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 "swdirectgdiengine.h"
sl@0: #include "swdirectgdiellipse.h"
sl@0:    
sl@0: /**
sl@0: @see MDirectGdiEngine::DrawRoundRect()
sl@0: */
sl@0: void CSwDirectGdiEngine::DrawRoundRect(const TRect& aRect, const TSize& aCornerSize)
sl@0: 	{
sl@0: 	TSize cornerSize(aCornerSize);
sl@0: 	cornerSize.iWidth <<= 1;
sl@0: 	cornerSize.iHeight <<= 1;
sl@0: 
sl@0: 	
sl@0: 	TRect rcpy(aRect);
sl@0: 	rcpy.Move(iOrigin);
sl@0: 	TruncateRect(rcpy);
sl@0: 	cornerSize.iWidth = Min(rcpy.Width(),cornerSize.iWidth);
sl@0: 	cornerSize.iHeight = Min(rcpy.Height(),cornerSize.iHeight);
sl@0: 
sl@0: 	TRect targetRect(rcpy);
sl@0: 	targetRect.Grow((iPenSize.iWidth >> 1) + 1,(iPenSize.iHeight >> 1) + 1);
sl@0: 
sl@0: 	if (iBrushStyle != DirectGdi::ENullBrush)
sl@0: 		{
sl@0: 		RoundRectFill(rcpy,cornerSize);
sl@0: 		}
sl@0: 
sl@0: 	if ((iPenStyle != DirectGdi::ENullPen) && ((iPenSize.iWidth > 0) && (iPenSize.iHeight > 0)))
sl@0: 		{
sl@0: 		RoundRectOutline(rcpy, cornerSize);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: @see DrawRoundRect()
sl@0: */
sl@0: void CSwDirectGdiEngine::RoundRectFill(const TRect& aRect, const TSize& aCornerSize)
sl@0: 	{
sl@0: 	TRect rcpy(aRect);
sl@0: 	if (iPenSize.iWidth < 1 || iPenSize.iHeight < 1)
sl@0: 		{
sl@0: 		rcpy.Grow(1,1);
sl@0: 		}
sl@0: 
sl@0: 	TInt xoff = rcpy.Width() - aCornerSize.iWidth;
sl@0: 	TInt yoff = rcpy.Height() - aCornerSize.iHeight;
sl@0: 	TPoint tl, tr, bl, br;
sl@0: 	TInt prevlev = 0;
sl@0: 	TBool draw = EFalse;
sl@0: 
sl@0: 	TRect clipRect(0,0,0,0);
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(aRect))
sl@0: 			{
sl@0: 			continue;
sl@0: 			}
sl@0: 
sl@0: 		draw = ETrue;
sl@0: 		clipRect.Intersection(aRect);
sl@0: 
sl@0: 		TSwDirectGdiEllipse ellipse;
sl@0: 		ellipse.Construct(TRect(rcpy.iTl,rcpy.iTl + aCornerSize));
sl@0: 		ellipse.SingleStep(tl, tr, bl, br);
sl@0: 		prevlev = tl.iY;
sl@0: 
sl@0: 		while (!ellipse.SingleStep(tl, tr, bl, br))
sl@0: 			{
sl@0: 			if (tl.iY == prevlev)
sl@0: 				{
sl@0: 				continue;
sl@0: 				}
sl@0: 
sl@0: 			tl.iX++;
sl@0: 			tr.iX += xoff - 1;
sl@0: 			bl.iX++;
sl@0: 			bl.iY += yoff;
sl@0: 			br.iX += xoff - 1;
sl@0: 			br.iY += yoff;
sl@0: 
sl@0: 			ClipFillLine(tl, tr,clipRect);
sl@0: 			ClipFillLine(bl, br,clipRect);
sl@0: 
sl@0: 			prevlev = tl.iY;
sl@0: 			}
sl@0: 
sl@0: 		iDrawDevice->UpdateRegion(clipRect);
sl@0: 		}
sl@0: 
sl@0: 	if (!draw)
sl@0: 		{
