sl@0: // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #include "directgdiadapter.h"
sl@0: #include "swdirectgdiengine.h"
sl@0: #include "swdirectgdiellipse.h"
sl@0: 
sl@0: /** 
sl@0: @see MDirectGdiEngine::Clear(const TRect&)
sl@0: */	
sl@0: void CSwDirectGdiEngine::Clear(const TRect& aRect)
sl@0: 	{
sl@0: 	TRect rcpy(aRect);
sl@0: 	rcpy.Move(iOrigin);	
sl@0: 
sl@0: 	DirectGdi::TBrushStyle tempbrushstyle = iBrushStyle;
sl@0: 	iBrushStyle = DirectGdi::ESolidBrush;
sl@0: 
sl@0: 	RectFill(rcpy);	
sl@0: 	
sl@0: 	iBrushStyle = tempbrushstyle;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: @see MDirectGdiEngine::Clear()
sl@0: */
sl@0: void CSwDirectGdiEngine::Clear()
sl@0: 	{
sl@0: 	TRect deviceRect;
sl@0: 	iDrawDevice->GetDrawRect(deviceRect);
sl@0: 	if ((iOrigin.iX!=0) || (iOrigin.iY!=0))
sl@0: 		{
sl@0: 		deviceRect.Move(-iOrigin);
sl@0: 		}
sl@0: 	Clear(deviceRect);
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: @see MDirectGdiEngine::Plot()
sl@0: */
sl@0: void CSwDirectGdiEngine::Plot(const TPoint& aPoint)
sl@0: 	{
sl@0: 	TRect targetRect(aPoint + iOrigin, TSize(1,1));
sl@0: 	targetRect.Grow((iPenSize.iWidth >> 1) + 1,(iPenSize.iHeight >> 1) + 1);
sl@0: 	DoPlot(aPoint);	
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Draws a single point.
sl@0: 
sl@0: @see Plot()
sl@0: 
sl@0: @param aPoint The location to plot at.
sl@0: @panic DGDIAdapter 1013, if the point being plotted is out of bounds of the target (debug only).
sl@0:  */
sl@0: void CSwDirectGdiEngine::DoPlot(const TPoint& aPoint)
sl@0: 	{
sl@0: 	const TSize oneByOne(1,1);
sl@0: 	const TPoint point(aPoint + iOrigin);
sl@0: 
sl@0: 	TRect temp(point,oneByOne);
sl@0: 	if (iPenSize.iWidth > 1 || iPenSize.iHeight > 1)
sl@0: 		{
sl@0: 		temp.Grow(iPenSize.iWidth >> 1, iPenSize.iHeight >> 1);
sl@0: 		}
sl@0: 	
sl@0: 	const DirectGdi::TPenStyle oldPenStyle = iPenStyle;	
sl@0: 	iPenStyle = DirectGdi::ESolidPen;
sl@0: 
sl@0: #if defined(_DEBUG)
sl@0: 	TRect deviceRect;
sl@0: 	iDrawDevice->GetDrawRect(deviceRect);
sl@0: #endif
sl@0: 
sl@0: 	TRect clipRect;
sl@0: 	const TInt limit = iDefaultRegionPtr->Count();
sl@0: 	for (TInt count = 0; count < limit; count++)
sl@0: 		{
sl@0: 		clipRect = (*iDefaultRegionPtr)[count];
sl@0: 		if (!clipRect.Intersects(temp))
sl@0: 			{
sl@0: 			continue;
sl@0: 			}
sl@0: 
sl@0: 		clipRect.Intersection(temp);	
sl@0: 		if (iPenSize == oneByOne)
sl@0: 			{
sl@0: 			if (clipRect.Contains(point))
sl@0: 				{
sl@0: 				GRAPHICS_ASSERT_DEBUG(point.iX >= deviceRect.iTl.iX, EDirectGdiPanicOutOfBounds);
sl@0: 				GRAPHICS_ASSERT_DEBUG(point.iY >= deviceRect.iTl.iY, EDirectGdiPanicOutOfBounds);
sl@0: 				GRAPHICS_ASSERT_DEBUG(point.iX <= deviceRect.iBr.iX, EDirectGdiPanicOutOfBounds);
sl@0: 				GRAPHICS_ASSERT_DEBUG(point.iY <= deviceRect.iBr.iY, EDirectGdiPanicOutOfBounds);
sl@0: 				
sl@0: 				iDrawDevice->WriteRgb(point.iX,point.iY,iPenColor, GcDrawMode(iDrawMode));
sl@0: 				}
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			PenDrawClipped(point, clipRect);
sl@0: 			}
sl@0: 
sl@0: 		iDrawDevice->UpdateRegion(clipRect);
sl@0: 		}
sl@0: 
sl@0: 	iPenStyle = oldPenStyle;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Clips the horizontal drawing of a line between two points.
