/*

* 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:  Zoom popup implementation.

*

*/

#include    <aknvolumepopup.h>

#include    <cvtlogger.h>

#include    "cvtuizoompopup.h"

#include    "cvtuifeaturemanager.h"

#include	"tVtuifeaturevariation.h"

#include    "CVtUiAppUi.h"

#include    "cvtengmodel.h"

// Number of zoom steps

static const TInt KZoomStepCount = 10;

// Minimum zoom factor value

static const TInt KMinZoomFactor = 0;

// default time out time for zoom popup

const TInt KDefaultZoomTimeOutTime = 5;  

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

// CVtUiZoomPopup::NewL

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

//

CVtUiZoomPopup* CVtUiZoomPopup::NewL( CVtUiFeatureManager&

    aFeatureManager )

    {

    __VTPRINTENTER( "CVtUiZoomPopup.NewL" )

    CVtUiZoomPopup* self =

        new ( ELeave ) CVtUiZoomPopup( aFeatureManager );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop();

    __VTPRINTEXIT( "CVtUiZoomPopup.NewL" )

    return self;

    }

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

// CVtUiZoomPopup::~CVtUiZoomPopup

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

//

CVtUiZoomPopup::~CVtUiZoomPopup()

    {

    __VTPRINTENTER( "CVtUiZoomPopup.~" )

    __VTPRINTEXIT( "CVtUiZoomPopup.~" )

    }

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

// CVtUiZoomPopup::RefreshL

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

//

void CVtUiZoomPopup::RefreshL()

    {

    __VTPRINTENTER( "CVtUiZoomPopup.RefreshL" )

    UpdateAdjustRangeL();

    iCurrent = CurrentZoomStep();

    if ( iCurrent < KMinZoomFactor )

        {

        User::Leave( KErrArgument );

        }

    SetValue( iCurrent );

    ShowPopupL();

    __VTPRINTEXIT( "CVtUiZoomPopup.RefreshL" )

    }

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

// CVtUiZoomPopup::DoActivateL()

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

//

void CVtUiZoomPopup::DoActivateL()

    {

    __VTPRINTENTER( "CVtUiZoomPopup.DoActivateL" )

    UpdateAdjustRangeL();

    CVtUiPopupBase::DoActivateL();

    // In order to refresh softkey.

    iFeatureManager.AppUi().RefreshSoftkeysL();

    __VTPRINTEXIT( "CVtUiZoomPopup.DoActivateL" )

    }

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

// CVtUiZoomPopup::OfferKeyEventL()

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

//

TKeyResponse CVtUiZoomPopup::OfferKeyEventL( const TKeyEvent& aEvent,

    TEventCode aCode )

    {

    __VTPRINTENTER( "CVtUiZoomPopup.OfferKeyEventL" )

    TKeyResponse response( EKeyWasNotConsumed );

    // Don't  handle other types here

    if ( aCode != EEventKey )

        {

        return response;

        }

    if ( aEvent.iScanCode == EStdKeyUpArrow ||

         aEvent.iScanCode == EStdKeyDownArrow ||

         aEvent.iCode == EKeyZoomIn ||

         aEvent.iCode == EKeyZoomOut )

        {

        __VTPRINT( DEBUG_GEN, "CVtUiZoomPopup.OfferKeyEventL zoom key" )

        TInt step( 1 );

        if ( aEvent.iScanCode == EStdKeyDownArrow ||

             aEvent.iCode == EKeyZoomOut )

            {

            step = -step;

            }

        const TInt current( Value() );

        TInt value( current + step );

        value = Max( KMinZoomFactor, Min( value, KZoomStepCount ) );

        if ( value != current )

            {

            __VTPRINT2( DEBUG_GEN, "CVtUiZoomPopup.OfferKeyEventL zoom = %d",

                value )

            SetValue( value );

            iFeatureManager.AppUi().SetZoomFactorL( ScaledValue() );

            response = EKeyWasConsumed;

            }

        ShowPopupL();

        }

    __VTPRINTEXITR( "CVtUiZoomPopup.OfferKeyEventL %d", response )

    return response;

    }

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

// CVtUiZoomPopup::HandleControlEventL

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

//

void CVtUiZoomPopup::HandleControlEventL( CCoeControl* aControl,

    TCoeEvent aEventType )

    {

    __VTPRINTENTER( "CVtUiZoomPopup.HandleControlEventL" )

    CVtUiPopupBase::HandleControlEventL( aControl, aEventType );

    if ( aEventType == EEventStateChanged )

        {

        __VTPRINT2( DEBUG_GEN, "CVtUiZoomPopup.HandleControlEventL zoom = %d", ScaledValue() )

        if ( CurrentZoomStep() != Value() )

            {

            iFeatureManager.AppUi().SetZoomFactorL( ScaledValue() );

