// Copyright (c) 2007-2009 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 "directgdiadapter.h"

 #include "swdirectgdiengine.h"

 #include "swdirectgdiellipse.h"

 /** 

 @see MDirectGdiEngine::Clear(const TRect&)

 */	

 void CSwDirectGdiEngine::Clear(const TRect& aRect)

 	{

 	TRect rcpy(aRect);

 	rcpy.Move(iOrigin);	

 	DirectGdi::TBrushStyle tempbrushstyle = iBrushStyle;

 	iBrushStyle = DirectGdi::ESolidBrush;

 	RectFill(rcpy);	

 	iBrushStyle = tempbrushstyle;

 	}

 /**

 @see MDirectGdiEngine::Clear()

 */

 void CSwDirectGdiEngine::Clear()

 	{

 	TRect deviceRect;

 	iDrawDevice->GetDrawRect(deviceRect);

 	if ((iOrigin.iX!=0) || (iOrigin.iY!=0))

 		{

 		deviceRect.Move(-iOrigin);

 		}

 	Clear(deviceRect);

 	}

 /**

 @see MDirectGdiEngine::Plot()

 */

 void CSwDirectGdiEngine::Plot(const TPoint& aPoint)

 	{

 	TRect targetRect(aPoint + iOrigin, TSize(1,1));

 	targetRect.Grow((iPenSize.iWidth >> 1) + 1,(iPenSize.iHeight >> 1) + 1);

 	DoPlot(aPoint);	

 	}

 /**

 Draws a single point.

 @see Plot()

 @param aPoint The location to plot at.

 @panic DGDIAdapter 1013, if the point being plotted is out of bounds of the target (debug only).

  */

 void CSwDirectGdiEngine::DoPlot(const TPoint& aPoint)

 	{

 	const TSize oneByOne(1,1);

 	const TPoint point(aPoint + iOrigin);

 	TRect temp(point,oneByOne);

 	if (iPenSize.iWidth > 1 || iPenSize.iHeight > 1)

 		{

 		temp.Grow(iPenSize.iWidth >> 1, iPenSize.iHeight >> 1);

 		}

 	const DirectGdi::TPenStyle oldPenStyle = iPenStyle;	

 	iPenStyle = DirectGdi::ESolidPen;

 #if defined(_DEBUG)

 	TRect deviceRect;

 	iDrawDevice->GetDrawRect(deviceRect);

 #endif

 	TRect clipRect;

 	const TInt limit = iDefaultRegionPtr->Count();

 	for (TInt count = 0; count < limit; count++)

 		{

 		clipRect = (*iDefaultRegionPtr)[count];

 		if (!clipRect.Intersects(temp))

 			{

 			continue;

 			}

 		clipRect.Intersection(temp);	

 		if (iPenSize == oneByOne)

 			{

 			if (clipRect.Contains(point))

 				{

 				GRAPHICS_ASSERT_DEBUG(point.iX >= deviceRect.iTl.iX, EDirectGdiPanicOutOfBounds);

 				GRAPHICS_ASSERT_DEBUG(point.iY >= deviceRect.iTl.iY, EDirectGdiPanicOutOfBounds);

 				GRAPHICS_ASSERT_DEBUG(point.iX <= deviceRect.iBr.iX, EDirectGdiPanicOutOfBounds);

 				GRAPHICS_ASSERT_DEBUG(point.iY <= deviceRect.iBr.iY, EDirectGdiPanicOutOfBounds);

 				iDrawDevice->WriteRgb(point.iX,point.iY,iPenColor, GcDrawMode(iDrawMode));

 				}

 			}

 		else

 			{

 			PenDrawClipped(point, clipRect);

 			}

 		iDrawDevice->UpdateRegion(clipRect);

 		}

 	iPenStyle = oldPenStyle;

 	}

 /**

 Clips the horizontal drawing of a line between two points.

 The vertical location must be inside the clip rect.

 @param aLeft The left hand side coordinate.

 @param aRight The right hand side coordinate.

 @param aClipRect The rectangle to which the line is clipped.

