qscrollbar.h 3.5 KB

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  1. /****************************************************************************
  2. **
  3. ** Copyright (C) 2016 The Qt Company Ltd.
  4. ** Contact: https://www.qt.io/licensing/
  5. **
  6. ** This file is part of the QtWidgets module of the Qt Toolkit.
  7. **
  8. ** $QT_BEGIN_LICENSE:LGPL$
  9. ** Commercial License Usage
  10. ** Licensees holding valid commercial Qt licenses may use this file in
  11. ** accordance with the commercial license agreement provided with the
  12. ** Software or, alternatively, in accordance with the terms contained in
  13. ** a written agreement between you and The Qt Company. For licensing terms
  14. ** and conditions see https://www.qt.io/terms-conditions. For further
  15. ** information use the contact form at https://www.qt.io/contact-us.
  16. **
  17. ** GNU Lesser General Public License Usage
  18. ** Alternatively, this file may be used under the terms of the GNU Lesser
  19. ** General Public License version 3 as published by the Free Software
  20. ** Foundation and appearing in the file LICENSE.LGPL3 included in the
  21. ** packaging of this file. Please review the following information to
  22. ** ensure the GNU Lesser General Public License version 3 requirements
  23. ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
  24. **
  25. ** GNU General Public License Usage
  26. ** Alternatively, this file may be used under the terms of the GNU
  27. ** General Public License version 2.0 or (at your option) the GNU General
  28. ** Public license version 3 or any later version approved by the KDE Free
  29. ** Qt Foundation. The licenses are as published by the Free Software
  30. ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
  31. ** included in the packaging of this file. Please review the following
  32. ** information to ensure the GNU General Public License requirements will
  33. ** be met: https://www.gnu.org/licenses/gpl-2.0.html and
  34. ** https://www.gnu.org/licenses/gpl-3.0.html.
  35. **
  36. ** $QT_END_LICENSE$
  37. **
  38. ****************************************************************************/
  39. #ifndef QSCROLLBAR_H
  40. #define QSCROLLBAR_H
  41. #include <QtWidgets/qwidget.h>
  42. #include <QtWidgets/qabstractslider.h>
  43. QT_BEGIN_NAMESPACE
  44. #ifndef QT_NO_SCROLLBAR
  45. class QScrollBarPrivate;
  46. class QStyleOptionSlider;
  47. class Q_WIDGETS_EXPORT QScrollBar : public QAbstractSlider
  48. {
  49. Q_OBJECT
  50. public:
  51. explicit QScrollBar(QWidget *parent = Q_NULLPTR);
  52. explicit QScrollBar(Qt::Orientation, QWidget *parent = Q_NULLPTR);
  53. ~QScrollBar();
  54. QSize sizeHint() const Q_DECL_OVERRIDE;
  55. bool event(QEvent *event) Q_DECL_OVERRIDE;
  56. protected:
  57. #ifndef QT_NO_WHEELEVENT
  58. void wheelEvent(QWheelEvent *) Q_DECL_OVERRIDE;
  59. #endif
  60. void paintEvent(QPaintEvent *) Q_DECL_OVERRIDE;
  61. void mousePressEvent(QMouseEvent *) Q_DECL_OVERRIDE;
  62. void mouseReleaseEvent(QMouseEvent *) Q_DECL_OVERRIDE;
  63. void mouseMoveEvent(QMouseEvent *) Q_DECL_OVERRIDE;
  64. void hideEvent(QHideEvent*) Q_DECL_OVERRIDE;
  65. void sliderChange(SliderChange change) Q_DECL_OVERRIDE;
  66. #ifndef QT_NO_CONTEXTMENU
  67. void contextMenuEvent(QContextMenuEvent *) Q_DECL_OVERRIDE;
  68. #endif
  69. void initStyleOption(QStyleOptionSlider *option) const;
  70. private:
  71. friend class QAbstractScrollAreaPrivate;
  72. friend Q_WIDGETS_EXPORT QStyleOptionSlider qt_qscrollbarStyleOption(QScrollBar *scrollBar);
  73. Q_DISABLE_COPY(QScrollBar)
  74. Q_DECLARE_PRIVATE(QScrollBar)
  75. #ifndef QT_NO_ITEMVIEWS
  76. friend class QTableView;
  77. friend class QTreeViewPrivate;
  78. friend class QCommonListViewBase;
  79. friend class QListModeViewBase;
  80. friend class QAbstractItemView;
  81. #endif
  82. };
  83. #endif // QT_NO_SCROLLBAR
  84. QT_END_NAMESPACE
  85. #endif // QSCROLLBAR_H