69 lines
3.1 KiB
C++
69 lines
3.1 KiB
C++
/*
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* Copyright (C) 2017 Igalia S.L. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#if ENABLE(ASYNC_SCROLLING)
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#include "ScrollingTreeScrollingNode.h"
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namespace WebCore {
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class ScrollingTreeScrollingNodeDelegate {
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public:
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WEBCORE_EXPORT explicit ScrollingTreeScrollingNodeDelegate(ScrollingTreeScrollingNode&);
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WEBCORE_EXPORT virtual ~ScrollingTreeScrollingNodeDelegate();
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ScrollingTreeScrollingNode& scrollingNode() { return m_scrollingNode; }
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const ScrollingTreeScrollingNode& scrollingNode() const { return m_scrollingNode; }
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protected:
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WEBCORE_EXPORT ScrollingTree& scrollingTree() const;
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WEBCORE_EXPORT FloatPoint lastCommittedScrollPosition() const;
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WEBCORE_EXPORT const FloatSize& totalContentsSize();
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WEBCORE_EXPORT const FloatSize& reachableContentsSize();
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WEBCORE_EXPORT const IntPoint& scrollOrigin() const;
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FloatPoint currentScrollPosition() const { return m_scrollingNode.currentScrollPosition(); }
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FloatPoint minimumScrollPosition() const { return m_scrollingNode.minimumScrollPosition(); }
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FloatPoint maximumScrollPosition() const { return m_scrollingNode.maximumScrollPosition(); }
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FloatSize scrollableAreaSize() const { return m_scrollingNode.scrollableAreaSize(); }
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FloatSize totalContentsSize() const { return m_scrollingNode.totalContentsSize(); }
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bool allowsHorizontalScrolling() const { return m_scrollingNode.allowsHorizontalScrolling(); }
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bool allowsVerticalScrolling() const { return m_scrollingNode.allowsVerticalScrolling(); }
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ScrollElasticity horizontalScrollElasticity() const { return m_scrollingNode.horizontalScrollElasticity(); }
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ScrollElasticity verticalScrollElasticity() const { return m_scrollingNode.verticalScrollElasticity(); }
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private:
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ScrollingTreeScrollingNode& m_scrollingNode;
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};
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} // namespace WebCore
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#endif // ENABLE(ASYNC_SCROLLING)
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