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tdegraphics/ksvg/impl/SVGUseElementImpl.cc

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/*
Copyright (C) 2001-2003 KSVG Team
This file is part of the KDE project
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 <kdebug.h>
#include <tqstring.h>
#include "KSVGLoader.h"
#include "KSVGCanvas.h"
#include "SVGRectImpl.h"
#include "SVGEventImpl.h"
#include "SVGHelperImpl.h"
#include "SVGMatrixImpl.h"
#include "SVGDocumentImpl.h"
#include "SVGTransformImpl.h"
#include "SVGSVGElementImpl.h"
#include "SVGUseElementImpl.h"
#include "SVGSymbolElementImpl.h"
#include "SVGTransformListImpl.h"
#include "SVGAnimatedStringImpl.h"
#include "SVGAnimatedLengthImpl.h"
#include "SVGElementInstanceImpl.h"
#include "SVGAnimatedTransformListImpl.h"
using namespace KSVG;
#include "SVGUseElementImpl.lut.h"
#include "ksvg_bridge.h"
#include "ksvg_ecma.h"
SVGUseElementImpl::SVGUseElementImpl(DOM::ElementImpl *impl) : SVGShapeImpl(impl), SVGURIReferenceImpl(), SVGTestsImpl(), SVGLangSpaceImpl(), SVGExternalResourcesRequiredImpl(), SVGStylableImpl(this), SVGTransformableImpl()
{
KSVG_EMPTY_FLAGS
m_x = new SVGAnimatedLengthImpl();
m_x->ref();
m_y = new SVGAnimatedLengthImpl();
m_y->ref();
m_width = new SVGAnimatedLengthImpl();
m_width->ref();
m_height = new SVGAnimatedLengthImpl();
m_height->ref();
m_instanceRoot = 0;
}
SVGUseElementImpl::~SVGUseElementImpl()
{
if(m_x)
m_x->deref();
if(m_y)
m_y->deref();
if(m_width)
m_width->deref();
if(m_height)
m_height->deref();
if(m_instanceRoot)
m_instanceRoot->deref();
}
SVGAnimatedLengthImpl *SVGUseElementImpl::x() const
{
return m_x;
}
SVGAnimatedLengthImpl *SVGUseElementImpl::y() const
{
return m_y;
}
SVGAnimatedLengthImpl *SVGUseElementImpl::width() const
{
return m_width;
}
SVGAnimatedLengthImpl *SVGUseElementImpl::height() const
{
return m_height;
}
// Ecma stuff
/*
@namespace KSVG
@begin SVGUseElementImpl::s_hashTable 11
x SVGUseElementImpl::X DontDelete|ReadOnly
y SVGUseElementImpl::Y DontDelete|ReadOnly
width SVGUseElementImpl::Width DontDelete|ReadOnly
height SVGUseElementImpl::Height DontDelete|ReadOnly
href SVGUseElementImpl::Href DontDelete|ReadOnly
instanceRoot SVGUseElementImpl::InstanceRoot DontDelete|ReadOnly
animatedInstanceRoot SVGUseElementImpl::AnimatedInstanceRoot DontDelete|ReadOnly
@end
*/
Value SVGUseElementImpl::getValueProperty(ExecState *exec, int token) const
{
KSVG_CHECK_ATTRIBUTE
switch(token)
{
case X:
if(!attributeMode)
return m_x->cache(exec);
else
return Number(m_x->baseVal()->value());
case Y:
if(!attributeMode)
return m_y->cache(exec);
else
return Number(m_y->baseVal()->value());
case Width:
if(!attributeMode)
return m_width->cache(exec);
else
return Number(m_width->baseVal()->value());
case Height:
if(!attributeMode)
return m_height->cache(exec);
else
return Number(m_height->baseVal()->value());
default:
kdWarning() << "Unhandled token in " << k_funcinfo << " : " << token << endl;
return Undefined();
}
}
void SVGUseElementImpl::putValueProperty(ExecState *exec, int token, const Value &value, int attr)
{
// This class has just ReadOnly properties, only with the Internal flag set
// it's allowed to modify those.
