1 /*

     2 * Copyright (c) 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:   

    15 *

    16 */

    17 

    18 

    19 

    20 #include "HuiFxColorParameter.h"

    21 #include <gdi.h>

    22 

    23 template<>

    24 TUint32 RHuiFxColorTimeLine::ToFixedPoint(const TRgb& aValue)

    25     {

    26     return aValue.Internal();

    27     }

    28 

    29 template<>

    30 TRgb RHuiFxColorTimeLine::FromFixedPoint(const TUint32& aValue)

    31     {

    32     return TRgb(aValue);

    33     }

    34 

    35 template<>

    36 TUint32 RHuiFxColorTimeLine::Blend(const TUint32& aValue1, const TUint32& aValue2, TInt32 aAlpha)

    37     {

    38     TUint32 redBlue1    = (aValue1 & 0x00ff00ff);

    39     TUint32 alphaGreen1 = (aValue1 & 0xff00ff00) >> 8;

    40     TUint32 redBlue2    = (aValue2 & 0x00ff00ff);

    41     TUint32 alphaGreen2 = (aValue2 & 0xff00ff00) >> 8;

    42     

    43     TUint32 redBlueDelta    = redBlue2 - redBlue1; 

    44     TUint32 alphaGreenDelta = alphaGreen2 - alphaGreen1;

    45 

    46     aAlpha >>= 8;

    47     

    48     redBlueDelta    = (redBlueDelta * aAlpha) >> 8;

    49     alphaGreenDelta = (alphaGreenDelta * aAlpha) >> 8;

    50 

    51     redBlue1    += (redBlueDelta & 0xff00ff);

    52     alphaGreen1 += (alphaGreenDelta & 0xff00ff);

    53     

    54     return redBlue1 | (alphaGreen1 << 8);

    55     }

    56 

    57 template<>

    58 TUint32 RHuiFxColorTimeLine::WeightedSum4(const TUint32& aValue1, const TUint32& aValue2, const TUint32& aValue3, const TUint32& aValue4,

    59                                           TInt32 aWeight1, TInt32 aWeight2, TInt32 aWeight3, TInt32 aWeight4)

    60     {

    61     TUint32 a1 = ((aValue1 & 0xff000000) >> 24) * aWeight1;

    62     TUint32 a2 = ((aValue2 & 0xff000000) >> 24) * aWeight2;

    63     TUint32 a3 = ((aValue3 & 0xff000000) >> 24) * aWeight3;

    64     TUint32 a4 = ((aValue4 & 0xff000000) >> 24) * aWeight4;

    65     

    66     TUint32 r1 = ((aValue1 & 0x00ff0000) >> 16) * aWeight1;

    67     TUint32 r2 = ((aValue2 & 0x00ff0000) >> 16) * aWeight2;

    68     TUint32 r3 = ((aValue3 & 0x00ff0000) >> 16) * aWeight3;

    69     TUint32 r4 = ((aValue4 & 0x00ff0000) >> 16) * aWeight4;

    70 

    71     TUint32 g1 = ((aValue1 & 0x0000ff00) >> 8) * aWeight1;

    72     TUint32 g2 = ((aValue2 & 0x0000ff00) >> 8) * aWeight2;

    73     TUint32 g3 = ((aValue3 & 0x0000ff00) >> 8) * aWeight3;

    74     TUint32 g4 = ((aValue4 & 0x0000ff00) >> 8) * aWeight4;

    75     

    76     TUint32 b1 = (aValue1 & 0x000000ff) * aWeight1;

    77     TUint32 b2 = (aValue2 & 0x000000ff) * aWeight2;

    78     TUint32 b3 = (aValue3 & 0x000000ff) * aWeight3;

    79     TUint32 b4 = (aValue4 & 0x000000ff) * aWeight4;

    80     

    81     TUint32 a = ((a1 + a2 + a3 + a4) << 8)  & 0xff000000;

    82     TUint32 r = ((r1 + r2 + r3 + r4))       & 0x00ff0000;

    83     TUint32 g = ((g1 + g2 + g3 + g4) >> 8)  & 0x0000ff00;

    84     TUint32 b = ((b1 + b2 + b3 + b4) >> 16) & 0x000000ff;

    85     

    86     return (a | r | g | b);

    87     }