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/*
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* Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: Graphics Extension Library source file
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*
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*/
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#include "GfxImageTransformer.h"
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#include "GfxColor.h"
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#define RGB565toRGB888(rgb565) (0xff000000|((rgb565 << 8) & 0xf80000) | ((rgb565 << 5) & 0x00fc00) | ((rgb565 << 3) & 0x000f8))
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// ---------------------------------------------------------------------------
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// Constructor
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// ---------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// TGfxImageTransformer::TGfxImageTransformer( TGfxAffineTransform* aTransform )
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// ---------------------------------------------------------------------------
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TGfxImageTransformer::TGfxImageTransformer( TGfxAffineTransform* aTransform, CVGRenderer * aRenderer )
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{
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iTransform = aTransform;
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iVgRenderer = aRenderer;
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}
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// --------------------------------------------------------------------------
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// void TGfxImageTransformer::ImageBlend( CFbsBitmap* aSrc,
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// ---------------------------------------------------------------------------
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void TGfxImageTransformer::ImageBlend( CFbsBitmap* aSrc,
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const TGfxPoint2D& aP,
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TInt aDstWidth,
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TInt aDstHeight,
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const TRect& aClipRect,
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TBool aReverse)
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{
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TRect srcrect( TPoint( aP.iX, aP.iY ), aSrc->SizeInPixels() );
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TRect dstrect( TPoint( 0, 0 ), TSize(aDstWidth, aDstHeight) );
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TInt srcWidth = aSrc->SizeInPixels().iWidth;
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TInt srcHeight = aSrc->SizeInPixels().iHeight;
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TGfxRectangle2D rect2d = GetTransformedBound( aSrc, aP );
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TRect rect (TPoint( rect2d.iX, rect2d.iY ), TSize( rect2d.iWidth, rect2d.iHeight ) );
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rect.Intersection(aClipRect); // Clipping
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if ( !rect.Intersects( dstrect ) ) // clip rect with dst image
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return;
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aSrc->LockHeap();
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rect.Intersection( dstrect );
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TUint32* bufsrc32 = (TUint32*) aSrc->DataAddress();
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TUint bufLimit = aDstWidth * aDstHeight;
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TGfxAffineTransform inv = iTransform->CreateInverse();
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TInt xstart, xend, yend;
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TGfxPoint2D horizDeriv;
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TGfxPoint2D origin, top, right, corner, east, west, south, north;
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// sort four corners into appropriate order
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SortCoordinates(origin, top, north, south, right, east, west,
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corner, aP, srcWidth, srcHeight);
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// compute derivitives for scanline in source.
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TPoint pinv;
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TGfxPoint2D p;
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p.iX = 8;
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p.iY = 0;
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inv.Transform( &p, & p, 1 );
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horizDeriv.iX = p.iX;
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horizDeriv.iY = p.iY;
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p.iX = 0;
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p.iY = 0;
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inv.Transform( &p, & p, 1 );
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horizDeriv.iX -= p.iX;
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horizDeriv.iY -= p.iY;
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horizDeriv.iX = horizDeriv.iX >> 3;
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horizDeriv.iY = horizDeriv.iY >> 3;
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yend = rect.iBr.iY;
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TInt bufLength = rect.iTl.iX + ( rect.iTl.iY * aDstWidth );
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TInt tempBufLength = bufLength;
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TInt x, y;
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TInt sx, sy;
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TUint32 pixel;
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TInt offset;
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VGint stride = CFbsBitmap::ScanLineLength( aDstWidth, aSrc->DisplayMode() );
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for ( y = rect.iTl.iY; y <= yend; y++ )
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{
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p.iY = y;
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// compute scanline starting position
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ComputeXPositions((TFloatFixPt)y, rect, north, west, east, south, xstart, xend);
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p.iX = xstart;
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// transform that starting position to the source image
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inv.Transform( &p, & p, 1 );
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bufLength += xstart - rect.iTl.iX;
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#ifdef SVG_FLOAT_BUILD
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p.iY -= TFloatFixPt( .5f );
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#else
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p.iY -= TFloatFixPt(0x8000, ETrue);
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#endif
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for ( x = xstart; x <= xend; x++ )
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{
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//increment the location of the position by one horizontal location
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pinv.iX = p.iX;
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pinv.iY = p.iY;
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if ( srcrect.Contains( pinv ) )
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{
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pinv.iX -= ( TInt32 ) aP.iX;
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pinv.iY -= ( TInt32 ) aP.iY;
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// find out cooresponding x & y in OpenVG
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offset = bufLength;
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sy = aDstHeight - (offset / aDstWidth);
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sx = offset % aDstWidth;
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if (aReverse)
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{
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iVgRenderer->vgReadPixels((void *)&pixel, stride, VG_sRGBA_8888_PRE, sx, sy, 1, 1);
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*(bufsrc32 + ( TInt32 ) pinv.iX + (srcWidth)*( TInt32 ) (pinv.iY)) =
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(pixel >> 8) | (pixel << 24) ;
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}
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else
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{
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pixel = *(bufsrc32 + ( TInt32 ) pinv.iX + (srcWidth)*( TInt32 ) (pinv.iY));
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pixel = (pixel << 8) | (pixel >> 24);
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iVgRenderer->vgWritePixels((void *)&pixel, stride, VG_sRGBA_8888_PRE, sx, sy, 1, 1);
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}
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}
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p.iX += horizDeriv.iX;
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p.iY += horizDeriv.iY;
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bufLength++;
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}
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tempBufLength += aDstWidth;
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bufLength = tempBufLength;
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if (tempBufLength + aDstWidth >= bufLimit)
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{
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aSrc->UnlockHeap();
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return;
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}
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}
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aSrc->UnlockHeap();
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}
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// --------------------------------------------------------------------------
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// void TGfxImageTransformer::SortCoordinates
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// ---------------------------------------------------------------------------
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void TGfxImageTransformer::SortCoordinates(
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TGfxPoint2D& origin, TGfxPoint2D& top,
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TGfxPoint2D& north, TGfxPoint2D& south, TGfxPoint2D& right,
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TGfxPoint2D& east, TGfxPoint2D& west, TGfxPoint2D& corner,
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const TGfxPoint2D aP, const TInt srcWidth, const TInt srcHeight)
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{
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origin.iX = aP.iX;
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origin.iY = aP.iY;
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corner.iX = aP.iX + (TFloatFixPt)srcWidth;
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corner.iY = aP.iY + (TFloatFixPt)srcHeight;
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top.iX = aP.iX;
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top.iY = aP.iY + (TFloatFixPt)srcHeight;
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right.iX = aP.iX + (TFloatFixPt)srcWidth;
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right.iY = aP.iY;
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// transform corners of the source rectangle.