sl@0: 		return;
sl@0: 		}
sl@0: 
sl@0: 	if (tl.iY >= bl.iY)
sl@0: 		{
sl@0: 		tl.iY--;
sl@0: 		br.iY++;
sl@0: 		}
sl@0: 
sl@0: 	tl.iX++;
sl@0: 	tl.iY++;
sl@0: 	br.iX += xoff;
sl@0: 	br.iY += yoff;
sl@0: 
sl@0: 	RectFill(TRect(tl,br));
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: @see DrawRoundRect()
sl@0: */
sl@0: void CSwDirectGdiEngine::RoundRectOutline(const TRect& aRect, const TSize& aCornerSize)
sl@0: 	{
sl@0: 	TRect rcpy(aRect);
sl@0: 	const TInt halfpenwidth = (iPenSize.iWidth + 1) >> 1;
sl@0: 	const TInt halfpenheight = (iPenSize.iHeight + 1) >> 1;
sl@0: 	rcpy.Grow(halfpenwidth,halfpenheight);
sl@0: 
sl@0: 	TPoint tl, tr, bl, br;
sl@0: 	const TInt xoff = aRect.Width() - aCornerSize.iWidth;
sl@0: 	const TInt yoff = aRect.Height() - aCornerSize.iHeight;
sl@0: 	const TInt dotparam = iDotParam;
sl@0: 
sl@0: 	TRect clipRect(0,0,0,0);
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(rcpy))
sl@0: 			{
sl@0: 			continue;
sl@0: 			}
sl@0: 		clipRect.Intersection(rcpy);
sl@0: 
sl@0: 		iDotParam = Max(iPenSize.iWidth >> 1,iPenSize.iHeight >> 1);
sl@0: 		TInt column = aRect.iTl.iX + (aCornerSize.iWidth >> 1);
sl@0: 		TInt lastcolumn = aRect.iTl.iX + xoff + (aCornerSize.iWidth >> 1);
sl@0: 
sl@0: 		for (; column < lastcolumn; column++)
sl@0: 			{
sl@0: 			PenDrawClipped(TPoint(column,aRect.iTl.iY), clipRect);
sl@0: 			PenDrawClipped(TPoint(column,aRect.iBr.iY - 1), clipRect);
sl@0: 			iDotParam += iDotDirection;
sl@0: 			}
sl@0: 
sl@0: 		TSwDirectGdiEllipse ellipse;
sl@0: 		ellipse.Construct(TRect(aRect.iTl,aRect.iTl + aCornerSize));
sl@0: 		while (!ellipse.SingleStep(tl,tr,bl,br))
sl@0: 			{
sl@0: 			tr.iX += xoff;
sl@0: 			bl.iY += yoff;
sl@0: 			br.iX += xoff;
sl@0: 			br.iY += yoff;
sl@0: 
sl@0: 			PenDrawClipped(tl, clipRect);
sl@0: 			PenDrawClipped(tr, clipRect);
sl@0: 			PenDrawClipped(bl, clipRect);
sl@0: 			PenDrawClipped(br, clipRect);
sl@0: 
sl@0: 			iDotParam += iDotDirection;
sl@0: 			}
sl@0: 
sl@0: 		if (tl.iY >= bl.iY)
sl@0: 			{
sl@0: 			tl.iY--;
sl@0: 			bl.iY++;
sl@0: 			}
sl@0: 
sl@0: 		bl.iY += yoff;
sl@0: 
sl@0: 		for (column = tl.iY + 1; column < bl.iY; column++)
sl@0: 			{
sl@0: 			PenDrawClipped(TPoint(aRect.iTl.iX,column), clipRect);
sl@0: 			PenDrawClipped(TPoint(aRect.iBr.iX - 1,column), clipRect);
sl@0: 			iDotParam += iDotDirection;
sl@0: 			}
sl@0: 
sl@0: 		iDrawDevice->UpdateRegion(clipRect);
sl@0: 		}
sl@0: 
sl@0: 	iDotParam = dotparam;
sl@0: 	}