209 lines
6.5 KiB
C++
209 lines
6.5 KiB
C++
/*
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* Copyright (C) 2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "AffineTransform.h"
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#include "Region.h"
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#include "RenderStyleConstants.h"
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#include "TouchAction.h"
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#include <wtf/OptionSet.h>
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#include <wtf/Vector.h>
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namespace WebCore {
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class EventRegion;
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class RenderStyle;
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class EventRegionContext {
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public:
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explicit EventRegionContext(EventRegion&);
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void pushTransform(const AffineTransform&);
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void popTransform();
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void pushClip(const IntRect&);
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void popClip();
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void unite(const Region&, const RenderStyle&, bool overrideUserModifyIsEditable = false);
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bool contains(const IntRect&) const;
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private:
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EventRegion& m_eventRegion;
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Vector<AffineTransform> m_transformStack;
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Vector<IntRect> m_clipStack;
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};
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class EventRegion {
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public:
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WEBCORE_EXPORT EventRegion();
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EventRegionContext makeContext() { return EventRegionContext(*this); }
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bool isEmpty() const { return m_region.isEmpty(); }
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WEBCORE_EXPORT bool operator==(const EventRegion&) const;
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void unite(const Region&, const RenderStyle&, bool overrideUserModifyIsEditable = false);
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void translate(const IntSize&);
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bool contains(const IntPoint& point) const { return m_region.contains(point); }
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bool contains(const IntRect& rect) const { return m_region.contains(rect); }
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bool intersects(const IntRect& rect) const { return m_region.intersects(rect); }
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const Region& region() const { return m_region; }
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#if ENABLE(TOUCH_ACTION_REGIONS)
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bool hasTouchActions() const { return !m_touchActionRegions.isEmpty(); }
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WEBCORE_EXPORT OptionSet<TouchAction> touchActionsForPoint(const IntPoint&) const;
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const Region* regionForTouchAction(TouchAction) const;
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#endif
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#if ENABLE(WHEEL_EVENT_REGIONS)
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WEBCORE_EXPORT OptionSet<EventListenerRegionType> eventListenerRegionTypesForPoint(const IntPoint&) const;
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const Region& eventListenerRegionForType(EventListenerRegionType) const;
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#endif
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#if ENABLE(EDITABLE_REGION)
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void ensureEditableRegion();
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bool hasEditableRegion() const { return m_editableRegion.has_value(); }
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WEBCORE_EXPORT bool containsEditableElementsInRect(const IntRect&) const;
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Vector<IntRect, 1> rectsForEditableElements() const { return m_editableRegion ? m_editableRegion->rects() : Vector<IntRect, 1> { }; }
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#endif
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template<class Encoder> void encode(Encoder&) const;
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template<class Decoder> static std::optional<EventRegion> decode(Decoder&);
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// FIXME: Remove legacy decode.
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template<class Decoder> static WARN_UNUSED_RETURN bool decode(Decoder&, EventRegion&);
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void dump(TextStream&) const;
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private:
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#if ENABLE(TOUCH_ACTION_REGIONS)
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void uniteTouchActions(const Region&, OptionSet<TouchAction>);
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#endif
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void uniteEventListeners(const Region&, OptionSet<EventListenerRegionType>);
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Region m_region;
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#if ENABLE(TOUCH_ACTION_REGIONS)
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Vector<Region> m_touchActionRegions;
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#endif
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#if ENABLE(WHEEL_EVENT_REGIONS)
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Region m_wheelEventListenerRegion;
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Region m_nonPassiveWheelEventListenerRegion;
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#endif
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#if ENABLE(EDITABLE_REGION)
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std::optional<Region> m_editableRegion;
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#endif
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};
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WEBCORE_EXPORT TextStream& operator<<(TextStream&, const EventRegion&);
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template<class Encoder>
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void EventRegion::encode(Encoder& encoder) const
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{
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encoder << m_region;
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#if ENABLE(WHEEL_EVENT_REGIONS)
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encoder << m_wheelEventListenerRegion;
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encoder << m_nonPassiveWheelEventListenerRegion;
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#endif
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#if ENABLE(TOUCH_ACTION_REGIONS)
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encoder << m_touchActionRegions;
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#endif
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#if ENABLE(EDITABLE_REGION)
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encoder << m_editableRegion;
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#endif
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}
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template<class Decoder>
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std::optional<EventRegion> EventRegion::decode(Decoder& decoder)
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{
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std::optional<Region> region;
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decoder >> region;
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if (!region)
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return std::nullopt;
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EventRegion eventRegion;
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eventRegion.m_region = WTFMove(*region);
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#if ENABLE(WHEEL_EVENT_REGIONS)
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std::optional<Region> wheelEventListenerRegion;
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decoder >> wheelEventListenerRegion;
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if (!wheelEventListenerRegion)
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return std::nullopt;
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eventRegion.m_wheelEventListenerRegion = WTFMove(*wheelEventListenerRegion);
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std::optional<Region> nonPassiveWheelEventListenerRegion;
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decoder >> nonPassiveWheelEventListenerRegion;
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if (!nonPassiveWheelEventListenerRegion)
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return std::nullopt;
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eventRegion.m_nonPassiveWheelEventListenerRegion = WTFMove(*nonPassiveWheelEventListenerRegion);
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#endif
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#if ENABLE(TOUCH_ACTION_REGIONS)
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std::optional<Vector<Region>> touchActionRegions;
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decoder >> touchActionRegions;
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if (!touchActionRegions)
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return std::nullopt;
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eventRegion.m_touchActionRegions = WTFMove(*touchActionRegions);
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#endif
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#if ENABLE(EDITABLE_REGION)
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std::optional<std::optional<Region>> editableRegion;
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decoder >> editableRegion;
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if (!editableRegion)
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return std::nullopt;
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eventRegion.m_editableRegion = WTFMove(*editableRegion);
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#endif
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return eventRegion;
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}
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template<class Decoder>
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bool EventRegion::decode(Decoder& decoder, EventRegion& eventRegion)
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{
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std::optional<EventRegion> decodedEventRegion;
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decoder >> decodedEventRegion;
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if (!decodedEventRegion)
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return false;
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eventRegion = WTFMove(*decodedEventRegion);
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return true;
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}
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#if ENABLE(EDITABLE_REGION)
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inline void EventRegion::ensureEditableRegion()
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{
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if (!m_editableRegion)
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m_editableRegion.emplace();
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}
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#endif
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}
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