/*

* Copyright (c) 2006 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:   factory for alf built-in hitchcock compenents

*

*/

#include <e32cmn.h>

#include <uiacceltk/HuiControl.h>

#include <uiacceltk/HuiVisual.h>

#include <uiacceltk/HuiLayout.h>

#include <uiacceltk/HuiTexture.h>

#include <uiacceltk/HuiEvent.h>

#include <uiacceltk/HuiDisplay.h>

#include <uiacceltk/HuiUtil.h>

#include "alf/alfvisualhandlers.h"

#include "alf/alflayouthandlers.h"

#include "alf/alfbrushhandlers.h"

#include "alftextstylehandlers.h"

#include "alf/alfappsrvsessionbase.h"

#include "alfstaticfactory.h"

#include "alf/alfconstants.h"

#include "alfmappingfunctionhandlers.h"

#include "alf/alfmetric.h"

CHuiVisual* FindLastHittingChild( const CHuiVisual& aParentVisual, 

                                  const TPoint& aDisplayPoint )

    {

    // If we want that the pointer event are passed only to the visuals which 

    // (effective) opacity is greater than 50%, this would be the place to 

    // implement it.

    for ( TInt i = aParentVisual.Count() - 1 ; i >= 0 ; i-- )

        {

        // DisplayRect() returns the current value of the rectange. If the pointer

        // hit needs to be compared to the target rect, change this function call

        // from DisplayRect() into DisplayRectTarget()

        const TRect rect =  aParentVisual.Visual( i ).DisplayRect();

        if ( rect.Contains( aDisplayPoint ) )

            {

            CHuiVisual* leaf = 

                FindLastHittingChild( aParentVisual.Visual( i ), aDisplayPoint );

            return leaf ? leaf : &aParentVisual.Visual( i );

            }

        }

    return NULL;

    }

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

// Control, private so declaration directly here

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

NONSHARABLE_CLASS(CAlfControl2): public CHuiControl

    {

public:

    CAlfControl2(CHuiEnv& aSharedEnv, CAlfControl2** ptr, CAlfAppSrvSessionBase* aSession):

        CHuiControl(aSharedEnv),

        iPtr(ptr),

        iSession(aSession)

        {}

    TBool OfferEventL(const THuiEvent& aEvent)

        {

        if ( aEvent.IsPointerEvent() )

            {

            // Update event coordinates to match the "client rect" of the application

            THuiEvent eventWithLocalCoordinates(aEvent); 

            // Set the iParentPosition coordinates to be ralative to the 

            // visual aread of the display i.e  the root visuals. 

            const TPoint clientDrawingAreaTl = iSession->ClientDrawingArea().iTl;

            eventWithLocalCoordinates.iPointerEvent.iParentPosition -= clientDrawingAreaTl;

            if ( aEvent.Visual() )

                {

                // If visual is found, move the iPosition coordinates to be relative to the

                // visual area.

                const THuiRealRect realVisualArea = aEvent.Visual()->DisplayRect();

                const TPoint intVisualTl( 

                    HUI_ROUND_FLOAT_TO_INT( realVisualArea.iTl.iX ),

                    HUI_ROUND_FLOAT_TO_INT( realVisualArea.iTl.iY ) );

                eventWithLocalCoordinates.iPointerEvent.iPosition -= intVisualTl;

                }

            else

                {

                // If there is no accociated visual, set iPosotion coordinates to be relative to

                // the display visual area.

                eventWithLocalCoordinates.iPointerEvent.iPosition -= clientDrawingAreaTl;

                }

            TBool isLongTap = aEvent.iPointerEvent.iType == TPointerEvent::EButtonRepeat;

            if ( isLongTap )

                {

                iSession->StartPointerHandling();

                }

            iSession->HandleEventL(this, aEvent.Visual() , eventWithLocalCoordinates);

            if ( isLongTap )

                {

                iSession->FlushPointerHandling();

                }

            }

        return EFalse; // let env offer event to all ctrls it hits

        }

    ~CAlfControl2()

        {

        if ( Env().DisplayCount() )

            {

            CHuiDisplay& disp = Env().PrimaryDisplay(); // assume one display

            disp.Roster().Observers(EHuiInputPointerDrag).RemoveIfFound(*this);

            disp.Roster().Observers(EHuiInputPointerLongTap).RemoveIfFound(*this);

            disp.Roster().Observers(EHuiInputPointerUnhandled).RemoveIfFound(*this);

            }

        }

private:

    CAlfControl2** iPtr;

    CAlfAppSrvSessionBase* iSession;

    };

NONSHARABLE_CLASS(CAlfControlHandler): public CBase, public MAlfExtension

    {

public:

    static MAlfExtension* NewL(const TDesC8& aInputBuffer, CHuiEnv& aSharedEnv, CAlfAppSrvSessionBase* aSession );

private:    

    void Release();

