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tdelibs/khtml/html/html_imageimpl.cpp

561 lines
16 KiB

/**
* 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)
*
* 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 "html/html_imageimpl.h"
#include "html/html_formimpl.h"
#include "html/html_documentimpl.h"
#include "misc/htmlhashes.h"
#include "khtmlview.h"
#include "khtml_part.h"
#include <kstringhandler.h>
#include <kglobal.h>
#include <kdebug.h>
#include "rendering/render_image.h"
#include "rendering/render_flow.h"
#include "css/cssstyleselector.h"
#include "css/cssproperties.h"
#include "css/cssvalues.h"
#include "css/csshelper.h"
#include "xml/dom2_eventsimpl.h"
#include <tqstring.h>
#include <tqpoint.h>
#include <tqregion.h>
#include <tqptrstack.h>
#include <tqimage.h>
#include <tqpointarray.h>
using namespace DOM;
using namespace khtml;
// -------------------------------------------------------------------------
HTMLImageElementImpl::HTMLImageElementImpl(DocumentImpl *doc, HTMLFormElementImpl *f)
: HTMLElementImpl(doc), ismap(false), loadEventSent(true), m_image(0), m_form(f)
{
if (m_form)
m_form->registerImgElement(this);
}
HTMLImageElementImpl::~HTMLImageElementImpl()
{
if (getDocument())
getDocument()->removeImage(this);
if (m_image)
m_image->deref(this);
if (m_form)
m_form->removeImgElement(this);
}
NodeImpl::Id HTMLImageElementImpl::id() const
{
return ID_IMG;
}
void HTMLImageElementImpl::parseAttribute(AttributeImpl *attr)
{
switch (attr->id())
{
case ATTR_ALT:
setChanged();
break;
case ATTR_SRC: {
setChanged();
//Start loading the image already, to generate events
DOMString url = attr->value();
if (!url.isEmpty()) { //### why do we not hide or something when setting this?
CachedImage* newImage = getDocument()->docLoader()->requestImage(khtml::parseURL(url));
if (newImage && newImage != m_image) {
CachedImage* oldImage = m_image;
loadEventSent = false;
m_image = newImage;
m_image->ref(this);
if (oldImage)
oldImage->deref(this);
}
}
}
break;
case ATTR_WIDTH:
if (!attr->value().isEmpty())
addCSSLength(CSS_PROP_WIDTH, attr->value());
else
removeCSSProperty(CSS_PROP_WIDTH);
break;
case ATTR_HEIGHT:
if (!attr->value().isEmpty())
addCSSLength(CSS_PROP_HEIGHT, attr->value());
else
removeCSSProperty(CSS_PROP_HEIGHT);
break;
case ATTR_BORDER:
// border="noborder" -> border="0"
if(attr->value().toInt()) {
addCSSLength(CSS_PROP_BORDER_WIDTH, attr->value());
addCSSProperty( CSS_PROP_BORDER_TOP_STYLE, CSS_VAL_SOLID );
addCSSProperty( CSS_PROP_BORDER_RIGHT_STYLE, CSS_VAL_SOLID );
addCSSProperty( CSS_PROP_BORDER_BOTTOM_STYLE, CSS_VAL_SOLID );
addCSSProperty( CSS_PROP_BORDER_LEFT_STYLE, CSS_VAL_SOLID );
} else {
removeCSSProperty( CSS_PROP_BORDER_WIDTH );
removeCSSProperty( CSS_PROP_BORDER_TOP_STYLE );
removeCSSProperty( CSS_PROP_BORDER_RIGHT_STYLE );
removeCSSProperty( CSS_PROP_BORDER_BOTTOM_STYLE );
removeCSSProperty( CSS_PROP_BORDER_LEFT_STYLE );
}
break;
case ATTR_VSPACE:
addCSSLength(CSS_PROP_MARGIN_TOP, attr->value());
addCSSLength(CSS_PROP_MARGIN_BOTTOM, attr->value());
break;
case ATTR_HSPACE:
addCSSLength(CSS_PROP_MARGIN_LEFT, attr->value());
addCSSLength(CSS_PROP_MARGIN_RIGHT, attr->value());
break;
case ATTR_ALIGN:
addHTMLAlignment( attr->value() );
break;
case ATTR_VALIGN:
addCSSProperty(CSS_PROP_VERTICAL_ALIGN, attr->value().lower());
break;
case ATTR_USEMAP:
if ( attr->value()[0] == '#' )
usemap = attr->value().lower();
else {
TQString url = getDocument()->completeURL( khtml::parseURL( attr->value() ).string() );
// ### we remove the part before the anchor and hope
// the map is on the same html page....
