os/graphics/graphicsdeviceinterface/bitgdi/sbit/ROUNDREC.CPP
changeset 0 bde4ae8d615e
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/graphics/graphicsdeviceinterface/bitgdi/sbit/ROUNDREC.CPP	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,230 @@
     1.4 +// Copyright (c) 1997-2009 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 <fntstore.h>
    1.20 +#include <bitmap.h>
    1.21 +#include <bitstd.h>
    1.22 +#include <bitdev.h>
    1.23 +#include "BITPANIC.H"
    1.24 +#include <bitdraw.h>
    1.25 +#include <graphics/fbsrasterizer.h>
    1.26 +
    1.27 +/**
    1.28 +Draws and fills a rectangle with rounded corners.
    1.29 +
    1.30 +The function provides a concrete implementation of the pure virtual
    1.31 +function <code>CGraphicsContext::DrawRoundRect()</code>. The function
    1.32 +behaviour is the same as documented in that class.
    1.33 +*/
    1.34 +EXPORT_C void CFbsBitGc::DrawRoundRect(const TRect& aRect,const TSize& aSize)
    1.35 +	{
    1.36 +	if (CheckDevice(aRect))
    1.37 +		return;
    1.38 +
    1.39 +	TSize ellsize(aSize);
    1.40 +	ellsize.iWidth <<= 1;
    1.41 +	ellsize.iHeight <<= 1;
    1.42 +
    1.43 +	if (ellsize.iWidth < 3 || ellsize.iHeight < 3)
    1.44 +		{
    1.45 +		DrawRect(aRect);
    1.46 +		return;
    1.47 +		}
    1.48 +
    1.49 +	if (aRect.Width() < ellsize.iWidth && aRect.Height() < ellsize.iHeight)
    1.50 +		{
    1.51 +		DrawEllipse(aRect);
    1.52 +		return;
    1.53 +		}
    1.54 +
    1.55 +	TRect rcpy(aRect);
    1.56 +	rcpy.Move(iOrigin);
    1.57 +	iDevice->TruncateRect(rcpy);
    1.58 +	ellsize.iWidth = Min(rcpy.Width(),ellsize.iWidth);
    1.59 +	ellsize.iHeight = Min(rcpy.Height(),ellsize.iHeight);
    1.60 +
    1.61 +	TRect clippedBoundingRect(rcpy);
    1.62 +	clippedBoundingRect.Grow((iPenSize.iWidth >> 1) + 1,(iPenSize.iHeight >> 1) + 1);
    1.63 +	if (!clippedBoundingRect.Intersects(iUserClipRect))
    1.64 +		return;
    1.65 +
    1.66 +	SetupDevice();
    1.67 +	iDevice->DrawingBegin(&iBrushBitmap);
    1.68 +	CFbsRasterizer* brushRasterizer = PrepareRasterizerForExtendedBitmap(iBrushBitmap);
    1.69 +
    1.70 +	if (iBrushStyle != ENullBrush)
    1.71 +		RoundRectFill(rcpy,ellsize);
    1.72 +
    1.73 +	if (iPenStyle != ENullPen && iPenSize.iWidth > 0 && iPenSize.iHeight > 0)
    1.74 +		RoundRectOutline(rcpy,ellsize);
    1.75 +
    1.76 +	if (brushRasterizer)
    1.77 +		{
    1.78 +		brushRasterizer->EndBitmap(iBrushBitmap.SerialNumber());
    1.79 +		}
    1.80 +	iDevice->DrawingEnd(&iBrushBitmap);
    1.81 +	}
    1.82 +
    1.83 +// if iBrushBitmap is an extended bitmap, PrepareRasterizerForExtendedBitmap() must have been called before this method
    1.84 +void CFbsBitGc::RoundRectFill(const TRect& aRect,TSize aSize)
    1.85 +	{
    1.86 +	TRect rcpy(aRect);
    1.87 +	if (iPenSize.iWidth < 1 || iPenSize.iHeight < 1)
    1.88 +		rcpy.Grow(1,1);
    1.89 +	AddRect(rcpy);
    1.90 +
    1.91 +	if (rcpy.iBr.iX - rcpy.iTl.iX < aSize.iWidth)
    1.92 +		aSize.iWidth = rcpy.Width();
    1.93 +	if (rcpy.iBr.iY - rcpy.iTl.iY < aSize.iHeight)
    1.94 +		aSize.iHeight = rcpy.Height();
    1.95 +
    1.96 +	TInt xoff = rcpy.Width() - aSize.iWidth;
    1.97 +	TInt yoff = rcpy.Height() - aSize.iHeight;
    1.98 +	TPoint tl,tr,bl,br;
    1.99 +	TInt prevlev = 0;
   1.100 +	TBool draw = EFalse;
   1.101 +
   1.102 +	const TInt limit = iDefaultRegionPtr->Count();
   1.103 +	for (TInt count = 0; count < limit; count++)
   1.104 +		{
   1.105 +		iClipRect = (*iDefaultRegionPtr)[count];
   1.106 +		if (UserClipRect(iClipRect))
   1.107 +			continue;
   1.108 +		if (!iClipRect.Intersects(aRect))
   1.109 +			continue;
   1.110 +
   1.111 +		draw = ETrue;
