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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