phonebookui/Phonebook/View/inc/CPbkEmbeddedThumbnail.h
changeset 0 e686773b3f54
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/phonebookui/Phonebook/View/inc/CPbkEmbeddedThumbnail.h	Tue Feb 02 10:12:17 2010 +0200
@@ -0,0 +1,167 @@
+/*
+* Copyright (c) 2002 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: 
+*       Phonebook contact item field embedded thumbnail reader.
+*       Reads an database-embedded picture from a field.
+*
+*/
+
+
+#ifndef __CPbkEmbeddedThumbnail_H__
+#define __CPbkEmbeddedThumbnail_H__
+
+//  INCLUDES
+#include "CPbkThumbnailReaderBase.h"
+#include "CPbkThumbnailWriterBase.h"
+
+
+// FORWARD DECLARATIONS
+class TPbkContactItemField;
+class TPbkImageLoadParameters;
+class CPbkFFSCheck;
+
+// CLASS DECLARATION
+
+/**
+ * Phonebook contact item field embedded thumbnail reader.
+ * Reads an database-embedded picture from a field.
+ */
+NONSHARABLE_CLASS(CPbkEmbeddedThumbnailReader) : 
+        public CPbkThumbnailReaderBase
+    {
+    public: // interface
+        /**
+         * Creates a new instance of this class.
+         *
+         * @param aField    field to read the thumbnail from.
+         * @param aObserver observer to notify about progress of this 
+         *                  operation.
+         */
+        static CPbkEmbeddedThumbnailReader* NewLC
+            (const TPbkContactItemField& aField, 
+            MPbkThumbnailGetObserver& aObserver);
+   
+        /**
+         * Destructor. Cancels any previously executing read operation and
+         * destroys this object.
+         */
+        ~CPbkEmbeddedThumbnailReader();
+
+    public:  // from MPbkThumbnailReader
+        void StartReadL(const TPbkImageLoadParameters* aParameters = NULL);
+
+    private: // implementation
+        CPbkEmbeddedThumbnailReader
+            (const TPbkContactItemField& aField, 
+            MPbkThumbnailGetObserver& aObserver);
+        void ConstructL();
+
+    private: // data members
+        /// Ref: Contact item field
+        const TPbkContactItemField& iField; 
+    };
+
+
+/**
+ * Phonebook contact item field embedded thumbnail reader.
+ * Reads an database-embedded thumbnail image from a field.
+ */
+NONSHARABLE_CLASS(CPbkEmbeddedThumbnailImageReader) : 
+        public CPbkThumbnailImageReaderBase
+    {
+    public: // Interface
+        /**
+         * Creates a new instance of this class.
+         *
+         * @param aField    field to read the thumbnail image from.
+         * @param aObserver observer to notify about progress of this 
+         *                  operation.
+         * @return new instance of this class.
+         */
+        static CPbkEmbeddedThumbnailImageReader* NewLC
+            (const TPbkContactItemField& aField, 
+            MPbkThumbnailGetImageObserver& aObserver);
+   
+        /**
+         * Destructor. Cancels any previously executing read operation and
+         * destroys this object.
+         */
+        ~CPbkEmbeddedThumbnailImageReader();
+
+    public:  // From CPbkThumbnailImageReaderBase
+        void DoStartReadL(const TPbkImageLoadParameters* aParameters = NULL);
+        MPbkImageData* CreateImageDataLC();
+
+    private: // Implementation
+        CPbkEmbeddedThumbnailImageReader
+            (const TPbkContactItemField& aField, 
+            MPbkThumbnailGetImageObserver& aObserver);
+        void ConstructL();
+        const TDesC8& ImageBuffer() const;
+
+    private: // data members
+        /// Ref: Contact item field
+        const TPbkContactItemField& iField; 
+    };
+
+
+/**
+ * Phonebook contact item field embedded thumbnail writer.
+ * Writes an database-embedded picture to a field.
+ */
+NONSHARABLE_CLASS(CPbkEmbeddedThumbnailWriter) : 
+        public CPbkThumbnailWriterBase 
+    {
+    public: // interface
+        /**
+         * Creates a new instance of this class.
+         *
+         * @param aField    field to write the thumbnail to.
+         * @param aObserver observer to notify about progress of this 
+         *                  operation.
+         */
+        static CPbkEmbeddedThumbnailWriter* NewLC
+            (TPbkContactItemField& aField, 
+            MPbkThumbnailSetObserver& aObserver);
+   
+        /**
+         * Destructor.
+         */
+        ~CPbkEmbeddedThumbnailWriter();
+
+    private: // from CPbkThumbnailWriterBase
+        CImageEncoder* CreateImageWriterL();
+        void StoreImageL(const MPbkImageData& aImageData);
+        void StoreImageL(CImageEncoder& aImageWriter);
+        void DoCancel();
+        TSize ImageSize() const;
+
+    private: // implementation
+        CPbkEmbeddedThumbnailWriter
+            (TPbkContactItemField& aField, 
+            MPbkThumbnailSetObserver& aObserver);
+        void ConstructL();
+
+    private: // data members
+        /// Ref: Contact item field
+        TPbkContactItemField& iField; 
+        /// Own: image buffer
+        HBufC8* iBitmapBlob;
+        /// Own: Critical memory level checker
+        CPbkFFSCheck* iFFSCheck;
+    };
+
+#endif // __CPbkEmbeddedThumbnail_H__
+
+// End of File