  */

 void CSwDirectGdiEngine::ClipFillLine(TPoint aLeft,TPoint aRight, TRect aClipRect)

 	{

 	if (aLeft.iY < aClipRect.iTl.iY || aLeft.iY >= aClipRect.iBr.iY)

 		return;

 	aLeft.iX = Max(aLeft.iX,aClipRect.iTl.iX);

 	aRight.iX = Min(aRight.iX,aClipRect.iBr.iX-1);

 	if (aLeft.iX > aRight.iX)

 		{

 		return;

 		}

 	TInt xcoord = aLeft.iX;

 	TInt length = aRight.iX - aLeft.iX + 1;

 	TPoint origin(iOrigin + iBrushOrigin);

 	const CGraphicsContext::TDrawMode drawMode = GcDrawMode(iDrawMode);

 	switch(iBrushStyle)

 		{

 	case DirectGdi::ESolidBrush:

 		iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode);

 		return;

 	case DirectGdi::EPatternedBrush:

 		{

 		iBrushBitmap.BeginDataAccess();

 		CBitwiseBitmap* brushBitmap = iBrushBitmap.Address();

 		if (brushBitmap)

 			{

 			TRect sourcerect(aLeft,TSize(length,1));

 			sourcerect.Move(-origin);

 			DoBitBlt(aLeft,brushBitmap,iBrushBitmap.DataAddress(),iBrushBitmap.DataStride(),sourcerect);

 			}

 		iBrushBitmap.EndDataAccess(ETrue);

 		return;

 		}

 	case DirectGdi::EHorizontalHatchBrush:

 		iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode);

 		if (Abs((aLeft.iY - origin.iY) % 3) == 2)

 			iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iPenColor,drawMode);

 		return;

 	case DirectGdi::EVerticalHatchBrush:

 		iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode);

 		while (Abs((xcoord - origin.iX) % 3) != 2)

 			xcoord++;

 		for (; xcoord < aLeft.iX + length; xcoord += 3)

 			iDrawDevice->WriteRgb(xcoord,aLeft.iY,iPenColor,drawMode);

 		return;

 	case DirectGdi::ESquareCrossHatchBrush:

 		iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode);

 		if (Abs((aLeft.iY - origin.iY) % 3) == 2)

 			iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iPenColor,drawMode);

 		else

 			{

 			while (Abs((xcoord - origin.iX) % 3) != 2)

 				xcoord++;

 			for (; xcoord < aLeft.iX + length; xcoord += 3)

 				iDrawDevice->WriteRgb(xcoord,aLeft.iY,iPenColor,drawMode);

 			}

 		return;

 	case DirectGdi::EForwardDiagonalHatchBrush:

 		{

 		iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode);

 		TInt diff = (origin.iX + origin.iY - aLeft.iX - aLeft.iY) % 3;

 		if (diff < 0)

 			diff += 3;

 		xcoord += diff;

 		for (; xcoord < aLeft.iX + length; xcoord += 3)

 			iDrawDevice->WriteRgb(xcoord,aLeft.iY,iPenColor,drawMode);

 		}

 		return;

 	case DirectGdi::ERearwardDiagonalHatchBrush:

 		{

 		iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode);

 		TInt diff = (origin.iX - origin.iY - aLeft.iX + aLeft.iY) % 3;

 		if (diff < 0)

 			diff += 3;

 		xcoord += diff;

 		for (; xcoord < aLeft.iX + length; xcoord += 3)

 			iDrawDevice->WriteRgb(xcoord,aLeft.iY,iPenColor,drawMode);

 		}

 		return;

 	case DirectGdi::EDiamondCrossHatchBrush:

 		{

 		iDrawDevice->WriteRgbMulti(aLeft.iX,aLeft.iY,length,1,iBrushColor,drawMode);

 		TInt sum = aLeft.iX + aLeft.iY - origin.iX - origin.iY;

 		for (; xcoord < aLeft.iX + length; xcoord++,sum++)

 			if ((sum & 1) == 0 && ((sum & 3) != 0 || ((xcoord-origin.iX) & 1) == 1))

 				iDrawDevice->WriteRgb(xcoord,aLeft.iY,iPenColor,drawMode);

 		}

 		return;

 	default:

 		return;

 		}

 	}

 /**

 Creates the pen using the current pen size.

