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    41 

    42 #ifndef QCOLUMNVIEW_P_H

    43 #define QCOLUMNVIEW_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 for the convenience

    50 // of other Qt classes.  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 "qcolumnview.h"

    57 

    58 #ifndef QT_NO_QCOLUMNVIEW

    59 

    60 #include <private/qabstractitemview_p.h>

    61 

    62 #include <QtCore/qabstractitemmodel.h>

    63 #include <QtCore/qpropertyanimation.h>

    64 #include <QtGui/qabstractitemdelegate.h>

    65 #include <QtGui/qabstractitemview.h>

    66 #include <QtGui/qitemdelegate.h>

    67 #include <qlistview.h>

    68 #include <qevent.h>

    69 #include <qscrollbar.h>

    70 

    71 QT_BEGIN_NAMESPACE

    72 

    73 class QColumnViewPreviewColumn : public QAbstractItemView {

    74 

    75 public:

    76     QColumnViewPreviewColumn(QWidget *parent) : QAbstractItemView(parent), previewWidget(0) {

    77     }

    78 

    79     void setPreviewWidget(QWidget *widget) {

    80         previewWidget = widget;

    81         setMinimumWidth(previewWidget->minimumWidth());

    82     }

    83 

    84     void resizeEvent(QResizeEvent * event){

    85         if (!previewWidget)

    86             return;

    87         previewWidget->resize(

    88                 qMax(previewWidget->minimumWidth(), event->size().width()),

    89                 previewWidget->height());

    90         QSize p = viewport()->size();

    91         QSize v = previewWidget->size();

    92         horizontalScrollBar()->setRange(0, v.width() - p.width());

    93         horizontalScrollBar()->setPageStep(p.width());

    94         verticalScrollBar()->setRange(0, v.height() - p.height());

    95         verticalScrollBar()->setPageStep(p.height());

    96 

    97         QAbstractScrollArea::resizeEvent(event);

    98     }

    99 

   100     QRect visualRect(const QModelIndex &) const

   101     {

   102         return QRect();

   103     }

   104     void scrollTo(const QModelIndex &, ScrollHint)

   105     {

   106     }

   107     QModelIndex indexAt(const QPoint &) const

   108     {

   109         return QModelIndex();

   110     }

   111     QModelIndex moveCursor(CursorAction, Qt::KeyboardModifiers)

   112     {

   113         return QModelIndex();

   114     }

   115     int horizontalOffset () const {

   116         return 0;

   117     }

   118     int verticalOffset () const {

   119         return 0;

   120     }

   121     QRegion visualRegionForSelection(const QItemSelection &) const

   122     {

   123         return QRegion();

   124     }

   125     bool isIndexHidden(const QModelIndex &) const

   126     {

   127         return false;

   128     }

   129     void setSelection(const QRect &, QItemSelectionModel::SelectionFlags)

   130     {

   131     }

   132 private:

   133     QWidget *previewWidget;

   134 };

   135 

   136 class Q_AUTOTEST_EXPORT QColumnViewPrivate : public QAbstractItemViewPrivate

   137 {

   138     Q_DECLARE_PUBLIC(QColumnView)

   139 

   140 public:

   141     QColumnViewPrivate();

   142     ~QColumnViewPrivate();

   143     void initialize();

   144 

   145     QAbstractItemView *createColumn(const QModelIndex &index, bool show);

   146 

   147     void updateScrollbars();

   148     void closeColumns(const QModelIndex &parent = QModelIndex(), bool build = false);

   149     void doLayout();

   150     void setPreviewWidget(QWidget *widget);

   151     void checkColumnCreation(const QModelIndex &parent);

   152 

   153 

   154     void _q_gripMoved(int offset);

   155     void _q_changeCurrentColumn();

   156     void _q_clicked(const QModelIndex &index);

   157     void _q_columnsInserted(const QModelIndex &parent, int start, int end);

   158 

   159     QList<QAbstractItemView*> columns;

   160     QVector<int> columnSizes; // used during init and corner moving

   161     bool showResizeGrips;

   162     int offset;

   163 #ifndef QT_NO_ANIMATION

   164     QPropertyAnimation currentAnimation;

   165 #endif

   166     QWidget *previewWidget;

   167     QAbstractItemView *previewColumn;

   168 };

   169 

   170 /*!

   171  * This is a delegate that will paint the triangle

   172  */

   173 class QColumnViewDelegate : public QItemDelegate

   174 {

   175 

   176 public:

   177     explicit QColumnViewDelegate(QObject *parent = 0) : QItemDelegate(parent) {}

   178     ~QColumnViewDelegate() {}

   179 

   180     void paint(QPainter *painter,

   181                const QStyleOptionViewItem &option,

   182                const QModelIndex &index) const;

   183 };

   184 #endif // QT_NO_QCOLUMNVIEW

   185 

   186 

   187 QT_END_NAMESPACE

   188 #endif //QCOLUMNVIEW_P_H

   189