/*

* Copyright (c) 2007 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:  Implements a user scene setup list item.*

*/

// INCLUDE FILES

#include "CamUserSceneSetupListItem.h"

#include "CamSettings.hrh"

#include "CamSettingsInternal.hrh"

#include "CamPanic.h"

#include <barsread.h>

#include <e32std.h>

#include <eikenv.h>

#include "CamUtility.h"

// CONSTANTS

const TInt KValuesArrayGranularity = 6;

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

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

// CCamUserSceneSetupListItem::NewLC

// Symbian two-phased constructor.

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

//

CCamUserSceneSetupListItem* CCamUserSceneSetupListItem::NewLC

( TInt aResId )

    {

    CCamUserSceneSetupListItem* self =

        new ( ELeave ) CCamUserSceneSetupListItem;

    CleanupStack::PushL( self );

    self->ConstructL( aResId );

    return self;

    }

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

// CCamUserSceneSetupListItem::NewL

// Symbian two-phased constructor.

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

//

CCamUserSceneSetupListItem* CCamUserSceneSetupListItem::NewL

(  TInt aResId )

    {

    CCamUserSceneSetupListItem* self = 

        CCamUserSceneSetupListItem::NewLC( aResId );

    CleanupStack::Pop( self );

    return self;

    }

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

// CCamUserSceneSetupListItem::~CCamUserSceneSetupListItem

// Destructor.

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

//

CCamUserSceneSetupListItem::~CCamUserSceneSetupListItem()

  {

  PRINT( _L("Camera => ~CCamUserSceneSetupListItem" ))  

  iValues.ResetAndDestroy();

  iValues.Close();

  PRINT( _L("Camera <= ~CCamUserSceneSetupListItem" ))  

  }

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

// CCamUserSceneSetupListItem::ListBoxText

// Returns the formatted text of this item to be used in the list box

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

//

TPtrC16 CCamUserSceneSetupListItem::ListBoxText()

    {

    // Create the title part of the text.

    _LIT( KSettingItemSingleSpace, " " );

    _LIT( KListBoxTextSeparator, "\t" );

	TPtr listBoxTextPtr = iListBoxText.Des();

    listBoxTextPtr.Copy( KSettingItemSingleSpace );

	listBoxTextPtr.Append( KListBoxTextSeparator );

	listBoxTextPtr.Append( SettingName() );

   	listBoxTextPtr.Append( KListBoxTextSeparator );

	listBoxTextPtr.Append( KListBoxTextSeparator );

    // Append the second part of the text to the title part.

    // ...If there is value text for this item then append it.

    if ( iValues.Count() > 0 )

        {

	    TPtrC settingPtr = SettingText();

	    listBoxTextPtr.Append( settingPtr );

        }

    return iListBoxText;

    }

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

// CCamUserSceneSetupListItem::SettingsModelTypeId

// Returns the settings model item id that is associated with this

// list item.

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

//

TInt CCamUserSceneSetupListItem::SettingsModelTypeId()

    {

    return iSettingsModelItemId;

    }

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

// CCamUserSceneSetupListItem::SetCurrentValue

// Sets the current value of this list item

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

//

void CCamUserSceneSetupListItem::SetCurrentValue( TInt aNewValue )

    {

    PRINT1( _L("Camera => CCamUserSceneSetupListItem::SetCurrentValue = %d" ), aNewValue )

    PRINT1( _L("iSettingsModelItemId = %d" ), iSettingsModelItemId )

    // Find the value-text pair that match the new current value,

    // and store the index.

    // Currently the brightness and contrast items only show 3 icons

    // 1 for normal setting i.e. 0

    // 1 for any positive setting i.e. above 0 and

    // 1 for any negative setting i.e. below 0

    // The code below matches positive/negative values to the correct icon

    if ( iSettingsModelItemId == ECamSettingItemUserSceneBrightness )

        {

        if ( aNewValue < ECamBrightnessNorm )

            {

            iCurrentPairIndex = ECamBrightnessNeg;

            return;

            }

        if ( aNewValue > ECamBrightnessNorm )

            {

            iCurrentPairIndex = ECamBrightnessPlus;

            return;

            }

        }

    else if ( iSettingsModelItemId == ECamSettingItemUserSceneContrast )

        {

        if ( aNewValue < ECamContrastNorm )

            {

            PRINT( _L("iCurrentPairIndex = ECamContrastNeg" ) )

            iCurrentPairIndex = ECamContrastNeg;

            return;

            }

        if ( aNewValue > ECamContrastNorm )

            {

            iCurrentPairIndex = ECamContrastPlus;

            PRINT( _L("iCurrentPairIndex = ECamContrastPlus" ) )

            return;

            }

        }

    else

        {

        // lint

        }

    TInt i = 0;

    TBool foundPair = EFalse;

    do 

        {

        __ASSERT_DEBUG( i <= iValues.Count(), 

            CamPanic( ECamPanicUSSPairNotFound ) );

        if ( aNewValue == iValues[i]->iSettingsModelId )

            {

            foundPair = ETrue;

            iCurrentPairIndex = i;

            }

        else

            {

            ++i;

            }

        }

    while ( !foundPair );

   PRINT1( _L("iCurrentPairIndex = %d" ), iCurrentPairIndex )   

   }

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

// CCamUserSceneSetupListItem::CCamUserSceneSetupListItem

// Constructor

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

//

CCamUserSceneSetupListItem::CCamUserSceneSetupListItem()

:iValues( KValuesArrayGranularity )

    {

    }

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

// CCamUserSceneSetupListItem::ConstructFromResourceL

// 2nd phase Constructor

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

//

void CCamUserSceneSetupListItem::ConstructL

( TInt aResId )

    {

    // Create a resource reader for reading only this list items data.

    TResourceReader localReader;

    CEikonEnv::Static()->CreateResourceReaderLC

        ( localReader, aResId );

    // Read the data for this list item from resource.

    // ...get setting model item id associated with this list item.

    iSettingsModelItemId = localReader.ReadInt16();

    // ...get the text name of this list item.

    iName = localReader.ReadTPtrC();

    // ...get the count of all possible values 

    // ...that this list item can have, and repeatedly get these values

    // ...and their associated textual description.

    TInt valuesCount = localReader.ReadInt16();

	TInt i;

    for ( i = 0; i < valuesCount; ++i )

        {

        // ...create the pair object.

        CValueTextPair* pair = new ( ELeave ) CValueTextPair;

        // ...set the data.

        pair->iSettingsModelId = localReader.ReadInt16();

        pair->iText = localReader.ReadTPtrC();

        // ...add the pair to the pair list.

        CleanupStack::PushL( pair );

        iValues.AppendL( pair );

        CleanupStack::Pop( pair );

        }    

    // Pop local resource reader.

    CleanupStack::PopAndDestroy();  

    }

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

// CCamUserSceneSetupListItem::SettingName

// Returns the name of the setting type represented by this

// list item.

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

//

TPtrC CCamUserSceneSetupListItem::SettingName() const

	{

	return iName;

	}

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

// CCamUserSceneSetupListItem::SettingText

// Returns the text for the current setting value of this item

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

//

TPtrC CCamUserSceneSetupListItem::SettingText()

	{

    iValueText = iValues[iCurrentPairIndex]->iText;

    return iValueText;

    }

// End of File