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// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include <bitdev.h>
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#include <bitstd.h>
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#include <banddev.h>
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const TInt KBandSizeInBytes=0x8000; // 32k
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EXPORT_C CBandedDevice::~CBandedDevice()
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{
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delete iClearGc;
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iClearGc=NULL;
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delete iBandBitmapDevice;
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iBandBitmapDevice=NULL;
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delete iBandBitmap;
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iBandBitmap=NULL;
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}
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EXPORT_C CBandedDevice* CBandedDevice::NewL(TRect aRectInPixels,TSize aKPixelSizeInTwips,TDisplayMode aDisplayMode,TBandingDirection aBandingDirection,TInt aScanLinesPerBand)
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{
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CBandedDevice* device=new(ELeave) CBandedDevice(aRectInPixels,aBandingDirection,aScanLinesPerBand);
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CleanupStack::PushL(device);
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device->ConstructL(aDisplayMode,aKPixelSizeInTwips);
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CleanupStack::Pop();
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return device;
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}
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EXPORT_C TInt CBandedDevice::HorizontalTwipsToPixels(TInt aTwips) const
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{
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return iBandBitmapDevice->HorizontalTwipsToPixels(aTwips);
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}
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EXPORT_C TInt CBandedDevice::VerticalTwipsToPixels(TInt aTwips) const
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{
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return iBandBitmapDevice->VerticalTwipsToPixels(aTwips);
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}
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EXPORT_C TInt CBandedDevice::HorizontalPixelsToTwips(TInt aPixels) const
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{
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return iBandBitmapDevice->HorizontalPixelsToTwips(aPixels);
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}
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EXPORT_C TInt CBandedDevice::VerticalPixelsToTwips(TInt aPixels) const
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{
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return iBandBitmapDevice->VerticalPixelsToTwips(aPixels);
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}
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/** Creates a font from those available in the printer device's
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typeface store that most closely matches a font specification.
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When the font is no longer needed, call ReleaseFont().
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This function is replaced by GetNearestFontToDesignHeightInTwips()
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@param aFont On return, points to the font which most closely matches the
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specified font.
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@param aFontSpec An absolute font specification. Its iHeight member is
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interpreted as being in twips.
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@return KErrNone if successful; otherwise, another one of the system-wide error
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codes.
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@deprecated */
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EXPORT_C TInt CBandedDevice::GetNearestFontInTwips(CFont*& aFont, const TFontSpec& aFontSpec)
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{
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return GetNearestFontToDesignHeightInTwips(aFont, aFontSpec);
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}
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/** Creates a font from those available in the printer device's
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typeface store that most closely matches a font specification.
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When the font is no longer needed, call ReleaseFont().
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This function replaces GetNearestFontInTwips()
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@param aFont On return, points to the font which most closely matches the
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specified font.
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@param aFontSpec An absolute font specification. Its iHeight member is
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interpreted as being in twips.
