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/* This file is part of the KDE project
Copyright (C) 2001, The Karbon Developers
Copyright (C) 2002, The Karbon Developers
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 __VSELECTION_H__
#define __VSELECTION_H__
#include <tqptrlist.h>
#include <KoRect.h>
#include "vobject.h"
#include "vvisitor.h"
#include <koffice_export.h>
class KoPoint;
class TQObject;
class VPainter;
class VVisitor;
class VSegment;
typedef TQPtrList<VObject> VObjectList;
typedef TQPtrListIterator<VObject> VObjectListIterator;
/// Ids of manipulation nodes.
enum VHandleNode
{
node_none = 0,
node_lt = 1,
node_mt = 2,
node_rt = 3,
node_lm = 4,
node_mm = 5,
node_rm = 6,
node_lb = 7,
node_mb = 8,
node_rb = 9
};
/**
* VSelection manages a set of selected vobjects.
*/
class KARBONBASE_EXPORT VSelection : public VObject, public VVisitor
{
public:
/**
* Constructs a vselection with the specified parent.
*
* @param parent the selection's parent
*/
VSelection( VObject* parent = 0L );
/**
* Constructs a vselection by copying the specified selection.
*
* @param selection the selection to copy from
*/
VSelection( const VSelection& selection );
/**
* Destroys the selection.
*/
virtual ~VSelection();
/**
* Paint selected objects outline and handle.
*/
void draw( VPainter* painter, double zoomFactor ) const;
virtual const KoRect& boundingBox() const;
virtual VSelection* clone() const;
virtual void accept( VVisitor& visitor );
/**
* Adds all objects to the selection.
*/
void append();
/**
* Adds an object to the selection.
*/
void append( VObject* object );
/**
* Adds all objects of the specified object list to the selection.
*
* @param objects the list of objects to add
*/
void append( const VObjectList &objects );
/**
* Adds all objects ( selectObjects == true ) or all nodes
* ( selectObjects == false ) within rect to the selection.
*/
bool append( const KoRect& rect, bool selectObjects = true, bool exclusive = true );
/**
* Removes the reference to the object, not the object itself.
*/
void take( VObject& object );
/**
* Removes all objects ( selectObjects == true ) or all nodes
* ( selectObjects == false ) within rect from the selection.
*/
bool take( const KoRect& rect, bool selectObjects = true, bool exclusive = true );
/**
* Removes the references to all objects, not the objects themselves.
*/
void clear();
/**
* Read only access to the selected objects.
*/
const VObjectList& objects() const { return m_objects; }
/**
* Returns a list of segments that have at least one control point inside the specified rect.
*
* @param rect the selection rect
* @return the list of segments
*/
TQPtrList<VSegment> getSegments( const KoRect& rect );
/**
* Selects or deselects all nodes.
*
* @param select controls if nodes are selected or deselected
*/
void selectNodes( bool select = true );
/**
* Returns the handle node id, the KoPoint is inside.
*
* @param point the selection point
* @return the handle the point is inside or node_none if point is not inside any node
*/
VHandleNode handleNode( const KoPoint &point ) const;
/**
* Toggle selection handles on/off.
*
* @param handle controls if handle are shown or not
*/
void showHandle( bool handle = true ) { m_showhandle = handle; }
/**
* Toggles selection of objects/nodes.
*
* @param selectObjects controls if objects or nodes are selected
*/
virtual void setSelectObjects( bool selectObjects = true ) { m_selectObjects = selectObjects; }
static void setHandleSize( uint size )
{ m_handleNodeSize = size; }
static uint handleSize()
{ return m_handleNodeSize; }
private:
/**
* Show/Hide handle.
*/
bool m_showhandle;
/**
* Select objects and not nodes?
*/
bool m_selectObjects;
/**
* The list of currently selected objects.
*/
VObjectList m_objects;
/**
* Paint coordinates of handle rectangle and handle nodes.
* Used for handle node determination and handle node drawing.
*/
KoRect *m_handleRect;
/**
* Paint size of nodes.
*/
static uint m_handleNodeSize;
};
#endif
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