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 #include <e32base.h>

    18 #include "AknExtendedFaderGfx.h"

    19 

    20 

    21 void TAknExtendedFaderGfx::FadeRect_GrayColorize_16MX(TUint32* aPixels, TUint32 aStrideInPixels, TInt x1, TInt y1, TInt x2, TInt y2, const TInt aFadeMapFactor, const TInt aFadeMapOffset, const TUint32 aROverlay, const TUint32 aGOverlay, const TUint32 aBOverlay)

    22 	{	

    23 	// Width and height of the rectangle

    24 	TUint32 width = x2-x1;

    25 	TUint32 height = y2-y1;

    26 	

    27 	// Get pointer to first pixel

    28 	register TUint32* data = aPixels + x1 + aStrideInPixels*y1;

    29 	

    30 	// Padding is the amount of bytes we need to skip after single scanline to reach the beginning of the next one

    31 	TUint32 padding = (aStrideInPixels - width)<<2;

    32 

    33 	// Align address to 32-byte boundary

    34 	TUint32 leftwidth, middlewidth, rightwidth;	

    35 	AlignTo32Bytes(data, width, leftwidth, middlewidth, rightwidth);

    36 

    37 	// 8 pixels at a time in the midsection

    38 	middlewidth>>=3;

    39 	

    40 	// Shift offset so we can remove one shift operation for each pixel

    41 	const TUint32 shiftedFadeMapOffset = aFadeMapOffset << 18;

    42 	

    43 	// Constants for greyscale conversion

    44 	const TUint32 KRBCoef(0x0144007C); // Coefficients for R & B: 324, 124 (/ 1024)

    45 	const TUint32 KGCoef(0x00000240);  // Coefficient for G: 576

    46 	TUint32 rbOverlay = (aROverlay << 16) | aBOverlay; // Combine R & B overlays to do two calculations at once

    47 	

    48 	FadeAlignedRect_GrayColorize_16MX(data, height, KRBCoef, KGCoef, aFadeMapFactor, shiftedFadeMapOffset, rbOverlay, aGOverlay, leftwidth, middlewidth, rightwidth, padding);

    49 	}

    50 

    51 

    52 void TAknExtendedFaderGfx::FadeRect_GrayColorize_64K(TUint16* aPixels, TUint32 aStrideInPixels, TInt x1, TInt y1, TInt x2, TInt y2, const TInt aFadeMapFactor, const TInt aFadeMapOffset, const TUint32 aROverlay, const TUint32 aGOverlay, const TUint32 aBOverlay)

    53 	{	

    54 	// Width and height of the rectangle

    55 	TUint32 width = x2-x1;

    56 	TUint32 height = y2-y1;

    57 	

    58 	// Get pointer to first pixel

    59 	register TUint16* data = aPixels + x1 + aStrideInPixels*y1;

    60 	

    61 	// Padding is the amount of pixels we need to skip after single scanline to reach the beginning of the next one

    62 	TUint32 padding = aStrideInPixels - width;

    63 		

    64 	// Helper variables

    65 	register TInt x;

    66 	

    67 	while(height--)

    68 		{

    69 		x = width;

    70 

    71 		while(x--)

    72 			{

    73 			// Process pixels

    74 			*data++ = PixelToGrayscaleWithFade_64K((TUint32)*data, aFadeMapFactor, aFadeMapOffset, aROverlay, aGOverlay, aBOverlay);

    75 			}

    76 

    77 		data+=padding;

    78 		}

    79 	}

    80