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/*
* Copyright (C) 2019 Apple Inc. All rights reserved.
* Copyright (C) 2019 Igalia S.L.
*
* 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* HOLDER OR 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.
*/
#include "config.h"
#include "ScrollingTreeOverflowScrollingNodeNicosia.h"
#if ENABLE(ASYNC_SCROLLING) && USE(NICOSIA)
#include "NicosiaPlatformLayer.h"
#include "ScrollingTreeScrollingNodeDelegateNicosia.h"
#include "ThreadedScrollingTree.h"
namespace WebCore {
Ref<ScrollingTreeOverflowScrollingNode> ScrollingTreeOverflowScrollingNodeNicosia::create(ScrollingTree& scrollingTree, ScrollingNodeID nodeID)
{
return adoptRef(*new ScrollingTreeOverflowScrollingNodeNicosia(scrollingTree, nodeID));
}
ScrollingTreeOverflowScrollingNodeNicosia::ScrollingTreeOverflowScrollingNodeNicosia(ScrollingTree& scrollingTree, ScrollingNodeID nodeID)
: ScrollingTreeOverflowScrollingNode(scrollingTree, nodeID)
{
m_delegate = makeUnique<ScrollingTreeScrollingNodeDelegateNicosia>(*this, downcast<ThreadedScrollingTree>(scrollingTree).scrollAnimatorEnabled());
}
ScrollingTreeOverflowScrollingNodeNicosia::~ScrollingTreeOverflowScrollingNodeNicosia() = default;
ScrollingTreeScrollingNodeDelegateNicosia& ScrollingTreeOverflowScrollingNodeNicosia::delegate() const
{
return *static_cast<ScrollingTreeScrollingNodeDelegateNicosia*>(m_delegate.get());
}
bool ScrollingTreeOverflowScrollingNodeNicosia::commitStateBeforeChildren(const ScrollingStateNode& stateNode)
{
if (!ScrollingTreeOverflowScrollingNode::commitStateBeforeChildren(stateNode))
return false;
m_delegate->updateFromStateNode(downcast<ScrollingStateScrollingNode>(stateNode));
return true;
}
void ScrollingTreeOverflowScrollingNodeNicosia::repositionScrollingLayers()
{
auto* scrollLayer = static_cast<Nicosia::PlatformLayer*>(scrollContainerLayer());
ASSERT(scrollLayer);
auto& compositionLayer = downcast<Nicosia::CompositionLayer>(*scrollLayer);
auto scrollOffset = currentScrollOffset();
compositionLayer.accessPending(
[&scrollOffset](Nicosia::CompositionLayer::LayerState& state)
{
state.boundsOrigin = scrollOffset;
state.delta.boundsOriginChanged = true;
});
delegate().updateVisibleLengths();
}
WheelEventHandlingResult ScrollingTreeOverflowScrollingNodeNicosia::handleWheelEvent(const PlatformWheelEvent& wheelEvent, EventTargeting eventTargeting)
{
if (!canHandleWheelEvent(wheelEvent, eventTargeting))
return WheelEventHandlingResult::unhandled();
return WheelEventHandlingResult::result(delegate().handleWheelEvent(wheelEvent));
}
} // namespace WebCore
#endif // ENABLE(ASYNC_SCROLLING) && USE(NICOSIA)
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