/*

* Copyright (c) 2002-2007 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:  Default label control for the status pane's navigation pane.

*

*/

// SYSTEM INCLUDE FILES

#include <gdi.h>

#include <eikspane.h>

#include <AknsDrawUtils.h>

#include <bidivisual.h>

#include <biditext.h>

#include <aknlayoutscalable_avkon.cdl.h>

#include <AknTasHook.h>

// USER INCLUDE FILES

#include "aknnavilabel.h"

#include "AknPanic.h"

#include "AknUtils.h"

#include "aknconsts.h"

#include "AknBidiTextUtils.h"

#include "AknStatuspaneUtils.h"

#include "aknenv.h"

#include "aknnavide.h"

#include <aknnavide.h>

NONSHARABLE_CLASS( CAknNaviLabelExtension ) : public CBase

    {

public:

    static CAknNaviLabelExtension* NewL();

    ~CAknNaviLabelExtension();

    void SetVisualBufferSizeL( TInt aSize );

private:

    CAknNaviLabelExtension();

    void ConstructL();

public: //data

    HBufC* iVisualTextBuffer;

    };

CAknNaviLabelExtension* CAknNaviLabelExtension::NewL()

    {

    CAknNaviLabelExtension* self = new (ELeave) CAknNaviLabelExtension;

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

CAknNaviLabelExtension::CAknNaviLabelExtension()

    {

    }

CAknNaviLabelExtension::~CAknNaviLabelExtension()

    {

    delete iVisualTextBuffer;

    }

void CAknNaviLabelExtension::ConstructL()

    {

    iVisualTextBuffer = HBufC::NewL(0);

    }

void CAknNaviLabelExtension::SetVisualBufferSizeL( TInt aSize )

    {

    if ( aSize <= iVisualTextBuffer->Des().MaxLength() )

        {

        return;

        }

    HBufC* tempBuf = HBufC::NewL( aSize );

    delete iVisualTextBuffer;

    iVisualTextBuffer = tempBuf;

    }

EXPORT_C CAknNaviLabel::~CAknNaviLabel()

    {

    AKNTASHOOK_REMOVE();

    delete iText;

    delete iExtension;

    }

EXPORT_C CAknNaviLabel::CAknNaviLabel()

    {

    AKNTASHOOK_ADD( this, "CAknNaviLabel" );

    }

EXPORT_C void CAknNaviLabel::SetTextL( const TDesC& aText )

    {

    __ASSERT_DEBUG( &aText, Panic( EAknPanicNullPointer ) );

    if ( !iExtension )

        {

        iExtension = CAknNaviLabelExtension::NewL();

        }

    User::LeaveIfError( AknBidiTextUtils::PrepareRunInfoArray( aText ) );

    HBufC* newText = aText.AllocLC();

    iExtension->SetVisualBufferSizeL(

        aText.Length() + KAknBidiExtraSpacePerLine );

    CleanupStack::Pop( newText );

    delete iText; // after all allocations succeed

    iText = newText;

    SizeChanged();

    }

EXPORT_C void CAknNaviLabel::SetNaviLabelType( TNaviLabelType aLabelType )

    {

    iLabelType = aLabelType;

    }

EXPORT_C CAknNaviLabel::TNaviLabelType CAknNaviLabel::NaviLabelType()

    {

    return iLabelType;

    }

EXPORT_C void CAknNaviLabel::SizeChanged()

    {

    if ( !iExtension )

        {

        return;

        }

    TRect parentRect( Rect() );

    CGraphicsContext::TTextAlign alignment = CGraphicsContext::ELeft;

    iRightOffset = 0;

    TAknLayoutText textLayout( LayoutText() );

    switch ( iLabelType )

        {

        case ENavigationLabel:

            {

            TRect textRect( textLayout.TextRect() );

            TRect rect( Rect() );

            // because this components rect is not same as navipane

            // in LAF some calculations are needed.

            // The left margin amount of navipane that this labels

            // rect does not cover.

            TInt leftOutsideMargin = 0;

            // The right margin amount of navipane that this labels

            // rect does not cover.