    TAny* GetInterface(const THuiInterfaceSupport& aInterface);

    void HandleCmdL(TInt aCommandId, const TDesC8& aInputBuffer, TDes8& aResponse);    

    CAlfControl2* iControl;

    ~CAlfControlHandler() 

        if (iControl && !iControl->ControlGroup())

            {

            delete iControl; 

            }

        }

    };

MAlfExtension* CAlfControlHandler::NewL(const TDesC8& /*aInputBuffer*/, CHuiEnv& aSharedEnv, CAlfAppSrvSessionBase* aSession)

    {

    CAlfControlHandler* me = new (ELeave) CAlfControlHandler();

    CleanupStack::PushL(me);

    me->iControl = new (ELeave) CAlfControl2(aSharedEnv, &me->iControl, aSession);

    CleanupStack::Pop();

    return me;

    }

void CAlfControlHandler::Release()

    {

    delete this;

    }

TAny* CAlfControlHandler::GetInterface(const THuiInterfaceSupport& aInterface)

    {

    switch (aInterface)

        {

        case EHuiObjectTypeControl:

            return static_cast<CHuiControl*>(iControl);

        case EHuiInterfaceVisualOwner:

            return static_cast<MHuiVisualOwner*>(iControl);

        default:

            return 0;

        }

    }

void CAlfControlHandler::HandleCmdL(TInt /*aCommandId*/, const TDesC8& /*aInputBuffer*/, TDes8& /*aResponse*/)

    {

    }

MAlfExtension* TAlfFixedFactory::CreateExtensionL(const TInt aObjectId, const TDesC8& aInitialParams, MAlfInterfaceProvider& aResolver )

    {

    MAlfExtension* result = 0;

    switch(aObjectId)

        {

        case EAlfCntrlCreate:

            {

            result = CAlfControlHandler::NewL(aInitialParams, *aResolver.SharedHuiEnv(), static_cast<CAlfAppSrvSessionBase*>(&aResolver));

            break;

            }

        case EAlfVisualCreate:

        case EAlfTextVisualCreate:

        case EAlfLCTTextVisualCreate:

        case EAlfLayoutCreate:

        case EAlfAnchorLayoutCreate:

        case EAlfLCTAnchorLayoutCreate:

        case EAlfDeckLayoutCreate:

        case EAlfFlowLayoutCreate:

        case EAlfCurvePathLayoutCreate:

        case EAlfGridLayoutCreate:

        case EAlfLCTGridLayoutCreate:

        case EAlfViewportLayoutCreate:

        case EAlfImageVisualCreate:

        case EAlfLineVisualCreate:

        case EAlfCanvasVisualCreate:

            {

            TInt2* params = (TInt2*)aInitialParams.Ptr();

            CHuiControl* owner = 0;

            CHuiLayout* parentLayout = 0;

            if (!params->iInt1)

                {

                User::Leave(KErrArgument);

                }

            else

                { // currently we must use concrete owner as interface does not provide means to 

                  // transfer ownership

                owner = (CHuiControl*) aResolver.GetInterfaceL(EHuiObjectTypeControl, params->iInt1 );    

                } 

            if (params->iInt2) // not compulsory

                {

                parentLayout = (CHuiLayout*) aResolver.GetInterfaceL(EHuiObjectTypeLayout, params->iInt2 ); 

                }

            if (aObjectId == EAlfVisualCreate)

                result = CAlfVisualHandler::NewL(aResolver, owner, parentLayout);

            else if (aObjectId == EAlfTextVisualCreate)

                result = CAlfTextVisualHandler::NewL(aResolver, owner, parentLayout);

            else if (aObjectId == EAlfLCTTextVisualCreate)

                result = CAlfLCTTextVisualHandler::NewL(aResolver, owner, parentLayout);

            else if (aObjectId == EAlfImageVisualCreate)

                result = CAlfImageVisualHandler::NewL(aResolver, owner, parentLayout);

            else if (aObjectId ==EAlfLayoutCreate)

                result = CAlfLayoutHandler::NewL(aResolver, owner, parentLayout);

            else if (aObjectId ==EAlfAnchorLayoutCreate)

                result = CAlfAnchorLayoutHandler::NewL(aResolver, owner, parentLayout);            

            else if (aObjectId ==EAlfLCTAnchorLayoutCreate)

                result = CAlfLCTAnchorLayoutHandler::NewL(aResolver, owner, parentLayout);            

            else if (aObjectId ==EAlfGridLayoutCreate)

                result = CAlfGridLayoutHandler::NewL(aResolver, owner, parentLayout);

            else if (aObjectId ==EAlfLCTGridLayoutCreate)

                result = CAlfLCTGridLayoutHandler::NewL(aResolver, owner, parentLayout);

