/*

* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#include <lcdgdrv.h>

#include "lcdgdrvif.h"

#include "calctransform.h"

#include "lcdgdev.h"

CLcdGraphicsDeviceImpl::CLcdGraphicsDeviceImpl

(

    CLcdGraphicsDriver& aDriver,

    const TImageType& aTargetType,

    CRenderFunctions* aRenderers,

    const TColorMap& aColorMap,

    const TDrawFunctions& aDrawFunctions

)

        : iDriver(aDriver)

        , iRenderers(aRenderers)

        , iColorMap(aColorMap)

        , iDrawFunctions(aDrawFunctions)

{

    iRenderKey.iTargetType = aTargetType;

    ASSERT(iDrawFunctions.iDisplayMode == aTargetType.iColorMode);

}

CLcdGraphicsDeviceImpl::~CLcdGraphicsDeviceImpl()

{

    delete iRenderers;

}

TUint32 CLcdGraphicsDeviceImpl::DrawingCaps() const

{

    const TInt renderCaps = (CLcdGraphicsDevice::ECapDrawRegion | CLcdGraphicsDevice::ECapCopyRegion);

    return iDrawFunctions.iDrawCaps | renderCaps;

}

TUint32 CLcdGraphicsDeviceImpl::Quantize(TUint32 aRGB) const

{

    return (*iColorMap.iQuantize)(aRGB);

}

/**

 * Transforming biblt from aColorBitmap/aAlphaBitmap to target surface

 * Composites source image over destination image (either alpha blending

 * or masking as appropriate to <CODE>aSrcTransparency</CODE>).

 */

TInt CLcdGraphicsDeviceImpl::DrawRegion

(

    const TAcceleratedBitmapInfo*   aDstBitmap,

    const TRect&                    aDstRect,

    const TAcceleratedBitmapInfo*   aSrcColorBitmap,

    const TAcceleratedBitmapInfo*   aSrcAlphaBitmap,

    TTransparency                   aSrcTransparency,

    const TRect&                    aSrcRect,

    TTransformType                  aSrcTransform,

    const TRect&                    aClipRect

)

{

    TInt err = KErrNotSupported;

    TImageType sourceType;

    sourceType.iColorMode = aSrcColorBitmap->iDisplayMode;

    sourceType.iAlphaMode = aSrcAlphaBitmap ? aSrcAlphaBitmap->iDisplayMode : ENone;

    sourceType.iTransparency = aSrcTransparency;

    iRenderKey.iSourceType = TCompactImageType(sourceType);

    iRenderKey.iTransform = (1<<aSrcTransform);

    iRenderKey.iComposite  = ECompositeSrcOver;

    const TImageRenderer* renderer = iRenderers->Get(iRenderKey);

    if (renderer)

    {

        TImageRenderFunction drawRegion = renderer->iFunction;

        // calc source to target transform

        TLcdTransform transform = CalcTransform(aDstRect, aSrcRect, aSrcTransform);

        TRect dstRect(aDstRect);

        TRect srcRect(aSrcRect);

        TRect srcClipRect(aSrcColorBitmap->iSize);

        TRect dstClipRect(aDstBitmap->iSize);

        // clip cliprect to device rect

        dstClipRect.Intersection(aClipRect);

        // calculate source and target rects clipped to src and target bounds.

        ClipTransformRect(dstRect, srcRect, dstClipRect, srcClipRect, transform);

        dstRect.Intersection(dstClipRect);

        if (!dstRect.IsEmpty())

        {

            // calc target to source transform.

            transform = transform.Inverse();

            ASSERT(CheckBounds(aDstBitmap->iSize, aSrcColorBitmap->iSize, dstRect, transform));

            (*drawRegion)(aDstBitmap, NULL, dstRect, aSrcColorBitmap, aSrcAlphaBitmap, transform);

        }

        err = KErrNone;

    }

    return err;

}

/**

 * Transforming biblt from <CODE>aSrcColorBitmap,aSrcAlphaBitmap<CODE>

 * to <CODE>aDstColorBitmap,aDstAlphaBitmap</CODE>.

 * Copies source image pixels to destination image converting color

 * and transparency pixels to the destination format. Supports translation

 * and symmetry transformation of source image region, specified by

 * <CODE>aSrcTransform</CODE>.

