HTMLImageElement.cpp [plain text]
#include "config.h"
#include "HTMLImageElement.h"
#include "Attribute.h"
#include "CSSPropertyNames.h"
#include "CSSValueKeywords.h"
#include "EventNames.h"
#include "FrameView.h"
#include "HTMLDocument.h"
#include "HTMLFormElement.h"
#include "HTMLNames.h"
#include "HTMLParserIdioms.h"
#include "RenderImage.h"
#include "ScriptEventListener.h"
using namespace std;
namespace WebCore {
using namespace HTMLNames;
HTMLImageElement::HTMLImageElement(const QualifiedName& tagName, Document* document, HTMLFormElement* form)
: HTMLElement(tagName, document)
, m_imageLoader(this)
, m_form(form)
, m_compositeOperator(CompositeSourceOver)
{
ASSERT(hasTagName(imgTag));
if (form)
form->registerImgElement(this);
}
PassRefPtr<HTMLImageElement> HTMLImageElement::create(Document* document)
{
return adoptRef(new HTMLImageElement(imgTag, document));
}
PassRefPtr<HTMLImageElement> HTMLImageElement::create(const QualifiedName& tagName, Document* document, HTMLFormElement* form)
{
return adoptRef(new HTMLImageElement(tagName, document, form));
}
HTMLImageElement::~HTMLImageElement()
{
if (m_form)
m_form->removeImgElement(this);
}
PassRefPtr<HTMLImageElement> HTMLImageElement::createForJSConstructor(Document* document, const int* optionalWidth, const int* optionalHeight)
{
RefPtr<HTMLImageElement> image = adoptRef(new HTMLImageElement(imgTag, document));
if (optionalWidth)
image->setWidth(*optionalWidth);
if (optionalHeight)
image->setHeight(*optionalHeight);
return image.release();
}
bool HTMLImageElement::isPresentationAttribute(const QualifiedName& name) const
{
if (name == widthAttr || name == heightAttr || name == borderAttr || name == vspaceAttr || name == hspaceAttr || name == alignAttr || name == valignAttr)
return true;
return HTMLElement::isPresentationAttribute(name);
}
void HTMLImageElement::collectStyleForAttribute(Attribute* attr, StylePropertySet* style)
{
if (attr->name() == widthAttr)
addHTMLLengthToStyle(style, CSSPropertyWidth, attr->value());
else if (attr->name() == heightAttr)
addHTMLLengthToStyle(style, CSSPropertyHeight, attr->value());
else if (attr->name() == borderAttr)
applyBorderAttributeToStyle(attr, style);
else if (attr->name() == vspaceAttr) {
addHTMLLengthToStyle(style, CSSPropertyMarginTop, attr->value());
addHTMLLengthToStyle(style, CSSPropertyMarginBottom, attr->value());
} else if (attr->name() == hspaceAttr) {
addHTMLLengthToStyle(style, CSSPropertyMarginLeft, attr->value());
addHTMLLengthToStyle(style, CSSPropertyMarginRight, attr->value());
} else if (attr->name() == alignAttr)
applyAlignmentAttributeToStyle(attr, style);
else if (attr->name() == valignAttr)
addPropertyToAttributeStyle(style, CSSPropertyVerticalAlign, attr->value());
else
HTMLElement::collectStyleForAttribute(attr, style);
}
void HTMLImageElement::parseAttribute(Attribute* attr)
{
const QualifiedName& attrName = attr->name();
if (attrName == altAttr) {
if (renderer() && renderer()->isImage())
toRenderImage(renderer())->updateAltText();
} else if (attrName == srcAttr)
m_imageLoader.updateFromElementIgnoringPreviousError();
else if (attrName == usemapAttr)
setIsLink(!attr->isNull());
else if (attrName == onloadAttr)
setAttributeEventListener(eventNames().loadEvent, createAttributeEventListener(this, attr));
else if (attrName == onbeforeloadAttr)
setAttributeEventListener(eventNames().beforeloadEvent, createAttributeEventListener(this, attr));
else if (attrName == compositeAttr) {
if (!parseCompositeOperator(attr->value(), m_compositeOperator))
m_compositeOperator = CompositeSourceOver;
} else
HTMLElement::parseAttribute(attr);
}
String HTMLImageElement::altText() const
{
String alt = getAttribute(altAttr);
if (alt.isNull())
alt = getAttribute(titleAttr);
return alt;
}
RenderObject* HTMLImageElement::createRenderer(RenderArena* arena, RenderStyle* style)
{
if (style->hasContent())
return RenderObject::createObject(this, style);
RenderImage* image = new (arena) RenderImage(this);
image->setImageResource(RenderImageResource::create());
return image;
}
void HTMLImageElement::attach()
{
HTMLElement::attach();
if (renderer() && renderer()->isImage() && !m_imageLoader.hasPendingBeforeLoadEvent()) {
RenderImage* renderImage = toRenderImage(renderer());
RenderImageResource* renderImageResource = renderImage->imageResource();