 @return KErrNoMermory if memory could not be allocated, KErrNone otherwise.

 */ 

 TInt CSwDirectGdiEngine::PenAllocate()

 	{		

 	ResetPenArray();

 	if (iPenSize.iWidth == 1 && iPenSize.iHeight == 1)

 		{

 		return KErrNone;

 		}

 	const TInt doublePenHeight = iPenSize.iHeight << 1;

 	TInt* penArray = new TInt[doublePenHeight];

 	if (penArray == NULL)

 		{

 		return KErrNoMemory;

 		}

 	SetPenArray(penArray);

 	if (iPenSize.iWidth == 1 || iPenSize.iWidth == 2 || iPenSize.iHeight == 1 || iPenSize.iHeight == 2)

 		{				

 		for (TInt count = 0; count < iPenSize.iHeight; count += 2)

 			{

 			iPenArray[doublePenHeight - count - 2] = 0;

 			iPenArray[doublePenHeight - count - 1] = iPenSize.iWidth - 1;

 			iPenArray[count] = 0;

 			iPenArray[count + 1] = iPenSize.iWidth - 1;

 			}

 		}

 	else

 		{

 		TPoint tl,tr,bl,br;

 		TSwDirectGdiEllipse ellipse;

 		ellipse.Construct(TRect(iPenSize));		

 		for (TInt count = 0; count < iPenSize.iHeight; count += 2)

 			{

 			//coverity[check_return]

 			//coverity[unchecked_value]

 			ellipse.NextStep(tl,tr,bl,br);

 			iPenArray[doublePenHeight - count - 2] = bl.iX;

 			iPenArray[doublePenHeight - count - 1] = br.iX;

 			iPenArray[count] = tl.iX;

 			iPenArray[count + 1] = tr.iX;

 			}

 		}	

 	return KErrNone;

 	}

 /**

 Draws at a given point using the current settings, if within clipping rectangle.

 @pre The pen size is greater than one.

 @param aPoint The location to draw at.

 @param aClipRect The clipping rectangle.

 @panic DGDIAdapter 1016, if the current pen size is zero (debug only).

 */ 

 void CSwDirectGdiEngine::PenDrawClipped(TPoint aPoint, const TRect& aClipRect)

 	{	

 	GRAPHICS_ASSERT_DEBUG(iPenSize.iWidth > 0,EDirectGdiPanicZeroLength);

 	GRAPHICS_ASSERT_DEBUG(iPenSize.iHeight > 0,EDirectGdiPanicZeroLength);

 	aPoint.iX -= ((iPenSize.iWidth - 1) >> 1);

 	aPoint.iY -= ((iPenSize.iHeight - 1) >> 1);

 	if (iPenSize.iWidth == 1 && iPenSize.iHeight == 1)

 		{

 		if ( (iPenStyle == DirectGdi::ESolidPen || (iDotMask & (1 << (iDotParam % iDotLength)))) &&

 		      aClipRect.Contains(aPoint) )

 			{

 			iDrawDevice->WriteRgb(aPoint.iX, aPoint.iY, iPenColor, GcDrawMode(iDrawMode));		

 			}				

 		}

 	else if (iPenArray != NULL)

 		{

 		TInt yCoord = aPoint.iY;

 		const TInt maxdim = Max(iPenSize.iWidth,iPenSize.iHeight);

 		const TInt doublePenHeight = iPenSize.iHeight << 1;

 		if (iPenStyle == DirectGdi::ESolidPen || (iDotMask & (1 << ((iDotParam / maxdim) % iDotLength))))

 			{

 			for (TInt ix = 0; ix < doublePenHeight; yCoord++, ix += 2)

 				{

 				if (yCoord >= aClipRect.iTl.iY && yCoord < aClipRect.iBr.iY)

 					{

 					TInt left = aPoint.iX + iPenArray[ix];

 					TInt right = aPoint.iX + iPenArray[ix+1];

 					if (left < aClipRect.iTl.iX)

