/*

* Copyright (c) 2008 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:  Taskswitcher view class

 *

*/

#include <AknUtils.h>

#include <AknsUtils.h>

#include <aknlayoutscalable_apps.cdl.h>

#include <aknlayoutscalable_avkon.cdl.h>

#include <layoutmetadata.cdl.h>

#include <AknsFrameBackgroundControlContext.h>

#include <AknsDrawUtils.h>

#include <eikmenub.h>

#include <gfxtranseffect/gfxtranseffect.h>

#include <akntransitionutils.h>

#include <akntranseffect.h>

#include <aknPopupHeadingPane.h>

#include <StringLoader.h>

#include <taskswitcher.rsg>

#include "tsappview.h"

#include "tsappui.h"

#include "tsapplogging.h"

#include "tsfastswaparea.h"

#include "tseventcontroler.h"

#include "tsuid.hrh"

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

// CTsAppView::NewL

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

//

CTsAppView* CTsAppView::NewL( const TRect& aRect,

        CTsDeviceState& aDeviceState,

        RWindowGroup& aWg)

    {

    CTsAppView* self = CTsAppView::NewLC( aRect, aDeviceState, aWg );

    CleanupStack::Pop( self );

    return self;

    }

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

// CTsAppView::NewLC

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

//

CTsAppView* CTsAppView::NewLC( const TRect& aRect,

        CTsDeviceState& aDeviceState,

        RWindowGroup& aWg)

    {

    CTsAppView* self = new (ELeave) CTsAppView( aDeviceState );

    CleanupStack::PushL( self );

    self->ConstructL( aRect, aWg );

    return self;

    }

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

// CTsAppView::CTsAppView

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

//

CTsAppView::CTsAppView(CTsDeviceState& aDeviceState)

        : iDeviceState( aDeviceState )

    {

    // no implementation required

    }

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

// InvalidateWindows

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

//

static void InvalidateWindows( CCoeControl* aControl )

    {

    if ( aControl )

        {

        if ( aControl->OwnsWindow() )

            {

            static_cast<RWindow*>( aControl->DrawableWindow() )->ClearRedrawStore();

            }

        for ( TInt i = aControl->CountComponentControls() - 1; i >= 0; --i )

            {

            InvalidateWindows( aControl->ComponentControl( i ) );

            }

        }

    }

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

// CTsAppView::~CTsAppView

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

//

CTsAppView::~CTsAppView()

    {

    delete iBgContext;

    delete iFastSwapArea;

    delete iAppsHeading;

    delete iEvtHandler;

    }

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

// CTsAppView::ConstructL

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

//

void CTsAppView::ConstructL( const TRect& aRect, RWindowGroup& aWg )

    {

    TSLOG_CONTEXT( CTsAppView::ConstructL, TSLOG_LOCAL );

    TSLOG_IN();

    // Create a window for this application view

    CreateWindowL(aWg);

    // Store rect

    TInt variety = Layout_Meta_Data::IsLandscapeOrientation() ? 1 : 0;

    TAknLayoutRect mainView;

    mainView.LayoutRect( aRect,

            AknLayoutScalable_Apps::main_tport_pane( variety ) );

    iViewRect = mainView.Rect();

    // Background control context is for a frame

    UpdatePopupRects();

    iBgContext = CAknsFrameBackgroundControlContext::NewL(

               KAknsIIDQsnFrPopup,

               iBgContextOuterRect,

               iBgContextInnerRect,

               EFalse );

    iBgContext->SetFrameRects(iBgContextOuterRect, iBgContextInnerRect);

    iBgContext->SetCenter( KAknsIIDQsnFrPopupCenter );

    TSLOG4( TSLOG_INFO, "view rect = %d %d %d %d",

        iViewRect.iTl.iX, iViewRect.iTl.iY,

        iViewRect.iBr.iX, iViewRect.iBr.iY );

    // Create components

    CreateControlsL();

    // Hide 'active applications' item in Options menu

    CEikMenuBar* menub = iEikonEnv->AppUiFactory()->MenuBar();

    if ( menub )

        {

        menub->SetMenuType( CEikMenuBar::EMenuOptionsNoTaskSwapper );