if (renderImageResource->hasImage())
return;
renderImageResource->setCachedImage(m_imageLoader.image());
if (!m_imageLoader.image() && !renderImageResource->cachedImage())
renderImage->setImageSizeForAltText();
}
}
Node::InsertionNotificationRequest HTMLImageElement::insertedInto(Node* insertionPoint)
{
if (!m_form) {
for (ContainerNode* ancestor = parentNode(); ancestor; ancestor = ancestor->parentNode()) {
if (ancestor->hasTagName(formTag)) {
m_form = static_cast<HTMLFormElement*>(ancestor);
m_form->registerImgElement(this);
break;
}
}
}
if (insertionPoint->inDocument() && !m_imageLoader.image())
m_imageLoader.updateFromElement();
return HTMLElement::insertedInto(insertionPoint);
}
void HTMLImageElement::removedFrom(Node* insertionPoint)
{
if (m_form)
m_form->removeImgElement(this);
m_form = 0;
HTMLElement::removedFrom(insertionPoint);
}
int HTMLImageElement::width(bool ignorePendingStylesheets)
{
if (!renderer()) {
bool ok;
int width = getAttribute(widthAttr).toInt(&ok);
if (ok)
return width;
if (m_imageLoader.image())
return m_imageLoader.image()->imageSizeForRenderer(renderer(), 1.0f).width();
}
if (ignorePendingStylesheets)
document()->updateLayoutIgnorePendingStylesheets();
else
document()->updateLayout();
RenderBox* box = renderBox();
return box ? adjustForAbsoluteZoom(box->contentBoxRect().pixelSnappedWidth(), box) : 0;
}
int HTMLImageElement::height(bool ignorePendingStylesheets)
{
if (!renderer()) {
bool ok;
int height = getAttribute(heightAttr).toInt(&ok);
if (ok)
return height;
if (m_imageLoader.image())
return m_imageLoader.image()->imageSizeForRenderer(renderer(), 1.0f).height();
}
if (ignorePendingStylesheets)
document()->updateLayoutIgnorePendingStylesheets();
else
document()->updateLayout();
RenderBox* box = renderBox();
return box ? adjustForAbsoluteZoom(box->contentBoxRect().pixelSnappedHeight(), box) : 0;
}
int HTMLImageElement::naturalWidth() const
{
if (!m_imageLoader.image())
return 0;
return m_imageLoader.image()->imageSizeForRenderer(renderer(), 1.0f).width();
}
int HTMLImageElement::naturalHeight() const
{
if (!m_imageLoader.image())
return 0;
return m_imageLoader.image()->imageSizeForRenderer(renderer(), 1.0f).height();
}
bool HTMLImageElement::isURLAttribute(Attribute* attr) const
{
return attr->name() == srcAttr
|| attr->name() == lowsrcAttr
|| attr->name() == longdescAttr
|| (attr->name() == usemapAttr && attr->value().string()[0] != '#')
|| HTMLElement::isURLAttribute(attr);
}
const AtomicString& HTMLImageElement::alt() const
{
return getAttribute(altAttr);
}
bool HTMLImageElement::draggable() const
{
return !equalIgnoringCase(getAttribute(draggableAttr), "false");
}
void HTMLImageElement::setHeight(int value)
{
setAttribute(heightAttr, String::number(value));
}
KURL HTMLImageElement::src() const
{
return document()->completeURL(getAttribute(srcAttr));
}
void HTMLImageElement::setSrc(const String& value)
{
setAttribute(srcAttr, value);
}
void HTMLImageElement::setWidth(int value)
{
setAttribute(widthAttr, String::number(value));
}
int HTMLImageElement::x() const
{
RenderObject* r = renderer();
if (!r)
return 0;
FloatPoint absPos = r->localToAbsolute();
return absPos.x();
}
int HTMLImageElement::y() const
{
RenderObject* r = renderer();
if (!r)
return 0;
FloatPoint absPos = r->localToAbsolute();
return absPos.y();
}
bool HTMLImageElement::complete() const
{
return m_imageLoader.imageComplete();
}
void HTMLImageElement::addSubresourceAttributeURLs(ListHashSet<KURL>& urls) const
{
HTMLElement::addSubresourceAttributeURLs(urls);
addSubresourceURL(urls, src());
addSubresourceURL(urls, document()->completeURL(getAttribute(usemapAttr)));
}
void HTMLImageElement::didMoveToNewDocument(Document* oldDocument)
{
m_imageLoader.elementDidMoveToNewDocument();
HTMLElement::didMoveToNewDocument(oldDocument);
}
bool HTMLImageElement::isServerMap() const
{
if (!fastHasAttribute(ismapAttr))
return false;
const AtomicString& usemap = fastGetAttribute(usemapAttr);
if (usemap.string()[0] == '#')
return false;
return document()->completeURL(stripLeadingAndTrailingHTMLSpaces(usemap)).isEmpty();
}
#if ENABLE(MICRODATA)
String HTMLImageElement::itemValueText() const
{
return getURLAttribute(srcAttr);
}
void HTMLImageElement::setItemValueText(const String& value, ExceptionCode&)
{
setAttribute(srcAttr, value);
}
#endif
}