/*

* Copyright (c) 2006-2007 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:   Implementation of CHuiS60Skin. CHuiS60Skin is a HUITK skin 

*                that uses resources from the current S60 skin.

*

*/

#include "uiacceltk/HuiS60Skin.h"  // Class definition

#include "uiacceltk/HuiStatic.h"

#include "HuiRenderPlugin.h"

#include "uiacceltk/HuiTextureManager.h"

#include "uiacceltk/HuiTexture.h"

#include "uiacceltk/HuiEnv.h"

#include "uiacceltk/HuiGc.h"

#include "uiacceltk/HuiUtil.h"

#include "uiacceltk/HuiDisplay.h"

#include <AknsDrawUtils.h>

#include <AknUtils.h>

#include "huiskinbackroundlayout.h"

struct TBackgroundTexture

    {

    TAknsItemID iID;

    CHuiTexture* iBackgroundTexture;    //not owned

    };

struct TPrivData

    {

    RArray<TBackgroundTexture> iBackgrounds;

    };

EXPORT_C CHuiS60Skin::CHuiS60Skin(CHuiEnv& aEnv)

    : CHuiSkin(aEnv)

    {

    iSpare = NULL;

    }

EXPORT_C void CHuiS60Skin::ConstructL()

    {

    iSkinControlContext = CAknsBasicBackgroundControlContext::NewL(

        KAknsIIDQsnBgScreen, TRect(TPoint(0, 0), HuiUtil::ScreenSize()), ETrue);

    iSpare = new (ELeave) TPrivData;

    iSkinChanged = ETrue;

    }

EXPORT_C CHuiS60Skin::~CHuiS60Skin()

    {

    FreeBackgrounds();

    delete (TPrivData*)(iSpare);

    delete iSkinControlContext;

    delete iBackgroundTexture;

    if (iSkinSrvConnected)

        iSkinSrvSession.Close();

   delete iBackgroundBitmap;

    }

EXPORT_C THuiSkinLocation CHuiS60Skin::Location(THuiSkinElement aElement)

    {

    // Changed so that correct cba location is asked from AknLayouUtils

    switch(aElement)

         {

         case EHuiSkinElementSoftKeys:

            {

            THuiSkinLocation retValue;

            AknLayoutUtils::TAknCbaLocation skLocation; 

            skLocation = (AknLayoutUtils::TAknCbaLocation)CHuiStatic::CbaLocation();

            switch ( skLocation )

                {

                default:

                    // falltrough

                case AknLayoutUtils::EAknCbaLocationBottom:

                    {

                    retValue = EHuiSkinLocationBottom;

                    break;

                    }

                case AknLayoutUtils::EAknCbaLocationRight:

                    {

                    retValue = EHuiSkinLocationRight;

                    break;

                    }

                case AknLayoutUtils::EAknCbaLocationLeft:

                    {

                    retValue = EHuiSkinLocationLeft;

                    break;

                    }

                }

            return retValue;

            }

        default:

            {

            return EHuiSkinLocationNone;

            }

        }

   }

MAknsSkinInstance* CHuiS60Skin::SkinInstance() const

    {

    MAknsSkinInstance* skin = 0;

    if ( CCoeEnv::Static())

        {

        skin = AknsUtils::SkinInstance();

        if(!skin )

            {

            TRAP_IGNORE( AknsUtils::InitSkinSupportL() )

            skin = AknsUtils::SkinInstance();

            }

        }

    return skin;

    }

void CHuiS60Skin::UpdateBackgroundL()

    {

    if(iBackgroundTexture)

         {

         iBackgroundTexture->Reset();

         delete iBackgroundTexture;

         iBackgroundTexture = 0;

         }

    HUI_DEBUG1(_L("CHuiS60Skin::UpdateBackgroundL - Free memory in the beginning: %i"), HuiUtil::FreeMemory());

    iBackgroundTexture = CreateSkinBackgroundL(KAknsIIDQsnBgScreen);

    iBackgroundTexture->SetSkinContent(ETrue);

    iBackgroundTexture->iContentObservers.AppendL(*this);

    HUI_DEBUG1(_L("CHuiS60Skin::UpdateBackgroundL - Free memory at exit: %i"), HuiUtil::FreeMemory());

    }

void CHuiS60Skin::SkinContentChanged()

    {

    iSkinChanged = ETrue;

    }

void CHuiS60Skin::SkinConfigurationChanged(

    const TAknsSkinStatusConfigurationChangeReason aReason )

