/*

* Copyright (c) 2005-2009 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:  View part of the preview pop-up component.

*

*/

// INCLUDE FILES

#include "AknPreviewPopUp.h"

#include <AknPreviewPopUpObserver.h>

#include <AknPreviewPopUpController.h>

#include <AknUtils.h>

#include <AknsDrawUtils.h>

#include <aknViewAppUi.h>

#include <AknsFrameBackgroundControlContext.h>

#include <akntouchpane.h>

#include <aknbutton.h>

#include <vwsdef.h>

#include <aknview.h>

#include <apgwgnam.h>

#include <aknlayoutscalable_avkon.cdl.h>

#include <AknTasHook.h> // for testability hooks

#include <touchfeedback.h>

#include <gfxtranseffect/gfxtranseffect.h>

#include <akntransitionutils.h>

const TInt KWindowPosition = 1000;             // window's position

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

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

// CAknPreviewPopUp::NewL

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

//

CAknPreviewPopUp* CAknPreviewPopUp::NewL( CCoeControl& aContent,

        CAknPreviewPopUpController& aController,

        const TInt aStyle )

    {

    CAknPreviewPopUp* self = new ( ELeave ) CAknPreviewPopUp( aContent, 

                                                              aController,

                                                              aStyle );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    AKNTASHOOK_ADDL( self, "CAknPreviewPopUp" );

    return self;

    }

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

// CAknPreviewPopUp::CAknPreviewPopUp

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

//

CAknPreviewPopUp::CAknPreviewPopUp( CCoeControl& aContent,

                                    CAknPreviewPopUpController& aController,

                                    const TInt aStyle )

    : iContent( aContent ),

      iController( aController ),

      iFlags( aStyle ),

      iAllowUpEvent(EFalse)

    {

    GfxTransEffect::Register( this, KGfxPreviewPopupControlUid );

    }

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

// CAknPreviewPopUp::~CAknPreviewPopUp

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

//

CAknPreviewPopUp::~CAknPreviewPopUp()

    {

    if ( IsVisible() )

        {

        iCloseMenu = ETrue;

        iController.HidePopUp();

        }

    AKNTASHOOK_REMOVE();

    GfxTransEffect::Deregister( this );

    if ( CapturesPointer() )

        {

        SetPointerCapture( EFalse );

        }

    if ( iAvkonAppUi )

        {

        iAvkonAppUi->RemoveFromStack( this );

        }

    delete iBgContext;

    delete iHeadingText;

    delete iClosingIcon;

    }

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

// CAknPreviewPopUp::ConstructL

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

//

void CAknPreviewPopUp::ConstructL()

    {

    // set skin ids

    if ( iFlags & CAknPreviewPopUpController::ELayoutSubMenu )

        {

        iFrameId = KAknsIIDQsnFrPopupSub;

        iCenterId = KAknsIIDQsnFrPopupCenterSubmenu;

        }

    else

        {

        iFrameId = KAknsIIDQsnFrPopupPreview;

        iCenterId = KAknsIIDDefault;

        }

    TRect nullRect( 0,0,0,0 );

    iBgContext = CAknsFrameBackgroundControlContext::NewL(

        iFrameId, nullRect, nullRect, EFalse );

    CreateWindowL();

    EnableWindowTransparency();

    TInt stackPriority = ECoeStackPriorityCba;

    if ( !( iFlags & CAknPreviewPopUpController::EPermanentMode ) )

        {

        Window().SetPointerGrab( ETrue );

        SetGloballyCapturing( ETrue );

        Window().SetOrdinalPosition(KWindowPosition);

        }

    else

        {

        stackPriority = ECoeStackPriorityDefault;

        Window().SetOrdinalPosition( 0, ECoeWinPriorityNormal );

        }

    iAvkonAppUi->AddToStackL( this, stackPriority,

                              ECoeStackFlagRefusesAllKeys |

                              ECoeStackFlagRefusesFocus );

    EnableDragEvents();

    SetComponentsToInheritVisibility( ETrue );

    iContent.SetBackground( this );

    iContent.SetContainerWindowL( *this );

    iContent.ActivateL();

    if ( iFlags & CAknPreviewPopUpController::EFixedMode )

        {

        TRect appWindow;

        AknLayoutUtils::LayoutMetricsRect( AknLayoutUtils::EApplicationWindow, appWindow );

        TAknLayoutRect layoutRect;

        layoutRect.LayoutRect( appWindow, AknLayoutScalable_Avkon::popup_preview_fixed_window().LayoutLine() );

        SetRect( layoutRect.Rect() );

        }

    MakeVisible( EFalse );   

    ActivateL();

    }

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

// CAknPreviewPopUp::Show

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

//

void CAknPreviewPopUp::Show()

    {

    if ( !( iFlags & CAknPreviewPopUpController::EPermanentMode ) )

