cc/input/top_controls_manager_client.h

   1 // Copyright 2013 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 CC_INPUT_TOP_CONTROLS_MANAGER_CLIENT_H_
   6 #define CC_INPUT_TOP_CONTROLS_MANAGER_CLIENT_H_
   7
   8 namespace cc {
   9
  10 class LayerTreeImpl;
  11
  12 class CC_EXPORT TopControlsManagerClient {
  13  public:
  14   virtual float TopControlsHeight() const = 0;
  15   virtual void SetCurrentTopControlsShownRatio(float ratio) = 0;
  16   virtual float CurrentTopControlsShownRatio() const = 0;
  17   virtual void DidChangeTopControlsPosition() = 0;
  18   virtual bool HaveRootScrollLayer() const = 0;
  19
  20  protected:
  21   virtual ~TopControlsManagerClient() {}
  22 };
  23
  24 }  // namespace cc
  25
  26 #endif  // CC_INPUT_TOP_CONTROLS_MANAGER_CLIENT_H_