    {

    }

void CHuiS60Skin::SkinPackageChanged(

    const TAknsSkinStatusPackageChangeReason aReason )

    {

    }

EXPORT_C const CHuiTexture& CHuiS60Skin::TextureL(TInt aSkinTextureId)

    {

    // Create S60 theme specific background texture

    // If Bitgdi renderer is used, do not create a copy of background 

    // image, but return the default dummy texture.

    if(aSkinTextureId == EHuiSkinBackgroundTexture && 

    	CHuiStatic::Renderer().Id () != EHuiRenderPluginBitgdi) 

        {

        if(!iBackgroundTexture || iReloadBackground || iSkinChanged)

            {

            UpdateBackgroundL();

            iReloadBackground = EFalse;

            }

        return *iBackgroundTexture;

        }

    // Otherwise use the default textures        

    return CHuiSkin::TextureL(aSkinTextureId);

    }

EXPORT_C void CHuiS60Skin::ReleaseTexture(TInt aSkinTextureResource)

    {

    HUI_DEBUG(_L("CHuiS60Skin::ReleaseTexture() - Called."));

    // Release background texture

    if(aSkinTextureResource == EHuiSkinBackgroundTexture)

        {

        HUI_DEBUG(_L("CHuiS60Skin::ReleaseTexture() - Destroying background texture."));

        delete iBackgroundTexture;

        iBackgroundTexture = NULL;

        }

    else

        {

        // Otherwise use the default method

        return CHuiSkin::ReleaseTexture(aSkinTextureResource);

        }                

    }

EXPORT_C void CHuiS60Skin::NotifyDisplaySizeChangedL()

    {

    // The background is now different.

    iReloadBackground = ETrue;

    SkinContentChanged(); // for changing the iSkinChanged flag

    Env().NotifySkinChangedL();

    Env().TextStyleManager().NotifyDisplaySizeChangedL();

    ReloadBgTexturesL();

    }

EXPORT_C TRgb CHuiS60Skin::StyleTextColor(THuiPreconfiguredTextStyle aStyle,

                                          THuiBackgroundType aBackgroundType) const

    {

    // Default text color depends directly on the background type.

    TRgb defaultColor = (aBackgroundType == EHuiBackgroundTypeLight? KRgbBlack : KRgbWhite);

    switch(aStyle)

        {

        default:

            break;

        case EHuiTextStyleSupplement:

            return TRgb(128, 128, 128);

        }

    return defaultColor;

    }

EXPORT_C void CHuiS60Skin::RestoreTextureContentL(CHuiTexture& aTexture)

    {

    if(&aTexture == iBackgroundTexture)

        {

        iReloadBackground = ETrue;

        TextureL(EHuiSkinBackgroundTexture);

        }

    else

        {

        CHuiSkin::RestoreTextureContentL(aTexture);

        }

    }

EXPORT_C void CHuiS60Skin::SkinExtension(const TUid& aExtensionUid, TAny** aExtensionParameters)

    {

    CHuiSkin::SkinExtension(aExtensionUid,aExtensionParameters);

    }

EXPORT_C THuiSkinOrientation CHuiS60Skin::Orientation() const

    {

    return CHuiSkin::Orientation();

    }

EXPORT_C void CHuiS60Skin::SetContext(CHuiGc& aGc)

    {

    CHuiSkin::SetContext(aGc);

    }

EXPORT_C CHuiGc& CHuiS60Skin::Context() const

    {

    return CHuiSkin::Context();

    }

EXPORT_C TInt CHuiS60Skin::GetTexture(TInt aSkinTextureResource, const CHuiTexture*& aOutTexture)

    {

    return CHuiSkin::GetTexture(aSkinTextureResource, aOutTexture);

    }

void CHuiS60Skin::FreeBackgrounds()

    {

    if (CHuiStatic::Renderer().Id () == EHuiRenderPluginBitgdi)

        {

        // no need to render the skin backgrounds separately on shitgdi

        return;

        }

    if (!iSpare)

        {

        return;

        }

    TBackgroundTexture bgTexture;

    TInt itemCount = ((TPrivData*)(iSpare))->iBackgrounds.Count(); 

    for (TInt index = 0; index < itemCount; index++)

        {

        bgTexture = ((TPrivData*)(iSpare))->iBackgrounds[index];

        delete bgTexture.iBackgroundTexture;

        bgTexture.iBackgroundTexture = NULL;

        }

    ((TPrivData*)(iSpare))->iBackgrounds.Reset(); 