usemap = url;
}
m_hasAnchor = attr->val() != 0;
case ATTR_ISMAP:
ismap = true;
break;
case ATTR_ONABORT: // ### add support for this
setHTMLEventListener(EventImpl::ABORT_EVENT,
getDocument()->createHTMLEventListener(attr->value().string(), "onabort", this));
break;
case ATTR_ONERROR:
setHTMLEventListener(EventImpl::ERROR_EVENT,
getDocument()->createHTMLEventListener(attr->value().string(), "onerror", this));
break;
case ATTR_ONLOAD:
setHTMLEventListener(EventImpl::LOAD_EVENT,
getDocument()->createHTMLEventListener(attr->value().string(), "onload", this));
break;
case ATTR_NOSAVE:
break;
case ATTR_NAME:
if (inDocument() && m_name != attr->value()) {
getDocument()->underDocNamedCache().remove(m_name.string(), this);
getDocument()->underDocNamedCache().add (attr->value().string(), this);
}
m_name = attr->value();
//fallthrough
default:
HTMLElementImpl::parseAttribute(attr);
}
}
void HTMLImageElementImpl::notifyFinished(CachedObject *finishedObj)
{
if (m_image == finishedObj) {
getDocument()->dispatchImageLoadEventSoon(this);
}
}
void HTMLImageElementImpl::dispatchLoadEvent()
{
if (!loadEventSent) {
loadEventSent = true;
if (m_image->isErrorImage()) {
dispatchHTMLEvent(EventImpl::ERROR_EVENT, false, false);
} else {
dispatchHTMLEvent(EventImpl::LOAD_EVENT, false, false);
}
}
}
DOMString HTMLImageElementImpl::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
DOMString alt( getAttribute( ATTR_ALT ) );
// fall back to title attribute
if ( alt.isNull() )
alt = getAttribute( ATTR_TITLE );
#if 0
if ( alt.isNull() ) {
TQString p = KURL( getDocument()->completeURL( getAttribute(ATTR_SRC).string() ) ).prettyURL();
int pos;
if ( ( pos = p.findRev( '.' ) ) > 0 )
p.truncate( pos );
alt = DOMString( KStringHandler::csqueeze( p ) );
}
#endif
return alt;
}
void HTMLImageElementImpl::attach()
{
assert(!attached());
assert(!m_render);
assert(parentNode());
RenderStyle* _style = getDocument()->styleSelector()->styleForElement(this);
_style->ref();
if (parentNode()->renderer() && parentNode()->renderer()->childAllowed() &&
_style->display() != NONE)
{
m_render = new (getDocument()->renderArena()) RenderImage(this);
m_render->setStyle(_style);
parentNode()->renderer()->addChild(m_render, nextRenderer());
}
_style->deref();
NodeBaseImpl::attach();
if (m_render)
m_render->updateFromElement();
}
void HTMLImageElementImpl::removedFromDocument()
{
getDocument()->underDocNamedCache().remove(m_name.string(), this);
HTMLElementImpl::removedFromDocument();
}
void HTMLImageElementImpl::insertedIntoDocument()
{
getDocument()->underDocNamedCache().add(m_name.string(), this);
HTMLElementImpl::insertedIntoDocument();
}
void HTMLImageElementImpl::removeId(const TQString& id)
{
getDocument()->underDocNamedCache().remove(id, this);
HTMLElementImpl::removeId(id);
}
void HTMLImageElementImpl::addId (const TQString& id)
{
getDocument()->underDocNamedCache().add(id, this);
HTMLElementImpl::addId(id);
}
long HTMLImageElementImpl::width() const
{
if (!m_render) {
DOMString widthAttr = getAttribute(ATTR_WIDTH);
if (!widthAttr.isNull())
return widthAttr.toInt();
else if (m_image && m_image->pixmap_size().isValid())
return m_image->pixmap_size().width();