        }

    // Register for notifications about orientation etc. changes

    iDeviceState.AddObserverL( *this, MTsDeviceStateObserver::EAny );

    SetRect( iViewRect );

    //SetExtentToWholeScreen();

    iViewRect = Rect();

    // try to enable window transparency

    if( CAknEnv::Static()->TransparencyEnabled() )

        {

        Window().SetRequiredDisplayMode( EColor16MA );

        if ( Window().SetTransparencyAlphaChannel() == KErrNone )

            {

            Window().SetBackgroundColor( ~0 );

            }

        }

    DrawableWindow()->EnableBackup(EWindowBackupFullScreen);

    SetComponentsToInheritVisibility(ETrue);

    MakeVisible(EFalse);

    // Ready to be drawn

    ActivateL();

    TSLOG_OUT();

    }

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

// CTsAppView::DisableAppSwitchEffects

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

//

void CTsAppView::DisableAppSwitchEffects()

    {

    TInt flags = AknTransEffect::TParameter::ENoEffects;

    GfxTransEffect::BeginFullScreen(

        AknTransEffect::ENone,

        TRect(0,0,0,0),

        AknTransEffect::EParameterType,

        AknTransEffect::GfxTransParam( TUid::Uid(KTsAppUidValue), flags ) );

    }

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

// CTsAppView::GetPopupRects

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

//

void CTsAppView::UpdatePopupRects(  )

    {

    TSLOG_CONTEXT( UpdatePopupRects, TSLOG_LOCAL );

    TSLOG_IN();

    TInt variety = Layout_Meta_Data::IsLandscapeOrientation() ? 1 : 0;

    TAknLayoutRect bgTport;

    bgTport.LayoutRect( iViewRect,

        AknLayoutScalable_Apps::bg_popup_window_pane_cp01( variety ) );

    iBgContextOuterRect = bgTport.Rect();

    bgTport.LayoutRect( iBgContextOuterRect,

        AknLayoutScalable_Avkon::aid_inside_area_window_primary( variety ) );

    iBgContextInnerRect = bgTport.Rect();

    TSLOG4( TSLOG_INFO, "outer rect for popup = %d %d %d %d",

            iBgContextOuterRect.iTl.iX, iBgContextOuterRect.iTl.iY,

            iBgContextOuterRect.iBr.iX, iBgContextOuterRect.iBr.iY );

    TSLOG4( TSLOG_INFO, "inner rect for popup = %d %d %d %d",

            iBgContextInnerRect.iTl.iX, iBgContextInnerRect.iTl.iY,

            iBgContextInnerRect.iBr.iX, iBgContextInnerRect.iBr.iY );

    TSLOG_OUT();

    }

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

// CTsAppView::CreateControlsL

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

//

void CTsAppView::CreateControlsL()

    {

    RArray<TRect> rects;

    CleanupClosePushL( rects );

    rects.ReserveL( 2 ); // so appending in GetRects cannot fail

    GetRects( rects );

    iEvtHandler = CTsEventControler::NewL(*this, *this);

    iFastSwapArea = CTsFastSwapArea::NewL(rects[1], *this,

            iDeviceState, *iEvtHandler);

    iAppsHeading = new ( ELeave ) CAknPopupHeadingPane;

    iFastSwapArea->SetMopParent( this );

    iFastSwapArea->SetFocusing( ETrue );

    iFastSwapArea->Setup( *this );

    iFastSwapArea->SetDataChangeObserver( this );

    iAppsHeading->SetContainerWindowL( *this );

    iAppsHeading->ConstructL( KNullDesC() );

    iAppsHeading->SetLayout( CAknPopupHeadingPane::EListHeadingPane ); 

    //TODO: check why we need to set rect (set already in contructL)

    iFastSwapArea->SetRect( rects[1] ); // cannot be before iAppsHeading constructL

    iAppsHeading->SetRect( rects[0] );

    CleanupStack::PopAndDestroy( &rects );

    UpdateHeadingsL(0);

    }

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

// CTsAppView::GetRects

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

//

void CTsAppView::GetRects( RArray<TRect>& aRects )

    {

    TSLOG_CONTEXT( CTsAppView::GetRects, TSLOG_LOCAL );

    TSLOG_IN();

