blob: ff4858d7aa4d739faefd3421548409bdd4756585 [file] [log] [blame]
/**
* This file is part of the DOM implementation for KDE.
*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
*
* 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 "HTMLImageElement.h"
#include "CSSHelper.h"
#include "CSSPropertyNames.h"
#include "CSSValueKeywords.h"
#include "EventNames.h"
#include "HTMLDocument.h"
#include "HTMLFormElement.h"
#include "HTMLNames.h"
#include "RenderImage.h"
using namespace std;
namespace WebCore {
using namespace EventNames;
using namespace HTMLNames;
HTMLImageElement::HTMLImageElement(Document* doc, HTMLFormElement* f)
: HTMLElement(imgTag, doc)
, m_imageLoader(this)
, ismap(false)
, m_form(f)
, m_compositeOperator(CompositeSourceOver)
{
if (f)
f->registerImgElement(this);
}
HTMLImageElement::HTMLImageElement(const QualifiedName& tagName, Document* doc)
: HTMLElement(tagName, doc)
, m_imageLoader(this)
, ismap(false)
, m_form(0)
, m_compositeOperator(CompositeSourceOver)
{
}
HTMLImageElement::~HTMLImageElement()
{
if (m_form)
m_form->removeImgElement(this);
}
bool HTMLImageElement::mapToEntry(const QualifiedName& attrName, MappedAttributeEntry& result) const
{
if (attrName == widthAttr ||
attrName == heightAttr ||
attrName == vspaceAttr ||
attrName == hspaceAttr ||
attrName == valignAttr) {
result = eUniversal;
return false;
}
if (attrName == borderAttr || attrName == alignAttr) {
result = eReplaced; // Shared with embed and iframe elements.
return false;
}
return HTMLElement::mapToEntry(attrName, result);
}
void HTMLImageElement::parseMappedAttribute(MappedAttribute* attr)
{
const QualifiedName& attrName = attr->name();
if (attrName == altAttr) {
if (renderer() && renderer()->isImage())
static_cast<RenderImage*>(renderer())->updateAltText();
} else if (attrName == srcAttr)
m_imageLoader.updateFromElement();
else if (attrName == widthAttr)
addCSSLength(attr, CSS_PROP_WIDTH, attr->value());
else if (attrName == heightAttr)
addCSSLength(attr, CSS_PROP_HEIGHT, attr->value());
else if (attrName == borderAttr) {
// border="noborder" -> border="0"
if(attr->value().toInt()) {
addCSSLength(attr, CSS_PROP_BORDER_WIDTH, attr->value());
addCSSProperty(attr, CSS_PROP_BORDER_TOP_STYLE, CSS_VAL_SOLID);
addCSSProperty(attr, CSS_PROP_BORDER_RIGHT_STYLE, CSS_VAL_SOLID);
addCSSProperty(attr, CSS_PROP_BORDER_BOTTOM_STYLE, CSS_VAL_SOLID);
addCSSProperty(attr, CSS_PROP_BORDER_LEFT_STYLE, CSS_VAL_SOLID);
}
} else if (attrName == vspaceAttr) {
addCSSLength(attr, CSS_PROP_MARGIN_TOP, attr->value());
addCSSLength(attr, CSS_PROP_MARGIN_BOTTOM, attr->value());
} else if (attrName == hspaceAttr) {
addCSSLength(attr, CSS_PROP_MARGIN_LEFT, attr->value());
addCSSLength(attr, CSS_PROP_MARGIN_RIGHT, attr->value());
} else if (attrName == alignAttr)
addHTMLAlignment(attr);
else if (attrName == valignAttr)
addCSSProperty(attr, CSS_PROP_VERTICAL_ALIGN, attr->value());
else if (attrName == usemapAttr) {
if (attr->value().domString()[0] == '#')
usemap = attr->value();
else
usemap = document()->completeURL(parseURL(attr->value()));
m_isLink = !attr->isNull();
} else if (attrName == ismapAttr)
ismap = true;
else if (attrName == onabortAttr)
setHTMLEventListener(abortEvent, attr);
else if (attrName == onloadAttr)
setHTMLEventListener(loadEvent, attr);
else if (attrName == compositeAttr) {
if (!parseCompositeOperator(attr->value(), m_compositeOperator))
m_compositeOperator = CompositeSourceOver;
} else if (attrName == nameAttr) {
String newNameAttr = attr->value();
if (inDocument() && document()->isHTMLDocument()) {
HTMLDocument* doc = static_cast<HTMLDocument*>(document());
doc->removeNamedItem(oldNameAttr);
doc->addNamedItem(newNameAttr);
}
oldNameAttr = newNameAttr;
} else if (attr->name() == idAttr) {
String newIdAttr = attr->value();
if (inDocument() && document()->isHTMLDocument()) {
HTMLDocument *doc = static_cast<HTMLDocument *>(document());
doc->removeDocExtraNamedItem(oldIdAttr);
doc->addDocExtraNamedItem(newIdAttr);
}
oldIdAttr = newIdAttr;
// also call superclass
HTMLElement::parseMappedAttribute(attr);
} else
HTMLElement::parseMappedAttribute(attr);
}
String HTMLImageElement::altText() const
{
// lets figure out the alt text.. magic stuff
// http://www.w3.org/TR/1998/REC-html40-19980424/appendix/notes.html#altgen
// also heavily discussed by Hixie on bugzilla
String alt = getAttribute(altAttr);
// fall back to title attribute
if (alt.isNull())
alt = getAttribute(titleAttr);
return alt;
}
RenderObject* HTMLImageElement::createRenderer(RenderArena* arena, RenderStyle* style)
{
if (style->contentData())
return RenderObject::createObject(this, style);
return new (arena) RenderImage(this);
}
void HTMLImageElement::attach()
{
HTMLElement::attach();
if (renderer() && renderer()->isImage()) {
RenderImage* imageObj = static_cast<RenderImage*>(renderer());
imageObj->setCachedImage(m_imageLoader.image());
// If we have no image at all because we have no src attribute, set
// image height and width for the alt text instead.
