mpxplugins/viewplugins/views/commonplaybackview/inc/mpxbuttonmanager.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:45:05 +0200
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/*
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* Copyright (c) 2006 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:  Button state manager for common playback view
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*
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*/
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#ifndef CMPXBUTTONMANAGER_H
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#define CMPXBUTTONMANAGER_H
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//  INCLUDES
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#include <coecntrl.h>
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#include <AknUtils.h>
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#include "mpxbutton.h"
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#include "mpxplaybackframeworkdefs.h"
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//  FORWARD DECLARATIONS
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class CWindowGc;
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class MAknsControlContext;
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class MMPXPlaybackViewLayout;
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class CAknButton;
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class CAknViewAppUi;
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class CGulIcon;
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// CLASS DECLARATION
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/**
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*  Button state manager for playback view.
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*
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*  @lib mpxplaybackview.dll
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*  @since S60 v3.0
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*/
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NONSHARABLE_CLASS( CMPXButtonManager ) :public CCoeControl,
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                                        public MCoeControlObserver,
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                                        public MCoeControlBackground
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    {
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    public:  // Constructors and destructor
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        /**
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        * Two-phased constructor.
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        * since 5.0
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        * @param aObserver          Observer to receive commands from button
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        *                           pushes.
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        * @param aLayout            Layout for this view
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        * @param aContainer			Container for this control
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        */
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        static CMPXButtonManager* NewL(
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            MMPXButtonCmdObserver* aObserver,
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            MMPXPlaybackViewLayout* aLayout,
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            const CCoeControl &aContainer);
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        /**
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        * Destructor.
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        */
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        virtual ~CMPXButtonManager();
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    public:
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        /**
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        * Update button state based on the state of the engine
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        * @param aState State of the playback engine
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        */
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        void UpdateButtonStates(TMPXPlaybackState aState);
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        /**
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        * Handle a key event.
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        * @see CCoeControl::OfferKeyEventL
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        */
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        TKeyResponse OfferKeyEventL(
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            const TKeyEvent& aKeyEvent,
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            TEventCode aType);
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        /**
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        * Set parent rectangle for the button layout
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        * @since 3.0
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        * @param aRect Parent rectangle
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        */
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        void SetParentRect(const TRect& aRect);
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        /**
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        * Sets to enable/display the button or not
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        */
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        void SetEnabled( TBool aEnabled );
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        /**
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         * Handles losing foreground
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         *
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         * @since S60 3.0
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         */
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        void HandleForegroundLostL();
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	    /**
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	     * From CCoeControl.
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	     * Gets the number of controls contained in a compound control.
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	     * since 5.0
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	     *
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	     * @return The number of component controls contained by this control.
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	     */
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	    TInt CountComponentControls() const;
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	    /**
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	     * From CCoeControl.
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	     * Gets an indexed component of a compound control.
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	     * since 5.0
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	     *
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	     * @param aIndex The index of the control.
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	     * @return The component control with an index of aIndex.
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	     */
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	    CCoeControl* ComponentControl( TInt aIndex ) const;
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		/**
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		* From MCoeControlObserver.
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		* To handle the button events.
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		* since 5.0
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		*/
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		void HandleControlEventL( CCoeControl* aControl, TCoeEvent aEventType );
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	    /**
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	     * From CoeControl.
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	     * Handles a change to the control's resources.
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		 * since 5.0
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	     *
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	     * @param aType A message UID value.
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	     */
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	    void HandleResourceChange( TInt aType );
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	    void CMPXButtonManager::SizeChanged();
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	    /**
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	     * From MCoeControlBackground
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		 * since 5.0
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	     */
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	    void Draw(CWindowGc& aGc, const CCoeControl& aControl, const TRect& aRect) const;
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	    /**
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        * restore button state in some special case
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        * @since S60 3.0
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        * @param aState State of the playback engine
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        */
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        void RestoreButtonStates( TMPXPlaybackState aState );
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    private:
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        /**
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        * C++ default constructor.
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        */
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        CMPXButtonManager(
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            MMPXButtonCmdObserver* aObserver,
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            MMPXPlaybackViewLayout* aLayout);
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        /**
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        * By default Symbian 2nd phase constructor is private.
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        */
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        void ConstructL(const CCoeControl &aContainer);
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    private: // New functions
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        /**
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        * Create the rocker button using multiple avkon buttons
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        */
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        void CreateRockerAvkonButtonsL(const CCoeControl &aContainer);
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        /**
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        * Sets the avkon rocker button state and send observer commands
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        */
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        TKeyResponse SetAvkonButtonState( const TKeyEvent& aKeyEvent, TEventCode aType );
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        /**
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        * Callback for long-press timer
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        */
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        static TInt TimerCallback(TAny* aPtr);
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        /**
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        * Handle long press event.
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        */
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        void HandleLongPress();
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    private:    // Data
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        TRect iParentRect;
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        TInt iButton;
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        MMPXButtonCmdObserver* iObserver;          // not owned
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        TBool iIsEmbedded;
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        TBool iProgDownloadMode;
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        TBool iIsCDPreview;
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        TBool iKeyDownEventReceived;
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        MMPXPlaybackViewLayout* iLayout;    // not owned
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        TBool iEnabled;
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        TBool iKeyDownReceived;
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        TBool iIsSeeking;
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        RPointerArray<CAknButton> iAvkonButtons;        // owned
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        TInt iRockerAvkonButtonCount;
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        TBool iVolumeInRocker;
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        TBool iIsTouchUi;
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        TBool iStopInRocker;
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        TBool iIsLongPress;
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        CPeriodic* iLongKeyTimer;
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        TInt iLongPressCommandId;
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    };
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#endif      // CMPXBUTTONMANAGER_H
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// End of File