 */

TInt CLcdGraphicsDeviceImpl::CopyRegion

(

    const TAcceleratedBitmapInfo* aDstBitmap,

    const TRect&                    aDstRect,

    const TAcceleratedBitmapInfo*   aSrcColorBitmap,

    const TAcceleratedBitmapInfo*   aSrcAlphaBitmap,

    TTransparency                   aSrcTransparency,

    const TRect&                    aSrcRect,

    TTransformType                  aSrcTransform,

    const TRect&                    aClipRect

)

{

    TInt err = KErrNotSupported;

    ASSERT(aDstBitmap->iAddress);

    TImageType sourceType;

    sourceType.iColorMode = aSrcColorBitmap->iDisplayMode;

    sourceType.iAlphaMode = aSrcAlphaBitmap ? aSrcAlphaBitmap->iDisplayMode : ENone;

    sourceType.iTransparency = aSrcTransparency;

    iRenderKey.iSourceType = TCompactImageType(sourceType);

    iRenderKey.iTransform = (1<<aSrcTransform);

    iRenderKey.iComposite  = ECompositeSrcCopy;

    const TImageRenderer* renderer = iRenderers->Get(iRenderKey);

    if (renderer)

    {

        TImageRenderFunction copyRegion = renderer->iFunction;

        // calc source to target transform

        TLcdTransform transform = CalcTransform(aDstRect, aSrcRect, aSrcTransform);

        TRect dstRect(aDstRect);

        TRect srcRect(aSrcRect);

        TRect srcClipRect(aSrcColorBitmap->iSize);

        TRect dstClipRect(aDstBitmap->iSize);

        // clip cliprect to device rect

        dstClipRect.Intersection(aClipRect);

        // clip source and target rects

        ClipTransformRect(dstRect, srcRect, dstClipRect, srcClipRect, transform);

        // check src and dst rects still correspond

        ASSERT(CheckTransform(dstRect, srcRect, transform));

        dstRect.Intersection(dstClipRect);

        if (!dstRect.IsEmpty())

        {

            // calc target to source transform.

            transform = transform.Inverse();

            // check source and dst rects lie within bounds

            ASSERT(CheckBounds(aDstBitmap->iSize, aSrcColorBitmap->iSize, dstRect, transform));

            (*copyRegion)(aDstBitmap, NULL, dstRect, aSrcColorBitmap, aSrcAlphaBitmap, transform);

        }

        err = KErrNone;

    }

    return err;

}

/*

 * Draw line from aStart to aEnd including both end points and

 * using line style TStrokeStyle.

 */

TInt CLcdGraphicsDeviceImpl::DrawLine

(

    const TAcceleratedBitmapInfo* aDstBitmap,

    const TPoint& aStart,

    const TPoint& aEnd,

    TUint32 aRGB,

    TStrokeStyle aStyle,

    const TRect& aClipRect

)

{

    TInt caps = ECapDrawLine;

    if (aStyle == EStrokeDotted)

    {

        caps |= ECapStrokeDotted;

    }

    if ((iDrawFunctions.iDrawCaps & caps) != caps)

    {

        return KErrNotSupported;

    }

    ASSERT(iDrawFunctions.iDrawLine);

    (*iDrawFunctions.iDrawLine)(aDstBitmap, aStart, aEnd, (*iColorMap.iForward)(aRGB), aStyle, aClipRect);

    return KErrNone;

}

/**

 * Draw outline of <CODE>aRect</CODE>

 */

TInt CLcdGraphicsDeviceImpl::DrawRect

(

    const TAcceleratedBitmapInfo* aDstBitmap,

    const TRect& aRect,

    TUint32      aRGB,

    TStrokeStyle aStyle,

    const TRect& aClipRect

)

{

    TInt caps = ECapDrawRect;

    if (aStyle == EStrokeDotted)

    {

        caps |= ECapStrokeDotted;

    }

    if ((iDrawFunctions.iDrawCaps & caps) != caps)

    {

        return KErrNotSupported;

    }

    ASSERT(iDrawFunctions.iDrawRect);

    (*iDrawFunctions.iDrawRect)(aDstBitmap, aRect, (*iColorMap.iForward)(aRGB), aStyle, aClipRect);

    return KErrNone;

}

/**

 * Fill interior of <CODE>aRect</CODE> with color <CODE>aRGB</CODE>

 */

TInt CLcdGraphicsDeviceImpl::FillRect

(

    const TAcceleratedBitmapInfo* aDstBitmap,

    const TRect& aRect,

    TUint32      aRGB,

    const TRect& aClipRect

)

{

    if (!(iDrawFunctions.iDrawCaps & ECapFillRect))

    {

        return KErrNotSupported;

    }

    ASSERT(iDrawFunctions.iFillRect);

    (*iDrawFunctions.iFillRect)(aDstBitmap, aRect, (*iColorMap.iForward)(aRGB), aClipRect);

    return KErrNone;

}

/**

 * Draw the arc of an ellipse bounded by aBoundingRect in device coordinates,

 * starting the arc at aStartAngle from the ellipse horizontal axis and

 * extending for aArcAngle degrees anticlockwise. Draw with color aRGB and

 * clip to aClipRect in device coords.