else
return 0;
}
// ### make a unified call for this
if (changed()) {
getDocument()->updateRendering();
if (getDocument()->view())
getDocument()->view()->layout();
}
return m_render ? m_render->contentWidth() :
getAttribute(ATTR_WIDTH).toInt();
}
long HTMLImageElementImpl::height() const
{
if (!m_render) {
DOMString heightAttr = getAttribute(ATTR_HEIGHT);
if (!heightAttr.isNull())
return heightAttr.toInt();
else if (m_image && m_image->pixmap_size().isValid())
return m_image->pixmap_size().height();
else
return 0;
}
// ### make a unified call for this
if (changed()) {
getDocument()->updateRendering();
if (getDocument()->view())
getDocument()->view()->layout();
}
return m_render ? m_render->contentHeight() :
getAttribute(ATTR_HEIGHT).toInt();
}
TQImage HTMLImageElementImpl::currentImage() const
{
RenderImage *r = static_cast<RenderImage*>(renderer());
if(r)
return r->pixmap().convertToImage();
return TQImage();
}
TQPixmap HTMLImageElementImpl::currentPixmap() const
{
RenderImage *r = static_cast<RenderImage*>(renderer());
if(r)
return r->pixmap();
return TQPixmap();
}
bool HTMLImageElementImpl::complete() const
{
return m_image && m_image->valid_rect().size() == m_image->pixmap_size();
}
// -------------------------------------------------------------------------
HTMLMapElementImpl::HTMLMapElementImpl(DocumentImpl *doc)
: HTMLElementImpl(doc)
{
}
HTMLMapElementImpl::~HTMLMapElementImpl()
{
if(getDocument() && getDocument()->isHTMLDocument())
static_cast<HTMLDocumentImpl*>(getDocument())->mapMap.remove(name);
}
NodeImpl::Id HTMLMapElementImpl::id() const
{
return ID_MAP;
}
bool
HTMLMapElementImpl::mapMouseEvent(int x_, int y_, int width_, int height_,
RenderObject::NodeInfo& info)
{
//cout << "map:mapMouseEvent " << endl;
//cout << x_ << " " << y_ <<" "<< width_ <<" "<< height_ << endl;
TQPtrStack<NodeImpl> nodeStack;
NodeImpl *current = firstChild();
while(1)
{
if(!current)
{
if(nodeStack.isEmpty()) break;
current = nodeStack.pop();
current = current->nextSibling();
continue;
}
if(current->id()==ID_AREA)
{
//cout << "area found " << endl;
HTMLAreaElementImpl* area=static_cast<HTMLAreaElementImpl*>(current);
if (area->mapMouseEvent(x_,y_,width_,height_, info))
return true;
}
NodeImpl *child = current->firstChild();
if(child)
{
nodeStack.push(current);
current = child;
}
else
{
current = current->nextSibling();
}
}
return false;
}
void HTMLMapElementImpl::parseAttribute(AttributeImpl *attr)
{
switch (attr->id())
{
case ATTR_ID:
if (getDocument()->htmlMode() != DocumentImpl::XHtml) {
HTMLElementImpl::parseAttribute(attr);
break;
}
else {
// add name with full url:
TQString url = getDocument()->completeURL( khtml::parseURL( attr->value() ).string() );
if(getDocument()->isHTMLDocument())
static_cast<HTMLDocumentImpl*>(getDocument())->mapMap[url] = this;
}
// fall through
case ATTR_NAME:
{
DOMString s = attr->value();
if(*s.unicode() == '#')
name = TQString(s.unicode()+1, s.length()-1).lower();
else
name = s.string().lower();
// ### make this work for XML documents, e.g. in case of <html:map...>
if(getDocument()->isHTMLDocument())
static_cast<HTMLDocumentImpl*>(getDocument())->mapMap[name] = this;