sl@0: The vertical location must be inside the clip rect.
sl@0: 
sl@0: @param aLeft The left hand side coordinate.
sl@0: @param aRight The right hand side coordinate.
sl@0: @param aClipRect The rectangle to which the line is clipped.
sl@0:  */
sl@0: void CSwDirectGdiEngine::ClipFillLine(TPoint aLeft,TPoint aRight, TRect aClipRect)
sl@0: 	{
sl@0: 	if (aLeft.iY < aClipRect.iTl.iY || aLeft.iY >= aClipRect.iBr.iY)
sl@0: 		return;
sl@0: 
sl@0: 	aLeft.iX = Max(aLeft.iX,aClipRect.iTl.iX);
sl@0: 	aRight.iX = Min(aRight.iX,aClipRect.iBr.iX-1);
sl@0: 	if (aLeft.iX > aRight.iX)
sl@0: 		{
sl@0: 		return;
sl@0: 		}
sl@0: 
sl@0: 	TInt xcoord = aLeft.iX;
sl@0: 	TInt length = aRight.iX - aLeft.iX + 1;
sl@0: 	TPoint origin(iOrigin + iBrushOrigin);
sl@0: 	const CGraphicsContext::TDrawMode drawMode = GcDrawMode(iDrawMode);
sl@0: 
sl@0: 	switch(iBrushStyle)
sl@0: 		{
sl@0: 	case DirectGdi::ESolidBrush:
sl@0: 		iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode);
sl@0: 		return;
sl@0: 	case DirectGdi::EPatternedBrush:
sl@0: 		{
sl@0: 		iBrushBitmap.BeginDataAccess();
sl@0: 		CBitwiseBitmap* brushBitmap = iBrushBitmap.Address();
sl@0: 		if (brushBitmap)
sl@0: 			{
sl@0: 			TRect sourcerect(aLeft,TSize(length,1));
sl@0: 			sourcerect.Move(-origin);
sl@0: 			DoBitBlt(aLeft,brushBitmap,iBrushBitmap.DataAddress(),iBrushBitmap.DataStride(),sourcerect);
sl@0: 			}
sl@0: 		iBrushBitmap.EndDataAccess(ETrue);
sl@0: 		return;
sl@0: 		}
sl@0: 	case DirectGdi::EHorizontalHatchBrush:
sl@0: 		iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode);
sl@0: 		if (Abs((aLeft.iY - origin.iY) % 3) == 2)
sl@0: 			iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iPenColor,drawMode);
sl@0: 		return;
sl@0: 	case DirectGdi::EVerticalHatchBrush:
sl@0: 		iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode);
sl@0: 		while (Abs((xcoord - origin.iX) % 3) != 2)
sl@0: 			xcoord++;
sl@0: 		for (; xcoord < aLeft.iX + length; xcoord += 3)
sl@0: 			iDrawDevice->WriteRgb(xcoord,aLeft.iY,iPenColor,drawMode);
sl@0: 		return;
sl@0: 	case DirectGdi::ESquareCrossHatchBrush:
sl@0: 		iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode);
sl@0: 		if (Abs((aLeft.iY - origin.iY) % 3) == 2)
sl@0: 			iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iPenColor,drawMode);
sl@0: 		else
sl@0: 			{
sl@0: 			while (Abs((xcoord - origin.iX) % 3) != 2)
sl@0: 				xcoord++;
sl@0: 			for (; xcoord < aLeft.iX + length; xcoord += 3)
sl@0: 				iDrawDevice->WriteRgb(xcoord,aLeft.iY,iPenColor,drawMode);
sl@0: 			}
sl@0: 		return;
sl@0: 	case DirectGdi::EForwardDiagonalHatchBrush:
sl@0: 		{
sl@0: 		iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode);
sl@0: 		TInt diff = (origin.iX + origin.iY - aLeft.iX - aLeft.iY) % 3;
sl@0: 		if (diff < 0)
sl@0: 			diff += 3;
sl@0: 		xcoord += diff;
