skins/AknSkins/oomplugin/aknskinsoomplugin.cpp
changeset 0 05e9090e2422
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     1 /*
       
     2 * Copyright (c) 2007-2008 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:  OOM plugin for skin server.
       
    15 *
       
    16 */
       
    17 
       
    18 #include <ecom/ecom.h>
       
    19 #include <ecom/implementationproxy.h>
       
    20 #include <oommonitorplugin.h>
       
    21 #include <AknsSrvClient.h>
       
    22 #include <w32std.h>
       
    23 
       
    24 class CAknSkinsOomMonitorPlugin : public COomMonitorPlugin
       
    25     {
       
    26 public:
       
    27     CAknSkinsOomMonitorPlugin();
       
    28     ~CAknSkinsOomMonitorPlugin();
       
    29     void ConstructL();
       
    30 
       
    31 public:
       
    32     void FreeRam();
       
    33     void MemoryGood();
       
    34 
       
    35 private:
       
    36     RAknsSrvSession iSkinSrvSession;
       
    37     };
       
    38 
       
    39 // -----------------------------------------------------------------------------
       
    40 // C++ constructor.
       
    41 // -----------------------------------------------------------------------------
       
    42 //
       
    43 CAknSkinsOomMonitorPlugin::CAknSkinsOomMonitorPlugin()
       
    44     {
       
    45     }
       
    46 
       
    47 // -----------------------------------------------------------------------------
       
    48 // Destructor.
       
    49 // -----------------------------------------------------------------------------
       
    50 //
       
    51 CAknSkinsOomMonitorPlugin::~CAknSkinsOomMonitorPlugin()
       
    52     {
       
    53     iSkinSrvSession.Close();
       
    54     }
       
    55 
       
    56 // -----------------------------------------------------------------------------
       
    57 // Symbian two-phased constructor (2nd phase).
       
    58 // -----------------------------------------------------------------------------
       
    59 //
       
    60 void CAknSkinsOomMonitorPlugin::ConstructL()
       
    61     {
       
    62     COomMonitorPlugin::ConstructL();
       
    63     User::LeaveIfError( iSkinSrvSession.Connect() );
       
    64     }
       
    65 
       
    66 // -----------------------------------------------------------------------------
       
    67 // Gets display type.
       
    68 // -----------------------------------------------------------------------------
       
    69 //
       
    70 TAknsSrcScreenMode GetDisplayTypeL(RWsSession& aSession)
       
    71     {
       
    72     CWsScreenDevice* sc = new (ELeave) CWsScreenDevice(aSession);
       
    73     CleanupStack::PushL(sc);
       
    74     sc->Construct();
       
    75     TSize screensize(0,0);
       
    76     screensize = sc->SizeInPixels();
       
    77     CleanupStack::PopAndDestroy();// screendevice
       
    78     if (screensize.iWidth > screensize.iHeight)
       
    79         {
       
    80         return EAknsSrvScrModeLandscape;
       
    81         }
       
    82     else if (screensize.iWidth < screensize.iHeight)
       
    83         {
       
    84         return EAknsSrvScrModePortrait;
       
    85         }
       
    86     else // square
       
    87         {
       
    88         return EAknsSrvScrModeSquare;
       
    89         }
       
    90     }
       
    91 
       
    92 // -----------------------------------------------------------------------------
       
    93 // Tries to free RAM.
       
    94 // -----------------------------------------------------------------------------
       
    95 //
       
    96 void CAknSkinsOomMonitorPlugin::FreeRam()
       
    97     {
       
    98     TInt err(KErrNone);
       
    99     TAknsSrcScreenMode mode = EAknsSrvScrModeSquare;
       
   100     TRAP(err, mode = GetDisplayTypeL(WsSession()));
       
   101     if (mode != EAknsSrvScrModeSquare)
       
   102         {
       
   103 #if defined(_DEBUG)
       
   104         RDebug::Print(_L("CAknSkinsOomMonitorPlugin: Starting to free memory, mode %d"), mode);
       
   105 #endif
       
   106         iSkinSrvSession.FreeUnnecessaryLayoutBitmaps(mode);
       
   107         }
       
   108     }
       
   109 
       
   110 // -----------------------------------------------------------------------------
       
   111 // CAknSkinsOomMonitorPlugin::MemoryGood
       
   112 // -----------------------------------------------------------------------------
       
   113 //
       
   114 void CAknSkinsOomMonitorPlugin::MemoryGood()
       
   115     {
       
   116     }
       
   117 
       
   118 // -----------------------------------------------------------------------------
       
   119 // Creates plugin.
       
   120 // -----------------------------------------------------------------------------
       
   121 //
       
   122 TAny* CreatePlugin()
       
   123     {
       
   124     CAknSkinsOomMonitorPlugin* plugin = new(ELeave) CAknSkinsOomMonitorPlugin;
       
   125     CleanupStack::PushL(plugin);
       
   126     plugin->ConstructL();
       
   127     CleanupStack::Pop(plugin);
       
   128     return plugin;
       
   129     }
       
   130 
       
   131 // -----------------------------------------------------------------------------
       
   132 // Implementation table for plugin.
       
   133 // -----------------------------------------------------------------------------
       
   134 //
       
   135 const TImplementationProxy ImplementationTable[] =
       
   136     {
       
   137     {{0x10207140}, ::CreatePlugin}
       
   138     };
       
   139 
       
   140 // -----------------------------------------------------------------------------
       
   141 // ImplementationGroupProxy
       
   142 // -----------------------------------------------------------------------------
       
   143 //
       
   144 EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)
       
   145     {
       
   146     aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy) ;
       
   147     return ImplementationTable;
       
   148     }
       
   149 
       
   150 // End of file
       
   151