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/*
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* Copyright (c) 2007 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: floating item
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*
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*/
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#include <e32math.h>
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#include <eiklbv.h>
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#include "mmfloatingitem.h"
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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TMmFloatingItem::TMmFloatingItem( TInt aDrawnIndex, TPoint aStartPosition,
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TMmFloatingItemType aType, TInt aAnimationFrames, CListBoxView* aView )
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{
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iView = aView;
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iSizeStep = 0;
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iZoomRatio = 1;
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iManualDelete = EFalse;
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if ( iView )
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{
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// item position is relative
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iItemPosition = aStartPosition - iView->ItemPos( 0 );
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}
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else
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{
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// item position is absolute
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iItemPosition = aStartPosition;
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}
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iDrawnItemIndex = aDrawnIndex;
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iType = aType;
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iFrames = aAnimationFrames;
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iFrameCounter = 0;
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CalculateSteps(TPoint(0,0));
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}
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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void TMmFloatingItem::SetPositionStep( TPoint aDiffetenceVector )
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{
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ASSERT( iFrames );
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iFrameCounter = 0;
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CalculateSteps( aDiffetenceVector );
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}
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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void TMmFloatingItem::CalculateSteps(TPoint aVector)
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{
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iPositionStep.Reset();
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TReal x = aVector.iX;
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TReal y = aVector.iY;
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TReal sx = 0.0;
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TReal sy = 0.0;
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for( TInt i = 0; i < iFrames; i++ )
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{
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TReal sin;
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Math::Sin( sin, (i+1) * KPi/iFrames + KPi * 3./2. );
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TReal xx = x * (0.5*( sin + 1.0 ) ) - sx;
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TReal yy = y * (0.5*( sin + 1.0 ) ) - sy;
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sx += xx;
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sy += yy;
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iPositionStep.At(i) = TPoint( xx, yy );
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}
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}
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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void TMmFloatingItem::SetSizeStep( TReal aStartSize, TReal aFinalSize )
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{
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ASSERT( iFrames );
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iFrameCounter = 0;
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iZoomRatio = aStartSize;
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iSizeStep = (aFinalSize - aStartSize) / iFrames;
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}
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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TBool TMmFloatingItem::MakeStep()
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{
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TBool ret(EFalse);
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if( iFrameCounter >= iFrames && iManualDelete == EFalse )
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{
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InvalidateFloatingItem();
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}
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else if( iFrameCounter < iFrames )
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{
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iItemPosition += iPositionStep[iFrameCounter];
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iZoomRatio += iSizeStep;
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ret = Abs(iPositionStep[iFrameCounter].iX) > 0
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|| Abs(iPositionStep[iFrameCounter].iY > 0)
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|| Abs(iSizeStep) > 0;
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iFrameCounter++;
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}
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return ret;
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}
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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void TMmFloatingItem::SetManualDelete(TBool aManual)
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{
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iManualDelete = aManual;
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}
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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TReal TMmFloatingItem::GetCurrentZoomRatio() const
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{
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return iZoomRatio;
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}
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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TMmFloatingItemType TMmFloatingItem::GetFloatingItemType() const
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{
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return iType;
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}
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TInt TMmFloatingItem::GetDrawnItemIndex() const
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{
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return iDrawnItemIndex;
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}
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TPoint TMmFloatingItem::GetItemPosition() const
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{
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TPoint ret;
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if ( iView )
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{
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// item position is relative
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ret = iItemPosition + iView->ItemPos( 0 );
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}
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else
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{
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// item position is absolute
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ret = iItemPosition;
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}
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return ret;
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}
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void TMmFloatingItem::InvalidateFloatingItem()
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{
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iDrawnItemIndex = KErrNotFound;
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}
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TBool TMmFloatingItem::IsFloatingItemValid() const
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{
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return GetDrawnItemIndex() != KErrNotFound
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&& iType != EPostDragRefreshItem
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&& iType != EPostHighlightChangeRefreshItem;
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}
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TBool TMmFloatingItem::IsManualDelete()
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{
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return iManualDelete;
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}
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TInt TMmFloatingItem::GetZoomingStatus()
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{
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return iSizeStep;
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}
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// End of file
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