1 /*

     2 * Copyright (c) 2009 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 RADIOSTRIPBASE_H_

    19 #define RADIOSTRIPBASE_H_

    20 

    21 // System includes

    22 #include <hbscrollarea.h>

    23 

    24 // Forward declarations

    25 class HbWidget;

    26 class QAbstractItemModel;

    27 

    28 // Class declaration

    29 class RadioStripBase : public HbScrollArea

    30 {

    31     Q_OBJECT

    32     Q_PROPERTY( HbIcon background READ background WRITE setBackground )

    33     Q_PROPERTY( int autoScrollTime READ autoScrollTime WRITE setAutoScrollTime )

    34 

    35 public:

    36 

    37     virtual ~RadioStripBase();

    38 

    39     void setBackground( const HbIcon& background );

    40     HbIcon background() const;

    41     void setAutoScrollTime( const int time );

    42     int autoScrollTime() const;

    43 

    44     void setModel( QAbstractItemModel* model );

    45     QAbstractItemModel* model() const;

    46 

    47     void setCyclic( bool isCyclic );

    48     void setSpacing( qreal spacing );

    49     void setAutoCenter( bool autoCenter );

    50     void setItemSize( const QSizeF& size );

    51     void setIndex( int index, bool animateToCenter );

    52 

    53 protected:

    54 

    55     RadioStripBase( QGraphicsItem* parent );

    56 

    57 // from base class QGraphicsWidget

    58 

    59     void resizeEvent( QGraphicsSceneResizeEvent* event );

    60 

    61 // from base class QGraphicsItem

    62 

    63     void mousePressEvent( QGraphicsSceneMouseEvent* event );

    64     void mouseReleaseEvent( QGraphicsSceneMouseEvent* event );

    65 

    66 private slots:

    67 

    68     void scrollPositionChanged( QPointF newPosition );

    69 

    70 private:

    71 

    72     Q_DISABLE_COPY( RadioStripBase )

    73 

    74     virtual void updateItemPrimitive( QGraphicsItem* itemToUpdate, int itemIndex ) = 0;

    75     virtual QGraphicsItem* createItemPrimitive( QGraphicsItem *parent ) = 0;

    76 

    77     virtual void scrollPosChanged( QPointF newPosition );

    78 

    79     void moveAllItemsToPool();

    80 

    81     void populateAndLayout();

    82 

    83     QGraphicsItem* constructItem( int index, bool append );

    84 

    85     QGraphicsItem* getFromPool();

    86 

    87     void returnToPool( QGraphicsItem* item );

    88 

    89     qreal indexToOffset( int index );

    90 

    91     int offsetToIndex( qreal offset );

    92 

    93     void updateItemWithIndex( int index );

    94 

    95     void adjustItems();

    96 

    97 protected: // data

    98 

    99     int                     mAutoScrollTime;

   100 

   101 private: //data

   102 

   103     HbWidget*               mStripContainer;

   104 

   105     QAbstractItemModel*     mModel;

   106 

   107     bool                    mIsCyclic;

   108     bool                    mAutoCenter;

   109 

   110     qreal                   mSpacing;

   111 

   112     QSizeF                  mItemSize;

   113 

   114     QList<QGraphicsItem*>   mItemPool;

   115     QGraphicsWidget*        mItemPoolParent;

   116 

   117     int                     mCurrentIndex;

   118     int                     mPressedIndex;

   119 

   120     qreal                   mStripLength;

   121     qreal                   mContentsLength;

   122 

   123     QList<QGraphicsItem*>   mItemAtSlot;

   124     QList<int>              mIndexAtSlot; // Can be bigger than rowcount if cyclic is used

   125 

   126     HbIcon                  mBackground;

   127 

   128     QGraphicsPixmapItem*    mBackgroundImage;

   129 

   130 };

   131 

   132 

   133 #endif // RADIOSTRIPBASE_H_