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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 "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/Vector.h>
OBJC_CLASS CALayer;
OBJC_CLASS NSString;
#if PLATFORM(IOS_FAMILY)
OBJC_CLASS UIView;
#endif
namespace WebKit {
class RemoteLayerTreeScrollbars;
class RemoteLayerTreeNode : public CanMakeWeakPtr<RemoteLayerTreeNode> {
WTF_MAKE_FAST_ALLOCATED;
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(INTERACTION_REGIONS_IN_EVENT_REGION)
CALayer *interactionRegionsLayer() const { return m_interactionRegionsLayer.get(); }
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; }
#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; }
// 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(const WebCore::RenderingResourceIdentifier& identifier)
{
m_asyncContentsIdentifier = identifier;
}
private:
void initializeLayer();
WebCore::PlatformLayerIdentifier m_layerID;
Markable<WebCore::LayerHostingContextIdentifier> m_remoteContextHostingIdentifier;
Markable<WebCore::LayerHostingContextIdentifier> m_remoteContextHostedIdentifier;
RetainPtr<CALayer> m_layer;
#if ENABLE(INTERACTION_REGIONS_IN_EVENT_REGION)
RetainPtr<CALayer> m_interactionRegionsLayer;
Markable<WebCore::FloatRect, VisibleRectMarkableTraits> m_visibleRect;
#endif
#if PLATFORM(IOS_FAMILY)
RetainPtr<UIView> m_uiView;
#endif
WebCore::EventRegion m_eventRegion;
#if ENABLE(SCROLLING_THREAD)
WebCore::ScrollingNodeID m_scrollingNodeID { 0 };
#endif
WebCore::PlatformLayerIdentifier m_actingScrollContainerID;
Vector<WebCore::PlatformLayerIdentifier> m_stationaryScrollContainerIDs;
Vector<CachedContentsBuffer> m_cachedContentsBuffers;
std::optional<WebCore::RenderingResourceIdentifier> m_asyncContentsIdentifier;
};
}
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