#ifndef TASKSWITCHER_USE_CUSTOM_LAYOUT

    TInt variety = Layout_Meta_Data::IsLandscapeOrientation() ? 1 : 0;

    TAknLayoutRect appsLabel;

    TAknLayoutRect fastSwapAreaPane;

    appsLabel.LayoutRect( iViewRect,

            AknLayoutScalable_Apps::heading_pane_cp07( variety ) );

    TSLOG4( TSLOG_INFO, "apps heading rect = %d %d %d %d",

            appsLabel.Rect().iTl.iX, appsLabel.Rect().iTl.iY,

            appsLabel.Rect().iBr.iX, appsLabel.Rect().iBr.iY );

    fastSwapAreaPane.LayoutRect( iViewRect,

            AknLayoutScalable_Apps::tport_appsw_pane( variety ) );

    TSLOG4( TSLOG_INFO, "fsw rect = %d %d %d %d",

            fastSwapAreaPane.Rect().iTl.iX, fastSwapAreaPane.Rect().iTl.iY,

            fastSwapAreaPane.Rect().iBr.iX, fastSwapAreaPane.Rect().iBr.iY );

    aRects.Append( appsLabel.Rect() );

    aRects.Append( fastSwapAreaPane.Rect() );

#else

    TRect tempRect;

    AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EScreen, tempRect);

    tempRect.iTl = TPoint(0,0);

    TRect fastSwapRect, headingRect;

    fastSwapRect.iTl = TPoint(KFswBorderSize, (tempRect.Height() - KFswItemHeight - KFswHeadingHeight) / 2 + KFswHeadingHeight);

    fastSwapRect.iBr = TPoint(tempRect.iBr.iX - KFswBorderSize, fastSwapRect.iTl.iY + KFswItemHeight);

    headingRect.iTl = TPoint(KFswBorderSize, fastSwapRect.iTl.iY - KFswHeadingHeight);

    headingRect.iBr = TPoint(fastSwapRect.iBr.iX, fastSwapRect.iTl.iY);

    aRects.Append( headingRect );

    aRects.Append( fastSwapRect );

#endif

    TSLOG_OUT();

    }

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

// CTsAppView::SizeChanged

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

//

void CTsAppView::SizeChanged()

    {

    TSLOG_CONTEXT( CTsAppView::SizeChanged, TSLOG_LOCAL );

    TSLOG_IN();

    iViewRect = Rect();

    UpdatePopupRects();

    iBgContext->SetFrameRects(iBgContextOuterRect, iBgContextInnerRect);

    iBgContext->SetParentPos(PositionRelativeToScreen());

    if ( iFastSwapArea && iAppsHeading  )

        {

        RArray<TRect> rects;

        // make sure that appending in GetRect cannot fail

        if ( rects.Reserve( 2 ) == KErrNone )

            {

            GetRects( rects );

            iAppsHeading->SetRect( rects[0] );

            iFastSwapArea->SetRect( rects[1] );

            DrawDeferred();

            }

        rects.Close();

        // Focus jumps back to fsw

        ChangeFocus( iFastSwapArea );

        }

    TSLOG_OUT();

    }

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

// CTsAppView::Draw

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

//

void CTsAppView::Draw( const TRect& /*aRect*/ ) const

    {

    CWindowGc& gc = SystemGc();

    MAknsSkinInstance* skin = AknsUtils::SkinInstance();

    AknsDrawUtils::DrawFrame( skin,

           gc,

           iBgContextOuterRect,

           iBgContextInnerRect,

           KAknsIIDQsnFrPopup,

           KAknsIIDQsnFrPopupCenter );

    }

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

// CTsAppView::MopSupplyObject

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

//

TTypeUid::Ptr CTsAppView::MopSupplyObject( TTypeUid aId )

    {

    if ( aId.iUid == MAknsControlContext::ETypeId )

        {

        return MAknsControlContext::SupplyMopObject( aId, iBgContext );

        }

    return CCoeControl::MopSupplyObject( aId );

    }

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

// CTsAppView::OfferKeyEventL

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

//

TKeyResponse CTsAppView::OfferKeyEventL(

        const TKeyEvent& aKeyEvent,

        TEventCode aType )

