/*

* 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:  

*

*/

#include <gdi.h>

#include <fbs.h>

#include <activepalette2graphics.mbg>

#include "ActivePalette2Logger.h"

#include "ActivePalette2Cfg.h"

#include "ActivePalette2Utils.h"

#include "ActivePalette2SemiTransparentFadingStyler.h"

static const TInt KAlphaMask = 0xFF;

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

// 2-phase constructor <<static>>

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

//

CActivePalette2SemiTransparentFadingStyler* 

CActivePalette2SemiTransparentFadingStyler::NewL()

  {

  CActivePalette2SemiTransparentFadingStyler* self = 

      new (ELeave) CActivePalette2SemiTransparentFadingStyler();

  CleanupStack::PushL(self);

  self->ConstructL();

  CleanupStack::Pop( self );

  return self;

  }

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

// Destructor <<virtual>>

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

//

CActivePalette2SemiTransparentFadingStyler

::~CActivePalette2SemiTransparentFadingStyler()

  {

  ReleaseTooltipBuf();

  }

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

// BlitTooltip <<virtual>>

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

//

void 

CActivePalette2SemiTransparentFadingStyler

::BlitTooltip( CBitmapContext* aGc, 

               const TPoint&   aPos, 

               TInt            aCurrentPhase, 

               TInt            aTotalPhases )

  {

  TInt alpha_orig  = ( KAlphaMask * aCurrentPhase ) / aTotalPhases;

  TInt alpha_value = alpha_orig & KAlphaMask; // Limit to 0..255

  TRgb alpha       = TRgb::Gray256( alpha_value );

  LOGTEXT1( _L("CActivePalette2SemiTransparentFadingStyler::BlitTooltip, alpha=%d"), alpha_value );

  iTooltipAlphaContext->SetBrushColor( alpha );

  iTooltipAlphaContext->SetBrushStyle( CGraphicsContext::ESolidBrush );

  iTooltipAlphaContext->Clear();

  iTooltipBlendedMaskContext->SetBrushColor( KRgbBlack );

  iTooltipBlendedMaskContext->SetBrushStyle( CGraphicsContext::ESolidBrush );

  iTooltipBlendedMaskContext->Clear();

  iTooltipBlendedMaskContext->BitBltMasked( TPoint( 0,0 ), 

                                            iTooltipAlphaBitmap, 

                                            TooltipSize(),

                                            iTooltipBufMaskBitmap, 

                                            EFalse );

  aGc->BitBltMasked( aPos, 

                     iTooltipBufBitmap, 

                     TooltipSize(),

                     iTooltipBlendedMaskBitmap, 

                     EFalse );

  }

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

// TooltipNoseMaskId <<virtual>>

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

//

TInt 

CActivePalette2SemiTransparentFadingStyler::TooltipNoseMaskId()

  {

  return EMbmActivepalette2graphicsQgn_graf_cam4_tb_tooltip_end_mask;

  }

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

// TooltipBodyMaskId <<virtual>>

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

//

TInt 

CActivePalette2SemiTransparentFadingStyler::TooltipBodyMaskId()

  {

  return EMbmActivepalette2graphicsQgn_graf_cam4_tb_tooltip_body_mask;

  }

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

// AllocateTooltipBufL <<virtual>>

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

//

void 

CActivePalette2SemiTransparentFadingStyler::AllocateTooltipBufL()

  {

  ReleaseTooltipBuf();

  ActivePalette2Utils::CreateDrawingObjectsL( TooltipSize(),

                                              &iTooltipBufBitmap,

                                              &iTooltipBufDevice,

                                              &iTooltipBufContext );

  ActivePalette2Utils::CreateDrawingObjectsL( EGray2,

                                              TooltipSize(),

                                              &iTooltipBufMaskBitmap,

                                              &iTooltipBufMaskDevice,

                                              &iTooltipBufMaskContext );

  ActivePalette2Utils::CreateDrawingObjectsL( EGray256, 

                                              TooltipSize(),

                                              &iTooltipAlphaBitmap,

                                              &iTooltipAlphaDevice,

                                              &iTooltipAlphaContext );

  ActivePalette2Utils::CreateDrawingObjectsL( EGray256, 

                                              TooltipSize(),

                                              &iTooltipBlendedMaskBitmap,

                                              &iTooltipBlendedMaskDevice,

                                              &iTooltipBlendedMaskContext );

  }

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

// ReleaseTooltipBuf <<virtual>>

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

//

void 

CActivePalette2SemiTransparentFadingStyler::ReleaseTooltipBuf()

  {

  ActivePalette2Utils::DeleteDrawingObjects( &iTooltipBufBitmap,

                                             &iTooltipBufDevice,

                                             &iTooltipBufContext );

  ActivePalette2Utils::DeleteDrawingObjects( &iTooltipBufMaskBitmap,

                                             &iTooltipBufMaskDevice,

                                             &iTooltipBufMaskContext );

  ActivePalette2Utils::DeleteDrawingObjects( &iTooltipAlphaBitmap,

                                             &iTooltipAlphaDevice,

                                             &iTooltipAlphaContext );

  ActivePalette2Utils::DeleteDrawingObjects( &iTooltipBlendedMaskBitmap,

                                             &iTooltipBlendedMaskDevice,

                                             &iTooltipBlendedMaskContext );

  }