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/*=========================================================================
Program: Visualization Toolkit
Module: vtkContextScenePrivate.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkContextScenePrivate - Private implementation for scene/items.
//
// .SECTION Description
// Provides a list of context items, and convenience functions to paint
// all of the children of the scene/item. This is a private class to be used
// in vtkContextScene, vtkAbstractContextItem and friends.
//
// \internal
#ifndef __vtkContextScenePrivate_h
#define __vtkContextScenePrivate_h
#include "vtkAbstractContextItem.h"
#include "vtkContextScene.h"
// STL headers
#include <vector> // Needed for STL vector.
class vtkContext2D;
//-----------------------------------------------------------------------------
class vtkContextScenePrivate : public std::vector<vtkAbstractContextItem*>
{
public:
// Description:
// Default constructor.
vtkContextScenePrivate(vtkAbstractContextItem* item)
: std::vector<vtkAbstractContextItem*>(), Scene(0), Item(item)
{
}
// Description:
// Destructor.
~vtkContextScenePrivate()
{
this->Clear();
}
// Description:
// A few standard defines
typedef std::vector<vtkAbstractContextItem*>::const_iterator
const_iterator;
typedef std::vector<vtkAbstractContextItem*>::iterator iterator;
// Older versions of GCC did not implement comparison operators for the
// const_reverse_operator, the simplest thing to do is not use the const
// form of the operator.
#ifdef VTK_CONST_REVERSE_ITERATOR_COMPARISON
typedef std::vector<vtkAbstractContextItem*>::const_reverse_iterator
const_reverse_iterator;
#else
typedef std::vector<vtkAbstractContextItem*>::reverse_iterator
const_reverse_iterator;
#endif
typedef std::vector<vtkAbstractContextItem*>::reverse_iterator
reverse_iterator;
// Description:
// Paint all items in the list.
void PaintItems(vtkContext2D* context)
{
for(const_iterator it = this->begin(); it != this->end(); ++it)
{
if ((*it)->GetVisible())
{
(*it)->Paint(context);
}
}
}
// Description:
// Add an item to the list - ensure it is not already in the list.
unsigned int AddItem(vtkAbstractContextItem* item)
{
item->Register(this->Scene);
item->SetScene(this->Scene);
item->SetParent(this->Item);
this->push_back(item);
return static_cast<unsigned int>(this->size()-1);
}
// Description:
// Remove an item from the list.
bool RemoveItem(vtkAbstractContextItem* item)
{
for(iterator it = this->begin(); it != this->end(); ++it)
{
if (item == *it)
{
item->SetParent(NULL);
item->SetScene(NULL);
(*it)->Delete();
this->erase(it);
return true;
}
}
return false;
}
// Description:
// Remove an item from the list.
bool RemoveItem(unsigned int index)
{
if (index < this->size())
{
return this->RemoveItem(this->at(index));
}
return false;
}
// Description:
// Clear all items from the list - unregister.
void Clear()
{
for(const_iterator it = this->begin(); it != this->end(); ++it)
{
(*it)->SetParent(NULL);
(*it)->SetScene(NULL);
(*it)->Delete();
}
this->clear();
}
// Description:
// Set the scene for the instance (and its items).
void SetScene(vtkContextScene* scene)
{
if (this->Scene == scene)
{
return;
}
this->Scene = scene;
for(const_iterator it = this->begin(); it != this->end(); ++it)
{
(*it)->SetScene(scene);
}
}
// Description:
// Store a reference to the scene.
vtkContextScene* Scene;
// Description:
// Store a reference to the item that these children are part of.
// May be NULL for items in the scene itself.
vtkAbstractContextItem* Item;
};
#endif //__vtkContextScenePrivate_h
// VTK-HeaderTest-Exclude: vtkContextScenePrivate.h
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