os/graphics/graphicsdeviceinterface/directgdiadaptation/swsrc/swdirectgdidrawbmp.cpp
1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/graphics/graphicsdeviceinterface/directgdiadaptation/swsrc/swdirectgdidrawbmp.cpp Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,218 @@
1.4 +// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
1.5 +// All rights reserved.
1.6 +// This component and the accompanying materials are made available
1.7 +// under the terms of "Eclipse Public License v1.0"
1.8 +// which accompanies this distribution, and is available
1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
1.10 +//
1.11 +// Initial Contributors:
1.12 +// Nokia Corporation - initial contribution.
1.13 +//
1.14 +// Contributors:
1.15 +//
1.16 +// Description:
1.17 +//
1.18 +
1.19 +#include "swdirectgdiengine.h"
1.20 +#include "swdirectgdibitmap.h"
1.21 +#include "swdirectgdidriverimpl.h"
1.22 +#include <bmalphablend.h>
1.23 +#include <graphics/bitmap.inl>
1.24 +#include <graphics/gdi/gdiinline.inl>
1.25 +
1.26 +/**
1.27 +@see MDirectGdiEngine::DrawBitmap(cosnt TRect&, const CFbsBitmap&, const TRect&)
1.28 +@panic DGDIAdapter 7, if the bitmap is invalid (debug only).
1.29 +*/
1.30 +void CSwDirectGdiEngine::DrawBitmap(const TRect& aDestRect,
1.31 + const CFbsBitmap& aSource,
1.32 + const TRect& aSourceRect)
1.33 + {
1.34 + if (aSource.ExtendedBitmapType() != KNullUid)
1.35 + {
1.36 + iDriver->SetError(KErrNotSupported); // Not supported for extended bitmaps
1.37 + return;
1.38 + }
1.39 +
1.40 + TRect destRect(aDestRect);
1.41 + destRect.Move(iOrigin);
1.42 + TRect targetRect(destRect);
1.43 + const CSwDirectGdiBitmap& srce = static_cast<const CSwDirectGdiBitmap&>(aSource);
1.44 +
1.45 + CBitwiseBitmap* bmp = srce.Address();
1.46 + GRAPHICS_ASSERT_DEBUG(bmp,EDirectGdiPanicInvalidBitmap);
1.47 +
1.48 + const TInt limit = iDefaultRegionPtr->Count();
1.49 + const TBool opaqueSource = (!IsAlphaChannel(aSource.DisplayMode())) && (iDrawMode == DirectGdi::EDrawModePEN);
1.50 + if (opaqueSource)
1.51 + {
1.52 + iDrawMode = DirectGdi::EDrawModeWriteAlpha;
1.53 + }
1.54 +
1.55 + TRect clipRect(0,0,0,0);
1.56 + for (TInt count = 0; count < limit; count++)
1.57 + {
1.58 + clipRect = (*iDefaultRegionPtr)[count];
1.59 + if (!clipRect.Intersects(targetRect))
1.60 + {
1.61 + continue;
1.62 + }
1.63 +
1.64 + clipRect.Intersection(targetRect);
1.65 + DoDrawBitmap(destRect,bmp,aSource.DataAddress(),aSource.DataStride(),aSourceRect, clipRect);
1.66 +
1.67 + iDrawDevice->UpdateRegion(clipRect);
1.68 + }
1.69 + if (opaqueSource)
1.70 + {
1.71 + iDrawMode = DirectGdi::EDrawModePEN;
1.72 + }
1.73 + }
1.74 +
1.75 +/*
1.76 +Draws the bitmap. If aSrceRect equals aDestRect, a DoBitBlt() is performed instead.
1.77 +@panic DGDIAdapter 1013, if the clipping rectangle is dully outside the destination bounds (debug only).
