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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef HitRegion_h
#define HitRegion_h
#include "core/dom/Element.h"
#include "core/html/canvas/HitRegionOptions.h"
#include "platform/graphics/Path.h"
#include "platform/heap/Handle.h"
#include "wtf/Noncopyable.h"
#include "wtf/OwnPtr.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefPtr.h"
namespace blink {
class HitRegion final : public RefCountedWillBeGarbageCollectedFinalized<HitRegion> {
public:
static PassRefPtrWillBeRawPtr<HitRegion> create(const Path& path, const HitRegionOptions& options)
{
return adoptRefWillBeNoop(new HitRegion(path, options));
}
virtual ~HitRegion() { }
void removePixels(const Path&);
void updateAccessibility(Element* canvas);
bool contains(const LayoutPoint&) const;
bool contains(const FloatPoint&) const;
const String& id() const { return m_id; }
const Path& path() const { return m_path; }
Element* control() const { return m_control.get(); }
WindRule fillRule() const { return m_fillRule; }
void trace(Visitor*);
private:
HitRegion(const Path&, const HitRegionOptions&);
String m_id;
RefPtrWillBeMember<Element> m_control;
Path m_path;
WindRule m_fillRule;
};
class HitRegionManager final : public NoBaseWillBeGarbageCollected<HitRegionManager> {
WTF_MAKE_NONCOPYABLE(HitRegionManager);
DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(HitRegionManager)
public:
static PassOwnPtrWillBeRawPtr<HitRegionManager> create() { return adoptPtrWillBeNoop(new HitRegionManager()); }
void addHitRegion(PassRefPtrWillBeRawPtr<HitRegion>);
void removeHitRegion(HitRegion*);
void removeHitRegionById(const String& id);
void removeHitRegionByControl(Element*);
void removeHitRegionsInRect(const FloatRect&, const AffineTransform&);
void removeAllHitRegions();
HitRegion* getHitRegionById(const String& id) const;
HitRegion* getHitRegionByControl(Element*) const;
HitRegion* getHitRegionAtPoint(const LayoutPoint&) const;
unsigned getHitRegionsCount() const;
void trace(Visitor*);
private:
HitRegionManager() { }
typedef WillBeHeapListHashSet<RefPtrWillBeMember<HitRegion>> HitRegionList;
typedef HitRegionList::const_reverse_iterator HitRegionIterator;
typedef WillBeHeapHashMap<String, RefPtrWillBeMember<HitRegion>> HitRegionIdMap;
typedef WillBeHeapHashMap<RefPtrWillBeMember<Element>, RefPtrWillBeMember<HitRegion>> HitRegionControlMap;
HitRegionList m_hitRegionList;
HitRegionIdMap m_hitRegionIdMap;
HitRegionControlMap m_hitRegionControlMap;
};
} // namespace blink
#endif
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