 						{

 						left = aClipRect.iTl.iX;

 						}

 					if (right >= aClipRect.iBr.iX)

 						{

 						right = aClipRect.iBr.iX - 1;

 						}

 					if (left <= right)

 						{

 						iDrawDevice->WriteRgbMulti(left, yCoord, right - left + 1, 1, iPenColor, CGraphicsContext::EDrawModePEN);

 						}

 					}

 				}

 			}

 		}

 	else

 		{

 		TPoint tl,tr,bl,br;

 		TSwDirectGdiEllipse ellipse;

 		ellipse.Construct(TRect(aPoint,iPenSize));

 		while (!ellipse.NextStep(tl,tr,bl,br))

 			{

 			if (tl.iY >= aClipRect.iTl.iY && tl.iY < aClipRect.iBr.iY)

 				{

 				if (tl.iX < aClipRect.iTl.iX)

 					{

 					tl.iX = aClipRect.iTl.iX;

 					}

 				if (tr.iX >= aClipRect.iBr.iX)

 					{

 					tr.iX = aClipRect.iBr.iX-1;

 					}

 				if (tl.iX <= tr.iX)

 					{

 					iDrawDevice->WriteRgbMulti(tl.iX,tl.iY,tr.iX - tl.iX + 1,1,iPenColor,CGraphicsContext::EDrawModePEN);

 					}

 				}

 			if (bl.iY >= aClipRect.iTl.iY && bl.iY < aClipRect.iBr.iY)

 				{

 				if (bl.iX < aClipRect.iTl.iX)

 					{

 					bl.iX = aClipRect.iTl.iX;

 					}

 				if (br.iX >= aClipRect.iBr.iX)

 					{

 					br.iX = aClipRect.iBr.iX - 1;

 					}

 				if (bl.iX <= br.iX)

 					{

 					iDrawDevice->WriteRgbMulti(bl.iX,bl.iY,br.iX - bl.iX + 1,1,iPenColor,CGraphicsContext::EDrawModePEN);

 					}

 				}

 			}

 		if (tl.iY == bl.iY && tl.iY >= aClipRect.iTl.iY && tl.iY < aClipRect.iBr.iY)

 			{

 			if (tl.iX < aClipRect.iTl.iX)

 				{

 				tl.iX = aClipRect.iTl.iX;

 				}

 			if (tr.iX >= aClipRect.iBr.iX)

 				{

 				tr.iX = aClipRect.iBr.iX - 1;

 				}

 			if (tl.iX <= tr.iX)

 				{

 				iDrawDevice->WriteRgbMulti(tl.iX,tl.iY,tr.iX - tl.iX + 1,1, iPenColor, CGraphicsContext::EDrawModePEN);

 				}

 			}

 		}

 	}

 /**

 @panic DGDIAdapter 1016, if the current pen size is zero (debug only).

 */

 void CSwDirectGdiEngine::PenDrawDeferred(TPoint aPoint,TInt* aArray, TInt aFirstElement)

 	{

 	GRAPHICS_ASSERT_DEBUG(iPenArray,EDirectGdiPanicZeroLength);

 	GRAPHICS_ASSERT_DEBUG(iPenSize.iWidth > 0,EDirectGdiPanicZeroLength);

 	GRAPHICS_ASSERT_DEBUG(iPenSize.iHeight > 0,EDirectGdiPanicZeroLength);

 	aPoint.iX -= ((iPenSize.iWidth - 1) >> 1);

 	const TInt doublepenheight = iPenSize.iHeight << 1;

 	for (TInt ix = 0; ix < doublepenheight; ix++,aFirstElement++)

 		{

 		if (aFirstElement == doublepenheight)

 			{

 			aFirstElement = 0;

 			}

 		TInt newval = aPoint.iX + iPenArray[ix];

 		if (newval < aArray[aFirstElement])

 			{

 			aArray[aFirstElement] = newval;

 			}

 		ix++;

 		aFirstElement++;

 		newval = aPoint.iX + iPenArray[ix];

 		if (newval > aArray[aFirstElement])

 			{

 			aArray[aFirstElement] = newval;

 			}

 		}

 	}