sl@0: 		for (; xcoord < aLeft.iX + length; xcoord += 3)
sl@0: 			iDrawDevice->WriteRgb(xcoord,aLeft.iY,iPenColor,drawMode);
sl@0: 		}
sl@0: 		return;
sl@0: 	case DirectGdi::ERearwardDiagonalHatchBrush:
sl@0: 		{
sl@0: 		iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode);
sl@0: 		TInt diff = (origin.iX - origin.iY - aLeft.iX + aLeft.iY) % 3;
sl@0: 		if (diff < 0)
sl@0: 			diff += 3;
sl@0: 		xcoord += diff;
sl@0: 		for (; xcoord < aLeft.iX + length; xcoord += 3)
sl@0: 			iDrawDevice->WriteRgb(xcoord,aLeft.iY,iPenColor,drawMode);
sl@0: 		}
sl@0: 		return;
sl@0: 	case DirectGdi::EDiamondCrossHatchBrush:
sl@0: 		{
sl@0: 		iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode);
sl@0: 		TInt sum = aLeft.iX + aLeft.iY - origin.iX - origin.iY;
sl@0: 		for (; xcoord < aLeft.iX + length; xcoord++,sum++)
sl@0: 			if ((sum & 1) == 0 && ((sum & 3) != 0 || ((xcoord-origin.iX) & 1) == 1))
sl@0: 				iDrawDevice->WriteRgb(xcoord,aLeft.iY,iPenColor,drawMode);
sl@0: 		}
sl@0: 		return;
sl@0: 	default:
sl@0: 		return;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Creates the pen using the current pen size.
sl@0: 
sl@0: @return KErrNoMermory if memory could not be allocated, KErrNone otherwise.
sl@0: */ 
sl@0: TInt CSwDirectGdiEngine::PenAllocate()
sl@0: 	{		
sl@0: 	ResetPenArray();
sl@0: 	
sl@0: 	if (iPenSize.iWidth == 1 && iPenSize.iHeight == 1)
sl@0: 		{
sl@0: 		return KErrNone;
sl@0: 		}
sl@0: 
sl@0: 	const TInt doublePenHeight = iPenSize.iHeight << 1;
sl@0: 
sl@0: 	TInt* penArray = new TInt[doublePenHeight];
sl@0: 	if (penArray == NULL)
sl@0: 		{
sl@0: 		return KErrNoMemory;
sl@0: 		}
sl@0: 
sl@0: 	SetPenArray(penArray);
sl@0: 
sl@0: 	if (iPenSize.iWidth == 1 || iPenSize.iWidth == 2 || iPenSize.iHeight == 1 || iPenSize.iHeight == 2)
sl@0: 		{				
sl@0: 		for (TInt count = 0; count < iPenSize.iHeight; count += 2)
sl@0: 			{
sl@0: 			iPenArray[doublePenHeight - count - 2] = 0;
sl@0: 			iPenArray[doublePenHeight - count - 1] = iPenSize.iWidth - 1;
sl@0: 			iPenArray[count] = 0;
sl@0: 			iPenArray[count + 1] = iPenSize.iWidth - 1;
sl@0: 			}
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		TPoint tl,tr,bl,br;
sl@0: 		TSwDirectGdiEllipse ellipse;
sl@0: 		ellipse.Construct(TRect(iPenSize));		
sl@0: 		for (TInt count = 0; count < iPenSize.iHeight; count += 2)
sl@0: 			{
sl@0: 			//coverity[check_return]
sl@0: 			//coverity[unchecked_value]
sl@0: 			ellipse.NextStep(tl,tr,bl,br);
sl@0: 			iPenArray[doublePenHeight - count - 2] = bl.iX;
sl@0: 			iPenArray[doublePenHeight - count - 1] = br.iX;
sl@0: 			iPenArray[count] = tl.iX;
sl@0: 			iPenArray[count + 1] = tr.iX;
sl@0: 			}
sl@0: 		}	
sl@0: 	
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Draws at a given point using the current settings, if within clipping rectangle.
