--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmplugins/mmfwplugins/src/Plugin/subtitle/subtitlegraphicdrawer/mmfsubtitlegraphicdrawer.h	Thu Oct 07 22:34:12 2010 +0100
@@ -0,0 +1,148 @@
+// 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:
+//
+
+/**
+ @file
+ @internalComponent
+*/
+
+#ifndef MMFSUBTITLEGRAPHICDRAWER_H
+#define MMFSUBTITLEGRAPHICDRAWER_H
+  
+#include <bitstd.h>
+#include <graphics/wsgraphicdrawer.h>
+#include <graphics/wsgraphicdrawerinterface.h>
+
+#include "mmfsubtitlegraphicmessage.h"
+
+/**
+ * Forward declarations
+ */
+class TSubtitleGraphicState;
+
+/** 
+Defines the MMF subtitle graphic drawer CRP component.  Used to display subtitles 
+over video content.  
+*/
+NONSHARABLE_CLASS(CMMFSubtitleGraphicDrawer): public CWsGraphicDrawer
+    {  
+public:
+    enum {EImplUid = 0x10285C9C};
+                
+public:
+	virtual ~CMMFSubtitleGraphicDrawer();
+    static CMMFSubtitleGraphicDrawer* NewL();
+   
+	// From CwsGraphicDrawer
+    void ConstructL(MWsGraphicDrawerEnvironment& aEnv,const TGraphicDrawerId& aId, MWsClient& aOwner, const TDesC8& aData);
+    virtual void HandleMessage(const TDesC8& aData);
+    virtual void DoDraw(MWsGc& aGc, const TRect& aRect, const TDesC8& aData) const;
+
+private:
+	// Message handling..
+	void ProcessMessageInit(TSubtitleCrpMsgInit& aMessage);
+	void ProcessMessageDrawFrame(TSubtitleCrpMsgDrawFrame& aMessage);
+	void ProcessMessageSwapFrame(TSubtitleCrpMsgRenderSwapFrame& aMessage);
+	void DoBitBlt(MWsGc& aGc, const TRect& aRect) const;
+	
+private:
+    enum TSubtitleGraphicState
+		{
+		ESubtitleGraphicStateWaiting    			= 0,
+		ESubtitleGraphicStateInit 					= 10,
+		ESubtitleGraphicStateInitSimple 			= 20,
+		ESubtitleGraphicStateDrawFrame 				= 30,
+		ESubtitleGraphicStateRefreshContent			= 40,
+		ESubtitleGraphicStateSwapFrame 				= 50,
+		ESubtitleGraphicStateClear					= 60
+		};
+		
+	enum TSubtitleGraphicFrame
+		{
+		ESubtitleGraphicFrame1 = 1,
+		ESubtitleGraphicFrame2 = 2,
+		ESubtitleGraphicFrame3 = 3
+		};
+      
+private:
+	/**
+	Handles to subtitle frames.
+	Used for double-buffered rendering approach 
+	@see CWsInterleaveGraphicDrawer::ProcessMessageInit()
+	*/
+    CFbsBitmap* iBitmap1;
+    CFbsBitmap* iBitmap2; 
+    
+    /**
+    Used to store one-off subtitle rendering requests
+    @see CWsInterleaveGraphicDrawer::ProcessMessageDrawFrame()
+    */
+    CFbsBitmap* iTempBitmap;
+    
+    /**
+    Status of current bitmap handles.  Stored here for effeciency as they are 
+    checked every DoDraw() call.
+    */
+    TBool iBitmap1Valid;
+    TBool iBitmap2Valid;
+    TBool iTempBitmapValid;
+    
+   
+    /**
+    Indicates the current frame.  This is the buffer that will be drawn
+    on the next call to @see SwapFrame() or when WServ invalidates a sub-portion
+    of the screen
+    ESubtitleGraphicFrame1: @see iBitmapHandle1
+    ESubtitleGraphicFrame2: @see iBitmapHandle2
+    ESubtitleGraphicFrame3: @see iTempBitmapHandle
+    */
+    TSubtitleGraphicFrame iCurrentFrame;
+    	
+	/**
+	Indicates the region of the current bitmap that contains new image data
+	*/
+	TRect iDirtyRegion;
+	
+	/**
+	Stores the previous frames dirty region. 
+	*/
+	TRect iOldDirtyRegion;
+	
+	/**
+	The current CRP region stored on the first call to DoDraw()
+	*/
+	mutable TRect iSubtitleRegion;
+	
+	/**
+	Indicates how long the current frame should be displayed for
+	*/
+	TTimeIntervalMicroSeconds iDisplayDuration;
+	
+	/**
+	Indicates the system time that the current frame expires.   Calculated
+	from the current system time and the display duration given on a 
+	ESubtitleGraphicStateDrawFrame/ESubtitleGraphicStateSwapFrame frame message.
+	*/
+	mutable TTime iDisplayClearDue;
+	
+	/**
+	The current CRP state
+	*/
+	mutable TSubtitleGraphicState iState;
+	
+	mutable TBool iCaptureRegion;
+};
+
+#endif