/*

* Copyright (c) 2009 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:    Class to store physics related data in forms.

*

*/

#include "aknformphysics.h"

#include <aknphysics.h>

#include <coecntrl.h>

#include <coemain.h>

#include <eikdpage.h>

#include "akntrace.h"

// ======== MEMBER FUNCTIONS ========

// ---------------------------------------------------------------------------

// CAknFormPhysics::CAknFormPhysics

// ---------------------------------------------------------------------------

//

CAknFormPhysics::CAknFormPhysics( CEikDialogPage& aParent, 

    CAknRecordingGc& aRecordingGc ) : iParent( aParent ), 

    iRecordingGc( aRecordingGc )

    {

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::ConstructL

// ---------------------------------------------------------------------------

//

void CAknFormPhysics::ConstructL()

    {

    iPhysics = CAknPhysics::NewL( *this, &iParent );

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::NewL

// ---------------------------------------------------------------------------

//

CAknFormPhysics* CAknFormPhysics::NewL( CEikDialogPage& aParent, 

    CAknRecordingGc& aRecordingGc )

    {

    _AKNTRACE_FUNC_ENTER;

    CAknFormPhysics* self = new ( ELeave ) CAknFormPhysics( aParent, 

        aRecordingGc );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    _AKNTRACE_FUNC_EXIT;    

    return self;

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::~CAknFormPhysics

// ---------------------------------------------------------------------------

//

CAknFormPhysics::~CAknFormPhysics()

    {

    _AKNTRACE_FUNC_ENTER;

    delete iPhysics;

    _AKNTRACE_FUNC_EXIT;

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::InitPhysicsL

// ---------------------------------------------------------------------------

//

void CAknFormPhysics::InitPhysicsL( const TSize& aWorldSize, 

    const TSize& aViewSize, const TPoint& aViewCenter )

    {

    _AKNTRACE_FUNC_ENTER;

    iPhysics->InitPhysicsL( aWorldSize, aViewSize, EFalse );

    iViewCenter = aViewCenter;

    iWorldSize = aWorldSize;

    iViewSize = aViewSize;

    _AKNTRACE_FUNC_EXIT;

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::Stop

// ---------------------------------------------------------------------------

//

void CAknFormPhysics::Stop()

    {

    _AKNTRACE_FUNC_ENTER;

    iPhysics->StopPhysics();

    iPhysics->ResetFriction();

    _AKNTRACE_FUNC_EXIT;

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::StartFlick

// ---------------------------------------------------------------------------

//

TBool CAknFormPhysics::StartFlick( const TPoint& aLength, 

                                   const TTime& aStartTime )

    {

    _AKNTRACE_FUNC_ENTER;

    if (  PhysicsAllowed() )

        {

        TPoint drag( aLength );

        if ( iPhysics->StartPhysics( drag, aStartTime ) )

            {

            // reset benchmark variables

            iStartTime.HomeTime();

            iFrameCount = 0;

            return ETrue;

            }

        }

    PhysicEmulationEnded();

    _AKNTRACE_FUNC_EXIT;

    return EFalse;

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::HighlightDelay

// ---------------------------------------------------------------------------

//

TInt CAknFormPhysics::HighlightDelay() const

    {

    return iPhysics->HighlightTimeout();

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::DragThreshold

// ---------------------------------------------------------------------------

//

TInt CAknFormPhysics::DragThreshold() const

    {

    return iPhysics->DragThreshold();

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::WorldSize

// ---------------------------------------------------------------------------

//

TSize CAknFormPhysics::ViewSize() const

    {

    return iViewSize;

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::SetPanningPosition

// ---------------------------------------------------------------------------

//

void CAknFormPhysics::SetPanningPosition( const TPoint& aDelta )

    {

    _AKNTRACE_FUNC_ENTER;

    if (  PhysicsAllowed() && iPhysics )

        {

        iPhysics->RegisterPanningPosition( aDelta );

        }

    _AKNTRACE_FUNC_EXIT;

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::ViewPositionChanged

// ---------------------------------------------------------------------------

//

void CAknFormPhysics::ViewPositionChanged( const TPoint& aNewPosition,

                                           TBool aDrawNow,

                                           TUint /*aFlags*/ )

    {

    _AKNTRACE_FUNC_ENTER;

    _AKNTRACE( "The Position of aNewPosition are: ( %d, %d ) ", 

    		aNewPosition.iX, aNewPosition.iY );

    if ( !PhysicsAllowed() )

        {

        return;

        }

    TInt fps = 0;

    iViewCenter = aNewPosition;

    // benchmark / debug part

    if ( iFrameCount != -1 )

        {

        ++iFrameCount;

        TTime now;

        now.HomeTime();

        TInt64 duration = now.MicroSecondsFrom( iStartTime ).Int64();

        if ( duration > 0 )

            {

            fps = iFrameCount * 1000000 / duration;

            }

        }

    TBuf<128> msg;

    msg.Format( _L( "%dfps" ), fps );

    iParent.ScrollCacheByPixels( iViewCenter.iY, msg, aDrawNow );

    _AKNTRACE_FUNC_EXIT;

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::PhysicEmulationEnded

// ---------------------------------------------------------------------------

//

void CAknFormPhysics::PhysicEmulationEnded()

    {

    _AKNTRACE_FUNC_ENTER;

    iParent.Synchronize();

    iFrameCount = -1;

    _AKNTRACE_FUNC_EXIT;

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::ViewPosition

// ---------------------------------------------------------------------------

//

TPoint CAknFormPhysics::ViewPosition() const

    {

    return iViewCenter;

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::CanBeStopped

// ---------------------------------------------------------------------------

//

TBool CAknFormPhysics::CanBeStopped() const

    {

    return iPhysics->OngoingPhysicsAction() != 

        CAknPhysics::EAknPhysicsActionBouncing;

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::OngoingPhysicsAction

// ---------------------------------------------------------------------------

//

TInt CAknFormPhysics::OngoingPhysicsAction() const

    {

    return iPhysics->OngoingPhysicsAction();

    }

/// ---------------------------------------------------------------------------

// CAknFormPhysics::ViewTopY

// ---------------------------------------------------------------------------

//

TInt CAknFormPhysics::ViewTopY() const

    {

    return iViewCenter.iY - iParent.Size().iHeight / 2;

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::ViewDistance

// ---------------------------------------------------------------------------

//

TInt CAknFormPhysics::ViewCenterDistance() const

    {

    return iParent.Size().iHeight / 2;

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::SetViewCenter

// ---------------------------------------------------------------------------

//

void CAknFormPhysics::SetViewCenter( const TPoint& aPosition )

    {

    iViewCenter = aPosition;

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::ViewCenter

// ---------------------------------------------------------------------------

//

TPoint CAknFormPhysics::ViewCenter() const

    {

    return iViewCenter;

    }

// ---------------------------------------------------------------------------

// CAknFormPhysics::PhysicsAllowed

// ---------------------------------------------------------------------------

//

TBool CAknFormPhysics::PhysicsAllowed() const

    {

    return ETrue;

    }