1 /*

     2 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 #ifndef HGWIDGET_P_H

    19 #define HGWIDGET_P_H

    20 

    21 #include <hgwidgets/hgwidgets.h>

    22 #include <hbwidget_p.h>

    23 #include <QTimer>

    24 #include <QTime>

    25 

    26 class QAbstractItemModel;

    27 class HgContainer;

    28 class HgScrollBufferManager;

    29 class QGraphicsLinearLayout;

    30 class HgIndexFeedback;

    31 

    32 class HgWidgetPrivate : public HbWidgetPrivate

    33 {

    34     Q_DECLARE_PUBLIC(HgWidget)

    35 

    36 public:

    37 

    38     HgWidgetPrivate();

    39     virtual ~HgWidgetPrivate();

    40 

    41     void init(HgContainer *container);

    42 

    43     void setModel(QAbstractItemModel *model);

    44 

    45     void setSelectionModel(QItemSelectionModel *selectionModel);

    46     QItemSelectionModel *selectionModel() const;

    47 

    48     void setSelectionMode(HgWidget::SelectionMode mode, bool resetSelection);

    49     HgWidget::SelectionMode selectionMode() const;

    50     void selectAll();

    51     void clearSelection();

    52 

    53     QModelIndex currentIndex() const;

    54     void setCurrentIndex(const QModelIndex &index,

    55         QItemSelectionModel::SelectionFlags selectionFlag=QItemSelectionModel::NoUpdate);

    56 

    57     void scrollTo(const QModelIndex &index);

    58 

    59     bool getItemOutline(const QModelIndex& index, QPolygonF& points);

    60     void aboutToChangeOrientation();

    61     void orientationChanged(Qt::Orientation orientation);

    62     

    63     QList<QModelIndex> getVisibleItemIndices() const;

    64     Qt::Orientation scrollDirection() const;

    65 

    66     void setIndexFeedbackPolicy( HgWidget::IndexFeedbackPolicy policy);

    67     HgWidget::IndexFeedbackPolicy indexFeedbackPolicy() const;

    68     

    69 private:

    70 

    71     void clearCurrentModel();

    72     void initializeNewModel();

    73 

    74     void adjustGeometry();

    75 

    76     void createScrollBar(Qt::Orientation orientation);

    77     

    78     void setScrollBarPolicy(HgWidget::ScrollBarPolicy policy);

    79     void replaceScrollBar(HbScrollBar *scrollBar);

    80 

    81     virtual void updateScrollMetrics( qreal pos = 0 );

    82     void prepareScrollBars( qreal pos = 0);

    83 

    84     virtual void updateScrollBar(qreal pos = 0);

    85     void displayScrollBar(qreal pos = 0);

    86     void setScrollBarMetrics(qreal pos = 0);

    87 

    88     void lostForeground();

    89     void gainedForeground();

    90     

    91     // private slot functions

    92     void _q_scrollPositionChanged(qreal index, bool scrollBarAnimation);

    93     void _q_releaseItems( int releaseStart, int releaseEnd );

    94     void _q_requestItems( int requestStart, int requestEnd );

    95     void _q_hideScrollBars();

    96     void _q_thumbPositionChanged(qreal value, Qt::Orientation orientation);

    97     void _q_insertRows(const QModelIndex &parent, int start, int end);

    98     void _q_removeRows(const QModelIndex &parent, int start, int end);

    99     void _q_moveRows(const QModelIndex &sourceParent, int sourceStart,

   100                      int sourceEnd, const QModelIndex &destinationParent,

   101                      int destinationRow);

   102     void _q_groovePressed(qreal value, Qt::Orientation orientation);

   103 

   104 protected:

   105 

   106     QGraphicsLinearLayout *mLayout;

   107 

   108     HgContainer *mContainer;

   109     HgScrollBufferManager *mBufferManager;

   110 

   111     QAbstractItemModel *mModel;

   112     QItemSelectionModel *mSelectionModel;

   113     QItemSelectionModel *mDefaultSelectionModel;

   114 

   115     HbScrollBar *mScrollBar;

   116     HgWidget::ScrollBarPolicy mScrollBarPolicy;

   117     bool mAbleToScroll;

   118     QTimer mScrollBarHideTimer;

   119 

   120     bool mHandleLongPress;

   121     bool mForeground;

   122     int mBufferSize;

   123     HgIndexFeedback *mIndexFeedback;

   124 };

   125 

   126 #endif  //HGWIDGET_p_H

   127