 */

TInt CLcdGraphicsDeviceImpl::DrawArc

(

    const TAcceleratedBitmapInfo* aDstBitmap,

    const TRect& aBoundingRect,

    const TInt aStartAngle,

    const TInt aArcAngle,

    TUint32 aRGB,

    TStrokeStyle aStyle,

    const TRect& aClipRect

)

{

    TInt caps = ECapDrawRect;

    if (aStyle == EStrokeDotted)

    {

        caps |= ECapStrokeDotted;

    }

    if ((iDrawFunctions.iDrawCaps & caps) != caps)

    {

        return KErrNotSupported;

    }

    ASSERT(iDrawFunctions.iDrawArc);

    (*iDrawFunctions.iDrawArc)(aDstBitmap, aBoundingRect, aStartAngle, aArcAngle, (*iColorMap.iForward)(aRGB), aStyle, aClipRect);

    return KErrNone;

}

/**

 * Fill the region bounded by an arc and the radii of its end points of an ellipse bounded

 * by aBoundingRect in device coordinates. The first radius lies at aStartAngle from the

 * ellipse horizontal axis and the second radies lies aArcAngle degrees anticlockwise

 * from the first. Fill with color aRGB and clip to aClipRect in device coords.

 */

TInt CLcdGraphicsDeviceImpl::FillArc

(

    const TAcceleratedBitmapInfo* aDstBitmap,

    const TRect& aBoundingRect,

    const TInt aStartAngle,

    const TInt aArcAngle,

    TUint32 aRGB,

    const TRect& aClipRect

)

{

    if (!(iDrawFunctions.iDrawCaps & ECapFillArc))

    {

        return KErrNotSupported;

    }

    ASSERT(iDrawFunctions.iFillArc);

    (*iDrawFunctions.iFillArc)(aDstBitmap, aBoundingRect, aStartAngle, aArcAngle, (*iColorMap.iForward)(aRGB), aClipRect);

    return KErrNone;

}

/**

 * Fill a triangle in device coordinates with color aRGB,

 * clipping to aClipRect in device coordinates.

 */

TInt CLcdGraphicsDeviceImpl::FillTriangle

(

    const TAcceleratedBitmapInfo* aDstBitmap,

    const TPoint aPoints[3],

    TUint32 aRGB,

    const TRect& aClipRect

)

{

    if (!(iDrawFunctions.iDrawCaps & ECapFillTriangle))

    {

        return KErrNotSupported;

    }

    ASSERT(iDrawFunctions.iFillTriangle);

    (*iDrawFunctions.iFillTriangle)(aDstBitmap, aPoints, (*iColorMap.iForward)(aRGB), aClipRect);

    return KErrNone;

}

TInt CLcdGraphicsDeviceImpl::DrawText

(

    const TAcceleratedBitmapInfo* /*aDstBitmap*/,

    const TDesC& /*aText*/,

    const TPoint& /*aPoint*/,

    const CFont* /*aFont*/,

    TUint32 /*aColor*/,

    const TRect& /*aClipRect*/

)

{

    return KErrNotSupported;

}

/**

 * This function is used, when image is drawn and rendering

 * target is framebuffer of CanavsGraphicsItem.

 */

TInt CLcdGraphicsDeviceImpl::DrawRegionForCanvasGraphicsItem

(

    const TAcceleratedBitmapInfo*               aDstBitmap,

    const TRect&                                aDstRect,

    const TAcceleratedBitmapInfo*               aSrcColorBitmap,

    const TAcceleratedBitmapInfo*             /*aSrcAlphaBitmap*/,

    TTransparency                             /*aSrcTransparency*/,

    const TRect&                                aSrcRect,

    TTransformType                              aSrcTransform,

    const TRect&                                aClipRect,

    const TCanvasGraphicsItemOperationsType&    aOperation

)

{

    TInt err = KErrNotSupported;

    // calc source to target transform

    TLcdTransform transform = CalcTransform(aDstRect, aSrcRect, aSrcTransform);

    TRect dstRect(aDstRect);

    TRect srcRect(aSrcRect);

    TRect srcClipRect(aSrcColorBitmap->iSize);

    TRect dstClipRect(aDstBitmap->iSize);

    // clip cliprect to device rect

    dstClipRect.Intersection(aClipRect);

    // calculate source and target rects clipped to src and target bounds.

