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/*
* Copyright (C) 2012 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CSSImageSetValue_h
#define CSSImageSetValue_h
#include "core/css/CSSValueList.h"
#include "core/css/parser/CSSParserMode.h"
#include "platform/CrossOriginAttributeValue.h"
#include "platform/loader/fetch/FetchParameters.h"
#include "platform/weborigin/Referrer.h"
#include "platform/wtf/Allocator.h"
namespace blink {
class Document;
class StyleImage;
class CSSImageSetValue : public CSSValueList {
public:
static CSSImageSetValue* Create(CSSParserMode parser_mode) {
return new CSSImageSetValue(parser_mode);
}
~CSSImageSetValue();
bool IsCachePending(float device_scale_factor) const;
StyleImage* CachedImage(float device_scale_factor) const;
StyleImage* CacheImage(
const Document&,
float device_scale_factor,
FetchParameters::PlaceholderImageRequestType,
CrossOriginAttributeValue = kCrossOriginAttributeNotSet);
String CustomCSSText() const;
struct ImageWithScale {
DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
String image_url;
Referrer referrer;
float scale_factor;
};
CSSImageSetValue* ValueWithURLsMadeAbsolute();
bool HasFailedOrCanceledSubresources() const;
void TraceAfterDispatch(blink::Visitor*);
protected:
ImageWithScale BestImageForScaleFactor(float scale_factor);
private:
explicit CSSImageSetValue(CSSParserMode);
void FillImageSet();
static inline bool CompareByScaleFactor(ImageWithScale first,
ImageWithScale second) {
return first.scale_factor < second.scale_factor;
}
float cached_scale_factor_;
Member<StyleImage> cached_image_;
CSSParserMode parser_mode_;
Vector<ImageWithScale> images_in_set_;
};
DEFINE_CSS_VALUE_TYPE_CASTS(CSSImageSetValue, IsImageSetValue());
} // namespace blink
#endif // CSSImageSetValue_h