skins/AknSkins/rlpluginsrc/AknsRlExpand.cpp
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     1 /*
       
     2 * Copyright (c) 2006-2008 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:  Expands basic effect set.
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 // INCLUDE FILES
       
    20 #include <fbs.h>
       
    21 
       
    22 #include "AknsRlExpand.h"
       
    23 
       
    24 // ============================ MEMBER FUNCTIONS ===============================
       
    25 
       
    26 // -----------------------------------------------------------------------------
       
    27 // CAknsRlScanline::CAknsRlScanline
       
    28 // -----------------------------------------------------------------------------
       
    29 //
       
    30 CAknsRlScanline::CAknsRlScanline():
       
    31     iSize( 0 ), iPitch( 0 ), iMemOwned( EFalse ), iMem32( NULL )
       
    32     {}
       
    33 
       
    34 // -----------------------------------------------------------------------------
       
    35 // CAknsRlScanline::~CAknsRlScanline
       
    36 // -----------------------------------------------------------------------------
       
    37 //
       
    38 CAknsRlScanline::~CAknsRlScanline()
       
    39     {
       
    40     DeleteMem(); //lint !e1551 No exception thrown
       
    41     }
       
    42 
       
    43 // -----------------------------------------------------------------------------
       
    44 // CAknsRlScanline::DeleteMem
       
    45 // -----------------------------------------------------------------------------
       
    46 //
       
    47 void CAknsRlScanline::DeleteMem()
       
    48     {
       
    49     if( iMemOwned )
       
    50         {
       
    51         delete [] iMem32;
       
    52         }
       
    53 
       
    54     iMem32 = NULL;
       
    55     iMemOwned = EFalse;
       
    56     iSize = 0;
       
    57     iPitch = 0;
       
    58     }
       
    59 
       
    60 // -----------------------------------------------------------------------------
       
    61 // CAknsRlScanline::BytesToDwords
       
    62 // -----------------------------------------------------------------------------
       
    63 //
       
    64 TUint32 CAknsRlScanline::BytesToDwords( TUint32 aBytes ) const
       
    65     {
       
    66     // Smallest number of dwords that can contain all of the bytes
       
    67     return ( aBytes + 3 ) >> 2;
       
    68     }
       
    69 
       
    70 // -----------------------------------------------------------------------------
       
    71 // CAknsRlScanline::AllocateL
       
    72 // -----------------------------------------------------------------------------
       
    73 //
       
    74 void CAknsRlScanline::AllocateL( TUint32 aDwords )
       
    75     {
       
    76     if( iSize == aDwords && iMemOwned )
       
    77         {
       
    78         return; // Buffer size already ok
       
    79         }
       
    80 
       
    81     if( iMemOwned )
       
    82         {
       
    83         delete [] iMem32;
       
    84         }
       
    85 
       
    86     iMem32 = NULL;
       
    87     iMem32 = new TUint32[ aDwords ]; //lint !e119 Quite enough params
       
    88 
       
    89     if( !iMem32 )
       
    90         {
       
    91         User::Leave( KErrNoMemory );
       
    92         }
       
    93 
       
    94     iMemOwned = ETrue;
       
    95     iSize = aDwords;
       
    96     iPitch = 0;
       
    97     }
       
    98 
       
    99 // -----------------------------------------------------------------------------
       
   100 // CAknsRlScanline::Color8L
       
   101 // -----------------------------------------------------------------------------
       
   102 //
       
   103 void CAknsRlScanline::Color8L( TInt aWidth, TUint8 aValue )
       
   104     {
       
   105     AllocateL( BytesToDwords( aWidth * sizeof( TUint8 ) ) );
       
   106 
       
   107     TUint8* mem = (TUint8*) iMem32;
       
   108     for( TInt i=0; i < aWidth; i++ )
       
   109         mem[i] = aValue;
       
   110 
       
   111     iPitch = -aWidth;
       
   112     }
       
   113 
       
   114 // -----------------------------------------------------------------------------
       
   115 // CAknsRlScanline::Color16L
       
   116 // -----------------------------------------------------------------------------
       
   117 //
       
   118 void CAknsRlScanline::Color16L( TInt aWidth, TUint16 aValue )
       