if(!(attr & KJS::Internal))
return;
switch(token)
{
case X:
x()->baseVal()->setValue(value.toNumber(exec));
break;
case Y:
y()->baseVal()->setValue(value.toNumber(exec));
break;
case Width:
width()->baseVal()->setValue(value.toNumber(exec));
break;
case Height:
height()->baseVal()->setValue(value.toNumber(exec));
break;
case Href:
{
TQString url = value.toString(exec).qstring();
href()->setBaseVal(SVGURIReferenceImpl::getTarget(url));
break;
}
default:
kdWarning() << "Unhandled token in " << k_funcinfo << " : " << token << endl;
}
}
SVGRectImpl *SVGUseElementImpl::getBBox()
{
if(m_instanceRoot)
{
SVGShapeImpl *shape = dynamic_cast<SVGShapeImpl *>(m_instanceRoot->correspondingElement());
if(KSVG_TOKEN_NOT_PARSED(Width) && KSVG_TOKEN_NOT_PARSED(Height) && shape)
return shape->getBBox();
}
SVGRectImpl *ret = new SVGRectImpl();
ret->ref();
ret->setX(m_x->baseVal()->value());
ret->setY(m_y->baseVal()->value());
ret->setWidth(m_width->baseVal()->value());
ret->setHeight(m_height->baseVal()->value());
return ret;
}
SVGElementInstanceImpl *SVGUseElementImpl::instanceRoot() const
{
return m_instanceRoot;
}
SVGElementInstanceImpl *SVGUseElementImpl::animatedInstanceRoot() const
{
return m_animatedInstanceRoot;
}
void SVGUseElementImpl::createItem(KSVGCanvas *c)
{
if(!m_instanceRoot)
{
// ownerSVGElement()->getElementById() is wrong here.
// It could reference elements from other documents when using getURL (Niko)
TQString filename, id;
DOM::DOMString url = getAttribute("href");
if(!SVGURIReferenceImpl::parseURIReference(url.string(), filename, id))
return;
SVGElementImpl *orig;
if(!filename.isEmpty())
{
KURL fragmentUrl(ownerDoc()->baseUrl(), url.string());
id = fragmentUrl.ref();
fragmentUrl.setRef(TQString());
orig = KSVGLoader::getSVGFragment(fragmentUrl, ownerDoc(), id);
}
else
{
orig = ownerDoc()->getElementByIdRecursive(ownerSVGElement(), href()->baseVal());
if(orig == 0)
{
// The document will try to create this item again once the parsing has finished.
ownerDoc()->addForwardReferencingUseElement(this);
}
}
if(orig == 0)
return;
setReferencedElement(orig);
// Create a parent, a <g>
SVGElementImpl *parent = 0;
DOM::Element impl = static_cast<DOM::Document *>(ownerDoc())->createElement("g");
parent = SVGDocumentImpl::createElement("g", impl, ownerDoc());
SVGElementImpl *clone = orig->cloneNode(true);
// Apply the use-correction
TQString trans;
trans += " translate(";
trans += TQString::number(x()->baseVal()->value());
trans += " ";
trans += TQString::number(y()->baseVal()->value());
trans += ")";
// Apply the transform attribute and render the element
parent->setAttributeInternal("transform", trans);
parent->setAttribute("transform", trans);
// Apply width/height if symbol
if(dynamic_cast<SVGSymbolElementImpl *>(clone))
{
DOM::Element impl = static_cast<DOM::Document *>(ownerDoc())->createElement("svg");
SVGElementImpl *symbolSvg = SVGDocumentImpl::createElement("svg", impl, ownerDoc());
SVGHelperImpl::copyAttributes(orig, symbolSvg);
symbolSvg->setAttribute("width", getAttribute("width"));
symbolSvg->setAttributeInternal("width", getAttribute("width"));
symbolSvg->setAttribute("height", getAttribute("height"));