            else if (aObjectId ==EAlfDeckLayoutCreate)

                result = CAlfDeckLayoutHandler::NewL(aResolver, owner, parentLayout);

            else if (aObjectId ==EAlfFlowLayoutCreate)

                result = CAlfFlowLayoutHandler::NewL(aResolver, owner, parentLayout);

            else if (aObjectId ==EAlfViewportLayoutCreate)

                result = CAlfViewportLayoutHandler::NewL(aResolver, owner, parentLayout);                        

            else if (aObjectId ==EAlfCurvePathLayoutCreate)

                result = CAlfCurvePathLayoutHandler::NewL(aResolver, owner, parentLayout);

            else if (aObjectId ==EAlfLineVisualCreate)

                result = CAlfLineVisualHandler::NewL(aResolver, owner, parentLayout);

            else if (aObjectId ==EAlfCanvasVisualCreate)

                result = CAlfCanvasVisualHandler::NewL(aResolver, owner, parentLayout);

            ASSERT(result); // missing obejct would be clear implementation error

            break;

            }

        case EAlfMeshVisualCreate:

            {

            TInt3* params = (TInt3*)aInitialParams.Ptr();

            CHuiControl* owner = 0;

            THuiMeshType type = EHuiMeshTypeProcedural;

            CHuiLayout* parentLayout = 0;

            if (!params->iInt1)

                {

                User::Leave(KErrArgument);

                }

            else

                { // currently we must use concrete owner as interface does not provide means to 

                  // transfer ownership

                owner = (CHuiControl*) aResolver.GetInterfaceL(EHuiObjectTypeControl, params->iInt1 );    

                }

            if (params->iInt2) // not compulsory

                {

                parentLayout = (CHuiLayout*) aResolver.GetInterfaceL(EHuiObjectTypeLayout, params->iInt2 ); 

                }

            result = CAlfMeshVisualHandler::NewL(aResolver, owner, type, parentLayout);  

            ASSERT(result); // missing obejct would be clear implementation error            

            break;

            }

        case EAlfBorderBrushCreate:

            {

            TAlfCreateBorderBrushParams* params = (TAlfCreateBorderBrushParams*)aInitialParams.Ptr();

            result = CAlfBorderBrushHandler::NewL(

                aResolver,

                params->iThicknessWidth,

                params->iThicknessHeight,

                params->iEdgeOffsetX,

                params->iEdgeOffsetY );

            }

            break;   

        case EAlfBorderBrushCreateMetric:

            {

            TAlfCreateBorderBrushMetricParams* params = (TAlfCreateBorderBrushMetricParams*)aInitialParams.Ptr();

            result = CAlfBorderBrushHandler::NewL(

                aResolver,

                params->iThickness,

                params->iEdgeOffset );

            }

            break;   

        case EAlfImageBrushCreate:

            {

            TAlfImageBrushParams* params = (TAlfImageBrushParams*)aInitialParams.Ptr();

            MHuiTexture* texture = reinterpret_cast<MHuiTexture*> (params->iTextureHandle);            

            result = CAlfImageBrushHandler::NewL(aResolver, THuiImage(*texture));

            }

            break;  

        case EAlfShadowBorderBrushCreate:

            {

            TInt* params = (TInt*)aInitialParams.Ptr();

            result = CAlfShadowBorderBrushHandler::NewL(aResolver, *params);

            break;

            }

        case EAlfShadowBorderBrushCreateMetric:

            {

            TAlfMetric* params = (TAlfMetric*)aInitialParams.Ptr();

            result = CAlfShadowBorderBrushHandler::NewL(aResolver, *params);

            break;

            }

        case EAlfDropShadowBrushCreate:

            {

            TInt* params = (TInt*)aInitialParams.Ptr();

            result = CAlfDropShadowBrushHandler::NewL(aResolver, *params);

            break;

            }

        case EAlfDropShadowBrushCreateMetric:

            {

            TAlfMetric* params = (TAlfMetric*)aInitialParams.Ptr();

            result = CAlfDropShadowBrushHandler::NewL(aResolver, *params);

            break;

            }

        case EAlfGradientBrushCreate:

            {

            result = CAlfGradientBrushHandler::NewL( aResolver );

            break;

            }

        case EAlfFrameBrushCreate:

            {

            TAlfFrameBrushParams* params = (TAlfFrameBrushParams*)aInitialParams.Ptr();

            result = CAlfFrameBrushHandler::NewL(aResolver, params->iFrameIID, params->iEdgeOffsetX, params->iEdgeOffsetY);

            }

            break;  

        case EAlfFrameBrushCreateMetric:

            {

            TAlfFrameBrushMetricParams* params = (TAlfFrameBrushMetricParams*)aInitialParams.Ptr();

            result = CAlfFrameBrushHandler::NewL(aResolver, params->iFrameIID, params->iEdgeOffset);

            }

            break;  

        case EAlfFrameBrushCreateImage:

            {

            TAlfFrameBrushImageParams* params = (TAlfFrameBrushImageParams*)aInitialParams.Ptr();

            // Todo: is is safe enough to handle textures as direct casts..

