/*

* Copyright (c) 1997-2009 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: 

*

*/

#ifndef __T_RTPAR_H__

#define	__T_RTPAR_H__

#include <E32TWIN.H>

#include <TXTRICH.H>

// classes defined in this header

class CRichTextReader;

class CPMLWriter;

//

enum TTagType {		   // Possible types of tag

	EGlobal, 

	EParagraph, 

	ECharacter , 

	EControl

	}; 

enum TTagStatus {	 

	ETagStart,		  // "<"

	ETagEnd			  // ">"

	};

class CRichTextReader : public CBase

	{

public:

	static CRichTextReader* NewL();

	void Destruct();

	// these functions convert a supplied RichText doc into PML 

	// which is contained in the returned buffer.

	CBufSeg* ConvertRichText(CRichText* aRichTextDoc, RConsole aConsole);

	CBufSeg* ConvertRichText(CRichText* aRichTextDoc);

protected:

	CRichTextReader();

	void ConstructL();

private:

	void SenseGlobalFormat();

	TInt TranslatePhrase(TInt aPos);	

	void CompareParaFormats();

	void CompareCharFormats();

	void CompareParaToFactory(CParaFormat* aSensed);  

	void CompareCharToFactory(TCharFormat aSensed);

	void CheckTabList(CParaFormat* aFormatOne, CParaFormat* aFormatTwo);

	TParaBorder* CopyBorderL(const TParaBorder* aFrom,TParaBorder* aTo);

	TBullet* CopyBulletL(const TBullet* aFrom,TBullet* aTo);

private:

	CRichText* iRichTextDoc;

	CParaFormat* iThisParaFormat;

	CParaFormat* iPrevParaFormat;

	TCharFormat iThisCharFormat;

	TCharFormat iPrevCharFormat;

	TParaBorder* iBorder;

	RConsole iConsole;

	TBool iConsoleExists;				

	CPMLWriter* iPMLWriter;

	TInt iParaStart;				// Start pos of current paragraph

	TInt iDocLength;				// length in chars of rich text doc

	};

class CPMLWriter : public CBase

	{

public:

	static CPMLWriter* NewL();

	void Destruct();

	void Insert(const TDesC& aBuf);	// inserts a string into PML doc

	void Delete(TUint aNumberOfCharsToDelete);	// deletes chars prior to current insert pos

	void Output(RConsole aConsole); // output PML doc to screen

	inline CBufSeg* ReturnPmlDoc() {return iTextBuf;}

	inline TUint WritePos() {return iInsertPos;}

	void SetTag(TTagType, TTagStatus);	// Prints tag delimiters & tag type

	void SetTab(TTabStop aTabStop);

	void SetFormat(TTextFormatAttribute aAttribute, TInt aValue);

	void SetFormat(TTextFormatAttribute aAttribute, TParaBorder* aParaBorder);

	void SetFormat(TTextFormatAttribute aAttribute, const TTypeface &aTypeface);

	void SetFormat(TTextFormatAttribute aAttribute, TBullet* aBullet);

	void SetFormat(TTextFormatAttribute aAttribute, TTabStop aTabStop);

protected:

	CPMLWriter();

	void ConstructL();

private:

	void ProcessAlignment(TInt aValue);

	void ProcessLineSpacingControl(TInt aValue);

	void ProcessFontPrintPos(TInt aValue);

	void ProcessBooleanAtt(TTextFormatAttribute aAttribute, TInt aValue);

	void ProcessBorder(TTextFormatAttribute aAttribute, TInt aValue);

	void SquashBuf(const TDesC& aBuffer, TDes8& aTarget); // squashes 16 bit buffers to 8 bit (for unicode)

	void ExpandBuf(const TDes8& aBuffer, TDes& aTarget);

private:

	CBufSeg* iTextBuf;					// Buffer for text file to be read into

	TUint iInsertPos;

	};

#endif