    }

CHuiTexture* CHuiS60Skin::CreateSkinBackgroundL(const TAknsItemID& aID)

    {

    // Update the background image.

    if (!iSkinSrvConnected)

        {

        User::LeaveIfError(iSkinSrvSession.Connect(this));

        iSkinSrvConnected = ETrue;

        }

    MAknsSkinInstance* skin = SkinInstance();

    CHuiTexture* texture = CHuiTexture::NewL();

    CleanupStack::PushL(texture);            

    if(iSkinChanged)

         {

        delete iBackgroundBitmap; 

        iBackgroundBitmap = NULL;

        if (skin)

            {

            TRect dummy;

            TRect skinRect;

            GetRectForItem(aID, dummy, skinRect);

            iBackgroundBitmap = new (ELeave) CFbsBitmap();

            User::LeaveIfError( iBackgroundBitmap->Create(skinRect.Size(), EColor64K) );        

            CFbsBitmapDevice* device = CFbsBitmapDevice::NewL(iBackgroundBitmap);

            CleanupStack::PushL(device);

            CFbsBitGc* gc = 0;

            User::LeaveIfError( device->CreateContext(gc) );

            CleanupStack::PushL(gc);

            iSkinControlContext->SetRect(skinRect);

            iSkinControlContext->SetBitmap(aID);

            AknsDrawUtils::DrawBackground(skin, iSkinControlContext, NULL, *gc, TPoint(0,0), skinRect,

                              KAknsDrawParamDefault);

            CleanupStack::PopAndDestroy(gc);

            CleanupStack::PopAndDestroy(device);

            }

        else

            {

            iBackgroundBitmap = CHuiStatic::GetBgBitmapLC(aID);   

            CleanupStack::Pop( iBackgroundBitmap );

            }

         }

    texture->UploadL(*iBackgroundBitmap,NULL,EHuiTextureUploadFlagRetainResolution );            

    CleanupStack::Pop(texture);

    iSkinChanged = EFalse;

    return texture;

    }

void CHuiS60Skin::ReloadBgTexturesL()

    {

    if (CHuiStatic::Renderer().Id () == EHuiRenderPluginBitgdi )

        {

        // no need to render the skin backgrounds separately on bitgdi

        return;

        }

    TBackgroundTexture bgTexture;

    TInt itemCount = ((TPrivData*)(iSpare))->iBackgrounds.Count(); 

    for (TInt index = 0; index < itemCount; index++)

        {

        bgTexture = ((TPrivData*)(iSpare))->iBackgrounds[index];

        delete bgTexture.iBackgroundTexture;

        bgTexture.iBackgroundTexture = CreateSkinBackgroundL(bgTexture.iID);

        ((TPrivData*)(iSpare))->iBackgrounds[index] = bgTexture;

        }

    }

void CHuiS60Skin::UpdateBackgroundsL(const RArray<THuiDisplayBackgroundItem>& aItems)

    {

    if (CHuiStatic::Renderer().Id () == EHuiRenderPluginBitgdi)

        {

        // no need to render the skin backgrounds separately on shitgdi

        return;

        }

    FreeBackgrounds();    

    THuiDisplayBackgroundItem bgItem;

    TBackgroundTexture bgTexture;

    for (TInt index = 0; index < aItems.Count(); index++)

        {

        bgItem = aItems[index];

        if (bgItem.ClearMode() == CHuiDisplay::EClearWithSkinBackground)

            {

            bgTexture.iID = bgItem.SkinBackground();

            bgTexture.iBackgroundTexture = CreateSkinBackgroundL(bgItem.SkinBackground());

            ((TPrivData*)(iSpare))->iBackgrounds.Append(bgTexture);

            }

        }           

    }

EXPORT_C CHuiTexture* CHuiS60Skin::BackgroundTexture(const TAknsItemID& aID)

    {

    if (CHuiStatic::Renderer().Id () == EHuiRenderPluginBitgdi)

        {

        // only opengl has separate skin bg textures.

        return NULL;

        }

    if (!iSpare)

        {

        return NULL;

        }

    TBackgroundTexture bgTexture;

    TInt itemCount = ((TPrivData*)(iSpare))->iBackgrounds.Count(); 

    for (TInt index = 0; index < itemCount; index++)

        {

        bgTexture = ((TPrivData*)(iSpare))->iBackgrounds[index];

        if (bgTexture.iID == aID)

            {

            return bgTexture.iBackgroundTexture;

            }

        }

    return NULL;

    }