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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15  28 Corporate Drive
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19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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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 
48 class PQCOMPONENTS_EXPORT pqTransferFunctionWidget : public QWidget
49 {
50  Q_OBJECT
51  typedef QWidget Superclass;
52 
53 public:
54  pqTransferFunctionWidget(QWidget* parent = 0);
55  virtual ~pqTransferFunctionWidget();
56 
63  void initialize(
64  vtkScalarsToColors* stc, bool stc_editable, vtkPiecewiseFunction* pwf, bool pwf_editable);
65 
69  vtkIdType currentPoint() const;
70 
74  vtkIdType numberOfControlPoints() const;
75 
76 public slots:
80  void setCurrentPoint(vtkIdType index);
81 
87  void setCurrentPointPosition(double xpos);
88 
93  void render();
94 
95 signals:
99  void currentPointChanged(vtkIdType index);
100 
105  void controlPointsModified();
106 
107 protected slots:
112  void onCurrentChangedEvent();
113 
114  void renderInternal();
115 
116 protected:
121  void onCurrentPointEditEvent();
122 
123 private:
124  Q_DISABLE_COPY(pqTransferFunctionWidget)
125 
126  class pqInternals;
127  pqInternals* Internals;
128 };
129 
130 #endif
pqTransferFunctionWidget provides a widget that can edit the control points in a vtkPiecewiseFunction...