/*

* Copyright (c) 2006 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:  Base class for video control.

*

*/

#ifndef C_VTUIVIDEOCONTROLBASE_H

#define C_VTUIVIDEOCONTROLBASE_H

#include    <coecntrl.h>

#include    <AknUtils.h>

#include    <babitflags.h>

#include    "MVtUiVideoWindow.h"

#include    "CVtUiBitmapManager.h"

// FORWARD DECLARATIONS

class CVtUiBitmapManager;

class TAknTextLineLayout;

class CAknsBasicBackgroundControlContext;

/**

 *  CVtUiVideoControlBase

 *

 *  Video control base class.

 *

 *  @since S60 v5.0

 */

class CVtUiVideoControlBase : public CCoeControl, public MVtUiVideoWindow

    {

protected: // enumerations

    // Rendering hints

    enum TRenderingHint

        {

        // If this hint is set, then control's background is filled with color

        // at index 0. This hint is mutually exclusive with ESkinnedBackground.

        // If neither EColoredBackground nor ESkinnedBackground is set, then

        // no background drawing is done.

        EColoredBackground,

        // If this is set, then control's background is skinned. This hint is

        // mutually exclusive with EColoredBackground. If neither

        // EColoredBackground nor ESkinnedBackground is set, then no background

        // drawing is done.

        ESkinnedBackground,

        // If this hint is set, then no blind icon is drawn.

        ENoBlindIcon,

        // If this hint is set, then no waiting text is shown.

        ENoWaitingText

        };

public:

    /**

     * Destructor

     */

    ~CVtUiVideoControlBase();

protected:

    /**

     * Constructor

     */

    CVtUiVideoControlBase( CVtUiBitmapManager& aBitmapManager );

    /**

     * 2nd constructor

     */

    void BaseConstructL();

    /**

    * Sets (enables) rendering hints

    */

    void SetRenderingHint( TRenderingHint aHint );

    /**

    * Clears (disables) rendering hints

    */

    void ClearRenderingHint( TRenderingHint aHint );

    /**

    * Returns reference to bitmap manager.

    */

    CVtUiBitmapManager& BitmapManager() const;

    /**

    * Returns pointer to bitmap with given ID.

    */

    CFbsBitmap* Bitmap( TVtUiBitmapPoolId aId ) const;

    /**

    * Fixes given point suitable for DP (e.g. x coordinates of the point is

    * even).

    */

    TPoint AdjustPointForDP( const TPoint aPoint ) const;

    /**

    * Fixes given rect suitable for DP (e.g. x coordinates and width of the

    * rectangle are even).

    */

    TRect AdjustRectForDP( const TRect aRect ) const;

protected: // virtual methods

    /**

    * Gets waiting text layout.

    */

    virtual TAknTextLineLayout WaitingTextLayout( TInt aLine );

    /**

    * The size changed method. If you need to do special handling after the

    * control's size has changed, overwrite this method.

    */

    virtual void HandleSizeChanged();

    /**

    * Draws control background using current skin. If you need special

    * background rendering in inherited control, override this method.

    * There is no need to check ESkinnedBackground hint again in this method

    * because it has been checked prior to calling.

    */

    virtual void DrawSkinnedBackground( CWindowGc& aGc ) const;

    /**

    * Draws control background using color. If you need special

    * background rendering in inherited control, override this method.

    * There is no need to check EColoredBackground hint again in this method

    * because it has been checked prior to calling.

    */

    virtual void DrawColoredBackground( CWindowGc& aGc ) const;

    /**

    * Draws waiting text. If you need special waiting text rendering in

    * inherited control, override this method.

    * There is no need to check ENoWaitingText hint again in this method

    * because it has been checked prior to calling.

    */

    virtual TBool DrawWaitingText( CWindowGc& aGc ) const;

    /**

    * Draws blind icon. If you need special blind icon rendering in inherited

    * control, override this method.

    * There is no need to check ENoBlindIcon hint again in this method

    * because it has been checked prior to calling.

    */

    virtual void DrawBlind( CWindowGc& aGc ) const;

    /**

    * Draws stream. If you need special stream rendering in inherited control,

    * override this method. iStreamBitmap cannot be NULL if this method is

    * called.

    */

    virtual void DrawStream( CWindowGc& aGc ) const;

    /**

    * Returns blitting position (top-left corner) coordinates for the stream.

