--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wvuing/wvuieng/EngSrc/CCAImageLoader.h	Thu Dec 17 08:41:52 2009 +0200
@@ -0,0 +1,202 @@
+/*
+* Copyright (c) 2005 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:  Image loader and scaler
+*
+*/
+
+
+#ifndef CCAIMAGELOADER_H
+#define CCAIMAGELOADER_H
+
+#include <f32file.h>
+#include "MCAChatObserver.h"
+#include "MCAContentProcessor.h"
+
+//	FORWARD CLASS DECLERATIONS
+class MCAChatInterface;
+class CCAPictureMessage;
+class CImageDecoder;
+class CBitmapScaler;
+class CFbsBitmap;
+class CImageEncoder;
+class MCAImpsFactory;
+
+// CLASS DECLARATION
+
+/**
+ *  Image loader and scaler
+ *
+ *  @lib CAEngine.dll
+ *  @since 3.0
+ */
+class CCAImageLoader : public CActive, public MCAContentProcessor
+    {
+    public: // Construction
+
+        /**
+         * Construction
+         */
+        static CCAImageLoader* NewL( MCAChatInterface& aChatInterface,
+                                     MCAImpsFactory& aImpsFactory );
+
+        /**
+         * Destruction
+         */
+        ~CCAImageLoader();
+
+    private: // Construction
+
+        /**
+         * Constructor
+         */
+        CCAImageLoader( MCAChatInterface& aChatInterface,
+                        MCAImpsFactory& aImpsFactory );
+
+        /**
+         * Constructor
+         */
+        void ConstructL();
+
+    private: // From CActive
+
+        /**
+         * @see CActive
+         */
+        void RunL();
+
+        /**
+         * @see CActive
+         */
+        void DoCancel();
+
+        /**
+         * @see CActive.
+         */
+        TInt RunError( TInt aError );
+
+    private: // From MCAContentProcessor
+
+        /**
+         * @see MCAContentProcessor
+         */
+        void RequestProcessingL( MCAMessage& aMessage );
+
+        /**
+         * @see MCAContentProcessor
+         */
+        void StartProcessingL( MCAMessage& aMessage );
+
+        /**
+         * @see MCAContentProcessor
+         */
+        void CancelProcessing( MCAMessage& aMessage );
+
+        /**
+         * @see MCAContentProcessor
+         */
+        void RemoveProcessingL( MCAMessage& aMessage );
+
+    private: // New helper methods
+
+        /**
+         * LaunchProcessing if needed.
+         */
+        void LaunchProcessingL();
+
+        /**
+         * Get new size after decoding.
+         * Scale to nearest (larger or equal) size with ratio 1:1, 1:2, 1:4 or 1:8
+         * directly when decoding.
+         *
+         * @param aSize Size of original image
+         * @param aTargetSize Size of target image
+         * @param aAnyRatio Set this to ETrue if the decoder is cabable of scaling to any ratio
+         * @return New size of decoded image
+         */
+        TSize DecodeSize( const TSize& aSize, const TSize& aTargetSize,
+                          TBool aAnyRatio );
+
+        /**
+         * Get new size after scaling. If scale not needed return EFalse
+         * Scaled size will be 320x240 if width > height or 240x320 if
+         * height > width.
+         *
+         * @param aSize Original size of image
+         * @param aNewSize New size of scaled image
+         * @return ETrue if scale needed.
+         */
+        TBool ScaleSize( const TSize& aSize, TSize& aNewSize );
+
+        /**
+         * Notify observer for completion and remove message from array
+         */
+        void CompleteRequestL();
+
+        /**
+         * Reset current operation and remove all pending messages from stack.
+         * @param aReason reson for reseting
+         */
+        void ResetProcessingL( TInt aReason );
+
+        /**
+         * Deletes and cancels all processing units ( decoder, encoder etc ).
+         */
+        void ClearState();
+
+
+    private: // Data
+
+        /// File system access
+        RFs iFs;
+
+        // Decoder for image.
+        CImageDecoder* iDecoder;
+        CBitmapScaler* iScaler;
+        CImageEncoder* iEncoder;
+
+        /// Interface to access containers
+        MCAChatInterface& iChatInterface;
+
+        /// Array of images to operate.
+        RPointerArray< MCAMessage > iMessages;
+
+        /// Processing on/off.
+        TBool iProcessing;
+
+        /// Bitmap. Owns.
+        CFbsBitmap* iBitmap;
+
+        /// Current message in process
+        MCAMessage* iCurrentMessage;
+
+        /// Target size for bitmap
+        TSize iTargetSize;
+
+        /// Thumbnail size for bitmap
+        TSize iThumbSize;
+
+        /// Owns.
+        HBufC8* iContent;
+
+        // Interface to MCAImpsFactory. Not owned.
+        MCAImpsFactory& iImpsFactory;
+
+        // See IMVariant.hrh, flag depends on
+        // feature EIMFeatSendNotScalable.
+        TBool iSendNotScalable;
+    };
+
+#endif      // CCAIMAGELOADER_H
+
+// End of File