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iTransform->Transform(&origin, &origin, 1);
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iTransform->Transform(&top, &top, 1);
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iTransform->Transform(&right, &right, 1);
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iTransform->Transform(&corner, &corner, 1);
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west = origin; east = corner; north = top; south = right;
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if (top.iX < origin.iX)
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{
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west = top;
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east = right;
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north = corner;
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south = origin;
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}
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else
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{
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west = origin;
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east = corner;
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north = top;
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south = right;
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}
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if (corner.iX < west.iX)
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{
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west = corner;
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east = origin;
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north = right;
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south = top;
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}
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if (right.iX < west.iX)
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{
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west = right;
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east = top;
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north = origin;
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south = corner;
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}
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}
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// --------------------------------------------------------------------------
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// void TGfxImageTransformer::ComputeXPositions
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// ---------------------------------------------------------------------------
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void TGfxImageTransformer::ComputeXPositions(TFloatFixPt y, TRect rect,
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TGfxPoint2D north, TGfxPoint2D west, TGfxPoint2D east,
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TGfxPoint2D south, TInt& xstart, TInt& xend)
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{
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if ( y > west.iY )
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{
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if (north.iY - west.iY == (TFloatFixPt)0)
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xstart = (TInt32) west.iX;
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else
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xstart = (TInt32) (west.iX + (north.iX - west.iX) *
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( (y - west.iY) / (north.iY - west.iY) ));
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}
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else
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{
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if (west.iY - south.iY == (TFloatFixPt)0)
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xstart = (TInt32) south.iX;
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else
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xstart = (TInt32) (south.iX + (west.iX - south.iX) *
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( (y - south.iY) / (west.iY - south.iY) ));
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}
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// compute scanline edges end position
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if ( y > east.iY )
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{
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if ( north.iY - east.iY == (TFloatFixPt)0 )
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xend = (TInt32) north.iX;
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else
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xend = (TInt32) (east.iX + (north.iX - east.iX) *
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( (((TFloatFixPt)y) - east.iY) / (north.iY - east.iY) ));
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}
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else
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{
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if ( (east.iY - south.iY) == (TFloatFixPt)0 )
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xend = (TInt32) east.iX;
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else
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xend = (TInt32) (south.iX + (east.iX - south.iX) *
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( (((TFloatFixPt)y) - south.iY) / (east.iY - south.iY) ));
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}
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// does span clip against edges
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if(xstart < rect.iTl.iX)
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xstart = rect.iTl.iX;
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if(xend >= rect.iBr.iX) // iX-1 seems to be the limit, using iX rolls over to next line
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xend = rect.iBr.iX-1;
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}
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// --------------------------------------------------------------------------
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// void TGfxImageTransformer::Draw( CFbsBitmap* aSrc,
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// ---------------------------------------------------------------------------
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void TGfxImageTransformer::Draw( CFbsBitmap* aSrc,
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const TGfxPoint2D& aP,
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TUint32* aDst,
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TInt aDstWidth,
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TInt aDstHeight,
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TUint8 /*aAlpha*/,
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TGfxColor aTransparentColor,
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const TRect& aClipRect,
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TBool aReverse
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)
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{
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TRect rect;
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TInt32 x, y;
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TFloatFixPt currentScale = iTransform->ScalingFactor();
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TSize bitmapSize = aSrc->SizeInPixels();
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TRect srcrect( TPoint( aP.iX, aP.iY ),
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TSize( bitmapSize.iWidth-1, bitmapSize.iHeight-1 ) );
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TRect dstrect( TPoint( 0, 0 ), TSize(aDstWidth-1, aDstHeight-1) );
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TInt32 srcWidth = bitmapSize.iWidth;
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TInt32 srcHeight = bitmapSize.iHeight;
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TInt32 pad = (srcWidth & 1);
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TGfxRectangle2D rect2d = GetTransformedBound( aSrc, aP );
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rect.SetRect( TPoint( rect2d.iX, rect2d.iY ), TSize( rect2d.iWidth, rect2d.iHeight ) );
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rect.Intersection(aClipRect); // Clipping
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if ( !rect.Intersects( dstrect ) ) // clip rect with dst image
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return;
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aSrc->LockHeap();
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rect.Intersection( dstrect );
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TDisplayMode dispmode = aSrc->DisplayMode();
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TUint16* bufsrc16 = NULL;
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TUint32* bufsrc32 = NULL;
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if ( dispmode == EColor16MU)
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{
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bufsrc32 = (TUint32*) aSrc->DataAddress();
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}
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else
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{
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bufsrc16 = (TUint16*) aSrc->DataAddress();
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}
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TUint32* buf = aDst + rect.iTl.iX + ( rect.iTl.iY * aDstWidth );
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TUint32* bufLimit = aDst + aDstWidth * aDstHeight;
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TUint32 pix = 0;
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TInt dstStride = aDstWidth;
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TGfxAffineTransform inv = iTransform->CreateInverse();
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if ( aTransparentColor.GetARGB() == KGfxColorNull /* && aAlpha == 0xff */ &&
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(int)inv.TransformType() == KTransformIdentity && aReverse == EFalse)
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{
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// Fast case; no alpha or transform (cdm).
