scrsaver/scrsaverplugins/ScreenSaverGifAnimPlugin/src/GifAnimationPlugin.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:46:04 +0200
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permissions -rw-r--r--
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/*
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* Copyright (c) 2005 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:     Screensaver GifAnimation plug-in implementation source file
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*
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*/
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#include <e32std.h>
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#include <eikenv.h>
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#include <barsread.h>
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#include <fbs.h>
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#include <gdi.h>
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#include <f32file.h>
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#include <CEcomBrowserPluginInterface.h>
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#include "GifAnimationPlugin.h"
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#include "GifAnimationUtils.h"
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// ======== MEMBER FUNCTIONS ========
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// ---------------------------------------------------------------------------
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// Instance factory.
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// ---------------------------------------------------------------------------
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//
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CGifAnimationPlugin* CGifAnimationPlugin::NewL( NPP anInstance )
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    {
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    DBG_TRACE_FN_BEGIN;        
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    CGifAnimationPlugin *self = new (ELeave) CGifAnimationPlugin;
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    CleanupStack::PushL( self );
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    self->Construct( anInstance );
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    CleanupStack::Pop();
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    DBG_TRACE_FN_END;
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    return self;
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    }
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// ---------------------------------------------------------------------------
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// Destructor
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// ---------------------------------------------------------------------------
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//
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CGifAnimationPlugin::~CGifAnimationPlugin()
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    {
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    DBG_TRACE_FN_BEGIN;        
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    if ( iControl )
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        {
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        delete iControl;
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        iControl=NULL;
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        }
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    DBG_TRACE_FN_END;
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    }
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// ---------------------------------------------------------------------------
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// Notifies host that plug-in has finished.
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// ---------------------------------------------------------------------------
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//
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void CGifAnimationPlugin::PrepareToExitL()
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    {
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    DBG_TRACE_FN_BEGIN;        
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    if ( iPluginAdapter )
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        {
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        CCoeControl* aParentControl = iPluginAdapter->GetParentControl();
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        if ( iControl != NULL )
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            {
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            // will free resources, if file was loaded but was not stopped
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            iControl->StopAnimation();
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            }
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        iPluginAdapter->PluginFinishedL();
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        }
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    DBG_TRACE_FN_END;
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    }
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// ---------------------------------------------------------------------------
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// 2nd phase constructor.
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// ---------------------------------------------------------------------------
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//
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void CGifAnimationPlugin::Construct( NPP anInstance )
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    {
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    DBG_TRACE_FN_BEGIN;        
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    iInstance=anInstance;
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    DBG_TRACE_FN_END;
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    }
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// ---------------------------------------------------------------------------
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// Sets the parent window to plug-in. If already set, only updates size.
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// ---------------------------------------------------------------------------
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//
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void CGifAnimationPlugin::SetWindowL( const NPWindow *aWindow, 
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                                      const TRect& aRect )
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    {
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    DBG_TRACE_FN_BEGIN;        
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    iPluginAdapter = static_cast<MPluginAdapter*>( aWindow->window );
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    CCoeControl* aParentControl = iPluginAdapter->GetParentControl();
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    if ( iControl == NULL )
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        {
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        iControl = CGifAnimationPluginControl::NewL( aParentControl, 
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													 iPluginAdapter );
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        iPluginAdapter->PluginConstructedL( iControl );
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        }
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    if ( iControl != NULL )
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        {
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        iControl->SetRect( aRect );
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        }
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    DBG_TRACE_FN_END;
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    }
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// ---------------------------------------------------------------------------
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// Returns pointer on instance of CGifAnimationPluginControl
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// ---------------------------------------------------------------------------
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//
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CGifAnimationPluginControl* CGifAnimationPlugin::Control()
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    {
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    DBG_TRACE_FN_BEGIN;        
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    ASSERT( iControl );
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    DBG_TRACE_FN_END;
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    return iControl;
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    }
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// ---------------------------------------------------------------------------
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// Returns pointer on NPP instance
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// ---------------------------------------------------------------------------
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//
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NPP CGifAnimationPlugin::Instance()
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    {
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    DBG_TRACE_FN_BEGIN;        
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    ASSERT( iInstance );
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    DBG_TRACE_FN_END;
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    return iInstance;
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    }