Part 3 of cc/ directory shuffles: animation

cc/scrollbar_animation_controller_linear_fade.h

-// Copyright 2012 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_SCROLLBAR_ANIMATION_CONTROLLER_LINEAR_FADE_H_
-#define CC_SCROLLBAR_ANIMATION_CONTROLLER_LINEAR_FADE_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "cc/base/cc_export.h"
-#include "cc/scrollbar_animation_controller.h"
-
-namespace cc {
-class LayerImpl;
-
-class CC_EXPORT ScrollbarAnimationControllerLinearFade : public ScrollbarAnimationController {
-public:
-    static scoped_ptr<ScrollbarAnimationControllerLinearFade> create(LayerImpl* scrollLayer, base::TimeDelta fadeoutDelay, base::TimeDelta fadeoutLength);
-
-    virtual ~ScrollbarAnimationControllerLinearFade();
-
-    // ScrollbarAnimationController overrides.
-    virtual bool isScrollGestureInProgress() const OVERRIDE;
-    virtual bool isAnimating() const OVERRIDE;
-    virtual base::TimeDelta delayBeforeStart(base::TimeTicks now) const OVERRIDE;
-
-    virtual bool animate(base::TimeTicks) OVERRIDE;
-    virtual void didScrollGestureBegin() OVERRIDE;
-    virtual void didScrollGestureEnd(base::TimeTicks now) OVERRIDE;
-    virtual void didProgrammaticallyUpdateScroll(base::TimeTicks now) OVERRIDE;
-
-protected:
-    ScrollbarAnimationControllerLinearFade(LayerImpl* scrollLayer, base::TimeDelta fadeoutDelay, base::TimeDelta fadeoutLength);
-
-private:
-    float opacityAtTime(base::TimeTicks);
-
-    LayerImpl* m_scrollLayer;
-
-    base::TimeTicks m_lastAwakenTime;
-    bool m_scrollGestureInProgress;
-
-    base::TimeDelta m_fadeoutDelay;
-    base::TimeDelta m_fadeoutLength;
-
-    double m_currentTimeForTesting;
-};
-
-} // namespace cc
-
-#endif  // CC_SCROLLBAR_ANIMATION_CONTROLLER_LINEAR_FADE_H_