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/*
* Copyright (C) 2019 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 "AffineTransform.h"
#include "FloatRoundedRect.h"
#include "IntRect.h"
#include "IntRectHash.h"
#include "InteractionRegion.h"
#include "Node.h"
#include "Region.h"
#include "RegionContext.h"
#include "RenderStyleConstants.h"
#include "TouchAction.h"
#include <wtf/ArgumentCoder.h>
#include <wtf/OptionSet.h>
#include <wtf/Ref.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/Vector.h>
namespace WebCore {
class EventRegion;
class Path;
class RenderObject;
class RenderStyle;
class EventRegionContext final : public RegionContext {
WTF_MAKE_TZONE_ALLOCATED_EXPORT(EventRegionContext, WEBCORE_EXPORT);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(EventRegionContext);
public:
WEBCORE_EXPORT explicit EventRegionContext(EventRegion&);
WEBCORE_EXPORT virtual ~EventRegionContext();
bool isEventRegionContext() const final { return true; }
WEBCORE_EXPORT void unite(const FloatRoundedRect&, RenderObject&, const RenderStyle&, bool overrideUserModifyIsEditable = false);
bool contains(const IntRect&) const;
#if ENABLE(INTERACTION_REGIONS_IN_EVENT_REGION)
void uniteInteractionRegions(RenderObject&, const FloatRect&, const FloatSize&, const std::optional<AffineTransform>&);
bool shouldConsolidateInteractionRegion(RenderObject&, const IntRect&, const ElementIdentifier&);
void convertGuardContainersToInterationIfNeeded(float minimumCornerRadius);
void removeSuperfluousInteractionRegions();
void shrinkWrapInteractionRegions();
void copyInteractionRegionsToEventRegion(float minimumCornerRadius);
#endif
private:
EventRegion& m_eventRegion;
#if ENABLE(INTERACTION_REGIONS_IN_EVENT_REGION)
Vector<InteractionRegion> m_interactionRegions;
UncheckedKeyHashMap<IntRect, InteractionRegion::ContentHint> m_interactionRectsAndContentHints;
UncheckedKeyHashSet<IntRect> m_occlusionRects;
enum class Inflated : bool { No, Yes };
UncheckedKeyHashMap<IntRect, Inflated> m_guardRects;
UncheckedKeyHashSet<ElementIdentifier> m_containerRemovalCandidates;
UncheckedKeyHashSet<ElementIdentifier> m_containersToRemove;
UncheckedKeyHashMap<ElementIdentifier, Vector<InteractionRegion>> m_discoveredRegionsByElement;
#endif
};
#if ENABLE(TOUCH_EVENT_REGIONS)
struct TouchEventListenerRegion {
bool operator==(const TouchEventListenerRegion&) const = default;
bool isEmpty() const { return start.isEmpty() && end.isEmpty() && move.isEmpty() && cancel.isEmpty(); }
Region start;
Region end;
Region move;
Region cancel;
};
WEBCORE_EXPORT TextStream& operator<<(TextStream&, const TouchEventListenerRegion&);
#endif
class EventRegion {
public:
WEBCORE_EXPORT EventRegion();
WEBCORE_EXPORT EventRegion(Region&&
#if ENABLE(TOUCH_ACTION_REGIONS)
, Vector<WebCore::Region> touchActionRegions
#endif
#if ENABLE(WHEEL_EVENT_REGIONS)
, WebCore::Region wheelEventListenerRegion
, WebCore::Region nonPassiveWheelEventListenerRegion
#endif
#if ENABLE(TOUCH_EVENT_REGIONS)
, TouchEventListenerRegion touchEventListenerRegion
, TouchEventListenerRegion nonPassiveTouchEventListenerRegion
#endif
#if ENABLE(EDITABLE_REGION)
, std::optional<WebCore::Region>
#endif
#if ENABLE(INTERACTION_REGIONS_IN_EVENT_REGION)
, Vector<WebCore::InteractionRegion>
#endif
);
EventRegionContext makeContext() { return EventRegionContext(*this); }
bool isEmpty() const { return m_region.isEmpty(); }
friend bool operator==(const EventRegion&, const EventRegion&) = default;
void unite(const Region&, RenderObject&, const RenderStyle&, bool overrideUserModifyIsEditable = false);
void translate(const IntSize&);
bool contains(const IntPoint& point) const { return m_region.contains(point); }
bool contains(const IntRect& rect) const { return m_region.contains(rect); }
bool intersects(const IntRect& rect) const { return m_region.intersects(rect); }
const Region& region() const { return m_region; }
#if ENABLE(TOUCH_ACTION_REGIONS)
bool hasTouchActions() const { return !m_touchActionRegions.isEmpty(); }
WEBCORE_EXPORT OptionSet<TouchAction> touchActionsForPoint(const IntPoint&) const;
const Region* regionForTouchAction(TouchAction) const;
#endif
#if ENABLE(WHEEL_EVENT_REGIONS)
WEBCORE_EXPORT OptionSet<EventListenerRegionType> eventListenerRegionTypesForPoint(const IntPoint&) const;
const Region& eventListenerRegionForType(EventListenerRegionType) const;
#endif
#if ENABLE(EDITABLE_REGION)
void ensureEditableRegion();
bool hasEditableRegion() const { return m_editableRegion.has_value(); }
WEBCORE_EXPORT bool containsEditableElementsInRect(const IntRect&) const;
Vector<IntRect, 1> rectsForEditableElements() const { return m_editableRegion ? m_editableRegion->rects() : Vector<IntRect, 1> { }; }
#endif
void dump(TextStream&) const;
#if ENABLE(INTERACTION_REGIONS_IN_EVENT_REGION)
const Vector<InteractionRegion>& interactionRegions() const { return m_interactionRegions; }
void appendInteractionRegions(const Vector<InteractionRegion>&);
void clearInteractionRegions();
#endif
private:
friend struct IPC::ArgumentCoder<EventRegion, void>;
#if ENABLE(TOUCH_ACTION_REGIONS)
void uniteTouchActions(const Region&, OptionSet<TouchAction>);
#endif
void uniteEventListeners(const Region&, OptionSet<EventListenerRegionType>);
Region m_region;
#if ENABLE(TOUCH_ACTION_REGIONS)
Vector<Region> m_touchActionRegions;
#endif
#if ENABLE(WHEEL_EVENT_REGIONS)
Region m_wheelEventListenerRegion;
Region m_nonPassiveWheelEventListenerRegion;
#endif
#if ENABLE(TOUCH_EVENT_REGIONS)
TouchEventListenerRegion m_touchEventListenerRegion;
TouchEventListenerRegion m_nonPassiveTouchEventListenerRegion;
#endif
#if ENABLE(EDITABLE_REGION)
std::optional<Region> m_editableRegion;
#endif
#if ENABLE(INTERACTION_REGIONS_IN_EVENT_REGION)
Vector<InteractionRegion> m_interactionRegions;
#endif
};
WEBCORE_EXPORT TextStream& operator<<(TextStream&, const EventRegion&);
#if ENABLE(EDITABLE_REGION)
inline void EventRegion::ensureEditableRegion()
{
if (!m_editableRegion)
m_editableRegion.emplace();
}
#endif
}
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::EventRegionContext)
static bool isType(const WebCore::RegionContext& regionContext) { return regionContext.isEventRegionContext(); }
SPECIALIZE_TYPE_TRAITS_END()
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