        	TInt handle = params->iImage.iTextureHandle;

        	MHuiTexture* texture = reinterpret_cast<MHuiTexture*>(handle);

            THuiImage huiImage;

            if (texture)

                {

                huiImage = THuiImage(*texture, 

                    params->iImage.iTl.iX.ValueNow(),

                    params->iImage.iTl.iY.ValueNow(),

                    params->iImage.iBr.iX.ValueNow(),

                    params->iImage.iBr.iY.ValueNow());    

    	        // We take transition time from one, assuming it is same for everyone.

    	        TInt transitionTime = params->iImage.iBr.iY.TimeToTargetinMilliSeconds();

    	        huiImage.SetTexCoords(params->iImage.iTl.iX.Target(),

    	            params->iImage.iTl.iY.Target(),

    	            params->iImage.iBr.iX.Target(),

    	            params->iImage.iBr.iY.Target(),

    	            transitionTime );

                }

            result = CAlfFrameBrushHandler::NewL(aResolver, huiImage, params->iEdgeOffset);

            }

            break;  

        case EAlfMappingFunctionConstantCreate:

            {

            TReal32* params = (TReal32*)aInitialParams.Ptr();

            result = new (ELeave) TAlfConstantMappingFunctionHandler(

                aResolver,

                *params );

            break;

            }

        case EAlfMappingFunctionLinearCreate:

            {

            TReal2* params = (TReal2*)aInitialParams.Ptr();

            result = new (ELeave) TAlfLinearMappingFunctionHandler(

                aResolver,

                params->iReal1,

                params->iReal2 );

            break;

            }

        case EAlfMappingFunctionSineCreate:

            {

            TReal2* params = (TReal2*)aInitialParams.Ptr();

            result = new (ELeave) TAlfSineMappingFunctionHandler(

                aResolver,

                params->iReal1,

                params->iReal2 );

            break;

            }

        case EAlfMappingFunctionCosineCreate:

            {

            TReal2* params = (TReal2*)aInitialParams.Ptr();

            result = new (ELeave) TAlfCosineMappingFunctionHandler(

                aResolver,

                params->iReal1,

                params->iReal2 );

            break;

            }

        case EAlfMappingFunctionAverageCreate:

            {

            TInt2* params = (TInt2*)aInitialParams.Ptr();

            MHuiMappingFunction* func1 = NULL;

            MHuiMappingFunction* func2 = NULL;

            if ( params->iInt1 )

                {

                func1 = (MHuiMappingFunction*) aResolver.GetInterfaceL(EHuiInterfaceMappingFunction, params->iInt1 );

                }

            if ( params->iInt2 )

                {

                func2 = (MHuiMappingFunction*) aResolver.GetInterfaceL(EHuiInterfaceMappingFunction, params->iInt2 );

                }

            result = new (ELeave) TAlfAverageMappingFunctionHandler(

                aResolver,

                func1,

                func2

                );

            }

            break;

        case EAlfCurvePathCreate:

            {

            CHuiCurvePath* curvePath = NULL;

            TInt* params = (TInt*)aInitialParams.Ptr();

            if ( *params )

                {

                curvePath = (CHuiCurvePath*) aResolver.GetInterfaceL(EHuiObjectTypeCurvePathProvider, *params );

                }

            result = CAlfCurvePathHandler::NewL( aResolver,curvePath );      

            break;

            }

        case EAlfMappingFunctionTableCreate:

            {

            result = new (ELeave) TAlfTableMappingFunctionHandler(aResolver);            

            break;

            }

        case EAlfPlatformTextStyleCreate:

	        {

	        TInt2* params = (TInt2*)aInitialParams.Ptr();

	        result = new (ELeave) TAlfTextStyleHandler(aResolver, params->iInt1, params->iInt2, EAlfPlatformTextStyleCreate);

	        break;	

	        }

        case EAlfPreconfiguredTextStyleCreate:

	        {

	        TInt* params = (TInt*)aInitialParams.Ptr();

	        result = new (ELeave) TAlfTextStyleHandler(aResolver, *params, 0, EAlfPreconfiguredTextStyleCreate);

	        break;

	        }	         

        case EAlfPlatformTextStyleCopy:

	        {

	        TInt* params = (TInt*)aInitialParams.Ptr();

	        result = new (ELeave) TAlfTextStyleHandler(aResolver, *params, 0, EAlfPlatformTextStyleCopy);

	        break;	

	        }

        default:

            User::Leave(KErrNotSupported);