--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imagehandling_plat/image_handling_library_api/inc/MIHLScaler.h	Tue Jan 26 15:18:05 2010 +0200
@@ -0,0 +1,169 @@
+/*
+* Copyright (c) 2004 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:  Pure virtual interface to bitmap scaler
+*              : using Font and Bitmap Server bitmaps.
+*
+*/
+
+
+#ifndef MIHLSCALER_H
+#define MIHLSCALER_H
+
+// INCLUDES
+#include <e32std.h>
+
+// FORWARD DECLARATION
+class MIHLScaler;
+class MIHFilter;
+class CFbsBitmap;
+
+// FACTORY DECLARATION
+class IHLScaler
+    {
+    public:
+		
+        /**
+        * Create new MIHLScaler instance.
+        * @since 3.0
+		* @param aOptions Special options for bitmap scaling. Use MIHLScaler::TOptions values.
+		* @return New scaler instance.
+		*/
+        IMPORT_C static MIHLScaler* CreateL( const TUint32 aOptions = 0 );
+	};
+
+// CLASS DECLARATION
+/**
+*  MIHLScaler
+*
+*  Pure virtual interface to bitmap scaler
+*  using Font and Bitmap Server bitmaps.
+*
+*  If interface needs to be pushed into CleanupStack,
+*  remember to use CleanupStackDeletePushL() function!
+*  DO NOT USE CleanupStack::PushL()!!
+*
+*  @lib IHL.lib
+*  @since 3.0
+*/
+class MIHLScaler
+    {
+    public:
+
+        /**
+        * Virtual destructor.
+		*/
+        virtual ~MIHLScaler() {}
+
+	public:
+
+		/**
+		* Flags to control scaler functionality.
+		* These can be combined using an OR operation.
+		* @since 3.0
+		*/
+		enum TOptions
+			{
+			EOptionUseBilinearInterpolation	= 0x01,
+			};
+
+    public:
+
+        /**
+        * Scale rectangle from source bitmap to a rectangle
+		* in destination bitmap. Scaled area can be also
+		* rotated and/or mirrored during process.
+		*
+		* Rotating is done by defining SOURCE rectangle
+		* topleft and bottomright corners in following way:
+		*
+		* No rotate:  tl-----    90 degree:   -----tl
+		*             |      |               |      |
+		*             |      |               |      |
+		*              -----br               br-----
+		*
+		* 180 degree: br-----    270 degree:  -----br
+		*             |      |               |      |
+		*             |      |               |      |
+		*              -----tl               tl-----
+		*
+  		* Mirroring is done by defining DESTINATION rectangle
+		* topleft and bottomright corners in following way:
+		*
+		* No mirroring:         tl-----
+		*                       |      |
+		*                       |      |
+		*                        -----br
+		*
+		* X-axis mirroring:      -----tl
+		*                       |      |
+		*                       |      |
+		*                       br-----
+		*
+		* Y-axis mirroring:      -----br
+		*                       |      |
+		*                       |      |
+		*                       tl-----
+        *
+		* X and Y-axis          br-----
+		* mirroring:            |      |
+		*                       |      |
+		*                        -----tl
+		*
+        * @since 3.0
+        * @param aStatus Process request status reference.
+        * @param aSrcBitmap Source bitmap reference.
+        * @param aSrcRect Rectangle that is processed from source bitmap.
+        * @param aDstBitmap Destination bitmap reference.
+		*                   If destination bitmap has null handle,
+		*                   processor will create new bitmap using size of
+		*                   destination rectangle.
+        * @param aDstRect Rectangle that is filled in destination bitmap.
+		* @return Return system wide error codes:
+		*         KerrArgument - rectangles are outside of bitmap area.
+		*                      - source bitmap is empty (handle is null).
+		*                      - destination bitmap displaymode differs
+		*                        from source bitmap displaymode.
+		*         KErrBusy     - processor has request pending already.
+        */
+		virtual TInt Scale( TRequestStatus& aStatus,
+							const CFbsBitmap& aSrcBitmap,
+							const TRect& aSrcRect,
+							CFbsBitmap& aDstBitmap,
+							const TRect& aDstRect ) = 0;
+
+        /**
+        * Check if processor has request pending.
+        * @since 3.0
+		* @return ETrue if request is pending, EFalse if not.
+        */
+		virtual TBool IsBusy() const = 0;
+
+        /**
+        * Cancel pending request.
+		* If not active, method does nothing.
+        * @since 3.0
+        */
+		virtual void CancelProcess() = 0;
+
+        /**
+        * Set filter.
+		* For future use, not used currently!
+        * @since 3.0
+        */
+		virtual void SetFilter( MIHFilter* aFilter ) = 0;
+    };
+
+#endif // MIHLSCALER_H
+
+// End of File