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@return KErrNone if successful; otherwise, another one of the system-wide error
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codes. */
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EXPORT_C TInt CBandedDevice::GetNearestFontToDesignHeightInTwips(CFont*& aFont, const TFontSpec& aFontSpec)
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{
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return iBandBitmapDevice->GetNearestFontToDesignHeightInTwips(aFont, aFontSpec);
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}
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/** This call is defined because it had to be - it appeared as an abstract virtual in
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the base class. But it should never actually get called for this class. */
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EXPORT_C TInt CBandedDevice::GetNearestFontToMaxHeightInTwips(CFont*& /*aFont*/, const TFontSpec& /*aFontSpec*/, TInt /*aMaxHeight*/)
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{
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return KErrNotSupported;
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}
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EXPORT_C void CBandedDevice::ReleaseFont(CFont* aFont)
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{
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iBandBitmapDevice->ReleaseFont(aFont);
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}
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EXPORT_C TDisplayMode CBandedDevice::DisplayMode() const
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{
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return iBandBitmapDevice->DisplayMode();
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}
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EXPORT_C TSize CBandedDevice::SizeInPixels() const
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{
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return iFullRectInPixels.Size();
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}
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EXPORT_C TSize CBandedDevice::SizeInTwips() const
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{
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TSize size=SizeInPixels();
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size.iWidth=HorizontalPixelsToTwips(size.iWidth);
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size.iHeight=VerticalPixelsToTwips(size.iHeight);
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return size;
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}
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EXPORT_C TInt CBandedDevice::CreateContext(CGraphicsContext*& aGC)
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{
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TInt ret=iBandBitmapDevice->CreateContext(aGC);
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if (ret==KErrNone)
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{
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TPoint origin=FullOriginToBandOrigin(TPoint(0,0));
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aGC->SetOrigin(origin);
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}
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return ret;
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}
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EXPORT_C TInt CBandedDevice::NumTypefaces() const
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{
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return iBandBitmapDevice->NumTypefaces();
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}
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EXPORT_C void CBandedDevice::TypefaceSupport(TTypefaceSupport& aTypefaceSupport,TInt aTypefaceIndex) const
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{
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iBandBitmapDevice->TypefaceSupport(aTypefaceSupport,aTypefaceIndex);
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}
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EXPORT_C TInt CBandedDevice::FontHeightInTwips(TInt aTypefaceIndex,TInt aHeightIndex) const
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{
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return iBandBitmapDevice->FontHeightInTwips(aTypefaceIndex,aHeightIndex);
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}
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EXPORT_C void CBandedDevice::PaletteAttributes(TBool& aModifiable,TInt& aNumEntries) const
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{
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iBandBitmapDevice->PaletteAttributes(aModifiable,aNumEntries);
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}
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EXPORT_C void CBandedDevice::SetPalette(CPalette* aPalette)
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{
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iBandBitmapDevice->SetPalette(aPalette);
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}
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EXPORT_C TInt CBandedDevice::GetPalette(CPalette*& aPalette) const
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{
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return iBandBitmapDevice->GetPalette(aPalette);
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}
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EXPORT_C TInt CBandedDevice::NumBands() const
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{
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TInt numbands;
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if ((iBandingDirection==EBandingTopToBottom) || (iBandingDirection==EBandingBottomToTop))
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numbands = (iFullRectInPixels.Size().iHeight/iScanLinesPerBand)+1;
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else
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numbands = (iFullRectInPixels.Size().iWidth/iScanLinesPerBand)+1;
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return numbands;
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}
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EXPORT_C TInt CBandedDevice::NextBand()
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{
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iBandIndex++;
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if (iBandIndex==NumBands())
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iBandIndex=0;
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iClearGc->Clear();
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return iBandIndex;
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}
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EXPORT_C TRect CBandedDevice::BandRect() const
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{
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TRect bandrect;
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if (iBandingDirection==EBandingTopToBottom)
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{
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bandrect.iTl.iX=iFullRectInPixels.iTl.iX;
