mitkLevelWindowManager.h

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/*============================================================================

The Medical Imaging Interaction Toolkit (MITK)

Copyright (c) German Cancer Research Center (DKFZ)
All rights reserved.

Use of this source code is governed by a 3-clause BSD license that can be
found in the LICENSE file.

============================================================================*/

#ifndef MITKLEVELWINDOWMANAGER_H
#define MITKLEVELWINDOWMANAGER_H

// mitk core
#include "mitkBaseProperty.h"
#include "mitkDataStorage.h"
#include "mitkLevelWindowProperty.h"

//  c++
#include <map>
#include <utility>

namespace mitk
{
  class MITKCORE_EXPORT LevelWindowManager : public itk::Object
  {
  public:

    mitkClassMacroItkParent(LevelWindowManager, itk::Object);
    itkFactorylessNewMacro(Self);
    itkCloneMacro(Self);

    void SetDataStorage(DataStorage *ds);
    DataStorage *GetDataStorage();

    void SetAutoTopMostImage(bool autoTopMost, const DataNode *removedNode = nullptr);
    void SetSelectedImages(bool selectedImagesMode, const DataNode *removedNode = nullptr);

    void RecalculateLevelWindowForSelectedComponent(const itk::EventObject&);
    void Update(const itk::EventObject&);
    void UpdateSelected(const itk::EventObject&);
    void SetLevelWindowProperty(LevelWindowProperty::Pointer levelWindowProperty);
    void SetLevelWindow(const LevelWindow &levelWindow);
    LevelWindowProperty::Pointer GetLevelWindowProperty();
    const LevelWindow &GetLevelWindow();
    bool IsAutoTopMost();
    bool IsSelectedImages();
    void DataStorageAddedNode(const DataNode *n = nullptr);
    void DataStorageRemovedNode(const DataNode *removedNode = nullptr);
    void OnPropertyModified(const itk::EventObject &e);
    Image *GetCurrentImage();
    int GetNumberOfObservers();

    DataStorage::SetOfObjects::ConstPointer GetRelevantNodes();

  protected:
    LevelWindowManager();
    ~LevelWindowManager() override;

    DataStorage::Pointer m_DataStorage;
    LevelWindowProperty::Pointer m_LevelWindowProperty;

    typedef std::pair<unsigned long, DataNode::Pointer> PropDataPair;
    typedef std::map<PropDataPair, BaseProperty::Pointer> ObserverToPropertyValueMap;
    ObserverToPropertyValueMap m_ObserverToVisibleProperty;
    ObserverToPropertyValueMap m_ObserverToLayerProperty;
    ObserverToPropertyValueMap m_ObserverToRenderingModeProperty;
    ObserverToPropertyValueMap m_ObserverToDisplayedComponentProperty;
    ObserverToPropertyValueMap m_ObserverToLevelWindowImageProperty;
    ObserverToPropertyValueMap m_ObserverToSelectedProperty;

    void UpdateObservers();
    void ClearPropObserverLists();
    void CreatePropObserverLists();

    bool IgnoreNode(const DataNode* dataNode);

    const DataNode *m_NodeMarkedToDelete;

    bool m_AutoTopMost;
    bool m_SelectedImagesMode;
    unsigned long m_ObserverTag;
    bool m_IsObserverTagSet;
    unsigned long m_PropertyModifiedTag;
    Image *m_CurrentImage;
    std::vector<DataNode::Pointer> m_RelevantDataNodes;
    bool m_IsPropertyModifiedTagSet;
    bool m_LevelWindowMutex;
  };
}

#endif // MITKLEVELWINDOWMANAGER_H