// 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"

 /** 

 @see MDirectGdiEngine::CopyRect()

 */

 void CSwDirectGdiEngine::CopyRect(const TPoint& aOffset, const TRect& aRect)

 	{	

 	TRect deviceRect;

 	iDrawDevice->GetDrawRect(deviceRect);

 	const TPoint back(TPoint(0,0) - aOffset);

 	TRect rcpy(aRect);

 	rcpy.Move(iOrigin);

 	rcpy.Intersection(deviceRect);

 	((TRegion*)iDefaultRegionPtr)->Sort(aOffset);

 	TRect targetRect(rcpy);

 	targetRect.Move(aOffset);

 	targetRect.BoundingRect(rcpy);

 	TRect clipRect(0,0,0,0);

 	const TInt limit = iDefaultRegionPtr->Count();

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

 		{

 		clipRect = (*iDefaultRegionPtr)[count];

 		clipRect.Move(back);

 		if (!clipRect.Intersects(rcpy))

 			{

 			continue;

 			}

 		clipRect.Intersection(rcpy);

 		DirectGdi::TDrawMode drawMode = iDrawMode;

 		iDrawMode = DirectGdi::EDrawModeWriteAlpha;

 		DoCopyRect(aOffset, clipRect);

 		iDrawMode = drawMode; // restore the previous draw mode

 		clipRect.Move(aOffset);

 		iDrawDevice->UpdateRegion(clipRect);

 		}

 	}

 /**

 @see CopyRect()

 @panic DGDIAdapter 1013, if aRect or aOffset are outside of the destination bounds (debug only).

  */ 

 void CSwDirectGdiEngine::DoCopyRect(const TPoint& aOffset, const TRect& aRect)

 	{

 #ifdef _DEBUG

 	TRect deviceRect;

 	iDrawDevice->GetDrawRect(deviceRect);

 #endif

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

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

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

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

 	TRect offsetRect(aRect);

 	offsetRect.Move(aOffset);

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

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

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

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

 	TInt y1 = aRect.iTl.iY;

 	TInt y2 = aRect.iBr.iY; 

 	TInt yinc = 1; // default y2>y1

 	if (aOffset.iY > 0)	// y1>y2

 		{

 		y1 = aRect.iBr.iY - 1;

 		y2 = aRect.iTl.iY - 1;

 		yinc = -1;

 		}

 	const TInt width = aRect.Width();

 	const TInt xoffset = aRect.iTl.iX + aOffset.iX;

 	const TDisplayMode dispMode = ScanLineBufferDisplayMode(iDrawDevice);

 	TUint32* scanLineBuffer = iDrawDevice->ScanLineBuffer();

 	for (TInt row = y1; row != y2; row += yinc)

 		{

 		iDrawDevice->ReadLine(aRect.iTl.iX, row, width, scanLineBuffer, dispMode);

 		iDrawDevice->WriteLine(xoffset, row + aOffset.iY, width, scanLineBuffer, GcDrawMode(iDrawMode));

 		}

 	}

 /** 

 @see MDirectGdiEngine::DrawRect()

 */

 void CSwDirectGdiEngine::DrawRect(const TRect& aRect)

 	{

 	TRect rcpy(aRect);

 	iBrushBitmap.BeginDataAccess();

 	if ((iPenSize.iWidth == 1) && (iPenSize.iHeight == 1) && iPenStyle != DirectGdi::ENullPen)

 		{

 		const TInt width = rcpy.Width();

 		const TInt height = rcpy.Height();

 		const TPoint currentLinePosition = iLinePosition;

 		if (iPenStyle != DirectGdi::ESolidPen)

 			{

 			iDotParam = 0;

 			}

 		DoDrawLine(rcpy.iTl,TPoint(rcpy.iBr.iX,rcpy.iTl.iY),ETrue); // top

 		if (height > 2 && width > 1)

 			{

 			DoDrawLine(TPoint(rcpy.iBr.iX-1,rcpy.iTl.iY+1),TPoint(rcpy.iBr.iX-1,rcpy.iBr.iY-1),ETrue); // right

 			}

 		if (height > 1)

 			{

 			DoDrawLine(TPoint(rcpy.iBr.iX-1,rcpy.iBr.iY-1),TPoint(rcpy.iTl.iX-1,rcpy.iBr.iY-1),ETrue); // bottom

 			}

 		if (height > 2)

 			{

 			DoDrawLine(TPoint(rcpy.iTl.iX,rcpy.iBr.iY-2),rcpy.iTl,ETrue); // left

 			}

 		// Restore internal line position in case it has been modified by DoDrawLine().