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TPoint p;
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TInt lScrPp = (srcWidth+pad);
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for ( y = rect.iTl.iY; y <= rect.iBr.iY; y++ )
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{
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for ( x = rect.iTl.iX; x <= rect.iBr.iX; x++ )
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{
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p.iX = x;
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|
347 |
p.iY = y;
|
|
|
348 |
|
|
|
349 |
if ( srcrect.Contains( p ) )
|
|
|
350 |
{
|
|
|
351 |
p.iX -= ( TInt32 ) aP.iX;
|
|
|
352 |
p.iY -= ( TInt32 ) aP.iY;
|
|
|
353 |
if ( dispmode == EColor16MU)
|
|
|
354 |
{
|
|
|
355 |
buf[x] = (TUint32) *(bufsrc32 + ( TInt32 ) p.iX + (lScrPp)*( TInt32 ) p.iY);
|
|
|
356 |
*buf = pix;
|
|
|
357 |
}
|
|
|
358 |
else
|
|
|
359 |
{
|
|
|
360 |
// src:RGB565 -> dst:ARGB8888
|
|
|
361 |
pix = (TUint32) *(bufsrc16 + ( TInt32 ) p.iX + (lScrPp)*( TInt32 ) p.iY);
|
|
|
362 |
buf[x] = RGB565toRGB888(pix);
|
|
|
363 |
}
|
|
|
364 |
}
|
|
|
365 |
}
|
|
|
366 |
buf += dstStride;
|
|
|
367 |
if (buf + dstStride >= bufLimit)
|
|
|
368 |
{
|
|
|
369 |
aSrc->UnlockHeap();
|
|
|
370 |
return;
|
|
|
371 |
}
|
|
|
372 |
}
|
|
|
373 |
}
|
|
|
374 |
else // Alpha blending and/or transform is required.
|
|
|
375 |
{
|
|
|
376 |
TPoint pinv;
|
|
|
377 |
TGfxPoint2D p;
|
|
|
378 |
|
|
|
379 |
TUint32* obuf = buf;
|
|
|
380 |
TInt32 xstart, xend, yend;
|
|
|
381 |
TGfxPoint2D horizDeriv;
|
|
|
382 |
TGfxPoint2D origin, top, right, corner;
|
|
|
383 |
TGfxPoint2D east, west, south, north;
|
|
|
384 |
|
|
|
385 |
origin.iX = aP.iX;
|
|
|
386 |
origin.iY = aP.iY;
|
|
|
387 |
corner.iX = aP.iX + (TFloatFixPt)srcWidth;
|
|
|
388 |
corner.iY = aP.iY + (TFloatFixPt)srcHeight;
|
|
|
389 |
top.iX = aP.iX;
|
|
|
390 |
top.iY = aP.iY + (TFloatFixPt)srcHeight;
|
|
|
391 |
right.iX = aP.iX + (TFloatFixPt)srcWidth;
|
|
|
392 |
right.iY = aP.iY;
|
|
|
393 |
|
|
|
394 |
// transform corners of the source rectangle.
|
|
|
395 |
iTransform->Transform(&origin, &origin, 1);
|
|
|
396 |
iTransform->Transform(&top, &top, 1);
|
|
|
397 |
iTransform->Transform(&right, &right, 1);
|
|
|
398 |
iTransform->Transform(&corner, &corner, 1);
|
|
|
399 |
|
|
|
400 |
// sort four corners into appropriate order
|
|
|
401 |
west = origin; east = corner; north = top; south = right;
|
|
|
402 |
if (top.iX < origin.iX)
|
|
|
403 |
{
|
|
|
404 |
west = top;
|
|
|
405 |
east = right;
|
|
|
406 |
north = corner;
|
|
|
407 |
south = origin;
|
|
|
408 |
}
|
|
|
409 |
else
|
|
|
410 |
{
|
|
|
411 |
west = origin;
|
|
|
412 |
east = corner;
|
|
|
413 |
north = top;
|
|
|
414 |
south = right;
|
|
|
415 |
}
|
|
|
416 |
|
|
|
417 |
if (corner.iX < west.iX)
|
|
|
418 |
{
|
|
|
419 |
west = corner;
|
|
|
420 |
east = origin;
|
|
|
421 |
north = right;
|
|
|
422 |
south = top;
|
|
|
423 |
}
|
|
|
424 |
|
|
|
425 |
if (right.iX < west.iX)
|
|
|
426 |
{
|
|
|
427 |
west = right;
|
|
|
428 |
east = top;
|
|
|
429 |
north = origin;
|
|
|
430 |
south = corner;
|
|
|
431 |
}
|
|
|
432 |
|
|
|
433 |
// compute derivitives for scanline in source.
