VTK
QVTKGraphicsItem.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: QVTKGraphicsItem.h
5 
6  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7  All rights reserved.
8  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9 
10  This software is distributed WITHOUT ANY WARRANTY; without even
11  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12  PURPOSE. See the above copyright notice for more information.
13 
14 =========================================================================*/
15 /*-------------------------------------------------------------------------
16  Copyright 2010 Sandia Corporation.
17  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
18  the U.S. Government retains certain rights in this software.
19 -------------------------------------------------------------------------*/
20 // .NAME QVTKGraphicsItem - provides a way to view a VTK scene as an item in QGraphicsView
21 //
22 // .SECTION Description
23 //
24 
25 #ifndef QVTKGraphicsItem_hpp
26 #define QVTKGraphicsItem_hpp
27 
28 #include "vtkGUISupportQtOpenGLModule.h" // For export macro
29 #include <QGLContext>
30 #include <QGraphicsWidget>
31 #include <vtkSmartPointer.h>
32 #include "QVTKWin32Header.h"
34 class QGLFramebufferObject;
36 class QVTKInteractor;
38 class vtkObject;
39 
40 class VTKGUISUPPORTQTOPENGL_EXPORT QVTKGraphicsItem : public QGraphicsWidget
41 {
42  Q_OBJECT
43  public:
44  // Description:
45  // constructor. Takes a QGLContext to use which the QGraphicsView is using.
46  QVTKGraphicsItem(QGLContext* ctx, QGraphicsItem* p = 0);
47 
48  // Description:
49  // destructor
51 
52  // Description:
53  // set the render window to use with this item
54  void SetRenderWindow(vtkGenericOpenGLRenderWindow* win);
55 
56  // Description:
57  // get the render window used with this item
58  vtkGenericOpenGLRenderWindow* GetRenderWindow() const;
59 
60  // Description:
61  // get the render window interactor used with this item
62  // this item enforces its own interactor
63  QVTKInteractor* GetInteractor() const;
64 
65  public Q_SLOTS:
66  // Description:
67  // update this item in the view (this does not cause the vtk render window to draw)
68  // it just causes the current contents in the window to draw to the QGraphicsScene
69  virtual void Update();
70 
71  protected Q_SLOTS:
72  // slot to make this vtk render window current
73  virtual void MakeCurrent();
74  // slot called when vtk render window starts to draw
75  virtual void Start();
76  // slot called when vtk render window is done drawing
77  virtual void End();
78  // slot called when vtk wants to know if the context is current
79  virtual void IsCurrent(vtkObject* caller, unsigned long vtk_event, void* client_data, void* call_data);
80  // slot called when vtk wants to know if a window is direct
81  virtual void IsDirect(vtkObject* caller, unsigned long vtk_event, void* client_data, void* call_data);
82  // slot called when vtk wants to know if a window supports OpenGL
83  virtual void SupportsOpenGL(vtkObject* caller, unsigned long vtk_event, void* client_data, void* call_data);
84 
85  protected:
86 
87  // handle item key events
88  void keyPressEvent(QKeyEvent* e);
89  void keyReleaseEvent(QKeyEvent* e);
90 
91  // handle item mouse events
92  void mousePressEvent(QGraphicsSceneMouseEvent* e);
93  void mouseReleaseEvent(QGraphicsSceneMouseEvent* e);
94  void mouseMoveEvent(QGraphicsSceneMouseEvent* e);
95  void resizeEvent(QGraphicsSceneResizeEvent* e);
96  void moveEvent(QGraphicsSceneMoveEvent* e);
97  void wheelEvent(QGraphicsSceneWheelEvent* e);
98  void hoverEnterEvent(QGraphicsSceneHoverEvent* e);
99  void hoverLeaveEvent(QGraphicsSceneHoverEvent* e);
100  void hoverMoveEvent(QGraphicsSceneHoverEvent* e);
101 
102  // handle item paint event
103  void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
104 
105  QGLContext* mContext;
106  QGLFramebufferObject* mFBO;
111 
112 };
113 
114 #endif
abstract base class for most VTK objects
Definition: vtkObject.h:59
vtkSmartPointer< QVTKInteractor > mIren
QGLContext * mContext
an interactor for QVTKOpenGLNativeWidget (and QVTKWiget).
Manage connections between VTK events and Qt slots.
platform independent render window
vtkSmartPointer< vtkEventQtSlotConnect > mConnect
QGLFramebufferObject * mFBO
QVTKInteractorAdapter * mIrenAdapter
vtkSmartPointer< vtkGenericOpenGLRenderWindow > mWin