1.78 +*/
1.79 +void CSwDirectGdiEngine::DoDrawBitmap(const TRect& aDestRect,
1.80 + CBitwiseBitmap* aBitmap,
1.81 + TUint32* aBase,
1.82 + TInt aStride,
1.83 + const TRect& aSrceRect,
1.84 + const TRect& aClipRect)
1.85 + {
1.86 +#ifdef _DEBUG
1.87 + TRect deviceDestRect;
1.88 + iDrawDevice->GetDrawRect(deviceDestRect);
1.89 + GRAPHICS_ASSERT_DEBUG(aClipRect.iTl.iX >= deviceDestRect.iTl.iX, EDirectGdiPanicOutOfBounds);
1.90 + GRAPHICS_ASSERT_DEBUG(aClipRect.iTl.iY >= deviceDestRect.iTl.iY, EDirectGdiPanicOutOfBounds);
1.91 + GRAPHICS_ASSERT_DEBUG(aClipRect.iBr.iX <= deviceDestRect.iBr.iX, EDirectGdiPanicOutOfBounds);
1.92 + GRAPHICS_ASSERT_DEBUG(aClipRect.iBr.iY <= deviceDestRect.iBr.iY, EDirectGdiPanicOutOfBounds);
1.93 +#endif
1.94 +
1.95 + if (aDestRect.Size() == aSrceRect.Size())
1.96 + {
1.97 + TRect clippedRect(aDestRect);
1.98 + clippedRect.Intersection(aClipRect);
1.99 +
1.100 + const TPoint destPoint(clippedRect.iTl);
1.101 + clippedRect.Move(aSrceRect.iTl - aDestRect.iTl);
1.102 + DoBitBlt(destPoint,aBitmap,aBase,aStride,clippedRect);
1.103 +
1.104 + return;
1.105 + }
1.106 +
1.107 + MFastBlend* fastBlend=NULL;
1.108 + if (FastBlendInterface(aBitmap,NULL,fastBlend)==KErrNone)
1.109 + {
1.110 + if (fastBlend->FastBlendBitmapScaled(aClipRect, aDestRect, aSrceRect, aBase, aStride, aBitmap->DisplayMode(), aBitmap->SizeInPixels(), GcDrawMode(iDrawMode), CFbsDrawDevice::ENoShadow)== KErrNone)
1.111 + {
1.112 + return;
1.113 + }
1.114 + }
1.115 +
1.116 + TUint32* scanLineBuffer = iDrawDevice->ScanLineBuffer();
1.117 + const TInt scanLineBytes = iDrawDevice->ScanLineBytes();
1.118 + TPtr8 scanLineDes(reinterpret_cast<TUint8*>(scanLineBuffer), scanLineBytes, scanLineBytes);
1.119 +
1.120 + // For EColor16MU targets, don't use EColor16MAP when draw mode is EDrawModeWriteAlpha.
1.121 + // Format conversion provides no performance gain and WriteLine expects EColor16MU
1.122 + // in this case.
1.123 + const TDisplayMode dispMode = iDrawDevice->DisplayMode() == EColor16MU && iDrawMode == DirectGdi::EDrawModeWriteAlpha ? EColor16MU : iDrawDevice->ScanLineDisplayMode();
1.124 +
1.125 + TLinearDDA xLine;
1.126 + TInt bitmapXStart = 0;
1.127 + xLine.Construct(TPoint(aSrceRect.iTl.iX,aDestRect.iTl.iX),
1.128 + TPoint(aSrceRect.iBr.iX,aDestRect.iBr.iX),TLinearDDA::ELeft);
1.129 + xLine.JumpToYCoord(bitmapXStart,aClipRect.iTl.iX);
1.130 +
1.131 + TLinearDDA yLine;
1.132 + TPoint yCoord(aSrceRect.iTl.iY,aDestRect.iTl.iY);
1.133 + yLine.Construct(yCoord,TPoint(aSrceRect.iBr.iY,aDestRect.iBr.iY),TLinearDDA::ELeft);
1.134 + TInt dummy;
1.135 + yLine.JumpToYCoord2(dummy,aClipRect.iTl.iY);
1.136 + yCoord.SetXY(dummy,aClipRect.iTl.iY);
1.137 +
1.138 + const TInt srceWidth = aSrceRect.Width();
1.139 + const TInt destWidth = aDestRect.Width();
1.140 + const TInt clipWidth = aClipRect.Width();
1.141 + const TInt clipStrch = aClipRect.iTl.iX - aDestRect.iTl.iX;
1.142 +
1.143 + TLineScanningPosition lineScanPos(aBase);
1.144 + TBool finished = EFalse;
1.145 + const TPoint KZeroPoint(0,0);
1.146 + const CGraphicsContext::TDrawMode drawMode = GcDrawMode(iDrawMode);
1.147 + while (yCoord.iY < aClipRect.iBr.iY && !finished)
1.148 + {
1.149 + aBitmap->StretchScanLine(scanLineDes,TPoint(bitmapXStart,yCoord.iX),
1.150 + clipStrch,clipWidth,destWidth,aSrceRect.iTl.iX,
1.151 + srceWidth,KZeroPoint,dispMode,aBase,lineScanPos);
1.152 + if (yCoord.iY == aClipRect.iTl.iY)
1.153 + {
1.154 + aBitmap->SetCompressionBookmark(lineScanPos, aBase,NULL);
1.155 + }
1.156 + iDrawDevice->WriteLine(aClipRect.iTl.iX,yCoord.iY,clipWidth, scanLineBuffer, drawMode);
1.157 + finished = yLine.NextStep(yCoord);
1.158 + }
1.159 + }
1.160 +
1.161 +/**
1.162 +@see MDirectGdiEngine::DrawMaskedBitmap(cosnt TRect&, const CFbsBitmap&, const TRect&, const CFbsBitmap&, TBool)
1.163 +@panic DGDIAdapter 7, if the source or mask bitmap is invalid (debug only).
