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/*
* Copyright (C) 2014 Yoav Weiss <yoav@yoav.ws>
*
* 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.
*/
#include "config.h"
#include "SourceSizeList.h"
#include "CSSParser.h"
#include "CSSToLengthConversionData.h"
#include "Document.h"
#include "MediaList.h"
#include "MediaQuery.h"
#include "MediaQueryEvaluator.h"
#include "RenderObject.h"
#include "RenderStyle.h"
#include "RenderView.h"
namespace WebCore {
#if ENABLE(PICTURE_SIZES)
bool SourceSize::match(RenderStyle& style, Frame* frame)
{
if (m_mediaExp->mediaFeature().isEmpty())
return true;
auto expList = std::make_unique<Vector<std::unique_ptr<MediaQueryExp>>>();
expList->append(m_mediaExp.release());
RefPtr<MediaQuerySet> mediaQuerySet = MediaQuerySet::create();
mediaQuerySet->addMediaQuery(std::make_unique<MediaQuery>(MediaQuery::None, "all", WTF::move(expList)));
MediaQueryEvaluator mediaQueryEvaluator("screen", frame, &style);
return mediaQueryEvaluator.eval(mediaQuerySet.get());
}
static unsigned computeLength(CSSParserValue& value, RenderStyle& style, RenderView* view)
{
CSSToLengthConversionData conversionData(&style, &style, view);
if (CSSParser::isCalculation(&value)) {
CSSParserValueList* args = value.function->args.get();
if (args && args->size()) {
RefPtr<CSSCalcValue> calcValue = CSSCalcValue::create(value.function->name, *args, CalculationRangeNonNegative);
Length length(calcValue->createCalculationValue(conversionData));
RefPtr<CSSPrimitiveValue> primitiveValue = CSSPrimitiveValue::create(length, &style);
return primitiveValue->computeLength<unsigned>(conversionData);
}
}
RefPtr<CSSValue> cssValue = value.createCSSValue();
RefPtr<CSSPrimitiveValue> primitiveValue = toCSSPrimitiveValue(cssValue.get());
return primitiveValue->computeLength<unsigned>(conversionData);
}
static unsigned defaultValue(RenderStyle& style, RenderView* view)
{
const unsigned defaultSizesAttributeValueInVW = 100;
CSSParserValue value;
value.id = CSSValueInvalid;
value.isInt = true;
value.fValue = defaultSizesAttributeValueInVW;
value.unit = CSSPrimitiveValue::CSS_VW;
return computeLength(value, style, view);
}
unsigned SourceSize::length(RenderStyle& style, RenderView* view)
{
return computeLength(m_length, style, view);
}
unsigned SourceSizeList::parseSizesAttribute(const String& sizesAttribute, RenderView* view, Frame* frame)
{
if (!view)
return 0;
CSSParser parser(CSSStrictMode);
std::unique_ptr<SourceSizeList> sourceSizeList = parser.parseSizesAttribute(sizesAttribute);
if (!sourceSizeList)
return defaultValue(view->style(), view);
return sourceSizeList->getEffectiveSize(view->style(), view, frame);
}
unsigned SourceSizeList::getEffectiveSize(RenderStyle& style, RenderView* view, Frame* frame)
{
for (int i = m_list.size() - 1; i >= 0; --i) {
SourceSize* sourceSize = m_list[i].get();
if (sourceSize->match(style, frame))
return sourceSize->length(style, view);
}
return defaultValue(style, view);
}
#endif
} // namespace WebCore
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