|
|
|
434 |
p.iX = 1;
|
|
|
435 |
p.iY = 0;
|
|
|
436 |
inv.Transform( &p, & p, 1 );
|
|
|
437 |
horizDeriv.iX = p.iX;
|
|
|
438 |
horizDeriv.iY = p.iY;
|
|
|
439 |
p.iX = 0;
|
|
|
440 |
p.iY = 0;
|
|
|
441 |
inv.Transform( &p, & p, 1 );
|
|
|
442 |
horizDeriv.iX -= p.iX;
|
|
|
443 |
horizDeriv.iY -= p.iY;
|
|
|
444 |
|
|
|
445 |
yend = rect.iBr.iY;
|
|
|
446 |
TInt lScrPp = 0;
|
|
|
447 |
if ( dispmode == EColor16MU)
|
|
|
448 |
{
|
|
|
449 |
lScrPp = srcWidth;
|
|
|
450 |
}
|
|
|
451 |
else
|
|
|
452 |
{
|
|
|
453 |
lScrPp = srcWidth+pad;
|
|
|
454 |
}
|
|
|
455 |
|
|
|
456 |
TUint32 transparentColorRgb565 = aTransparentColor.ColorRgb565();
|
|
|
457 |
|
|
|
458 |
for ( y = rect.iTl.iY; y <= yend; y++ )
|
|
|
459 |
{
|
|
|
460 |
p.iY = y;
|
|
|
461 |
|
|
|
462 |
// compute scanline starting position
|
|
|
463 |
|
|
|
464 |
if ( ((TFloatFixPt)y) > west.iY )
|
|
|
465 |
{
|
|
|
466 |
if(north.iY - west.iY == (TFloatFixPt)0)
|
|
|
467 |
xstart = (TInt32) west.iX;
|
|
|
468 |
else
|
|
|
469 |
xstart = (TInt32) (west.iX + (north.iX - west.iX) * ( (((TFloatFixPt)y) - west.iY) / (north.iY - west.iY) ));
|
|
|
470 |
}
|
|
|
471 |
else
|
|
|
472 |
{
|
|
|
473 |
if(west.iY - south.iY == (TFloatFixPt)0)
|
|
|
474 |
xstart = (TInt32) south.iX;
|
|
|
475 |
else
|
|
|
476 |
xstart = (TInt32) (south.iX + (west.iX - south.iX) * ( (((TFloatFixPt)y) - south.iY) / (west.iY - south.iY) ));
|
|
|
477 |
}
|
|
|
478 |
|
|
|
479 |
// compute scanline edges end position
|
|
|
480 |
if ( (TFloatFixPt)y > east.iY )
|
|
|
481 |
{
|
|
|
482 |
if(north.iY - east.iY == (TFloatFixPt)0)
|
|
|
483 |
xend = (TInt32) north.iX;
|
|
|
484 |
else
|
|
|
485 |
xend = (TInt32) (east.iX + (north.iX - east.iX) * ( (((TFloatFixPt)y) - east.iY) / (north.iY - east.iY) ));
|
|
|
486 |
}
|
|
|
487 |
else
|
|
|
488 |
{
|
|
|
489 |
if ( (east.iY - south.iY) == (TFloatFixPt)0 )
|
|
|
490 |
xend = (TInt32) east.iX;
|
|
|
491 |
else
|
|
|
492 |
xend = (TInt32) (south.iX + (east.iX - south.iX) * ( (((TFloatFixPt)y) - south.iY) / (east.iY - south.iY) ));
|
|
|
493 |
}
|
|
|
494 |
|
|
|
495 |
// does span clip against edges
|
|
|
496 |
if(xstart < rect.iTl.iX)
|
|
|
497 |
xstart = rect.iTl.iX;
|
|
|
498 |
|
|
|
499 |
if(xend >= rect.iBr.iX) // iX-1 seems to be the limit, using iX rolls over to next line
|
|
|
500 |
xend = rect.iBr.iX-1;
|
|
|
501 |
|
|
|
502 |
p.iX = xstart;
|
|
|
503 |
// transform that starting position to the source image
|
|
|
504 |
inv.Transform( &p, & p, 1 );
|
|
|
505 |
buf += xstart-rect.iTl.iX;
|
|
|
506 |
|
|
|
507 |
p.iY -= TFloatFixPt(.5f) * currentScale;
|
|
|
508 |
|
|
|
509 |
if (aTransparentColor.GetARGB() == KGfxColorNull)
|
|
|
510 |
{
|
|
|
511 |
for ( x = xstart; x <= xend; x++ )
|
|
|
512 |
{
|
|
|
513 |
//increment the location of the position by one horizontal location
|
|
|
514 |
pinv.iX = p.iX;
|
|
|
515 |
pinv.iY = p.iY;
|
|
|
516 |
if ( srcrect.Contains( pinv ) )
|
|
|
517 |
{
|
|
|
518 |
pinv.iX -= ( TInt32 ) aP.iX;
|
|
|
519 |
pinv.iY -= ( TInt32 ) aP.iY;
