HTMLPictureElement.cpp [plain text]
#include "config.h"
#include "HTMLPictureElement.h"
#include "ElementChildIterator.h"
#include "HTMLImageElement.h"
#include "HTMLNames.h"
namespace WebCore {
HTMLPictureElement::HTMLPictureElement(const QualifiedName& tagName, Document& document)
: HTMLElement(tagName, document)
{
}
HTMLPictureElement::~HTMLPictureElement()
{
document().removeViewportDependentPicture(*this);
}
void HTMLPictureElement::didMoveToNewDocument(Document* oldDocument)
{
if (oldDocument)
oldDocument->removeViewportDependentPicture(*this);
HTMLElement::didMoveToNewDocument(oldDocument);
sourcesChanged();
}
Ref<HTMLPictureElement> HTMLPictureElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new HTMLPictureElement(tagName, document));
}
void HTMLPictureElement::sourcesChanged()
{
for (auto& imageElement : childrenOfType<HTMLImageElement>(*this))
imageElement.selectImageSource();
}
bool HTMLPictureElement::viewportChangeAffectedPicture()
{
MediaQueryEvaluator evaluator(document().printing() ? "print" : "screen", document().frame(), document().documentElement() ? document().documentElement()->computedStyle() : nullptr);
unsigned numResults = m_viewportDependentMediaQueryResults.size();
for (unsigned i = 0; i < numResults; i++) {
if (evaluator.eval(&m_viewportDependentMediaQueryResults[i]->m_expression) != m_viewportDependentMediaQueryResults[i]->m_result)
return true;
}
return false;
}
}