    {

    TSLOG_CONTEXT( OfferKeyEventL, TSLOG_LOCAL );

    TSLOG2_IN( "iCode = %d type = %d", aKeyEvent.iCode, aType );

    TKeyResponse result = EKeyWasNotConsumed;

    // Always use the portrait version, the layout in landscape is now

    // similar to portrait.

    result = OfferKeyEventPortraitStyleL( aKeyEvent, aType );

    // handle some other keys

    if ( result == EKeyWasNotConsumed && aType == EEventKey )

        {

        switch ( aKeyEvent.iCode )

            {

            case EKeyYes: // send (green) key

                result = EKeyWasConsumed;

                break;

            }

        }

    // forward to focused control if not yet handled

    if ( result == EKeyWasNotConsumed && iFocused )

        {

        result = iFocused->OfferKeyEventL( aKeyEvent, aType );

        }

    TSLOG1_OUT( "response = %d", result );

    return result;

    }

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

// CTsAppView::OfferKeyEventPortraitStyleL

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

//

TKeyResponse CTsAppView::OfferKeyEventPortraitStyleL(

        const TKeyEvent& /*aKeyEvent*/, TEventCode /*aType*/)

    {

    TKeyResponse result = EKeyWasNotConsumed;

    return result;

    }

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

// CTsAppView::CountComponentControls

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

//

TInt CTsAppView::CountComponentControls() const

    {

    return 2;

    }

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

// CTsAppView::ComponentControl

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

//

CCoeControl* CTsAppView::ComponentControl( TInt aIndex ) const

    {

    switch ( aIndex )

        {

        case 0:

            return iFastSwapArea;

        case 1:

            return iAppsHeading;

        default:

            return NULL;

        }

    }

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

// CTsAppView::HandleSwitchToBackgroundEvent

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

//

void CTsAppView::HandleSwitchToBackgroundEvent()

    {

    iPopupFader.FadeBehindPopup( this, NULL, EFalse );

    iFastSwapArea->HandleSwitchToBackgroundEvent();

    }

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

// CTsAppView::HandleSwitchToForegroundEvent

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

//

void CTsAppView::HandleSwitchToForegroundEvent()

    {

    TSLOG_CONTEXT( CTsAppView::HandleSwitchToForegroundEvent, TSLOG_LOCAL );

    TSLOG_IN();

    // Forward event to interested controls

    iFastSwapArea->HandleSwitchToForegroundEvent();

    iFastSwapArea->UpdateComponentVisibility();

    // Check for layout updates

    CTsAppUi* appUi = static_cast<CTsAppUi*>(iCoeEnv->AppUi());

    if ( iViewRect != appUi->ApplicationRect() &&

         appUi->LayoutChangeAllowed() )

        {

        HandleDeviceStateChanged( EOrientation );

        }

    Window().Invalidate(Rect());

    iEvtHandler->EnableEventHandling(ETrue);

    // Fade behind the pop-up

    iPopupFader.FadeBehindPopup( this, NULL, ETrue );

    DrawDeferred(); // otherwise some parts may not be drawn properly

    // Focus jumps back to fsw

    ChangeFocus( iFastSwapArea );

    // Start animation

    CTsAppUi* appui =

        static_cast<CTsAppUi*>( iEikonEnv->AppUi() );

    if ( appui->EffectsEnabled() )

        {

        InvalidateWindows( this );

        appui->StartTransion(CTsAppUi::EForegroundTransition);

        }

    else

        {

        CAknTransitionUtils::MakeVisibleSubComponents( this,

            CAknTransitionUtils::EForceVisible );

        MakeVisible( ETrue );

        }

    iFastSwapArea->UpdateComponentVisibility();

    DrawDeferred();

    TSLOG_OUT();

    }

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

// CTsAppView::ChangeFocus

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

//

void CTsAppView::ChangeFocus( CCoeControl* aNewFocusedControl )

    {

    if ( iFocused != aNewFocusedControl )

        {

        if ( iFocused )

            {

            iFocused->SetFocus( EFalse, EDrawNow );

            }

        iFocused = aNewFocusedControl;

        if ( iFocused )

            {

            iFocused->SetFocus( ETrue, EDrawNow );

            }

        }

    }