/*

* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#ifndef LCDWINDOWSURFACE_H

#define LCDWINDOWSURFACE_H

#include <w32std.h>

#include "LcdSurface.h"

typedef CFbsBitGc::TGraphicsOrientation TOrientation;

/**

 * Coordinate transform from logical device coords to

 * phyical device coords is determined by the scale,

 * origin and orientation.

 */

struct TCoordinateSystem

{

    TSize        iSize;

    TSize        iScale;

    TPoint       iOrigin;

    TOrientation iOrientation;

};

NONSHARABLE_CLASS(CLcdWindowSurface)

        : public CLcdSurface

        , private MDirectContent

        , private MDirectScreenAccess

{

public:

    /* We make the CONE dependency explicit here by requiring a CCoeControl for the window */

    static CLcdWindowSurface* NewL(CCoeControl& aWindow, MDirectContainer& aContainer, TBool aUpdate);

    ~CLcdWindowSurface();

    RWindow*     Window() const;

    void         GetCoordinateSystem(TCoordinateSystem& aCoords) const;

    virtual TSurfaceType Type() const;

    virtual void Update(const TRect& aRect);

    virtual void Begin(TAcceleratedBitmapInfo& aInfo, TBitmapLockCount& aCount);

    virtual void End(TBitmapLockCount& aCount);

    virtual TRect Bounds() const;

    virtual RRegion* VisibleRegion() const;

    virtual CBitmapContext* Context() const;

    virtual TImageType ImageType() const;

private:

    virtual void MdcContainerWindowRectChanged(const TRect& /*aRect*/) {};

    /**

    Notify content that container visiblity has changed. The content must not

    be displayed when it's container is invisible.

    @param "aVisible" ETrue if the container is visible, EFalse if it is invisible.

    */

    virtual void MdcContainerVisibilityChanged(TBool aVisible);

    /**

    Notify content that the container bounds have changed.

    @param "aRect" Maximum area the content can occupy in screen co-ordinates.

    The content should be clipped to this area.

    */

    virtual void MdcContentBoundsChanged(const TRect& aRect);

    /**

    Notify content that its display area has changed.

    This should only be called when the content is displayed on an Item.

    @param "aDisplayRect" Display area in Item co-ordinates.

    @param "aScreenRect" Display area in screen co-ordinates.

    */

    virtual void MdcItemContentRectChanged(const TRect& aContentRect,const TRect& aScreenRect);

    virtual void MdcContainerDestroyed();

    /**

     * Notify content that any drawing

     * via direct screen access must be aborted

     */

    virtual void MdcAbortDSA();

    /**

     * Allow the content to draw

     * via direct screen access after MdcAbortDSA

     */

    virtual void MdcResumeDSA();

private:

    virtual void AbortNow(RDirectScreenAccess::TTerminationReasons);

    virtual void Restart(RDirectScreenAccess::TTerminationReasons);

private:

    CLcdWindowSurface(MDirectContainer& aContainer, TBool aUpdate);

    void ConstructL(CCoeControl& aWindow);

    void ActivateL(RWindow* aWindow);

    void Deactivate();

    TBool Start();

    TInt DoUpdate();

private:

    MDirectContainer*   iContainer;

    RWsSession&         iWsSession;

    CWsScreenDevice&    iWsDevice;

    TBool               iUpdate;

    TImageType          iImageType;

    RWindow*            iWsWindow;

    CWindowGc*          iWsContext;     // backup context

    CDirectScreenAccess* iWsAccess;     // primary context, region and update device

    TAcceleratedBitmapInfo iScreen;

    TCoordinateSystem iScreenCoords;

    TBool iEnabled;

    TBool iStarted;

    TBool iVisible;

    TRect iBounds;

    RRegion iEmptyRegion;

    RRegion iUpdateRegion;

};

#endif // LCDWINDOWSURFACE_H