    ClipTransformRect(dstRect, srcRect, dstClipRect, srcClipRect, transform);

    dstRect.Intersection(dstClipRect);

    if (!dstRect.IsEmpty())

    {

        // calc target to source transform.

        transform = transform.Inverse();

        ASSERT(CheckBounds(aDstBitmap->iSize, aSrcColorBitmap->iSize, dstRect, transform));

        ASSERT(aDstBitmap->iDisplayMode == EColor16MA);

        ASSERT(aSrcColorBitmap->iDisplayMode == EColor16MA);

        DoBlit(aDstBitmap, dstRect, aSrcColorBitmap, transform, aOperation);

    }

    err = KErrNone;

    return err;

}

// support for rendering image on CanavsGraphicsItem frame buffer

TInt CLcdGraphicsDeviceImpl::PixelPitch(const TAcceleratedBitmapInfo* aBitmap)

{

    switch (aBitmap->iDisplayMode)

    {

    case EColor64K:

    case EColor4K:

        return 2;

    case EColorARGB8888:

    case EColor16MU:

        return 4;

    case EGray256:

        return 1;

    }

    // Any other display mode is either invalid, or has a fractional number of

    // bytes per pixel, and cannot be handled by this routine.

    ASSERT(EFalse);

    return 0;   // Pacify the compiler

}

// support for rendering image on CanavsGraphicsItem frame buffer

void CLcdGraphicsDeviceImpl::DoBlit

(

    const TAcceleratedBitmapInfo*               aDstColorBitmap,

    const TRect&                                aDstRect,       // must be clipped to destination

    const TAcceleratedBitmapInfo*               aSrcColorBitmap,

    const TLcdTransform&                        aTransform,     // includes anchor

    const TCanvasGraphicsItemOperationsType&    aOperation

)

{

    ASSERT(aDstColorBitmap != NULL);

    ASSERT(aSrcColorBitmap != NULL);

    TPoint srcPoint = aTransform(aDstRect.iTl);

    TInt dudx = aTransform.iDuDx;

    TInt dudy = aTransform.iDuDy;

    TInt dvdx = aTransform.iDvDx;

    TInt dvdy = aTransform.iDvDy;

    //

    // For each bitmap, calculate the starting address and byte offsets to the

    // next address for one line down and one pixel right.

    //

    const TInt dstLinePitch = aDstColorBitmap->iLinePitch;

    const TInt dstPixelPitch = PixelPitch(aDstColorBitmap);

    TUint8* dstAddress = aDstColorBitmap->iAddress;

    dstAddress += aDstRect.iTl.iY * dstLinePitch + aDstRect.iTl.iX * dstPixelPitch;

    const TInt colorLinePitch = aSrcColorBitmap->iLinePitch;

    const TInt colorPixelPitch = PixelPitch(aSrcColorBitmap);

    TUint8* colorAddress = aSrcColorBitmap->iAddress;

    colorAddress += srcPoint.iY * colorLinePitch + srcPoint.iX * colorPixelPitch;

    // For the source bitmap, also calculate the pitch to the next address for

    // one line down and one pixel right in the destination bitmap.

    const TInt colorDstLinePitch = colorLinePitch * dvdy + colorPixelPitch * dudy;

    const TInt colorDstPixelPitch = colorLinePitch * dvdx + colorPixelPitch * dudx;

    //

    // Iterate over destination pixels.

    //

    const TInt width = aDstRect.Width();

    TInt h = aDstRect.Height();

    while (h-- > 0)

    {

        switch (aOperation)

        {

        case ECanvasGraphicsItemImageRendering:

            DoBlitLineForImage(dstAddress, width, colorAddress, colorDstPixelPitch);

            break;

        case ECanvasGraphicsItemRGBRendering:

            DoBlitLineForRgb(dstAddress, width, colorAddress, colorDstPixelPitch);

            break;

        }

        dstAddress += dstLinePitch;

        colorAddress += colorDstLinePitch;

    }

}

// support for rendering image on CanavsGraphicsItem frame buffer

void CLcdGraphicsDeviceImpl::DoBlitLineForImage

(

    TUint8* aDstAddress,

    TInt    aWidth,

    TUint8* aColorAddress,

    TInt    aColorPixelPitch

)

{

    TUint32* dst = (TUint32*)(aDstAddress);

    TUint32* end = dst + aWidth;

    TUint8* colorAddr = aColorAddress;

    while (dst < end)

    {

        TUint32 dstColor = *dst;

        TUint32 srcColor = *(TUint32*)colorAddr;

        TUint32 mask = (TUint32)(((TInt32)srcColor) >> 24); // Sign extend down.

        ASSERT(mask == 0 || mask == (TUint32)-1);

#ifdef RD_JAVA_NGA_ENABLED

        if (mask)

        {

            // Note that the target is not always opaque anymore

            dstColor = srcColor;

        }

#else // !RD_JAVA_NGA_ENABLED

        dstColor = (dstColor & ~mask) | (srcColor & mask);

#endif // RD_JAVA_NGA_ENABLED