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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.
*/
#ifndef SVGLocatableImpl_H
#define SVGLocatableImpl_H
#include "ksvg_lookup.h"
namespace KSVG
{
class SVGRectImpl;
class SVGMatrixImpl;
class SVGElementImpl;
class SVGLocatableImpl
{
public:
SVGLocatableImpl();
virtual ~SVGLocatableImpl();
SVGElementImpl *nearestViewportElement() const { return m_nearestViewportElement; }
SVGElementImpl *farthestViewportElement() const{ return m_farthestViewportElement; }
virtual SVGRectImpl *getBBox();
virtual SVGMatrixImpl *getCTM();
virtual SVGMatrixImpl *getScreenCTM();
// Faster access for when a new copy isn't required.
const SVGMatrixImpl *screenCTM() const { return m_cachedScreenCTM; }
SVGMatrixImpl *getTransformToElement(SVGElementImpl *element);
// The local transformations concatenated together. 0 if
// there are no local transformations.
virtual const SVGMatrixImpl *localMatrix() { return 0; }
bool cachedScreenCTMIsValid() const { return m_cachedScreenCTMIsValid; }
void invalidateCachedMatrices() { m_cachedScreenCTMIsValid = false; }
// If the cached matrix is invalid, update it and update any child elements
// recursively. Otherwise, check child elements recursively.
virtual void checkCachedScreenCTM(const SVGMatrixImpl *parentScreenCTM);
// Update the cached matrix, and update child element cached matrices,
// recursively.
virtual void updateCachedScreenCTM(const SVGMatrixImpl *parentScreenCTM);
// Called immediately after the screen ctm has been updated.
virtual void onScreenCTMUpdated() {}
protected:
SVGElementImpl *m_nearestViewportElement;
SVGElementImpl *m_farthestViewportElement;
SVGMatrixImpl *m_cachedScreenCTM;
bool m_cachedScreenCTMIsValid;
public:
KSVG_BASECLASS_GET
enum
{
// Properties
NearestViewportElement, FarthestViewportElement,
// Functions
GetBBox, GetCTM, GetScreenCTM, GetTransformToElement
};
KJS::Value getValueProperty(KJS::ExecState *exec, int token) const;
};
}
KSVG_DEFINE_PROTOTYPE(SVGLocatableImplProto)
KSVG_IMPLEMENT_PROTOFUNC(SVGLocatableImplProtoFunc, SVGLocatableImpl)
#endif
// vim:ts=4:noet
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