src/screensaverindicatortext.cpp
author William Roberts <williamr@symbian.org>
Mon, 08 Mar 2010 21:43:27 +0000
branchCompilerCompatibility
changeset 7 c89cbdc66698
parent 0 040fcad49f44
permissions -rw-r--r--
Create CompilerCompatibility branch
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/*
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* Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:   CScreensaverIndicatorText implementation.
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*
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*/
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#include <AknLayoutFont.h>
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#include <barsread.h>
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#include "screensaverindicatortext.h"
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// -----------------------------------------------------------------------------
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// CScreensaverTextIndicator::Draw
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// -----------------------------------------------------------------------------
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//
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void CScreensaverIndicatorText::Draw( CWindowGc& aGc ) const
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    {
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    if ( iFont )
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        {
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        aGc.UseFont( iFont );
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        }
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    aGc.SetPenColor( iTextColor );
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    // Draw normal bidi text
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    TBidiText* bidi= NULL;
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    TRAPD( err, bidi = TBidiText::NewL( iText, 1 ) );
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    if ( err == KErrNone )
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        {
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        bidi->WrapText( Width(), *iFont, NULL );
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        if ( iTextRect.IsEmpty() )
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            {
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            bidi->DrawText( aGc, iTopLeft );
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            }
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        else
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            {
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            TPoint pt = iTextRect.iTl;
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            pt.iY += iTextOffset;
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            bidi->DrawText( aGc, pt );
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            }
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        delete bidi;
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        }
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverTextIndicator::ConstructL
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// -----------------------------------------------------------------------------
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//
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void CScreensaverIndicatorText::ConstructL( TResourceReader &aReader,
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        TUint32 aBgColor, TUint aTextColor )
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    {
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    CScreensaverIndicator::ConstructL( aReader, aBgColor, aTextColor );
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    iFont = AknLayoutUtils::FontFromId( aReader.ReadInt32() );
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    if ( !iFont )
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        {
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        iFont = LatinPlain12();
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        }
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverTextIndicator::SetupDrawingParameters
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// -----------------------------------------------------------------------------
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//
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void CScreensaverIndicatorText::SetupDrawingParameters( const TPoint& aCorner,
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        const TRect& aParentRect )
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    {
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    iVisible = EFalse;
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    if ( iText.Length() <= 0 )
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        {
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        return;
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        }
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    TInt textWidth = ( iFont ? iFont->TextWidthInPixels(iText) + 1
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            : iText.Length() * 11 ); // Should be enough for APAC too
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    iRect = TRect( 0, 0, textWidth, aParentRect.Size().iHeight );
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    iTopLeft.iX = aCorner.iX;
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    if ( iAlignment == ESsAlignRight )
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        {
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        // Change topright to topleft.      
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        iTopLeft.iX -= iRect.Size().iWidth;
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        }
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    iTopLeft.iY = aCorner.iY + ( aParentRect.Size().iHeight / 2 ) + ( ( aParentRect.Size().iHeight - iFont->HeightInPixels() ) / 2 ) + 2;
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    // Make sure text rect is not used
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    iTextRect.SetRect( 0, 0, 0, 0 );
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    iVisible = ETrue;
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverTextIndicator::ConstructL
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// -----------------------------------------------------------------------------
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//
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TBool CScreensaverIndicatorText::CheckVisibilityConditions() const
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    {
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    return ( iText.Length() > 0 ? ETrue : EFalse );
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverTextIndicator::ConstructL
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// -----------------------------------------------------------------------------
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//
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void CScreensaverIndicatorText::Payload( TIndicatorPayload &aPayload ) const
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    {
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    aPayload.iType = EPayloadTypeText;
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    aPayload.iText = iText;
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    aPayload.iInteger = -1;
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    aPayload.iIsDisplayed = Visible();
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    aPayload.iIcon = NULL;
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverTextIndicator::ConstructL
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// -----------------------------------------------------------------------------
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//
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void CScreensaverIndicatorText::SetPayload( const TIndicatorPayload& aPayload )
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    {
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    if ( aPayload.iType != EPayloadTypeText )
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        {
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        return;
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        }
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    if ( aPayload.iText.Length() > iText.MaxLength() )
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        {
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        return; // Don't panic.      
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        }
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    iText = aPayload.iText;
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverTextIndicator::SetTextLayout
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// Sets text position and font
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// -----------------------------------------------------------------------------
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//
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void CScreensaverIndicatorText::SetTextLayout( TAknLayoutText& aLayout, TInt aX )
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    {
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    // Font from layout
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    iFont = aLayout.Font();
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    // Layout MUST have a font
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    ASSERT( iFont != NULL );
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    // Vertical dimension of text rect from layout
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    iTextRect = aLayout.TextRect();
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    // Calculate text offset from rect top
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    const CAknLayoutFont* layoutFont =
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            CAknLayoutFont::AsCAknLayoutFontOrNull( iFont );
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    if ( layoutFont )
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        {
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        iTextOffset = layoutFont->TextPaneTopToBaseline();
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        }
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    else
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        {
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        iTextOffset = iFont->AscentInPixels();
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        }
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    // X-pos from parameter
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    iTextRect.iTl.iX = aX;
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    // Initially set indicator rect (this may later be overridden by SetWidth())
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    iRect = TRect( 0, 0, PreferredWidth(), aLayout.TextRect().Height() );
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    // If right-aligned, the X-pos indicates right edge - switch to left
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    if ( iAlignment == ESsAlignRight )
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        {
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        // Change topright to topleft.      
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        iTextRect.iTl.iX -= Width(); // iRect.Size().iWidth;  
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        }
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    // Indicator width = text rect width
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    iTextRect.SetWidth( Width() );
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverTextIndicator::PreferredWidth
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// Gets preferred indicator width
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// -----------------------------------------------------------------------------
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//
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TInt CScreensaverIndicatorText::PreferredWidth()
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    {
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    TInt textWidth = ( iFont ? iFont->TextWidthInPixels( iText ) + 1
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            : iText.Length() * 11 ); // Should be enough for APAC too
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    return textWidth;
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverTextIndicator::SetWidth
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// Sets indicator width
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// -----------------------------------------------------------------------------
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//
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void CScreensaverIndicatorText::SetWidth( TInt iWidth )
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    {
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    iRect.SetWidth( iWidth );
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverTextIndicator::SetXPos
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// Sets indicator X-position (new layout)
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// -----------------------------------------------------------------------------
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//
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void CScreensaverIndicatorText::SetXPos( TInt aX )
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    {
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    iTopLeft.iX = aX;
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    if ( iAlignment == ESsAlignRight )
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        {
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        // Change topright to topleft.      
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        iTopLeft.iX -= iRect.Size().iWidth;
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        }
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    }
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// End of file