 		// DrawRect() should not be modifying it.

 		iLinePosition = currentLinePosition;

 		if (width < 3 || height < 3)

 			{

 			goto nofill;

 			}

 		rcpy.Shrink(1,1);

 		rcpy.Move(iOrigin);

 		}

 	else if ((iPenStyle != DirectGdi::ENullPen) && (iPenSize.iWidth >= 1 && iPenSize.iHeight >= 1))

 		{

 		rcpy.Move(iOrigin);

 		const DirectGdi::TBrushStyle tempbrushstyle = iBrushStyle;

 		const TRgb tempbrushColor = iBrushColor;

 		const DirectGdi::TDrawMode tempdrawmode = iDrawMode;

 		const TInt halfpenwidth = (iPenSize.iWidth - 1) >> 1;

 		const TInt halfpenheight = (iPenSize.iHeight - 1) >> 1;

 		const TInt otherhalfwidth = (iPenSize.iWidth >> 1) + 1;

 		const TInt otherhalfheight = (iPenSize.iHeight >> 1) + 1;

 		rcpy.iBr.iX--;

 		rcpy.iBr.iY--;

 		if (((rcpy.iBr.iY - rcpy.iTl.iY) <= (iPenSize.iHeight + 1)) || ((rcpy.iBr.iX - rcpy.iTl.iX) <= (iPenSize.iWidth + 1)))

 			{

 			iBrushColor = iPenColor;

 			iBrushStyle = DirectGdi::ESolidBrush;

 			if(iDrawMode != DirectGdi::EDrawModeWriteAlpha)

 				{			

 				iDrawMode = DirectGdi::EDrawModePEN;

 				}

 			rcpy.iTl.iX -= halfpenwidth;

 			rcpy.iTl.iY -= halfpenheight;

 			rcpy.iBr.iX += otherhalfwidth;

 			rcpy.iBr.iY += otherhalfheight;			

 			RectFill(rcpy);

 			}

 		else

 			{

 			// In the event the pen outline is semi-transparent, we must do the fill first so that the

 			// outline is blended over the top.

 			RectFill(rcpy);

 			iBrushColor = iPenColor;

 			iBrushStyle = DirectGdi::ESolidBrush;

 			if(iDrawMode != DirectGdi::EDrawModeWriteAlpha)

 				{			

 				iDrawMode = DirectGdi::EDrawModePEN;

 				}

 			RectFill(TRect(rcpy.iTl.iX - halfpenwidth,rcpy.iTl.iY - halfpenheight,rcpy.iBr.iX + otherhalfwidth,rcpy.iTl.iY + otherhalfheight)); // top

 			RectFill(TRect(rcpy.iTl.iX - halfpenwidth,rcpy.iTl.iY + otherhalfheight,rcpy.iTl.iX + otherhalfwidth,rcpy.iBr.iY - halfpenheight)); // left

 			RectFill(TRect(rcpy.iBr.iX - halfpenwidth,rcpy.iTl.iY + otherhalfheight,rcpy.iBr.iX + otherhalfwidth,rcpy.iBr.iY - halfpenheight)); // right

 			RectFill(TRect(rcpy.iTl.iX - halfpenwidth,rcpy.iBr.iY - halfpenheight,rcpy.iBr.iX + otherhalfwidth,rcpy.iBr.iY + otherhalfheight)); // bottom

 			}

 		iBrushStyle = tempbrushstyle;

 		iBrushColor = tempbrushColor;

 		iDrawMode = tempdrawmode;

 		goto nofill;

 		}

 	else

 		{

 		rcpy.Move(iOrigin);

 		}

 	RectFill(rcpy);

 nofill:

 	iBrushBitmap.EndDataAccess(ETrue);

 	}

 /**

 Fills the given area using the current brush.

