CTK  0.1.0
The Common Toolkit is a community effort to provide support code for medical image analysis, surgical navigation, and related projects.
ctkTransferFunctionRepresentation.h
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1 /*=========================================================================
2 
3  Library: CTK
4 
5  Copyright (c) Kitware Inc.
6 
7  Licensed under the Apache License, Version 2.0 (the "License");
8  you may not use this file except in compliance with the License.
9  You may obtain a copy of the License at
10 
11  http://www.apache.org/licenses/LICENSE-2.0.txt
12 
13  Unless required by applicable law or agreed to in writing, software
14  distributed under the License is distributed on an "AS IS" BASIS,
15  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16  See the License for the specific language governing permissions and
17  limitations under the License.
18 
19 =========================================================================*/
20 
21 #ifndef __ctkTransferFunctionRepresentation_h
22 #define __ctkTransferFunctionRepresentation_h
23 
25 #include <QColor>
26 #include <QGradient>
27 #include <QObject>
28 #include <QPainterPath>
29 
31 #include "ctkPimpl.h"
32 #include "ctkTransferFunction.h"
33 #include "ctkWidgetsExport.h"
34 
36 class ctkTransferFunctionRepresentationPrivate;
37 
38 //-----------------------------------------------------------------------------
40 class CTK_WIDGETS_EXPORT ctkTransferFunctionRepresentation: public QObject
41 {
42  Q_OBJECT
43  Q_PROPERTY(QColor verticalGradientColor READ verticalGradientColor WRITE setVerticalGradientColor)
44 
45 public:
47  ctkTransferFunctionRepresentation(QObject* parent = 0);
49  ctkTransferFunctionRepresentation(ctkTransferFunction* transferFunction, QObject* parent = 0);
51 
52  void setTransferFunction(ctkTransferFunction* transferFunction);
53  ctkTransferFunction* transferFunction()const;
54 
55  inline qreal posX(const ctkControlPoint* cp)const;
56  inline qreal posY(const ctkControlPoint* cp)const;
57  inline QColor color(const ctkControlPoint* cp) const;
58 
59  inline qreal posX(const ctkPoint& point)const;
60  inline qreal posY(const ctkPoint& point)const;
61  inline QColor color(const ctkPoint& point) const;
62 
63  qreal posX(const qreal& tfX)const;
64  qreal posY(const QVariant& tfV)const;
65  QColor color(const QVariant& tfV) const;
66 
67  QPointF mapPointToScene(const ctkControlPoint* cp)const;
68  QPointF mapPointToScene(const ctkPoint& point)const;
69 
70  qreal mapXToScene(qreal posX)const;
71  qreal mapYToScene(qreal posY)const;
72  qreal mapXFromScene(qreal ScenePosX)const;
73  qreal mapYFromScene(qreal ScenePosY)const;
74  inline QPointF mapPointFromScene(const QPointF& point)const;
75 
76  QList<ctkPoint> bezierParams(ctkControlPoint* start, ctkControlPoint* end) const;
77  QList<ctkPoint> nonLinearPoints(ctkControlPoint* start, ctkControlPoint* end) const;
78 
79  const QPainterPath& curve()const;
80  const QList<QPointF>& points()const;
81  const QGradient& gradient()const;
82 
83  void computeCurve();
84  void computeGradient();
85 
86  QColor verticalGradientColor()const;
87  void setVerticalGradientColor(QColor verticalGradientColor);
88 
89 protected Q_SLOTS:
90  virtual void onTransferFunctionChanged();
91 
92 protected:
93  qreal computeRangeXDiff(const QRectF& rect, qreal rangeX[2]);
94  qreal computeRangeXOffset(qreal rangeX[2]);
95  qreal computeRangeYDiff(const QRectF& rect, const QVariant rangeY[2]);
96  qreal computeRangeYOffset(const QVariant rangeY[2]);
97 protected:
98  QScopedPointer<ctkTransferFunctionRepresentationPrivate> d_ptr;
99 
100 private:
101  Q_DECLARE_PRIVATE(ctkTransferFunctionRepresentation);
102  Q_DISABLE_COPY(ctkTransferFunctionRepresentation);
103 };
104 
106 {
107  return this->posX(cp->x());
108 }
110 {
111  return this->posY(cp->value());
112 }
114 {
115  return this->color(cp->value());
116 }
117 
119 {
120  return this->posX(point.X);
121 }
123 {
124  return this->posY(point.Value);
125 }
127 {
128  return this->color(point.Value);
129 }
130 
132 {
133  return QPointF(this->mapXFromScene(point.x()),
134  this->mapYFromScene(point.y()));
135 }
136 
137 #endif
QScopedPointer< ctkTransferFunctionRepresentationPrivate > d_ptr
QPointF mapPointFromScene(const QPointF &point) const
QVariant Value
qreal posY(const ctkControlPoint *cp) const
const QVariant & value() const
qreal posX(const ctkControlPoint *cp) const
const qreal & x() const
QColor color(const ctkControlPoint *cp) const