|
|
|
520 |
if ( dispmode == EColor16MU )
|
|
|
521 |
{
|
|
|
522 |
*buf = (TUint32)*(bufsrc32 + ( TInt32 ) pinv.iX + (lScrPp)*( TInt32 ) (pinv.iY));
|
|
|
523 |
}
|
|
|
524 |
else
|
|
|
525 |
{
|
|
|
526 |
// src:RGB565 -> dst:ARGB8888
|
|
|
527 |
pix = (TUint32)*(bufsrc16 + ( TInt32 ) pinv.iX + (lScrPp)*( TInt32 ) (pinv.iY));
|
|
|
528 |
*buf = RGB565toRGB888(pix);
|
|
|
529 |
}
|
|
|
530 |
}
|
|
|
531 |
p.iX += horizDeriv.iX;
|
|
|
532 |
p.iY += horizDeriv.iY;
|
|
|
533 |
buf++;
|
|
|
534 |
}
|
|
|
535 |
}
|
|
|
536 |
else
|
|
|
537 |
{
|
|
|
538 |
for ( x = xstart; x <= xend; x++ )
|
|
|
539 |
{
|
|
|
540 |
//increment the location of the position by one horizontal location
|
|
|
541 |
pinv.iX = p.iX;
|
|
|
542 |
pinv.iY = p.iY;
|
|
|
543 |
|
|
|
544 |
if ( srcrect.Contains( pinv ) )
|
|
|
545 |
{
|
|
|
546 |
pinv.iX -= ( TInt32 ) aP.iX;
|
|
|
547 |
pinv.iY -= ( TInt32 ) aP.iY;
|
|
|
548 |
|
|
|
549 |
if ( aReverse ) // copy source to destination. Used for Text blending with final framebufer.
|
|
|
550 |
{ // this used for text only
|
|
|
551 |
if ( dispmode == EColor16MU )
|
|
|
552 |
{
|
|
|
553 |
*(bufsrc32 + ( TInt32 ) pinv.iX + (lScrPp)*( TInt32 ) (pinv.iY)) = *buf ;
|
|
|
554 |
}
|
|
|
555 |
else
|
|
|
556 |
{
|
|
|
557 |
*(bufsrc16 + ( TInt32 ) pinv.iX + (lScrPp)*( TInt32 ) (pinv.iY)) = *buf ;
|
|
|
558 |
}
|
|
|
559 |
}
|
|
|
560 |
else
|
|
|
561 |
{
|
|
|
562 |
if ( dispmode == EColor16MU )
|
|
|
563 |
{
|
|
|
564 |
pix = (TUint32)*(bufsrc32 + ( TInt32 ) pinv.iX + (lScrPp)*( TInt32 ) (pinv.iY));
|
|
|
565 |
if (pix != transparentColorRgb565)
|
|
|
566 |
{
|
|
|
567 |
*buf = pix;
|
|
|
568 |
}
|
|
|
569 |
}
|
|
|
570 |
else
|
|
|
571 |
{
|
|
|
572 |
pix = (TUint32) *(bufsrc16 + ( TInt32 ) pinv.iX + (lScrPp)*( TInt32 ) (pinv.iY));
|
|
|
573 |
if (pix != transparentColorRgb565)
|
|
|
574 |
{
|
|
|
575 |
*buf = RGB565toRGB888(pix);
|
|
|
576 |
}
|
|
|
577 |
}
|
|
|
578 |
}
|
|
|
579 |
}
|
|
|
580 |
p.iX += horizDeriv.iX;
|
|
|
581 |
p.iY += horizDeriv.iY;
|
|
|
582 |
buf++;
|
|
|
583 |
}
|
|
|
584 |
}
|
|
|
585 |
buf = obuf+aDstWidth;
|
|
|
586 |
obuf += aDstWidth;
|
|
|
587 |
if (obuf + aDstWidth >= bufLimit)
|
|
|
588 |
{
|
|
|
589 |
aSrc->UnlockHeap();
|
|
|
590 |
return;
|
|
|
591 |
}
|
|
|
592 |
}
|
|
|
593 |
}
|
|
|
594 |
|
|
|
595 |
aSrc->UnlockHeap();
|
|
|
596 |
}
|
|
|
597 |
|
|
|
598 |
// --------------------------------------------------------------------------
|
|
|
599 |
// void TGfxImageTransformer::Draw( CFbsBitmap* aSrc,
|
|
|
600 |
// ---------------------------------------------------------------------------
|
|
|
601 |
void TGfxImageTransformer::Draw( CFbsBitmap* aSrc,
|
|
|
602 |
const TGfxPoint2D& aP,
|
|
|
603 |
TUint32* aDst,
|
|
|
604 |
TInt aDstWidth,
|
|
|
605 |
TInt aDstHeight,
|
|
|
606 |
const TRect& aClipRect
|
|
|
607 |
)
|
|
|
608 |
{
|
|
|
609 |
TDisplayMode dispmode = aSrc->DisplayMode();
|
|
|
610 |
if ( dispmode != EColor16MU )
|
|
|
611 |
{
|
|
|
612 |
return;
|
|
|
613 |
}
|
|
|
614 |
|
|
|