 @param aRect The area to fill.

 @panic DGDIAdapter 1013, if the a clipping rectangle is fully outside of the destination bounds (debug only).

 @panic DGDIAdapter 7, if using EPatternedBrush with no brush pattern bitmap.

  */ 

 void CSwDirectGdiEngine::RectFill(const TRect& aRect)

 	{	

 	if (aRect.IsEmpty() || iBrushStyle == DirectGdi::ENullBrush)

 		{

 		return;

 		}

 	const TPoint origin = iOrigin + iBrushOrigin;

 	const TInt limit = iDefaultRegionPtr->Count();

 	TRect clipRect(0,0,0,0);

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

 		{

 		clipRect = (*iDefaultRegionPtr)[count];

 		if (!clipRect.Intersects(aRect))

 			{

 			continue;

 			}

 		clipRect.Intersection(aRect);	

 #ifdef _DEBUG

 		TRect deviceRect;

 		iDrawDevice->GetDrawRect(deviceRect);

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

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

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

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

 #endif

 		TInt xcoord = clipRect.iTl.iX;

 		TInt ycoord = clipRect.iTl.iY;

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

 		switch(iBrushStyle)

 		{

 		case DirectGdi::ESolidBrush:

 			iDrawDevice->WriteRgbMulti(clipRect.iTl.iX,clipRect.iTl.iY,

 							clipRect.Width(),clipRect.Height(),iBrushColor,drawMode);

 			break;

 		case DirectGdi::EPatternedBrush:

 			{

 			iBrushBitmap.BeginDataAccess();

 			CBitwiseBitmap* brushbitmap = iBrushBitmap.Address();

 			GRAPHICS_ASSERT_ALWAYS(brushbitmap != NULL, EDirectGdiPanicInvalidBitmap);

 			TRect sourcerect(clipRect);

 			sourcerect.Move(-origin);

 			DoBitBlt(clipRect.iTl,brushbitmap,iBrushBitmap.DataAddress(),iBrushBitmap.DataStride(),sourcerect);

 			iBrushBitmap.EndDataAccess(ETrue);

 			break;

 			}

 		case DirectGdi::EHorizontalHatchBrush:

 			iDrawDevice->WriteRgbMulti(clipRect.iTl.iX,clipRect.iTl.iY,

 					clipRect.Width(),clipRect.Height(),iBrushColor,drawMode);

 			while (Abs((ycoord - origin.iY) % 3) != 2)

 				{

 				ycoord++;

 				}

 			for (; ycoord < clipRect.iBr.iY; ycoord += 3)

 				{

 				iDrawDevice->WriteRgbMulti(clipRect.iTl.iX,ycoord,clipRect.Width(),1,iPenColor,drawMode);

 				}

 				break;

 			case DirectGdi::EVerticalHatchBrush:

 				iDrawDevice->WriteRgbMulti(clipRect.iTl.iX,clipRect.iTl.iY,

 						clipRect.Width(),clipRect.Height(),iBrushColor,drawMode);

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

 					{

 					xcoord++;

 					}

 				for (; xcoord < clipRect.iBr.iX; xcoord += 3)

 					{

 					iDrawDevice->WriteRgbMulti(xcoord,clipRect.iTl.iY,1,clipRect.Height(),iPenColor,drawMode);

 					}

 				break;

 			case DirectGdi::ESquareCrossHatchBrush:

 				iDrawDevice->WriteRgbMulti(clipRect.iTl.iX,clipRect.iTl.iY,

 						clipRect.Width(),clipRect.Height(),iBrushColor,drawMode);

 				while (Abs((ycoord - origin.iY) % 3) != 2)

 					{

 					ycoord++;

