/* * Copyright (C) 2014 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(IOS) #include "ScrollingStateTree.h" #include "ScrollingTree.h" namespace WebCore { class AsyncScrollingCoordinator; class ScrollingTreeIOS final : public ScrollingTree { public: static Ref<ScrollingTreeIOS> create(AsyncScrollingCoordinator&); virtual ~ScrollingTreeIOS(); private: explicit ScrollingTreeIOS(AsyncScrollingCoordinator&); bool isScrollingTreeIOS() const final { return true; } // No wheel events on iOS void handleWheelEvent(const PlatformWheelEvent&) final { } EventResult tryToHandleWheelEvent(const PlatformWheelEvent&) final { return DidNotHandleEvent; } void invalidate() final; Ref<ScrollingTreeNode> createScrollingTreeNode(ScrollingNodeType, ScrollingNodeID) final; void scrollingTreeNodeDidScroll(ScrollingNodeID, const FloatPoint& scrollPosition, const std::optional<FloatPoint>& layoutViewportOrigin, ScrollingLayerPositionAction = ScrollingLayerPositionAction::Sync) final; void currentSnapPointIndicesDidChange(WebCore::ScrollingNodeID, unsigned horizontal, unsigned vertical) final; FloatRect fixedPositionRect() final; RefPtr<AsyncScrollingCoordinator> m_scrollingCoordinator; }; } // namespace WebCore SPECIALIZE_TYPE_TRAITS_SCROLLING_TREE(WebCore::ScrollingTreeIOS, isScrollingTreeIOS()) #endif // ENABLE(ASYNC_SCROLLING) && PLATFORM(IOS)