sl@0: 
sl@0: @pre The pen size is greater than one.
sl@0:  
sl@0: @param aPoint The location to draw at.
sl@0: @param aClipRect The clipping rectangle.
sl@0: @panic DGDIAdapter 1016, if the current pen size is zero (debug only).
sl@0: */ 
sl@0: void CSwDirectGdiEngine::PenDrawClipped(TPoint aPoint, const TRect& aClipRect)
sl@0: 	{	
sl@0: 	GRAPHICS_ASSERT_DEBUG(iPenSize.iWidth > 0,EDirectGdiPanicZeroLength);
sl@0: 	GRAPHICS_ASSERT_DEBUG(iPenSize.iHeight > 0,EDirectGdiPanicZeroLength);
sl@0: 
sl@0: 	aPoint.iX -= ((iPenSize.iWidth - 1) >> 1);
sl@0: 	aPoint.iY -= ((iPenSize.iHeight - 1) >> 1);
sl@0: 
sl@0: 	if (iPenSize.iWidth == 1 && iPenSize.iHeight == 1)
sl@0: 		{
sl@0: 		if ( (iPenStyle == DirectGdi::ESolidPen || (iDotMask & (1 << (iDotParam % iDotLength)))) &&
sl@0: 		      aClipRect.Contains(aPoint) )
sl@0: 			{
sl@0: 			iDrawDevice->WriteRgb(aPoint.iX, aPoint.iY, iPenColor, GcDrawMode(iDrawMode));		
sl@0: 			}				
sl@0: 		}
sl@0: 	else if (iPenArray != NULL)
sl@0: 		{
sl@0: 		TInt yCoord = aPoint.iY;
sl@0: 		const TInt maxdim = Max(iPenSize.iWidth,iPenSize.iHeight);
sl@0: 		const TInt doublePenHeight = iPenSize.iHeight << 1;
sl@0: 
sl@0: 		if (iPenStyle == DirectGdi::ESolidPen || (iDotMask & (1 << ((iDotParam / maxdim) % iDotLength))))
sl@0: 			{
sl@0: 			for (TInt ix = 0; ix < doublePenHeight; yCoord++, ix += 2)
sl@0: 				{
sl@0: 				if (yCoord >= aClipRect.iTl.iY && yCoord < aClipRect.iBr.iY)
sl@0: 					{
sl@0: 					TInt left = aPoint.iX + iPenArray[ix];
sl@0: 					TInt right = aPoint.iX + iPenArray[ix+1];
sl@0: 					if (left < aClipRect.iTl.iX)
sl@0: 						{
sl@0: 						left = aClipRect.iTl.iX;
sl@0: 						}
sl@0: 					if (right >= aClipRect.iBr.iX)
sl@0: 						{
sl@0: 						right = aClipRect.iBr.iX - 1;
sl@0: 						}
sl@0: 					if (left <= right)
sl@0: 						{
sl@0: 						iDrawDevice->WriteRgbMulti(left, yCoord, right - left + 1, 1, iPenColor, CGraphicsContext::EDrawModePEN);
sl@0: 						}
sl@0: 					}
sl@0: 				}
sl@0: 			}
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		TPoint tl,tr,bl,br;
sl@0: 		TSwDirectGdiEllipse ellipse;
sl@0: 		ellipse.Construct(TRect(aPoint,iPenSize));
sl@0: 		while (!ellipse.NextStep(tl,tr,bl,br))
sl@0: 			{
sl@0: 			if (tl.iY >= aClipRect.iTl.iY && tl.iY < aClipRect.iBr.iY)
sl@0: 				{
sl@0: 				if (tl.iX < aClipRect.iTl.iX)
sl@0: 					{
sl@0: 					tl.iX = aClipRect.iTl.iX;
sl@0: 					}
