diff -r 000000000000 -r 4e91876724a2 photosgallery/collectionframework/thumbnailcreator/src/glxtnthumbnailcreator.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/collectionframework/thumbnailcreator/src/glxtnthumbnailcreator.cpp	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,220 @@
+/*
+* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:    Classes for thumbnail-related tasks.
+*
+*/
+
+
+
+
+/**
+ * @internal reviewed 31/07/2007 by Simon Brooks
+ */
+
+#include "glxtnthumbnailcreator.h"
+
+#include "glxpanic.h"
+#include "glxtnbackgroundgenerationtask.h"
+#include "glxtncleanuptask.h"
+#include "glxtndeletethumbnailstask.h"
+#include "glxtnfileutility.h"
+#include "glxtnfilteravailabletask.h"
+#include "glxtngeneratethumbnailtask.h"
+#include "glxtnquickthumbnailtask.h"
+#include "glxtntaskmanager.h"
+#include "glxtnthumbnailrequest.h"
+#include "glxtnzoomedimagetask.h"
+#include "mglxtnthumbnailcreatorclient.h"
+
+#include <glxtracer.h>
+#include <glxsettingsmodel.h>
+
+// -----------------------------------------------------------------------------
+// InstanceL
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CGlxtnThumbnailCreator* CGlxtnThumbnailCreator::InstanceL()
+    {
+    TRACER("CGlxtnThumbnailCreator::InstanceL()");
+    CGlxtnThumbnailCreator* instance
+                    = reinterpret_cast<CGlxtnThumbnailCreator*>(Dll::Tls());
+
+    // Create instance if does not exist
+    if ( !instance ) 
+        {
+    	instance = new (ELeave) CGlxtnThumbnailCreator();
+    	CleanupStack::PushL(instance);
+    	instance->ConstructL();
+    	CleanupStack::Pop(instance);
+
+        Dll::SetTls(instance);
+        }
+
+    // Add user	
+    instance->iReferenceCount++;
+
+    return instance;
+    }
+
+// -----------------------------------------------------------------------------
+// Close
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CGlxtnThumbnailCreator::Close(MGlxtnThumbnailStorage* aStorage)
+    {
+    TRACER("CGlxtnThumbnailCreator::Close()");
+    // Cancel any tasks using the client's storage
+    if ( aStorage )
+        {
+        iTaskManager->CancelTasks(aStorage);
+        }
+
+    __ASSERT_DEBUG(iReferenceCount > 0, Panic(EGlxPanicIllegalState));
+    iReferenceCount--;
+    if ( iReferenceCount < 1 )
+        {
+        Dll::SetTls(NULL);
+        delete this;
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// Constructor
+// -----------------------------------------------------------------------------
+//
+CGlxtnThumbnailCreator::CGlxtnThumbnailCreator() 
+	{
+    TRACER("CGlxtnThumbnailCreator::CGlxtnThumbnailCreator()");
+	}
+
+// -----------------------------------------------------------------------------
+// ConstructL
+// -----------------------------------------------------------------------------
+//
+void CGlxtnThumbnailCreator::ConstructL() 
+	{
+    TRACER("CGlxtnThumbnailCreator::ConstructL()");
+	iFileUtility = CGlxtnFileUtility::NewL();
+	iTaskManager = CGlxtnTaskManager::NewL();
+	iSettingsModel = CGlxSettingsModel::InstanceL();
+	}
+
+// -----------------------------------------------------------------------------
+// Destructor
+// -----------------------------------------------------------------------------
+//
+CGlxtnThumbnailCreator::~CGlxtnThumbnailCreator() 
+	{
+    TRACER("CGlxtnThumbnailCreator::~CGlxtnThumbnailCreator()");
+	delete iTaskManager;
+	delete iFileUtility;
+	if (iSettingsModel)
+	    {
+	    iSettingsModel->Close();
+	    }
+	}
+
+// -----------------------------------------------------------------------------
+// FetchThumbnailL
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CGlxtnThumbnailCreator::FetchThumbnailL(
