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97 lines
3.9 KiB
97 lines
3.9 KiB
// Copyright (C) 2003 Dominique Devriese <devriese@kde.org>
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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// This program 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
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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// 02110-1301, USA.
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#ifndef KIG_OBJECTS_LOCUS_IMP_H
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#define KIG_OBJECTS_LOCUS_IMP_H
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#include "curve_imp.h"
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#include "../misc/object_hierarchy.h"
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/**
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* LocusImp is an imp that consists of a copy of the curveimp that the
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* moving point moves over, and an ObjectHierarchy that can calc (
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* given a point, and optionally some more tqparent objects the position
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* of the moving point. The hierarchy should take the moving point as
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* its *first* argument and all others after that. The others are
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* used to make it possible for Locus to be updated when some of the
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* other objects that appear in the path from the moving point to the
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* dependent point change.
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*
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* This may seem rather complicated, but I think it is absolutely
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* necessary to support locuses using Kig's object system. It would
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* be very bad for LocusImp to have to keep references to its parents
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* as Objects ( since only the objects know how they are related to
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* their parents ). This is how we used to do it, but the current
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* method is far superior. First and foremost because the separation
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* between ObjectImp and Object is something that Kig depends on very
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* much, and because every ObjectImp should contain all the data it
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* needs itself. ObjectImp's are entirely independent objects.
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* That's also why we don't keep a pointer to the old CurveImp, but a
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* copy of it..
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*
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* i hope this is a bit clear, if not, feel free to ask for
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* explanation of what you don't understand..
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*/
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class LocusImp
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: public CurveImp
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{
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CurveImp* mcurve;
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const ObjectHierarchy mhier;
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double getDist(double param, const Coordinate& p, const KigDocument& doc) const;
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void getInterval(double& x1,double& x2,double incr,const Coordinate& p, const KigDocument& doc) const;
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double getParamofmin(double a, double b, const Coordinate& p, const KigDocument& doc) const;
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public:
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typedef CurveImp Parent;
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static const ObjectImpType* stype();
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LocusImp( CurveImp*, const ObjectHierarchy& );
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~LocusImp();
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LocusImp* copy() const;
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ObjectImp* transform( const Transformation& ) const;
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void draw( KigPainter& p ) const;
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bool tqcontains( const Coordinate& p, int width, const KigWidget& ) const;
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Rect surroundingRect() const;
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bool inRect( const Rect& r, int width, const KigWidget& ) const;
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double getParam( const Coordinate& point, const KigDocument& ) const;
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const Coordinate getPoint( double param, const KigDocument& ) const;
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// TODO ?
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const uint numberOfProperties() const;
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const QCStringList properties() const;
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const QCStringList propertiesInternalNames() const;
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ObjectImp* property( uint which, const KigDocument& w ) const;
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const char* iconForProperty( uint which ) const;
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const ObjectImpType* impRequirementForProperty( uint which ) const;
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bool isPropertyDefinedOnOrThroughThisImp( uint which ) const;
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const CurveImp* curve() const;
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const ObjectHierarchy& hierarchy() const;
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const ObjectImpType* type() const;
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void visit( ObjectImpVisitor* vtor ) const;
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bool equals( const ObjectImp& rhs ) const;
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bool containsPoint( const Coordinate& p, const KigDocument& d ) const;
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bool internalContainsPoint( const Coordinate& p, double threshold, const KigDocument& doc ) const;
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};
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#endif
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