emailuis/uicomponents/inc/cuicscrollbar.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 27 Apr 2010 16:20:14 +0300
branchRCL_3
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Revision: 201015 Kit: 201017
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/*
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* Copyright (c) 2007-2008 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: cuicscrollbar.h
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*
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*/
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#ifndef C_UICSCROLLBAR_H
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#define C_UICSCROLLBAR_H
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#include <alf/alfcontrol.h>
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#include <alf/alfbitmapprovider.h>
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#include "muicscrollbar.h"
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// Forward declarations
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class CAlfAnchorLayout;
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class CAlfDeckLayout;
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class CAlfImageVisual;
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class CAlfLayout;
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class CAlfTexture;
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/**
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 * Composite image
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 */
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NONSHARABLE_CLASS( CUiCCompositeImage ) : public CBase
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    {
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public:
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    /**
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     * Leave safe constructor
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     */
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    static CUiCCompositeImage* NewL( CAlfControl& aControl, CAlfLayout* aParentLayout,
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            CAlfTexture& aTop, CAlfTexture& aMiddle, CAlfTexture& aBottom );
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    /**
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     * Destructor
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     */
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    ~CUiCCompositeImage();
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    /**
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     * Returns layout for this component
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     */
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    CAlfLayout& Layout();
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private:
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    CUiCCompositeImage();
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    void ConstructL( CAlfControl& aControl, CAlfLayout* aParentLayout,
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            CAlfTexture& aTop, CAlfTexture& aMiddle, CAlfTexture& aBottom );
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    void SetAnchors();
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private:
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    CAlfAnchorLayout* iLayout;
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    CAlfImageVisual* iTop;
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    CAlfImageVisual* iMiddle;
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    CAlfImageVisual* iBottom;
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    };
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/**
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 * CUiCScrollBar
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 *
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 */
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NONSHARABLE_CLASS( CUiCScrollBar ) : public CAlfControl, public MUiCScrollBar,
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        public MAlfBitmapProvider
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    {
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public:
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    /**
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     * Leave safe constructor
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     */
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    static CUiCScrollBar* NewL( CAlfEnv& aEnv, CAlfLayout* aParentLayout );
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public: // from MUiCScrollBar
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    /**
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     * @see MUiCScrollBar::Destroy
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     */
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    virtual void Destroy();
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    /**
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     * @see MUiCScrollBar::Show
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     */
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    virtual void Show( const TBool aShow );
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    /**
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     * @see MUiCScrollBar::UpdateModelL
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     */
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    virtual void UpdateModelL( const TUiCScrollBarModel& aModel );
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    /**
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     * @see MUiCScrollBar::ThumbPosition
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     */
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    virtual TInt ThumbPosition() const;
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    /**
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     * @see MUiCScrollBar::SetRect
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     */
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    virtual void SetRect( const TRect& aRect );
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    /**
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     * @see MUiCScrollBar::Redraw
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     */
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    virtual void Redraw();
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    /**
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     * @see MUiCScrollBar::NotifyThemeChanged
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     */
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    virtual void NotifyThemeChanged();
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    /**
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     * @see MUiCScrollBar::LayoutHints
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     */
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    virtual TInt LayoutHints() const;
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private: // from MAlfEventHandler
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    /**
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     * @see MAlfEventHandler::OfferEventL
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     */
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    virtual TBool OfferEventL( const TAlfEvent& aEvent );
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private: // from MAlfBitmapProvider
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    /**
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     * @see MAlfBitmapProvider::ProvideBitmapL
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     */
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    virtual void ProvideBitmapL( TInt aId, CFbsBitmap*& aBitmap, CFbsBitmap*& aMaskBitmap );
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private:
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    /**
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     * Destructor
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     */
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    ~CUiCScrollBar();
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    /**
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     * Constructor
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     */
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    CUiCScrollBar();
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    /**
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     * 2nd constructor
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     */
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    void ConstructL( CAlfEnv& aEnv, CAlfLayout* aParentLayout );
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    /**
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     * Sets anchors for background image and thumb
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     */
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    void SetAnchors();
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    /**
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     * Sets anchors for background
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     */
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    void SetBgAnchors();
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    /**
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     * Sets anchors for thumb
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     */
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    void SetThumbAnchors();
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35
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    /**
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     * Reads values from layout
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     */
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    void UpdateLayoutValues();
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33
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private:
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    /**
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     * Custom events
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     */
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    enum TEvent
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        {
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        EFadeOut
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        };
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    /**
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     * Unique bitmaps IDs, make sure these do no overlap with the ones defined
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     * in UI
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     */
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    enum TBitmapId
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        {
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        EThumbTop = 0x10000,
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        EThumbMiddle,
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        EThumbBottom,
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        EBackgroundTop,
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        EBackgroundMiddle,
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        EBackgroundBottom
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        };
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private:
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    // Container layout
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    CAlfDeckLayout* iDeck;
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    // Scrollbar background layout
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    CAlfAnchorLayout* iBgLayout;
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    // Scrollbar layout
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    CAlfAnchorLayout* iThumbLayout;
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    // Scrollbar background visual
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    CUiCCompositeImage* iBackGroundVisual;
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    // Scrollbar thumb visual
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    CUiCCompositeImage* iThumbVisual;
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    // Scrollbar model
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    TUiCScrollBarModel iModel;
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    };
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#endif /* C_UICSCROLLBAR_H */