    */

    virtual TPoint StreamBlitPosition() const;

    /**

    * Returns clipping rectangle for the stream.

    */

    virtual TRect StreamClippingRect() const;

    /**

    * Returns pointer to blind bitmap or NULL if no bitmap is present.

    */

    virtual CFbsBitmap* BlindImage() const;

    /**

    * Returns pointer to blind mask or NULL if no mask is present.

    */

    virtual CFbsBitmap* BlindMask() const;

    /**

    * Returns blit position for blind icon.

    */

    virtual TPoint BlindBlitPosition() const;

public: // from MVtUiVideoWindow

    /**

    * @see MVtUiVideoWindow::Reset

    */

    void Reset();

    /**

    * @see MVtUiVideoWindow::SetBlind

    */

    void SetBlind( TBool aStatus );

    /**

    * @see MVtUiVideoWindow::SetStreamBitmap

    */

    void SetStreamBitmap( CFbsBitmap* aStreamBitmap );

    /**

    * @see MVtUiVideoWindow::SetStreamBitmapReserve

    */

    void SetStreamBitmapReserve( CFbsBitmap* aStreamBitmap );

    /**

    * @see MVtUiVideoWindow::SetWaiting

    */

    void SetWaiting( TBool aShowWaitingText );

    /**

    * @see MVtUiVideoWindow::Redraw

    */

    void Redraw();

    /**

    * @see CCoeControl::MopSupplyObject

    */

    TTypeUid::Ptr MopSupplyObject( TTypeUid aId );

    /**

     * Set remote video control 

     */

    virtual void SetRemoteVideoControl( CCoeControl* aRemoteControl );

    /**

     * Layout the postion and the size of the remote video control

      */

    virtual void LayoutRemoteVideo();    

    /**

     * Returns pointer to remote video control  or NULL if no remote video control  is present.

     */

    CCoeControl * RemoteVideoControl();

private: // from CCoeControl

    /**

    * @see CCoeControl::Draw

    */

    void Draw( const TRect& aRect ) const;

    /**

    * @see CCoeControl::SizeChanged

    */

    void SizeChanged();

    /**

    * @see CCoeControl::PositionChanged

    */

    void PositionChanged();

private:

    /**

    * Redraws stream bitmap.

    */

    void RedrawStream();

    /**

    * Wraps waiting text if needed.

    */

    void WrapOnDemand();

    /**

    * Wraps waiting text.

    */

    void WrapWaitingTextL();

    /**

    * The draw method.

    */

    void DoDraw( CWindowGc& aGc ) const;

    /**

    * Draws control background.

    */

    void DoDrawBackground( CWindowGc& aGc ) const;

    /**

    * Draws waiting text.

    */

    TBool DoDrawWaitingText( CWindowGc& aGc ) const;

    /**

    * Draws blind icon.

    */

    void DoDrawBlind( CWindowGc& aGc ) const;

    /**

    * Draws stream.

    */

    void DoDrawStream( CWindowGc& aGc ) const;

    TBool IsAlphaZero() const;

    void SetAlpha( CWindowGc& aGc ) const;

protected:

    // ETrue if blind icon is shown.

    TBool iBlindStatus;

    // Reference to stream bitmap.

    CFbsBitmap* iStreamBitmap;

    // ETrue if waiting text should be shown.

    TBool iWaitingTextShow;

    // Owned wrapped waiting text.

    HBufC* iWaitingTextWrapped;

    // Owned wrapped waiting text.

    CArrayFix< TPtrC >* iWaitingTextWrappedArray;

    // First line layout of waiting text.

    TAknLayoutText iWaitingTextLine1Layout;

    // Second line layout of waiting text.

    TAknLayoutText iWaitingTextLine2Layout;

    // Owned: background context.

    CAknsBasicBackgroundControlContext* iBgContext;

    // Reference to remote video control.

    CCoeControl* iRemoteVideoControl;    

private:

    // Pointer to bitmap manager.

    CVtUiBitmapManager* iBitmapManager;

    // Rendering hints

    TBitFlags32 iHints;

    // FrameUpdate() is called from AO.

    CAsyncCallBack* iAsyncFrameUpdated;

    mutable TBool iSetAlpha;

    };

#endif // C_VTUIVIDEOCONTROLBASE_H