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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.
+
+
+    This file includes excerpts from the Scalable Vector Graphics
+    (SVG) 1.0 Specification (Proposed Recommendation)
+    http://www.w3.org/TR/SVG
+
+    Copyright © 2001 World Wide Web Consortium, (Massachusetts
+    Institute of Technology, Institut National de Recherche en
+    Informatique et en Automatique, Keio University).
+    All Rights Reserved.
+*/
+
+#ifndef SVGLocatable_H
+#define SVGLocatable_H
+
+namespace KSVG
+{
+
+class SVGElement;
+class SVGMatrix;
+class SVGRect;
+class SVGLocatableImpl;
+
+/**
+ * Interface SVGLocatable is for all elements which either have a <code>transform</code>
+ * attribute or don't have a <code>transform</code> attribute but whose content can have
+ * a bounding box in current user space.
+ */
+class SVGLocatable
+{ 
+public:
+	SVGLocatable(const SVGLocatable &other);
+	SVGLocatable &operator=(const SVGLocatable &other);
+	SVGLocatable(SVGLocatableImpl *other);
+	virtual ~SVGLocatable();
+
+	/**
+	 * The element which established the current viewport. Often, the nearest
+	 * ancestor 'svg' element. Null if the current element is the outermost 'svg' element. 
+	 */	
+	SVGElement nearestViewportElement() const;
+
+	/**
+	 * The farthest ancestor 'svg' element. Null if the current element is
+	 * the outermost 'svg' element. 
+	 */
+	SVGElement farthestViewportElement() const;
+
+	/**
+	 * Returns the tight bounding box in current user space (i.e., after application of
+	 * the <code>transform</code> attribute, if any) on the geometry of all contained graphics
+	 * elements, exclusive of stroke-width and filter effects).
+	 *
+	 * @return An SVGRect object that defines the bounding box.
+	 */
+	SVGRect getBBox();
+
+	/**
+	 * Returns the transformation matrix from current user units (i.e., after application of
+	 * the <code>transform</code> attribute, if any) to the viewport coordinate system for
+	 * the nearestViewportElement.
+	 *
+	 * @return An SVGMatrix object that defines the CTM.
+	 */
+	SVGMatrix getCTM();
+
+	/**
+	 * Returns the transformation matrix from current user units (i.e., after application of
+	 * the <code>transform</code> attribute, if any) to the parent user agent's notice of a "pixel".
+	 * For display devices, ideally this represents a physical screen pixel. For other devices or
+	 * environments where physical pixel sizes are not known, then an algorithm similar to the
+	 * CSS2 definition of a "pixel" can be used instead.
+	 *
+	 * @return An SVGMatrix object that defines the given transformation matrix.
+	 */
+	SVGMatrix getScreenCTM();
+
+	/**
+	 * Returns the transformation matrix from the user coordinate system on the current
+	 * element (after application of the <code>transform</code> attribute, if any) to the
+	 * user coordinate system on parameter element (after application of its
+	 * <code>transform</code> attribute, if any). 
+	 *
+	 * @param element   The target element.
+	 *
+	 * @return An SVGMatrix object that defines the transformation.
+	 */
+	SVGMatrix getTransformToElement(const SVGElement &element);
+
+	// Internal! - NOT PART OF THE SVG SPECIFICATION
+	SVGLocatableImpl *handle() const { return impl; }
+
+protected:
+	SVGLocatable();
+
+private:
+	SVGLocatableImpl *impl;
+};
+
+}
+
+#endif
+
+// vim:ts=4:noet