ParaView
pqTransferFunctionWidget.h
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1 /*=========================================================================
2 
3  Program: ParaView
4  Module: $RCSfile$
5 
6  Copyright (c) 2005,2006 Sandia Corporation, Kitware Inc.
7  All rights reserved.
8 
9  ParaView is a free software; you can redistribute it and/or modify it
10  under the terms of the ParaView license version 1.2.
11 
12  See License_v1.2.txt for the full ParaView license.
13  A copy of this license can be obtained by contacting
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31 ========================================================================*/
32 #ifndef pqTransferFunctionWidget_h
33 #define pqTransferFunctionWidget_h
34 
35 #include "pqComponentsModule.h"
36 #include "vtkType.h"
37 #include <QWidget>
38 
39 class vtkScalarsToColors;
40 class vtkPiecewiseFunction;
41 
46 class PQCOMPONENTS_EXPORT pqTransferFunctionWidget : public QWidget
47 {
48  Q_OBJECT
49  typedef QWidget Superclass;
50 public:
51  pqTransferFunctionWidget(QWidget* parent=0);
52  virtual ~pqTransferFunctionWidget();
53 
58  void initialize(vtkScalarsToColors* stc, bool stc_editable,
59  vtkPiecewiseFunction* pwf, bool pwf_editable);
60 
62  vtkIdType currentPoint() const;
63 
65  vtkIdType numberOfControlPoints() const;
66 
67 public slots:
69  void setCurrentPoint(vtkIdType index);
70 
74  void setCurrentPointPosition(double xpos);
75 
78  void render();
79 
80 signals:
82  void currentPointChanged(vtkIdType index);
83 
86  void controlPointsModified();
87 
88 protected slots:
91  void onCurrentChangedEvent();
92 
93  void renderInternal();
94 
95 protected:
98  void onCurrentPointEditEvent();
99 
100 private:
101  Q_DISABLE_COPY(pqTransferFunctionWidget)
102 
103  class pqInternals;
104  pqInternals* Internals;
105 };
106 
107 #endif
pqTransferFunctionWidget provides a widget that can edit the control points in a vtkPiecewiseFunction...