   1.112 +		iClipRect.Intersection(aRect);
   1.113 +
   1.114 +		TEllipse ellipse;
   1.115 +		ellipse.Construct(TRect(rcpy.iTl,rcpy.iTl + aSize));
   1.116 +		ellipse.SingleStep(tl,tr,bl,br);
   1.117 +		prevlev = tl.iY;
   1.118 +
   1.119 +		while (!ellipse.SingleStep(tl,tr,bl,br))
   1.120 +			{
   1.121 +			if (tl.iY == prevlev)
   1.122 +				continue;
   1.123 +
   1.124 +			tl.iX++;
   1.125 +			tr.iX += xoff - 1;
   1.126 +			bl.iX++;
   1.127 +			bl.iY += yoff;
   1.128 +			br.iX += xoff - 1;
   1.129 +			br.iY += yoff;
   1.130 +
   1.131 +			ClipFillLine(tl,tr);
   1.132 +			ClipFillLine(bl,br);
   1.133 +
   1.134 +			prevlev = tl.iY;
   1.135 +			}
   1.136 +
   1.137 +		iDevice->iDrawDevice->UpdateRegion(iClipRect);
   1.138 +		}
   1.139 +
   1.140 +	if (!draw)
   1.141 +		return;
   1.142 +
   1.143 +	if (tl.iY >= bl.iY)
   1.144 +		{
   1.145 +		tl.iY--;
   1.146 +		br.iY++;
   1.147 +		}
   1.148 +
   1.149 +	tl.iX++;
   1.150 +	tl.iY++;
   1.151 +	br.iX += xoff;
   1.152 +	br.iY += yoff;
   1.153 +
   1.154 +	RectFill(TRect(tl,br));
   1.155 +	}
   1.156 +
   1.157 +void CFbsBitGc::RoundRectOutline(const TRect& aRect,TSize aSize)
   1.158 +	{
   1.159 +	TRect rcpy(aRect);
   1.160 +	const TInt halfpenwidth = (iPenSize.iWidth + 1) >> 1;
   1.161 +	const TInt halfpenheight = (iPenSize.iWidth + 1) >> 1;
   1.162 +	rcpy.Grow(halfpenwidth,halfpenheight);
   1.163 +	AddRect(rcpy);
   1.164 +
   1.165 +	if (aRect.Width() < aSize.iWidth)
   1.166 +		aSize.iWidth = aRect.Width();
   1.167 +	if (aRect.Height() < aSize.iHeight)
   1.168 +		aSize.iHeight = aRect.Height();
   1.169 +
   1.170 +	TPoint tl,tr,bl,br;
   1.171 +	const TInt xoff = aRect.Width() - aSize.iWidth;
   1.172 +	const TInt yoff = aRect.Height() - aSize.iHeight;
   1.173 +	const TInt dotparam = iDotParam;
   1.174 +
   1.175 +	const TInt limit = iDefaultRegionPtr->Count();
   1.176 +	for (TInt count = 0; count < limit; count++)
   1.177 +		{
   1.178 +		iClipRect = (*iDefaultRegionPtr)[count];
   1.179 +		if (!iClipRect.Intersects(rcpy))
   1.180 +			continue;
   1.181 +		iClipRect.Intersection(rcpy);
   1.182 +		if (UserClipRect(iClipRect))
   1.183 +			continue;
   1.184 +
   1.185 +		iDotParam = Max(iPenSize.iWidth >> 1,iPenSize.iHeight >> 1);
   1.186 +		TInt column = aRect.iTl.iX + (aSize.iWidth >> 1);
   1.187 +		TInt lastcolumn = aRect.iTl.iX + xoff + (aSize.iWidth >> 1);
   1.188 +
   1.189 +		for (; column < lastcolumn; column++)
   1.190 +			{
   1.191 +			PenDrawClipped(TPoint(column,aRect.iTl.iY));
   1.192 +			PenDrawClipped(TPoint(column,aRect.iBr.iY - 1));
   1.193 +			iDotParam += iDotDirection;
   1.194 +			}
   1.195 +
   1.196 +		TEllipse ellipse;
   1.197 +		ellipse.Construct(TRect(aRect.iTl,aRect.iTl + aSize));
   1.198 +		while (!ellipse.SingleStep(tl,tr,bl,br))
   1.199 +			{
   1.200 +			tr.iX += xoff;
   1.201 +			bl.iY += yoff;
   1.202 +			br.iX += xoff;
   1.203 +			br.iY += yoff;
   1.204 +
   1.205 +			PenDrawClipped(tl);
   1.206 +			PenDrawClipped(tr);
   1.207 +			PenDrawClipped(bl);
   1.208 +			PenDrawClipped(br);
   1.209 +
   1.210 +			iDotParam += iDotDirection;
   1.211 +			}
   1.212 +
   1.213 +		if (tl.iY >= bl.iY)
   1.214 +			{
   1.215 +			tl.iY--;
   1.216 +			bl.iY++;
   1.217 +			}
   1.218 +
   1.219 +		bl.iY += yoff;
   1.220 +
   1.221 +		for (column = tl.iY + 1; column < bl.iY; column++)
   1.222 +			{
   1.223 +			PenDrawClipped(TPoint(aRect.iTl.iX,column));
   1.224 +			PenDrawClipped(TPoint(aRect.iBr.iX - 1,column));
   1.225 +			iDotParam += iDotDirection;
   1.226 +			}
   1.227 +
   1.228 +		iDevice->iDrawDevice->UpdateRegion(iClipRect);
   1.229 +		}
   1.230 +
   1.231 +	iDotParam = dotparam;
   1.232 +	}
   1.233 +