CPP   35

qthumbwheel.h

Guest on 19th August 2021 01:33:41 AM

  1. /****************************************************************************
  2. ** $Id: qt/qthumbwheel.h   3.3.6   **
  3. **
  4. ** Definition of QThumbWheel class
  5. **
  6. ** Created : 010205
  7. **
  8. ** Copyright (C) Trolltech AS.  All rights reserved.
  9. **
  10. ** This file is part of the widgets module of the Qt GUI Toolkit.
  11. **
  12. ** This file may be distributed under the terms of the Q Public License
  13. ** as defined by Trolltech AS of Norway and appearing in the file
  14. ** LICENSE.QPL included in the packaging of this file.
  15. **
  16. ** This file may be distributed and/or modified under the terms of the
  17. ** GNU General Public License version 2 as published by the Free Software
  18. ** Foundation and appearing in the file LICENSE.GPL included in the
  19. ** packaging of this file.
  20. **
  21. ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
  22. ** licenses may use this file in accordance with the Qt Commercial License
  23. ** Agreement provided with the Software.
  24. **
  25. ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  26. ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  27. **
  28. ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
  29. **   information about Qt Commercial License Agreements.
  30. ** See http://www.trolltech.com/qpl/ for QPL licensing information.
  31. ** See http://www.trolltech.com/gpl/ for GPL licensing information.
  32. **
  33. ** Contact info@trolltech.com if any conditions of this licensing are
  34. ** not clear to you.
  35. **
  36. **********************************************************************/
  37.  
  38. #ifndef QTHUMBWHEEL_H
  39. #define QTHUMBWHEEL_H
  40.  
  41. #ifndef QT_H
  42. #include "qframe.h"
  43. #include "qrangecontrol.h"
  44. #endif // QT_H
  45.  
  46. #ifndef QT_NO_THUMBWHEEL
  47.  
  48. class QThumbWheel : public QFrame, public QRangeControl
  49. {
  50.     Q_OBJECT
  51.  
  52. public:
  53.     QThumbWheel( QWidget *parent=0, const char *name=0 );
  54.     ~QThumbWheel();
  55.  
  56.     virtual void        setOrientation( Orientation );
  57.     Orientation         orientation() const;
  58.     virtual void        setTracking( bool enable );
  59.     bool                tracking() const;
  60.     virtual void        setTransmissionRatio( double r );
  61.     double              transmissionRatio() const;
  62.  
  63. public slots:
  64.     virtual void setValue( int );
  65.  
  66. signals:
  67.     void        valueChanged( int value );
  68.  
  69. protected:
  70.     void        valueChange();
  71.     void        rangeChange();
  72.     void        stepChange();
  73.  
  74.     void        keyPressEvent( QKeyEvent * );
  75.     void        mousePressEvent( QMouseEvent * );
  76.     void        mouseReleaseEvent( QMouseEvent * );
  77.     void        mouseMoveEvent( QMouseEvent * );
  78.     void        wheelEvent( QWheelEvent * );
  79.     void        focusInEvent( QFocusEvent *e );
  80.     void        focusOutEvent( QFocusEvent *e );
  81.  
  82.     void        drawContents( QPainter * );
  83.  
  84. private:
  85.     void        init();
  86.     int         valueFromPosition( const QPoint & );
  87.  
  88.  
  89.     double      rat;
  90.     int         pressedAt;
  91.     Orientation orient;
  92.     uint        track : 1;
  93.     uint        mousePressed : 1;
  94.  
  95.     class QThumbWheelPrivate;
  96.     QThumbWheelPrivate *d;
  97. };
  98.  
  99. inline QThumbWheel::Orientation QThumbWheel::orientation() const
  100. {
  101.     return orient;
  102. }
  103.  
  104. inline bool QThumbWheel::tracking() const
  105. {
  106.     return (bool)track;
  107. }
  108.  
  109. inline double QThumbWheel::transmissionRatio() const
  110. {
  111.     return rat;
  112. }
  113.  
  114. #endif // QT_NO_WHEEL
  115.  
  116. #endif // QWHEEL_H

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