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bandrect.iTl.iY=iFullRectInPixels.iTl.iY+(iBandIndex*iScanLinesPerBand);
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bandrect.iBr.iX=iFullRectInPixels.iBr.iX;
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bandrect.iBr.iY=bandrect.iTl.iY+iScanLinesPerBand;
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if (bandrect.iBr.iY>iFullRectInPixels.iBr.iY)
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bandrect.iBr.iY=iFullRectInPixels.iBr.iY;
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}
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else if (iBandingDirection==EBandingBottomToTop)
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{
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bandrect.iBr.iX=iFullRectInPixels.iBr.iX;
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bandrect.iBr.iY=iFullRectInPixels.iBr.iY-(iBandIndex*iScanLinesPerBand);
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bandrect.iTl.iX=iFullRectInPixels.iTl.iX;
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bandrect.iTl.iY=bandrect.iBr.iY-iScanLinesPerBand;
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if (bandrect.iTl.iY<iFullRectInPixels.iTl.iY)
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bandrect.iTl.iY=iFullRectInPixels.iTl.iY;
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}
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else if (iBandingDirection==EBandingLeftToRight)
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{
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bandrect.iTl.iX=iFullRectInPixels.iTl.iX+(iBandIndex*iScanLinesPerBand);
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bandrect.iTl.iY=iFullRectInPixels.iTl.iY;
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bandrect.iBr.iX=bandrect.iTl.iX+iScanLinesPerBand;
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bandrect.iBr.iY=iFullRectInPixels.iBr.iY;
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if (bandrect.iBr.iX>iFullRectInPixels.iBr.iX)
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bandrect.iBr.iX=iFullRectInPixels.iBr.iX;
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}
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else if (iBandingDirection==EBandingRightToLeft)
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{
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bandrect.iBr.iX=iFullRectInPixels.iBr.iX-(iBandIndex*iScanLinesPerBand);
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bandrect.iBr.iY=iFullRectInPixels.iBr.iY;
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bandrect.iTl.iX=bandrect.iBr.iX-iScanLinesPerBand;
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bandrect.iTl.iY=iFullRectInPixels.iTl.iY;
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if (bandrect.iTl.iX<iFullRectInPixels.iTl.iX)
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bandrect.iTl.iX=iFullRectInPixels.iTl.iX;
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}
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return bandrect;
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}
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EXPORT_C TPoint CBandedDevice::FullOriginToBandOrigin(const TPoint& aPoint) const
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{
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TRect rect=BandRect();
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return aPoint-rect.iTl;
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}
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EXPORT_C void CBandedDevice::Reset()
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{
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iBandIndex=-1;
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}
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CBandedDevice::CBandedDevice(TRect aRectInPixels,TBandingDirection aBandingDirection,TInt aScanLinesPerBand):
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iFullRectInPixels(aRectInPixels),
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iScanLinesPerBand(aScanLinesPerBand),
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iBandIndex(-1),
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iBandBitmap(NULL),
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iBandBitmapDevice(NULL),
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iBandingDirection(aBandingDirection)
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{
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}
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void CBandedDevice::ConstructL(TDisplayMode aDisplayMode,TSize aKPixelSizeInTwips)
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{
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iBandBitmap=new(ELeave) CFbsBitmap;
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if ((iBandingDirection==EBandingTopToBottom) || (iBandingDirection==EBandingBottomToTop))
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{
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TInt widthinpixels=iFullRectInPixels.Size().iWidth;
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if (!iScanLinesPerBand)
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iScanLinesPerBand=KBandSizeInBytes/(CFbsBitmap::ScanLineLength(widthinpixels,aDisplayMode));
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iScanLinesPerBand&=~1;
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User::LeaveIfError(iBandBitmap->Create(TSize(widthinpixels,iScanLinesPerBand),aDisplayMode));
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TSize sizeintwips;
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sizeintwips.iWidth=(aKPixelSizeInTwips.iWidth*widthinpixels)/1000;
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sizeintwips.iHeight=(aKPixelSizeInTwips.iHeight*iScanLinesPerBand)/1000;
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iBandBitmap->SetSizeInTwips(sizeintwips);
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}
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else
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{
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TInt heightinpixels=iFullRectInPixels.Size().iHeight;
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if (!iScanLinesPerBand)
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iScanLinesPerBand=KBandSizeInBytes/(CFbsBitmap::ScanLineLength(heightinpixels,aDisplayMode));
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iScanLinesPerBand&=~1;
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User::LeaveIfError(iBandBitmap->Create(TSize(iScanLinesPerBand,heightinpixels),aDisplayMode));
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TSize sizeintwips;
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sizeintwips.iWidth=(aKPixelSizeInTwips.iWidth*iScanLinesPerBand)/1000;
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275 |
sizeintwips.iHeight=(aKPixelSizeInTwips.iHeight*heightinpixels)/1000;
|
|
sl@0
|
276 |
iBandBitmap->SetSizeInTwips(sizeintwips);
|
|
sl@0
|
277 |
}
|
|
sl@0
|
278 |
iBandBitmapDevice=CFbsBitmapDevice::NewL(iBandBitmap);
|
|
sl@0
|
279 |
User::LeaveIfError(iBandBitmapDevice->CreateContext((CGraphicsContext*&) iClearGc));
|
|
sl@0
|
280 |
}
|
|
sl@0
|
281 |
|