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/*
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* Copyright (c) 2009 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: Taskswitcher Fast Swap area UI
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*
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*/
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#ifndef TSFASTSWAPGRID_H_
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#define TSFASTSWAPGRID_H_
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#include <AknGrid.h>
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#include <aknconsts.h>
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#include "tsdevicestate.h"
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class CAknsFrameBackgroundControlContext;
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class CTsFastSwapTimer;
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/**
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* Observer for handling fast swap grid events
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*/
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class MTsFastSwapGridObserver
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{
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public:
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/**
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* Called when close icon is tapped on the grid item.
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*
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* @param aItemIdx index of the the item for which close icon
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* has been tapped
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*/
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virtual void HandleCloseEventL( TInt aItemIdx ) = 0;
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};
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class MTsFastSwapTimerObserver
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{
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public:
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/**
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* Called when timer is completed
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*/
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virtual void TimerCompletedL( CTsFastSwapTimer* aSource ) = 0;
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};
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/**
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* Avkon grid implementing custom item drawer
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*/
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class CTsFastSwapGrid:
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public CAknGrid,
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public MTsDeviceStateObserver,
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public MTsFastSwapTimerObserver
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{
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public: // enums
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enum TFastSwapGridBehaviour
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{
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// Highlight always visible
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EHybrid,
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// Touch only highlight handling
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ETouchOnly
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};
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public: // Constructor and destructor
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CTsFastSwapGrid();
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~CTsFastSwapGrid();
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void ConstructL( const CCoeControl* aParent );
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public: // From CCoeControl
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void HandlePointerEventL( const TPointerEvent &aPointerEvent );
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void HandleResourceChange( TInt aType );
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void SizeChanged();
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void Draw( const TRect& aRect ) const;
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public: //From MTsDeviceStateObserver
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/**
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* Called when a change, to which the observer is registered,
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* has happened.
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*/
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virtual void HandleDeviceStateChanged( TChangeType aChangeType );
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public: // New functions
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/**
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* Sets fast swap grid observer
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*/
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void SetFastSwapGridObserver( MTsFastSwapGridObserver* aObserver );
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/**
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* Set indexes of items which can be closed.
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* Copies item index array.
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*/
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void SetCloseItemsL( RArray<TInt>& aItemIndex );
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/**
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* Checks if the item of given index is closable
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*/
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TBool CanCloseItem( TInt aItemIndex );
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/**
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* Checks if the given item's close icon has been tapped.
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*/
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TBool IsItemCloseHit( TInt aItemIndex );
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/**
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* Resets index of the item that has been close icon hit
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*/
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void ResetCloseHit();
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/**
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* Sets color for the screenshot stroke.
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*
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* @param aColor color for the thumbnail
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* @param aHighlightedColor color for thumbnail when item is highlighted
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*/
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void SetStrokeColors( TRgb aColor,
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TRgb aHighlightedColor );
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/**
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* Sets items for which stroke will be drawn
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*
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* @param aItemIndex array of item indexes for which stroke
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* is drawn
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*/
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void SetStrokeItemsL( RArray<TInt>& aItemIndex );
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/**
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* Sets grid behaviour
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*
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* @param aBehaviour behaviour to be set
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*/
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void SetGridBehaviour( TFastSwapGridBehaviour aBehaviour );
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/**
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* Getter for grid behaviour
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*
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* @return girds behaviour
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*/
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TFastSwapGridBehaviour GridBehaviour();
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/**
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* Shows highlight. In touch only behaviour highlight
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* will be shown only for ammount of time.
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*/
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void ShowHighlight();
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/**
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* Hides highlight.
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*/
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void HideHighlight();
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/**
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* Checks if the highlight is currently visible.
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*
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* @return ETrue if highlight is visible
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* EFalse if highlight is not visible
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*/
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TBool IsHighlightVisible();
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/**
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* Sets visible view, items outside of view will not be drawn
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*/
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void SetVisibleViewRect( const TRect aRect );
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/**
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* Returns visible view. Items outside of visible rectangle are not drawn.
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*/
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TRect VisibleViewRect();
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/**
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* Updates layout data for item drawer. Should be called when
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* layout maybe out of date
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*/
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void UpdateItemDrawerLayoutDataL();
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/**
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* Enables/disables avkon event handling.
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*
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* @param aEnable if set to ETrue, pointer events will be forwarded
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* to CAknGrid base class if necessary. If set to EFalse,
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* no pointer events will be forwarded.
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*/
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void EnableAknEventHandling( TBool aEnable );
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private: // From CAknGrid
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virtual void CreateItemDrawerL();
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private: // From MTsFastSwapTimerObserver
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void TimerCompletedL( CTsFastSwapTimer* aSource );
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private: // New functions
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/**
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* Loads close icon bitmap and mask
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*/
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void LoadCloseIconAndStrokeParams();
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/**
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* Redraws grid and parent controls
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*/
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void Redraw();
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private: // Data
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// Grid's parent
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const CCoeControl* iParent;
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// Close icon handling
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RArray<TInt> iCloseItems;
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TInt iCloseIconHitIdx;
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MTsFastSwapGridObserver* iFastSwapGridObserver;
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CTsFastSwapTimer* iCloseIconRedrawTimer;
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// Highlight handling
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TFastSwapGridBehaviour iBehaviour;
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TBool iHighlightVisible;
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// Visible view rectangle (horizontal scrolling support)
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TRect iVisibleViewRect;
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// Flag controlling input handling by grid
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TBool iAknEventHandlingEnabled;
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};
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/**
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* Custom item drawer for drawing grid items
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*/
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class CTsGridItemDrawer: public CFormattedCellListBoxItemDrawer
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{
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public: // Constructor and destructor
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CTsGridItemDrawer( CTsFastSwapGrid* aGrid,
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CFormattedCellListBoxData* aData );
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~CTsGridItemDrawer();
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public: // New functions
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/**
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* Sets close icon drawn for items that can be closed.
