| /* |
| * Copyright (C) 2012, 2014-2015 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) && PLATFORM(MAC) |
| |
| #include "ScrollbarThemeMac.h" |
| #include "ScrollingStateFrameScrollingNode.h" |
| #include "ScrollingTreeFrameScrollingNode.h" |
| #include "ScrollingTreeScrollingNodeDelegateMac.h" |
| #include <wtf/RetainPtr.h> |
| |
| OBJC_CLASS CALayer; |
| |
| namespace WebCore { |
| |
| class WEBCORE_EXPORT ScrollingTreeFrameScrollingNodeMac : public ScrollingTreeFrameScrollingNode { |
| public: |
| static Ref<ScrollingTreeFrameScrollingNode> create(ScrollingTree&, ScrollingNodeType, ScrollingNodeID); |
| virtual ~ScrollingTreeFrameScrollingNodeMac(); |
| |
| protected: |
| ScrollingTreeFrameScrollingNodeMac(ScrollingTree&, ScrollingNodeType, ScrollingNodeID); |
| |
| // ScrollingTreeNode member functions. |
| void commitStateBeforeChildren(const ScrollingStateNode&) override; |
| void commitStateAfterChildren(const ScrollingStateNode&) override; |
| |
| ScrollingEventResult handleWheelEvent(const PlatformWheelEvent&) override; |
| |
| WEBCORE_EXPORT void repositionRelatedLayers() override; |
| |
| FloatPoint minimumScrollPosition() const override; |
| FloatPoint maximumScrollPosition() const override; |
| |
| void updateMainFramePinState(); |
| |
| unsigned exposedUnfilledArea() const; |
| |
| private: |
| FloatPoint adjustedScrollPosition(const FloatPoint&, ScrollPositionClamp) const override; |
| |
| void currentScrollPositionChanged() override; |
| void repositionScrollingLayers() override; |
| |
| ScrollingTreeScrollingNodeDelegateMac m_delegate; |
| |
| RetainPtr<CALayer> m_rootContentsLayer; |
| RetainPtr<CALayer> m_counterScrollingLayer; |
| RetainPtr<CALayer> m_insetClipLayer; |
| RetainPtr<CALayer> m_contentShadowLayer; |
| RetainPtr<CALayer> m_headerLayer; |
| RetainPtr<CALayer> m_footerLayer; |
| |
| bool m_lastScrollHadUnfilledPixels { false }; |
| bool m_hadFirstUpdate { false }; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(ASYNC_SCROLLING) && PLATFORM(MAC) |