examples/sfexamples/GfxWorkbench/inc/CGfxDirectAccess.h

/*
Copyright (c) 2002-2011 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this
  list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
* Neither the name of Nokia Corporation nor the names of its contributors
  may be used to endorse or promote products derived from this software
  without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Description:  
*/ 
#ifndef CGFXDIRECTACCESS_H_
#define CGFXDIRECTACCESS_H_

#include <e32base.h>
#include <w32std.h>

class CDirectScreenBitmap;
struct SScreenData
        {
        TInt iDisplayMemoryAddress;
        TInt iDisplayOffsetToFirstPixel;
        TInt iDisplayXPixels;
        TInt iDisplayYPixels;
        TInt iDisplayMode;
        TInt iDisplayOffsetBetweenLines;
        TInt iDisplayBitsPerPixel;
        TBool iDisplayIsPixelOrderLandscape;
        };

class CGfxDirectAccess : public CTimer, public MDirectScreenAccess
        {
public:
        CGfxDirectAccess(RWsSession& aClient, 
                RWindow& aWindow, const TRect& aDsaRect, TBool aGcDrawMode);
        
        virtual ~CGfxDirectAccess();
        
           // Implement MDirectScreenAccess
    void Restart(RDirectScreenAccess::TTerminationReasons aReason);
    void AbortNow(RDirectScreenAccess::TTerminationReasons aReason);

    
public:
    void ConstructL();
    void StartL();

    
private:
    // Implement CTimer
    void RunL();
    void DoCancel();

private:
    void SetupScreenDataL();
    TUint8* BeginDraw();
    void EndDraw();
    void ProcessFrameWritePixels();
    void ProcessFrameGc();
    
    void LogCapsL();    

    
private:
        // Window server handling
        RWsSession& iClient;
        RWindow& iWindow;

        // DSA objects
        CDirectScreenAccess* iDirectScreenAccess;
        CDirectScreenBitmap* iDSBitmap;
        TRect   iDsaRect;
        TBool iGcDrawMode;
        TInt iFrameCounter;
        SScreenData iScreenData;
        };

#endif /*CGFXDIRECTACCESS_H_*/

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