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* Ownership transferred.
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*/
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void SetCloseIcon( CFbsBitmap* aBmp, CFbsBitmap* aBmpMask,
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CFbsBitmap* aBmpPressed, CFbsBitmap* aBmpPressedMask );
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/**
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* Initializes close icon rectangles.
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*
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* @param aButtonRect rectangle for the button, coordinates must be relative to the grid item
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* @param aIconRect rectangle for the icon, coordinates must be relative to the grid item
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*/
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void SetCloseIconRect( const TRect& aButtonRect, const TRect& aIconRect );
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/**
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* Returns current close icon coordinates for the given item rectangle
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*
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* @param aItemRect rectangle of the item for which close button coordinates
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* are to be returned
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*/
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TRect GetCloseButtonRect( const TRect& aItemRect ) const;
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/**
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* Sets screen offset for the item drawer to not draw items on the
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* grid edges
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*/
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void SetEdgeOffset( TInt aLeftOffset, TInt aRightOffset );
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/**
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* Enables/Disables item drawer background redrawing
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*
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* @param aEnable if set to ETrue, background will be redrawn by item drawer
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* if set to EFalse, background will not be redrawn
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*/
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void SetRedrawBackground( TBool aEnable );
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/**
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* Sets color for the screenshot stroke.
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*
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* @param aColor color for the thumbnail
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* @param aHighlightedColor color for thumbnail when item is highlighted
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*/
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void SetStrokeColors( TRgb aNormalColor,
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TRgb aHighlightedColor );
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/**
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* Sets items for which stroke will be drawn
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*
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* @param aItemIndex array of item indexes for which stroke
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* is drawn.
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*/
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void SetStrokeItemsL( RArray<TInt>& aItemIndex );
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/**
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* Sets stroke offset and size: values must be relative
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* to item rectangle.
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*
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* @param aStrokeOffset offset of the stroke rectangle relative
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* to item rectangle
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* @param aStrokeSize size of the stroke rectangle
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*/
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void SetStrokeOffset( TPoint aStrokeOffset, TSize aStrokeSize );
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/**
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* Set screen rectangle, used by the item drawer to determine
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* drawn area.
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*
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* @param aRect screen rectangle
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*/
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void SetScreenRect( TRect aRect );
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private: // From CFormattedCellListBoxItemDrawer
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void DrawActualItem( TInt aItemIndex, const TRect& aActualItemRect,
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TBool aItemIsCurrent, TBool aViewIsEmphasized,
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TBool aViewIsDimmed, TBool aItemIsSelected ) const;
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private: // New functions
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/**
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* Checks if the item rectangle is visible in the view.
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*
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* @param aItemRect rectangle of the item to be checked
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* @return ETrue if rectangle is fully or partially visible
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* EFalse if rectangle is not visible
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*/
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TBool IsItemRectVisible( const TRect& aItemRect ) const;
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/**
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* Checks if the aRectContained rectancle is contained by aRectContainig
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*
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* @param aRectContained rectangle that is suppose to be contained
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* @param aRectContainig rectangle that is suppose to be containing
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* @return ETrue if rectangle is fully contained
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* EFalse if rectangle is not fully contained
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*/
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TBool IsRectContained(const TRect& aRectContained,
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const TRect& aRectContainig) const;
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/**
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* Calculates current inner button rectangle for close icon
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*/
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TRect CalculateInnerButtonRect( const TRect& aOuterRect ) const;
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private: // Data
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// Not owned
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CTsFastSwapGrid* iGrid;
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// Owned
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CFbsBitmap* iCloseIcon;
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CFbsBitmap* iCloseIconMask;
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CFbsBitmap* iCloseIconPressed;
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CFbsBitmap* iCloseIconPressedMask;
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TRect iScreenRect;
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TInt iLeftOffset;
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TInt iRightOffset;
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// Close button data
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TRect iCloseIconRect;
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TRect iCloseButtonRect;
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TBool iRedrawBackground;
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// Stroke data
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TRgb iStrokeColor;
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TRgb iHighlightStrokeColor;
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RArray<TInt> iStrokeItems;
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TRect iStrokeRect;
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};
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/**
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* Timer class for handling highlight bevaiour
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*/
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class CTsFastSwapTimer : public CTimer
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{
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public:
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// Constructor
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CTsFastSwapTimer( MTsFastSwapTimerObserver& aObserver );
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// Destructor
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~CTsFastSwapTimer();
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// 2nd phase constructor
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void ConstructL();
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private: // From CTimer
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void RunL();
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private: // Data
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MTsFastSwapTimerObserver* iObserver; // not own
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};
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#endif /* TSFASTSWAPGRID_H_ */
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