menufw/menufwui/mmwidgets/src/mmgridview.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:40:49 +0200
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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:
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*
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*/
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#include <eikfrlbd.h>
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#include "mmgridview.h"
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#include "mmgrid.h"
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#include "mmlistboxitemdrawer.h"
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#ifdef RD_UI_TRANSITION_EFFECTS_LIST
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#include <aknlistloadertfx.h>
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#include <aknlistboxtfxinternal.h>
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#endif
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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CMmGridView::CMmGridView() :
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    iLastCurMove( ECursorFirstItem ), iOldIndex( KErrNotFound )
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    {
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    // No implementation required
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    }
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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CMmGridView::~CMmGridView()
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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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CMmGridView* CMmGridView::NewLC()
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    {
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    CMmGridView* self = new (ELeave)CMmGridView();
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    CleanupStack::PushL(self);
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    self->ConstructL();
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    return self;
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    }
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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CMmGridView* CMmGridView::NewL()
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    {
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    CMmGridView* self = CMmGridView::NewLC();
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    CleanupStack::Pop( self );
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    return self;
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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 CMmGridView::ConstructL()
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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 CMmGridView::DrawItem(TInt aItemIndex) const
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	{
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	CMmListBoxItemDrawer* itemDrawer =
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	        STATIC_CAST( CMmListBoxItemDrawer*, ItemDrawer() );
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	TSize size = itemDrawer->GetItemSize( 0, ETrue );
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	if ( itemDrawer->ItemCellSize() != size  )
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		{
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		const_cast<CMmGridView*>( this )->SetItemHeight(size.iHeight);
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		const_cast<CMmGridView*>( this )->SetColumnWidth(size.iWidth);
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		}
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	CAknGridView::DrawItem( aItemIndex );
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	}
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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TPoint CMmGridView::ItemPos( TInt aItemIndex ) const
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    {
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    if ( aItemIndex < 0 )
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        {
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        // let avkon handle the insane cases
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        return CAknGridView::ItemPos( aItemIndex );
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        }
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    if ( AknLayoutUtils::LayoutMirrored() )
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        {
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        const TInt colNum = NumberOfColsInView();
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        TInt itemCol = aItemIndex % colNum;
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        TInt mirroredItemCol = colNum - itemCol - 1;
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        aItemIndex = aItemIndex - itemCol + mirroredItemCol;
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        }
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    // return CAknGridView::ItemPos( aItemIndex );
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    return CorrectItemPos( aItemIndex );
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    }
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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TPoint CMmGridView::CorrectItemPos( TInt aItemIndex ) const
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    {
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    // it the assertion below fails, review this implementation to make sure that
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    // primary vertical case is handled correctly
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    ASSERT( !IsPrimaryVertical() );
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    ASSERT( aItemIndex >= 0 );
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    const TInt colNum = NumberOfColsInView();
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    TInt itemRow = aItemIndex / colNum;
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    TInt itemCol = aItemIndex % colNum;
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    TInt topItemRow = TopItemIndex() / colNum;
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//    __ASSERT_DEBUG( TopItemIndex() % colNum == 0, User::Invariant() );
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    // it is safe to assume that size between items is (0, 0) because we
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    // explicitly set such value in CMmGrid::DoSetupLayoutL
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    const TSize sizeBetweenItems( 0, 0 );
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    TPoint itemPos(
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        iViewRect.iTl.iX + itemCol *
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            ( ColumnWidth() + sizeBetweenItems.iWidth ),
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        iViewRect.iTl.iY + (itemRow - topItemRow) *
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            ( iItemHeight + sizeBetweenItems.iHeight ) + iVerticalOffset );
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    return itemPos;
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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 CMmGridView::XYPosToItemIndex( TPoint aPosition, TInt& aItemIndex ) const
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    {
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    if ( AknLayoutUtils::LayoutMirrored() )
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        {
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        aPosition.iX = iViewRect.Width() - ( aPosition.iX - iViewRect.iTl.iX );
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        }
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    return CAknGridView::XYPosToItemIndex( aPosition, aItemIndex );
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    }
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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CWindowGc* CMmGridView::Gc()
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    {
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    return iGc;
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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 CMmGridView::MoveCursorL( TCursorMovement aCursorMovement,
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        TSelectionMode aSelectionMode )
