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/*
* Copyright (C) 2018 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 "ScrollingCoordinatorNicosia.h"
#if ENABLE(ASYNC_SCROLLING) && USE(NICOSIA)
#include "ScrollingThread.h"
#include "ScrollingTreeNicosia.h"
namespace WebCore {
Ref<ScrollingCoordinator> ScrollingCoordinator::create(Page* page)
{
return adoptRef(*new ScrollingCoordinatorNicosia(page));
}
ScrollingCoordinatorNicosia::ScrollingCoordinatorNicosia(Page* page)
: AsyncScrollingCoordinator(page)
{
setScrollingTree(ScrollingTreeNicosia::create(*this));
}
ScrollingCoordinatorNicosia::~ScrollingCoordinatorNicosia()
{
ASSERT(!scrollingTree());
}
void ScrollingCoordinatorNicosia::pageDestroyed()
{
AsyncScrollingCoordinator::pageDestroyed();
// Invalidating the scrolling tree will break the reference cycle between the ScrollingCoordinator and ScrollingTree objects.
RefPtr<ThreadedScrollingTree> scrollingTree = static_pointer_cast<ThreadedScrollingTree>(releaseScrollingTree());
ScrollingThread::dispatch([scrollingTree] { scrollingTree->invalidate(); });
}
void ScrollingCoordinatorNicosia::commitTreeStateIfNeeded()
{
willCommitTree();
if (!scrollingStateTree()->hasChangedProperties())
return;
auto stateTree = scrollingStateTree()->commit(LayerRepresentation::PlatformLayerRepresentation);
scrollingTree()->commitTreeState(WTFMove(stateTree));
}
bool ScrollingCoordinatorNicosia::handleWheelEventForScrolling(const PlatformWheelEvent& wheelEvent, ScrollingNodeID targetNode, std::optional<WheelScrollGestureState> gestureState)
{
ASSERT(isMainThread());
ASSERT(m_page);
ASSERT(scrollingTree());
ScrollingThread::dispatch([threadedScrollingTree = makeRef(downcast<ThreadedScrollingTree>(*scrollingTree())), wheelEvent, targetNode, gestureState] {
threadedScrollingTree->handleWheelEventAfterMainThread(wheelEvent, targetNode, gestureState);
});
return true;
}
void ScrollingCoordinatorNicosia::wheelEventWasProcessedByMainThread(const PlatformWheelEvent& wheelEvent, std::optional<WheelScrollGestureState> gestureState)
{
RefPtr<ThreadedScrollingTree> threadedScrollingTree = downcast<ThreadedScrollingTree>(scrollingTree());
threadedScrollingTree->wheelEventWasProcessedByMainThread(wheelEvent, gestureState);
}
void ScrollingCoordinatorNicosia::scheduleTreeStateCommit()
{
scheduleRenderingUpdate();
}
void ScrollingCoordinatorNicosia::willStartRenderingUpdate()
{
RefPtr<ThreadedScrollingTree> threadedScrollingTree = downcast<ThreadedScrollingTree>(scrollingTree());
threadedScrollingTree->willStartRenderingUpdate();
commitTreeStateIfNeeded();
synchronizeStateFromScrollingTree();
}
} // namespace WebCore
#endif // ENABLE(ASYNC_SCROLLING) && USE(NICOSIA)
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