/* | |
Copyright (C) 2004, 2005 Nikolas Zimmermann <wildfox@kde.org> | |
2004, 2005, 2006 Rob Buis <buis@kde.org> | |
Copyright (C) 2009 Google, Inc. All rights reserved. | |
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() | |
{ | |
} | |
static bool isViewportElement(Node* node) | |
{ | |
return (node->hasTagName(SVGNames::svgTag) | |
|| node->hasTagName(SVGNames::symbolTag) | |
#if ENABLE(SVG_FOREIGN_OBJECT) | |
|| node->hasTagName(SVGNames::foreignObjectTag) | |
#endif | |
|| node->hasTagName(SVGNames::imageTag)); | |
} | |
SVGElement* SVGLocatable::nearestViewportElement(const SVGElement* element) | |
{ | |
ASSERT(element); | |
for (Node* n = element->parentNode(); n && !n->isDocumentNode(); n = n->parentNode()) { | |
if (isViewportElement(n)) | |
return static_cast<SVGElement*>(n); | |
} | |
return 0; | |
} | |
SVGElement* SVGLocatable::farthestViewportElement(const SVGElement* element) | |
{ | |
ASSERT(element); | |
SVGElement* farthest = 0; | |
for (Node* n = element->parentNode(); n && !n->isDocumentNode(); n = n->parentNode()) { | |
if (isViewportElement(n)) | |
farthest = static_cast<SVGElement*>(n); | |
} | |
return farthest; | |
} | |
FloatRect SVGLocatable::getBBox(const SVGElement* element) | |
{ | |
element->document()->updateLayoutIgnorePendingStylesheets(); | |
// FIXME: Eventually we should support getBBox for detached elements. | |
if (!element->renderer()) | |
return FloatRect(); | |
return element->renderer()->objectBoundingBox(); | |
} | |
AffineTransform SVGLocatable::getCTM(const SVGElement* element) | |
{ | |
ASSERT(element); | |
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) | |
{ | |
ASSERT(element); | |
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 |