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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.
=========================================================================*/
/**
* @class vtkContextScenePrivate
* @brief Private implementation for scene/items.
*
*
* 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.
VTK_ABI_NAMESPACE_BEGIN
class vtkContext2D;
//-----------------------------------------------------------------------------
class vtkContextScenePrivate : public std::vector<vtkAbstractContextItem*>
{
public:
/**
* Default constructor.
*/
vtkContextScenePrivate(vtkAbstractContextItem* item)
: std::vector<vtkAbstractContextItem*>()
, Scene(nullptr)
, Item(item)
{
}
/**
* Destructor.
*/
~vtkContextScenePrivate() { this->Clear(); }
///@{
/**
* A few standard defines
*/
typedef std::vector<vtkAbstractContextItem*>::const_iterator const_iterator;
typedef std::vector<vtkAbstractContextItem*>::iterator iterator;
typedef std::vector<vtkAbstractContextItem*>::const_reverse_iterator const_reverse_iterator;
typedef std::vector<vtkAbstractContextItem*>::reverse_iterator reverse_iterator;
///@}
/**
* 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);
}
}
}
///@{
/**
* 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);
}
///@{
/**
* Remove an item from the list.
*/
bool RemoveItem(vtkAbstractContextItem* item)
{
for (iterator it = this->begin(); it != this->end(); ++it)
{
if (item == *it)
{
item->SetParent(nullptr);
item->SetScene(nullptr);
(*it)->Delete();
this->erase(it);
return true;
}
}
return false;
}
///@}
///@{
/**
* Remove an item from the list.
*/
bool RemoveItem(unsigned int index)
{
if (index < this->size())
{
return this->RemoveItem(this->at(index));
}
return false;
}
///@}
///@{
/**
* Clear all items from the list - unregister.
*/
void Clear()
{
for (const_iterator it = this->begin(); it != this->end(); ++it)
{
(*it)->SetParent(nullptr);
(*it)->SetScene(nullptr);
(*it)->Delete();
}
this->clear();
}
///@}
///@{
/**
* 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);
}
}
///@}
/**
* Store a reference to the scene.
*/
vtkContextScene* Scene;
///@{
/**
* Store a reference to the item that these children are part of.
* May be NULL for items in the scene itself.
*/
vtkAbstractContextItem* Item;
///@}
};
VTK_ABI_NAMESPACE_END
#endif // vtkContextScenePrivate_h
// VTK-HeaderTest-Exclude: vtkContextScenePrivate.h
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