Source/WebCore/platform/mac/ScrollAnimatorMac.h

/*
 * Copyright (C) 2010 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef ScrollAnimatorMac_h
#define ScrollAnimatorMac_h

#if ENABLE(SMOOTH_SCROLLING)

#include "ScrollAnimator.h"
#include <wtf/RetainPtr.h>

#ifdef __OBJC__
@class ScrollAnimationHelperDelegate;
#else
class ScrollAnimationHelperDelegate;
#endif

namespace WebCore {

class ScrollAnimatorMac : public ScrollAnimator {
public:
    ScrollAnimatorMac(ScrollbarClient*);
    virtual ~ScrollAnimatorMac();

    virtual bool scroll(ScrollbarOrientation, ScrollGranularity, float step, float multiplier);
    virtual void scrollToOffsetWithoutAnimation(const FloatPoint&);

    // Called by the ScrollAnimationHelperDelegate.
    void immediateScrollToPoint(const FloatPoint& newPosition);

private:
    RetainPtr<id> m_scrollAnimationHelper;
    RetainPtr<ScrollAnimationHelperDelegate> m_scrollAnimationHelperDelegate;
};

} // namespace WebCore

#endif // ENABLE(SMOOTH_SCROLLING)

#endif // ScrollAnimatorMac_h