1 #ifndef SOQT_THUMBWHEEL_H
2 #define SOQT_THUMBWHEEL_H
3 
4 /**************************************************************************\
5  * Copyright (c) Kongsberg Oil & Gas Technologies AS
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions are
10  * met:
11  *
12  * Redistributions of source code must retain the above copyright notice,
13  * this list of conditions and the following disclaimer.
14  *
15  * Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in the
17  * documentation and/or other materials provided with the distribution.
18  *
19  * Neither the name of the copyright holder nor the names of its
20  * contributors may be used to endorse or promote products derived from
21  * this software without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27  * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
29  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
33  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 \**************************************************************************/
35 
36 #include <qwidget.h>
37 
38 #include <Inventor/Qt/SoQtBasic.h>
39 
40 class QPixmap;
41 class SoAnyThumbWheel;
42 
43 // *************************************************************************
44 
45 class SOQT_DLL_API SoQtThumbWheel : public QWidget
46 {
47   Q_OBJECT
48 
49 public:
50   enum Orientation { Horizontal, Vertical };
51 
52   SoQtThumbWheel(QWidget * parent = 0, const char * name = 0);
53   SoQtThumbWheel(Orientation, QWidget * parent = 0, const char * name = 0);
54   ~SoQtThumbWheel(void);
55 
56   void setOrientation(Orientation);
57   Orientation orientation(void) const;
58 
59   void setValue(float value);
60   float value(void) const;
61 
62   void setEnabled(bool enable);
63   bool isEnabled(void) const;
64 
65   enum boundaryHandling {
66     CLAMP,
67     MODULATE,
68     ACCUMULATE
69   };
70   void setRangeBoundaryHandling(boundaryHandling handling);
71   boundaryHandling getRangeBoundaryHandling(void) const;
72 
73   QSize sizeHint(void) const;
74 
75 signals:
76   void wheelPressed(void);
77   void wheelMoved(float value);
78   void wheelReleased(void);
79 
80 protected:
81   void paintEvent(QPaintEvent *);
82 
83   void mousePressEvent(QMouseEvent *);
84   void mouseReleaseEvent(QMouseEvent *);
85   void mouseMoveEvent(QMouseEvent *);
86 
87 private:
88   void constructor(Orientation);
89 
90   SoQtThumbWheel(const SoQtThumbWheel & wheel);
91   SoQtThumbWheel & operator = (const SoQtThumbWheel & wheel);
92 
93   enum State { Idle, Dragging, Disabled } state;
94 
95   Orientation orient;
96   float wheelValue, tempWheelValue;
97   int mouseDownPos, mouseLastPos;
98 
99   void initWheel(int diameter, int width);
100 
101   SoAnyThumbWheel * wheel;
102   QPixmap ** pixmaps;
103   int numPixmaps;
104   int currentPixmap;
105 
106 }; // class SoQtThumbWheel
107 
108 // *************************************************************************
109 
110 #endif // ! SOQT_THUMBWHEEL_H
111