 					}

 				for (; ycoord < clipRect.iBr.iY; ycoord += 3) // horizontal lines

 					{

 					iDrawDevice->WriteRgbMulti(clipRect.iTl.iX,ycoord,clipRect.Width(),1,iPenColor,drawMode);

 					}

 				ycoord = clipRect.iTl.iY;

 				while (Abs((ycoord - origin.iY) % 3) != 2 && ycoord < clipRect.iBr.iY) // above the top horizontal line

 					{

 					xcoord = clipRect.iTl.iX;

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

 						{

 						xcoord++;

 						}

 					for (; xcoord < clipRect.iBr.iX; xcoord += 3)

 						{

 						iDrawDevice->WriteRgb(xcoord,ycoord,iPenColor,drawMode);

 						}

 					ycoord++;

 					}

 				ycoord += 3;

 				for (; ycoord < clipRect.iBr.iY; ycoord += 3) // between the top and bottom horizontals

 					{

 					xcoord = clipRect.iTl.iX;

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

 						{

 						xcoord++;

 						}

 					for (; xcoord < clipRect.iBr.iX; xcoord += 3)

 						{

 						iDrawDevice->WriteRgbMulti(xcoord,ycoord - 2,1,2,iPenColor,drawMode);

 						}

 					}

 				ycoord -= 3;

 				while (ycoord < clipRect.iBr.iY) // below the bottom horizontal

 					{

 					xcoord = clipRect.iTl.iX;

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

 						{

 						xcoord++;

 						}

 					for (; xcoord < clipRect.iBr.iX; xcoord += 3)

 						{

 						iDrawDevice->WriteRgb(xcoord,ycoord,iPenColor,drawMode);

 						}

 					ycoord++;

 					}

 				break;

 			case DirectGdi::EForwardDiagonalHatchBrush:

 				iDrawDevice->WriteRgbMulti(clipRect.iTl.iX,clipRect.iTl.iY,

 						clipRect.Width(),clipRect.Height(),iBrushColor,drawMode);

 				for (; ycoord < clipRect.iBr.iY; ycoord++)

 					{

 					xcoord = clipRect.iTl.iX;

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

 					if (diff < 0)

 						{

 						diff += 3;

 						}

 					xcoord += diff;

 					for (; xcoord < clipRect.iBr.iX; xcoord += 3)

 						{

 						iDrawDevice->WriteRgb(xcoord,ycoord,iPenColor,drawMode);

 						}

 					}

 				break;

 			case DirectGdi::ERearwardDiagonalHatchBrush:

 				iDrawDevice->WriteRgbMulti(clipRect.iTl.iX,clipRect.iTl.iY,

 						clipRect.Width(),clipRect.Height(),iBrushColor,drawMode);

 				for (; ycoord < clipRect.iBr.iY; ycoord++)

 					{

 					xcoord = clipRect.iTl.iX;

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

 					if (diff < 0)

 						{

 						diff += 3;

 						}

 					xcoord += diff;

 					for (; xcoord < clipRect.iBr.iX; xcoord += 3)

 						{

 						iDrawDevice->WriteRgb(xcoord,ycoord,iPenColor,drawMode);

 						}

 					}

 				break;

 			case DirectGdi::EDiamondCrossHatchBrush:

 				{

 				iDrawDevice->WriteRgbMulti(clipRect.iTl.iX,clipRect.iTl.iY,

 						clipRect.Width(),clipRect.Height(),iBrushColor,drawMode);

 				TInt sum = xcoord + ycoord - origin.iX - origin.iY;

 				for (; ycoord < clipRect.iBr.iY; ycoord++,sum++)

 					{

 					TInt currentsum = sum;

 					for (xcoord = clipRect.iTl.iX; xcoord < clipRect.iBr.iX; xcoord++,currentsum++)

 						{

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

 							{

 							iDrawDevice->WriteRgb(xcoord,ycoord,iPenColor,drawMode);

 							}

 						}

 					}

 				break;

 				}

 			default:

 				return;

 				}

 			iDrawDevice->UpdateRegion(clipRect);

 			}		

 	}