   119     {
       
   120     AllocateL( BytesToDwords( aWidth * sizeof( TUint16 ) ) );
       
   121 
       
   122     TUint16* mem = (TUint16*) iMem32;
       
   123     for( TInt i=0; i < aWidth; i++ )
       
   124         mem[i] = aValue;
       
   125 
       
   126     iPitch = -aWidth;
       
   127     }
       
   128 
       
   129 // -----------------------------------------------------------------------------
       
   130 // CAknsRlScanline::Color32L
       
   131 // -----------------------------------------------------------------------------
       
   132 //
       
   133 void CAknsRlScanline::Color32L( TInt aWidth, TUint32 aValue )
       
   134     {
       
   135     AllocateL( aWidth );
       
   136 
       
   137     for( TInt i=0; i < aWidth; i++ )
       
   138         iMem32[i] = aValue;
       
   139 
       
   140     iPitch = -aWidth;
       
   141     }
       
   142 
       
   143 // -----------------------------------------------------------------------------
       
   144 // CAknsRlScanline::Bitmap8L
       
   145 // -----------------------------------------------------------------------------
       
   146 //
       
   147 void CAknsRlScanline::Bitmap8L( TInt aWidth, const CFbsBitmap& aBitmap )
       
   148     {
       
   149     DeleteMem();
       
   150 
       
   151     iMem32 = aBitmap.DataAddress(); //lint !e672 !e423 Referencing only
       
   152     // ScanLineLength returns bytes
       
   153     TInt scanW  = CFbsBitmap::ScanLineLength( aWidth, aBitmap.DisplayMode()) /
       
   154                   TInt( sizeof(TUint8) );
       
   155     iPitch = scanW - aWidth;
       
   156     }
       
   157 
       
   158 // -----------------------------------------------------------------------------
       
   159 // CAknsRlScanline::Bitmap16L
       
   160 // -----------------------------------------------------------------------------
       
   161 //
       
   162 void CAknsRlScanline::Bitmap16L( TInt aWidth, const CFbsBitmap& aBitmap )
       
   163     {
       
   164     DeleteMem();
       
   165 
       
   166     iMem32 = aBitmap.DataAddress(); //lint !e672 !e423 Referencing only
       
   167     // ScanLineLength returns bytes
       
   168     TInt scanW  = CFbsBitmap::ScanLineLength( aWidth, aBitmap.DisplayMode()) /
       
   169                   TInt( sizeof(TUint16) );
       
   170     iPitch = scanW - aWidth;
       
   171     }
       
   172 
       
   173 // -----------------------------------------------------------------------------
       
   174 // CAknsRlScanline::Bitmap32L
       
   175 // -----------------------------------------------------------------------------
       
   176 //
       
   177 void CAknsRlScanline::Bitmap32L( TInt aWidth, const CFbsBitmap& aBitmap )
       
   178     {
       
   179     DeleteMem();
       
   180 
       
   181     iMem32 = aBitmap.DataAddress(); //lint !e672 !e423 Referencing only
       
   182     // ScanLineLength returns bytes
       
   183     TInt scanW  = CFbsBitmap::ScanLineLength( aWidth, aBitmap.DisplayMode()) /
       
   184                   TInt( sizeof(TUint32) );
       
   185     iPitch = scanW - aWidth;
       
   186     }
       
   187 
       
   188 // ============================ MEMBER FUNCTIONS ===============================
       
   189 
       
   190 // -----------------------------------------------------------------------------
       
   191 // C++ constructor.
       
   192 // -----------------------------------------------------------------------------
       
   193 //
       
   194 CAknsRlScanlines::CAknsRlScanlines()
       
   195     {}
       
   196 
       
   197 // -----------------------------------------------------------------------------
       
   198 // Destructor.
       
   199 // -----------------------------------------------------------------------------
       
   200 //
       
   201 CAknsRlScanlines::~CAknsRlScanlines()
       
   202     {}
       
   203 
       
   204 // -----------------------------------------------------------------------------
       
   205 // Symbian two-phased constructor.
       
   206 // -----------------------------------------------------------------------------
       
   207 //
       
   208 CAknsRlScanlines* CAknsRlScanlines::NewL()
       
   209     {
       
   210     CAknsRlScanlines* self = new(ELeave) CAknsRlScanlines();
       
   211     return self;
       
   212     }
       
   213 
       
   214 // End of file