sl@0: 				if (tr.iX >= aClipRect.iBr.iX)
sl@0: 					{
sl@0: 					tr.iX = aClipRect.iBr.iX-1;
sl@0: 					}
sl@0: 				if (tl.iX <= tr.iX)
sl@0: 					{
sl@0: 					iDrawDevice->WriteRgbMulti(tl.iX,tl.iY,tr.iX - tl.iX + 1,1,iPenColor,CGraphicsContext::EDrawModePEN);
sl@0: 					}
sl@0: 				}
sl@0: 			if (bl.iY >= aClipRect.iTl.iY && bl.iY < aClipRect.iBr.iY)
sl@0: 				{
sl@0: 				if (bl.iX < aClipRect.iTl.iX)
sl@0: 					{
sl@0: 					bl.iX = aClipRect.iTl.iX;
sl@0: 					}
sl@0: 				if (br.iX >= aClipRect.iBr.iX)
sl@0: 					{
sl@0: 					br.iX = aClipRect.iBr.iX - 1;
sl@0: 					}
sl@0: 				if (bl.iX <= br.iX)
sl@0: 					{
sl@0: 					iDrawDevice->WriteRgbMulti(bl.iX,bl.iY,br.iX - bl.iX + 1,1,iPenColor,CGraphicsContext::EDrawModePEN);
sl@0: 					}
sl@0: 				}
sl@0: 			}
sl@0: 
sl@0: 		if (tl.iY == bl.iY && tl.iY >= aClipRect.iTl.iY && tl.iY < aClipRect.iBr.iY)
sl@0: 			{
sl@0: 			if (tl.iX < aClipRect.iTl.iX)
sl@0: 				{
sl@0: 				tl.iX = aClipRect.iTl.iX;
sl@0: 				}
sl@0: 			if (tr.iX >= aClipRect.iBr.iX)
sl@0: 				{
sl@0: 				tr.iX = aClipRect.iBr.iX - 1;
sl@0: 				}
sl@0: 			if (tl.iX <= tr.iX)
sl@0: 				{
sl@0: 				iDrawDevice->WriteRgbMulti(tl.iX,tl.iY,tr.iX - tl.iX + 1,1, iPenColor, CGraphicsContext::EDrawModePEN);
sl@0: 				}
sl@0: 			}
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: @panic DGDIAdapter 1016, if the current pen size is zero (debug only).
sl@0: */
sl@0: void CSwDirectGdiEngine::PenDrawDeferred(TPoint aPoint,TInt* aArray, TInt aFirstElement)
sl@0: 	{
sl@0: 	GRAPHICS_ASSERT_DEBUG(iPenArray,EDirectGdiPanicZeroLength);
sl@0: 	GRAPHICS_ASSERT_DEBUG(iPenSize.iWidth > 0,EDirectGdiPanicZeroLength);
sl@0: 	GRAPHICS_ASSERT_DEBUG(iPenSize.iHeight > 0,EDirectGdiPanicZeroLength);
sl@0: 
sl@0: 	aPoint.iX -= ((iPenSize.iWidth - 1) >> 1);
sl@0: 	const TInt doublepenheight = iPenSize.iHeight << 1;
sl@0: 
sl@0: 	for (TInt ix = 0; ix < doublepenheight; ix++,aFirstElement++)
sl@0: 		{
sl@0: 		if (aFirstElement == doublepenheight)
sl@0: 			{
sl@0: 			aFirstElement = 0;
sl@0: 			}
sl@0: 		TInt newval = aPoint.iX + iPenArray[ix];
sl@0: 		if (newval < aArray[aFirstElement])
sl@0: 			{
sl@0: 			aArray[aFirstElement] = newval;
sl@0: 			}
sl@0: 
sl@0: 		ix++;
sl@0: 		aFirstElement++;
sl@0: 		newval = aPoint.iX + iPenArray[ix];
sl@0: 		if (newval > aArray[aFirstElement])
sl@0: 			{
sl@0: 			aArray[aFirstElement] = newval;
sl@0: 			}
sl@0: 		}
sl@0: 	}