author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 14 Sep 2010 20:58:58 +0300 | |
branch | RCL_3 |
changeset 88 | 3321d3e205b6 |
parent 83 | 5456b4e8b3a8 |
child 102 | ba63c83f4716 |
permissions | -rw-r--r-- |
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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: CMmListBox |
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* Version : %version: MM_22.1.19 % << Don't touch! Updated by Synergy at check-out. |
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* |
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*/ |
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#ifndef C_MMLISTBOX_H |
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#define C_MMLISTBOX_H |
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#include <e32std.h> |
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#include <e32base.h> |
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#include <aknlists.h> |
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#include <e32cmn.h> |
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class CMmListBoxModel; |
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class CMmListBoxItemDrawer; |
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class CMmMarqueeAdapter; |
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class CMmWidgetContainer; |
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class CMmTemplateLibrary; |
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/** |
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* CMmListBox |
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* |
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* @code |
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* @endcode |
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* @lib mmwidgets |
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* @since S60 v3.0 |
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* @ingroup group_mmwidgets |
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*/ |
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NONSHARABLE_CLASS( CMmListBox ) : public CEikFormattedCellListBoxTypedef |
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{ |
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public: |
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/** |
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* Two-phased constructor. |
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* |
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* @since S60 v3.0 |
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* @param aParent Parent control. |
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* @param aFlags Flags. |
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* @param aTemplateLibrary Template library for drawer. |
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* @return List box. |
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*/ |
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static CMmListBox* NewL( const CCoeControl* aParent, TInt aFlags, |
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CMmTemplateLibrary* aTemplateLibrary ); |
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/** |
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* Two-phased constructor. |
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* |
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* @since S60 v3.0 |
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* @param aParent Parent control. |
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* @param aFlags Flags. |
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* @param aTemplateLibrary Template library for drawer. |
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* @return List box. |
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*/ |
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static CMmListBox* NewLC( const CCoeControl* aParent, TInt aFlags, |
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CMmTemplateLibrary* aTemplateLibrary ); |
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/** |
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* Destructor. |
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* |
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* @since S60 v3.0 |
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*/ |
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virtual ~CMmListBox(); |
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/** |
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* Gets the listbox model. |
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* |
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* @since S60 v3.0 |
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* @return Listbox model. |
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*/ |
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CMmListBoxModel * MmModel(); |
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/** |
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* Sets the listbox model. |
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* |
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* @since S60 v3.0 |
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* @param aMmModel The model to be set. |
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*/ |
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void SetMmModel( CMmListBoxModel* aMmModel ); |
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/** |
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* Creates the view class instance. |
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* |
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* @since S60 v3.0 |
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* @return Listbox view. |
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*/ |
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CListBoxView* MakeViewClassInstanceL(); |
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/** |
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* Creates the item drawer for listbox. |
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* |
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* @param aTemplateLibrary Template library for drawer. |
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* @since S60 v3.0 |
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*/ |
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void CreateItemDrawerL( CMmTemplateLibrary* aTemplateLibrary ); |
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/** |
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* Sets the flag. |
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* |
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* @since S60 v3.0 |
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* @param aFlag Avkon list flag |
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*/ |
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void SetListFlag( TInt aFlag ); |
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/** |
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* Clears the flag. |
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* |
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* @since S60 v3.0 |
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* @param aFlag Avkon list flag |
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*/ |
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void ClearListFlag( TInt aFlag ); |
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public: // from base class CCoeControl. |
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/** |
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* From CCoeControl. |
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* Handles pointer events. |
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* |
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* @since S60 v3.0 |
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* @param aPointerEvent Pointer event. |
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*/ |
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void HandlePointerEventL( const TPointerEvent& aPointerEvent ); |
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/** |
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* From base class. |
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* |
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* @since S60 v3.0 |
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* @param aKeyEvent Key event. |
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* @param aType Event code. |
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*/ |
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TKeyResponse OfferKeyEventL( const TKeyEvent& aKeyEvent, |
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TEventCode aType ); |
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/** |
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* Adjusts the given rectangle. |
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* |
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* @since S60 v3.0 |
