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 

    19 #ifndef HGSCROLLBAR_H_

    20 #define HGSCROLLBAR_H_

    21 

    22 

    23 #include <e32base.h>

    24 #include <ganes/HgScroller.h>

    25 

    26 struct TPointerEvent;

    27 class TAknsItemID;

    28 class CWindowGc;

    29 class CFbsBitmap;

    30 class CGulIcon;

    31 class CFont;

    32 

    33 class MHgScrollbarObserver;

    34 

    35 NONSHARABLE_CLASS( CHgScrollbar ) : public CBase

    36     {

    37 public:

    38     static CHgScrollbar* NewL( MHgScrollbarObserver& aObserver );

    39     

    40     virtual ~CHgScrollbar();

    41     

    42 public:

    43 

    44     void InitScrollBarL(

    45             TRect aScrollbarRect,

    46             TSize aTotalSize,

    47             TSize aViewSize,

    48             TBool aLandscapeScrolling );

    49     

    50     void SetViewPosition( TPoint aPosition );

    51     

    52     TBool HandlePointerEventL( const TPointerEvent& aEvent );

    53 

    54     void Draw( CWindowGc& aGc );

    55 

    56     const CGulIcon* ScrollbarBg() const;

    57     

    58     const CGulIcon* ScrollbarHandleBg() const;

    59     

    60     const CGulIcon* ScrollbarHandle() const;

    61     

    62     const CGulIcon* ScrollbarBgSelected() const;

    63     

    64     const CGulIcon* ScrollbarHandleSelected() const;

    65     

    66     const TRect& ScrollbarRect() const;

    67     

    68     const TPoint& HandlePosition() const;

    69     

    70     TBool IsStatic() const;

    71     

    72     TBool IsDragging() const;

    73     

    74     TBool Handler() const;

    75     

    76     void Reset();

    77         

    78 protected:

    79     CHgScrollbar( MHgScrollbarObserver& aObserver );

    80     

    81     void ConstructL();

    82     

    83 private:

    84 

    85     void DrawScrollbar( CWindowGc& aGc );

    86 

    87     TBool HandleScrollBarPointerEvent( const TPointerEvent& aEvent );    

    88     

    89     void CheckHandlePosition( TBool aReportChange );

    90     

    91     void InitIconsL( TBool aInitBgIcons );

    92     

    93     void CreateIconL( CGulIcon*& aIcon, TSize aSize);

    94     

    95     void DrawIconL( CGulIcon& aIcon,

    96             const TAknsItemID& aTop,

    97             const TAknsItemID& aMiddle,

    98             const TAknsItemID& aBottom );

    99 

   100     void DrawBitmapL( CGulIcon& aIcon,

   101             const TAknsItemID& aItem,

   102             const TRect& aDestRect );

   103 

   104     void ScaleBitmapL( const TRect& aDestRect,

   105             CFbsBitmap* aDest,

   106             const CFbsBitmap* aSrc);

   107 

   108 private:

   109     MHgScrollbarObserver& iObserver;

   110     

   111     CGulIcon* iScrollbarBg;

   112     CGulIcon* iScrollbarHandleBg;

   113     CGulIcon* iScrollbarHandle;

   114     CGulIcon* iScrollbarBgSelected;

   115     CGulIcon* iScrollbarHandleSelected;

   116 

   117     TRect iScrollbarRect;

   118     TRect iNaviRect;

   119     TPoint iHandlePosition;

   120     TPoint iPrevDrag;

   121     TSize iTotalSize;

   122     TSize iViewSize;

   123     TSize iHandleSize;

   124     TBool iLandscapeScrolling;

   125     TBool iDragging;

   126     TBool iHandler;

   127     TBool iStatic;

   128     

   129     TInt iScrollLength;

   130     TInt iTotalLength;

   131     };

   132 

   133 #endif /*HGSCROLLBAR_H_*/