/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* which accompanies this distribution, and is available

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Interface to product screen mode data.

*

*

*/

#ifndef AKNSCREENMODE_H

#define AKNSCREENMODE_H

#include <w32std.h>

class CAknAppUiBase;

class SAknLayoutConfig;

class SAknScreenModeInfo;

/**

*  Information about a screen mode

*

*  @since 3.1

*/

class TAknScreenMode

    {

public:

    /**

    * Gets the size of the screen for this screen mode in pixels..

    * @return The screen size.

    */

    IMPORT_C TSize SizeInPixels() const;

    /**

    * Gets the display mode (color depth) for this screen mode.

    * @return The display mode.

    */

    IMPORT_C TDisplayMode DisplayMode() const;

	/**

	* Gets the screen mode number. This is the screen mode number

	* as used by @c CWsScreenDevice APIs, which start from zero.

	* It is one less than the number of the coresponding entry 

	* in wsini.ini, which start from one.

	* @return The screen mode number.

	*/

	IMPORT_C TInt ModeNumber() const;

public:

    TAknScreenMode(const SAknScreenModeInfo& aInfo);

protected:

    const SAknScreenModeInfo& iInfo;

    };

/**

*  TAknScreenModes is a collection of available screen 

*  modes on this device, with API for setting an application's

*  screen mode.

*

*  @since 3.1

*/

class TAknScreenModes

    {

public:

    /**

    * Factory function.

    * @return A constructed TAknScreenModes object.

    */

    IMPORT_C static TAknScreenModes GetModes();

    /**

    * Get the number of screen modes.

    * @return The number of screen modes.

    */

    IMPORT_C TInt Count() const;

    /**

    * Get screen mode information by index.

    * @param aIndex, the screen mode index, must be in the

    * range [0, Count()).

    * @return Information about a screen mode.

    */

    IMPORT_C TAknScreenMode operator[](TInt aIndex) const;

    /**

    * Set the screen mode for an application UI.

    * The application will be displayed in the selected

    * screen mode. The application will no longer respond to

    * hardware or software events which would normally affect

    * screen mode. It will be permanently fixed to the selected

    * screen mode.

    * By using this API, the application effectively declares

    * itself to be non-scalable.

    * Notifier dialogs and other non-full-screen UI will appear

    * in the selected screen mode when displayed over this app.

    * Other full-screen applications will not be affected by

    * this call, except in that switching between this app and

    * other apps using different screen modes will be slow.

    * The screen mode selected must be one returned through

    * the API of this class. There are no fixed screen modes

    * which will appear on every device. The emulator may

    * support many screen modes, but any particular device

    * will probably only support one or two modes.

    * Setting a screen mode may result in the application looking

    * low resolution, badly positioned, the wrong shape,

    * incorrect for certain hardware configurations (eg softkeys

    * in the wrong place), only taking up part of the screen,

    * other applications being visible behind it and generally

    * bad in many other ways.

    * It is strongly recommended that application authors write

    * their applications to be scalable, rather than use this API.

    * If an application wants a fixed orientation, it should use

    * @c CAknAppUiBase::SetOrientationL().

    * Note: this API has no effect on non-full-screen app UIs.

    * @param aAppUi The app UI.

    * @param aMode A screen mode accessed through this API.

    */

    IMPORT_C static void SetAppUiScreenModeL(CAknAppUiBase* aAppUi, const TAknScreenMode& aMode);

public:

    TAknScreenModes(const SAknLayoutConfig& aInfo);

protected:

    const SAknLayoutConfig& iInfo;

    };

#endif