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// Copyright (c) 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 CONTENT_BROWSER_RENDERER_HOST_SMOOTH_SCROLL_CALCULATOR_H_
#define CONTENT_BROWSER_RENDERER_HOST_SMOOTH_SCROLL_CALCULATOR_H_
#include "base/time.h"
namespace content {
// An utility class to calculate the delta for smooth scroll gesture
// events.
class SmoothScrollCalculator {
public:
SmoothScrollCalculator();
~SmoothScrollCalculator();
double GetScrollDelta(base::TimeTicks now, base::TimeDelta desired_interval);
private:
base::TimeTicks last_tick_time_;
DISALLOW_COPY_AND_ASSIGN(SmoothScrollCalculator);
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_SMOOTH_SCROLL_CALCULATOR_H_
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