multimediacommscontroller/mmccvideosourcesink/src/mccredrawhandler.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 01:04:58 +0200
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child 17 a5ac35ca6d81
permissions -rw-r--r--
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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:    
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*
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*/
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// INCLUDE FILES
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#include <w32std.h>
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#include "mccredrawhandler.h"
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#include "mccvideosourcesinklogs.h"
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// ============================ MEMBER FUNCTIONS ===============================
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// -----------------------------------------------------------------------------
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// CMccRedrawHandler::NewL
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// -----------------------------------------------------------------------------
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//
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CMccRedrawHandler* CMccRedrawHandler::NewL( 
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    RWsSession& aWsSession, 
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    RWindow& aWindow, 
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    CWindowGc& aGc )
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    {
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    CMccRedrawHandler* self = 
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        new ( ELeave ) CMccRedrawHandler( aWsSession, aWindow, aGc );
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    CleanupStack::PushL( self );
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    self->ConstructL();
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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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// CMccRedrawHandler::~CMccRedrawHandler
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// -----------------------------------------------------------------------------
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//
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CMccRedrawHandler::~CMccRedrawHandler()
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    {
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	Cancel();
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    }
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// -----------------------------------------------------------------------------
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// CMccRedrawHandler::BlackDrawingL
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// -----------------------------------------------------------------------------
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//
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void CMccRedrawHandler::BlackDrawingL( TBool aIsEnabled )
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    {
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    __V_SOURCESINK_CONTROLL_INT1( "CMccRedrawHandler::BlackDrawingL, enabled:", 
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                                  aIsEnabled )
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    iDrawBlack = aIsEnabled;
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    if ( DoRedrawing() )
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        {
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        StartRedrawing();
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        }
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    else
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        {
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        Cancel();
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        }
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    __V_SOURCESINK_CONTROLL( "CMccRedrawHandler::BlackDrawingL, exit" )
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    }
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// -----------------------------------------------------------------------------
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// CMccRedrawHandler::RunL
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// -----------------------------------------------------------------------------
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//
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void CMccRedrawHandler::RunL()
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    {
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    TInt status( iStatus.Int() );
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    __V_SOURCESINK_CONTROLL_INT1( "CMccRedrawHandler::RunL, status:", status )
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    if ( status == KErrNone )
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        {
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        TWsRedrawEvent event;
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        iWsSession.GetRedraw( event );
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        Draw( event.Rect() );
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        StartRedrawing();
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        }
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    __V_SOURCESINK_CONTROLL( "CMccRedrawHandler::RunL, exit" )
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    }
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// -----------------------------------------------------------------------------
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// CMccRedrawHandler::DoCancel
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// -----------------------------------------------------------------------------
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//
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void CMccRedrawHandler::DoCancel()
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    {
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    iWsSession.RedrawReadyCancel();
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    }
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// -----------------------------------------------------------------------------
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// CMccRedrawHandler::CMccRedrawHandler
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// -----------------------------------------------------------------------------
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//
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CMccRedrawHandler::CMccRedrawHandler( 
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    RWsSession& aWsSession, 
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    RWindow& aWindow, 
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    CWindowGc& aGc ) :
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    CActive( CActive::EPriorityStandard ),
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    iWsSession( aWsSession ),
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    iWindow( aWindow ),
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    iGc( aGc ),
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    iDrawBlack( EFalse )
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    {
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    CActiveScheduler::Add( this );
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    }
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// -----------------------------------------------------------------------------
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// CMccRedrawHandler::ConstructL
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// -----------------------------------------------------------------------------
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//        
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void CMccRedrawHandler::ConstructL()
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    {
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    __V_SOURCESINK_CONTROLL( "CMccRedrawHandler::ConstructL, entry" )
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    StartRedrawing();
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    __V_SOURCESINK_CONTROLL( "CMccRedrawHandler::ConstructL, exit" )
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    }
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// -----------------------------------------------------------------------------
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// CMccRedrawHandler::Draw
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// -----------------------------------------------------------------------------
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//
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void CMccRedrawHandler::Draw( const TRect& aRect )
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    {
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    __V_SOURCESINK_CONTROLL_INT2( "CMccRedrawHandler::Draw rect x1:", 
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                                  aRect.iTl.iX, " y1 ", aRect.iTl.iY ) 
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    __V_SOURCESINK_CONTROLL_INT2( "CMccRedrawHandler::Draw rect x2:", 
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                                  aRect.iBr.iX, " y2 ", aRect.iBr.iY ) 
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    iGc.Activate( iWindow ); 
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    iWindow.Invalidate( aRect );
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    iWindow.BeginRedraw( aRect );
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    if ( iDrawBlack )
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        {
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        iGc.SetBrushStyle( CGraphicsContext::ESolidBrush );
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        iGc.SetBrushColor( KRgbBlack );
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        iGc.Clear( aRect );
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        iDrawBlack = EFalse;
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        }
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    else if ( iWindow.DisplayMode() >= EColor16MA )
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        { 
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        // Need to set alpha mode, otherwise video cannot be seen
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    	iGc.SetDrawMode( CGraphicsContext::EDrawModeWriteAlpha );
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    	iGc.SetBrushColor( TRgb( 0, 0 ) );
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    	iGc.Clear( aRect );
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        }
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	else
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	    {
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	    // NOP
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	    }
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    iWindow.EndRedraw();
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    iGc.Deactivate();
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    iWsSession.Flush();
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    __V_SOURCESINK_CONTROLL( "CMccRedrawHandler::Draw, exit" )
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    }
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// -----------------------------------------------------------------------------
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// CMccRedrawHandler::DoRedrawing
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// -----------------------------------------------------------------------------
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//
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TBool CMccRedrawHandler::DoRedrawing() const
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    {
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    return ( iDrawBlack || iWindow.DisplayMode() >= EColor16MA );
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    }
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// -----------------------------------------------------------------------------
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// CMccRedrawHandler::StartRedrawing
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// -----------------------------------------------------------------------------
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//
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void CMccRedrawHandler::StartRedrawing()
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    {
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    if ( DoRedrawing() && !IsActive() )
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        {
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        __V_SOURCESINK_CONTROLL( "CMccRedrawHandler::StartRedrawing, activate" )
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        iWsSession.RedrawReady( &iStatus );
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        SetActive();
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        }
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    }
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// End of file
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   203