        {

        Window().SetOrdinalPosition( 0 );

        iAvkonAppUi->UpdateStackedControlFlags( this, NULL,

                                                ECoeStackFlagRefusesAllKeys );

        SetPointerCapture( ETrue );

        }

    iCloseMenu = EFalse; 

    TBool useTfx = !( iFlags & CAknPreviewPopUpController::EPermanentMode 

            || iFlags & CAknPreviewPopUpController::EFixedMode );

    if ( useTfx && GfxTransEffect::IsRegistered( this ) )

        {

        GfxTransEffect::Begin( this, KGfxControlAppearAction );

        MakeVisible( ETrue );

        GfxTransEffect::SetDemarcation( this, iPosition );

        GfxTransEffect::End( this );

        }

    else

        {

        MakeVisible( ETrue );

        }

    if( GrabbingComponent() )

        {

        iCloseMenu = ETrue;

        }

    iController.NotifyObservers( MAknPreviewPopUpObserver::EPreviewPopUpShown );

    }

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

// CAknPreviewPopUp::Hide

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

//

void CAknPreviewPopUp::Hide()

    {

    if ( !IsVisible() || ( GrabbingComponent() && !iCloseMenu && 

            !( iFlags & CAknPreviewPopUpController::EPermanentMode ) ) )

        {

        return; 

        }

    // Skip disappear transition if the popup is either permanent, fixed or

    // faded. Fading status is checked because there can't be two parallel

    // effects applied to the same window.

    TBool useTfx = !( iFlags & CAknPreviewPopUpController::EPermanentMode 

            || iFlags & CAknPreviewPopUpController::EFixedMode ) 

                    && !Window().IsFaded();

    if ( useTfx && GfxTransEffect::IsRegistered( this ) )

        {

        GfxTransEffect::Begin( this, KGfxControlDisappearAction );

        MakeVisible( EFalse );

        GfxTransEffect::End( this );

        }

    else

        {

        MakeVisible( EFalse );

        }

    Window().ClearRedrawStore();

    if ( !( iFlags & CAknPreviewPopUpController::EPermanentMode ) )

        {

        Window().SetOrdinalPosition( KWindowPosition );

        iAvkonAppUi->UpdateStackedControlFlags( this,

                                                ECoeStackFlagRefusesAllKeys,

                                                ECoeStackFlagRefusesAllKeys );

        }

    if ( CapturesPointer() )

        {

        SetPointerCapture( EFalse );

        }

    iController.NotifyObservers( MAknPreviewPopUpObserver::EPreviewPopUpHidden );

   }

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

// CAknPreviewPopUp::Flags

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

//

TInt CAknPreviewPopUp::Flags() const

    {

    return iFlags;

    }

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

// CAknPreviewPopUp::SetHeadingTextL

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

//

void CAknPreviewPopUp::SetHeadingTextL( const TDesC& aText )

    {

    delete iHeadingText;

    iHeadingText = NULL;

    if ( aText.Length() > 0 )

        {

        iHeadingText = aText.AllocL();    

        CreateClosingIconL();

        }

    else

        {

        if ( iClosingIcon )

            {

            delete iClosingIcon;

            iClosingIcon = NULL;

            }

        }    

    SetSize( MinimumSize() );

    }

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

// CAknPreviewPopUp::MinimumSize

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

//

TSize CAknPreviewPopUp::MinimumSize()

    {

    TSize size;

    if ( iFlags & CAknPreviewPopUpController::EFixedMode )

        {

        TRect appWindow;

        AknLayoutUtils::LayoutMetricsRect( AknLayoutUtils::EApplicationWindow, appWindow );

        TAknLayoutRect layoutRect;

        layoutRect.LayoutRect( appWindow, AknLayoutScalable_Avkon::popup_preview_fixed_window().LayoutLine() );

        size = layoutRect.Rect().Size();

        }

    else

        {

        TSize contentSize( iContent.MinimumSize() );

        TSize headingSize;

        // heading

        if ( HasHeading() )

            {

            TRect rect( 0, 0, 100, 100 ); // dummy rect to calculate heading

            TAknLayoutRect layoutRect;

            layoutRect.LayoutRect( rect, AknLayoutScalable_Avkon::heading_preview_pane().LayoutLine() );

            headingSize.iHeight = layoutRect.Rect().Height() + layoutRect.Rect().iTl.iY;

            }

        size = contentSize + headingSize;

        // If size is empty return it now so the size won't be increased below

        if ( size == TSize() )

            {

            return size; 

            }

        // frame borders

        TAknWindowComponentLayout center( CenterLayout() );

        size.iWidth += center.LayoutLine().il + center.LayoutLine().ir;

        size.iHeight += center.LayoutLine().it + center.LayoutLine().ib;

        }

    return size;

    }

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

// CAknPreviewPopUp::HandleResourceChange

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

//

void CAknPreviewPopUp::HandleResourceChange( TInt aType )

