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cxTransferFunctionAlphaWidget.h
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1 /*=========================================================================
2 This file is part of CustusX, an Image Guided Therapy Application.
3 
4 Copyright (c) 2008-2014, SINTEF Department of Medical Technology
5 All rights reserved.
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7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions are met:
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10 1. Redistributions of source code must retain the above copyright notice,
11  this list of conditions and the following disclaimer.
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13 2. Redistributions in binary form must reproduce the above copyright notice,
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21 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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31 =========================================================================*/
32 
33 #ifndef CXTRANSFERFUNCTIONALPHAWIDGET_H_
34 #define CXTRANSFERFUNCTIONALPHAWIDGET_H_
35 
36 #include "cxGuiExport.h"
37 
38 #include "cxBaseWidget.h"
39 
40 #include <limits.h>
41 #include "cxImage.h"
42 #include "cxForwardDeclarations.h"
43 #include "cxActiveImageProxy.h"
44 #include "cxLegacySingletons.h"
45 class QRect;
46 
47 namespace cx
48 {
59 class cxGui_EXPORT TransferFunctionAlphaWidget : public BaseWidget
60 {
61  Q_OBJECT
62 
63  void clearBackground(QPainter &painter);
64 public:
65  TransferFunctionAlphaWidget(ActiveDataPtr activeData, QWidget* parent);
66  virtual ~TransferFunctionAlphaWidget();
67 
68  void setData(ImagePtr image, ImageTFDataPtr tfData);
69  void setReadOnly(bool readOnly);
70 
71 public slots:
72  void activeImageTransferFunctionsChangedSlot();
73 
74 protected:
75  struct AlphaPoint
76  {
77  int position;
78  int value;
79  AlphaPoint() :
80  position(INT_MIN),
81  value(INT_MIN)
82  {}
83  AlphaPoint(int pos, int val) :
84  position(pos),
85  value(val)
86  {}
87  void reset()
88  {
89  position = INT_MIN;
90  value = INT_MIN;
91  }
92  bool isValid()
93  {
94  if(position != INT_MIN)
95  return true;
96  return false;
97  }
98  };
99 
100  virtual void enterEvent(QEvent* event);
101  virtual void leaveEvent(QEvent* event);
102  virtual void mousePressEvent(QMouseEvent* event);
103  virtual void mouseReleaseEvent(QMouseEvent* event);
104  virtual void mouseMoveEvent(QMouseEvent* event);
105  virtual void keyPressEvent(QKeyEvent* event);
106 
107  virtual void paintEvent(QPaintEvent* event);
108  virtual void resizeEvent(QResizeEvent* evt);
109 
110  AlphaPoint selectPoint(QPoint pos);
111  AlphaPoint getCurrentAlphaPoint(QPoint pos);
112  void toggleSelectedPoint(QPoint pos);
113  void moveCurrentAlphaPoint(AlphaPoint newAlphaPoint);
114  QPoint alpha2screen(AlphaPoint pt) const;
115  void updateTooltip(QPoint pos);
116  void updateTooltip(AlphaPoint point);
117 
118  bool isEndpoint(int intensity) const;
119  void paintHistogram(QPainter& painter);
120  void paintOpacityGraph(QPainter& painter);
121  std::pair<int,int> findAllowedMoveRangeAroundAlphaPoint(int selectedPointIntensity);
122 
123  QRect mFullArea;
124  QRect mPlotArea;
125  int mBorder;
126  bool mReadOnly;
127 
128  std::map<int, QRect> mPointRects;
129  AlphaPoint mSelectedAlphaPoint;
130 // bool mEndPoint;///< Current alpha point is an endpoint
131 
132  ImagePtr mImage;
133  ImageTFDataPtr mImageTF;
134  ActiveImageProxyPtr mActiveImageProxy;
135 
136  virtual QSize sizeHint () const { return QSize(200, 100);};
137 };
138 }
139 #endif /* CXTRANSFERFUNCTIONALPHAWIDGET_H_ */
cx::ImagePtr
boost::shared_ptr< class Image > ImagePtr
Definition: cxDicomWidget.h:48
cx::ActiveImageProxyPtr
boost::shared_ptr< class ActiveImageProxy > ActiveImageProxyPtr
Definition: cxDataInterface.h:50
cx::ActiveDataPtr
boost::shared_ptr< class ActiveData > ActiveDataPtr
Definition: cxColorWidget.h:42
cx::TransferFunctionAlphaWidget::mReadOnly
bool mReadOnly
Is class readOnly? Eg no mouse interaction possible.
Definition: cxTransferFunctionAlphaWidget.h:126
cx::TransferFunctionAlphaWidget::mSelectedAlphaPoint
AlphaPoint mSelectedAlphaPoint
The current alpha point.
Definition: cxTransferFunctionAlphaWidget.h:129
cx::BaseWidget
Interface for QWidget which handles widgets uniformly for the system.
Definition: cxBaseWidget.h:108
cx::TransferFunctionAlphaWidget::mBorder
int mBorder
The size of the border around the transferfunction. The size of the rectangles are mBorder * 2...
Definition: cxTransferFunctionAlphaWidget.h:125
cx::TransferFunctionAlphaWidget::mPointRects
std::map< int, QRect > mPointRects
Cache with all point rectangles.
Definition: cxTransferFunctionAlphaWidget.h:128
cx::ImageTFDataPtr
boost::shared_ptr< class ImageTFData > ImageTFDataPtr
Definition: cxForwardDeclarations.h:72
cx::TransferFunctionAlphaWidget::AlphaPoint
Internal placeholder for a function point.
Definition: cxTransferFunctionAlphaWidget.h:75