            }

        }

    __VTPRINTEXIT( "CVtUiZoomPopup.HandleControlEventL" )

    }

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

// CVtUiZoomPopup::CVtUiZoomPopup

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

//

CVtUiZoomPopup::CVtUiZoomPopup( CVtUiFeatureManager& aFeatureManager )

    : CVtUiPopupBase( aFeatureManager.ComponentManager(),

      TVtUiBlockListBitField(

        MVtUiComponent::EComponentIdDialer |

        MVtUiComponent::EComponentIdToolbar |

        MVtUiComponent::EComponentIdNumberEntry |

        MVtUiComponent::EComponentIdVolume  |

        MVtUiComponent::EVComponentIdBrightness |

        MVtUiComponent::EVComponentIdContrast

        ),

      EComponentIdZoom ),

      iFeatureManager( aFeatureManager ),

      iMedia( aFeatureManager.AppUi().Model().Media() ),

      iCurrent( KErrNotReady )

    {

    __VTPRINTENTER( "CVtUiZoomPopup.CVtUiZoomPopup" )

    __VTPRINTEXIT( "CVtUiZoomPopup.CVtUiZoomPopup" )

    }

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

// CVtUiZoomPopup::ConstructL

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

//

void CVtUiZoomPopup::ConstructL()

    {

    __VTPRINTENTER( "CVtUiZoomPopup.ConstructL" )

    BaseConstructL();

    // Set slider type to percentage

    SetValueType( EAknSliderValuePercentage );

    // Set timeout

    SetTimeOut( KDefaultZoomTimeOutTime );

    __VTPRINTEXIT( "CVtUiZoomPopup.ConstructL" )

    }

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

// CVtUiZoomPopup::UpdateAdjustRangeL

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

//

void CVtUiZoomPopup::UpdateAdjustRangeL()

    {

    __VTPRINTENTER( "CVtUiZoomPopup.UpdateAdjustRangeL" )

    // Get max zoom step from engine

    iMax = MaxZoomStep();

    // Set value range to visible slider control

    // range 0-10 or 0-iMax if max < 0

    // stepcount = 10 or iMax if max < 10

    SetAdjustRange( KMinZoomFactor, Min( KZoomStepCount, iMax ), Min( KZoomStepCount, iMax ) );

    // Set value range to baseclass

    // range on e.g. 0-20

    SetMinAndMaxValues( KMinZoomFactor, iMax );    

    // Get current zoom step

    iCurrent = CurrentZoomStep();    

    if ( iCurrent == KErrNotFound || iMax == KErrNotFound || iCurrent > iMax )

        {

        User::Leave( KErrNotFound );

        }

    // Set new value

    SetValue( iCurrent );

    __VTPRINTEXIT( "CVtUiZoomPopup.UpdateAdjustRangeL" )

    }

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

// CVtUiZoomPopup::CurrentZoomStep

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

//

TInt CVtUiZoomPopup::CurrentZoomStep() const

    {

    __VTPRINTENTER( "CVtUiZoomPopup.CurrentZoomStep" )

    TInt current( KMinZoomFactor );

    const TInt error( iMedia.GetCurrentZoomStep( current ) );

    current = ( error ? KErrNotFound : current );

    // Value asked from the engine must be scaled.

    // If the current asked  value is 1 then the scaling formula in the 

    // popupbase doesn't round the value to 1 there fore value is 

    // initalized to 1.

    TInt  val = 1; 

    if ( current != 1 )

        {

        val =  SliderValueWithScaling( current );

        }

    __VTPRINTEXITR( "CVtUiZoomPopup.CurrentZoomStep %d", val )

    return val;

    }

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

// CVtUiZoomPopup::MaxZoomStep

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

//

TInt CVtUiZoomPopup::MaxZoomStep() const

    {

    __VTPRINTENTER( "CVtUiZoomPopup.MaxZoomStep" )

    TInt max( KMinZoomFactor );

    const TInt error( iMedia.GetMaxZoomStep( max ) );

    max = ( error ? KErrNotFound : max );

    __VTPRINTEXITR( "CVtUiZoomPopup.MaxZoomStep %d", max )

    return max;

    }

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

// CVtUiZoomPopup::ScaleAndSetZoomFactorL

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

//

void CVtUiZoomPopup::ScaleAndSetZoomFactorL( TInt aValue )

    {

       __VTPRINTENTER( "CVtUiZoomPopup.ScaleAndSetZoomFactorL" )

    const TInt value = aValue * MaxZoomStep() / 10; // 10 vakioksi count + 1 ei yhtä

    iFeatureManager.AppUi().SetZoomFactorL( value );  

     __VTPRINTEXITR( "CVtUiZoomPopup.ScaleAndSetZoomFactorL %d", value )

    }