sl@0: // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // SCREEN_REDRAW.H
sl@0: // 
sl@0: //
sl@0: 
sl@0: #ifndef __SCREEN_REDRAW_H__
sl@0: #define __SCREEN_REDRAW_H__
sl@0: 
sl@0: #include <e32base.h>
sl@0: #include <e32std.h>
sl@0: #include <gdi.h>
sl@0: #include "wstypes.h"
sl@0: #include <Graphics/WSGRAPHICDRAWERINTERFACE.H>
sl@0: #include "Graphics/wsgraphicdrawerinternal.h"
sl@0: 
sl@0: class CScreen;
sl@0: class CWsRenderStage;
sl@0: class CWsWindow;
sl@0: 
sl@0: //#define USE_DEBUG_REGIONS
sl@0: 
sl@0: /**
sl@0: The CScreenRedraw maintains the areas of the screen which need to be updated, and handles some of the
sl@0: scheduling of draw code to do so.  It has a close relationship with the animation scheduler, which 
sl@0: by default will be the CDefaultAnimationScheduler in server.cpp
sl@0: */
sl@0: class CScreenRedraw : public CBase, public MWsScreenRedraw
sl@0: 	{
sl@0: public:
sl@0: 	static CScreenRedraw * NewL(CScreen& aScreen);
sl@0: 	virtual ~CScreenRedraw();
sl@0: 	const TTime& Now() const;
sl@0: 	void ScheduleRegionUpdate(const TRegion* aDefinitelyDirty);
sl@0: 	void RegionUpdate();
sl@0: 	void ScheduleRedraw();
sl@0: 	void ScheduleAnimation(const TRect& aRect,const TTimeIntervalMicroSeconds& aFromNow,const TTimeIntervalMicroSeconds& aFreq,const TTimeIntervalMicroSeconds& aStop);
sl@0: 	void OnAnimation();
sl@0: 	void AddRedrawRegion(const TRegion& aRegion, TBool aSchedule = ETrue, TRedrawDepth aDepth = ERedrawAll);
sl@0: 	void DoRedrawNow();
sl@0: 	void DiscardAllSchedules();
sl@0: 	void ScheduleRender(const TTimeIntervalMicroSeconds& aFromNow);
sl@0: 	void ScheduleWinFadeNoRedraw( CWsWindow* aWin );	
sl@0: 	void AcceptFadeRequest( CWsWindow* aWin, TBool	aIsFaded, TBool aIsBehind, TBool aIncludeChildren = EFalse );
sl@0: 	
sl@0: public: // Implementing MWsScreenRedraw
sl@0: 	void SetObserver(MWsScreenRedrawObserver* aObserver);	
sl@0: 	TBool IsUpdatePending();
sl@0: 	const TRegion * AnimationRegion() const;
sl@0: 	void UpdateDevice();
sl@0: 	
sl@0: public: // Implementing MWsObjectProvider
sl@0: 	TAny * ResolveObjectInterface(TUint aTypeId);
sl@0: 
sl@0: 	void BanThisRegionUpdate( TRegion& aForbiddenRegion );
sl@0: 	void LiftRegionUpdateBan( TRegion& aFormerForbiddenRegion  );
sl@0: 	
sl@0: private:
sl@0: 	CScreenRedraw(CScreen& aScreen);
sl@0: 	void ConstructL();
sl@0: #	ifdef USE_DEBUG_REGIONS
sl@0: 	void DebugRect(TRgb aColor, TRgb aFill, const TRect * aRect);
sl@0: 	void DebugRegion(TRgb aColor, TRgb aFill, const TRegion * aRegion);
sl@0: #	endif
sl@0: 
sl@0: private:
sl@0: 	struct TTimedRect
sl@0: 		{
sl@0: 		TTimedRect(const TRect& aRect, const TTime& aTime);
sl@0: 		TRect iRect;
sl@0: 		TTime iTime;
sl@0: 		static TInt Compare(const TTimedRect& aOne,const TTimedRect& aOther);
sl@0: 		};
sl@0: 
sl@0: private:
sl@0: 	CScreen& iScreen;
sl@0: 	mutable TTime iNow;
sl@0: 	mutable TTime iNext;
sl@0: 	TBool iScheduled;
sl@0: 	TBool iAnimating;
sl@0: 	TBool iRegionUpdateScheduled;
sl@0: 	TBool iRenderScheduled;
sl@0: 	RArray<TTimedRect> iTimedDrawRect;
sl@0: 	RRegionBuf<20> iInvalid;  // Region that needs to be redrawn (eg window contents changed).
sl@0: 	RRegionBuf<20> iTopLayer; // Region that we need to draw, but don't need to redraw (eg new window)
sl@0: 	const TRegion * iAnimationRegion; // Region being redrawn during animation
sl@0: 	MWsScreenRedrawObserver* iObserver;
sl@0: 	CWsRenderStage * iRenderStages;
sl@0: 	RRegion	iBannedRegion;
sl@0: 	};
sl@0: 
sl@0: #endif //__SCREEN_REDRAW_H__