/*

* Copyright (c) 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:  Custom draw component for message editor.

*

*/

#include <aknlayoutscalable_apps.cdl.h>

#include <AknLayoutFont.h>

#include "emailtrace.h"

#include "ncseditorcustomdraw.h"

#include "ncseditor.h"

#include "ncsconstants.h"

const TInt KFSColorDarkeningDegree = 3;

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

CNcsEditorCustomDraw* CNcsEditorCustomDraw::NewL( const MFormCustomDraw* aParentCustomDraw,

                                                  const CNcsEditor* aParentControl,

                                                  const TAknTextComponentLayout aLayout )

    {

    CNcsEditorCustomDraw* self = new (ELeave) CNcsEditorCustomDraw( aParentCustomDraw,

                                                                    aParentControl,

                                                                    aLayout );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// CNcsEditorCustomDraw::CNcsEditorCustomDraw

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

//

CNcsEditorCustomDraw::CNcsEditorCustomDraw( const MFormCustomDraw* aParentCustomDraw,

                                            const CNcsEditor* aParentControl,

                                            const TAknTextComponentLayout aLayout ) :

                                            iCustomDrawer( aParentCustomDraw ),

                                            iEditor( aParentControl )

    {

    FUNC_LOG;

    UpdateLayout( aLayout );

    }

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

// CMsgEditorCustomDraw::ConstructL

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

//

void CNcsEditorCustomDraw::ConstructL()

    {

    FUNC_LOG;

    }

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

// CNcsEditorCustomDraw::~CNcsEditorCustomDraw

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

//

CNcsEditorCustomDraw::~CNcsEditorCustomDraw()

    {

    FUNC_LOG;

    }

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

// CNcsEditorCustomDraw::DrawBackground

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

//

void CNcsEditorCustomDraw::DrawBackground(

    const TParam& aParam,

    const TRgb& aBackground,

    TRect& aDrawn ) const

    {

    FUNC_LOG;

    TRect drawRect( aParam.iDrawRect );

    if ( iPrevBrX == 0 )

        {

        const_cast<CNcsEditorCustomDraw*>(this)->iPrevBrX = drawRect.iBr.iX;

        }

    // draw background if text selection is ongoing

    if ( !iEditor->IsPhysicsEmulationOngoing() )

    	{

		iCustomDrawer->DrawBackground( aParam, aBackground, aDrawn );

    	}

    else

    	{

        aDrawn = aParam.iDrawRect;

    	}

    if ( drawRect.iTl.iY == 0 )

        {

        drawRect.iTl.iY = drawRect.Height() - iLineHeigth;

        }

    if ( drawRect.iTl.iX < iPrevBrX )

        {

        aParam.iGc.SetPenColor( iLineColor );

        TInt margin( 0 );

        if ( drawRect.Height() < iLineHeigth ||

             drawRect.Height() == iLineOffset )

            {

            margin = 1;

            }

        TRect currentRect( drawRect.iTl , TPoint( drawRect.iBr.iX, drawRect.iTl.iY + iLineOffset - margin ));

        while ( currentRect.iBr.iY <= drawRect.iBr.iY )

            {

            if ( currentRect.iTl.iY >= drawRect.iTl.iY  )

                {

                aParam.iGc.DrawLine( TPoint( currentRect.iTl.iX, currentRect.iBr.iY), currentRect.iBr );

                }

            currentRect.Move( 0, iLineHeigth );

            }

        const_cast<CNcsEditorCustomDraw*>(this)->iPrevBrX = drawRect.iBr.iX;

        }

    }

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

// CNcsEditorCustomDraw::DrawLineGraphics

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

//

void CNcsEditorCustomDraw::DrawLineGraphics( const TParam& aParam,

                                             const TLineInfo& aLineInfo ) const

    {

    FUNC_LOG;

    iCustomDrawer->DrawLineGraphics( aParam, aLineInfo );

    }

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

// CNcsEditorCustomDraw::DrawText

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

//

void CNcsEditorCustomDraw::DrawText( const TParam& aParam,

                               const TLineInfo& aLineInfo,

                               const TCharFormat& aFormat,

                               const TDesC& aText,

                               const TPoint& aTextOrigin,

                               TInt aExtraPixels ) const

    {

    FUNC_LOG;

    iCustomDrawer->DrawText( aParam,

                             aLineInfo,

                             aFormat,

                             aText,

                             aTextOrigin,

                             aExtraPixels );

    }

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

// CNcsEditorCustomDraw::SystemColor

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

//

TRgb CNcsEditorCustomDraw::SystemColor( TUint aColorIndex, TRgb aDefaultColor ) const

    {

    FUNC_LOG;

    return iCustomDrawer->SystemColor( aColorIndex, aDefaultColor );

    }

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

// CNcsEditorCustomDraw::UpdateLayout

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

//

void CNcsEditorCustomDraw::UpdateLayout( TAknTextComponentLayout aLayout )

    {

    iTextPaneLayout = aLayout;

    TRAP_IGNORE( iLineHeigth = iEditor->GetLineHeightL() );

    iLineColor = NcsUtility::CalculateMsgBodyLineColor( KFSColorDarkeningDegree, 

                                                            NcsUtility::SeparatorLineColor() );

    TAknTextDecorationMetrics decorationMetrics( iTextPaneLayout.LayoutLine().FontId() );

    TInt topMargin, bottomMargin;

    decorationMetrics.GetTopAndBottomMargins( topMargin, bottomMargin );

    iLineOffset = iTextPaneLayout.H() + topMargin + bottomMargin;

    }