--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/viewframework/layouts/inc/glxzoomlayoutbase.h	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,104 @@
+/*
+* 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:    Definition of TGlxZoomLayoutBase
+*
+*/
+
+
+
+
+#ifndef GLXZOOMLAYOUTBASE_H
+#define GLXZOOMLAYOUTBASE_H
+
+// INCLUDES
+
+#include <glxlayout.h>
+
+// FORWARD DECLARATIONS
+
+struct TAlfRealRect;
+
+// CLASS DECLARATION
+
+/**
+* Abtract base class for zooming layouts.  Sets layout values based on
+* coordinates provided by the derived class.
+*
+* @internal reviewed 06/06/2007 by Kimmo Hoikka
+*/
+class TGlxZoomLayoutBase : public TGlxLayout
+    {
+    public:  // Constructors and destructor
+
+        /**
+        * C++ default constructor.
+        */
+        IMPORT_C TGlxZoomLayoutBase();
+
+        /**
+        * Destructor.
+        */
+        IMPORT_C ~TGlxZoomLayoutBase();
+
+    public: // New functions
+
+        /**
+        * Set the image dimensions.
+        * @param aDimensions Dimensions of the image being zoomed (in pixels)
+        */
+        IMPORT_C void SetImageDimensions(const TSize& aDimensions);
+        /**
+        * Get the image dimensions.
+        * @return const TSize& Dimensions of the image being zoomed (in pixels)
+        */
+        IMPORT_C const TSize& ImageDimensions() const;
+
+        /**
+        * Get current zoom and pan values.  The returned rectangle is relative
+        * to the screen, ie. if the width is 2, the visual should be twice the
+        * width of the screen, and if the centre of the rectangle is (0, 0) the
+        * visual should be centred on the screen. If the rectangle is
+        * (-0.5, -0.5) - (0.5, 0.5) then the visual should exactly fill the
+        * screen.
+        * @param aRect Reference to rect in which to return coords.
+        */
+        virtual void GetCurrentCoords(TAlfRealRect& aRect) = 0;
+        /**
+        * Get "predicted" zoom and pan values.  These are the values that would
+        * eventually be reached if the user released all zoom/pan keys now.
+        * @param aRect Reference to rect in which to return coords.
+        */
+        virtual void GetPredictedCoords(TAlfRealRect& aRect) = 0;
+
+    protected:  // From TGlxLayout
+
+        /** See @ref TGlxLayout::DoSetLayoutValues */
+        IMPORT_C void DoSetLayoutValues(TGlxLayoutInfo& aInfo);
+        /** See @ref TGlxLayout::DoChanged */
+        IMPORT_C TBool DoChanged() const;
+        /** See @ref TGlxLayout::DoClearChanged */
+        IMPORT_C void DoClearChanged();
+
+    protected:  // Data
+        /** Dimensions of the image being zoomed (in pixels) */
+        TSize iImageDimensions;
+
+    private:    // Data
+        /** Whether the layout has changed since last refresh */
+        TBool iChanged;
+    };
+
+#endif  // GLXZOOMLAYOUTBASE_H
+
+// End of File