C++程序  |  26行  |  683 B

// Copyright 2013 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 CC_INPUT_TOP_CONTROLS_MANAGER_CLIENT_H_
#define CC_INPUT_TOP_CONTROLS_MANAGER_CLIENT_H_

namespace cc {

class LayerTreeImpl;

class CC_EXPORT TopControlsManagerClient {
 public:
  virtual void SetControlsTopOffset(float offset) = 0;
  virtual float ControlsTopOffset() const = 0;
  virtual void DidChangeTopControlsPosition() = 0;
  virtual bool HaveRootScrollLayer() const = 0;

 protected:
  virtual ~TopControlsManagerClient() {}
};

}  // namespace cc

#endif  // CC_INPUT_TOP_CONTROLS_MANAGER_CLIENT_H_