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123 lines
3.9 KiB
123 lines
3.9 KiB
/*
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Copyright (C) 2001-2003 KSVG Team
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This file is part of the KDE project
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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This file includes excerpts from the Scalable Vector Graphics
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(SVG) 1.0 Specification (Proposed Recommendation)
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http://www.w3.org/TR/SVG
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Copyright © 2001 World Wide Web Consortium, (Massachusetts
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Institute of Technology, Institut National de Recherche en
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Informatique et en Automatique, Keio University).
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All Rights Reserved.
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*/
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#ifndef SVGLocatable_H
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#define SVGLocatable_H
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namespace KSVG
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{
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class SVGElement;
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class SVGMatrix;
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class SVGRect;
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class SVGLocatableImpl;
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/**
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* Interface SVGLocatable is for all elements which either have a <code>transform</code>
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* attribute or don't have a <code>transform</code> attribute but whose content can have
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* a bounding box in current user space.
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*/
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class SVGLocatable
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{
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public:
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SVGLocatable(const SVGLocatable &other);
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SVGLocatable &operator=(const SVGLocatable &other);
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SVGLocatable(SVGLocatableImpl *other);
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virtual ~SVGLocatable();
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/**
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* The element which established the current viewport. Often, the nearest
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* ancestor 'svg' element. Null if the current element is the outermost 'svg' element.
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*/
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SVGElement nearestViewportElement() const;
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/**
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* The farthest ancestor 'svg' element. Null if the current element is
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* the outermost 'svg' element.
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*/
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SVGElement farthestViewportElement() const;
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/**
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* Returns the tight bounding box in current user space (i.e., after application of
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* the <code>transform</code> attribute, if any) on the geometry of all contained graphics
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* elements, exclusive of stroke-width and filter effects).
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*
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* @return An SVGRect object that defines the bounding box.
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*/
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SVGRect getBBox();
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/**
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* Returns the transformation matrix from current user units (i.e., after application of
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* the <code>transform</code> attribute, if any) to the viewport coordinate system for
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* the nearestViewportElement.
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*
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* @return An SVGMatrix object that defines the CTM.
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*/
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SVGMatrix getCTM();
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/**
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* Returns the transformation matrix from current user units (i.e., after application of
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* the <code>transform</code> attribute, if any) to the parent user agent's notice of a "pixel".
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* For display devices, ideally this represents a physical screen pixel. For other devices or
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* environments where physical pixel sizes are not known, then an algorithm similar to the
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* CSS2 definition of a "pixel" can be used instead.
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*
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* @return An SVGMatrix object that defines the given transformation matrix.
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*/
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SVGMatrix getScreenCTM();
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/**
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* Returns the transformation matrix from the user coordinate system on the current
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* element (after application of the <code>transform</code> attribute, if any) to the
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* user coordinate system on parameter element (after application of its
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* <code>transform</code> attribute, if any).
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*
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* @param element The target element.
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*
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* @return An SVGMatrix object that defines the transformation.
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*/
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SVGMatrix getTransformToElement(const SVGElement &element);
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// Internal! - NOT PART OF THE SVG SPECIFICATION
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SVGLocatableImpl *handle() const { return impl; }
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protected:
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SVGLocatable();
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private:
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SVGLocatableImpl *impl;
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};
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}
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#endif
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// vim:ts=4:noet
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