if (!m_imageLoader.image() && !imageObj->cachedImage())
imageObj->setImageSizeForAltText();
}
}
void HTMLImageElement::insertedIntoDocument()
{
if (document()->isHTMLDocument()) {
HTMLDocument* doc = static_cast<HTMLDocument*>(document());
doc->addNamedItem(oldNameAttr);
doc->addDocExtraNamedItem(oldIdAttr);
}
HTMLElement::insertedIntoDocument();
}
void HTMLImageElement::removedFromDocument()
{
if (document()->isHTMLDocument()) {
HTMLDocument* doc = static_cast<HTMLDocument*>(document());
doc->removeNamedItem(oldNameAttr);
doc->removeDocExtraNamedItem(oldIdAttr);
}
HTMLElement::removedFromDocument();
}
int HTMLImageElement::width(bool ignorePendingStylesheets) const
{
if (!renderer()) {
// check the attribute first for an explicit pixel value
bool ok;
int width = getAttribute(widthAttr).toInt(&ok);
if (ok)
return width;
// if the image is available, use its width
if (m_imageLoader.image())
return m_imageLoader.image()->imageSize().width();
}
if (ignorePendingStylesheets)
document()->updateLayoutIgnorePendingStylesheets();
else
document()->updateLayout();
return renderer() ? renderer()->contentWidth() : 0;
}
int HTMLImageElement::height(bool ignorePendingStylesheets) const
{
if (!renderer()) {
// check the attribute first for an explicit pixel value
bool ok;
int height = getAttribute(heightAttr).toInt(&ok);
if (ok)
return height;
// if the image is available, use its height
if (m_imageLoader.image())
return m_imageLoader.image()->imageSize().height();
}
if (ignorePendingStylesheets)
document()->updateLayoutIgnorePendingStylesheets();
else
document()->updateLayout();
return renderer() ? renderer()->contentHeight() : 0;
}
int HTMLImageElement::naturalWidth() const
{
if (!m_imageLoader.image())
return 0;
return m_imageLoader.image()->imageSize().width();
}
int HTMLImageElement::naturalHeight() const
{
if (!m_imageLoader.image())
return 0;
return m_imageLoader.image()->imageSize().height();
}
bool HTMLImageElement::isURLAttribute(Attribute* attr) const
{
return attr->name() == srcAttr
|| attr->name() == lowsrcAttr
|| attr->name() == longdescAttr
|| (attr->name() == usemapAttr && attr->value().domString()[0] != '#');
}
String HTMLImageElement::name() const
{
return getAttribute(nameAttr);
}
void HTMLImageElement::setName(const String& value)
{
setAttribute(nameAttr, value);
}
String HTMLImageElement::align() const
{
return getAttribute(alignAttr);
}
void HTMLImageElement::setAlign(const String& value)
{
setAttribute(alignAttr, value);
}
String HTMLImageElement::alt() const
{
return getAttribute(altAttr);
}
void HTMLImageElement::setAlt(const String& value)
{
setAttribute(altAttr, value);
}
String HTMLImageElement::border() const
{
return getAttribute(borderAttr);
}
void HTMLImageElement::setBorder(const String& value)
{
setAttribute(borderAttr, value);
}
void HTMLImageElement::setHeight(int value)
{
setAttribute(heightAttr, String::number(value));
}
int HTMLImageElement::hspace() const
{
// ### return actual value
return getAttribute(hspaceAttr).toInt();
}
void HTMLImageElement::setHspace(int value)
{
setAttribute(hspaceAttr, String::number(value));
}
bool HTMLImageElement::isMap() const
{
return !getAttribute(ismapAttr).isNull();
}
void HTMLImageElement::setIsMap(bool isMap)
{
setAttribute(ismapAttr, isMap ? "" : 0);
}
String HTMLImageElement::longDesc() const
{
return document()->completeURL(getAttribute(longdescAttr));
}
void HTMLImageElement::setLongDesc(const String& value)
{
setAttribute(longdescAttr, value);
}
String HTMLImageElement::lowsrc() const
{
return document()->completeURL(getAttribute(lowsrcAttr));
}
void HTMLImageElement::setLowsrc(const String& value)
{
setAttribute(lowsrcAttr, value);
}
String HTMLImageElement::src() const
{
return document()->completeURL(getAttribute(srcAttr));
}
void HTMLImageElement::setSrc(const String& value)
{
setAttribute(srcAttr, value);
}
String HTMLImageElement::useMap() const
{
return getAttribute(usemapAttr);
}
void HTMLImageElement::setUseMap(const String& value)
{
setAttribute(usemapAttr, value);
}
int HTMLImageElement::vspace() const
{
// ### return actual vspace
return getAttribute(vspaceAttr).toInt();
}
void HTMLImageElement::setVspace(int value)
{
setAttribute(vspaceAttr, String::number(value));
}
void HTMLImageElement::setWidth(int value)
{
setAttribute(widthAttr, String::number(value));
}
int HTMLImageElement::x() const
{
RenderObject* r = renderer();
if (!r)
return 0;
int x, y;
r->absolutePosition(x, y);
return x;
}
int HTMLImageElement::y() const
{
RenderObject* r = renderer();
if (!r)
return 0;
int x, y;
r->absolutePosition(x, y);
return y;
}
bool HTMLImageElement::complete() const
{
return m_imageLoader.imageComplete();
}
}