615 |
TRect rect;
|
|
|
616 |
TInt32 x, y;
|
|
|
617 |
|
|
|
618 |
TFloatFixPt currentScale = iTransform->ScalingFactor();
|
|
|
619 |
|
|
|
620 |
TRect srcrect( TPoint( aP.iX, aP.iY ), aSrc->SizeInPixels() );
|
|
|
621 |
TRect dstrect( TPoint( 0, 0 ), TSize(aDstWidth, aDstHeight) );
|
|
|
622 |
TInt32 srcWidth = aSrc->SizeInPixels().iWidth;
|
|
|
623 |
TInt32 srcHeight = aSrc->SizeInPixels().iHeight;
|
|
|
624 |
|
|
|
625 |
TGfxRectangle2D rect2d = GetTransformedBound( aSrc, aP );
|
|
|
626 |
rect.SetRect( TPoint( rect2d.iX, rect2d.iY ), TSize( rect2d.iWidth, rect2d.iHeight ) );
|
|
|
627 |
rect.Intersection(aClipRect); // Clipping
|
|
|
628 |
|
|
|
629 |
if ( !rect.Intersects( dstrect ) ) // clip rect with dst image
|
|
|
630 |
return;
|
|
|
631 |
|
|
|
632 |
aSrc->LockHeap();
|
|
|
633 |
rect.Intersection( dstrect );
|
|
|
634 |
|
|
|
635 |
TUint32* bufsrc32 = (TUint32*) aSrc->DataAddress();
|
|
|
636 |
|
|
|
637 |
TUint32* buf = aDst + rect.iTl.iX + ( rect.iTl.iY * aDstWidth );
|
|
|
638 |
TUint32* bufLimit = aDst + aDstWidth * aDstHeight;
|
|
|
639 |
TUint32 pix = 0;
|
|
|
640 |
|
|
|
641 |
TGfxAffineTransform inv = iTransform->CreateInverse();
|
|
|
642 |
|
|
|
643 |
{
|
|
|
644 |
TPoint pinv;
|
|
|
645 |
TGfxPoint2D p;
|
|
|
646 |
|
|
|
647 |
TUint32* obuf = buf;
|
|
|
648 |
TInt32 xstart, xend, yend;
|
|
|
649 |
TGfxPoint2D horizDeriv;
|
|
|
650 |
TGfxPoint2D origin, top, right, corner;
|
|
|
651 |
TGfxPoint2D east, west, south, north;
|
|
|
652 |
|
|
|
653 |
origin.iX = aP.iX;
|
|
|
654 |
origin.iY = aP.iY;
|
|
|
655 |
corner.iX = aP.iX + (TFloatFixPt)srcWidth;
|
|
|
656 |
corner.iY = aP.iY + (TFloatFixPt)srcHeight;
|
|
|
657 |
top.iX = aP.iX;
|
|
|
658 |
top.iY = aP.iY + (TFloatFixPt)srcHeight;
|
|
|
659 |
right.iX = aP.iX + (TFloatFixPt)srcWidth;
|
|
|
660 |
right.iY = aP.iY;
|
|
|
661 |
|
|
|
662 |
// transform corners of the source rectangle.
|
|
|
663 |
iTransform->Transform(&origin, &origin, 1);
|
|
|
664 |
iTransform->Transform(&top, &top, 1);
|
|
|
665 |
iTransform->Transform(&right, &right, 1);
|
|
|
666 |
iTransform->Transform(&corner, &corner, 1);
|
|
|
667 |
|
|
|
668 |
// sort four corners into appropriate order
|
|
|
669 |
west = origin; east = corner; north = top; south = right;
|
|
|
670 |
if (top.iX < origin.iX)
|
|
|
671 |
{
|
|
|
672 |
west = top;
|
|
|
673 |
east = right;
|
|
|
674 |
north = corner;
|
|
|
675 |
south = origin;
|
|
|
676 |
}
|
|
|
677 |
else
|
|
|
678 |
{
|
|
|
679 |
west = origin;
|
|
|
680 |
east = corner;
|
|
|
681 |
north = top;
|
|
|
682 |
south = right;
|
|
|
683 |
}
|
|
|
684 |
|
|
|
685 |
if (corner.iX < west.iX)
|
|
|
686 |
{
|
|
|
687 |
west = corner;
|
|
|
688 |
east = origin;
|
|
|
689 |
north = right;
|
|
|
690 |
south = top;
|
|
|
691 |
}
|
|
|
692 |
|
|
|
693 |
if (right.iX < west.iX)
|
|
|
694 |
{
|
|
|
695 |
west = right;
|
|
|
696 |
east = top;
|
|
|
697 |
north = origin;
|
|
|
698 |
south = corner;
|
|
|
699 |
}
|
|
|
700 |
|
|
|
701 |
// compute derivitives for scanline in source.
