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/*
* Copyright (C) 2023 Apple Inc. All rights reserved.
* Copyright (C) 2026 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 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.
*/
#include "config.h"
#include "ScrollbarsControllerCoordinated.h"
#if USE(COORDINATED_GRAPHICS_ASYNC_SCROLLBAR)
#include <WebCore/ScrollableArea.h>
#include <WebCore/ScrollbarTheme.h>
#include <WebCore/ScrollbarsControllerInlines.h>
#include <WebCore/ScrollingCoordinator.h>
#include <wtf/TZoneMallocInlines.h>
namespace WebKit {
WTF_MAKE_TZONE_ALLOCATED_IMPL(ScrollbarsControllerCoordinated);
ScrollbarsControllerCoordinated::ScrollbarsControllerCoordinated(WebCore::ScrollableArea& scrollableArea, WebCore::ScrollingCoordinator* coordinator)
: WebCore::ScrollbarsControllerGeneric(scrollableArea)
, m_coordinator(ThreadSafeWeakPtr<WebCore::ScrollingCoordinator>(coordinator))
{
if (auto scrollingCoordinator = m_coordinator.get())
scrollingCoordinator->setScrollbarWidth(scrollableArea, scrollableArea.scrollbarWidthStyle());
}
void ScrollbarsControllerCoordinated::scrollbarLayoutDirectionChanged(WebCore::UserInterfaceLayoutDirection scrollbarLayoutDirection)
{
WebCore::ScrollbarsControllerGeneric::scrollbarLayoutDirectionChanged(scrollbarLayoutDirection);
if (RefPtr scrollingCoordinator = m_coordinator.get())
scrollingCoordinator->setScrollbarLayoutDirection(checkedScrollableArea(), scrollbarLayoutDirection);
}
bool ScrollbarsControllerCoordinated::shouldDrawIntoScrollbarLayer(WebCore::Scrollbar& scrollbar) const
{
return scrollbar.isCustomScrollbar() || scrollbar.isMockScrollbar();
}
void ScrollbarsControllerCoordinated::updateScrollbarEnabledState(WebCore::Scrollbar& scrollbar)
{
if (auto scrollingCoordinator = m_coordinator.get())
scrollingCoordinator->setScrollbarEnabled(scrollbar);
}
void ScrollbarsControllerCoordinated::updateScrollbarStyle()
{
auto& theme = WebCore::ScrollbarTheme::theme();
if (theme.isMockTheme())
return;
// The different scrollbar styles have different thicknesses, so we must re-set the
// frameRect to the new thickness, and the re-layout below will ensure the position
// and length are properly updated.
updateScrollbarsThickness();
checkedScrollableArea()->scrollbarStyleChanged(theme.usesOverlayScrollbars() ? WebCore::ScrollbarStyle::Overlay : WebCore::ScrollbarStyle::AlwaysVisible, true);
}
void ScrollbarsControllerCoordinated::scrollbarOpacityChanged()
{
if (auto scrollingCoordinator = m_coordinator.get())
scrollingCoordinator->setScrollbarOpacity(checkedScrollableArea());
}
void ScrollbarsControllerCoordinated::hoveredPartChanged(WebCore::Scrollbar& scrollbar)
{
if (auto scrollingCoordinator = m_coordinator.get())
scrollingCoordinator->setHoveredAndPressedScrollbarParts(checkedScrollableArea());
}
void ScrollbarsControllerCoordinated::pressedPartChanged(WebCore::Scrollbar& scrollbar)
{
if (auto scrollingCoordinator = m_coordinator.get())
scrollingCoordinator->setHoveredAndPressedScrollbarParts(checkedScrollableArea());
}
}
#endif // USE(COORDINATED_GRAPHICS_ASYNC_SCROLLBAR)
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