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/*
* Copyright (C) 2000 Lars Knoll (knoll@kde.org)
* (C) 2000 Antti Koivisto (koivisto@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2003, 2005, 2006, 2007, 2008 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 StyleImage_h
#define StyleImage_h
#include "CSSValue.h"
#include "FloatSize.h"
#include "Image.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class CachedImage;
class CSSValue;
class RenderElement;
class RenderObject;
typedef const void* WrappedImagePtr;
class StyleImage : public RefCounted<StyleImage> {
public:
virtual ~StyleImage() { }
bool operator==(const StyleImage& other) const
{
return data() == other.data();
}
virtual PassRefPtr<CSSValue> cssValue() const = 0;
virtual bool canRender(const RenderObject*, float /*multiplier*/) const { return true; }
virtual bool isLoaded() const { return true; }
virtual bool errorOccurred() const { return false; }
virtual FloatSize imageSize(const RenderElement*, float multiplier) const = 0;
virtual void computeIntrinsicDimensions(const RenderElement*, Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio) = 0;
virtual bool imageHasRelativeWidth() const = 0;
virtual bool imageHasRelativeHeight() const = 0;
virtual bool usesImageContainerSize() const = 0;
virtual void setContainerSizeForRenderer(const RenderElement*, const FloatSize&, float) = 0;
virtual void addClient(RenderElement*) = 0;
virtual void removeClient(RenderElement*) = 0;
virtual PassRefPtr<Image> image(RenderElement*, const FloatSize&) const = 0;
virtual WrappedImagePtr data() const = 0;
virtual float imageScaleFactor() const { return 1; }
virtual bool knownToBeOpaque(const RenderElement*) const = 0;
virtual CachedImage* cachedImage() const { return 0; }
ALWAYS_INLINE bool isCachedImage() const { return m_isCachedImage; }
ALWAYS_INLINE bool isPendingImage() const { return m_isPendingImage; }
ALWAYS_INLINE bool isGeneratedImage() const { return m_isGeneratedImage; }
ALWAYS_INLINE bool isCachedImageSet() const { return m_isCachedImageSet; }
static bool imagesEquivalent(StyleImage* image1, StyleImage* image2)
{
return image1 == image2 || (image1 && image2 && *image1 == *image2);
}
protected:
StyleImage()
: m_isCachedImage(false)
, m_isPendingImage(false)
, m_isGeneratedImage(false)
, m_isCachedImageSet(false)
{
}
bool m_isCachedImage : 1;
bool m_isPendingImage : 1;
bool m_isGeneratedImage : 1;
bool m_isCachedImageSet : 1;
};
#define STYLE_IMAGE_TYPE_CASTS(ToClassName, FromClassName, predicate) \
TYPE_CASTS_BASE(ToClassName, FromClassName, styleImage, styleImage->predicate(), styleImage.predicate())
}
#endif
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