--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/viewframework/uiutilities/inc/glxscrollbar.h	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,183 @@
+/*
+* 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:    Scrollbar
+*
+*/
+
+
+
+
+#ifndef C_GLXSCROLLBAR_H
+#define C_GLXSCROLLBAR_H
+
+#include <e32base.h>
+
+class MGlxScrollbarObserver;
+class CAlfControl;
+class CAlfLayout;
+class CAlfAnchorLayout;
+class CGlxTextureManager;
+
+/**
+ * CGlxScrollbar
+ *
+ * Class to handle controlling/drawing of scrollbar
+ *
+ * Example: Scrollbar required for list with 10 items, with 3 visible items
+ * The first visible row is at position 0.
+ * The position is always from 0 to (full length - 1).
+ *
+ * Client calls:
+ *
+ * SetFullLength(10)
+ * SetVisibleLength(3)
+ * SetPosition(0)
+ *
+ * @lib glxuiutilities.lib
+ *
+ * @author Michael Yip
+ */
+class CGlxScrollbar : public CBase
+    {
+public:
+    /**
+     * Two phase constructor
+     *
+     * @param aControl The Alf control
+     * @param aParentLayout The Alf layout that owns this scrollbar
+     */
+    IMPORT_C static CGlxScrollbar* NewL(CAlfControl& aControl, CAlfLayout& aParentLayout);
+
+    /**
+     * Two phase constructor
+     *
+     * @param aControl The Alf control
+     * @param aParentLayout The Alf layout that owns this scrollbar
+     */
+    IMPORT_C static CGlxScrollbar* NewLC(CAlfControl& aControl, CAlfLayout& aParentLayout);
+
+    /**
+     * Add an observer to observe scrollbar
+     * Observers are notified if the scrollbar is scrollable
+     *
+     * @param aObserver The observer
+     */
+    IMPORT_C void AddObserverL(MGlxScrollbarObserver* aObserver);
+
+    /**
+     * Remove an observer
+     *
+     * @param aObserver The observer
+     */
+    IMPORT_C void RemoveObserver(MGlxScrollbarObserver* aObserver);
+
+    /**
+     * Sets the visible length of the scrollbar
+     *
+     * @param aVisibleLength The visible length
+     */
+    IMPORT_C void SetVisibleLength(TUint aVisibleLength);
+
+    /**
+     * Sets the full length of the scrollbar
+     *
+     * @param aFullLength The full length
+     * @param aTransitionTime The transition time in milliseconds if any animation is required
+     */
+    IMPORT_C void SetFullLength(TUint aFullLength, TUint aTransitionTime = 0);
+
+    /**
+     * Sets the position of the first visible row in the full length
+     *
+     * @param aPosition The position
+     * @param aTransitionTime The transition time in milliseconds if any animation is required
+     */
+    IMPORT_C void SetPosition(TUint aPosition, TUint aTransitionTime = 0);
+
+    /**
+     * Destructor
+     */
+    ~CGlxScrollbar();
+
+private:
+    /**
+     * Constructor
+     */
+    CGlxScrollbar();
+
+    /**
+     * Two phase constructor
+     *
+     * @param aControl The Alf control
+     * @param aParentLayout The Alf layout that owns this scrollbar
+     */
+    void ConstructL(CAlfControl& aControl, CAlfLayout& aParentLayout);
+
+    /**
+     * Set the textures for the visuals
+     */
+    void SetTexturesL();
+
+    /**
+     * Set the textures for the visuals in the background layout
+     *
+     * @param aTextureManager The texture manager for creating textures
+     */
+    void SetBackgroundTexturesL(CGlxTextureManager& aTextureManager);
+
+    /**
+     * Set the textures for the visuals in the thumb layout
+     *
+     * @param aTextureManager The texture manager for creating textures
+     */
+    void SetThumbTexturesL(CGlxTextureManager& aTextureManager);
+
+    /**
+     * Set the background or thumb layout anchors
+     *
+     * @param aLayout The anchor layout to set the anchors for
+     */
+    void SetAnchors(CAlfAnchorLayout& aLayout);
+
+    /**
+     * Update the scrollbar
+     *
+     * @param aTransitionTime The transition time in milliseconds if any animation is required
+     */
+    void Update(TUint aTransitionTime = 0);
+
+    /**
+     * Notify observers if the scrollbar is scrollable
+     */
+    void NotifyObservers();
+
+private:
+    /// The Alf layout for the scrollbar
+    /// Ownership passed to parent layout
+    CAlfLayout* iLayout;
+
+    /// The visible length of the scrollbar
+    TUint iVisibleLength;
+
+    /// The full length of the scrollbar
+    TUint iFullLength;
+
+    /// The position of the first visible row in the full length
+    TUint iPosition;
+
+    /// Observers of the scrollbar
+    RPointerArray<MGlxScrollbarObserver> iObservers;
+    };
+
+#endif // C_GLXSCROLLBAR_H