third_party/WebKit/Source/core/html/HTMLAreaElement.h

/*
 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
 * Copyright (C) 2004, 2008, 2009, 2011 Apple Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#ifndef HTMLAreaElement_h
#define HTMLAreaElement_h

#include "core/CoreExport.h"
#include "core/html/HTMLAnchorElement.h"
#include "platform/geometry/LayoutRect.h"

namespace blink {

class HitTestResult;
class HTMLImageElement;
class Path;

class CORE_EXPORT HTMLAreaElement final : public HTMLAnchorElement {
    DEFINE_WRAPPERTYPEINFO();
public:
    DECLARE_NODE_FACTORY(HTMLAreaElement);

    bool isDefault() const { return m_shape == Default; }

    bool pointInArea(LayoutPoint, const LayoutSize& containerSize);

    LayoutRect computeRect(const LayoutObject*) const;
    Path computePath(const LayoutObject*) const;

    // The parent map's image.
    HTMLImageElement* imageElement() const;

private:
    explicit HTMLAreaElement(Document&);
    ~HTMLAreaElement();

    void parseAttribute(const QualifiedName&, const AtomicString&, const AtomicString&) override;
    bool isKeyboardFocusable() const override;
    bool isMouseFocusable() const override;
    bool layoutObjectIsFocusable() const override;
    void updateFocusAppearance(SelectionBehaviorOnFocus) override;
    void setFocus(bool) override;

    enum Shape { Default, Poly, Rect, Circle, Unknown };
    Path getRegion(const LayoutSize&) const;
    void invalidateCachedRegion();

    OwnPtr<Path> m_region;
    Vector<Length> m_coords;
    LayoutSize m_lastSize;
    Shape m_shape;
};

} // namespace blink

#endif // HTMLAreaElement_h