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    {
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#ifdef RD_UI_TRANSITION_EFFECTS_LIST
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    iLastCurMove = aCursorMovement;
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    iOldIndex = iCurrentItemIndex;
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#endif // RD_UI_TRANSITION_EFFECTS_LIST
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    CAknGridView::MoveCursorL( aCursorMovement, aSelectionMode );
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#ifdef RD_UI_TRANSITION_EFFECTS_LIST
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    iLastCurMove = ECursorFirstItem;
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    iOldIndex = KErrNotFound;
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#endif // RD_UI_TRANSITION_EFFECTS_LIST
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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 CMmGridView::UpdateSelectionL( TSelectionMode aSelectionMode )
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    {
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#ifdef RD_UI_TRANSITION_EFFECTS_LIST
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    if ( AknLayoutUtils::LayoutMirrored() )
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        {
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        MAknListBoxTfxInternal* api = CAknListLoader::TfxApiInternal( Gc() );
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        TInt row( 0 );
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        TInt col( 0 );
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        TInt newRow( 0 );
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        TInt newCol( 0 );
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        LogicalPosFromListBoxIndex( iOldIndex, row, col );
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        LogicalPosFromListBoxIndex( iCurrentItemIndex, newRow, newCol );
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        if ( api )
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            {
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            if ( iLastCurMove == CAknGridView::ECursorNextColumn )
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                {
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                if ( newCol < col || newRow != row )
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                    api->SetMoveType( MAknListBoxTfxInternal::EListNoMovement );
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                }
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            else if ( iLastCurMove == CAknGridView::ECursorPreviousColumn )
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                {
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                if ( newCol > col || newRow != row )
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                    api->SetMoveType( MAknListBoxTfxInternal::EListNoMovement );
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                }
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            }
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        }
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#endif // RD_UI_TRANSITION_EFFECTS_LIST
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    CAknGridView::UpdateSelectionL( aSelectionMode );
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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 CMmGridView::Draw(const TRect* aClipRect) const
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    {
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    DoDraw( aClipRect );
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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 CMmGridView::DoDraw(const TRect* aClipRect) const
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    {
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    CMmListBoxItemDrawer* itemDrawer = static_cast< CMmListBoxItemDrawer*> ( ItemDrawer() );
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    TBool drawingInitiated(EFalse);
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    if ( CAknEnv::Static()->TransparencyEnabled() &&
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    		iWin && iWin->GetDrawRect() == TRect::EUninitialized )
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    	{
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    	TRect a;
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    	if (!aClipRect || *aClipRect == TRect(0,0,0,0) )
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    		{
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    		a = ViewRect();
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    		aClipRect = &a;
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    		}
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    	drawingInitiated=ETrue;
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		iWin->Invalidate( *aClipRect );
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		iWin->BeginRedraw( *aClipRect );
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    	}
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    CAknGridView::Draw( aClipRect );
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	if ( aClipRect )
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	    {
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    	TRect rect(*aClipRect);
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    	TInt lastItemInView = (iModel->NumberOfItems() <= BottomItemIndex() )
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    	    ? iModel->NumberOfItems()-1 : BottomItemIndex();
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    	rect.iTl.iY = ItemPos( lastItemInView ).iY + ItemSize( lastItemInView ).iHeight;
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//      iGc->SetClippingRect( rect );
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//		removed to prevent non-redraw drawing. Was present to prevent out of view drawing when effects are on.
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//      could be removed because effects were disabled at some point in edit mode to enhance performance.
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    	itemDrawer->DrawFloatingItems( rect );
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//      iGc->CancelClippingRect();
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	    }
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//    if (aClipRect)
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//    	{
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//    	const_cast< CMmGridView* >(this)->Gc()->DrawRect(*aClipRect);
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//    	}
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    if ( CAknEnv::Static()->TransparencyEnabled() &&
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    		iWin && drawingInitiated )
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    	{
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    	drawingInitiated = EFalse;
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    	iWin->EndRedraw( );
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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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TInt CMmGridView::VerticalItemOffset() const
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	{
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	return iVerticalOffset;
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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 CMmGridView::SetItemHeight(TInt aItemHeight)
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	{
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	//	we need to update the iItemHeight member in grid also (there are two different item height value holders - in grid and here in grid view)
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	CMmListBoxItemDrawer* itemDrawer =
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	        STATIC_CAST( CMmListBoxItemDrawer*, ItemDrawer() );
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	static_cast<CMmGrid*>(itemDrawer->Widget())->SetItemHeight( aItemHeight );
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	CAknGridView::SetItemHeight(aItemHeight);
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	}
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//End of file