camerauis/cameraapp/generic/inc/camstartuplogocontroller.h
branchRCL_3
changeset 16 d486e5e3cc9a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/camerauis/cameraapp/generic/inc/camstartuplogocontroller.h	Wed Mar 31 21:06:44 2010 +0300
@@ -0,0 +1,124 @@
+/*
+* Copyright (c) 2010 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:  Controller for managing the camera startup logo state
+*
+*/
+
+#ifndef CAMSTARTUPLOGOCONTROLLER_H
+#define CAMSTARTUPLOGOCONTROLLER_H
+
+// INCLUDES
+#include <e32std.h>
+#include <e32base.h>
+
+enum TStartupLogoState
+    {
+    EStartupLogoNotVisible,
+    EStartupLogoVisible
+    };
+
+// CLASS DECLARATION
+
+/**
+ *  Observer interface for listening to controller state change events
+ * 
+ */
+class MCamStartupLogoControllerObserver
+    {
+public:
+    virtual ~MCamStartupLogoControllerObserver() {}
+
+    /**
+     * Startup logo controller state changed.
+     */
+    virtual void StartupLogoControllerStateChanged(TStartupLogoState aNewState) = 0;
+    };
+
+
+
+/**
+ *  Controller for managing the camera startup logo state
+ * 
+ */
+class CCamStartupLogoController : public CBase
+    {
+
+public:
+    // Constructors and destructor
+
+    /**
+     * Destructor.
+     */
+    virtual ~CCamStartupLogoController();
+
+    /**
+     * Two-phased constructor.
+     */
+    static CCamStartupLogoController* NewL(TStartupLogoState aInitialState);
+
+    /**
+     * Two-phased constructor.
+     */
+    static CCamStartupLogoController* NewLC(TStartupLogoState aInitialState);
+
+public:
+    /**
+     * Add an observer. Returns an error code.
+     */
+    TInt AddObserver(MCamStartupLogoControllerObserver* aObserver);
+
+    /**
+     * Removes an observer.
+     */
+    void RemoveObserver(MCamStartupLogoControllerObserver* aObserver);
+
+    /**
+     * Get current state.
+     */
+    TStartupLogoState State() const;
+
+    /**
+     * Show startup logo.
+     */
+    void ShowLogo();
+
+    /**
+     * Hide startup logo.
+     */
+    void HideLogo();
+
+private:
+
+    /**
+     * Constructor for performing 1st stage construction
+     */
+    CCamStartupLogoController(TStartupLogoState aInitialState);
+
+    /**
+     * Symbian default constructor for performing 2nd stage construction
+     */
+    void ConstructL();
+
+    static TInt FailSafeCallback(TAny* ptr);
+
+private:
+    void SetState(TStartupLogoState aNewState);
+
+private: // data
+    TStartupLogoState iState;
+    RPointerArray<MCamStartupLogoControllerObserver> iObservers;
+    CPeriodic* iFailSafeTimer; // own
+    };
+
+#endif // CAMSTARTUPLOGOCONTROLLER_H