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/*
Copyright (C) 2004, 2005 Nikolas Zimmermann <wildfox@kde.org>
2004, 2005, 2006 Rob Buis <buis@kde.org>
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 "config.h"
#if ENABLE(SVG)
#include "SVGLocatable.h"
#include "AffineTransform.h"
#include "RenderPath.h"
#include "SVGException.h"
#include "SVGSVGElement.h"
namespace WebCore {
SVGLocatable::SVGLocatable()
{
}
SVGLocatable::~SVGLocatable()
{
}
SVGElement* SVGLocatable::nearestViewportElement(const SVGStyledElement* e)
{
Node* n = e->parentNode();
while (n && !n->isDocumentNode()) {
if (n->hasTagName(SVGNames::svgTag) || n->hasTagName(SVGNames::symbolTag) ||
n->hasTagName(SVGNames::imageTag))
return static_cast<SVGElement*>(n);
#if ENABLE(SVG_FOREIGN_OBJECT)
if (n->hasTagName(SVGNames::foreignObjectTag))
return static_cast<SVGElement*>(n);
#endif
n = n->parentNode();
}
return 0;
}
SVGElement* SVGLocatable::farthestViewportElement(const SVGStyledElement* e)
{
// FIXME : likely this will be always the <svg> farthest away.
// If we have a different implementation of documentElement(), one
// that give the documentElement() of the svg fragment, it could be
// used instead. This depends on cdf demands though(Rob.)
SVGElement* farthest = 0;
Node* n = e->parentNode();
while (n && !n->isDocumentNode()) {
if (n->hasTagName(SVGNames::svgTag) || n->hasTagName(SVGNames::symbolTag) ||
n->hasTagName(SVGNames::imageTag))
farthest = static_cast<SVGElement*>(n);
#if ENABLE(SVG_FOREIGN_OBJECT)
if (n->hasTagName(SVGNames::foreignObjectTag))
farthest = static_cast<SVGElement*>(n);
#endif
n = n->parentNode();
}
return farthest;
}
// Spec:
// http://www.w3.org/TR/2005/WD-SVGMobile12-20050413/svgudom.html#svg::SVGLocatable
FloatRect SVGLocatable::getBBox(const SVGStyledElement* e)
{
FloatRect bboxRect;
if (e && e->renderer()) {
// Need this to make sure we have render object dimensions.
// See bug 11686.
e->document()->updateLayoutIgnorePendingStylesheets();
bboxRect = e->renderer()->relativeBBox(false);
}
return bboxRect;
}
AffineTransform SVGLocatable::getCTM(const SVGElement* element)
{
if (!element)
return AffineTransform();
AffineTransform ctm;
Node* parent = element->parentNode();
if (parent && parent->isSVGElement()) {
SVGElement* parentElement = static_cast<SVGElement*>(parent);
if (parentElement && parentElement->isStyledLocatable()) {
AffineTransform parentCTM = static_cast<SVGStyledLocatableElement*>(parentElement)->getCTM();
ctm = parentCTM * ctm;
}
}
return ctm;
}
AffineTransform SVGLocatable::getScreenCTM(const SVGElement* element)
{
if (!element)
return AffineTransform();
AffineTransform ctm;
Node* parent = element->parentNode();
if (parent && parent->isSVGElement()) {
SVGElement* parentElement = static_cast<SVGElement*>(parent);
if (parentElement && parentElement->isStyledLocatable()) {
AffineTransform parentCTM = static_cast<SVGStyledLocatableElement*>(parentElement)->getScreenCTM();
ctm = parentCTM * ctm;
}
}
return ctm;
}
AffineTransform SVGLocatable::getTransformToElement(SVGElement* target, ExceptionCode& ec) const
{
AffineTransform ctm = getCTM();
if (target && target->isStyledLocatable()) {
AffineTransform targetCTM = static_cast<SVGStyledLocatableElement*>(target)->getCTM();
if (!targetCTM.isInvertible()) {
ec = SVGException::SVG_MATRIX_NOT_INVERTABLE;
return ctm;
}
ctm *= targetCTM.inverse();
}
return ctm;
}
}
#endif // ENABLE(SVG)
// vim:ts=4:noet
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