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/*
* Copyright (C) 2018-2023 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
#include "RemoteAcceleratedEffectStack.h"
#include "RemoteLayerBackingStore.h"
#include <WebCore/EventRegion.h>
#include <WebCore/LayerHostingContextIdentifier.h>
#include <WebCore/PlatformLayerIdentifier.h>
#include <WebCore/RenderingResourceIdentifier.h>
#include <WebCore/ScrollTypes.h>
#include <wtf/RetainPtr.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/Vector.h>
OBJC_CLASS CALayer;
OBJC_CLASS NSString;
#if PLATFORM(IOS_FAMILY)
OBJC_CLASS UIView;
#endif
namespace WebKit {
class RemoteLayerTreeNode;
}
namespace WTF {
template<typename T> struct IsDeprecatedWeakRefSmartPointerException;
template<> struct IsDeprecatedWeakRefSmartPointerException<WebKit::RemoteLayerTreeNode> : std::true_type { };
}
namespace WebKit {
class RemoteLayerTreeHost;
class RemoteLayerTreeScrollbars;
class RemoteLayerTreeNode : public CanMakeWeakPtr<RemoteLayerTreeNode> {
WTF_MAKE_TZONE_ALLOCATED(RemoteLayerTreeNode);
public:
RemoteLayerTreeNode(WebCore::PlatformLayerIdentifier, Markable<WebCore::LayerHostingContextIdentifier>, RetainPtr<CALayer>);
#if PLATFORM(IOS_FAMILY)
RemoteLayerTreeNode(WebCore::PlatformLayerIdentifier, Markable<WebCore::LayerHostingContextIdentifier>, RetainPtr<UIView>);
#endif
~RemoteLayerTreeNode();
static std::unique_ptr<RemoteLayerTreeNode> createWithPlainLayer(WebCore::PlatformLayerIdentifier);
CALayer *layer() const { return m_layer.get(); }
#if ENABLE(GAZE_GLOW_FOR_INTERACTION_REGIONS)
struct VisibleRectMarkableTraits {
static bool isEmptyValue(const WebCore::FloatRect& value)
{
return value.isEmpty();
}
static WebCore::FloatRect emptyValue()
{
return { };
}
};
const Markable<WebCore::FloatRect, VisibleRectMarkableTraits> visibleRect() const { return m_visibleRect; }
void setVisibleRect(const WebCore::FloatRect& value) { m_visibleRect = value; }
CALayer *ensureInteractionRegionsContainer();
void removeInteractionRegionsContainer();
void updateInteractionRegionAfterHierarchyChange();
#endif
#if PLATFORM(IOS_FAMILY)
UIView *uiView() const { return m_uiView.get(); }
#endif
WebCore::PlatformLayerIdentifier layerID() const { return m_layerID; }
const WebCore::EventRegion& eventRegion() const { return m_eventRegion; }
void setEventRegion(const WebCore::EventRegion&);
// Non-ancestor scroller that controls positioning of the layer.
WebCore::PlatformLayerIdentifier actingScrollContainerID() const { return m_actingScrollContainerID; }
// Ancestor scrollers that don't affect positioning of the layer.
const Vector<WebCore::PlatformLayerIdentifier>& stationaryScrollContainerIDs() const { return m_stationaryScrollContainerIDs; }
void setActingScrollContainerID(WebCore::PlatformLayerIdentifier value) { m_actingScrollContainerID = value; }
void setStationaryScrollContainerIDs(Vector<WebCore::PlatformLayerIdentifier>&& value) { m_stationaryScrollContainerIDs = WTFMove(value); }
void detachFromParent();
static WebCore::PlatformLayerIdentifier layerID(CALayer *);
static RemoteLayerTreeNode* forCALayer(CALayer *);
static NSString *appendLayerDescription(NSString *description, CALayer *);
#if ENABLE(SCROLLING_THREAD)
WebCore::ScrollingNodeID scrollingNodeID() const { return m_scrollingNodeID; }
void setScrollingNodeID(WebCore::ScrollingNodeID nodeID) { m_scrollingNodeID = nodeID; }
#endif
Markable<WebCore::LayerHostingContextIdentifier> remoteContextHostingIdentifier() const { return m_remoteContextHostingIdentifier; }
Markable<WebCore::LayerHostingContextIdentifier> remoteContextHostedIdentifier() const { return m_remoteContextHostedIdentifier; }
void setRemoteContextHostedIdentifier(WebCore::LayerHostingContextIdentifier identifier) { m_remoteContextHostedIdentifier = identifier; }
void addToHostingNode(RemoteLayerTreeNode&);
void removeFromHostingNode();
// A cached CAIOSurface object to retain CA render resources.