+                                    const TGlxThumbnailRequest& aRequestInfo,
+                                    MGlxtnThumbnailCreatorClient& aClient) 
+	{
+    TRACER("void CGlxtnThumbnailCreator::FetchThumbnailL()");
+	// Create the task
+	CGlxtnTask* task = NULL;
+
+    if ( 0 == aRequestInfo.iBitmapHandle )
+        {
+        task = CGlxtnBackgroundGenerationTask::NewL(aRequestInfo.iId,
+                                                *iFileUtility, aClient, iSettingsModel->SupportedOrientations() );
+        }
+    else if ( ( 0 == aRequestInfo.iSizeClass.iWidth) || ( 0 == aRequestInfo.iSizeClass.iHeight ) )
+        {
+        User::Leave(KErrArgument);
+        }
+	else if ( !aRequestInfo.iCroppingRect.IsEmpty() )
+	    {
+	    task = CGlxtnZoomedImageTask::NewL(aRequestInfo,
+	                                            *iFileUtility, aClient);
+        }
+	else if ( TGlxThumbnailRequest::EPrioritizeQuality == aRequestInfo.iPriorityMode )
+		{
+		task = CGlxtnGenerateThumbnailTask::NewL(aRequestInfo,
+		                                        *iFileUtility, aClient);
+		}
+    else
+        {
+        task = CGlxtnQuickThumbnailTask::NewL(aRequestInfo,
+                                                *iFileUtility, aClient);
+        }
+
+    iTaskManager->AddTaskL(task);   // Takes ownership
+    } 
+
+// -----------------------------------------------------------------------------
+// DeleteThumbnailsL
+// Starts deleting all stored thumbnails for a given item.  This will result
+// in a callback to MGlxtnThumbnailCreatorClient::ThumbnailDeletionComplete().
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CGlxtnThumbnailCreator::DeleteThumbnailsL(
+            const TGlxMediaId& aItemId, MGlxtnThumbnailCreatorClient& aClient)
+    {
+    TRACER("void CGlxtnThumbnailCreator::DeleteThumbnailsL()");
+    iTaskManager->AddTaskL(CGlxtnDeleteThumbnailsTask::NewL(aItemId, aClient));
+    }
+
+// -----------------------------------------------------------------------------
+// FilterAvailableThumbnailsL
+// Starts the filtering of items for which a thumbnail is available from a
+// list of item IDs.  This will result in a callback to
+// MGlxtnThumbnailCreatorClient::FilterAvailableComplete().
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CGlxtnThumbnailCreator::FilterAvailableThumbnailsL(
+                    const TArray<TGlxMediaId>& aItemArray, const TSize& aSize,
+                    MGlxtnThumbnailCreatorClient& aClient)
+    {
+    TRACER("void CGlxtnThumbnailCreator::FilterAvailableThumbnailsL()");
+    iTaskManager->AddTaskL(CGlxtnFilterAvailableTask::NewL(aItemArray, aSize,
+                                                            aClient));
+    }
+
+// -----------------------------------------------------------------------------
+// CleanupThumbnailsL
+// Starts the cleanup of obsolete thumbnails from storage.  There is no
+// callback indicating completion of the request.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CGlxtnThumbnailCreator::CleanupThumbnailsL(
+                                        MGlxtnThumbnailStorage* aStorage)
+    {
+    TRACER("void CGlxtnThumbnailCreator::CleanupThumbnailsL()");
+    iTaskManager->AddTaskL(CGlxtnCleanupTask::NewL(aStorage));
+    }
+
+// -----------------------------------------------------------------------------
+// CancelRequest
+// Cancel any ongoing tasks for a given item.  This ensures the TNC is not
+// locking the media file.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CGlxtnThumbnailCreator::CancelRequest(const TGlxMediaId& aItemId)
+    {
+    TRACER("void CGlxtnThumbnailCreator::CancelRequest()");
+    iTaskManager->CancelTasks(aItemId);
+    }