|
|
|
702 |
p.iX = 8;
|
|
|
703 |
p.iY = 0;
|
|
|
704 |
inv.Transform( &p, & p, 1 );
|
|
|
705 |
horizDeriv.iX = p.iX;
|
|
|
706 |
horizDeriv.iY = p.iY;
|
|
|
707 |
p.iX = 0;
|
|
|
708 |
p.iY = 0;
|
|
|
709 |
inv.Transform( &p, & p, 1 );
|
|
|
710 |
horizDeriv.iX -= p.iX;
|
|
|
711 |
horizDeriv.iY -= p.iY;
|
|
|
712 |
horizDeriv.iX = horizDeriv.iX >> 3;
|
|
|
713 |
horizDeriv.iY = horizDeriv.iY >> 3;
|
|
|
714 |
|
|
|
715 |
yend = rect.iBr.iY;
|
|
|
716 |
TInt lScrPp = 0;
|
|
|
717 |
lScrPp = srcWidth;
|
|
|
718 |
|
|
|
719 |
|
|
|
720 |
for ( y = rect.iTl.iY; y <= yend; y++ )
|
|
|
721 |
{
|
|
|
722 |
p.iY = y;
|
|
|
723 |
|
|
|
724 |
// compute scanline starting position
|
|
|
725 |
|
|
|
726 |
if ( ((TFloatFixPt)y) > west.iY )
|
|
|
727 |
{
|
|
|
728 |
if(north.iY - west.iY == (TFloatFixPt)0)
|
|
|
729 |
xstart = (TInt32) west.iX;
|
|
|
730 |
else
|
|
|
731 |
xstart = (TInt32) (west.iX + (north.iX - west.iX) * ( (((TFloatFixPt)y) - west.iY) / (north.iY - west.iY) ));
|
|
|
732 |
}
|
|
|
733 |
else
|
|
|
734 |
{
|
|
|
735 |
if(west.iY - south.iY == (TFloatFixPt)0)
|
|
|
736 |
xstart = (TInt32) south.iX;
|
|
|
737 |
else
|
|
|
738 |
xstart = (TInt32) (south.iX + (west.iX - south.iX) * ( (((TFloatFixPt)y) - south.iY) / (west.iY - south.iY) ));
|
|
|
739 |
}
|
|
|
740 |
|
|
|
741 |
// compute scanline edges end position
|
|
|
742 |
if ( (TFloatFixPt)y > east.iY )
|
|
|
743 |
{
|
|
|
744 |
if(north.iY - east.iY == (TFloatFixPt)0)
|
|
|
745 |
xend = (TInt32) north.iX;
|
|
|
746 |
else
|
|
|
747 |
xend = (TInt32) (east.iX + (north.iX - east.iX) * ( (((TFloatFixPt)y) - east.iY) / (north.iY - east.iY) ));
|
|
|
748 |
}
|
|
|
749 |
else
|
|
|
750 |
{
|
|
|
751 |
if ( (east.iY - south.iY) == (TFloatFixPt)0 )
|
|
|
752 |
xend = (TInt32) east.iX;
|
|
|
753 |
else
|
|
|
754 |
xend = (TInt32) (south.iX + (east.iX - south.iX) * ( (((TFloatFixPt)y) - south.iY) / (east.iY - south.iY) ));
|
|
|
755 |
}
|
|
|
756 |
|
|
|
757 |
// does span clip against edges
|
|
|
758 |
if(xstart < rect.iTl.iX)
|
|
|
759 |
xstart = rect.iTl.iX;
|
|
|
760 |
|
|
|
761 |
if(xend >= rect.iBr.iX) // iX-1 seems to be the limit, using iX rolls over to next line
|
|
|
762 |
xend = rect.iBr.iX-1;
|
|
|
763 |
|
|
|
764 |
p.iX = xstart;
|
|
|
765 |
// transform that starting position to the source image
|
|
|
766 |
inv.Transform( &p, & p, 1 );
|
|
|
767 |
buf += xstart-rect.iTl.iX;
|
|
|
768 |
// Change here
|
|
|
769 |
p.iY -= TFloatFixPt(0.5f) * currentScale;
|
|
|
770 |
|
|
|
771 |
{
|
|
|
772 |
for ( x = xstart; x <= xend; x++ )
|
|
|
773 |
{
|
|
|
774 |
//increment the location of the position by one horizontal location
|
|
|
775 |
pinv.iX = p.iX;
|
|
|
776 |
pinv.iY = p.iY;
|
|
|
777 |
if ( srcrect.Contains( pinv ) )
|
|
|
778 |
{
|
|
|
779 |
pinv.iX -= ( TInt32 ) aP.iX;
|
|
|
780 |
pinv.iY -= ( TInt32 ) aP.iY;
|
|
|
781 |
|
|
|
782 |
pix = (TUint32)*(bufsrc32 + ( TInt32 ) pinv.iX + (lScrPp)*( TInt32 ) (pinv.iY));
|
|
|
783 |
TUint srcAlpha = ( pix & 0xFF000000 ) >> 24;
|
|
|
784 |
if ( srcAlpha == 0xFF )
|
|
|
785 |
{
|
|
|
786 |
*buf = pix;
|
|
|
787 |
}
|
|
|
788 |
else if ( srcAlpha > 0 )
|
|
|
789 |
{
|
|
|
790 |
TUint destPix = *buf;
|
|
|
791 |
TUint destAlpha = ( destPix & 0xFF000000 ) >> 24;
|
|
|
792 |
// Blending needed: blend with background as opaque
