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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
      4  * Copyright (C) 2013 Google Inc. All rights reserved.
      5  *
      6  * This library is free software; you can redistribute it and/or
      7  * modify it under the terms of the GNU Library General Public
      8  * License as published by the Free Software Foundation; either
      9  * version 2 of the License, or (at your option) any later version.
     10  *
     11  * This library is distributed in the hope that it will be useful,
     12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  * Library General Public License for more details.
     15  *
     16  * You should have received a copy of the GNU Library General Public License
     17  * along with this library; see the file COPYING.LIB.  If not, write to
     18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     19  * Boston, MA 02110-1301, USA.
     20  *
     21  */
     22 
     23 #ifndef ElementStyleResources_h
     24 #define ElementStyleResources_h
     25 
     26 #include "core/CSSPropertyNames.h"
     27 #include "platform/graphics/Color.h"
     28 #include "platform/heap/Handle.h"
     29 #include "wtf/HashMap.h"
     30 #include "wtf/Noncopyable.h"
     31 
     32 namespace WebCore {
     33 
     34 class CSSCursorImageValue;
     35 class CSSImageValue;
     36 class CSSImageGeneratorValue;
     37 class CSSImageSetValue;
     38 class CSSSVGDocumentValue;
     39 class CSSValue;
     40 class FilterOperation;
     41 class StyleImage;
     42 class TextLinkColors;
     43 
     44 typedef WillBeHeapHashMap<FilterOperation*, RefPtrWillBeMember<CSSSVGDocumentValue> > PendingSVGDocumentMap;
     45 typedef WillBeHeapHashMap<CSSPropertyID, RefPtrWillBeMember<CSSValue> > PendingImagePropertyMap;
     46 
     47 // Holds information about resources, requested by stylesheets.
     48 // Lifetime: per-element style resolve.
     49 class ElementStyleResources {
     50 STACK_ALLOCATED();
     51 WTF_MAKE_NONCOPYABLE(ElementStyleResources);
     52 public:
     53     ElementStyleResources();
     54 
     55     PassRefPtr<StyleImage> styleImage(Document&, const TextLinkColors&, Color currentColor, CSSPropertyID, CSSValue*);
     56 
     57     PassRefPtr<StyleImage> generatedOrPendingFromValue(CSSPropertyID, CSSImageGeneratorValue*);
     58     PassRefPtr<StyleImage> cachedOrPendingFromValue(Document&, CSSPropertyID, CSSImageValue*);
     59     PassRefPtr<StyleImage> setOrPendingFromValue(CSSPropertyID, CSSImageSetValue*);
     60     PassRefPtr<StyleImage> cursorOrPendingFromValue(CSSPropertyID, CSSCursorImageValue*);
     61 
     62     const PendingImagePropertyMap& pendingImageProperties() const { return m_pendingImageProperties; }
     63     const PendingSVGDocumentMap& pendingSVGDocuments() const { return m_pendingSVGDocuments; }
     64 
     65     void clearPendingImageProperties();
     66     void clearPendingSVGDocuments();
     67 
     68     float deviceScaleFactor() const { return m_deviceScaleFactor; }
     69     void setDeviceScaleFactor(float deviceScaleFactor) { m_deviceScaleFactor = deviceScaleFactor; }
     70 
     71     void addPendingSVGDocument(FilterOperation*, CSSSVGDocumentValue*);
     72 
     73 private:
     74     PendingImagePropertyMap m_pendingImageProperties;
     75     PendingSVGDocumentMap m_pendingSVGDocuments;
     76     float m_deviceScaleFactor;
     77 };
     78 
     79 } // namespace WebCore
     80 
     81 #endif // ElementStyleResources_h
     82