vtkMRMLLayerDMInteractionLogic.h

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/*==============================================================================
 
  Program: 3D Slicer
 
  Copyright (c) Kitware SAS
 
  See COPYRIGHT.txt
  or http://www.slicer.org/copyright/copyright.txt for details.
 
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
 
  This file was originally developed by Thibault Pelletier, Kitware SAS,
  and was partially funded by ANR grants ANR-22-CE45-0034 and ANR-18-RHUS-005.
 
==============================================================================*/
 
#ifndef __vtkMRMLLayerDMInteractionLogic_h
#define __vtkMRMLLayerDMInteractionLogic_h
 
#include "vtkSlicerLayerDMModuleMRMLDisplayableManagerExport.h"
 
// VTK includes
#include <vtkObject.h>
#include <vtkSmartPointer.h>
#include <vtkWeakPointer.h>
 
// STL includes
#include <vector>
 
class vtkMRMLLayerDMPipeline;
class vtkMRMLInteractionEventData;
class vtkMRMLAbstractViewNode;

class VTK_SLICER_LAYERDM_MODULE_MRMLDISPLAYABLEMANAGER_EXPORT vtkMRMLLayerDMInteractionLogic : public vtkObject
{
public:
  static vtkMRMLLayerDMInteractionLogic* New();
  vtkTypeMacro(vtkMRMLLayerDMInteractionLogic, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  void AddPipeline(const vtkSmartPointer<vtkMRMLLayerDMPipeline>& pipeline);
  bool CanProcessInteractionEvent(vtkMRMLInteractionEventData* eventData, double& distance2);
  std::vector<vtkSmartPointer<vtkMRMLLayerDMPipeline>> GetCanProcessPipelines() const;
  vtkMRMLLayerDMPipeline* GetLastFocusedPipeline() const;
  void LoseFocus(vtkMRMLInteractionEventData* eventData);
  void LoseFocus();
  bool ProcessInteractionEvent(vtkMRMLInteractionEventData* eventData);
  void RemovePipeline(const vtkSmartPointer<vtkMRMLLayerDMPipeline>& pipeline);
  void SetViewNode(vtkMRMLAbstractViewNode* viewNode);
 
protected:
  vtkMRMLLayerDMInteractionLogic();
  ~vtkMRMLLayerDMInteractionLogic() override = default;
 
private:
  static int MinWidgetState();
  std::tuple<double, int> PrioritizeCanProcessPipelines(vtkMRMLInteractionEventData* eventData);
  void LosePreviousFocusInCannotProcess(vtkMRMLInteractionEventData* eventData);
 
  std::vector<vtkSmartPointer<vtkMRMLLayerDMPipeline>> Pipelines;
  vtkSmartPointer<vtkMRMLLayerDMPipeline> LastFocusedPipeline;
  std::vector<vtkSmartPointer<vtkMRMLLayerDMPipeline>> CanProcessPipelines;
  vtkWeakPointer<vtkMRMLAbstractViewNode> ViewNode;
};
 
#endif