third_party/WebKit/Source/core/css/CSSCursorImageValue.h

/*
 * Copyright (C) 2006 Rob Buis <buis@kde.org>
 * Copyright (C) 2008 Apple Inc. All right 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 CSSCursorImageValue_h
#define CSSCursorImageValue_h

#include "core/css/CSSImageValue.h"
#include "core/svg/SVGCursorElement.h"
#include "platform/geometry/IntPoint.h"
#include "wtf/HashSet.h"

namespace blink {

class Element;

class CSSCursorImageValue : public CSSValue {
 public:
  static const CSSCursorImageValue* create(CSSValue* imageValue,
                                           bool hotSpotSpecified,
                                           const IntPoint& hotSpot) {
    return new CSSCursorImageValue(imageValue, hotSpotSpecified, hotSpot);
  }

  ~CSSCursorImageValue();

  bool hotSpotSpecified() const { return m_hotSpotSpecified; }

  IntPoint hotSpot() const { return m_hotSpot; }

  String customCSSText() const;

  SVGCursorElement* getSVGCursorElement(Element*) const;

  void clearImageResource() const;
  bool isCachePending(float deviceScaleFactor) const;
  String cachedImageURL() const;
  StyleImage* cachedImage(float deviceScaleFactor) const;
  StyleImage* cacheImage(const Document&, float deviceScaleFactor);

  bool equals(const CSSCursorImageValue&) const;

  DECLARE_TRACE_AFTER_DISPATCH();

 private:
  CSSCursorImageValue(CSSValue* imageValue,
                      bool hotSpotSpecified,
                      const IntPoint& hotSpot);

  bool hasFragmentInURL() const;

  Member<CSSValue> m_imageValue;

  bool m_hotSpotSpecified;
  IntPoint m_hotSpot;
  mutable bool m_isCachePending;
  mutable Member<StyleImage> m_cachedImage;
};

DEFINE_CSS_VALUE_TYPE_CASTS(CSSCursorImageValue, isCursorImageValue());

}  // namespace blink

#endif  // CSSCursorImageValue_h