symbolSvg->setAttributeInternal("height", getAttribute("height"));
DOM::Node node = clone->firstChild();
for(; !node.isNull(); node = clone->firstChild())
symbolSvg->appendChild(node);
clone = symbolSvg;
}
else if(dynamic_cast<SVGSVGElementImpl *>(clone))
{
if(!getAttribute("width").isEmpty())
{
clone->setAttribute("width", getAttribute("width"));
clone->setAttributeInternal("width", getAttribute("width"));
}
if(!getAttribute("height").isEmpty())
{
clone->setAttribute("height", getAttribute("height"));
clone->setAttributeInternal("height", getAttribute("height"));
}
}
appendChild(*parent);
parent->appendChild(*clone);
setupSubtree(parent, ownerSVGElement(), viewportElement());
m_instanceRoot->setCorrespondingElement(clone);
dynamic_cast<SVGLocatableImpl *>(parent)->updateCachedScreenCTM(screenCTM());
// Redirect local ecma event handlers to the correspondingElement
TQPtrListIterator<SVGRegisteredEventListener> it(eventListeners());
SVGRegisteredEventListener *eventListener;
while((eventListener = it.current()) != 0)
{
++it;
clone->setEventListener(eventListener->id, eventListener->listener);
}
}
if(m_instanceRoot)
{
SVGElementImpl *element = m_instanceRoot->correspondingElement();
element->createItem(c);
}
}
void SVGUseElementImpl::removeItem(KSVGCanvas *c)
{
if(m_instanceRoot)
{
SVGElementImpl *element = m_instanceRoot->correspondingElement();
element->removeItem(c);
}
}
void SVGUseElementImpl::setupSubtree(SVGElementImpl *element, SVGSVGElementImpl *ownerSVG, SVGElementImpl *viewport)
{
element->setOwnerSVGElement(ownerSVG);
element->setViewportElement(viewport);
element->setAttributes();
SVGSVGElementImpl *thisSVG = dynamic_cast<SVGSVGElementImpl *>(element);
if(thisSVG != 0)
{
ownerSVG = thisSVG;
viewport = element;
}
DOM::Node child = element->firstChild();
for(; !child.isNull(); child = child.nextSibling())
{
SVGElementImpl *childElement = ownerDoc()->getElementFromHandle(child.handle());
if(childElement != 0)
setupSubtree(childElement, ownerSVG, viewport);
}
}
void SVGUseElementImpl::setReferencedElement(SVGElementImpl *referenced)
{
if(!referenced)
return;
if(!m_instanceRoot)
{
m_instanceRoot = new SVGElementInstanceImpl();
m_instanceRoot->ref();
}
m_instanceRoot->setCorrespondingElement(referenced);
}
void SVGUseElementImpl::update(CanvasItemUpdate reason, int param1, int param2)
{
if(m_instanceRoot)
{
SVGShapeImpl *shape = dynamic_cast<SVGShapeImpl *>(m_instanceRoot->correspondingElement());
if(shape)
shape->update(reason, param1, param2);
}
}
void SVGUseElementImpl::invalidate(KSVGCanvas *c, bool recalc)
{
if(m_instanceRoot)
{
SVGShapeImpl *shape = dynamic_cast<SVGShapeImpl *>(m_instanceRoot->correspondingElement());
if(shape)
shape->invalidate(c, recalc);
}
}
void SVGUseElementImpl::setReferenced(bool referenced)
{
if(m_instanceRoot)
{
SVGShapeImpl *shape = dynamic_cast<SVGShapeImpl *>(m_instanceRoot->correspondingElement());
if(shape)
shape->setReferenced(referenced);
}
}
void SVGUseElementImpl::draw()
{
if(m_instanceRoot)
{
SVGShapeImpl *shape = dynamic_cast<SVGShapeImpl *>(m_instanceRoot->correspondingElement());
if(shape)
shape->draw();
}
}