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* @param aRect Rectangle to be adjusted. |
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* @return Error code. |
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*/ |
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TInt AdjustRectHeightToWholeNumberOfItems( TRect& aRect ) const; |
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/** |
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* Sets item drawer and view background context. |
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* |
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* @since S60 v3.0 |
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* @param aBgContext Background context. |
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*/ |
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void SetItemDrawerAndViewBgContext( |
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CAknsBasicBackgroundControlContext * aBgContext ); |
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/** |
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* Updates scrollbar. |
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* |
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* @since S60 v3.0 |
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*/ |
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void UpdateScrollBarsL(); |
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/** |
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* Special version of Update scrollbar that never calls DrawNow() |
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*/ |
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void UpdateScrollBarsNoRedrawL(); |
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/** |
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* Checks if all items fit in view rectangle. |
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* |
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* @since S60 v3.0 |
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* @return Do all items fit in view rectangle. |
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*/ |
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TBool AllItemsFitInViewRect(); |
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/** |
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* Handles scrollbar visibility change. |
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* |
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* @since S60 v3.0 |
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* @return Is redraw needed. |
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*/ |
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TBool HandleScrollbarVisibilityChangeL(); |
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/** |
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* Sets marquee adapter. |
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* |
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* @since S60 v3.0 |
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* @param aAdapter Marquee adapter. |
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*/ |
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void SetMarqueeAdapter( CMmMarqueeAdapter* aAdapter ); |
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/** |
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* Notifies that marquee is being drawn. |
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* |
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* @since S60 v3.0 |
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* @param aIsMarqueeBeingDrawn Is marquee being drawn. |
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*/ |
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void SetMarqueeDrawing( TBool aIsMarqueeBeingDrawn ); |
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/** |
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* Handles item removal. redraws view, updates scrollbar. |
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* |
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* @since S60 v3.0 |
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*/ |
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void HandleItemRemovalL(); |
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/** |
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* Redraws items in view if it is necessary. |
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* |
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* @since S60 v3.0 |
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* @param aPreviousCurrent Previously current item index. |
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* @param aCurrent Current item index. |
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* |
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* @return true if anything was drawn. |
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*/ |
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TBool RedrawIfNecessary( TInt aPreviousCurrent, TInt aCurrent ); |
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/** |
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* Overridden from base class to allow for drawing scrollbar |
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* background in mirrored layout. |
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* |
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* @param aRect clipping rect |
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*/ |
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void Draw(const TRect& aRect) const; |
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/** |
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* Draws the listbox view. |
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* |
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* @since S60 v5.0 |
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*/ |
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void DrawView(); |
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/** |
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* Set the vertical item offset; |
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* @param aOffset The offset to set to the widget. |
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* |
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* @since S60 v5.0 |
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*/ |
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void SetVerticalItemOffset( TInt aOffset ); |
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/** |
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* Gets the current widget vertical item offset. |
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* |
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* @since S60 v5.0 |
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* @return The current widget vertical item offset. |
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*/ |
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TInt VerticalItemOffset() const; |
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/** |
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* Simply sets the item height members in widget and view. |
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*/ |
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void SetItemHeight( TInt aItemHeight ); |
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|
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/** |
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* Updates scrollbar thumbs. |
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*/ |
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void UpdateScrollBarThumbs(); |
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|
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/** |
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* Counts the number of component controls which this component owns. |
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*/ |
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TInt CountComponentControls() const; |
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|
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/** |
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* Disables/enables child component (scrollbar) drawing. |
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*/ |
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void SetDisableChildComponentDrawing( TBool aDisable ); |
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|
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/** |
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* Handles scrolling event. |
|
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* |
|
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* @since S60 v3.0 |
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* @param aScrollBar Scrollbar being scrolled. |
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* @param aEventType Type of scrollbar event. |
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*/ |
