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    41 

    42 #ifndef QABSTRACTSCROLLAREA_P_H

    43 #define QABSTRACTSCROLLAREA_P_H

    44 

    45 //

    46 //  W A R N I N G

    47 //  -------------

    48 //

    49 // This file is not part of the Qt API.  It exists purely as an

    50 // implementation detail.  This header file may change from version to

    51 // version without notice, or even be removed.

    52 //

    53 // We mean it.

    54 //

    55 

    56 #include "private/qframe_p.h"

    57 #include "qabstractscrollarea.h"

    58 

    59 QT_BEGIN_NAMESPACE

    60 

    61 #ifndef QT_NO_SCROLLAREA

    62 

    63 class QScrollBar;

    64 class QAbstractScrollAreaScrollBarContainer;

    65 class Q_AUTOTEST_EXPORT QAbstractScrollAreaPrivate: public QFramePrivate

    66 {

    67     Q_DECLARE_PUBLIC(QAbstractScrollArea)

    68 

    69 public:

    70     QAbstractScrollAreaPrivate();

    71 

    72     void replaceScrollBar(QScrollBar *scrollBar, Qt::Orientation orientation);

    73 

    74     QAbstractScrollAreaScrollBarContainer *scrollBarContainers[Qt::Vertical + 1];

    75     QScrollBar *hbar, *vbar;

    76     Qt::ScrollBarPolicy vbarpolicy, hbarpolicy;

    77 

    78     QWidget *viewport;

    79     QWidget *cornerWidget;

    80     QRect cornerPaintingRect;

    81 #ifdef Q_WS_MAC

    82     QRect reverseCornerPaintingRect;

    83 #endif

    84     int left, top, right, bottom; // viewport margin

    85 

    86     int xoffset, yoffset;

    87 

    88     void init();

    89     void layoutChildren();

    90     // ### Fix for 4.4, talk to Bjoern E or Girish.

    91     virtual void scrollBarPolicyChanged(Qt::Orientation, Qt::ScrollBarPolicy) {}

    92 

    93     void _q_hslide(int);

    94     void _q_vslide(int);

    95     void _q_showOrHideScrollBars();

    96 

    97     virtual QPoint contentsOffset() const;

    98 

    99     inline bool viewportEvent(QEvent *event)

   100     { return q_func()->viewportEvent(event); }

   101     QScopedPointer<QObject> viewportFilter;

   102 

   103 #ifdef Q_WS_WIN

   104     bool singleFingerPanEnabled;

   105     void setSingleFingerPanEnabled(bool on = true);

   106 #endif

   107 };

   108 

   109 class QAbstractScrollAreaFilter : public QObject

   110 {

   111     Q_OBJECT

   112 public:

   113     QAbstractScrollAreaFilter(QAbstractScrollAreaPrivate *p) : d(p)

   114     { setObjectName(QLatin1String("qt_abstractscrollarea_filter")); }

   115     bool eventFilter(QObject *o, QEvent *e)

   116     { return (o == d->viewport ? d->viewportEvent(e) : false); }

   117 private:

   118     QAbstractScrollAreaPrivate *d;

   119 };

   120 

   121 class QBoxLayout;

   122 class QAbstractScrollAreaScrollBarContainer : public QWidget

   123 {

   124 public:

   125     enum LogicalPosition { LogicalLeft = 1, LogicalRight = 2 };

   126 

   127     QAbstractScrollAreaScrollBarContainer(Qt::Orientation orientation, QWidget *parent);

   128     void addWidget(QWidget *widget, LogicalPosition position);

   129     QWidgetList widgets(LogicalPosition position);

   130     void removeWidget(QWidget *widget);

   131 

   132     QScrollBar *scrollBar;

   133     QBoxLayout *layout;

   134 private:

   135     int scrollBarLayoutIndex() const;

   136 

   137     Qt::Orientation orientation;

   138 };

   139 

   140 #endif // QT_NO_SCROLLAREA

   141 

   142 QT_END_NAMESPACE

   143 

   144 #endif // QABSTRACTSCROLLAREA_P_H