blob: 1c8c0e91941725086a7a80db28ec34a0ff6b20ee [file] [log] [blame]
/*
* Copyright (C) 2012 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.
*/
#pragma once
#if ENABLE(ASYNC_SCROLLING)
#include "ScrollingConstraints.h"
#include "ScrollingTree.h"
#include "ScrollingTreeStickyNode.h"
#include <wtf/RetainPtr.h>
OBJC_CLASS CALayer;
namespace WebCore {
class ScrollingTreeStickyNodeCocoa : public ScrollingTreeStickyNode {
public:
WEBCORE_EXPORT static Ref<ScrollingTreeStickyNodeCocoa> create(ScrollingTree&, ScrollingNodeID);
virtual ~ScrollingTreeStickyNodeCocoa() = default;
CALayer *layer() { return m_layer.get(); }
private:
ScrollingTreeStickyNodeCocoa(ScrollingTree&, ScrollingNodeID);
void commitStateBeforeChildren(const ScrollingStateNode&) final;
void applyLayerPositions() final WTF_REQUIRES_LOCK(scrollingTree().treeLock());
FloatPoint layerTopLeft() const final;
RetainPtr<CALayer> m_layer;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_SCROLLING_NODE(ScrollingTreeStickyNodeCocoa, isStickyNode())
#endif // ENABLE(ASYNC_SCROLLING)