input_filter() { return &input_filter_; }
  23
  24   void set_video_stub(protocol::VideoStub* video_stub) {
  25     video_stub_ = video_stub;
  26   }
  27
  28   // protocol::VideoStub implementation.
  29   virtual void ProcessVideoPacket(scoped_ptr<VideoPacket> video_packet,
  30                                   const base::Closure& done) OVERRIDE;
  31
  32  private:
  33   // Clamps mouse event coordinates to the video dimensions.
  34   protocol::MouseInputFilter input_filter_;
  35
  36   protocol::VideoStub* video_stub_;
  37
  38   DISALLOW_COPY_AND_ASSIGN(MouseClampingFilter);
  39 };
  40
  41 }  // namespace remoting
  42
  43 #endif  // REMOTING_HOST_MOUSE_CLAMPING_FILTER_H_