|
|
|
793 |
if ( destAlpha == 0xFF )
|
|
|
794 |
{
|
|
|
795 |
TReal32 alpha = 0.0039215686 * srcAlpha; // 0.0039.. = 1/255
|
|
|
796 |
TReal32 inverseAlpha = 1.0f - alpha;
|
|
|
797 |
*buf = ((((TUint)((pix >> 16 & 0xff) * alpha) +
|
|
|
798 |
(TUint)((destPix >> 16 & 0xff) * inverseAlpha))) << 16) | // red
|
|
|
799 |
((((TUint)((pix >> 8 & 0xff) * alpha) +
|
|
|
800 |
(TUint)((destPix >> 8 & 0xff) * inverseAlpha))) << 8 ) | // green
|
|
|
801 |
((((TUint)((pix & 0xff) * alpha) +
|
|
|
802 |
(TUint)((destPix & 0xff) * inverseAlpha))) ) | // blue
|
|
|
803 |
(0xFF000000); // full alpha (already blended)
|
|
|
804 |
}
|
|
|
805 |
// Apply alpha to each color channel of source only
|
|
|
806 |
// Important: use original alpha
|
|
|
807 |
else
|
|
|
808 |
{
|
|
|
809 |
TReal32 alpha = 0.0039215686 * srcAlpha;
|
|
|
810 |
*buf = (srcAlpha << 24)|
|
|
|
811 |
((TUint)((pix >> 16 & 0xff) * alpha) << 16) |
|
|
|
812 |
((TUint)((pix >> 8 & 0xff) * alpha) << 8) |
|
|
|
813 |
((TUint)((pix & 0xff) * alpha));
|
|
|
814 |
}
|
|
|
815 |
}
|
|
|
816 |
}
|
|
|
817 |
p.iX += horizDeriv.iX;
|
|
|
818 |
p.iY += horizDeriv.iY;
|
|
|
819 |
buf++;
|
|
|
820 |
}
|
|
|
821 |
}
|
|
|
822 |
|
|
|
823 |
buf = obuf+aDstWidth;
|
|
|
824 |
obuf += aDstWidth;
|
|
|
825 |
if (obuf + aDstWidth >= bufLimit)
|
|
|
826 |
{
|
|
|
827 |
aSrc->UnlockHeap();
|
|
|
828 |
return;
|
|
|
829 |
}
|
|
|
830 |
}
|
|
|
831 |
}
|
|
|
832 |
|
|
|
833 |
aSrc->UnlockHeap();
|
|
|
834 |
}
|
|
|
835 |
|
|
|
836 |
// TGfxRectangle2D TGfxImageTransformer::GetTransformedBound( CFbsBitmap* aSrc,
|
|
|
837 |
// ---------------------------------------------------------------------------
|
|
|
838 |
TGfxRectangle2D TGfxImageTransformer::GetTransformedBound( CFbsBitmap* aSrc,
|
|
|
839 |
const TGfxPoint2D& aOffset )
|
|
|
840 |
{
|
|
|
841 |
TGfxRectangle2D rect;
|
|
|
842 |
TGfxPoint2D rectp[4];
|
|
|
843 |
|
|
|
844 |
rectp[0].iX = aOffset.iX;
|
|
|
845 |
rectp[0].iY = aOffset.iY;
|
|
|
846 |
rectp[1].iX = aOffset.iX + ( TFloatFixPt ) aSrc->SizeInPixels().iWidth;
|
|
|
847 |
rectp[1].iY = aOffset.iY;
|
|
|
848 |
rectp[2].iX = aOffset.iX + ( TFloatFixPt ) aSrc->SizeInPixels().iWidth;
|
|
|
849 |
rectp[2].iY = aOffset.iY + ( TFloatFixPt ) aSrc->SizeInPixels().iHeight;
|
|
|
850 |
rectp[3].iX = aOffset.iX;
|
|
|
851 |
rectp[3].iY = aOffset.iY + ( TFloatFixPt ) aSrc->SizeInPixels().iHeight;
|
|
|
852 |
iTransform->Transform( rectp, rectp, 4 );
|
|
|
853 |
|
|
|
854 |
TInt32 i;
|
|
|
855 |
//MinX
|
|
|
856 |
rect.iX = rectp[0].iX;
|
|
|
857 |
rect.iY = rectp[0].iY;
|
|
|
858 |
rect.iWidth = rectp[0].iX;
|
|
|
859 |
rect.iHeight = rectp[0].iY;
|
|
|
860 |
|
|
|
861 |
for ( i = 1; i < 4; i++ )
|
|
|
862 |
{
|
|
|
863 |
if ( rectp[i].iX < rect.iX )
|
|
|
864 |
rect.iX = rectp[i].iX;
|
|
|
865 |
//MinY
|
|
|
866 |
if ( rectp[i].iY < rect.iY )
|
|
|
867 |
rect.iY = rectp[i].iY;
|
|
|
868 |
//MaxX -> width
|
|
|
869 |
if ( rectp[i].iX > rect.iWidth )
|
|
|
870 |
rect.iWidth = rectp[i].iX;
|
|
|
871 |
//MaxY -> height
|
|
|
872 |
if ( rectp[i].iY > rect.iHeight )
|
|
|
873 |
rect.iHeight = rectp[i].iY;
|
|
|
874 |
}
|
|
|
875 |
rect.iWidth -= rect.iX;
|
|
|
876 |
rect.iHeight -= rect.iY;
|
|
|
877 |
|
|
|
878 |
return rect;
|
|
|
879 |
}
|
|
|
880 |
|