1.164 +*/
1.165 +void CSwDirectGdiEngine::DrawBitmapMasked(const TRect& aDestRect,
1.166 + const CFbsBitmap& aBitmap,
1.167 + const TRect& aSourceRect,
1.168 + const CFbsBitmap& aMaskBitmap,
1.169 + TBool aInvertMask)
1.170 + {
1.171 + if ((aBitmap.ExtendedBitmapType() != KNullUid) || (aMaskBitmap.ExtendedBitmapType() != KNullUid))
1.172 + {
1.173 + iDriver->SetError(KErrNotSupported); // Not supported for extended bitmaps
1.174 + return;
1.175 + }
1.176 +
1.177 + aBitmap.BeginDataAccess();
1.178 + aMaskBitmap.BeginDataAccess();
1.179 +
1.180 + TRect destRect(aDestRect);
1.181 + destRect.Move(iOrigin);
1.182 + TRect targetRect(destRect);
1.183 + const TBool opaqueSource = (!IsAlphaChannel(aBitmap.DisplayMode())) && (iDrawMode == DirectGdi::EDrawModePEN);
1.184 +
1.185 + CBitwiseBitmap* srcebmp = ((CSwDirectGdiBitmap&)aBitmap).Address();
1.186 + CBitwiseBitmap* maskbmp = ((CSwDirectGdiBitmap&)aMaskBitmap).Address();
1.187 + GRAPHICS_ASSERT_DEBUG(srcebmp,EDirectGdiPanicInvalidBitmap);
1.188 + GRAPHICS_ASSERT_DEBUG(maskbmp,EDirectGdiPanicInvalidBitmap);
1.189 +
1.190 + const TInt limit = iDefaultRegionPtr->Count();
1.191 + if (opaqueSource)
1.192 + {
1.193 + iDrawMode = DirectGdi::EDrawModeWriteAlpha;
1.194 + }
1.195 + TRect clipRect(0,0,0,0);
1.196 + for (TInt count = 0; count < limit; count++)
1.197 + {
1.198 + clipRect = (*iDefaultRegionPtr)[count];
1.199 + if (!clipRect.Intersects(targetRect))
1.200 + {
1.201 + continue;
1.202 + }
1.203 + clipRect.Intersection(targetRect);
1.204 + DoDrawBitmapMasked(destRect,
1.205 + srcebmp,
1.206 + aBitmap.DataAddress(),
1.207 + aSourceRect,
1.208 + maskbmp,
1.209 + aMaskBitmap.DataAddress(),
1.210 + aInvertMask,
1.211 + clipRect);
1.212 + iDrawDevice->UpdateRegion(clipRect);
1.213 + }
1.214 + if (opaqueSource)
1.215 + {
1.216 + iDrawMode = DirectGdi::EDrawModePEN;
1.217 + }
1.218 +
1.219 + aBitmap.EndDataAccess(ETrue);
1.220 + aMaskBitmap.EndDataAccess(ETrue);
1.221 + }