    {

    CCoeControl::HandleResourceChange( aType );

    switch ( aType )

        {

        case KAknsMessageSkinChange:

            if ( iClosingIcon )

                {

                delete iClosingIcon;

                iClosingIcon = NULL;

                TRAP_IGNORE( CreateClosingIconL() );

                }

            break;

        case KEikDynamicLayoutVariantSwitch:

            if ( iFlags & CAknPreviewPopUpController::EFixedMode )

                {

                TRect appWindow;

                AknLayoutUtils::LayoutMetricsRect( AknLayoutUtils::EApplicationWindow, appWindow );

                TAknLayoutRect layoutRect;

                layoutRect.LayoutRect( appWindow, AknLayoutScalable_Avkon::popup_preview_fixed_window().LayoutLine() );

                SetRect( layoutRect.Rect() );

                }

            else

                {

                SetSize( MinimumSize() );

                }

            break;

        default:

            break;

        }

    }

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

// CAknPreviewPopUp::HandleControlEventL

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

//

void CAknPreviewPopUp::HandleControlEventL( CCoeControl* aControl, 

                                            TCoeEvent aEventType )

    {

    if ( aControl == iClosingIcon && aEventType == EEventStateChanged )

        {

        Hide();

        }

    }

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

// CAknPreviewPopUp::Draw

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

//

void CAknPreviewPopUp::Draw( CWindowGc& aGc, const CCoeControl& /*aControl*/,

                             const TRect& aRect ) const

    {

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

        {

        DrawBackground( aGc, aRect );

        }

    else

        {

        MAknsSkinInstance* skin = AknsUtils::SkinInstance();

        MAknsControlContext* cc = AknsDrawUtils::ControlContext( this );

        AknsDrawUtils::Background( skin, cc, this, aGc, aRect ); 

        }

    }

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

// CAknPreviewPopUp::CountComponentControls

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

//

TInt CAknPreviewPopUp::CountComponentControls() const

    {

    if ( !iClosingIcon )

        {

        return 1; // iContent

        }

    return 2; // iContent, iClosingIcon

    }

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

// CAknPreviewPopUp::ComponentControl

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

//

CCoeControl* CAknPreviewPopUp::ComponentControl( TInt aIndex ) const

    {

    switch ( aIndex )

        {

        case 0:

            return &iContent;

        case 1:

            return iClosingIcon;

        default:

            return NULL;

        }

    }

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

// CAknPreviewPopUp::SizeChanged

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

//

void CAknPreviewPopUp::SizeChanged()

    {

    TRect rect( Rect() );

    TAknLayoutRect layoutRect;

    TAknWindowComponentLayout center( CenterLayout() );

    layoutRect.LayoutRect( rect, center.LayoutLine() );

    iBgContext->SetFrameRects( rect, layoutRect.Rect() );

    if ( iFlags & CAknPreviewPopUpController::EFixedMode )

        {

        if ( iFlags & CAknPreviewPopUpController::EExcludeFrames )

            {

            rect = layoutRect.Rect();

            if ( HasHeading() )

                {

                layoutRect.LayoutRect( Rect(), AknLayoutScalable_Avkon::heading_preview_pane().LayoutLine() );

                rect.iTl.iY = layoutRect.Rect().iBr.iY;

                }

            }

        iContent.SetRect( rect );

        }

    else

        {

        // content

        TPoint contentPosition;

        contentPosition.iX = center.LayoutLine().il;

        if ( HasHeading() )

            {

            TAknLayoutRect layoutRect;

            layoutRect.LayoutRect( rect, AknLayoutScalable_Avkon::heading_preview_pane().LayoutLine() );

            contentPosition.iY = layoutRect.Rect().iBr.iY;

            }

        else

            {

            contentPosition.iY = center.LayoutLine().it;

            }

        TSize contentSize( iContent.MinimumSize() );

        TSize maximumSize( Abs( layoutRect.Rect().iBr.iX - contentPosition.iX ),

                           Abs( layoutRect.Rect().iBr.iY - contentPosition.iY ) );

        if ( maximumSize.iWidth > contentSize.iWidth ||

             maximumSize.iHeight > contentSize.iHeight )

            {

            contentSize = maximumSize;

            }

        iContent.SetExtent( contentPosition, contentSize );

        }

    // closing icon    

    if ( iClosingIcon )

        {

        layoutRect.LayoutRect( Rect(), TAknWindowComponentLayout::Compose(

            AknLayoutScalable_Avkon::heading_preview_pane(),

            AknLayoutScalable_Avkon::heading_preview_pane_g1() ).LayoutLine() );

        iClosingIcon->SetRect( layoutRect.Rect() );

        }

    DrawDeferred();        

    }

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

// CAknPreviewPopUp::HandlePointerEventL

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

//

void CAknPreviewPopUp::HandlePointerEventL( const TPointerEvent& aPointerEvent )