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146 lines
4.7 KiB
146 lines
4.7 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_OBJECT_HOLDER_H
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#define KIG_OBJECTS_OBJECT_HOLDER_H
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#include "object_calcer.h"
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#include <tqstring.h>
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/**
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* An ObjectHolder represents an object as it is known to the
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* document. It keeps a pointer to an ObjectCalcer, where it gets its
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* data ( the ObjectImp that the ObjectCalcer holds ) from. It also
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* holds information about how to draw this ObjectImp on the window,
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* by keeping a pointer to an ObjectDrawer ( see below ). In its draw
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* method, it gets the ObjectImp from the ObjectCalcer, and passes it
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* to the ObjectDrawer, asking it to draw the ObjectImp on the window.
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*
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* The document ( check the KigDocument class ) holds a list of these
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* ObjectHolder's. This is its only link with the ObjectCalcer
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* dependency graph.
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*
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* An ObjectHolder keeps a reference to its * ObjectCalcer.
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*/
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class ObjectHolder
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{
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ObjectCalcer::shared_ptr mcalcer;
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ObjectDrawer* mdrawer;
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ObjectConstCalcer::shared_ptr mnamecalcer;
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public:
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/**
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* Construct a new ObjectHolder with a given ObjectCalcer and
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* ObjectDrawer, with a given name calcer.
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*/
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ObjectHolder( ObjectCalcer* calcer, ObjectDrawer* drawer, ObjectConstCalcer* namecalcer );
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/**
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* Construct a new ObjectHolder with a given ObjectCalcer and
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* ObjectDrawer.
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*/
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ObjectHolder( ObjectCalcer* calcer, ObjectDrawer* drawer );
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/**
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* equivalent to the previous constructor, but with a default
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* ObjectDrawer and no name.
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*/
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ObjectHolder( ObjectCalcer* calcer );
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~ObjectHolder();
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const ObjectImp* imp() const;
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const ObjectCalcer* calcer() const;
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ObjectCalcer* calcer();
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const ObjectDrawer* drawer() const;
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ObjectDrawer* drawer();
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// the following two return zero if no name is set.
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const ObjectConstCalcer* nameCalcer() const;
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ObjectConstCalcer* nameCalcer();
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/**
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* Setting the namecalcer is only allowed if previously none was
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* set. This way, we avoid keeping a useless namecalcer around if
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* no name is set.
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*/
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void setNameCalcer( ObjectConstCalcer* namecalcer );
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/**
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* returns TQString() if no name is set.
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*/
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const TQString name() const;
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/**
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* Set the ObjectDrawer of this ObjectHolder to \p d , the old
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* ObjectDrawer is deleted.
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*/
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void setDrawer( ObjectDrawer* d );
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/**
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* Set the ObjectDrawer of this ObjectHolder to \p d , the old
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* ObjectDrawer is not deleted, but returned.
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*/
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ObjectDrawer* switchDrawer( ObjectDrawer* d );
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/**
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* Make our ObjectCalcer recalculate its ObjectImp.
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*/
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void calc( const KigDocument& );
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/**
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* Draw this object on the given KigPainter. If \p selected is true,
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* then it will be drawn in red, instead of its normal color.
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*/
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void draw( KigPainter& p, bool selected ) const;
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/**
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* Returns whether this object contains the point \p p .
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*/
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bool tqcontains( const Coordinate& p, const KigWidget& w, bool nv = false ) const;
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/**
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* Returns whether this object is in the rectangle \p r .
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*/
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bool inRect( const Rect& r, const KigWidget& w ) const;
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/**
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* Returns whether this object is shown.
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*/
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bool shown() const;
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/**
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* This call is simply forwarded to the ObjectCalcer. Check the
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* documentation of ObjectCalcer::moveReferencePoint() for more info.
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*/
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const Coordinate moveReferencePoint() const;
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/**
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* This call is simply forwarded to the ObjectCalcer. Check the
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* documentation of ObjectCalcer::move() for more info.
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*/
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void move( const Coordinate& to, const KigDocument& );
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/**
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* This call is simply forwarded to the ObjectCalcer. Check the
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* documentation of ObjectCalcer::canMove() for more info.
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*/
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bool canMove() const;
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/**
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* This call is simply forwarded to the ObjectCalcer. Check the
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* documentation of ObjectCalcer::isFreelyTranslatable() for more info.
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*/
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bool isFreelyTranslatable() const;
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/**
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* Return a statement saying something like "select this segment" or
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* "select segment ab" depending on whether this ObjectHolder has a
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* name.
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*/
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TQString selectStatement() const;
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};
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#endif
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