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void HandleScrollEventL( CEikScrollBar* aScrollBar, |
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TEikScrollEvent aEventType ); |
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|
83 | 288 |
private: |
289 |
/** |
|
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* Default constructor. |
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* |
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* @since S60 v3.0 |
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*/ |
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CMmListBox(); |
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|
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/** |
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* 2nd phase constructor. |
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* |
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* @since S60 v3.0 |
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* @param aParent Parent control. |
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* @param aFlags Flags. |
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* @param aTemplateLibrary Template library for drawer. |
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*/ |
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void ConstructL( const CCoeControl* aParent, TInt aFlags, |
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CMmTemplateLibrary* aTemplateLibrary ); |
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|
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/** |
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* Handles pointer events when edit mode is enabled. |
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* |
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* This method is only called during edit mode. It selectively passes |
311 |
* only some of the pointer events to CAknGrid::HandlePointerEventL |
|
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* in order to disable flicking and panning. |
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* |
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* @param aPointerEvent pointer event |
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*/ |
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void HandlePointerEventInEditModeL( const TPointerEvent& aPointerEvent ); |
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|
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/** |
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* Scrolls the view if pointer is close to the top/bottom edge. |
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* |
83 | 321 |
* This method is used only when edit mode is active. In a way it |
322 |
* brings back the focus based scrolling behavior that was present |
|
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* in CAknGrid before ODE scrolling was introduced. |
|
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*/ |
|
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void HandleScrollingInEditMode( const TPointerEvent& aPointerEvent ); |
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|
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/** |
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* Checks if pointer position is within the scroll-triggering area. |
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* |
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* @param aPointerEvent pointer event |
331 |
* @return true if pointer above the top scrolling threshold. |
|
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*/ |
|
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TBool IsPointerInTopScrollingThreshold( |
|
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const TPointerEvent& aPointerEvent ) const; |
|
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||
336 |
/** |
|
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* Checks if pointer position is within the scroll-triggering area. |
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* |
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* @param aPointerEvent pointer event |
340 |
* @return true if pointer below the bottom scrolling threshold. |
|
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*/ |
|
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TBool IsPointerInBottomScrollingThreshold( |
|
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const TPointerEvent& aPointerEvent ) const; |
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|
83 | 345 |
/** |
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* Scrolls the view if the pointer is near top/bottom edge of the screen. |
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* |
83 | 348 |
* Assumes that current item index is the index of the item under the |
349 |
* pointer. The time value returned is based on the distance of the pointer |
|
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* from the top/bottom edge of the grid view (this makes the scrolling speed |
|
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* dependent of how close the pointer is to the edge). |
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* If there is no need to continue scrolling because the beginning/end of |
|
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* the list has already been reached, 0 is returned. |
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* |
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* @param aPointerEvent pointer event |
356 |
* @return time to wait before calling this method again (in microseconds) |
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* or 0 if already at the beginning/end of the list |
|
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*/ |
|
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TInt ScrollIfNeeded( const TPointerEvent& aPointerEvent ); |
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|
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/** |
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* Minimal scrolling (setting top item index and vertical offset) with |
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* boundary checking and WITHOUT redrawing. |
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* |
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* @param aDistanceInPixels Distance to scroll. |
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*/ |
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void ScrollWithoutRedraw( TInt aDistanceInPixels ); |
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|
83 | 369 |
/** |
370 |
* Ensures that elements are drawn correctly when mirrored layout is |
|
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* used and scrollbar is visible by shifting ViewRect to the right. |
|
372 |
*/ |
|
373 |
void FixViewForMirroredLayout(); |
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83 | 375 |
/** |
376 |
* Redraws the background under the vertical scrollbar in mirrored layout. |
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* |
83 | 378 |
* The reason such method is needed is that view rectangle is shifted |
379 |
* to the right in mirrored layout and does not cover the scrollbar |
|
380 |
* area. In normal (non-mirrored) mode this method does nothing. |
|
381 |
*/ |
|
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void RedrawScrollbarBackground() const; |
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|
83 | 384 |
/** |
385 |
* Does actual handling of scroll events. |
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* |
83 | 387 |
* @param aScrollBar Scrollbar being scrolled. |
388 |
* @param aEventType Type of scrollbar event. |
|
389 |
*/ |
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void ProcessScrollEventL( CEikScrollBar* aScrollBar, |
83 | 391 |
TEikScrollEvent aEventType ); |
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|
83 | 393 |
private: // Data |
394 |
/** |
|
395 |
* Item drawer. |
|
396 |
*/ |
|
397 |
CMmListBoxItemDrawer* iMmDrawer; |
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|
83 | 399 |
/** |
400 |
* Multimedia Menu model. |
|
401 |
*/ |
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CMmListBoxModel* iMmModel; |
83 | 403 |
|
404 |
/** |
|
405 |
* marquee adapter. |
|
406 |
*/ |
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CMmMarqueeAdapter* iMarqueeAdapter; |
83 | 408 |
|
409 |
/** |
|
410 |
* Blocks scrollbar drawing. When this flag is set scrollbars components |
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* are blocked in the CountComponentControls() method; |
83 | 412 |
*/ |
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TBool iDisableChildComponentDrawing; |
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414 |
|
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/** |
83 | 416 |
* This member is only used in edit mode to store the position of the pointer |
417 |
* during EButton1Down event. |
|
418 |
*/ |
|
419 |
TPoint iButton1DownPos; |
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}; |
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|
83 | 422 |
#endif // MMLISTBOX_H |