third_party/WebKit/Source/core/layout/LayoutImageResource.h

   1 /*
   2  * Copyright (C) 1999 Lars Knoll <knoll@kde.org>
   3  * Copyright (C) 1999 Antti Koivisto <koivisto@kde.org>
   4  * Copyright (C) 2006 Allan Sandfeld Jensen <kde@carewolf.com>
   5  * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
   6  * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010 Apple Inc. All rights reserved.
   7  * Copyright (C) 2010 Patrick Gansterer <paroga@paroga.com>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Library General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Library General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Library General Public License
  20  * along with this library; see the file COPYING.LIB.  If not, write to
  21  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  22  * Boston, MA 02110-1301, USA.
  23  *
  24  */
  25
  26 #ifndef LayoutImageResource_h
  27 #define LayoutImageResource_h
  28
  29 #include "core/fetch/ImageResource.h"
  30 #include "core/fetch/ResourcePtr.h"
  31 #include "core/style/StyleImage.h"
  32
  33 namespace blink {
  34
  35 class LayoutObject;
  36
  37 class LayoutImageResource : public NoBaseWillBeGarbageCollectedFinalized<LayoutImageResource> {
  38     WTF_MAKE_NONCOPYABLE(LayoutImageResource);
  39     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(LayoutImageResource);
  40 public:
  41     virtual ~LayoutImageResource();
  42
  43     static PassOwnPtrWillBeRawPtr<LayoutImageResource> create()
  44     {
  45         return adoptPtrWillBeNoop(new LayoutImageResource);
  46     }
  47
  48     virtual void initialize(LayoutObject*);
  49     virtual void shutdown();
  50
  51     void setImageResource(ImageResource*);
  52     ImageResource* cachedImage() const { return m_cachedImage.get(); }
  53     virtual bool hasImage() const { return m_cachedImage; }
  54
  55     void resetAnimation();
  56
  57     virtual PassRefPtr<Image> image(int /* width */ = 0, int /* height */ = 0) const
  58     {
  59         return m_cachedImage ? m_cachedImage->imageForLayoutObject(m_layoutObject) : Image::nullImage();
  60     }
  61     virtual bool errorOccurred() const { return m_cachedImage && m_cachedImage->errorOccurred(); }
  62
  63     virtual void setContainerSizeForLayoutObject(const IntSize&);
  64     virtual bool imageHasRelativeWidth() const { return m_cachedImage ? m_cachedImage->imageHasRelativeWidth() : false; }
  65     virtual bool imageHasRelativeHeight() const { return m_cachedImage ? m_cachedImage->imageHasRelativeHeight() : false; }
  66
  67     virtual LayoutSize imageSize(float multiplier) const { return getImageSize(multiplier, ImageResource::NormalSize); }
  68     virtual LayoutSize intrinsicSize(float multiplier) const { return getImageSize(multiplier, ImageResource::IntrinsicSize); }
  69
  70     virtual WrappedImagePtr imagePtr() const { return m_cachedImage.get(); }
  71
  72     DEFINE_INLINE_VIRTUAL_TRACE() { }
  73
  74 protected:
  75     LayoutImageResource();
  76     LayoutObject* m_layoutObject;
  77     ResourcePtr<ImageResource> m_cachedImage;
  78
  79 private:
  80     LayoutSize getImageSize(float multiplier, ImageResource::SizeType) const;
  81 };
  82
  83 } // namespace blink
  84
  85 #endif // LayoutImage_h