            TInt rightOutsideMargin = 0;

            leftOutsideMargin = rect.iTl.iX;

            rightOutsideMargin = parentRect.iBr.iX - rect.iBr.iX;

            if ( leftOutsideMargin < 0 )

                {

                leftOutsideMargin = 0;

                }

            if ( rightOutsideMargin < 0 )

                {

                rightOutsideMargin = 0;

                }

            iLeftMargin  = textRect.iTl.iX - leftOutsideMargin;

            iRightMargin = rect.iBr.iX - textRect.iBr.iX;

            iFont        = textLayout.Font();

            iColor       = textLayout.Color();

            alignment    = textLayout.Align();

            }

            break;

        case EAdditionalInfoLabel: // fallthrough, these use same properties.

        case EHintText:

            {

            TRect textRect( textLayout.TextRect() );

            iLeftMargin  = textRect.iTl.iX;

            iRightMargin = parentRect.iBr.iX - textRect.iBr.iX;

            iFont        = textLayout.Font();

            iColor       = textLayout.Color();

            alignment    = textLayout.Align();

            }

            break;

        default:

            break;

        }

    TInt width = WidthInsideMargins();

    if ( width < 0 )

        {

        width = 0;

        }

    TPtr truncated = iExtension->iVisualTextBuffer->Des();

    AknBidiTextUtils::ConvertToVisualAndClip(

        *iText,

        truncated,

        *iFont,

        width,

        width );

    if ( alignment == CGraphicsContext::ECenter )

        {

        // Center the text. Must inform the text measurement algorithm that

        // the text is in visual, not logical order.

        CFont::TMeasureTextInput input;

        input.iFlags = CFont::TMeasureTextInput::EFVisualOrder;

        TInt textLength = iFont->MeasureText( truncated, &input );

        iRightOffset = ( width - textLength ) / 2;

        }

    }

EXPORT_C void CAknNaviLabel::Draw( const TRect& /*aRect*/ ) const

    {

    if ( !iExtension )

        {

        return;

        }

    CWindowGc& gc = SystemGc();

    TRect rect( Rect() );

    gc.UseFont( iFont );

    TRgb color = iColor;

    MAknsSkinInstance* skin = AknsUtils::SkinInstance();

    TAknLayoutText layoutText( LayoutText() );

    if ( AknStatuspaneUtils::StaconPaneActive() ||

         AknStatuspaneUtils::FlatLayoutActive() )

        {

        AknsUtils::GetCachedColor( skin,

                                   color,

                                   KAknsIIDQsnTextColors,

                                   EAknsCIQsnTextColorsCG43 );

        }

    else

        {

        AknsUtils::GetCachedColor( skin,

                                   color,

                                   KAknsIIDQsnTextColors,

                                   EAknsCIQsnTextColorsCG2 );

        }

    layoutText.DrawText( gc, *iText, ETrue, color );

    }

EXPORT_C void CAknNaviLabel::HandlePointerEventL(

    const TPointerEvent& aPointerEvent )

    {

    CAknControl::HandlePointerEventL( aPointerEvent );

    }

EXPORT_C void* CAknNaviLabel::ExtensionInterface( TUid /*aInterface*/ )

    {

    return NULL;

    }

TInt CAknNaviLabel::WidthInsideMargins() const

    {

    TInt width = Rect().Width() - iLeftMargin - iRightMargin;

    return width;

    }

TAknLayoutText CAknNaviLabel::LayoutText() const

    {

    TRect parentRect( CAknNavigationDecorator::DecoratedControlRect(

        CAknNavigationDecorator::ENaviLabel ) );

    TAknWindowLineLayout naviPaneLayout;

    TAknWindowLineLayout naviTextPaneLayout;

    TAknTextLineLayout layout;

    // In flat status pane with narrow layout we have another layout

    TBool flatNarrow = AknStatuspaneUtils::FlatLayoutActive() &&

                       parentRect.Width() > Rect().Width();

    if ( flatNarrow )

        {

        parentRect = Rect();

        }

    if ( AknStatuspaneUtils::SmallLayoutActive() )

