1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/graphics/windowing/windowserver/inc/Graphics/wsscreendevice.h	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,79 @@
     1.4 +// Copyright (c) 2008-2009 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 +// Interface for Render Stage Screen Abstraction
    1.18 +// 
    1.19 +//
    1.20 +
    1.21 +/**
    1.22 + @publishedPartner
    1.23 + @prototype
    1.24 +*/
    1.25 +
    1.26 +#ifndef WSSCREENDEVICE_H
    1.27 +#define WSSCREENDEVICE_H
    1.28 +
    1.29 +#include <w32std.h>
    1.30 +#include <graphics/wsgraphicdrawerinterface.h>
    1.31 +
    1.32 +/** Render Stage Palette support.
    1.33 +
    1.34 +This interface is intended to be optionally provided by a Render Stage
    1.35 +when the pixel target can provide a Colour Palette.  Not all pixel targets have
    1.36 +this feature, for example OpenVG only targets.
    1.37 +@publishedPartner
    1.38 +@prototype
    1.39 +*/
    1.40 +class MWsPalette : public MWsObjectProvider
    1.41 +	{
    1.42 +public:
    1.43 +	DECLARE_WS_TYPE_ID(KMWsPalette)
    1.44 +	virtual void PaletteAttributes(TBool& aModifiable,TInt& aNumEntries) const = 0;
    1.45 +	virtual TInt GetPalette(CPalette*& aPalette) const = 0;
    1.46 +	virtual TInt SetCustomPalette(const CPalette* aPalette) = 0;
    1.47 +	};
    1.48 +
    1.49 +
    1.50 +/** Render Stage Screen Device abstraction.
    1.51 +
    1.52 +Render Stages provide this interface as an abstraction of the target screen.
    1.53 +The screen may not be pixel based, in which case read back of pixel data may
    1.54 +not be a reflection of what appears on the screen.  The screen might also only
    1.55 +be partially readable, for example external video surfaces may be blanked out
    1.56 +when a read back is done.  The intention of the CopyScreenToBitmap methods is
    1.57 +to provide a means to obtain a snapshot of the entire screen for architectures
    1.58 +where a composition of the screen can be done once followed by a read back
    1.59 +of the entire screen, as opposed to servicing a sequence of GetScanLine calls
    1.60 +which may be prohibitively expensive.
    1.61 +
    1.62 +@publishedPartner
    1.63 +@prototype
    1.64 +*/
    1.65 +class MWsScreenDevice : public MWsObjectProvider
    1.66 +	{
    1.67 +public:
    1.68 +	DECLARE_WS_TYPE_ID(KMWsScreenDevice)
    1.69 +
    1.70 +	virtual TInt ScreenNumber() const = 0;
    1.71 +	virtual TDisplayMode DisplayMode() const = 0;
    1.72 +	virtual TSize SizeInPixels() const = 0;
    1.73 +	virtual TSize SizeInTwips() const = 0;
    1.74 +	virtual TRect PointerRect() const = 0;
    1.75 +	virtual void GetPixel(TRgb& aColor,const TPoint& aPixel) const = 0;
    1.76 +	virtual void GetScanLine(TDes8& aScanLine,const TPoint& aStartPixel,TInt aPixelLength, TDisplayMode aDispMode) const = 0;
    1.77 +	virtual TBool RectCompare(const TRect& aRect1, const TRect& aRect2) const = 0;
    1.78 +	virtual void CopyScreenToBitmapL(CFbsBitmap* aBitmap, const TRect& aRect) const = 0;
    1.79 +	virtual void ClearDisplay(TRgb aBackColor)=0;
    1.80 +	};
    1.81 +
    1.82 +#endif // WSSCREENDEVICE_H