struct CachedContentsBuffer {
BufferAndBackendInfo imageBufferInfo;
RetainPtr<id> buffer;
};
Vector<CachedContentsBuffer> takeCachedContentsBuffers() { return std::exchange(m_cachedContentsBuffers, { }); }
void setCachedContentsBuffers(Vector<CachedContentsBuffer>&& buffers)
{
m_cachedContentsBuffers = WTFMove(buffers);
}
std::optional<WebCore::RenderingResourceIdentifier> asyncContentsIdentifier() const
{
return m_asyncContentsIdentifier;
}
void setAsyncContentsIdentifier(std::optional<WebCore::RenderingResourceIdentifier> identifier)
{
m_asyncContentsIdentifier = identifier;
}
#if ENABLE(THREADED_ANIMATION_RESOLUTION)
void setAcceleratedEffectsAndBaseValues(const WebCore::AcceleratedEffects&, const WebCore::AcceleratedEffectValues&, RemoteLayerTreeHost&);
const RemoteAcceleratedEffectStack* effectStack() const { return m_effectStack.get(); }
RefPtr<RemoteAcceleratedEffectStack> takeEffectStack() { return std::exchange(m_effectStack, nullptr); }
#endif
bool backdropRootIsOpaque() const { return m_backdropRootIsOpaque; }
void setBackdropRootIsOpaque(bool backdropRootIsOpaque) { m_backdropRootIsOpaque = backdropRootIsOpaque; }
private:
void initializeLayer();
WebCore::PlatformLayerIdentifier m_layerID;
Markable<WebCore::LayerHostingContextIdentifier> m_remoteContextHostingIdentifier;
Markable<WebCore::LayerHostingContextIdentifier> m_remoteContextHostedIdentifier;
RetainPtr<CALayer> m_layer;
#if ENABLE(GAZE_GLOW_FOR_INTERACTION_REGIONS)
Markable<WebCore::FloatRect, VisibleRectMarkableTraits> m_visibleRect;
void repositionInteractionRegionsContainerIfNeeded();
enum class InteractionRegionsInSubtree : bool { Yes, Unknown };
void propagateInteractionRegionsChangeInHierarchy(InteractionRegionsInSubtree);
bool hasInteractionRegions() const;
bool hasInteractionRegionsDescendant() const { return m_hasInteractionRegionsDescendant; }
void setHasInteractionRegionsDescendant(bool value) { m_hasInteractionRegionsDescendant = value; }
bool m_hasInteractionRegionsDescendant { false };
RetainPtr<UIView> m_interactionRegionsContainer;
#endif
#if PLATFORM(IOS_FAMILY)
RetainPtr<UIView> m_uiView;
#endif
WebCore::EventRegion m_eventRegion;
#if ENABLE(SCROLLING_THREAD)
WebCore::ScrollingNodeID m_scrollingNodeID;
#endif
WebCore::PlatformLayerIdentifier m_actingScrollContainerID;
Vector<WebCore::PlatformLayerIdentifier> m_stationaryScrollContainerIDs;
Vector<CachedContentsBuffer> m_cachedContentsBuffers;
std::optional<WebCore::RenderingResourceIdentifier> m_asyncContentsIdentifier;
#if ENABLE(THREADED_ANIMATION_RESOLUTION)
RefPtr<RemoteAcceleratedEffectStack> m_effectStack;
#endif
bool m_backdropRootIsOpaque { false };
};
}
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