photosgallery/viewframework/tvout/src/glxwindowvisibilitymonitor.cpp
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     1 /*
       
     2 * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). 
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:    Class that monitors tv window visibility
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 
       
    20 /**
       
    21  * @internal reviewed 24/08/2007 by D Holland
       
    22  */
       
    23 
       
    24 //  CLASS HEADER
       
    25 #include "glxwindowvisibilitymonitor.h"
       
    26 
       
    27 //  EXTERNAL INCLUDES
       
    28 #include <w32std.h>             // for TWsEvent
       
    29 #include <AknDef.h>             // for KAknFullOrPartialForegroundLost
       
    30 #include <AknWsEventObserver.h> // for EventMonitor
       
    31 #include <aknappui.h>
       
    32 
       
    33 //  INTERNAL INCLUDES
       
    34 #include <glxlog.h>
       
    35 #include <glxpanic.h>
       
    36 #include "glxtv.h"              // for MGlxWindowVisibilityObserver
       
    37 
       
    38 
       
    39 
       
    40 //-----------------------------------------------------------------------------
       
    41 // Return new object
       
    42 //-----------------------------------------------------------------------------
       
    43 //
       
    44 CGlxWindowVisibilityMonitor* CGlxWindowVisibilityMonitor::NewL(
       
    45                                MGlxWindowVisibilityObserver& aVisibilityObserver ) 
       
    46     {
       
    47     GLX_LOG_INFO("CGlxWindowVisibilityMonitor::NewL");
       
    48     CGlxWindowVisibilityMonitor* self = new ( ELeave ) 
       
    49                 CGlxWindowVisibilityMonitor( aVisibilityObserver );
       
    50     CleanupStack::PushL( self );
       
    51     self->ConstructL();
       
    52     CleanupStack::Pop( self );
       
    53     return self;
       
    54     }
       
    55     
       
    56 
       
    57 //-----------------------------------------------------------------------------
       
    58 // Destructor
       
    59 //-----------------------------------------------------------------------------
       
    60 //
       
    61 CGlxWindowVisibilityMonitor::~CGlxWindowVisibilityMonitor()
       
    62     {
       
    63     GLX_LOG_INFO("~CGlxWindowVisibilityMonitor");
       
    64     }
       
    65 
       
    66 
       
    67 //-----------------------------------------------------------------------------
       
    68 // Close
       
    69 // To overcome code-scanner high rated warning
       
    70 //-----------------------------------------------------------------------------
       
    71 //
       
    72 void CGlxWindowVisibilityMonitor::Close()
       
    73     {
       
    74     iAknEventMonitor->Enable( EFalse );
       
    75     iAknEventMonitor->RemoveObserver( this );
       
    76     }
       
    77 
       
    78 //-----------------------------------------------------------------------------
       
    79 // Default C++ constructor
       
    80 //-----------------------------------------------------------------------------
       
    81 //
       
    82 CGlxWindowVisibilityMonitor::CGlxWindowVisibilityMonitor
       
    83                            ( MGlxWindowVisibilityObserver& aVisibilityObserver ) 
       
    84                             :iVisibilityObserver ( aVisibilityObserver )
       
    85     {
       
    86     GLX_LOG_INFO("CGlxWindowVisibilityMonitor");
       
    87     }
       
    88 
       
    89 
       
    90 //-----------------------------------------------------------------------------
       
    91 // Symbian second phase constructor
       
    92 //-----------------------------------------------------------------------------
       
    93 //
       
    94 void CGlxWindowVisibilityMonitor::ConstructL()
       
    95     {
       
    96     GLX_LOG_INFO("CGlxWindowVisibilityMonitor::ConstructL");
       
    97     // Register for visibility events
       
    98     iAknEventMonitor = 
       
    99        static_cast<CAknAppUiBase*>(CCoeEnv::Static()->AppUi())->EventMonitor();
       
   100     iAknEventMonitor->Enable( ETrue );
       
   101     iAknEventMonitor->AddObserverL( this );
       
   102     }
       
   103 
       
   104 
       
   105 //-----------------------------------------------------------------------------
       
   106 // From class MAknWsEventObserver
       
   107 // Propagates window server visibility events to the observer
       
   108 //-----------------------------------------------------------------------------
       
   109 //
       
   110 void CGlxWindowVisibilityMonitor::HandleWsEventL( const TWsEvent& aEvent, 
       
   111                                                 CCoeControl* /*aDestination*/ )
       
   112     {
       
   113     GLX_LOG_INFO("CGlxWindowVisibilityMonitor::HandleWsEventL");
       
   114 	TInt eventType = aEvent.Type();
       
   115 
       
   116     if ( eventType == EEventWindowVisibilityChanged )
       
   117         {
       
   118         // check the state 
       
   119         TUint visible = aEvent.VisibilityChanged()->iFlags;
       
   120         // notify the observer
       
   121         if ( visible & TWsVisibilityChangedEvent::EFullyVisible )
       
   122             {
       
   123             GLX_LOG_INFO("Visibility Event - EFullyVisible");
       
   124             iVisibilityObserver.HandleWindowVisibilityChangedL( ETvDisplayIsVisible ); 
       
   125             }
       
   126         else if ( visible & TWsVisibilityChangedEvent::ENotVisible )
       
   127             {
       
   128             GLX_LOG_INFO("Visibility Event - ENotVisible");
       
   129             iVisibilityObserver.HandleWindowVisibilityChangedL( ETvDisplayNotVisible ); 
       
   130             }
       
   131          else if (visible & TWsVisibilityChangedEvent::EPartiallyVisible)   
       
   132             {
       
   133             GLX_LOG_INFO("Visibility Event - EPartiallyVisible");
       
   134             iVisibilityObserver.HandleWindowVisibilityChangedL( ETvDisplayNotVisible ); 
       
   135             }
       
   136         }
       
   137     }
       
   138 
       
   139 
       
   140 
       
   141 
       
   142