//fallthrough
}
default:
HTMLElementImpl::parseAttribute(attr);
}
}
// -------------------------------------------------------------------------
HTMLAreaElementImpl::HTMLAreaElementImpl(DocumentImpl *doc)
: HTMLAnchorElementImpl(doc)
{
m_coords=0;
m_coordsLen = 0;
nohref = false;
shape = Unknown;
lasth = lastw = -1;
}
HTMLAreaElementImpl::~HTMLAreaElementImpl()
{
delete [] m_coords;
}
NodeImpl::Id HTMLAreaElementImpl::id() const
{
return ID_AREA;
}
void HTMLAreaElementImpl::parseAttribute(AttributeImpl *attr)
{
switch (attr->id())
{
case ATTR_SHAPE:
if ( strcasecmp( attr->value(), "default" ) == 0 )
shape = Default;
else if ( strcasecmp( attr->value(), "circle" ) == 0 )
shape = Circle;
else if ( strcasecmp( attr->value(), "poly" ) == 0 || strcasecmp( attr->value(), "polygon" ) == 0 )
shape = Poly;
else if ( strcasecmp( attr->value(), "rect" ) == 0 )
shape = Rect;
break;
case ATTR_COORDS:
delete [] m_coords;
m_coords = attr->val()->toCoordsArray(m_coordsLen);
break;
case ATTR_NOHREF:
nohref = attr->val() != 0;
break;
case ATTR_TARGET:
m_hasTarget = attr->val() != 0;
break;
case ATTR_ALT:
break;
case ATTR_ACCESSKEY:
break;
default:
HTMLAnchorElementImpl::parseAttribute(attr);
}
}
bool HTMLAreaElementImpl::mapMouseEvent(int x_, int y_, int width_, int height_,
RenderObject::NodeInfo& info)
{
bool inside = false;
if (width_ != lastw || height_ != lasth)
{
region=getRegion(width_, height_);
lastw=width_; lasth=height_;
}
if (region.contains(TQPoint(x_,y_)))
{
inside = true;
info.setInnerNode(this);
info.setURLElement(this);
}
return inside;
}
TQRect HTMLAreaElementImpl::getRect() const
{
if (parentNode()->renderer()==0)
return TQRect();
int dx, dy;
if (!parentNode()->renderer()->absolutePosition(dx, dy))
return TQRect();
TQRegion region = getRegion(lastw,lasth);
region.translate(dx, dy);
return region.boundingRect();
}
TQRegion HTMLAreaElementImpl::getRegion(int width_, int height_) const
{
TQRegion region;
if (!m_coords)
return region;
// added broken HTML support (Dirk): some pages omit the SHAPE
// attribute, so we try to guess by looking at the coords count
// what the HTML author tried to tell us.
// a Poly needs at least 3 points (6 coords), so this is correct
if ((shape==Poly || shape==Unknown) && m_coordsLen > 5) {
// make sure its even
int len = m_coordsLen >> 1;
TQPointArray points(len);
for (int i = 0; i < len; ++i)
points.setPoint(i, m_coords[(i<<1)].minWidth(width_),
m_coords[(i<<1)+1].minWidth(height_));
region = TQRegion(points);
}
else if ((shape==Circle && m_coordsLen>=3) || (shape==Unknown && m_coordsLen == 3)) {
int r = kMin(m_coords[2].minWidth(width_), m_coords[2].minWidth(height_));
region = TQRegion(m_coords[0].minWidth(width_)-r,
m_coords[1].minWidth(height_)-r, 2*r, 2*r,TQRegion::Ellipse);
}
else if ((shape==Rect && m_coordsLen>=4) || (shape==Unknown && m_coordsLen == 4)) {
int x0 = m_coords[0].minWidth(width_);
int y0 = m_coords[1].minWidth(height_);
int x1 = m_coords[2].minWidth(width_);
int y1 = m_coords[3].minWidth(height_);
region = TQRegion(x0,y0,x1-x0,y1-y0);
}
else if (shape==Default)
region = TQRegion(0,0,width_,height_);
// else
// return null region
return region;
}