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

   1 /*
   2  * Copyright (C) 2006 Rob Buis <buis@kde.org>
   3  * Copyright (C) 2008 Apple Inc. All right reserved.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public License
  16  * along with this library; see the file COPYING.LIB.  If not, write to
  17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18  * Boston, MA 02110-1301, USA.
  19  */
  20
  21 #ifndef CSSCursorImageValue_h
  22 #define CSSCursorImageValue_h
  23
  24 #include "core/css/CSSImageValue.h"
  25 #include "platform/geometry/IntPoint.h"
  26 #include "wtf/HashSet.h"
  27
  28 namespace blink {
  29
  30 class Element;
  31 class SVGElement;
  32
  33 class CSSCursorImageValue : public CSSValue {
  34 public:
  35     static PassRefPtrWillBeRawPtr<CSSCursorImageValue> create(PassRefPtrWillBeRawPtr<CSSValue> imageValue, bool hotSpotSpecified, const IntPoint& hotSpot)
  36     {
  37         return adoptRefWillBeNoop(new CSSCursorImageValue(imageValue, hotSpotSpecified, hotSpot));
  38     }
  39
  40     ~CSSCursorImageValue();
  41
  42     bool hotSpotSpecified() const { return m_hotSpotSpecified; }
  43
  44     IntPoint hotSpot() const { return m_hotSpot; }
  45
  46     String customCSSText() const;
  47
  48     bool updateIfSVGCursorIsUsed(Element*);
  49     StyleImage* cachedImage(Document*, float deviceScaleFactor);
  50     StyleImage* cachedOrPendingImage(float deviceScaleFactor);
  51
  52 #if !ENABLE(OILPAN)
  53     void removeReferencedElement(SVGElement*);
  54 #endif
  55
  56     bool equals(const CSSCursorImageValue&) const;
  57
  58     DECLARE_TRACE_AFTER_DISPATCH();
  59
  60 private:
  61     CSSCursorImageValue(PassRefPtrWillBeRawPtr<CSSValue> imageValue, bool hotSpotSpecified, const IntPoint& hotSpot);
  62
  63     bool isSVGCursor() const;
  64     String cachedImageURL();
  65     void clearImageResource();
  66
  67     RefPtrWillBeMember<CSSValue> m_imageValue;
  68
  69     bool m_hotSpotSpecified;
  70     IntPoint m_hotSpot;
  71     RefPtrWillBeMember<StyleImage> m_image;
  72     bool m_accessedImage;
  73
  74 #if !ENABLE(OILPAN)
  75     HashSet<SVGElement*> m_referencedElements;
  76 #endif
  77 };
  78
  79 DEFINE_CSS_VALUE_TYPE_CASTS(CSSCursorImageValue, isCursorImageValue());
  80
  81 } // namespace blink
  82
  83 #endif // CSSCursorImageValue_h