        {

        layout = AknLayoutScalable_Avkon::status_small_pane_t1( 0 );

        }

    else

        {

        switch ( iLabelType )

            {

            case ENavigationLabel:

                {

                if ( flatNarrow )

                    {

                    naviPaneLayout = AknLayoutScalable_Avkon::navi_navi_pane_srt().LayoutLine();

                    naviTextPaneLayout = AknLayoutScalable_Avkon::navi_navi_text_pane_srt().LayoutLine();

                    layout = TAknWindowComponentLayout::ComposeText( naviPaneLayout,

                                TAknWindowComponentLayout::ComposeText( naviTextPaneLayout,

                                    AknLayoutScalable_Avkon::navi_navi_text_pane_srt_t1().LayoutLine() ) );

                    }

                else

                    {

                    naviPaneLayout = AknLayoutScalable_Avkon::navi_navi_pane().LayoutLine();

                    naviTextPaneLayout = AknLayoutScalable_Avkon::navi_navi_text_pane().LayoutLine();

                    layout = TAknWindowComponentLayout::ComposeText( naviPaneLayout,

                                TAknWindowComponentLayout::ComposeText( naviTextPaneLayout,

                                    AknLayoutScalable_Avkon::navi_navi_text_pane_t1().LayoutLine() ) );

                    }

                }

                break;

            case EAdditionalInfoLabel:

                {

                if ( flatNarrow )

                    {

                    naviTextPaneLayout = AknLayoutScalable_Avkon::navi_text_pane_srt(1).LayoutLine();

                    layout = TAknWindowComponentLayout::ComposeText( naviTextPaneLayout,

                                AknLayoutScalable_Avkon::navi_text_pane_srt_t1().LayoutLine() );

                    }

                else

                    {

                    naviTextPaneLayout = AknLayoutScalable_Avkon::navi_text_pane(1).LayoutLine();

                    layout = TAknWindowComponentLayout::ComposeText( naviTextPaneLayout,

                                AknLayoutScalable_Avkon::navi_text_pane_t1().LayoutLine() );

                    }

                }

                break;

            case EHintText:

                {

                if ( flatNarrow )

                    {

                    naviTextPaneLayout = AknLayoutScalable_Avkon::navi_text_pane_srt(0).LayoutLine();

                    layout = TAknWindowComponentLayout::ComposeText( naviTextPaneLayout,

                                AknLayoutScalable_Avkon::navi_text_pane_srt_t1().LayoutLine() );

                    }

                else

                    {

                    naviTextPaneLayout = AknLayoutScalable_Avkon::navi_text_pane(0).LayoutLine();

                    layout = TAknWindowComponentLayout::ComposeText( naviTextPaneLayout,

                                AknLayoutScalable_Avkon::navi_text_pane_t1().LayoutLine() );

                    }

                }

                break;

            default:

                break;

            }

        }

    // In stacon pane text justification depends on which side the

    // soft keys are. We change justification here manually because

    // the LAF data does not support this yet. So this code overides also

    // A & H mirroring which is supposed to be not used in stacon pane anyway.

    if ( AknStatuspaneUtils::StaconPaneActive() &&

         layout.iJ != ELayoutAlignCenter )

        {

        if ( AknStatuspaneUtils::StaconSoftKeysLeft() )

            {

            layout.iJ = ELayoutAlignRight;

            }

        else

            {

            layout.iJ = ELayoutAlignLeft;

            }

        }

    // In flat status pane we change justification here manually because

    // the LAF data does not support this yet. This way we avoid odd looking

    // situation where navitexts are in the middle of the status pane area.

    // Right side is more sensible place (left in A&H).

    else if ( AknStatuspaneUtils::FlatLayoutActive() &&

              layout.iJ != ELayoutAlignCenter )

        {

        if ( AknLayoutUtils::LayoutMirrored() )

            {

            layout.iJ = ELayoutAlignLeft;

            }

        else

            {

            layout.iJ = ELayoutAlignRight;

            }

        }

    TAknLayoutText textLayout;

    textLayout.LayoutText( parentRect, layout );

    return textLayout;

    }

//  End of File